HA14-1

Catalog No.S1071

HA14-1 Chemical Structure

Molecular Weight(MW): 409.23

HA14-1 is a non-peptidic ligand of a Bcl-2 surface pocket with IC50 of ~9 μM.

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1 Customer Review

  • ABT-737, Obatoclax, and HA14-1 eradicated the H1975 early tumor prosurvival resistance against dual-TKIs inhibition by erlotinib/SU11274 (ERL/SU). The experiment was carried out with H1975 cells , cells were pretreated with dual EGFR-MET inhibitors here, i.e., erlotinib (1 μmol/L)/SU11274 (1 μmol/L). BH3-mimetic used in treatment days 7-9 were all 2 μmol/L in concentration. Top, crystal violet cell survival staining assay. Bottom, BH3-mimetic treatment of the dual ERL/SU-resistant tumor cells induced a proapoptotic response.

    Cancer Res 2011 71(13), 4494-505. HA14-1 purchased from Selleck.

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Biological Activity

Description HA14-1 is a non-peptidic ligand of a Bcl-2 surface pocket with IC50 of ~9 μM.
Targets
Bcl-2 [1]
9 μM
In vitro

HA14-1 is a small molecule and nonpeptidic ligand of a Bcl-2 surface pocket with IC50 of approximately 9 μM. HA14-1 induces the apoptosis of HL-60 cells in a dose-dependent manner via caspase activation. [1] HA14-1 shows cytotoxic effects on HF1A3, HF4.9 and HF28RA follicular lymphoma B cell lines with LC50 of 4.5 μM, 12.6 μM and 8.1 μM respectively. HA14-1 induces apoptosis of HF1A3, HF4.9 and HF28RA cells via caspase and ROS. [2]

In vivo HA14-1(400 nM) treatment did not have any significant effect on the growth of glioblastoma tumors in immunodeficient mice. But HA14-1 (400 nM) increases the effect of the DNA-damaging agent etoposide (2.5 mg/Kg) on glioblastoma growth in vivo. [3]

Protocol

Kinase Assay:

[1]

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Affinity determination:

The binding affinity of organic compounds to Bcl-2 protein in vitro is determined by a competitive binding assay based on fluorescence polarization. For this assay, 5-carboxyfluorecein is coupled to the N terminus of a peptide, GQVGRQLAIIGDDINR, derived from the BH3 domain of Bak (Flu-BakBH3), which has been shown to bind to the surface pocket of the Bcl-xL protein with high-affinity. According to our molecular modeling studies and binding measurement using fluorescence polarization, the Flu-BakBH3 peptide binds the surface pocket of Bcl-2 with a similar affinity. Bcl-2 used in this assay is a recombinant GST-fused soluble protein. Flu-BakBH3 and Bcl-2 protein are mixed in the presence or absence of organic compounds under standard buffer conditions and are incubated for 30 min. The binding of Flu-BakBH3 to Bcl-2 protein is measured on a LS-50 luminescence spectrometer equipped with polarizers using a dual path length quartz cell (500 μl). The fluorophore is excited with vertical polarized light at 480 nm (excitation slit width 15 nm), and the polarization value of the emitted light is observed through vertical and horizontal polarizers at 530 nm (emission slit width 15 nm). The binding affinity of each compound for Bcl-2 protein is assessed by determining the ability of different concentrations of the compound to inhibit Flu-BakBH3 binding to Bcl-2.
Cell Research:

[2]

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  • Cell lines: HF1A3, HF4.9 and HF28RA cells
  • Concentrations: ~25 μM
  • Incubation Time: 20 h
  • Method:

    The cytotoxic effects of HA14-1 against different FL cell lines are determined by the MTT assay. Briefly, the cells (5000/well) are incubated in triplicate in 96-well plate in the presence or absence of HA14-1 for 20 h at 37 °C. Thereafter, the MTT solution is added to each well. After 4 h incubation at 37 °C, the optical density (OD) is measured by means of 96-well plate reader, with the extraction buffer as a blank. The following formula is used: percentage cell viability = (OD of the experiment samples/OD of the control) × 100. Sigmoidal dose-response curves are fitted to the mean cell viability plotted against log HA14-1 dose and lethal concentration 50% (LC50) values are calculated from the resulting curves using Prism 4.0 softw


    (Only for Reference)
Animal Research:

[3]

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  • Animal Models: Female Swiss nude mice bearing BeGBM xenografts.
  • Formulation: Free RPMI 1640-50% DMSO.
  • Dosages: 400 nM
  • Administration: Inject at the site of cell injection.
    (Only for Reference)

Solubility (25°C)

In vitro DMSO 82 mg/mL (200.37 mM)
Ethanol 82 mg/mL (200.37 mM)
Water Insoluble
In vivo Add solvents to the product individually and in order:
1% DMSO+30% polyethylene glycol+1% Tween 80
For best results, use promptly after mixing.
30 mg/mL

* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.

Chemical Information

Molecular Weight 409.23
Formula

C17H17BrN2O5

CAS No. 65673-63-4
Storage powder
Synonyms N/A

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Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.

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Bcl-2 Signaling Pathway Map

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Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID