The present study focuses on the antiproliferative activity of polyphenolic flavonoids found in defatted seeds of Azadirachta indica and Momordica charantia with the regulatory function of tumor suppressor genes inducing Oral Squamous Cell Carcinoma. Polyphenolic flavonoid in extracts was characterized using chromatographic analysis and has confirmed the presence of quercetin, rutin and tannic acid in the extracts of A. indica and M. charantia. According to DPPH assay and reducing power assays, free radical scavenging was found to be high in ethanolic extract of defatted seeds. Antiproliferative efficacies of defatted seed extracts against KB cell line (mouth) were studied by MTT assay and revealed that aqueous extract of defatted seeds of M. charantia has exhibited maximum antiproliferative activity against KB cells. Antioxidant activity of defatted seed extracts were observed on treated KB cells by determining enzymatic activity (SOD, Cat, and GST) and nonenzyme content (GSH and MDA Content). Using the AutoDock tool, quercetin, rutin and tannin acid revealed that mutant p53, TWIST related protein, TGF-β and Snail I have the best binging energy results. MD simulation was observed on best docking results between the molecule and identified flavonoid by Desmond V 5.9 package . This leads to the conclusion that bioactive extracts with antiproliferative activity, antioxidant capacity and polyphenols with binding efficacy against tumor suppressor gene regulatory function could be used as a herbal remedy.Communicated by Ramaswamy H. Sarma.
Keywords: Agro-waste; oral cancer; polyphenols; seed cake; transcriptional factor; tumor suppressor gene.