ANTIBODY THERAPEUTICS WITH LOCAL ACTIVITY IN THE DIGESTIVE TRACT
This invention provides methods and compositions of antibody therapeutics that are therapeutically effective in the digestive tract or below the mucosal barrier of the digestive tract but do not deliver levels of antibody to the systemic circulation that have been shown to be necessary for clinical benefit following systemic administration of antibody. This invention further describes therapeutic compositions of antibody therapeutics that are therapeutically effective in the digestive tract or below the mucosal barrier of the digestive tract but do not deliver levels of antibody to the systemic circulation that have been associated with adverse events and systemic immunosuppression following systemic administration of antibody.
1 . A method of treating inflammatory bowel disease comprising administering an anti-TNF antibody to the digestive tract wherein the peak level of anti-TNF antibody in the patient's serum after administration of the anti-TNF antibody is less than about 1 μg/ml.
2 . The method of claim 1 , wherein administration of 3 or more doses of the anti-TNF antibody does not lower the efficacy of the anti-TNF antibody over a period of 6 months.
3 . The method of claim 1 , wherein the peak level of anti-TNF antibody detectable in the patient's serum after administration of the anti-TNF antibody is less than about 10 ng/ml.
4 . The method of claim 1 , wherein the anti-TNF antibody is administered orally or rectally.
5 . A method of treating inflammation of the digestive tract comprising administering an anti-TNF antibody to the digestive tract wherein the peak level of anti-TNF antibody in the patient's serum after administration of the anti-TNF antibody is less than about 1 μg/ml.
6 . The method of claim 5 , wherein administration of 3 or more doses of the anti-TNF antibody does not lower the efficacy of the anti-TNF antibody over a period of 6 months.
7 . The method of claim 5 , wherein the peak level of anti-TNF antibody detectable in the patient's serum after administration of the anti-TNF antibody is less than about 10 ng/ml.
8 . The method of claim 5 , wherein the anti-TNF antibody is administered orally or rectally.
9 . A method of treating a disease or disorder of the digestive tract in a patient comprising administering an anti-TNF antibody to the patient's digestive tract, wherein the peak level of antibody in the patient's serum after administration of the antibody is less than 1 μg/ml and wherein the disease or disorder is characterized by increased permeability of the mucosal barrier of the digestive tract.
10 . The method of claim 9 , wherein the increased permeability of the mucosal barrier of the digestive tract is due to inflammation.
11 . The method of claim 9 , wherein the increased permeability of the mucosal barrier of the digestive tract is due to mechanical trauma.
12 . The method of claim 9 wherein the increased permeability of the mucosal barrier of the digestive tract is present prior to inflammation of the digestive tract.