Details of the Drug Combination

General Information of Drug Combination (ID: DCO5B2W)

• Drug Combination Name: Digitoxin + Ixabepilone
• Indication: Adenocarcinoma; Status: Investigative [1]
• Component Drugs:
  Digitoxin (DMWVIGP): Small molecular drug
  Ixabepilone (DM2OZ3G): Small molecular drug
• High-throughput Screening Result:
  Testing Cell Line: HCT-15
  Zero Interaction Potency (ZIP) Score: 5.82
  Bliss Independence Score: 7.54
  Loewe Additivity Score: 3.98
  LHighest Single Agent (HSA) Score: 7.38

Molecular Interaction Atlas of This Drug Combination

Indication(s) of Digitoxin

Disease Entry	ICD 11	Status	REF
Arrhythmia	BC9Z	Approved	[2]
Congestive cardiac insufficiency	BD1Z	Approved	[2]
Heart failure	BD10-BD13	Approved	[2]

Digitoxin Interacts with 1 DTT Molecule(s)

DTT Name	DTT ID	UniProt ID	Mode of Action	REF
Sodium/potassium-transporting ATPase (SPT ATPase)	TTQ38E9	AT1A1_HUMAN; AT1A2_HUMAN; AT1A3_HUMAN; AT1B1_HUMAN; AT1B2_HUMAN; AT1B3_HUMAN	Inhibitor	[5]

Digitoxin Interacts with 1 DTP Molecule(s)

DTP Name	DTP ID	UniProt ID	Mode of Action	REF
P-glycoprotein 1 (ABCB1)	DTUGYRD	MDR1_HUMAN	Substrate	[6]

Digitoxin Interacts with 3 DME Molecule(s)

DME Name	DME ID	UniProt ID	Mode of Action	REF
Cytochrome P450 3A4 (CYP3A4)	DE4LYSA	CP3A4_HUMAN	Metabolism	[7]
UDP-glucuronosyltransferase 1A1 (UGT1A1)	DEYGVN4	UD11_HUMAN	Metabolism	[8]
Sulfotransferase 1A1 (SULT1A1)	DEYWLRK	ST1A1_HUMAN	Metabolism	[9]

Digitoxin Interacts with 22 DOT Molecule(s)

DOT Name	DOT ID	UniProt ID	Mode of Action	REF
ATP-dependent translocase ABCB1 (ABCB1)	OTEJROBO	MDR1_HUMAN	Increases Transport	[10]
Nitric oxide synthase 3 (NOS3)	OTLDT7NR	NOS3_HUMAN	Increases Activity	[11]
Serine/threonine-protein kinase Chk1 (CHEK1)	OTTTI622	CHK1_HUMAN	Decreases Expression	[12]
Baculoviral IAP repeat-containing protein 5 (BIRC5)	OTILXZYL	BIRC5_HUMAN	Decreases Expression	[12]
Serine/threonine-protein kinase Chk2 (CHEK2)	OT8ZPCNS	CHK2_HUMAN	Decreases Expression	[12]
Cellular tumor antigen p53 (TP53)	OTIE1VH3	P53_HUMAN	Decreases Expression	[12]
Cyclin-dependent kinase 1 (CDK1)	OTW1SC2N	CDK1_HUMAN	Decreases Expression	[12]
Interleukin-8 (CXCL8)	OTS7T5VH	IL8_HUMAN	Decreases Secretion	[13]
G2/mitotic-specific cyclin-B1 (CCNB1)	OT19S7E5	CCNB1_HUMAN	Decreases Expression	[12]
Ribosomal protein S6 kinase beta-1 (RPS6KB1)	OTAELNGX	KS6B1_HUMAN	Decreases Phosphorylation	[14]
G1/S-specific cyclin-D1 (CCND1)	OT8HPTKJ	CCND1_HUMAN	Decreases Expression	[14]
NF-kappa-B inhibitor alpha (NFKBIA)	OTFT924M	IKBA_HUMAN	Decreases Phosphorylation	[13]
Tyrosine-protein phosphatase non-receptor type 6 (PTPN6)	OT33XNZM	PTN6_HUMAN	Increases Expression	[14]
Cyclin-dependent kinase inhibitor 1 (CDKN1A)	OTQWHCZE	CDN1A_HUMAN	Decreases Expression	[12]
Caspase-3 (CASP3)	OTIJRBE7	CASP3_HUMAN	Decreases Expression	[12]
Cyclin-dependent kinase inhibitor 1B (CDKN1B)	OTNY5LLZ	CDN1B_HUMAN	Decreases Expression	[12]
Caspase-9 (CASP9)	OTD4RFFG	CASP9_HUMAN	Increases Cleavage	[12]
Phosphatidylinositol 3,4,5-trisphosphate 3-phosphatase and dual-specificity protein phosphatase PTEN (PTEN)	OTOWDUNT	PTEN_HUMAN	Increases Expression	[14]
Cytochrome c (CYCS)	OTBFALJD	CYC_HUMAN	Increases Expression	[12]
Eukaryotic translation initiation factor 4E-binding protein 1 (EIF4EBP1)	OTHBQVD5	4EBP1_HUMAN	Decreases Phosphorylation	[14]
Caspase-8 (CASP8)	OTA8TVI8	CASP8_HUMAN	Increases Cleavage	[12]
E3 SUMO-protein ligase PIAS3 (PIAS3)	OT3TWH9R	PIAS3_HUMAN	Increases Expression	[14]

