RP-2119
Based on 1 Customer Validation
RP-2119 is an orally bioactive Polymerase Theta (Polθ) inhibitor, with an IC50 of 0.7 nM against human Polθ ATPase. RP-2119 reduces Polθ activity and exerts antiproliferative effects in BRCA2-deficient cancer cells. RP-2119 exhibits antitumor activity in BRCA2-deficient cancer cell xenograft mouse models. RP-2119 can be used for the research of cancer and homologous recombination-deficient cancers, including brca1/brca2-mutant cancers and shld2-mutant cancers.
For research use only. We do not sell to patients.
- Purity : 99.94%
- CAS No.: 2922287-81-6
- Formula: C24H19F2N7O2S
- Molecular Weight:507.52
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Storage:Powder -20°C, 3 years , 4°C, 2 years ; In solvent -80°C, 6 months , -20°C, 1 month
To place orders, for customer services and technical support, please contact: MedChemExpress USA
Tel: 609-228-6898 E-mail: [email protected] [email protected]
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Biological Activity
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Chemical Information
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Solvent & Solubility
- Protocols
- Purity & Documentation
- References
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Help & FAQs
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Biological Activity
Description
In Vitro
RP-2119 potently inhibits human Polθ ATPase activity in the ADP-Glo biochemical assay, with an IC50 of 0.7 nM. It also inhibits Polθ ATPase activity in mice, rats, dogs, pigs and chimpanzees, with IC50 values ranging from <1.5 nM to <5 nM in the ADP-Glo biochemical assay[2].
RP-2119 binds to Polθ in K562 cells expressing the ePL-tagged Flag-Polθ helicase domain, with an EC50 of 82 nM in the CETSA assay[2].
RP-2119 (for 12-14 days) potently inhibits the proliferation of DLD-1, HCT 116 and DOTC24510 BRCA2-/- cells, with EC50 values of 45, 51 and 266 nM[2].
RP-2119 inhibits Polθ-mediated MMEJ activity in DLD-1 cells carrying Cas9/sgRNA-induced double-strand breaks at the AAVS1 locus, with an IC50 of 54 nM[2].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only. Further protocols information, click here.
Parmacokinetics
| Species | Dose | Route | CL | Vdss | T1/2 | Bioavailability |
|---|---|---|---|---|---|---|
| Mice[2] | 1 mg/kg | i.v. | 5.0 mL/min/kg | 0.54 L/kg | 2.1 h | / |
| Mice[2] | 2.5 mg/kg | p.o. | / | / | / | 47 % |
| Rat[2] | 0.5 mg/kg | i.v. | 0.54 mL/min/kg | 0.18 L/kg | 5.7 h | / |
| Rat[2] | 2.5 mg/kg | p.o. | / | / | / | 36 % |
| Dog[2] | 0.5 mg/kg | i.v. | 0.13 mL/min/kg | 0.16 L/kg | 11.0 h | / |
| Dog[2] | 1.25 mg/kg | p.o. | / | / | / | 103 % |
| Cynomolgus Monkey[2] | 0.5 mg/kg | i.v. | 2.1 mL/min/kg | 0.67 L/kg | 8.1 h | / |
| Cynomolgus Monkey[2] | 1.25 mg/kg | p.o. | / | / | / | 84 % |
In Vivo
RP-2119 (45 mg/kg; p.o.; once daily; for the entire study duration) enhances the tumor volume reduction effect of Carboplatin (HY-17393) in a mouse DLD1 BRCA2-/- colorectal cancer model[1][2].
Combination treatment with RP-2119 (45 mg/kg; p.o.; twice daily; up to 50 days) and Olaparib induces tumor regression in the BRCA2-mutant mouse HBCx-10 breast cancer PDX model, with significantly enhanced efficacy compared to Olaparib monotherapy[2].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Animal Model:SCID-Beige (subcutaneous injection of HCT116 BRCA2-/- cells)[1]
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Dosage:30 mg/kg/45 mg/kg; 150 mg/kg; 300 mg/kg
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Administration:p.o.; QD; throughout the study/p.o.; BID; 24 days
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Result:Produced a superior reduction in tumor volume when combined with olaparib (25 mg/kg p.o.
QD) compared to either agent alone.
Showed a statistically significant difference relative to controls.
Induced 34% tumor growth inhibition (TGI) at 45 mg/kg dose after 24 days of treatment.
Induced 48% TGI at 150 mg/kg dose after 24 days of treatment.
Induced 53% TGI at 300 mg/kg dose after 24 days of treatment.
Was well tolerated with no clinical signs or body weight loss relative to vehicle-treated mice.
