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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Coupling of Rigor Mortis and Intestinal Necrosis during C. elegans Organismal Death
AU - Galimov, Evgeniy R
AU - Pryor, Rosina E
AU - Poole, Sarah E
AU - Benedetto, Alexandre
AU - Pincus, Zachary
AU - Gems, David
N1 - Copyright © 2018 The Author(s). Published by Elsevier Inc. All rights reserved.
PY - 2018/3/6
Y1 - 2018/3/6
N2 - Organismal death is a process of systemic collapse whose mechanisms are less well understood than those of cell death. We previously reported that death in C. elegans is accompanied by a calcium-propagated wave of intestinal necrosis, marked by a wave of blue autofluorescence (death fluorescence). Here, we describe another feature of organismal death, a wave of body wall muscle contraction, or death contraction (DC). This phenomenon is accompanied by a wave of intramuscular Ca2+release and, subsequently, of intestinal necrosis. Correlation of directions of the DC and intestinal necrosis waves implies coupling of these death processes. Long-lived insulin/IGF-1-signaling mutants show reduced DC and delayed intestinal necrosis, suggesting possible resistance to organismal death. DC resembles mammalian rigor mortis, a postmortem necrosis-related process in which Ca2+influx promotes muscle hyper-contraction. In contrast to mammals, DC is an early rather than a late event in C. elegans organismal death. VIDEO ABSTRACT.
AB - Organismal death is a process of systemic collapse whose mechanisms are less well understood than those of cell death. We previously reported that death in C. elegans is accompanied by a calcium-propagated wave of intestinal necrosis, marked by a wave of blue autofluorescence (death fluorescence). Here, we describe another feature of organismal death, a wave of body wall muscle contraction, or death contraction (DC). This phenomenon is accompanied by a wave of intramuscular Ca2+release and, subsequently, of intestinal necrosis. Correlation of directions of the DC and intestinal necrosis waves implies coupling of these death processes. Long-lived insulin/IGF-1-signaling mutants show reduced DC and delayed intestinal necrosis, suggesting possible resistance to organismal death. DC resembles mammalian rigor mortis, a postmortem necrosis-related process in which Ca2+influx promotes muscle hyper-contraction. In contrast to mammals, DC is an early rather than a late event in C. elegans organismal death. VIDEO ABSTRACT.
KW - aging
KW - ATP
KW - calcium
KW - C. elegans
KW - muscle
KW - necrosis
KW - organismal death
KW - pathology
KW - rigor mortis
U2 - 10.1016/j.celrep.2018.02.050
DO - 10.1016/j.celrep.2018.02.050
M3 - Journal article
C2 - 29514100
VL - 22
SP - 2730
EP - 2741
JO - Cell Reports
JF - Cell Reports
SN - 2211-1247
IS - 10
ER -