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Singh R, Kim YH, Lee SJ, Eom HS, Choi BK. 4-1BB immunotherapy: advances and hurdles. Exp Mol Med 2024; 56:32-39. [PMID: 38172595 PMCID: PMC10834507 DOI: 10.1038/s12276-023-01136-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2023] [Revised: 09/22/2023] [Accepted: 10/09/2023] [Indexed: 01/05/2024] Open
Abstract
Since its initial description 35 years ago as an inducible molecule expressed in cytotoxic and helper T cells, 4-1BB has emerged as a crucial receptor in T-cell-mediated immune functions. Numerous studies have demonstrated the involvement of 4-1BB in infection and tumor immunity. However, the clinical development of 4-1BB agonist antibodies has been impeded by the occurrence of strong adverse events, notably hepatotoxicity, even though these antibodies have exhibited tremendous promise in in vivo tumor models. Efforts are currently underway to develop a new generation of agonist antibodies and recombinant proteins with modified effector functions that can harness the potent T-cell modulation properties of 4-1BB while mitigating adverse effects. In this review, we briefly examine the role of 4-1BB in T-cell biology, explore its clinical applications, and discuss future prospects in the field of 4-1BB agonist immunotherapy.
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Affiliation(s)
- Rohit Singh
- Immuno-oncology Branch, Division of Rare and Refractory Cancer, National Cancer Center, Goyang, 10408, Republic of Korea
| | - Young-Ho Kim
- Diagnostics and Therapeutics Technology Branch, Division of Technology Convergence, Research Institute, National Cancer Center, Goyang, 10408, Republic of Korea.
| | - Sang-Jin Lee
- Immuno-oncology Branch, Division of Rare and Refractory Cancer, National Cancer Center, Goyang, 10408, Republic of Korea
| | - Hyeon-Seok Eom
- Hematological Malignancy Center, National Cancer Center, Goyang, 10408, Republic of Korea
| | - Beom K Choi
- Immuno-oncology Branch, Division of Rare and Refractory Cancer, National Cancer Center, Goyang, 10408, Republic of Korea.
- Innobationbio, Co., Ltd., Mapo-gu, Seoul, 03929, Republic of Korea.
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Choi YB, Kim CK, Yun Y. Lad, an Adapter Protein Interacting with the SH2 Domain of p56 lck, Is Required for T Cell Activation. THE JOURNAL OF IMMUNOLOGY 1999. [DOI: 10.4049/jimmunol.163.10.5242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Abstract
T cell-specific Src family tyrosine kinase, p56lck, plays crucial roles in T cell differentiation, activation, and proliferation. These multiple functions of p56lck are believed to be conducted through the protein-protein interactions with various cellular signaling proteins. To clarify the mechanisms through which p56lck contributes to T cell signaling, we identified the proteins binding to the Src homology 2 (SH2) domain of p56lck through a tyrosine phosphorylation-dependent yeast two-hybrid screening. Subsequent characterization of positive clones revealed the presence of a protein of 366 aa named Lad (Lck-associated adapter protein), which is a potential murine homologue of previously reported TSAd, a T cell-specific adapter protein. Lad contains several protein-protein interaction domains including a zinc-finger motif, an SH2 domain, a proline-rich SH3 binding motif, and several phosphotyrosine sites. Furthermore, Lad was tyrosine phosphorylated and associated with p56lckin vivo and redistributed from cytoplasm to the plasma membrane in a T cell activation-dependent manner. Moreover in T cells, IL-2 promoter activity was enhanced upon coexpression of Lad but was inhibited by the coexpression of antisense Lad RNA. These characteristics of Lad suggest that Lad play an essential role as an adapter protein in p56lck-mediated T cell signaling.
