科學家繪製出小鼠全腦突觸的終身變化圖譜
作者:
小柯機器人發布時間:2020/6/14 23:11:04
英國愛丁堡大學Seth G. N. Grant課題組繪製出小鼠全腦突觸的終身變化圖譜。這一研究成果於2020年6月11日在線發表在國際學術期刊《科學》上。
研究人員以單突觸解析度分析了從出生到老年整個小鼠大腦中的50億個興奮性突觸的分子和形態學多樣性。連續的變化會改變整個生命周期中所有大腦區域的突觸組成。
突觸多樣性的擴大會導致大腦區域的分化,直到成年早期,並且組成的變化會導致老年時的去分化。大腦的時空突觸結構隨著年齡變化可能會影響智力、記憶力以及行為障礙易感性。
據悉,突觸將神經元連接在一起,形成大腦的迴路,其分子組成控制先天和學習的行為。
附:英文原文
Title: A brain-wide atlas of synapses across the mouse lifespan
Author: Mélissa Cizeron, Zhen Qiu, Babis Koniaris, Ragini Gokhale, Noboru H. Komiyama, Erik Fransén, Seth G. N. Grant
Issue&Volume: 2020/06/11
Abstract: Abstract Synapses connect neurons together to form the circuits of the brain and their molecular composition controls innate and learned behavior. We have analyzed the molecular and morphological diversity of five billion excitatory synapses at single-synapse resolution across the mouse brain from birth to old age. A continuum of changes alters synapse composition in all brain regions across the lifespan. Expansion in synapse diversity produces differentiation of brain regions until early adulthood and compositional changes cause dedifferentiation in old age. The spatiotemporal synaptome architecture of the brain potentially accounts for lifespan transitions in intellectual ability, memory, and susceptibility to behavioral disorders.
DOI: 10.1126/science.aba3163
Source: https://science.sciencemag.org/content/early/2020/06/10/science.aba3163
Science:《科學》,創刊於1880年。隸屬於美國科學促進會,最新IF:41.037