Entry of mitochondrial calcium is believed to play an essential role in regulating bioenergetics and initiating cell death pathways. We have recently described a mouse model lacking MCU expression. Surprisingly, these mice are viable and the cells and tissues from these animals do not exhibit any marked protection from cell death. Here, we discuss our findings as well as potential explanations for some of the more unexpected results.
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http://dx.doi.org/10.1016/j.bbrc.2014.04.144 | DOI Listing |
Plants (Basel)
November 2024
Crop Stress Molecular Biology Laboratory, Heilongjiang Bayi Agricultural University, Daqing 163319, China.
Proc Natl Acad Sci U S A
August 2024
Department of Pathology and Genomic Medicine, MitoCare Center, Thomas Jefferson University, Philadelphia, PA 19107.
Activating Ca-sensitive enzymes of oxidative metabolism while preventing calcium overload that leads to mitochondrial and cellular injury requires dynamic control of mitochondrial Ca uptake. This is ensured by the mitochondrial calcium uptake (MICU)1/2 proteins that gate the pore of the mitochondrial calcium uniporter (mtCU). MICU1 is relatively sparse in the heart, and recent studies claimed the mammalian heart lacks MICU1 gating of mtCU.
View Article and Find Full Text PDFZool Res
September 2024
College of Life Sciences, Capital Normal University, Beijing 100048, China. E-mail:
Most described Mesozoic ants belong to stem groups that existed only during the Cretaceous period. Previously, the earliest known crown ants were dated to the Turonian (Late Cretaceous, ca. 94-90 million years ago (Ma)) deposits found in the USA, Kazakhstan, and Botswana.
View Article and Find Full Text PDFFree Radic Biol Med
August 2024
Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, 430060, China. Electronic address:
Intestinal ischemia‒reperfusion (IIR) injury is a common complication of surgery, but clear molecular insights and valuable therapeutic targets are lacking. Mitochondrial calcium overload is an early sign of various diseases and is considered a vital factor in ischemia‒reperfusion injury. The mitochondrial calcium uniporter (MCU), which is located on the inner mitochondrial membrane, is the primary mediator of calcium ion entry into the mitochondria.
View Article and Find Full Text PDFPlants (Basel)
April 2024
Marine Biological Association, Plymouth PL1 2PB, UK.
Diatoms are important primary producers in marine and freshwater environments, but little is known about the signalling mechanisms they use to detect changes in their environment. All eukaryotic organisms use Ca signalling to perceive and respond to environmental stimuli, employing a range of Ca-permeable ion channels to facilitate the movement of Ca across cellular membranes. We investigated the distribution of different families of Ca channels in diatom genomes, with comparison to other members of the stramenopile lineage.
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