Investigate B cell perturbations and immune reconstitution failure in response to antiretroviral therapy in HIV-infected cocaine users

调查感染 HIV 的可卡因使用者抗逆转录病毒治疗导致的 B 细胞扰动和免疫重建失败

• 批准号: 10547870
• 负责人: Wei Jiang
• 金额: $ 15.1万
• 依托单位: MEDICAL UNIVERSITY OF SOUTH CAROLINA
• 依托单位国家: 美国
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-08-15 至 2024-07-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/10547870
• 关键词: Acquired Immunodeficiency Syndrome; Aminorex; Antibodies; Area; Autoantibodies; Autoimmune Diseases; Award; B-Lymphocytes; Binding; Blood; CD4 Positive T Lymphocytes; CD8-Positive T-Lymphocytes; Cardiovascular Diseases; Cell Count; Cell Death; Cell physiology; Cells; Chronic; Clinic; Clinical; Cocaine; Cocaine Users; Cryopreservation; Data Set; Disease; Disease Progression; Drug usage; Epitopes; Failure; Fibrosis; Flow Cytometry; Funding; Genes; Goals; HIV; HIV Infections; HIV therapy; Harm Reduction; Hospitalization; Immunoglobulin G; Immunologics; Infection; Inflammation; Investigation; Levamisole; Lymphatic; Mediating; Medical; Molecular; Monoclonal Antibodies; Morbidity - disease rate; National Institute of Drug Abuse; Pathogenesis; Pathogenicity; Patient Care; Patients; Peripheral; Peripheral Blood Mononuclear Cell; Persons; Pharmaceutical Preparations; Plasma; Play; Population; Production; Prothrombin; Public Health; Publishing; Recovery; Reporting; Research; Resources; Role; Sampling; Science; South Carolina; Substance Use Disorder; T-Cell Depletion; Testing; Therapeutic; Thymus Gland; Time; Universities; Urine; Viral; Work; advanced disease; antibody-dependent cell cytotoxicity; antiretroviral therapy; autoreactive B cell; cocaine use; cost; drug of abuse; genetic signature; high risk; immune activation; immune reconstitution; improved; inhibitor; mortality; prevent; recruit; response; test strip

PROJECT SUMMARY/ABSTRACT In HIV infection, circulating CD4+ T cell counts predict disease progression. Among infected subjects, up to 25% of antiretroviral therapy (ART)-treated people with HIV (PWH) (~111,000 people) fail to restore their peripheral CD4+ T cell counts to the levels of healthy controls, and increased morbidity and mortality have been demonstrated in these patients with immune reconstitution failure. Substance use disorders are common among people who are HIV infected, and drug of abuse is associated with poor CD4+ T cell recovery in patients on viral- suppressive ART. In this study, we will investigate how cocaine impacts on autoreactive B cell functions. We are the first group to report that anti-CD4 autoantibodies mediate CD4+ T cell death via antibody-mediated cytotoxicity (ADCC) and contribute to poor CD4+ T cell recovery under suppressive ART. Previous studies indicate that cocaine or levamisole-tainted cocaine (69% of cocaine is contaminated with levamisole) is able to induce autoantibodies and clinical presentations of autoimmune diseases. Thus, we hypothesize that cocaine or levamisole-tainted cocaine activates autoreactive B cells and promotes anti-CD4 autoantibody production in PWH. Our goal is to improve CD4+ T cell recovery and reduce mortality and morbidity in HIV+ cocaine users on suppressive ART. AIM 1: Determine the association of levamisole-tainted cocaine use and plasma anti-CD4 IgG levels in HIV+ cocaine users on suppressive ART. AIM 2: Characterize anti-CD4 IgG-producing single B cell gene “signature” in HIV+ levamisole-tainted cocaine users on suppressive ART.

项目总结/文摘