Detail publikace

CdSe QD biosynthesis in yeast using tryptone-enriched media and their conjugation with a peptide hecate for bacterial detection and killing

SUR, V. KOMÍNKOVÁ, M. BUCHTOVÁ, Ž. DOLEŽELÍKOVÁ, K. ZÍTKA, O. MOULICK, A.

Originální název

CdSe QD biosynthesis in yeast using tryptone-enriched media and their conjugation with a peptide hecate for bacterial detection and killing

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

The physical and chemical synthesis methods of quantum dots (QDs) are generally unfavorable for biological applications. To overcome this limitation, the development of a novel "green" route to produce highly-fluorescent CdSe QDs constitutes a promising substitute approach. In the present work, CdSe QDs were biosynthesized in yeast Saccharomyces cerevisiae using a novel method, where we showed for the first time that the concentration of tryptone highly affects the synthesis process. The optimum concentration of tryptone was found to be 25 g/L for the highest yield. Different methods were used to optimize the QD extraction from yeast, and the best method was found to be by denaturation at 80 degrees C along with an ultrasound needle. Multiple physical characterizations including transmission electron microscopy (TEM), dynamic light scattering (DLS), energy-dispersive X-ray spectroscopy (EDX), and spectrophotometry confirmed the optical features size and shape distribution of the QDs. We showed that the novel conjugate of the CdSe QDs and a cell-penetrating peptide (hecate) can detect bacterial cells very efficiently under a fluorescent microscope. The conjugate also showed strong antibacterial activity against vancomycin-resistant Staphylococcus aureus (VRSA), methicillin-resistant Staphylococcus aureus (MRSA), and Escherichia coli, which may help us to cope with the problem of rising antibiotic resistance.

Klíčová slova

biosynthesis; tryptone; QDs; cell-penetrating peptide; antibacterial

Autoři

SUR, V.; KOMÍNKOVÁ, M.; BUCHTOVÁ, Ž.; DOLEŽELÍKOVÁ, K.; ZÍTKA, O.; MOULICK, A.

Vydáno

31. 10. 2019

Nakladatel

MDPI

ISSN

2079-4991

Periodikum

Nanomaterials

Ročník

9

Číslo

10

Stát

Švýcarská konfederace

Strany od

1

Strany do

15

Strany počet

15

URL

https://www.mdpi.com/2079-4991/9/10/1463

Plný text v Digitální knihovně

http://hdl.handle.net/11012/184080

BibTex

@article{BUT160566,
  author="Vishma Pratap {Sur} and Markéta {Komínková} and Žaneta {Buchtová} and Kristýna {Doleželíková} and Ondřej {Zítka} and Amitava {Moulick}",
  title="CdSe QD biosynthesis in yeast using tryptone-enriched media and their conjugation with a peptide hecate for bacterial detection and killing",
  journal="Nanomaterials",
  year="2019",
  volume="9",
  number="10",
  pages="1--15",
  doi="10.3390/nano9101463",
  issn="2079-4991",
  url="https://www.mdpi.com/2079-4991/9/10/1463"
}