Stem_Cells_and_Cancer_PPT.ppt
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Stem cells are unspecialized cells that can renew themselves and give rise to specialized cell types. Cancer stem cells are stem cells that have acquired mutations, causing uncontrolled growth and improper cell differentiation. Scientists have identified cancer stem cells as the "root" of tumors - when transplanted, most tumor cells die but rare cancer stem cells can regrow new tumors. Cancer stem cells may arise from mutations in normal stem cells. Conventional chemotherapy targets rapidly dividing cells but not stem cells, allowing cancer stem cells to survive therapy and regrow tumors. New targeted therapies aim to specifically kill cancer stem cells in order to eliminate the source of the cancer.
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Stem_Cells_and_Cancer_PPT.ppt
- 1. Stem Cells and Cancer Cancer Education Project University of Rochester
- 2. Stem Cells: The Good and The Bad
- 3. Stem Cells: What are they? Can you divide and renew yourself ? Yeah Stem Cell Recruitment Center
- 4. Stem Cells: What are they? See, Im still here! Stem Cell Recruitment Center
- 5. Stem Cells: What are they? You seem rather unspecialized. Can you give rise to specialized cells? Yes, Im unspecialized but my brother can become specialized. Watch him. Stem Cell Recruitment Center
- 6. Stem Cells: What are they? My brother can become a skin cell. He specialized to form tight attachments to his neighbors Stem Cell Recruitment Center
- 7. Stem Cells: What are they? Youre hired. You can start as one of our stem cells tomorrow So do I get the job? Stem Cell Recruitment Center
- 8. Stem Cells: Not like other cells Stem Cell Stem Cell Progenitor Cell Red Blood Cell Platelet White Blood Cell Self Renewal Undifferentiated Cell division and differentiation
- 9. Adult stem cells: Many different types Neural Stem Cell Blood Stem Cell Adult stem cells contribute to homeostasis They divide only when needed Their progeny differentiate into cells that perform essential body functions.
- 10. Cancer Stem Cells Uncontrolled, rapid cell division gives rise to improperly differentiated tumor cells Cancer Stem Cell DNA mutations Cancer Stem Cell Cancer Progenitor Cell
- 11. Identifying Cancer Stem Cells Scientists can break up the cells of a tumor, then transplant each tumor cell into a new location. Most of the tumor cells end up dying But a rare few go on to grow a new tumor Cancer Stem Cells Tumor
- 12. Where might cancer stem cells come from? DNA mutations in normal stem cells may give rise to cancer stem cells
- 13. Chemotherapy: Targets Rapidly Dividing Cells Conventional chemotherapy targets rapidly dividing cells. Stem cells do not divide rapidly, so are not targeted by chemotherapy. X X X
- 14. Chemotherapy: Targets Rapidly Dividing Cells The stem cell survives conventional chemotherapy and divides to form a new tumor Cancer Stem Cell
- 15. Whats coming in cancer therapy? New targeted drugs that specifically kill cancer stem cells without harming normal stem cells should remove the root of the cancer. The rest of the cancer cells should die on their own, or conventional chemotherapy drugs can be used to kill these cells
- 16. Scientists are searching for answers to these questions about cancer stem cells What makes these cells different? What kinds of drugs can target these cells? What cellular pathways are affected by drugs that target these cells? Are there other possible drugs that target those pathways?
- 17. Cancer Stem Cell Cartoon 3, 4 and 5, or 6 and 7, or 8 and 9 Work with your team to draw a stem cell cartoon strip that illustrates the answers to questions: