This is a R21 application in response to RFA-DA-02-008. Injection drug users (IDUs) are the single largest risk group for hepatitis C virus (HCV) infection and the co-infections with human immunodeficiency virus (HIV) and HCV are frequently found in IDUs. These two pathogens are also likely to be responsible for the highest infectious disease morbidity and mortality rates among IDUs. The general aim of this study is to determine the role of opioids (e.g., morphine) in the immunopathogenesis of HCV disease in the presence or absence of HIV infection. We hypothesize that opioids, through their receptors on human hepatocytes and immune cells, modulates HCV infection and replication. We will use both in vitro and in vivo models to directly address the question whether opioids have the ability to enhance HCV infection and replication. We seek to understand how HCV and HIV modify each other's replication in both in vitro and in vivo systems. We propose four specific aims: 1) We will determine whether opioids such as morphine enhances HCV infection of and replication in primary human hepatocytes, hepatoma cell lines (HepG2, Huh-7) and T cell lines (MT-2 and MT-2C); 2) We will determine whether opioids have the ability to induce HCV RNA expression in HCV replicon containing human hepatoma cell lines (Huh.5 and Huh.8). We will also examine whether HCV has ability to infect chronically HIV infected human T and monocytic cell lines (ACH-2, J 1.1 and U 1); 3) We will determine whether the removal of CD8+ T cells from PBMCs, and opioids, when added to CD8+ T cell-depleted PBMC isolated from HCV and/or HIV-infected subjects, induce HCV replication. In addition, we will examine whether HIV induces HCV replication in PBMCs isolated from HCV/HIV coinfected subjects; 4) We will determine plasma and PBMC HCV RNA levels in HCV and/or HIV-infected subjects attending methadone program. We will directly measure the levels of HCV RNA in plasma and PBMC using our newly developed real time RT-PCR assay. The investigation of the impact of opioids on HCV infection and its interaction with HIV will contribute to our basic understanding of host defense processes and the role of drug abuse in HCV and/or HIV infection of human liver and immune cells, ultimately further the design and development of improved treatment for drug-abusing patients infected with HCV and/or HIV.

Agency
National Institute of Health (NIH)
Institute
National Institute on Drug Abuse (NIDA)
Type
Exploratory/Developmental Grants (R21)
Project #
1R21DA016022-01
Application #
6587539
Study Section
Special Emphasis Panel (ZDA1-RXL-E (07))
Program Officer
Sharp, Charles
Project Start
2002-09-27
Project End
2005-07-31
Budget Start
2002-09-27
Budget End
2003-07-31
Support Year
1
Fiscal Year
2002
Total Cost
$170,000
Indirect Cost
Name
Children's Hospital of Philadelphia
Department
Type
DUNS #
073757627
City
Philadelphia
State
PA
Country
United States
Zip Code
19104
Wang, Xu; Zhang, Ting; Ho, Wen-Zhe (2011) Opioids and HIV/HCV infection. J Neuroimmune Pharmacol 6:477-89
Li, Yuan; Ye, Li; Peng, Jin-Song et al. (2007) Morphine inhibits intrahepatic interferon- alpha expression and enhances complete hepatitis C virus replication. J Infect Dis 196:719-30
Zhang, Ting; Li, Yuan; Wang, Yan-Jian et al. (2007) Natural killer cell inhibits human immunodeficiency virus replication in chronically infected immune cells. Antiviral Res 73:132-9
Zhang, Ting; Li, Yuan; Ho, Wen-Zhe (2006) Drug abuse, innate immunity and hepatitis C virus. Rev Med Virol 16:311-27
Wang, Chuan-Qing; Li, Yuan; Douglas, Steven D et al. (2005) Morphine withdrawal enhances hepatitis C virus replicon expression. Am J Pathol 167:1333-40
Wang, Xu; Tan, Ning; Douglas, Steven D et al. (2005) Morphine inhibits CD8+ T cell-mediated, noncytolytic, anti-HIV activity in latently infected immune cells. J Leukoc Biol 78:772-6
Li, Yuan; Wang, Xu; Douglas, Steven D et al. (2005) CD8+ T cell depletion amplifies hepatitis C virus replication in peripheral blood mononuclear cells. J Infect Dis 192:1093-101
Zhang, Ting; Lin, Rong-Tuan; Li, Yuan et al. (2005) Hepatitis C virus inhibits intracellular interferon alpha expression in human hepatic cell lines. Hepatology 42:819-27
Zhang, Ting; Guo, Chang-Jiang; Douglas, Steven D et al. (2005) Alcohol suppresses IL-2-induced CC chemokine production by natural killer cells. Alcohol Clin Exp Res 29:1559-67
Guo, Chang-Jiang; Douglas, Steven D; Gao, Zhiyong et al. (2004) Interleukin-1beta upregulates functional expression of neurokinin-1 receptor (NK-1R) via NF-kappaB in astrocytes. Glia 48:259-66

Showing the most recent 10 out of 17 publications