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Embryonic stem cell research pros and cons
Embryonic stem cell ethics debate
Embryonic stem cell ethics debate
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Embryonic stem cells can be defined as stem cells that are derived from the undifferentiated inner mass cells of a human embryo. In other words, the cells are derived from the inner mass of the blastocyst. Blastocyst can be referred as an early stage embryo. This means that the embryonic stem cell is grown from cells that are found in the embryo and are a few days old. Typically, the embryo that provides the embryonic stem cells is four or five days old. In addition, most of the embryonic stem cells are obtained from embryos that develop from eggs that have been fertilized by in-vitro for infertile couples. These excess fertilized eggs are donated for research with the permission of the donors. Normally the embryos are not eggs that have been fertilized within a woman’s body. Embryonic stem cells have the capacity to divide for long periods and sustain their ability to make all cell types with a certain organism (Sidhu 7). Embryonic stem cells are distinguished by two unique properties. These are their pluripotency and their capacity to replicate indefinitely (Wai Feng Lim). Embryonic stem cells are pluripotent. This entails that they [cells] are able to differentiate themselves into all derivatives of the three germ layers (Wai Feng Lim). These include ectoderm, mesoderm and endoderm. Meaning, the cells can be in a position to develop into more than 200 cell types of the adult body, as long as the cells are denoted to do so. Furthermore, pluripotency helps to distinguish embryonic stem cells from adult stem cells. On the other hand, the cells can generate all cell types in the body while adult stem cells are multipotent. This means that they [cells] can produce only a limited number of cell types. Additionally, due to embryon... ... middle of paper ... ...c Stem Cell Research?" Annenberg Classroom. N.p., n.d. Web. 30 Nov. 2013. . Sidhu, Kuldip S. Frontiers in Pluripotent Stem Cells Research and Therapeutic Potentials: Bench-to-bedside. Dubai, United Arab Emirates: Bentham Science, 2012. Internet resource. Steinhoff, Gustav. Regenerative Medicine: From Protocol to Patient. Dordrecht: Springer, 2011. Print. Turksen, Kursad. Embryonic Stem Cells: Methods and Protocols. Totowa, N.J: Humana Press, 2002. Internet resource. Wai Feng Lim. "Hematopoietic Cell Differentiation from Embryonic and Induced Pluripotent Stem Cells." Stem Cell Research & Therapy 4.3 (2013): 71. Academic Search Complete. Web. 14 Nov. 2013. .
A person's individuality begins at conception and develops throughout life. These natural developments can now be changed through genetically engineering a human embryo. Through this process, gender, eye and hair color, height, medical disorders, and many more qualities can be changed. I believe genetically engineering a human embryo is corrupt because it is morally unacceptable, violates the child's rights, and creates an even more divided society.
Stem cells have been under intense research because of their remarkable potential to develop into many different cell types within the body. Under certain experimental conditions, they can be induced to become tissue specific cells with special functions. When the human stem cell was first discovered, researchers primarily utilized embryonic stem cells (ESCs), undifferentiated cells derived from a 5-day preimplantation embryo known to develop into cells and tissues of the three primary germ layers (Rippon and Bishop 2004). Because the extractions of human ESCs result in the destruction of an embryo, stem cell research has been highly controversial. However, recent advances have allowed the creation of induced pluripotent stem cells (iPSCs), somatic (adult) cells that have been “reprogrammed” into a pluripotent state. (Takahashi et al. 2007). In this paper, I propose that human induced pluripotent stem cells be more strongly considered as a model for studying human development. Strengths and weaknesses of using the hiPSCs as a model, as well as the methods of inducing pluripotency will be discussed and reviewed.
Stem cells are pluripotent cells of the body which are “undifferentiated.” This means that stem cells can ultimately give rise to any type of body tissue. Thus stem cells have the potential to cure a vast number of diseases and physical ailments including Parkinson’s, diabetes, spinal cord injury, and heart disease. Consequently, stem cell research and the development of associated medical applications are of great interest to the scientific and medical community. The area of stem cell research involving human embryonic stem cells is of particular interest in that embryonic stem cells are derived from week-old blastocysts developed from in vitro fertilized eggs. As opposed to adult stem cells, which must undergo a complicated process of de-differen...
Stem cell research began in 1956 when Dr. E Donnall Thomas performed the first bone marrow transplant (“Adult stem cells are not more promising,” 2007). Since that time, research has evolved into obtaining cells from a variety of tissues. According to stem cell research professors, Ariff Bongso and Eng Hin Lee (2005), “Stem cells are unspecialized cells in the human body that are capable of becoming cells, each with new specialized functions” (p. 2). Stem cells are in various adult tissues, such as bone marrow, the liver, the epidermis layer of skin, the central nervous system, and eyes. They are also in other sources, such as fetuses, umbilical cords, placentas, embryos, and induced pluripotent stem cells (iPSCs), which are cells from adult tissues that have been reprogrammed to pluripotency. Most stem cells offer multipotent cells, which are sparse...
Stem cells have the ability to transform into any kind of cell. These cells can divide and also replenish other cells in the body, such as muscle cells, brain cells, red blood cells, or they may just simply remain as stem cells. Stem cells are able to replicate even after long periods of dormancy. They naturally repair damaged tissues and can be experimentally induced to work with particular tissues and organs (NIH, 2013).
