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Purple sweet potato extract maintains intestinal homeostasis and extend lifespan through increasing autophagy in female Drosophila melanogaster
Author(s) -
Zhang Xiaohan,
Wang Hao,
Han Ying,
Pei Ya,
Guo Yatu,
Cui Steve W.
Publication year - 2021
Publication title -
journal of food biochemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.507
H-Index - 47
eISSN - 1745-4514
pISSN - 0145-8884
DOI - 10.1111/jfbc.13861
Subject(s) - china , library science , drosophila (subgenus) , key (lock) , agriculture , functional food , drosophila melanogaster , state (computer science) , microbiology and biotechnology , political science , biology , food science , computer science , ecology , genetics , gene , algorithm , law
Purple sweet potatoes extract (PSPE) have been used as a natural food antioxidant with high anthocyanin concentrations. Research investigated the lifespan and the mechanisms of PSPE on female Drosophila melanogaster . Supplementation of PSPE extended the lifespan by 16.3% and had a protective effect on injury by oxidative stress. PSPE treatment enhanced the endogenous antioxidant enzyme activity and reduced malondialdehyde (MDA) content. Furthermore, PSPE significantly up‐regulated foxo ‐related genes, inhibited mTOR mRNA expression, and activated autophagy to maintain intestinal homeostasis. Meanwhile, PSPE improved intestinal barrier dysfunction by 22.86%, decelerated the abnormal proliferation rate of intestinal stem cell (ISCs) by 23.77%, and improved intestinal integrity in geriatric D. melanogaster . In conclusion, PSPE may maintain intestinal homeostasis, and improve the antioxidant and stress resistance capacity through the insulin and rapamycin pathway, thereby extending the lifespan. Therefore, it provides active support to the development and application of PSPE in functional food. Practical applications In recent years, with the increase of age, age‐related complications have generally increased and seriously affected people’s healthy life. Purple sweet potato is a nutrient‐rich substance, which not only has a unique color but also contains rich anthocyanins, so it has many potential biological and pharmacological functions. Our results showed that the PSPE had a good effect of maintaining the intestinal homeostasis of the older adult, and provided a favorable theoretical basis for the development of PSPE functional products and scientific academic research.