By:Dr.Paul Tepperman
Dr.Andaleeb Fatima
Lets be honest
there is no such thing as good news about
cancer. The word itself triggers unpleasant images, and just about all of us know of at
least one person who has suffered from one of the many forms of this awful disease.
Todays generation of scientists have the advantage of
combining the knowledge and understanding gained over the years with technology their
predecessors couldnt have even imagined, as well as quantum leaps in science, such
as the mapping of the human genome and the ability to isolate human stem cells. And they
are putting these impressive resources to work. These are just two diverse examples of the
potential breakthroughs being pursued by our researchers. Here are a few of the other hot
trails being followed at Canadas universities and hospitals.
Utilizing new high throughput technology, scientists can screen large numbers of tumour specimens to determine the genetic abnormalities that cause an individuals cancer. The goal is to allow physicians to prescribe treatment specifically designed to treat the genetic abnormality discovered in that persons tumour. New insights into how the immune system defends the body against invaders have generated renewed interest in immunotherapies for cancer. Researchers have been working to target and stimulate cancer cells, marking them for destruction by the bodys immune system.
Researchers are developing designer drugs that will specifically target mutated genes. In theory, such drugs could make malignant cells normal again, or kill them without harming healthy cells. This will benefit the patient by providing more precise, targeted treatment of cancer that is more effective with fewer side effects, resulting in improved quality of life.
Recognition of the unique molecular and genetic alterations associated with various types of cancer offers opportunities for scientists to develop correction or replacement genes. These new therapeutic genes would be inserted into the cancer cells where they would potentially stop or reverse the cancer process.
A new treatment - anti-angiogenic therapy - is showing promise in reducing tumours by blocking off the blood supply that allows the tumour to grow. The starved tumour becomes so weak that it is easily destroyed by radiation or chemotherapy.
Any or all of these may provide important steps towards the
ultimate goal - a cure for cancer in the not too distant future.
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