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

作者:Yeaman Michael R*; Filler Scott G; Chaili Siyang; Barr Kevin; Wang Huiyuan; Kupferwasser Deborah; Hennessey John P; Fu Yue; Schmidt Clint S; Edwards John E Jr; Xiong Yan Q; Ibrahim Ashraf S
来源:Proceedings of the National Academy of Sciences of the United States of America, 2014, 111(51): E5555-E5563.
DOI:10.1073/pnas.1415610111

摘要

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.

  • 出版日期2014-12-23
  • 单位UCLA

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