Molecular Biology

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    Protocols in Current Issue
    Application of a Modified Smart-seq2 Sample Preparation Protocol for Rare Cell Full-length Single-cell mRNA Sequencing to Mouse Oocytes
    Authors:  Rebecca S. Treger, Scott D. Pope, Xiaojun Xing and Akiko Iwasaki, date: 08/20/2019, view: 255, Q&A: 0
    [Abstract] Endogenous retroviruses (ERV) are transposable retroelements that form ~10% of the murine genome and whose family members are differentially expressed throughout embryogenesis. However, precise regulation of ERV in germ cells remains unclear. To investigate ERV expression in oocytes, we adapted a single-cell mRNA-sequencing library preparation ...
    Axon-seq for in Depth Analysis of the RNA Content of Neuronal Processes
    Authors:  Jik Nijssen, Julio Aguila and Eva Hedlund, date: 07/20/2019, view: 803, Q&A: 0
    [Abstract] Neuronal processes have an RNA composition that is distinct from the cell body. Therefore, to fully understand neuronal biology in health and disease we need to study both somas, dendrites and axons. Here we describe a detailed protocol of a newly refined method, Axon-seq, for RNA sequencing of axons (and dendrites) grown in isolation using single ...
    Enterovirus Competition Assay to Assess Replication Fitness
    Authors:  Valeria Lulla and Andrew E. Firth, date: 05/20/2019, view: 727, Q&A: 0
    [Abstract] In virology the difference between the fitness of two viruses can be determined by using various methods, such as virus titer, growth curve analysis, measurement of virus infectivity, analysis of produced RNA copies and viral protein production. However, for closely performing viruses, it is often very hard to distinguish the differences. In vitro ...
    Preparation of RNA 3’ End Sequencing Libraries of Total and 4-thiouracil Labeled RNA for Simultaneous Measurement of Transcription, RNA Synthesis and Decay in S. cerevisiae
    Authors:  Manfred Schmid, Agnieszka Tudek and Torben Heick Jensen, date: 03/20/2019, view: 1085, Q&A: 0
    [Abstract] Cellular RNA levels are determined by the rates of RNA transcription from the gene template and subsequent RNA stability. Knowledge about both transcription and RNA decay is, therefore, necessary to interpret RNA levels and gene expression, especially during cellular processes where these parameters change. Numerous experimental strategies have ...
    QsRNA-seq: A protocol for Generating Libraries for High-throughput Sequencing of Small RNAs
    Authors:  Alla Fishman and Ayelet T. Lamm, date: 03/05/2019, view: 1401, Q&A: 0
    [Abstract] Small RNAs (sRNAs) are 20-30 nt long non-coding RNA molecules that regulate essentially all cellular processes. Besides being an intensively studied topic in academic research, sRNAs also hold a promise as clinical biomarkers. While the need for expressional profiling of sRNAs is growing, preparation of sRNA libraries for high-throughput ...
    Gene Mapping by RNA-sequencing: A Direct Way to Characterize Genes and Gene Expression through Targeted Queries of Large Public Databases
    Author:  Peter Rotwein, date: 01/05/2019, view: 1487, Q&A: 0
    [Abstract] Recent advances in genomics present new opportunities for enhancing knowledge about gene regulation and function across a wide spectrum of organisms and species. Understanding and evaluating this information at the individual gene level is challenging, and not only requires extracting, collating and interpreting data from public genetic ...
    Preparation of Sequencing RNA Libraries through Chemical Cross-linking Coupled to Affinity Purification (cCLAP) in Saccharomyces cerevisiae
    Authors:  Congwei Wang, Julie Weidner and Anne Spang, date: 10/05/2018, view: 2115, Q&A: 0
    [Abstract] Ribonucleoprotein particles (mRNPs) are complexes consisting of mRNAs and RNA-binding proteins (RBPs) which control mRNA transcription localization, turnover, and translation. Some mRNAs within the mRNPs have been shown to undergo degradation or storage. Those transcripts can lack general mRNA elements, like the poly(A) tail or 5’ cap structure, ...
    In planta Transcriptome Analysis of Pseudomonas syringae
    Authors:  Tatsuya Nobori and Kenichi Tsuda, date: 09/05/2018, view: 2820, Q&A: 0
    [Abstract] Profiling bacterial transcriptome in planta is challenging due to the low abundance of bacterial RNA in infected plant tissues. Here, we describe a protocol to profile transcriptome of a foliar bacterial pathogen, Pseudomonas syringae pv. tomato DC3000, in the leaves of Arabidopsis thaliana at an early stage of ...
    Characterizing the Transcriptional Effects of Endolysin Treatment on Established Biofilms of Staphylococcus aureus
    [Abstract] Biofilms are the most common lifestyle of bacteria in both natural and human environments. The organized structure of these multicellular communities generally protects bacterial cells from external challenges, thereby enhancing their ability to survive treatment with antibiotics or disinfectants. For this reason, the search for new antibiofilm ...
    A Modified Low-quantity RNA-Seq Method for Microbial Community and Diversity Analysis Using Small Subunit Ribosomal RNA
    Authors:  Yong-Wei Yan, Ting Zhu, Bin Zou and Zhe-Xue Quan, date: 05/05/2018, view: 1907, Q&A: 0
    [Abstract] We propose a modified RNA-Seq method for small subunit ribosomal RNA (SSU rRNA)-based microbial community analysis that depends on the direct ligation of a 5’ adaptor to RNA before reverse-transcription. The method requires only a low-input quantity of RNA (10-100 ng) and does not require a DNA removal step. Using this method, we could obtain more ...



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