Details of the Drug Combination

General Information of Drug Combination (ID: DC81QI7)

• Drug Combination Name: Methoxsalen + Pepstatin
• Indication: Chronic myelogenous leukemia; Status: Investigative [1]
• Component Drugs:
  Methoxsalen (DME8FZ9): Small molecular drug
  Pepstatin (DM9S1EA): Small molecular drug
• High-throughput Screening Result:
  Testing Cell Line: KBM-7
  Zero Interaction Potency (ZIP) Score: 16.98
  Bliss Independence Score: 16.98
  Loewe Additivity Score: 27.73
  LHighest Single Agent (HSA) Score: 27.73

Molecular Interaction Atlas of This Drug Combination

Indication(s) of Methoxsalen

Disease Entry	ICD 11	Status	REF
Cutaneous T-cell lymphoma	2B01	Approved	[2]
Primary cutaneous T-cell lymphoma	N.A.	Approved	[3]
Psoriasis vulgaris	EA90	Approved	[2]

Methoxsalen Interacts with 1 DTT Molecule(s)

DTT Name	DTT ID	UniProt ID	Mode of Action	REF
Cytochrome P450 2A6 (CYP2A6)	TTAQ6ZW	CP2A6_HUMAN	Binder	[6]

Methoxsalen Interacts with 2 DME Molecule(s)

DME Name	DME ID	UniProt ID	Mode of Action	REF
Cytochrome P450 3A4 (CYP3A4)	DE4LYSA	CP3A4_HUMAN	Metabolism	[7]
Cytochrome P450 2A6 (CYP2A6)	DEJVYAZ	CP2A6_HUMAN	Metabolism	[8]

Methoxsalen Interacts with 26 DOT Molecule(s)

DOT Name	DOT ID	UniProt ID	Mode of Action	REF
Cytochrome P450 2A6 (CYP2A6)	OT52TWG3	CP2A6_HUMAN	Decreases Activity	[9]
Cytochrome P450 3A4 (CYP3A4)	OTQGYY83	CP3A4_HUMAN	Increases Expression	[7]
Cytochrome P450 1A2 (CYP1A2)	OTLLBX48	CP1A2_HUMAN	Decreases Activity	[10]
Cocaine esterase (CES2)	OTC647SQ	EST2_HUMAN	Increases Expression	[7]
Nuclear receptor subfamily 1 group I member 2 (NR1I2)	OTC5U0N5	NR1I2_HUMAN	Increases Activity	[7]
Cytochrome P450 2D6 (CYP2D6)	OTZJC802	CP2D6_HUMAN	Decreases Activity	[11]
Cytochrome P450 2C9 (CYP2C9)	OTGLBN29	CP2C9_HUMAN	Decreases Activity	[11]
Class E basic helix-loop-helix protein 40 (BHLHE40)	OTITX14U	BHE40_HUMAN	Decreases Expression	[12]
Baculoviral IAP repeat-containing protein 5 (BIRC5)	OTILXZYL	BIRC5_HUMAN	Decreases Expression	[12]
ATP-binding cassette sub-family C member 3 (ABCC3)	OTC3IJV4	MRP3_HUMAN	Increases Expression	[5]
Tumor necrosis factor (TNF)	OT4IE164	TNFA_HUMAN	Decreases Expression	[13]
Cellular tumor antigen p53 (TP53)	OTIE1VH3	P53_HUMAN	Increases Expression	[12]
Cytochrome P450 1A1 (CYP1A1)	OTE4EFH8	CP1A1_HUMAN	Decreases Activity	[14]
ATP-dependent translocase ABCB1 (ABCB1)	OTEJROBO	MDR1_HUMAN	Increases Expression	[15]
Apoptosis regulator Bcl-2 (BCL2)	OT9DVHC0	BCL2_HUMAN	Decreases Expression	[12]
Phosphatidylcholine translocator ABCB4 (ABCB4)	OTE6PY83	MDR3_HUMAN	Decreases Expression	[16]
Cytochrome P450 7A1 (CYP7A1)	OT8Z5KLD	CP7A1_HUMAN	Decreases Expression	[5]
Multidrug resistance-associated protein 1 (ABCC1)	OTGUN89S	MRP1_HUMAN	Increases Expression	[15]
Histidine ammonia-lyase (HAL)	OT1HXFCV	HUTH_HUMAN	Decreases Activity	[17]
Caspase-9 (CASP9)	OTD4RFFG	CASP9_HUMAN	Decreases Expression	[12]
Apoptosis regulator BAX (BAX)	OTAW0V4V	BAX_HUMAN	Increases Expression	[12]
Caspase-8 (CASP8)	OTA8TVI8	CASP8_HUMAN	Decreases Expression	[12]
Nuclear receptor subfamily 0 group B member 2 (NR0B2)	OT7UVICX	NR0B2_HUMAN	Increases Expression	[5]
Cytochrome P450 1B1 (CYP1B1)	OTYXFLSD	CP1B1_HUMAN	Decreases Activity	[14]
ATP-binding cassette sub-family C member 2 (ABCC2)	OTJSIGV5	MRP2_HUMAN	Decreases Expression	[15]
Broad substrate specificity ATP-binding cassette transporter ABCG2 (ABCG2)	OTW8V2V1	ABCG2_HUMAN	Increases Expression	[15]

