EZ-Magna NuCLEAR^™ RIP（交联法）细胞核RNA结合蛋白免疫沉淀试剂盒

"Gene regulation plays a critical role in complex cellular processes such as development, differentiation, and cellular response to environmental changes. While the regulation of gene expression by transcription factors and epigenetic influences has been well studied over time, pervasive genomic transcription and the role of non-coding RNAs in this process is a rapidly evolving field that remains to be thoroughly explored. Chromatin is typically thought of as a complex of DNA, histones, and non-histone proteins, and RNA. Historically, mRNA was considered to be the only RNA associated with chromatin. These mRNAs would transiently associate with chromatin during transcription then exit the nucleus for translation. However, mounting evidence suggests that various classes of non-coding RNAs (e.g. long non-coding RNAs (lncRNA) small nuclear RNAs (snRNA), enhancer RNAs (eRNA) etc.) are associated with chromatin and likely serve regulatory functions1-3. For the past several years chromatin immunoprecipitation (ChIP) has been used to interrogate association of proteins with genomic DNA sequences. The need to better understand the RNA component of chromatin has driven the development of additional methods to allow analysis and characterization of chromatin associated RNA. One approach used to detect and identify RNA molecules that interact with a specific protein is RNAbinding protein immunoprecipitation (RIP)4. This method allows the immunoprecipitation of protein:RNA complexes that are both nuclear and cytoplasmic using whole cell lysates generated using kit such as the Magna RIP™ RNA Binding Protein Immunoprecipitation Kit."

Cancer is a complex disease manifestation. At its core, it remains a disease of abnormal cellular proliferation and inappropriate gene expression. In the early days, carcinogenesis was viewed simply as resulting from a collection of genetic mutations that altered the gene expression of key oncogenic genes or tumor suppressor genes leading to uncontrolled growth and disease (Virani, S et al 2012). Today, however, research is showing that carcinogenesis results from the successive accumulation of heritable genetic and epigenetic changes. Moreover, the success in how we predict, treat and overcome cancer will likely involve not only understanding the consequences of direct genetic changes that can cause cancer, but also how the epigenetic and environmental changes cause cancer (Johnson C et al 2015; Waldmann T et al 2013). Epigenetics is the study of heritable gene expression as it relates to changes in DNA structure that are not tied to changes in DNA sequence but, instead, are tied to how the nucleic acid material is read or processed via the myriad of protein-protein, protein-nucleic acid, and nucleic acid-nucleic acid interactions that ultimately manifest themselves into a specific expression phenotype (Ngai SC et al 2012, Johnson C et al 2015). This review will discuss some of the principal aspects of epigenetic research and how they relate to our current understanding of carcinogenesis. Because epigenetics affects phenotype and changes in epigenetics are thought to be key to environmental adaptability and thus may in fact be reversed or manipulated, understanding the integration of experimental and epidemiologic science surrounding cancer and its many manifestations should lead to more effective cancer prognostics as well as treatments (Virani S et al 2012).