TET2 is involved in DNA hydroxymethylation, cell proliferation and inflammatory response in keratinocytes.

Abstract:

:DNA methylation and hydroxymethylation are the most common epigenetic modifications associated with the cell cycle and the inflammatory response. The present study aimed to investigate the role of 5‑hydroxymethyl‑cytosine (5‑hmC) and ten‑eleven translocation‑2 (TET2) in keratinocytes. Following TET2 knockdown, dot blot analysis was performed to assess the levels of 5‑hmC in keratinocytes, using HaCaT cells. Subsequently, the viability and cell cycle of HaCaT cells were assessed by MTT, Cell Counting Kit‑8 assay and flow cytometric assays. Cyclin‑dependent kinase inhibitor 2A and proinflammatory cytokine protein and mRNA expression levels were also detected. The present results suggested that TET2 may play an important role in regulating cellular proliferation by mediating DNA hydroxymethylation in HaCaT cells. In addition, TET2 knockdown decreased the production of proinflammatory cytokines, including lipocalin 2, S100 calcium binding protein A7, matrix metallopeptidase 9, C‑X‑C motif chemokine ligand 1, interferon regulatory factor 7 and interleukin‑7 receptor. The present study suggested that TET2 regulated cell viability, apoptosis and the expression of inflammatory mediators in keratinocytes. Collectively, the results indicated that TET2 knockdown may relieve inflammatory responses in the skin.

journal_name

Mol Med Rep

authors

Liu X,Wang X,Liu N,Zhu K,Zhang S,Duan X,Huang Y,Jin Z,Jaypaul H,Wu Y,Chen H

doi

10.3892/mmr.2020.10989

subject

Has Abstract

pub_date

2020-04-01 00:00:00

pages

1941-1949

issue

4

eissn

1791-2997

issn

1791-3004

journal_volume

21

pub_type

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