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Updated: Jun 10, 2026
Derivation of Human Embryonic Stem Cells by Immunosurgery
Published on: December 13, 2007
Derivation of Huntington's disease-affected human embryonic stem cell lines
Cara K Bradley1, Heather A Scott, Omar Chami
1Sydney IVF Stem Cells, Sydney, Australia.
Insights
Researchers developed four human embryonic stem cell (hESC) lines modeling Huntington's disease (HD) by incorporating expanded CAG repeats in the Huntingtin gene. These validated pluripotent stem cell lines are now available for HD research.
Area of Science:
- Stem Cell Biology
- Neurodegenerative Diseases
- Genetics
Background:
- Huntington's disease (HD) is a fatal autosomal dominant neurodegenerative disorder.
- It is caused by an abnormal expansion of cytosine-adenine-guanine (CAG) repeats within the Huntingtin gene (Htt).
- Developing cellular models is crucial for understanding HD pathogenesis and therapeutic strategies.
Purpose of the Study:
- To derive and characterize human embryonic stem cell (hESC) lines modeling Huntington's disease.
- To provide a valuable research tool for investigating HD mechanisms and potential treatments.
- To establish well-characterized, pluripotent HD-hESC lines for the scientific community.
Main Methods:
- Generation of four hESC lines with expanded CAG repeats (≥40) in the Htt gene.
- Derivation of a normal sibling-matched control hESC line.
- Characterization of pluripotency markers (Oct4, SSEA3, Tra-1-81), karyotype, and differentiation potential (teratoma and neuronal differentiation assays).
Main Results:
- Successfully derived four HD-hESC lines (SIVF017-HD, SIVF018-HD, SIVF020-HD, SIVF046-HD) and one control line (SIVF019).
- All lines exhibited normal karyotypes, expressed key pluripotency markers, and maintained pluripotency over multiple passages.
- HD-hESC lines demonstrated differentiation capacity into three germ layers and generated MAP2-positive neuronal cells expressing Htt protein.
Conclusions:
- The established HD-hESC lines are confirmed pluripotent stem cell lines.
- These cell lines serve as a critical resource for studying Huntington's disease.
- Availability of these models will accelerate research into HD pathogenesis and the development of novel therapeutics.
Abstract:
Huntington's disease (HD) is an autosomal dominant neurodegenerative disease caused by an expansion of cytosine-adenine-guanine (CAG) repeats in the Huntingtin gene Htt. To facilitate research into HD, we have derived 4 human embryonic stem cell (hESC) lines containing ≥ 40 CAG repeats in exon 1 of Htt: SIVF017-HD (CAG₄₀), SIVF018-HD (CAG₄₆), SIVF020-HD (CAG₄₈), and SIVF046-HD (CAG₄₅). Additionally, we have derived a normal sibling-matched control for SIVF020-HD, cell line SIVF019. All 5 hESC lines had a normal karyotype, expressed pluripotency markers including Oct4, SSEA3, and Tra-1-81, and could be maintained in culture for multiple (>40) passages. Teratoma studies revealed that the hESC lines were capable of differentiating into cells representative of the 3 germ layers. Furthermore, in vitro neuronal differentiation experiments have confirmed that the hESC lines were able to generate MAP2-positive neuronal cells that express the Htt protein. Combined, these experiments confirm that the cell lines represent pluripotent stem cell lines. These HD-affected hESC lines will be made available to biomedical research laboratories and will provide a valuable tool to investigate the mechanisms and potential treatments for HD.
