BSC 108 Lecture Notes - Lecture 11: Tumor Suppressor Gene, Human Papillomavirus Infection, Oncogene
9 May 2017
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Document Summary
In 1996 researches studying lung cancer found that, in human lung cells growing in the lab, a component of tobacco smoke, bdpe, binds to dna within a gene called p53, which codes for a protein . Cell cycle regulation: normal growth in plants and animals requires careful regulation. Skin cells divide frequently throughout life, but liver cells divide only when needed (perhaps to heal a wound) Some specialized cells do not divide at all, such as nerve cells: regulation is at the molecular level. Normal plant and animal cells have a cell cycle control system. Proteins that integrate information and send (cid:498)stop: or (cid:498)go ahead(cid:499) signals: both plant and animal cells can become cancerous at key points in the cycle. Means they are growing out of control. It can spread to other parts of the body. A person with malignant cancer cells is said to have cancer. It did not have the characteristics of cancer.
