Identification of the effects of acid-resistant Lactobacillus caseimetallopeptidase gene under colon-specific promoter on the colorectal and breast cancer cell lines

سال انتشار: 1400
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 384

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شناسه ملی سند علمی:

JR_IJBMS-24-4_012

تاریخ نمایه سازی: 6 اردیبهشت 1400

چکیده مقاله:

Objective(s): Anti-tumor effects of Lactobacilli as normal flora have been described. In a previous study, we identified a protein isolated from the bacterium Lactobacillus casei ATCC ۳۹۳۹۲ in acidic pH conditions named metallopeptidase. Therefore, we decided to evaluate the effect of the recombinant plasmid coding metallopeptidase protein on the inhibition, proliferation, or apoptosis of the colorectal and breast cancer cell lines. Materials and Methods: Identified metallopeptidase gene of L. casei under the specific colon cancer promoter was transferred to the Human SW۴۸۰ and MDA-MB۲۳۱ cells. Cell viability was evaluated in these two cancer cell lines via MTT assay, apoptotic changes, and expression level of p۵۳ and MAP۲K۱ genes in comparison with healthy blood cells as a control group. Results: Viability of SW۴۸۰ and MDA-MB۲۳۱ cells was identified at ۲۵% and ۷%, respectively. An increase in apoptotic cell death in the SW۴۸۰ cell line was observed as revealed by Tunnel staining. The expression assay of TP۵۳ and MAP۲K۱ genes showed that MPL protein altered gene expression in a cell type-specific manner. Tunnel analyses showed that the pronounced cytotoxic effect of pEGFP-C۲/MPL plasmid on SW۴۸۰ cells was mediated through apoptosis. Conclusion: These results suggest that endogenous recombinant MPL under colon specific promoter inhibits the proliferation of SW۴۸۰ colorectal cancer cells by increase in MAP۲K۱ and P۵۳ activation. L. casei metallopeptidase under the same circumstances could not affect the growth rate and viability of MDA-MB۲۳۱ breast cancer cells in vitro.

کلیدواژه ها:

Apoptosis Cytotoxicity Lactobacillus casei Recombinant plasmid TP۵۳ and MAP۲K۱ genes ، Expression

نویسندگان

Narges Dadfarma

Department of Microbiology, Faculty of Biological Sciences, North Tehran Branch, Islamic Azad University, Tehran, Iran

Jamileh Nowroozi

Department of Microbiology, Faculty of Biological Sciences, North Tehran Branch, Islamic Azad University, Tehran, Iran

Bahram Kazemi

Cellular and Molecular Biology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran

Mojgan Bandehpour

Cellular and Molecular Biology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran

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