how cancerous cells are developed?

Question

or any websites to intro ? thanks :)

Answer 1

Basically, cancer cells develop because of a number of genetic mutations (and more than at least five or so of these usually have to occur) many of which have to do with altered cell functions. For instance, some of these mutations can result in the cell being unable to enter the G0 phase of the cell cycle, and thus permanently remaining in the cell cycle, or the cell can undergo a mutation that prevents it from undergoing apoptosis. This is a really broad question... but think along those lines.

Answer 2

Several of the other answers give a good description of what is happening in the DNA when a mutation occurs.

What causes these mutations? Energy, Chemicals, Viruses.
Energy may be in the form of UV (sunlight) which causes skin cancer, X-rays, and electric sparks which attack the skin.

Chemicals may be in the form of tobacco smoke, organic solvents, dyes, etc. There is some evidence that prostate cancer is sometimes caused by insufficient drainage of seminal fluids.

Viruses are sometimes called "naked DNA" If a virus gets into the nucleus of a cell and attaches to the DNA of a cell, it might interfere with the growth control of the cell and it could become cancerous.

Hope this is helpful

Answer 3

IMMUNE SYSTEMS become weakened by poor nutrition, lack of exercise and reduced oxygen. Once that happens, our body becomes vulnerable to common STRESSORS. Stressors can be environmental, like viruses, heavy metals, pesticides, food additives, electromagnetic waves or pollution. They can be internal things like emotional or job stress, or poisonous people in our lives. Aging is also a contributing factor. So this means:

WEAK IMMUNE SYSTEM + STRESSORS = DISEASE (cancer, diabetes, heart disease, etc.)

Our bodies have 60 trillion--yes, trillion--cells, and there are always some mutating into cancer cells, but a healthy immune system kills them before they have a chance to get a foothold in the body.

It takes a LONG time, usually, or a high level of stressors, to weaken the immune system to the point where it won't do its job, but once cancer has formed, it will generally spread rapidly.

Answer 4

Cancer Cells growth-

Normal growth of cells is a highly regulated cellular function. The stimulus to begin cell division comes from growth factors that react with growth factor receptors on the surface of the cell. After the binding of growth factor to a growth factor receptor, the growth message is carried from the surface of the cell to the nucleus through a cascade of biochemical reactions referred to as signal transduction. Once the signal reaches the nucleus, transcription factors bind to the DNA, which turns on the production of proteins involved in growth and division of the cells.

DNA contains genetic information that encodes proteins involved in all aspects of cell metabolism. If a gene is damaged or mutated, the protein it encodes will be affected. DNA mutations can result in an altered expression of protein; either too much or too little, or in altered forms of a protein that either do not perform their function or perform it differently. Damage to genes that encode for proteins regulating cell growth such as oncogenes, tumor suppressor genes and DNA repair genes can result in alterations in cell growth and thus cancer.-

Answer 5

I don't know if you'll believe this but I entered into the search bar:
HOW CANCER CELLS DEVELOP, and, by gum, a lot of sites came up. What a notion . . .

Answer 6

there are two types of genes in our body one is growth promotor gene and another cancer supressor gene.if there is any alteration in these two genes cancer cells develop

Answer 7

i totally agree with dorothy and toto.