DNA/RNA Delivery Core

在细胞内特异表达或删除单个基因产物的能力是确定基因功能的一种手段。 然而，与细胞系相比，将DNA或RNA导入正常培养的角质形成细胞是困难的。病毒式传播 递送方法是目前最有效的长期基因过度表达或沉默的方法 角质形成细胞体外培养。最近，已经开发了新的方法来产生用于各种类型递送的病毒 RNA序列，如小发夹(sh-RNA)和微RNA(MiRNA)。由于逆转录病毒和慢病毒具有 由于能够整合到细胞基因组中，它们已经成为传递外源cDNA和 RNA转化为角质形成细胞。我们已经采用、修改和开发了广泛的技术来使用Lenti-和 逆转录病毒在体外感染不同类型的上皮细胞，包括原代和转化的角质形成细胞。我们 产生了含有必要的聚合酶II型或聚合酶III型启动子的病毒表达盒 用于表达基因的cDNA和RNA序列。DNA/RNA交付核心将支持NU SDRC研究人员 并通过提供关于基础知识的服务和/或指导来吸引角质形成细胞生物学领域的新的研究人员 在涉及角质形成细胞的实验中开发和使用siRNA/shRNA/miRNA和cDNA的技术。 该核心还将为NU SDRC的研究人员在使用病毒方法感染角质形成细胞方面提供帮助， 主要关注逆转录病毒和慢病毒。核心将提供所需的专业知识和指导 在试点和可行性项目中提出了成功的基因过度表达/沉默。协助遴选 靶序列和设计的引物以及病毒构建物被认为是最有普遍意义的 国家发改委调查员，因此是这个核心的主要服务。帮助发改委成员排除中的步骤故障 稳定感染细胞培养物的产生对Core来说是一个重要的角色。信息的传播 通过国家发改委核心指导的网站和通讯以及浓缩计划的 系列研讨会将使国家发改委的调查人员能够在最先进的“最先进”的环境下进行实验 水平。

The ability to specifically express or delete single gene products within cells is a means of determining gene function. In contrast to cell lines, however, introduction of DNA or RNA into normal cultured keratinocytes is difficult. Viral delivery methods are currently the most effective means of long-term gene overexpression or silencing in keratinocytes in vitro. Recently, new methods have been developed to generate viruses for delivery of various types of RNA sequences such as small hairpin (sh-RNA) and microRNA (miRNA). Since retroviruses and lentiviruses have the ability to integrate into the cell genome, they have become the preferable tool for delivery of exogenous cDNAs and RNAs into keratinocytes. We have adopted, modified and developed a wide range of techniques to use lenti- and retro-viruses to infect different types of epithelial cells in vitro, including primary and transformed keratinocytes. We generated viral expression cassettes that incorporate polymerase type II or polymerase type III promoters necessary for expression of gene cDNAs and RNA sequences. The DNA/RNA Delivery Core will support NU SDRC researchers and attract new investigators in the area of keratinocyte biology by providing service and/or instruction about basic techniques for the development and use of siRNA/shRNA/miRNA and cDNA in experiments involving keratinocytes. This core will also provide NU SDRC researchers with assistance in the use of viral methods for infecting keratinocytes, primarily focusing on retro- and lentiviruses. The Core will offer the expertise and instruction needed for the successful gene overexpression/silencing proposed in the Pilot and Feasibility projects. Assistance in the selection of target sequences and design of primers as well as viral constructs were indicated to be of greatest general interest for the SDRC investigators, and thus is the major service of this Core. Helping SDRC members troubleshoot the steps in the generation of stably infected cell cultures is an important role for the Core. Dissemination of the information about changes in technology through the SDRC Core-directed Website and Newsletter, and the Enrichment Program's Workshop series will enable SDRC investigators to perform their experiments at the most advanced "state-of-the-art" level.