Engineering of Nanobodies Recognizing the Human Chemokine Receptor CCR7

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International Journal of Molecular Sciences. 2019, 20(10), 2597. eISSN 1422-0067. Available under: doi: 10.3390/ijms20102597
Zusammenfassung

The chemokine receptor CCR7 plays a pivotal role in health and disease. In particular, CCR7 controls homing of antigen-bearing dendritic cells and T cells to lymph nodes, where adaptive immune responses are initiated. However, CCR7 also guides T cells to inflamed synovium and thereby contributes to rheumatoid arthritis and promotes cancer cell migration and metastasis formation. Nanobodies have recently emerged as versatile tools to study G-protein-coupled receptor functions and are being tested in diagnostics and therapeutics. In this study, we designed a strategy to engineer novel nanobodies recognizing human CCR7. We generated a nanobody library based on a solved crystal structure of the nanobody Nb80 recognizing the β2-adrenergic receptor (β2AR) and by specifically randomizing two segments within complementarity determining region 1 (CDR1) and CDR3 of Nb80 known to interact with β2AR. We fused the nanobody library to one half of split-YFP in order to identify individual nanobody clones interacting with CCR7 fused to the other half of split-YFP using bimolecular fluorescence complementation. We present three novel nanobodies, termed Nb1, Nb5, and Nb38, that recognize human CCR7 without interfering with G-protein-coupling and downstream signaling. Moreover, we were able to follow CCR7 trafficking upon CCL19 triggering using Nb1, Nb5, and Nb38.

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Fachgebiet (DDC)
570 Biowissenschaften, Biologie
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chemokine receptor; CCR7; chemokines; CCL19; nanobodies; 2-adrenergic receptor; bimolecular fluorescence complementation; split-luciferase complementation
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ISO 690JAKOBS, Barbara D., Lisa SPANNAGEL, Vladimir PURVANOV, Edith UETZ-VON ALLMEN, Christoph MATTI, Daniel F. LEGLER, 2019. Engineering of Nanobodies Recognizing the Human Chemokine Receptor CCR7. In: International Journal of Molecular Sciences. 2019, 20(10), 2597. eISSN 1422-0067. Available under: doi: 10.3390/ijms20102597
BibTex
@article{Jakobs2019-05-27Engin-46455,
  year={2019},
  doi={10.3390/ijms20102597},
  title={Engineering of Nanobodies Recognizing the Human Chemokine Receptor CCR7},
  number={10},
  volume={20},
  journal={International Journal of Molecular Sciences},
  author={Jakobs, Barbara D. and Spannagel, Lisa and Purvanov, Vladimir and Uetz-von Allmen, Edith and Matti, Christoph and Legler, Daniel F.},
  note={Article Number: 2597}
}
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