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The Human Genome Project

What would you do if you were given the power to change your genetic code from brown hair to blond?. Man has had this ability through natural selection for some time without knowing it, but in the near future scientist will be able to speed the process of natural selection by changing a persons genes. Scientists have identified what constitutes human DNA located in the nucleus of a cell. The Human Genome Project was established to identify the genes that make us who we are and is now an international organization. The massive task of identifying the numerous gene combinations has created a problem.

In the nucleus are 22 genomes, plus two sex chromosomes which have already been identified. In the 22 genome there are approximately 3 billion base pairs of DNA which contain 50,000 to 100,000 genes, a basic unit of heredity. The identification of these base pairs is the goal of the Human Genome Project, which started in 1990 and whose job it is to identify the letters or chromosomes in DNA. These letter s represent nulcleotides called adenine, guanine, thyamine, and cytosine (or A, C, T, G). (’92 BSCS pg. 1)

The Human Genome Project idea originated in the mid 1980’s and was discussed in the scientific community nd media through the latter part of that decade. In the United States the combined effort of the Department of Energy and the National Institute of Health were involved in the project planning. (The National Center For Genetic Reasearch) The Human Genome Project has several goals including identifying the genes of a human assessing the genes and comparing human DNA to that of bacteria, yeasts, the fruit fly, mice, and the Arabidopis thaliana, a small genome plant that grows rapidly. A major purpose is to determine how evolution proceeds rom lower organisms to humans, and discover why the smaller genomes of animals have less junk or unneeded DNA. Geneticists use two types of maps to characterize the genes they discover–a genetic linkage map and a physical map. A genetic map registers the distance between the fragments of DNA we know according to the frequency with which they are inherited. The physical map measures the actual physical distance between two markers.

Scientists want to map and develop technology for rapid genotyping, plus develop markers that are easy to use as well as generate new mapping techniques. Instrumentation) Scientists can map genes but it is still expensive. One of the ongoing goals of the Human Genome Project is to get the cost of mapping a gene down to 50 cents per base pair. (’92 HSCS pg. 3) The enormous information that is and has been generated by the project is used to link sites together around the world through the internet and now some information can be acessed by the general public. Another of the project goals is to create a sequencing capacity at a collective rate of 50 Mb per year. This is supposed to result in the completion of 80 Mb by the end of FY 1998.

Many people question whether the Human Genome Project is worth the money spent on it and will it be used negatively toward those who have traits that are considered undesirable by insurance companies and other corporations? The HUMAN GENOME ORGANIZATION has a council of scientists and doctors worldwide who meet to discuss the effects of identifying an individual’s genes. In the 1996 Genetics Confidentiality and Nondiscrimmination Act an attempt to addresss this issue as noted in Section 2, ” The DNA molecule contain’s an individual’s genetic information that is uniquely private and inseparate rom one’s identity. Genetic information is being rapidly sequenced and understood.

Genetic information carries special significance. It provides information about one’s family, and more importantly, provides information about one’s self and and one’s self perception. ” Genetic information has been misused, harming individuals through stigmitization and discrimination. The potential for misuse is tremendous as genetics transcends medicine and has the potential to penetrate many aspects of life including health and life insurance, finance, and education.

Experts advocate that genetic information should not be collected, stored, analyzed, nor disclosed without the individual’s authorization. Current legal protections for genetic information is, however, inadequate. Uniform rules for collection, storage, and use of DNA samples are needed to protect individual privacy and prevent discrimination while permitting legitimate medical reasearch. The report further states that the reading of a minors DNA should be only with parental or legal guardian consent and only if the analysis benefits the individual. The need for legislation on reading genes ust be addressed prior to the final research breakthrough on this controversial issue in order to avoid discrimination against and protection of individuals. Nineteen states have already enacted laws that ban genetic discrimination. The positive uses, however, for the Human Genome Project far outweigh the negative. While the Genome Project has major work yet to be done much has already been accomplished. A significant discovery is that over half of the genes sequenced were previously unknown even though mass genetic mapping had taken place over the last decade.

The project revealed that yeast has 12 million base pairs and 6,000 genes. The yeast gene has already provided scientists with a valuable insight into medical disorders such as cancer, neurological problems, and skeletal disorders. The project was completed some two years ahead of schedule because of mass automation and the fact that over a 100 laboratories in the United States, Canada, European Union, the United Kingdom, and Japan participated in the research. The genes were sequenced 55 % by the Europeans, 17 % by the Sanger Centre, 15 % by WUSL, 7 % Stanford Universioty, 4 % by MCGill

University in Canada, 2 % by the Institute of Physical and Chemical ReasEarch in Japan. The start of the Yeast Genome hunt began in 1950 when Robert Mortimer tried to map all of the genes in the DNA of the yeast organism. Then in the 1980’s Maynard Olson made a physical map of the genes of yeast by cloning overlapping DNA fragments. The project spent some 30 million dollars to finish the study. ( Yeast Genome Sequenced) The Human Genome Project is a continuing quest and will be supported for several years until it completes the entire ene sequence for humans and compares it to the genes of the other organisms. The planned goals until 1998 include completing a sequence tagged site physical of the human genome at a resolution of 100Kb. The organisms that are supposed to be identified are a map of the mouse at a resolution of 300Kb, Escheria Coli and Drosophilia melanogaster and bringing C. elegans to near completion . Comparisions of mice DNA with selected portions of human DNA are areas of high biological interest.

