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    • 13. 发明专利
    • Differential identification of pancreatic cysts
    • AU2012339835B2
    • 2016-01-28
    • AU2012339835
    • 2012-11-12
    • UNIV JOHNS HOPKINS
    • VOGELSTEIN BERTKINZLER KENNETH WPAPADOPOULOS NICKOLASWU JIANHRUBAN RALPHMAITRA ANIRBANDAL MOLIN MARCO
    • C12Q1/68C12N15/11
    • More than 2% of adults harbor a pancreatic cyst, a subset of which progress to invasive lesions with lethal consequences. To assess the genomic landscapes of neoplastic cysts of the pancreas, we determined the exomic sequences of DNA from the neoplastic epithelium of eight surgically resected cysts of each of the major neoplastic cyst types: serous cystadenomas (SCAs), intraductal papillary mucinous neoplasms (IPMNs), mucinous cystic neoplasms (MCNs) and solid pseudo-papillary neoplasms (SPNs). SPNs are low-grade malignancies, and IPMNs and MCNs, but not SCAs, have the capacity to progress to cancer. We found that SCAs, IPMNs, MCNs, and SPNs contained 10 = 4.6, 27 = 12, 16 = 7.6, and 2.9 = 2.1 somatic mutations per tumor, respectively. Among the mutations identified, E3 ubiquitin ligase components were of particular note. Four of the eight SCAs contained mutations of VHL, a key component of the VHL ubiquitin ligase complex that has previously been assoCiated both with renal cell carcinomas, SCAs, and other neoplasms. Six of the eight IPMNs and three of the eight MCNs harbored mutations of RNF43, a gene coding for a protein with intrinsic E3 ubiquitin ligase activity that has not previously been found to be genetically altered in any human cancer. The preponderance of inactivating mutations in RNF43 unequivoCally establish it as a suppressor of both IPMNs and MCNs. SPNs contained remarkably few genetic alterations, but always contained mutations of CTNNB1, previously demonstrated to inhibit degradation of the encoded protein (ß-catenin) by E3 ubiquitin ligases. These results highlight the essential role of ubiquitin ligases in these neoplasms and have important implications for the diagnosis and treatment of patients with cystic tumors.
    • 14. 发明专利
    • WATER-DISPERSIBLE ORAL, PARENTERAL, AND TOPICAL FORMULATIONSFOR POORLY WATER SOLUBLE DRUGS USING SMART POLYMERIC NANOPARTICLES
    • CA2665343A1
    • 2008-06-19
    • CA2665343
    • 2007-10-05
    • UNIV JOHNS HOPKINS
    • FELDMANN GEORGBISHT SAVITAMAITRA ANIRBAN
    • A61K47/30
    • Polymeric nanoparticles with a hydrophobic core and a hydrophilic shell a re formed from: 1) N-isopropyl acrylamide (NIPAAM), at a molar ratio of abou t 50% to about 90%, and preferably 60% for specific delivery routes such as oral or parenteral; either water-soluble vinyl derivatives like vinylpyrolid one (VP) or vinyl acetate (VA), or water insoluble vinyl derivatives like me thyl methacrylate (MMA) or styrene (ST), at a molar ratio of about 10% to ab out 30%;, and acrylic acid (AA), at a molar ratio of about 10% to about 30%. The formed nanoparticles may be optionally surface functional using reactiv e groups present in AA, including PEGylation, or conjugation of moieties suc h as chemotherapeutics, contrasting agents, antibodies, radionucleides, liga nds, and sugars, for diagnostic, therapeutic, and imaging purposes. The poly meric nanoparticles are preferably dispersed in aqueous solutions. The polym eric nanoparticles incorporate one or more types of medicines or bioactive a gents in the hydrophobic core; on occasion, the medicine or bioactive agent may be conjugated to the nanoparticle surface via reactive functional groups . The polymeric nanoparticles are capable of delivering the said medicines o r bioactive agents through oral, parenteral, or topical routes. The polymeri c nanoparticles allow poorly water soluble medicines or bioactive agents, or those with poor oral bioavailability, to be formulated in an aqueous soluti on, and enable their convenient delivery into the systemic circulation.
    • 20. 发明专利
    • Differential identification of pancreatic cysts
    • AU2012339835A1
    • 2014-06-12
    • AU2012339835
    • 2012-11-12
    • UNIV JOHNS HOPKINS
    • VOGELSTEIN BERTKINZLER KENNETH WPAPADOPOULOS NICKOLASWU JIANHRUBAN RALPHMAITRA ANIRBANDAL MOLIN MARCO
    • C12Q1/68C12N15/11
    • More than 2% of adults harbor a pancreatic cyst, a subset of which progress to invasive lesions with lethal consequences. To assess the genomic landscapes of neoplastic cysts of the pancreas, we determined the exomic sequences of DNA from the neoplastic epithelium of eight surgically resected cysts of each of the major neoplastic cyst types: serous cystadenomas (SCAs), intraductal papillary mucinous neoplasms (IPMNs), mucinous cystic neoplasms (MCNs) and solid pseudo-papillary neoplasms (SPNs). SPNs are low-grade malignancies, and IPMNs and MCNs, but not SCAs, have the capacity to progress to cancer. We found that SCAs, IPMNs, MCNs, and SPNs contained 10 = 4.6, 27 = 12, 16 = 7.6, and 2.9 = 2.1 somatic mutations per tumor, respectively. Among the mutations identified, E3 ubiquitin ligase components were of particular note. Four of the eight SCAs contained mutations of VHL, a key component of the VHL ubiquitin ligase complex that has previously been assoCiated both with renal cell carcinomas, SCAs, and other neoplasms. Six of the eight IPMNs and three of the eight MCNs harbored mutations of RNF43, a gene coding for a protein with intrinsic E3 ubiquitin ligase activity that has not previously been found to be genetically altered in any human cancer. The preponderance of inactivating mutations in RNF43 unequivoCally establish it as a suppressor of both IPMNs and MCNs. SPNs contained remarkably few genetic alterations, but always contained mutations of CTNNB1, previously demonstrated to inhibit degradation of the encoded protein (ß-catenin) by E3 ubiquitin ligases. These results highlight the essential role of ubiquitin ligases in these neoplasms and have important implications for the diagnosis and treatment of patients with cystic tumors.