B2292
O6-Benzylguanine
≥98% (TLC), solid, O⁶-alkylguanine DNA alkyltransferase inhiitor
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About This Item
Empirical Formula (Hill Notation):
C12H11N5O
CAS Number:
Molecular Weight:
241.25
UNSPSC Code:
12352200
PubChem Substance ID:
NACRES:
NA.77
MDL number:
Product Name
O6-Benzylguanine, ≥98% (TLC), solid
SMILES string
Nc1nc(OCc2ccccc2)c3nc[nH]c3n1
InChI
1S/C12H11N5O/c13-12-16-10-9(14-7-15-10)11(17-12)18-6-8-4-2-1-3-5-8/h1-5,7H,6H2,(H3,13,14,15,16,17)
InChI key
KRWMERLEINMZFT-UHFFFAOYSA-N
assay
≥98% (TLC)
form
solid
solubility
methanol: 20 mg/mL
storage temp.
room temp
Quality Level
Gene Information
human ... MGMT(4255)
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Application
O6-Benzylguanine has been used:
- as an inhibitor of methylguanine methyltransferase (MGMT) in glioblastoma stem cell
- as a O6-alkylguanine-alkyltransferase (AGT) enzyme inhibitor in embryonic stem cells prior to N-ethyl-N-nitrosourea(ENU) treatment
- as an inhibitor of AGT in growth inhibition assays of HL-60 human promyelocytic leukemia cells
Biochem/physiol Actions
O(6)-benzylguanine is an antineoplastic agent that binds the DNA repair enzyme O(6)-alkylguanine DNA alkyltransferase (AGT), resulting in inhibition of AGT-mediated DNA repair. It is widely used in various DNA repair mechanism studies and potentiates the effects of other chemotherapeutic agents that damage DNA.
O6-Benzylguanine (O6BG) inhibits methylguanine methyltransferase (MGMT) by blocking the active site through benzyl group transfer. The use of O6BG with bis-chloroethylnitrosourea (BCNU) or carmustine is effective in treating solid tumors including lymphomas, melanomas and sarcoma.
signalword
Warning
Storage Class
11 - Combustible Solids
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
dust mask type N95 (US), Eyeshields, Gloves
hcodes
Hazard Classifications
Acute Tox. 4 Oral
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Andre Larochelle et al.
The Journal of clinical investigation, 119(7), 1952-1963 (2009-06-11)
Major limitations to gene therapy using HSCs are low gene transfer efficiency and the inability of most therapeutic genes to confer a selective advantage on the gene-corrected cells. One approach to enrich for gene-modified cells in vivo is to include
Quantitative relationship between guanine O6-alkyl lesions produced by Onrigin? and tumor resistance by O6-alkylguanine-DNA alkyltransferase
Ishiguro K, et al.
Biochemical Pharmacology, 80(9), 1317-1325 (2010)
Antonio S J Lee et al.
Stem cells (Dayton, Ohio), 27(5), 1098-1108 (2009-05-06)
Cell replacement therapy using stem cell transplantation holds much promise in the field of regenerative medicine. In the area of hematopoietic stem cell transplantation, O(6)-methylguanine-DNA methyltransferase MGMT (P140K) gene-mediated drug resistance-based in vivo enrichment strategy of donor stem cells has
M E Dolan et al.
Clinical cancer research : an official journal of the American Association for Cancer Research, 3(6), 837-847 (1997-06-01)
The presence of the DNA repair protein, O6-alkylguanine-DNA alkyltransferase (AGT) in tumor cells is a significant source of resistance to chemotherapeutic alkylnitrosoureas and alkyltriazenes. O6-Benzylguanine provides a means to effectively inactivate the AGT protein and increase the chemotherapeutic effectiveness of
Kotaro Makita et al.
International journal of oncology, 54(5), 1864-1874 (2019-03-14)
Malignant melanoma is a highly aggressive skin cancer that is highly resistant to chemotherapy. Adjuvant therapy is administered to patients with melanoma that possess no microscopic metastases or have a high risk of developing microscopic metastases. Methylating agents, including dacarbazine (DTIC)
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