Maggot Extracts Chemo-prevent Inflammation and Tumorigenesis Accompanied by Changes in the Intestinal Microbiome and Metabolome in AOM/DSS-induced Mice

Overview

Journal Front Microbiol

Specialty Microbiology

Date 2023 May 18

PMID 37200915

Authors

Xun Tang

Lei Wang

Daojuan Wang

Yi Zhang

Tingyu Wang

Zhengquan Zhu

Yajing Weng

Gaojian Tao

Qin Wang

Li Tang

Feng Yan

Yong Wang

Affiliations

Soon will be listed here.

Abstract

Inflammatory responses and intestinal microbiome play a crucial role in the progression of colitis-associated carcinoma (CAC). The traditional Chinese medicine maggot has been widely known owing to its clinical application and anti-inflammatory function. In this study, we investigated the preventive effects of maggot extract (ME) by intragastric administration prior to azoxymethane (AOM) and dextran sulfate sodium (DSS)-induced CAC in mice. The results showed that ME had superior advantages in ameliorating disease activity index score and inflammatory phenotype, in comparison with the AOM/DSS group. The number and size of polypoid colonic tumors were decreased after pre-administration of ME. In addition, ME was found to reverse the downregulation of tight junction proteins (zonula occluden-1 and occluding) while suppressing the levels of inflammatory factors (IL-1β and IL-6) in models. Moreover, Toll-like receptor 4 (TLR4) mediated intracellular nuclear factor-κB (NF-κB)-containing signaling cascades, including inducible nitric oxide synthase and cyclooxygenase-2, and exhibited decreasing expression in the mice model after ME pre-administration. 16s rRNA analysis and untargeted-metabolomics profiling of fecal samples inferred that ME revealed ideal prevention of intestinal dysbiosis in CAC mice, accompanied by and correlated with alterations in the composition of metabolites. Overall, ME pre-administration might be a chemo-preventive candidate in the initiation and development of CAC.

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