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Updated: Jan 26, 2026
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Efficient and Scalable Production of Full-length Human Huntingtin Variants in Mammalian Cells using a Transient Expression System
Published on: December 10, 2021
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Huntingtin associated protein 1 and its functions
Linda Lin-yan Wu1, Xin-Fu Zhou
1Department of Human Physiology, Flinders University, Adelaide, South Australia, Australia.
Cell Adhesion & Migration
|March 6, 2009
Summary
Huntington disease (HD) involves huntingtin protein (Htt) expansion. Huntingtin associated protein 1 (HAP1), enriched in neurons, may play a key role in HD pathogenesis via intracellular trafficking.
Area of Science:
- Neuroscience
- Molecular Biology
- Genetics
Background:
- Huntington disease (HD) is a neurodegenerative disorder caused by polyglutamine expansion in the huntingtin protein (Htt).
- Intracellular trafficking and vesicular transport are implicated in HD pathogenesis.
- Huntingtin associated protein 1 (HAP1) is a key protein interacting with Htt.
Purpose of the Study:
- To review the role of HAP1 in intracellular trafficking.
- To explore HAP1's potential contribution to the selective neuropathology observed in HD.
- To discuss the involvement of HAP1 and its binding proteins in HD pathogenesis.
Main Methods:
- Literature review of existing studies on HAP1 and Huntington disease.
- Analysis of Htt and HAP1 expression patterns.
- Examination of HAP1's role in intracellular transport mechanisms.
Main Results:
- Htt and HAP1 are involved in intracellular trafficking.
- Polyglutamine expansion in Htt may disrupt vesicular transport.
- HAP1 is specifically enriched in neurons, unlike the ubiquitous Htt.
Conclusions:
- HAP1 dysfunction, due to its neuronal enrichment, could be central to HD's selective neuropathology.
- Further understanding of HAP1 and its interactions is crucial for elucidating HD pathogenesis.
- HAP1 represents a potential therapeutic target for Huntington disease.
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