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Szymura SJ, Wang L, Zhang T, Cha SC, Song J, Dong Z, Anderson A, Oh E, Lee V, Wang Z, Parshottam S, Rao S, Olsem JB, Crumpton BN, Lee HC, Manasanch EE, Neelapu S, Kwak LW, Thomas SK. Personalized neoantigen vaccines as early intervention in untreated patients with lymphoplasmacytic lymphoma: a non-randomized phase 1 trial. Nat Commun 2024; 15:6874. [PMID: 39128904 PMCID: PMC11317512 DOI: 10.1038/s41467-024-50880-2] [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: 09/08/2023] [Accepted: 07/22/2024] [Indexed: 08/13/2024] Open
Abstract
Lymphoplasmacytic lymphoma (LPL) is an incurable low-grade lymphoma with no standard therapy. Nine asymptomatic patients treated with a first-in-human, neoantigen DNA vaccine experienced no dose limiting toxicities (primary endpoint, NCT01209871). All patients achieve stable disease or better, with one minor response, and median time to progression of 72+ months. Post-vaccine single-cell transcriptomics reveal dichotomous antitumor responses, with reduced tumor B-cells (tracked by unique B cell receptor) and their survival pathways, but no change in clonal plasma cells. Downregulation of human leukocyte antigen (HLA) class II molecules and paradoxical upregulation of insulin-like growth factor (IGF) by the latter suggest resistance mechanisms. Vaccine therapy activates and expands bone marrow T-cell clonotypes, and functional neoantigen-specific responses (secondary endpoint), but not co-inhibitory pathways or Treg, and reduces protumoral signaling by myeloid cells, suggesting favorable perturbation of the tumor immune microenvironment. Future strategies may require combinations of vaccines with agents targeting plasma cell subpopulations, or blockade of IGF-1 signaling or myeloid cell checkpoints.
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Affiliation(s)
- Szymon J Szymura
- Stephenson Lymphoma Center, Beckman Research Institute and Hematologic Malignancies Research Institute, City of Hope, Duarte, CA, USA
| | - Lin Wang
- Department of Computational and Quantitative Medicine, Beckman Research Institute and Hematologic Malignancies Research Institute, City of Hope, Duarte, CA, USA
| | - Tiantian Zhang
- Stephenson Lymphoma Center, Beckman Research Institute and Hematologic Malignancies Research Institute, City of Hope, Duarte, CA, USA
| | - Soung-Chul Cha
- Stephenson Lymphoma Center, Beckman Research Institute and Hematologic Malignancies Research Institute, City of Hope, Duarte, CA, USA
| | - Joo Song
- Division of Hematopathology, Department of Pathology, City of Hope, Duarte, CA, USA
| | - Zhenyuan Dong
- Stephenson Lymphoma Center, Beckman Research Institute and Hematologic Malignancies Research Institute, City of Hope, Duarte, CA, USA
| | - Aaron Anderson
- Stephenson Lymphoma Center, Beckman Research Institute and Hematologic Malignancies Research Institute, City of Hope, Duarte, CA, USA
| | - Elizabeth Oh
- Stephenson Lymphoma Center, Beckman Research Institute and Hematologic Malignancies Research Institute, City of Hope, Duarte, CA, USA
| | - Vincent Lee
- Stephenson Lymphoma Center, Beckman Research Institute and Hematologic Malignancies Research Institute, City of Hope, Duarte, CA, USA
| | - Zhe Wang
- Stephenson Lymphoma Center, Beckman Research Institute and Hematologic Malignancies Research Institute, City of Hope, Duarte, CA, USA
| | - Sapna Parshottam
- Department of Lymphoma and Myeloma, The University of Texas M.D. Anderson Cancer Center, Houston, TX, USA
| | - Sheetal Rao
- Department of Lymphoma and Myeloma, The University of Texas M.D. Anderson Cancer Center, Houston, TX, USA
| | - Jasper B Olsem
- Department of Lymphoma and Myeloma, The University of Texas M.D. Anderson Cancer Center, Houston, TX, USA
| | - Brandon N Crumpton
- Department of Lymphoma and Myeloma, The University of Texas M.D. Anderson Cancer Center, Houston, TX, USA
| | - Hans C Lee
- Department of Lymphoma and Myeloma, The University of Texas M.D. Anderson Cancer Center, Houston, TX, USA
| | - Elisabet E Manasanch
- Department of Lymphoma and Myeloma, The University of Texas M.D. Anderson Cancer Center, Houston, TX, USA
| | - Sattva Neelapu
- Department of Lymphoma and Myeloma, The University of Texas M.D. Anderson Cancer Center, Houston, TX, USA
| | - Larry W Kwak
- Stephenson Lymphoma Center, Beckman Research Institute and Hematologic Malignancies Research Institute, City of Hope, Duarte, CA, USA.
