Medicine and Health Sciences Commons^™

Aberrant Azin2 And Polyamine Metabolism Precipitates Tau Neuropathology, Leslie A. Sandusky-Beltran, Andrii Kovalenko, Devon S. Placides, Kevin Ratnasamy, Chao Ma, Jerry B. Hunt, Huimin Liang, John Ivan T. Calahatian, Camilla Michalski, Margaret Fahnestock, Laura J. Blair, April L. Darling, Jeremy D. Baker, Sarah N. Fontaine, Chad A. Dickey, Joshua J. Gamsby, Kevin R. Nash, Erin L. Abner, Maj-Linda B. Selenica, Daniel C. Lee

Sanders-Brown Center on Aging Faculty Publications

Tauopathies display a spectrum of phenotypes from cognitive to affective behavioral impairments; however, mechanisms promoting tau pathology and how tau elicits behavioral impairment remain unclear. We report a unique interaction between polyamine metabolism, behavioral impairment, and tau fate. Polyamines are ubiquitous aliphatic molecules that support neuronal function, axonal integrity, and cognitive processing. Transient increases in polyamine metabolism hallmark the cell’s response to various insults, known as the polyamine stress response (PSR). Dysregulation of gene transcripts associated with polyamine metabolism in Alzheimer’s disease (AD) brains were observed, and we found that ornithine decarboxylase antizyme inhibitor 2 (AZIN2) increased to …