Details of the Drug Combination

General Information of Drug Combination (ID: DCY47EG)

• Drug Combination Name: Thioguanine + SCH 727965
• Indication: Chronic myelogenous leukemia; Status: Investigative [1]
• Component Drugs:
  Thioguanine (DM7NKEV): Small molecular drug
  SCH 727965 (DMCJLD1): Small molecular drug
• High-throughput Screening Result:
  Testing Cell Line: K-562
  Zero Interaction Potency (ZIP) Score: 2.4
  Bliss Independence Score: 2.2
  Loewe Additivity Score: 0.51
  LHighest Single Agent (HSA) Score: 0.91

Molecular Interaction Atlas of This Drug Combination

Indication(s) of Thioguanine

Disease Entry	ICD 11	Status	REF
Acute lymphocytic leukaemia	2B33.3	Approved	[2]
Acute myelogenous leukaemia	2A41	Approved	[3]
Acute myeloid leukaemia	2A60	Approved	[4]
Middle East Respiratory Syndrome (MERS)	1D64	Preclinical	[5]
Severe acute respiratory syndrome (SARS)	1D65	Preclinical	[5]

Thioguanine Interacts with 3 DTT Molecule(s)

DTT Name	DTT ID	UniProt ID	Mode of Action	REF
MERS-CoV papain-like proteinase (PL-PRO)	TTYJOLE	R1AB_CVEMC (854-2740)	Inhibitor	[5]
Inosine-5'-monophosphate dehydrogenase (IMPDH)	TTCAQMW	NOUNIPROTAC	Intercalator	[7]
SARS-CoV papain-like proteinase (PL-PRO)	TTRGHB2	R1AB_CVHSA (819-2740)	Inhibitor	[5]

Thioguanine Interacts with 3 DTP Molecule(s)

DTP Name	DTP ID	UniProt ID	Mode of Action	REF
Breast cancer resistance protein (ABCG2)	DTI7UX6	ABCG2_HUMAN	Substrate	[8]
Multidrug resistance-associated protein 4 (ABCC4)	DTCSGPB	MRP4_HUMAN	Substrate	[9]
Concentrative Na(+)-nucleoside cotransporter 3 (SLC28A3)	DT4YL5R	S28A3_HUMAN	Substrate	[10]

Thioguanine Interacts with 2 DME Molecule(s)

DME Name	DME ID	UniProt ID	Mode of Action	REF
Thiopurine methyltransferase (TPMT)	DEFQ8VO	TPMT_HUMAN	Metabolism	[11]
Hypoxanthine phosphoribosyltransferase (HPRT1)	DEVXTP5	HPRT_HUMAN	Metabolism	[12]

Thioguanine Interacts with 11 DOT Molecule(s)

DOT Name	DOT ID	UniProt ID	Mode of Action	REF
Thiopurine S-methyltransferase (TPMT)	OTFOX70W	TPMT_HUMAN	Increases ADR	[13]
Hypoxanthine-guanine phosphoribosyltransferase (HPRT1)	OTOEEEXG	HPRT_HUMAN	Decreases Response To Substance	[14]
Thiopurine S-methyltransferase (TPMT)	OTFOX70W	TPMT_HUMAN	Increases ADR	[15]
Inosine-5'-monophosphate dehydrogenase 2 (IMPDH2)	OTPG0K7E	IMDH2_HUMAN	Increases Expression	[16]
Cellular tumor antigen p53 (TP53)	OTIE1VH3	P53_HUMAN	Increases Activity	[17]
Dystrophin (DMD)	OTD21T5J	DMD_HUMAN	Increases Splicing	[18]
Occludin (OCLN)	OTSUTVWL	OCLN_HUMAN	Decreases Activity	[19]
DNA mismatch repair protein Msh2 (MSH2)	OT10H1AB	MSH2_HUMAN	Increases Response To Substance	[20]
ATP-binding cassette sub-family C member 5 (ABCC5)	OT34G4US	MRP5_HUMAN	Decreases Response To Substance	[21]
Caspase-8 (CASP8)	OTA8TVI8	CASP8_HUMAN	Increases Response To Substance	[17]
Baculoviral IAP repeat-containing protein 2 (BIRC2)	OTFXFREP	BIRC2_HUMAN	Decreases Response To Substance	[22]

Indication(s) of SCH 727965

Disease Entry	ICD 11	Status	REF
Acute lymphoblastic leukaemia	2A85	Discontinued in Phase 3	[6]

SCH 727965 Interacts with 3 DTT Molecule(s)

DTT Name	DTT ID	UniProt ID	Mode of Action	REF
Cyclin-dependent kinase 9 (CDK9)	TT1LVF2	CDK9_HUMAN	Inhibitor	[23]
Cyclin-dependent kinase 1 (CDK1)	TTH6V3D	CDK1_HUMAN	Inhibitor	[23]
Cyclin-dependent kinase 2 (CDK2)	TT7HF4W	CDK2_HUMAN	Inhibitor	[23]

