Related Experiment Video
Updated: May 17, 2026

06:02
Development of an In Vitro Assay to Evaluate Contractile Function of Mesenchymal Cells that Underwent Epithelial-Mesenchymal Transition
Published on: June 10, 2016
Autophagy and mesenchymal cell fibrogenesis
Moira Hilscher1, Virginia Hernandez-Gea, Scott L Friedman
1Division of Liver Diseases, Mount Sinai School of Medicine, New York, NY, USA.
Biochimica Et Biophysica Acta
|November 13, 2012
Summary
Autophagy, a cellular process, plays a complex role in fibrosis. Understanding its regulation offers potential for new antifibrotic therapies targeting cellular energy and collagen.
Area of Science:
- Cellular Biology
- Pathophysiology
- Biochemistry
Background:
- Autophagy is a fundamental catabolic process crucial for cellular energy homeostasis, involving lysosomal degradation of intracellular components.
- Dysregulation of autophagy is linked to various human diseases, including cancer, infection, and fibrosis.
- Autophagy acts as a mediator of cell survival and proliferation, often induced by cellular stress like nutrient deprivation.
Purpose of the Study:
- To explore the multifaceted role of autophagy in fibrogenesis and mesenchymal cells.
- To investigate the contributions of autophagy to energy metabolism and collagen turnover in fibrogenic cells.
- To assess the potential of autophagy regulation as a therapeutic target for antifibrotic treatments.
Main Methods:
- Literature review of studies investigating autophagy in fibrotic conditions.
- Analysis of research on the mechanisms linking autophagy to cellular metabolism and extracellular matrix production.
- Examination of existing chemical modulators of autophagy for therapeutic potential.
Main Results:
- High autophagic activity is observed in fibrogenic cells across multiple tissues.
- The specific role of autophagy in fibrogenesis and mesenchymal cells is context-dependent and varies significantly.
- Autophagy influences energy metabolism and collagen turnover within fibrogenic cells.
Conclusions:
- Autophagy's intricate involvement in fibrosis necessitates further research for therapeutic development.
- Targeting autophagy regulation presents a promising avenue for developing novel antifibrotic therapies.
- Understanding the tissue-specific roles of autophagy is key to effective antifibrotic strategies.
Related Concept Videos
Cellular Injury V: Apoptosis and Autophagy
Cells respond to damage and stress through highly coordinated processes that decide whether they survive or undergo controlled self-destruction. Two major pathways involved in this regulation are apoptosis, a type of programmed cell death, and autophagy, a survival mechanism that helps cells adapt to adverse conditions.ApoptosisApoptosis removes aged or injured cells to maintain tissue balance. During this process, the cell shrinks, chromatin condenses and fragments, and membrane-bound...
Delivery Pathways to the Lysosome
Eukaryotic cells use different mechanisms to eliminate toxic waste obsolete and worn-out substances. Lysosomes play a pivotal role in this, and hence, these substances are carried to the lysosome from other parts of the cell and extracellular space through different pathways. The most elaborately studied pathways to the lysosome are the endocytic pathways.
Endocytosis
In endocytosis, the cell membrane takes up macromolecules and particles from the surrounding medium. Clathrin-mediated...
Endocytosis
In endocytosis, the cell membrane takes up macromolecules and particles from the surrounding medium. Clathrin-mediated...
Autophagy
Autophagy is a self-digesting process by which a cell protects itself from threats both within and outside the cell, ranging from abnormal proteins to invading bacteria. In this process, obsolete components of the cell and invading microbes are degraded by hydrolytic enzymes active in an acidic environment of the lysosomal lumen.
An autophagic pathway consists of a series of signaling events activated in response to diverse stress and physiological conditions such as food deprivation,...
An autophagic pathway consists of a series of signaling events activated in response to diverse stress and physiological conditions such as food deprivation,...
Introduction to Fibroblasts
Rudolph Virchow discovered spindle-shaped cells called fibroblasts in 1858. Inactive fibroblasts, called fibrocytes, become activated by various stimuli, such as growth factors and inflammatory cytokines. Activated fibroblasts play a crucial role in wound healing, inflammation, formation of new blood vessels, and cancer progression. Uncontrolled activation of fibroblasts results in fibrosis, the excess deposition of fibrous tissue, which can lead to scarring and affect normal organs. This...
Mesenchymal Stem Cells
Mesenchymal stem cells (MSCs) are adult stem cells that can differentiate into most connective tissue cell types, except for hematopoietic cells, depending upon the source of MSCs. For example, bone-marrow-derived MSCs (BM-MSCs) can differentiate into osteocytes, hepatocytes, and pancreatic and neuronal cells. MSCs can be isolated from various sources such as bone marrow, placenta, adipose tissue, teeth, and Wharton’s jelly, a gelatinous substance in the umbilical cord. The ease of their access...
TGF - β Signaling Pathway
The TGF-β signaling pathway regulates cell growth, differentiation, adhesion, motility, and development. TGF-β ligands that induce TGF-β signaling are synthesized in their latent form. Several proteases or cell surface receptors such as integrins act upon the latent form, releasing the active ligand. There are three types of mammalian TGF-βs: (TGF-β1, TGF-β2, and TGF-β3) that bind as homodimers or heterodimers to TGF-β receptors. The TGF-β receptors are of three kinds RI, RII, and RIII. The RI...

