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- W4296368509 abstract "Abstract With its antimicrobial and immunomodulating properties, the cathelicidin (LL37) plays an important role in innate immune system. Here, we attempted to alleviate chemically induced colitis using a lactococci strain that either directly expressed the precursor to LL37, hCAP18 (LL-pSEC:hCAP18), or delivered hCAP18 cDNA to host cells under the control of the cytomegalovirus promoter (LL-Probi-H1:hCAP18). We also investigated whether the alleviation of symptoms could be explained through modification of the gut microbiota by hCAP18. Mice were administered daily doses of LL-pSEC:hCAP18 or LL-Probi-H1:hCAP18. On day 7, colitis was induced by DNBS. During autopsy, we assessed macroscopic tissue damage in the colon and collected tissue samples for the characterization of inflammation markers and histological analysis. Feces were collected at day 7 for 16S DNA sequencing. We also performed a fecal transplant experiment in which mice underwent colon washing and received feces from Lactococcus lactis -treated mice before DNBS-colitis induction. Treatment with LL-Probi-H1:hCAP18 reduced the severity of colitis symptoms. The protective effects were accompanied by increased levels of IL17A and IL10 in mesenteric lymph node cells. L. lactis administration altered the abundance of Lachnospiraceae and Muribaculaceae . However, fecal transplant from L. lactis -treated mice did not improve DNBS-induced symptoms in recipient mice." @default.
- W4296368509 created "2022-09-20" @default.
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- W4296368509 date "2022-09-19" @default.
- W4296368509 modified "2023-10-18" @default.
- W4296368509 title "Lactococcus lactis engineered to deliver hCAP18 cDNA alleviates DNBS-induced colitis in C57BL/6 mice by promoting IL17A and IL10 cytokine expression" @default.
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- W4296368509 doi "https://doi.org/10.1038/s41598-022-19455-3" @default.
- W4296368509 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/36123355" @default.
- W4296368509 hasPublicationYear "2022" @default.
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