The Hair Follicle as a Dynamic Miniorgan

Marlon R. Schneider, Ruth Schmidt-Ullrich, Ralf Paus

    Research output: Contribution to journalArticlepeer-review


    Hair is a primary characteristic of mammals, and exerts a wide range of functions including thermoregulation, physical protection, sensory activity, and social interactions. The hair shaft consists of terminally differentiated keratinocytes that are produced by the hair follicle. Hair follicle development takes place during fetal skin development and relies on tightly regulated ectodermal-mesodermal interactions. After birth, mature and actively growing hair follicles eventually become anchored in the subcutis, and periodically regenerate by spontaneously undergoing repetitive cycles of growth (anagen), apoptosis-driven regression (catagen), and relative quiescence (telogen). Our molecular understanding of hair follicle biology relies heavily on mouse mutants with abnormalities in hair structure, growth, and/or pigmentation. These mice have allowed novel insights into important general molecular and cellular processes beyond skin and hair biology, ranging from organ induction, morphogenesis and regeneration, to pigment and stem cell biology, cell proliferation, migration and apoptosis. In this review, we present basic concepts of hair follicle biology and summarize important recent advances in the field. © 2009 Elsevier Ltd. All rights reserved.
    Original languageEnglish
    Pages (from-to)R132-R142
    JournalCurrent Biology
    Issue number3
    Publication statusPublished - 10 Feb 2009


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