Breast cancer and the protooncogene

Metrics details. Overexpression of BRF2 can transform human mammary epithelial cells. In both breast and lung cancers, the BRF2 gene is amplified and overexpressed and may serve as an oncogenic driver. Furthermore, elevated BRF2 can be independently prognostic of unfavorable survival. Dietary soy isoflavones increase metastasis to lungs in a model of breast cancer and a recent study reported significantly increased cell proliferation in breast cancer patients who used soy supplementation. The soy isoflavone daidzein is a major food-derived phytoestrogen that is structurally similar to estrogen.

Genetics of Kidney Cancer (Renal Cell Cancer) (PDQ®)–Health Professional Version

HER2 - Wikipedia

When it comes to cancer and how things can go wrong in the cell cycle, three different genes are very important:. An oncogene is a proto-oncogene that has been mutated in a way that leads to signals that cause uncontrolled growth- i. This is like pushing down on the gas pedal - you now have a gene that is telling the cell, "go, go, go; don't pay attention to the checkpoint and stop". Not all genes can mutate and form oncogenes. Only "proto-oncogenes" can mutate to form an oncogene.

Myc (biologia)

Oncogenes are mutated genes that can contribute to the development of cancer. In their non-mutated state, everyone has genes which are referred to as proto-oncogenes. When proto-oncogenes are mutated or increased in numbers amplification due to DNA damage such as exposure to carcinogens , the proteins produced by these genes can affect the growth, proliferation, and survival of the cell, and potentially result in the formation of a malignant tumor. There are many checks and balances in place, and the development of cancer most often requires mutations or other genetic changes in both oncogenes and tumor suppressor genes genes that produce proteins that either repair or eliminate damaged cells.
Numbers or letters after T, N, and M provide more details about each of these factors. Higher numbers mean the cancer is more advanced. T followed by a number from 0 to 4 describes the main primary tumor's size and if it has spread to the skin or to the chest wall under the breast. This includes inflammatory breast cancer. N followed by a number from 0 to 3 indicates whether the cancer has spread to lymph nodes near the breast and, if so, how many lymph nodes are involved.
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