Catalog No.S8334

For research use only.

XMU-MP-1 is an inhibitor of MST1/2 with IC50 values of 71.1±12.9 nM and 38.1±6.9 nM against MST1 and MST2, respectively.

XMU-MP-1 Chemical Structure

CAS No. 2061980-01-4

Selleck's XMU-MP-1 has been cited by 31 publications

Purity & Quality Control

Choose Selective MST Inhibitors

Biological Activity

Description XMU-MP-1 is an inhibitor of MST1/2 with IC50 values of 71.1±12.9 nM and 38.1±6.9 nM against MST1 and MST2, respectively.
MST2 [1]
(Cell-free assay)
MST1 [1]
(Cell-free assay)
38.1 nM 71.1 nM
In vitro

XMU-MP-1 blocks MST1/2 kinase activities, thereby activating the downstream effector Yes-associated protein and promoting cell growth. XMU-MP-1 inhibits phosphorylation of MOB1 in a dose-dependent manner. Furthermore, with increasing ATP concentration, XMU-MP-1 exhibits a proportional increase in IC50 against MST1/2, as well as an attenuated inhibition of the MST2-mediated phosphorylation of MOB1. At concentrations ranging from 0.1 to 10 μM, XMU-MP-1 reduces the phosphorylation of endogenous MOB1, LATS1/2, and YAP in human liver carcinoma (HepG2) cells in a dose-dependent manner. Similarly, XMU-MP-1 treatment inhibits hydrogen peroxide (H2O2)-stimulated MOB1 phosphorylation and MST1/2 autophosphorylation in a variety of cell lines, including mouse macrophage-like cells (RAW264.7), human osteosarcoma (U2OS), human colorectal adenocarcinoma (SW480), immortalized human retinal pigment epithelial cells (RPE1), human pleomorphic hepatocellular carcinoma (SNU-423), and HepG2, as well as primary mouse hepatocytes, without affecting the phosphorylation of JNK (c-Jun N-terminal kinase), which is a positive control for H2O2 stimulation. XMU-MP-1 treatment increases YAP nuclear translocation[1].

Methods Test Index PMID
Western blot p-YAP / YAP / p-MST1/2 / MST1 / p-MOB1 / MOB1 29262338
In vivo XMU-MP-1 displays excellent in vivo pharmacokinetics and is able to augment mouse intestinal repair, as well as liver repair and regeneration, in both acute and chronic liver injury mouse models at a dose of 1 to 3 mg/kg via intraperitoneal injection. XMU-MP-1 exhibits favorable pharmacokinetics in rats with a half-life of 1.2 hours and a bioavailability of 39.5%. The maximal phosphorylation inhibition of MOB1 and YAP is achieved between 1.5 and 6 hours after intraperitoneal dosing with XMU-MP-1 (1 mg/kg). XMU-MP-1 protects mice from DSS-induced colitis and ameliorates chronic liver injury[1].

Protocol (from reference)

Cell Research:[1]
  • Cell lines: HepG2
  • Concentrations: 1 μM or 3 μM
  • Incubation Time: 6 h
  • Method: Real-time quantitative polymerase chain reaction (RT-qPCR) analysis of the expression levels of CTGF and CYR61 in HepG2 cells after XMUMP- 1 treatment for 6 hours is conducted.
Animal Research:[1]
  • Animal Models: FRG mice
  • Dosages: 1 mg/kg
  • Administration: i.p.

Solubility (25°C)

In vitro

In vivo

Add solvents to the product individually and in order
(Data is from Selleck tests instead of citations):
2% DMSO+30% PEG 300+2% Tween 80+ddH2O
For best results, use promptly after mixing.


Chemical Information

Molecular Weight 416.48


CAS No. 2061980-01-4
Storage 3 years -20°C powder
2 years -80°C in solvent
Smiles CN1C2=C(C(=O)N(C3=CN=C(N=C31)NC4=CC=C(C=C4)S(=O)(=O)N)C)SC=C2

In vivo Formulation Calculator (Clear solution)

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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.

Molarity Calculator

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Tech Support

Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.

Handling Instructions

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Frequently Asked Questions

Question 1:
Does XMU-MP-1 form a clear solution in - 2% DMSO+30% PEG 300+2% Tween 80+ddH2O, at a concentration of 5 mg/ml? Is this the maximum solubility or is it possible to dissolve more drug to obtain a higher concentration?

XMU-MP-1 in 2% DMSO+30% PEG 300+2% Tween 80+ddH2O at 5mg/ml is a clear solution. It is the maximum concentration. If you want a higher concentration, the content of DMSO and PEG will also be increased

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