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National Ataxia Foundation

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DNA Repair

Elongating expansions in HD and SCA1

Written by Dr. Marija Cvetanovic  Edited by Dr. Larissa Nitschke Expanded CAG repeats are the cause of Huntington’s disease (HD) and several spinocerebellar ataxias (SCAs). Longer inherited CAG expansions correlate with the earlier disease onset and worse symptoms. We know from past research that these expansions are unstable and become longer Read More…

Failure to repair DNA damage may be linked to SCA3

Written by Dr. Ambika Tewari Edited by Dr. Maria do Carmo Costa Mutations in Ataxin-3 protein prevent the normal functioning of a DNA repair enzyme leading to an accumulation of errors Cells are bombarded by thousands of DNA damaging events each day from internal and external sources. Internal sources include Read More…

Spotlight: The Truant Lab

Principal Investigator: Dr. Ray Truant Location: McMaster University, Hamilton, Ontario, Canada Year Founded: 1999 What disease areas do you research? SCA1 SCA7 Huntington’s Disease Parkinson’s Disease What models and techniques do you use? Human cell biology High content screening Biophotonics Microscopy Research Focus What is your research about? We are Read More…

Snapshot: What is poly-ADP-ribose (PAR)?

DNA repair is an important topic when talking about of neurodegenerative disorders. The amount of biochemical stress the brain experiences increases naturally as we age. Some connections have been made between the amount of stresses on the brain and the age people develop neurodegenerative disorders. Many of these natural stresses Read More…

Snapshot: What is Non-Homologous End Joining?

What is DNA damage? As we go through life, our DNA undergoes a lot of stress, which can ultimately lead to DNA damage. The different stressors that can cause DNA damage are environmental factors such as UV light, radiation, and certain toxins. Additionally, DNA damage can be caused by metabolic Read More…

La huntingtine: un nouvel acteur dans l’arsenal de la réparation de l’ADN

Écrit par Dr. Ambika Tewari, Edité par Dr. Mónica Bañez-Coronel, Traduction française par: L’Association Alatax, Publication initiale: 22 novembre 2019 Des mutations dans la protéine huntingtine altèrent la réparation de l’ADN, causant des dommages importants à l’ADN et une expression génétique modifiée. Notre génome regroupe l’intégralité de notre matériel génétique, qui Read More…

Huntingtin: a new player in the DNA repair arsenal

Written by Dr. Ambika Tewari Edited by Dr. Mónica Bañez-Coronel Mutations in the Huntingtin protein impair DNA repair causing significant DNA damage and altered gene expression Our genome houses the entirety of our genetic material which contains the instructions for making the proteins that are essential for all processes in Read More…

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