RNA Lab

In situ hybridization experiments for cellular RNA are used to localize specific mRNAs in mixed cell populations and tissues.

This method of staining is based on the fact that tissue structures bind differently to different dyes. The dye hematoxylin stains basophilic structures blue-vi

Chordoma-associated gene identification and screening assays for (1) molecular mechanisms of chordoma (2) gene diagnosis (3) gene therapy.

Toluidine blue is one of the commonly used synthetic dyes, belonging to the quinone imine dyes, which generally contain two chromophores, an amine group and a q

Staining of cells allows (1) coloring of cells for easy observation and (2) detection of apoptotic cells.

Animal tissues and cells are the most commonly used experimental materials in molecular biology research, a typical mammalian cell contains about 105 ug RNA, wh

In situ hybridization of cellular RNA is used to localize specific mRNAs in mixed cell populations and tissues. Frozen section is a method of slicing tissue aft

The use of magnetic microspheres instead of transferring fiber cords as a medium is more commonly used and has been commercialized.

Storing RNA in formamide has many advantages over storing it in water or ethanol: (1) formamide will protect the RNA from degradation by RNA enzymes, and RNA st

Methylene blue-mediated photocrosslinking reactions are a complement to UV crosslinking reactions. Methylene blue belongs to the phenothiazine group of dyes. Du

Most mammalian messenger RNAs (mRNAs) carry a poly(A)+ tail, and Poly(A)+-carrying RNAs can be isolated from total RNA using this protocol.

The RNA Immunoprecipitation-Randomized Polymerization Chain Reaction method can be used to identify RNA components in intracellular RNP complexes. This experime

In the nucleus, the transcription products of RNA polymerase II bind to a large number of different types of nuclear precursor mRNA/mRNA-binding proteins, heter

This experiment was derived from "RNA Laboratory Guidebook", edited by Xiaofei Zheng.

With the development of in vitro molecular experimental techniques, many DNA molecules with different catalytic functions have been discovered in recent years.

The use of cND A microarray technology can be used to (1) analyze and detect the expression of thousands of genes in parallel; (2) play an important role in the

A precursor is a macromolecular ribonucleoprotein complex that splices mRNA precursors in the nucleus of eukaryotic cells. It consists of five snRNPs and a larg

Although chromosomes can be prepared from other cells, human peripheral blood leukocytes are the easiest to synchronize, allowing high-resolution analysis of th

It is typical for splicing reactions to use nuclear extracts, i.e., S100 extracts complementing partially purified fractions of SR proteins or crude extracts, m

The spliceosome is a ribonucleoprotein body (RNP) composed of RNA and proteins, which removes introns from precursor mRNA during the splicing process of precurs

Since there are many sources of RNA species, there are different methods of extraction and preparation, generally phenol method, detergent method and guanidine

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Since there are many sources of RNA species, there are different methods of extraction and preparation, generally phenol method, detergent method and guanidine

Fungal RNA extraction can be: (1) used in the study of fungal RNA interference mechanism; (2) used in cDNA library construction and other studies; (3) used in t

This method is a simple and effective way to isolate RNA from oocytes, fertilized eggs and fetal cells of frogs, sea urchins, periphyton, worms and flies.

The following method is a simple and effective method for purifying cytoplasmic RNA from tissue culture cells, which appeared at an earlier stage of RNA isolati

Whole blood RNA extraction can be used (1) to study the mechanism of RNA interference, etc.; (2) as a template for reverse transcription; and (3) for other stud

Northern blot is one of the most rigorous methods to study gene expression, which can quantitatively analyze the expression abundance of a specific mRNA in tiss

The construction of siRNA expression vectors can be applied to: (1) as a powerful tool for gene function analysis in the post-genomic era; (2) genomics and cell

Viral RNA extraction can be (1) used for the study of RNA viral replication mechanisms, (2) used for reverse genetics studies, and (3) used for other studies in

This experiment is mainly used to determine the integrity of RNA extracts.

After the mRNA of the target gene has been identified by in vitro cell-free translation, the first strand of cDNA can be synthesized in the steps described in t

Whole blood contains nucleated leukocytes, so it is easy to extract RNA from blood, but red blood cells are rich in ribonuclease, so it is difficult to isolate

Formalin-fixed, paraffin-embedded tissues from the pathology department can be used for RNA expression analysis. RNA isolated from biopsy, surgical, and cadaver

Because some tissues (e.g., pancreas and uterus) contain high concentrations of endogenous RNAases, more care must be taken in purifying tissue-derived RNA.

