Angiogenin and tRNA fragments in Parkinson’s disease and neurodegeneration  

作　　者：Jochen H M Prehn Elisabeth Jirstrom 

机构地区：[1]Department of Physiology and Medical Physics and FutureNeuro SFI Research Centre,Royal College of Surgeons in Ireland,123 St Stephen’s Green,Dublin 2,Ireland

出　　处：《Acta Pharmacologica Sinica》2020年第4期442-446,共5页中国药理学报（英文版）

基　　金：supported in part by a research grant from Science Foundation Ireland(SFI)under Grant Number 16/RC/3948 and cofunded under the European Regional Development Fund and by FutureNeuro industry partners and by the Joint Programme in Neurodegeneration Research(JPND)project RNA-NEURO supported by SFI(17/JPND/3455).

摘　　要：In this review,we summarise the evidence for a role of the ribonuclease angiogenin in the pathophysiology of neurodegenerative disorders,with a specific focus on Parkinson’s disease(PD).Angiogenin is a stress-induced,secreted ribonuclease with both nuclear and cytosolic activities.Loss-of-function mutations in the angiogenin gene(ANG)have been initially discovered in familial cases of amyotrophic lateral sclerosis(ALS),however,variants in ANG have subsequently been identified in PD and Alzheimer’s disease.Delivery of angiogenin protein reduces neurodegeneration and delays disease progression in in vitro and in vivo models of ALS and in vitro models of PD.In the nucleus,angiogenin promotes ribosomal RNA transcription.Under stress conditions,angiogenin also translocates to the cytosol where it cleaves non-coding RNA into RNA fragments,in particular transfer RNAs(tRNAs).Stress-induced tRNA fragments have been proposed to have multiple cellular functions,including inhibition of ribosome biogenesis,inhibition of protein translation and inhibition of apoptosis.We will discuss recent evidence of tRNA fragment accumulation in PD,as well as their potential neuroprotective activities.

关 键 词：ANGIOGENIN RIBONUCLEASE RIBOSOMAL RNA(rRNA) transfer RNA(tRNA) tRNA-derived fragments(tRFs) neuroprotection 

分 类 号：R742.5[医药卫生—神经病学与精神病学]