Histone Demethylase JMJD2B Functions as a Co-Factor of Estrogen Receptor in Breast Cancer Proliferation and Mammary Gland Development
2011

JMJD2B's Role in Breast Cancer and Estrogen Signaling

publication Evidence: high

Author Information

Author(s): Kawazu Masahito, Saso Kayoko, Tong Kit I., McQuire Tracy, Goto Kouichiro, Son Dong-Ok, Wakeham Andrew, Miyagishi Makoto, Mak Tak W., Okada Hitoshi

Primary Institution: The Campbell Family Cancer Research Institute, Ontario Cancer Institute, University Health Network, Toronto, Ontario, Canada

Hypothesis

JMJD2B is a key co-regulator in the estrogen signaling pathway that influences breast cancer cell proliferation.

Conclusion

JMJD2B is essential for estrogen-induced cell proliferation and mammary gland development, making it a potential therapeutic target in breast cancer.

Supporting Evidence

  • JMJD2B is expressed in a high proportion of human breast tumors.
  • JMJD2B expression levels significantly correlate with estrogen receptor positivity.
  • Knockdown of JMJD2B severely impairs estrogen-induced cell proliferation.
  • JMJD2B is recruited to ERα target sites and facilitates transcription of ER responsive genes.

Takeaway

JMJD2B helps breast cancer cells grow by working with estrogen, and if we block it, the cancer cells don't grow as well.

Methodology

The study involved cell line experiments, gene expression analysis, and mouse models to assess the role of JMJD2B in estrogen signaling.

Limitations

The study primarily focuses on in vitro and mouse models, which may not fully replicate human breast cancer biology.

Statistical Information

P-Value

p<0.01

Statistical Significance

p<0.01

Digital Object Identifier (DOI)

10.1371/journal.pone.0017830

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