J 2020

One-pot synthesis of natural amine-modified biocompatible carbon quantum dots with antibacterial activity

GAGIC, M., S. KOCIOVA, K. SMERKOVA, H. MICHALKOVA, M. SETKA et. al.

Basic information

Original name

One-pot synthesis of natural amine-modified biocompatible carbon quantum dots with antibacterial activity

Authors

GAGIC, M., S. KOCIOVA, K. SMERKOVA, H. MICHALKOVA, M. SETKA, P. SVEC, Jan PŘIBYL (203 Czech Republic, guarantor, belonging to the institution), J. MASILKO, R. BALKOVA, Z. HEGER, L. RICHTERA, V. ADAM and V. MILOSAVLJEVIC

Edition

Journal of Colloid and Interface Science, SAN DIEGO, Elsevier, 2020, 0021-9797

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10403 Physical chemistry

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 8.128

RIV identification code

RIV/00216224:14740/20:00118337

Organization unit

Central European Institute of Technology

UT WoS

000581780400004

Keywords in English

Carbon quantum dots; Amines; Thermal decomposition; Toxicity; Antibacterial activity; ROS

Tags

Tags

International impact, Reviewed
Změněno: 10/10/2024 11:25, Ing. Monika Szurmanová, Ph.D.

Abstract

V originále

In the present study, the thermal decomposition of citric acid in the presence of biogenic amine was used to synthesize four different functionalized carbon quantum dots (CQDs), namely, histamine-(HCQDs), putrescine-(PCQDs), cadaverine-(CCQDs) and spermine-(SCQDs). The thermal decomposition of the precursors resulted in a decrease in stability and the formation of surface amides via a cross-linking process between the carboxyl and amine groups. The deposition of biogenic amines was confirmed by a structural characterization of the synthesized CQDs. The resulting CQDs, with a net zero charge, exhibited excellent stability in environments with different pH values. Through a set of different cytotoxicity tests, the absence of gene mutations, apoptosis, necrosis or disruption in cell membranes revealed the high biocompatibility of the CQDs. The antimicrobial activity of the synthesized CQDs was investigated against different bacterial species (Staphylococcus aureus, Escherichia coli, and Klebsiella pneumonia). We determined the growth kinetics, production of reactive oxygen species (ROS), cell viability and changes in membrane integrity by scanning electron microscopy (SEM). The minimal inhibitory concentrations (MICs) for S. aureus ranged from 3.4 to 6.9 mu g/mL. Regarding E. coli and K. pneumonia, all CQD formulations reduced growth, and the MICs were determined for CCQDs and HCQDs (6.9-19.4 mu g/mL). The antibacterial activity mechanism was attributed to the oxidative stress generated after CQD treatment, which resulted in the destabilization of the bacterial membrane. The bacterial permeability to propidium iodide indicated a change in membrane integrity, and the effect of CQDs on the morphology of the bacterial cells was evidenced by SEM. (C) 2020 Elsevier Inc. All rights reserved.

Links

LM2018127, research and development project
Name: Česká infrastruktura pro integrativní strukturní biologii (Acronym: CIISB)
Investor: Ministry of Education, Youth and Sports of the CR
LQ1601, research and development project
Name: CEITEC 2020 (Acronym: CEITEC2020)
Investor: Ministry of Education, Youth and Sports of the CR
90127, large research infrastructures
Name: CIISB II