A growth-factor-activated lysosomal K+ channel regulates Parkinson’s pathology
| العنوان: | A growth-factor-activated lysosomal K+ channel regulates Parkinson’s pathology |
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| المؤلفون: | Dejian Ren, Lu Yang, Chunlei Cang, Jing Yang, Thomas F. Tropea, Yuling Liang, Huanhuan Wang, Joey Lohmann, Boxun Lu, Zhenjiang Liu, Kelvin C. Luk, Jinhong Wie, Alice Chen-Plotkin, Haikun Song, Kimberly Aranda |
| المصدر: | Nature |
| بيانات النشر: | Springer Science and Business Media LLC, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | 0301 basic medicine, Multidisciplinary, Growth factor, medicine.medical_treatment, HEK 293 cells, Dopaminergic, Plasma protein binding, Biology, Article, Cell biology, Minor allele frequency, 03 medical and health sciences, 030104 developmental biology, 0302 clinical medicine, Intracellular organelle, medicine, Extracellular, Protein kinase B, 030217 neurology & neurosurgery |
| الوصف: | Lysosomes have fundamental physiological roles and have previously been implicated in Parkinson’s disease1–5. However, how extracellular growth factors communicate with intracellular organelles to control lysosomal function is not well understood. Here we report a lysosomal K+ channel complex that is activated by growth factors and gated by protein kinase B (AKT) that we term lysoKGF. LysoKGF consists of a pore-forming protein TMEM175 and AKT: TMEM175 is opened by conformational changes in, but not the catalytic activity of, AKT. The minor allele at rs34311866, a common variant in TMEM175, is associated with an increased risk of developing Parkinson’s disease and reduces channel currents. Reduction in lysoKGF function predisposes neurons to stress-induced damage and accelerates the accumulation of pathological α-synuclein. By contrast, the minor allele at rs3488217—another common variant of TMEM175, which is associated with a decreased risk of developing Parkinson’s disease—produces a gain-of-function in lysoKGF during cell starvation, and enables neuronal resistance to damage. Deficiency in TMEM175 leads to a loss of dopaminergic neurons and impairment in motor function in mice, and a TMEM175 loss-of-function variant is nominally associated with accelerated rates of cognitive and motor decline in humans with Parkinson’s disease. Together, our studies uncover a pathway by which extracellular growth factors regulate intracellular organelle function, and establish a targetable mechanism by which common variants of TMEM175 confer risk for Parkinson’s disease. The identification of a lysosomal K+ channel complex—comprising AKT and the pore-forming TMEM175—provides insights into the mechanisms through which variants of the pore-forming protein affect the development of Parkinson’s disease. |
| تدمد: | 1476-4687 0028-0836 3431-1866 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::85afed56268ff6bc90d7add0cac657d8 https://doi.org/10.1038/s41586-021-03185-z |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....85afed56268ff6bc90d7add0cac657d8 |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 14764687 00280836 34311866 |
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