Mechanisms of NDV-3 vaccine efficacy in MRSA skin versus invasive infection

MR Yeaman, SG Filler, S Chaili… - Proceedings of the …, 2014 - National Acad Sciences
MR Yeaman, SG Filler, S Chaili, K Barr, H Wang, D Kupferwasser, JP Hennessey Jr, Y Fu…
Proceedings of the National Academy of Sciences, 2014National Acad Sciences
Increasing rates of life-threatening infections and decreasing susceptibility to antibiotics urge
development of an effective vaccine targeting Staphylococcus aureus. This study evaluated
the efficacy and immunologic mechanisms of a vaccine containing a recombinant
glycoprotein antigen (NDV-3) in mouse skin and skin structure infection (SSSI) due to
methicillin-resistant S. aureus (MRSA). Compared with adjuvant alone, NDV-3 reduced
abscess progression, severity, and MRSA density in skin, as well as hematogenous …
Increasing rates of life-threatening infections and decreasing susceptibility to antibiotics urge development of an effective vaccine targeting Staphylococcus aureus. This study evaluated the efficacy and immunologic mechanisms of a vaccine containing a recombinant glycoprotein antigen (NDV-3) in mouse skin and skin structure infection (SSSI) due to methicillin-resistant S. aureus (MRSA). Compared with adjuvant alone, NDV-3 reduced abscess progression, severity, and MRSA density in skin, as well as hematogenous dissemination to kidney. NDV-3 induced increases in CD3+ T-cell and neutrophil infiltration and IL-17A, IL-22, and host defense peptide expression in local settings of SSSI abscesses. Vaccine induction of IL-22 was necessary for protective mitigation of cutaneous infection. By comparison, protection against hematogenous dissemination required the induction of IL-17A and IL-22 by NDV-3. These findings demonstrate that NDV-3 protective efficacy against MRSA in SSSI involves a robust and complementary response integrating innate and adaptive immune mechanisms. These results support further evaluation of the NDV-3 vaccine to address disease due to S. aureus in humans.
National Acad Sciences