- ICH GCP
- Registro de ensayos clínicos de EE. UU.
- Ensayo clínico NCT00068978
Analysis of Immune Responses to HIV Vaccines
Flow Cytometry Study of T Cell Responses to HIV Vaccines
Descripción general del estudio
Estado
Descripción detallada
Assays for HIV-specific human CD4 and CD8 T cell immunity are needed in order to evaluate the immune response to HIV vaccines. Such assays should be robust, reproducible, and amenable to high throughput analysis of clinical specimens. Cytokine flow cytometry (CFC) assays can reliably and specifically detect human CD4 and CD8 T cell responses to AIDS-related opportunistic infections, including those caused by cytomegalovirus, Mycobacterium tuberculosis, the Mycobacterium avium complex, cryptococcus, and human papillomavirus. The purpose of this study is to devise and evaluate a similar CFC assay for the detection and quantitation of CD4 and CD8 T cell responses against HIV.
This study will evaluate a "Gag-IFNg CFC" assay by comparing the results of this assay with results from other assays of immune phenotype and function in long-term nonprogressors, untreated patients with progressive HIV disease, and recipients of candidate HIV vaccines. The study will also examine HIV-specific immune responses in HIV infected individuals who appear to exhibit significant immune protection from HIV disease.
Participants in this study will be drawn from other studies currently underway. As a part of those studies, participants will have regular blood tests. Blood samples from those studies will be used in this study. No participants will be directly enrolled in this study.
Tipo de estudio
Inscripción
Contactos y Ubicaciones
Ubicaciones de estudio
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California
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San Francisco, California, Estados Unidos, 94103
- Core Immunology Laboratory
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Criterios de participación
Criterio de elegibilidad
Edades elegibles para estudiar
- Niño
- Adulto
- Adulto Mayor
Acepta Voluntarios Saludables
Géneros elegibles para el estudio
Descripción
Blood samples from 5 cohorts of HIV infected individuals and 2 cohorts of HIV uninfected individuals will be evaluated.
Varying stages of HIV disease are represented in these cohorts, including:
- Individuals who have been exposed but who have not seroconverted
- Individuals who have recently seroconverted
- HAART-treated patients who receive immune modulators such as IL-2 and therapeutic immunization
- HAART-treated patients who undergo structured treatment interruptions
- HAART-treated patients who have durable suppression of viremia
- HAART-treated patients who experience incomplete suppression of viremia
- HAART-treated patients followed with careful drug adherence monitoring
- Long-term nonprogressors
- Untreated progressors
Plan de estudios
¿Cómo está diseñado el estudio?
Detalles de diseño
Colaboradores e Investigadores
Investigadores
- Investigador principal: Joseph M. McCune, MD, PhD, University of California at San Francisco
Publicaciones y enlaces útiles
Publicaciones Generales
- Emu B, Sinclair E, Favre D, Moretto WJ, Hsue P, Hoh R, Martin JN, Nixon DF, McCune JM, Deeks SG. Phenotypic, functional, and kinetic parameters associated with apparent T-cell control of human immunodeficiency virus replication in individuals with and without antiretroviral treatment. J Virol. 2005 Nov;79(22):14169-78. doi: 10.1128/JVI.79.22.14169-14178.2005.
- Jacobson MA, Schrier R, McCune JM, Torriani FJ, Holland GN, O'Donnell JJ, Freeman WR, Bredt BM. Cytomegalovirus (CMV)-specific CD4+ T lymphocyte immune function in long-term survivors of AIDS-related CMV end-organ disease who are receiving potent antiretroviral therapy. J Infect Dis. 2001 May 1;183(9):1399-404. doi: 10.1086/319854. Epub 2001 Mar 30.
- Aberg JA, Price RW, Heeren DM, Bredt B. A pilot study of the discontinuation of antifungal therapy for disseminated cryptococcal disease in patients with acquired immunodeficiency syndrome, following immunologic response to antiretroviral therapy. J Infect Dis. 2002 Apr 15;185(8):1179-82. doi: 10.1086/339680. Epub 2002 Apr 1.
- Bredt BM, Higuera-Alhino D, Shade SB, Hebert SJ, McCune JM, Abrams DI. Short-term effects of cannabinoids on immune phenotype and function in HIV-1-infected patients. J Clin Pharmacol. 2002 Nov;42(S1):82S-89S. doi: 10.1002/j.1552-4604.2002.tb06007.x.
- Jacobson MA, Bredt BM. Association of cytomegalovirus (CMV)-specific CD4+ T lymphocyte reactivity and protective immunity against acquired immunodeficiency syndrome-related CMV retinitis. J Infect Dis. 2002 Dec 1;186(11):1701-2; author reply 1702-3. doi: 10.1086/345369. No abstract available.
- Hunt PW, Martin JN, Sinclair E, Bredt B, Hagos E, Lampiris H, Deeks SG. T cell activation is associated with lower CD4+ T cell gains in human immunodeficiency virus-infected patients with sustained viral suppression during antiretroviral therapy. J Infect Dis. 2003 May 15;187(10):1534-43. doi: 10.1086/374786. Epub 2003 Apr 23.
