Microglia States and Nomenclature: A Field At Its Crossroads

Publication alert! IALH Research Fellow Marie-Eve Tremblay has co-authored a new book chapter entitled Microglia States and Nomenclature: A Field At Its Crossroads. Other authors include Rosa C.Paolicelli, Amanda Sierra, Beth Stevens, Adriano Aguzzi, Bahareh Ajami, Ido Amit, Etienne Audinat, Ingo Bechmann, Mariko Bennett, Frederick Bennett, Alain Bessis, Knut Biber, Staci Bilbo, Mathew Blurton-Jones, Erik Boddeke, Dora Brites, Bert Brône, Guy C. Brown, Oleg Butovsky…Tony Wyss-Coray. The chapter was published in Neuron (Volume 110, Issue 21).

Summary:

Microglial research has advanced considerably in recent decades yet has been constrained by a rolling series of dichotomies such as “resting versus activated” and “M1 versus M2.” This dualistic classification of good or bad microglia is inconsistent with the wide repertoire of microglial states and functions in development, plasticity, aging, and diseases that were elucidated in recent years. New designations continuously arising in an attempt to describe the different microglial states, notably defined using transcriptomics and proteomics, may easily lead to a misleading, although unintentional, coupling of categories and functions. To address these issues, we assembled a group of multidisciplinary experts to discuss our current understanding of microglial states as a dynamic concept and the importance of addressing microglial function. Here, we provide a conceptual framework and recommendations on the use of microglial nomenclature for researchers, reviewers, and editors, which will serve as the foundations for a future white paper.

To read the full chapter, and full list of authors, see https://doi.org/10.1016/j.neuron.2022.10.020