Chromosomal Evolution of the PKD1 Gene Family in Primates
Author Information
Author(s): Kirsch Stefan, Pasantes Juanjo, Wolf Andreas, Bogdanova Nadia, Münch Claudia, Pennekamp Petra, Krawczak Michael, Dworniczak Bernd, Schempp Werner
Primary Institution: Institut für Humangenetik und Anthropologie, Universität Freiburg
Hypothesis
How did the human situation regarding the PKD1 gene and its pseudogenes originate phylogenetically?
Conclusion
PKD1 has undergone recent amplification in hominid evolution, with gene conversion events likely occurring within the PKD1 family members of humans and chimpanzees.
Supporting Evidence
- Distinct single signals map in subtelomeric chromosomal positions orthologous to the short arm of human chromosome 16.
- Six pseudogenes are identified in both human and chimpanzee, while only a single-copy gene is present in orangutan.
- Gene conversion events may have occurred within the PKD1 family members of human and chimpanzee.
Takeaway
Scientists studied a gene related to kidney disease in different primates to understand how it evolved. They found that this gene has changed a lot in humans and our close relatives.
Methodology
Comparative FISH-mapping of human PKD1 genomic BAC and cDNA clones to chromosomes of various primate species and a dog as a non-primate outgroup.
Limitations
The resolution of the FISH technique may limit the detection of duplications or amplifications of the PKD1 gene.
Participant Demographics
Blood samples were obtained from various primate species including chimpanzees, gorillas, orangutans, and others.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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