- Abrams DI, Hilton JF, Leiser RJ, Shade SB, Elbeik TA, Aweeka FT, Benowitz NL, Bredt BM, Kosel B, Aberg JA, Deeks SG, Mitchell TF, Mulligan K, Bacchetti P, McCune JM, Schambelan M. Short-term effects of cannabinoids in patients with HIV-1 infection: a randomized, placebo-controlled clinical trial. Ann Intern Med. 2003 Aug 19;139(4):258-66. doi: 10.7326/0003-4819-139-4-200308190-00008.
- Suni MA, Dunn HS, Orr PL, de Laat R, Sinclair E, Ghanekar SA, Bredt BM, Dunne JF, Maino VC, Maecker HT. Performance of plate-based cytokine flow cytometry with automated data analysis. BMC Immunol. 2003 Sep 2;4:9. doi: 10.1186/1471-2172-4-9. Epub 2003 Sep 2.
- Karlsson AC, Martin JN, Younger SR, Bredt BM, Epling L, Ronquillo R, Varma A, Deeks SG, McCune JM, Nixon DF, Sinclair E. Comparison of the ELISPOT and cytokine flow cytometry assays for the enumeration of antigen-specific T cells. J Immunol Methods. 2003 Dec;283(1-2):141-53. doi: 10.1016/j.jim.2003.09.001.
- Deeks SG, Martin JN, Sinclair E, Harris J, Neilands TB, Maecker HT, Hagos E, Wrin T, Petropoulos CJ, Bredt B, McCune JM. Strong cell-mediated immune responses are associated with the maintenance of low-level viremia in antiretroviral-treated individuals with drug-resistant human immunodeficiency virus type 1. J Infect Dis. 2004 Jan 15;189(2):312-21. doi: 10.1086/380098. Epub 2004 Jan 7.
- Jacobson MA, Maecker HT, Orr PL, D'Amico R, Van Natta M, Li XD, Pollard RB, Bredt BM; Adult AIDS Clinical Trials Group and the Studies of Ocular Complications of AIDS Research Group. Results of a cytomegalovirus (CMV)-specific CD8+/interferon- gamma+ cytokine flow cytometry assay correlate with clinical evidence of protective immunity in patients with AIDS with CMV retinitis. J Infect Dis. 2004 Apr 15;189(8):1362-73. doi: 10.1086/382964. Epub 2004 Mar 31.
- Karlsson AC, Younger SR, Martin JN, Grossman Z, Sinclair E, Hunt PW, Hagos E, Nixon DF, Deeks SG. Immunologic and virologic evolution during periods of intermittent and persistent low-level viremia. AIDS. 2004 Apr 30;18(7):981-9. doi: 10.1097/00002030-200404300-00005.
- Sinclair E, Black D, Epling CL, Carvidi A, Josefowicz SZ, Bredt BM, Jacobson MA. CMV antigen-specific CD4+ and CD8+ T cell IFNgamma expression and proliferation responses in healthy CMV-seropositive individuals. Viral Immunol. 2004;17(3):445-54. doi: 10.1089/vim.2004.17.445.
- Neuenburg JK, Sinclair E, Nilsson A, Kreis C, Bacchetti P, Price RW, Grant RM. HIV-producing T cells in cerebrospinal fluid. J Acquir Immune Defic Syndr. 2004 Oct 1;37(2):1237-44. doi: 10.1097/01.qai.0000136733.09275.fa.
- Maecker HT, Rinfret A, D'Souza P, Darden J, Roig E, Landry C, Hayes P, Birungi J, Anzala O, Garcia M, Harari A, Frank I, Baydo R, Baker M, Holbrook J, Ottinger J, Lamoreaux L, Epling CL, Sinclair E, Suni MA, Punt K, Calarota S, El-Bahi S, Alter G, Maila H, Kuta E, Cox J, Gray C, Altfeld M, Nougarede N, Boyer J, Tussey L, Tobery T, Bredt B, Roederer M, Koup R, Maino VC, Weinhold K, Pantaleo G, Gilmour J, Horton H, Sekaly RP. Standardization of cytokine flow cytometry assays. BMC Immunol. 2005 Jun 24;6:13. doi: 10.1186/1471-2172-6-13.
- Jacobson MA, Sinclair E, Bredt B, Agrillo L, Black D, Epling CL, Carvidi A, Ho T, Bains R, Adler SP. Antigen-specific T cell responses induced by Towne cytomegalovirus (CMV) vaccine in CMV-seronegative vaccine recipients. J Clin Virol. 2006 Mar;35(3):332-7. doi: 10.1016/j.jcv.2005.09.019. Epub 2006 Jan 18.
Fechas de registro del estudio
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Publicado por primera vez (Estimar)
Actualizaciones de registros de estudio
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Términos relacionados con este estudio
Palabras clave
Términos MeSH relevantes adicionales
- Infecciones por virus de ARN
- Enfermedades virales
- Infecciones
- Infecciones transmitidas por la sangre
- Enfermedades contagiosas
- Enfermedades De Transmisión Sexual Virales
- Enfermedades de transmisión sexual
- Infecciones por lentivirus
- Infecciones por retroviridae
- Enfermedades del sistema inmunológico
- Enfermedades de virus lentos
- Infecciones por VIH
- Síndrome de inmunodeficiencia adquirida
- Síndromes de deficiencia inmunológica
Otros números de identificación del estudio
- 5R01AI047062-03 (Subvención/contrato del NIH de EE. UU.)
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