Approach to map nanotopography of cell surface receptors.
Commun Biol
; 5(1): 218, 2022 03 09.
Article
en En
| MEDLINE
| ID: mdl-35264712
Cells communicate with their environment via surface receptors, but nanoscopic receptor organization with respect to complex cell surface morphology remains unclear. This is mainly due to a lack of accessible, robust and high-resolution methods. Here, we present an approach for mapping the topography of receptors at the cell surface with nanometer precision. The method involves coating glass coverslips with glycine, which preserves the fine membrane morphology while allowing immobilized cells to be positioned close to the optical surface. We developed an advanced and simplified algorithm for the analysis of single-molecule localization data acquired in a biplane detection scheme. These advancements enable direct and quantitative mapping of protein distribution on ruffled plasma membranes with near isotropic 3D nanometer resolution. As demonstrated successfully for CD4 and CD45 receptors, the described workflow is a straightforward quantitative technique to study molecules and their interactions at the complex surface nanomorphology of differentiated metazoan cells.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Receptores de Superficie Celular
/
Nanotecnología
Límite:
Animals
Idioma:
En
Revista:
Commun Biol
Año:
2022
Tipo del documento:
Article
País de afiliación:
Alemania
Pais de publicación:
Reino Unido