1
|
Musher BL, Rowinsky EK, Smaglo BG, Abidi W, Othman M, Patel K, Jawaid S, Jing J, Brisco A, Leen AM, Wu M, Sandin LC, Wenthe J, Eriksson E, Ullenhag GJ, Grilley B, Leja-Jarblad J, Hilsenbeck SG, Brenner MK, Loskog ASI. LOAd703, an oncolytic virus-based immunostimulatory gene therapy, combined with chemotherapy for unresectable or metastatic pancreatic cancer (LOKON001): results from arm 1 of a non-randomised, single-centre, phase 1/2 study. Lancet Oncol 2024; 25:488-500. [PMID: 38547893 DOI: 10.1016/s1470-2045(24)00079-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 01/23/2024] [Accepted: 01/30/2024] [Indexed: 04/02/2024]
Abstract
BACKGROUND Pancreatic ductal adenocarcinoma is characterised by low immunogenicity and an immunosuppressive tumour microenvironment. LOAd703, an oncolytic adenovirus with transgenes encoding TMZ-CD40L and 4-1BBL, lyses cancer cells selectively, activates cytotoxic T cells, and induces tumour regression in preclinical models. The aim of this study was to evaluate the safety and feasibility of combining LOAd703 with chemotherapy for advanced pancreatic ductal adenocarcinoma. METHODS LOKON001 was a non-randomised, phase 1/2 study conducted at the Dan L Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX, USA, and consisted of two arms conducted sequentially; the results of arm 1 are presented here. In arm 1, patients 18 years or older with previously treated or treatment-naive unresectable or metastatic pancreatic ductal adenocarcinoma were treated with standard 28-day cycles of intravenous nab-paclitaxel 125 mg/m2 plus gemcitabine 1000 mg/m2 (up to 12 cycles) and intratumoural injections of LOAd703 every 2 weeks. Patients were assigned using Bayesian optimal interval design to receive 500 μL of LOAd703 at 5 × 1010 (dose 1), 1 × 1011 (dose 2), or 5 × 1011 (dose 3) viral particles per injection, injected endoscopically or percutaneously into the pancreatic tumour or a metastasis for six injections. The primary endpoints were safety and treatment-emergent immune response in patients who received at least one dose of LOAd703, and antitumour activity was a secondary endpoint. This study was registered with ClinicalTrials.gov, NCT02705196, arm 2 is ongoing and open to new participants. FINDINGS Between Dec 2, 2016, and Oct 17, 2019, 23 patients were assessed for eligibility, leading to 22 patients being enrolled. One patient withdrew consent, resulting in 21 patients (13 [62%] men and eight [38%] women) assigned to a dose group (three to dose 1, four to dose 2, and 14 to dose 3). 21 patients were evaluable for safety. Median follow-up time was 6 months (IQR 4-10), and data cutoff was Jan 5, 2023. The most common treatment-emergent adverse events overall were anaemia (96 [8%] of 1237 events), lymphopenia (86 [7%] events), hyperglycaemia (70 [6%] events), leukopenia (63 [5%] events), hypertension (62 [5%] events), and hypoalbuminaemia (61 [5%] events). The most common adverse events attributed to LOAd703 were fever (14 [67%] of 21 patients), fatigue (eight [38%]), chills (seven [33%]), and elevated liver enzymes (alanine aminotransferase in five [24%], alkaline phosphatase in four [19%], and aspartate aminotransferase in four [19%]), all of which were grade 1-2, except for a transient grade 3 aminotransferase elevation occurring at dose 3. A maximum tolerated dose was not reached, thereby establishing dose 3 as the highest-evaluated safe dose when combined with nab-paclitaxel plus gemcitabine. Proportions of CD8+ effector memory cells and adenovirus-specific T cells increased after LOAd703 injections in 15 (94%) of 16 patients for whom T-cell assays could be performed. Eight (44%, 95% CI 25-66) of 18 patients evaluable for activity had an objective response. INTERPRETATION Combining LOAd703 with nab-paclitaxel plus gemcitabine in patients with advanced pancreatic ductal adenocarcinoma was feasible and safe. To build upon this novel chemoimmunotherapeutic approach, arm 2 of LOKON001, which combines LOAd703, nab-paclitaxel plus gemcitabine, and atezolizumab, is ongoing. FUNDING Lokon Pharma, the Swedish Cancer Society, and the Swedish Research Council.
