开发植入式医疗设备,体内诊断和微阵列的关键步骤是有效防止非特异性蛋白质从血浆或血清等现实世界复杂介质中的吸附。在这项工作中,两性离子聚(羧基甜菜碱丙烯酰胺)(polyCBAA)仿生材料被用于创建具有超低结垢背景的独特生物识别涂层,从而能够对血浆中的蛋白质进行灵敏而特异的检测。确定了用于polyCBAA涂层中的羧酸酯基团的表面活化,蛋白质固定和表面失活的条件。使用抗体功能化的polyCBAA表面平台,使用灵敏的表面等离子体共振(SPR)传感器检测血浆中的目标蛋白。从100%人血浆中直接检测出选择性蛋白,具有非凡的特异性和敏感性。在功能化polyCBAA表面上的总非特异性蛋白质吸附非常低(对于未稀释的血浆,<3 ng / cm(2))。由于非特异性蛋白质吸附的显着减少,因此有可能在未稀释的血浆中监测抗原-抗体相互作用的动力学。使用polyCBAA候选癌蛋白标记候选物的功能化效果和检测特性与传统
POLYMER COMPOSITIONS CONTAINING GRAFTED POLYMERIC NETWORKS AND PROCESSES FOR THEIR PREPARATION AND USE
申请人:Johnson & Johnson Vision Care, Inc.
公开号:US20180037690A1
公开(公告)日:2018-02-08
Provided are polymer compositions made by a process comprising: (a) providing a first reactive composition containing: (i) a polymerization initiator that is capable, upon a first activation, of forming two or more free radical groups, at least one of which is further activatable by subsequent activation; (ii) one or more ethylenically unsaturated compounds; and (iii) a crosslinker; (b) subjecting the first reactive composition to a first activation step such that the first reactive composition polymerizes therein to form a crosslinked substrate network containing a covalently bound activatable free radical initiator, (c) combining the crosslinked substrate network with a second reactive composition containing one or more ethylenically unsaturated compounds; and (d) activating the covalently bound activatable free radical initiator of the crosslinked substrate network such that the second reactive composition polymerizes therein with the crosslinked substrate network to form a grafted polymeric network and a byproduct polymer. Also provided are precursors to the polymer compositions, processes for preparation of the polymer compositions, and methods of using the polymer compositions, for instance in medical devices.
Nanoparticles zwitterionic polymers grafted thereto or grafted therefrom, and methods for making and using the nanoparticles. Zwitterionic nanogels, and methods for making and using the nanogels.
Hierarchical films having ultra low fouling and high recognition element loading properties
申请人:University of Washington through its Center for Commercialization
公开号:US10031138B2
公开(公告)日:2018-07-24
Hierarchical films with structurally regulated functionalities through the integration of two-dimensional and three-dimensional structures to achieve ultra low nonspecific binding and high loading of molecular recognition elements, and methods for making and using the films.
Ophthalmic devices derived from grafted polymeric networks and processes for their preparation and use
申请人:Johnson & Johnson Vision Care, Inc.
公开号:US10961341B2
公开(公告)日:2021-03-30
Provided are ophthalmic devices comprised of a reaction product of a composition comprising: (i) a crosslinked substrate network containing covalently bound activatable free radical initiators; and (ii) a grafting composition containing one or more ethylenically unsaturated compounds. Also provided are processes for making ophthalmic devices.
本发明提供了一种眼科设备,该设备由一种组合物的反应产物组成,该组合物包括:(i) 含有共价结合的可激活自由基引发剂的交联基底网络;和 (ii) 含有一种或多种乙烯基不饱和化合物的接枝组合物。此外,还提供了用于制造眼科设备的工艺。
Polymer compositions containing grafted polymeric networks and processes for their preparation and use
申请人:Johnson & Johnson Vision Care, Inc.
公开号:US11021558B2
公开(公告)日:2021-06-01
Provided are polymer compositions made by a process comprising: (a) providing a first reactive composition containing: (i) a polymerization initiator that is capable, upon a first activation, of forming two or more free radical groups, at least one of which is further activatable by subsequent activation; (ii) one or more ethylenically unsaturated compounds; and (iii) a crosslinker; (b) subjecting the first reactive composition to a first activation step such that the first reactive composition polymerizes therein to form a crosslinked substrate network containing a covalently bound activatable free radical initiator, (c) combining the crosslinked substrate network with a second reactive composition containing one or more ethylenically unsaturated compounds; and (d) activating the covalently bound activatable free radical initiator of the crosslinked substrate network such that the second reactive composition polymerizes therein with the crosslinked substrate network to form a grafted polymeric network and a byproduct polymer. Also provided are precursors to the polymer compositions, processes for preparation of the polymer compositions, and methods of using the polymer compositions, for instance in medical devices.