蛋白质稳态
生物
蛋白酶体
表观遗传学
未折叠蛋白反应
泛素
自噬
细胞生物学
蛋白质聚集
蛋白质降解
遗传学
基因
细胞凋亡
作者
Amrita Kulkarni,Preeti Kumari,Kamatham Pushpa Tryphena,Saurabh Srivastava,Shashi Bala Singh,Dharmendra Kumar Khatri
标识
DOI:10.1016/j.arr.2022.101816
摘要
The protein dyshomeostasis is identified as the hallmark of many age-related neurodegenerative disorders including Parkinson’s disease (PD). The diseased brain shows the deposition of Lewy bodies composed of α-synuclein protein aggregates. Functional proteostasis is characterized by the well-coordinated signaling network constituting unfolded protein response (UPR), the ubiquitin-proteasome system (UPS), and the autophagy-lysosome pathway (ALP). These networks ensure proper synthesis, folding, confirmation, and degradation of protein i.e., α-synuclein protein in PD. The proper functioning the of intricately woven proteostasis network is quite resilient to sustain under the influence of stressors. The synuclein protein turnover is hugely influenced by the autosomal dominant, recessive, and X-linked mutational changes of a gene involved in UPR, UPS, and ALP. The methylation, acetylation-related epigenetic modifications of DNA and histone proteins along with microRNA-mediated transcriptional changes also lead to extensive proteostasis dysregulation. The result of defective proteostasis is the deposition of many proteins which start appearing in the biofluids and can be identified as potential biomarkers for early diagnosis of PD. The therapeutic intervention targeted at different strata of proteostasis machinery holds great possibilities for delaying the age-related accumulation of pathological hallmarks.
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