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Oncogenes

R Todd1, D T Wong

  • 1Oral and Maxillofacial Surgery, Massachusetts General Hospital, Harvard School of Dental Medicine, Boston 02114, USA. randy-todd@hms.harvard.edu

Anticancer Research
|March 4, 2000
PubMed

Insights

Oncogenes, mutated proto-oncogenes, drive human cancer by altering cell growth and survival. Understanding these genetic changes is crucial for developing targeted cancer therapies.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Oncogenes arise from mutations in proto-oncogenes, which are normal cellular genes.
  • These mutated genes were first identified in viruses causing various animal cancers.
  • Oncogenes are significant factors in human cancer development (carcinogenesis).

Purpose of the Study:

  • To explain the origin and function of oncogenes.
  • To detail how proto-oncogenes are altered to become oncogenes.
  • To describe the role of oncogenes in cancer formation.

Main Methods:

  • Review of existing literature on oncogene discovery and function.
  • Analysis of genetic alterations (point mutation, amplification, rearrangement) in proto-oncogenes.
  • Examination of the impact of oncoproteins on cellular signaling pathways.

Main Results:

  • Proto-oncogenes can be structurally altered, leading to changes in protein expression or function.
  • Oncoproteins disrupt normal cellular signal transduction pathways.
  • Altered oncogene expression contributes to uncontrolled cell proliferation, cell cycle dysregulation, and blocked apoptosis.

Conclusions:

  • Oncogenes are key drivers of human cancer.
  • The disruption of normal cellular processes by oncoproteins promotes tumor formation.
  • Targeting oncogene pathways offers potential therapeutic strategies.

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