在老化的人类卵巢中与衰老相关的纤维化,由基于p16的组织学概况和空间转录学揭示
bioRxiv : the preprint server for biology
|December 19, 2025
概括
细胞衰老驱动卵巢衰老. 研究人员绘制了绝经后卵巢中的衰老细胞图,揭示了促进炎症和组织重塑的与年龄相关的集群,这表明了新的治疗点.
科学领域:
- 生殖生物学 生殖生物学
- 细胞衰老 细胞衰老
- 卵巢生理学 卵巢生理学
背景情况:
- 细胞衰老是卵巢衰老的一个关键因素.
- 人类绝经后卵巢内的衰老细胞尚未得到充分理解.
- 识别和表征这些细胞对于理解卵巢衰老至关重要.
研究的目的:
- 在绝经后的人类卵巢中识别和绘制衰老细胞及其微环境.
- 描述衰老卵巢的分子和结构特征.
- 探索衰老在卵巢衰老中的作用,并确定潜在的治疗点.
主要方法:
- 通过免疫组织化学利用p16INK4a蛋白表达来检测衰老.
- 集成的多重复合免疫光学,空间转录学和人工智能引导的数字病理学.
- 分析了92个空间区域的全转录组概况和原基质结构.
主要成果:
- 鉴定并绘制了树皮,血管和囊相关区域的老化 (p16-阳性) 细胞的离散集群.
- 观察到随着年龄的增长,衰老的细胞群增加,富含巨细胞和肌纤维细胞样细胞.
- 发现与衰老区域相关的32基因特征 (BuckSenOvary),其特征是抑制细胞循环基因和激活的炎症/ECM重塑基因.
- 经确认的衰老区域表现出复杂的原基质,表明有纤维-炎症微环境.
结论:
- 衰老细胞在绝经后的卵巢中形成了不同的,与年龄相关的纤维炎性微环境.
- 已识别的BuckSenOvary签名为卵巢衰老提供了分子洞察力.
- 准这些衰老的卵巢位可能是保持卵巢功能的一种策略.
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