6M6F | pdb_00006m6f

Dynamic folding modulation generates FGF21 variant against diabetes.

Zhu, L.,&nbspZhao, H.,&nbspLiu, J.,&nbspCai, H.,&nbspWu, B.,&nbspLiu, Z.,&nbspZhou, S.,&nbspLiu, Q.,&nbspLi, X.,&nbspBao, B.,&nbspLiu, J.,&nbspDai, H.,&nbspWang, J.

(2021) EMBO Rep&nbsp22: e51352-e51352

• PubMed:&nbsp33295692&nbspSearch on PubMedSearch on PubMed Central
• DOI:&nbsphttps://doi.org/10.15252/embr.202051352
• Primary Citation of Related Structures: &nbsp
  6M6E, 6M6F


• PubMed Abstract:&nbsp
  

  Fibroblast growth factor 21 (FGF21) is a regulator of glucose and lipid metabolism. It has been widely considered as a promising candidate for the treatment of type 2 diabetes mellitus (T2DM) and other related metabolic disorders. However, lack of structural and dynamic information has limited FGF21-based drug development. Here, using nuclear magnetic resonance (NMR) spectroscopy, we determine the structure of FGF21 and find that its non-canonical flexible β-trefoil conformation affects the folding of β2-β3 hairpin and further overall protein stability. To modulate folding dynamics, we designed an FGF21-FGF19 chimera, FGF21 ^SS . As expected, FGF21 ^SS shows better thermostability without inducing hepatocyte proliferation. Functional characterization of FGF21 ^SS shows its better insulin sensitivity, reduced inflammation in 3T3-L1 adipocytes, and lower blood glucose and insulin levels in ob/ob mice compared with wild type. Our dynamics-based rational design provides a promising approach for FGF21-based therapeutic development against T2DM.

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Organizational Affiliation:&nbsp

High Magnetic Field Laboratory, CAS Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, China.