Researchers at McGill University have developed a new, low-cost method to build DNA nanotubes block by block – a breakthrough that could help pave the way for scaffolds made from DNA strands to be used in applications such as optical and electronic devices or smart drug-delivery systems.
Nanoscale “cages” made from strands of DNA can encapsulate small-molecule drugs and release them in response to a specific stimulus, McGill University researchers report in a new study.
Recent technological developments in genomics have revealed a large number of genetic influences on common complex diseases, such as diabetes, asthma, cancer or schizophrenia. However, discovering a genetic variant predisposing to a disease is only a first step. To apply this knowledge towards prevention or cure, including tailoring treatment to the patient’s genetic profile –also known as personalized medicine – we need to know how this genetic variant affects health.
What allows certain plants to survive freezing and thrive in the Canadian climate, while others are sensitive to the slightest drop in temperature? Those that flourish activate specific genes at just the right time -- but the way gene activation is controlled remains poorly understood.
Injuries that result in chronic pain, such as limb injuries, and those unrelated to the brain are associated with epigenetic changes in the brain which persist months after the injury, according to researchers at McGill University. Epigenetics explores how the environment – including diet, exposure to contaminants and social conditions such as poverty – can have a long-term impact on the activity of our genes.
Early life experience results in a broad change in the way our DNA is “epigenetically” chemically marked in the brain by a coat of small chemicals called methyl groups, according to researchers at McGill University. A group of researchers led by Prof. Moshe Szyf, a professor of Pharmacology and Therapeutics in the Faculty of Medicine, and research scientists at the Douglas Institute have discovered a remarkable similarity in the way the DNA in human brains and the DNA in animal brains respond to early life adversity. The finding suggests an evolutionary conserved mechanism of response to early life adversity affecting a large number of genes in the genome.