Target Information

Target General Infomation
Target ID
T49507
Former ID
TTDC00045
Target Name
Ephrin type-B receptor 4
Gene Name
EPHB4
Synonyms
Tyrosine-protein kinase TYRO11; Tyrosine-protein kinase receptor HTK; EPHB4
Target Type
Clinical Trial
Disease Cancer [ICD9: 140-229; ICD10: C00-C96]
Late-stage non-small cell lung cancer [ICD9: 162, 203.0, 208.9; ICD10: C33-C34]
Function
Receptor tyrosine kinase which binds promiscuously transmembrane ephrin-B family ligands residing on adjacent cells, leading to contact-dependent bidirectional signaling into neighboring cells. The signaling pathway downstream of the receptor isreferred to as forward signaling while the signaling pathway downstream of the ephrin ligand is referred to as reverse signaling. Together with its cognate ligand/functional ligand EFNB2 plays a central role in heart morphogenesis and angiogenesis through regulation of cell adhesion and cell migration. EPHB4- mediated forward signaling controls cellular repulsion and segregation form EFNB2-expressing cells. Plays also a role in postnatal blood vessel remodeling, morphogenesis and permeability and is thus important in the context of tumor angiogenesis.
BioChemical Class
Kinase
Target Validation
T49507
UniProt ID
P54760
EC Number
EC 2.7.10.1
Sequence
MELRVLLCWASLAAALEETLLNTKLETADLKWVTFPQVDGQWEELSGLDEEQHSVRTYEV
CDVQRAPGQAHWLRTGWVPRRGAVHVYATLRFTMLECLSLPRAGRSCKETFTVFYYESDA
DTATALTPAWMENPYIKVDTVAAEHLTRKRPGAEATGKVNVKTLRLGPLSKAGFYLAFQD
QGACMALLSLHLFYKKCAQLTVNLTRFPETVPRELVVPVAGSCVVDAVPAPGPSPSLYCR
EDGQWAEQPVTGCSCAPGFEAAEGNTKCRACAQGTFKPLSGEGSCQPCPANSHSNTIGSA
VCQCRVGYFRARTDPRGAPCTTPPSAPRSVVSRLNGSSLHLEWSAPLESGGREDLTYALR
CRECRPGGSCAPCGGDLTFDPGPRDLVEPWVVVRGLRPDFTYTFEVTALNGVSSLATGPV
PFEPVNVTTDREVPPAVSDIRVTRSSPSSLSLAWAVPRAPSGAVLDYEVKYHEKGAEGPS
SVRFLKTSENRAELRGLKRGASYLVQVRARSEAGYGPFGQEHHSQTQLDESEGWREQLAL
IAGTAVVGVVLVLVVIVVAVLCLRKQSNGREAEYSDKHGQYLIGHGTKVYIDPFTYEDPN
EAVREFAKEIDVSYVKIEEVIGAGEFGEVCRGRLKAPGKKESCVAIKTLKGGYTERQRRE
FLSEASIMGQFEHPNIIRLEGVVTNSMPVMILTEFMENGALDSFLRLNDGQFTVIQLVGM
LRGIASGMRYLAEMSYVHRDLAARNILVNSNLVCKVSDFGLSRFLEENSSDPTYTSSLGG
KIPIRWTAPEAIAFRKFTSASDAWSYGIVMWEVMSFGERPYWDMSNQDVINAIEQDYRLP
PPPDCPTSLHQLMLDCWQKDRNARPRFPQVVSALDKMIRNPASLKIVARENGGASHPLLD
QRQPHYSAFGSVGEWLRAIKMGRYEESFAAAGFGSFELVSQISAEDLLRIGVTLAGHQKK
ILASVQHMKSQAKPGTPGGTGGPAPQY
Drugs and Mode of Action
Drug(s) KD019 Drug Info Phase 2 Late-stage non-small cell lung cancer [523716]
Inhibitor compound 20 Drug Info [532265]
compound 66 Drug Info [530413]
EphB4 inhibitors Drug Info [543507]
TG-100435 Drug Info [528527]
Modulator KD019 Drug Info [531665], [555868]
Target Expression Profile (TEP) and Drug Resistance Mutation (DRM)
TEP EXP Info
Pathways
KEGG Pathway Axon guidance
Pathway Interaction Database EPHB forward signaling
EphrinB-EPHB pathway
Ephrin B reverse signaling
Reactome EPH-Ephrin signaling
EPHB-mediated forward signaling
EPH-ephrin mediated repulsion of cells
WikiPathways Vitamin D Receptor Pathway
References
Ref 523716ClinicalTrials.gov (NCT01487174) KD019 Versus Erlotinib in Subjects With Stage IIIB/IV Non Small Cell Lung Cancer With Progression After First- or Second-Line Chemotherapy. U.S. National Institutes of Health.
Ref 528527Bioorg Med Chem Lett. 2007 Feb 1;17(3):602-8. Epub 2006 Nov 7.Discovery of [7-(2,6-dichlorophenyl)-5-methylbenzo [1,2,4]triazin-3-yl]-[4-(2-pyrrolidin-1-ylethoxy)phenyl]amine--a potent, orally active Src kinase inhibitor with anti-tumor activity in preclinical assays.
Ref 530413Structure-based optimization of potent and selective inhibitors of the tyrosine kinase erythropoietin producing human hepatocellular carcinoma receptor B4 (EphB4). J Med Chem. 2009 Oct 22;52(20):6433-46.
Ref 531665XL647--a multitargeted tyrosine kinase inhibitor: results of a phase II study in subjects with non-small cell lung cancer who have progressed after responding to treatment with either gefitinib or erlotinib. J Thorac Oncol. 2012 Jan;7(1):219-26.
Ref 532265Amino acid conjugates of lithocholic acid as antagonists of the EphA2 receptor. J Med Chem. 2013 Apr 11;56(7):2936-47.
Ref 543507(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. (Target id: 1833).
Ref 555868Phase II study of the multitargeted tyrosine kinase inhibitor XL647 in patients with non-small-cell lung cancer. J Thorac Oncol. 2012 May;7(5):856-65. doi: 10.1097/JTO.0b013e31824c943f.

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