Collapse
Affiliation(s)
- Benjamin L Musher
- Dan L Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX, USA.
| | | | | | - Wasif Abidi
- Dan L Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX, USA
| | - Mohamed Othman
- Dan L Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX, USA
| | - Kalpesh Patel
- Dan L Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX, USA
| | - Salmaan Jawaid
- Dan L Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX, USA
| | - James Jing
- Dan L Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX, USA
| | - Amanda Brisco
- USF Health Morsani College of Medicine, Tampa, FL, USA
| | - Ann M Leen
- Dan L Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX, USA
| | - Mengfen Wu
- Dan L Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX, USA
| | | | - Jessica Wenthe
- Lokon Pharma AB, Uppsala, Sweden; Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Emma Eriksson
- Lokon Pharma AB, Uppsala, Sweden; Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Gustav J Ullenhag
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden; Department of Oncology, Uppsala University Hospital, Akademiska Sjukhuset, Uppsala, Sweden
| | - Bambi Grilley
- Dan L Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX, USA
| | | | - Susan G Hilsenbeck
- Dan L Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX, USA
| | - Malcolm K Brenner
- Dan L Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX, USA
| | - Angelica S I Loskog
- Lokon Pharma AB, Uppsala, Sweden; Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| |
Collapse
|
2
|
Flemington V, Davies EJ, Robinson D, Sandin LC, Delpuech O, Zhang P, Hanson L, Farrington P, Bell S, Falenta K, Gibbons FD, Lindsay N, Smith A, Wilson J, Roberts K, Tonge M, Hopcroft P, Willis SE, Roudier MP, Rooney C, Coker EA, Jaaks P, Garnett MJ, Fawell SE, Jones CD, Ward RA, Simpson I, Cosulich SC, Pease JE, Smith PD. AZD0364 Is a Potent and Selective ERK1/2 Inhibitor That Enhances Antitumor Activity in KRAS-Mutant Tumor Models when Combined with the MEK Inhibitor, Selumetinib. Mol Cancer Ther 2020; 20:238-249. [PMID: 33273059 DOI: 10.1158/1535-7163.mct-20-0002] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 07/13/2020] [Accepted: 11/06/2020] [Indexed: 11/16/2022]
Abstract
The RAS-regulated RAF-MEK1/2-ERK1/2 (RAS/MAPK) signaling pathway is a major driver in oncogenesis and is frequently dysregulated in human cancers, primarily by mutations in BRAF or RAS genes. The clinical benefit of inhibitors of this pathway as single agents has only been realized in BRAF-mutant melanoma, with limited effect of single-agent pathway inhibitors in KRAS-mutant tumors. Combined inhibition of multiple nodes within this pathway, such as MEK1/2 and ERK1/2, may be necessary to effectively suppress pathway signaling in KRAS-mutant tumors and achieve meaningful clinical benefit. Here, we report the discovery and characterization of AZD0364, a novel, reversible, ATP-competitive ERK1/2 inhibitor with high potency and kinase selectivity. In vitro, AZD0364 treatment resulted in inhibition of proximal and distal biomarkers and reduced proliferation in sensitive BRAF-mutant and KRAS-mutant cell lines. In multiple in vivo xenograft models, AZD0364 showed dose- and time-dependent modulation of ERK1/2-dependent signaling biomarkers resulting in tumor regression in sensitive BRAF- and KRAS-mutant xenografts. We demonstrate that AZD0364 in combination with the MEK1/2 inhibitor, selumetinib (AZD6244 and ARRY142886), enhances efficacy in KRAS-mutant preclinical models that are moderately sensitive or resistant to MEK1/2 inhibition. This combination results in deeper and more durable suppression of the RAS/MAPK signaling pathway that is not achievable with single-agent treatment. The AZD0364 and selumetinib combination also results in significant tumor regressions in multiple KRAS-mutant xenograft models. The combination of ERK1/2 and MEK1/2 inhibition thereby represents a viable clinical approach to target KRAS-mutant tumors.
