Asian Pacific Journal of Cancer Prevention

Asian Pacific Journal of Cancer Prevention (아시아태평양암예방학회)
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Probiotic Conjugated Linoleic Acid Mediated Apoptosis in Breast Cancer Cells by Downregulation of NF-κB

  • Published : 2016.07.01
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Abstract

Conjugated linoleic acid, a functional lipid, produced from Lactobacillus plantarum (LP-CLA), has been demonstrated to possess apoptotic activity. The anti-proliferative and apoptotic potential of LP-CLA was here evaluated in vitro using the MDA-MB-231 human breast cancer cell line as a model system. Proliferation of MDA-MB-231 cells was inhibited with increasing concentrations of LP-CLA with altered morphological features like cell detachment, rounding of cells and oligonucleosomal fragmentation of DNA. Flow cytometry confirmed the apoptotic potential of LP-CLA by ANNEXIN V/PI double staining. Furthermore, outcome results indicated that the apoptosis was mediated by downregulation of the NF-${\kappa}B$ pathway which in turn acted through proteasome degradation of $I{\kappa}B{\alpha}$, inhibition of p65 nuclear translocation, release of cytochrome-C from mitochondria and finally overexpression of Bax protein. Thus, conjugated linoleic acid, a natural product derived from probiotics, could therefore be a possible potential chemotherapeutic agent due to its apoptotic activity against estrogen receptor negative breast cancer cells.

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References

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