Assays with Patient-Derived Organoids to Evaluate the Impact of Microbial Infection on Base Excision Repair (BER) Enzymes

Overview

Journal Methods Mol Biol

Specialty Molecular Biology

Date 2023 Aug 13

PMID 37574481

Authors

Ibrahim M Sayed

Anirban Chakraborty

Soumita Das

Affiliations

Soon will be listed here.

Abstract

Microbes play an important role in regulating cellular responses and the induction of chronic diseases. Infection and chronic inflammation can cause DNA damage, and the accumulation of mutations leads to cancer development. The well-known examples of cancer-associated microbes are Helicobacter pylori in gastric cancer and Fusobacterium nucleatum (Fn), Bacteroides fragilis, and E.coli NC101 in colorectal cancer (CRC). These carcinopathogens modify the expressions of the base excision repair enzymes and cause DNA damage. This chapter will show how Fn can initiate CRC through the downregulation of a critical enzyme of the base excision repair (BER) pathway that subsequently causes accumulation of DNA damage. We used the stem cell-based organoid model and enteroid-derived monolayer (EDM) from the murine and human colon to assess the impact of infection on the expression of BER enzymes on the transcriptional and translational levels and to develop other functional assays. For example, we used this EDM model to assess the inflammatory response, DNA damage response, and physiological responses, where we correlated the level of these parameters to BER enzyme levels.

Citing Articles

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PMID: 38498294 DOI: 10.1007/s12015-024-10708-4.

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