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Apatinib (YN968D1) mesylate VEGFR inhibitor

Cat.No.S2221

Apatinib mesylate (YN968D1, Rivoceranib) is a potent inhibitor of the VEGF signaling pathway with IC50 values of 1 nM, 13 nM, 429 nM and 530 nM for VEGFR-2, Ret (c-Ret), c-Kit and c-Src, respectively. Apatinib mesylate induces both autophagy and apoptosis.
Apatinib (YN968D1) mesylate VEGFR inhibitor Chemical Structure

Chemical Structure

Molecular Weight: 493.58

Quality Control

Chemical Information, Storage & Stability

Molecular Weight 493.58 Formula

C25H27N5O4S

Storage (From the date of receipt)
CAS No. 1218779-75-9 Download SDF Storage of Stock Solutions

Synonyms YN968D1, Rivoceranib Smiles C[S](O)(=O)=O.O=C(NC1=CC=C(C=C1)C2(CCCC2)C#N)C3=CC=CN=C3NCC4=CC=NC=C4

Solubility

In vitro
Batch:

DMSO : 99 mg/mL (200.57 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Water : Insoluble

Ethanol : Insoluble

Molarity Calculator

Mass Concentration Volume Molecular Weight

In vivo
Batch:

In vivo Formulation Calculator (Clear solution)

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Working concentration: mg/ml;

Method for preparing DMSO master liquid: mg drug pre-dissolved in μL DMSO ( Master liquid 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 master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O, mix and clarify.

Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.

Note: 1. Please make sure the liquid is clear before adding the next solvent.
2. Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such
as vortex, ultrasound or hot water bath can be used to aid dissolving.

Mechanism of Action

Features
Good anti-tumor effects for gastric and colorectal cancer compared with NSC-724772 and sunitinib.
Targets/IC50/Ki
VEGFR2 [1]
(Cell-free assay)
1 nM
RET [1]
(Cell-free assay)
13 nM
In vitro

Apatinib (YN968D1) is a novel, orally bioavailable, selective inhibitor with potential antiangiogenic and antineoplastic activities. Apatinib selectively binds to and inhibits VEGFR2. Apatinib can also potently suppress the activities of Ret, c-kit and c-src with IC50 of 0.013 μM, 0.429 μM and 0.53 μM, respectively. Apatinib inhibits cellular phosphorylation of VEGFR-2, c-kit and PDGFRβ. Apatinib significantly inhibits proliferation stimulated by 20 ng/mL VEGF (IC50 = 0.17μM). Apatinib effectively inhibits proliferation, migration and tube formation of human umbilical vein endothelial cells induced by FBS, and blocked the budding of rat aortic ring. [1] Apatinib reverses ABCB1- and ABCG2-mediated MDR by inhibiting their transport function, but not by blocking the AKT or ERK1/2 pathway or downregulating ABCB1 or ABCG2 expression. Apatinib significantly potentiates the cytotoxicity of established ABCB1 and ABCG2 substrates and increased the accumulation of DOX and Rho 123 in ABCB1- or ABCG2-overexpressing cells. Furthermore, apatinib significantly inhibited the photoaffinity labeling of both ABCB1 and ABCG2 with [125I]iodoarylazidoprazosin in a concentration-dependent manner. [2]

Kinase Assay
Enzyme-linked immunosorbent assay
A poly(glu, ala, tyr) 6:3:1 random copolymer is used as a tyrosine containing substrate solution. The substrate is stored as a 1 mg/mL stock in PBS at −20 °C and diluted 1 in 500 with PBS in order to coat 96 well plates (100 μL/well). Plates are coated on the day prior to assay, sealed with adhesive seals, and stored overnight at 4 °C. On the day of the assay, the substrate solution is discarded and the assay plate wells are washed once with PBST (PBS containing 0.05% v/v Tween 20) and once with Hepes buffer (50 mM, pH 7.4).Test compounds are diluted with 10% DMSO de-ionized water and 25 μL volumes transferred to wells in the washed assay plates. Manganese chloride solution (40 mM) containing 8 μM ATP is then added (25 μL) to all test wells. Control and blank wells, containing compound diluent and manganese chloride solution with and without ATP, respectively, are also included to determine the dynamic range of the assay. Freshly diluted enzyme (50 μL) is added to each well, and the plates incubated at room temperature for 20 min. The liquid is then discarded and the wells are washed twice with PBST. Mouse IgG anti-phosphotyrosine antibody diluted 1:6000 with PBST containing 0.5% (w/v) bovine serum albumin (BSA) is added (100 μL/well), and the plates incubated for 1h at room temperature before discarding the liquid and washing the wells twice with PBST. Horseradish peroxidase (HRP)-linked sheep anti-mouse Ig antibody diluted 1:500 with PBST containing 0.5% (w/v) BSA, is then added (100 μL/well) and the plates incubated for a further 1 h at room temperature before discarding the liquid and washing the wells twice with PBST. A 1 mg/mL solution of 2,2‘-azino-bis(3-ethylbenzthiazoline-6-sulfonic acid is freshly prepared in 50 mM phosphate-citrate buffer (pH5.0) containing 0.03% (w/v) sodium perborate, and 100 μL added to each well. Plates are then incubated for 20−60 min at room temperature until the optical density value of control wells measured at 405 nm is approximately 1.0. IC50 values for compound enzyme inhibition are interpolated using Microcal Origin following subtraction of blank values.
In vivo

Apatinib inhibits the growth of a broad range of human tumor xenografts in a significant dose-dependent manner. [1] Apatinib reverses ABCB1-mediated MDR in the nude mouse xenograft model. [2] Apatinib significantly enhances the antitumor activity of doxorubicin in nude mice bearing K562/ADR xenografts. [3]

References

Applications

Methods Biomarkers Images PMID
Western blot p-VEGFR2 / VEGFR2 / p-ERK / ERK PI3K / p-PI3K / mTOR / p-mTOR / AKT / p-AKT Beclin 1 / Atg7 / p62 / LC3-I / LC3-II S2221-WB3 29490645
Growth inhibition assay Cell viability S2221-viability1 29490645

Clinical Trial Information

(data from https://clinicaltrials.gov, updated on 2024-05-22)

NCT Number Recruitment Conditions Sponsor/Collaborators Start Date Phases
NCT05839197 Recruiting
Macrotrabecular Massive Hepatocellular Carcinoma
Wan-Guang Zhang|Tongji Hospital
May 5 2023 Phase 2
NCT05742750 Not yet recruiting
Locally Advanced Biliary Tract Cancer|Metastatic Biliary Tract Cancer
Sun Yat-sen University|Jiangsu Hengrui Pharmaceutical Co. Ltd.
March 1 2023 Phase 1|Phase 2
NCT05287360 Completed
Healthy
Elevar Therapeutics
December 30 2021 Phase 1
NCT03743428 Suspended
Colorectal Neoplasms
Shenzhen People''s Hospital
October 22 2020 Not Applicable
NCT04517357 Unknown status
Relapsed Ovarian Cancer
Jiangsu HengRui Medicine Co. Ltd.
October 16 2020 Phase 2

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Frequently Asked Questions

Question 1:
How to reconstitute it for in vivo studies?

Answer:
We suggest the vehicle 0.5% CMC. In this vehicle, it is not fully dissolved. However, the mixture is a stable suspension and can be used for oral gavage feeding.

Signaling Pathway Map