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- W2053834034 abstract "MicroRNAs (miRs) play a key role in the control of gene expression in a wide array of tissue systems, where their functions include the regulation of self-renewal, cellular differentiation, proliferation, and apoptosis. However, the functional importance of individual miRs in controlling spermatogonial stem cell (SSC) homeostasis has not been investigated. Using high-throughput sequencing, we profiled the expression of miRs in the Thy1(+) testis cell population, which is highly enriched for SSCs, and the Thy1(-) cell population, composed primarily of testis somatic cells. In addition, we profiled the global expression of miRs in cultured germ cells, also enriched for SSCs. Our results demonstrate that miR-21, along with miR-34c, -182, -183, and -146a, are preferentially expressed in the Thy1(+) SSC-enriched population, compared with Thy1(-) somatic cells. Importantly, we demonstrate that transient inhibition of miR-21 in SSC-enriched germ cell cultures increased the number of germ cells undergoing apoptosis and significantly reduced the number of donor-derived colonies of spermatogenesis formed from transplanted treated cells in recipient mouse testes, indicating that miR-21 is important in maintaining the SSC population. Moreover, we show that in SSC-enriched germ cell cultures, miR-21 is regulated by the transcription factor ETV5, known to be critical for SSC self-renewal." @default.
- W2053834034 created "2016-06-24" @default.
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- W2053834034 date "2011-07-18" @default.
- W2053834034 modified "2023-10-17" @default.
- W2053834034 title "MicroRNA-21 regulates the self-renewal of mouse spermatogonial stem cells" @default.
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- W2053834034 doi "https://doi.org/10.1073/pnas.1109987108" @default.
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