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Pathway Description
Acyclovir Action Pathway (New)
Homo sapiens
Drug Action Pathway
Created: 2022-01-19
Last Updated: 2023-10-25
Acyclovir is a guanosine analog used to treat herpes simplex, varicella zoster, herpes zoster, herpes labialis, and acute herpetic keratitis.
Acyclovir is becomes acyclovir monophosphate due to the action of viral thymidine kinase.5 Acyclovir monophosphate is converted to the diphosphate form by guanylate kinase.1 Acyclovir diphosphate is converted to acyclovir triphosphate by nucleoside diphosphate kinase, pyruvate kinase, creatine kinase, phosphoglycerate kinase, succinyl-CoA synthetase, phosphoenolpyruvate carboxykinase and adenylosuccinate synthetase. Acyclovir triphosphate inhibits the activity of DNA polymerase by competing with its substrate dGTP. Acyclovir triphosphate also gets incorporated into viral DNA, but since it lacks the 3'-OH group which is needed to form the 5′ to 3′ phosphodiester linkage essential for DNA chain elongation, this causes DNA chain termination, preventing the growth of viral DNA. Less Viral DNA is transported into the nucleus, therefore, less viral DNA is integrated into the host DNA. Less viral proteins produced, fewer viruses can form.
References
Acyclovir Pathway (New) References
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Gunness P, Aleksa K, Bend J, Koren G: Acyclovir-induced nephrotoxicity: the role of the acyclovir aldehyde metabolite. Transl Res. 2011 Nov;158(5):290-301. doi: 10.1016/j.trsl.2011.07.002. Epub 2011 Aug 3.
Pubmed: 22005269
Morrel EM, Spruance SL, Goldberg DI: Topical iontophoretic administration of acyclovir for the episodic treatment of herpes labialis: a randomized, double-blind, placebo-controlled, clinic-initiated trial. Clin Infect Dis. 2006 Aug 15;43(4):460-7. doi: 10.1086/505872. Epub 2006 Jul 3.
Pubmed: 16838235
King DH: History, pharmacokinetics, and pharmacology of acyclovir. J Am Acad Dermatol. 1988 Jan;18(1 Pt 2):176-9. doi: 10.1016/s0190-9622(88)70022-5.
Pubmed: 2828440
Miller WH, Miller RL: Phosphorylation of acyclovir diphosphate by cellular enzymes. Biochem Pharmacol. 1982 Dec 1;31(23):3879-84. doi: 10.1016/0006-2952(82)90305-7.
Pubmed: 7159465
Laskin OL: Clinical pharmacokinetics of acyclovir. Clin Pharmacokinet. 1983 May-Jun;8(3):187-201. doi: 10.2165/00003088-198308030-00001.
Pubmed: 6342900
Wishart DS, Feunang YD, Guo AC, Lo EJ, Marcu A, Grant JR, Sajed T, Johnson D, Li C, Sayeeda Z, Assempour N, Iynkkaran I, Liu Y, Maciejewski A, Gale N, Wilson A, Chin L, Cummings R, Le D, Pon A, Knox C, Wilson M: DrugBank 5.0: a major update to the DrugBank database for 2018. Nucleic Acids Res. 2018 Jan 4;46(D1):D1074-D1082. doi: 10.1093/nar/gkx1037.
Pubmed: 29126136
Bradshaw HD Jr, Deininger PL: Human thymidine kinase gene: molecular cloning and nucleotide sequence of a cDNA expressible in mammalian cells. Mol Cell Biol. 1984 Nov;4(11):2316-20. doi: 10.1128/mcb.4.11.2316.
Pubmed: 6549046
Flemington E, Bradshaw HD Jr, Traina-Dorge V, Slagel V, Deininger PL: Sequence, structure and promoter characterization of the human thymidine kinase gene. Gene. 1987;52(2-3):267-77. doi: 10.1016/0378-1119(87)90053-9.
Pubmed: 3301530
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Pubmed: 14702039
Fitzgibbon J, Katsanis N, Wells D, Delhanty J, Vallins W, Hunt DM: Human guanylate kinase (GUK1): cDNA sequence, expression and chromosomal localisation. FEBS Lett. 1996 May 6;385(3):185-8. doi: 10.1016/0014-5793(96)00365-1.
Pubmed: 8647247
Brady WA, Kokoris MS, Fitzgibbon M, Black ME: Cloning, characterization, and modeling of mouse and human guanylate kinases. J Biol Chem. 1996 Jul 12;271(28):16734-40. doi: 10.1074/jbc.271.28.16734.
Pubmed: 8663313
Rosengard AM, Krutzsch HC, Shearn A, Biggs JR, Barker E, Margulies IM, King CR, Liotta LA, Steeg PS: Reduced Nm23/Awd protein in tumour metastasis and aberrant Drosophila development. Nature. 1989 Nov 9;342(6246):177-80. doi: 10.1038/342177a0.
Pubmed: 2509941
Gilles AM, Presecan E, Vonica A, Lascu I: Nucleoside diphosphate kinase from human erythrocytes. Structural characterization of the two polypeptide chains responsible for heterogeneity of the hexameric enzyme. J Biol Chem. 1991 May 15;266(14):8784-9.
Pubmed: 1851158
Wang L, Patel U, Ghosh L, Chen HC, Banerjee S: Mutation in the nm23 gene is associated with metastasis in colorectal cancer. Cancer Res. 1993 Feb 15;53(4):717-20.
Pubmed: 7916650
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