Details of the Drug Combination

General Information of Drug Combination (ID: DC8JB2F)

• Drug Combination Name: Amodiaquine + Chlorzoxazone
• Indication: Chronic myelogenous leukemia; Status: Investigative [1]
• Component Drugs:
  Amodiaquine (DME4RA8): Small molecular drug
  Chlorzoxazone (DMCYVDT): Small molecular drug
• High-throughput Screening Result:
  Testing Cell Line: KBM-7
  Zero Interaction Potency (ZIP) Score: 2.61
  Bliss Independence Score: 2.61
  Loewe Additivity Score: 3.43
  LHighest Single Agent (HSA) Score: 3.43

Molecular Interaction Atlas of This Drug Combination

Indication(s) of Amodiaquine

Disease Entry	ICD 11	Status	REF
Malaria	1F40-1F45	Approved	[2]
Middle East Respiratory Syndrome (MERS)	1D64	Preclinical	[3]
Severe acute respiratory syndrome (SARS)	1D65	Preclinical	[3]

Amodiaquine Interacts with 1 DTT Molecule(s)

DTT Name	DTT ID	UniProt ID	Mode of Action	REF
Histamine N-methyltransferase (HNMT)	TT2B6EV	HNMT_HUMAN	Inhibitor	[5]

Amodiaquine Interacts with 5 DME Molecule(s)

DME Name	DME ID	UniProt ID	Mode of Action	REF
Cytochrome P450 1A1 (CYP1A1)	DE6OQ3W	CP1A1_HUMAN	Metabolism	[6]
Cytochrome P450 2C8 (CYP2C8)	DES5XRU	CP2C8_HUMAN	Metabolism	[7]
Cytochrome P450 1B1 (CYP1B1)	DE9QHP6	CP1B1_HUMAN	Metabolism	[6]
Glutathione S-transferase mu-4 (GSTM4)	DERQ52Z	GSTM4_HUMAN	Metabolism	[8]
Cytochrome P450 102A1 (cyp102)	DE4OGUF	CPXB_BACMB	Metabolism	[9]

Amodiaquine Interacts with 8 DOT Molecule(s)

DOT Name	DOT ID	UniProt ID	Mode of Action	REF
Cytochrome P450 2C19 (CYP2C19)	OTFMJYYE	CP2CJ_HUMAN	Decreases Activity	[10]
Proepiregulin (EREG)	OTRM4NQY	EREG_HUMAN	Increases Expression	[11]
Retinoblastoma-associated protein (RB1)	OTQJUJMZ	RB_HUMAN	Affects Phosphorylation	[12]
Hepatocyte growth factor receptor (MET)	OT7K55MU	MET_HUMAN	Increases Expression	[11]
Cyclin-dependent kinase inhibitor 1 (CDKN1A)	OTQWHCZE	CDN1A_HUMAN	Affects Expression	[12]
Tumor necrosis factor-inducible gene 6 protein (TNFAIP6)	OT1SLUZH	TSG6_HUMAN	Decreases Expression	[11]
Transcription factor E2F1 (E2F1)	OTLKYBBC	E2F1_HUMAN	Affects Expression	[12]
PTB-containing, cubilin and LRP1-interacting protein (PID1)	OT5YJ7FI	PCLI1_HUMAN	Increases Expression	[11]

Indication(s) of Chlorzoxazone

Disease Entry	ICD 11	Status	REF
Acute pain	MG31	Approved	[4]

Chlorzoxazone Interacts with 1 DTT Molecule(s)

DTT Name	DTT ID	UniProt ID	Mode of Action	REF
Calcium-activated potassium channel (KCN)	TTMNI76	NOUNIPROTAC	Activator	[14]

Chlorzoxazone Interacts with 6 DME Molecule(s)

DME Name	DME ID	UniProt ID	Mode of Action	REF
Cytochrome P450 3A4 (CYP3A4)	DE4LYSA	CP3A4_HUMAN	Metabolism	[15]
Cytochrome P450 1A2 (CYP1A2)	DEJGDUW	CP1A2_HUMAN	Metabolism	[16]
Cytochrome P450 2A6 (CYP2A6)	DEJVYAZ	CP2A6_HUMAN	Metabolism	[17]
Cytochrome P450 2D6 (CYP2D6)	DECB0K3	CP2D6_HUMAN	Metabolism	[17]
Cytochrome P450 2E1 (CYP2E1)	DEVDYN7	CP2E1_HUMAN	Metabolism	[18]
Cytochrome P450 102A1 (cyp102)	DE4OGUF	CPXB_BACMB	Metabolism	[19]

Chlorzoxazone Interacts with 2 DOT Molecule(s)

