Riviciclib hydrochloride (P276-00)

Catalog No.S8058 Batch:S805801

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Technical Data

Formula

C21H20ClNO5.HCl
Molecular Weight 438.3 CAS No. 920113-03-7
Solubility (25°C)* In vitro DMSO 88 mg/mL (200.77 mM)
Water 88 mg/mL (200.77 mM)
Ethanol 7 mg/mL (15.97 mM)
In vivo (Add solvents to the product individually and in order)
Clear solution
30%propylene glycol 5%Tween80 65%D5W
30.0mg/ml Taking the 1 mL working solution as an example, add 300 μL of 100 mg/ml clarified propylene glycol stock solution to 50 μL of Tween 80, mix evenly to clarify it; then continue to add 650 μL of D5W to adjust the volume to 1 mL. The mixed solution should be used immediately for optimal results. 
* <1 mg/ml means slightly soluble or insoluble.
* 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.
* Room temperature shipping (Stability testing shows this product can be shipped without any cooling measures.)

Preparing Stock Solutions

Biological Activity

Description Riviciclib hydrochloride (P276-00) is a novel CDK1, CDK4 and CDK9 inhibitor with IC50 of 79 nM, 63 nM and 20 nM, respectively. Riviciclib hydrochloride (P276-00) induces apoptosis. Phase 2/3.
Targets
CDK9/CyclinT1 [1] CDK4/CyclinD1 [1] CDK1/CyclinB [1] CDK2/CyclinA [1] CDK6/CyclinD3 [1] View More
20 nM 63 nM 79 nM 224 nM 396 nM
In vitro P276-00 shows 40-fold selectivity toward Cdk4-D1, compared with Cdk2-E[1]. It shows potent antiproliferative effects against various human cancer cell lines, including HCT-116, U2OS, H-460, HL-60, HT-29, SiHa, MCF-7, Colo-205, SW-480, PC-3, Caco2, T-24 with an IC50 ranging from 300 to 800 nmol/L, and is found to be highly selective for cancer cells as compared with normal fibroblast cells[1]. P276-00 can down-regulate cyclin D1 and Cdk4 in an ATP- competitive manner and decrease Cdk4-specific pRb Ser780 phosphorylation. P276-00 also induces apoptosis by actving cellular caspase-3 activity and DNA ladder formation[1].
In vivo P276-00, administered i.p. at 50 mg/kg daily for 20 treatments can significantly induce growth inhibition of murine colon cancer (CA-51). However, in murine lung carcinoma model (Lewis lung), an increased dose of 60 mg/kg (30 mg/kg twice daily) administered every alternate day i.p. for 7 treatments shows significant inhibition in the growth[2]. And it also inhibit the growth of human colon carcinoma HCT-116 xenograft and human non-small cell lung carcinoma H-460 xenograft[2]. Efficacy Studies show its maximum tolerated dose is 78 mg/kg/d[2].

Protocol (from reference)

