1. Cell Cycle/DNA Damage Apoptosis
  2. Antifolate Apoptosis
  3. Pralatrexate

Pralatrexate is an antifolate and is a potent dihydrofolate reductasean (DHFR) inhibitor with a Ki of 13.4 pM. Pralatrexate is a substrate for folylpolyglutamate synthetase with improved cellular uptake and retention. Pralatrexate has antitumor activities and has the potential for relapsed/refractory T-cell lymphoma treatment. Pralatrexate is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.

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Pralatrexate Chemical Structure

Pralatrexate Chemical Structure

CAS No. : 146464-95-1

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Based on 4 publication(s) in Google Scholar

Other Forms of Pralatrexate:

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  • Purity & Documentation

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Description

Pralatrexate is an antifolate and is a potent dihydrofolate reductasean (DHFR) inhibitor with a Ki of 13.4 pM. Pralatrexate is a substrate for folylpolyglutamate synthetase with improved cellular uptake and retention. Pralatrexate has antitumor activities and has the potential for relapsed/refractory T-cell lymphoma treatment[1][2][3][4]. Pralatrexate is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.

IC50 & Target

Ki: 13.4 pM (Dihydrofolate reductasean (DHFR))[4]

In Vitro

Pralatrexate (100 pM-200 μM; 48-72 hours; T-lymphoma cell lines) treatment exhibits concentration- and time-dependent cytotoxicity against a broad panel of T-lymphoma cell lines. The IC50 values at 48 and 72 hours, respectively, are as follows: H9 cells, 1.1 nM and 2.5 nM; P12 cells, 1.7 nM and 2.4 nM; CEM cells, 3.2 nM and 4.2 nM; PF-382 cells, 5.5 nM and 2.7 nM; KOPT-K1 cells, 1 nM and 1.7 nM; DND-41 cells, 97.4 nM and 1.2 nM; and HPB-ALL cells, 247.8 nM and 0.77 nM. HH cells are relatively resistant after 48 hours of exposure, with the IC50 at 72 hours being 2.8 nM[1].
Pralatrexate (2-5.5 nM; 48-72 hours; H9, HH, P12 and PF382 cells) treatment induces potent apoptosis, and caspase-8 and caspase-9 activation[1].
Pralatrexate (3 nM; 16-48 hours; H9 and P12 cells) treatment clearly increases p27 levels and increases the accumulation of educed folate carrier type 1 (RFC-1) in cells[1].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

Cell Cytotoxicity Assay[1]

Cell Line: T-lymphoma cell lines
Concentration: 100 pM-200 µM
Incubation Time: 48 hours, 72 hours
Result: Exhibited concentration- and time-dependent cytotoxicity against a broad panel of T-lymphoma cell lines.

Apoptosis Analysis[1]

Cell Line: H9, HH, P12 and PF382 cells
Concentration: 2 nM, 3 nM, 4 nM, 5.5 nM
Incubation Time: 48 hours, 72 hours
Result: Induced potent apoptosis and caspase activation.

Western Blot Analysis[1]

Cell Line: H9 and P12 cells
Concentration: 3 nM
Incubation Time: 16 hours, 24 hours, 48 hours
Result: Clearly increased p27 levels and increased the accumulation of RFC-1 in cells.
In Vivo

The addition of Pralatrexate (15 mg/kg; intraperitoneal injection; on days 1, 4, 8, and 11; SCID-beige mice) to Bortezomib (0.5 mg/kg) enhanced efficacy compared with either drug alone[1].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

Animal Model: SCID-beige mice (5-7-week-old) injected with HH cells[1]
Dosage: 15 mg/kg
Administration: Intraperitoneal injection; on days 1, 4, 8, and 11
Result: Showed superior efficacy in T-cell malignancies.
Clinical Trial
Molecular Weight

477.47

Formula

C23H23N7O5

CAS No.
Appearance

Solid

Color

Light yellow to yellow

SMILES

O=C(CC[C@H](NC(C1=CC=C(C=C1)C(CC#C)CC2=NC3=C(N=C(N=C3N=C2)N)N)=O)C(O)=O)O

Shipping

Room temperature in continental US; may vary elsewhere.

Storage
Powder -20°C 3 years
4°C 2 years
In solvent -80°C 2 years
-20°C 1 year
Solvent & Solubility
In Vitro: 

DMSO : ≥ 50 mg/mL (104.72 mM; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

*"≥" means soluble, but saturation unknown.

