{{'Search' | translate}}
 

Thermal cycler

Company: Bio-Rad Laboratories
Catalog#: T100
Bio-protocol()
Company-protocol()
Other protocol()

In vitro STING Activation with the cGAMP-STINGΔTM Signaling Complex
Author:
Date:
2021-02-05
[Abstract]  Activating the STING (stimulator of interferon genes) signaling pathway via administration of STING agonist cyclic GMP-AMP (cGAMP) has shown great promise in cancer immunotherapy. While state-of-the-art approaches have predominantly focused on the encapsulation of cGAMP into liposomes or polymersomes for cellular delivery, we discovered that the recombinant STING protein lacking the transmembrane domain (STINGΔTM) could be used as a functional carrier for cGAMP delivery and elicit type I IFN expression in STING-deficient cell lines. Using this approach, we generated anti-tumoral immunity in mouse melanoma and colon cancer models, providing a potential translatable platform for STING agonist-based immunotherapy. Here, we report the detailed in vitro STING activation ... [摘要]  [摘要]通过给予STING激动剂环状GMP-AMP(cGAMP)激活STING(干扰素基因的刺激物)信号通路已显示出在癌症免疫治疗中的广阔前景。尽管目前最先进的方法主要集中在将cGAMP封装进脂质体或聚合物小体中以进行细胞递送,但我们发现缺少跨膜结构域(STINGΔTM)的重组STING蛋白可以用作cGAMP递送的功能载体。在STING缺陷型细胞系中诱导I型IFN表达。使用这种方法,我们在小鼠黑素瘤和结肠癌模型中产生了抗肿瘤免疫力,为基于STING激动剂的免疫疗法提供了潜在的可翻译平台。在这里,我们报告与cGAMP-STINGΔTM复合物的详细体外STING激活方案,以帮助研究人员进一步开发这种方法。该协议还可以轻松扩展到与STING激活相关的其他应用程序,例如控制各种类型的感染。


[背景]在过去的二十年中,STING(干扰素基因的刺激物)信号传导途径已成为免疫系统的关键特征,并有望成为针对病毒和细菌感染,自身免疫性疾病和癌症的治疗靶标。因此,递送STING激动剂以增强免疫应答已经成为学术机构和制药公司的极大兴趣领域(Ohkuri等人,2017)。尽管现有的努力主要集中在开发合成运载工具上(Shae et ...

Dual sgRNA-based Targeted Deletion of Large Genomic Regions and Isolation of Heritable Cas9-free Mutants in Arabidopsis
Author:
Date:
2020-10-20
[Abstract]  CRISPR/Cas9 system directed by a gene-specific single guide RNA (sgRNA) is an effective tool for genome editing such as deletions of few bases in coding genes. However, targeted deletion of larger regions generate loss-of-function alleles that offer a straightforward starting point for functional dissections of genomic loci. We present an easy-to-use strategy including a fast cloning dual-sgRNA vector linked to efficient isolation of heritable Cas9-free genomic deletions to rapidly and cost-effectively generate a targeted heritable genome deletion. This step-by-step protocol includes gRNA design, cloning strategy and mutation detection for Arabidopsis and may be adapted for other plant species. [摘要]  [摘要] CRISPR/Cas9由基因特异性单导RNA(sgRNA)引导的系统是一种有效的基因组编辑工具,如编码基因中少部分碱基的删除。然而,大区域的靶向缺失产生功能缺失等位基因,这为基因组基因座的功能解剖提供了一个直接的起点。我们提出了一个简单易用的策略,包括一个快速克隆双sgRNA载体,有效分离可遗传的Cas9游离基因组缺失,以快速且经济有效地产生靶向遗传基因组缺失。该方法包括拟南芥的gRNA设计、克隆策略和突变检测,可适用于其他植物。

[背景] ...

Comments