Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Maintenance of distinct melanocyte populations in the interfollicular epidermis
AU - Glover, James D.
AU - Knolle, Stefan
AU - Wells, Kirsty L.
AU - Liu, Dianbo
AU - Jackson, Ian J.
AU - Mort, Richard L.
AU - Headon, Denis J.
N1 - © 2015 The Authors. Pigment Cell & Melanoma Research Published by John Wiley & Sons Ltd.
PY - 2015/7
Y1 - 2015/7
N2 - Hair follicles and sweat glands are recognized as reservoirs of melanocyte stem cells (MSCs). Unlike differentiated melanocytes, undifferentiated MSCs do not produce melanin. They serve as a source of differentiated melanocytes for the hair follicle and contribute to the interfollicular epidermis upon wounding, exposure to ultraviolet irradiation or in remission from vitiligo, where repigmentation often spreads outwards from the hair follicles. It is unknown whether these observations reflect the normal homoeostatic mechanism of melanocyte renewal or whether unperturbed interfollicular epidermis can maintain a melanocyte population that is independent of the skin's appendages. Here, we show that mouse tail skin lacking appendages does maintain a stable melanocyte number, including a low frequency of amelanotic melanocytes, into adult life. Furthermore, we show that actively cycling differentiated melanocytes are present in postnatal skin, indicating that amelanotic melanocytes are not uniquely relied on for melanocyte homoeostasis.
AB - Hair follicles and sweat glands are recognized as reservoirs of melanocyte stem cells (MSCs). Unlike differentiated melanocytes, undifferentiated MSCs do not produce melanin. They serve as a source of differentiated melanocytes for the hair follicle and contribute to the interfollicular epidermis upon wounding, exposure to ultraviolet irradiation or in remission from vitiligo, where repigmentation often spreads outwards from the hair follicles. It is unknown whether these observations reflect the normal homoeostatic mechanism of melanocyte renewal or whether unperturbed interfollicular epidermis can maintain a melanocyte population that is independent of the skin's appendages. Here, we show that mouse tail skin lacking appendages does maintain a stable melanocyte number, including a low frequency of amelanotic melanocytes, into adult life. Furthermore, we show that actively cycling differentiated melanocytes are present in postnatal skin, indicating that amelanotic melanocytes are not uniquely relied on for melanocyte homoeostasis.
KW - Animals
KW - Cell Division
KW - Epidermis
KW - Hair Follicle
KW - Humans
KW - Melanins
KW - Melanocytes
KW - Mice
KW - Journal Article
KW - Research Support, Non-U.S. Gov't
U2 - 10.1111/pcmr.12375
DO - 10.1111/pcmr.12375
M3 - Journal article
C2 - 25847135
VL - 28
SP - 476
EP - 480
JO - Pigment Cell and Melanoma Research
JF - Pigment Cell and Melanoma Research
SN - 1755-1471
IS - 4
ER -