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Animal Model:SCID-Beige (subcutaneous injection of DLD1 BRCA2-/- cells)[1]
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Dosage:45 mg/kg
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Administration:p.o.; QD; throughout the study
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Result:Produced a superior reduction in tumor volume when combined with carboplatin (25 mg/kg i.p.
QW) compared to either monotherapy treatment.
Showed a statistically significant difference relative to vehicle plus carboplatin at day 35.
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Animal Model:athymic nude (female, 5-9 weeks old)[2]
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Dosage:45 mg/kg (monotherapy); 45 mg/kg (in combination with olaparib 25 mg/kg)
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Administration:p.o.; BID; up to 50 days
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Result:Induced tumor growth inhibition as monotherapy.
Resulted in tumor regressions and statistically significant improved efficacy compared to olaparib alone when administered in combination with olaparib.
Chemical Information
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CAS No. 2922287-81-6
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Appearance Solid
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Molecular Weight 507.52
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Formula C24H19F2N7O2S
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Color Off-white to yellow
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SMILES
O=C(C1=C(C=C(N=C1)C2=NN(C=C2)C)C3=CC(C(F)F)=NC=C3OC)NC4=NN=C(S4)C#CC5CC5
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
Powder -20°C 3 years 4°C 2 years In solvent -80°C 6 months -20°C 1 month
Solvent & Solubility
In Vitro:
DMSO : 100 mg/mL (197.04 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)
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, 6 months; -20°C, 1 month. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
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, 6 months; -20°C, 1 month. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
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.
Add each solvent one by one: 10% DMSO 40% PEG300 5% Tween-80 45% Saline
Solubility: ≥ 2.5 mg/mL (4.93 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.
Add each solvent one by one: 10% DMSO 90% (20% SBE-β-CD in Saline)
Solubility: ≥ 2.5 mg/mL (4.93 mM); Suspended solution
This protocol yields a suspended solution of ≥ 2.5 mg/mL (saturation unknown). Suspended solution can be used for oral and intraperitoneal injection.
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:
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Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Please enter your animal formula composition:
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%DMSO +
Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
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%+
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+%Tween-80 + +
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%Saline +
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).
Working solution concentration: 0.22 mg/mL
Method for preparing stock solution: mg drug dissolved in μL DMSO. Stock solution concentration: mg/mL.
1. Take μL DMSO stock solution;
2. Add μL .
μL , mix evenly;
3. Then add μL Tween 80, mix evenly;
4. Then add μL
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.
Protocols
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CRISPR-Cas9 HDR knock-in/precise editing
CRISPR-Cas9 HDR knock-in uses a guide RNA to direct Cas9 to a genomic target adjacent to a PAM, where Cas9 creates a double-strand break; if a donor DNA template with homology to the cut region is present, cellular HDR can copy the donor sequence into the genome, producing a precise substitution, tag, reporter, or insertion rather than an indel. The readout is the fraction of alleles or cells carrying the intended donor-derived edit, measured by junction PCR, restriction-fragment analysis, Sanger sequencing, amplicon deep sequencing, flow cytometry for reporter knock-in, or clone genotyping; NHEJ indels and partial or non-HDR insertions are measured in parallel because they compete with or confound precise HDR outcomes.
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Cell Cytotoxicity Assay
Cytotoxicity assays are usually based on the assessment of cell membrane damage, which can also be indirectly detected by measuring cell viability. Detection methods include MTT assay, CKK-8 assay, LDH assay and ATP assay, etc.
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Patient-Derived Xenograft (PDX)
Patient-derived xenograft (PDX) models are generated by engrafting primary human tumor tissue directly into immunodeficient mice, allowing in vivo propagation of patient tumor biology without initial in vitro adaptation. These models are used to preserve key histopathological and molecular characteristics of the original tumor and enable assessment of tumor growth dynamics and therapeutic response in a living organism. The biological readout is tumor engraftment and subsequent growth in the murine host, which reflects the ability of human tumor cells to survive, vascularize, and expand in an immunocompromised microenvironment.
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Splenic/Portal-Vein Liver Metastasis Xenograft
Splenic and portal-vein liver metastasis xenograft models deliver tumor cells into the portal circulation so that cells reach the liver first and form hepatic metastatic lesions; splenic injection uses the spleen as an access route to the portal system, while direct portal-vein injection introduces cells into the portal vein without requiring splenectomy. The assay detects liver colonization, intrahepatic tumor growth, tumor distribution, treatment response, survival, and liver-metastasis microenvironment changes; readouts include bioluminescence or fluorescence imaging, gross liver nodule counts, liver weight or tumor burden, histology, and survival.
