chapter 3: cells part iv: the cell cycle control of cell division stem and progenitor cells
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Chapter 3: CellsPart IV:
The Cell CycleControl of Cell Division
Stem and Progenitor Cells
The Cell Cycle
• Cell Cycle– 1. – 2.
• Interphase-1.
2. Stagesa.
b.
c.
The Cell Cycle
Cell Cycle
• Mitosis1.
2.
3.
Cell Cycle• Prophase
1.
2
Cell Cycle• Metaphase
1.
2.
Cell Cycle• Anaphase
1.
2.
3.
Cell Cycle• Telophase
1.
2.
Cell Cycle
• Cytoplasmic Division (cytokinesis)1.
2.
3.
Control of Cell Division
• Cells divide at different rates 1.
2.
• Cells in humans
Control of Cell Division
• Telomeres
• # of divisions of a cell 1.
2.
Control of Cell Division
• Other factors also control cell division:1. Size of cell
2. Hormones and Growth factors
3. Space availability
Control of Cell Division
• Tumors: 1.
2.
3. Two typesa.
b.
Control of Cell Division
• Cancer: 1.
2.
3.
• Metastasis
Control of Cell Division
• Characteristics of cancer cells– Pg. 105 Table 3.6
• Treatment1.
2.
3.
Control of Cell Division• Genes and Cancer:
1. Oncogenes
2. Tumor suppressor genes
• Environmental factors 1.
2.
Stem Cells and Progenitor Cells
• Cells come from other preexisting cells.
• Stem cells 1.
2.
• Progenitor cells
Stem cells and progenitor cells
• Totipotent1.
2.
• pluripotent- 1.
2.
Stem and Progenitor Cells
• All cells have
– Exception:
• Each cell type follows
• See Figure 3.42 on pg. 108
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