1. Regulating the Cell Cycle
10.3
Regulating the Cell Cycle

2. Cyclins – proteins that regulate the timing of the cell cycle
Regulatory proteins –
* Internal –
* External –
Ex. Growth factors
Apoptosis – programmed cell death

3. Cancer = uncontrolled cell growth and division
Tumors form – some benign, some malignant
Causes – defects in genes that regulate cell growth and division
Defects from: tobacco use, radiation exposure, viral infections, other defective genes

7. Treatments Surgery Radiation – damages DNA
Chemotherapy – chemicals that kill cancer cells

8. Newer Treatments Targeted therapy (genes) Immunotherapy (Biotherapy)
Hyperthermia (heat)
Stem Cell Transplants
Photodynamic therapy (drugs and light)
Laser treatment

9. Who is she?