MicroRNA-205 promotes hair regeneration by modulating mechanical properties of hair follicle stem cells
Abstrak
Stiffness and actomyosin contractility are intrinsic mechanical properties of animal cells required for the shaping of tissues. However, whether tissue stem cells (SCs) and progenitors located within SC niche have different mechanical properties that modulate their size and function remains unclear. Here, we show that hair follicle SCs in the bulge are stiff with high actomyosin contractility and resistant to size change, whereas hair germ (HG) progenitors are soft and periodically enlarge and contract during quiescence. During activation of hair follicle growth, HGs reduce contraction and more frequently enlarge, a process that is associated with weakening of the actomyosin network, nuclear YAP accumulation, and cell cycle reentry. Induction of miR-205 , a novel regulator of the actomyosin cytoskeleton, reduces actomyosin contractility and activates hair regeneration in young and old mice. This study reveals the control of tissue SC size and activities by spatiotemporally compartmentalized mechanical properties and demonstrates the possibility to stimulate tissue regeneration by fine-tuning cell mechanics.
Penulis (13)
Jingjing Wang
Yuheng Fu
Wenmao Huang
Ritusree Biswas
Avinanda Banerjee
Joshua A. Broussard
Zhihai Zhao
Dongmei Wang
Glen Bjerke
Srikala Raghavan
Jie Yan
Kathleen J. Green
Rui Yi
Akses Cepat
- Tahun Terbit
- 2023
- Bahasa
- en
- Total Sitasi
- 11×
- Sumber Database
- CrossRef
- DOI
- 10.1073/pnas.2220635120
- Akses
- Open Access ✓