A mechanistic insight intoNigella sativamediated anticancer effect on breast cancer through regulation of various miRNAs: Anin vitro&in vivostudy

ABSTRACT Background Cancer continues to threat the mortal alongside scientific community with its burgeoning grasp. Although efforts have been directed to tame cancer by radiotherapy, photodynamic therapy, chemotherapy it came at a cost of fatal side effects. Purpose Plant derived bioactive compounds carries an inevitable advantage of being safer, bioavailable & less toxic compared to contemporary chemotherapeutics. This study analyzed anti-cancerous potential of volatile oil, extracted from Nigella sativa , in-vitro against MDA-MB-231, MCF-7 & in-vivo on tumor growth in mice after successful oral administration. Study Design Our strategic approach employed solvent extraction of black seed oil (BSO) to highlight orchestrated use of its potent integrants - TQ, Carvacrol & TA which in modest amounts show anti-cancerous properties compared to their individual treatment. We attempted to show this cost effective, safe & bioavailable form of dealing with the atrocities of breast cancer by means of MTT, Apoptotic, Western Blot Assays besides Transwell & Wound healing Assay. Reduction in the solid tumour in-vivo & near normalcy restoration of tissue section architecture from the BSO treated tumour sets are indicative of the better anti-tumorigenic potential of BSO. Methods BSO’s Solvent extraction was performed followed by its characterization. MTT aided cytotoxicity study of BSO alongside major components in PBMC & cancer cells while its efficacy was presented by flow cytometric ROS analysis, cell cycle arrest & apoptosis assessment. Anti-migratory potential evaluated by Wound Healing, Transwell Migration & Western Blot while the expression study of a wide range of proteins, miRNAs & the in-vivo studies undertaken climaxed the confirmation of the anti-cancerous potential of BSO. Results Comparatively reduced concentrations of TQ, TA & Carvacrol in BSO played a synergistic role to enhance apoptotic potential via Caspase 7 & 9, through enhanced ROS & expression of apoptotic family of proteins, miRNAs besides uplifting the anti-migratory perspective by effectively enhancing E-cad & downregulating lamellipodia, filopodia assembly & MMPs in MCF-7 & MDA-MB-231. Similar observations in-vivo outlined the therapeutic potential of BSO. Conclusion This study culminates isolation & processing of BSO in a simplified procedure, thereby aiming at a more lucrative paradigm to be accepted in contemporary phytomedicine research.