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Topic: Embryonic stem cell research


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  What are embryonic stem cells? [Stem Cell Information]
Specifically, embryonic stem cells are derived from embryos that develop from eggs that have been fertilized in vitro—in an in vitro fertilization clinic—and then donated for research purposes with informed consent of the donors.
The blastocyst includes three structures: the trophoblast, which is the layer of cells that surrounds the blastocyst; the blastocoel, which is the hollow cavity inside the blastocyst; and the inner cell mass, which is a group of approximately 30 cells at one end of the blastocoel.
Embryonic stem cells that have proliferated in cell culture for six or more months without differentiating, are pluripotent, and appear genetically normal are referred to as an embryonic stem cell line.
stemcells.nih.gov /info/basics/basics3.asp   (1152 words)

  
 OMF - Stem Cell Research
Stem cells, or "master cells," are cells in the human body that have not yet differentiated into a particular type of tissue.
Researchers hope to discover how to control this switching mechanism and reliably develop stem cells into various types of body tissue, which can then be used to repair damaged tissue and cure some kinds of disease and organic injuries.
Medical research must refrain from operations on live embryos, unless there is a moral certainty of not causing harm to the life or integrity of the unborn child and the mother, and on condition that the parents have given their free and informed consent to the procedure.
www.stclouddiocese.org /OMF/RespectLife/StemCellResearch.html   (2740 words)

  
 Stem Cell Research
Stem cells are "master cells" in the embryo which specialize in creating all the 210 different tissues and organs needed in the human body.
Totipotent stem cells are found in the cells comprising this one-to-three-day old embryo and possess this potential for total differentiation to create all the tissue and organs needed by this emerging new human life.
Embryonic stem cells are obtained from the early stages of embryonic life, from the inner cell mass in the blastocyst.
www.lifeprinciples.net /StemCell.html   (1790 words)

  
 CBHD: Stem Cell Research and "Therapeutic" Cloning - Linda K. Bevington
Human embryonic stem cells are the cells from which all 200+ kinds of tissue in the human body originate.
If fetal stem cells are obtained from miscarried or stillborn fetuses, or if it is possible to remove them from fetuses still alive in the womb without harming the fetuses, then no harm is done to the donor and such fetal stem cell research is ethical.
The long-held belief that non-embryonic stem cells are less able to differentiate into multiple cell types or be sustained in the laboratory over an extended period of time—rendering them less medically-promising than embryonic stem cells—has been repeatedly challenged by experimental results that have suggested otherwise.
www.cbhd.org /resources/stemcells/overview.htm   (1162 words)

  
 Embryonic Stem Cell Research
The question with embryonic stem cell research is whether the distinction between therapeutic cloning and cloning to create a human being is meaningful.
In the case of embryonic stem cell research, arguably, a human being is being sacrificed for her body parts so that someone else can survive or get healthy.
The first study from OHSU's new Oregon Stem Cell Center, published in the current issue of the journal Nature Medicine, found that mature macrophages derived from bone marrow stem cells, and not bone marrow stem cells themselves, are what fuse with diseased liver cells, ultimately curing a genetic liver disease.
www.inplainsite.org /html/embryonic_stem_cell_research.html   (4155 words)

  
 Embryonic Stem Cell Research
Consisting of merely 140 cells, this hollow, fluid-filled sphere is made up of two types of cells: Those which form the ‘shell’ of the sphere and those located within the ‘shell.’"(1) The cells that are within the shell are removed and the embryo dies.
Many kinds of stem cells are found in the body, with some more differentiated, or committed, to a particular function than others.
The blood of these two sources are rich in stem cells and are currently being used to treat a wide variety of diseases.
www.angelfire.com /la/IslamicView/StemCell.html   (1657 words)

  
 USCJ: Embryonic Stem Cell Research
Stem cells for research purposes, though, can also be procured from donated sperm and eggs mixed together in a petri dish and cultured there.
Thus, while obtaining embryonic stem cells from frozen embryos that would otherwise be discarded is best, embryos may also be specifically created for purposes of medical research on the condition that the woman providing the eggs for such efforts does so only once or twice.
The potential of embryonic stem cell research for creating organs for transplant and c ures for diseases is, at least in theory, both awesome and hopeful.
www.uscj.org /Embryonic_Stem_Cell_5809.html   (2083 words)

