PRMT7 induces epithelial-to-mesenchymal transition and promotes metastasis in breast cancer.

Epithelial-to-mesenchymal transition (EMT) enables metastasis. E-cadherin loss is a hallmark of EMT, but there remains an incomplete understanding of the epigenetics of this process. The protein arginine methyltransferase PRMT7 functions in various physiologic processes, including mRNA splicing, DNA repair, and neural differentiation, but its possible roles in cancer and metastasis have not been explored. In this report, we show that PRMT7 is expressed at higher levels in breast carcinoma cells and that elevated PRMT7 mediates EMT and metastasis. PRMT7 could inhibit the expression of E-cadherin by binding to its proximal promoter in a manner associated with altered histone methylation, specifically with elevated H4R3me2s and reduced H3K4me3, H3Ac, and H4Ac, which occurred at the E-cadherin promoter upon EMT induction. Moreover, PRMT7 interacted with YY1 and HDAC3 and was essential to link these proteins to the E-cadherin promoter. Silencing PRMT7 restored E-cadherin expression by repressing H4R3me2s and by increasing H3K4me3 and H4Ac, attenuating cell migration and invasion in MDA-MB-231 breast cancer cells. Overall, our results define PRMT7 as an inducer of breast cancer metastasis and present the opportunity for applying PRMT7-targeted therapeutics to treat highly invasive breast cancers.

• Publication year

  2014

• Venue

  Cancer Research

• Publication date

  2014-08-18

• Fields of study

  Biology, Medicine

• Identifiers
  DOI 10.1158/0008-5472.CAN-14-0800PMID 25136067
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

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