PRINS detection of 18S rDNA in pig, red fox and Chinese raccoon dog, and centromere DNA in horse.

The study focuses on the use of a DNA probing method known as PRINS (Primed in Situ DNA synthesis) to identify 18S rDNA sequences in multiple animal species. Utilizing specific pairs of primers, the indirect labeling of the centromeric region of horse chromosomes was also achieved.

About PRINS

• PRINS (Primed in Situ DNA synthesis) is a technique used in the study of animal genetics.
• This technique does not need the typical DNA probe preparation that is necessary for Fluorescence in situ hybridization (FISH), which is another commonly used technique in animal cytogenetics.
• The PRINS method leverages specific primers as ‘DNA probes’, a feature that makes it PCR-sensitive, meaning it can amplify and therefore detect small amounts of DNA.

Application of PRINS in the Research

• The researchers used PRINS to identify 18S rDNA loci, or positions, in three different animal species: the domestic pig (Sus scrofa), red fox (Vulpes vulpes), and the Chinese raccoon dog (Nyctereutes procyonoides procyonoides).
• The usage of PRINS in this way demonstrates its functionality in locating specific DNA sequences in animals.

Indirect Labeling on Horse Chromosomes

• The research also inclusive of the application of PRINS in the indirect labeling of the centromeric region of horse (Equus caballus) chromosomes.
• This was performed using two distinct sets of primers complementary to the horse’s centromeric region.
• This achievement further exemplifies the versatility of the PRINS technique in the investigation of chromosome characteristics for both domestic and wild animal genetics and evolution.

Conclusion of the Research

• The study confirms that the PRINS method can indeed be employed as a beneficial tool in comparative genomics and cytogenetics for studying various animal species.
• The technique allows for an efficient and effective approach to investigate chromosomal data substantial to the fields of animal genetics and evolution.