Related Experiment Video
Updated: Aug 6, 2026

In Vivo Calcium Imaging in C. elegans Body Wall Muscles
Published on: October 20, 2019
When calcium crosstalk turns ferroptotic: the SERCA2-VDAC1 axis in AKI
1Division of Nephrology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
Abstract:
Organelle communication through endoplasmic reticulum-mitochondrial crosstalk is essential for maintaining cellular homeostasis and is tightly regulated by tethering proteins within mitochondria-associated endoplasmic reticulum membranes. In a recent study published in Kidney International, He et al. identified sarcoplasmic/endoplasmic reticulum Ca2+-ATPase 2 as a key regulator of endoplasmic reticulum-mitochondrial calcium homeostasis in proximal tubules and demonstrated that loss of sarcoplasmic/endoplasmic reticulum Ca2+-ATPase 2 drives voltage-dependent anion channel 1 oligomerization, mitochondrial DNA release, stimulator of interferon genes activation, and ferroptosis in acute kidney injury. This study establishes the sarcoplasmic/endoplasmic reticulum Ca2+-ATPase 2-voltage-dependent anion channel 1 axis as a mechanistic link between mitochondrial calcium dysregulation and ferroptotic tubular injury.
Related Concept Videos
Feedback Regulation of Calcium Concentration
Various transmembrane receptors, such as G protein-coupled receptors (GPCRs), elicit a response to extracellular signals by increasing cytosolic calcium. Activated GPCRs...
Calmodulin-dependent Signaling
The Ca2+-CaM complex does not have enzymatic activity by itself. Instead, the complex binds downstream target proteins, including membrane proteins or enzymes,...
Skeleton and Calcium Homeostasis
Catenins
Catenins in Cell Junctions
Catenins bind to cell adhesion molecules such as cadherins and link them to different cytoskeletal proteins depending on the type of cell junction. At the adherens...
Intracellular Signaling Affects Focal Adhesions
Some...
Notch Signaling Pathway
The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not until 1985...
