Stem Cells : Promises for future and its Controversies

Stem Cells : Promises for future and its Controversies

The Human embryonic stem cells given a boom to the animal research on the top gear and it has shown wide aspects of studies. The human embryonic stem cells can now be grown and transformed into specialized cells and yield information about the complex events that occur during human development with characteristics consistent with cells of various tissues such as muscles or nerves through cell culture. A main area of this work is to identify how undifferentiated stem cells become the differentiated cells that form the tissues and organs. The human embryonic cell lines and autologous embryonic stem cells generated through therapeutic cloning promises a great deal in the future time to come. Scientists know that turning genes on and off its central to this process to produce a wide range of tissues for repair. The technology has already answered many of the medical problems such as myocardial infarction, broad spectrum of oncology and birth defects of genetical or hereditary problems, alzheimer's and parkinson diseases. The transformation always gives a basic understanding of the genetic and molecular controls of these processes may yield information about the system which imply to the reason of many diseases arising and new strategies for various therapy. The controlling cell proliferation, differentiation and delivery of stem cells to the tissues nowadays stem cells are directly injected into the blood stream without any targeted delivery techniques must be devised to introduce these factors safely into the cells and control the processes that are induced by these factors requires additional basic research. Human stem cells could also be used to test new drugs. The researchers are developing much more effective, reduce the invasiveness and the risk to patient and new medications could be tested for safety on differentiated cells generated from human pluripotent cell lines. Various cancer cell lines are the areas used to screen potential anti-tumor drugs. The availability of pluripotent embryonic stem cells would allow drug testing in a wider range of cell types. The vast potential application of human embryonic stem cells is the generation of cells and tissues that could be used for various cell-based therapies. The donated organs and tissues are used to replace the destroyed tissue. Stem cells, directed to differentiate into specific cell types, offer the possibility of a renewable source of replacement cells and tissues to treat diseases including, heart disease, stroke, spinal cord injury, diabetes, osteoarthritis, rheumatoid arthritis and alzheimer diseases.

The controversies related to the embryonic stem cell research argue continued as soon as it started due to reproductive cloning and can fundamentally devalue human life. The pro-life movement argues that a human embryo is already a human life that is entitled toprotection. The ensuing debate has prompted authorities around the world to seek regulatory frameworks and highlighted the fact that stem cell research represents social and ethical challenges. The controversy over stem cells is from the destruction of fertilized human eggs when harvesting embryonic stem cells and manipulating them in the laboratory and the same tissue should be re-transplanted into the patient which may lead to the loss of the function hence, therefore killing the human child that the egg could have developed. The last US president Bush has also supported the problem and he quoted it on August 11, 2004 that in his first term, he has worked towards balancing the ethics and the science, by allowing federal support for roughly seventy embryonic stem cell lines. That was produced before he was in office and banning further funds. The morality of embryonic stem cell collection is a big question mark on the ethical grounds. The stem cells have other challenges like lack of research funds, transplant rejection and chances of unpredictable differentiation and developing tumors but I feel that the debate will continue because it has to respond with the bioethical issues dealing with human life's and the nature will find its own way for the future which is hidden.

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