The organiztion will continue to identify issues and policies surrounding the ethical end of the genome debate, foster greater cceptance of human and genetic variation, enhance and expand public knowledge and professional education, diversify and expand the transfer of technology both into and out of centers of genome reasearch. The price of reasearch is increasing as more and more labs become invol ved with the project. The projects goals are projected to cost almost 200 million annually in comparison with 170 million for the FY 1994. The knowledge and potential that the Human Genome Project will produce are astronomical. Identification of inherited diseases could be found in the fetus and then changed to both save lives and revent devasting diseases. The Human Genome Project is, and will, be an ongoing project for many years to come. Today we know just one-tenth of what research will reveal in a short few years yet we already have the knowledge to change and alter genes. Currently, this power is limited but in the near future scientist will have control over a factor originally associated with only natural reproduction. Undoubtly, man will continue to be progressive and aggressive in this field of research. And who knows–maybe the reality of Jurassic Park literally is only a few years away.

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Home » The Human Genome Project

The human genome project

Human Genome Project

Scientists are taking medical technology to new heights as they race to map all of the genes in our body. There are about 100,000, in the 23 chromosomes of the human body. In doing this they hope that they can understand the basis of the genes and maybe even develop methods of treating certain genetic diseases, such as Alzheimer’s and Muscular Dystrophy. The scientists identify the DNA sequence of someone with the disease and then compare it to a person without the disease. By doing this they can recognize which gene is abnormal and causes the disease. This entire process is called the “Human Genome Project” and is being done in more than 200 laboratories, with more and more labs joining each year. Most of these labs are located in France and the United States. The project started in 1990 and was predicted to take 15 years and cost $3 billion. It costs the United States about $200 million per year. The $200 million per year has only covered about 60% of the annual need. This has created some funding problems for the project. On the brighter side the project has made huge steps in gene mapping and continues to improve every year.

Researchers have successfully located the gene and the DNA sequence that causes Huntington’s Disease. It is located on Chromosome 4. Scientists have created a genetic test, which can determine whether someone carries these genes or DNA pattern. Every child of someone with Huntington’s Disease has a 50% chance of inheriting the gene, which then inevitably leads to the disease. Because of the high amounts of money it costs for treatment of this disease insurance companies see this test as an opportunity to screen potential clients for the probability of such diseases. This would allow them to deny certain people insurance if they are at high risk. This puts the people being screen in a position where they might not be able to receive treatment for their illnesses because they won’t be able to get insurance. This is morally wrong and also violates the patients right to privacy. This information must be safeguarded from insurance companies so they will not be able to discriminate against someone with “bad genes”. These actions also bring up several ethical questions. “Does genetic testing constitute an invasion of privacy, and would it cause discrimination against those born with genetic deficiencies? Would the parental testing lead people to have more abortions? There are many genetic advancements to come in the future. One area that will benefit from the Human Genome Project is genetic engineering. It too, may have many unethical aspects depending on how the information is used and what is created.

Gene Therapy is one aspect that has greatly benefited from the gene mapping done in the Human Genome Project. It uses genetic engineering to treat genetic disorders. Gene mapping does this by introducing genes into existing cells to prevent or cure diseases. Most of the methods that have been developed are in experimental stages and have not been approved by the FDA. An example of gene therapy is the use of Herpes to treat a brain tumor. Scientists take a Herpes gene and splice it in to a nonvirulent virus.
Then the virus is placed in a lab animal to reproduce itself, and after reproduction, it is then injected into the human’s brain tumor. Because Viruses and liposomes have and uncanny ability to navigate through cell membranes it invades the tumor cells. Thus, the Herpes enzyme will make the tumor vulnerable to drugs used to cure herpes, killing the tumor, the virus and all the animal cells used to manufacture the virus.

With these and many other ideas springing out from the medical world, many researchers are optimistic about the results of their research. There is also a direct correlation of the sequencing of genes and the production of drugs to treat certain diseases that have strands of defective genes, such as Alzheimer’s. If scientists could locate the genes that cause these type of diseases then drugs can be developed to effect the specific location of the gene. The director of the gene therapy program at the University of Southern California, Dr. W French Anderson states, “Twenty years from now, gene therapy will have revolutionized medicine. Virtually every disease will have it as one of its treatments.” Such an impact would take much longer with trial and error tactics, rather than methodically mapping out the blueprint for the body.

This research is going to continue at a blazing speed. What people need to keep in mind is that the results of this research need to be use to benefit all of society, not just the people who are extremely wealthy. Also, the decision of being tested for certain genetic diseases should lie with that individual. Some people will not be able to handle the fact that they are destine to have a certain disease or genetic flaw.

Some states have already enacted law guarding the rights of individuals being genetically tested. The problem with these laws is that they only cover certain procedures not all of the testing. One solution to stop genetic testing by insurance companies is to make them give everyone in the country the same rate. This way they could not discriminate against people and it would put everyone on a level playing field. Another solution is to keep the information completely confidential. In doing this everyone will get a chance to get the proper treatment for whatever disease that they will inherit. Once genetic testing is mastered and becomes available for everyone insurance companies will start requiring people to be tested before they are given coverage. The government needs to put the necessary laws in place to stop this from happening. Just because an insurance company does not want to lose money on people who have “bad genes” does not mean they should be banned from coverage. What society and the people involved in Genetic testing, genetic mapping, and genetic engineering must remember is that the information they discover should be used to help mankind, not to profit economically.

Bibliography

Bloch, Hanna; Dan Cray and Christine Sadlowski: “Keys to the Kingdom” and “Do You Want to Know If the News Is Bad,” Time Special Issue (vol. 148 No. 14, Fall 1996) pp. 24-29.

Duby, Jean-Jacques: “Genetic Discrimination,” Science (vol. 270, Nov. 24, 1996) pg. 1282-3.

Hudson, Kathy L.: “Genetic Discrimination and Health Insurance: an Urgent Need for Reform,” Science (v. 270 Oct. 20, 1995) p 391-3.

http://www.nhgri.nih.gov/

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