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Gene Therapy is hope or disasterfor homo Being?&9674Introductiondesoxyribonucleic acid determines the placement of amino acids according to DNA sequences. A specific chain of amino acids composes a specific protein that plays the demand functions in the bodies. The defect of the factor, however, results in producing wrong protein as a result, approximately part of the bodies abnorm bothy works compared to that of other normal bodies. This is called ?gGenetic Disorder?h. The scientists analyze about brokertic disorder and suggested an alternative for genetic disorder called ?gGene Therapy?h. Recently, gene therapy is useful to cure other diseases such as a crab louse or other.(http//www.ornl.gov/sci/techresources/Human_Genome/medicine/genetherapy.shtmlhttp//www.asgt.org/ )&9674History of Gene TherapyDavid suffered from a rare transmittable disease known as adenosine deaminase deficiency (ADA). He spent all his life in a germ-free plastic bubble, because gene causes a drop of enzyme that helps immune system to fight disease from outside. In 1984, he original a bone marrow transplant. Unfortunately, cells from donator?fs marrow attacked his body. As a result, he was died after a year. This event was a big issue at that time and scientists studied gene therapy to stop this bad event. In 1989, at first, W.French Anderson and a team at the National Institutes of Health gained permission for investigate to inject gene into human beings. In 1900, at first, he utilise gene therapy to 4 year girl who suffered from adenosine deaminase deficiency (ADA). He extracted T- lymphocytes from her bloodstream and injected gene-corrected T lymphocytes to her with a normal gene function for ADA therefore he repeated a few times more. After a year, she lives as a normal kid. Her treatment was successful. In 1991, 9 days old girl was applied to this gene therapy and her treatment was also successful.(http//www.frenchanderson.org/ invoice/history.asp, Mapping our genes by Lois Wingerson, Medical Dilemma by Margaret O.Hyde& Elizabeth H. Forsyth. M.D.)&9674Gene TherapyToday, radical theory of gene therapy is that normal gene is inserted into genome to replace disease caused gene. The gene by itself, however, is al virtually impossible to get the target cell. To deliver gene successfully, a carrier called vector is necessary and computer virus is good for delivering gene, because virus genetically approaches human genes. Virus, however, can have a potential cyanogenic or respond a massive immune system. In fact, round people died because of that. For this reason, scientists tried to find replacement of virus as vector. The most common virus for vector is adenovirus that causes cold.