Biological phosphorylated molecules participate in the biomimetic and biological synthesis of cadmium sulphide quantum dots by promoting H2S release from cellular thiols

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dc.contributor.authorVenegas, F.A.
dc.contributor.authorSaona, L.A.
dc.contributor.authorMonrás, J.P.
dc.contributor.authorÓrdenes-Aenishanslins, N.
dc.contributor.authorGiordana, M.F.
dc.contributor.authorUlloa, G.
dc.contributor.authorCollao, B.
dc.contributor.authorBravo, D.
dc.contributor.authorPérez-Donoso, J.M.
dc.date.accessioned2018-02-01T18:39:12Z
dc.date.available2018-02-01T18:39:12Z
dc.date.issued2017-08
dc.descriptionIndexación: Web of Science; Scopus.es_CL
dc.description.abstractDeveloping methods with a low environmental impact for nanoparticle synthesis remains one of the greatest challenges in nanotechnology. In this context, biomimetic and biological methods have emerged as green chemistry alternatives, and also contribute to our understanding of how nanomaterials interact with cellular molecules. Here, we report a phosphate-dependent biomimetic method to synthesize of cadmium sulphide (CdS) QDs at low temperatures, physiological pH and aerobic conditions, using CdCl2 and thiols (l-cysteine, glutathione or mercaptosuccinic acid). Inorganic phosphate (Pi) and cellular phosphorylated intermediates such as adenosine monophosphate, glucose-6-phosphate, glycerol-2-phosphate and fructose-1,6-biphosphate, can trigger CdS QDs synthesis. The produced QDs are cubic phase nanocrystals with a tunable fluorescence (450-700 nm), small size (4-12 nm), and are composed of thiols and Pi. In CdS synthesis, the importance of the phosphate is related to its capacity to release H2S from thiols, a phenomenon associated with its base-properties. Based on the biomimetic method, we developed a Pi-based procedure to synthesize CdS QDs in Escherichia coli. As in the biomimetic procedure, Pi favors QDs-biosynthesis not only by mediating biological generation of H2S, but also by improving Cd2+ cellular uptake. A role for phosphates in the cellular interaction and green synthesis of metal QDs is discussed.es_CL
dc.description.urihttp://pubs.rsc.org/en/content/articlepdf/2017/ra/c7ra03578k
dc.identifier.citationRSC Advances Volume 7, Issue 64, 2017, Pages 40270-40278es_CL
dc.identifier.issn2046-2069
dc.identifier.otherDOI: 10.1039/c7ra03578k
dc.identifier.urihttp://repositorio.unab.cl/xmlui/handle/ria/5237
dc.language.isoenes_CL
dc.publisherRoyal Society of Chemistryes_CL
dc.rights.licenseAttribution-NonCommercial 3.0 Unported (CC BY-NC 3.0)
dc.rights.urihttps://creativecommons.org/licenses/by-nc/3.0/
dc.subjectESCHERICHIA-COLIes_CL
dc.subjectHYDROGEN-SULFIDEes_CL
dc.subjectSEMICONDUCTOR NANOCRYSTALSes_CL
dc.subjectAQUEOUS-SOLUTIONes_CL
dc.subjectIN-VITROes_CL
dc.subjectNANOPARTICLESes_CL
dc.subjectCDTEes_CL
dc.subjectBIOSYNTHESISes_CL
dc.subjectBACTERIAes_CL
dc.subjectSULFURes_CL
dc.titleBiological phosphorylated molecules participate in the biomimetic and biological synthesis of cadmium sulphide quantum dots by promoting H2S release from cellular thiolses_CL
dc.typeArtículoes_CL
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