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Cattaneo I, Choblet S, Valgardsdottir R, Roth M, Massafra A, Beeg M, Gobbi M, Duonor-Cerutti M, Golay J. Development of a Bispecific IgG1 Antibody Targeting BCMA and PDL1. Antibodies (Basel) 2024; 13:15. [PMID: 38390876 PMCID: PMC10885062 DOI: 10.3390/antib13010015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 02/12/2024] [Accepted: 02/15/2024] [Indexed: 02/24/2024] Open
Abstract
We designed, produced, and purified a novel IgG1-like, bispecific antibody (bsAb) directed against B-cell maturation antigen (BCMA), expressed by multiple myeloma (MM) cells, and an immune checkpoint inhibitor (ICI), PDL1, expressed in the MM microenvironment. The BCMA×PDL1 bsAb was fully characterized in vitro. BCMA×PDL1 bound specifically and simultaneously, with nM affinity, to both native membrane-bound antigens and to the recombinant soluble antigen fragments, as shown by immunophenotyping analyses and surface plasmon resonance (SPR), respectively. The binding affinity of bsAb for PDL1 and BCMA was similar to each other, but PDL1 affinity was about 10-fold lower in the bsAb compared to parent mAb, probably due to the steric hindrance associated with the more internal anti-PDL1 Fab. The bsAb was also able to functionally block both antigen targets with IC50 in the nM range. The bsAb Fc was functional, inducing human-complement-dependent cytotoxicity as well as ADCC by NK cells in 24 h killing assays. Finally, BCMA×PDL1 was effective in 7-day killing assays with peripheral blood mononuclear cells as effectors, inducing up to 75% of target MM cell line killing at a physiologically attainable, 6 nM, concentration. These data provide the necessary basis for future optimization and in vivo testing of this novel bsAb.
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Affiliation(s)
- Irene Cattaneo
- Division of Hematology, Center of Cellular Therapy "G. Lanzani", Azienda Socio Sanitaria Territoriale Papa Giovanni XXIII, 24122 Bergamo, Italy
| | - Sylvie Choblet
- Centre National de la Recherche Scientifique UAR3426 "Baculovirus et Therapie", 30380 Saint-Christol-Lez-Alès, France
| | - Rut Valgardsdottir
- Division of Hematology, Center of Cellular Therapy "G. Lanzani", Azienda Socio Sanitaria Territoriale Papa Giovanni XXIII, 24122 Bergamo, Italy
| | - Muriel Roth
- Centre National de la Recherche Scientifique UAR3426 "Baculovirus et Therapie", 30380 Saint-Christol-Lez-Alès, France
| | - Annamaria Massafra
- Laboratory of Pharmacodynamics and Pharmacokinetics, Department of Biochemistry and Pharmacology, Istituto di Ricerche Farmacologiche Mario Negri-IRCCS, 20157 Milan, Italy
| | - Marten Beeg
- Laboratory of Pharmacodynamics and Pharmacokinetics, Department of Biochemistry and Pharmacology, Istituto di Ricerche Farmacologiche Mario Negri-IRCCS, 20157 Milan, Italy
| | - Marco Gobbi
- Laboratory of Pharmacodynamics and Pharmacokinetics, Department of Biochemistry and Pharmacology, Istituto di Ricerche Farmacologiche Mario Negri-IRCCS, 20157 Milan, Italy
| | - Martine Duonor-Cerutti
- Centre National de la Recherche Scientifique UAR3426 "Baculovirus et Therapie", 30380 Saint-Christol-Lez-Alès, France
| | - Josée Golay
- Division of Hematology, Center of Cellular Therapy "G. Lanzani", Azienda Socio Sanitaria Territoriale Papa Giovanni XXIII, 24122 Bergamo, Italy
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Bednarska K, Chowdhury R, Tobin JWD, Swain F, Keane C, Boyle S, Khanna R, Gandhi MK. Epstein-Barr virus-associated lymphomas decoded. Br J Haematol 2024; 204:415-433. [PMID: 38155519 DOI: 10.1111/bjh.19255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 11/15/2023] [Accepted: 11/29/2023] [Indexed: 12/30/2023]
Abstract
Epstein-Barr virus (EBV)-associated lymphomas cover a range of histological B- and T-cell non-Hodgkin and Hodgkin lymphoma subtypes. The role of EBV on B-cell malignant pathogenesis and its impact on the tumour microenvironment are intriguing but incompletely understood. Both the International Consensus Classification (ICC) and 5th Edition of the World Health Organization (WHO-HAEM5) proposals give prominence to the distinct clinical, prognostic, genetic and tumour microenvironmental features of EBV in lymphoproliferative disorders. There have been major advances in our biological understanding, in how to harness features of EBV and its host immune response for targeted therapy, and in using EBV as a method to monitor disease response. In this article, we showcase the latest developments and how they may be integrated to stimulate new and innovative approaches for further lines of investigation and therapy.
