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Functional Analysis of Sheep POU2F3 Isoforms.


ABSTRACT: POU domain class 2 transcription factor 3 (POU2F3) plays an important role in keratinocyte proliferation and differentiation. Our previous study identified four sheep POU2F3 transcript variants (POU2F3-1, POU2F3-2, POU2F3-3, and POU2F3-4), encoding three POU2F3 protein isoforms (POU2F3-1, POU2F3-2, and POU2F3-3). However, the functional differences among the three POU2F3 isoforms remain unknown. The objective of this study was to determine the tissue expression pattern of the four POU2F3 transcript variants in sheep and to investigate the functional differences in cell proliferation among the three POU2F3 isoforms. Quantitative RT-PCR analysis showed that the four POU2F3 transcripts were ubiquitously expressed in all tested adult sheep tissues, and POU2F3-1 exhibited higher expression level than the other three POU2F3 transcript variants in skin (P??0.05). Dual luciferase reporter assays demonstrated that overexpression of any one of the three POU2F3 isoforms significantly inhibited the promoter activities of keratin 14 (KRT14) and matrix metalloproteinase 19 (MMP19) genes (P??0.05). These results suggest three sheep POU2F3 isoforms have similar functional effects, but to a different extent.

SUBMITTER: Ma GW 

PROVIDER: S-EPMC7113193 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature

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Functional Analysis of Sheep POU2F3 Isoforms.

Ma Guang-Wei GW   Chu Yan-Kai YK   Yang Hua H   Yan Xiao-Hong XH   Rong En-Guang EG   Li Hui H   Wang Ning N  

Biochemical genetics 20191231 2


POU domain class 2 transcription factor 3 (POU2F3) plays an important role in keratinocyte proliferation and differentiation. Our previous study identified four sheep POU2F3 transcript variants (POU2F3-1, POU2F3-2, POU2F3-3, and POU2F3-4), encoding three POU2F3 protein isoforms (POU2F3-1, POU2F3-2, and POU2F3-3). However, the functional differences among the three POU2F3 isoforms remain unknown. The objective of this study was to determine the tissue expression pattern of the four POU2F3 transcr  ...[more]

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