Use of low dose IL-2 for treating autoimmune-related or inflammatory disorders
The present invention relates to novel therapies for treating autoimmune and inflammatory diseases. More specifically, the present invention relates to a use of low dose interleukin-2 for the treatment of type I diabetes and other autoimmune and/or inflammatory diseases.
1. A method for stimulating regulatory T lymphocytes (Treg) in a human patient, the method comprising administering an interleukin-2 (IL2) to a human patient in need thereof at a dose of between 0.1 and 3.5 MIU/day in a first course of treatment, which comprises administration of the IL-2 once per day for at least three consecutive days, wherein the first course of treatment increases Treg cells in the subject; and wherein the first course of treatment is followed by a maintenance dose of the IL-2, and wherein the maintenance dose is given to the human patient once every week to every four weeks.
2. The method of claim 1 , wherein the dose of IL-2 in the first course of treatment is between 1.5 to 3 MIU/day.
3. The method of claim 2 , wherein the dose of IL-2 in the first course of treatment is 2 MIU/day.
4. The method of claim 1 , wherein the first course of treatment comprises administration of the IL-2 to the human patient for 3 to 7 days.
5. The method of claim 4 , wherein the first course of treatment comprises administration of IL-2 to the human patient for 4 to 5 days.
6. The method of claim 1 , wherein the first course of treatment is reproduced at multiple time periods.
7. The method of claim 6 , wherein every two consecutive time periods in the multiple time periods are interrupted by a period with no treatment.
8. The method of claim 1 , wherein the maintenance dose starts 1 to 4 weeks after the last dose of the first course of treatment.
9. The method of claim 1 , wherein the maintenance dose is the same as the dose in the first course of treatment.
10. The method of claim 1 , wherein the first course of treatment increases the ratio of Tregs to effector T (Teff) cells by at least 20%.
11. The method of claim 1 , further comprising assessing increase of Treg cells in the human patient.
12. The method of claim 11 , wherein the assessing step is performed by measuring the level of Treg cells in the human patient.
13. The method of claim 11 , wherein the assessing step is performed by measuring the ratio between Treg cells and Teff cells.
14. The method of claim 1 , wherein the human patient has a neurodegenerative disease.
15. The method of claim 1 , wherein the IL-2 is a human IL-2.
16. The method of claim 1 , wherein the IL-2 is aldesleukin.