Details of the Drug Combination

General Information of Drug Combination (ID: DC1CKBJ)

• Drug Combination Name: Loperamide + Entacapone
• Indication: Chronic myelogenous leukemia; Status: Investigative [1]
• Component Drugs:
  Loperamide (DMOJZQ9): Small molecular drug
  Entacapone (DMLBVKQ): Small molecular drug
• High-throughput Screening Result:
  Testing Cell Line: KBM-7
  Zero Interaction Potency (ZIP) Score: 4.5
  Bliss Independence Score: 4.5
  Loewe Additivity Score: 18.26
  LHighest Single Agent (HSA) Score: 18.26

Molecular Interaction Atlas of This Drug Combination

Indication(s) of Loperamide

Disease Entry	ICD 11	Status	REF
Diarrhea	ME05.1	Approved	[2]
Traveler's diarrhea	ME05.1	Approved	[3]
Middle East Respiratory Syndrome (MERS)	1D64	Preclinical	[4]
Severe acute respiratory syndrome (SARS)	1D65	Preclinical	[4]

Loperamide Interacts with 1 DTT Molecule(s)

DTT Name	DTT ID	UniProt ID	Mode of Action	REF
Opioid receptor delta (OPRD1)	TT27RFC	OPRD_HUMAN	Binder	[6]

Loperamide Interacts with 1 DTP Molecule(s)

DTP Name	DTP ID	UniProt ID	Mode of Action	REF
P-glycoprotein 1 (ABCB1)	DTUGYRD	MDR1_HUMAN	Substrate	[7]

Loperamide Interacts with 5 DME Molecule(s)

DME Name	DME ID	UniProt ID	Mode of Action	REF
Cytochrome P450 3A4 (CYP3A4)	DE4LYSA	CP3A4_HUMAN	Metabolism	[8]
Cytochrome P450 2D6 (CYP2D6)	DECB0K3	CP2D6_HUMAN	Metabolism	[9]
Cytochrome P450 2C8 (CYP2C8)	DES5XRU	CP2C8_HUMAN	Metabolism	[9]
Cytochrome P450 2B6 (CYP2B6)	DEPKLMQ	CP2B6_HUMAN	Metabolism	[9]
Oxygen-insensitive NADPH nitroreductase A (nfsA)	DEDPI65	NFSA_ECOLI	Metabolism	[10]

Indication(s) of Entacapone

Disease Entry	ICD 11	Status	REF
Parkinson disease	8A00.0	Approved	[5]

Entacapone Interacts with 1 DTT Molecule(s)

DTT Name	DTT ID	UniProt ID	Mode of Action	REF
Catechol-O-methyl-transferase (COMT)	TTKWFB8	COMT_HUMAN	Inhibitor	[13]

Entacapone Interacts with 2 DTP Molecule(s)

DTP Name	DTP ID	UniProt ID	Mode of Action	REF
Breast cancer resistance protein (ABCG2)	DTI7UX6	ABCG2_HUMAN	Substrate	[14]
Organic anion transporting polypeptide 1B1 (SLCO1B1)	DT3D8F0	SO1B1_HUMAN	Substrate	[15]

Entacapone Interacts with 1 DME Molecule(s)

DME Name	DME ID	UniProt ID	Mode of Action	REF
UDP-glucuronosyltransferase 1A9 (UGT1A9)	DE85D2P	UD19_HUMAN	Metabolism	[12]

Entacapone Interacts with 12 DOT Molecule(s)

