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o(6)-benzylguanine and Breast Cancer

o(6)-benzylguanine has been researched along with Breast Cancer in 5 studies

O(6)-benzylguanine: a suicide inhibitor of O(6)-methylguanine-DNA methyltransferase activity

Research Excerpts

ExcerptRelevanceReference
"Novel radiolabeled O(6)-benzylguanine derivatives, 6-O-[(11)C]-[(methoxymethyl)benzyl]guanines ([(11)C]p-O(6)-MMBG, 1a; [(11)C]m-O(6)-MMBG, 1b; ([(11)C]o-O(6)-MMBG, 1c), have been synthesized for evaluation as new potential positron emission tomography (PET) breast cancer imaging agents for DNA repair protein, O(6)-alkylguanine-DNA alkyltransferase (AGT)."7.72Synthesis and preliminary biological evaluation of 6-O-[11C]-[(methoxymethyl)benzyl]guanines, new potential PET breast cancer imaging agents for the DNA repair protein AGT. ( Erickson, LC; Fei, X; Hutchins, GD; Liu, X; Ohannesian, DW; Stone, KL; Wang, JQ; Zheng, QH, 2003)
"MCF-7 human breast cancer cells possess high levels of O6-alkylguanine-DNA alkyltransferase and moderate levels of glutathione, and are more resistant to chloroethylnitrosoureas (CNUs) than cells with low levels of either molecule."7.69Combined depletion of O6-alkylguanine-DNA alkyltransferase and glutathione to modulate nitrosourea resistance in breast cancer. ( Berger, SJ; Donovan, C; Gerson, SL; Varnes, ME, 1994)
"We treated MCF-7 breast cancer cells three times with cytotoxic concentrations of BG + BCNU to isolate a population of MCF-7 cells possessing BG + BCNU resistance (BBR)."5.30Acquired resistance to O6-benzylguanine plus chloroethylnitrosoureas in human breast cancer. ( Gerson, SL; Phillips, WP, 1999)
"Novel radiolabeled O(6)-benzylguanine derivatives, 6-O-[(11)C]-[(methoxymethyl)benzyl]guanines ([(11)C]p-O(6)-MMBG, 1a; [(11)C]m-O(6)-MMBG, 1b; ([(11)C]o-O(6)-MMBG, 1c), have been synthesized for evaluation as new potential positron emission tomography (PET) breast cancer imaging agents for DNA repair protein, O(6)-alkylguanine-DNA alkyltransferase (AGT)."3.72Synthesis and preliminary biological evaluation of 6-O-[11C]-[(methoxymethyl)benzyl]guanines, new potential PET breast cancer imaging agents for the DNA repair protein AGT. ( Erickson, LC; Fei, X; Hutchins, GD; Liu, X; Ohannesian, DW; Stone, KL; Wang, JQ; Zheng, QH, 2003)
"MCF-7 human breast cancer cells possess high levels of O6-alkylguanine-DNA alkyltransferase and moderate levels of glutathione, and are more resistant to chloroethylnitrosoureas (CNUs) than cells with low levels of either molecule."3.69Combined depletion of O6-alkylguanine-DNA alkyltransferase and glutathione to modulate nitrosourea resistance in breast cancer. ( Berger, SJ; Donovan, C; Gerson, SL; Varnes, ME, 1994)
"Early phase evaluation of anticancer drugs has traditionally used toxicity (usually hematological) rather than efficacy end points to establish appropriate dosing schedules."2.69O6-benzylguanine: a clinical trial establishing the biochemical modulatory dose in tumor tissue for alkyltransferase-directed DNA repair. ( Gerson, SL; Haaga, J; Hoppel, CL; Ingalls, ST; Liu, L; Majka, S; Pluda, JM; Spiro, TP; Willson, JK, 1999)
"In tamoxifen-resistant breast cancer cells, BG alone or in combination with antiestrogen (tamoxifen [TAM]/ICI 182,780 [fulvestrant, Faslodex]) therapy enhances p53 upregulated modulator of apoptosis (PUMA) expression, cytochrome C release and poly (ADP-ribose) polymerase (PARP) cleavage, all indicative of apoptosis."1.38MGMT inhibition restores ERα functional sensitivity to antiestrogen therapy. ( Baidas, S; Baker, CH; Bobustuc, GC; Caparas, ML; Constantino, SM; Isley, B; Jeudy, S; Konduri, SD; Limaye, A; Maddipatla, S; Shah, N; Smith, JS; Srivenugopal, KS, 2012)
"We treated MCF-7 breast cancer cells three times with cytotoxic concentrations of BG + BCNU to isolate a population of MCF-7 cells possessing BG + BCNU resistance (BBR)."1.30Acquired resistance to O6-benzylguanine plus chloroethylnitrosoureas in human breast cancer. ( Gerson, SL; Phillips, WP, 1999)

Research

Studies (5)

TimeframeStudies, this research(%)All Research%
pre-19900 (0.00)18.7374
1990's3 (60.00)18.2507
2000's1 (20.00)29.6817
2010's1 (20.00)24.3611
2020's0 (0.00)2.80

Authors

AuthorsStudies
Liu, X1
Zheng, QH1
Fei, X1
Wang, JQ1
Ohannesian, DW1
Erickson, LC1
Stone, KL1
Hutchins, GD1
Bobustuc, GC1
Smith, JS1
Maddipatla, S1
Jeudy, S1
Limaye, A1
Isley, B1
Caparas, ML1
Constantino, SM1
Shah, N1
Baker, CH1
Srivenugopal, KS1
Baidas, S1
Konduri, SD1
Gerson, SL3
Berger, SJ1
Varnes, ME1
Donovan, C1
Spiro, TP1
Liu, L1
Majka, S1
Haaga, J1
Hoppel, CL1
Ingalls, ST1
Pluda, JM1
Willson, JK1
Phillips, WP1

Trials

1 trial available for o(6)-benzylguanine and Breast Cancer

ArticleYear
O6-benzylguanine: a clinical trial establishing the biochemical modulatory dose in tumor tissue for alkyltransferase-directed DNA repair.
    Cancer research, 1999, May-15, Volume: 59, Issue:10

    Topics: Adult; Aged; Antineoplastic Agents, Alkylating; Biopsy; Biotransformation; Breast Neoplasms; Carmust

1999

Other Studies

4 other studies available for o(6)-benzylguanine and Breast Cancer

ArticleYear
Synthesis and preliminary biological evaluation of 6-O-[11C]-[(methoxymethyl)benzyl]guanines, new potential PET breast cancer imaging agents for the DNA repair protein AGT.
    Bioorganic & medicinal chemistry letters, 2003, Feb-24, Volume: 13, Issue:4

    Topics: Breast Neoplasms; Cell Line, Tumor; Enzyme Inhibitors; Guanine; Humans; O(6)-Methylguanine-DNA Methy

2003
MGMT inhibition restores ERα functional sensitivity to antiestrogen therapy.
    Molecular medicine (Cambridge, Mass.), 2012, Sep-07, Volume: 18

    Topics: Animals; Antineoplastic Agents; Apoptosis; Breast Neoplasms; Cell Cycle Checkpoints; Cell Line, Tumo

2012
Combined depletion of O6-alkylguanine-DNA alkyltransferase and glutathione to modulate nitrosourea resistance in breast cancer.
    Biochemical pharmacology, 1994, Aug-03, Volume: 48, Issue:3

    Topics: Breast Neoplasms; Carmustine; Cell Line; Cell Survival; Drug Resistance; Ethylnitrosourea; Glutathio

1994
Acquired resistance to O6-benzylguanine plus chloroethylnitrosoureas in human breast cancer.
    Cancer chemotherapy and pharmacology, 1999, Volume: 44, Issue:4

    Topics: Antineoplastic Agents, Alkylating; Antineoplastic Combined Chemotherapy Protocols; Breast Neoplasms;

1999