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Related Concept Videos

Autophagy01:27

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,...
Delivery Pathways to the Lysosome01:36

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...
Autophagic Cell Death01:18

Autophagic Cell Death

Christian de Duve discovered “autophagy,” a process in which cellular components are engulfed by membrane-bound organelles called autophagosomes. The autophagosomes then fuse with lysosomes to digest the enclosed contents. Autophagy is generally activated in cells to prevent cell death. However, cell death is triggered when the damage is beyond repair.
Autophagy and Apoptosis
Autophagy can activate apoptosis. In normal conditions, the autophagy activating protein Beclin-1 and pro-apoptotic...
Cellular Injury V: Apoptosis and Autophagy01:22

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...
Lysosomal Hydrolases01:22

Lysosomal Hydrolases

Lysosomes are the site for the degradation of macromolecules and biological polymers released during membrane trafficking events such as secretory, endocytic, autophagic, and phagocytic pathways. The membrane-enclosed area of the lysosome, called the lumen, contains hydrolytic enzymes active in an acidic environment. These acid hydrolases are functional at a pH between 4.5 and 5 and are involved in cellular processes such as cell signaling, energy metabolism, restoration of the plasma membrane,...
Liver Histology01:27

Liver Histology

The microscopic anatomy of the liver is a complex and intricate system that comprises numerous structural units known as liver lobules, each of which is comparable in size to a sesame seed. These hexagonal structures consist of plates of liver cells or hepatocytes, which are characterized by their versatility and abundance of cellular apparatus like rough and smooth ER, Golgi apparatus, peroxisomes, and mitochondria.
Hepatocytes perform a variety of essential functions. They secrete...

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Updated: Jul 12, 2026

Exploring the Regulation of Lipid Droplet Catabolism through Lipophagy
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Exploring the Regulation of Lipid Droplet Catabolism through Lipophagy

Published on: January 31, 2025

Autophagy in the liver.

Elijah Burks1, Jenna Copes1, Kelly Nguyen1

  • 1Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, New Orleans, LA, USA.

Autophagy Reports
|July 10, 2026
PubMed
Summary

Autophagy is crucial for liver health, regulating metabolism and detoxification. Dysfunctional autophagy contributes to liver diseases, but targeting this pathway offers new therapeutic opportunities.

Keywords:
Autophagyliver diseaseliver homeostasismacroautophagymetabolism

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Area of Science:

  • Hepatology and Cellular Biology
  • Molecular Mechanisms of Disease

Background:

  • The liver is vital for homeostasis, with autophagy regulating nutrient metabolism, detoxification, and immune responses.
  • Autophagy, a cellular degradation process, is essential for hepatocyte adaptation to nutrient changes and stress.
  • Hepatic autophagy is intricately controlled by nutrient sensing, hormonal signals, and various transcriptional and epigenetic regulators.

Purpose of the Study:

  • To review the regulatory networks governing hepatic autophagy.
  • To summarize recent advances in understanding hepatic autophagy regulation.
  • To highlight the role of autophagy in liver homeostasis and disease, and explore therapeutic potential.

Main Methods:

  • Literature review of existing findings on hepatic autophagy.
  • Focus on recent advances in regulatory mechanisms.
  • Analysis of autophagy's role in physiological and pathological liver conditions.

Main Results:

  • Hepatic autophagy is regulated by nutrient/energy sensing (AMPK, mTOR), hormones (insulin, glucagon), and transcription factors (TFEB, FOXO, PPAR, FXR, NRF2).
  • Epigenomic, post-transcriptional (miRNAs, RBPs), and phase separation mechanisms further control autophagy.
  • Autophagy maintains hepatocyte integrity via selective degradation (mitophagy, lipophagy, etc.) and its dysfunction is implicated in MASLD, ALD, fibrosis, and HCC.

Conclusions:

  • Autophagy is a central pathway in liver function and disease pathogenesis.
  • Understanding hepatic autophagy regulation provides a basis for novel therapeutic strategies.
  • Targeting autophagy holds promise for treating diverse liver diseases.