%0 Journal Article
%T Hyperosmotic-stress-induced liquid-liquid phase separation of ALS-related proteins in the nucleus.
%A Gao C
%A Gu J
%A Zhang H
%A Jiang K
%A Tang L
%A Liu R
%A Zhang L
%A Zhang P
%A Liu C
%A Dai B
%A Song J
%J Cell Rep
%V 40
%N 3
%D 07 2022 19
%M 35858576
暂无%R 10.1016/j.celrep.2022.111086
%X Hyperosmotic stress as physiologic dysfunction can reduce the cell volume and then redistribute both protein concentration and ionic strength, but its effect on liquid-liquid phase separation (LLPS) is not well understood. Here, we map the hyperosmotic-stress-induced nuclear LLPS of amyotrophic lateral sclerosis (ALS)-related proteins (fused in sarcoma [FUS], TAR DNA-binding protein 43 [TDP-43]). The dynamic and reversibility of FUS granules are continuable with the increase of hypertonic stimulation time, but those of TDP-43 granules decrease significantly. Strikingly, FUS granules, but not TDP-43 granules, contain essential chaperone Hsp40, which can protect amyloid protein from solid aggregation. Moreover, FUS nuclear granules can co-localize with paraspeckles, but not promyelocytic leukemia (PML) bodies or nuclear speckles, while TDP-43 nuclear granules cannot co-localize with the above nuclear bodies. Together, these results may broaden our understanding of the LLPS of ALS-related proteins in response to cellular stress.