Related Experiment Video
Updated: Oct 1, 2025
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Preparation of Primary Myogenic Precursor Cell/Myoblast Cultures from Basal Vertebrate Lineages
Published on: April 30, 2014
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Evolutionary insights into primate skeletal gene regulation using a comparative cell culture model
Genevieve Housman1, Emilie Briscoe1, Yoav Gilad1,2
1Section of Genetic Medicine, Department of Medicine, University of Chicago, Chicago, Illinois, United States of America.
Plos Genetics
|March 9, 2022
Summary
Researchers developed an in vitro model using human and chimpanzee stem cells to study skeletal gene regulation. This approach identified hundreds of differentially expressed genes, offering insights into primate skeletal evolution.
Area of Science:
- Evolutionary biology
- Genomics
- Stem cell biology
Background:
- Skeletal trait evolution in primates is influenced by genetic and environmental factors.
- Functional genomic studies of skeletal tissues are challenging, especially across species.
- Existing methods limit comparative analysis of gene regulation in primate skeletal development.
Purpose of the Study:
- To establish an in vitro system for comparative functional genomics of primate skeletal cell types.
- To investigate interspecific gene regulatory differences between human and chimpanzee skeletal development.
- To identify genes potentially contributing to skeletal trait divergence.
Main Methods:
- Differentiated human and chimpanzee induced pluripotent stem cells (iPSCs) into mesenchymal stem cells (MSCs) and then osteogenic cells.
- Utilized single-cell RNA sequencing on over 100,000 cells across differentiation stages and replicates.
- Applied topic modeling to analyze gene expression patterns and identify differentially expressed genes (DEGs).
Main Results:
- Most examined genes showed conserved expression patterns between humans and chimpanzees.
- Hundreds of genes were differentially expressed between species during osteogenic differentiation.
- Differentially expressed genes were enriched for functions relevant to skeletal trait development, with increasing divergence during cell maturation.
Conclusions:
- The developed in vitro model effectively captures interspecific gene regulatory differences in skeletal cell differentiation.
- Identified DEGs provide potential molecular bases for skeletal trait variations between humans and chimpanzees.
- This model system is valuable for future research into the genetic underpinnings of primate skeletal evolution.
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