Regulating the Cell Cycle

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Presentation transcript:

Regulating the Cell Cycle 10.3 Regulating the Cell Cycle

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

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

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

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

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