A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
Animal unit hygienic conditions influence mouse intestinal microbiota and contribute to T-cell-mediated colitis
Tekijät: Cazares-Olivera Mariana, Miroszewska Dominika, Hu Lili L, Kowalski Jacek, Jaakkola Ulla-Marjut, Salminen Seppo, Li B, Yatkin Emrah, Chen Zhi
Kustantaja: Sage Publications Ltd
Julkaisuvuosi: 2022
Journal: Experimental Biology and Medicine
Tietokannassa oleva lehden nimi: EXPERIMENTAL BIOLOGY AND MEDICINE
Lehden akronyymi: EXP BIOL MED
Vuosikerta: 247
Numero: 19
Aloitussivu: 1752
Lopetussivu: 1763
Sivujen määrä: 12
ISSN: 1535-3702
eISSN: 1535-3699
DOI: https://doi.org/10.1177/15353702221113826
Verkko-osoite: https://doi.org/10.1177/15353702221113826
Rinnakkaistallenteen osoite: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9638955/
Inflammatory bowel disease (IBD) is a group of chronic inflammatory disorders of the gastrointestinal tract with worldwide increasing incidence. Recent studies indicate that certain species of intestinal bacteria are strongly associated with IBD. Helper T lymphocytes are not only the key players in mediating host defense against a wide variety of pathogens but also contribute to pathogenesis of many immune-related diseases. Here, using the T cell transfer model of colitis, we observed that the mice maintained in a specific-pathogen free (SPF) unit after receiving naive CD4(+) T cells developed mild disease. The same mice developed different degrees of disease when they were maintained in a conventional animal facility (non-SPF), where some pathogens were detected during routine health monitoring. Consistently, increased circulating inflammatory cytokines as well as Th1 and Th17 cells were detected in mice housed in non-SPF units. 16S rRNA sequencing of feces samples enabled us to identify changes in the microbiota composition of mice kept in different facilities. Our data indicate that environmental factors influence gut microbiota composition of mice, leading to development of colitis in a T-cell-dependent manner. In conclusion, changes in environmental conditions and microbial status of experimental animals appear to contribute to progression of colitis.