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2. Sirt3 protects dopaminergic neurons from mitochondrial oxidative stress

Author

Han Shi, Yong Chao Ma, Han Xiang Deng, David Gius, D. James Surmeier, and Paul T. Schumacker

Subjects
0301 basic medicine, Arginine, SIRT3, Substantia nigra, Mitochondrion, Biology, medicine.disease_cause, 03 medical and health sciences, Mice, 0302 clinical medicine, Sirtuin 3, Genetics, medicine, Animals, Molecular Biology, Genetics (clinical), Membrane potential, Mice, Knockout, Pars compacta, Superoxide Dismutase, Dopaminergic Neurons, Dopaminergic, Age Factors, Acetylation, Parkinson Disease, General Medicine, Articles, Oxidants, Cell biology, Mitochondria, Substantia Nigra, Oxidative Stress, 030104 developmental biology, Mutagenesis, Site-Directed, Oxidation-Reduction, 030217 neurology & neurosurgery, Oxidative stress
Abstract

Age-dependent elevation in mitochondrial oxidative stress is widely posited to be a major factor underlying the loss of substantia nigra pars compacta (SNc) dopaminergic neurons in Parkinson’s disease (PD). However, mechanistic links between aging and oxidative stress are not well understood. Sirtuin-3 (Sirt3) is a mitochondrial deacetylase that could mediate this connection. Indeed, genetic deletion of Sirt3 increased oxidative stress and decreased the membrane potential of mitochondria in SNc dopaminergic neurons. This change was attributable to increased acetylation and decreased activity of manganese superoxide dismutase (MnSOD). Site directed mutagenesis of lysine 68 to glutamine (K68Q), mimicking acetylation, decreased MnSOD activity in SNc dopaminergic neurons, whereas mutagenesis of lysine 68 to arginine (K68R), mimicking deacetylation, increased activity. Introduction of K68R MnSOD rescued mitochondrial redox status and membrane potential of SNc dopaminergic neurons from Sirt3 knockouts. Moreover, deletion of DJ-1, which helps orchestrate nuclear oxidant defenses and Sirt3 in mice led to a clear age-related loss of SNc dopaminergic neurons. Lastly, K68 acetylation of MnSOD was significantly increased in the SNc of PD patients. Taken together, our studies suggest that an age-related decline in Sirt3 protective function is a major factor underlying increasing mitochondrial oxidative stress and loss of SNc dopaminergic neurons in PD.

Published
2017

3. Imputation and subset-based association analysis across different cancer types identifies multiple independent risk loci in the TERT-CLPTM1L region on chromosome 5p15.33

Author

Hidemi Ito, Stephen K. Van Den Eeden, Abdisamad M. Ibrahim, Ching C. Lau, Preetha Rajaraman, Gloria M. Petersen, Judith Hoffman-Bolton, Colin P.N. Dinney, Chang Hyun Kang, Melinda C. Aldrich, Mark P. Purdue, Xiao-Ou Shu, William J. Blot, Sanjay Shete, Alpa V. Patel, Charles Kooperberg, Paolo Vineis, David Van Den Berg, Chao A. Hsiung, Anthony J. Swerdlow, Qing Lan, Wu Chou Su, Afshan Siddiq, Ulrike Peters, Katia Scotlandi, Sara H. Olson, Kendra Schwartz, Kelly L. Bolton, Chancellor Hohensee, Josep Lloreta, Kevin B. Jacobs, Debra T. Silverman, Rudolf Kaaks, Wei Zheng, Steven Gallinger, Junwen Wang, Angela Carta, Massimo Serra, Petra H.M. Peeters, Victoria L. Stevens, Yasushi Yatabe, Geraldine Cancel-Tassin, Joshua N. Sampson, Young Tae Kim, Graham A. Colditz, Pan-Chyr Yang, Baosen Zhou, Fredrick R. Schumacher, Nicolas Wentzensen, Evelyn Tay, Claudia Maria Hattinger, Chen Wu, Pilar Amiano, Mattias Johansson, Maxwell P. Lee, Christian P. Kratz, Michael B. Cook, Mingfeng Zhang, Kay-Tee Khaw, Jian-Min Yuan, Anne Zeleniuch-Jacquotte, Jinping Jia, Roberto Tirabosco, Jing Ma, Neil E. Caporaso, Christopher A. Haiman, Bu Tian Ji, Adrienne M. Flanagan, Neyssa Marina, Eric J. Jacobs, Sophia S. Wang, Chong-Jen Yu, Edward Giovannucci, Margaret Wrensch, Robert L. Grubb, Bin Zhu, Daniel O. Stram, Manolis Kogevinas, Margaret R. Karagas, Mazda Jenab, Alison M. Mondul, Jun Xu, Preethi S. Raj, Anders Ahlbom, Christine D. Berg, Shelley Niwa, Kala Visvanathan, Loic Le Marchand, Jorge R. Toro, Robert N. Hoover, Heather Spencer Feigelson, Michelle Brotzman, Laurence N. Kolonel, Krista A. Zanetti, Chengfeng Wang, Mary Ann Butler, Ann Truelove, Irene L. Andrulis, Hongbing Shen, H. Dean Hosgood, Ming Shyan Huang, Gee-Chen Chang, Jianjun Liu, John K. Wiencke, Stephanie J. Weinstein, Beatrice Melin, Kouya Shiraishi, Zhihua Yin, Lee E. Moore, Börje Ljungberg, Jolanta Lissowska, Elizabeth M. Gillanders, M. T. Landi, Cari M. Kitahara, Maria Feychting, Kuan-Yu Chen, Matthias Simon, Brian M. Wolpin, Hemang Parikh, Hannah P. Yang, Graham G. Giles, Alison Johnson, Demetrius Albanes, Carlos González, Brian E. Henderson, Xifeng Wu, Harvey A. Risch, Amy Hutchinson, Christopher Hautman, Constance Chen, Zhibin Hu, Donghui Li, Elio Riboli, Julie E. Buring, Curtis C. Harris, Xu Che, Núria Malats, Roger Henriksson, Rosario Tumino, Joanne S. Colt, Alfredo Carrato, Paolo Boffetta, Maria Pik Wong, Hideo Tanaka, Federico Canzian, Alan D. L. Sihoe, Chien-Jen Chen, Kenneth Muir, Chen Ying, Qincheng He, Melissa C. Southey, Marc Sanson, Victoria K. Cortessis, Sharon A. Savage, Wei Hu, Yao Tettey, Daniela S. Gerhard, Sofia Pavanello, Guangwen Cao, H. Barton Grossman, Michael Goggins, Hideo Kunitoh, Peter D. Inskip, Seth P. Lerner, Peter Kraft, David Thomas, Peng Guan, Chung Hsing Chen, I. Shou Chang, Christoffer Johansen, Roberta McKean-Cowdin, Lee J. Helman, Yuh Min Chen, Ana Patiño-García, Pär Stattin, Xiaoping Miao, Tangchun Wu, Jay S. Wunder, Ann W. Hsing, Yu-Tang Gao, Brooke L. Fridley, Tania Carreón, Charles C. Chung, Nan Hu, Yoo Jin Jung, Richard B. Biritwum, Eric J. Duell, Philip R. Taylor, Satu Männistö, Kai Yu, Meredith Yeager, Xia Pu, Vittorio Krogh, Anand P. Chokkalingam, Susan M. Gapstur, W. Ryan Diver, Yuanqing Ye, Keitaro Matsuo, Cecilia Arici, You-Lin Qiao, Alan R. Schned, Dominique S. Michaud, Joanne W. Elena, Christopher Kim, Dongxin Lin, Yun-Chul Hong, Daru Lu, Reina García-Closas, Jonine D. Figueroa, Linda M. Liao, Yi-Long Wu, Heiner Boeing, Mark Lathrop, Göran Hallmans, Elizabeth A. Holly, Carol Giffen, Andrew A. Adjei, Consol Serra, Anne Tjønneland, Joseph F. Fraumeni, Alisa M. Goldstein, Ruth C. Travis, Rebecca Troisi, Dalsu Baris, Nalan Gokgoz, Olivier Cussenot, Xiang Deng, Yeul Hong Kim, Malin Sund, Sonja I. Berndt, E. David Crawford, Edward D. Yeboah, Sook Whan Sung, Françoise Clavel-Chapelon, Woon-Puay Koh, Nilgun Kurucu, Richard B. Hayes, Ashish M. Kamat, Beata Peplonska, Laurie Burdette, Ze Zhang Tang, Alan A. Arslan, Malcolm C. Pike, Sabina Sierri, J. Michael Gaziano, Lorna H. McNeil, Katherine A. McGlynn, Ulla Vogel, Logan G. Spector, H. Bas Bueno-de-Mesquita, Stephen J. Chanock, Jae Yong Park, Jennifer Prescott, Fernando Lecanda, Margaret A. Tucker, Ti Ding, Christian C. Abnet, Jenny Chang-Claude, Dimitrios Trichopoulos, Wei-Yen Lim, Wen Tan, Nick Orr, Jin Hee Kim, Stefano Porru, Chand Khanna, Robert R. McWilliams, Zhaoming Wang, Jeong Seon Ryu, David V. Conti, Alison P. Klein, Adonina Tardón, Robert J. Klein, Rebecca J. Rodabough, Mark H. Greene, Aruna Kamineni, Jie Lin, Rachael Z. Stolzenberg-Solomon, Patricia Hartge, Susan E. Hankinson, Young-Chul Kim, In Sam Kim, Luis Sierrasesúmaga, Roel Vermeulen, Paige M. Bracci, Mariana C. Stern, Louise A. Brinton, Myron D. Gross, Yong-Bing Xiang, Chih Yi Chen, G. A. Gerald Andriole, Paul S. Meltzer, Ying-Huang Tsai, Faith G. Davis, Ulrika Andersson, Paul Brennan, Sara Lindström, Chaoyu Wang, Giuseppe Mastrangelo, Laufey T. Amundadottir, Immaculata De Vivo, Bryan A. Bassig, Elisabete Weiderpass, Takashi Kohno, Nilanjan Chatterjee, Margaret R. Spitz, Pier Alberto Bertazzi, William Wheeler, David J. Hunter, Wei Tang, Qiuyin Cai, Naomi E. Allen, Molly Schwenn, Emily White, Min Shen, Adeline Seow, Laura E. Beane Freeman, James E. Mensah, Howard D. Sesso, Anna Luisa Di Stefano, Amanda Black, Manuela Gago-Dominguez, Christine B. Ambrosone, Avima M. Ruder, Martha S. Linet, Meir J. Stampfer, Robert C. Kurtz, Donald A. Barkauskas, Lisa W. Chu, Montserrat Garcia-Closas, Jason W. Hoskins, Melissa A. Austin, Kyoung Mu Lee, Jianxin Shi, Charles S. Fuchs, Nathaniel Rothman, Richard Gorlick, Piero Picci, Gianluca Severi, Ann G. Schwartz, Jian Gu, Christopher I. Amos, Marie-Christine Boutron-Ruault, Salvatore Panico, Alicja Wolk, Sara S. Strom, Lisa Mirabello, Jin-Hu Fan, Chin-Fu Hsiao, Neal D. Freedman, Geoffrey S. Tobias, Julie M. Gastier-Foster, Wang, Z, Zhu, B, Zhang, M, Parikh, H, Jia, J, Chung, Cc, Sampson, Jn, Hoskins, Jw, Hutchinson, A, Burdette, L, Ibrahim, A, Hautman, C, Raj, P, Abnet, Cc, Adjei, Aa, Ahlbom, A, Albanes, D, Allen, Ne, Ambrosone, Cb, Aldrich, M, Amiano, P, Amos, C, Andersson, U, Andriole G., Jr, Andrulis, Il, Arici, C, Arslan, Aa, Austin, Ma, Baris, D, Barkauskas, Da, Bassig, Ba, Beane Freeman, Le, Berg, Cd, Berndt, Si, Bertazzi, Pa, Biritwum, Rb, Black, A, Blot, W, Boeing, H, Boffetta, P, Bolton, K, Boutron Ruault, Mc, Bracci, Pm, Brennan, P, Brinton, La, Brotzman, M, Bueno de Mesquita, Hb, Buring, Je, Butler, Ma, Cai, Q, Cancel Tassin, G, Canzian, F, Cao, G, Caporaso, Ne, Carrato, A, Carreon, T, Carta, A, Chang, Gc, Chang, I, Chang Claude, J, Che, X, Chen, Cj, Chen, Cy, Chen, Ch, Chen, C, Chen, Ky, Chen, Ym, Chokkalingam, Ap, Chu, Lw, Clavel Chapelon, F, Colditz, Ga, Colt, J, Conti, D, Cook, Mb, Cortessis, Vk, Crawford, Ed, Cussenot, O, Davis, Fg, De Vivo, I, Deng, X, Ding, T, Dinney, Cp, Di Stefano, Al, Diver, Wr, Duell, Ej, Elena, Jw, Fan, Jh, Feigelson, H, Feychting, M, Figueroa, Jd, Flanagan, Am, Fraumeni JF, Jr, Freedman, Nd, Fridley, Bl, Fuchs, C, Gago Dominguez, M, Gallinger, S, Gao, Yt, Gapstur, Sm, Garcia Closas, M, Garcia Closas, R, Gastier Foster, Jm, Gaziano, Jm, Gerhard, D, Giffen, Ca, Giles, Gg, Gillanders, Em, Giovannucci, El, Goggins, M, Gokgoz, N, Goldstein, Am, Gonzalez, C, Gorlick, R, Greene, Mh, Gross, M, Grossman, Hb, Grubb R., 3rd, Gu, J, Guan, P, Haiman, Ca, Hallmans, G, Hankinson, Se, Harris, Cc, Hartge, P, Hattinger, C, Hayes, Rb, He, Q, Helman, L, Henderson, Be, Henriksson, R, Hoffman Bolton, J, Hohensee, C, Holly, Ea, Hong, Yc, Hoover, Rn, Hosgood HD, 3rd, Hsiao, Cf, Hsing, Aw, Hsiung, Ca, Hu, N, Hu, W, Hu, Z, Huang, M, Hunter, Dj, Inskip, Pd, Ito, H, Jacobs, Ej, Jacobs, Kb, Jenab, M, Ji, Bt, Johansen, C, Johansson, M, Johnson, A, Kaaks, R, Kamat, Am, Kamineni, A, Karagas, M, Khanna, C, Khaw, Kt, Kim, C, Kim, I, Kim, Yh, Kim, Yc, Kim, Yt, Kang, Ch, Jung, Yj, Kitahara, Cm, Klein, Ap, Klein, R, Kogevinas, M, Koh, Wp, Kohno, T, Kolonel, Ln, Kooperberg, C, Kratz, Cp, Krogh, V, Kunitoh, H, Kurtz, Rc, Kurucu, N, Lan, Q, Lathrop, M, Lau, Cc, Lecanda, F, Lee, Km, Lee, Mp, Le Marchand, L, Lerner, Sp, Li, D, Liao, Lm, Lim, Wy, Lin, D, Lin, J, Lindstrom, S, Linet, M, Lissowska, J, Liu, J, Ljungberg, B, Lloreta, J, Lu, D, Ma, J, Malats, N, Mannisto, S, Marina, N, Mastrangelo, G, Matsuo, K, Mcglynn, Ka, McKean Cowdin, R, Mcneill, Lh, Mcwilliams, Rr, Melin, B, Meltzer, P, Mensah, Je, Miao, X, Michaud, D, Mondul, Am, Moore, Le, Muir, K, Niwa, S, Olson, Sh, Orr, N, Panico, Salvatore, Park, Jy, Patel, Av, Patino Garcia, A, Pavanello, S, Peeters, Ph, Peplonska, B, Peters, U, Petersen, Gm, Picci, P, Pike, Mc, Porru, S, Prescott, J, Pu, X, Purdue, Mp, Qiao, Yl, Rajaraman, P, Riboli, E, Risch, Ha, Rodabough, Rj, Rothman, N, Ruder, Am, Ryu, J, Sanson, M, Schned, A, Schumacher, Fr, Schwartz, Ag, Schwartz, Kl, Schwenn, M, Scotlandi, K, Seow, A, Serra, C, Serra, M, Sesso, Hd, Severi, G, Shen, H, Shen, M, Shete, S, Shiraishi, K, Shu, Xo, Siddiq, A, Sierrasesumaga, L, Sierri, S, Loon Sihoe, Ad, Silverman, Dt, Simon, M, Southey, Mc, Spector, L, Spitz, M, Stampfer, M, Stattin, P, Stern, Mc, Stevens, Vl, Stolzenberg Solomon, Rz, Stram, Do, Strom, S, Su, Wc, Sund, M, Sung, Sw, Swerdlow, A, Tan, W, Tanaka, H, Tang, W, Tang, Zz, Tardon, A, Tay, E, Taylor, Pr, Tettey, Y, Thomas, Dm, Tirabosco, R, Tjonneland, A, Tobias, G, Toro, Jr, Travis, Rc, Trichopoulos, D, Troisi, R, Truelove, A, Tsai, Yh, Tucker, Ma, Tumino, R, Van Den Berg, D, Van Den Eeden, Sk, Vermeulen, R, Vineis, P, Visvanathan, K, Vogel, U, Wang, C, Wang, J, Wang, S, Weiderpass, E, Weinstein, Sj, Wentzensen, N, Wheeler, W, White, E, Wiencke, Jk, Wolk, A, Wolpin, Bm, Wong, Mp, Wrensch, M, Wu, C, Wu, T, Wu, X, Wu, Yl, Wunder, J, Xiang, Yb, Xu, J, Yang, Hp, Yang, Pc, Yatabe, Y, Ye, Y, Yeboah, Ed, Yin, Z, Ying, C, Yu, Cj, Yu, K, Yuan, Jm, Zanetti, Ka, Zeleniuch