Use of bipyridine compound 'Caerulomycin A' derivatives and analogs thereof as immunosuppressive agents
申请人:Singla Kumar Arvind
公开号:US20070078167A1
公开(公告)日:2007-04-05
The present invention relates to an isolated bioactive molecule Caerulomycin A, derivatives and analogs thereof as effective immunosuppressive agents. The immunosuppressive property of the compound is targeted in particular against the lymphocytes, CD4
+
T cells, CD8
+
T cells and B cells and in the production of IL-4 and IFN-γ and antibodies. The compound operates through a mechanism by downregulating the expression of activation marker CD28 and upregulating the immunosuppressive marker CTLA-4. Caerulomycin A has previously been isolated from
Streptomyces caeruleus
and found to have useful antifungal activity. Prior to the present invention however, this compound had not been determined to have immunomodulatory activity.