Tamoxifen Molecules Structural Archive and Gallery

Identification of Functional Networks of Estrogen- and c-Myc-Responsive Genes and Their Relationship to Response to Tamoxifen Therapy in Breast Cancer

Estrogen is a pivotal regulator of cell proliferation in the normal breast and breast cancer. Endocrine therapies targeting the estrogen receptor are effective in breast cancer, but their success is limited by intrinsic and acquired resistance. With the goal of gaining mechanistic insights into estrogen action and endocrine resistance, we classified estrogen-regulated genes by function, and determined the relationship between functionally-related genesets and the response to tamoxifen in breast cancer patients. Estrogen-responsive genes were identified by transcript profiling of MCF-7 breast cancer cells. Pathway analysis based on functional annotation of these estrogen-regulated genes identified gene signatures with known or predicted roles in cell cycle control, cell growth (i.e. ribosome biogenesis and protein synthesis), cell death/survival signaling and transcriptional regulation. Since inducible expression of c-Myc in antiestrogen-arrested cells can recapitulate many of the effects of estrogen on molecular endpoints related to cell cycle progression, the estrogen-regulated genes that were also targets of c-Myc were identified using cells inducibly expressing c-Myc. Selected genes classified as estrogen and c-Myc targets displayed similar levels of regulation by estrogen and c-Myc and were not estrogen-regulated in the presence of siMyc. Genes regulated by c-Myc accounted for 50% of all acutely estrogen-regulated genes but comprised 85% (110/129 genes) in the cell growth signature. siRNA-mediated inhibition of c-Myc induction impaired estrogen regulation of ribosome biogenesis and protein synthesis, consistent with the prediction that estrogen regulates cell growth principally via c-Myc. The ‘cell cycle’, ‘cell growth’ and ‘cell death’ gene signatures each identified patients with an attenuated response in a cohort of 246 tamoxifen-treated patients. In multivariate analysis the cell death signature was predictive independent of the cell cycle and cell growth signatures. These functionally-based gene signatures can stratify patients treated with tamoxifen into groups with differing outcome, and potentially identify distinct mechanisms of tamoxifen resistance.

Read the article
See beta-sitosterol

68047-06-3 C05011 Hydroxytamoxifen
pdb file: 7313.pdb
sdf file: 7313.sdf

10540-29-1 C07108 Tamoxifen
pdb file: 8963.pdb
sdf file: 8963.sdf

7244-97-5 Ethanamine, 2-(4-(1,2-diphenyl-1-butenyl)phenoxy)-N,N-dimethyl-, (Z)-, 2-hydroxy-1,2,3-propanetricarboxylate Ethylamine, 2-(p-(1,2-diphenyl-1-butenyl)phenoxy)-N,N-dimethyl-, citrate (Z)- I.C.I. 46474 citrate N,N-Dimethyl-2-(p-(1,2-diphenyl-1-butenyl)phenoxy)ethylamine citrate TAMOXIFEN CITRATE (1:X)
pdb file: 166235.pdb
sdf file: 166235.sdf

(Z)-2-(4-(1,2-Diphenyl-1-butenyl)phenoxy)-N,N-dimethylethanamine (Z)-2-(para-(1,2-Diphenyl-1-butenyl)phenoxy)-N,N-dimethylamine (IUPAC) 1-p-beta-Dimethylaminoethoxyphenyl-trans-1,2-diphenylbut-1-ene 1-para-beta-Dimethylaminoethoxyphenyl-trans-1,2-diphenylbut-1-ene 10540-29-1 54965-24-1 CCRIS 3275 Citofen Crisafeno Diemon EINECS 234-118-0 Ethanamine, 2-(4-(1,2-diphenyl-1-butenyl)phenoxy)-N,N-dimethyl-, (Z)- Ethylamine, N,N-dimethyl-2-(p-(1,2-diphenyl-1-butenyl)phenoxy)-, (Z)- HSDB 6782 ICI 47699 Istubol NSC 180973 Nolvadex Oncomox Retaxim TAMOXIFEN Tamizam Tamoxen Tamoxifen (Z) Tamoxifen and its salts Tamoxifene [INN-French] Tamoxifeno [INN-Spanish] Tamoxifenum [INN-Latin] Valodex trans-Tamoxifen
pdb file: 168097.pdb
sdf file: 168097.sdf