Jacquotte, A, Zheng, W, Zhou, B, Mirabello, L, Savage, Sa, Kraft, P, Chanock, Sj, Yeager, M, Landi, Mt, Shi, J, Chatterjee, N, Amundadottir, Lt, Wang, Z., Zhu, B., Zhang, M., Parikh, H., Jia, J., Chung, C.C., Sampson, J.N., Hoskins, J.W., Hutchinson, A., Burdette, L., Ibrahim, A., Hautman, C., Raj, P.S., Abnet, C.C., Adjei, A.A., Ahlbom, A., Albanes, D., Allen, N.E., Ambrosone, C.B., Aldrich, M., Amiano, P., Amos, C., Andersson, U., Gerald Andriole, G.A., Jr., Andrulis, I.L., Arici, C., Arslan, A.A., Austin, M.A., Baris, D., Barkauskas, D.A., Bassig, B.A., Freeman, L.E.B., Berg, C.D., Berndt, S.I., Bertazzi, P.A., Biritwum, R.B., Black, A., Blot, W., Boeing, H., Boffetta, P., Bolton, K., Boutron-Ruault, M.-C., Bracci, P.M., Brennan, P., Brinton, L.A., Brotzman, M., Bueno-de-Mesquita, H.B., Buring, J.E., Butler, M.A., Cai, Q., Cancel-Tassin, G., Canzian, F., Cao, G., Caporaso, N.E., Carrato, A., Carreon, T., Carta, A., Chang, G.-C., Chang, I.-S., Chang-Claude, J., Che, X., Chen, C.-J., Chen, C.-Y., Chen, C.-H., Chen, C., Chen, K.-Y., Chen, Y.-M., Chokkalingam, A.P., Chu, L.W., Clavel-Chapelon, F., Colditz, G.A., Colt, J.S., Conti, D., Cook, M.B., Cortessis, V.K., Crawford, E.D., Cussenot, O., Davis, F.G., De Vivo, I., Deng, X., Ding, T., Dinney, C.P., Di Stefano, A.L., Diver, W.R., Duell, E.J., Elena, J.W., Fan, J.-H., Feigelson, H.S., Feychting, M., Figueroa, J.D., Flanagan, A.M., Fraumeni, J.F., Jr., Freedman, N.D., Fridley, B.L., Fuchs, C.S., Gago-Dominguez, M., Gallinger, S., Gao, Y.-T., Gapstur, S.M., Garcia-Closas, M., Garcia-Closas, R., Gastier-Foster, J.M., Gaziano, J.M., Gerhard, D.S., Giffen, C.A., Giles, G.G., Gillanders, E.M., Giovannucci, E.L., Goggins, M., Gokgoz, N., Goldstein, A.M., Gonzalez, C., Gorlick, R., Greene, M.H., Gross, M., Grossman, H.B., Grubb, R., III and Gu, J., Guan, P., Haiman, C.A., Hallmans, G., Hankinson, S.E., Harris, C.C., Hartge, P., Hattinger, C., Hayes, R.B., He, Q., Helman, L., Henderson, B.E., Henriksson, R., Hoffman-Bolton, J., Hohensee, C., Holly, E.A., Hong, Y.-C., Hoover, R.N., Dean Hosgood, H., Hsiao, C.-F., Hsing, A.W., Hsiung, C.A., Hu, N., Hu, W., Hu, Z., Huang, M.-S., Hunter, D.J., Inskip, P.D., Ito, H., Jacobs, E.J., Jacobs, K.B., Jenab, M., Ji, B.-T., Johansen, C., Johansson, M., Johnson, A., Kaaks, R., Kamat, A.M., Kamineni, A., Karagas, M., Khanna, C., Khaw, K.-T., Kim, C., Kim, I.-S., Kim, J.H., Kim, Y.H., Kim, Y.-C., Kim, Y.T., Kang, C.H., Jung, Y.J., Kitahara, C.M., Klein, A.P., Klein, R., Kogevinas, M., Koh, W.-P., Kohno, T., Kolonel, L.N., Kooperberg, C., Kratz, C.P., Krogh, V., Kunitoh, H., Kurtz, R.C., Kurucu, N., Lan, Q., Lathrop, M., Lau, C.C., Lecanda, F., Lee, K.-M., Lee, M.P., Marchand, L.L., Lerner, S.P., Li, D., Liao, L.M., Lim, W.-Y., Lin, D., Lin, J., Lindstrom, S., Linet, M.S., Lissowska, J., Liu, J., Ljungberg, B., Lloreta, J., Lu, D., Ma, J., Malats, N., Mannisto, S., Marina, N., Mastrangelo, G., Matsuo, K., McGlynn, K.A., McKean-Cowdin, R., McNeil, L.H., McWilliams, R.R., Melin, B.S., Meltzer, P.S., Mensah, J.E., Miao, X., Michaud, D.S., Mondul, A.M., Moore, L.E., Muir, K., Niwa, S., Olson, S.H., Orr, N., Panico, S., Park, J.Y., Patel, A.V., Patino-Garcia, A., Pavanello, S., Peeters, P.H.M., Peplonska, B., Peters, U., Petersen, G.M., Picci, P., Pike, M.C., Porru, S., Prescott, J., Pu, X., Purdue, M.P., Qiao, Y.-L., Rajaraman, P., Riboli, E., Risch, H.A., Rodabough, R.J., Rothman, N., Ruder, A.M., Ryu, J.-S., Sanson, M., Schned, A., Schumacher, F.R., Schwartz, A.G., Schwartz, K.L., Schwenn, M., Scotlandi, K., Seow, A., Serra, C., Serra, M., Sesso, H.D., Severi, G., Shen, H., Shen, M., Shete, S., Shiraishi, K., Shu, X.-O., Siddiq, A., Sierrasesumaga, L., Sierri, S., Sihoe, A.D.L., Silverman, D.T., Simon, M., Southey, M.C., Spector, L., Spitz, M., Stampfer, M., Stattin, P., Stern, M.C., Stevens, V.L., Stolzenberg-Solomon, R.Z., Stram, D.O., Strom, S.S., Su, W.-C., Sund, M., Sung, S.W., Swerdlow, A., Tan, W., Tanaka, H., Tang, W., Tang, Z.-Z., Tardon, A., Tay, E., Taylor, P.R., Tettey, Y., Thomas, D.M., Tirabosco, R., Tjonneland, A., Tobias, G.S., Toro, J.R., Travis, R.C., Trichopoulos, D., Troisi, R., Truelove, A., Tsai, Y.-H., Tucker, M.A., Tumino, R., Van Den Berg, D., Van Den Eeden, S.K., Vermeulen, R., Vineis, P., Visvanathan, K., Vogel, U., Wang, C., Wang, J., Wang, S.S., Weiderpass, E., Weinstein, S.J., Wentzensen, N., Wheeler, W., White, E., Wiencke, J.K., Wolk, A., Wolpin, B.M., Wong, M.P., Wrensch, M., Wu, C., Wu, T., Wu, X., Wu, Y.-L., Wunder, J.S., Xiang, Y.-B., Xu, J., Yang, H.P., Yang, P.-C., Yatabe, Y., Ye, Y., Yeboah, E.D., Yin, Z., Ying, C., Yu, C.-J., Yu, K., Yuan, J.-M., Zanetti, K.A., Zeleniuch-Jacquotte, A., Zheng, W., Zhou, B., Mirabello, L., Savage, S.A., Kraft, P., Chanock, S.J., Yeager, M., Landi, M.T., Shi, J., Chatterjee, N., and Amundadottir, L.T.

