title: Transcriptomic assay of CD8+ T cells in treatment-naïve HIV, HCV-mono-infected and HIV/HCV-co-infected Chinese.
abstract: BACKGROUND
  Co-infection with HIV and HCV is very common. It is estimated that over 5 million people are co-infected with HIV and HCV worldwide. Accumulated evidence shows that each virus alters the course of infection of the other one. CD8+ T cells play a crucial role in the eradication of viruses and infected target cells. To the best of our knowledge, no one has investigated the gene expression profiles in HIV/HCV-co-infected individuals.
  
  
  METHODS
  Genome-wide transcriptomes of CD8+ T cells from HIV/HCV-co-infected or mono-infected treatment-naïve individuals were analyzed by microarray assays. Pairwise comparisons were performed and differentially expressed genes were identified followed by quantitative real-time PCR (qRT-PCR) validation. Directed Acyclic Graphs (DAG) from Web-based Gene SeT AnaLysis Toolkit (WebGestalt) and DAVID bioinformatics resources 6.7 (the Database for Annotation, Visualization, and Integrated Discovery) were used to discover the Gene Ontology (GO) categories with significantly enriched gene numbers. The enriched Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways were also obtained by using WebGestalt software.
  
  
  CONCLUSIONS
  A total of 110, 24 and 72 transcript IDs were shown to be differentially expressed (> 2-fold and p<0.05) in comparisons between HCV- and HIV-mono-infected groups, HIV/HCV-co-infected and HIV-mono-infected groups, and HIV/HCV-co-infected and HCV-mono-infected groups, respectively. In qRT-PCR assay, most of the genes showed similar expressing profiles with the observation in microarray assays. Further analysis revealed that genes involved in cell proliferation, differentiation, transcriptional regulation and cytokine responses were significantly altered. These data offer new insights into HIV/HCV co-infections, and may help to identify new markers for the management and treatment of HIV/HCV co-infections.
authors.affiliation: Stanley Ho Center for Emerging Infectious Diseases, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China.
authors.forename: Jin
authors.initials: J
authors.lastname: Zhao
authors.forename: Lina
authors.initials: L
authors.lastname: Yi
authors.forename: Jing
authors.initials: J
authors.lastname: Lu
authors.forename: Zheng-Rong
authors.initials: ZR
authors.lastname: Yang
authors.forename: Ying
authors.initials: Y
authors.lastname: Chen
authors.forename: Chenli
authors.initials: C
authors.lastname: Zheng
authors.forename: Dan
authors.initials: D
authors.lastname: Huang
authors.forename: Yu-Feng
authors.initials: YF
authors.lastname: Li
authors.forename: Lin
authors.initials: L
authors.lastname: Chen
authors.forename: Jinquan
authors.initials: J
authors.lastname: Cheng
authors.forename: Hsiang-Fu
authors.initials: HF
authors.lastname: Kung
authors.forename: Ming-Liang
authors.initials: ML
authors.lastname: He
mesh_terms: D000328:Adult; D044466:Asian People; D018414:CD8-Positive T-Lymphocytes / Q000378:metabolism* / Q000473:pathology; D002454:Cell Differentiation / Q000235:genetics; D049109:Cell Proliferation; D060085:Coinfection; D016207:Cytokines / Q000235:genetics; D020869:Gene Expression Profiling; D005786:Gene Expression Regulation; D055106:Genome-Wide Association Study; D006678:HIV / Q000502:physiology; D015658:HIV Infections / Q000235:genetics* / Q000821:virology; D016174:Hepacivirus / Q000502:physiology; D006526:Hepatitis C / Q000235:genetics* / Q000821:virology; D006801:Humans; D008297:Male; D059467:Transcriptome
chemical_list: D016207:Cytokines