Novel functions of protein arginine methyltransferase 1 in thyroid hormone receptor-mediated transcription and in the regulation of metamorphic rate in Xenopus laevis

Hiroki Matsuda, Bindu Paul, Cheol Young Choi, Takashi Hasebe, Yun Bo Shi

Research output: Contribution to journalArticle

Abstract

Protein arginine methyltransferase 1 (PRMT1) acts as a transcription coactivator for nuclear receptors through histone H4 R3 methylation. The in vivo function of PRMT1 is largely unknown. Here we investigated the role of PRMT1 in thyroid hormone (T3) receptor (TR)-mediated transcription in vivo during vertebrate development. By using intestinal remodeling during T3-dependent Xenopus laevis metamorphosis for in vivo molecular analysis, we first showed that PRMT1 expression was upregulated during metamorphosis when both TR and T3 were present. We then demonstrated a role for PRMT1 in TR-mediated transcription by showing that PRMT1 enhanced transcriptional activation by liganded TR in the frog oocyte transcription system and was recruited to the T3 response element (TRE) of the target promoter in the oocyte, as well as to endogenous TREs during frog metamorphosis. Surprisingly, we found that PRMT1 was only transiently recruited to the TREs in the target during metamorphosis and observed no PRMT1 recruitment to TREs at the climax of intestinal remodeling when both PRMT1 and T3 were at peak levels. Mechanistically, we showed that over- expression of PRMT1 enhanced TR binding to TREs both in the frog oocyte model system and during metamorphosis. More importantly, transgenic overexpression of PRMT1 enhanced gene activation in vivo and accelerated both natural and T3-induced metamorphosis. These results thus indicate that PRMT1 functions transiently as a coactivator in TR-mediated transcription by enhancing TR-TRE binding and further suggest that PRMT1 has tissue-specific roles in regulating the rate of metamorphosis.

Original languageEnglish (US)
Pages (from-to)745-757
Number of pages13
JournalMolecular and Cellular Biology
Volume29
Issue number3
DOIs
StatePublished - Feb 2009

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Protein-Arginine N-Methyltransferases
Thyroid Hormone Receptors
Xenopus laevis
Anura
Oocytes
Response Elements
Transcriptional Activation
Nuclear Receptor Coactivators

ASJC Scopus subject areas

  • Molecular Biology
  • Cell Biology

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Novel functions of protein arginine methyltransferase 1 in thyroid hormone receptor-mediated transcription and in the regulation of metamorphic rate in Xenopus laevis. / Matsuda, Hiroki; Paul, Bindu; Choi, Cheol Young; Hasebe, Takashi; Shi, Yun Bo.

In: Molecular and Cellular Biology, Vol. 29, No. 3, 02.2009, p. 745-757.

Research output: Contribution to journalArticle

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