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Autophagy01:27

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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.
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Exploring the Regulation of Lipid Droplet Catabolism through Lipophagy
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Aggrephagy at a glance.

Bernd Bauer1,2, Sascha Martens1, Luca Ferrari1

  • 1Max Perutz Labs, University of Vienna, Vienna BioCenter, Dr Bohr-Gasse 9/5, 1030 Vienna, Austria.

Journal of Cell Science
|May 31, 2023
PubMed
Summary
This summary is machine-generated.

The proteostasis network maintains cell function; its decline causes protein aggregate buildup linked to aging and disease. This study overviews aggrephagy, a pathway clearing these aggregates, and its therapeutic potential.

Keywords:
AutophagyNeurodegenerationProteostasis network

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Area of Science:

  • Cellular Biology
  • Molecular Mechanisms
  • Disease Pathogenesis

Background:

  • The proteostasis network, comprising chaperones, the ubiquitin-proteasome system, and autophagy, maintains cellular proteome functionality.
  • Decline in proteostasis leads to protein aggregate accumulation, a hallmark of aging and various diseases.
  • Protein aggregates disrupt cellular function and are implicated in neurodegenerative and other pathologies.

Purpose of the Study:

  • To provide an overview of aggrephagy, a selective autophagy pathway for removing protein aggregates.
  • To elucidate the regulatory mechanisms of aggrephagy, including post-translational modifications and auxiliary proteins.
  • To discuss the role of aggrephagy in neuronal physiology and its dysregulation in disease.

Main Methods:

  • Review of molecular mechanisms governing protein aggregate clearance via selective autophagy.
  • Analysis of regulatory pathways controlling aggrephagy.
  • Examination of aggrephagy's involvement in specific diseases, particularly in neurons.

Main Results:

  • Aggrephagy is a key pathway for the selective removal of toxic protein aggregates.
  • Post-translational modifications and auxiliary proteins play crucial roles in regulating aggrephagy.
  • Disruption of aggrephagy contributes to protein aggregation diseases, especially in neuronal cells.

Conclusions:

  • Understanding aggrephagy mechanisms is vital for comprehending aging and disease.
  • Targeting and reprogramming aggrephagy offers a promising therapeutic strategy for protein aggregation disorders.
  • Further research into aggrephagy pathways can lead to novel treatments for debilitating diseases.