Journal of Microbiology

Journal Article

1Medical Convergence Materials Commercialization Center, Gyeongsan: JaeJin An , Eun-Mi Ha; J. Microbiol. 2020;58(11):967-977. Published online October 30, 2020; DOI: https://doi.org/10.1007/s12275-020-0375-y

Abstract: Lactobacillus plantarum-derived metabolites (LDMs) increase drug sensitivity to 5-FU and antimetastatic effects in 5-FUresistant colorectal cancer cells (HCT-116/5FUR). In this study, we evaluated the effects of LDMs on the regulation of genes and proteins involved in HCT-116/5-FUR cell proliferation and metastasis. HCT-116/5-FUR cells showed high metastatic potential, significantly reduced tight junction (TJ) integrity, including increased migration and paracellular permeability, and upregulation of claudin-1 (CLDN-1). The genetic silencing of CLDN-1 increased the sensitivity of HCT- 116/5FUR to 5-FU and inhibited its metastatic potential by regulating the expression of epithelial-mesenchymal transition (EMT) related genes. Co-treatment of HCT-116/5FUR with LDMs and 5-FU suppressed chemoresistant and metastatic behavior by downregulating CLDN-1 expression. Finally, we designed LDMs-based therapeutic strategies to treatment for metastatic 5-FU-resistant colorectal cancer cells. These
results
suggested that LDMs and 5-FU cotreatments can synergistically target 5-FU-resistant cells, making it a candidate strategy to overcome 5-FU chemoresistance improve anticancer drug efficacy.

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