K2144
Ko143 hydrate
≥98% (HPLC), powder, BCRP inhibitor
Synonym(s):
(3S,6S,12aS)-1,2,3,4,6,7,12,12a-Octahydro-9-methoxy-6-( 2-methylpropyl)-1,4-dioxopyrazino[1′,2′:1,6]pyrido[3,4- b]indole-3-propanoic acid 1,1-dimethylethyl ester hydrate, Ko-143 hydrate
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About This Item
Empirical Formula (Hill Notation):
C26H35N3O5 · xH2O
CAS Number:
Molecular Weight:
469.57 (anhydrous basis)
UNSPSC Code:
12352200
PubChem Substance ID:
NACRES:
NA.77
MDL number:
Product Name
Ko143 hydrate, ≥98% (HPLC)
Quality Level
assay
≥98% (HPLC)
form
powder
color
white to off-white
solubility
DMSO: >10 mg/mL
originator
GlaxoSmithKline
storage temp.
room temp
SMILES string
O.COc1ccc2c3C[C@@H]4N([C@@H](CC(C)C)c3[nH]c2c1)C(=O)[C@H](CCC(=O)OC(C)(C)C)NC4=O
InChI
1S/C26H35N3O5.H2O/c1-14(2)11-20-23-17(16-8-7-15(33-6)12-19(16)27-23)13-21-24(31)28-18(25(32)29(20)21)9-10-22(30)34-26(3,4)5;/h7-8,12,14,18,20-21,27H,9-11,13H2,1-6H3,(H,28,31);1H2/t18-,20-,21-;/m0./s1
InChI key
ZXXZDXPNJJZRDC-PSLBYKFTSA-N
Application
Ko143 hydrate has been used:
- to determine the role of ATP-binding cassette sub-family G member 2 (ABCG2), human embryonic kidney (HEK)-C1 and HEK-ABCG2 in tumor microenvironment
- to inhibit ABCG2 for sphere formation assay
- in calcein-AM efflux inhibition to monitor multidrug resistance protein (MRP)-function in kidney
- for cell viability assay
Biochem/physiol Actions
Ko143 has been used as a positive control inhibitor on functions of BCRP in MCF7 and BCRP over-expressing MCF7/MX100 cell lines using a BCRP prototypical substrate mitoxantrone.
Ko143 has been used as a positive control inhibitor on functions of BCRP in MCF7 and BCRP over-expressing MCF7/MX100 cell lines using a BCRP prototypical substrate mitoxantrone. The ABCG2 transporter breast cancer resistance protein (BCRP) plays an important role in disposition of many drugs and environmental toxins. Ko143 displays > 200-fold selectivity over P-gp and MRP-1 transporters. It increases intracellular drug accumulation and reverse BCRP-mediated multidrug resistance. It blocked topotecan and ABZSO transport in a concentration-dependent manner. Ko143 is reported to be a more specific inhibitor of BCRP than other known inhibitors of BCRP such as fumitremorgin C and GF120918.
Ko143 has been used as a positive control inhibitor on functions of breast cancer resistance protein (BCRP) using a BCRP prototypical substrate mitoxantrone.
Ko143 has been used as a positive control inhibitor on functions of breast cancer resistance protein (BCRP) using a BCRP prototypical substrate mitoxantrone. BCRP, an ABCG2 transporter, plays an important role in disposition of many drugs and environmental toxins. Ko143 displays > 200-fold selectivity over P-gp and MRP-1 transporters and thus is more specific than other known BCRP inhibitors such as fumitremorgin C and GF120918. It increases intracellular drug accumulation and reverses BCRP-mediated multidrug resistance. It blocks topotecan and ABZSO transport in a concentration-dependent manner.
Features and Benefits
This compound is a featured product for ADME Tox research. Click here to discover more featured ADME Tox products. Learn more about bioactive small molecules for other areas of research at sigma.com/discover-bsm.
This compound was developed by GlaxoSmithKline. To browse the list of other pharma-developed compounds and Approved Drugs/Drug Candidates, click here.
Preparation Note
The stability of this product in solution has not been determined. According to various sources this product can be stored in solvent (DMSO) at -80°C for 6 months and -20°C for 1 month.
signalword
Warning
hcodes
Hazard Classifications
Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
target_organs
Respiratory system
Storage Class
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
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Multi-drug resistance ABC transporter inhibition enhances murine ventral prostate stem/progenitor cell differentiation
Samant MD, et al.
Stem Cells and Development, 24(10), 1236-1251 (2015)
Architecture of chimeric spheroids controls drug transport
Curran S, et al.
Cancer Microenvironment, 8(2), 101-109 (2015)
Jae Guen Song et al.
Cancer chemotherapy and pharmacology, 78(4), 735-744 (2016-08-16)
The present study aimed to discover a new potent BCRP inhibitor overcoming multidrug resistance. Effects of LW6 on the functional activity and gene expression of two major efflux transporters, BCRP and P-gp, were evaluated by using MDCKII cells overexpressing each