Collapse
Affiliation(s)
- Vikki Flemington
- Bioscience, Oncology R&D, AstraZeneca, Cambridge, England, United Kingdom.
| | - Emma J Davies
- Bioscience, Oncology R&D, AstraZeneca, Cambridge, England, United Kingdom
| | - David Robinson
- Bioscience, Oncology R&D, AstraZeneca, Cambridge, England, United Kingdom
| | - Linda C Sandin
- Bioscience, Oncology R&D, AstraZeneca, Cambridge, England, United Kingdom
| | - Oona Delpuech
- Bioscience, Oncology R&D, AstraZeneca, Cambridge, England, United Kingdom
| | - Pei Zhang
- Bioscience, Oncology R&D, AstraZeneca, Cambridge, England, United Kingdom
| | - Lyndsey Hanson
- Bioscience, Oncology R&D, AstraZeneca, Cambridge, England, United Kingdom
| | - Paul Farrington
- Bioscience, Oncology R&D, AstraZeneca, Cambridge, England, United Kingdom
| | - Sigourney Bell
- Bioscience, Oncology R&D, AstraZeneca, Cambridge, England, United Kingdom
| | - Katarzyna Falenta
- Bioscience, Oncology R&D, AstraZeneca, Cambridge, England, United Kingdom
| | - Francis D Gibbons
- DMPK, Oncology, Oncology R&D, AstraZeneca, Cambridge, England, United Kingdom and Waltham, Massachusetts
| | - Nicola Lindsay
- DMPK, Oncology, Oncology R&D, AstraZeneca, Cambridge, England, United Kingdom and Waltham, Massachusetts
| | - Aaron Smith
- DMPK, Oncology, Oncology R&D, AstraZeneca, Cambridge, England, United Kingdom and Waltham, Massachusetts
| | - Joanne Wilson
- DMPK, Oncology, Oncology R&D, AstraZeneca, Cambridge, England, United Kingdom and Waltham, Massachusetts
| | - Karen Roberts
- Discovery Science, BioPharmaceuticals R&D, AstraZeneca, Cambridge, England, United Kingdom
| | - Michael Tonge
- Discovery Science, BioPharmaceuticals R&D, AstraZeneca, Cambridge, England, United Kingdom
| | - Philip Hopcroft
- Discovery Science, BioPharmaceuticals R&D, AstraZeneca, Cambridge, England, United Kingdom
| | - Sophie E Willis
- Translational Medicine, Oncology R&D, AstraZeneca, Cambridge, England, United Kingdom
| | - Martine P Roudier
- Translational Medicine, Oncology R&D, AstraZeneca, Cambridge, England, United Kingdom
| | - Claire Rooney
- Translational Medicine, Oncology R&D, AstraZeneca, Cambridge, England, United Kingdom
| | | | - Patricia Jaaks
- Wellcome Sanger Institute, Cambridge, England, United Kingdom
| | | | | | | | - Richard A Ward
- Medicinal Chemistry, Oncology R&D, AstraZeneca, Cambridge, England, United Kingdom
| | | | | | | | - Paul D Smith
- Bioscience, Oncology R&D, AstraZeneca, Cambridge, England, United Kingdom
| |
Collapse
|
3
|
Taylor MA, Hughes AM, Walton J, Coenen-Stass AML, Magiera L, Mooney L, Bell S, Staniszewska AD, Sandin LC, Barry ST, Watkins A, Carnevalli LS, Hardaker EL. Longitudinal immune characterization of syngeneic tumor models to enable model selection for immune oncology drug discovery. J Immunother Cancer 2019; 7:328. [PMID: 31779705 PMCID: PMC6883640 DOI: 10.1186/s40425-019-0794-7] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Accepted: 10/30/2019] [Indexed: 02/02/2023] Open
Abstract
Background The ability to modulate immune-inhibitory pathways using checkpoint blockade antibodies such as αPD-1, αPD-L1, and αCTLA-4 represents a significant breakthrough in cancer therapy in recent years. This has driven interest in identifying small-molecule-immunotherapy combinations to increase the proportion of responses. Murine syngeneic models, which have a functional immune system, represent an essential tool for pre-clinical evaluation of new immunotherapies. However, immune response varies widely between models and the translational relevance of each model is not fully understood, making selection of an appropriate pre-clinical model for drug target validation challenging. Methods Using flow cytometry, O-link protein analysis, RT-PCR, and RNAseq we have characterized kinetic changes in immune-cell populations over the course of tumor development in commonly used syngeneic models. Results This longitudinal