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논문 기본 정보

자료유형
학술저널
저자정보
Yang Ge (Department of Clinical Laboratory, Zigong Maternity and Child Health Care Hospital) Zhang Bo (Stem Cell & Regenerative Medicine Center, Sichuan Neo-Life Stem Cell Biotech Inc) Xu Mei (Department of Clinical Laboratory, Zigong Maternity and Child Health Care Hospital) Wu MingJun (Stem Cell & Regenerative Medicine Center, Sichuan Neo-Life Stem Cell Biotech Inc) Lin Jie (Center for Reproductive Medicine, Zigong Maternity and Child Health Care Hospital) Luo ZiYu (Stem Cell & Regenerative Medicine Center, Sichuan Neo-Life Stem Cell Biotech Inc) Chen YueHua (Department of Clinical Laboratory, Zigong Maternity and Child Health Care Hospital) Hu Qin (Molecular Genetics Laboratory, Zigong Maternity and Child Health Care Hospital) Huang GuoPing (Molecular Genetics Laboratory, Zigong Maternity and Child Health Care Hospital) Hu HaiYan (Department of Pediatrics, Zigong Maternity and Child Health Care Hospital)
저널정보
한국조직공학과 재생의학회 조직공학과 재생의학 조직공학과 재생의학 제21권 제6호
발행연도
2024.8
수록면
897 - 914 (18page)
DOI
10.1007/s13770-024-00652-2

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Background: The therapeutic potential of exosomes from human umbilical cord mesenchymal stem cells (HUMSCs-Exo) for delivering specific circular RNAs (circRNAs) in treating premature ovarian failure (POF) is not well understood. This study aimed to explore the efficacy of HUMSCs-Exo in delivering hsa_circ_0002021 for POF treatment, focusing on its effects on granulosa cell (GC) senescence and ovarian function. Methods: Bioinformatic analysis was conducted on circRNA profiles using the GSE97193 dataset from GEO, targeting granulosa cells from varied age groups. To simulate granulosa cell senescence, KGN cells were treated with cyclophosphamide (CTX). HUMSCs were transfected with pcDNA 3.1 vectors to overexpress hsa_circ_0002021, and the HUMSCs-Exo secreted were isolated. These exosomes were characterized by transmission electron microscopy (TEM) and Western blotting to confirm exosomal markers CD9 and CD63. Co-culture of these exosomes with CTX-treated KGN cells was performed to assess β-galactosidase activity, oxidative stress markers, ROS levels, and apoptosis via flow cytometry. Interaction between hsa_circ_0002021, microRNA-125a-5p (miR-125a-5p), and cyclin-dependent kinase 6 (CDK6) was investigated using dual-luciferase assays and RNA immunoprecipitation (RIP). A POF mouse model was induced with CTX, treated with HUMSCs-Exo, and analyzed histologically and via immunofluorescence staining. Gene expression was quantified using RT-qPCR and Western blot. Results: hsa_circ_0002021 was under expressed in both in vivo and in vitro POF models and was effectively delivered by HUMSCs-Exo to KGN cells, showing a capability to reduce GC senescence. Overexpression of hsa_circ_0002021 in HUMSCs-Exo significantly enhanced these anti-senescence effects. This circRNA acts as a competitive adsorbent of miR-125a-5p, regulating CDK6 expression, which is crucial in modulating cell cycle and apoptosis. Enhanced expression of hsa_circ_0002021 in HUMSCs-Exo ameliorated GC senescence in vitro and improved ovarian function in POF models by modulating oxidative stress and cellular senescence markers. Conclusion: This study confirms that hsa_circ_0002021, when delivered through HUMSCs-Exo, can significantly mitigate GC senescence and restore ovarian function in POF models. These findings provide new insights into the molecular mechanisms of POF and highlight the therapeutic potential of circRNA-enriched exosomes in treating ovarian aging and dysfunction.

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