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Abstract Title:

evaluation ofL. (Soursop) leaf methanol extracts on inhibition of tumorigenicity and metastasis of breast cancer cells.

Abstract Source:

Biomarkers. 2020 Oct 22:1-10. Epub 2020 Oct 22. PMID: 33048613

Abstract Author(s):

Aditi Venkatesh Naik, Krishnan Sellappan

Article Affiliation:

Aditi Venkatesh Naik

Abstract:

PURPOSE: The present study evaluates theanti-tumorigenic potential of leaf methanol extracts of(LMAM).

MATERIALS AND METHODS: The cytotoxic activity was assessed in MCF-7 cells by MTT assay at various concentrations ranging from 25-250µg/mL. MCF-7 cells were treated with 50 and 100 µg/mL LMAM for 24 h. To detect LMAM-induced apoptosis; Hoescht 33342 staining along with Cell cycle analysis, Annexin-PI probe as well as oxidative stress damage by reactive oxygen species (ROS) measurements were determined using flow cytometricanalysis. While caspase-3 expression levels were studied employing the qRT-PCR method.

RESULTS: LMAM exhibited significant inhibition of MCF-7 cells with an ICvalue of 85.55 µg/mL. Hoescht staining showed marked morphological features characteristic of apoptosis in LMAM treated cells. Cell cycle analysis confirmed the proven capability of LMAM showing a 30% rise in Gphase upon treatment with 100 µg/mL LMAM, thus inducing cell cycle arrest at Gphase and a rise in sub G-Gpopulation paralleled with a decrease in S phase. Flow cytometric analysis with Annexin V-FITC-PI staining indicated an increase in the early and late apoptotic population with a 3.38% and 19.47% rise respectively when treated with 100 µg/mL LMAM. Treatment with 100 µg/mL LMAM caused an increase in intracellular ROS with MFI value 3334.08. Upregulation of caspase-3 was observed with a 2.18 and 32.47 fold increase compared to control in MCF-7 cells cultured at 50 µg/mL and 100 µg/mL LMAM respectively suggesting caspase-dependent apoptosis.

CONCLUSION: LMAM proved as a potent ethno-chemopreventive agent and a potential lead in cancer treatment attributable to the synergistic interactive properties of phytoconstituents.

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