oncogene

Tumor-promoting DNA segment

An oncogene is a gene that, when mutated or abnormally expressed, can transform a normal cell into a cancerous one.

Most oncogenes arise from proto-oncogenes—normal genes involved in cell growth and division that become dangerous when altered: Researchers identified several oncogenes associated with breast cancer.

The concept is central to understanding how cancers develop at the molecular level.

carcinogenesis

neoplasia

Abnormal tissue proliferation

progression · immortalization · dysregulation · hyperplasia · dysplasia · metaplasia · proliferation · invasion · metastasis · angiogenesis

cancer-types

carcinoma

Epithelial malignant tumor

melanoma · glioma · myeloma · adenocarcinoma · glioblastoma · neuroblastoma · adenoma · neoplasm · tumor · malignancy

examples

HER2

Growth receptor oncogene

  • BCR-ABLChimeric cancer-causing kinase
molecular

tumor suppressor

Gene preventing uncontrolled growth

receptor · DNA · mutation · amplification · translocation · overexpression · activation · point mutation · deletion · insertion

mutagens

carcinogen

Cancer-promoting agent

ionizing · benzene · asbestos · tobacco · vinyl chloride · formaldehyde · arsenic · dioxins · radon · acrylamide

Categories
Opposites
cellular growth regulation

oncogeneBRCA1

Tumor suppressor gene

Family

oncogenes

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