Biology Research Paper Example | Topics and Well Written Essays - 250 words

Biology - question Paper ExampleThe uses of gene therapy are to replace absent or defective genes, sky inheritable material into cells that speed the destruction of cancer cells, deliver genetic material into cells that cause cancer cells to dispel back to normal cells, deliver genes of bacteria or virus as a form of vaccination, deliver genetic material that either impedes or promotes growth of a new tissue and deliver genetic material that stimulates healing of a damaged tissue (Hecht, 2004).1. Ex vivo gene therapy Here, gene delivery is make in cells after being removed from the body (Hecht, 2004). These cells are grown in the laboratory. The cells are than modified outside the body and then transplanted back into the body. In some research trials, cells from blood or innate(p) marrow are taken out and cultured in a laboratory. Thereafter, the cells are exposed to the virus with the desired gene. The virus infects the cells and transfers the therapeutic genetic material in to the nucleus of the cells. After this, the cells are injected into the patients body by vein.Gene therapy has been utilize to restore vision in dogs. It has also been attempted to transact Lebers congenital amaurosis, a type of inherited childhood blindness caused by a single anomalous gene. Studies have shown that tumor suppressing genes delivered in lipid-based nanoparticles reduces the number and size of human lung cancer tumors in mice. Reengineered lymphocytes have been used to attack cancer cells in metastatic melanoma and myeloid disorders. Other studies have suggested a potential cure for diseases like Hingtintons chorea, severe combined immunodeficiency and sickle cell diseas, thalassemia, cystic fibrosis and some cancers in the future (Genomics.energy.gov). Researchers are also experimenting with introducing a 47th (artificial human) chromosome into target cells. It is expected that this chromosome would