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ABL127

Cat No.:V9949 Purity: ≥98%
ABL127 is a selective and covalent protein methylesterase 1 (PME-1) inhibitor (antagonist) with IC50s of 6.4 and 4.2 nM in HEK293T and MDA-MB-231 cells, respectively.
ABL127
ABL127 Chemical Structure CAS No.: 1073529-41-5
Product category: New1
This product is for research use only, not for human use. We do not sell to patients.
Size Price Stock Qty
1mg
5mg
10mg
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Product Description
ABL127 is a selective and covalent protein methylesterase 1 (PME-1) inhibitor (antagonist) with IC50s of 6.4 and 4.2 nM in HEK293T and MDA-MB-231 cells, respectively.
Biological Activity I Assay Protocols (From Reference)
ln Vitro
In this experiment, three known PME-1 inhibitors were examined, and thermal shifts of 100 μM ABL127 were found. The protein melting temperature was also seen to alter when 25 or 50 μM ABL127 was used. Similar to PME-1 depletion using shRNA, it was discovered that treating Ishikawa cells with ABL127 and AMZ-30 dramatically decreased cell growth. Additionally, it was shown that ABL127 or AMZ-30 treatment had a dose-dependent effect on cell invasion in ECC-1 cells. Protein phosphatase 2A (PP2A) activity in EC cells treated with ABL127 increases significantly to about 45%, but treatment with AMZ-30 causes PP2A activity to increase just slightly to around 10% [1].
ln Vivo
These pilot investigations did not allow for the assessment of significant reductions in tumor burden [1]. Brain PME-1 is inactivated by ABL127, according to gel-based study, however accurate measurement of the degree of inactivation is hampered by overlapping serine hydrolase activity [2].
References

[1]. Inhibition of protein methylesterase 1 decreased cancerous phenotypes in endometrial adenocarcinoma cell lines and xenograft tumor models. Tumour Biol. 2016 Sep;37(9):11835-11842.

[2]. Academic cross-fertilization by public screening yields a remarkable class of protein phosphatase methylesterase-1 inhibitors. Proc Natl Acad Sci U S A. 2011 Apr 26;108(17):6811-6.

These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C17H20N2O5
Molecular Weight
332.351104736328
Exact Mass
332.137
CAS #
1073529-41-5
PubChem CID
24856225
Appearance
Typically exists as solid at room temperature
Density
1.3±0.1 g/cm3
Boiling Point
422.8±48.0 °C at 760 mmHg
Flash Point
209.5±29.6 °C
Vapour Pressure
0.0±1.0 mmHg at 25°C
Index of Refraction
1.586
LogP
2.78
Hydrogen Bond Donor Count
0
Hydrogen Bond Acceptor Count
5
Rotatable Bond Count
4
Heavy Atom Count
24
Complexity
525
Defined Atom Stereocenter Count
1
SMILES
N1(C(OC)=O)C(=O)[C@@](C2CCCC2)(C2=CC=CC=C2)N1C(OC)=O
InChi Key
ZRHWCAFAIHTQKD-KRWDZBQOSA-N
InChi Code
InChI=1S/C17H20N2O5/c1-23-15(21)18-14(20)17(13-10-6-7-11-13,19(18)16(22)24-2)12-8-4-3-5-9-12/h3-5,8-9,13H,6-7,10-11H2,1-2H3/t17-/m0/s1
Chemical Name
dimethyl (3R)-3-cyclopentyl-4-oxo-3-phenyldiazetidine-1,2-dicarboxylate
HS Tariff Code
2934.99.9001
Storage

Powder      -20°C    3 years

                     4°C     2 years

In solvent   -80°C    6 months

                  -20°C    1 month

Shipping Condition
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
Solubility Data
Solubility (In Vitro)
DMSO : ≥ 100 mg/mL (~300.89 mM)
Solubility (In Vivo)
Solubility in Formulation 1: 2.5 mg/mL (7.52 mM) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (add these co-solvents sequentially from left to right, and one by one), suspension solution; with sonication.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 400 μL PEG300 and mix evenly; then add 50 μL Tween-80 to the above solution and mix evenly; then add 450 μL normal saline to adjust the volume to 1 mL.
Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution.

Solubility in Formulation 2: ≥ 2.5 mg/mL (7.52 mM) (saturation unknown) in 10% DMSO + 90% (20% SBE-β-CD in Saline) (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 900 μL of 20% SBE-β-CD physiological saline solution and mix evenly.
Preparation of 20% SBE-β-CD in Saline (4°C,1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution.

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Solubility in Formulation 3: ≥ 2.5 mg/mL (7.52 mM) (saturation unknown) in 10% DMSO + 90% Corn Oil (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 900 μL of corn oil and mix evenly.


 (Please use freshly prepared in vivo formulations for optimal results.)
Preparing Stock Solutions 1 mg 5 mg 10 mg
1 mM 3.0089 mL 15.0444 mL 30.0888 mL
5 mM 0.6018 mL 3.0089 mL 6.0178 mL
10 mM 0.3009 mL 1.5044 mL 3.0089 mL

*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.

