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Molecular Biology

protocols
Protocol

Using CRISPR-ERA Webserver for sgRNA Design Protocol

Experiment Tags: sgRNA Design, CRISPR-Cas9 System, sgRNA Library, Gene Editing, Gene Regulation

Experiment Summary: In this protocol, we discusse how to design sgRNA sequences and genome-wide sgRNA library using CRISPR-ERA.

protocols
Protocol

Protocol for Construction of Viral Vectors for Cell Type-specific CRISPR Gene Editing in the Adult Mouse Brain

Experiment Tags: CRISPR/Cas9, AAV (AAV), Adult Mouse Brain, Gibson Assembly, Dual-sgRNA

Experiment Summary: In this protocol, we describe a detailed protocol of AAV vector construction for cell type-specific CRISPR gene editing in the adult mouse brain. The method adopts a dual-sgRNA strategy for efficient disruption of the target gene. At first, a few different sgRNAs targeting the same gene are cloned into a plasmid expressing spCas9. After evaluation of the sgRNAs by a T7 endonuclease assay, the two most efficient sgRNAs are cloned in tandem into an AAV vector using the Gibson Assembly method.

protocols
Protocol

Protocols for In vitro Transcription (IVT) and tRNA Binding Assay

Experiment Tags: T-box (T-box), EMSA (EMSA), RNA-RNA Interaction, TRNA (tRNA), In Vitro Transcription

Experiment Summary: This protocol describes the coupling of (i) “live” in vitro RNA transcription with (ii) binding by a radiolabeled, pre-formed tRNA followed by native gel electrophoresis and phosphorimager scan to visualize the complex.

protocols
Protocol

Protocol for Transient yet Robust Expression of Proteins in the Mouse Liver via Intravenous Injection of Lipid Nanoparticle-encapsulated Nucleoside-modified mRNA

Experiment Tags: Nucleoside-Modified mRNA, Lipid Nanoparticle, Liver Regeneration, Protein Expression, Retro-orbital Injection

Experiment Summary: In this protocol, we describe in detail the necessary steps to deliver mRNA-LNP to the murine liver and, following intravenous injection of eGFP mRNA-LNP, verify transfection efficiency using flow cytometry and liver cell specificity using immunofluorescence analyses.

protocols
Protocol

Protocol for Selecting Vaccinia Virus Recombinants Using CRISPR/Cas9

Experiment Tags: Recombinant Virus, Vaccinia Virus, VACV (VACV), CRISPR/Cas9 Selection, Virotherapy, Vaccine Development

Experiment Summary: In this protocol, we describe protocols for the generation and enrichment of recombinant vaccinia viruses using targeted Cas9 as a selection tool. This novel use of Cas9 is a simple addition to current homologous recombination-based methods that are widespread in the field, facilitating implementation in laboratories already working with poxviruses.

protocols
Protocol

Preparation of dsRNA by In Vitro Transcription Protocol

Experiment Tags: dsRNA Synthesis, In Vitro Preparation

Experiment Summary: In this protocol, we describe a simple and widely used in vitro transcription reaction for the preparation of double-stranded RNA using PCR templates. The dsRNA prepared by this method can be used to induce RNA interference in certain cells or tissues.

protocols
Protocol

CRISPRCas9 + AAV-Mediated Intra-Embryonic Gene Knocking Protocol in Mice

Experiment Tags: CRISPR/Cas9 (CRISPR/ Cas9), Adeno-Associated Viral Vector, Trans-Zona Pellucida, Intra-Embryo Genome Editing, Ribonucleoprotein Electroporation, Large Fragment Knock-In

Experiment Summary: In this protocol, we demonstrate a detailed protocol for AAV-mediated intra-embryo knock-in in laboratory mice. This technique does not require either micromanipulation or germline competent pluripotent stem cells.

protocols
Protocol

Protocol of Transient yet Robust Expression of Proteins in the Mouse Liver via Intravenous Injection of Lipid Nanoparticle-encapsulated Nucleoside-modified mRNA

Experiment Tags: Nucleoside-Modified mRNA, Lipid Nanoparticle, Liver Regeneration, Protein Expression, Retro-Orbital Injection

Experiment Summary: In this protocol, we describe in detail the necessary steps to deliver mRNA-LNP to the murine liver and, following intravenous injection of eGFP mRNA-LNP, verify transfection efficiency using flow cytometry and liver cell specificity using immunofluorescence analyses

protocols
Protocol

Improved HTGTS for CRISPR/Cas9 Off-target Detection Protocol

Experiment Tags: CRISPR-Cas9, Off-Target Activity, Chromosomal Translocation, LAM-HTGTS, iHTGTS

Experiment Summary: In this article, we described an improved HTGTS (iHTGTS) method, in which size-selection beads were used to enhance reaction efficiency and a new primer system was designed to be compatible with Illumina Hiseq sequencing. iHTGTS is a powerful method for comprehensively assessing Cas9 off-target effect.

protocols
Protocol

A New Method to Isolate Total dsRNA

Experiment Tags: Diagnosis, RNA Virus, Replicative Intermediate, dsRNA Isolation, dsRNA-Binding Protein

Experiment Summary: In this protocol, we describe a method for dsRNA isolation. Using this method, we can readily isolate viral dsRNA from a small amount of plant material, and can process numerous samples simultaneously.

* For research use only. Not intended for any clinical use.
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