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Volumn 17, Issue 8, 2004, Pages 1057-1063

Flanking sequences modulate diepoxide and mustard cross-linking efficiencies at the 5′-GNC site

Author keywords

[No Author keywords available]

Indexed keywords

BUTADIENE DIEPOXIDE; CHLORMETHINE; CYTOTOXIC AGENT; DEOXYGUANOSINE; DIEPOXYOCTANE; DOUBLE STRANDED DNA; EPOXIDE; MUSTARD GAS DERIVATIVE; OLIGOMER; PIPERIDINE; PURINE DERIVATIVE; PYRIMIDINE DERIVATIVE; UNCLASSIFIED DRUG;

EID: 4344708115     PISSN: 0893228X     EISSN: None     Source Type: Journal    
DOI: 10.1021/tx0499057     Document Type: Article
Times cited : (15)

References (48)
  • 1
    • 0001412401 scopus 로고
    • The blood and bone marrow in yellow cross gas (mustard gas) poisoning
    • Krumbhaar, E. B., and Krumbhaar, H. D. (1919) The blood and bone marrow in yellow cross gas (mustard gas) poisoning. J. Med. Res. 40, 497-509.
    • (1919) J. Med. Res. , vol.40 , pp. 497-509
    • Krumbhaar, E.B.1    Krumbhaar, H.D.2
  • 2
    • 0029319660 scopus 로고
    • DNA alkylation and its aftermath
    • Lawley, P. D. (1995) DNA alkylation and its aftermath. BioEssays 17, 561-568.
    • (1995) BioEssays , vol.17 , pp. 561-568
    • Lawley, P.D.1
  • 3
    • 0032943945 scopus 로고    scopus 로고
    • DNA alkylation and interstrand cross-linking by treosulfan
    • Hartley, J. A., O'Hare, C. C., and Baumgart, J. (1999) DNA alkylation and interstrand cross-linking by treosulfan. Br. J. Cancer 79, 264-266.
    • (1999) Br. J. Cancer , vol.79 , pp. 264-266
    • Hartley, J.A.1    O'Hare, C.C.2    Baumgart, J.3
  • 7
    • 0024998978 scopus 로고
    • An update on mortality among workers at a 1,3-butadiene facility
    • Divine, B. J. (1990) An update on mortality among workers at a 1,3-butadiene facility. Environ. Health Perspect. 86, 119-128.
    • (1990) Environ. Health Perspect. , vol.86 , pp. 119-128
    • Divine, B.J.1
  • 8
    • 0025817769 scopus 로고
    • Dangerous and cancer-causing properties of products and chemicals in the oil refining and petrochemical industry- Part II: Carcinogenicity, mutagenicity, and developmental toxicity of 1,3-butadiene
    • Mehlman, M. A., and Legator, M. S. (1991) Dangerous and cancer-causing properties of products and chemicals in the oil refining and petrochemical industry- Part II: carcinogenicity, mutagenicity, and developmental toxicity of 1,3-butadiene. Toxicol. Ind. Health 7, 207-220.
    • (1991) Toxicol. Ind. Health , vol.7 , pp. 207-220
    • Mehlman, M.A.1    Legator, M.S.2
  • 9
    • 0027861146 scopus 로고
    • Cancer mortality among workers at a butadiene production facility
    • (Sorsa, M., Peltonen, K., Vainio, H., and Hemminki, K., Eds.), IARC Scientific Publications No. 127, IARC, Lyon, France
    • Divine, B. J., Wendt, J. K., and Hartman, C. M. (1993) Cancer mortality among workers at a butadiene production facility. In Butadiene and Styrène: Assessment of Health Hazards (Sorsa, M., Peltonen, K., Vainio, H., and Hemminki, K., Eds.) pp 345-362, IARC Scientific Publications No. 127, IARC, Lyon, France.
    • (1993) Butadiene and Styrène: Assessment of Health Hazards , pp. 345-362
    • Divine, B.J.1    Wendt, J.K.2    Hartman, C.M.3
  • 10
    • 0030605083 scopus 로고    scopus 로고
    • Leukemia and cumulative exposure to butadiene, styrene, and benzene among workers in the synthetic rubber industry
    • Macaluso, M., Larson, R., Delzell, E., Sathiakumar, N., Hovinga, M., Julian, J., Muir, D., and Cole, P. (1996) Leukemia and cumulative exposure to butadiene, styrene, and benzene among workers in the synthetic rubber industry. Toxicology 113, 190-202.
