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Stem Cell Related Patent Number US5925548
| Title: | Modified receptors that continuously signal | | Inventors: | Beutler, Bruce A.; Dallas, TX, USA
Bazzoni, Flavia M.; Dallas, TX, USA | | Summary: | Described herein are novel constructs for stimulating the signaling in cells, and which are comprised of a cytokine receptor cytoplasmic domain linked to a multimerizing extracellular domain. The invention relates to chimeric polypeptides with engineered cell surface receptors that are active in the absence of the cytokine, hormone or molecule that normally activates the receptor, such that these receptors are engineered to form multimers at the cell surface. Further disclosed are fusion proteins in which the stem, transmembrane domain and cytoplasmic domain are derived from a TNF receptor, and in which the extracellular, multimerizing domain is derived from an erythropoietin receptor. Claims of the invention include strong cytotoxic effects which result from the transfection of such fusion protein constructs into cells. Also provided are properties of associated DNA, protein and cellular compositions, and methods of their production as well as therapeutic and experimental applications. | | Abstract: | Engineered cell surface receptors are described that are constitutively active in the absence of the cytokine, hormone or molecule that normally activates the receptor. Receptors that constitutively signal are generally created by engineering the receptor to form multimers at the cell surface. Disclosed are various DNA, protein and cellular compositions and methods of making and using such constitutively active receptors. Particular examples are fusion proteins in which the stem, transmembrane domain and cytoplasmic domain are derived from a TNF receptor, and the extracellular, multimerizing domain is derived from an erythropoietin receptor. Transfection of such fusion protein constructs into cells is shown to result in a strong cytotoxic effect. | | US Patent Website: | Click Here for Full Text of Patent | | Title Number: | US5925548 | | Application Number: | US1996000762308 | | Date Filed: | 09/12/1996 | | Date Published: | 20/07/1999 | | Assignee: | Board of Regents, The University of Texas System, Austin, TX, USA |
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