PT - JOURNAL ARTICLE AU - Irina Sergeevna Milentyeva AU - Margarita Yuryevna Drozdova AU - Violeta Mironovna Le TI - The effect of biohanin A isolated from the callus culture of meadow clover (<em>Trifolium pratense L</em>.) on the life expectancy and survival of <em>Caenorhabditis elegans</em> AID - 10.1101/2022.04.12.488102 DP - 2022 Jan 01 TA - bioRxiv PG - 2022.04.12.488102 4099 - http://biorxiv.org/content/early/2022/04/13/2022.04.12.488102.short 4100 - http://biorxiv.org/content/early/2022/04/13/2022.04.12.488102.full AB - Oxidative stress, in which healthy aging is limited, is a problem, since in the process there is an uncontrolled production of reactive radicals that negatively affect cells. Heat stress is closely related to oxidative stress, as it stimulates the production of radicals. Meadow clover (Trifolium pratense L.) is a promising source of isoflavonoids that have various positive effects on the body. The aim of the work is to study the effect of biohanin A, isolated from Trifolium pratense L. callus cultures, on the life expectancy of the C. elegans model organism, as well as its survival under oxidative and thermal stress.It was found that biohanin A increased the lifespan of C. elegans worms. The best concentration was determined - 100 microns, at which the survival rate of nematodes after 61 days of incubation was 16.0%. After 48 hours, the survival rate of worms was the highest (87.1%) at a concentration of biohanin A of 200 microns. Other concentrations 10, 50, 100 (81,2, 83,0, 82,4 %) they also showed a higher survival rate compared to the control (74.0%). In addition, the survival rate under heat stress of C. elegans was higher by 12.0; 8.4; 4.0% compared with the control. Thus, the results show the antioxidant potential of biohanin A from plant material under oxidative and thermal stress. The substance also had a positive effect on the lifespan of C. elegans.Competing Interest StatementThe authors have declared no competing interest.