profiling of syngeneic models enables pharmacodynamic time point selection within each model, dependent on the immune population of interest. Additionally, we have characterized the changes in immune populations in each of these models after treatment with the combination of α-PD-L1 and α-CTLA-4 antibodies, enabling benchmarking to known immune modulating treatments within each model. Conclusions Taken together, this dataset will provide a framework for characterization and enable the selection of the optimal models for immunotherapy combinations and generate potential biomarkers for clinical evaluation in identifying responders and non-responders to immunotherapy combinations.
Collapse
Affiliation(s)
- Molly A Taylor
- Oncology R&D, Research and Early Development, Bioscience, AstraZeneca, Francis Crick Ave, Cambridge, CB2 0SL, UK.
| | - Adina M Hughes
- Oncology R&D, Research and Early Development, Bioscience, AstraZeneca, Francis Crick Ave, Cambridge, CB2 0SL, UK
| | - Josephine Walton
- Oncology R&D, Research and Early Development, Bioscience, AstraZeneca, Francis Crick Ave, Cambridge, CB2 0SL, UK
| | - Anna M L Coenen-Stass
- Oncology R&D, Research and Early Development, Bioscience, AstraZeneca, Francis Crick Ave, Cambridge, CB2 0SL, UK
| | - Lukasz Magiera
- Oncology R&D, Research and Early Development, Bioscience, AstraZeneca, Francis Crick Ave, Cambridge, CB2 0SL, UK
| | - Lorraine Mooney
- Oncology R&D, Research and Early Development, Bioscience, AstraZeneca, Francis Crick Ave, Cambridge, CB2 0SL, UK.,Present Address: Alderley Park Limited, Preclinical Services, Alderley Park, Macclesfield, SK10 4TG, UK
| | - Sigourney Bell
- Oncology R&D, Research and Early Development, Bioscience, AstraZeneca, Francis Crick Ave, Cambridge, CB2 0SL, UK
| | - Anna D Staniszewska
- Oncology R&D, Research and Early Development, Bioscience, AstraZeneca, Francis Crick Ave, Cambridge, CB2 0SL, UK
| | - Linda C Sandin
- Oncology R&D, Research and Early Development, Bioscience, AstraZeneca, Francis Crick Ave, Cambridge, CB2 0SL, UK
| | - Simon T Barry
- Oncology R&D, Research and Early Development, Bioscience, AstraZeneca, Francis Crick Ave, Cambridge, CB2 0SL, UK
| | - Amanda Watkins
- Oncology R&D, Research and Early Development, Bioscience, AstraZeneca, Francis Crick Ave, Cambridge, CB2 0SL, UK
| | - Larissa S Carnevalli
- Oncology R&D, Research and Early Development, Bioscience, AstraZeneca, Francis Crick Ave, Cambridge, CB2 0SL, UK
| | - Elizabeth L Hardaker
- Oncology R&D, Research and Early Development, Bioscience, AstraZeneca, Francis Crick Ave, Cambridge, CB2 0SL, UK
| |
Collapse
|
4
|
van Hooren L, Sandin LC, Moskalev I, Ellmark P, Dimberg A, Black P, Tötterman TH, Mangsbo SM. Local checkpoint inhibition of CTLA-4 as a monotherapy or in combination with anti-PD1 prevents the growth of murine bladder cancer. Eur J Immunol 2016; 47:385-393. [PMID: 27873300 DOI: 10.1002/eji.201646583] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Revised: 10/14/2016] [Accepted: 11/18/2016] [Indexed: 12/15/2022]
Abstract
Checkpoint blockade of CTLA-4 results in long-lasting survival benefits in metastatic cancer patients. However, patients treated with CTLA-4 blockade have suffered from immune-related adverse events, most likely due to the breadth of the induced T-cell activation. Here, we investigated the efficacy of a local low-dose anti-CTLA-4 administration for treatment of subcutaneous or orthotopic murine bladder 49 (MB49) bladder carcinoma in C57BL/6 mice. When MB49 tumors were grown s.c., peritumoral (p.t.) injection of anti-CTLA-4 treatment was equally effective as intravenous or s.c. (nontumor bearing flank) administration. Notably, p.t. injection was associated with lower circulating antibody levels and decreased IL-6 serum levels as compared to systemic treatment. Ultrasound-guided intratumoral anti-CTLA-4 antibody treatment of orthotopically growing MB49 tumors