期刊
JOURNAL OF EXPERIMENTAL MEDICINE
卷 218, 期 1, 页码 -出版社
ROCKEFELLER UNIV PRESS
DOI: 10.1084/jem.20192193
关键词
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资金
- National Institutes of Health/National Institute on Aging [P30 AG010124, P01 AG17586, U19 AG062418]
- Jeff and Anne Keefer Fund
- Neurodegenerative Disease Research Fund
The neuropathological hallmarks of Parkinson's disease (PD) and Alzheimer's disease (AD), alpha-synuclein (alpha-syn) and tau aggregates, may interact in patients with these diseases, with alpha-syn playing an important modulatory role in the burden and spreading of tau pathology.
alpha-Synuclein (alpha-syn) and tau aggregates are the neuropathological hallmarks of Parkinson's disease (PD) and Alzheimer's disease (AD), respectively, although both pathologies co-occur in patients with these diseases, suggesting possible crosstalk between them. To elucidate the interactions of pathological alpha-syn and tau, we sought to model these interactions. We show that increased accumulation of tau aggregates occur following simultaneous introduction of alpha-syn mouse preformed fibrils (mpffs) and AD lysate-derived tau seeds (AD-tau) both in vitro and in vivo. Interestingly, the absence of endogenous mouse alpha-syn in mice reduces the accumulation and spreading of tau, while the absence of tau did not affect the seeding or spreading capacity of alpha-syn. These in vivo results are consistent with our in vitro data wherein the presence of tau has no synergistic effects on alpha-syn. Our results point to the important role of alpha-syn as a modulator of tau pathology burden and spreading in the brains of AD, PDD, and DLB patients.
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