PMID- 37239840 OWN - NLM STAT- MEDLINE DCOM- 20230529 LR - 20230529 IS - 1422-0067 (Electronic) IS - 1422-0067 (Linking) VI - 24 IP - 10 DP - 2023 May 9 TI - Natural Gallic Acid and Methyl Gallate Induces Apoptosis in Hela Cells through Regulation of Intrinsic and Extrinsic Protein Expression. LID - 10.3390/ijms24108495 [doi] LID - 8495 AB - Induction of apoptosis is one of the targeted approaches in cancer therapies. As previously reported, natural products can induce apoptosis in in vitro cancer treatments. However, the underlying mechanisms of cancer cell death are poorly understood. The present study aimed to elucidate cell death mechanisms of gallic acid (GA) and methyl gallate (MG) from Quercus infectoria toward human cervical cancer cell lines (HeLa). The antiproliferative activity of GA and MG was characterised by an inhibitory concentration using 50% cell populations (IC(50)) by an MTT [3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide] assay. Cervical cancer cells, HeLa, were treated with GA and MG for 72 h and calculated for IC(50) values. The IC(50) concentration of both compounds was used to elucidate the apoptotic mechanism using acridine orange/propidium iodide (AO/PI) staining, cell cycle analysis, the Annexin-V FITC dual staining assay, apoptotic proteins expressions (p53, Bax and Bcl-2) and caspase activation analysis. GA and MG inhibited the growth of HeLa cells with an IC(50) value of 10.00 +/- 0.67 microg/mL and 11.00 +/- 0.58 microg/mL, respectively. AO/PI staining revealed incremental apoptotic cells. Cell cycle analysis revealed an accumulation of cells at the sub-G1 phase. The Annexin-V FITC assay showed that cell populations shifted from the viable to apoptotic quadrant. Moreover, p53 and Bax were upregulated, whereas Bcl-2 was markedly downregulated. Activation of caspase 8 and 9 showed an ultimate apoptotic event in HeLa cells treated with GA and MG. In conclusion, GA and MG significantly inhibited HeLa cell growth through apoptosis induction by the activation of the cell death mechanism via extrinsic and extrinsic pathways. FAU - Abdullah, Hasmah AU - Abdullah H AUID- ORCID: 0000-0003-2550-0354 AD - Faculty of Resilience, Rabdan Academy, Al Dhafeer Street, Abu Dhabi 22401, United Arab Emirates. AD - School of Health Sciences, Health Campus, Universiti Sains Malaysia, Kubang Kerian 16150, Kelantan, Malaysia. FAU - Ismail, Ilyana AU - Ismail I AD - School of Health Sciences, Health Campus, Universiti Sains Malaysia, Kubang Kerian 16150, Kelantan, Malaysia. AD - Faculty of Health Sciences, Universiti Sultan Zainal Abidin, Gong Badak Campus, Kuala Nerus 21300, Terengganu, Malaysia. FAU - Suppian, Rapeah AU - Suppian R AD - School of Health Sciences, Health Campus, Universiti Sains Malaysia, Kubang Kerian 16150, Kelantan, Malaysia. FAU - Zakaria, Nor Munirah AU - Zakaria NM AUID- ORCID: 0000-0002-5280-7426 AD - School of Health Sciences, Health Campus, Universiti Sains Malaysia, Kubang Kerian 16150, Kelantan, Malaysia. LA - eng PT - Journal Article DEP - 20230509 PL - Switzerland TA - Int J Mol Sci JT - International journal of molecular sciences JID - 101092791 RN - 0 (bcl-2-Associated X Protein) RN - 623D3XG80C (methyl gallate) RN - 0 (Tumor Suppressor Protein p53) RN - I223NX31W9 (Fluorescein-5-isothiocyanate) RN - 0 (Proto-Oncogene Proteins c-bcl-2) RN - 632XD903SP (Gallic Acid) RN - 0 (Annexins) SB - IM MH - Female MH - Humans MH - HeLa Cells MH - bcl-2-Associated X Protein/metabolism MH - *Uterine Cervical Neoplasms MH - Tumor Suppressor Protein p53 MH - Fluorescein-5-isothiocyanate MH - Apoptosis MH - Cell Proliferation MH - Proto-Oncogene Proteins c-bcl-2/metabolism MH - Gallic Acid/pharmacology MH - Annexins MH - Cell Line, Tumor PMC - PMC10218240 OTO - NOTNLM OT - apoptosis OT - gallic acids OT - intrinsic and extrinsic pathways OT - methyl gallate COIS- The authors declare that they have no conflict of interest. EDAT- 2023/05/27 09:42 MHDA- 2023/05/29 06:42 PMCR- 2023/05/09 CRDT- 2023/05/27 01:13 PHST- 2023/02/17 00:00 [received] PHST- 2023/03/23 00:00 [revised] PHST- 2023/04/12 00:00 [accepted] PHST- 2023/05/29 06:42 [medline] PHST- 2023/05/27 09:42 [pubmed] PHST- 2023/05/27 01:13 [entrez] PHST- 2023/05/09 00:00 [pmc-release] AID - ijms24108495 [pii] AID - ijms-24-08495 [pii] AID - 10.3390/ijms24108495 [doi] PST - epublish SO - Int J Mol Sci. 2023 May 9;24(10):8495. doi: 10.3390/ijms24108495.