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Affiliation(s)
- Young Bong Choi
- *Signal Transduction Laboratory Mogam Biotechnology Research Institute, Koosungmyon, Yonginsi, Kyunggido, Korea; and
- †Department of Molecular Life Science and Center for Cell Signaling Research, Ewha Women’s University, Seodaemungu, Daehyundong 11-1, Seoul, 120-750, Korea
| | - Chan Ki Kim
- *Signal Transduction Laboratory Mogam Biotechnology Research Institute, Koosungmyon, Yonginsi, Kyunggido, Korea; and
| | - Yungdae Yun
- *Signal Transduction Laboratory Mogam Biotechnology Research Institute, Koosungmyon, Yonginsi, Kyunggido, Korea; and
- †Department of Molecular Life Science and Center for Cell Signaling Research, Ewha Women’s University, Seodaemungu, Daehyundong 11-1, Seoul, 120-750, Korea
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Tan JT, Whitmire JK, Ahmed R, Pearson TC, Larsen CP. 4-1BB Ligand, a Member of the TNF Family, Is Important for the Generation of Antiviral CD8 T Cell Responses. THE JOURNAL OF IMMUNOLOGY 1999. [DOI: 10.4049/jimmunol.163.9.4859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Abstract
4-1BB (CD137) is a costimulatory molecule expressed on activated T cells and interacts with 4-1BB ligand (4-1BBL) on APCs. To investigate the role of 4-1BB costimulation for the development of primary immune responses, 4-1BBL-deficient (4-1BBL−/−) mice were infected with lymphocytic choriomeningitis virus (LCMV). 4-1BBL−/− mice were able to generate CTL and eliminate acute LCMV infection with normal kinetics, but CD8 T cell expansion was 2- to 3-fold lower than in wild-type (+/+) mice. In the same mice, virus-specific CD4 Th and B cell responses were minimally affected, indicating that 4-1BB costimulation preferentially affects CD8 T cell responses. This result contrasts with our earlier work with CD40L-deficient (CD40L−/−) mice, in which the CD8 T cell response was unaffected and the CD4 T cell response was markedly impaired. When both 4-1BBL- and B7-dependent signals were absent, CD8 T cell expansion was further reduced, resulting in lower CTL activity and impairing their ability to clear LCMV. Altogether, these results indicate that T cells have distinct costimulatory requirements: optimal CD8 responses require 4-1BBL-dependent interactions, whereas CD4 responses are minimally affected by 4-1BB costimulation, but require CD40-CD40L and B7-dependent interactions.
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Affiliation(s)
- Joyce T. Tan
- *The Carlos and Marguerite Mason Transplantation Biology Research Center and Department of Surgery and
- 4 M.A. DeBenedette, T. Wen, M.F. Bochmann, P.S. Ohashi, B.H. Barber, K.L. Stocking, J.J. Pechon, and T.R. Watts. Submitted for publication
| | - Jason K. Whitmire
- †Emory Vaccine Center and Department of Microbiology and Immunology, Emory University School of Medicine, Atlanta, GA 30322
- 4 M.A. DeBenedette, T. Wen, M.F. Bochmann, P.S. Ohashi, B.H. Barber, K.L. Stocking, J.J. Pechon, and T.R. Watts. Submitted for publication
| | - Rafi Ahmed
- †Emory Vaccine Center and Department of Microbiology and Immunology, Emory University School of Medicine, Atlanta, GA 30322
- 4 M.A. DeBenedette, T. Wen, M.F. Bochmann, P.S. Ohashi, B.H. Barber, K.L. Stocking, J.J. Pechon, and T.R. Watts. Submitted for publication
| | - Thomas C. Pearson
- *The Carlos and Marguerite Mason Transplantation Biology Research Center and Department of Surgery and
- 4 M.A. DeBenedette, T. Wen, M.F. Bochmann, P.S. Ohashi, B.H. Barber, K.L. Stocking, J.J. Pechon, and T.R. Watts. Submitted for publication
| | - Christian P. Larsen
- *The Carlos and Marguerite Mason Transplantation Biology Research Center and Department of Surgery and
- 4 M.A. DeBenedette, T. Wen, M.F. Bochmann, P.S. Ohashi, B.H. Barber, K.L. Stocking, J.J. Pechon, and T.R. Watts. Submitted for publication
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