DOT Name	DOT ID	UniProt ID	Mode of Action	REF
Glycerol-3-phosphate acyltransferase 1, mitochondrial (GPAM)	OTR1XD9B	GPAT1_HUMAN	Decreases Expression	[16]
Proepiregulin (EREG)	OTRM4NQY	EREG_HUMAN	Increases Expression	[17]
Interleukin-1 alpha (IL1A)	OTPSGILV	IL1A_HUMAN	Increases Expression	[17]
Interleukin-1 beta (IL1B)	OT0DWXXB	IL1B_HUMAN	Increases Expression	[17]
Antileukoproteinase (SLPI)	OTUNFUU8	SLPI_HUMAN	Decreases Expression	[17]
Hepatocyte growth factor receptor (MET)	OT7K55MU	MET_HUMAN	Increases Expression	[17]
Interleukin-8 (CXCL8)	OTS7T5VH	IL8_HUMAN	Increases Expression	[17]
Catechol O-methyltransferase (COMT)	OTPWKTQG	COMT_HUMAN	Decreases Activity	[18]
Prostaglandin G/H synthase 2 (PTGS2)	OT75U9M4	PGH2_HUMAN	Increases Expression	[17]
Tumor necrosis factor-inducible gene 6 protein (TNFAIP6)	OT1SLUZH	TSG6_HUMAN	Decreases Expression	[17]
PTB-containing, cubilin and LRP1-interacting protein (PID1)	OT5YJ7FI	PCLI1_HUMAN	Decreases Expression	[17]
Cystine/glutamate transporter (SLC7A11)	OTKJ6PXW	XCT_HUMAN	Decreases Expression	[17]

References

• [1] Recurrent recessive mutation in deoxyguanosine kinase causes idiopathic noncirrhotic portal hypertension.Hepatology. 2016 Jun;63(6):1977-86. doi: 10.1002/hep.28499. Epub 2016 Mar 31.
• [2] Drugs@FDA. U.S. Food and Drug Administration. U.S. Department of Health & Human Services. 2015
• [3] Loperamide FDA Label
• [4] Screening of an FDA-approved Compound Library Identifies Four Small-Molecule Inhibitors of Middle East Respiratory Syndrome Coronavirus Replication in Cell Culture Antimicrob Agents Chemother. 2014 Aug;58(8):4875-84.
• [5] 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: 6647).
• [6] Loperamide: evidence of interaction with mu and delta opioid receptors. Life Sci. 1983;33 Suppl 1:315-8.
• [7] In vitro P-glycoprotein assays to predict the in vivo interactions of P-glycoprotein with drugs in the central nervous system. Drug Metab Dispos. 2008 Feb;36(2):268-75.
• [8] Loperamide: a pharmacological review. Rev Gastroenterol Disord. 2007;7 Suppl 3:S11-8.
• [9] Identification of cytochrome P450 isoforms involved in the metabolism of loperamide in human liver microsomes. Eur J Clin Pharmacol. 2004 Oct;60(8):575-81.
• [10] Reduction of the prodrug loperamide oxide to its active drug loperamide in the gut of rats, dogs, and humans. Drug Metab Dispos. 1995 Mar;23(3):354-62.
• [11] Two patients with COMT inhibitor-induced hepatic dysfunction and UGT1A9 genetic polymorphism. Neurology. 2005 Dec 13;65(11):1820-2. doi: 10.1212/01.wnl.0000187066.81162.70.
• [12] Kinetic characterization of the 1A subfamily of recombinant human UDP-glucuronosyltransferases. Drug Metab Dispos. 2005 Jul;33(7):1017-26.
• [13] Entacapone: a catechol-O-methyltransferase inhibitor for the adjunctive treatment of Parkinson's disease. Clin Ther. 2001 Jun;23(6):802-32; discussion 771.
• [14] Elucidation of the Impact of P-glycoprotein and Breast Cancer Resistance Protein on the Brain Distribution of Catechol-O-Methyltransferase Inhibitors. Drug Metab Dispos. 2017 Dec;45(12):1282-1291.
• [15] Organic Anion Transporter 2-Mediated Hepatic Uptake Contributes to the Clearance of High-Permeability-Low-Molecular-Weight Acid and Zwitterion Drugs: Evaluation Using 25 Drugs. J Pharmacol Exp Ther. 2018 Nov;367(2):322-334.
• [16] Effect of the Catechol-O-Methyltransferase Inhibitors Tolcapone and Entacapone on Fatty Acid Metabolism in HepaRG Cells. Toxicol Sci. 2018 Aug 1;164(2):477-488.
• [17] 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.
• [18] Beneficial effects of natural phenolics on levodopa methylation and oxidative neurodegeneration. Brain Res. 2013 Feb 25;1497:1-14. doi: 10.1016/j.brainres.2012.11.043. Epub 2012 Dec 1.