Engineering a Smart Agent for Enhanced Immunotherapy Effect by Simultaneously Blocking PD‐L1 and CTLA‐4
Open accessAbstract
Combinations of immune checkpoint therapies show encouraging results in the treatment of many human cancers. However, the higher costs and greater side effects of such combinations compared with single‐agent immunotherapies limit their further applications. In this work, a novel smart agent, KN046@19 F‐ZIF‐8, is developed to overcome these limitations. KN046 is a novel recombinant humanized PD‐L1/CTLA‐4 bispecific single‐domain antibody‐Fc fusion protein, which can bind to both PD‐L1 and CTLA‐4 effectively. ZIF‐8 is a smart delivery system, which can safely and effectively deliver KN406 to a tumor. In vitro and in vivo results demonstrate that the smart agent KN046@19 F‐ZIF‐8 not only improves the immune response rate of the antibody drug in treatment of tumors but also reduces its toxic side effects, thereby achieving excellent antitumor efficacy. This study provides an engineering strategy for clinical applications of a more effective immunotherapy.
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Numerous bispecific antibodies have been developed, including CTLA-4 × PD-L1 (KN046), CTLA-4 × PD-1 (MGD019 and MEDI5752), LAG-3 × PD-L1 (IBI323), LAG-3 × PD-1 (Tebotelimab), TIM-3 × PD-L1 (LY3415244), TIM-3 × PD-1, and TIGIT×PD-L1.
“Numerous bispecific antibodies have been developed, including CTLA-4 × PD-L1 (KN046) [281], CTLA-4 × PD-1 (MGD019 and MEDI5752) [282, 283], LAG-3 × PD-L1 (IBI323) [284], LAG-3 × PD-1 (Tebotelimab) [285], TIM-3 × PD-L1 (LY3415244) [286], TIM-3 × PD-1 [305], TIGIT×PD-L1 [287].”
From Combination strategies with PD-1/PD-L1 blockade: current advances and future directions (2022) · cites this paper as [281]
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- Authors
- Jiang, C., Zhang, L., Xu, X., Qi, M., Zhang, J., He, S., Tian, Q., & Song, S.
- Affiliations
- Shanghai Medical College of Fudan University (CN)
- Shanghai University of Medicine and Health Sciences (CN)
- Corresponding author
- Tian, Qiwei
- Song, Shaoli
- Venue
- Advanced Science
- Publisher
- Wiley
- Published
- 2021-09-02
- Volume
- 8
- Issue
- 20
- Pages
- e2102500-e2102500
- ISSN
- 2198-3844 (ISSN-L)
- PMC
- PMC8529437
- OpenAlex
- W3197356409
- Cited by
- 77
- References
- 46
- Citations by year
- 2026: 9 · 2025: 13 · 2024: 22 · 2023: 19 · 2022: 12 · 2021: 2
- FWCI
- 5.00
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- Advanced Science (publishedVersion, cc-by)
- Europe PMC (PubMed Central) (publishedVersion, other-oa)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Funders
- National Natural Science Foundation of China (81771861, 81971648)
- Topics
- Health Sciences › Medicine › Oncology › Cancer Immunotherapy and Biomarkers
- Physical Sciences › Engineering › Biomedical Engineering › Nanoplatforms for cancer theranostics
- Physical Sciences › Materials Science › Biomaterials › Nanoparticle-Based Drug Delivery
- Keywords
- ZIF-8, smart drug delivery, immune checkpoint blockade, cancer immunotherapy, tumor targeting, reduced side effects
- MeSH terms
- Immune Checkpoint Inhibitors, Animals, Antineoplastic Agents, Humans, Immunotherapy, Neoplasms, Recombinant Fusion Proteins, Antibodies, Bispecific, Xenograft Model Antitumor Assays, Cell Line, Tumor, Cell Proliferation, Mice, B7-H1 Antigen, CTLA-4 Antigen, Single-Domain Antibodies
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