1. NUP98-p65 complex regulates DNA repair to maintain glioblastoma stem cells.
- Author
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Li F, Zhang Y, Li J, Jiang R, and Ci S
- Subjects
- Humans, Mice, Animals, Cell Line, Tumor, Transcription Factor RelA metabolism, Transcription Factor RelA genetics, Brain Neoplasms pathology, Brain Neoplasms metabolism, Brain Neoplasms genetics, DNA Damage, Gene Expression Regulation, Neoplastic, Mice, Nude, Glioblastoma metabolism, Glioblastoma pathology, Glioblastoma genetics, Neoplastic Stem Cells metabolism, Neoplastic Stem Cells pathology, Nuclear Pore Complex Proteins metabolism, Nuclear Pore Complex Proteins genetics, DNA Repair
- Abstract
The nuclear pore complex (NPC) is an evolutionarily conserved structure that maintains the traffic between the nucleus and cytoplasm. Here, we profiled the expression of nucleoporins (NUPs) in glioblastoma stem cells (GSCs) and found that NUP98 promoted GSC maintenance and therapeutic resistance. GSCs preferentially expressed NUP98, which is essential for GSC tumorigenesis in vitro and in vivo. RNA sequencing demonstrated that NUP98 regulated the expression of key DNA damage and repair pathways. NUP98 formed a complex with transcription factor p65 to directly activate genes involved in homologous repair. Attenuation of NUP98 or p65 expression induced unrepaired intrinsic DNA damage and sensitized GSC to ionizing radiation. Clinically, overexpression of NUP98 informs poor clinical outcome among glioblastoma (GBM) patients. Collectively, our results demonstrate that NUP98-p65 represents a novel node in the regulation of DNA repair, suggesting a therapeutic strategy with potential clinical benefits for GBM patients., (© 2025 Federation of American Societies for Experimental Biology.)
- Published
- 2025
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