Cell Cycle Regulation and Cancer. 3 Checkpoints Control the cell cycle (inspection points) Make sure the cell is ready to move into the next phase. Mitosis.

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Presentation transcript:

Cell Cycle Regulation and Cancer

3 Checkpoints Control the cell cycle (inspection points) Make sure the cell is ready to move into the next phase. Mitosis “out of control” leads to cancer cancer

What is Cancer? Abnormal cell growth (neoplasia) Benign: slow growth, non-invasive, no metastasis (spread of cancer) Malignant: rapid growth, invasive, potential for metastasis

RankCause of Death No. of deaths % of all deaths US Mortality, Heart Diseases 685, Cancer 556, Cerebrovascular diseases 157, Chronic lower respiratory diseases 126, Accidents (Unintentional injuries) 109, Diabetes mellitus 74, Influenza and pneumonia 65, Alzheimer disease 63, Nephritis 42, Septicemia 34,

2006 Estimated US Cancer Cases* *Excludes basal and squamous cell skin cancers and in situ carcinomas except urinary bladder. Source: American Cancer Society, Men 720,280 Women 679,510 31%Breast 12%Lung & bronchus 11%Colon & rectum 6% Uterine corpus 4%Non-Hodgkin lymphoma 4% Melanoma of skin 3% Thyroid 3%Ovary 2% Urinary bladder 2% Pancreas 22%All Other Sites Prostate33% Lung & bronchus13% Colon & rectum10% Urinary bladder6% Melanoma of skin5% Non-Hodgkin 4% lymphoma Kidney3% Oral cavity3% Leukemia3% Pancreas2% All Other Sites18%

Cancer Cells

What do cancer cells look like?

Causes of Cancer Carcinogenic chemicals tobacco, asbestos, dioxins, UV rays

3 Types of Skin CancerSkin Cancer Basal Cell Carcinoma 250,000 Squamous Cell Carcinoma 850,000 Melanoma 60,000 U.S. Estimated Skin Cancer Cases (2007) From ACS Facts and Figures 2007 MelanomaMelanoma: Dear 16 year-old me

Detection of Skin Cancer Images Courtesy of: The Skin Cancer Foundation, Asymmetry Border Color Diameter

Skin Cancer Deaths Melanoma 8,110 Basal and Squamous Cell Carcinoma 2,000 U.S. Estimated Skin Cancer Deaths (2007) From ACS Facts and Figures 2007

Vitamin D The Sun and You Benefits of the SUN The sun triggers Vitamin D synthesis, which is good for the body Only SMALL amounts of sunlight are needed (10-15 minutes; NOT a suntan) Vitamin D is found in foods such as eggs, fish, and cheese

Prevention American Cancer Society Recommendation “Slip! Slop! Slap! Wrap!” Slip on a shirt, Slop on 15 SPF (or higher) sunscreen, Slap on a hat, Wrap on sunglasses before any exposure to the sun. * From ACS Skin Cancer Fact Sheet 2006