OCA at 10:11, 17 January 2024

OCA — Wed, 17 Jan 2024 10:11:59 GMT

←Older revision		Revision as of 10:11, 17 January 2024
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-	'''Unreleased structure'''

-	The entry ~~8x6r~~ is ~~ON HOLD~~ ~~until Paper~~ Publication	+	==KRasG12C in complex with inhibitor==
		+	<StructureSection load='8x6r' size='340' side='right'caption='[[8x6r]], [[Resolution\|resolution]] 1.85Å' scene=''>
		+	== Structural highlights ==
		+	<table><tr><td colspan='2'>[[8x6r]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=8X6R OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=8X6R FirstGlance]. <br>
		+	</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models\|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution\|Resolution]] 1.85Å</td></tr>
		+	<tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GDP:GUANOSINE-5-DIPHOSPHATE'>GDP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=Y9D:1-[7-[6-ethenyl-8-ethoxy-7-(5-methyl-1~{H}-indazol-4-yl)-2-(1-methylpiperidin-4-yl)oxy-quinazolin-4-yl]-2,7-diazaspiro[3.5]nonan-2-yl]propan-1-one'>Y9D</scene></td></tr>
		+	<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=8x6r FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8x6r OCA], [https://pdbe.org/8x6r PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8x6r RCSB], [https://www.ebi.ac.uk/pdbsum/8x6r PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8x6r ProSAT]</span></td></tr>
		+	</table>
		+	== Disease ==
		+	[https://www.uniprot.org/uniprot/RASK_HUMAN RASK_HUMAN] Defects in KRAS are a cause of acute myelogenous leukemia (AML) [MIM:[https://omim.org/entry/601626 601626]. AML is a malignant disease in which hematopoietic precursors are arrested in an early stage of development.<ref>PMID:8955068</ref> Defects in KRAS are a cause of juvenile myelomonocytic leukemia (JMML) [MIM:[https://omim.org/entry/607785 607785]. JMML is a pediatric myelodysplastic syndrome that constitutes approximately 30% of childhood cases of myelodysplastic syndrome (MDS) and 2% of leukemia. It is characterized by leukocytosis with tissue infiltration and in vitro hypersensitivity of myeloid progenitors to granulocyte-macrophage colony stimulating factor. Defects in KRAS are the cause of Noonan syndrome type 3 (NS3) [MIM:[https://omim.org/entry/609942 609942]. Noonan syndrome (NS) [MIM:[https://omim.org/entry/163950 163950] is a disorder characterized by dysmorphic facial features, short stature, hypertelorism, cardiac anomalies, deafness, motor delay, and a bleeding diathesis. It is a genetically heterogeneous and relatively common syndrome, with an estimated incidence of 1 in 1000-2500 live births. Rarely, NS is associated with juvenile myelomonocytic leukemia (JMML). NS3 inheritance is autosomal dominant.<ref>PMID:16773572</ref> <ref>PMID:16474405</ref> <ref>PMID:17468812</ref> <ref>PMID:17056636</ref> <ref>PMID:19396835</ref> <ref>PMID:20949621</ref> Defects in KRAS are a cause of gastric cancer (GASC) [MIM:[https://omim.org/entry/613659 613659]; also called gastric cancer intestinal or stomach cancer. Gastric cancer is a malignant disease which starts in the stomach, can spread to the esophagus or the small intestine, and can extend through the stomach wall to nearby lymph nodes and organs. It also can metastasize to other parts of the body. The term gastric cancer or gastric carcinoma refers to adenocarcinoma of the stomach that accounts for most of all gastric malignant tumors. Two main histologic types are recognized, diffuse type and intestinal type carcinomas. Diffuse tumors are poorly differentiated infiltrating lesions, resulting in thickening of the stomach. In contrast, intestinal tumors are usually exophytic, often ulcerating, and associated with intestinal metaplasia of the stomach, most often observed in sporadic disease.<ref>PMID:3034404</ref> <ref>PMID:7773929</ref> <ref>PMID:14534542</ref> Note=Defects in KRAS are a cause of pylocytic astrocytoma (PA). Pylocytic astrocytomas are neoplasms of the brain and spinal cord derived from glial cells which vary from histologically benign forms to highly anaplastic and malignant tumors.<ref>PMID:8439212</ref> Defects in KRAS are a cause of cardiofaciocutaneous syndrome (CFC syndrome) [MIM:[https://omim.org/entry/115150 115150]; also known as cardio-facio-cutaneous syndrome. CFC syndrome is characterized by a distinctive facial appearance, heart defects and mental retardation. Heart defects include pulmonic stenosis, atrial septal defects and hypertrophic cardiomyopathy. Some affected individuals present with ectodermal abnormalities such as sparse, friable hair, hyperkeratotic skin lesions and a generalized ichthyosis-like condition. Typical facial features are similar to Noonan syndrome. They include high forehead with bitemporal constriction, hypoplastic supraorbital ridges, downslanting palpebral fissures, a depressed nasal bridge, and posteriorly angulated ears with prominent helices. The inheritance of CFC syndrome is autosomal dominant. Note=KRAS mutations are involved in cancer development.
		+	== Function ==
		+	[https://www.uniprot.org/uniprot/RASK_HUMAN RASK_HUMAN] Ras proteins bind GDP/GTP and possess intrinsic GTPase activity.
		+	<div style="background-color:#fffaf0;">
		+	== Publication Abstract from PubMed ==
		+	Although KRAS protein had been classified as an undruggable target, inhibitors of KRAS G12C mutant protein were recently reported to show clinical efficacy in solid tumors. In our previous report, we identified 1-2,7-diazaspiro[3.5]non-2-ylprop-2-en-1-one derivative (1) as a KRAS G12C inhibitor that covalently binds to Cys12 of KRAS G12C protein. Compound 1 exhibited potent cellular pERK inhibition and cell growth inhibition against a KRAS G12C mutation-positive cell line and showed an antitumor effect on subcutaneous administration in an NCI-H1373 (KRAS G12C mutation-positive cell line) xenograft mouse model in a dose-dependent manner. In this report, we further optimized the substituents on the quinazoline scaffold based on the structure-based drug design from the co-crystal structure analysis of compound 1 and KRAS G12C to enhance in vitro activity. As a result, ASP6918 was found to exhibit extremely potent in vitro activity and induce dose-dependent tumor regression in an NCI-H1373 xenograft mouse model after oral administration.