Subjects
Male, SINGLE-NUCLEOTIDE POLYMORPHISM, Genome-wide association study, Epigenesis, Genetic, Gene Frequency, Molecular Biology, Genetics, Genetics (clinical), Neoplasms, Odds Ratio, Genome-wide association studies (GWAS), Telomerase, DNA METHYLATION Author Information, Association Studies Articles, General Medicine, PANCREATIC-CANCER, PROSTATE-CANCER, Neoplasm Proteins, POSTMENOPAUSAL BREAST-CANCER, TERT PROMOTER MUTATIONS, Gene Expression Regulation, Neoplastic, 2 SUSCEPTIBILITY LOCI, DNA methylation, Chromosomes, Human, Pair 5, Female, Risk, Locus (genetics), Single-nucleotide polymorphism, TERT and CLPTM1L gene, Biology, Polymorphism, Single Nucleotide, LUNG-CANCER, Humans, Genetic Predisposition to Disease, GENOME-WIDE ASSOCIATION, Allele, Gene, Allele frequency, Alleles, Genetic association, chromosome 5p15.33, Computational Biology, Membrane Proteins, DNA Methylation, Genetic Loci, TELOMERE LENGTH, Genome-Wide Association Study
Abstract

Genome-wide association studies (GWAS) have mapped risk alleles for at least 10 distinct cancers to a small region of 63 000 bp on chromosome 5p15.33. This region harbors the TERT and CLPTM1L genes; the former encodes the catalytic subunit of telomerase reverse transcriptase and the latter may play a role in apoptosis. To investigate further the genetic architecture of common susceptibility alleles in this region, we conducted an agnostic subset-based meta-analysis (association analysis based on subsets) across six distinct cancers in 34 248 cases and 45 036 controls. Based on sequential conditional analysis, we identified as many as six independent risk loci marked by common single-nucleotide polymorphisms: five in the TERT gene (Region 1: rs7726159, P = 2.10 x 10(-39); Region 3: rs2853677, P = 3.30 x 10(-36) and PConditional = 2.36 x 10(-8); Region 4: rs2736098, P = 3.87 x 10(-12) and PConditional = 5.19 x 10(-6), Region 5: rs13172201, P = 0.041 and PConditional = 2.04 x 10(-6); and Region 6: rs10069690, P = 7.49 x 10(-15) and PConditional = 5.35 x 10(-7)) and one in the neighboring CLPTM1L gene (Region 2: rs451360; P = 1.90 x 10(-18) and PConditional = 7.06 x 10(-16)). Between three and five cancers mapped to each independent locus with both risk-enhancing and protective effects. Allele-specific effects on DNA methylation were seen for a subset of risk loci, indicating that methylation and subsequent effects on gene expression may contribute to the biology of risk variants on 5p15.33. Our results provide strong support for extensive pleiotropy across this region of 5p15.33, to an extent not previously observed in other cancer susceptibility loci.

