title: T-cell engineering by a chimeric T-cell receptor with antibody-type specificity for the HIV-1 gp120.
abstract: Immune-based approaches of cell therapy against viral pathogens such as the human immunodeficiency virus type 1 (HIV-1) could be of primary importance for the control of this viral infection. Here, we designed a chimeric cell surface receptor (105TCR) to provide primary human T-lymphocytes with antibody-type specificity for the HIV-1 envelope glycoprotein. This receptor includes the single chain Fv domain of the neutralizing anti-gp120 human monoclonal antibody F105, CD8alpha hinge and the transmembrane and the cytoplasmic domains of TCRzeta. Our results show that 105TCR is expressed at the cellular surface and is capable of recognizing the HIV-1 envelope glycoprotein inducing highly efficient effector T-cell responses, including extracellular signal-regulated kinase phosphorylation and cytokine secretion. Moreover, human primary CD8+ T-lymphocytes transduced by oncoretroviral and lentiviral vectors containing the 105TCR gene are able to mediate in vitro-specific cytolysis of envelope-expressing cells and HIV-1-infected CD4+ T-lymphocytes. These findings suggest that 105TCR is particularly suited for in vivo efficacy studies.
authors.affiliation: Department of Histology, Microbiology and Medical Biotechnologies, Section of Microbiology and Virology, University of Padova, Via A Gabelli 63, Padova 35121, Italy.
authors.forename: S
authors.initials: S
authors.lastname: Masiero
authors.forename: C
authors.initials: C
authors.lastname: Del Vecchio
authors.forename: R
authors.initials: R
authors.lastname: Gavioli
authors.forename: G
authors.initials: G
authors.lastname: Mattiuzzo
authors.forename: M G
authors.initials: MG
authors.lastname: Cusi
authors.forename: L
authors.initials: L
authors.lastname: Micheli
authors.forename: F
authors.initials: F
authors.lastname: Gennari
authors.forename: A
authors.initials: A
authors.lastname: Siccardi
authors.forename: W A
authors.initials: WA
authors.lastname: Marasco
authors.forename: G
authors.initials: G
authors.lastname: Palù
authors.forename: C
authors.initials: C
authors.lastname: Parolin
mesh_terms: D000818:Animals; D000918:Antibody Specificity; D018414:CD8-Positive T-Lymphocytes / Q000378:metabolism*; D019556:COS Cells; D002460:Cell Line; D002678:Chimera; D002522:Chlorocebus aethiops; D005434:Flow Cytometry; D015870:Gene Expression; D015316:Genetic Therapy / Q000379:methods*; D015699:HIV Envelope Protein gp120 / Q000276:immunology*; D015658:HIV Infections / Q000276:immunology / Q000628:therapy*; D015497:HIV-1; D006801:Humans; D016219:Immunotherapy, Adoptive / Q000379:methods*; D019169:Jurkat Cells; D011948:Receptors, Antigen, T-Cell / Q000235:genetics* / Q000276:immunology; D020133:Reverse Transcriptase Polymerase Chain Reaction
chemical_list: D015699:HIV Envelope Protein gp120; D011948:Receptors, Antigen, T-Cell