    • (1996) Toxicology , vol.113 , pp. 190-202
    • Macaluso, M.1    Larson, R.2    Delzell, E.3    Sathiakumar, N.4    Hovinga, M.5    Julian, J.6    Muir, D.7    Cole, P.8
  • 12
    • 0025180494 scopus 로고
    • Industrial emissions of 1,3-butadiene
    • Mullins, J. A. (1990) Industrial emissions of 1,3-butadiene. Environ. Health Perspect. 86, 9-10.
    • (1990) Environ. Health Perspect. , vol.86 , pp. 9-10
    • Mullins, J.A.1
  • 13
    • 0036133254 scopus 로고    scopus 로고
    • Evaluation of the potential effects of ingredients added to cigarettes. Part 2: Chemical composition of mainstream smoke
    • Rustemeier, K., Stabbert, R., Haussmann, H.-J., Roemer, E., and Carmines, E. L. (2002) Evaluation of the potential effects of ingredients added to cigarettes. Part 2: Chemical composition of mainstream smoke. Food Chem. Toxicol. 40, 93-104.
    • (2002) Food Chem. Toxicol. , vol.40 , pp. 93-104
    • Rustemeier, K.1    Stabbert, R.2    Haussmann, H.-J.3    Roemer, E.4    Carmines, E.L.5
  • 14
    • 1842401744 scopus 로고
    • Molecular and genetic toxicology of 1,3-butadiene
    • Jacobson-Kram, D., and Rosenthal, S. L. (1995) Molecular and genetic toxicology of 1,3-butadiene. Mutat. Res. 339, 121-130.
    • (1995) Mutat. Res. , vol.339 , pp. 121-130
    • Jacobson-Kram, D.1    Rosenthal, S.L.2
  • 15
    • 0020078715 scopus 로고
    • Hepatic microsomal metabolism of 1,3-butadiene
    • Malvoisin, E., and Roberfroid, M. (1982) Hepatic microsomal metabolism of 1,3-butadiene. Xenobiotica 12, 137-144.
    • (1982) Xenobiotica , vol.12 , pp. 137-144
    • Malvoisin, E.1    Roberfroid, M.2
  • 16
    • 0027862680 scopus 로고
    • Species differences in the metabolism of 1,3-butadiene in vivo
    • (Sorsa, M., Peltonen, K., Vainio, H., and Hemminki, K., Eds.), IARC Scientific Publications No. 127, IARC, Lyon, France
    • Henderson, R. F., Bechtold, W. E., Sabourin, P. J., Maples, K. R., and Dahl, A. R. (1993) Species differences in the metabolism of 1,3-butadiene in vivo. In Butadiene and Styrene: Assessment of Health Hazards (Sorsa, M., Peltonen, K., Vainio, H., and Hemminki, K., Eds.) pp 57-64, IARC Scientific Publications No. 127, IARC, Lyon, France.
    • (1993) Butadiene and Styrene: Assessment of Health Hazards , pp. 57-64
    • Henderson, R.F.1    Bechtold, W.E.2    Sabourin, P.J.3    Maples, K.R.4    Dahl, A.R.5
  • 17
    • 0027951237 scopus 로고
    • Mutagenicity of butadiene and its epoxide metabolites: I. Mutagenic potential of 1,2-epoxybutene, 1,2,3,4-diepoxybutane and 3,4-epoxy-1,2-butanediol in cultured human lymphoblasts
    • Cochrane, J. E., and Skopek, T. R. (1994) Mutagenicity of butadiene and its epoxide metabolites: I. Mutagenic potential of 1,2-epoxybutene, 1,2,3,4-diepoxybutane and 3,4-epoxy-1,2-butanediol in cultured human lymphoblasts. Carcinogenesis 15, 713-717.
    • (1994) Carcinogenesis , vol.15 , pp. 713-717
    • Cochrane, J.E.1    Skopek, T.R.2
  • 18
    • 0001253917 scopus 로고
    • The reaction of mono- and di-functional alkylating agents with nucleic acids
    • Brooks, P., and Lawley, P. D. (1961) The reaction of mono- and di-functional alkylating agents with nucleic acids. Biochem. J. 80, 496-503.
