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Article Publish Status: FREE
Abstract Title:

The Steroidal Alkaloid Tomatidine and Tomatidine-Rich Tomato Leaf Extract Suppress the Human Gastric Cancer-Derived 85As2 Cells In Vitro and In Vivo via Modulation of Interferon-Stimulated Genes.

Abstract Source:

Nutrients. 2022 Feb 28 ;14(5). Epub 2022 Feb 28. PMID: 35267998

Abstract Author(s):

Junya Fujimaki, Neo Sayama, Shigenobu Shiotani, Takanori Suzuki, Miki Nonaka, Yasuhito Uezono, Mamoru Oyabu, Yasutomi Kamei, Haruo Nukaya, Keiji Wakabayashi, Akihito Morita, Tomoki Sato, Shinji Miura

Article Affiliation:

Junya Fujimaki

Abstract:

The steroidal alkaloid tomatidine is an aglycone ofα-tomatine, which is abundant in tomato leaves and has several biological activities. Tomatidine has been reported to inhibit the growth of cultured cancer cells in vitro, but its anti-cancer activity in vivo and inhibitory effect against gastric cancer cells remain unknown. We investigated the efficacy of tomatidine using human gastric cancer-derived 85As2 cells and its tumor-bearing mouse model and evaluated the effect of tomatidine-rich tomato leaf extract (TRTLE) obtained from tomato leaves. In the tumor-bearing mouse model, tumor growth was significantly inhibited by feeding a diet containing tomatidine and TRTLE for 3 weeks. Tomatidine and TRTLE also inhibited the proliferation of cultured 85As2 cells. Microarray data of gene expression analysis in mouse tumors revealed that the expression levels of mRNAs belonging to the type I interferon signaling pathway were altered in the mice fed the diet containing tomatidine and TRTLE. Moreover, the knockdown of one of the type I interferon-stimulated genes (ISGs), interferonα-inducible protein 27 (), inhibited the proliferation of cultured 85As2 cells. This study demonstrates that tomatidine and TRTLE inhibit the tumor growth in vivo and the proliferation of human gastric cancer-derived 85As2 cells in vitro, which could be due to the downregulation of ISG expression.

Study Type : Animal Study, In Vitro Study

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