Derek O'Hagan

Cationic microparticles: A potent delivery system for DNA vaccines

Singh, Manmohan, Briones, Maylene, Ott, Gary, O'Hagan, Derek

An approach involving the preparation of biodegradable microparticles with a cationic surface was developed to improve the delivery of adsorbed DNA into antigen-presenting cells after i.m. injection....

Mutants of Escherichia coli Heat-Labile Toxin Act as Effective Mucosal Adjuvants for Nasal Delivery of an Acellular Pertussis Vaccine: Differential Effects of the Nontoxic AB Complex and Enzyme Activity on Th1 and Th2 Cells

Ryan, Elizabeth J., McNeela, Edel, Murphy, Geraldine A., Stewart, Helen, O'hagan, Derek, Pizza, Mariagrazia, ...

Mucosal delivery of vaccines is dependent on the identification of safe and effective adjuvants that can enhance the immunogenicity of protein antigens administered by nasal or oral routes. In this...

Transcutaneous Immunization with Bacterial ADP-Ribosylating Exotoxins, Subunits, and Unrelated Adjuvants

Scharton-Kersten, Tanya, Yu, Jian-mei, Vassell, Russell, O'Hagan, Derek, Alving, Carl R., Glenn, Gregory M.

We have recently described a needle-free method of vaccination, transcutaneous immunization, consisting of the topical application of vaccine antigens to intact skin. While most proteins themselves...

Induction of Potent Immune Responses by Cationic Microparticles with Adsorbed Human Immunodeficiency Virus DNA Vaccines

O'Hagan, Derek, Singh, Manmohan, Ugozzoli, Mildred, Wild, Carl, Barnett, Susan, Chen, Minchao, ...

The effectiveness of cationic microparticles with adsorbed DNA at inducing immune responses was investigated in mice, guinea pigs, and rhesus macaques. Plasmid DNA vaccines encoding human...

Induction of Broad and Potent Anti-Human Immunodeficiency Virus Immune Responses in Rhesus Macaques by Priming with a DNA Vaccine and Boosting with Protein-Adsorbed Polylactide Coglycolide Microparticles

Otten, Gillis, Schaefer, Mary, Greer, Catherine, Calderon-Cacia, Maria, Coit, Doris, Kazzaz, Jina, ...

Several vaccine technologies were evaluated for their abilities to induce anti-human immunodeficiency virus Gag immune responses in rhesus macaques. While no vaccine alone was able to induce broad...

Characterization of Human Immunodeficiency Virus Gag-Specific Gamma Interferon-Expressing Cells following Protective Mucosal Immunization with Alphavirus Replicon Particles

Gupta, Soumi, Janani, Ramesh, Bin, Qian, Luciw, Paul, Greer, Catherine, Perri, Silvia, ...

A safe, replication-defective viral vector that can induce mucosal and systemic immune responses and confer protection against many infectious pathogens, such as human immunodeficiency virus type 1...

Cationic microparticles: A potent delivery system for DNA vaccines

Singh, Manmohan, Briones, Maylene, Ott, Gary, O'Hagan, Derek

An approach involving the preparation of biodegradable microparticles with a cationic surface was developed to improve the delivery of adsorbed DNA into antigen-presenting cells after i.m. injection....

Mutants of Escherichia coli Heat-Labile Toxin Act as Effective Mucosal Adjuvants for Nasal Delivery of an Acellular Pertussis Vaccine: Differential Effects of the Nontoxic AB Complex and Enzyme Activity on Th1 and Th2 Cells

Ryan, Elizabeth J., McNeela, Edel, Murphy, Geraldine A., Stewart, Helen, O'hagan, Derek, Pizza, Mariagrazia, ...

Mucosal delivery of vaccines is dependent on the identification of safe and effective adjuvants that can enhance the immunogenicity of protein antigens administered by nasal or oral routes. In this...

Transcutaneous Immunization with Bacterial ADP-Ribosylating Exotoxins, Subunits, and Unrelated Adjuvants

Scharton-Kersten, Tanya, Yu, Jian-mei, Vassell, Russell, O'Hagan, Derek, Alving, Carl R., Glenn, Gregory M.

We have recently described a needle-free method of vaccination, transcutaneous immunization, consisting of the topical application of vaccine antigens to intact skin. While most proteins themselves...

Induction of Potent Immune Responses by Cationic Microparticles with Adsorbed Human Immunodeficiency Virus DNA Vaccines

O'Hagan, Derek, Singh, Manmohan, Ugozzoli, Mildred, Wild, Carl, Barnett, Susan, Chen, Minchao, ...

The effectiveness of cationic microparticles with adsorbed DNA at inducing immune responses was investigated in mice, guinea pigs, and rhesus macaques. Plasmid DNA vaccines encoding human...

Induction of Broad and Potent Anti-Human Immunodeficiency Virus Immune Responses in Rhesus Macaques by Priming with a DNA Vaccine and Boosting with Protein-Adsorbed Polylactide Coglycolide Microparticles

Otten, Gillis, Schaefer, Mary, Greer, Catherine, Calderon-Cacia, Maria, Coit, Doris, Kazzaz, Jina, ...

Several vaccine technologies were evaluated for their abilities to induce anti-human immunodeficiency virus Gag immune responses in rhesus macaques. While no vaccine alone was able to induce broad...

Characterization of Human Immunodeficiency Virus Gag-Specific Gamma Interferon-Expressing Cells following Protective Mucosal Immunization with Alphavirus Replicon Particles

Gupta, Soumi, Janani, Ramesh, Bin, Qian, Luciw, Paul, Greer, Catherine, Perri, Silvia, ...

A safe, replication-defective viral vector that can induce mucosal and systemic immune responses and confer protection against many infectious pathogens, such as human immunodeficiency virus type 1...

Vaccines with the MF59 Adjuvant Do Not Stimulate Antibody Responses against Squalene

Del Giudice, Giuseppe, Fragapane, Elena, Bugarini, Roberto, Hora, Maninder, Henriksson, Thomas, Palla, Emanuela, ...

Squalene is a naturally occurring oil which has been used in the development of vaccine adjuvants, such as the oil-in-water emulsion MF59. In past years, by use of noncontrolled and nonvalidated...

Enhanced mucosal and systemic immune responses to Helicobacter pylori antigens through mucosal priming followed by systemic boosting immunizations

Vajdy, Michael, Singh, Manmohan, Ugozzoli, Mildred, Briones, Maylene, Soenawan, Elawati, Cuadra, Lina, ...

It is estimated that Helicobacter pylori infects the stomachs of over 50% of the world's population and if not treated may cause chronic gastritis, peptic ulcer disease, gastric adenocarcinoma and...

Adjuvant is necessary for a robust immune response to a single dose of H1N1 pandemic flu vaccine in mice

Dormitzer, Philip R., Rappuoli, Rino, Casini, Daniele, O'Hagan, Derek, Runham, Celene, Montomoli, Emanuele, ...

Pandemic H1N1 influenza vaccine antigens are currently being manufactured. The MF59 adjuvant has an established safety profile in humans and a proven ability to increase responses to some influenza...