DOT Name	DOT ID	UniProt ID	Mode of Action	REF
Intermediate conductance calcium-activated potassium channel protein 4 (KCNN4)	OTQKQ346	KCNN4_HUMAN	Increases Activity	[20]
Arylamine N-acetyltransferase 2 (NAT2)	OTBPDQOY	ARY2_HUMAN	Affects Metabolism	[13]

References

• [1] CheMBL Affinity Phenotypic Cellular Interaction Assay ID: CHEMBL1125966
• [2] Drug information of Amodiaquine, 2008. eduDrugs.
• [3] Repurposing of clinically developed drugs for treatment of Middle East respiratory syndrome coronavirus infection. Antimicrob Agents Chemother. 2014 Aug;58(8):4885-93.
• [4] URL: http://www.guidetopharmacology.org Nucleic Acids Res. 2015 Oct 12. pii: gkv1037. The IUPHAR/BPS Guide to PHARMACOLOGY in 2016: towards curated quantitative interactions between 1300 protein targets and 6000 ligands. (Ligand id: 2322).
• [5] Effect of amodiaquine, a histamine N-methyltransferase inhibitor, on, Propionibacterium acnes and lipopolysaccharide-induced hepatitis in mice. Eur J Pharmacol. 2007 Mar 8;558(1-3):179-84.
• [6] Amodiaquine clearance and its metabolism to N-desethylamodiaquine is mediated by CYP2C8: a new high affinity and turnover enzyme-specific probe substrate. J Pharmacol Exp Ther. 2002 Feb;300(2):399-407.
• [7] Amodiaquine metabolism is impaired by common polymorphisms in CYP2C8: implications for malaria treatment in Africa. Clin Pharmacol Ther. 2007 Aug;82(2):197-203.
• [8] Human glutathione S-transferases- and NAD(P)H:quinone oxidoreductase 1-catalyzed inactivation of reactive quinoneimines of amodiaquine and N-desethylamodiaquine: possible implications for susceptibility to amodiaquine-induced liver toxicity. Toxicol Lett. 2017 Jun 5;275:83-91.
• [9] The bacterial P450 BM3: a prototype for a biocatalyst with human P450 activities. Trends Biotechnol. 2007 Jul;25(7):289-98.
• [10] Application of higher throughput screening (HTS) inhibition assays to evaluate the interaction of antiparasitic drugs with cytochrome P450s. Drug Metab Dispos. 2001 Jan;29(1):30-5.
• [11] An in vitro coculture system of human peripheral blood mononuclear cells with hepatocellular carcinoma-derived cells for predicting drug-induced liver injury. Arch Toxicol. 2021 Jan;95(1):149-168. doi: 10.1007/s00204-020-02882-4. Epub 2020 Aug 20.
• [12] The antimalarial amodiaquine causes autophagic-lysosomal and proliferative blockade sensitizing human melanoma cells to starvation- and chemotherapy-induced cell death. Autophagy. 2013 Dec;9(12):2087-102. doi: 10.4161/auto.26506. Epub 2013 Oct 8.
• [13] Effects of cigarette smoking and carbon monoxide on chlorzoxazone and caffeine metabolism. Clin Pharmacol Ther. 2003 Nov;74(5):468-74. doi: 10.1016/j.clpt.2003.07.001.
• [14] Chlorzoxazone inhibits contraction of rat thoracic aorta. Eur J Pharmacol. 2006 Sep 18;545(2-3):161-6.
• [15] Summary of information on human CYP enzymes: human P450 metabolism data. Drug Metab Rev. 2002 Feb-May;34(1-2):83-448.
• [16] Inhibitory monoclonal antibodies to human cytochrome P450 1A2: analysis of phenacetin O-deethylation in human liver. Pharmacogenetics. 1998 Oct;8(5):375-82.
• [17] Prediction of human liver microsomal oxidations of 7-ethoxycoumarin and chlorzoxazone with kinetic parameters of recombinant cytochrome P-450 enzymes. Drug Metab Dispos. 1999 Nov;27(11):1274-80.
• [18] Trimethadione metabolism by human liver cytochrome P450: evidence for the involvement of CYP2E1. Xenobiotica. 1998 Nov;28(11):1041-7.
• [19] Wild-type CYP102A1 as a biocatalyst: turnover of drugs usually metabolised by human liver enzymes. J Biol Inorg Chem. 2007 Mar;12(3):313-23.
• [20] Functional and molecular identification of intermediate-conductance Ca(2+)-activated K(+) channels in breast cancer cells: association with cell cycle progression. Am J Physiol Cell Physiol. 2004 Jul;287(1):C125-34. doi: 10.1152/ajpcell.00488.2003. Epub 2004 Feb 25.