Published
2014

4. The Parkinson’s disease-linked protein TMEM230 is required for Rab8a-mediated secretory vesicle trafficking and retromer trafficking

Author

Myung Jong Kim, Teepu Siddique, Yvette C. Wong, Dimitri Krainc, and Han Xiang Deng

Subjects
0301 basic medicine, Retromer, Golgi Apparatus, Biology, Leucine-Rich Repeat Serine-Threonine Protein Kinase-2, Thymus Extracts, 03 medical and health sciences, Chlorocebus aethiops, Genetics, Animals, Humans, Small GTPase, Secretion, Phosphorylation, Molecular Biology, Genetics (clinical), Secretory pathway, LRRK2 Gene, Secretory Vesicles, Autophagy, Membrane Proteins, Parkinson Disease, Articles, General Medicine, LRRK2, Secretory Vesicle, Cell biology, HEK293 Cells, 030104 developmental biology, rab GTP-Binding Proteins, COS Cells
Abstract

TMEM230 is a newly identified Parkinson's disease (PD) gene encoding a transmembrane protein whose cellular and pathogenic roles remain largely unknown. Here, we demonstrate that loss of TMEM230 disrupts retromer cargo CI-M6PR (cation-independent mannose 6-phosphate receptor) trafficking and autophagic cargo degradation rates. TMEM230 depletion further inhibits extracellular secretion of the autophagic cargo p62 and immature lysosomal hydrolases in Golgi-derived vesicles leading to their intracellular accumulation, and is specifically mediated by loss of the small GTPase Rab8a. Importantly, PD-linked TMEM230 variants also induce retromer mislocalization, defective cargo trafficking, and impaired autophagy. Finally, we show that knockdown of another PD gene, LRRK2, which phosphorylates Rab8a, similarly impairs retromer trafficking, secretory autophagy and Golgi-derived vesicle secretion, thus demonstrating converging roles of two PD genes TMEM230 and LRRK2 on Rab8a function, and suggesting that retromer and secretory dysfunction play an important role in PD pathogenesis.

Published
2017

5. Genome-wide association study identifies multiple loci associated with bladder cancer risk

Author

Núria Malats, Paul Brenan, Chancellor Hohensee, M. Rouprêt, Manolis Kogevinas, Nilanjan Chatterjee, Ruth C. Travis, Gerald L. Andriole, Rebecca Rodabough, Jarmo Virtamo, Amanda Black, H. Barton Grossman, Angela Carta, Robert L. Grubb, William Wheeler, David J. Hunter, Jennifer Prescott, Manuela Gago-Dominguez, Jian Gu, Wei Tang, Dalsu Baris, Afshan Siddiq, Karla R. Armenti, Nathaniel Rothman, Mark P. Purdue, Eva Compérat, Demetrius Albanes, Christopher A. Haiman, Zhaoming Wang, Dimitrios Trichopoulos, Françoise Clavel-Chapelon, Debra T. Silverman, Colin P.N. Dinney, David Van Den Berg, H. Bas Bueno-de-Mesquita, Xia Pu, W. Ryan Diver, Peter Kraft, Reina García-Closas, Stephanie J. Weinstein, Stephen J. Chanock, Edward Giovannucci, Neil E. Caporaso, Vittorio Krogh, Jonine D. Figueroa, Joseph F. Fraumeni, Molly Schwenn, Olivier Cussenot, Ashish M. Kamat, Charles C. Chung, Elio Riboli, Victoria K. Cortessis, Immaculata De Vivo, Stefano Porru, Consol Serra, Laurie Burdette, Xiang Deng, Miren Dorronsoro, Anne Tjønneland, Sara Lindström, Seth P. Lerner, Cecilia Arici, Alison Johnson, Josep Lloreta, Amy Hutchinson, Jie Lin, Margaret R. Karagas, Malcolm C. Pike, Elisabete Weiderpass, Maria Teresa Landi, Susan M. Gapstur, Yuanqing Ye, Montserrat Garcia-Closas, Börje Ljungberg, G. M. Hosain, G. Cancel-Tassin, Paolo Vineis, Adonina Tardón, Giuseppe Mastrangelo, Eric J. Jacobs, Mariana C. Stern, Jian-Min Yuan, Xifeng Wu, Constance Chen, Jenny Chang-Claude, Ludmila Prokunina-Olsson, David V. Conti, Sofia Pavanello, Alfredo Carrato, Charles Kooperberg, Simone Benhamou, and Alan R. Schned

Subjects
Risk, medicine.medical_specialty, Linkage disequilibrium, Genotype, Genomics, Genome-wide association study, Single-nucleotide polymorphism, Biology, Polymorphism, Single Nucleotide, Linkage Disequilibrium, Meta-Analysis as Topic, Genetics, medicine, Humans, Genetic Predisposition to Disease, Association Studies Article, Molecular Biology, Genetics (clinical), Genetic association, Bladder cancer, Case-control study, General Medicine, medicine.disease, 3. Good health, Urinary Bladder Neoplasms, Genetic Loci, Case-Control Studies, Medical genetics, Genome-Wide Association Study
Abstract

Candidate gene and genome-wide association studies (GWAS) have identified 11 independent susceptibility loci associated with bladder cancer risk. To discover additional risk variants, we conducted a new GWAS of 2422 bladder cancer cases and 5751 controls, followed by a meta-analysis with two independently published bladder cancer GWAS, resulting in a combined analysis of 6911 cases and 11 814 controls of European descent. TaqMan genotyping of 13 promising single nucleotide polymorphisms with P < 1 × 10(-5) was pursued in a follow-up set of 801 cases and 1307 controls. Two new loci achieved genome-wide statistical significance: rs10936599 on 3q26.2 (P = 4.53 × 10(-9)) and rs907611 on 11p15.5 (P = 4.11 × 10(-8)). Two notable loci were also identified that approached genome-wide statistical significance: rs6104690 on 20p12.2 (P = 7.13 × 10(-7)) and rs4510656 on 6p22.3 (P = 6.98 × 10(-7)); these require further studies for confirmation. In conclusion, our study has identified new susceptibility alleles for bladder cancer risk that require fine-mapping and laboratory investigation, which could further understanding into the biological underpinnings of bladder carcinogenesis.

