Search Results - "O'BRYAN, John P"
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Pharmacological targeting of RAS: Recent success with direct inhibitors
Published in Pharmacological research (01-01-2019)“…RAS inhibitors have been developed that target different aspects of RAS function including (1) membrane association; (2) exchange factor binding; (3) effector…”
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Therapeutic targeting of RAS: New hope for drugging the “undruggable”
Published in Biochimica et biophysica acta. Molecular cell research (01-02-2020)“…RAS is the most frequently mutated oncogene in cancer and a critical driver of oncogenesis. Therapeutic targeting of RAS has been a goal of cancer research for…”
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Direct inhibition of RAS: Quest for the Holy Grail?
Published in Seminars in cancer biology (01-02-2019)“…RAS GTPases (H-, K-, and N-RAS) are the most frequently mutated oncoprotein family in human cancer. However, the relatively smooth surface architecture of RAS…”
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Selective and noncovalent targeting of RAS mutants for inhibition and degradation
Published in Nature communications (11-05-2021)“…Activating mutants of RAS are commonly found in human cancers, but to date selective targeting of RAS in the clinic has been limited to KRAS(G12C) through…”
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The P-type ATPase transporter ATP7A promotes angiogenesis by limiting autophagic degradation of VEGFR2
Published in Nature communications (25-05-2021)“…VEGFR2 (KDR/Flk1) signaling in endothelial cells (ECs) plays a central role in angiogenesis. The P-type ATPase transporter ATP7A regulates copper homeostasis,…”
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Inhibition of RAS function through targeting an allosteric regulatory site
Published in Nature chemical biology (01-01-2017)“…A monobody was identified that binds to an allosteric lobe at the α4-β6-α5 interface to block H- and K-RAS signaling and transformation by disrupting RAS…”
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Inhibition of RAS: proven and potential vulnerabilities
Published in Biochemical Society transactions (30-10-2020)“…RAS is a membrane localized small GTPase frequently mutated in human cancer. As such, RAS has been a focal target for developing cancer therapeutics since its…”
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Intersectin scaffold proteins and their role in cell signaling and endocytosis
Published in Biochimica et biophysica acta. Molecular cell research (01-01-2017)“…Intersectins (ITSNs) are a family of multi-domain proteins involved in regulation of diverse cellular pathways. These scaffold proteins are well known for…”
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Targeting the "undruggable" RAS with biologics
Published in Advances in cancer research (01-01-2022)“…RAS proteins represent critical drivers of tumor development and thus are the focus of intense efforts to pharmacologically inhibit these proteins in human…”
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Mutations in the α4-α5 allosteric lobe of RAS do not significantly impair RAS signaling or self-association
Published in The Journal of biological chemistry (01-12-2022)“…Mutations in one of the three RAS genes (HRAS, KRAS, and NRAS) are present in nearly 20% of all human cancers. These mutations shift RAS to the GTP-loaded…”
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Inhibition of RAS-driven signaling and tumorigenesis with a pan-RAS monobody targeting the Switch I/II pocket
Published in Proceedings of the National Academy of Sciences - PNAS (25-10-2022)“…RAS mutants are major therapeutic targets in oncology with few efficacious direct inhibitors available. The identification of a shallow pocket near the Switch…”
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Caveolin-1 stabilizes ATP7A, a copper transporter for extracellular SOD, in vascular tissue to maintain endothelial function
Published in American Journal of Physiology: Cell Physiology (01-11-2020)“…Caveolin-1 (Cav-1) is a scaffolding protein and a major component of caveolae/lipid rafts. Previous reports have shown that endothelial dysfunction in…”
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Biology, pathology, and therapeutic targeting of RAS
Published in Advances in cancer research (2020)“…RAS was identified as a human oncogene in the early 1980s and subsequently found to be mutated in nearly 30% of all human cancers. More importantly, RAS plays…”
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Exploring switch II pocket conformation of KRAS(G12D) with mutant-selective monobody inhibitors
Published in Proceedings of the National Academy of Sciences - PNAS (11-07-2023)“…The G12D mutation is among the most common KRAS mutations associated with cancer, in particular, pancreatic cancer. Here, we have developed monobodies, small…”
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Identification of the nucleotide-free state as a therapeutic vulnerability for inhibition of selected oncogenic RAS mutants
Published in Cell reports (Cambridge) (08-02-2022)“…RAS guanosine triphosphatases (GTPases) are mutated in nearly 20% of human tumors, making them an attractive therapeutic target. Following our discovery that…”
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Neuroblastoma differentiation in vivo excludes cranial tumors
Published in Developmental cell (11-10-2021)“…Neuroblastoma (NB), the most common cancer in the first year of life, presents almost exclusively in the trunk. To understand why an early-onset cancer would…”
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Intersecting pathways in cell biology
Published in Science signaling (14-12-2010)“…The endocytic pathway is involved in activation and inhibition of cellular signaling. Thus, defining the regulatory mechanisms that link endocytosis and…”
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Secreted frizzled related-protein 2 is prognostic for human pancreatic cancer patient survival and is associated with fibrosis
Published in Cancer biomarkers : section A of Disease markers (01-01-2023)“…Pancreatic adenocarcinoma (PDAC) is one of the deadliest cancers, with five-year survival rates of 9%. We hypothesized that secreted frizzled-related protein 2…”
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RAS: Past, Present, and Future
Published 01-02-2022“…Advances in Cancer Research, volume 153 provides a timely review of the biology, biochemistry, and current approaches to therapeutically target the RAS…”
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Emerging roles for intersectin (ITSN) in regulating signaling and disease pathways
Published in International journal of molecular sciences (10-04-2013)“…Intersectins (ITSNs) represent a family of multi-domain adaptor proteins that regulate endocytosis and cell signaling. ITSN genes are highly conserved and…”
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