Using Antibodies to Protect Transplanted Organs from Damage

A medical method for preserving transplanted organs by using specific antibodies to block a protein that causes inflammation and blood vessel leakage.

What it covers

This patent describes a way to keep a donated organ healthy after it is moved into a patient's body. It focuses on using a specific type of antibody that targets a protein called Angiopoietin-2 (Ang-2). When an organ is transplanted, it often suffers from ischemia, which is a lack of blood flow, followed by damage when blood flow returns. The method involves bathing or perfusing the organ with these antibodies to stop Ang-2 from making blood vessels leaky and causing harmful inflammation.

What it doesn't cover

• —Does not cover antibodies that bind to Angiopoietin-1 (Ang-1).
• —Does not cover treatments that do not use the specific variable heavy and light chain sequences defined in the patent.
• —Does not cover systemic administration of the drug to the patient's entire body, only the perfusion of the allograft itself.

The clever bit

The innovation lies in the specific selection of an antibody that neutralizes Ang-2 while ignoring Ang-1, preventing the 'leaky vessel' effect without disrupting the healthy blood vessel maintenance provided by Ang-1.

Why it matters

Organ rejection is a major hurdle in transplant medicine. By targeting the specific molecular signals that cause blood vessels to fail during the transplant process, this method aims to improve the survival rate of donated organs like hearts, kidneys, or livers.

Real-world examples

• 1.Experimental organ preservation solutions used in transplant surgery research.