Attenuating the Streptococcus pneumoniae Competence Regulon Using Urea-Bridged Cyclic Dominant-Negative Competence-Stimulating Peptide Analogs.
Attenuating the Streptococcus pneumoniae Competence Regulon Using Urea-Bridged Cyclic Dominant-Negative Competence-Stimulating Peptide Analogs.
复制标题
使用尿素桥梁的循环显性(刺激肽类似物)来减弱肺炎链球菌的能力调节。
DOI:
10.1021/acs.jmedchem.2c00148
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发表时间:
2022-05-12
影响因子:
7.3
通讯作者:
Tal-Gan Y
中科院分区:
文献类型:
--
作者:
Lella M;Oh MW;Kuo SH;Lau GW;Tal-Gan Y
Streptococcus pneumoniae (pneumococcus) is a prevalent human pathogen that utilizes the competence regulon quorum sensing circuitry to acquire antibiotic resistance and initiate its attack on the human host. Therefore, targeting the competence regulon can be applied as an anti-infective approach with minimal pressure for resistance development. Herein, we report the construction of a library of urea-bridged cyclic dominant-negative competence stimulating peptide (dnCSP) derivatives and their evaluation as competitive inhibitors of the competence regulon. Our results reveal the first pneumococcus dual-action CSPs, inhibiting the group 1 pneumococcus competence regulon, while activating the group 2 pneumococcus competence regulon. Structural analysis indicate that the urea-bridge cyclization stabilizes the bioactive α-helix conformation, while in vivo studies using a mouse model of infection exhibit that the lead dual-action dnCSP, CSP1-E1A-cyc(Dab6Dab10), attenuates group 1 mediated mortality without significantly reducing the bacterial burden. Overall, our results pave the way to developing novel therapeutics against this notorious pathogen.
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影响因子:
4.4
作者:
Junges, R.;Sturod, K.;Petersen, F. C.
通讯作者:
Petersen, F. C.
影响因子:
3.2
作者:
Lee, MS;Morrison, DA
通讯作者:
Morrison, DA
DOI:
10.1084/jem.54.5.681
发表时间:
1931-10-31
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Dawson MH;Sia RH
通讯作者:
Sia RH
影响因子:
15.8
作者:
Feikin, Daniel R.;Kagucia, Eunice W.;Moore, Matthew R.
通讯作者:
Moore, Matthew R.
影响因子:
30.3
作者:
Domenech, Arnau;Brochado, Ana Rita;Veening, Jan-Willem
通讯作者:
Veening, Jan-Willem