    • (1961) Biochem. J. , vol.80 , pp. 496-503
    • Brooks, P.1    Lawley, P.D.2
  • 19
    • 0024355567 scopus 로고
    • Synthesis of a duplex oligonucleotide containing a nitrogen mustard interstrand DNA-DNA cross-link
    • Ojwang, J. O., Grueneberg, D. A., and Loechler, E. L. (1989) Synthesis of a duplex oligonucleotide containing a nitrogen mustard interstrand DNA-DNA cross-link. Cancer Res. 49, 6529-6537.
    • (1989) Cancer Res. , vol.49 , pp. 6529-6537
    • Ojwang, J.O.1    Grueneberg, D.A.2    Loechler, E.L.3
  • 20
    • 0025249224 scopus 로고
    • Mechlorethamine cross-links deoxyguanosine residues at 5′-GNC sequences in duplex DNA fragments
    • Millard, J. T., Raucher, S., and Hopkins, P. B. (1990) Mechlorethamine cross-links deoxyguanosine residues at 5′-GNC sequences in duplex DNA fragments. J. Am. Chem. Soc. 112, 2459-2460.
    • (1990) J. Am. Chem. Soc. , vol.112 , pp. 2459-2460
    • Millard, J.T.1    Raucher, S.2    Hopkins, P.B.3
  • 21
    • 0027159566 scopus 로고
    • Covalent structure of a nitrogen mustard-induced DNA interstrand cross-link: An N7-to-N7 linkage of deoxyguanosine residues at the duplex sequence 5-d(GNC)
    • Rink, S. M., Solomon, M. S., Taylor, M. J., Rajur, S. B., McLaughlin, L. W., and Hopkins, P. B. (1995) Covalent structure of a nitrogen mustard-induced DNA interstrand cross-link: an N7-to-N7 linkage of deoxyguanosine residues at the duplex sequence 5-d(GNC). J. Am. Chem. Soc. 115, 2551-2557.
    • (1995) J. Am. Chem. Soc. , vol.115 , pp. 2551-2557
    • Rink, S.M.1    Solomon, M.S.2    Taylor, M.J.3    Rajur, S.B.4    McLaughlin, L.W.5    Hopkins, P.B.6
  • 22
    • 0027403413 scopus 로고
    • Diepoxybutane cross-links DNA at 5′-GNC sequences
    • Millard, J. T., and White, M. M. (1993) Diepoxybutane cross-links DNA at 5′-GNC sequences. Biochemistry 32, 2120-2124.
    • (1993) Biochemistry , vol.32 , pp. 2120-2124
    • Millard, J.T.1    White, M.M.2
  • 23
    • 0029739515 scopus 로고    scopus 로고
    • 1,2,5,6-Diepoxyhexane and 1,2,7,8-diepoxyoctane cross-link duplex DNA at 5′-GNC sequences
    • Yunes, M. J., Charnecki, S. E., Marden, J. J., and Millard, J. T. (1996) 1,2,5,6-Diepoxyhexane and 1,2,7,8-diepoxyoctane cross-link duplex DNA at 5′-GNC sequences. Chem. Res. Toxicol. 9, 994-1000.
    • (1996) Chem. Res. Toxicol. , vol.9 , pp. 994-1000
    • Yunes, M.J.1    Charnecki, S.E.2    Marden, J.J.3    Millard, J.T.4
  • 24
    • 0029742311 scopus 로고    scopus 로고
    • The 5′-GNC preference for mustard cross-linking is preserved in a restriction fragment
    • Millard, J. T., Luedtke, N. W., and Spencer, R. J. (1996) The 5′-GNC preference for mustard cross-linking is preserved in a restriction fragment. Anti-Cancer Drug Des. 11, 485-492.
    • (1996) Anti-Cancer Drug Des. , vol.11 , pp. 485-492
    • Millard, J.T.1    Luedtke, N.W.2    Spencer, R.J.3
  • 25
    • 0035807064 scopus 로고    scopus 로고
    • Diepoxybutane and diepoxyoctane interstrand cross-linking of the 5S DNA nucleosomal core particle
    • Millard, J. T., and Wilkes, E. E. (2001) Diepoxybutane and diepoxyoctane interstrand cross-linking of the 5S DNA nucleosomal core particle. Biochemistry 40, 10677-10685.
