Plasma Membrane Proteomic Profile Discovers Macrophage-capping Protein Related to Latent HIV-1.

Abstract:

BACKGROUND:Due to the persistence of latent HIV-infected cellular reservoirs, HIV virus can not be eradicated completely. OBJECTIVE:To identify proteins related to HIV latency, we performed a subcellular proteomic study in HIV latent cell lines. METHODS:An established HIV-1 latent cell model (J-Lat Tat-GFP Clone A7 cells, A7 cells) and its parental cell line (Jurkat cells) were used. The plasma membrane (PM) fraction from cultured cells was enriched through aqueous two-phase partition. PM proteins were extracted and then separated using two-dimensional electrophoresis (2DE). Differentially expressed proteins were identified by mass spectrometry, and verified by western blotting. RESULTS:Thirteen non-redundant proteins were identified to be differentially expressed in the A7 PM fraction compared to those in the Jurkat PM. Eight had a PM location through Gene Ontology (GO) analysis. A differential protein network of CAPG-ACTR3-CD3D was detected to have interactions with HIV Vpr, Tat, gp160, etc. through STRING software analysis. One of the differential proteins (Macrophage-capping protein (CAPG)) was verified by western blotting to be down- regulated in two cell lines and HIV resting CD4+ T cells negatively selected from patients. CONCLUSION:We identified 13 proteins in A7 compared to Jurkat cells. CAPG may be a potential biomarker related to HIV latency.

journal_name

Curr HIV Res

journal_title

Current HIV research

authors

Zhang Y,Shen Y,Yin L,Qi T,Jia X,Lu H,Zhang L

doi

10.2174/1570162X17666190506155222

subject

Has Abstract

pub_date

2019-01-01 00:00:00

pages

42-52

issue

1

eissn

1570-162X

issn

1873-4251

pii

CHR-EPUB-98388

journal_volume

17

pub_type

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