NDLI: The Role of the QseC Quorum-Sensing Sensor Kinase in Epinephrine-Enhanced Motility and Biofilm Formation by Escherichia coli

Content Provider	Springer Nature Link
Author	Yang, Kun Meng, Jun Huang, Yun chao Ye, Lian hua Li, Guang jian Huang, Jie Chen, Hua mei
Copyright Year	2014
Abstract	Biofilms play a pivotal role in infections related to devices. Biofilm formation in Escherichia coli is mediated by the quorum-sensing E. coli regulator C (QseC), the histidine sensor kinase that can sense epinephrine (EPI)/norepinephrine (NE). In this study, we evaluate the role of the QseC quorum-sensing sensor kinase in epinephrine-enhanced motility and biofilm formation by E. coli. An E. coli MC1000 qseC mutant was constructed. We investigated the role of the QseC in the formation of biofilms on the surface of medical-grade polyvinyl chloride using the E. coli K-12 MC1000 strain as well as a corresponding qseC mutant. Addition of EPI/NE increased biofilm formation by wild-type K-12 MC1000 but not by the isogenic qseC mutant. Scanning confocal laser microscopy corroborated these results by showing that EPI/NE addition significantly increased biofilm’s thickness. As expected, the addition of EPI/NE to the qseC mutant, which lacks the ability to sense the hormones, failed to stimulate biofilm formation. Since EPI/NE addition increased bacterial motility, we proposed that their stimulatory effects on biofilm formation occur by enhancing bacterial motility and altering biofilm architecture. We also found that EPI/NE regulate motility and the biofilm phenotype via QseC, as motility was diminished and biofilm formation was significantly decreased in a qseC deletion mutant. These results indicate that EPI/NE induce E. coli biofilm formation on the surface of polyvinyl chloride through QseC. Cross-talk between E. coli (quorum sensing) and host hormones may explain the pathogen-caused opportunistic infections that occur in patients with prosthetic devices used during hormone level fluctuations in the host.
Starting Page	391
Ending Page	398
Page Count	8
File Format	PDF
ISSN	10859195
Journal	Cell Biochemistry and Biophysics
Volume Number	70
Issue Number	1
e-ISSN	15590283
Language	English
Publisher	Springer US
Publisher Date	2014-03-28
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Escherichia coli Biofilms Quorum sensing Epinephrine Motility Biochemistry Pharmacology/Toxicology Biotechnology Cell Biology Biophysics and Biological Physics
Content Type	Text
Resource Type	Article
Subject	Cell Biology Medicine Biochemistry Biophysics

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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