    • (2001) Biochemistry , vol.40 , pp. 10677-10685
    • Millard, J.T.1    Wilkes, E.E.2
  • 26
    • 0026024072 scopus 로고
    • Sequence preferences of DNA interstrand cross-linking agents: Importance of minimal DNA structural reorganization in the cross-linking reactions of mechlorethamine, cisplatin, and mitomycin C
    • Hopkins, P. B., Millard, J. T., Woo, J., Weidner, M. F., Kirchner, J. J., Sigurdsson, S. T., and Raucher, S. (1991) Sequence preferences of DNA interstrand cross-linking agents: importance of minimal DNA structural reorganization in the cross-linking reactions of mechlorethamine, cisplatin, and mitomycin C. Tetrahedron 47, 2475-2489.
    • (1991) Tetrahedron , vol.47 , pp. 2475-2489
    • Hopkins, P.B.1    Millard, J.T.2    Woo, J.3    Weidner, M.F.4    Kirchner, J.J.5    Sigurdsson, S.T.6    Raucher, S.7
  • 27
    • 0002869463 scopus 로고
    • Covalent cross-links and monofunctional adducts of mitomycin C in the minor groove of DNA: Effects on DNA conformation and dynamics
    • (Sarma, and Sarma, Eds.), Adenine Press, Guilderland, NY
    • Chawla, A. K., Lipman, R., and Tomasz, M. (1987) Covalent cross-links and monofunctional adducts of mitomycin C in the minor groove of DNA: Effects on DNA conformation and dynamics. In Structure and Expression, Volume 2: DNA and Its Drug Complexes (Sarma, and Sarma, Eds.) pp 305-316, Adenine Press, Guilderland, NY.
    • (1987) Structure and Expression, Volume 2: DNA and Its Drug Complexes , vol.2 , pp. 305-316
    • Chawla, A.K.1    Lipman, R.2    Tomasz, M.3
  • 28
    • 0024538549 scopus 로고
    • DNA sequence specificity of mitomycin cross-linking
    • Teng, S. P., Woodson, S. A., and Crothers, D. M. (1989) DNA sequence specificity of mitomycin cross-linking. Biochemistry 28, 3901-3907.
    • (1989) Biochemistry , vol.28 , pp. 3901-3907
    • Teng, S.P.1    Woodson, S.A.2    Crothers, D.M.3
  • 29
    • 0024786658 scopus 로고
    • Determination at single-nucleotide resolution of the sequence specificity of DNA interstrand cross-linking agents in DNA fragments
    • Weidner, M. F., Millard, J. T., and Hopkins, P. B. (1989) Determination at single-nucleotide resolution of the sequence specificity of DNA interstrand cross-linking agents in DNA fragments. J. Am. Chem. Soc. 111, 9270-9272.
    • (1989) J. Am. Chem. Soc. , vol.111 , pp. 9270-9272
    • Weidner, M.F.1    Millard, J.T.2    Hopkins, P.B.3
  • 30
    • 0025360932 scopus 로고
    • Recognition between mitomycin C and specific DNA sequences for cross-link formation
    • Borowy-Borowski, H., Lipman, R., and Tomasz, M. (1990) Recognition between mitomycin C and specific DNA sequences for cross-link formation. Biochemistry 29, 2999-3006.
    • (1990) Biochemistry , vol.29 , pp. 2999-3006
    • Borowy-Borowski, H.1    Lipman, R.2    Tomasz, M.3
  • 31
    • 0025039622 scopus 로고
    • Determination of the DNA cross-linking sequence specificity of reductively activated mitomycin C at single-nucleotide resolution: Deoxyguanosine residues at CpG are cross-linked preferentially
    • Millard, J. T., Weidner, M. F., Raucher, S., and Hopkins, P. B. (1990) Determination of the DNA cross-linking sequence specificity of reductively activated mitomycin C at single-nucleotide resolution: deoxyguanosine residues at CpG are cross-linked preferentially. J. Am. Chem. Soc. 112, 3637-3641.
