PD-L1 is an activation-independent marker of brown adipocytes

PD-L1 is an activation-independent marker of brown adipocytes

Programmed death ligand 1 (PD-L1) is expressed on a number of immune and cancer cells, where it can downregulate antitumor immune responses. Its expression has been linked to metabolic changes in these cells. Here we develop a radiolabeled camelid single-domain antibody (anti-PD-L1 VHH) to track PD-...

Full description

Bibliographic Details
Main Authors: Ingram, Jessica R., Dougan, Michael, Rashidian, Mohammad, Knoll, Marko, Keliher, Edmund J., Garrett, Sarah, Garforth, Scott, Blomberg, Olga S., Espinosa, Camilo, Bhan, Atul, Almo, Steven C., Weissleder, Ralph, Dougan, Stephanie K., Lodish, Harvey F, Ploegh, Hidde
Other Authors: Massachusetts Institute of Technology. Department of Biology
Format: Article
Published: Springer Nature 2018
Online Access:http://hdl.handle.net/1721.1/115203
https://orcid.org/0000-0002-7029-7415
https://orcid.org/0000-0002-1090-6071
Description
Summary:Programmed death ligand 1 (PD-L1) is expressed on a number of immune and cancer cells, where it can downregulate antitumor immune responses. Its expression has been linked to metabolic changes in these cells. Here we develop a radiolabeled camelid single-domain antibody (anti-PD-L1 VHH) to track PD-L1 expression by immuno-positron emission tomography (PET). PET-CT imaging shows a robust and specific PD-L1 signal in brown adipose tissue (BAT). We confirm expression of PD-L1 on brown adipocytes and demonstrate that signal intensity does not change in response to cold exposure or β-adrenergic activation. This is the first robust method of visualizing murine brown fat independent of its activation state.

Similar Items