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Int J Mol Sci. 2018 Jan 7;19(1). pii: E174. doi: 10.3390/ijms19010174.

Chemical Characterization of a Renoprotective Metabolite from Termite-Associated Streptomyces sp. RB1 against Cisplatin-Induced Cytotoxicity.

Author information

1
School of Pharmacy, Sungkyunkwan University, Suwon 16419, Korea. pjsldh@naver.com.
2
College of Korean Medicine, Gachon University, Seongnam 13120, Korea. kkang@gachon.ac.kr.
3
Department of Food and Nutrition, Gachon University, Seongnam 13120, Korea. skysea@gachon.ac.kr.
4
School of Pharmacy, Sungkyunkwan University, Suwon 16419, Korea. khkim83@skku.edu.

Abstract

Platinum-based anticancer drug therapies can cause renal damage and apoptotic kidney cell damage. The development of reno- and kidney-protective molecules is therefore urgently required. To address this challenge, we explored secondary metabolites of termite-associated Streptomyces sp. RB1 isolated from the cuticle of the South African termite, Macrotermes natalensis for their renoprotective ability using bioassay-guided fractionation and LLC-PK1 cells. Chemical investigation of the MeOH extract of Streptomyces sp. RB1 resulted in the isolation and identification of a renoprotective metabolite, 1-O-(2-aminobenzoyl)-α-l-rhamnopyranoside (ABR) (1) from the active fraction, which ameliorated cisplatin-induced cytotoxicity to 80% of the control value at 25 μM. Upregulated phosphorylation of c-Jun N-terminal kinases (JNK) and p38 following cisplatin treatment was markedly decreased after pre-treatment of cells with ABR. In addition, levels of cleaved caspase-3 and the percentage of apoptotic cells were also significantly reduced after pre-treatment with ABR. These findings provide experimental evidence that blocking the MAPK signaling cascade plays a critical role in mediating the renoprotective effect of ABR, which may inspire the development of novel therapeutic substances to prevent anticancer drug-induced nephrotoxicity.

KEYWORDS:

">l-rhamnopyranoside; 1-O-(2-aminobenzoyl)-α-; LLC-PK1 cells; MAPKs; Streptomyces sp. RB1; nephrotoxicity; renoprotective effect

PMID:
29316657
PMCID:
PMC5796123
DOI:
10.3390/ijms19010174
[Indexed for MEDLINE]
Free PMC Article

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