Isolation of state-dependent monoclonal antibodies against the 12-transmembrane domain glucose transporter 4 using virus-like particles

Authors:
Publisher website
Google Scholar
Abstract
Significance: Generating mAbs against the native extracellular epitopes of multispanning membrane proteins is challenging, and as a result, few nonpeptidic mAbs against transporters have ever been isolated. Our approach here using virus-like particles and divergent host species for immunizations provides a means to overcome these challenges. The specific mAbs isolated here recognize native GLUT4 on the cell surface and can distinguish its different conformational states, thus representing some of the only state-specific mAbs ever isolated against any transporter. Epitope mapping of these mAbs revealed their binding sites as well as the mechanisms by which amino acids control the inward-open and outward-open states of GLUT4. Our studies demonstrate a valuable platform to isolate functional mAbs against important multispanning membrane proteins.
Funding Information
  • HHS | NIH | National Institute on Deafness and Other Communication Disorders (DC010105)
  • HHS | NIH | National Institute of General Medical Sciences (GM113556)

This publication has 51 references indexed in Scilit: