Abstract 5586: Omega-3 ethyl esters: Differential involvement of NF-kB in suppressing cell viability of genetically diverse breast cancer cell lines

Objective: Cancer chemoprevention with phytochemicals such as “lutein” derived from the vegetable okra could prove beneficial. Therefore, the objective of this study was to perform a meta-analysis of “lutein” against the breast cancer cell lines (MCF-7) and to establish the possible development of lutein based nutraceuticals. Methodology: A literature survey was performed using online data bases such as PubMed, Google scholar, and EMBASE, from 2000 to 2020 by using keywords such as “Lutein”, “Anticancer activity”, “Breast cancer cell lines”, and “MCF-7”. Studies reported lutein anticancer potentials against MCF-7 were included in the study. Results: Out of 28 studies, 7 research articles fulfilled the inclusion criteria. Meta-analysis data indicated that, a lutein concentration at ≥1 µM was able to reduce the MCF-7 cell viability of 59.837 with a 95% confidence interval (CI): 48.331 to 71.343. Additionally, a forest plot of the cumulative studies also indicated that impact of lutein concentration to reduce the MCF-7 cell viability was around 60%. Moreover, the I2 value of lutein was 74%, which is a considerable heterogeneity. Conclusion: Therefore, based upon the meta-analysis data, the conclusion is that dietary lutein supplementation and fortification of food with clinical data could be an approach to develop a nutraceutical product for preventive, as well as for adjunct therapeutic purposes in various breast cancer subtypes.

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Omega-3 N-acylethanolamines are endogenously synthesised from omega-3 fatty acids in different human prostate and breast cancer cell lines

Prostaglandins Leukotrienes and Essential Fatty Acids ◽

10.1016/j.plefa.2011.09.007 ◽

2011 ◽

Vol 85 (6) ◽

pp. 305-310 ◽

Cited By ~ 31

Author(s):

I. Brown ◽

K.W.J. Wahle ◽

M.G. Cascio ◽

R. Smoum-Jaouni ◽

R. Mechoulam ◽

...

Keyword(s):

Breast Cancer ◽

Fatty Acids ◽

Cell Lines ◽

Cancer Cell ◽

Breast Cancer Cell ◽

Cancer Cell Lines ◽

Human Prostate ◽

Breast Cancer Cell Lines ◽

Omega 3 Fatty Acids ◽

Omega 3

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Stanniocalcin 2 expression is regulated by hormone signalling and negatively affects breast cancer cell viability in vitro

Journal of Endocrinology ◽

10.1677/joe-08-0043 ◽

2008 ◽

Vol 197 (3) ◽

pp. 517-529 ◽

Cited By ~ 39

Author(s):

Sanda Raulic ◽

Yudith Ramos-Valdes ◽

Gabriel E DiMattia

Keyword(s):

Breast Cancer ◽

Cell Viability ◽

Cell Lines ◽

Cancer Cell ◽

Breast Cancer Cell ◽

Human Breast Cancer ◽

Cancer Cell Lines ◽

Human Breast Cancer Cell ◽

Breast Cancer Cell Lines ◽

Human Breast

Stanniocalcin 1 (STC1) and STC2 are secreted, homodimeric glycoproteins that share 30% amino acid sequence identity. Breast tumour gene profiling studies have demonstrated significantly upregulated STC2 expression in hormone-responsive positive breast tumours; therefore, the purpose of this study was to investigate STC2 hormonal regulation and function in breast cancer cells. Here we report that STC2 is expressed in a number of human breast cancer cell lines, regardless of their oestrogen (E2) and progesterone (P4) receptor status, and its expression is readily detectable in human and mouse mammary gland tumours. Besides E2, retinoic acid (RA) and P4 play an important role in the regulation of STC2 expression, not only in MCF-7 but also in other breast cancer and non-breast cell lines. The expression of the related hormone, STC1, is not affected by the above hormones in breast and endometrial cancer cell lines implying a fundamental difference in regulation in cancer cell lines. The induction of STC2 expression by E2 and RA occurs at the transcriptional level but through intermediary transcription factors. The STC2 proximal promoter region is not responsible for hormonal induction, but exhibits a high basal transcriptional activity. Constitutive STC2 expression in human breast cancer cell lines resulted in significant impairment of cell growth, migration and cell viability after serum withdrawal. In conclusion, STC2 is a downstream target of E2, P4 and RA signalling pathways. In hormone receptor negative cell lines it can function in a paracrine/autocrine fashion to reduce cell proliferation.

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