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Affiliation(s)
- Karolina Bednarska
- Mater Research Institute, University of Queensland, Brisbane, Queensland, Australia
| | - Rakin Chowdhury
- Frazer Institute, University of Queensland, Brisbane, Queensland, Australia
- Department of Haematology, Princess Alexandra Hospital, Brisbane, Queensland, Australia
| | - Joshua W D Tobin
- Mater Research Institute, University of Queensland, Brisbane, Queensland, Australia
- Department of Haematology, Princess Alexandra Hospital, Brisbane, Queensland, Australia
| | - Fiona Swain
- Frazer Institute, University of Queensland, Brisbane, Queensland, Australia
- Department of Haematology, Princess Alexandra Hospital, Brisbane, Queensland, Australia
| | - Colm Keane
- Frazer Institute, University of Queensland, Brisbane, Queensland, Australia
- Department of Haematology, Princess Alexandra Hospital, Brisbane, Queensland, Australia
| | - Stephen Boyle
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Rajiv Khanna
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Maher K Gandhi
- Mater Research Institute, University of Queensland, Brisbane, Queensland, Australia
- Department of Haematology, Princess Alexandra Hospital, Brisbane, Queensland, Australia
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Geerlinks AV, Allen U, Ngan BY, Punnett A. PD-L1 and PD-1 expression in pediatric post-transplant Burkitt lymphoma and other monomorphic post-transplant lymphoproliferative disorders. Pediatr Blood Cancer 2023; 70:e30674. [PMID: 37715724 DOI: 10.1002/pbc.30674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 08/09/2023] [Accepted: 08/24/2023] [Indexed: 09/18/2023]
Abstract
BACKGROUND Post-transplant lymphoproliferative disorders (PTLD) develop as a consequence of immune suppression. Programmed death protein 1 (PD-1), a regulator of host immune activation, binds to programmed death-ligand 1 (PD-L1) to suppress the T-cell immune response. PD-1/PD-L1 pathway may play a role in PTLD. The objective was to describe intratumoral expression of PD-L1 and PD-1 in pediatric monomorphic PTLD, and assess if density of these cells is associated with progression-free survival (PFS) and overall survival (OS). PROCEDURE Clinical variables and outcome data were collected on B-cell monomorphic PTLD treated in Toronto, Canada between 2000 and 2017. Diagnostic area from tumor tissue was identified to count CD3-positive or PD-1-positive cells and CD3-negative lymphoma B cells or PD-L1-positive cells. CD3+ , PD-1+ , and PD-L1+ cell densities were compared between cases of PTLD. OS and PFS were analyzed. RESULTS We identified 25 cases of B-cell monomorphic PTLD; majority Burkitt lymphoma (32%) and diffuse large B-cell lymphoma (56%). All cases had CD3+ cells infiltrating the tumor, and median percentage of CD3+ cells was 14% (interquartile range: 6.2%-25%). Twelve cases (48%) had PD-1+ cell infiltrating (range: 1%-83%) and 13 cases (52%) had no PD-1+ cells infiltrating. Sixteen cases (64%) had PD-L1+ cells present; however, there was no PD-L1 expression on any Burkitt lymphoma tissue. When comparing PD-1 and PD-L1 expression, there was no difference in OS or PFS. CONCLUSION Intratumoral presence of PD-1+ and PD-L1+ cells varied in pediatric patients with monomorphic PTLD; however, no relationship to OS and PFS was identified.
