Inflammation Research

, Volume 66, Issue 3, pp 209–216

The biological function and significance of CD74 in immune diseases

Review

DOI: 10.1007/s00011-016-0995-1

Cite this article as:
Su, H., Na, N., Zhang, X. et al. Inflamm. Res. (2017) 66: 209. doi:10.1007/s00011-016-0995-1

Abstract

CD74 (MHC class II invariant chain, Ii) is a non-polymorphic type II transmembrane glycoprotein. It is clear that, in addition to be an MHC class II chaperone, CD74 has a diversity of biological functions in physiological and pathological situations. CD74 also participates in other non-MHC II protein trafficking, such as angiotensin II type I receptor. In addition, CD74 is a cell membrane high-affinity receptor for macrophage migration inhibitory factor (MIF), D-dopachrome tautomerase (D-DT/MIF-2) and bacterial proteins. CD74 also regulates T-cell and B-cell developments, dendritic cell (DC) motility, macrophage inflammation, and thymic selection. The activation of receptor complex CD74/CD44 may lead to multiple intracellular signal pathways, such as the activation of the extracellular signal regulated kinase (ERK) 1 and 2, the PI3K-Akt signal transduction cascade, NFκB, and the AMP-activated protein kinase (AMPK) pathway. CD74 plays important roles in many inflammatory diseases, such as liver fibrosis, type I diabetes, systemic lupus erythematosus, and Alzheimer disease. In this study, we will focus on the immunological functions of CD74 molecules and its roles in immune-relevant disorders.

Keywords

CD74 MIF Inflammation Innate immunity 

Copyright information

© Springer International Publishing 2016

Authors and Affiliations

  1. 1.Transplantation Biology Research Division, State Key Laboratory of Membrane Biology, Institute of ZoologyChinese Academy of SciencesBeijingChina
  2. 2.University of Chinese Academy of SciencesBeijingChina
  3. 3.Department of Kidney TransplantationThe Third Affiliated Hospital of Sun Yat-sen UniversityGuangzhouChina
  4. 4.Department of Urology, Beijing Chaoyang HospitalCapital Medical UniversityBeijingChina