Abstract
The primed in situ (PRINS) labeling technique allows a rapid and specific labeling of human chromosomes in situ. This method is based on annealing of specific oligonucleotide primers and subsequent primer extension by a Taq DNA polymerase. We have developed a PRINS protocole for the cytogenetic analysis of somatic hybrid cell lines. Painting of human chromosomes is performed using Alu specific primers. Individual human chromosomes are identified using chromosome-specific alpha-satellite primers. The method was successfully tested to 3 different human-hamster hybrid cell lines. This approach provides an interesting alternative to classical cytogenetic and in situ hybridization techniques for the characterization of the human content of hybrid cell lines.
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