Toggle Main Menu Toggle Search

Open Access padlockePrints

Doxycycline Interferes With Tau Aggregation and Reduces Its Neuronal Toxicity

Lookup NU author(s): Professor Tiago OuteiroORCiD



This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).


© Copyright © 2021 Medina, González-Lizárraga, Dominguez-Meijide, Ploper, Parrales, Sequeira, Cima-Omori, Zweckstetter, Del Bel, Michel, Outeiro, Raisman-Vozari, Chehín and Socias.Tauopathies are neurodegenerative disorders with increasing incidence and still without cure. The extensive time required for development and approval of novel therapeutics highlights the need for testing and repurposing known safe molecules. Since doxycycline impacts α-synuclein aggregation and toxicity, herein we tested its effect on tau. We found that doxycycline reduces amyloid aggregation of the 2N4R and K18 isoforms of tau protein in a dose-dependent manner. Furthermore, in a cell free system doxycycline also prevents tau seeding and in cell culture reduces toxicity of tau aggregates. Overall, our results expand the spectrum of action of doxycycline against aggregation-prone proteins, opening novel perspectives for its repurposing as a disease-modifying drug for tauopathies.

Publication metadata

Author(s): Medina L, Gonzalez-Lizarraga F, Dominguez-Meijide A, Ploper D, Parrales V, Sequeira S, Cima-Omori M-S, Zweckstetter M, Del Bel E, Michel PP, Outeiro TF, Raisman-Vozari R, Chehin R, Socias SB

Publication type: Article

Publication status: Published

Journal: Frontiers in Aging Neuroscience

Year: 2021

Volume: 13

Online publication date: 22/03/2021

Acceptance date: 22/02/2021

Date deposited: 19/04/2021

ISSN (electronic): 1663-4365

Publisher: Frontiers Media S.A.


DOI: 10.3389/fnagi.2021.635760


Altmetrics provided by Altmetric


Funder referenceFunder name
Investissements d'Avenir (ANR-10-IAIHU-06)
PIP-CONICET 0183, PICT3379, PICT2018-02989 PIP-CONICET 11220130100619CO, PICT-MINCyT 2012–2882, PIUNT-UNT D542/1.
Translational Research Infrastructure for Biotherapies in Neurosciences (ANR-11-INBS-0011-NeurATRIS)
TF is supported by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany's Excellence Strategy - EXC 2067/1- 390729940.