LysGH15 kills Staphylococcus aureus without being affected by the humoral immune response or inducing inflammation.
LysGH15 kills Staphylococcus aureus without being affected by the humoral immune response or inducing inflammation.
复制标题
LysGH15 可杀死金黄色葡萄球菌，而不会受到体液免疫反应的影响或诱导炎症
DOI：
10.1038/srep29344
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发表时间：
2016-07-07
影响因子：
4.6
通讯作者：
Gu J
中科院分区：
文献类型：
--
作者：
Zhang L;Li D;Li X;Hu L;Cheng M;Xia F;Gong P;Wang B;Ge J;Zhang H;Cai R;Wang Y;Sun C;Feng X;Lei L;Han W;Gu J
The lysin LysGH15, derived from the staphylococcal phage GH15, exhibits a wide lytic spectrum and highly efficient lytic activity against methicillin-resistant Staphylococcus aureus (MRSA). Here, we found that LysGH15 did not induce resistance in MRSA or methicillin-sensitive S. aureus (MSSA) strains after repeated treatment. Although LysGH15 triggered the generation of LysGH15-specific antibodies in mice, these antibodies did not block lytic activity in vitro (nor the binding capacity of LysGH15). More importantly, when the antibody titre was highest in mice immunized with LysGH15, a single intravenous injection of LysGH15 was sufficient to protect mice against lethal infection with MRSA. These results indicated that LysGH15-specific antibodies did not affect the killing efficiency of LysGH15 against MRSA in vitro or in vivo. LysGH15 also reduced pro-inflammatory cytokines in mice with lethal infections. Furthermore, a high-dose LysGH15 injection did not cause significant adverse effects or pathological changes in the main organs of treated animals. These results provide further evidence for the administration of LysGH15 as an alternative strategy for the treatment of infections caused by MRSA.
