1 / 21

Promise and Peril of Stem Cells

Promise and Peril of Stem Cells. J. Kirk Brown Tracy High School. Cloning in the News. What are Stem Cells?. NIH Definitions. Stem cells - cells that have the ability to divide for indefinite periods in culture and to give rise to specialized cells.

cher
Download Presentation

Promise and Peril of Stem Cells

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Promise and Peril of Stem Cells J. Kirk Brown Tracy High School

  2. Cloning in the News

  3. What are Stem Cells?

  4. NIH Definitions • Stem cells - cells that have the ability to divide for indefinite periods in culture and to give rise to specialized cells. • Pluripotent -capable of giving rise to most tissues of an organism. • Totipotent - having unlimited capability. Totipotent cells have the capacity to specialize into extraembryonic membranes and tissues, the embryo, and all postembryonic tissues and organs.

  5. Totipotent vs. Pluripotent Stem Cells

  6. What are Stem Cells?

  7. What are Stem Cells?

  8. Source of Stem Cells • ES vs EG lines • Embryonic Stem Cells • From IVF embryos • Embryonic Germ Cells • From Aborted Fetuses

  9. Major Ethical Issues • Two Major Issues: For those who believe that the embryo has the moral status of a person from the moment of conception, research (or any other activity) that would destroy the embryo is considered wrong and should not take place. For those who believe otherwise, arriving at an ethically acceptable policy in this arena involves a complex balancing of a number of important ethical concerns. Although many of the issues remain contested on moral grounds, they co-exist within a broad area of consensus upon which public policy can, at least in part, be constructed. • ETHICAL ISSUES IN HUMAN STEM CELL RESEARCH VOLUME I Report and Recommendations of the National Bioethics Advisory CommissionSept 1999

  10. What about Adult Stem Cells? • Some Stem cells live in the body of humans. • Most of these cells are called Multipotent (most adult stem cells). They can be induced to become fewer tissues than Pluripotent Stem cells that are derived from Embryos. • New research is showing that we can induce adult stem cells to become more pluripotent.

  11. Pluripotent Blood Stem Cells

  12. Umbilical Cord Blood Storage for Pluripotent Stem Cells • COMPANYWEBSITE • Alpha Cordwww.alphacord.com • California Cryobank, Inc.www.cryobank.com • Cord Blood Registrywww.cordblood.com • CorCellwww.corcell.com • CORD,Inc.www.cordbloodforlife.com • CordPartnerswww.cordpartners.com • Cryo-Cell Int.www.cryo-cell.com • Future Health Technologies(UnitedKingdom)www.futurehealthtechnologies.com • GeneAngelwww.geneangel.com • Lifebank, Inc.www.lifebankusa.com • Lifebank Cryogenics Corp.(Canada) www.lifebank.com • New England Cord Blood Bank, inc.www.cordbloodbank.com • Securacell, Inc.www.securacell.comUK Cord Blood Bank(United Kingdom)www.cordbloodbank.co.ukViaCordwww.viacord.com

  13. Potential Benefits • Organ shortage (long term) • Tissues for Treatments (shorter term) • Valves, Skin, Nerves for Spinal Cord Injuries • Diabetes (Type 1)

  14. Concerns • Stem Cell Sources • Limits with Sources • Embryo vs Fetus • Rights of Fetus • Rights of Embryo

  15. Next Steps S. Korea Gives OK to Stem-Cell Research • Educate the Public • Read about the Issues • Become informed voters • California is Leading the U.S. • Proposition 71 provides $3 billionin state funding over next decade

  16. Patents • PAT. NO.  Title • 6,258,998  Method of cloning porcine animals  • 6,265,546  Prostate cancer gene  • 6,147,276  Quiescent cell populations for nuclear transfer in the production of non-human mammals and non-human mammalian embryos  • 6,255,112  Regulation of hematopoietic stem cell differentiation by the use of human mesenchymal stem cells  6,271,436  Cells and methods for the generation of transgenic pigs  • 5,776,679  Assays for the DNA component of human telomerase  • 6,248,527  Method of detecting risk of type II diabetes based on mutations found in carboxypeptidase E 

  17. Bibliography • ETHICAL ISSUES IN HUMAN STEM CELL RESEARCH VOLUME I Report and Recommendations of the National Bioethics Advisory Commission National Bioethics Advisory Commission Sept 1999 • Berg, Paul Biochem 118 Lecture Stanford Universityhttp://cmgm.stanford.edu/biochem118/Stem%20Cell.html Accessed 1/17/2005 • Human Stem Cell Research Promise and Problems http://www.northwestern.edu/science-outreach/stemcell/stemcells.html Accessed 1/17/2005 • Picture at the top http://science.howstuffworks.com/brain1.htm • National Institutue of Health http://stemcells.nih.gov/info/basics/basics4.asp • http://easyweb.easynet.co.uk/~sfl/rlb_stem.htm drawn image

More Related