IMR Press / FBE / Volume 3 / Issue 3 / DOI: 10.2741/E310

Frontiers in Bioscience-Elite (FBE) is published by IMR Press from Volume 13 Issue 2 (2021). Previous articles were published by another publisher on a subscription basis, and they are hosted by IMR Press on imrpress.com as a courtesy and upon agreement with Frontiers in Bioscience.

Open Access Article

Role of histamine H4 receptor in breast cancer cell proliferation

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1 Laboratory of Radioisotopes, School of Pharmacy and Biochemistry, University of Buenos Aires, Buenos Aires, 1113, Argentina
2 National Scientific and Technical Research Council (Conicet), Buenos Aires, Argentina
3 Laboratory of Molecular Endocrinology and Signal Transduction, Institute of Biology and Experimental Medicine-Conicet, Buenos Aires, 1428, Argentina

*Author to whom correspondence should be addressed.

Academic Editor: Ekaterini Tiligada

Front. Biosci. (Elite Ed) 2011, 3(3), 1042–1060; https://doi.org/10.2741/E310
Published: 1 June 2011
(This article belongs to the Special Issue Histamine revisited: the H4 receptor in health and disease)
Abstract

In order to better understand the role of histamine H4 (H4R) receptor in breast cancer, we studied the receptor expression pattern, associated signal transduction pathway and biological responses, in breast cancer cell lines with different malignant characteristics. A different pattern of protein expression was observed in MDA-MB-231 compared to MCF-7 cells determined by western blot, exhibiting the presence of a diverse range of molecular weight species of the H4R. H4R agonist reduced cyclic adenosine monophosphate (cAMP) formation induced by forskolin only in MCF-7 cells. In MDA-MB-231 cells, H4R agonists significantly decreased cell roliferation, augmented the Annexin-V and TdT-mediated UTP-biotin Nick End labelling (TUNEL) positive cells and produced a 2.5-fold increase in cell senescence. In MCF-7 cells, H4R agonists inhibited proliferation by 50%, increasing the exponential doubling time. This effect was associated to an augment in Annexin-V and TUNEL positive cells, and a 2-fold increase in cell senescence. We conclude that H4R is functionally expressed in human breast cancer cell lines, exhibiting a key role in histamine-mediated biological processes such as cell proliferation, senescence and apoptosis.

Keywords
Human Breast Cancer
Histamine H4 Receptor
Apoptosis
Cell Senescence
Proliferation
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