Journal
CELL ADHESION & MIGRATION
Volume 4, Issue 3, Pages 409-418Publisher
TAYLOR & FRANCIS INC
DOI: 10.4161/cam.4.3.11682
Keywords
MMP-9; ATRA; integrin; EGFR; NF kappa B
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Funding
- Chittaranjan National Cancer Institute, Kolkata, India
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The vitamin A derivative all-trans retinoic acid (ATRA) is considered as a potent chemotherapeutic drug for its capability of regulating cell growth and differentiation. We aimed to study the effect of ATRA on MMP-9 in MDA-MB-231, human breast cancer cells and the probable molecular mechanisms through which ATRA exerts its effect. Our experimental findings demonstrate that ATRA enters into the nucleus and regulates various signaling pathways viz. Integrin, FAK, ERK, PI-3K, NF kappa B and also EGFR and downregulates pro-MMP-9 activity as well as its expression. As a result MDA-MB-231 cell migration on fibronectin medium gets retarded in presence of ATRA. ATRA upregulates TIMP-1 expression. Our study may help to understand the role of ATRA as a regulator of MMP-9 and the possible signaling pathways which are involved in this ATRA mediated downregulation of MMP-9.
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