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What volume of a given 10 mM stock solution is required to make 25 ml of a 25 μM solution?
Using the equation C1V1 = C2V2, where C1=10 mM, C2=25 μM, V2=25 ml and V1 is the unknown:
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Note: Chemical formula is case sensitive: C12H18N3O4  c12h18n3o4
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In vivo Formulation Calculator (Clear solution)
Step 1: Enter information below (Recommended: An additional animal to make allowance for loss during the experiment)
Step 2: Enter in vivo formulation (This is only a calculator, not the exact formulation for a specific product. Please contact us first if there is no in vivo formulation in the solubility section.)
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Calculation results

Working concentration mg/mL;

Method for preparing DMSO stock solution mg drug pre-dissolved in μL DMSO (stock solution concentration mg/mL). Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug.

Method for preparing in vivo formulation:Take μL DMSO stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O,mix and clarify.

(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
             (2) Be sure to add the solvent(s) in order.

Biological Data
  • Discovery of selective ABL inhibitors of PME-1. (A) Four ABLs (ABL127, ABL103, ABL105, and ABL107) identified as active in the MLPCN screen. (B) Chemistry space coordinates for compounds (colored red in high occupancy cells; colored blue in low occupancy cells) that were screened against PME-1. The 26 ABLs (shown as enlarged squares; all other compounds are shown as small circles) are located in a sparsely populated region of chemical space. This optimized 6-dimensional BCUTs (31) visualization of chemistry space for the compound library was generated using the standard 3D hydrogen suppressed descriptors with Diverse Solutions (Diverse Solutions, Tripos), with coverage illustrated by compression into an optimized two-dimensional BCUTs space as described in more detail previously (32). (C) Evaluation of compounds by gel-based competitive ABPP with FP-Rh (2 μM) in the soluble proteome (1 mg/mL protein) of MDA-MB-231 cells. (D) Complete PME-1 IC50 curves for ABL127 (4.2 nM; 95% confidence limits 2.3–7.5 nM) and ent-ABL127 (450 nM; 95% confidence limits 240–850 nM) in the soluble proteome of MDA-MB-231 cells (for IC50 curves of ABL103, ABL105, and ABL107, see Fig. S2). Data are presented as mean values ± SEM; n = 3/group. (E) Pretreatment of HEK 293T proteomes with ABL127 (500 nM, 30 min) before addition of purified PME-1 (500 nM, 1 h) blocks PP2A demethylation as determined by Western blotting with antibodies that recognize specific methylation states of PP2A.[2]. Academic cross-fertilization by public screening yields a remarkable class of protein phosphatase methylesterase-1 inhibitors. Proc Natl Acad Sci U S A. 2011 Apr 26;108(17):6811-6.
  • ABLs are covalent inhibitors of PME-1. (A) Proposed mechanism for covalent PME-1 inhibition by ABL127. (B) PME-1 (500 nM) was incubated with DMSO or ABL127 (5 μM), and each reaction was split into two fractions. One fraction was directly labeled with FP-Rh (left panels), and the other was subjected to gel-filtration to remove free inhibitor and then reacted with FP-Rh (right panels) to determine the reversibility of inhibition. (C) MS1 traces for the PME-1 active site peptide not adducted (top panel) or adducted (bottom panel) to ABL127. See SI Materials and Methods for more information on this experiment. Traces were obtained from tryptic digests of purified, recombinant PME-1 (10 μM) treated with ABL127 (50 μM, red trace) or DMSO (black trace).[2]. Academic cross-fertilization by public screening yields a remarkable class of protein phosphatase methylesterase-1 inhibitors. Proc Natl Acad Sci U S A. 2011 Apr 26;108(17):6811-6.
  • ABL127 selectively inactivates PME-1 and decreases the demethylated form of PP2A in cells. (A) Gel-based competitive ABPP of the soluble proteomes from MDA-MB-231 cells treated with ABL127 (0.61–10,000 nM; 1 h) reveals selective blockade of PME-1 with (B) an IC50 value of 11.1 nM. (C) Isotopically “light” and “heavy” MDA-MB-231 cells were treated with DMSO or ABL127 (100 nM), respectively, for 1 h. Proteomes were combined in a 1∶1 total protein ratio (0.5 mg each), analyzed by ABPP-MudPIT, and serine hydrolase activities were quantified by comparing intensities of light and heavy peptide peaks (see Fig. S4 for additional SILAC ABPP-MudPIT analyses). Data are presented as mean values ± SEM for all quantifiable peptides from each serine hydrolase. (D and E) MDA-MB-231 and HEK 293T cells treated with ABL127 (500 nM, 1 h) exhibit significant reductions in demethylated PP2A. (F) Stable overexpression of PME-1 in HEK 293T cells compared to control cells overexpressing GFP. PME-1 is completely inhibited by ABL127 (500 nM, 1 h) in both cell lines. (G and H) Cells overexpressing PME-1 show decreased PP2A methylation, which is reversed by addition of ABL127 (500 nM, 1 h). (I) Time-course for PME-1 inhibition by ABL127 (500 nM) in PME-1-overexpressing HEK 293T cells. For E and I: *p < 0.05, **p < 0.01 for DMSO-treated versus ABL127-treated cells. #p < 0.05, ##p < 0.01 for cells overexpressing GFP versus PME-1. Data are presented as mean values ± SEM; n = 3/group.[2]. Academic cross-fertilization by public screening yields a remarkable class of protein phosphatase methylesterase-1 inhibitors. Proc Natl Acad Sci U S A. 2011 Apr 26;108(17):6811-6.
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