PMID- 32124941 OWN - NLM STAT- MEDLINE DCOM- 20201130 LR - 20201130 IS - 1791-244X (Electronic) IS - 1107-3756 (Print) IS - 1107-3756 (Linking) VI - 45 IP - 4 DP - 2020 Apr TI - Aberrant expression of the UPF1 RNA surveillance gene disturbs keratinocyte homeostasis by stabilizing AREG. PG - 1163-1175 LID - 10.3892/ijmm.2020.4487 [doi] AB - The up‑frameshift suppressor 1 homolog (UPF1) RNA surveillance gene is a core element in the nonsense‑mediated RNA decay (NMD) pathway, which impacts a broad spectrum of biological processes in a cell‑specific manner. In the present study, the contribution of the NMD pathway to psoriasis lesions and its moderating effects on the biological processes of keratinocytes was reported. Sanger sequencing for skin scales from two patients with psoriasis identified two mRNA mutations (c.2935_2936insA and c.2030‑2081del) in the UPF1 gene. The somatic mutants produced truncated UPF1 proteins and perturbed the NMD pathway in cells, leading to the upregulation of NMD substrates. As the most abundant epidermal growth factor receptor ligand in keratinocytes, it was concluded that amphiregulin (AREG) mRNA is a natural NMD substrate, that is dependent on its 3' untranslated region sequence. Perturbed NMD modulated keratinocyte homeostasis in an AREG‑dependent but nonidentical manner, which highlighted the unique characteristics of NMD in keratinocytes. By targeting AREG mRNA post‑transcriptionally, the UPF1‑NMD pathway contributed to an imbalance between proliferation on the one hand, and apoptosis and abnormal differentiation, migration and inflammatory response on the other, in keratinocytes, which indicated a role of the NMD pathway in the full development of keratinocyte‑related morbidity and skin diseases. FAU - Yaojia Cheng, Yaojia X AU - Yaojia Cheng YX AD - Institute of Aging Research, School of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang 311121, P.R. China. FAU - Lu, Qiuping AU - Lu Q AD - Institute of Aging Research, School of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang 311121, P.R. China. FAU - Shi, Nannan AU - Shi N AD - Institute of Aging Research, School of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang 311121, P.R. China. FAU - Zhou, Qiongyan AU - Zhou Q AD - Department of Dermatology, Affiliated Hospital, Ningbo University, Ningbo, Zhejiang 315211, P.R. China. FAU - Rong, Jingjing AU - Rong J AD - Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, P.R. China. FAU - Li, Liyun AU - Li L AD - Information Centre, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China. FAU - Wang, Li AU - Wang L AD - Institute of Aging Research, School of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang 311121, P.R. China. FAU - Liu, Chen AU - Liu C AD - Institute of Aging Research, School of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang 311121, P.R. China. LA - eng PT - Journal Article DEP - 20200205 PL - Greece TA - Int J Mol Med JT - International journal of molecular medicine JID - 9810955 RN - 0 (AREG protein, human) RN - 0 (Amphiregulin) RN - 0 (Areg protein, mouse) RN - 0 (Rent1 protein, mouse) RN - 0 (Trans-Activators) RN - EC 3.6.4.13 (RNA Helicases) RN - EC 3.6.4.13 (UPF1 protein, human) SB - IM MH - Amphiregulin/genetics/*metabolism MH - Animals MH - Disease Models, Animal MH - Female MH - Humans MH - Keratinocytes/*metabolism/pathology MH - Male MH - Mice MH - *Nonsense Mediated mRNA Decay MH - Protein Stability MH - Psoriasis/genetics/*metabolism/pathology MH - RNA Helicases/genetics/*metabolism MH - *Signal Transduction MH - Trans-Activators/*biosynthesis/genetics/*metabolism PMC - PMC7053862 EDAT- 2020/03/04 06:00 MHDA- 2020/12/01 06:00 PMCR- 2020/02/05 CRDT- 2020/03/04 06:00 PHST- 2019/06/14 00:00 [received] PHST- 2020/01/22 00:00 [accepted] PHST- 2020/03/04 06:00 [pubmed] PHST- 2020/12/01 06:00 [medline] PHST- 2020/03/04 06:00 [entrez] PHST- 2020/02/05 00:00 [pmc-release] AID - ijmm-45-04-1163 [pii] AID - 10.3892/ijmm.2020.4487 [doi] PST - ppublish SO - Int J Mol Med. 2020 Apr;45(4):1163-1175. doi: 10.3892/ijmm.2020.4487. Epub 2020 Feb 5.