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Updated: Dec 2, 2025
Cytosolic Calcium Measurements in Renal Epithelial Cells by Flow Cytometry
Published on: October 28, 2014
Intracellular Calcium Homeostasis and Kidney Disease
Na Song1, Ming Yang2, Hao Zhang1
1Department of Nephrology, The Third Xiangya Hospital of Central South University, Changsha 410013, Hunan Province, China.
Abstract:
Kidney disease is a serious health problem that burdens our healthcare system. It is crucial to find the accurate pathogenesis of various types of kidney disease to provide guidance for precise therapies for patients suffering from these diseases. However, the exact molecular mechanisms underlying these diseases have not been fully understood. Disturbance of calcium homeostasis in renal cells plays a fundamental role in the development of various types of kidney disease, such as primary glomerular disease, diabetic nephropathy, acute kidney injury and polycystic kidney disease, through promoting cell proliferation, stimulating extracellular matrix accumulation, aggravating podocyte injury, disrupting cellular energetics as well as dysregulating cell survival and death dynamics. As a result, preventing the disturbance of calcium homeostasis in specific renal cells (such as tubular cells, podocytes and mesangial cells) is becoming one of the most promising therapeutic strategies in the treatment of kidney disease. The endoplasmic reticulum and mitochondria are two vital organelles in this process. Calcium ions cycle between the endoplasmic reticulum and mitochondria at the conjugation of these two organelles known as the mitochondria-associated endoplasmic reticulum membrane, maintaining calcium homeostasis. The pharmacologic modulation of cellular calcium homeostasis can be viewed as a novel therapeutic method for renal diseases. Here, we will introduce calcium homeostasis under physiological conditions and the disturbance of calcium homeostasis in kidney diseases. We will focus on the calcium homeostasis regulation in renal cells (including tubular cells, podocytes and mesangial cells), especially in the mitochondria- associated endoplasmic reticulum membranes of these renal cells.
Insights
Kidney diseases involve disrupted calcium homeostasis in renal cells. Targeting this balance, particularly at the mitochondria-associated endoplasmic reticulum membrane, offers promising therapeutic strategies for kidney disease treatment.
Area of Science:
- Nephrology
- Cell Biology
- Biochemistry
Background:
- Kidney disease presents a significant healthcare burden, necessitating a deeper understanding of its molecular pathogenesis for effective therapies.
- Disturbances in calcium homeostasis within renal cells are implicated in the development of diverse kidney diseases, including diabetic nephropathy and acute kidney injury.
- The endoplasmic reticulum and mitochondria, interconnected at the mitochondria-associated endoplasmic reticulum membrane, are critical regulators of cellular calcium balance.
Purpose of the Study:
- To elucidate the role of calcium homeostasis in the pathogenesis of various kidney diseases.
- To highlight the importance of specific renal cell types (tubular cells, podocytes, mesangial cells) in maintaining calcium balance.
- To explore the therapeutic potential of modulating cellular calcium homeostasis in kidney disease treatment.
Main Methods:
- Review of physiological conditions and disturbances of calcium homeostasis in kidney diseases.
- Focus on calcium regulation mechanisms within renal tubular cells, podocytes, and mesangial cells.
- Examination of calcium ion cycling at the mitochondria-associated endoplasmic reticulum membrane.
Main Results:
- Impaired calcium homeostasis contributes to cellular dysfunction in kidney disease, promoting proliferation, extracellular matrix accumulation, and altered cell survival.
- The mitochondria-associated endoplasmic reticulum membrane is a key site for calcium exchange and homeostasis regulation in renal cells.
- Pharmacological interventions targeting cellular calcium balance show potential as novel therapeutic approaches.
Conclusions:
- Restoring calcium homeostasis in renal cells is a critical therapeutic strategy for kidney disease.
- Understanding calcium regulation at the mitochondria-associated endoplasmic reticulum membrane offers insights into disease mechanisms and treatment targets.
- Pharmacologic modulation of calcium homeostasis represents a promising avenue for managing renal diseases.
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