  
 Embryonic Stem Cell Research
Stem cell research promises great good and is a worthy scientific priority as long as it is pursued ethically.
However, extracting embryonic stem cells, usually obtained from so-called “spare embryos” that are created by fertility clinics, always involves the destruction of a human embryo.
Included in these are techniques to stimulate the growth and specialization of stem cells found in adult tissues and the use of stem cells from bone marrow or umbilical cord blood.
www.mdcathcon.org /embryonic_stem_cell_research.htm   (826 words)

  
 Stem Cell Research
Stem cells are cells within the body that have the potential to develop into one or many kinds of cells.
Some research suggests that adult stem cells can be used to grow blood cells and cells for damaged bones or liver tissue.
The Board approved a recommendation to allow meritorious research involving human stem cells to be eligible for funding as part of the Association's scientific research grant program -- but not until the Board reviewed and approved specific rules and safeguards (research standards) for funding this type of research.
www.americanheart.org /presenter.jhtml?identifier=4757   (662 words)

  
 EMBRYONIC STEM CELL RESEARCH
Accordingly, it is perfectly ethical to proceed with any and all type of stem cell research as long as this is human tissue, but it is completely unethical to do embryonic stem cell research, which of its very nature necessitates the killing of a living human embryo to obtain that stem cell.
To obtain an embryonic stem cell, the researcher must cut open this embryo, thereby killing him or her and extracting stem cells.
Adult stem cells are increasingly being shown to have a similar and perhaps an identical capacity to become cells of other types.
www.lifeissues.org /cloningstemcell/article.html   (1259 words)

  
 Q & A on Embryonic Stem Cell Research - Stem Cell Institute at the University of Minnesota
Research in Embryonic Stem Cells at the University of Minnesota
Stem cells are parent cells for all the tissues of the body.
Here at the University, researchers are studying the use of all types of stem cells for repair of damaged hearts, treatments and cures for Parkinson’s and stroke, as well as treatments for inherited genetic diseases.
www.stemcell.umn.edu /stemcell/stemcell101/qanda/home.html   (955 words)

  
 stemcellresearch.org - Founding Statement
Stem cells are the cells from which all 210 different kinds of tissue in the human body originate.
While it is true that these stem cells had to be wrapped in placenta-like cells in order to implant in a female mouse, it seems that at least some doubt has been cast on the claim that a cluster of stem cells is not embryonic in nature.
Given that the function of the adult stem cells was converted without the cells first having to pass through an embryonic stage, the use of such cells would not be subject to the ethical and legal objections raised by the use of human embryonic stem cells.
www.stemcellresearch.org /statement/statement.htm   (5383 words)

  
 Embryonic stem cell - Wikipedia, the free encyclopedia
Embryonic stem cells (ES cells) are stem cells derived from the inner cell mass of a early stage embryo known as a blastocyst.
Embryonic stem cells are pluripotent, meaning they are able to differentiate into all derivatives of the three primary germ layers: ectoderm, endoderm and mesoderm.
Stem cells are maintained as undifferientated cell through the actions of transcription factors such as Nanog, Oct4, and Sox2.
en.wikipedia.org /wiki/Embryonic_stem_cell_research   (1565 words)

  
 2004.07.22: Embryonic Stem Cell Research
NIH has funded an adult stem cell bank which provides mesenchymal stem cells to the research community.  This type of adult stem cell is able to proliferate, which lends itself to the degree of expansion necessary for wide distribution; they have also been shown to have the capacity to differentiate into specialized cells.
Research conducted at the Bank will provide important insights about which cells might be most useful for a specific basic or translational research activity by exploring the functional diversity of the cell lines.
Because stem cell lines divide continuously in culture, these lines can be used by hundreds of individual researchers.  One line alone has already resulted in 136 shipments to researchers.
www.hhs.gov /news/press/2004pres/20040714b.html   (998 words)

  
 Stem cell - Wikipedia, the free encyclopedia
Stem cells, however, are already used extensively in research, and some scientists do not see cell therapy as the first goal of the research, but see the investigation of stem cells as a goal worthy in itself.
Embryonic stem cell research is particularly controversial because, with the present state of technology, starting a stem cell line requires the destruction of a human embryo and/or therapeutic cloning.
Opponents of the research argue that this practice is a slippery slope to reproductive cloning and tantamount to the instrumentalization of a human being.
en.wikipedia.org /wiki/Stem_cell_research   (2098 words)