Published
2014

6. Genetics of amyotrophic lateral sclerosis

Author

Han Xiang Deng and Teepu Siddique

Subjects
Genetically modified mouse, Chromosomes, Human, Pair 21, SOD1, Mice, Transgenic, medicine.disease_cause, Pathogenesis, Superoxide dismutase, Mice, Genetics, medicine, Animals, Humans, Amyotrophic lateral sclerosis, Molecular Biology, Genetics (clinical), Mutation, biology, Superoxide Dismutase, Amyotrophic Lateral Sclerosis, General Medicine, Motor neuron, Spinal cord, medicine.disease, Cell biology, Disease Models, Animal, Zinc, medicine.anatomical_structure, biology.protein, Copper
Abstract

Amyotrophic lateral sclerosis (ALS) is a paralytic disorder caused by degeneration of motor neurons in the brain and spinal cord. Identification of mutations in the gene for Cu,Zn superoxide dismutase (SOD1) in a subset of ALS families made it possible to develop a transgenic mouse model of ALS and to investigate its pathogenesis. These investigations suggest that mutant SOD1 acts through a toxic gain of function which may involve generation of free radicals. Conformational change in the mutant SOD1 protein, especially the distortion of the 'rim' of the electrostatic guidance channel may be central to this toxic gain of function and to the pathogenesis of ALS.

Published
1996

7. Linkage of scapuloperoneal spinal muscular atrophy to chromosome 12q24.1-q24.31

Author

Kirk C. Wilhelmsen, Kazuo Isozumi, Zafar Iqbal, Afif Hentati, Wu Yen Hung, Jocelyn Kaplan, Han Xiang Deng, Teepu Siddique, Margaret A. Pericak-Vance, and Robert DeLong

Subjects
Male, Pathology, medicine.medical_specialty, Genetic Linkage, Locus (genetics), Biology, Polymerase Chain Reaction, Muscular Atrophy, Spinal, Central nervous system disease, Atrophy, Gene mapping, Genetic linkage, Genetics, medicine, Humans, Facioscapulohumeral muscular dystrophy, Muscular dystrophy, Molecular Biology, Genetics (clinical), Chromosomes, Human, Pair 12, Chromosome Mapping, Peroneal Nerve, General Medicine, Anatomy, Spinal muscular atrophy, medicine.disease, Pedigree, Scapula, Female, Lod Score
Abstract

Scapuloperoneal (SP) syndromes are heterogeneous neuromuscular disorders which are characterized by weakness in the distribution of shoulder girdle and peroneal muscles. SP syndromes can resemble facioscapulohumeral muscular dystrophy (FSH) due to scapular weakness or Charcot-Marie-Tooth disease (CMT) due to atrophy of peroneal muscles. Both neurogenic and myopathic SP syndromes have been described. Locus for the myopathic form of SP syndrome (scapuloperoneal muscular dystrophy, SPMD) has recently been assigned to chromosome 12q. We previously described a large New England kindred exhibiting an autosomal dominant neurogenic SP syndrome (scapuloperoneal spinal muscular atrophy, SPSMA). Disease expression was more severe and progressive in successive generations, which suggested genetic anticipation. We performed genetic linkage analysis of this family with microsatellite markers and excluded the loci for FSH, CMT, SPMD and SMA (spinal muscular atrophy) in our family. Linkage in our SPSMA family (lod score > 3) was established to seven microsatellite markers that map to chromosome 12q24.1-q24.31. The highest lod score with two-point linkage analysis was 6.67 (theta = 0.00) with marker D12S353. Multipoint analysis gave maximum lod scores of 7.38 between D12S354 and D12S79, and also 7.38 between D12S369 and NOS1 (neuronal nitric oxide synthase). The gene for SPSMA lies within the 19 cM interval between D12S338 and D12S366. This report establishes a locus for the neurogenic form of SP syndrome approximately 20 cM telomeric to the one described for the myopathic form of SP syndrome.

Published
1996

8. The D90A mutation results in a polymorphism of Cu, Zn superoxide dismutase that is prevalent in northern Sweden and Finland

Author

Han Xiang Deng, Gunhild Beckman, Teepu Siddique, John A. Tainer, A. Själander, and Z. Lqbal

Subjects
Sweden, Veterinary medicine, Polymorphism, Genetic, Base Sequence, biology, Protein Conformation, Superoxide Dismutase, Point mutation, Amyotrophic Lateral Sclerosis, DNA Mutational Analysis, Molecular Sequence Data, Cu-Zn Superoxide Dismutase, Exons, General Medicine, Crystallography, X-Ray, Superoxide dismutase, Genetics, biology.protein, Humans, Point Mutation, Base sequence, Molecular Biology, Finland, Genetics (clinical), DNA Primers
Published
1995

9. Wild-type SOD1 overexpression accelerates disease onset of a G85R SOD1 mouse

Author

Hong Zhai, Han Xiang Deng, Lijun Wang, Raymond P. Roos, Gabriella Grisotti, and Teepu Siddique

Subjects
Genetically modified mouse, Male, Ratón, Transgene, Mutant, SOD1, Mutation, Missense, Gene Expression, Mice, Transgenic, medicine.disease_cause, Superoxide dismutase, Mice, Superoxide Dismutase-1, Genetics, medicine, Animals, Humans, Molecular Biology, Genetics (clinical), Mutation, biology, Superoxide Dismutase, Amyotrophic Lateral Sclerosis, Wild type, General Medicine, Articles, Molecular biology, Mice, Inbred C57BL, Disease Models, Animal, Spinal Cord, biology.protein, Disease Progression, Female, Dimerization
Abstract