-	~~Authors~~: Amano, Y., ~~Tateishi~~, Y.	+	Discovery of ASP6918, a KRAS G12C inhibitor: Synthesis and structure-activity relationships of 1-2,7-diazaspiro[3.5]non-2-ylprop-2-en-1-one derivatives as covalent inhibitors with good potency and oral activity for the treatment of solid tumors.,Imaizumi T, Shimada I, Satake Y, Yamaki S, Koike T, Nigawara T, Kaneko O, Amano Y, Mori K, Yamanaka Y, Nakayama A, Nishizono Y, Shimazaki M, Nagashima T, Kuramoto K Bioorg Med Chem. 2024 Jan 15;98:117581. doi: 10.1016/j.bmc.2023.117581. Epub 2023 , Dec 27. PMID:38176113<ref>PMID:38176113</ref>

-	~~Description~~: ~~KRasG12C in complex with inhibitor~~	+	From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
-	[[Category: ~~Unreleased~~ Structures]]	+	</div>
-	[[Category: Amano, Y]]	+	<div class="pdbe-citations 8x6r" style="background-color:#fffaf0;"></div>
-	[[Category: Tateishi, Y]]	+	== References ==
		+	<references/>
		+	__TOC__
		+	</StructureSection>
		+	[[Category: Homo sapiens]]
		+	[[Category: Large Structures]]
		+	[[Category: Amano Y]]
		+	[[Category: Tateishi Y]]

OCA at 10:12, 3 January 2024

OCA — Wed, 03 Jan 2024 10:12:46 GMT

←Older revision		Revision as of 10:12, 3 January 2024
Line 1:		Line 1:
	'''Unreleased structure'''		'''Unreleased structure'''

-	The entry 8x6r is ON HOLD	+	The entry 8x6r is ON HOLD until Paper Publication

	Authors: Amano, Y., Tateishi, Y.		Authors: Amano, Y., Tateishi, Y.

OCA: Protected "8x6r" [edit=sysop:move=sysop]

OCA — Wed, 29 Nov 2023 10:50:04 GMT

Protected "8x6r" [edit=sysop:move=sysop]

←Older revision

Revision as of 10:50, 29 November 2023

OCA: New page: '''Unreleased structure''' The entry 8x6r is ON HOLD Authors: Amano, Y., Tateishi, Y. Description: KRasG12C in complex with inhibitor Category: Unreleased Structures [[Category: Am...

OCA — Wed, 29 Nov 2023 10:50:02 GMT

New page: '''Unreleased structure''' The entry 8x6r is ON HOLD Authors: Amano, Y., Tateishi, Y. Description: KRasG12C in complex with inhibitor Category: Unreleased Structures [[Category: Am...

New page

'''Unreleased structure'''

The entry 8x6r is ON HOLD

Authors: Amano, Y., Tateishi, Y.

Description: KRasG12C in complex with inhibitor
[[Category: Unreleased Structures]]
[[Category: Amano, Y]]
[[Category: Tateishi, Y]]

8x6r - Revision history

OCA at 10:11, 17 January 2024

OCA at 10:12, 3 January 2024

OCA: Protected "8x6r" [edit=sysop:move=sysop]

OCA: New page: '''Unreleased structure''' The entry 8x6r is ON HOLD Authors: Amano, Y., Tateishi, Y. Description: KRasG12C in complex with inhibitor Category: Unreleased Structures [[Category: Am...