Volume 62, Issue 21 e202301857
Communication

Synthesis of Cationic Biphen[4, 5]arenes as Biofilm Disruptors

Xinbei Du

Xinbei Du

Department of Chemistry, Center for Supramolecular Chemistry and Catalysis, Shanghai University, Shanghai, 200444 P. R. China

State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, 100850 P. R. China

These authors contributed equally to this work.

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Mengke Ma

Mengke Ma

State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, 100850 P. R. China

These authors contributed equally to this work.

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Yahan Zhang

Yahan Zhang

State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, 100850 P. R. China

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Xiang Yu

Xiang Yu

Department of Chemistry, Center for Supramolecular Chemistry and Catalysis, Shanghai University, Shanghai, 200444 P. R. China

State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, 100850 P. R. China

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Longming Chen

Longming Chen

State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, 100850 P. R. China

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Han Zhang

Han Zhang

State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, 100850 P. R. China

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Zhao Meng

Zhao Meng

State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, 100850 P. R. China

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Xueshun Jia

Xueshun Jia

Department of Chemistry, Center for Supramolecular Chemistry and Catalysis, Shanghai University, Shanghai, 200444 P. R. China

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Junyi Chen

Corresponding Author

Junyi Chen

State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, 100850 P. R. China

Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education, Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin, 300387 P. R. China

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Qingbin Meng

Corresponding Author

Qingbin Meng

State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, 100850 P. R. China

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Chunju Li

Corresponding Author

Chunju Li

Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education, Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin, 300387 P. R. China

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First published: 16 March 2023
Citations: 10

Graphical Abstract

Cationic biphen[n]arenes were designed and synthesized, which could inhibit biofilm formation and eradicate stubborn mature biofilms. Moreover, their effective complexation with the conventional antibiotic cefazolin sodium could further enhance the biofilm disruption efficacy in vitro and synergistically improve the healing effect in E. coli-infected mice.

Abstract

Since bacteria in biofilms are inherently resistant to antibiotics and biofilm-associated infections pose a serious threat to global public health, new therapeutic agents and schemes are urgently needed to meet clinical requirements. Here two quaternary ammonium-functionalized biphen[n]arenes (WBPn, n=4, 5) were designed and synthesized with excellent anti-biofilm potency. Not only could they inhibit the assembly of biofilms, but also eradicate intractable mature biofilms formed by Gram-positive S. aureus and Gram-negative E. coli bacterial strains. Moreover, they could strongly complex a conventional antibiotic, cefazolin sodium (CFZ) with complex stability constants of (7.41±0.29)×104 M−1 for CFZ/WBP4 and (4.98±0.49)×103 M−1 for CFZ/WBP5. Combination of CFZ by WBP4 and WBP5 synergistically enhanced biofilm eradication performance in vitro and statistically improved healing efficacy on E. coli-infected mice models, providing a novel supramolecular strategy for combating biofilm-associated infections.

Data Availability Statement

Research data are not shared.

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