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 2.0944 mL 10.4719 mL 20.9437 mL
5 mM 0.4189 mL 2.0944 mL 4.1887 mL
View the Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.

  • Molarity Calculator

  • Dilution Calculator

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

Mass
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Concentration
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Volume
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Molecular Weight *

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start)

C1

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Volume (start)

V1

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C2

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Volume (final)

V2

In Vivo:

Select the appropriate dissolution method based on your experimental animal and administration route.

For the following dissolution methods, please ensure to first prepare a clear stock solution using an In Vitro approach and then sequentially add co-solvents:
To ensure reliable experimental results, the clarified stock solution can be appropriately stored based on storage conditions. As for the working solution for in vivo experiments, it is recommended to prepare freshly and use it on the same day.
The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.

  • Protocol 1

    Add each solvent one by one:  10% DMSO    40% PEG300    5% Tween-80    45% Saline

    Solubility: ≥ 2.5 mg/mL (5.24 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 400 μL PEG300, and mix evenly; then add 50 μL Tween-80 and mix evenly; then add 450 μL Saline to adjust the volume to 1 mL.

    Preparation of Saline: Dissolve 0.9 g sodium chloride in ddH₂O and dilute to 100 mL to obtain a clear Saline solution.
  • Protocol 2

    Add each solvent one by one:  10% DMSO    90% (20% SBE-β-CD in Saline)

    Solubility: ≥ 2.5 mg/mL (5.24 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 900 μL 20% SBE-β-CD in Saline, and mix evenly.

    Preparation of 20% SBE-β-CD in Saline (4°C, storage for one week): 2 g SBE-β-CD powder is dissolved in 10 mL Saline, completely dissolve until clear.
In Vivo Dissolution Calculator
Please enter the basic information of animal experiments:

Dosage

mg/kg

Animal weight
(per animal)

g

Dosing volume
(per animal)

μL

Number of animals

Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Please enter your animal formula composition:
%
DMSO +
+
%
Tween-80 +
%
Saline
Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
The co-solvents required include: DMSO, . All of co-solvents are available by MedChemExpress (MCE). , Tween 80. All of co-solvents are available by MedChemExpress (MCE).
Calculation results:
Working solution concentration: mg/mL
Method for preparing stock solution: mg drug dissolved in μL  DMSO (Stock solution concentration: mg/mL).
The concentration of the stock solution you require exceeds the measured solubility. The following solution is for reference only. If necessary, please contact MedChemExpress (MCE).
Method for preparing in vivo working solution for animal experiments: Take μL DMSO stock solution, add μL . μL , mix evenly, next add μL Tween 80, mix evenly, then add μL Saline.
 If the continuous dosing period exceeds half a month, please choose this protocol carefully.
Please ensure that the stock solution in the first step is dissolved to a clear state, and add co-solvents in sequence. You can use ultrasonic heating (ultrasonic cleaner, recommended frequency 20-40 kHz), vortexing, etc. to assist dissolution.
Purity & Documentation

Purity: 99.23%

References

Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.

Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
DMSO 1 mM 2.0944 mL 10.4719 mL 20.9437 mL 52.3593 mL
5 mM 0.4189 mL 2.0944 mL 4.1887 mL 10.4719 mL
10 mM 0.2094 mL 1.0472 mL 2.0944 mL 5.2359 mL
15 mM 0.1396 mL 0.6981 mL 1.3962 mL 3.4906 mL
20 mM 0.1047 mL 0.5236 mL 1.0472 mL 2.6180 mL
25 mM 0.0838 mL 0.4189 mL 0.8377 mL 2.0944 mL
30 mM 0.0698 mL 0.3491 mL 0.6981 mL 1.7453 mL
40 mM 0.0524 mL 0.2618 mL 0.5236 mL 1.3090 mL
50 mM 0.0419 mL 0.2094 mL 0.4189 mL 1.0472 mL
60 mM 0.0349 mL 0.1745 mL 0.3491 mL 0.8727 mL
80 mM 0.0262 mL 0.1309 mL 0.2618 mL 0.6545 mL
100 mM 0.0209 mL 0.1047 mL 0.2094 mL 0.5236 mL
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Pralatrexate Related Classifications

Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

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