Oncogenic proteins new targets for chemotherapeutic agents against cancer.

Abstract:

:Over the past 10 years, more than 40 potentially oncogenic genes, termed protooncogenes, have been identified in the human genome. Little is known of the physiological role of the proteins encoded by these genes, but they seem to be involved in the reception and transmission of hormonal and other environmental information from the cell membrane to the nucleus. These proteins may acquire transforming properties when over-expressed or if structurally altered following partial deletions or point mutations. Cytogenetic analysis shows loss of genetic material from specific chromosomal loci in many human tumors, suggesting that the absence of a functional gene at these loci may permit tumor development. The genes involved have been termed "anti-oncogenes". Understanding the control mechanisms of cell proliferation is essential in order to understand how cancer cells escape from this control. To this end, numerous oncogenes have been cloned, permitting the production of modified forms of oncogenic proteins and identification of the regions essential for their biological activity. Availability of large amounts of protein also allows the production of specific antibody which can be used to verify whether blockage of a given protein results in reversion of the transformed phenotype. If it can be shown that the expression of an oncogenic protein is essential for transformation, it should be possible to search for molecules that inhibit its action or which mimic the effects of an anti-oncogene. This type of research is already well advanced for the oncogenic ras proteins, and models have been established that permit both screening for potential inhibitors and design of specific antagonists.

journal_name

Fundam Clin Pharmacol

authors

Rey I,Soubigou P,Cartwright T,Tocqué B

doi

10.1111/j.1472-8206.1990.tb00694.x

subject

Has Abstract

pub_date

1990-01-01 00:00:00

pages

401-22

issue

4

eissn

0767-3981

issn

1472-8206

journal_volume

4

pub_type

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