{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,3]],"date-time":"2026-08-03T14:38:45Z","timestamp":1785767925907,"version":"3.56.0"},"reference-count":40,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2023,11,22]],"date-time":"2023-11-22T00:00:00Z","timestamp":1700611200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100014188","name":"Ministry of Science and ICT, South Korea","doi-asserted-by":"publisher","award":["23C0125L1"],"award-info":[{"award-number":["23C0125L1"]}],"id":[{"id":"10.13039\/501100014188","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Cell Proliferation"],"published-print":{"date-parts":[[2024,3]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Adipose\u2010derived stem cells (ASCs) have shown efficacy in promoting hair growth, while DKK1 inhibits the WNT pathway, which is associated with hair loss. Our study focused on investigating the expression of DKK1 in alopecia areata (AA), a condition characterised by significant increases in the DKK1 levels in human and mouse ASCs. Treatment of interferon\u2010\u03b3 increased the expression of DKK1 via STAT3 phosphorylation in ASCs. Treatment with recombinant DKK1 resulted in a decrease of cell growth in outer root sheath cells, whereas the use of a DKK1 neutralising antibody promoted hair growth. These results indicate that ASCs secrete DKK1, playing a crucial role in the progression and development of AA. Consequently, we generated DKK1 knockout (KO) ASCs using the Crispr\/Cas9 system and evaluated their hair growth\u2010promoting effects in an AA model. The DKK1 KO in ASCs led to enhanced cell motility and reduced cellular senescence by activating the WNT signalling pathway, while it reduced the expression of inflammatory cytokines by inactivating the NF\u2010kB pathway. As expected, the intravenous injection of DKK1\u2010KO\u2010ASCs in AA mice, and the treatment with a conditioned medium derived from DKK1\u2010KO\u2010ASCs in hair organ culture proved to be more effective compared with the use of na\u00efve ASCs and their conditioned medium. Overall, these findings suggest that DKK1 represents a novel therapeutic target for treating AA, and cell therapy using DKK1\u2010KO\u2010ASCs demonstrates greater efficiency.<\/jats:p>","DOI":"10.1111\/cpr.13562","type":"journal-article","created":{"date-parts":[[2023,11,24]],"date-time":"2023-11-24T00:21:14Z","timestamp":1700785274000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":11,"title":["Involvement of <scp>DKK1<\/scp> secreted from adipose\u2010derived stem cells in alopecia areata"],"prefix":"10.1111","volume":"57","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8084-9017","authenticated-orcid":false,"given":"Nahyun","family":"Choi","sequence":"first","affiliation":[{"name":"Epi Biotech Co., Ltd.  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