RG 13022

Catalog No.S2115 Batch:S211501

Technical Data

Formula	C₁₆H₁₄N₂O₂
Molecular Weight	266.29	CAS No.	136831-48-6
Solubility (25°C)*	In vitro	DMSO	53 mg/mL (199.03 mM)
		Ethanol	5 mg/mL (18.77 mM)
		Water	Insoluble
* <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

RG 13022 (Tyrphostin RG13022) inhibits the autophosphorylation reaction of the EGF receptor in immunoprecipitates with IC50 of 4 µM.

Targets

EGFR ^[1]
(Cell-free assay)

4 μM

In vitro

RG-13022 inhibits autophosphorylation of the EGF-receptor in HER 14 cells after an overnight incubation.The IC50 of RG-13022 is 5 μM. RG-13022 inhibits colony formation and DNA synthesis by HER 14 cells, which are stimulated by 50 ng/mL EGF, in a dose-dependent manner. The IC50 for RG-13022 is 1 μM for HER 14 colony formation and 3 μM for HER 14 DNA synthesis. RG-13022 also suppresses colony formation and DNA synthesis by EGF-stimulated MH-85 cells in a dose-dependent manner. The IC50 for RG-13022 on MH-85 cells is 7 μM for colony formation and 1.5 μM for DNA synthesis.^[1].

In vivo

RG-13022 (400 μg/mouse/day) significantly inhibits MH-85 tumor growth. Because of slower tumor growth, MH-85 tumor-bearing animals receiving injections of RG-13022 show less cachexia and hypercalcemia, eat more food, and are more active than untreated MH-85 tumor-bearing animals. As a result of suppression of tumor growth, RG-13022 prolongs the life span of MH-85 tumor-bearing animals. Administration of mAb108 i.p. (1 mg/mouse/day) at 1, 5, and 10 days after MH-85 inoculation of RG-13022 (400 μg/mouse/day) for 14 days profoundly inhibits MH-85 growth in nude mice.^[1].

Protocol (from reference)

Cell Assay:^{^[1]}	Cell lines HER14 Cells, MH-85 Cells Concentrations 0-60 μM Incubation Time 10 days Method MH-85 cells (100/well; 24-well plate) and HER 14 cells (200/dish; 10-cm dish) are plated in complete medium, either alpha MEM or DMEM, respectively, supplemented with 10% FCS. After overnight culture, the culture medium is switched to alpha MEM supplemented with 0.2% PCS and 50 ng/mL EGF (MH-85) or DMEM supplemented with 0.5% PCS and 50 ng/mL EGF (HER14). The cells are cultured in this medium in the presence or absence of increasing concentrations of RG-13022 for 10 days. At the end of culture, the cells are fixed with 4% (v/v) formaldehyde in calcium-magnesium-free phosphate-buffered saline for 15 min at room temperature and stained with hematoxylin. Numbers of colonies including more than 20 cells in each well are counted under the microscope.
Animal Study:^{^[1]}	Animal Models 4- to 6-week-old male BALB/c nu/nu mice Dosages 400 μg/mouse/day Administration IV

Cell Assay:^{^[1]}

Cell lines
HER14 Cells, MH-85 Cells
Concentrations
0-60 μM
Incubation Time
10 days
Method
MH-85 cells (100/well; 24-well plate) and HER 14 cells (200/dish; 10-cm dish) are plated in complete medium, either alpha MEM or DMEM, respectively, supplemented with 10% FCS. After overnight culture, the culture medium is switched to alpha MEM supplemented with 0.2% PCS and 50 ng/mL EGF (MH-85) or DMEM supplemented with 0.5% PCS and 50 ng/mL EGF (HER14). The cells are cultured in this medium in the presence or absence of increasing concentrations of RG-13022 for 10 days. At the end of culture, the cells are fixed with 4% (v/v) formaldehyde in calcium-magnesium-free phosphate-buffered saline for 15 min at room temperature and stained with hematoxylin. Numbers of colonies including more than 20 cells in each well are counted under the microscope.

Animal Study:^{^[1]}

Animal Models
4- to 6-week-old male BALB/c nu/nu mice
Dosages
400 μg/mouse/day
Administration
IV

References

[1] Yoneda T, et al. Cancer Res. 1991 15;51(16):4430-5.

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