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Using a Bacterial Pathogen to Probe for Cellular and Organismic-level Host Responses
Published on: February 22, 2019
CD98hc in host-pathogen interactions: roles of the multifunctional host protein during infections
Sonia Vection1,2, David O'Callaghan1,2, Anne Keriel1,2
1VBIC, U1047 INSERM, Université de Montpellier, Nîmes, France.
Insights
The eukaryotic protein CD98hc (also known as SLC3A2) is crucial for various infections. This review details its role in bacterial, viral, and apicomplexan pathogenesis.
Area of Science:
- Cell Biology
- Immunology
- Infectious Diseases
Background:
- CD98hc (SLC3A2) is a membrane glycoprotein forming heterodimeric amino acid transporters.
- It plays roles in integrin signaling, immune development, and tumorigenesis.
- CD98hc is implicated in host-pathogen interactions.
Purpose of the Study:
- To review the role of CD98hc and its light chains in infectious diseases.
- To discuss the impact of infections on CD98hc expression and localization.
- To highlight CD98hc's significance in pathogenesis.
Main Methods:
- Literature review of studies on CD98hc in infectious diseases.
- Analysis of CD98hc's involvement in viral, bacterial, and apicomplexan pathogenesis.
- Examination of infection-induced changes in CD98hc expression and localization.
Main Results:
- CD98hc mediates numerous viral, apicomplexan, and bacterial infectious processes.
- Infections alter the expression and localization of CD98hc and its associated light chains.
- CD98hc is a key host factor in pathogen invasion and replication.
Conclusions:
- CD98hc is a critical host protein in infectious disease pathogenesis.
- Understanding CD98hc's functions offers insights into host-pathogen interactions.
- Targeting CD98hc may present therapeutic strategies against infections.
Abstract:
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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