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Necrosis

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...

Overview of Cell Death

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...

Phagocytosis of Apoptotic Cells

Phagocytosis of Apoptotic Cells

Cells undergoing apoptosis form apoptotic bodies that must be removed immediately to prevent inflammation, autoimmune diseases, and necrosis. Phagocytosis is carried out by professional phagocytes such as macrophages or immature dendritic cells. Non-professional phagocytes such as epithelial cells and fibroblasts also take part in this process; however, they are not as effective as professional phagocytes.
Normal cells contain receptors that prevent them from being recognized...

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Related Experiment Video

Updated: Feb 23, 2026

Characterization of MLKL-mediated Plasma Membrane Rupture in Necroptosis

Characterization of MLKL-mediated Plasma Membrane Rupture in Necroptosis

Published on: August 7, 2018

Phase separation in necrotic cells.

Priyanka S Rana¹, Nathan J Mudrak¹, Roxlee Lopez²

¹Department of Biological Sciences, Kent State University, Kent, OH, USA.

Biochemical and Biophysical Research Communications

|September 2, 2017

Summary

This summary is machine-generated.

Necrotic cells form membrane blebs with significantly lower protein concentrations. Protein aggregation in the cell body drives proteins out of blebs, maintaining osmotic balance during cell death.

Keywords:

Blebbing Cell death Cell volume

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Area of Science:

Cell Biology
Biophysics

Background:

Necrotic cells exhibit membrane blebbing, a phenomenon involving the formation of protrusions from the cell surface.
The protein concentration within these blebs is significantly lower than in the main cell body (CB).

Purpose of the Study:

To investigate the mechanisms behind protein depletion in necrotic blebs.
To understand how osmotic equilibrium is maintained between the bleb and the main cell body.

Main Methods:

Quantitative measurement of protein concentration in necrotic blebs.
Photobleaching experiments to assess protein dynamics.
Ultracentrifugation to analyze protein aggregation.

Main Results:

Protein concentration in necrotic blebs can be reduced by up to twenty-fold compared to the CB.
Evidence suggests extensive protein aggregation within the cell body.
Protein aggregation in the CB appears to shift chemical equilibrium, drawing proteins from the bleb.

Conclusions:

Protein aggregation in the cell body is a key factor in protein redistribution during necrosis.
This aggregation reduces the effective molar concentration in the CB, enabling osmotic equilibrium with protein-poor blebs.