PMID- 34511969 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220426 IS - 1178-7031 (Print) IS - 1178-7031 (Electronic) IS - 1178-7031 (Linking) VI - 14 DP - 2021 TI - Overexpression of Lin28a Aggravates Psoriasis-Like Phenotype by Regulating the Proliferation and Differentiation of Keratinocytes. PG - 4299-4312 LID - 10.2147/JIR.S312963 [doi] AB - PURPOSE: Psoriasis is a common and well-studied autoimmune skin disease, which is characterized by plaques. The formation of psoriasis plaques occurs through the hyperproliferation and abnormal differentiation of keratinocytes, infiltration of numerous immune cells into the dermis, increased subepidermal angiogenesis, and various autoimmune-associated cytokines and chemokines. According to previous research, Lin28 regulates the let-7 family, and let-7b is associated with psoriasis. However, the link between Lin28 and psoriasis is unclear. In this study, an association was identified between Lin28a and psoriasis progression, which promoted the pathological characteristic of psoriasis in epidermal keratinocytes. PATIENTS AND METHODS: This study aims to investigate the role of Lin28a and its underlying mechanism in psoriasis through in vivo and in vitro models, which include the Lin28a-overexpressing transgenic (TG) mice and Lin28a-overexpressing human keratinocyte (HaCaT) cell lines, respectively. RESULTS: In vivo and in vitro results revealed that overexpression of Lin28a downregulated microRNA let-7 expression levels and caused hyperproliferation and abnormal differentiation in keratinocytes. In imiquimod (IMQ)-induced psoriasis-like inflammation, Lin28a overexpressing transgenic (TG) mice exhibited more severe symptoms of psoriasis. CONCLUSION: Mechanistically, Lin28a exacerbated psoriasis-like inflammation through the activation of the extracellular-signal-regulated kinase (ERK) and signal transducer and activator of transcription 3 signaling (STAT 3) by targeting proinflammatory cytokine interleukin-6 (IL-6). CI - (c) 2021 Jang et al. FAU - Jang, Soyeon AU - Jang S AD - School of Life Sciences, BK21 FOUR KNU Creative BioResearch Group, Kyungpook National University, Daegu, Korea. FAU - Jang, Soyoung AU - Jang S AD - School of Life Sciences, BK21 FOUR KNU Creative BioResearch Group, Kyungpook National University, Daegu, Korea. FAU - Kim, Si-Yong AU - Kim SY AD - School of Life Sciences, BK21 FOUR KNU Creative BioResearch Group, Kyungpook National University, Daegu, Korea. FAU - Ko, Jiwon AU - Ko J AD - School of Life Sciences, BK21 FOUR KNU Creative BioResearch Group, Kyungpook National University, Daegu, Korea. FAU - Kim, Eungyung AU - Kim E AD - Department of Animal Science and Biotechnology, Kyungpook National University, Daegu, Korea. FAU - Park, Ji Yeong AU - Park JY AD - School of Life Sciences, BK21 FOUR KNU Creative BioResearch Group, Kyungpook National University, Daegu, Korea. FAU - Hyung, Hyejin AU - Hyung H AD - School of Life Sciences, BK21 FOUR KNU Creative BioResearch Group, Kyungpook National University, Daegu, Korea. FAU - Lee, Jin Hong AU - Lee JH AD - School of Life Sciences, BK21 FOUR KNU Creative BioResearch Group, Kyungpook National University, Daegu, Korea. FAU - Lim, Su-Geun AU - Lim SG AD - School of Life Science, Kyungpook National University, Daegu, Korea. FAU - Park, Sijun AU - Park S AUID- ORCID: 0000-0002-8791-8249 AD - School of Life Science, Kyungpook National University, Daegu, Korea. FAU - Yi, Junkoo AU - Yi J AD - Gyeongsangbukdo Livestock Research Institute, Yeongju, Korea. FAU - Lee, Heon-Jin AU - Lee HJ AUID- ORCID: 0000-0002-1911-5014 AD - Department of Microbiology and Immunology, School of Dentistry, Kyungpook National University, Daegu, 41940, Korea. FAU - Kim, Myoung Ok AU - Kim MO AD - Department of Animal Science and Biotechnology, Kyungpook National University, Daegu, Korea. FAU - Lee, Hyun-Shik AU - Lee HS AD - School of Life Sciences, BK21 FOUR KNU Creative BioResearch Group, Kyungpook National University, Daegu, Korea. FAU - Ryoo, Zae Young AU - Ryoo ZY AUID- ORCID: 0000-0001-6993-3624 AD - School of Life Sciences, BK21 FOUR KNU Creative BioResearch Group, Kyungpook National University, Daegu, Korea. LA - eng PT - Journal Article DEP - 20210830 PL - New Zealand TA - J Inflamm Res JT - Journal of inflammation research JID - 101512684 EIN - J Inflamm Res. 2021 Oct 22;14:5473-5474. PMID: 34712058 PMC - PMC8415766 OTO - NOTNLM OT - Lin28a OT - keratinocyte OT - let-7 OT - psoriasis COIS- The authors report no conflicts of interest in this work. EDAT- 2021/09/14 06:00 MHDA- 2021/09/14 06:01 PMCR- 2021/08/30 CRDT- 2021/09/13 06:37 PHST- 2021/03/29 00:00 [received] PHST- 2021/08/06 00:00 [accepted] PHST- 2021/09/13 06:37 [entrez] PHST- 2021/09/14 06:00 [pubmed] PHST- 2021/09/14 06:01 [medline] PHST- 2021/08/30 00:00 [pmc-release] AID - 312963 [pii] AID - 10.2147/JIR.S312963 [doi] PST - epublish SO - J Inflamm Res. 2021 Aug 30;14:4299-4312. doi: 10.2147/JIR.S312963. eCollection 2021.