Untangling the Origin and Function of Granulovacuolar Degeneration Bodies in Neurodegenerative Proteinopathies
Overview
Affiliations
In the brains of tauopathy patients, tau pathology coincides with the presence of granulovacuolar degeneration bodies (GVBs) both at the regional and cellular level. Recently, it was shown that intracellular tau pathology causes GVB formation in experimental models thus explaining the strong correlation between these neuropathological hallmarks in the human brain. These novel models of GVB formation provide opportunities for future research into GVB biology, but also urge reevaluation of previous post-mortem observations. Here, we review neuropathological data on GVBs in tauopathies and other neurodegenerative proteinopathies. We discuss the possibility that intracellular aggregates composed of proteins other than tau are also able to induce GVB formation. Furthermore, the potential mechanisms of GVB formation and the downstream functional implications hereof are outlined in view of the current available data. In addition, we provide guidelines for the identification of GVBs in tissue and cell models that will help to facilitate and streamline research towards the elucidation of the role of these enigmatic and understudied structures in neurodegeneration.
Retinal ganglion cell vulnerability to pathogenic tau in Alzheimer's disease.
Davis M, Robinson E, Koronyo Y, Salobrar-Garcia E, Rentsendorj A, Gaire B Acta Neuropathol Commun. 2025; 13(1):31.
PMID: 39955563 PMC: 11829413. DOI: 10.1186/s40478-025-01935-y.
The necroptosis cell death pathway drives neurodegeneration in Alzheimer's disease.
Balusu S, De Strooper B Acta Neuropathol. 2024; 147(1):96.
PMID: 38852117 PMC: 11162975. DOI: 10.1007/s00401-024-02747-5.
Jorge-Oliva M, van Weering J, Scheper W Int J Mol Sci. 2023; 24(13).
PMID: 37446051 PMC: 10341458. DOI: 10.3390/ijms241310865.
Neuropathology of the Alzheimer's continuum: an update.
Jellinger K Free Neuropathol. 2023; 1.
PMID: 37283686 PMC: 10209886. DOI: 10.17879/freeneuropathology-2020-3050.
Keighron C, Avazzadeh S, Goljanek-Whysall K, McDonagh B, Howard L, Ritter T Biomedicines. 2023; 11(3).
PMID: 36979707 PMC: 10045119. DOI: 10.3390/biomedicines11030728.