Abstract 4926: Gut microbiota regulates cisplatin mediated cachexia and systemic toxicity

Chemotherapy induced toxicity severely affect the cancer survivors and lowers the quality of life. By 2020, there will be more than 18 million of cancer survivors all over the world. Majority of them might develop long term nephrotoxicity, ototoxicity and gut toxicity. In addition, chemotherapy may also facilitate the initiation and progression of cachexia. Recent studies have shown that gut microbiota modulates the efficacy of anti-cancer chemotherapy, however very limited knowledge is available regarding the role of gut microbiota in regulating systemic toxicity and cachexia. We hypothesized that gut microbiota modulates cisplatin induced systemic toxicity as well as cachexia. Four groups (n=10 in each group) of 6-8 weeks old C57B/6 mice were treated with cisplatin, cisplatin+antibiotics cocktails (ABX), ABX only and control. ABX cocktail contained primaxin, vancomycin and neomycin. This experiment was validated using C57B/6 germ free mice. We performed anti-p-γ-H2AX based toxicity assay for DNA damage. In addition, we performed immunohistochemistry for studying cachexia. HE 2017 Apr 1-5; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2017;77(13 Suppl):Abstract nr 4926. doi:10.1158/1538-7445.AM2017-4926