A chemical investigation of Streptomyces sp. GZWMJZ-662, an endophytic actinomycete isolated from Houttuynia cordata Thunb., has yielded eleven bohemamine dimers (1-11). Notably, the newly identified dibohemamines I–O (1-7) have not been previously reported. Their structures were elucidated through detailed spectroscopic analysis, encompassing high-resolution electrospray ionization mass, nuclear magnetic resonance, infrared radiation, ultraviolet–visible, and electronic circular dichroism spectroscopy. Dibohemamine I (1) exhibited selective cytotoxic effects against the cancer cell lines 786-O and GBC-SD among the 18 cell lines evaluated, with the half-inhibitory concentration values of 3.24±0.20 and 7.36±0.41 μM, respectively.
Dong-Yang Wang
,
Ming-Xing Li
,
Yan-Chao Xu
,
Peng Fu
,
Wei-Ming Zhu
,
Li-Ping Wang
. Dibohemamines I-O from Streptomyces sp. GZWMJZ-662, an endophytic actinomycete from the medicinal and edible plant Houttuynia cordata Thunb.[J]. 应用天然产物, 2025
, 15(1)
: 9
-9
.
DOI: 10.1007/s13659-024-00494-4
A chemical investigation of Streptomyces sp. GZWMJZ-662, an endophytic actinomycete isolated from Houttuynia cordata Thunb., has yielded eleven bohemamine dimers (1-11). Notably, the newly identified dibohemamines I–O (1-7) have not been previously reported. Their structures were elucidated through detailed spectroscopic analysis, encompassing high-resolution electrospray ionization mass, nuclear magnetic resonance, infrared radiation, ultraviolet–visible, and electronic circular dichroism spectroscopy. Dibohemamine I (1) exhibited selective cytotoxic effects against the cancer cell lines 786-O and GBC-SD among the 18 cell lines evaluated, with the half-inhibitory concentration values of 3.24±0.20 and 7.36±0.41 μM, respectively.
[1] Selim MSM, Abdelhamid SA, Mohamed SS. Secondary metabolites and biodiversity of actinomycetes. Genet Eng Biotechnol. 2021;19:72.
[2] Genilloud O. Actinomycetes: still a source of novel antibiotics. Nat Prod Rep. 2017;34:1203–32.
[3] Schniete JK, Fernández-Martínez LT. Natural product discovery in soil actinomycetes: unlocking their potential within an ecological context. Curr Opin Microbiol. 2024;79: 102487.
[4] Matsumoto A, Takahashi Y. Endophytic actinomycetes: promising source of novel bioactive compounds. J Antibiot (Tokyo). 2017;70(5):514–9.
[5] Nalini MS, Prakash HS. Diversity and bioprospecting of actinomycete endophytes from the medicinal plants. Lett Appl Microbiol. 2017;64:261–70.
[6] Ayswaria R, Vasu V, Krishna R. Diverse endophytic Streptomyces species with dynamic metabolites and their meritorious applications: a critical review. Crit Rev Microbiol. 2020;46:750–8.
[7] Bernardi DI, das Chagas FO, Monteiro AF, Dos Santos GF, de Souza Berlinck RG. Secondary metabolites of endophytic actinomycetes: isolation, synthesis, biosynthesis, and biological activities. Prog Chem Org Nat Prod 2019; 108: 207–296.
[8] Zotchev SB. Unlocking the potential of bacterial endophytes from medicinal plants for drug discovery. Microb Biotechnol. 2024;17: e14382.
[9] Wei P, Luo Q, Hou Y, Zhao F, Li F, Meng Q. Houttuynia Cordata Thunb.: a comprehensive review of traditional applications, phytochemistry, pharmacology and safety. Phytomedicine. 2023;123:155195.
[10] Das SK, Deka SJ, Paul D, Gupta DD, Das TJ, Maravi DK, Tag H, Hui PK. In-silico based identification of phytochemicals from Houttuynia cordata Thunb as potential inhibitors for overexpressed HER2 and VEGFR2 cancer genes. J Biomol Struct Dyn. 2022;40:6857–67.
[11] Lou YM, Guo ZZ, Zhu YF, Kong MY, Zhang RR, Lu LL, Wu FC, Liu ZQ, Wu JJ. Houttuynia cordata Thunb and its bioactive compound 2-undecanone significantly suppress benzo(a)pyrene-induced lung tumori.genesis by activating the Nrf2-HO-1/NQO-1 signaling pathway. J Exp Clin Canc Res. 2019;38:242.
[12] Inthi P, Pandith H, Kongtawelert P. Anti-cancer effect and active phytochemicals of Houttuynia cordata Thunb against human breast cancer cells. Asian Pac J Cancer Prev. 2023;24:1265–74.
[13] Chen YF, Yang JS, Chang WS, Tsai SC, Peng SF, Zhou YR. Houttuynia cordata Thunb extract modulates G0/G1 arrest and Fas/CD95-mediated death receptor apoptotic cell death in human lung cancer A549 cells. J Biomed Sci. 2013;20:18.
[14] Yin Y, Wang D, Wu D, He W, Zuo M, Zhu W, Xu Y, Wang L. Two new 4-Hydroxy-2-pyridone alkaloids with antimicrobial and cytotoxic activities from Arthrinium sp. GZWMJZ-606 endophytic with Houttuynia cordata Thunb. Molecules. 2023;28:2192.
[15] Fu P, Legako A, La S, MacMillan JB. Discovery, characterization, and analogue synthesis of bohemamine dimers generated by non-enzymatic biosynthesis. Chem Eur J. 2016;22:3491–5.
[16] Zhang R, Yan X, Yin S, Wang W, Zhu W, Fu P. Discovery of new bohemamines and synthesis of methylene-bridged chimeric derivatives through natural product chimera strategy. Chin J Chem. 2022;40:1413–21.
[17] Jiang B, Zhao W, Li S, Liu H, Yu L, Zhang Y, He H, Wu L. Cytotoxic dibohemamines D-F from a Streptomyces Species. J Nat Prod. 2017;80:2825–9.
[18] Bugni TS, Woolery M, Kauffman CA, Jensen PR, Fenical W. Bohemamines from a marine-derived Streptomyces sp. J Nat Prod. 2006;69:1626–8.
[19] Ueda JY, Hashimoto J, Nagai A, Nakashima T, Komaki H, Anzai K, Harayama S, Doi T, Takahashi T, Nagasawa K, Natsume T, Takagi M, Shin-ya K. New aureothin derivative, alloaureothin, from Streptomyces sp MM23. J Antibiot (Tokyo). 2007;60:321–4.
[20] Wang L, He W, Wang X, Li G, Wang D, Xu Y, Zhu W. Asteriquinones from Aspergillus sp. GZWMJZ-258 and their derivatives. J Nat Prod. 2023;86:2522–8.