    • (1990) J. Am. Chem. Soc. , vol.112 , pp. 3637-3641
    • Millard, J.T.1    Weidner, M.F.2    Raucher, S.3    Hopkins, P.B.4
  • 33
    • 0018846636 scopus 로고
    • Sequencing end-labeled DNA with base-specific chemical cleavages
    • Maxam, A. M., and Gilbert, W. (1980) Sequencing end-labeled DNA with base-specific chemical cleavages. Methods Enzymol. 65, 499-560.
    • (1980) Methods Enzymol. , vol.65 , pp. 499-560
    • Maxam, A.M.1    Gilbert, W.2
  • 34
    • 0030844864 scopus 로고    scopus 로고
    • Specificity and kinetics of interstrand and intrastrand bifunctional alkylation by nitrogen mustards at a G-G-C sequence
    • Bauer, G. B., and Povirk, L. F. (1997) Specificity and kinetics of interstrand and intrastrand bifunctional alkylation by nitrogen mustards at a G-G-C sequence. Nucleic Acids Res. 25, 1211-1218.
    • (1997) Nucleic Acids Res. , vol.25 , pp. 1211-1218
    • Bauer, G.B.1    Povirk, L.F.2
  • 36
    • 0028329713 scopus 로고
    • Leukemia risk following Hodgkin's disease: Relation to cumulative dose of alkylating agents, treatment with teniposide combinations, number of episodes of chemotherapy, and bone marrow damage
    • van Leeuwen, F. E., Chorus, A. M., van den Belt-Dusebout, A. W., Hagenbeek, A., Noyon, R., van Kerkhoff, E. H., Pinedo, H. M., and Somers, R. (1994) Leukemia risk following Hodgkin's disease: relation to cumulative dose of alkylating agents, treatment with teniposide combinations, number of episodes of chemotherapy, and bone marrow damage. J. Clin. Oncol. 12, 1063-1073.
    • (1994) J. Clin. Oncol. , vol.12 , pp. 1063-1073
    • Van Leeuwen, F.E.1    Chorus, A.M.2    Van Den Belt-Dusebout, A.W.3    Hagenbeek, A.4    Noyon, R.5    Van Kerkhoff, E.H.6    Pinedo, H.M.7    Somers, R.8
  • 37
    • 0030605032 scopus 로고    scopus 로고
    • Species differences in the ovarian toxicity of 1,3-butadiene epoxides in B6C3Fi mice and Sprague-Dawley rats
    • Doerr, J. K., Hollis, E. Á., and Sipes, I. G. (1996) Species differences in the ovarian toxicity of 1,3-butadiene epoxides in B6C3Fi mice and Sprague-Dawley rats. Toxicology 113, 128-136.
    • (1996) Toxicology , vol.113 , pp. 128-136
    • Doerr, J.K.1    Hollis, E.Á.2    Sipes, I.G.3
  • 38
    • 0019195563 scopus 로고
    • Use of an indicator sequence of human DNA to study DNA damage by methylbis(2-chloroethyl)amine
    • Grunber, S. M., and Haseltine, W. A. (1980) Use of an indicator sequence of human DNA to study DNA damage by methylbis(2-chloroethyl)amine. Proc. Natl. Acad. Sci. U.S.A. 77, 6546-6550.
    • (1980) Proc. Natl. Acad. Sci. U.S.A. , vol.77 , pp. 6546-6550
    • Grunber, S.M.1    Haseltine, W.A.2
  • 39
    • 0022616154 scopus 로고
    • DNA sequence selectivity of guanine-N7 alkylation by nitrogen mustards
    • Mattes, W. B., Hartley, J. A., and Kohn, K. W. (1986) DNA sequence selectivity of guanine-N7 alkylation by nitrogen mustards. Nucleic Acids Res. 14, 2971-2987.
    • (1986) Nucleic Acids Res. , vol.14 , pp. 2971-2987
    • Mattes, W.B.1    Hartley, J.A.2    Kohn, K.W.3
  • 40
    • 0022640293 scopus 로고
    • DNA sequence selectivity of guanine-N7 alkylation by three antitumor chloroethylating agents
    • Hartley, J. A., Gibson, N. W., Kohn, K. W., and Mattes, W. B. (1986) DNA sequence selectivity of guanine-N7 alkylation by three antitumor chloroethylating agents. Cancer Res. 46, 1943-1947.