resulted in tumor regression, with more than tenfold reduction in systemic antibody levels as compared to i.v. or s.c. administration, in line with the compartmentally restrained nature of the bladder. Local anti-CTLA-4 therapy in combination with anti-PD-1 therapy resulted in complete responses, superior to each therapy alone. In addition, p.t. anti-CTLA-4 therapy was potentiated by depletion of regulatory T cells. Our results demonstrate that local anti-CTLA-4 antibody therapy is equally effective as systemic administration, but reduces systemic antibody levels and cytokine release, and enhances the response to anti-PD1 therapy.
Collapse
Affiliation(s)
- Luuk van Hooren
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Linda C Sandin
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Igor Moskalev
- Vancouver Prostate Centre, University of British Columbia, Vancouver, Canada
| | - Peter Ellmark
- Alligator Bioscience AB, Lund, Sweden.,Department of Immunotechnology, Lund University, Lund, Sweden
| | - Anna Dimberg
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | | | - Thomas H Tötterman
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Sara M Mangsbo
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| |
Collapse
|
5
|
Sandin LC, Eriksson F, Ellmark P, Loskog AS, Tötterman TH, Mangsbo SM. Local CTLA4 blockade effectively restrains experimental pancreatic adenocarcinoma growth in vivo. Oncoimmunology 2014; 3:e27614. [PMID: 24701377 PMCID: PMC3962508 DOI: 10.4161/onci.27614] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2013] [Revised: 12/20/2013] [Accepted: 12/21/2013] [Indexed: 12/13/2022] Open
Abstract
Antibody-mediated blockade of CTLA4 has been shown to be effective in treating a select group of patients with late-stage melanoma. The precise mechanism underlying the clinical activity of CTLA4 immunotherapy is poorly understood, although recent experimental findings indicate that antibody-mediated depletion of regulatory T cells (Tregs) in the tumor microenvironment plays a key role in efficacious antitumor responses. In the current study, we used an experimental model of pancreatic adenocarcinoma to compare the antitumor efficacy of peritumoral low-dose anti-CTLA4 monoclonal antibody (mAb) administration to that of a commonly utilized systemic high-dose anti-CTLA4 regimen. We selected pancreatic adenocarcinoma as it presents a particular challenge to clinicians due to its aggressive behavior, metastatic spread and limited treatment options. Furthermore, Fc gamma receptor (FcγR)-dense myeloid cells commonly infiltrate pancreatic tumors, such that these tumor types exhibit increased susceptibility to CTLA4 antibody-targeted Treg depletion via antibody-dependent cell-mediated cytotoxicity (ADCC). Locally administered anti-CTLA4 mAb effectively reduced tumor growth at a low dose and no additional anti-tumor effects were apparent when increasing the dose or number of injections. No significant difference in overall survival was seen when comparing locally administered low-dose with standard systemic high-dose CTLA4 blockade therapy, and both delivery routes led to increased tumor-infiltrating effector T cells and reduced Treg cells. As opposed to low-dose peritumoral treatment, high-dose systemic therapy stimulated the accumulation of Tregs in secondary lymphoid organs, an effect that could potentially counteract the antitumor immunotherapeutic benefit of CTLA4 blockade. Our study confirms previous findings that local administration of low-dose anti-CTLA4 antibody generates sustained antitumor effects and provides rationale to devise ultrasound-guided intratumoral anti-CTLA4 antibody injection regimens to treat patients with pancreatic adenocarcinoma and other types of solid tumors. In support, clinical relevancy could include reduced immune-related adverse events by limiting systemic antibody spread to immune cell-dense organs.
