PGRN protects against colitis progression in mice in an IL-10 and TNFR2 dependent manner

Sci Rep. 2014 Nov 12:4:7023. doi: 10.1038/srep07023.

Abstract

This study was aimed to determine the role and regulation of progranulin (PGRN) in the pathogenesis of inflammatory bowel diseases (IBD). Dextran sulfate sodium (DSS)-, picrylsulfonic acid (TNBS)-induced, bone marrow chimera and CD4+CD45Rb(hi) T cell transfer colitis model were established and analyzed in wild-type and several genetically-modified mice, including PGRN, IL-10 and TNFR2 deficient mice. Elevated levels of PGRN were found in colitis samples from human IBD patients and mouse colitis models in comparison to the corresponding controls. PGRN-deficient mice became highly susceptible to DSS- and TNBS-induced colitis, whereas recombinant PGRN ameliorated the pathology and reduced the histological score in both DSS and TNBS colitis models. In addition, hematopoietic-derived PGRN was critical for protection against DSS-induced colitis, and lack of PGRN signaling in CD4+ T cells also exacerbated experimental colitis. PGRN-mediated protective effect in colitis was compromised in the absence of IL-10 signaling. In addition, PGRN's effect was also largely lost in the TNFR2-deficient colitis model. Collectively, these findings not only provide the new insight into PGRN's anti-inflammatory action in vivo, but may also present PGRN and its derivatives as novel biological agent for treating IBD.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Anti-Inflammatory Agents, Non-Steroidal / metabolism
  • Anti-Inflammatory Agents, Non-Steroidal / pharmacology*
  • Bone Marrow / immunology
  • Bone Marrow / pathology
  • CD4-Positive T-Lymphocytes / immunology
  • CD4-Positive T-Lymphocytes / metabolism
  • CD4-Positive T-Lymphocytes / pathology
  • Dextran Sulfate
  • Disease Models, Animal
  • Disease Progression
  • Gene Expression Regulation
  • Granulins
  • Humans
  • Inflammatory Bowel Diseases / chemically induced
  • Inflammatory Bowel Diseases / drug therapy
  • Inflammatory Bowel Diseases / genetics*
  • Inflammatory Bowel Diseases / pathology
  • Intercellular Signaling Peptides and Proteins / deficiency
  • Intercellular Signaling Peptides and Proteins / genetics*
  • Intercellular Signaling Peptides and Proteins / pharmacology
  • Interleukin-10 / deficiency
  • Interleukin-10 / genetics*
  • Mice
  • Mice, Knockout
  • Progranulins
  • Receptors, Tumor Necrosis Factor, Type II / deficiency
  • Receptors, Tumor Necrosis Factor, Type II / genetics*
  • Recombinant Proteins / genetics
  • Recombinant Proteins / metabolism
  • Recombinant Proteins / pharmacology
  • Signal Transduction
  • Transplantation Chimera
  • Trinitrobenzenesulfonic Acid

Substances

  • Anti-Inflammatory Agents, Non-Steroidal
  • Granulins
  • Grn protein, mouse
  • IL10 protein, mouse
  • Intercellular Signaling Peptides and Proteins
  • Progranulins
  • Receptors, Tumor Necrosis Factor, Type II
  • Recombinant Proteins
  • Interleukin-10
  • Trinitrobenzenesulfonic Acid
  • Dextran Sulfate