An efflux inhibitor of the MacAB pump in Salmonella enterica serovar Typhimurium

An efflux inhibitor of the MacAB pump in Salmonella enterica serovar Typhimurium
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鼠伤寒沙门氏菌 MacAB 泵的外排抑制剂

DOI:
10.1111/1348-0421.12765
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发表时间:
2020
影响因子:
2.6
通讯作者:
and Kunihiko Nishino
and Kunihiko Nishino
中科院分区:
医学4区
文献类型:
--
作者:
Ami Yamagishi;Sohei Nakano;Seiji Yamasaki;and Kunihiko Nishino

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多药外排泵通过主动分泌抗生素在细菌多药耐药中起重要作用。ATP结合盒型药物外排泵MacAB最初报告为大环内酯类特异性泵。还已知MacAB是鼠伤寒沙门氏菌经口感染后的毒力所必需的。在这里,我们进行了沙门氏菌MacAB抑制剂的筛选,并发现了一种化合物,增加了MacAB表达菌株对大环内酯类的敏感性。先前报道,MacAB需要抵抗过氧化物介导的体外生长,并且野生型沙门氏菌的上清液在H2O2中拯救amacAB突变体的生长缺陷。在本研究中,我们还发现MacAB抑制剂降低了上清液在H2O2中拯救Salmonellacells的能力。这种化合物可以更好地了解MacAB的功能。
Multidrug efflux pumps play an important role in bacterial multidrug resistance by actively excreting antibiotics. The ATP‐binding cassette–type drug efflux pump MacAB was originally reported as a macrolide‐specific pump. MacAB is also known to be required for the virulence ofSalmonella entericaserovar Typhimurium following oral infection in mice. Here, we performed a screening of inhibitors ofSalmonellaMacAB and found a compound that increased the susceptibility of a MacAB‐expressing strain to macrolides. It was previously reported that MacAB is required to resist peroxide‐mediated killingin vitroand that a supernatant of wild‐typeSalmonellarescues the growth defect of amacABmutant in H2O2. In this study, we also found that the MacAB inhibitor reduced the ability of the supernatant to rescueSalmonellacells in H2O2. This compound could lead to a better understanding of the function of MacAB.
DOI: 10.1128/jb.183.19.5639-5644.2001
发表时间: 2001-10-01
影响因子: 3.2
作者:
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