1. Signaling Pathways
  2. Apoptosis
  3. Necroptosis


Necroptosis is a form of regulated necrotic cell death mediated by receptor-interacting serine-threonine kinase 3 (RIPK3) and mixed lineage kinase domain-like (MLKL) and generally manifests with morphological features of necrosis. Necroptosis is characterized by early loss of plasma membrane integrity, leakage of intracellular contents, and organelle swelling. The cells dying through necroptosis lack the typical apoptotic characteristics, such as membrane blebbing, chromatin condensation, and intranucleosomal DNA cleavage into 180 bp DNA laddering, but may show TUNEL positivity.

Necroptosis triggers innate immune responses by rupturing dead cells and releasing intracellular components, it can be caused by Toll-like receptor (TLR)-3 and TLR-4 agonists, tumor necrosis factor (TNF), certain microbial infections, and T cell receptors. Necroptosis signaling is modulated by receptor-interacting protein kinase (RIPK) 1 when the activity of caspase-8 becomes compromised. Activated death receptors (DRs) cause the activation of receptor-interacting serine-threonine kinase 1 (RIPK1) and the RIPK1 kinase activity-dependent formation of an RIPK1-RIPK3-MLKL, which is complex II. RIPK3 phosphorylates MLKL, ultimately leading to necrosis through plasma membrane disruption and cell lysis.

Necroptosis Related Products (5):

Cat. No. Product Name Effect Purity
  • HY-135826
    Inhibitor 98.39%
    Necroptosis-IN-1, an analog of Necrostatin-1, is a potent necroptosis inhibitor. Necroptosis-IN-1 is a RIPK inhibitor.
  • HY-N3417
    Kongensin A
    Inhibitor ≥98.0%
    Kongensin A is a natural product isolated from Croton kongensis. Kongensin A is an effective, covalent HSP90 inhibitor that blocks RIP3-dependent necroptosishas. Kongensin A is a potent necroptosis inhibitor and an apoptosis inducer. Kongensin A has potential anti-necroptosis and anti-inflammation applications.
  • HY-134050
    Apostatin-1 (Apt-1) is a potent TRADD inhibitor. Apostatin-1 can bind with TRADD-N (KD=2.17 μM), disrupting its binding to both TRADD-C and TRAF2. Apostatin-1 modulates the ubiquitination of RIPK1 and beclin 1. Apostatin-1 blocks apoptosis and restores cellular homeostasis by activating autophagy in cells with accumulated mutant tau, α-synuclein, or huntingtin.
  • HY-117200
    Necrotatin-7 (Nec-7) is a potent necroptosis inhibitor with an EC50 of 10.6 μM. Necrotatin-7 does not inhibit recombinant RIP1 kinase.
  • HY-144277
    RIPK1-IN-12 is a potent RIPK1 inhibitor. RIPK1-IN-12 inhibits necroptosis in both human and mouse cells, with EC50 values of 1.6 and 2.9 nM, respectively.
  • HY-144828
    RIP1/RIP3/MLKL activator 1
    RIP1/RIP3/MLKL activator 1 (Compound 6i) is a potent anti-glioma agent. RIP1/RIP3/MLKL activator 1 induces necroptosis through RIP1/RIP3/MLKL pathway. RIP1/RIP3/MLKL activator 1 exerts acceptable BBB permeability.
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