一氧化氮(NO)或更常见的三氧化二氮(N 2 O 3)荧光探针使科学家们能够研究这种信号分子在许多生理过程中的作用。为了改善其他探针的局限性,我们开发了基于2-氨基-3'-二烷基氨基联苯核心的荧光探针家族。该核与N 2 O 3缩合形成苯并[ c ]喹啉结构,将分析物掺入新形成的荧光团中,这导致产物荧光几乎没有初始探针的背景贡献。我们改变了核心中的取代基,以优化探针与N的反应性2 O 3及其cinnoline产物的荧光波长和亮度。然后将排名靠前的候选基因应用于培养的细胞,以验证它们是否可以对细胞环境中的NO作出反应,并将性能最高的NO 530与“金标准”商业探针DAF-FM在巨噬细胞衍生的细胞中进行比较线,RAW 264.7,刺激产生NO。与DAF相比,NO 530对NO表现出相似或更好的灵敏度和更高的选择性,使其成为各种应用中NO追踪的诱人的潜在替代品。
Light-controlled NO delivery systems promise new applications in phototherapies. For this purpose, a ruthenium nitrosyl complex [(2)Ru(NO)(Cl)] with the novel ligand N,N′-(1,2-phenylene)bis(1-methyl-1H-imidazole-2-carboxamide) (2) has been synthesised and characterised in detail. The photoactive Ru–NO}6 nitrosyl released NO in DMSO upon exposure to low-intensity UV-A light (λ = 366 nm). In order to create an applicable system the water-insoluble [(2)Ru(NO)(Cl)] was embedded into poly(L-lactide-co-D/L-lactide) nanofibrous non-wovens by electrospinning. Exposure of a 25 wt% non-woven of [(2)Ru(NO)(Cl)] to UV-A light resulted in a continuous release of NO into an aqueous solution. The cytoxicity of the non-woven against 3T3 mouse fibroblasts was very low.
光控 NO 输送系统有望在光疗中得到新的应用。为此,我们合成了一种亚硝基钌配合物[(2)Ru(NO)(Cl)],并对新型配体 N,N′-(1,2-亚苯)双(1-甲基-1H-咪唑-2-甲酰胺)(2) 进行了详细表征。光活性Ru-NO}6亚硝基在 DMSO 中暴露于低强度 UV-A 光(λ = 366 纳米)时释放出 NO。为了创建一个适用的系统,通过电纺丝将不溶于水的[(2)Ru(NO)(Cl)]嵌入到聚(L-乳酸-co-D/L-乳酸)纳米纤维非织造布中。将 25 wt%的[(2)Ru(NO)(Cl)]无纺布暴露在紫外线 A 光下,NO 会持续释放到水溶液中。该无纺布对 3T3 小鼠成纤维细胞的细胞毒性非常低。
FLUORESCENT NITRIC OXIDE PROBES AND ASSOCIATED METHODS
申请人:BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM
公开号:US20130302903A1
公开(公告)日:2013-11-14
Nitric oxide probes comprising a compound represented by Formula, I, II, III, IV, V, VI or a combination thereof are provided. Methods of using these nitric oxide probes to detect nitric oxide are also provided.
Diagnostic devices with modifiable hydrophobic surfaces
申请人:Siemens Healthcare Diagnostics Inc.
公开号:US10449536B2
公开(公告)日:2019-10-22
A diagnostic device 10 for screening for a target analyte in a sample is provided. The diagnostic device 10 comprises a substrate 12 and a hydrophobic material 20 disposed on the substrate. The hydrophobic material 20 is selected to be converted from the hydrophobic material 20 to a hydrophilic material 22 upon contact with a conversion component within or derived from a sample introduced to the device 10.
DIAGNOSTIC DEVICES WITH MODIFIABLE HYDROPHOBIC SURFACES
申请人:Siemens Healthcare Diagnostics Inc.
公开号:US20170246627A1
公开(公告)日:2017-08-31
A diagnostic device
10
for screening for a target analyte in a sample is provided. The diagnostic device
10
comprises a substrate
12
and a hydrophobic material
20
disposed on the substrate. The hydrophobic material
20
is selected to be converted from the hydrophobic material
20
to a hydrophilic material
22
upon contact with a conversion component within or derived from a sample introduced to the device
10.