title: Anti-cancer effect of Cassia auriculata leaf extract in vitro through cell cycle arrest and induction of apoptosis in human breast and larynx cancer cell lines.
abstract: The in vitro anti-cancer effect of Cassia auriculata leaf extract (CALE) was evaluated in human breast adenocarcinoma MCF-7 and human larynx carcinoma Hep-2 cell lines. CALE preferentially inhibited the growth of both the cell lines in a dose-dependent manner with IC(50) values of 400 and 500 microg for MCF-7 and Hep-2 cells, respectively. The results showed the anti-cancer action is due to nuclear fragmentation and condensation, associated with the appearance of A(0) peak in cell cycle analysis that is indicative of apoptosis. In addition, CALE treated MCF-7 and Hep-2 cells had decreased expression of anti-apoptotic Bcl-2 protein and increased expression of pro-apoptotic Bax protein, eventually leading a decrease in the Bcl-2/Bax ratio. These results demonstrated that CALE inhibits the proliferation of MCF-7 and Hep-2 cells through induction of apoptosis, making CALE a candidate as new anti-cancer drug.
authors.affiliation: Department of Chemistry, Presidency College, Chennai 600005, Tamil Nadu, India. prachu_rg@yahoo.co.uk
authors.forename: R
authors.initials: R
authors.lastname: Prasanna
authors.forename: C C
authors.initials: CC
authors.lastname: Harish
authors.forename: R
authors.initials: R
authors.lastname: Pichai
authors.forename: D
authors.initials: D
authors.lastname: Sakthisekaran
authors.forename: P
authors.initials: P
authors.lastname: Gunasekaran
mesh_terms: D000972:Antineoplastic Agents, Phytogenic / Q000494:pharmacology*; D017209:Apoptosis; D001943:Breast Neoplasms / Q000378:metabolism; D002366:Cassia / Q000737:chemistry*; D002453:Cell Cycle / Q000187:drug effects*; D045744:Cell Line, Tumor; D006801:Humans; D020128:Inhibitory Concentration 50; D007822:Laryngeal Neoplasms / Q000378:metabolism; D010936:Plant Extracts / Q000494:pharmacology*; D018515:Plant Leaves / Q000737:chemistry; D019253:Proto-Oncogene Proteins c-bcl-2 / Q000378:metabolism; D051028:bcl-2-Associated X Protein / Q000378:metabolism
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D010936:Plant Extracts; D019253:Proto-Oncogene Proteins c-bcl-2; D051028:bcl-2-Associated X Protein