Effect of Dickkopf1 on the senescence of melanocytes: in vitro study.
Fibroblasts secrete several growth factors which are important for the regulation of skin pigmentation. Dickkopf1 (DKK1) is also secreted by fibroblasts which inhibit the growth and function of melanocytes. Therefore, the study was designed to check the role of DKK1 in vitiligo pathogenesis. This study confirmed the higher expression of DKK1 in lesional skin of vitiligo patients. In vitro effect of DKK1 on cultured melanocytes revealed decrease in the melanocytes proliferation and pigmentation. In vitro effect of DKK1 was then checked on the melanocytes senescence and found that DKK1 induced senescence in the treated melanocytes. Expression of senescence markers was significantly higher in DKK1 treated melanocytes. This study suggests that higher expression of DKK1 in the dermis induced senescence in melanocytes that may lead to hypopigmentation and play role in vitiligo pathogenesis.
['Rani|Seema|S|', 'Chauhan|Rakhee|R|', 'Parsad|Davinder|D|', 'Kumar|Ravinder|R|']
D000328:Adult D049109:Cell Proliferation D002478:Cells, Cultured D016922:Cellular Senescence D020405:Dermis D005260:Female D005347:Fibroblasts D006801:Humans D036341:Intercellular Signaling Peptides and Proteins D008297:Male D008544:Melanocytes D008875:Middle Aged D012880:Skin Pigmentation D014820:Vitiligo D055815:Young Adult
Melanocytes DKK1 Vitiligo Dermis