Stem cells are undifferentiated cells that can differentiate themselves into specific cell type. There are two types of stem cells. The first one is the adult's stem cell. These stem cells can be found in various places in an adult human body, like the brain, the bone marrow or the liver. The other type of stem cells is the embryonic stem cells. These cells are found in embryos before its implantation in the mother's uterus. At this stage the embryo is divided in two types of cell. The first one is the outer cluster of cell that forms the embryo that will become part of the placenta once the embryo hatch. And the inner cluster is the source of embryonic stem cell since it consists of undifferentiated cell that will divide and differentiate to form all the organs and tissue needed in an adult organism. As stem cell are undifferentiated cell they can become whatever cell type is needed in an organism and could be the solution to diseases that are, at this date, incurable. (Medical News Today, 2013). Most of the ethic's problem of the stem cells researches come from the embryonic stem cell researches and how the cells are collected. Embryonic stem cells can be obtained in several ways. The first one is after a couple's fertility treatment, there might be some embryos left and the couple can decide to donate their embryos to research. The second option is to collect stem cells from a foetus after an abortion. And the last possibility is to use therapeutic cloning. Using an ovum from witch the nucleus was taken off and the nucleus of a somatic cell, the origin of this cell in the body doesn't matter, it can come from the skin for example, it is possible to create an embryo and get the stem cell from the created embryo. But in all of...
Embryonic stem cells are derived from a four or five day old human embryo that is in the blastocyst phase of development (see figure 5). The embryo’s that are used for stem cell research, are extra’s that have been created in IVF clinics (in vitro fertilization), that are no longer needed. Embryonic stem cells are totipotent (cells with the potential to develop into any cells in the body). Scientists have discovered an alternative to embryonic stem cells, these cells ...
President Bush's limited federal funding of research relying on the destruction of human embryos violates federal statutory law. Christians have grieved for many years over the assault on unborn human life set loose upon our nation by the Supreme Court's Roe v. Wade decision. Even that decision, however, did not affect all areas of law where lawmakers seek to protect developing human life. Because they are not covered by the Court's theory of reproductive privacy, human embryos outside the womb may be fully protected by law - and at least nine states have acted to protect these embryos from lethal experiments. In some states, destructive experimentation on human embryos is a felony.
The importance of embryonic stem cells rests in their lack of specialization. These basic cells are present in the earliest stages of developing embryos and are able to develop into virtually any type of cell and tissue in the body. Being self-renewing, they offer a potentially limitless source of cells and tissue. (Tucker)
Have you ever seen a movie or read a book where they can tell what your child will look like or if they have a disease or birth defect. Or have you ever wondered how the world would be shaped if we could have clones or even erase genetic diseases. All of these things are theoretically possible with stem cell research. If we are able to reach this point what would we have to sacrifice in the process. To understand humanity would we have to sacrifice the values that truly make us human? What would the fail rate be if we are able to genetically enhance the human body?
There are many different types of stem cells that are being looked at for research. These include embryonic stem cells, adult stem cells, and induced pluripotent cells. Embryonic stem cells are cells that have the potential to produce many different cells in the body. They are cells that are tak...
Those who favour stem cell research are optimistic about the continued developments in stem cell research will open doors to many breakthrough discoveries in biomedical science. The scientific and ethical questions arise as rapidly as the reaching of milestones in stem cell research. There are two main types of stem cells, namely embryonic stem cells and adult stem cells. Adult stem cells are undifferentiated cells in our body. But they have restricted-range of cells that they can further differentiate. On the contrary, embryonic stem cells have the ability to differentiate into nearly two hundred cell types in the human body, called pluripotency. The process of harvesting embryonic stem cells involves destruction of embryos (Mooney, 2009).
Could you imagine being able to create new organs, tissues, muscles, and even food? With embryonic stem cell technology, believe it or not, these things are possible. Stem cells are the body's raw materials. Specifically, they are cells from which all other cells with specialized functions are generated. Under the right conditions in the body or in a laboratory, stem cells can divide to form more cells called daughter cells. These daughter cells either become new stem cells or turn into specialized cells with a more specific function, such as blood cells, brain cells, muscle cells or bone cells. The possibilities are almost endless. The debate and main issue with this technology is that the actual stem cells come from embryos. Embryos are an unborn or unhatched offspring in the process of development. Although there is controversy surrounding these cells, embryonic stem cells should continue to be researched and used, because they have so much potential.
Stem cells offer exciting promise for future therapies, but significant technical hurdles remain that will only be overcome through years of intensive research. Stem Cells have the incredible potential to develop into many different cell types in the body during early life and growth. Scientists primarily work with two kinds of stem cells from animals and humans. The embryonic stem cells and the non-embryonic stem cells. Stem cells are the cells from which all other cells originate. In a human embryo, a large portion of the embryo’s cells are stem cells. These stem cells can be used for cell-based therapies. Cell-Based therapies are treatments in which stem cells are induced to differentiate into the specific cell type required to repair damaged or destroyed cells or tissues. Stem cells are versatile and offer the possibility to treat a number of diseases including Alzheimer’s, stroke, cardiovascular disease, diabetes, etc. The problem is that for the process of embryonic stem cell research and embryo will be destroyed if used. This raises a moral issue and questions of whether stem cell research is unethical or not.
“The richest source of embryonic stem cells is tissue formed during the first five days after the egg has started to divide. At this stage of development, called the blastocyst, the embryo consists of a cluster of about 100 cells that can become any cell type. Stem cells are harvested from cloned embryos at this stage of development, resulting in the destruction of the embryo while it is still in the test tube. Researchers hope to use embryonic stem cells, which have the unique ability to generate virtually all types of cells in an organism, to grow healthy tissues in the laboratory that can be used to replace injured or diseased tissues. In addition, it may be possible to learn more about the molecular causes of disease by studying embryonic stem cell lines from cloned embryos derived from the cells of animals or humans with different diseases. Finally, differentiated tissues derived from embryonic stem cells are excellent tools to test new therapeutic drugs.” Although the exploration of these new cells can be beneficial for the future human generation, some critics this practice due to the fact that it is unethical and can turn into cancer cells. Stem cells have the capability to accumulate mutation, thus leaving a risk for diseases such as