CHARACTERIZATION OF AFE INHIBITORS IN HUMAN CERVICAL/REC

人类宫颈/REC 中 AFE 抑制剂的表征

• 批准号: 6955348
• 负责人: ROBIN J SHATTOCK
• 金额: $ 22.99万
• 依托单位: WEILL MEDICAL COLL OF CORNELL UNIV
• 依托单位国家: 美国
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-08-01 至 2008-07-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6955348
• 关键词: AIDS education /prevention; HIV infections; antiAIDS agent; antiviral agents; cervix; chemokine receptor; chemoprevention; clinical research; dendritic cells; dosage forms; drug screening /evaluation; helper T lymphocyte; human tissue; local antiinfective agents; mucosa; rectum /anus; sexually transmitted diseases; tissue /cell culture; topical drug application; virus infection mechanism

The leader of Research Project I (assessment of AFE inhibitors in human mucosal explants) will be Robin Shattock, PhD. The project will be located at St George's Hospital Medical School, London, UK, where Dr. Shattock and colleagues have pioneered the culture of mucosal tissue explants (cervical, vaginal, rectal and penile). The human cervical tissue explant model has been successfully used to glean useful new information on the biological processes that may be involved in the sexual transmission of HIV--1. Cells present within cervical and rectal tissue explants, established directly after surgery, represent the immune population first exposed to HIV-1 during sexual transmission in terms of phenotype (e.g., co-receptor expression), state of activation and anatomical location. Thus the model system used by Dr. Shattock most directly reflects what happens during mucosal challenge of humans by an incoming virus. It is a promising tool in any mechanism-based approach to rational microbicide design. Thus we will evaluate AFE inhibitors, provided by the Research Support Core, that target HIV-1 interactions with CD4, CLR or CCR, or that impact on virus uptake and dissemination by migratory dendritic cells. The purpose of these studies is to: evaluate AFE inhibitor combinations for their activity against a diverse set of primary HIV-1 isolates from multiple genetic subtypes, including viruses from countries where the male-to-female spread of HIV-1 is particularly common; define the activity of inhibitors under physiologically relevant conditions (pH 4-8, in the presence of semen or blood); identify potential toxic or inflammatory effects in human tissues and cells; determine whether the formulation of different AFE inhibitors impairs their antiviral activity, or increases their toxicity. The specific questions being considered are: Do AFE inhibitors and combinations influence mucosal HIV-1 infection of cervical and rectal explants? Which AFE inhibitors or combinations are most effective at inhibiting both localized HIV-1 infection and migratory cell dissemination of virus from mucosal tissue? Do AFE inhibitors, combination and formulations show acceptable tissue compatibility in explant models? Which formulation characteristics provide effective drug penetration without enhancement of HIV-1 infection? This kind of study, together with our overall knowledge of the virus-cell entry processes and animal models, will facilitate the rational selection of potential AFE inhibitor combinations for primate studies, then human clinical trials.

研究项目I（评估人类粘膜外植体中的AFE抑制剂）的负责人将是Robin Shattock博士。该项目将设在英国伦敦的St乔治医院医学院，Shattock博士及其同事在那里开创了粘膜组织外植体（宫颈、阴道、直肠和阴茎）的培养。人类宫颈组织移植模型已成功地用于收集有关HIV-1性传播可能涉及的生物过程的有用的新信息。手术后直接建立的宫颈和直肠组织外植体内存在的细胞代表性传播期间首先暴露于HIV-1的免疫群体的表型（例如，共受体表达）， 激活和解剖位置。因此，Shattock博士使用的模型系统最直接地反映了传入病毒对人类粘膜的攻击过程中发生的情况。它是一个有前途的工具，在任何基于机制的方法，合理的杀微生物剂的设计。因此，我们将评估由研究支持核心提供的AFE抑制剂，这些抑制剂靶向HIV-1与CD 4、CD 4+或CCR的相互作用，或影响迁移性树突状细胞对病毒的摄取和传播。这些研究的目的是：评价AFE抑制剂组合对多种基因亚型的多种原发性HIV-1分离株的活性，包括来自HIV-1男性向女性传播特别常见的国家的病毒;定义 在生理相关条件下（pH 4-8，在精液或血液存在下）抑制剂的活性;鉴定人体组织和细胞中潜在的毒性或炎症作用;确定不同AFE抑制剂的制剂是否损害其抗病毒活性或增加其毒性。正在考虑的具体问题是：AFE抑制剂和组合是否影响宫颈和直肠移植物的粘膜HIV-1感染？哪些AFE抑制剂或组合在抑制局部HIV-1感染和粘膜组织中病毒的迁移性细胞传播方面最有效？AFE抑制剂、组合和制剂在外植体模型中是否显示出可接受的组织相容性？所述制剂 特征提供有效的药物渗透而不增强HIV-1感染？这种研究，加上我们对病毒细胞进入过程和动物模型的全面了解，将有助于合理选择潜在的AFE抑制剂组合用于灵长类动物研究，然后是人类临床试验。