(E)-TAMOXIFEN 13002-65-8 BRN 2062021 Ethanamine, 2-(4-(1,2-diphenyl-1-butenyl)phenoxy)-N,N-dimethyl-, (E)- Ethylamine, N,N-dimethyl-2-(p-(1,2-diphenyl-1-butenyl)phenoxy)-, (E)- Tamoxifen (E) cis-Tamoxifen
pdb file: 168369.pdb
sdf file: 168369.sdf

31750-48-8 Desmethyltamoxifen ETHYLAMINE, 2-(p-(1,2-DIPHENYL-1-BUTENYL)PHENOXY)-N-METHYL-, (Z)- Ethanamine, 2-(4-(1,2-diphenyl-1-butenyl)phenoxy)-N-methyl-, (Z)- (9CI) ICI 55,548 N-Desmethyltamoxifen cis-2-(p-(1,2-Diphenyl-1-butenyl)phenoxy)-N-methylethylamine
pdb file: 177490.pdb
sdf file: 177490.sdf

(Z)-(2-(4-(1,2-Diphenylbut-1-enyl)phenoxy)ethyl)dimethylammonium dihydrogen 2-hydroxypropane-1,2,3-tricarboxylate (Z)-2-(p-(1,2-Diphenyl-1-butenyl)phenoxy)-N,N-dimethylethylamine citrate (1:1) 10540-29-1 54965-24-1 Apo-Tamox CCRIS 6718 EINECS 259-415-2 Emblon Ethanamine, 2-(4-(1,2-diphenyl-1-butenyl)phenoxy)-N,N-dimethyl, (Z)-, 2-hydroxy-1,2,3-propanetricarboxylate (1:1) Farmifeno Genox Ginarsan ICI 46,474 ICI 46474 Jenoxifen Kessar Ledertam NSC 180973 Nolgen Noltam Nolvadex Nourytan Noxitem Oncotam Soltamox TAMOXIFEN CITRATE (1:1) TMX Tafoxen Tamax Tamofen Tamoplex Tamox-Puren Tamoxasta Tamoxifen citrate Tamoxifen citrate [USAN:JAN] Taxus Terimon Z-Tamoxifen citrate Zemide Zitazonium Zynoplex trans-1-(p-beta-Dimethylaminoethoxyphenyl)-1,2-diphenylbut-1-ene citrate
pdb file: 182028.pdb
sdf file: 182028.sdf

(E)-TAMOXIFEN CITRATE 76487-65-5 Ethanamine, 2-(4-(1,2-diphenyl-1-butenyl)phenoxy)-N,N-dimethyl-, (E)-, 2-hydroxy-1,2,3-propanetricarboxylate (1:1) Ethanamine, 2-(4-(1,2-diphenyl-1-butenyl)phenoxy)-N,N-dimethyl-, citrate, (E)- Ethylamine, 2-(p-(1,2-diphenyl-1-butenyl)phenoxy)-N,N-dimethyl-, citrate, (E)- trans-2-(p-(1,2-Diphenyl-1-butenyl)phenoxy)-N,N-dimethylethylamine citrate
pdb file: 191328.pdb
sdf file: 191328.sdf