| | - Sheeba K Thomas
- Department of Lymphoma and Myeloma, The University of Texas M.D. Anderson Cancer Center, Houston, TX, USA
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Wang S, Yu H, He R, Song X, Chen S, Yu N, Li W, Li F, Jiang Q. Exposure to Low-Dose Radiation Enhanced the Antitumor Effect of a Dendritic Cell Vaccine. Dose Response 2019; 17:1559325819832144. [PMID: 30828272 PMCID: PMC6388453 DOI: 10.1177/1559325819832144] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Revised: 12/25/2018] [Accepted: 01/22/2019] [Indexed: 01/07/2023] Open
Abstract
The unsatisfactory clinical efficacy of dendritic cell (DC)-based cancer vaccines prepared by conventional methods is partly due to their insufficient capacity for migration. Our previous study showed that exposure to low-dose radiation (LDR) at a dose of 0.2 Gy promoted DC migration in vitro. The present study further investigates whether exposure to LDR at a dose of 0.2 Gy during the DC vaccine preparation could increase the antitumor effect of DC vaccines derived from mouse bone marrow. Our results showed that the migratory capacities of DCs were significantly increased after exposure to LDR. Furthermore, exposure to LDR resulted in an increased ability of DCs to induce T-cell proliferation, and the cytotoxic effect of cytotoxic T lymphocytes (CTLs) primed by the DCs exposed to LDR was significantly enhanced. An in vivo study using a mouse transplanted tumor model showed that subcutaneous injections of a DC vaccine exposed to LDR led to an increased mouse survival rate, infiltration of CTLs into tumor tissue, and apoptosis of tumor cells, which were accompanied by significant upregulation of serum interferon γ and interleukin 12. These results indicate that exposing DCs to LDR during the DC vaccine preparation is an effective approach to enhance its antitumor effect.
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Affiliation(s)
- Sinian Wang
- Lab of Radiation Damage Research, The General Hospital of the PLA Rocket Force, Beijing, China
| | - Huijie Yu
- Lab of Radiation Damage Research, The General Hospital of the PLA Rocket Force, Beijing, China
| | - Rui He
- Lab of Radiation Damage Research, The General Hospital of the PLA Rocket Force, Beijing, China
| | - Xiujun Song
- Lab of Radiation Damage Research, The General Hospital of the PLA Rocket Force, Beijing, China
| | - Shu Chen
- Lab of Radiation Damage Research, The General Hospital of the PLA Rocket Force, Beijing, China.,Huangsi Clinic of PLA Strategic Support Force, Beijing, China
| | - Nan Yu
- Lab of Radiation Damage Research, The General Hospital of the PLA Rocket Force, Beijing, China
| | - Wei Li
- Lab of Radiation Damage Research, The General Hospital of the PLA Rocket Force, Beijing, China
| | - Fengsheng Li
- Lab of Radiation Damage Research, The General Hospital of the PLA Rocket Force, Beijing, China
| | - Qisheng Jiang
- Lab of Radiation Damage Research, The General Hospital of the PLA Rocket Force, Beijing, China
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