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Related Concept Videos

Overview of Cell Death01:30

Overview of Cell Death

Cell death is an essential process where the body gets rid of old or damaged cells. Cell proliferation and death need to be balanced, as an imbalance between the two may lead to cancer or autoimmune diseases.
Cell death was observed in the early 19th century, but there was no experimental evidence to prove it. In 1842, Carl Vogt first discovered cell death in a metamorphic toad; however, it was not termed ‘cell death.’ Scientists discovered different cell death pathways only in the 20th century...
Cellular Injury IlI: Cellular Death01:11

Cellular Injury IlI: Cellular Death

Cell death is the irreversible loss of cellular structure and function, representing the final stage of severe injury. It plays a key role in both normal physiology and disease.Types of Cell DeathThe two main types are necrosis and apoptosis, though others like necroptosis and pyroptosis also exist.Necrosis:Necrosis is an unregulated form of cell death caused by severe injury such as trauma, toxins, or ischemia. It is characterized by cell swelling, membrane loss, rupture, and leakage of...
The Extrinsic Apoptotic Pathway01:17

The Extrinsic Apoptotic Pathway

The extrinsic apoptotic pathway is initiated when extracellular death-inducing signals, such as specific cytokines, activate the death receptors expressed on the cell surface. The immune cells involved in this pathway are natural killer cells (NK cells) and cytotoxic T-lymphocytes. NK cells are critical in innate immune response, while cytotoxic T-lymphocytes are associated with adaptive immune response. These cells recognize specific receptors expressed on the altered cells and activate...
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...
Necrosis01:16

Necrosis

Necrosis is considered as an “accidental” or unexpected form of cell death that ends in cell lysis. The first noticeable mention of “necrosis” was in 1859 when Rudolf Virchow used this term to describe advanced tissue breakdown in his compilation titled “Cell Pathology”.
Morphological Manifestations of Necrosis
Necrotic cells show different types of morphological appearance depending on the type of tissue and infection. In coagulative necrosis, cells become anucleated and die, but their...
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...

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LPS and ATP-induced Death of PMA-differentiated THP-1 Macrophages and its Validation
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Who gets cut during cell death?

Francis Impens1, Joël Vandekerckhove, Kris Gevaert

  • 1Department of Medical Protein Research, VIB, B-9000 Ghent, Belgium.

Current Opinion in Cell Biology
|September 18, 2010
PubMed
Summary
This summary is machine-generated.

Positional proteomics reveals protease roles in cell death. This review highlights key findings at the intersection of proteomics, protease biology, and cell death research.

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Proteomics

Background:

  • Cell death is a critical biological process regulated by proteases.
  • Emerging technologies like positional proteomics offer new ways to study protease activity.
  • Understanding protease involvement in cell death is crucial for disease research.

Purpose of the Study:

  • To review recent advancements in positional proteomics for studying protease processing events.
  • To summarize findings on the role of proteases in cell death pathways.
  • To highlight the integration of proteomics, protease biology, and cell death research.

Main Methods:

  • Positional proteomics techniques for large-scale screening.
  • Analysis of protease processing events in the context of cell death.
  • Literature review of studies at the interface of proteomics and cell death.

Main Results:

  • Positional proteomics enables proteome-wide screening of protease activity.
  • Significant insights into protease-dependent mechanisms of cell death have been gained.
  • The interplay between proteases and cell death is increasingly understood.

Conclusions:

  • Positional proteomics is a powerful tool for dissecting protease functions in cell death.
  • Further research at this interdisciplinary interface promises deeper biological understanding.
  • This field is rapidly evolving with significant implications for biology and medicine.