Ko 143 Struktur

Ko 143

Bezeichnung:Ko 143

CAS-Nr461054-93-3

Englisch Name:Ko 143

CBNumberCB81562442

SummenformelC26H35N3O5

Molgewicht469.57

MOL-Datei461054-93-3.mol

Ko 143 physikalisch-chemischer Eigenschaften

Schmelzpunkt	147 ºC
Siedepunkt	689.8±55.0 °C(Predicted)
Dichte	1.24
storage temp.	Desiccate at -20°C
Löslichkeit	DMSO: >10mg/mL
Aggregatzustand	powder
pka	13.31±0.60(Predicted)
Farbe	white to off-white
Stabilität	Stable for 2 years from date of purchase as supplied. Protect from exposure to moisture. Solutions in DMSO or ethanol may be stored at -20°C for up to 3 months.

Sicherheit

Kennzeichnung gefährlicher	Xi
R-Sätze:	36/37/38
S-Sätze:	26-36
WGK Germany	3

Gefahreninformationscode (GHS)

Ko 143 Chemische Eigenschaften,Einsatz,Produktion Methoden

Beschreibung
Breast cancer resistance protein (BCRP) is an ATP-binding cassette protein known also as ABCG2. While it normally functions as a high-capacity urate exporter in the renal system, it also acts as a xenobiotic transporter and contributes to multidrug resistance (e.g., to mitoxantrone) in certain types of cancer. BCRP is abundant at the intestinal epithelium and blood-brain barrier, potentially restricting the distribution of certain drugs. Ko 143 is a potent and selective inhibitor of BCRP, preventing the export of mitoxantrone and topotecan in breast cancer cell lines (EC₅₀s = 23 and 26 nM, respectively). It is much less effective at the transporters P-glycoprotein and multidrug resistance-associated protein 1, MRP1. Ko 143 is effective in vivo in mice.
Verwenden
A potent BCRP (breast cancer resistance protein) inhibitor
Verwenden
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
Definition
ChEBI: LSM-6260 is a member of beta-carbolines and a tert-butyl ester.
Biologische Aktivität
Potent and selective breast cancer resistance protein multidrug transporter (BCRP) inhibitor (EC 90 = 26 nM). Displays > 200-fold selectivity over P-gp and MRP-1 transporters. Increases intracellular drug accumulation and reverses BCRP-mediated multidrug resistance.
Biochem/physiol Actions
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.
Lager
Store at -20°C
Einzelnachweise
1) Allen et al. (2002), Potent and specific inhibition of breast cancer resistance protein multidrug transporter in vitro and in mouse intestine by a novel analogue of fumitremorgin C; Mol. Cancer Ther., 1 417 2) Weidner et al. (2015), The Inhibitor Ko143 Is Not Specific for ABCG2; J. Pharmacol. Exp. Ther., 354 384 3) Palasuberniam et al. (2015), ABCG2 transporter inhibitor restores the sensitivity of triple negative breast cancer cells to aminolevulinic acid-mediated photodynamic therapy; Sci. Rep., 5 13298 4) Moreno-Sanz et al. (2011), The ABC membrane transporter ABCG2 prevents access of FAAH inhibitor URB937 to the central nervous system; Pharmacol. Res., 64 359 5) Sabnis et al. (2017),?The Efflux Transporter ABCG2 Maintains Prostate Stem Cells;? Mol. Cancer Res., 15 128

Ko 143 Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

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