Columbia University

James J Taub

Martin Chalfie

Charles Ma

Jang-Hee Hahn

Jonathan Rothblatt

This invention provides a composition comprising an amount of a polypeptide effective to increase the life-span of cells wherein the polypeptide has the amino acid sequence of a cytosolic catalase and a suitable carrier. This invention also provides an isolated nucleic acid molecule encoding a cytosolic catalase. This invention also provides a host vector system for the production of a polypeptide having the biological activity of catalase which comprises the above-described vectors in a suitable host. This invention also provides a method for prolonging cell life, comprising: (a) linking the above-described nucleic acids to a regulatory element such that the expression of the above-described nucleic acids is under the control of the regulatory element; and (b) introducing the linked nucleic acid into cells for expression of the nucleic acid, thereby prolonging cell life.

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Neptune, NJ, United States of America

James J Taub