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Paradoxical Role of Apoptosis in Tumor Progression by Katerina V. Gurova; Andrei V. Gudkov is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

What is Paradoxical Role of Apoptosis in Tumor Progression about?

## Abstract Tumors frequently acquire resistance to apoptosis that is expected to contribute to malignant phenotype and reduce sensitivity to treatment. In fact, inactivation of __p53__ tumor suppressor gene resulting in suppression of apoptosis serves as a negative prognostic marker. Surprisingly, expression of a strong anti‐apoptotic protein Bcl‐2, another mechanism to avoid apoptosis, was found to be associated with a favorable prognosis. This paradoxical anti‐progressor function of Bcl‐2 has been explained in literature based on the negative effect of Bcl‐2 on cell proliferation. Here, by analyzing accumulated experimental and clinical data, we provide evidence supporting another hypothesis that defines apoptosis as an accelerator of tumor progression. The mechanism of anti‐progressor function of Bcl‐2 is based on creation of tumors that maintain control of genomic stability by eliminating selective advantages for the cells that acquire resistance to apoptosis through loss of p53. Thus, inhibition of apoptosis does not lead to loss of genomic stability and creates tumor environment that no longer supports further tumor progression and inhibitors of apoptosis can be considered a

Who reads Paradoxical Role of Apoptosis in Tumor Progression?

Author

Katerina V. Gurova; Andrei V. Gudkov

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0730-2312)

Published

2002

Language

EN

Field

Biochemistry, Genetics and Molecular Biology (Life Sciences)