Imaging resident and recruited macrophage contribution to Wallerian degeneration

Imaging resident and recruited macrophage contribution to Wallerian degeneration

 

 

 

 

 

 

Authors: Alexandre Boissonnas, Floriane Louboutin, Marie Laviron, Pierre-Louis Loyher, Elodie Reboussin, Sandrine Barthelemy, Annabelle Réaux-Le Goazigo, Christian S. Lobsiger, Béhazine Combadière, Stéphane Mélik Parsadaniantz, Christophe Combadière

 

 

Abstract

Wallerian degeneration (WD) is a process of autonomous distal degeneration of axons upon injury. Macrophages (MPs) of the peripheral nervous system (PNS) are the main cellular agent controlling this process. Some evidence suggests that resident PNS-MPs along with MPs of hematogenous origin may be involved, but whether these two subsets exert distinct functions is unknown. Combining MP-designed fluorescent reporter mice and coherent anti–Stokes Raman scattering (CARS) imaging of the sciatic nerve, we deciphered the spatiotemporal choreography of resident and recently recruited MPs after injury and unveiled distinct functions of these subsets, with recruited MPs being responsible for efficient myelin stripping and clearance and resident MPs being involved in axonal regrowth. This work provides clues to tackle selectively cellular processes involved in neurodegenerative diseases.

Graphical Abstract


Reference: Alexandre Boissonnas, Floriane Louboutin, Marie Laviron, Pierre-Louis Loyher, Elodie Reboussin, Sandrine Barthelemy, Annabelle Réaux-Le Goazigo, Christian S. Lobsiger, Béhazine Combadière, Stéphane Mélik Parsadaniantz, Christophe Combadière; Imaging resident and recruited macrophage contribution to Wallerian degeneration. J Exp Med 2 November 2020; 217 (11): e20200471. doi: https://doi.org/10.1084/jem.20200471

 

Product Highlights:

The authors used Bio X Cell’s anti-mouse CSF1R (CD115) (clone AFS98) in this research study.