title: Ex vivo expansion of polyclonal and antigen-specific cytotoxic T lymphocytes by artificial APCs expressing ligands for the T-cell receptor, CD28 and 4-1BB.
abstract: The ex vivo priming and expansion of human cytotoxic T lymphocytes (CTLs) has potential for use in immunotherapy applications for cancer and infectious diseases. To overcome the difficulty in obtaining sufficient numbers of CTLs, we have developed artificial antigen-presenting cells (aAPCs) expressing ligands for the T-cell receptor (TCR) and the CD28 and 4-1BB co-stimulatory surface molecules. These aAPCs reproducibly activate and rapidly expand polyclonal or antigen-specific CD8(+) T cells. The starting repertoire of CD8+ T cells was preserved during culture. Furthermore, apoptosis of cultured CD8(+) T cells was diminished by this approach. This approach may have important therapeutic implications for adoptive immunotherapy.
authors.affiliation: Abramson Family Cancer Research Institute, University of Pennsylvania Cancer Center, Philadelphia, PA 19104, USA.
authors.forename: Marcela V
authors.initials: MV
authors.lastname: Maus
authors.forename: Anna K
authors.initials: AK
authors.lastname: Thomas
authors.forename: Debra G B
authors.initials: DG
authors.lastname: Leonard
authors.forename: David
authors.initials: D
authors.lastname: Allman
authors.forename: Kathakali
authors.initials: K
authors.lastname: Addya
authors.forename: Katia
authors.initials: K
authors.lastname: Schlienger
authors.forename: James L
authors.initials: JL
authors.lastname: Riley
authors.forename: Carl H
authors.initials: CH
authors.lastname: June
mesh_terms: D000938:Antigen-Presenting Cells / Q000276:immunology*; D015703:Antigens, CD; D017209:Apoptosis; D018106:CD28 Antigens / Q000378:metabolism*; D018414:CD8-Positive T-Lymphocytes / Q000378:metabolism; D002460:Cell Line; D002469:Cell Separation; D002478:Cells, Cultured; D018920:Coculture Techniques; D005434:Flow Cytometry; D006801:Humans; D016219:Immunotherapy, Adoptive / Q000379:methods; D020014:K562 Cells; D008024:Ligands; D011485:Protein Binding; D011948:Receptors, Antigen, T-Cell / Q000378:metabolism*; D017475:Receptors, Nerve Growth Factor / Q000378:metabolism*; D018124:Receptors, Tumor Necrosis Factor / Q000378:metabolism*; D020133:Reverse Transcriptase Polymerase Chain Reaction; D013602:T-Lymphocytes, Cytotoxic / Q000166:cytology* / Q000276:immunology*; D013997:Time Factors; D053261:Tumor Necrosis Factor Receptor Superfamily, Member 9
chemical_list: D015703:Antigens, CD; D018106:CD28 Antigens; D008024:Ligands; D011948:Receptors, Antigen, T-Cell; D017475:Receptors, Nerve Growth Factor; D018124:Receptors, Tumor Necrosis Factor; C505714:TNFRSF9 protein, human; D053261:Tumor Necrosis Factor Receptor Superfamily, Member 9