Monteiro, C., Costa, F., Pirttilä, A., Tejesvi, M., Martins, M. (2019) Prevention of urinary catheter-associated infections by coating antimicrobial peptides from crowberry endophytes. Scientific reports 9(1), 10753. doi:10.1038/s41598-019-47108-5
Prevention of urinary catheter-associated infections by coating antimicrobial peptides from crowberry endophytes
|Author:||Monteiro, Claudia1,2; Fabíola Costa, Fabíola Costa1,2; Pirttilä, Anna Maria3;|
1i3S, Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
2INEB, Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal
3Department of Ecology and Genetics, University of Oulu, Oulu, Finland
4CHAIN ANTIMICROBIALS ltd, Teknologiantie 2, Oulu, 90590, Finland
5Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
|Online Access:||PDF Full Text (PDF, 2 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe2019102935542
|Publish Date:|| 2019-10-29
Urinary catheters are extensively used in hospitals, being responsible for about 75% of hospital-acquired infections. In this work, a de novo designed antimicrobial peptide (AMP) Chain201D was studied in the context of urinary catheter-associated infections. Chain201D showed excellent antimicrobial activity against relevant ATCC strains and clinical isolates of bacteria and yeast and demonstrated high stability in a wide range of temperatures, pH and salt concentrations. Moreover, the bactericidal activity of Chain201D immobilized on a model surface was studied against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus), some of the most prevalent strains found in urinary catheter-associated infections. Chain201D was successfully tethered to ((1-mercapto-11-undecyl)-(tetra(ethylene glycol) (EG4)) terminated self-assembled monolayers (SAMs), (EG4-SAMs), activated by 1,1′-Carbonyldiimidazole (CDI) at different concentrations. Chain201D surfaces can bind and kill by contact a high percentage of adherent bacteria. These achievements are obtained without any peptide modification (for chemoselective conjugation) and without the use of a spacer. Moreover, increased amounts of immobilized AMP lead to higher numbers of adhered/dead bacteria, revealing a concentration-dependent behaviour and demonstrating that Chain201D has excellent potential for developing antimicrobial urinary catheters.
|Type of Publication:||
A1 Journal article – refereed
|Field of Science:||
1183 Plant biology, microbiology, virology
AntINFECT: Bioengineered Advanced Therapies for Problematic Infected Wounds POCI-01-0145-FEDER-031781) and Institute for Research and Innovation in Health Sciences (UID/BIM/04293/2019). C. Monteiro would like to acknowledge national funding through FCT – Fundação para a Ciência e a Tecnologia, I.P., provided by the contract-program and according to numbers 4, 5 and 6 of art. 23 of Law no. 57/2016 of 29th August, as amended by Law no. 57/2017 of 19th July. Professor Paula Gomes from Faculdade de Ciências da Universidade do Porto (FC-UP), Porto Peptide Synthesis Facility (POP-UP) for CEM 7 peptide. The funding received from Tekes, Finland (3331/31/2014) is thankfully acknowledged.
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