Approximately 10% of amyotrophic lateral sclerosis (ALS) cases are familial (FALS), and approximately 25% of FALS cases are caused by mutations in Cu/Zn superoxide dismutase type 1 (SOD1). Mutant (MT) SOD1 is thought to be pathogenic because it misfolds and aggregates. A number of transgenic mice have been generated that express different MTSOD1s as transgenes and exhibit an ALS-like disease. Although one study found that overexpression of human wild-type (WT) SOD1 did not affect disease in G85R transgenic mice, more recent reports claim that overexpression of WTSOD1 in other MTSOD1 transgenic mice hastened disease, raising a possibility that the effect of WTSOD1 overexpression in this FALS mouse model is mutant-specific. In order to clarify this issue, we studied the effect of WTSOD1 overexpression in a G85R transgenic mouse that we recently generated. We found that G85R/WTSOD1 double transgenic mice had an acceleration of disease onset and shortened survival compared with G85R single transgenic mice; in addition, there was an earlier appearance of pathological and immunohistochemical abnormalities. The spinal cord insoluble fraction from G85R/WTSOD1 mice had evidence of G85R-WTSOD1 heterodimers and WTSOD1 homodimers (in addition to G85R homodimers) with intermolecular disulfide bond cross-linking. These studies suggest that WTSOD1 can be recruited into disease-associated aggregates by redox processes, providing an explanation for the accelerated disease seen in G85R mice following WTSOD1 overexpression, and suggesting the importance of incorrect disulfide-linked protein as key to MTSOD1 toxicity.

Published
2009

10. Distal axonopathy in an alsin-deficient mouse model

Author

Erdong Liu, Han Xiang Deng, Yi Yang, George Gorrie, Ronggen Fu, Teepu Siddique, Mauro C. Dal Canto, Enrico Mugnaini, Yong Shi, and Hong Zhai

Subjects
Male, Juvenile amyotrophic lateral sclerosis, Central nervous system, Molecular Sequence Data, Biology, medicine.disease_cause, Mice, Superoxide Dismutase-1, Pregnancy, Genetics, medicine, Deficient mouse, Animals, Guanine Nucleotide Exchange Factors, Humans, Juvenile primary lateral sclerosis, Amino Acid Sequence, Amyotrophic lateral sclerosis, Molecular Biology, Genetics (clinical), Mice, Knockout, Motor Neurons, Mutation, Superoxide Dismutase, Amyotrophic Lateral Sclerosis, Brain, General Medicine, Anatomy, Exons, Motor neuron, medicine.disease, Spinal cord, Axons, Disease Models, Animal, medicine.anatomical_structure, Spinal Cord, Female, Neuroscience
Abstract

Mutations in Alsin are associated with chronic juvenile amyotrophic lateral sclerosis (ALS2), juvenile primary lateral sclerosis and infantile-onset ascending spastic paralysis. The primary pathology and pathogenic mechanism of the disease remain largely unknown. Here we show that alsin-deficient mice have motor impairment and degenerative pathology in the distal corticospinal tracts without apparent motor neuron pathology. Our data suggest that ALS2 is predominantly a distal axonopathy, rather than a neuronopathy in the central nervous system of the mouse model, implying that alsin plays an important role in maintaining the integrity of the corticospinal axons.

Published
2007

11. Two novel SOD1 mutations in patients with familial amyotrophic lateral sclerosis

Author

Teepu Siddique, Hiroshi Mitsumoto, Yaliang Zhao, Xiaoxuan He, Afif Hentati, John A. Tainer, Wu Yen Hung, Tony Juneja, Han Xiang Deng, and Akio Ohnishi

Subjects
Pathology, medicine.medical_specialty, Protein Conformation, SOD1, Molecular Sequence Data, Biology, medicine.disease_cause, Crystallography, X-Ray, AMYOTROPHIC LATERAL SCLEROSIS 1, Central nervous system disease, Degenerative disease, Leucine, Genetics, medicine, Humans, Base sequence, In patient, Amyotrophic lateral sclerosis, Molecular Biology, Genetics (clinical), DNA Primers, Mutation, Base Sequence, Superoxide Dismutase, Amyotrophic Lateral Sclerosis, Valine, General Medicine, medicine.disease
Published
1995

12. Molecular dissection of ALS-associated toxicity of SOD1 in transgenic mice using an exon-fusion approach.

Author

Deng HX, Jiang H, Fu R, Zhai H, Shi Y, Liu E, Hirano M, Dal Canto MC, and Siddique T

Subjects
Amino Acid Sequence genetics, Amyotrophic Lateral Sclerosis pathology, Animals, Codon, Nonsense, DNA Mutational Analysis, Disease Models, Animal, Exons, Humans, Mice, Mice, Transgenic, RNA Stability, RNA, Messenger metabolism, Sequence Deletion, Superoxide Dismutase-1, Amyotrophic Lateral Sclerosis enzymology, Amyotrophic Lateral Sclerosis genetics, Artificial Gene Fusion methods, Superoxide Dismutase genetics, Superoxide Dismutase metabolism
Abstract

Mutations in Cu,Zn superoxide dismutase (SOD1) are associated with amyotrophic lateral sclerosis (ALS). Among more than 100 ALS-associated SOD1 mutations, premature termination codon (PTC) mutations exclusively occur in exon 5, the last exon of SOD1. The molecular basis of ALS-associated toxicity of the mutant SOD1 is not fully understood. Here, we show that nonsense-mediated mRNA decay (NMD) underlies clearance of mutant mRNA with a PTC in the non-terminal exons. To further define the crucial ALS-associated SOD1 fragments, we designed and tested an exon-fusion approach using an artificial transgene SOD1(T116X) that harbors a PTC in exon 4. We found that the SOD1(T116X) transgene with a fused exon could escape NMD in cellular models. We generated a transgenic mouse model that overexpresses SOD1(T116X). This mouse model developed ALS-like phenotype and pathology. Thus, our data have demonstrated that a 'mini-SOD1' of only 115 amino acids is sufficient to cause ALS. This is the smallest ALS-causing SOD1 molecule currently defined. This proof of principle result suggests that the exon-fusion approach may have potential not only to further define a shorter ALS-associated SOD1 fragment, thus providing a molecular target for designing rational therapy, but also to dissect toxicities of other proteins encoded by genes of multiple exons through a 'gain of function' mechanism.

Published
2008
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