期刊
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
卷 117, 期 4, 页码 2194-2200出版社
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1916715117
关键词
BK channels; leucine-rich repeat containing proteins; LINGO1; accessory subunits; Parkinson's disease
资金
- Borders and Regions Airway Training Hub project by European Union (EU) under Interreg VA Programme
- MRC [MR/R010668/1] Funding Source: UKRI
LINGO1 is a transmembrane protein that is up-regulated in the cerebellum of patients with Parkinson's disease (PD) and Essential Tremor (ET). Patients with additional copies of the LINGO1 gene also present with tremor. Pharmacological or genetic ablation of large conductance Ca2+-activated K+ (BK) channels also result in tremor and motor disorders. We hypothesized that LINGO1 is a regulatory BK channel subunit. We show that 1) LINGO1 coimmunoprecipitated with BK channels in human brain, 2) coexpression of LINGO1 and BK channels resulted in rapidly inactivating BK currents, and 3) LINGO1 reduced the membrane surface expression of BK channels. These results suggest that LINGO1 is a regulator of BK channels, which causes a functional knockdown of these currents and may contribute to the tremor associated with increased LINGO1 levels.
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