What does oncogenesis mean?
Oncogenesis names the biological process through which cancer develops. It describes the gradual transformation of normal cells into malignant cells whose growth, division, and survival are no longer properly regulated. The process may begin with genetic mutations and can be promoted by factors such as viruses, radiation, chemicals, or chronic inflammation. Oncogenesis also involves changes in cell signaling, DNA repair, and interactions with surrounding tissues. In medicine and biological research, the term is used to organize knowledge about how cancers originate and progress, rather than referring to a single disease. Its close relatives include oncogenic, meaning capable of causing cancer, and oncogene, meaning a gene that can promote malignant transformation. Although the word may sometimes overlap with carcinogenesis or tumorigenesis, it is particularly associated with the cellular and molecular development of cancer. The term is formal and principally used in clinical and scientific contexts.
nounThe process by which cancer develops, especially the series of biological changes that transform normal cells into malignant cells. The term may also refer more broadly to the formation of cancerous tumors.
- The biological process by which malignant cancer develops from normal cells or tissues.
"Researchers are investigating the molecular mechanisms of oncogenesis in human breast tissue."
"Viral infections can contribute to oncogenesis by disrupting normal cellular regulation."
"The study examined how inflammation may promote oncogenesis in the lining of the stomach."
Oncogenesis is usually treated as an uncountable process; oncogeneses is a rare plural used when referring to separate instances.
"The researchers compared oncogeneses in two experimental mouse models."
Oncogenesis is the point at which normal biology becomes cancer biology: a chain of mutations that teaches a cell to survive, divide, and ignore the body's growth controls.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does oncogenesis come from?
Oncogenesis combines the combining form onco-, derived from Greek onkos, meaning a mass or bulk, with genesis, from Greek genesis, meaning origin or creation. The term developed in the twentieth century as biomedical research increasingly described cancer in terms of the processes that produce malignant transformation. Its relatives include oncogenic, oncogene, and carcinogenesis, the latter joining the same Greek word for origin to a separate term for cancer.
Related word forms
How oncogenesis is actually used
This is a technical term used chiefly in oncology, pathology, and biomedical research. It is most common in formal and scientific writing.
Easily confused with oncogenesis
Tumorigenesis is the formation of tumors in general, including benign ones, whereas oncogenesis specifically concerns the development of malignant, cancerous growths.