GPNA (L-γ-Glutamyl-p-nitroanilide)

Catalog No.S6670 Batch:S667002

Technical Data

Formula	C₁₁H₁₄ClN₃O₅
Molecular Weight	303.7	CAS No.	67953-08-6
Solubility (25°C)*	In vitro	DMSO	5 mg/mL (16.46 mM)
		Water	Insoluble
		Ethanol	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

GPNA (L-γ-Glutamyl-p-nitroanilide) is a potent and selective inhibitor of the glutamine (Gln) transporter ASCT2(SLC1A5) with Ki of 55 µM.

Targets

ASCT2 ^[1]
(Cell-free assay)

55 μM(Ki)

In vitro

GPNA leads to a significant decrease in endometrial cancer cell growth and spheroid cross-sectional area.^[1]

In vivo

EGFRAS-GPNA (EGFRAS-specific GPNA oligomers) is taken-up by several tissues including the xenograft tumor. Systemic administration of EGFRAS-GPNA induces antitumor effects in HNSCC xenografts, with similar efficacies as the FDA-approved EGFR inhibitors: cetuximab and erlotinib. EGFRAS-GPNA effectively againsts the constitutively active EGFR vIII mutant implicated in cetuximab resistance.

Protocol (from reference)

Cell Assay:^{^[1]}	Cell lines Endometrial cancer cell line Concentrations 1 mM Incubation Time 24 h Method Cells (1–2 × 10₅) are cultured for 24 h followed by treatment where stated with vehicle or 1 mm GPNA for 24 h. And then staining for flow cytometric analysis is performed. MTT assays are conducted using 100–250 cells per well in a 96-well plate. Fresh media with vehicle or 1 mm GPNA are applied every two days.

Cell Assay:^{^[1]}

Cell lines
Endometrial cancer cell line
Concentrations
1 mM
Incubation Time
24 h
Method
Cells (1–2 × 10₅) are cultured for 24 h followed by treatment where stated with vehicle or 1 mm GPNA for 24 h. And then staining for flow cytometric analysis is performed. MTT assays are conducted using 100–250 cells per well in a 96-well plate. Fresh media with vehicle or 1 mm GPNA are applied every two days.

References

Selleck's GPNA (L-γ-Glutamyl-p-nitroanilide) has been cited by 5 publications

Lipophagy-mediated cholesterol synthesis inhibition is required for the survival of hepatocellular carcinoma under glutamine deprivation [ Redox Biol, 2023, 63:102732]	PubMed: 37150151
Inhibition of SND1 overcomes chemoresistance in bladder cancer cells by promoting ferroptosis [ Oncol Rep, 2023, 49(1)16]	PubMed: 36453257
Neddylation inhibition induces glutamine uptake and metabolism by targeting CRL3SPOP E3 ligase in cancer cells [ Nat Commun, 2022, 13(1):3034]	PubMed: 35641493
Antagonizing Glutamine Bioavailability Promotes Radiation Sensitivity in Prostate Cancer [ Cancers (Basel), 2022, 14(10)2491]	PubMed: 35626095
Evaluation of Glutaminolysis in T Cells [ Curr Protoc, 2022, 2(9):e540]	PubMed: 36111948

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SHIPPING AND STORAGE
Selleck products are transported at room temperature. If you receive the product at room temperature, please rest assured, the Selleck Quality Inspection Department has conducted experiments to verify that the normal temperature placement of one month will not affect the biological activity of powder products. After collecting, please store the product according to the requirements described in the datasheet. Most Selleck products are stable under the recommended conditions.

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