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Subcutaneous Cell-Line-Derived Xenograft
Subcutaneous cell-line-derived xenograft (CDX) models are established by implanting cultured human cancer cell lines into immunodeficient mice, where the injected cells form localized tumors that can be monitored in vivo as a measure of tumorigenic potential, growth kinetics, and treatment response. These models are widely used in oncology research because they allow reproducible tumor formation and enable comparative assessment of tumor growth between different cell lines or genetic manipulations in a controlled in vivo microenvironment. Subcutaneous implantation of cancer cells in immunodeficient mice is a standard approach for evaluating tumor growth behavior and therapeutic response across multiple cancer types, including prostate, esophageal, pancreatic, and colon cancer models.
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Orthotopic Cell-Line Xenograft
Orthotopic cell-line xenograft models involve implantation of human cancer cell lines into the anatomically corresponding organ of immunodeficient mice to reproduce tumor growth within a native microenvironment, enabling more clinically relevant tumor behavior compared with subcutaneous models. These models are widely used because orthotopic placement better recapitulates tumor progression, including invasion and metastatic spread, which are often underrepresented in heterotopic implantation systems. Compared with conventional xenografts, orthotopic implantation is described as more technically complex but provides improved simulation of tumor-microenvironment interactions and metastatic behavior, making it particularly valuable for translational oncology research. Surgical orthotopic implantation approaches have been emphasized as enabling faithful reproduction of clinical cancer features, including metastasis and disease progression patterns that align with the tumor’s organ of origi
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Cell Viability Determination by MTT Colorimetric Assay
The following protocol uses the MTT colorimetric assay as a classic literature-established method for assessing cell viability/metabolic activity in cultured mammalian cells. MTT[3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide] is reduced by metabolically active cells to a colored formazan product; the amount of formazan is quantified spectrophotometrically and provides an indirect measure of metabolically active viable cells. Importantly, MTT reduction reflects cellular oxidoreductase/metabolic activity rather than an absolute direct count of living cells, so changes in cellular metabolism can alter the signal independently of cell number.
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Intraperitoneal/Peritoneal Dissemination Xenograft
Intraperitoneal (IP) or peritoneal dissemination xenograft models are based on the introduction of human cancer cells into the peritoneal cavity of immunodeficient mice, where they attach to peritoneal surfaces, form multicellular aggregates or spheroids, and progressively generate disseminated tumor nodules that mimic advanced peritoneal metastatic disease. These models are widely used to study ovarian cancer progression, tumor-microenvironment interactions, and intraperitoneal therapeutic responses, often incorporating bioluminescence or fluorescence imaging to longitudinally monitor tumor burden in vivo. The biological principle relies on the capacity of tumor cells such as SKOV3 or related ovarian carcinoma lines to survive in suspension, aggregate within ascites-like fluid, adhere to mesothelial surfaces, and invade peritoneal organs, thereby recapitulating human peritoneal carcinomatosis patterns observed in advanced disease.
Purity & Documentation
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Data Sheet (281 KB)
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SDS (254 KB)
- English - EN (254 KB)
- Français - FR (254 KB)
- Deutsch - DE (254 KB)
- Norwegian - NO (254 KB)
- Español - ES (254 KB)
- Swedish - SV (254 KB)
- Italian - IT (254 KB)
- Korean - KR (254 KB)
- Portuguese - PT (254 KB)
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Handling Instructions (2659 KB)
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, 6 months; -20°C, 1 month. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
| Optional Solvent | Concentration Solvent Mass | 1 mg | 5 mg | 10 mg | 25 mg |
|---|---|---|---|---|---|
| DMSO | 1 mM | 1.9704 mL | 9.8518 mL | 19.7037 mL | 49.2591 mL |
| 5 mM | 0.3941 mL | 1.9704 mL | 3.9407 mL | 9.8518 mL | |
| 10 mM | 0.1970 mL | 0.9852 mL | 1.9704 mL | 4.9259 mL | |
| 15 mM | 0.1314 mL | 0.6568 mL | 1.3136 mL | 3.2839 mL | |
| 20 mM | 0.0985 mL | 0.4926 mL | 0.9852 mL | 2.4630 mL | |
| 25 mM | 0.0788 mL | 0.3941 mL | 0.7881 mL | 1.9704 mL | |
| 30 mM | 0.0657 mL | 0.3284 mL | 0.6568 mL | 1.6420 mL | |
| 40 mM | 0.0493 mL | 0.2463 mL | 0.4926 mL | 1.2315 mL | |
| 50 mM | 0.0394 mL | 0.1970 mL | 0.3941 mL | 0.9852 mL | |
| 60 mM | 0.0328 mL | 0.1642 mL | 0.3284 mL | 0.8210 mL | |
| 80 mM | 0.0246 mL | 0.1231 mL | 0.2463 mL | 0.6157 mL | |
| 100 mM | 0.0197 mL | 0.0985 mL | 0.1970 mL | 0.4926 mL |
RP-2119 Related Classifications
HY-158346 Related Classifications
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