Office of Technology Management

The Solid Phase Rh Antigen
Summary:
This project sought to isolate the human Rh red cell antigen in a form which could be coupled to plastic surfaces yet retain full antigenic activity.  Such a preparation would make possible development of quantitative ELISA or RIA diagnostic kits for absolute quantitation of anti-Rh antibodies, eliminating the widely used subjective method of “titering”.  Further, it would make possible development of immunoadsorbents which could specifically purify anti-Rh antibodies for use in Rh negative women at risk for delivering a fetus affected by Hemolytic Disease of the Newborn and make possible development of inline absorbents to immediately remove anti-Rh antibodies in such patients.  To this end, we have successfully developed a  method for isolation of the Rh antigen in a soluble form and, in addition, developed a counterintuitive method for coupling the antigen to solid-phase plastic supports in a fully antigenic form.  The bound antigen is stable to a wide range of buffers, is fully antigenically active, and methodology for elution of bound antibodies has been developed.
 
Technology Status:
These patents are available for licensing from UT-Houston Health Science Center.

Patent Status:
Patent No. 5,840,585; 6,191,108 B1; 6,280,958

Inventor:
L. Scott Rodkey, Ph.D.