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3 results on '"Teng, XK"'

1. Single-crystal growth and superconductivity in RbNi2Se2

Author

Liu, H, Liu, H, Hu, X, Guo, H, Teng, XK, Bu, H, Luo, Z, Li, L, Liu, Z, Huo, M, Liang, F, Sun, H, Shen, B, Dai, P, Birgeneau, RJ, Yao, DX, Yi, M, Wang, M, Liu, H, Liu, H, Hu, X, Guo, H, Teng, XK, Bu, H, Luo, Z, Li, L, Liu, Z, Huo, M, Liang, F, Sun, H, Shen, B, Dai, P, Birgeneau, RJ, Yao, DX, Yi, M, and Wang, M

Abstract

We report the synthesis and characterization of RbNi2Se2, an analog of the iron chalcogenide superconductor RbxFe2Se2, via transport, angle-resolved photoemission spectroscopy, and density functional theory calculations. A superconducting transition at Tc=1.20 K is identified. In the normal state, RbNi2Se2 shows paramagnetic and Fermi-liquid behaviors. A large Sommerfeld coefficient yields an effective electron mass of m∗≈6me. In the superconducting state, zero-field electronic specific-heat data Ces can be described by a two-gap BCS model, indicating that RbNi2Se2 is a possible multigap superconductor. Our density functional theory calculations and angle-resolved photoemission spectroscopy measurements demonstrate that RbNi2Se2 exhibits relatively weak correlations and multiband characteristics, consistent with the multigap superconductivity.

Published
2022

2. A novel spermatogenesis-specific uPAR gene expressed in human and mouse testis

Author

Teng, XK, Yang, J., Xie, Y., Ni, ZM, Hu, RY, Shi, L., Lin, ZX, Hu, LD, Zhao, GP, Ding, XY, Kong, XY, Teng, XK, Yang, J., Xie, Y., Ni, ZM, Hu, RY, Shi, L., Lin, ZX, Hu, LD, Zhao, GP, Ding, XY, and Kong, XY

Abstract

The urokinase receptor, uPAR, which binds to the Urinary-type plasminogen activator, controls matrix degradation in the processes of tissue remodeling, cell migration, and invasion. In the present study, we found a new urokinase receptor gene that encodes a 249-amino acid putative protein. Northern blot analysis showed specific expression in the testis of this gene, which we named the spermatogenesis-related gene (SGRG). In situ hybridization revealed a strong expression signal for SGRG in spermatogonia, but not in spermatocytes. Therefore, we conjecture that SGRG may regulate spermatocyte migration through breakdown of extracellular matrix protein barriers in spermatogenesis. Since SGRG is specifically expressed in spermatogonia, it provides an attractive candidate for development of it contraceptive vaccine. (c) 2006 Elsevier Inc. All rights reserved.

Published
2006

3. Identification of linkage disequilibrium SNPs from a Kidney-Yang Deficiency Syndrome Pedigree.

Author

Ding WJ, Zeng YZ, Li WH, Zhang TE, Liu WW, Teng XK, Ma YX, Yan SL, Wan JM, and Wang M

Abstract

In order to probe the genetic traits of Kidney-yang Deficiency Syndrome (KDS), we employed a national standard of KDS diagnosis for the collection of KDS subjects. Each candidate KDS subject from a typical family was diagnosed by 5 independent physicians of Traditional Chinese Medicine (TCM), and repeated for 3 years, all on the first Saturday of December. Fifteen samples of genomic DNA were isolated and genotyped by Affymetrix 100 K arrays of single nucleotide polymorphism (SNP). Then appropriate tools were used for the analysis of linkage disequilibrium (LD) and bioinformatic mining of LD SNPs. The results indicated that our procedure of TCM diagnosis can effectively collect KDS subjects and therefore provide substantial basis for the linkage analysis of KDS. Five SNPs (i.e. rs514207, rs1054020, rs7685923, rs10515889 and rs10516202) were identified as LD SNPs from this KDS family, representing an unprecedented set of LD SNPs derived from TCM syndrome. These SNPs demonstrate midrange linkage disequilibrium within the KDS family. Two genes with established functions were identified within 100 bp of these SNPs. One is Homo sapiens double cortin domain containing 5, which interacts selectively with mono-, di- or tri-saccharide carbohydrate and involves certain signaling cascades. Another one, leucyl-tRNA synthetase, is also a pleiotropic gene response to cysteinyl-tRNA aminoacylation and protein biosynthesis. In conclusion, KDS is involved in special SNP linkage disequilibrium in the intragenic level, and genes within the flanks of these SNPs suggest some essential symptoms of KDS. However, definitive evidence to confirm or exclude these loci and to establish their biological activities will be required. [ABSTRACT FROM AUTHOR]

Published
2009
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