Indication(s) of Ixabepilone

Disease Entry	ICD 11	Status	REF
Breast cancer	2C60-2C65	Approved	[3]
Breast carcinoma	N.A.	Approved	[4]

Ixabepilone Interacts with 1 DTT Molecule(s)

DTT Name	DTT ID	UniProt ID	Mode of Action	REF
Tubulin (TUB)	TTML2WA	NOUNIPROTAC	Stablizer	[15]

Ixabepilone Interacts with 1 DTP Molecule(s)

DTP Name	DTP ID	UniProt ID	Mode of Action	REF
P-glycoprotein 1 (ABCB1)	DTUGYRD	MDR1_HUMAN	Substrate	[16]

Ixabepilone Interacts with 1 DME Molecule(s)

DME Name	DME ID	UniProt ID	Mode of Action	REF
Cytochrome P450 3A4 (CYP3A4)	DE4LYSA	CP3A4_HUMAN	Metabolism	[17]

Test Results of This Drug Combination in Other Disease Systems

Indication	DrugCom ID	Cell Line	Status	REF
Adult acute myeloid leukemia	DCFE3OX	HL-60(TB)	Investigative	[1]

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] 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: 6782).
• [3] 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: 6824).
• [4] Ixabepilone FDA Label
• [5] Treatment of congestive heart failure--current status of use of digitoxin. Eur J Clin Invest. 2001;31 Suppl 2:10-7.
• [6] The association of ABCB1 polymorphisms and elevated serum digitoxin concentrations in geriatric patients. Eur J Clin Pharmacol. 2008 Apr;64(4):367-72.
• [7] Species differences in the toxicity and cytochrome P450 IIIA-dependent metabolism of digitoxin. Mol Pharmacol. 1991 Nov;40(5):859-67.
• [8] Use of a human liver microsome bank in drug glucuronidation studies. Toxicol In Vitro. 1991;5(5-6):559-62.
• [9] Hydroxysteroid sulfotransferase and a specific UDP-glucuronosyltransferase are involved in the metabolism of digitoxin in man. Naunyn Schmiedebergs Arch Pharmacol. 1992 Aug;346(2):226-33.
• [10] Heterogeneous transport of digitalis-like compounds by P-glycoprotein in vesicular and cellular assays. Toxicol In Vitro. 2016 Apr;32:138-45. doi: 10.1016/j.tiv.2015.12.009. Epub 2015 Dec 17.
• [11] Digitoxin elicits anti-inflammatory and vasoprotective properties in endothelial cells: Therapeutic implications for the treatment of atherosclerosis? Atherosclerosis. 2009 Oct;206(2):390-6.
• [12] Digitoxin and a synthetic monosaccharide analog inhibit cell viability in lung cancer cells. Toxicol Appl Pharmacol. 2012 Jan 1;258(1):51-60. doi: 10.1016/j.taap.2011.10.007. Epub 2011 Oct 18.
• [13] Digitoxin mimics gene therapy with CFTR and suppresses hypersecretion of IL-8 from cystic fibrosis lung epithelial cells. Proc Natl Acad Sci U S A. 2004 May 18;101(20):7693-8. doi: 10.1073/pnas.0402030101. Epub 2004 May 10.
• [14] Digitoxin promotes apoptosis and inhibits proliferation and migration by reducing HIF-1 and STAT3 in KRAS mutant human colon cancer cells. Chem Biol Interact. 2022 Jan 5;351:109729. doi: 10.1016/j.cbi.2021.109729. Epub 2021 Oct 28.
• [15] Mullard A: 2010 FDA drug approvals. Nat Rev Drug Discov. 2011 Feb;10(2):82-5.
• [16] Ixabepilone, a novel microtubule-targeting agent for breast cancer, is a substrate for P-glycoprotein (P-gp/MDR1/ABCB1) but not breast cancer resistance protein (BCRP/ABCG2). J Pharmacol Exp Ther. 2011 May;337(2):423-32.
• [17] The effect of ketoconazole on the pharmacokinetics and pharmacodynamics of ixabepilone: a first in class epothilone B analogue in late-phase clinical development. Clin Cancer Res. 2008 May 1;14(9):2701-9.