Related Experiment Video

Updated: Aug 15, 2026

A Co-culture Method to Investigate the Crosstalk Between X-ray Irradiated Caco-2 Cells and PBMC
11:40

A Co-culture Method to Investigate the Crosstalk Between X-ray Irradiated Caco-2 Cells and PBMC

Published on: January 30, 2018

[Increased plasma membrane permeability for Ca2+ in radiation-induced thymocyte apoptosis]

A S Shevchenko, V L Gabaĭ, V O Kobialko

    Radiatsionnaia Biologiia, Radioecologiia
    |March 1, 1997
    PubMed
    Summary

    Gamma irradiation increases calcium (Ca2+) influx and disrupts cell membrane permeability in rat thymocytes, preceding DNA fragmentation during apoptosis. This suggests impaired calcium homeostasis contributes to cell death.

    More Related Videos

    Experimental Analysis of Apoptotic Thymocyte Engulfment by Macrophages06:47

    Experimental Analysis of Apoptotic Thymocyte Engulfment by Macrophages

    Published on: May 24, 2019

    A Thermoplasmonic Approach for Investigating Plasma Membrane Repair in Living Cells and Model Membranes06:32

    A Thermoplasmonic Approach for Investigating Plasma Membrane Repair in Living Cells and Model Membranes

    Published on: January 19, 2024

    Related Concept Videos

    Receptor Downregulation in MVBs01:15

    Receptor Downregulation in MVBs

    Multivesicular bodies (MVBs) are mature endosomes that sort ubiquitinated proteins and then fuse with lysosomes to degrade the sorted proteins. Epidermal growth factor (EGF) and its receptor (EGFR) form a complex that can be internalized through endocytosis, sorted into an MVB, and later degraded.
    The EGFR can initiate signaling pathways that  lead to cell proliferation, migration, and differentiation. Overexpression of EGFR  stimulates cells to proliferate. Excessive  EGFR activation may...
    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...
    The Intrinsic Apoptotic Pathway01:31

    The Intrinsic Apoptotic Pathway

    Internal cellular stress, such as cellular injury or hypoxia, triggers intrinsic apoptosis. The B-cell lymphoma 2 (Bcl-2) family of proteins are the primary regulators of the intrinsic apoptotic pathway. For example, during DNA damage, checkpoint proteins, such as Ataxia Telangiectasia Mutated (ATM protein) and Checkpoints Factor-2 (Chk2) proteins, are activated. These proteins phosphorylate p53 which further activates pro-apoptotic proteins, such as Bax, Bak, PUMA, and Noxa, and inhibits...
    Mutations01:35

    Mutations

    Mutations are changes in the sequence of DNA. These changes can occur spontaneously or they can be induced by exposure to environmental factors. Mutations can be characterized in a number of different ways: whether and how they alter the amino acid sequence of the protein, whether they occur over a small or large area of DNA, and whether they occur in somatic cells or germline cells.
    Chromosomal Alterations Are Large-Scale Mutations
    While point mutations are changes in a single nucleotide in...
    Cellular Injury IV: Necrosis01:16

    Cellular Injury IV: Necrosis

    Necrosis is a form of irreversible cell death caused by severe injury such as ischemia, toxins, or trauma. Unlike programmed cell death, it is an uncontrolled, pathological process that typically provokes inflammation in surrounding tissues.Pathophysiologic ChangesNecrosis begins when cells sustain critical damage, leading to swelling of organelles, particularly mitochondria, and rapid ATP depletion. As energy levels decline, membrane ion pumps fail, leading to calcium influx and eventually,...