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Marietta E, Horwath I, Meyer S, Khaleghi-Rostamkolaei S, Norman E, Luckey D, Balakrishnan B, Mangalam A, Choung RS, Taneja V, Murray JA. Administration of Human Derived Upper gut Commensal Prevotella histicola delays the onset of type 1 diabetes in NOD mice. BMC Microbiol 2022; 22:8. [PMID: 34983374 PMCID: PMC8729070 DOI: 10.1186/s12866-021-02406-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Accepted: 12/01/2021] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Type 1 diabetes (T1D) is an autoimmune disease that is increasing in prevalence worldwide. One of the contributing factors to the pathogenesis of T1D is the composition of the intestinal microbiota, as has been demonstrated. in T1D patients, with some studies demonstrating a deficiency in their levels of Prevotella. We have isolated a strain of Prevotella histicola from a duodenal biopsy that has anti-inflammatory properties, and in addition, alters the development of autoimmune diseases in mouse models. Therefore, our hypothesis is that the oral administration of P. histicola might delay the development of T1D in the non-obese diabetic (NOD) mice. To assess this, we used the following materials and methods. Female NOD mice (ages 5-8 weeks) were administered every other day P. histicola that was cultured in-house. Blood glucose levels were measured every other week. Mice were sacrificed at various time points for histopathological analysis of the pancreas. Modulation of immune response by the commensal was tested by analyzing regulatory T-cells and NKp46+ cells using flow cytometry and intestinal cytokine mRNA transcript levels using quantitative RT-PCR. For microbial composition, 16 s rRNA gene analysis was conducted on stool samples collected at various time points. RESULTS Administration of P. histicola in NOD mice delayed the onset of T1D. Beta diversity in the fecal microbiomes demonstrated that the microbial composition of the mice administered P. histicola was different from those that were not treated. Treatment with P. histicola led to a significant increase in regulatory T cells with a concomitant decrease in NKp46+ cells in the pancreatic lymph nodes as compared to the untreated group after 5 weeks of treatment. CONCLUSIONS These observations suggest that P. histicola treatment delayed onset of diabetes by increasing the levels of regulatory T cells in the pancreatic lymph nodes. This preliminary work supports the rationale that enteral exposure to a non pathogenic commensal P. histicola be tested as a future therapy for T1D.
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Affiliation(s)
- Eric Marietta
- grid.66875.3a0000 0004 0459 167XDepartment of Gastroenterology and Hepatology (Celiac Disease), Mayo Clinic, Rochester, MN USA ,grid.66875.3a0000 0004 0459 167XDepartment of Immunology, Mayo Clinic, Rochester, MN USA ,grid.66875.3a0000 0004 0459 167XDepartment of Dermatology, Mayo Clinic, Rochester, MN USA
| | - Irina Horwath
- grid.66875.3a0000 0004 0459 167XDepartment of Gastroenterology and Hepatology (Celiac Disease), Mayo Clinic, Rochester, MN USA
| | - Stephanie Meyer
- grid.66875.3a0000 0004 0459 167XDepartment of Gastroenterology and Hepatology (Celiac Disease), Mayo Clinic, Rochester, MN USA
| | - Shahryar Khaleghi-Rostamkolaei
- grid.66875.3a0000 0004 0459 167XDepartment of Gastroenterology and Hepatology (Celiac Disease), Mayo Clinic, Rochester, MN USA
| | - Eric Norman
- grid.66875.3a0000 0004 0459 167XDepartment of Gastroenterology and Hepatology (Celiac Disease), Mayo Clinic, Rochester, MN USA
| | - David Luckey
- grid.66875.3a0000 0004 0459 167XDepartment of Immunology, Mayo Clinic, Rochester, MN USA
| | - Baskar Balakrishnan
- grid.66875.3a0000 0004 0459 167XDepartment of Immunology, Mayo Clinic, Rochester, MN USA
| | - Ashutosh Mangalam
- grid.214572.70000 0004 1936 8294Department of Immunology, University of Iowa, Iowa City, Iowa USA
| | - Rok Seon Choung
- grid.66875.3a0000 0004 0459 167XDepartment of Gastroenterology and Hepatology (Celiac Disease), Mayo Clinic, Rochester, MN USA
| | - Veena Taneja
- grid.66875.3a0000 0004 0459 167XDepartment of Immunology, Mayo Clinic, Rochester, MN USA
| | - Joseph A. Murray
- grid.66875.3a0000 0004 0459 167XDepartment of Gastroenterology and Hepatology (Celiac Disease), Mayo Clinic, Rochester, MN USA ,grid.66875.3a0000 0004 0459 167XDepartment of Immunology, Mayo Clinic, Rochester, MN USA
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