Mouse Tissue Genotyping
Mouse Tissue Genotyping - Related Videos
08:27
Mouse Genotyping
0 Views •
2023
Even though the human genome was mapped over 10 years ago, scientists are still far from understanding the function of every human gene! One way to evaluate how a gene functions is to disrupt the sequence encoding it and then evaluate the impact of this change (the phenotype) on the animal’s biology. This approach is commonly used in the mouse (Mus musculus), since it shares a high degree of genetic similarity with humans. To track the animals bearing genetic changes over several generations,...
12:39
Rapid Genotyping of Mouse Tissue Using Sigma's Extract-N-Amp Tissue PCR Kit
0 Views •
Cited by 4 •
2008
The complete genotyping of a mouse tail sample, including tissue digestion and PCR readout, is done in one and a half hours using Sigma's SYBR Green Extract-N-Amp Tissue PCR kit.
08:23
SNP Genotyping
0 Views •
2023
Single nucleotide polymorphisms, or SNPs, are the most common form of genetic variation in humans. These differences at individual bases in the DNA often do not directly affect gene expression, but in many cases can still be useful for locating disease-associated genes or for diagnosing patients. Numerous methodologies have been established to identify, or “genotype”, SNPs.JoVE’s introduction to SNP Genotyping begins by discussing what SNPs are and how they can be used to identify...
11:00
Genotyping of Plant and Animal Samples without Prior DNA Purification
0 Views •
Cited by 14 •
2012
The Direct PCR approach presented here facilitates PCR amplification directly from small amounts of unpurified plant and animal tissue.
13:06
Pyrosequencing: A Simple Method for Accurate Genotyping
0 Views •
Cited by 22 •
2008
Pyrosequencing(R) is one of the most thorough yet simple methods to date used to analyze polymorphisms. This method has led to rapid and efficient single-nucleotide polymorphism evaluation including many clinically relevant polymorphisms. The technique and methodology of Pyrosequencing is explained.
FAQs
PCR provides the amplification step that makes a selected genomic region or transgene-specific marker easier to detect. During the reaction, PCR copies the target sequence, producing DNA products that can be examined by gel electrophoresis or another DNA analysis method. This links a tissue-derived DNA sample to a specific genetic test, supporting identification of engineered alleles in experimental mice.
Interpretation depends on which amplified products are detected after analysis. A knockout, knock-in, or transgenic allele can be assessed by targeting its relevant sequence or marker, then examining the resulting PCR products. Comparing those results among animals allows researchers to identify genotype categories such as homozygous and heterozygous, which guides breeding and experimental selection.
Tail biopsies and ear punches can both supply tissue for this analysis. After collection, genomic DNA is extracted from the sample and used for the molecular assay. These sampling options support genotype-based decisions in colony management and experiments, allowing researchers to assess an individual mouse’s genetic status using a small tissue source.
A basic workflow begins with obtaining a small tissue sample and extracting genomic DNA. The extracted material is then used in PCR to amplify either a target sequence or a transgene-specific marker. Finally, researchers distinguish the resulting products with gel electrophoresis or another DNA analysis method, producing genotype information for animal selection.
It is particularly useful for colony management and for selecting animals whose genetic status matches a study’s needs. Results can identify mice suitable for breeding or experimentation and can confirm knockout, knock-in, or transgenic alleles. This makes the assay a practical connection between molecular genetic information and decisions about which animals enter a research workflow.
Genotype results help researchers connect an animal’s genetic status with its observed phenotype. In biology, that relationship is especially relevant to studies of development, disease, and gene function. Confirming the intended knockout, knock-in, or transgenic allele strengthens the basis for interpreting experimental animals and for relating genetic changes to study outcomes.