論文 - 詳細
| RRC ID | 11972 |
|---|---|
| 著者 | Takashima S, Takehashi M, Lee J, Chuma S, Okano M, Hata K, Suetake I, Nakatsuji N, Miyoshi H, Tajima S, Tanaka Y, Toyokuni S, Sasaki H, Kanatsu-Shinohara M, Shinohara T. |
| タイトル | Abnormal DNA methyltransferase expression in mouse germline stem cells results in spermatogenic defects. |
| ジャーナル | Biol Reprod |
| Abstract |
Although spermatogonial stem cells (SSCs) are committed to spermatogenesis, they may also convert to an embryonic stem cell-like pluripotent state at a low frequency. Because changes in DNA methylation patterns are associated with this conversion, we examined the effect of manipulating DNA methyltransferase (Dnmt) expression on the fate of cultured SSCs, germline stem (GS) cells. Dnmt1 knockdown induced apoptosis in GS cells, which was attenuated by the loss of Trp53. In contrast, GS cells proliferated normally in vitro after Dnmt3a/Dnmt3b ablation or during Dnmt3l overexpression. However, Dnmt3a/Dnmt3b double-mutant cells showed hypomethylation in the SineB1 repetitive sequence, and Dnmt3l-overexpressing cells showed hypermethylation in major and minor satellite sequences; neither cell type formed teratomas and completed spermatogenesis following transplantation into the seminiferous tubules. Although genetic manipulation did not increase the conversion of GS cells to a pluripotent state, these results underscore the important role of DNMTs in survival and spermatogenic differentiation in SSCs. |
| 巻・号 | 81(1) |
| ページ | 155-64 |
| 公開日 | 2009-7-1 |
| DOI | 10.1095/biolreprod.108.074708 |
| PII | biolreprod.108.074708 |
| PMID | 19228594 |
| MeSH | Animals Apoptosis / genetics Cells, Cultured DNA (Cytosine-5-)-Methyltransferases / genetics* DNA (Cytosine-5-)-Methyltransferases / metabolism Gene Expression Regulation, Enzymologic Germ Cells / enzymology Germ Cells / metabolism* Infertility, Male / genetics Male Mice Mice, Knockout Spermatogenesis / genetics* Spermatozoa / abnormalities Spermatozoa / enzymology Spermatozoa / metabolism Stem Cells / enzymology Stem Cells / metabolism* Stem Cells / physiology |
| IF | 3.322 |
| 引用数 | 48 |
| WOS 分野 | REPRODUCTIVE BIOLOGY |
| オルトメトリクス指標 |
オルトメトリクス指標項目
|
| 最多言及媒体 | Patent(IFI CLAIMS) |
| 各媒体での言及数の合計 | 1 |
| 過去6か月間でのオルトメトリクス指標の変動値 | 0.0 |
| リソース情報 | |
| 遺伝子材料 | AxCANCre (RDB01748) |