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http://dx.doi.org/10.5352/JLS.2010.20.7.1027

The Extracts from Liriope platyphylla Significantly Stimulated Insulin Secretion in the HIT-T15 Pancreatic β-Cell Line  

Kim, Ji-Ha (Department of Biomaterials Science, College of Natural Resources and Life Science, Pusan National University)
Kim, Ji-Eun (Department of Biomaterials Science, College of Natural Resources and Life Science, Pusan National University)
Lee, Yoen-Kyung (Department of Biomaterials Science, College of Natural Resources and Life Science, Pusan National University)
Nam, So-Hee (Department of Biomaterials Science, College of Natural Resources and Life Science, Pusan National University)
Her, Youn-Kyung (Department of Biomaterials Science, College of Natural Resources and Life Science, Pusan National University)
Jee, Seoung-Wan (Department of Laboratory Animal Resources, National Institute of Toxicological Research, Korean FDA)
Kim, Sun-Guen (Department of Horticultural Bioscience, College of Natural Resources and Life Science, Pusan National University)
Park, Da-Jung (Department of Horticultural Bioscience, College of Natural Resources and Life Science, Pusan National University)
Choi, Young-Whan (Department of Horticultural Bioscience, College of Natural Resources and Life Science, Pusan National University)
Hwang, Dae-Youn (Department of Biomaterials Science, College of Natural Resources and Life Science, Pusan National University)
Publication Information
Journal of Life Science / v.20, no.7, 2010 , pp. 1027-1033 More about this Journal
Abstract
Liriope platyphylla has traditionally been used in Korea and China as a therapeutic drug for the treatment of coughing, sputum, neurodegenerative disorders, obesity, and diabetes. In an effort to assess the functions of a novel extract from Liriope platyphylla in diabetes therapy, the insulin secretion abilities of 10 extracts were screened via measurements of insulin concentration in the culture supernatant using an Insulin ELISA kit. The results of this assay showed the highest levels of insulin in the LP9M80-H treated group, followed by the LP-H, LP-M, LP-E and LP9M80-C treated groups, whereas other extracts did not induce insulin secretion in the HIT-T15 cells. However, the extracts capable of stimulating insulin secretion simultaneously evidenced high apoptotic activity as compared with other extracts. Therefore, one of these extracts, LP9M80-H, was initially selected as the optimal candidate for a therapeutic drug and its optimal concentration was determined. The results of the ELISA and MTT assay demonstrated that a concentration of approximately 100-125 ug/ml of LP9M80-H was optimal with regards to cell viability and insulin secretion in the HIT-T15 cells. These results suggest that LP9M80-H could be considered as an excellent candidate for a diabetes-therapeutic drug that could induce insulin secretion in pancreatic $\beta$-cells.
Keywords
Liriope platyphylla; insulin; MTT assay; diabetes;
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