SDS lyses the cells and extracts the total RNA by acid phenol graded extraction, which is a suitable method for treating cells with relatively low mRNA content

Rat liver was homogenized, the supernatant was centrifuged, and RNA was extracted with a mixture of phenol and m-cresol. rRNA and mRNA were separated in the pre

RNA preparation by guanidine thiocyanate extraction and cesium chloride centrifugation is suitable for isolation of RNA from cells with difficult separation of

Some RNA transcripts require an m7 G(5')Ppp(5')G cap at the 5' end, and they have higher translational efficiency only in cell-free extracts or in African Xenop

RNA Laboratory Techniques Manual (Molecular Cloning - Laboratory Guide Series)

T4 DNA Ligase joins double-stranded complexes, including RNA-DNA heteroduplexes and RNA-RNA heteroduplexes, defectively.

Intramolecular labeling of RNA during transcription, post-transcriptional labeling of the 5' end of RNA using T4 polynucleotide kinase and labeling of the 3' en

Deoxyribonucleases are oligodeoxyribonucleotides consisting of about three dozen deoxyribonucleotides, which are easy to prepare and convenient to use, and are

T4RNA ligases have been used to generate many site-specific modified RNAs, especially oligonucleotide-modified and tRNA-modified with antisense codon tRNAs.In a

Nuclear runoff (runoff) analysis can be used to examine the transcriptional efficiency of specific genes in isolated cell nuclei. For runoff analysis, the nucle

Ribosyl C2'-methoxy modification of the nucleotides at the 2 5' ends. Amplification of DNA by PCR with modified primers still reduces N+l activity, and since PC

The RNA template is used to obtain DNA by reverse transcription, which is then used to replicate and infect cells.

Nuclease is a useful tool for obtaining site-specific cleavage products of long fragments of RNA for the study of RNA modification, for modification site analys

There are two strategies for in vitro experiments; one is to co-incubate a plasmid containing the target gene at the Po ly( A) locus with cell-free extracts to

The mRNA extracted from mammalian cells or produced by in vitro transcription of cloned DNA can be translated in cell-free extracts to synthesize proteins, whic

The African Xenopus oocyte in vitro translation system is capable of sustained modification and processing of most exogenous mRNAs due to its ability to translo

The S30 family of extracts is divided into three categories: the E. coli S30 Extract System for in vitro translation of circular DNA, the E. coli S30 Extract Sy

Wheat germ extract in vitro translation system for efficient translation of mRNA in viruses and eukaryotic cells in a heterogeneous cell-free system

Translation of poliovirus and hepatitis C virus mRNA with mammalian cell S10 extracts.

The primer extension method can be used for RNA mapping and RNA 5' halo. In this method, an excess of a 5' end-labeled single-stranded RNA primer is hybridized

Methylmercury hydroxide reacts with the imine bonds on uracil and guanine in RNA, which are involved in Watson-Crick base pairing. Therefore, methylmercury hydr

Nucleic acids are accurately quantified using spectrophotometry because this method does not destroy the structure and also allows for sample recovery. RNA has

SI nuclease is an endonuclease that was isolated from Aspergillus oryzae. It can degrade single-stranded nucleic acids but not double-stranded nucleic acids. In

Agarose gel electrophoresis is commonly used to isolate RNA prior to Northern blotting.

Spot and slit hybridization analysis of RNA enables the qualitative or semi-quantitative determination of RNA by directly spotting RNA samples onto nitrocellulo

Under slightly acidic conditions, the two acetaldehyde groups of glyoxal interact with the imino group of guanosine to form a cyclic compound, which inhibits th

TNT 耦联网织红细胞裂解物系统乂可以分为：TNTT7 系统、TNTSP6 系统和 TN 下 PCR 系统。 The TNTT7 system translates proteins from both linear and circular DNA, the S

The PAT method [ PCR poly(A) test ] can quickly and sensitively analyze specific mRNA from total RNA and quantitatively estimate the length of RNA poly(A) tails

The 3'-5' exonuclease activity of the large fragment of DNA polymerase I (Klenow enzyme) was utilized to convert the 3' sticky ends into flat ends. The method i

The typical recovery rate of the RNA standard transcription system is lugRNA/ug plasmid DNA, which can be increased to 5~l0ug RNA/ug plasmid DNA by using the fo

The best method for recovering RNA fragments from poly(lactonamide) gels is the crush-and-soak method, which provides excellent recovery of high-purity single-s

RNA Laboratory Techniques Manual (Molecular Cloning - Laboratory Guide Series)

Fe(II)-EDTA is capable of catalyzing the breakage of RNA or DNA and is a complementary method to RNase protection analysis. It has the advantage that there is l

Photochemical cross-linking technology is an effective means to study the interaction between RNA and protein in nuclear enameled egg complexes. The basic princ

In situ hybridization (ISH), also known as hybrid histochemistry or hybridization for cytology, is a technique that enables morphological demonstration of the p

In addition to the familiar mRNA, there are also a large number of non-coding RNA (ncRNA) that do not code for proteins. Non-coding RNA plays a very important r

SELEX screening experiments of single-stranded DNA libraries can be used for (1) in vitro diagnostics; (2) in vivo therapeutics, etc.