  
 CNN.com - Bush to allow limited stem cell funding - August 10, 2001
Embryonic stem cells have the potential to turn into any other kind of cell in the body, and have been looked to as possible treatments for Alzheimer's disease and Type I diabetes.
Other groups, such as anti-abortion activists, consider stem cell research the taking of a human life because embryos must be destroyed to harvest the stem cells.
Research supporter Montel Williams, a talk-show host who suffers from multiple sclerosis, said it was not known whether the 60 cell lines referred to by Bush were "viable." He urged funding for research using stem cells from excess embryos that are to be discarded anyway.
cgi.cnn.com /2001/ALLPOLITICS/08/09/stem.cell.bush/index.html   (1121 words)

  
 Support for embryonic stem cell research
Embryonic stem cells derived from SCNT are artificially produced without the combination of sperm and egg, and these cells never reach a human uterus.
Embryonic stem cells have the potential to develop into any type of cell in the human body.
Researchers have developed retina, heart and nerve cells from embryonic stem cells.
seattlepi.nwsource.com /opinion/219669_stemcellrebut12.html   (753 words)

  
 Embryonic Stem Cell Research. 
There are three sources of stem cells: adult stem cells, umbilical cord stem cells, and embryonic stem cells.
The House of Representatives has recently passed a bill allowing more embryos to be destroyed in the name of stem cell research, and the Senate, is likely poised to pass a similar measure.
Umbilical cord stem cells have also yielded promising results, but have been stifled by a lack of funding.
www.tybergforcongress.com /embryonicstemcell.html   (372 words)

  
 CBHD: “Ethical” Embryonic Stem Cell Research? -- Daniel McConchie
New research has shown that a chemical trigger can cause an egg to begin dividing and organizing—even eggs that have failed to be fertilized by a sperm.
It is possible that failure to create stem cell lines from “surplus” IVF embryos is due to the failure of the cell from “dead” embryos to replicate.
While pursuing in animal studies the knowledgebase that might justify human trials, these methods of obtaining such cells should be used so that we might have as much knowledge as possible for determining potential ethical means of obtaining embryonic stem cells if or when it becomes necessary to do so.
www.cbhd.org /resources/stemcells/mcconchie_2005-06-10.htm   (1773 words)

  
 embryonic stem cell research
This would make the transition from what research that has been done with embryonic stem cells to be duplicated much quicker from the non-controversial sources.
The reasoning that the 60 cell lines are already available for the use will not violate his campaign promise and reiteration tonight that he will not cause embryonic life to be taken, is flawed.
When the cell lines die out, as may occur, and oftentimes does occur even though they are 'immortalized', do we give up the benefit or do we give up our limitation to these 60 cell lines.
dutyisours.com /estemcell.htm   (2507 words)

  
 Stem Cell Research at UCSF
But as we gain a greater understanding of how stem cells in our body change from their undifferentiated states to become specialized tissues, UCSF's Institute for Regeneration Medicine is at the threshold of developing cell-based approaches and therapies for various diseases that result from tissue injury or degeneration.
Their efforts, organized around research areas, are aimed at gaining a better understanding of how defined types of tissues develop, and are directed toward cell-based approaches to the treatment of disease.
Accordingly, the laboratories and research efforts are organized along a series of pipelines, each focusing on a particular tissue or organ system, and including basic research as well as translational research directed toward clinical applications.
www.ucsf.edu /research/stem_cells.html   (406 words)

  
 Online NewsHour -- Stem Cell Research
Two teams of researchers working independently announced Sunday that they discovered ways to create embryonic stem cells without destroying embryos, a development that scientists believe may make the field more politically and ethically acceptable.
Harvard researchers announced Monday that they have found a way to fuse adult skin cells with embryonic stem cells, which could lead to the creation of stem cells without having to destroy human embryos.
Scientists in South Korea, who announced last year that they extracted stem cells from a cloned human embryo, have used the same technology to create embryonic stem cells from human patients.
www.pbs.org /newshour/health/stemcells.html   (558 words)

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