(E)-(2-(4-(1-(3-Hydroxyphenyl)-2-phenylbut-1-enyl)phenoxy)ethyl)dimethylammonium dihydrogen 2-hydroxypropane-1,2,3-tricarboxylate (E)-1-(4'-(2-Dimethylaminoethoxy)phenyl)-1-(3-hydroxyphenyl)-2-phenylbut-1-ene citrate (E)-alpha-(p-(2-(Dimethylamino)ethoxy)phenyl)-alpha'-ethyl-3-stilbenol citrate (1:1) (salt) (E)-alpha-(para-(2-(Dimethylamino)ethoxy)phenyl)-alpha'-ethyl-3-stilbenol citrate (IUPAC) 3-Hydroxytamoxifen citrate 97752-20-0 DROLOXIFENE CITRATE Droloxifene citrate [USAN] EINECS 307-782-5 Phenol, 3-(1-(4-(2-(dimethylamino)ethoxy)phenyl)-2-phenyl-1-butenyl)-, (E)-, 2-hydroxy-1,2,3-propanetricarboxylate (1:1) (salt) trans-1-(4-beta-Dimethylaminoethoxyphenyl)-1-(3-hydroxyphenyl)-2-phenylbut-1-ene citrate
pdb file: 194402.pdb
sdf file: 194402.sdf

(E)-1-(4'-(2-Dimethylaminoethoxy)phenyl)-1-(3'-hydroxyphenyl)-2-phenylbut-1-ene (E)-3-(1-(4-(2-(Dimethylamino)ethoxy)phenyl)-2-phenyl-1-butenyl)phenol (E)-alpha-(p-(2-(Dimethylamino)ethoxy)phenyl)-alpha'-ethyl-3-stilbenol (E)-alpha-(para-(2-(Dimethylamino)ethoxy)phenyl)-alpha'-ethyl-3-stilbenol (IUPAC) 3-HYDROXYTAMOXIFEN 82413-20-5 Droloxifene Droloxifene [USAN:INN] Droloxifeno [Spanish] Droloxifenum [Latin] E-Droloxifene K 060 K 060E K 21060E Phenol, 3-(1-(4-(2-(dimethylamino)ethoxy)phenyl)-2-phenyl-1-butenyl)-, (E)- trans-1-(4-beta-Dimethylaminoethoxyphenyl)-1-(3-hydroxyphenyl)-2-phenylbut-1-ene
pdb file: 199578.pdb
sdf file: 199578.sdf

(Z)-(4-(1,2-Diphenyl-1-butenyl)phenoxy)acetic acid 4-(1,2-Diphenyl-1-butenyl)phenoxyacetic acid 97818-93-4 Acetic acid, (4-(1,2-diphenyl-1-butenyl)phenoxy)-, (Z)- Tamoxifen acid
pdb file: 205246.pdb
sdf file: 205246.sdf

79642-44-7 Aziridine, 1-(2-(4-(1,2-diphenyl-1-butenyl)phenoxy)ethyl)-, (Z)- Tamoxifen aziridine
pdb file: 205247.pdb
sdf file: 205247.sdf

1,1-Bhpe 1,1-Bis(4-hydroxyphenyl)-2-phenylbut-1-ene 91221-46-4 Phenol, 4,4'-(2-phenyl-1-butenylidene)bis- Tamoxifen bis-phenol
pdb file: 205248.pdb
sdf file: 205248.sdf

75504-34-6 Ethanamine, 2-(4-(1,2-diphenyl-1-butenyl)phenoxy)-N,N-dimethyl-, N-oxide, (Z)- Tamoxifen N-oxide Tamoxifen epoxide
pdb file: 205249.pdb
sdf file: 205249.sdf

(E)-1-(4-(2-Dimethylaminoethoxy)phenyl)-1,2-diphenyl-1,2-dioxobutane (Z)-2-(4-(1,2-Oxodiphenyl-1-butane)phenoxy)-N,N-dimethylethanamine 92137-93-4 Ethanamine, 2-(4-(3-ethyl-2,3-diphenyloxiranyl)phenoxy)-N,N-dimethyl-, cis- Tamoxifen epoxide cis-2-(4-(3-Ethyl-2,3-diphenyloxiranyl)phenoxy)-N,N-dimethylethanamine
pdb file: 205250.pdb
sdf file: 205250.sdf

4-Hydroxy-tamoxifen 4-Hydroxytamoxifen 4-Monohydroxytamoxifen 68392-35-8 Ici 79280 Phenol, 4-(1-(4-(2-(dimethylamino)ethoxy)phenyl)-2-phenyl-1-butenyl)-, Tamoxifen metabolite B para-Hydroxytamoxifen
pdb file: 205251.pdb
sdf file: 205251.sdf

