The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 13, 1999
Filed:
Mar. 24, 1995
Milcho S Mintchev, Gaithersburg, MD (US);
Organ, Inc., Chicago, IL (US);
American National Red Cross, Washington, DC (US);
Abstract
A cell is subjected to apoptosis, a genetically programmed autolysis of the cell. Cells of a specific type, classified by function, maturity, source, etc. can be effectively removed from a mixture of cells in a tissue or cell suspension by their different sensitivities to the pressure-time treatment. Donor tissue immunogenicity is eliminated by induction of apoptosis in immunoactive cells, such as antigen presenting cells in the donor tissue. When tissues, for example, blood products containing leukocytes or solid tissues containing dendritic cells, are pressure treated to induce apoptosis in the leukocyte or dendritic cell population, the leukocytes or dendritic cells lose their immunoactivity. Viral particles within the target cells, such as cytomegalovirus particles within the apoptosing leukocytes, are destroyed. Apoptosis can be induced, for example, by subjecting a material containing the target cells to a high pressure.