2. Signaling Pathways
  3. Apoptosis
  4. Bcl-2 Family

Bcl-2 Family

Bcl-2 Family

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Bcl-2 is a family of evolutionarily related proteins. These proteins govern mitochondrial outer membrane permeabilization (MOMP) and can be either pro-apoptotic (Bax, Bad, Bak and Bok among others) or anti-apoptotic (including Bcl-2 proper, Bcl-xL, and Bcl-w, among an assortment of others). There are a total of 25 genes in the Bcl-2 family known to date. Human genes encoding proteins that belong to this family include: Bak1, Bax, Bal-2, Bok, Mcl-1.

Bcl-2 Family Isoform Specific Products:

Bcl-2 Family Isoform Comparison
Cat. No. Product Name Effect Purity Chemical Structure
  • HY-163293
    Mcl-1 inhibitor 18
    		Inhibitor
    Mcl-1 inhibitor 18 (compound 57) is a myeloid cell leukemia 1 (Mcl-1) inhibitor, and can be used for study of cancer.
    Mcl-1 inhibitor 18
  • HY-W689801
    A-1208746
    		Inhibitor
    A-1208746 is an inhibitor for MCL-1, with a Ki of 0.454 nM. A-1208746 activates caspase-3/-7, induces apoptosis in cell H929, and decreases mitochondrial membrane potential. A-1208746 synergies with Navitoclax (HY-10087), and can be used in cancer research.
    A-1208746
  • HY-123020
    CYD-2-88
    		Antagonist
    CYD-2-88 (BDA-366 analog) is a BDA-366 (HY-101083) (Bcl2 BH4 antagonist) analog. CYD-2-88 (20 mg/kg, i.p.) inhibits tumor growth in NSCLC H460 xenografts mice.
    CYD-2-88
  • HY-170946
    WR-S-462
    		Inhibitor
    WR-S-462 is a STAT3 inhibitor. WR-S-462 effectively suppresses STAT3 phosphorylation and biological functions in vitro. WR-S-462 inhibits MDA-MB-231 cells with an IC50 of 0.03 μM. WR-S-462 displays a strong binding affinity towards the STAT3 protein with a Kd of 58 nM. WR-S-462 inhibits the nuclear translocation of p-STAT3, selectively inhibits the expression of p-STAT3Tyr705 and downstream target genes regulated by STAT3 in MDA-MB-231 cells such as Cyclin D1, Bcl-2, and Bcl-xl. WR-S-462 inhibits TNBC (triple-negative breast cancer) growth and metastasis.
    WR-S-462
  • HY-144428
    Bcl-2/Mcl-1-IN-2
    		Inhibitor
    Bcl-2/Mcl-1-IN-2 (compound 2) is a Bcl-2/Mcl-1 inhibitor, with Kis of 0.88 μM and 4.70 μM for Mcl-1 and Bcl-2, respectively. Bcl-2/Mcl-1-IN-2 can be used for the research of cancer.
    Bcl-2/Mcl-1-IN-2
  • HY-143235
    BRD4 Inhibitor-15
    		Modulator
    BRD4 Inhibitor-15 (compound 13) is a potent BRD4 inhibitor, with an IC50 of 18 nM. BRD4 Inhibitor-15 induces apoptosis of 22RV1 cells by regulating Bcl-2/Bax proteins and activating caspase-3 signaling pathway. BRD4 Inhibitor-15 down-regulates the c-Myc level in 22RV1 cells. BRD4 Inhibitor-15 can be used for prostate cancer research.
    BRD4 Inhibitor-15
  • HY-162642
    Bfl-1-IN-3
    		Inhibitor
    Bfl-1-IN-3 (Compound 56) is a selective, competitive inhibitor for Bfl-1 on BID binding site with Ki of 105 nM. Bfl-1-IN-3 inhibits the proliferation of cell pfeiffer and MV4-11, with IC50 of 6.92 μM and 12.6 μM. Bfl-1-IN-3 induces apoptosis in pfeiffer cells. Bfl-1-IN-3 overcomes Venetoclax (HY-15531) resistance at the cellular level, and shows synergistically enhanced anti-tumor activity with Venetoclax.
    Bfl-1-IN-3
  • HY-159588
    Mcl-1 inhibitor 20
    		Inhibitor
    Mcl-1 inhibitor 20 (compound 47) is a Mcl-1 inhibitor with anti-leukemic effects. Mcl-1 inhibitor 20 can bind to the BH3 binding groove of Mcl-1 (Ki=24 nM), occupy the P1 pocket in Mcl-1, and form interactions with Lys234 and Val249. Mcl-1 inhibitor 20 has good microsomal stability, pharmacokinetic characteristics and low cardiotoxicity.
    Mcl-1 inhibitor 20
  • HY-146038
    Antitumor agent-55
    		Inhibitor
    Antitumor agent-55 (compound 5q) is a potent antitumor agent. Antitumor agent-55 effectively inhibits PC3, with an IC50 of 0.91 μM. Antitumor agent-55 effectively inhibits the colony formation, suppresses the cell migration in PC3. Antitumor agent-55 induces G1/S phase arrest and apoptosis in PC3.
    Antitumor agent-55
  • HY-150266
    A-1293102
    		Inhibitor
    A-1293102 is a potent and selective BCL-XL inhibitor that kills BCL-XL-dependent tumor cells.
    A-1293102
  • HY-RS01416
    Bcl2 Mouse Pre-designed siRNA Set A
    		Inhibitor

