Open Access

Aberrant expression of the UPF1 RNA surveillance gene disturbs keratinocyte homeostasis by stabilizing AREG

  • Authors:
    • Yaojia Cheng
    • Qiuping Lu
    • Nannan Shi
    • Qiongyan Zhou
    • Jingjing Rong
    • Liyun Li
    • Li Wang
    • Chen Liu
  • View Affiliations

  • Published online on: February 5, 2020     https://doi.org/10.3892/ijmm.2020.4487
  • Pages: 1163-1175
  • Copyright: © Cheng et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

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.
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April-2020
Volume 45 Issue 4

Print ISSN: 1107-3756
Online ISSN:1791-244X

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Spandidos Publications style
Cheng Y, Lu Q, Shi N, Zhou Q, Rong J, Li L, Wang L and Liu C: Aberrant expression of the UPF1 RNA surveillance gene disturbs keratinocyte homeostasis by stabilizing AREG. Int J Mol Med 45: 1163-1175, 2020
APA
Cheng, Y., Lu, Q., Shi, N., Zhou, Q., Rong, J., Li, L. ... Liu, C. (2020). Aberrant expression of the UPF1 RNA surveillance gene disturbs keratinocyte homeostasis by stabilizing AREG. International Journal of Molecular Medicine, 45, 1163-1175. https://doi.org/10.3892/ijmm.2020.4487
MLA
Cheng, Y., Lu, Q., Shi, N., Zhou, Q., Rong, J., Li, L., Wang, L., Liu, C."Aberrant expression of the UPF1 RNA surveillance gene disturbs keratinocyte homeostasis by stabilizing AREG". International Journal of Molecular Medicine 45.4 (2020): 1163-1175.
Chicago
Cheng, Y., Lu, Q., Shi, N., Zhou, Q., Rong, J., Li, L., Wang, L., Liu, C."Aberrant expression of the UPF1 RNA surveillance gene disturbs keratinocyte homeostasis by stabilizing AREG". International Journal of Molecular Medicine 45, no. 4 (2020): 1163-1175. https://doi.org/10.3892/ijmm.2020.4487