In a laboratory, researchers modified the genetics of the white blood cells. “Gene therapy is a technique used to cure genetic defects or genetic disorders by removing the faulty gene or inserting a wild type one to the genome.” Notably, it should be kept in mind that it shouldn’t harm the patient. This is the most widely used method of gene therapy. A gene is a sequence of DNA — pictured above. Gene therapy alters the genetic instructions within an individual’s cells. Many adenovirus vectors have been developed for use in cancer treatment and have shown a significant therapeutic impact. Instead, a carrier called a vector is genetically engineered to deliver the gene. It is suitable to treat diseases caused by a mutation that stops a gene from producing a functioning product, such as a protein. Gene transfer experiments are restricted to live human embryo because of the ethical issues associated with it. If a mutated gene causes a necessary protein to be faulty or missing, gene therapy may be able to introduce a normal copy of the gene to restore the function of the protein. The first attempt to use gene therapy to treat live humans in clinical trials began in the late 1980s. Similarly, Gene therapy (also called human gene transfer) is a medical field which focuses on the utilization of the therapeutic delivery of nucleic acids into a patient's cells as a drug to treat disease. Finally, gene therapy can be used to express entirely foreign genes in cells that alter their function and/or survival. A variety of efforts are underway to apply gene therapy to cancer treatment. The new gene produces a functioning product at sufficient levels to replace the protein that was originally missing. The 1990s… In this 1990 report from NCI in Bethesda, scientists removed white blood cells from patients with advanced melanoma. The viral vectors used in gene therapy can infect the host cells and produce a strong immune response against it. Gene augmentation therapy is used to add a functioning gene into a cell with a non-functioning copy of that gene. Gene augmentation therapy. This therapy adds DNA containing a functional version of the lost gene back into the cell. This is used to treat diseases caused by a mutation that stops a gene from producing a functioning product, such as a protein. Gene therapy techniques are applied with various strategies based on the need for function. It is specifically used to treat patients who are suffering from diseases due to defective genes. Gene therapy is a method of treatment. It involves the insertion of a foreign gene into the cancer cells through the use of viral vectors. Furthermore, the transgene is not expressed all the time. These viruses usually belong to a group of viruses called as adenovirus. 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