    Bcl2 Mouse Pre-designed siRNA Set A contains three designed siRNAs for Bcl2 gene (Mouse), as well as a negative control, a positive control, and a FAM-labeled negative control.
    Bcl2 Mouse Pre-designed siRNA Set A
  • HY-174419
    TFSeB
    		Activator
    TFSeB is an orally active neuroprotective agent. TFSeB can reduce Streptozotocin (STZ) (HY-13753) induced MAO-B and AChE activity. TFSeB exerts neuroprotective effects by increasing the expression of BCL-2, BDNF, NRF2, and decreasing the expression of BAX. TFSeB can reduce lipid peroxidation (TBARS) and reactive oxygen species (ROS) levels. TFSeB can reduce neuroinflammation. TFSeB can be used for research on Alzheimer’s disease.
    TFSeB
  • HY-151428
    Antitumor agent-78
    		Inhibitor
    Antitumor agent-78 is an antitumor agent, inhibits cancer cells growth and migration. Antitumor agent-78 triggers ferroptosis by inhibiting GPx-4 and elevating COX2. Antitumor agent-78 also activates intrinsic apoptotic pathway (Bax-Bcl-2-caspase-3) and hinders Epithelial-mesenchymal transition (EMT) process of cancer cells.
    Antitumor agent-78
  • HY-149517
    EGFR/BRAFV600E-IN-2
    		Activator
    EGFR/BRAFV600E-IN-2 (compound 3g) is a potential multi-target inhibitor of EGFR, BRAFV600E, and EGFRT790M, and an inducer of apoptosis. EGFR/BRAFV600E-IN-2 can activate caspase-3, 8, and Bax, and downregulate the anti-apoptotic protein Bcl2, inducing apoptosis. EGFR/BRAF V600E-IN-2 also has antioxidant activity and DPPH free radical scavenging potency.
    EGFR/BRAFV600E-IN-2
  • HY-150507
    JNJ-4355
    		Inhibitor
    JNJ-4355, a chemical probe, is a highly potent MCL-1 (myeloid cell leukemia-1) inhibitor, with KI of 18 pM. JNJ-4355 shows antitumor activity.
    JNJ-4355
  • HY-P5324
    Bad BH3 (mouse)
    Bad BH3 (mouse) is a biological active peptide. (This is a bcl-2 binding peptide. This peptide is derived from the BH3 domain (a death domain) of Bad, amino acid residues 140 to 165.)
    Bad BH3 (mouse)
  • HY-149522
    WK499
    		Inhibitor
    BCL6-IN-10 (Compound WK499) is a BCL6 inhibitor. BCL6-IN-10 interrupts the binding of BCL6 to SMRT protein. BCL6-IN-10 induces cell apoptosis, cell cycle arrest and DNA damage. BCL6-IN-10 inhibits AML cell proliferation (IC50s: 0.91, 1.63, 1.026, 7.42, 0.87, 0.85μM for OCl-AML3, THP1, MOLM13, HL60, KG1, NB4 cell respectively).
    WK499
  • HY-W042191R
    Oxychlororaphine (Standard)
    		Modulator
    Oxychlororaphine (Standard) is the analytical standard of Oxychlororaphine. This product is intended for research and analytical applications. Oxychloroaphine could be isolated from the bacterium Pantoea agglomerans naturally present in soil. Oxychloroaphine has broad-spectrum antifungal activity. Oxychloroaphine has cytotoxicity in a dose-dependent manner and induces apoptosis. Oxychloroaphine can be used in research of cancer[1][2].
    Oxychlororaphine (Standard)
  • HY-100866A
    F1324 TFA
    		Inhibitor
    F1324 TFA is a potent, high affinity peptidic inhibitor of B cell lymphoma 6 (BCL6), with an IC50 of 1 nM. F1324 TFA exhibits binding t1/2 value of 441 s and has strong inhibition activity against BCL6 PPI.
    F1324 TFA
  • HY-N1218
    Stellasterol
    Stellasterol is a natural product. Stellasterol has high affinity towards Bcl-2 protein (Ki: 118.05 nM). Stellasterol is a weak α-glucosidase inhibitor.
    Stellasterol
Cat. No. Product Name / Synonyms Application Reactivity
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Download Bcl-2 Family Signaling Pathway Map.

