Thioguanine

Catalog No.S1774 Batch:S177406

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Technical Data

Formula

C5H5N5S
Molecular Weight 167.19 CAS No. 154-42-7
Solubility (25°C)* In vitro DMSO 33 mg/mL (197.38 mM)
Water Insoluble
Ethanol Insoluble
In vivo (Add solvents to the product individually and in order)
Clear solution
2%DMSO 40%PEG300 2%Tween80 56%ddH2O
1.0mg/ml Taking the 1 mL working solution as an example, add 20 μL of 50 mg/ml clarified DMSO stock solution to 400 μL of PEG300, mix evenly to clarify it; add 20 μL of Tween80 to the above system, mix evenly to clarify; then continue to add 560 μL of ddH2O to adjust the volume to 1 mL. The mixed solution should be used immediately for optimal results. 
* <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 Thioguanine, a purine antimetabolite, inhibits DNMT1 activity through ubiquitin-targeted degradation, used in the treatment of acute lymphoblastic leukemia, autoimmune disorders (e.g., Crohn's disease, rheumatoid arthritis) and organ transplant recipients.
Targets
DNMT1 [6]
In vitro

Thioguanine incorporation alters the DNA cleavage induced by topoisomerase II in the presence and absence of etoposide. [1] 6-Thioguanine alters the structure and lowers the thermal stability of duplex DNA, but duplex DNA can be formed in the presence of 6SG. [2] 6-Thioguanine induced apopotosis is similarly observed in both mismatch repair-proficient and -deficient HCT116 and HeLa cells. [3] Thioguanine integrates into DNA and unlike the canonical DNA bases, it is a strong UVA chromophore with an absorbance maximum at 342 nm. 6-Thioguanine is a photosensitizer and a source of reactive oxygen species. [4] In canine lymphoma cells, Thioguanine significantly decreases DNMT1 protein and global DNA methylation. [6]
In vivo

Thioguanine is as efficient as a PARP inhibitor in selectively killing BRCA2-defective tumors in a xenograft model. 6-Thioguanine efficiently kills such BRCA1-defective PARP inhibitor-resistant tumors. 6-Thioguanine could kill cells and tumors that have gained resistance to PARP inhibitors or cisplatin through genetic reversion of the BRCA2 gene. [5]

Protocol (from reference)

Selleck's Thioguanine has been cited by 22 publications

Dual Inhibition of CDK4/6 and XPO1 Induces Senescence With Acquired Vulnerability to CRBN-Based PROTAC Drugs [ Gastroenterology, 2024, S0016-5085(24)00062-3] PubMed: 38262581
Genetic and pharmacological modulation of DNA mismatch repair heterogeneous tumors promotes immune surveillance [ Cancer Cell, 2023, 41(1):196-209.e5] PubMed: 36584674
Proteogenomics refines the molecular classification of chronic lymphocytic leukemia [ Nat Commun, 2022, 13(1):6226] PubMed: 36266272
Proteogenomics refines the molecular classification of chronic lymphocytic leukemia [ Nat Commun, 2022, 13(1):6226] PubMed: 36266272
TP53 R249S mutation in hepatic organoids captures the predisposing cancer risk [ Hepatology, 2022, 10.1002/hep.32802] PubMed: 36221953
Establishment and Characterization of NCC-PMP1-C1: A Novel Patient-Derived Cell Line of Metastatic Pseudomyxoma Peritonei [ J Pers Med, 2022, 12(2)258] PubMed: 35207746
Establishment and characterization of NCC-UPS4-C1: a novel cell line of undifferentiated pleomorphic sarcoma from a patient with Li-Fraumeni syndrome [ Hum Cell, 2022, 10.1007/s13577-022-00671-y] PubMed: 35118583
Large-scale and high-resolution mass spectrometry-based proteomics profiling defines molecular subtypes of esophageal cancer for therapeutic targeting [ Nat Commun, 2021, 12(1):4961] PubMed: 34400640
Combination of the 6-thioguanine and disulfiram/Cu synergistically inhibits proliferation of triple-negative breast cancer cells by enhancing DNA damage and disrupting DNA damage checkpoint [ Biochim Biophys Acta Mol Cell Res, 2021, 1869(2):119169] PubMed: 34763028
Establishment and characterization of NCC-MFS4-C1: a novel patient-derived cell line of myxofibrosarcoma [ Hum Cell, 2021, 34(6):1911-1918] PubMed: 34383271

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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.

NOT FOR HUMAN, VETERINARY DIAGNOSTIC OR THERAPEUTIC USE.