1,2-Diphenyl-1-(4-hydroxyphenyl)but-1-ene 1-(4-Hydroxyphenyl)-1,2-diphenyl-1-butene 1-Hpdpb 4-(1,2-Diphenyl-1-butenyl)phenol 68684-63-9 ICI 77949 Phenol, 4-(1,2-diphenyl-1-butenyl)- Tamoxifen metabolite E
pdb file: 205252.pdb
sdf file: 205252.sdf

77207-49-9 Deamino-hydroxytamoxifen Ethanol, 2-(4-(1,2-diphenyl-1-butenyl)phenoxy)-, (Z)- ICI-142269 Ici 142269 Tamoxifen metabolite Y Tamoxifen-ol
pdb file: 205253.pdb
sdf file: 205253.sdf

(Z)-2-(4-(1,2-Diphenyl-1-butenyl)phenoxy)-N,N,N-trimethylethanaminium iodide 107256-99-5 Ethanaminium, 2-(4-(1,2-diphenyl-1-butenyl)phenoxy)-N,N,N-trimethyl-, iodide, (Z)- Tamoxifen methiodide
pdb file: 205254.pdb
sdf file: 205254.sdf

102203-05-4 Tamoxifen N-oxide 1,2-epoxide
pdb file: 205255.pdb
sdf file: 205255.sdf

104691-77-2 Carbamic acid, (2-chloroethyl)nitroso-, 2-(4-(1,2-diphenyl-1-butenyl)phenoxy)ethyl ester, (Z)- N-(2-Chloroethyl)-N-nitroso-2-(4-(1,2-diphenylbutenyl)phenoxy)ethyl carbamate N-Nitroso-dbpe-carbamate Tamoxifen nitrosocarbamate
pdb file: 205256.pdb
sdf file: 205256.sdf

104691-78-3 N-(2-Chloroethyl)-N'-2-(4-(1,2-diphenylbutenyl)phenoxy)ethyl-N-nitrosourea N-Chloroethyl-dbpe-nitrosourea Tamoxifen nitrosourea Urea, N-(2-chloroethyl)-N'-(2-(4-(1,2-diphenyl-1-butenyl)phenoxy)ethyl)-N-nitroso-, (Z)-
pdb file: 205257.pdb
sdf file: 205257.sdf

(E)-1-(2-(4-(1-(4-Iodophenyl)-2-phenyl-1-butenyl)phenoxy)ethyl)pyrrolidine 116057-75-1 CB 7432 Idoxifene Idoxifene [USAN:BAN:INN] Iodoxifene Pyrrolidine, 1-(2-(4-(1-(4-iodophenyl)-2-phenyl-1-butenyl)phenoxy)ethyl)-, (E)- Pyrrolidino-4-iodotamoxifen SB 223030
pdb file: 213559.pdb
sdf file: 213559.sdf

54965-24-1 Ethanamine, 2-[4-(1,2-diphenyl-1-butenyl)phenoxy]-N,N-dimethyl-, (Z)-, 2-hydroxy-1,2,3-propane-tricarboxylate (1:1) Ethanamine, 2-[4-(1,2-diphenyl-1-butenyl)phenoxy]-N,N-dimethyl-, (Z)-, 2-hydroxy-1,2,3-propanetricarboxylate (1:1) ICI 46474 citrate NSC180973 Nolvadex TAMOXIFEN TMX Tamoxifen citrate
pdb file: 447264.pdb
sdf file: 447264.sdf

N-Methyltamoxifen iodide NSC630510
pdb file: 495024.pdb
sdf file: 495024.sdf

(Z)-2-[p-(1,2-Diphenyl-1-butenyl)phenoxy]-N,N-dimethylethylamine ,citrate 1-p-.beta.-Dimethylamino-ethoxyphenyl-trans-1,2-diphenylbut-1-ene 54965-24-1 AIDS-008877 AIDS008877 ICI 46474 citrate NSC180973 Nolvadex Tamoxifen Tamoxifen citrate
pdb file: 603532.pdb
sdf file: 603532.sdf