Bcl-2 family members have been grouped into three classes. The anti-apoptotic subfamily contains the Bcl-2, Bcl-XL, Bcl-w, Mcl-1, Bfl1/A-1, and Bcl-B proteins, which suppress apoptosis and contain all four Bcl-2 homology domains, designated BH1-4. The pro-apoptotic subfamily contain BH1-3 domains, such as Bax, Bak, and Bok. A third class of BH3 only proteins Bad, Bid, Bim, Noxa and Puma have a conserved BH3 domain that can bind and regulate the anti-apoptotic BCL-2 proteins to promote apoptosis [1].


The intrinsic pathway is initiated by various signals, principally extracellular stimuli. BH3-only proteins (Bim, Bid, Bad, Noxa, Puma) engage with anti-apoptotic Bcl-2 family proteins to relieve their inhibition of Bax and Bak to activate them. Next, Bax and Bak are oligomerized and activated, leading to mitochondrial outer membrane permeabilization. Once mitochondrial membranes are permeabilized, cytochrome c and/or Smac/DIABLO is released into the cytoplasm, wherein they combine with an adaptor molecule, Apaf-1, and an inactive initiator Caspase, Pro-caspase 9, within a multiprotein complex called the apoptosome. Smac/DIABLO inhibits IAPs to activate Caspase 9. Caspase 9 activates Caspase 3, which is the initiation step for the cascade of Caspase activation. The extrinsic pathway can be activated by cell surface receptors, such as Fas and TNF Receptor, subsequently activating Caspase 8, and leads to Caspase 3 activation and cell demolition. Caspases in turn cleave a series of substrates, activate DNases and orchestrate the demolition of the cell. Bcl-2 family proteins are also found on the endoplasmic reticulum and the perinuclear membrane in hematopoietic cells, but they are predominantly localized to mitochondria [2]. 

 

Reference:
[1]. Cotter TG, et al. Apoptosis and cancer: the genesis of a research field. Nat Rev Cancer. 2009 Jul;9(7):501-7.

[2]. Kang MH, et al. Bcl-2 inhibitors: targeting mitochondrial apoptotic pathways in cancer therapy. Clin Cancer Res. 2009 Feb 15;15(4):1126-32.

Bcl-2 Family Isoform Comparison

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