New work published in Progress in Neurobiology
Our manuscript, Pathogenic tau accelerates aging-associated activation of transposable elements in the mouse central nervous system, has been published in Progress in Neurobiology and is now available online!
We have previously reported causal links between pathogenic forms of tau, a protein that accumulates in Alzheimer’s disease and related “tauopathies,” and transposable element-induced neurotoxicity in fly and human tauopathy. In this new work, we find that age- and tau-induced transposable element activation also occurs in the mouse brain. Among transposable elements that are activated at the RNA level in the context of brain aging and tauopathy, we find that the endogenous retrovirus (ERV) class of retrotransposons is particularly enriched. We show that protein encoded by Intracisternal A-particle, a highly active mouse ERV, is elevated in brains of tau transgenic mice. Using two complementary approaches, we find that brains of tau transgenic mice contain increased DNA copy number of transposable elements, raising the possibility that these elements actively retrotranspose in the context of tauopathy. Taken together, our study lays the groundwork for future mechanistic studies focused on transposable element regulation in the aging mouse brain and in mouse models of tauopathy and provides support for ongoing therapeutic efforts targeting transposable element activation in patients with Alzheimer’s disease.