Selective capture and enrichment of proteins expressed on the cell surface
First Claim
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1. A method for obtaining cell surface proteins comprising the steps of:
- a) mixing intact cell sample with a periodate forming a mixture,b) reacting the mixture with a reagent forming a binding complex, and wherein the reagent is selected from a group consisting of hydrazide and amine,c) isolating the proteins with a reduction reagent from the binding complex, wherein the isolated proteins in the reduction reagent are cell surface protein.
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Abstract
The present invention provides a method for enriching cell surface proteins by oxidizing glycosylated protein with periodate. The present invention further provides that the cell surface proteins are obtained from intact cells either from cell lines or from tissues. The present invention provides a method not only capable of obtaining increased quantities of the cell surface proteins, but also capable of obtaining a wide ranges of proteins that are not detectable by other means.
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7 Claims
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1. A method for obtaining cell surface proteins comprising the steps of:
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a) mixing intact cell sample with a periodate forming a mixture, b) reacting the mixture with a reagent forming a binding complex, and wherein the reagent is selected from a group consisting of hydrazide and amine, c) isolating the proteins with a reduction reagent from the binding complex, wherein the isolated proteins in the reduction reagent are cell surface protein. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for obtaining cell surface proteins comprising the steps of:
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a) obtaining a homogenous cell population from a biological samples, which are intact cell, b) mixing intact cell sample with a periodate forming a mixture, c) reacting the mixture with a reagent forming a binding complex, and wherein the reagent is selected from a group consisting of hydrazide and amine, d) isolating the proteins with a reduction reagent from the binding complex, wherein the isolated proteins in the reduction reagent are cell surface protein.
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Specification