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Title: High circulating SDF-1and MCP-1 levels and genetic variations in CXCL12, CCL2 and CCR5: Prognostic signature of immune recovery status in treated HIV-positive patients
Author: Yeregui, Elena
Viladés, Consuelo
Domingo, Pere (Domingo Pedrol)
Ceausu, Andrea
Pacheco, Yolanda María
Veloso, Sergi
Inciarte, Alexy
Vidal Gonzalez, Judit
Peraire, María
Perpiñán, Carles
Falcó, Vicenç
Masip, Jenifer
Alba, Verónica
Vargas, Montserrat
Martí, Anna
Reverté, Laia
Mallolas Masferrer, Josep
Vidal, Francesc
Peraire, Joaquim
Rull, Anna
Keywords: VIH (Virus)
Polimorfisme genètic
HIV (Viruses)
Genetic polymorphisms
Issue Date: 1-Dec-2020
Publisher: Elsevier
Abstract: Background: The underlying mechanisms of incomplete immune reconstitution in treated HIV-positive patients are very complex and may be multifactorial, but perturbation of chemokine secretion could play a key role in CD4+ T-cell turnover. Methods: We evaluated the circulating baseline and 48-week follow-up concentrations of SDF-1/CXCL12, fractalkine/CX3CL1, MCP-1/CCL2, MIP-α/CCL3, MIP-β/CCL4 and RANTES/CCL5, and we estimated their association with CXCL12, CX3CR1, CCR2, CCL5 and CCR5 single nucleotide polymorphisms (SNPs) to investigate multiple chemokine-chemokine receptor signatures associated with immune dysregulation preceding poor immune recovery. Findings: The circulating concentrations and gene expression patterns of SDF-1/CXCL12 (CXCL12 rs1801157) and MCP-1/CCL2 (CCR2 rs1799864_814) were associated with immune recovery status. CCR2 rs1799864_814 and CCR5 rs333_814 (Δ32) determine the baseline plasma RANTES and MIP-α concentrations, respectively, in participants with poor immune response. Interpretation: SDF-1/CXCL12 and MCP-1/CCL2 could be considered prognostic markers of immune failure despite suppressive antiretroviral therapy. The strong linkage disequilibrium (LD) between CCR2 rs1799864_814 and CCR5 rs1800024 indicated that the alleles of each gene are inherited together more often than would be expected by chance. Funding: This work was supported by Fondo de Investigacion Sanitaria and SPANISH AIDS Research Network (ISCIII-FEDER); AGAUR and Gilead Fellowship. FV and YMP are supported by grants from the Programa de Intensificación (ISCIII) and Servicio Andaluz de Salud, respectively. JVG,EY and LR are supported by the Instituto de Salud Carlos III (ISCIII). AR is supported by Departament de Salut, Generalitat de Catalunya and by the Instituto de Salud Carlos III (ISCIII).
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It is part of: EBioMedicine, 2020, vol. 62, p. 103077
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ISSN: 2352-3964
Appears in Collections:Articles publicats en revistes (Medicina)

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