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Affiliation(s)
- Ashley V Geerlinks
- Pediatric Hematology/Oncology, Children's Hospital, Schulich School of Medicine, Western University, London, Ontario, Canada
| | - Upton Allen
- Division of Infectious Diseases, Department of Pediatrics, Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Bo-Yee Ngan
- Division of Pathology, Department of Pediatric Laboratory Medicine, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Angela Punnett
- Division of Haematology/Oncology, Hospital for Sick Children, Toronto, Ontario, Canada
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Smyth E, Cheah CY, Seymour JF. Management of indolent B-cell Lymphomas: A review of approved and emerging targeted therapies. Cancer Treat Rev 2023; 113:102510. [PMID: 36634434 DOI: 10.1016/j.ctrv.2023.102510] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 12/23/2022] [Accepted: 01/01/2023] [Indexed: 01/07/2023]
Abstract
The indolent B-cell non-Hodgkin lymphomas (B-NHL) comprise a heterogenous group of lymphoproliferative disorders characterized by slow growth kinetics and a relapsing/remitting course. Management has, until recently, been uniform across all indolent B-NHL subtypes. Improving insight into pathophysiological and molecular features of each disease has led to development of several targeted therapies. Consequently, each subtype must now be considered an individual entity. In this review, we consider the three commonest indolent B-NHLs: follicular lymphoma, marginal zone lymphoma and Waldenstrom's macroglobulinemia and review in detail the data on approved and emerging targeted therapeutic agents for each B-NHL subtype.
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Affiliation(s)
- Elizabeth Smyth
- Department of Hematology, Sir Charles Gairdner Hospital, Perth, Western Australia, Australia
| | - Chan Y Cheah
- Department of Hematology, Sir Charles Gairdner Hospital, Perth, Western Australia, Australia; Medical School, University of Western Australia, Perth, Western Australia, Australia.
| | - John F Seymour
- Peter MacCallum Cancer Centre & The Royal Melbourne Hospital, Melbourne, Victoria, Australia; University of Melbourne, Victoria, Australia.
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Xie W, Medeiros LJ, Li S, Tang G, Fan G, Xu J. PD-1/PD-L1 Pathway: A Therapeutic Target in CD30+ Large Cell Lymphomas. Biomedicines 2022; 10:biomedicines10071587. [PMID: 35884893 PMCID: PMC9313053 DOI: 10.3390/biomedicines10071587] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 06/17/2022] [Accepted: 07/01/2022] [Indexed: 11/23/2022] Open
Abstract
The programmed death-ligands, PD-L1 and PD-L2, reside on tumor cells and can bind with programmed death-1 protein (PD-1) on T-cells, resulting in tumor immune escape. PD-1 ligands are highly expressed in some CD30+ large cell lymphomas, including classic Hodgkin lymphoma (CHL), primary mediastinal large B-cell lymphoma (PMBL), Epstein–Barr virus (EBV)-positive diffuse large B-cell lymphoma (EBV+ DLBCL), and anaplastic large cell lymphoma (ALCL). The genetic alteration of the chromosome 9p24.1 locus, the location of PD-L1, PD-L2, and JAK2 are the main mechanisms leading to PD-L1 and PD-L2 overexpression and are frequently observed in these CD30+ large cell lymphomas. The JAK/STAT pathway is also commonly constitutively activated in these lymphomas, further contributing to the upregulated expression of PD-L1 and PD-L2. Other mechanisms underlying the overexpression of PD-L1 and PD-L2 in some cases include EBV infection and the activation of the mitogen-activated protein kinase (MAPK) pathway. These cellular and molecular mechanisms provide a scientific rationale for PD-1/PD-L1 blockade in treating patients with relapsed/refractory (R/R) disease and, possibly, in newly diagnosed patients. Given the high efficacy of PD-1 inhibitors in patients with R/R CHL and PMBL, these agents have become a standard treatment in these patient subgroups. Preliminary studies of PD-1 inhibitors in patients with R/R EBV+ DLBCL and R/R ALCL have also shown promising results. Future directions for these patients will likely include PD-1/PD-L1 blockade in combination with other therapeutic agents, such as brentuximab or traditional chemotherapy regimens.
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Affiliation(s)
- Wei Xie
- Department of Pathology and Laboratory Medicine, Oregon Health & Science University, 3181 S.W. Sam Jackson Park Road, Portland, OR 97239, USA; (W.X.); (G.F.)
| | - L. Jeffrey Medeiros
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd, Houston, TX 77030, USA; (L.J.M.); (S.L.); (G.T.)
| | - Shaoying Li
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd, Houston, TX 77030, USA; (L.J.M.); (S.L.); (G.T.)
| | - Guilin Tang
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd, Houston, TX 77030, USA; (L.J.M.); (S.L.); (G.T.)
| | - Guang Fan
- Department of Pathology and Laboratory Medicine, Oregon Health & Science University, 3181 S.W. Sam Jackson Park Road, Portland, OR 97239, USA; (W.X.); (G.F.)
| | - Jie Xu
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd, Houston, TX 77030, USA; (L.J.M.); (S.L.); (G.T.)
- Correspondence: ; Tel.: +1-713-794-1220; Fax: +1-713-563-3166
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