Meiotic gatekeeper STRA8 regulates cell cycle by interacting with SETD8 during spermatogenesis
| Autor: | Jing Xia, Changmin Niu, Ying Zheng, Xueyi Shen, Jiaqian Guo, Shikun Ma, Mengmeng Xia |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0301 basic medicine
Male Cell Retinoic acid Biology 03 medical and health sciences chemistry.chemical_compound Mice 0302 clinical medicine Testis medicine Transcriptional regulation PCNA Animals stimulated by retinoic acid gene 8 transcriptional regulation Promoter Regions Genetic Gene STRA8 Gene Adaptor Proteins Signal Transducing Gene Expression Regulation Developmental Cell Differentiation Cell Biology Original Articles Histone-Lysine N-Methyltransferase Cell cycle SETD8 spermatogenesis Spermatogonia Cell biology Meiosis 030104 developmental biology medicine.anatomical_structure Germ Cells chemistry Cell culture 030220 oncology & carcinogenesis Molecular Medicine Original Article cell cycle Stem cell Cdl4‐Clu4A‐Ddb1 ubiquitinated degradation axis |
| Zdroj: | Journal of Cellular and Molecular Medicine |
| ISSN: | 1582-4934 1582-1838 |
| Popis: | STRA8 (Stimulated By Retinoic Acid Gene 8) is a retinoic acid (RA) induced gene that plays vital roles in spermatogonial proliferation, differentiation and meiosis. The SETD8 and STRA8 protein interaction was discovered using the yeast two‐hybrid technique using a mouse spermatogonial stem cell (SSC) cDNA library. The interaction of these two proteins was confirmed using co‐immunoprecipitation and identification of key domains governing the protein: protein complex. STRA8 and SETD8 showed a mutual transcriptional regulation pattern that provided evidence that SETD8 negatively regulated transcriptional activity of the STRA8 promoter. The SETD8 protein directly bound to the proximal promoter of the STRA8 gene. STRA8 increased the transcriptional activity of SETD8 promoter in a dose‐dependent manner. For the first time, we have discovered that STRA8 and SETD8 display a cell cycle‐dependent expression pattern in germline cells. Expression levels of SETD8 and H4K20me1 in S phase of STRA8 overexpression GC1 cells were different from that previously observed in tumour cell lines. In wild‐type mice testis, SETD8, H4K20me1 and PCNA co‐localized with STRA8 in spermatogonia. Further, our studies quantitated abnormal expression levels of cell cycle and ubiquitination‐related factors in STRA8 dynamic models. STRA8 and SETD8 may regulate spermatogenesis via Cdl4‐Clu4A‐Ddb1 ubiquitinated degradation axis in a PCNA‐dependent manner. |
| Databáze: | OpenAIRE |
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