SCH 727965 Interacts with 7 DOT Molecule(s)

DOT Name	DOT ID	UniProt ID	Mode of Action	REF
Retinoblastoma-associated protein (RB1)	OTQJUJMZ	RB_HUMAN	Decreases Phosphorylation	[24]
Poly polymerase 1 (PARP1)	OT310QSG	PARP1_HUMAN	Increases Cleavage	[24]
Breast cancer type 1 susceptibility protein (BRCA1)	OT5BN6VH	BRCA1_HUMAN	Decreases Expression	[25]
Breast cancer type 2 susceptibility protein (BRCA2)	OTF1XSV1	BRCA2_HUMAN	Decreases Expression	[25]
DNA repair protein RAD51 homolog 1 (RAD51)	OTNVWGC1	RAD51_HUMAN	Decreases Expression	[25]
Fanconi anemia group D2 protein (FANCD2)	OTVEB5LF	FACD2_HUMAN	Decreases Expression	[25]
Cyclin-dependent kinase 12 (CDK12)	OTZUDGNU	CDK12_HUMAN	Decreases Activity	[25]

Test Results of This Drug Combination in Other Disease Systems

Indication	DrugCom ID	Cell Line	Status	REF
Adult acute myeloid leukemia	DCPH6YF	HL-60(TB)	Investigative	[1]
Anaplastic large cell lymphoma	DCKITK8	SR	Investigative	[1]
Astrocytoma	DCPIJ2G	U251	Investigative	[1]
Astrocytoma	DCDHWEJ	SNB-19	Investigative	[1]
Childhood T acute lymphoblastic leukemia	DC8LGXH	CCRF-CEM	Investigative	[1]
Glioma	DCW6I6D	SF-295	Investigative	[1]
Adenocarcinoma	DCQJ74A	DU-145	Investigative	[26]
Adenocarcinoma	DCLV9NP	A549	Investigative	[26]
High grade ovarian serous adenocarcinoma	DCHA01T	NCI\\/ADR-RES	Investigative	[26]
Pleural epithelioid mesothelioma	DCODLS4	NCI-H226	Investigative	[26]

References

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• [2] Drugs@FDA. U.S. Food and Drug Administration. U.S. Department of Health & Human Services. 2015
• [3] Thioguanine FDA Label
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• [5] Thiopurine analogs and mycophenolic acid synergistically inhibit the papain-like protease of Middle East respiratory syndrome coronavirus. Antiviral Res. 2015 Mar;115:9-16.
• [6] 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: 7379).
• [7] Immune effector cells produce lethal DNA damage in cells treated with a thiopurine. Cancer Res. 2009 Mar 15;69(6):2393-9.
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• [18] The effect of 6-thioguanine on alternative splicing and antisense-mediated exon skipping treatment for duchenne muscular dystrophy. PLoS Curr. 2012 Dec 12;4:ecurrents.md.597d700f92eaa70de261ea0d91821377. doi: 10.1371/currents.md.597d700f92eaa70de261ea0d91821377.
• [19] The thiopurine methyltransferase genetic polymorphism is associated with thioguanine-related veno-occlusive disease of the liver in children with acute lymphoblastic leukemia. Clin Pharmacol Ther. 2006 Oct;80(4):375-83. doi: 10.1016/j.clpt.2006.07.002.
• [20] The effect of Msh2 knockdown on methylating agent induced toxicity in DNA glycosylase deficient cells. Toxicology. 2010 Jan 31;268(1-2):111-7. doi: 10.1016/j.tox.2009.12.008. Epub 2009 Dec 16.
• [21] The multidrug resistance protein 5 (ABCC5) confers resistance to 5-fluorouracil and transports its monophosphorylated metabolites. Mol Cancer Ther. 2005 May;4(5):855-63.
• [22] Expression and prognostic significance of IAP-family genes in human cancers and myeloid leukemias. Clin Cancer Res. 2000 May;6(5):1796-803.
• [23] Cell cycle kinases as therapeutic targets for cancer. Nat Rev Drug Discov. 2009 Jul;8(7):547-66.
• [24] Dinaciclib (SCH 727965), a novel and potent cyclin-dependent kinase inhibitor. Mol Cancer Ther. 2010 Aug;9(8):2344-53. doi: 10.1158/1535-7163.MCT-10-0324. Epub 2010 Jul 27.
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• [26] Loss of function mutations in VARS encoding cytoplasmic valyl-tRNA synthetase cause microcephaly, seizures, and progressive cerebral atrophy.Hum Genet. 2018 Apr;137(4):293-303. doi: 10.1007/s00439-018-1882-3. Epub 2018 Apr 24.