    • (1986) Cancer Res. , vol.46 , pp. 1943-1947
    • Hartley, J.A.1    Gibson, N.W.2    Kohn, K.W.3    Mattes, W.B.4
  • 41
    • 0023663204 scopus 로고
    • Mechanisms of DNA sequence selective alkylation of guanine-N7 positions by nitrogen mustards
    • Kohn, K. W., Hartley, J. W., and Mattes, W. B. (1987) Mechanisms of DNA sequence selective alkylation of guanine-N7 positions by nitrogen mustards. Nucleic Acids Res. 15, 10531-10549.
    • (1987) Nucleic Acids Res. , vol.15 , pp. 10531-10549
    • Kohn, K.W.1    Hartley, J.W.2    Mattes, W.B.3
  • 42
    • 0024805995 scopus 로고
    • Identification of local determinants of DNA interstrand cross-link formation by cyclophosphamide metabolites
    • Hausheer, F. H., Singh, U. C., Saxe, J. D., and Colvin, O. M. (1989) Identification of local determinants of DNA interstrand cross-link formation by cyclophosphamide metabolites. Anti-Cancer Drug Des. 4, 281-294.
    • (1989) Anti-Cancer Drug Des. , vol.4 , pp. 281-294
    • Hausheer, F.H.1    Singh, U.C.2    Saxe, J.D.3    Colvin, O.M.4
  • 43
    • 0028949965 scopus 로고
    • A mechlorethamine-induced DNA interstrand cross-link bends duplex DNA
    • Rink, S. M., and Hopkins, P. B. (1995) A mechlorethamine-induced DNA interstrand cross-link bends duplex DNA. Biochemistry 34, 1439-1445.
    • (1995) Biochemistry , vol.34 , pp. 1439-1445
    • Rink, S.M.1    Hopkins, P.B.2
  • 44
    • 84981879181 scopus 로고
    • Carcinogenic epoxides, lactones, and halo-ethers and their mode of action
    • Van Duuren, B. L. (1969) Carcinogenic epoxides, lactones, and halo-ethers and their mode of action. Ann. N. Y. Acad. Sci. 163, 633-651.
    • (1969) Ann. N. Y. Acad. Sci. , vol.163 , pp. 633-651
    • Van Duuren, B.L.1
  • 45
    • 0027536101 scopus 로고
    • Crystal structure of CATGGCCATG and its implications for A-tract bending models
    • Goodsell, D. S., Kopka, M. L., Cascio, D., and Dickerson, R. E. (1993) Crystal structure of CATGGCCATG and its implications for A-tract bending models. Proc. Natl. Acad. Sci. U.S.A. 90, 2930-2934.
    • (1993) Proc. Natl. Acad. Sci. U.S.A. , vol.90 , pp. 2930-2934
    • Goodsell, D.S.1    Kopka, M.L.2    Cascio, D.3    Dickerson, R.E.4
  • 46
    • 0019598899 scopus 로고
    • Molecular electrostatic potential of the nucleic acids
    • Pullman, A., and Pullman, B. (1981) Molecular electrostatic potential of the nucleic acids. Q. Rev. Biophys. 14, 289-380.
    • (1981) Q. Rev. Biophys. , vol.14 , pp. 289-380
    • Pullman, A.1    Pullman, B.2
  • 47
    • 0033548682 scopus 로고    scopus 로고
    • High base pair opening rates in tracts of GC base pairs
    • Dornberger, U., Leijon, M., and Fritzsche, H. (1999) High base pair opening rates in tracts of GC base pairs. J. Biol. Chem. 274, 6957-6962.
    • (1999) J. Biol. Chem. , vol.274 , pp. 6957-6962
    • Dornberger, U.1    Leijon, M.2    Fritzsche, H.3
  • 48
    • 0026848589 scopus 로고
    • Gene-specific DNA interstrand cross-links produced by nitrogen mustard in the human tumor cell line Colo320HSR
    • Futscher, B. W., Pieper, R. O., Dalton, W. S., and Erickson, L. C. (1992) Gene-specific DNA interstrand cross-links produced by nitrogen mustard in the human tumor cell line Colo320HSR. Cell Growth Differ. 3, 217-223.
    • (1992) Cell Growth Differ. , vol.3 , pp. 217-223
    • Futscher, B.W.1    Pieper, R.O.2    Dalton, W.S.3    Erickson, L.C.4


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