[SUMO-2/3 can covalently bind to progesterone receptor B to regulate its transcriptional activity]

Nan Fang Yi Ke Da Xue Xue Bao. 2011 Sep;31(9):1493-7.
[Article in Chinese]

Abstract

Objective: To investigate whether progesterone receptor B (PRB) can be sumoylated by SUMO-2/3 and the effect of sumoylation on PRB transcriptional activity.

Methods: SUMO-2/3 cDNA was amplified from MCF-7 cDNA and cloned into the eukaryotic expression vector pcDNA3-FLAG. The plasmid pXJ40-myc-PRB was cotransfected with pcDNA3FLAG-SUMO2, pcDNA3FLAG-SUMO3 or the mock control into 293T cells, and PRB sumoylation was detected by immunoprecipitation and Western blotting. The effect of PRB sumoylation on its transcriptional activity was determined using reporter luciferase assay.

Results: pcDNA3FLAG-SUMO2 and pcDNA3FLAG-SUMO3 vectors were successfully constructed. SUMO-2/3 could bind covalently to PRB and increase its transcriptional dependent on the presence of progesterone.

Conclusion: PRB can be sumoylated by SUMO-2/3 and its function is regulated by this modification.

Publication types

  • English Abstract
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Cell Line
  • Humans
  • Plasmids / genetics
  • Receptors, Progesterone / genetics*
  • Receptors, Progesterone / metabolism
  • Small Ubiquitin-Related Modifier Proteins / genetics*
  • Small Ubiquitin-Related Modifier Proteins / metabolism
  • Transcription, Genetic
  • Transfection
  • Ubiquitination
  • Ubiquitins / genetics*
  • Ubiquitins / metabolism

Substances

  • Receptors, Progesterone
  • SUMO2 protein, human
  • SUMO3 protein, human
  • Small Ubiquitin-Related Modifier Proteins
  • Ubiquitins
  • progesterone receptor B