3oy1
From Proteopedia
Highly Selective c-Jun N-Terminal Kinase (JNK) 2 and 3 Inhibitors with In Vitro CNS-like Pharmacokinetic Properties
Structural highlights
Disease[MK10_HUMAN] Defects in MAPK10 are a cause of epileptic encephalopathy Lennox-Gastaut type (EELG) [MIM:606369]. Epileptic encephalopathies of the Lennox-Gastaut group are childhood epileptic disorders characterized by severe psychomotor delay and seizures. Note=A chromosomal aberration involving MAPK10 has been found in a single patient. Translocation t(Y;4)(q11.2;q21) which causes MAPK10 truncation. Function[MK10_HUMAN] Serine/threonine-protein kinase involved in various processes such as neuronal proliferation, differentiation, migration and programmed cell death. Extracellular stimuli such as proinflammatory cytokines or physical stress stimulate the stress-activated protein kinase/c-Jun N-terminal kinase (SAP/JNK) signaling pathway. In this cascade, two dual specificity kinases MAP2K4/MKK4 and MAP2K7/MKK7 phosphorylate and activate MAPK10/JNK3. In turn, MAPK10/JNK3 phosphorylates a number of transcription factors, primarily components of AP-1 such as JUN and ATF2 and thus regulates AP-1 transcriptional activity. Plays regulatory roles in the signaling pathways during neuronal apoptosis. Phosphorylates the neuronal microtubule regulator STMN2. Acts in the regulation of the beta-amyloid precursor protein/APP signaling during neuronal differentiation by phosphorylating APP. Participates also in neurite growth in spiral ganglion neurons.[1] Publication Abstract from PubMedIn this Letter, we describe the discovery of selective JNK2 and JNK3 inhibitors, such as 10, that routinely exhibit >10-fold selectivity over JNK1 and >1000-fold selectivity over related MAPKs, p38alpha and ERK2. Substitution of the naphthalene ring affords an isoform selective JNK3 inhibitor, 30, with approximately 10-fold selectivity over both JNK1 and JNK2. A naphthalene ring penetrates deep into the selectivity pocket accounting for the differentiation amongst the kinases. Interestingly, the gatekeeper Met146 sulfide interacts with the naphthalene ring in a sulfur-pi stacking interaction. Compound 38 ameliorates neurotoxicity induced by amyloid-beta in human cortical neurons. Lastly, we demonstrate how to install propitious in vitro CNS-like properties into these selective inhibitors. Highly selective c-Jun N-terminal kinase (JNK) 2 and 3 inhibitors with in vitro CNS-like pharmacokinetic properties prevent neurodegeneration.,Probst GD, Bowers S, Sealy JM, Truong AP, Hom RK, Galemmo RA Jr, Konradi AW, Sham HL, Quincy DA, Pan H, Yao N, Lin M, Toth G, Artis DR, Zmolek W, Wong K, Qin A, Lorentzen C, Nakamura DF, Quinn KP, Sauer JM, Powell K, Ruslim L, Wright S, Chereau D, Ren Z, Anderson JP, Bard F, Yednock TA, Griswold-Prenner I Bioorg Med Chem Lett. 2011 Jan 1;21(1):315-9. Epub 2010 Nov 5. PMID:21112785[2] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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Categories: Human | Large Structures | Mitogen-activated protein kinase | Bowers, S | Galemmo, R A | Hom, R K | Konradi, A W | Neitz, J | Pan, H | Probst, G D | Quincy, D | Sealy, J M | Sham, H L | Truong, A | Yao, N | Cn | Kinase inhibitor | Selectivity | Transferase | Transherase-transferase inhibitor complex
