Humanized Influenza Monoclonal Antibodies (SJ-07-0004)





Technology Name
(St. Jude Reference #)
Humanized Influenza Monoclonal Antibodies (SJ-07-0004)
Description Highly pathogenic avian H5N1 influenza virus is a major public health concern. Given the lack of effective vaccine and recent evidence of antiviral drug resistance in some isolates, alternative strategies for containment of a possible future pandemic are needed. Humanized monoclonal antibodies (mAbs) that neutralize H5N1 virus could be used as prophylaxis and treatment to aid in the containment of such a pandemic.

Investigators from St. Jude Children's Research Hospital and DSO National Laboratories, Singapore developed two neutralizing humanized monoclonal antibodies. One against H5 hemagglutinin from A/Vietnam/1204/05 and the other against A/HongKong/213/03. Both antibodies retained specificity and exhibited prophylactic efficacy in mice.

Studies with these antibodies show passive antibody therapy can be an effective tool for both prophylaxis against- and treatment of- highly pathogenic H5N1 influenza virus, providing the immediate immunity needed which combined with social distancing could limit the transmission of H5N1 virus to others and contain a future influenza pandemic.
Keywords Influenza monoclonal antibody, influenza prophylactic, influenza treatment
Granted Patents or Published Applications Singapore Patent No. 149,928; pending U.S. Application published June 17, 2010 as US 2010/0150941
Related Scientific References Hanson, Brendon J., et.al, Passive immunoprophylaxis and therapy with humanized monoclonal antibody specific for influenza A H5 hemagglutinin in mice. Respir Res. 2006; 7(1): 126.
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Last update: September 2010