Epithelial-mesenchymal crosstalk alteration in kidney fibrosis

Marco Prunotto1, David C Budd, Giulio Gabbiani

  • 1CV and Metabolic DTA Department, F. Hoffmann-La Roche Ltd, Basel, Switzerland. marco.prunotto@gmail.com

Insights

Chronic kidney disease (CKD) is rising globally. Altered cellular crosstalk in the tubulo-interstitial microenvironment may drive renal fibrosis and disease progression, despite improved therapies targeting the renin-angiotensin system (RAAS).

Area of Science:

  • Nephrology
  • Pathology
  • Cell Biology

Background:

  • Chronic kidney diseases (CKD) incidence is increasing globally, posing a significant public health challenge.
  • Current therapies targeting the renin-angiotensin system (RAAS) have limitations in halting progression to end-stage renal disease (ESRD).
  • Existing research suggests renal fibrosis progression is linked to the tubulo-interstitial microenvironment.

Purpose of the Study:

  • To review biological evidence supporting the role of altered cellular crosstalk in CKD progression.
  • To investigate the contribution of the tubulo-interstitial microenvironment to renal disease.
  • To explore the epithelial-mesenchymal crosstalk in the context of renal fibrosis.

Main Methods:

  • Literature review of in vitro and in vivo studies.
  • Analysis of historical and recent findings on renal fibrosis mechanisms.
  • Examination of cellular interactions within the tubulo-interstitial microenvironment.

Main Results:

  • Evidence suggests that an altered tubulo-interstitial microenvironment contributes to CKD progression.
  • Epithelial-mesenchymal crosstalk is identified as a key factor in the development of renal fibrosis.
  • Cellular interactions within the injured kidney play a critical role in disease advancement.

Conclusions:

  • Altered cellular crosstalk in the tubulo-interstitial microenvironment is a significant driver of renal fibrosis and CKD progression.
  • Further research into these cellular mechanisms could reveal new therapeutic targets for CKD.
  • Understanding epithelial-mesenchymal interactions is crucial for combating the epidemic of kidney disease.

Related Concept Videos

Cirrhosis II: Pathophysiology01:24

Cirrhosis II: Pathophysiology

Cirrhosis is a progressive chronic liver injury caused by prolonged inflammation, excessive fibrotic remodeling, and impaired regeneration. Over time, repeated hepatic insults disrupt the liver’s architecture and function, leading to reduced blood flow, impaired bile drainage, and diminished metabolic capacity.Pathophysiology of cirrhosisCirrhosis arises from three main responses to chronic liver damage: inflammation, immune activation, and hepatocyte death. These processes lead to structural...
The Tumor Microenvironment02:17

The Tumor Microenvironment

Every normal cell or tissue is embedded in a complex local environment called stroma, consisting of different cell types, a basal membrane, and blood vessels. As normal cells mutate and develop into cancer cells, their local environment also changes to allow cancer progression. The tumor microenvironment (TME) consists of a complex cellular matrix of stromal cells and the developing tumor. The cross-talk between cancer cells and surrounding stromal cells is critical to disrupt normal tissue...
Extracellular Matrix01:26

Extracellular Matrix

Unlike epithelial tissue, which is composed of cells closely packed with little or no extracellular space in between, connective tissue cells are dispersed in a matrix. This extracellular matrix (ECM) is composed of fibrous proteins like collagen, elastin, and fibronectin in a ground substance consisting of interstitial fluid, cell adhesion proteins, and proteoglycans. The proteoglycans form a gel-like material in the spaces between cells and provide hydration, buffering, binding, and force...
The Extracellular Matrix01:42

The Extracellular Matrix

Overview
The Extracellular Matrix01:29

The Extracellular Matrix

Overview
In order to maintain tissue organization, many animal cells are surrounded by structural molecules that make up the extracellular matrix (ECM). Together, the molecules in the ECM maintain the structural integrity of tissue as well as the remarkable specific properties of certain tissues.
Composition of the Extracellular Matrix
The extracellular matrix (ECM) is commonly composed of ground substance, a gel-like fluid, fibrous components, and many structurally and functionally diverse...