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Updated: Aug 5, 2026
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Microtubule Plus-End Dynamics Visualization in Huntington's Disease Model based on Human Primary Skin Fibroblasts
Published on: January 8, 2022
HDDF2-A Novel Patient-Derived Fibroblast Line from Huntington's Disease with Prominent Cellular Senescence and polyQ
Polina Parfenova1, Nina Kraskovskaya1, Anna Koltsova1
1Institute of Cytology Russian Academy of Science, 194064 Saint-Petersburg, Russia.
Biomedicines
|July 28, 2026
Summary
A new Huntington
Area of Science:
- Neuroscience
- Genetics
- Cell Biology
Background:
- Patient-derived cell lines are crucial for modeling neurodegenerative diseases like Huntington's disease (HD).
- Establishing cell models that reflect donor-specific age-related and genomic features is essential for late-onset disorders.
Purpose of the Study:
- To establish and characterize HDDF2, a novel dermal fibroblast cell line from an HD patient.
- To provide a relevant cellular model for studying Huntington's disease pathogenesis.
Main Methods:
- Dermal fibroblasts were isolated from an HD patient with 46 CAG repeats in the HTT gene.
- Cells were assessed for senescence markers (p16, lamin B1, SA-β-Gal activity, proliferation) and polyglutamine (polyQ) aggregation.
- Fibroblasts were directly reprogrammed into induced neurons.
Main Results:
- HDDF2 fibroblasts displayed a significant senescence-associated phenotype, including increased p16, reduced lamin B1, elevated SA-β-Gal activity, and decreased proliferation.
- Polyglutamine deposition was concentrated in senescent cells, with distinct localization patterns compared to proliferating cells.
- HDDF2 cells successfully underwent direct reprogramming into induced neurons.
Conclusions:
- HDDF2 is a well-characterized, patient-specific cellular model for Huntington's disease.
- The co-occurrence of polyglutamine deposition and cellular senescence in HDDF2 cells offers insights into HD pathogenesis.
- This cell line is a valuable resource for investigating the interplay between aging and Huntington's disease.
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