Kinase Assay:[1]
  • Cdk4-D1/Cdk2-E enzyme assay

    The Cdk4-D1/Cdk2-E enzyme assay is run in 96-well format using Millipore Multiscreen filtration plates. All assay steps are done in a single filter plate. The filtration wells are prewetted with 100 μL of kinase buffer [50 mmol/L HEPES (pH, 7.5), 10 mmol/L MgCl2, 1 mmol/L EGTA], and then the solution is removed by vacuum. With filter plate on vacuum manifold, 50 μL GST-Rb bound to GSH-Sepharose beads in kinase buffer (0.5 μg GST-Rb/50 μL) is added to each well, and vacuum is applied to the filter plate. About 25 μL of a reaction mix containing ATP (cold + hot) and 4× phosphatase inhibitor mix (40 μmol/L unlabeled ATP, 10 μCi/mL γ32P-ATP, 40 mmol/L h-glycerophosphate, 4 mmol/L DTT, 0.4 mmol/L NaF, 0.4 mmol/L sodium orthovanadate) diluted in kinase buffer is added to each well. The test compound (4×final concentration in kinase buffer) or kinase buffer alone (control) is then added in an additional 25 μL volume. To each well, 50 μL (100 ng) of human Cdk4-D1/Cdk2-E enzyme in kinase buffer is added to initiate the reaction, which is allowed to continue for 30 min at 30°C. When the reaction is completed, vacuum is applied again, and the plate is washed with the TNEN buffer [20 mmol/L Tris (pH, 8.0), 100 mmol/L NaCl, 1 mmol/L EDTA, 0.5% nonidet-P40] thrice; the filter plate is air-dried and is placed in a Multiscreen adapter plate. Packard Microscint-O cocktail (30 μL) is added, and the plate is covered with a Top-Seal A film. Quantitation of 32P-GST-Rb in 96-well filter plates is carried out by Top Count scintillation counter. All compounds are tested initially at 1 μmol/L concentration. Compounds showing more than or equal to 50% inhibition are further profiled for IC50 determination.

Cell Assay:[1]
  • Cell lines

    HCT-116, U2OS, H-460, HL-60, HT-29, SiHa, MCF-7, Colo-205, SW-480, PC-3, Caco2, T-24

  • Concentrations

    ~5.0 μM

  • Incubation Time

    48 h

  • Method

    The cells are seeded at a density of 3,000-5,000 cells per well, depending on cell type in 180 μL of culture medium in 96-well plate and incubated overnight to allow the cells to adhere. Varying concentrations of compounds are added to the wells and incubated for 48 h at 37°C. 3H-thymidine (0.25 μCi) is added to each well, and incorporation of the radiolabel is allowed to proceed for 5 to 7 h. Following this incubation, cells are harvested onto GF/B unifilter plates using a Packard Filtermate Universal harvester, and the plates are counted in a Packard Top Count 96-well liquid scintillation counter.

Animal Study:[2]
  • Animal Models

    H-460 xenograft

  • Dosages

    50 mg/kg once daily or 30 mg/kg twice daily

  • Administration

    i.p.

Customer Product Validation

, , Mod Pathol, 2016, 29(6):616-29.

Selleck's Riviciclib hydrochloride (P276-00) has been cited by 6 publications

Polysaccharide from Angelica sinensis attenuates SNP-induced apoptosis in osteoarthritis chondrocytes by inducing autophagy via the ERK1/2 pathway [ Arthritis Res Ther, 2021, 23(1):47] PubMed: 33514407
Key metabolism pathways and regulatory mechanisms of high polysaccharide yielding in Hericium erinaceus [ BMC Genomics, 2021, 22(1):160] PubMed: 33676419
Localized Inhibition of Protein Phosphatase 1 by NUAK1 Promotes Spliceosome Activity and Reveals a MYC-Sensitive Feedback Control of Transcription. [ Mol Cell, 2020, 77(6):1322-1339] PubMed: 32006464
An ATR and CHK1 kinase signaling mechanism that limits origin firing during unperturbed DNA replication. [ Proc Natl Acad Sci U S A, 2019, 116(27):13374-13383] PubMed: 31209037
Overcoming resistance to the THZ series of covalent transcriptional CDK inhibitors [Gao Y, et al. Cell Chem Biol, 2018, 10.1016/j.chembiol.2017.11.007] PubMed: 29276047
Expression profiling of small intestinal neuroendocrine tumors identifies subgroups with clinical relevance, prognostic markers and therapeutic targets [Andersson E, et al. Mod Pathol, 2016, 10.1038/modpathol.2016.48.] PubMed: 26965582

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SHIPPING AND STORAGE
Selleck products are transported at room temperature. If you receive the product at room temperature, please rest assured, the Selleck Quality Inspection Department has conducted experiments to verify that the normal temperature placement of one month will not affect the biological activity of powder products. After collecting, please store the product according to the requirements described in the datasheet. Most Selleck products are stable under the recommended conditions.

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