Cited by 195Cancer Immunotherapy and BiomarkersTGF-β signaling in diseasesImmunotherapy and Immune Responses

M7824, a novel bifunctional anti-PD-L1/TGFβ Trap fusion protein, promotes anti-tumor efficacy as monotherapy and in combination with vaccine

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Knudson, Karin M., Hicks, Kristin C., Luo, Xiaoling, Chen, Jin-Qiu, Schlom, Jeffrey, Gameiro, Sofia R.·2018·OncoImmunology

Abstract

Tumors evade host immune surveillance through multiple mechanisms, including the generation of a tumor microenvironment that suppresses immune effector function. Secretion of TGFβ and upregulation of immune checkpoint programmed cell death ligand-1 (PD-L1) are two main contributors to immune evasion and tumor progression. Here, we examined the efficacy of a first-in-class bifunctional checkpoint inhibitor, the fusion protein M7824, comprising the extracellular domain of human TGFβRII (TGFβ Trap) linked to the C-terminus of human anti-PD-L1 heavy chain (αPD-L1). We demonstrate that M7824 reduces plasma TGFβ1, binds to PD-L1 in the tumor, and decreases TGFβ-induced signaling in the tumor microenvironment in mice. In murine breast and colon carcinoma models, M7824 decreased tumor burden and increased overall survival as compared to targeting TGFβ alone. M7824 treatment promoted CD8+ T cell and NK cell activation, and both of these immune populations were required for optimal M7824-mediated tumor control. M7824 was superior to TGFβ- or αPD-L1-targeted therapies when in combination with a therapeutic cancer vaccine. These findings demonstrate the value of using M7824 to simultaneously target TGFβ and PD-L1/PD-1 immunosuppressive pathways to promote anti-tumor responses and efficacy. The studies also support the potential clinical use of M7824 as a monotherapy or in combination with other immunotherapies, such as therapeutic cancer vaccines, including for patients who have progressed on αPD-L1/αPD-1 checkpoint blockade therapies.

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Crossref · 10.1080/2162402x.2018.1426519

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  • Antibodies against integrins β1, β6 and β8 selectively impair TGF-β1 activation.

    “Antibodies against integrins β1, β6 and β8 were shown to selectively impair TGF-β1 activation85,313–315”

    From TGFβ biology in cancer progression and immunotherapy (2021) · cites this paper as [314]

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Authors
Knudson, K. M., Hicks, K. C., Luo, X., Chen, J.-Q., Schlom, J., & Gameiro, S. R.
Affiliations
National Institutes of Health (US)
Corresponding author
Schlom, Jeffrey
Venue
OncoImmunology
Published
2018-02-14
Volume
7
Issue
5
Pages
e1426519
ISSN
  • 2162-4011 (ISSN-L)
  • 2162-402X
OpenAlex
W2783653336
Cited by
195
References
64
Citations by year
2026: 12 · 2025: 11 · 2024: 15 · 2023: 26 · 2022: 29 · 2021: 38 · 2020: 29 · 2019: 22 · 2018: 12
FWCI
9.49
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • OncoImmunology (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, public-domain)
  • PubMed Central (publishedVersion, public-domain)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • Cooperative Research and Development Agreement between the National Cancer Institute and EMD Serono, Inc. (CRADA 02666)
  • Intramural Research Program, CCR, NCI, NIH (ZIA BC 010944)
Topics
  • Health Sciences › Medicine › Oncology › Cancer Immunotherapy and Biomarkers
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › TGF-β signaling in diseases
  • Life Sciences › Immunology and Microbiology › Immunology › Immunotherapy and Immune Responses
Keywords
bifunctional fusion protein, PD-L1 inhibitors, TGF-βRII, TGF-β1, PD-L1, immune checkpoint blockade, tumor microenvironment, tumor immune evasion, therapeutic cancer vaccines, combination immunotherapy, CD8+ T cells, natural killer cells, breast cancer, colon cancer, antitumor immunity

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