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CD98hc in host-pathogen interactions: roles of the multifunctional host protein during infections

期刊

FEMS MICROBIOLOGY REVIEWS
卷 46, 期 5, 页码 -

出版社

OXFORD UNIV PRESS
DOI: 10.1093/femsre/fuac023

关键词

CD98hc; SLC3A2; xCT; LAT1; CD147; amino acid transport; infection

资金

  1. University of Montpellier
  2. Institut National de la Sante et de la Recherche Medicale (INSERM)
  3. French Minister of Higher Education, Research and Innovation (MERSI)

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CD98hc is a crucial host protein that plays a key role in the pathogenesis of infectious diseases. It can form amino acid transporters by associating with different light chains, and it is involved in mediating bacterial, apicomplexan, and viral infections.
Multiple molecular functions rely on the host protein CD98hc and its associated light chains; these functions are exploited by numerous viruses, bacteria, or parasites, thus playing central roles in host-pathogen interactions during pathogenesis. The eukaryotic protein CD98hc (also known as 4F2, FRP-1, or SLC3A2) is a membrane glycoprotein and one of the heavy chains of the family of heterodimeric amino acids transporters. It can associate with any of 6 different light chains to form distinct amino acid transporters. CD98hc is also involved in mediation of intracellular integrin signaling. Besides its physiological roles in the development of the placenta and the immune system, CD98hc is important during pathological processes such as tumorigenesis and host-pathogen interaction. Since its first identification as Fusion Regulatory Protein 1 regulating cell fusion in cells infected by the Newcastle disease virus, CD98hc has been reported to be mediating many viral, apicomplexan, and bacterial infectious processes. In this review we describe the role of CD98hc and its associated light chains in bacterial, apicomplexan, and viral pathogenesis. We also discuss the consequences of infection on the expression and localization of these proteins. The identification of the cellular processes in which CD98hc is involved during pathogenesis highlights the key role of this host protein in infectious diseases.

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