@article {598, title = {Purified Anthocyanin from in vitro Culture of Bridelia retusa (L.) Spreng. Capable of Inhibiting the Growth of Human Oral Squamous Cell Carcinoma Cells}, journal = {Pharmacognosy Journal}, volume = {10}, year = {2018}, month = {March 2018}, pages = {559-566}, type = {Original Article}, chapter = {559}, abstract = {

The present study aims in vitro cell suspension culture of Bridelia retusa, isolation of anthocyanin, purification, fractionation and its anti-metastatic potential against oral squamous carcinoma cells. Experimental results reveal that 2, 4-D either alone or in combination with kinetin supplemented in MS medium showed significant initiation of callus from leaf explants than stem. Growth hormones, pH, light, and carbon source influence anthocyanin synthesis. Maximum callus induction was noticed with 2.5 mg/L N6-benzyladenine (BA) + 2 mg/L 2, 4-dichlorophenoxyacetic acid (2, 4-D) (98.9\%). Fresh and dry weight of the calli were i.e., 1.9 \± 0.04 and 0.45 \± 0. 03 g respectively. Optimal response was seen with light on MS medium contain 4\% glucose + 2.5 mg/L BA and 2 mg/L 2, 4-D at pH 3.5 yielded 2.8 mg /g of anthocyanins. Suspension culture medium fortified with 2, 4-D (2.5 mg/L) + BA (2 mg/L) at pH 5.0 induced anthocyanin production at pH 4.4 \– 4.6. HCl-ethanol extraction for 90 min yielded the maximum anthocyanin content. Fractionation of anthocyanin using HPLC coupled with mass spectrometry revealed 07 fractions such as acylated cyanidins, two peonidins, cyanidin 3-p-coumaroyl and feruloyl diglucoside-5-glucosides. In the search of novel therapeutic drugs against cancer, cytotoxicity effect of B.retusa anthocyanin extracts on human oral squamous cell carcinoma (SCC4, SCC9 and SCC25) cells using cell adhesion and cell viability assay was carried. The morphological alterations in SCCs cells after treatment with B.retusa anthocyanin includes nuclear condensation, fragmentation and apoptotic cells as revealed by Hoechst stain. Flow cytometry showed arresting of SCC25 cells mostly in the G0/G1 and S-G2/M stages with a concomitant up regulation of sub-G1 fraction, indicating cell death by apoptosis. Apoptosis was further substantiated by the activation of caspase-3 expression in the SCC25 cells treated with B.retusa anthocyanin. Thus, it is possible to suggest that B.retusa anthocyanin cause apoptosis of SCCs and warrant further investigation using animal models.

}, keywords = {Anthocyanin, Anti-metastatic potential, Apoptosis, Bridelia retusa, Cell suspension, in vitro culture, Purification}, doi = {10.5530/pj.2018.3.91}, url = {http://fulltxt.org/article/524}, author = {Aswathy Jayasree Madanakumar and Bosco Lawarence and Manoj GS and Murugan Kumaraswamy} } @article {561, title = {Purified Anthocyanin, its Elicitation from Cell Cultures of Begonia malabarica and Begonia rex-cultorum {\textquoteleft}Baby Rainbow{\textquoteright}and it{\textquoteright}s In vitro Cytotoxicity Analysis by MTT Assay}, journal = {Pharmacognosy Journal}, volume = {10}, year = {2018}, month = {March 2018}, pages = {553-558}, type = {Original Article}, chapter = {553}, abstract = {

Background: According to recent statistics, cancer accounts about marked percentage of total deaths in the world, although there are many therapeutic approaches. Unfortunately, the cytotoxicity properties of most chemotherapy drug are nonspecific and therefore do not distinguish between normal healthy cells and tumor cells, these events have led to inappropriate and toxic therapeutic agents with a wide range of side effects. However, several experimental and epidemiological studies have suggested that fruits and vegetables are associated with low risk of various types of cancer. Anthocyanins are natural pigments that provide intense purple to red color in plants. Anthocyanin possess the ability to inhibit oxidative stress and to induce apoptosis in malignant cells, thus may prevent carcinogenesis. Methods: Antiproliferative properties of purified anthocyanin extract from elicited cell suspension cultures of Begonia malabarica and Begonia rex-cultorum \‘Baby rainbow\’ was investigated in terms of MTT assay. Anthocyanin extracts were tested for their ability to inhibit the growth of HT29 (colon cancer cells), MG63 (Osteosarcoma), HeLa (Cervical cancer cells) and L929 (Mouse Fibroblast L929) cell lines. Results: Cell viability decreased in a dose dependent manner in all the considered cell lines treated with anthocyanin extracts. The extract of Begonia rex-cultorum \‘Baby rainbow\’ exhibited significant cytotoxic activity against all tumor cell lines than Begonia malabarica extract. Begonia malabarica and Begonia rex-cultorum \‘Baby rainbow\’ anthocyanin extract exhibited the highest cytotoxicity towards HT29 and HeLa cell lines respectively. But, MG63 resulted in comparatively higher percentage of viability of cell lines at the same concentrations. The anthocyanin extract produced significant morphological alterations on cell lines in culture. Meanwhile, the extracts showed poor cytotoxicity against the normal cell line. Conclusion: The morphological alteration of the treated cancer cells presented clear evidence of significant cytotoxicity of anthocyanin extracts of both Begonias in all the three cell lines. Thus, anthocyanin may act as chemopreventive agents for various cancer cell lines.

}, keywords = {Anthocyanin, Begonia, Cancer, Cell suspension., Cytotoxicity, MTT Assay}, doi = {10.5530/pj.2018.3.90}, url = {http://fulltxt.org/article/523}, author = {Aswathy Jayasree Madanakumar and Murugan Kumaraswamy} }