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Rodal-Cedeira S, Vázquez-Arias A, Bodelón G, Skorikov A, Núñez-Sánchez S, Laporta A, Polavarapu L, Bals S, Liz-Marzán LM, Pérez-Juste J, Pastoriza-Santos I. An Expanded Surface-Enhanced Raman Scattering Tags Library by Combinatorial Encapsulation of Reporter Molecules in Metal Nanoshells. ACS NANO 2020; 14:14655-14664. [PMID: 32869970 PMCID: PMC7690041 DOI: 10.1021/acsnano.0c04368] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Raman-encoded gold nanoparticles (NPs) have been widely employed as photostable multifunctional probes for sensing, bioimaging, multiplex diagnostics, and surface-enhanced Raman scattering (SERS)-guided tumor therapy. We report a strategy toward obtaining a particularly large library of Au nanocapsules encoded with Raman codes defined by the combination of different thiol-free Raman reporters, encapsulated at defined molar ratios. The fabrication of SERS tags with tailored size and predefined codes is based on the in situ incorporation of Raman reporter molecules inside Au nanocapsules during their formation via galvanic replacement coupled to seeded growth on Ag NPs. The hole-free closed-shell structure of the nanocapsules is confirmed by electron tomography. The unusually wide encoding possibilities of the obtained SERS tags are investigated by means of either wavenumber-based encoding or Raman frequency combined with signal intensity, leading to an outstanding performance as exemplified by 26 and 54 different codes, respectively. We additionally demonstrate that encoded nanocapsules can be readily bioconjugated with antibodies for applications such as SERS-based targeted cell imaging and phenotyping.
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Affiliation(s)
- Sergio Rodal-Cedeira
- CINBIO,
Universidade de Vigo, Departamento de Química Física, Campus Universitario As Lagoas, Marcosende, 36310 Vigo, Spain
- Galicia
Sur Health Research Institute (IIS Galicia Sur), SERGAS-UVIGO, 36310 Vigo, Spain
| | - Alba Vázquez-Arias
- CINBIO,
Universidade de Vigo, Departamento de Química Física, Campus Universitario As Lagoas, Marcosende, 36310 Vigo, Spain
- Galicia
Sur Health Research Institute (IIS Galicia Sur), SERGAS-UVIGO, 36310 Vigo, Spain
| | - Gustavo Bodelón
- CINBIO,
Universidade de Vigo, Departamento de Química Física, Campus Universitario As Lagoas, Marcosende, 36310 Vigo, Spain
- Galicia
Sur Health Research Institute (IIS Galicia Sur), SERGAS-UVIGO, 36310 Vigo, Spain
| | - Alexander Skorikov
- EMAT,
University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium
| | - Sara Núñez-Sánchez
- CINBIO,
Universidade de Vigo, Departamento de Química Física, Campus Universitario As Lagoas, Marcosende, 36310 Vigo, Spain
- Galicia
Sur Health Research Institute (IIS Galicia Sur), SERGAS-UVIGO, 36310 Vigo, Spain
| | - Andrea Laporta
- EMAT,
University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium
| | - Lakshminarayana Polavarapu
- CINBIO,
Universidade de Vigo, Departamento de Química Física, Campus Universitario As Lagoas, Marcosende, 36310 Vigo, Spain
| | - Sara Bals
- EMAT,
University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium
| | - Luis M. Liz-Marzán
- CIC
biomaGUNE, Basque Research and Technology Alliance (BRTA), Paseo de Miramón 182, 20014 Donostia-San Sebastian, Spain
- Ikerbasque,
Basque Foundation for Science, 48013 Bilbao, Spain
- Centro
de
Investigación Biomédica en Red, Bioingeniería,
Biomateriales y Nanomedicina, CIBER-BBN, Paseo de Miramón 182, 20014 Donostia-San Sebastián, Spain
| | - Jorge Pérez-Juste
- CINBIO,
Universidade de Vigo, Departamento de Química Física, Campus Universitario As Lagoas, Marcosende, 36310 Vigo, Spain
- Galicia
Sur Health Research Institute (IIS Galicia Sur), SERGAS-UVIGO, 36310 Vigo, Spain
| | - Isabel Pastoriza-Santos
- CINBIO,
Universidade de Vigo, Departamento de Química Física, Campus Universitario As Lagoas, Marcosende, 36310 Vigo, Spain
- Galicia
Sur Health Research Institute (IIS Galicia Sur), SERGAS-UVIGO, 36310 Vigo, Spain
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