The splicosome is the catalytic unit for excising introns from primary transcripts in eukaryotes. The splicosome contains four small nuclear ribonucleoprotein p

RNA Laboratory Techniques Manual (Molecular Cloning - Laboratory Guide Series)

RNA Laboratory Techniques Manual (Molecular Cloning - Laboratory Guide Series)

RNA can also be synthesized in vitro by RNA polymerases (e.g., T3, T7, or SP6 ) using linear DNA as a template. This experiment is based on the "RNA Laboratory

SELEX screening experiments of randomized RNA libraries can be used for (1) in vitro diagnosis; (2) in vivo therapy, etc.

RNA Laboratory Techniques Manual (Molecular Cloning - Laboratory Guide Series)

Good quality total RNA can be extracted from yeast cells.

Precursor mRNA ( pre-mRNA ) splicing factors The SR (serine/argininc rich) family of proteins is an important player in the assembly of splices onto precursor m

Cytosolic extracts can be used for splicing of precursor mRNAs. The S100 extract, although it includes many splicing factors, does not have splicing activity be

In cells, protein-RNA binding is involved in a variety of physiological regulation and developmental processes. Direct protein-RNA interactions occur during mRN

The splicing of eukaryotic pre-mRNA is a two-step process, in which an intron is cut from the precursor and two exons are joined together to form the mature mRN

Guanidine hydrochloride rapidly inhibits RNAase activity while lysing cells, and this method utilizes this feature to isolate Drosophila RNA.

Changes in the environment of the cell, the state of the replication cycle, and the state of differentiation can cause changes in the half-life of some mRNAs. T

By purification on DEAE cellulose columns, small amounts of DNA, large molecular RNA, proteins, polysaccharides and other impurities were removed, and finally a

Total RNA was extracted from a variety of different fungi.

RNA Laboratory Techniques Manual (Molecular Cloning - Laboratory Guide Series)

The binding of proteins to DNA and RNA can be determined using nitrocellulose membrane binding, which is based on the fact that most proteins bind to nitrocellu

This method allows for the preparation of RNA from 100 Drosophila or approximately 2g of Drosophila embryos.

The polyacrylamide coelectrophoresis (PACE ) assay is a relatively recently developed method for quantitatively analyzing the interaction of proteins and peptid

Oligonucleotide-targeted RNase II digestion assay is a method to analyze RNA protein complexes (RNP, ribonucleoprotein particles), both for crude extracts and p

RNA footprinting and modification interference analysis are techniques used to study RNA-protein interactions.The principles of RNA sequencing and its structura

Northwestern screening of protein expression libraries is performed by constructing IPTG-inducible fusion protein expression libraries (the N-terminus of the fu

The yeast three-hybrid system can be used to analyze protein-RNA interactions. In the yeast three-hybrid system, RNA-protein interactions lead to transcription

The method of immobilizing cDNA library-expressed proteins on nitrocellulose or nylon membranes and then screening them with labeled RNA is the most commonly us

RNA Laboratory Techniques Manual (Molecular Cloning - Laboratory Guide Series)

Differential display polymerase chain reaction (PCR) can facilitate the identification of new molecular markers associated with contamination exposure in many s

RNA Laboratory Techniques Manual (Molecular Cloning - Laboratory Guide Series)

The simplicity of the gel reiardadon assay (also known as mobthty shift assay) method, its sensitivity, and its ability to be quantified have made it widely use

Post-transcriptional gene silencing (PTGS) is known as RNA interference (RNAi), whereby double-stranded RNA (dsRNA) consisting of positive-sense and negative-se

Phage display technology is to fuse an exogenous gene with the surface protein gene of the phage, and the corresponding exogenous protein will be expressed on t

A bacterial anti-transcription termination detection system for studying peptide-RNA interactions by screening recombinant cDNA libraries. This experiment was d

An RNA-protein molecular complex analysis method based on the photochemical reaction of psoralen enables the analysis of the topological conformation of RNA-pro

Blot hybridization is the process of binding a nucleic acid fragment to be tested to a certain solid phase support and then hybridizing it with a labeled probe

Binding of heterologous RNA-BPs to target RNAs in E. coli inhibits translation of target genes. This method has been successfully applied to the study of a vari

Design Short Hair Clip RNA