Embryonic stem cells (ES cells) are pluropotent stem cells derived from the inner cell mass of the blastocyst, an early-stage embryo. Human embryos reach the blastocyst stage 4–5 days post fertilization, at which time they consist of 50–150 cells.
Although embryonic stem cell research has been somewhat controversial in the past, and even in the present. We feel that embryonic stem cells should be studied in the lab, and taken to the clinical trial stage as soon as it can be done safely. Embryonic stem cells remain the gold standard of stem cell research, and will remain so for several decades to come.
Embryonic stem cells are pluripotent and any human cell or tissue type can be derived from their use, this makes them far more useful than any other type of stem cell currently available.
Embryonic stem cell research should be studied to the full capacity of our abilities, However strict regulation and oversight need to be in place to prevent their misuse.
There are three classes of stem cells:
totipotent, multipotent, and pluripotent. A fertilized egg is
considered totipotent, meaning that its potential is total; it gives
rise to all the different types of cells in the body. Stem cells that
can give rise to a small number of different cell types are generally
called multipotent. Pluripotent stem cells can give rise to any type of
cell in the body except those needed to develop a fetus.
Adult stem cells are multipotent: That is they have a limited ability to be used for curing disease, and can only differentiate into a limited number of cell or tissue types. Bone Marrow, skin, liver, and kidney are a few of the tissue types which are available through the use of adult stem cells. Research should continue in this area for the possible overlapping effect which may be present between embryonic, and adult stem cells.
Stem cells have potential in all areas of medical research. To begin with, stem cell research will
help us to understand how they transform into the dazzling array of
specialized cells that make us what we are. Some of the most serious
medical conditions, such as birth defects, are due to
problems that occur somewhere in this process. A better understanding
of normal cell development will allow us to understand and fix these errors that cause these medical conditions. Another
potential application of stem cells is making cells and tissues for
medical therapies. Today, donated organs and tissues are often used to
replace those that are diseased or destroyed. Unfortunately, the number
of people needing a transplant far exceeds the number of organs
available for transplantation. Pluripotent stem cells offer the
possibility of a renewable source of replacement cells and tissues to
treat a myriad of diseases, conditions, and disabilities including
Parkinson's and Alzheimer's diseases, spinal cord injury, stroke,
burns, heart disease, diabetes, kidney/liver disease and rheumatoid
arthritis.
The development of stem cell lines that can
produce many tissues of the human body is an important scientific
breakthrough. This research has the potential to revolutionize the
practice of medicine and improve the quality and length of life. Given
the enormous promise of stem cells therapies for so many devastating
diseases, the National Institutes of Health believes that it is important to simultaneously pursue
all lines of research and search for the very best sources of these
cells.
Removing Barriers to Responsible Scientific Research Involving Human Stem Cells By the authority vested in me as President by the Constitution and the laws of the United States of America, it is hereby ordered as follows: Section 1. Policy. Research involving human embryonic stem cells and human non-embryonic stem cells has the potential to lead to better understanding and treatment of many disabling diseases and conditions. Advances over the past decade in this promising scientific field have been encouraging, leading to broad agreement in the scientific community that the research should be supported by Federal funds. For the past 8 years, the authority of the Department of Health and Human Services, including the National Institutes of Health (NIH), to fund and conduct human embryonic stem cell research has been limited by Presidential actions. The purpose of this order is to remove these limitations on scientific inquiry, to expand NIH support for the exploration of human stem cell research, and in so doing to enhance the contribution of America’s scientists to important new discoveries and new therapies for the benefit of humankind. Sec. 2. Research. The Secretary of Health and Human Services (Secretary), through the Director of NIH, may support and conduct responsible, scientifically worthy human stem cell research, including human embryonic stem cell research, to the extent permitted by law. Sec. 3. Guidance. Within 120 days from the date of this order, the Secretary, through the Director of NIH, shall review existing NIH guidance and other widely recognized guidelines on human stem cell research, including provisions establishing appropriate safeguards, and issue new NIH guidance on such research that is consistent with this order. The Secretary, through NIH, shall review and update such guidance periodically, as appropriate. Sec. 4. General Provisions. (a) This order shall be implemented consistent with applicable law and subject to the availability of appropriations. (b) Nothing in this order shall be construed to impair or otherwise affect: (i) authority granted by law to an executive department, agency, or the head thereof; or (ii) functions of the Director of the Office of Management and Budget relating to budgetary, administrative, or legislative proposals. (c) This order is not intended to, and does not, create any right or benefit, substantive or procedural, enforceable at law or in equity, by any party against the United States, its departments, agencies, or entities, its officers, employees, or agents, or any other person. VerDate Nov<24>2008 15:51 Mar 10, 2009 Jkt 217001 PO 00000 Frm 00003 Fmt 4705 Sfmt 4790 E:\FR\FM\11MRE0.SGM 11MRE0 rwilkins on PROD1PC63 with NOTICES 10668 Federal Register / Vol. 74, No. 46 /Wednesday, March 11, 2009 / Presidential Documents Sec. 5. Revocations. (a) The Presidential statement of August 9, 2001, limiting Federal funding for research involving human embryonic stem cells, shall have no further effect as a statement of governmental policy. (b) Executive Order 13435 of June 20, 2007, which supplements the August 9, 2001, statement on human embryonic stem cell research, is revoked. THE WHITE HOUSE, March 9, 2009.