{{'Search' | translate}}
 

Phosphate buffered saline

Company: Thermo Fisher Scientific
Catalog#: 10010001
Bio-protocol()
Company-protocol()
Other protocol()

Generation of Giant Unilamellar Vesicles (GUVs) Using Polyacrylamide Gels
Author:
Date:
2020-11-05
[Abstract]  Giant unilamellar vesicles (GUVs) are a widely used model system for a range of applications including membrane biophysics, drug delivery, and the study of actin dynamics. While several protocols have been developed for their generation in recent years, the use of these techniques involving charged lipid types and buffers of physiological ionic strength has not been widely adopted. This protocol describes the generation of large numbers of free-floating GUVs, even for charged lipid types and buffers of higher ionic strength, using a simple approach involving soft polyacrylamide (PAA) gels. This method entails glass cover slip functionalization with (3-Aminopropyl)trimethoxysilane (APTES) and glutaraldehyde to allow for covalent bonding of PAA onto the glass surface. After polymerization ... [摘要]  [摘要]巨型单层囊泡(GUV)是一种广泛使用的模型系统,其应用范围包括膜生物物理学,药物递送以及肌动蛋白动力学研究。虽然一些协议已经为他们这一代人在最近几年已开发,利用这些T的echniques涉及带电脂质的类型和生理离子强度缓冲液一直没有得到广泛的广告Ø PTED。Thi的方案描述了使用包括聚丙烯酰胺(PAA)凝胶的简单方法,即使对于带电荷的脂质类型和更高离子强度的缓冲液,也产生了大量的自由浮动GUV。此方法需要使用(3-氨基丙基)三甲氧基硅烷(APTES)和戊二醛对玻璃盖玻片进行功能化,以允许将PAA共价键合到玻璃表面上。PAA聚合后,将凝胶真空干燥。随后,将选择的脂质均匀地分散在干燥的凝胶表面上,并且可以使用具有不同离子强度的缓冲液来重新水化凝胶并形成GUV。该协议对于在生理条件下生产大量由不同脂质组成的自由浮动GUV而言是可靠的。它可以方便地用常用的实验室试剂进行。


[背景】虽然温和的水化和电铸是两个巨的最常用的方法单层囊泡(GUV)的形成,只有少数研究,报告其使用带电脂质类型和斯坦因的生理离子强度缓冲液(等人。,2017; ...

Immunoprecipitation of Cell Surface Proteins from Gram-negative Bacteria
Author:
Date:
2017-05-05
[Abstract]  The meningococcus (Neisseria meningitidis) remains an important threat to human health worldwide. This Gram-negative bacterium causes elevated disabilities and mortality in infected individuals. Despite several available vaccines, currently there is no universal vaccine against all circulating meningococcal strains (Vogel et al., 2013). Herein, we describe a new protocol that is capable of identifying only cell surface exposed proteins that play a role in immunity, providing this research field with a more straightforward approach to identify novel vaccine targets. Even though N. meningitidis is used as a model in the protocol herein described, this protocol can be used for any Gram-negative bacteria provided modifications and optimizations are carried out to ... [摘要]  脑膜炎球菌(脑膜炎奈瑟氏球菌)仍然是全球人类健康的重大威胁。这种革兰氏阴性细菌导致感染个体的残疾和死亡率升高。尽管有几种可用的疫苗,目前还没有针对所有循环脑膜炎球菌菌株的通用疫苗(Vogel等人,2013)。在这里,我们描述了一种能够识别仅在细胞表面暴露的蛋白质在免疫中发挥作用的新方案,为该研究领域提供了一种更直接的方法来鉴定新的疫苗靶标。即使使用脑膜炎奈瑟氏球菌作为本文所述方案中的模型,该方案可用于任何革兰氏阴性细菌,提供修饰和优化以使其适应不同的细菌和疾病特征(例如薄膜脆性,生长方法,血清抗体水平,等等)。


背景 尝试开发针对N型的新型疫苗。脑膜炎脑膜炎常常依赖于2D SDS-PAGE(二维十二烷基硫酸钠 - 聚丙烯酰胺凝胶电泳)和蛋白质印迹,随后MS(质谱)(Wheeler等人,2007))。然而,这种方法采用全细胞裂解物,鉴定出不具有疫苗潜力的大量蛋白质(Mendum等人,2009)。因此,我们旨在开发一种能够鉴别可能在免疫中起重要作用的细胞表面暴露蛋白质的方法。简言之,我们的方案包括生长感兴趣的病原体,用免疫个体的血清免疫沉淀表面抗原,并通过液相色谱 - ...

Comments