Collapse
Affiliation(s)
- Linda C Sandin
- Department of Immunology, Genetics and Pathology; Clinical Immunology; Uppsala University; Uppsala, Sweden
| | - Fredrik Eriksson
- Department of Immunology, Genetics and Pathology; Clinical Immunology; Uppsala University; Uppsala, Sweden
| | - Peter Ellmark
- Alligator Bioscience AB; Lund, Sweden ; Department of Immunotechnology; Lund University; Lund, Sweden
| | - Angelica Si Loskog
- Department of Immunology, Genetics and Pathology; Clinical Immunology; Uppsala University; Uppsala, Sweden
| | - Thomas H Tötterman
- Department of Immunology, Genetics and Pathology; Clinical Immunology; Uppsala University; Uppsala, Sweden
| | - Sara M Mangsbo
- Department of Immunology, Genetics and Pathology; Clinical Immunology; Uppsala University; Uppsala, Sweden
| |
Collapse
|
6
|
Sandin LC, Tötterman TH, Mangsbo SM. Local immunotherapy based on agonistic CD40 antibodies effectively inhibits experimental bladder cancer. Oncoimmunology 2014; 3:e27400. [PMID: 24701374 PMCID: PMC3962505 DOI: 10.4161/onci.27400] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2013] [Accepted: 12/02/2013] [Indexed: 12/01/2022] Open
Abstract
Local immunotherapy resurfaces in the field of cancer as a potential way to cure localized and metastatic disease with limited toxic effects. We have recently demonstrated that local administration of agonistic CD40 antibodies can cure localized as well as disseminated bladder neoplasms. This approach reduces the circulating concentrations of antibodies that would result from systemic delivery, hence resulting in limited toxicity.
Collapse
Affiliation(s)
- Linda C Sandin
- Department of Immunology, Genetics and Pathology; Uppsala University; Uppsala, Sweden
| | - Thomas H Tötterman
- Department of Immunology, Genetics and Pathology; Uppsala University; Uppsala, Sweden
| | - Sara M Mangsbo
- Department of Immunology, Genetics and Pathology; Uppsala University; Uppsala, Sweden
| |
Collapse
|
7
|
Freiburghaus C, Broos S, Sandin LC, Tötterman TH, Akagi T, Akashi M, Borrebaeck C, Ellmark P, Lindstedt M. Synergistic effects of agonistic costimulatory antibodies adsorbed to amphiphilic poly(γ-glutamic acid) nanoparticles. J Immunother Cancer 2013. [PMCID: PMC3991098 DOI: 10.1186/2051-1426-1-s1-p128] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
|
8
|
Sandin LC, Orlova A, Gustafsson E, Ellmark P, Tolmachev V, Tötterman TH, Mangsbo SM. Locally delivered CD40 agonist antibody accumulates in secondary lymphoid organs and eradicates experimental disseminated bladder cancer. Cancer Immunol Res 2013; 2:80-90. [PMID: 24778163 DOI: 10.1158/2326-6066.cir-13-0067] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Immunotherapy with intratumoral injection of adenoviral vectors expressing CD40L has yielded positive results in experimental and clinical bladder cancer. We therefore hypothesized that anti-CD40 antibody would be effective in this setting. Agonistic CD40 antibodies were developed as vaccine adjuvants but have later been used as treatment of advanced solid tumors and hematologic cancers. Systemic anti-CD40 therapy has been associated with immune-related adverse events, such as cytokine release syndrome and liver toxicity, and local delivery is an attractive approach that could reduce toxicity. Herein, we compared local and systemic anti-CD40 antibody delivery to evaluate efficacy, toxicity, and biodistribution in the experimental MB49 bladder cancer model. Antitumor effects were confirmed in the