Gene Expression In Cancer And Causes Of Cancer. by

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Gene Expression In Cancer And Causes Of Cancer.

Published on Nov 25, 2015

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PRESENTATION OUTLINE

The expression of oncogenes and mutated tumor-suppressor genes causes cancer cells to behave differently than normal cells. A normal cell must be attached to other cells, to a membrane, or to fibers between cells in order to divide. Also, normal mammalian cells will stop dividing after about 40 cell divisions—or sooner if they become too crowded.

Photo by Enzymlogic

The mutations that alter the expression of genes coding for cell- regulating proteins can occur spontaneously but are more likely to occur as a result of the organism’s exposure to a carcinogen. A carcinogen is any substance that can induce or promote cancer. Most carcinogens are mutagens, agents that cause mutations to occur within a cell.

Photo by Matthew Fang

Gene expression•Proto-oncogenes- which regulate cell growth, cell division, and the •ability of cells to adhere to one another.A mutation in a Proto- oncogene can change the gene into an •oncogene, a gene that can cause uncontrolled cell proliferation.Cancer can invade your cells.•Some hospitals are trying to find a cure for cancer.•

A tumor is an abnormal proliferation of cells that results from uncontrolled, abnormal cell division The cells that make up a benign tumor remain within a mass benign tumors are the fibroid cysts that can occur in a woman’s breasts or uterus. uncontrolled dividing cells may invade and destroy healthy tissues elsewhere in the body. This uncontrolled growth of cells that can invade other parts of the body is called cancer.Can be removed.

Cancer is a complex group of diseases with many possible causes. lifestyle factors such as tobacco use, diet, and physical activity; certain types of infections; and environmental exposures to different types of chemicals and radiation.

Rebekah Rigby