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Intracellular Routing of Cytotoxic Pancreatic-Type Ribonucleases

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In addition to their ribonucleolytic activity, several ribonucleases (RNases) play important roles in other specific biological activities, such as dendritic cell activation, certain pollen-induced allergies, blood vessel formation and defense against parasitic or microbial infections. Among these diverse actions, cytotoxic activity, which relies in most cases on ribonucleolytic activity, has attracted a considerable attention because of the potential for using RNases as therapeutic agents for the treatment of different malignancies. In addition to use naturally existing RNases, major efforts have been made in the development of engineered variants, which display more potent cytotoxic activity and greater selectivity for malignant cells. This review focuses on the molecular and cellular aspects of the internalization, intracellular trafficking and final sorting of cytotoxic RNases. Knowledge about the strategies used by these promising toxins provides us with essential information about the mechanisms that can be used to gain access to different subcellular compartments and intracellular sorting.

Keywords: cytotoxicity; internalization; intracellular routing; pancreatic-type ribonucleases

Document Type: Research Article

Publication date: June 1, 2008

More about this publication?
  • Current Pharmaceutical Biotechnology aims to cover all the latest and outstanding developments in Pharmaceutical Biotechnology. Each issue of the journal contains a series of timely in-depth reviews written by leaders in the field covering a range of current topics in both pre-clinical and clinical areas of Pharmaceutical Biotechnology. Current Pharmaceutical Biotechnology is an essential journal for academic, clinical, government and pharmaceutical scientists who wish to be kept informed and up-to-date with the latest and most important developments.

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