Following up on prior work that identified the perineural microenvironment as a regulator of hair follicle stem cells, we have conducted further experiments investigating a perivascular niche for hair follicle stem cells. Moreover, we have identified that sensory touch domes and the Merkel cells housed there are also regulated by associated sensory neurons. We have continued experiments demonstrating that touch domes are a novel and distinct cell lineage within the skin maintained by their own stem cell population. We have also investigated the developmental requirements for Merkel cell formation in skin.

National Institute of Health (NIH)
National Cancer Institute (NCI)
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National Cancer Institute Division of Basic Sciences
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Xiao, Ying; Thoresen, Daniel T; Miao, Lingling et al. (2016) A Cascade of Wnt, Eda, and Shh Signaling Is Essential for Touch Dome Merkel Cell Development. PLoS Genet 12:e1006150
Peterson, Shelby C; Brownell, Isaac; Wong, Sunny Y (2016) Cutaneous Surgical Denervation: A Method for Testing the Requirement for Nerves in Mouse Models of Skin Disease. J Vis Exp :
Xiao, Ying; Thoresen, Daniel T; Williams, Jonathan S et al. (2015) Neural Hedgehog signaling maintains stem cell renewal in the sensory touch dome epithelium. Proc Natl Acad Sci U S A 112:7195-200
Williams, Jonathan S; Xiao, Ying; Brownell, Isaac (2014) Low pH reprograms somatic murine cells into pluripotent stem cells: a novel technique with therapeutic implications. Cancer Biol Ther 15:675-7
Xiao, Ying; Williams, Jonathan S; Brownell, Isaac (2014) Merkel cells and touch domes: more than mechanosensory functions? Exp Dermatol 23:692-5
Xiao, Ying; Woo, Wei-Meng; Nagao, Keisuke et al. (2013) Perivascular hair follicle stem cells associate with a venule annulus. J Invest Dermatol 133:2324-2331
Brownell, Isaac; Guevara, Elizabeth; Bai, C Brian et al. (2011) Nerve-derived sonic hedgehog defines a niche for hair follicle stem cells capable of becoming epidermal stem cells. Cell Stem Cell 8:552-65