• 제목/요약/키워드: Choi-cha

검색결과 2,285건 처리시간 0.041초

Functions of PIWI proteins in spermatogenesis

  • Bak, Chong-Won;Yoon, Tae-Ki;Choi, Young-Sok
    • Clinical and Experimental Reproductive Medicine
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    • 제38권2호
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    • pp.61-67
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    • 2011
  • Recently, a significant understanding of the molecular mechanisms regulating spermatogenesis has been achieved utilizing small RNA molecules (small RNAs), including small interfering RNAs (siRNAs), microRNAs (miRNAs), and Piwi-interacting RNAs (piRNAs) which emerged as important regulators of gene expression at the post-transcriptional or translation level. piRNAs are only present in pachytene spermatocytes and round spermatids, whereas miRNAs are expressed abundantly in male germ cells throughout spermatogenesis. This review is aimed at providing a glimpse of piRNAs and their interacting family proteins such as PIWIL1, PIWIL2, and PIWIL4 in spermatogenesis.

Current status and prospects of organoid-based regenerative medicine

  • Woo Hee Choi;Dong Hyuck Bae;Jongman Yoo
    • BMB Reports
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    • 제56권1호
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    • pp.10-14
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    • 2023
  • Organoids derived from stem cells or organ-specific progenitors are self-organizable, self-renewable, and multicellular three-dimensional (3D) structures that can mimic the function and structure of the derived tissue. Due to such characteristics, organoids are attracting attention as an excellent ex vivo model for drug screening at the stage of drug development. In addition, since the applicability of organoids as therapeutics for tissue regeneration has been embossed, the development of various organoids-based regenerative medicine has been rapidly progressing, reaching the clinical trial stage. In this review, we give a general overview of organoids and describe current status and prospects of organoid-based regenerative medicine, focusing on organoid-based regenerative therapeutics currently under development including clinical trials.