Summary
Mutations in oncogenes and tumour suppressors disrupt cycle control, apoptosis and adhesion, producing uncontrolled growth.
In depth
Hallmarks of cancer include sustained proliferative signalling, evading growth suppressors, resisting apoptosis, unlimited replication, angiogenesis and invasion. Oncogenes such as RAS act like stuck accelerators; tumour suppressors such as p53 and RB are failed brakes.
Cancer is usually the result of multiple accumulated mutations, explaining why risk rises with age. Tumour cells are genetically heterogeneous and evolve under selection, leading to drug resistance.
Tumours arise through clonal evolution: a mutation gives one cell an advantage, its progeny expand, and further mutations add traits, so tumours become heterogeneous. Typical solid cancers need about 5 to 10 driver mutations, which explains why risk rises steeply with age. Additional hallmarks include reprogrammed metabolism (the Warburg effect, favouring glycolysis even with oxygen present) and evasion of the immune system.
Treatments have advanced from surgery, radiotherapy and chemotherapy to targeted drugs (imatinib), immunotherapy that releases T cells (anti-PD-1 antibodies) and CAR-T cells. Early detection by screening greatly improves survival.
Common mistake: thinking cancer is one disease. It is hundreds of diseases that differ in cell of origin and mutations.
Frequently asked questions
What is Cancer Cell Biology?
Mutations in oncogenes and tumour suppressors disrupt cycle control, apoptosis and adhesion, producing uncontrolled growth.
Which area of biology covers Cancer Cell Biology, and how advanced is it?
Cancer Cell Biology is one of the 52 topics in Cell Biology. It is rated Advanced, so it suits learners who want specialist depth. Related topics in this area include Receptor Tyrosine Kinases, Telomeres and Senescence, Cell Cycle Checkpoints.
Can you give an example of Cancer Cell Biology?
BCR-ABL fusion in chronic myeloid leukaemia is blocked by the targeted drug imatinib.
What should I learn before Cancer Cell Biology?
Work through the Beginner topics in Cell Biology first, such as Cell Theory, Prokaryotic Cell, Eukaryotic Cell, then return to Cancer Cell Biology. Advanced topics assume the Intermediate vocabulary.
What topics are related to Cancer Cell Biology?
The closest topics to Cancer Cell Biology are Receptor Tyrosine Kinases, Telomeres and Senescence, Cell Cycle Checkpoints, Mitosis. Comparing them side by side is a good way to see how the ideas connect.
How can I check that I understand Cancer Cell Biology?
Read the summary and the in-depth section, then use the quick check on the interactive lesson for Cancer Cell Biology. To practise the whole of Cell Biology, use the Cell Biology quiz.
How is Cancer Cell Biology different from Receptor Tyrosine Kinases?
Cancer Cell Biology: Mutations in oncogenes and tumour suppressors disrupt cycle control, apoptosis and adhesion, producing uncontrolled growth. Receptor Tyrosine Kinases: Surface receptors that dimerise on ligand binding and autophosphorylate, triggering cascades like the Ras-MAPK pathway. Read both side by side and note what each one explains.
What is a common mistake about Cancer Cell Biology?
Thinking cancer is one disease. It is hundreds of diseases that differ in cell of origin and mutations.
How should I study Cancer Cell Biology step by step?
First, read the summary and write the definition in your own words. Second, read the in-depth section and note any example. Third, compare it with Receptor Tyrosine Kinases and explain the difference aloud. Finally, take the Cell Biology quiz and come back to this page for any question you miss.