Ten-Eleven Translocation Proteins Modulate the Response to Environmental Stress in Mice

Cell Rep. 2018 Dec 11;25(11):3194-3203.e4. doi: 10.1016/j.celrep.2018.11.061.

Abstract

5-hydroxymethylcytosine (5hmC) is enriched in brain and has been recognized as an important DNA modification. However, the roles of 5hmC and its writers, ten-eleven translocation (Tet) proteins, in stress-induced response have yet to be elucidated. Here, we show that chronic restraint stress (CRS) induced depression-like behavior in mice and resulted in a 5hmC reduction in prefrontal cortex (PFC). We found that loss of Tet1 (Tet1 KO) led to resistance to CRS, whereas loss of Tet2 (Tet2 KO) increased the susceptibility of mice to CRS. Genome-wide 5hmC profiling identified the phenotype-associated stress-induced dynamically hydroxymethylated loci (PA-SI-DhMLs), which are strongly enriched with hypoxia-induced factor (HIF) binding motifs. We demonstrated the physical interaction between TET1 and HIF1α induced by CRS and revealed that the increased HIF1α binding under CRS is associated with SI-DhMLs. These results suggest that TET1 could regulate stress-induced response by interacting with HIF1α.

Keywords: 5-hydroxymethylcytosine; Tet protein; depression; prefrontal cortex; stress.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • 5-Methylcytosine / analogs & derivatives
  • Animals
  • DNA Methylation / genetics
  • DNA-Binding Proteins / deficiency
  • DNA-Binding Proteins / genetics
  • DNA-Binding Proteins / metabolism*
  • Environment*
  • Gene Expression Regulation
  • Hypoxia-Inducible Factor 1, alpha Subunit / metabolism
  • Male
  • Mice, Inbred C57BL
  • Mice, Knockout
  • Phenotype
  • Prefrontal Cortex / metabolism
  • Protein Binding
  • Proto-Oncogene Proteins / deficiency
  • Proto-Oncogene Proteins / genetics
  • Proto-Oncogene Proteins / metabolism*
  • Restraint, Physical
  • Stress, Physiological*

Substances

  • DNA-Binding Proteins
  • Hif1a protein, mouse
  • Hypoxia-Inducible Factor 1, alpha Subunit
  • Proto-Oncogene Proteins
  • TET1 protein, mouse
  • Tet2 protein, mouse
  • 5-hydroxymethylcytosine
  • 5-Methylcytosine