Indication(s) of Pepstatin

Disease Entry	ICD 11	Status	REF
Malaria	1F40-1F45	Terminated	[4]

Pepstatin Interacts with 4 DTT Molecule(s)

DTT Name	DTT ID	UniProt ID	Mode of Action	REF
Plasmodium Cysteine protease falcipain-2 (Malaria CPF2)	TT7EASG	Q9N6S8_PLAFA	Inhibitor	[18]
Plasmodium Plasmepsin 2 (Malaria PLA2)	TTXMNHO	PLM2_PLAFA	Inhibitor	[19]
Plasmodium Plasmepsin 1 (Malaria PLA1)	TTH9VL3	PLM1_PLAFA	Inhibitor	[19]
Plasmodium Cysteine protease falcipain (Malaria CPF)	TTJNPTK	NOUNIPROTAC	Inhibitor	[19]

Pepstatin Interacts with 1 DOT Molecule(s)

DOT Name	DOT ID	UniProt ID	Mode of Action	REF
Cathepsin D (CTSD)	OTQZ36F3	CATD_HUMAN	Decreases Activity	[20]

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] FDA Approved Drug Products from FDA Official Website. 2009. Application Number: (NDA) 009048.
• [3] Methoxsalen FDA Label
• [4] Trusted, scientifically sound profiles of drug programs, clinical trials, safety reports, and company deals, written by scientists. Springer. 2015. Adis Insight (drug id 800004280)
• [5] Adaptive homeostasis of the vitamin D-vitamin D nuclear receptor axis in 8-methoxypsoralen-induced hepatotoxicity. Toxicol Appl Pharmacol. 2019 Jan 1;362:150-158. doi: 10.1016/j.taap.2018.11.002. Epub 2018 Nov 10.
• [6] Mutagenicity and carcinogenicity of methoxsalen plus UV-A. Arch Dermatol. 1984 May;120(5):662-9.
• [7] Photochemotherapeutic agent 8-methoxypsoralen induces cytochrome P450 3A4 and carboxylesterase HCE2: evidence on an involvement of the pregnane X receptor. Toxicol Sci. 2007 Jan;95(1):13-22.
• [8] Identification of the human cytochrome P450 enzymes involved in the in vitro metabolism of artemisinin. Br J Clin Pharmacol. 1999 Oct;48(4):528-35.
• [9] Mimicking gene defects to treat drug dependence. Ann N Y Acad Sci. 2000;909:233-46. doi: 10.1111/j.1749-6632.2000.tb06685.x.
• [10] Specificity of substrate and inhibitor probes for cytochrome P450s: evaluation of in vitro metabolism using cDNA-expressed human P450s and human liver microsomes. Xenobiotica. 1996 Jul;26(7):681-93.
• [11] Functional expression and comparative characterization of nine murine cytochromes P450 by fluorescent inhibition screening. Drug Metab Dispos. 2008 Jul;36(7):1322-31.
• [12] Down regulation of differentiated embryonic chondrocytes 1 (DEC1) is involved in 8-methoxypsoralen-induced apoptosis in HepG2 cells. Toxicology. 2012 Nov 15;301(1-3):58-65. doi: 10.1016/j.tox.2012.06.022. Epub 2012 Jul 11.
• [13] UVA activated 8-MOP and chlorpromazine inhibit release of TNF-alpha by post-transcriptional regulation. Photochem Photobiol Sci. 2004 Apr;3(4):334-6. doi: 10.1039/b302621c. Epub 2004 Feb 24.
• [14] Association of CYP1A1 and CYP1B1 inhibition in in vitro assays with drug-induced liver injury. J Toxicol Sci. 2021;46(4):167-176. doi: 10.2131/jts.46.167.
• [15] ABC-transporter blockage mediated by xanthotoxin and bergapten is the major pathway for chemosensitization of multidrug-resistant cancer cells. Toxicol Appl Pharmacol. 2017 Dec 15;337:22-29. doi: 10.1016/j.taap.2017.10.018. Epub 2017 Oct 25.
• [16] 8-Methoxypsoralen disrupts MDR3-mediated phospholipids efflux and bile acid homeostasis and its relevance to hepatotoxicity. Toxicology. 2017 Jul 1;386:40-48. doi: 10.1016/j.tox.2017.05.011. Epub 2017 May 24.
• [17] Inhibition of histidine ammonia lyase by 8-methoxypsoralen and psoralen-oxidized photoproducts. Photochem Photobiol. 2010 Nov-Dec;86(6):1272-7. doi: 10.1111/j.1751-1097.2010.00807.x. Epub 2010 Sep 29.
• [18] Novel molecular targets for antimalarial drug development. Chem Biol Drug Des. 2008 Apr;71(4):287-97.
• [19] Novel molecular targets for antimalarial chemotherapy. Int J Antimicrob Agents. 2007 Jul;30(1):4-10.
• [20] Evidence of a lysosomal pathway for apoptosis induced by the synthetic retinoid CD437 in human leukemia HL-60 cells. Cell Death Differ. 2001 May;8(5):477-85. doi: 10.1038/sj.cdd.4400843.