Journal of Tropical Oceanography >
Anti-quorum sensing active substances from a marine-derived actinobacterium Nocardiopsis dassonvillei JS106
Copy editor: YAO Yantao
Received date: 2022-02-13
Revised date: 2022-04-23
Online published: 2022-04-28
Supported by
Open Project of Key Laboratory of Marine Medicine, Guangdong Province and Key Laboratory of Tropical Marine Bio-resources and Ecology, Chinese Academy of Sciences(2018011008)
Quorum sensing inhibitors (QSIs) can regulate the pathogenicity by mediating the bacterial quorum sensing system, and it is not easy to cause resistance mutations. To deal with the bacterial drug resistance, QSIs might be useful in treating or cooperated treating bacterial infections. In this study, the anti-quorum sensing substances from a marine derived actinobacterium Nocardiopsis dassonvillei JS106 was investigated. Six compounds, 1, 6-dihydroxyphenazine (1), 6-hydroxy-1-methoxyphenazine (2), 4', 7-dimethoxyisoflavone (3), N-(2-hydroxyphenyl) acetamide (4), 1-methoxyphenazine (5) and 2-aminophenoxazin-3-one (6), were isolated from the spent culture medium of JS106 using VLC and HPLC. All of the pure compounds showed significant anti-quorum sensing activity that inhibited the violacein production of Chromobacterium violaceum ATCC 12472 without visible growth inhibition at the test concentrations. N. dassonvillei JS106 can produce many phenazines and has higher potential in anti-quorum sensing application.
Keywords marine actinomycetes; bioactivity; anti-quorum sensing activity; Nocardiopsis; phenazines
MIAO Li , QIAN Jiaxing , MO Jie , ZHOU Heng , QIAN Shenghui , DONG Kunming . Anti-quorum sensing active substances from a marine-derived actinobacterium Nocardiopsis dassonvillei JS106[J]. Journal of Tropical Oceanography, 2023 , 42(1) : 145 -151 . DOI: 10.11978/2022023
图1 减压柱层析所得各组分的抗群体感应活性a—d指代Tukey检验的结果, 同一字母表示无显著性差异。照片显示组分F4—F8的活性测试结果, F0为分离前的粗样 Fig. 1 The anti-quorum sensing activity of the fractions obtained from vacuum liquid chromatography a~d represent the results of Tukey’s test, bars with the same alphabet mean no significant difference. Picture of disc diffusion assay shows the bioassay result of fractions F4~F8. F0 represents the crude extract before separation |
图3 化合物1—6对紫色色杆菌产紫色素的抑制活性B: 空白培养基; N: 阴性对照(4μL DMSO); 1—5: 化合物1—5 (200μg·mL-1); 6-50: 化合物6 (50μg·mL-1); 6-200: 化合物6 (200μg·mL-1); C-50: 寻霉素A标准品(50μg·mL-1); C-200: 寻霉素A标准品(200μg·mL-1); C: 寻霉素A标准品。a—d指代Tukey检验的结果, 同一字母表示无显著性差异 Fig. 3 Inhibitory activities of compounds 1~6 C: questiomycin A standard; B: fresh medium; N: negative control (4 μL dimethyl sulfoxide); 1~5: compounds 1~5 (200 μg·mL-1); |
[1] |
李德利, 丁鹏敏, 刘双月, 等, 2020. 人肠道微生物中抗菌活性菌株的筛选及其代谢产物研究[J]. 中国现代中药, 22(1): 26-34.
|
[2] |
李艳群, 陈柔雯, 林宗豪, 等, 2021. 一株群体感应抑制活性海洋放线菌的筛选与鉴定[J]. 热带海洋学报, 40(1): 75-81.
|
[3] |
刘海珊, 朱国良, 赵水鸽, 等, 2019. 海绵放线菌Nocardiopsis dassonvillei OUCMDZ-4534的活性天然产物[J]. 有机化学, 39(2): 507-514.
|
[4] |
马忠俊, 孟大利, 王玉霞, 等, 2003. 苦马豆根和茎中化学成分的研究[J]. 沈阳药科大学学报, 20(2): 104-106.
|
[5] |
裴召苓, 陈雷, 许嘉磊, 等, 2017. 2株海鞘来源放线菌Streptomyces coelicoflavus和Nocardiopsis dassonvillei的次级代谢产物及其生物活性研究[J]. 中国海洋药物, 36(2): 55-60.
|
[6] |
王聪, 雷福厚, 谭学才, 等, 2019. 海洋拟诺卡菌来源的天然产物[J]. 中国抗生素杂志, 44(7): 763-769.
|
[7] |
王柯, 李元, 吴剑波, 2007. 微生物来源白细胞介素-4受体拮抗剂的筛选[J]. 中国新药杂志, 16(14): 1088-1090.
|
[8] |
周恒, 2020. 海洋底泥放线菌抗群体感应活性及次级代谢产物的研究[D]. 扬州: 扬州大学.
|
[9] |
|
[10] |
|
[11] |
|
[12] |
|
[13] |
|
[14] |
|
[15] |
|
[16] |
|
[17] |
|
[18] |
|
[19] |
|
[20] |
|
[21] |
|
[22] |
|
[23] |
|
[24] |
|
[25] |
|
[26] |
|
[27] |
|
[28] |
|
/
〈 | 〉 |