التفاصيل البيبلوغرافية
| العنوان: |
Development of Glycosylation-Modified D PPA-1 Compounds as Innovative PD-1/PD-L1 Blockers: Design, Synthesis, and Biological Evaluation. |
| المؤلفون: |
Deng, Peng, Dong, Xiaodan, Wu, Ziyuan, Hou, Xixi, Mao, Longfei, Guo, Jingjing, Zhao, Wenshan, Peng, Chune, Zhang, Zhe, Peng, Lizeng |
| المصدر: |
Molecules; Apr2024, Vol. 29 Issue 8, p1898, 13p |
| مصطلحات موضوعية: |
PROGRAMMED cell death 1 receptors, PROGRAMMED death-ligand 1, IMMUNE checkpoint proteins, PEPTIDES, GLYCOPEPTIDES, T cells, GENE enhancers |
| مستخلص: |
In the context of peptide drug development, glycosylation plays a pivotal role. Accordingly, L-type peptides were synthesized predicated upon the PD-1/PD-L1 blocker DPPA-1. Subsequent glycosylation resulted in the production of two distinct glycopeptides, D-glu-LPPA-1 and D-gal-LPPA-1, by using D-glucose (D-glu) and D-galactose (D-gal), respectively, during glycosylation. Both glycopeptides significantly inhibited the interaction between PD-1 and PD-L1, and the measured half maximal inhibitory concentrations (IC50s) were 75.5 μM and 101.9 μM for D-glu-LPPA-1 and D-gal-LPPA-1, respectively. Furthermore, D-gal-LPPA-1 displayed a pronounced ability to restore T-cell functionality. In an MC38 tumor-bearing mouse model, D-gal-LPPA-1 demonstrated a significant inhibitory effect. Notably, D-gal-LPPA-1 substantially augmented the abundance and functionality of CD8+ T cells in the tumor microenvironment. Additionally, in the lymph nodes and spleens, D-gal-LPPA-1 significantly increased the proportion of CD8+ T cells secreting interferon-gamma (IFN-γ). These strong findings position D-gal-LPPA-1 as a potent enhancer of the antitumor immune response in MC38 tumor-bearing mice, underscoring its potential as a formidable PD-1/PD-L1 blocking agent. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
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