Apoptosis Analysis
Apoptosis Analysis - Related Videos
08:20
Analysis of Apoptosis in Zebrafish Embryos by Whole-mount Immunofluorescence to Detect Activated Caspase 3
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Cited by 84 •
2013
Certain genetic perturbations or exposure to toxins can disrupt normal developmental processes leading to death of specific cell types. The analysis of activated Caspase 3 by whole-mount immunofluorescence in zebrafish embryos reveals stage- and tissue-specific localization of cells specifically undergoing apoptosis.
01:30
Apoptosis
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2023
Apoptosis is a combination of two Greek words, 'apo' and 'ptosis,' meaning separation and falling off, respectively. Hippocrates used this word to describe gangrene, which was caused due to bandaging of fractured bones. Apoptosis was distinguished from necrosis in 1970 when John Kerr reported observations of morphological changes occurring during apoptosis. During one experiment, he observed that the disruption of blood supply to the liver tissue resulted in a size reduction of the tissue.
07:42
Activation of Apoptosis by Cytoplasmic Microinjection of Cytochrome c
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Cited by 15 •
2011
In this protocol, we describe the direct cytoplasmic microinjection of cytochrome c protein into fibroblasts and primary sympathetic neurons. This technique allows for the introduction of cytochrome c protein into the cytoplasm of cells and mimics the release of cytochrome c from mitochondria, which occurs during apoptosis.
02:58
Immunoblot Analysis of Apoptosis Inhibition in Host Cells Expressing an Antiapoptotic Bacterial Protein
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2026
Source: Berens, C. et al. Applying an Inducible Expression System to Study Interference of Bacterial Virulence Factors with Intracellular Signaling. J. Vis. Exp. (2015)This video demonstrates the use of immunoblotting to assess apoptosis inhibition by the bacterial effector protein CaeB in human cells. It outlines the steps for detecting apoptotic markers following doxycycline-induced expression of pro-apoptotic proteins in host cells expressing the effector.
06:58
Synthesis of an In vivo MRI-detectable Apoptosis Probe
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Cited by 3 •
2012
Early detection of apoptosis may identify at-risk cell populations in a variety of diseases. Here we demonstrate a method to link an early apoptosis-detection protein (Annexin V) to a MRI-detectable iron oxide nanoparticle (SPIO). This method may be extended to other proteins of interest to generate MRI-detectable molecular imaging probes.
FAQs
Caspase activation provides a mechanistic anchor for apoptosis analysis because it drives the characteristic cellular changes associated with programmed cell death. These changes include cell shrinkage, chromatin condensation, DNA fragmentation, membrane blebbing, and apoptotic body formation. Measuring caspase activity therefore helps connect an observed cellular phenotype with the regulated process rather than relying on morphology alone.
Using more than one readout strengthens interpretation because each assay addresses a different aspect of the process. Annexin V staining, DNA-fragmentation assays, and caspase activity tests can be considered alongside microscopy, which displays structural changes such as blebbing or apoptotic bodies. Concordant findings give broader evidence than any single measurement.
Microscopy can capture the structural sequence associated with apoptosis analysis, including shrinkage, chromatin condensation, membrane blebbing, and apoptotic bodies. These visual features help researchers examine cellular morphology directly and relate it to biochemical or DNA-based measurements. This makes microscopy useful when the appearance of cells is important to interpreting results.
A basic analysis plan can pair a caspase activity test with one or more structural or DNA-based measurements. Researchers may add annexin V staining and microscopy to examine complementary indicators, including characteristic cellular changes and DNA fragmentation. This combination supports interpretation of whether observed effects align with apoptosis, without depending on a single result.
In biology, apoptosis analysis can support studies of tissue development, immune regulation, cancer progression, and neurodegeneration. The same group of measurements can reveal regulated cell-death patterns in different biological settings, while microscopy and molecular or DNA-based assays provide complementary evidence. This broad applicability makes the approach useful across multiple areas of cellular research.
Researchers can use apoptosis analysis to examine whether a potential therapeutic compound is associated with caspase activation, DNA fragmentation, or characteristic cellular morphology. Annexin V staining, caspase activity tests, DNA-fragmentation assays, and microscopy offer several ways to assess the response. The resulting measurements help characterize how compound exposure relates to programmed cell death.