chronic wound failure programs clarify which senescence states are pathological
fact lesson principle evidence-chain aging reprogramming
chronic wound failure programs clarify which senescence states are pathological
''结论'': 在慢性创面(尤其 DFU)里,公开证据支持两类可操作的失败程序:
# ''failed keratinocyte migration / re-epithelialization'':单细胞+空间研究显示,慢性创面与角质形成细胞迁移失败、炎症响应受损相关;
# ''persistent senescence-driven fibroblast dysfunction'':DFU 中可见 senescent fibroblasts 的增殖/ECM 分泌能力下降,伴持续炎症,阻碍闭合。
''教训'':
# 慢性不愈合不能只看“有没有 senescence”,要区分 ''短暂、阶段性、促修复'' 与 ''持续、病理性、迁移/ECM 失败'' 两种状态;
# 对照急性修复时,最有信息量的不是总量 senescence,而是 ''keratinocyte migration''、''fibroblast ECM output''、''macrophage inflammatory state'' 这类阶段-细胞程序。
''可复用检索锚点'':
* Single cell transcriptomic landscape of diabetic foot ulcers
* Spatiotemporal single-cell roadmap of human skin wound healing
* PDK4 rescues high-glucose-induced senescent fibroblasts and promotes diabetic wound healing