File:Two hit malignant transformation with chromosome loss.png
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English: Loss of a tumor suppressor gene locus according to the two-hit model: In the first hit, the tumor suppressor gene on one of the two chromosomes is affected by a mutation that makes the gene product non-functional. This mutation may arise spontaneously as a DNA replication error or may be induced by a DNA damaging agent. The second hit removes the remaining wild-type chromosome, for example through a mitotic nondisjunction event. There are several other potential mechanisms for each of the two steps, for example an additional mutation, an unbalanced translocation, or a gene deletion by recombination. As a result of the double lesion, the cell may become malignant because it is no longer able to express the tumor suppressor protein. |
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| Source | Own work |
| Author | Wpeissner |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 19:20, 6 May 2014 | | 1,217 × 526 (34 KB) | Wpeissner (talk | contribs) | User created page with UploadWizard |
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