دورية أكاديمية
An important role of cutaneous lymphatic vessels in coordinating and promoting anagen hair follicle growth.
| العنوان: | An important role of cutaneous lymphatic vessels in coordinating and promoting anagen hair follicle growth. |
|---|---|
| المؤلفون: | Yoon, Sun-Young1,2, Dieterich, Lothar C.1, Karaman, Sinem1, Proulx, Steven T.1, Bachmann, Samia B.1, Sciaroni, Carol1, Detmar, Michael1 michael.detmar@pharma.ethz.ch |
| المصدر: | PLoS ONE. 7/25/2019, Vol. 14 Issue 7, p1-16. 16p. |
| مصطلحات موضوعية: | *HAIR growth, *HAIR follicles, *CARDIOVASCULAR system, *INTRADERMAL injections, *TRANSGENIC mice, *CYTOLOGY, *ENDOTHELIAL cells |
| مستخلص: | The lymphatic vascular system plays important roles in the control of tissue fluid homeostasis and immune responses. While VEGF-A-induced angiogenesis promotes hair follicle (HF) growth, the potential role of lymphatic vessels (LVs) in HF cycling has remained unknown. In this study, we found that LVs are localized in close proximity to the HF bulge area throughout the postnatal and depilation-induced hair cycle in mice and that a network of LVs directly connects the individual HFs. Increased LV density in the skin of K14-VEGF-C transgenic mice was associated with prolongation of anagen HF growth. Conversely, HF entry into the catagen phase was accelerated in K14-sVEGFR3 transgenic mice that lack cutaneous LVs. Importantly, repeated intradermal injections of VEGF-C promoted hair growth in mice. Conditioned media from lymphatic endothelial cells promoted human dermal papilla cell (DPC) growth and expression of IGF-1 and alkaline phosphatase, both activators of DPCs. Our results reveal an unexpected role of LVs in coordinating and promoting HF growth and identify potential new therapeutic strategies for hair loss-associated conditions. [ABSTRACT FROM AUTHOR] |
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