In vitro and in vivo degradation of programmed cell death ligand 1 (PD-L1) by a proteolysis targeting chimera (PROTAC)
Abstract
Immunotherapy via immune checkpoints blockade has aroused the attention of researchers worldwide. Inhibition of the programmed cell death-1 (PD-1)/programmed cell death-ligand 1 (PD-L1) interaction has been one of the most promising immunotherapy strategies. Several neutralizing antibodies targeting this interaction have been developed, which have already achieved considerable clinical success. Additionally, numerous pharmaceutical companies have been committed to develop small molecules which could block the interaction between PD-1 and PD-L1. In this study, a novel PROTAC molecule 21a was developed, and effectively induced the degradation of PD-L1 protein in various malignant cells in a proteasome-dependent manner. Moreover, compound 21a could significantly reduce PD-L1 protein levels of MC-38 cancer cells in vivo, by which promoted the invasion of CD8+ T cells and inhibited the growth of MC-38 in vivo. This PROTAC molecule could be used as a novel and alternative strategy for cancer immunotherapy.
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Wang et al. showed that PDL1 could be degraded using a CRBN-based PROTAC linked to BMS-37 PDL1 warhead in MC-38 cells.
“More recently, Wang et al.54 showed that programmed cell death ligand 1 (PDL1) — an immune checkpoint protein that resides on the cell surface to carry out its natural function but circulates between the surface and the cytoplasm — could be degraded using a CRBN-based PROTAC linked to the BMS-37 PDL1 warhead in MC-38 cells.”
From PROTAC targeted protein degraders: the past is prologue (2022) · cites this paper as [54]
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- Authors
- Wang, Y., Zhou, Y., Cao, S., Sun, Y., Dong, Z., Li, C., Wang, H., Yao, Y., Yu, H., Song, X., Li, M., Wang, J., Wei, M., Yang, G., & Yang, C.
- Affiliations
- Nankai University (CN)
- Tianjin Medical University Cancer Institute and Hospital (CN)
- Corresponding author
- Wang, Jiefu
- Wei, Mingming
- Yang, Guang
- ORCID
- Venue
- Bioorganic Chemistry
- Publisher
- Elsevier BV
- Published
- 2021-06
- Volume
- 111
- Pages
- 104833
- ISSN
- 0045-2068 (ISSN-L)
- OpenAlex
- W3139348989
- Cited by
- 96
- References
- 33
- Citations by year
- 2026: 17 · 2025: 22 · 2024: 25 · 2023: 17 · 2022: 13 · 2021: 2
- FWCI
- 4.55
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- Locations
- Bioorganic Chemistry (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Degradation and Inhibitors
- Health Sciences › Medicine › Oncology › Cancer Immunotherapy and Biomarkers
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Chemical Synthesis and Analysis
- Keywords
- PD-L1, PROTACs, PD-1/PD-L1 interaction, immune checkpoint blockade, protein degradation, proteasomal degradation, cancer immunotherapy, CD8+ T cell infiltration, small molecule inhibitors
- MeSH terms
- Amines, Animals, Antineoplastic Agents, Dose-Response Relationship, Drug, Drug Screening Assays, Antitumor, Female, Mice, Inbred C57BL, Structure-Activity Relationship, Molecular Structure, Cell Line, Tumor, Cell Proliferation, Mice, Proteolysis, B7-H1 Antigen
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