B16 model. In terms of antitumor efficacy, local anti-CD40 antibody stimulation was superior to systemic therapy at an equivalent dose and CD8 T cells were crucial for tumor growth inhibition. Both administration routes were dependent on host CD40 expression for therapeutic efficacy. In vivo biodistribution studies revealed CD40-specific antibody accumulation in the tumor-draining lymph nodes and the spleen, most likely reflecting organs with frequent target antigen-expressing immune cells. Systemic administration led to higher antibody concentrations in the liver and blood compared with local delivery, and was associated with elevated levels of serum haptoglobin. Despite the lack of a slow-release system, local anti-CD40 therapy was dependent on tumor antigen at the injection site for clearance of distant tumors. To summarize, local low-dose administration of anti-CD40 antibody mediates antitumor effects in murine models with reduced toxicity and may represent an attractive treatment alternative in the clinic.
Collapse
Affiliation(s)
- Linda C Sandin
- Authors' Affiliations: Department of Immunotechnology, Lund University, Lund, Sweden
| | | | | | | | | | | | | |
Collapse
|
9
|
Broos S, Sandin LC, Apel J, Tötterman TH, Akagi T, Akashi M, Borrebaeck CA, Ellmark P, Lindstedt M. Synergistic augmentation of CD40-mediated activation of antigen-presenting cells by amphiphilic poly(γ-glutamic acid) nanoparticles. Biomaterials 2012; 33:6230-9. [DOI: 10.1016/j.biomaterials.2012.05.011] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2012] [Accepted: 05/05/2012] [Indexed: 12/25/2022]
|
10
|
Lindqvist C, Sandin LC, Fransson M, Loskog A. Local AdCD40L gene therapy is effective for disseminated murine experimental cancer by breaking T-cell tolerance and inducing tumor cell growth inhibition. J Immunother 2010; 32:785-92. [PMID: 19752755 DOI: 10.1097/cji.0b013e3181acea69] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
CD40 ligand (CD40L) is one of the most potent stimulators of Th1-type immunity through its maturation of dendritic cells that, in turn, stimulate effector cells such as T cells and NK cells. Lately, CD40-mediated cell growth inhibition and apoptosis have been in focus for the development of novel cancer treatment regiments, including recombinant soluble CD40L or CD40-stimulating antibodies. In this study, intravesical CD40L gene transfer through adenoviral vectors (AdCD40L) was used to treat an aggressive model of disseminated bladder cancer (MB49/C57BL/6). Three weekly AdCD40L vector instillations increased overall survival of tumor-bearing mice (mean 18.5 d, control mice 13 d). Furthermore, bladder tumors were eradicated (2 of 10) simultaneously as lung metastases (6 of 10) were cleared. FoxP3 levels were similar in the tumors of AdCD40L-treated mice and control mice but the tumor-infiltrating effector T cells in AdCD40L-treated mice were cytotoxic (CD107a+) in contrast to those in control-treated tumors. Furthermore, AdCD40L gene therapy could induce cell growth inhibition and cell death in the MB49 tumor cells in vitro and in vivo. However, this effect was not potent enough to cure growing tumors in immunodeficient mice. In conclusion, AdCD40L gene therapy is potent for disseminated cancer both by activation of T cells and controlling tumor cell growth and viability.
Collapse
Affiliation(s)
- Camilla Lindqvist
- Clinical Immunology Division, Rudbeck Laboratory, Uppsala University, 751 85 Uppsala, Sweden
| | | | | | | |
Collapse
|