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B-Cell Commitment to IL-10 Production: The VertX Il10egfp Mouse

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Part of the Methods in Molecular Biology book series (MIMB, volume 2270)

Abstract

Although the inflammatory cytokine IL-10 is pivotal in regulatory B-cell function, detecting IL-10-producing B cells by intracellular IL-10 staining requires multiple steps and tedious preparation. In contrast, the Il10-eGFP reporter mouse model (VertX), generated in 2009, allows easier and quicker detection of IL-10-producing B cells with the possibility of sorting viable cells without membrane permeabilization and ex vivo activation. Even though detecting IL-10+ cells is simpler, several nuances are important. For example, methanol-containing buffers delete GFP signal, while long-term fixation can maintain GFP intensity but decreases other intracellular signals (FOXP3, etc.). Here, we provide optimized and improved protocols for GFP detection in intestinal B cells and isolation techniques of lamina propria, spleen, mesenteric lymph node, peritoneum, and blood cells from VertX mice.

Key words

Regulatory B cell Interleukin-10 GFP Mucosal immunology Flow cytometry Microbiota Gnotobiotic mice 

Notes

Acknowledgments

We thank Dr. C.L. Karp for providing VertX mice and Dr. B. Vanhaesebroeck for providing PI3KδD910A mice. The authors are supported by grants from National Institute of Health (P01DK094779; P30DK034987; P40OD010995) and Crohn’s & Colitis Foundation Research Fellowship Award (407007) and Gnotobiotic Facility. The UNC Flow Cytometry Core Facility is supported in part by P30CA016086 Cancer Center Core Support Grant to the UNC Lineberger Comprehensive Cancer Center. The flow cytometry research reported in this publication was supported in part by the North Carolina Biotech Center Institutional Support Grant 2012-IDG-1006.

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© Springer Science+Business Media, LLC, part of Springer Nature 2021

Authors and Affiliations

  1. 1.Center for Gastrointestinal Biology and Disease, Department of Medicine, Division of Gastroenterology and HepatologyUniversity of North Carolina at Chapel HillChapel HillUSA
  2. 2.Department of Internal Medicine IIShimane University Faculty of MedicineIzumoJapan
  3. 3.Department of Microbiology and ImmunologyUniversity of North Carolina at Chapel HillChapel HillUSA
  4. 4.National Gnotobiotic Rodent Resource CenterUniversity of North Carolina at Chapel HillChapel HillUSA

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