Discovery and characterization of a functional scFv for CCR2 inhibition via an extracellular loop

التفاصيل البيبلوغرافية
العنوان: Discovery and characterization of a functional scFv for CCR2 inhibition via an extracellular loop
المؤلفون: Natalie E, Jasiewicz, Adam D, Brown, Michael, Deci, Silvina, Matysiak, Shelton, Earp, Juliane, Nguyen
المصدر: International Journal of Pharmaceutics. 632:122547
بيانات النشر: Elsevier BV, 2023.
سنة النشر: 2023
مصطلحات موضوعية: Pharmaceutical Science
الوصف: The chemokine receptor CCR2 plays a key role in cellular migration and inflammatory processes. While tremendous progress has been made in elucidating CCR2 function and inhibition, the majority of approaches target its N-terminal domain and less is known about the function of the remaining extracellular loops and their potential as targets. Here, we used phage display to identify an antibody-derived scFv (single chain variable fragment) clone that specifically targets the second extracellular epitope of CCR2 (ECL2) for inhibition. Using in silico molecular docking, we identified six potential primary binding conformations of the novel scFv to the specified CCR2 epitope. In silico molecular dynamic analysis was used to determine conformational stability and identify protein-protein interactions. Umbrella sampling of a range of configurations with incrementally increasing separation of scFv and target generated by force pulling simulations was used to calculate binding energies. Downstream characterization by ELISA showed high binding affinity of the ECL2-scFv to CCR2. Furthermore, we showed that blocking the second extracellular loop inhibits macrophage migration and polarized macrophage towards M1 inflammatory cytokine production as potently as the toll-like receptor agonist, LPS. These studies highlight the applicability of epitope-specific targeting, emphasize the importance of in silico predictive modeling, and warrant further investigation into the role of the remaining epitopes of CCR2.
تدمد: 0378-5173
DOI: 10.1016/j.ijpharm.2022.122547
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d046bea47cebb5979cf56cdcfb3b0242
https://doi.org/10.1016/j.ijpharm.2022.122547
Rights: CLOSED
رقم الانضمام: edsair.doi.dedup.....d046bea47cebb5979cf56cdcfb3b0242
قاعدة البيانات: OpenAIRE
الوصف
تدمد:03785173
DOI:10.1016/j.ijpharm.2022.122547