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Modulation of the leptin receptors expression in breast cancer cell lines exposed to leptin and tamoxifen.

Abstract：

:One of the factors that has increased the incidence and worse prognosis of breast cancer is obesity. In this condition, high amounts of leptin are secreted, which have proliferative, mitogenic, antiapoptotic, and proinflammatory activity that may be antagonistic to treatment with tamoxifen, considered the first choice. The modulation evaluation of leptin receptor expression in the presence of leptin and tamoxifen stimuli was performed in breast cancer cell lines MCF 7, MDA MB 231 and HCC 1937 as a model of initial approach for the study of breast cancer subtypes and their behavior to the action response of adipokines and their possible relationship with the mechanism of resistance to chemotherapeutics such as tamoxifen in ER positive cell lines and triple negative marker. It was determined that leptin increases the proliferation of the three breast cancer cell lines and tamoxifen is able to exert an antiproliferative effect on them, however, it was identified that the ability of tamoxifen to decrease the proliferation of cancer cells is diminished in the presence of leptin, in addition to changes in the modulation of the expression of its receptor. It was determined that tamoxifen induces a greater modulation of the expression of ObRb in cell lines, which may be related to the decrease of its antiproliferative activity, while leptin generates a proliferative effect in the three cell lines and could participate in the tamoxifen treatment resistance mechanism.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Linares RL,Benítez JGS,Reynoso MO,Romero CG,Sandoval-Cabrera A

doi

10.1038/s41598-019-55674-x

subject

Has Abstract

pub_date

2019-12-16 00:00:00

pages

19189

issue

1

issn

2045-2322

pii

10.1038/s41598-019-55674-x

journal_volume

9

pub_type

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