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Unlike acute radiation dermatitis, FICRD is different as delayed onset and usually appears without preexisting acute dermatitis. Unfortunately, the chronic and progressive pathology of FICRD makes it difficult to treat, and some patients need to receive wide excision and reconstruction surgery. Due to lack of standard treatment, investigating underlying mechanism is needed in order to develop an effective therapy. Herein, the Hippo pathway is specifically identified using an RNA-seq analysis in mild damaged skin specimens of patients with FICRD. Furthermore, specific increase of the Yes-associated protein (YAP1), an effector of the Hippo pathway, in skin region with mild damage plays a protective role for keratinocytes via positively regulating the numerous downstream genes involved in different biological processes. Interestingly, irradiated-keratinocytes inhibit activation of fibroblasts under TGF-\u03b21 treatment via remote control by an exosome containing YAP1. More importantly, targeting one of YAP1 downstream genes, nuclear receptor subfamily 3 group C member 1 (NR3C1), which encodes glucocorticoid receptor, has revealed its therapeutic potential to treat FICRD by inhibiting fibroblasts activation in vitro and preventing formation of radiation ulcers in a mouse model and in patients with FICRD. Taken together, this translational research demonstrates the critical role of YAP1 in FICRD and identification of a feasible, effective therapy for patients with FICRD.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Key messages<\/jats:title>\n                <jats:p>\u2022 YAP1\u00a0overexpression in skin specimens of radiation dermatitis from FICRD patient.<\/jats:p>\n                <jats:p>\u2022 Radiation-induced YAP1 expression plays protective roles by promoting DNA damage repair and inhibiting fibrosis via remote control of exosomal YAP1.<\/jats:p>\n                <jats:p>\u2022 YAP1 positively regulates NR3C1 which encodes glucocorticoid receptor expression.<\/jats:p>\n                <jats:p>\u2022 Targeting glucocorticoid receptor by prednisolone has therapeutic potential for FICRD patient.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1007\/s00109-021-02146-3","type":"journal-article","created":{"date-parts":[[2021,10,23]],"date-time":"2021-10-23T20:02:56Z","timestamp":1635019376000},"page":"135-146","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["An innovative targeted therapy for fluoroscopy-induced chronic radiation dermatitis"],"prefix":"10.1007","volume":"100","author":[{"given":"Kai-Che","family":"Wei","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shih-Fan","family":"Lai","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wei-Lun","family":"Huang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kuo-Chung","family":"Yang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ping-Chin","family":"Lai","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wan-Ju","family":"Wei","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tsung-Hsien","family":"Chang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yun-Chen","family":"Huang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ya-Chuan","family":"Tsai","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shin-Chih","family":"Lin","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sun-Jang","family":"Lin","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9967-5037","authenticated-orcid":false,"given":"Shih-Chieh","family":"Lin","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2021,10,23]]},"reference":[{"key":"2146_CR1","doi-asserted-by":"publisher","first-page":"985","DOI":"10.1038\/jid.2011.411","volume":"132","author":"JL Ryan","year":"2012","unstructured":"Ryan JL (2012) Ionizing radiation: the good, the bad, and the ugly. 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