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Alvarez-Venicio V, Castro-Beltrán R, Ramos-Ortiz G, Rodríguez M, Alba-Rosales JE, Gutiérrez-Juárez G, Santillán R, Ochoa ME, Flores-Villavicencio LL, Sabanero-López M. Red fluorescent benzothiadiazole derivative loaded in different nanoformulations: Optical properties and their use in bio-imaging. Spectrochim Acta A Mol Biomol Spectrosc 2023; 290:122250. [PMID: 36566533 DOI: 10.1016/j.saa.2022.122250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 12/09/2022] [Accepted: 12/12/2022] [Indexed: 06/17/2023]
Abstract
Fluorophores with optimized nonlinear optical properties have become prominent as contrast labels in laser scanning microscopy (LSM). The purpose of this work is to report on a novel benzothiadiazole derivative, namely 4,7-bis(5-((9,9-dioctyl-9H-fluoren-2-yl)ethynyl)thiophen-2-yl)benzo[c][1,2,5]thiadiazole (EFBT) and its optical performance when it is loaded into organic nanostructures intended as labels for LSM. Four different nanostructured labels were prepared: i) EFBT-loaded silica nanoparticles (SiNPs); ii) folate-bioconjugated SiNPs (SiNPs-FA); iii) EFBT-loaded PEGylated nanoparticles (NPs-PEG); and iv) EFBT-loaded folate-terminated PEGylated nanoparticles (NPs-PEG-FA). All these nanostructures are reported through a comparative study of their linear and nonlinear optical properties, including their performance as exogenous label agents in the cervical cancer cell line HeLa. This assessment of the performance of a specific fluorophore loaded into different nanostructured matrices (labels), and fairly compared under the same characterization conditions, including the LSM settings, is less common while previous reports had focused in comparing silica and PEGylated nanoparticles but loaded with different fluorophores. The results show that the internal molecular organization into each type of organic nanostructure impacted differently the properties of EFBT, where the silica matrix tend to preserve the optical performance of the fluorophore by preventing intermolecular interactions; in contrast, PEGylated nanoparticles favored molecular interactions and introduced non-radiative decay channels that degrades drastically the optical performance. Nevertheless, the use of functionalized ends entities produced a better cellular label uptake with PEGylated that with silica nanoparticles. In overall, the NPs-PEG-FA label produced the best HeLa imaging.
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Affiliation(s)
- V Alvarez-Venicio
- Centro de Investigaciones en Óptica A.P. 1-948, 37000 León, Gto., Mexico
| | - R Castro-Beltrán
- Departamento de Ingeniería Física, División de Ciencias e Ingenierías, Universidad de Guanajuato, Loma del Bosque 103, Lomas del Campestre, C.P. 37150, León, Guanajuato, México
| | - G Ramos-Ortiz
- Centro de Investigaciones en Óptica A.P. 1-948, 37000 León, Gto., Mexico.
| | - M Rodríguez
- Centro de Investigaciones en Óptica A.P. 1-948, 37000 León, Gto., Mexico.
| | - J E Alba-Rosales
- Centro de Investigaciones en Óptica A.P. 1-948, 37000 León, Gto., Mexico; Departamento de Ingeniería Física, División de Ciencias e Ingenierías, Universidad de Guanajuato, Loma del Bosque 103, Lomas del Campestre, C.P. 37150, León, Guanajuato, México
| | - G Gutiérrez-Juárez
- Departamento de Ingeniería Física, División de Ciencias e Ingenierías, Universidad de Guanajuato, Loma del Bosque 103, Lomas del Campestre, C.P. 37150, León, Guanajuato, México
| | - R Santillán
- Departamento de Química, Centro de Investigación y de Estudios Avanzados del IPN, 07000, Apdo. Postal. 14-740, México D.F., Mexico
| | - M E Ochoa
- Departamento de Química, Centro de Investigación y de Estudios Avanzados del IPN, 07000, Apdo. Postal. 14-740, México D.F., Mexico
| | - L L Flores-Villavicencio
- Departamento de Biología, División de Ciencias Naturales y Exactas, campus Guanajuato, Universidad de Guanajuato, Guanajuato 36050, Mexico
| | - M Sabanero-López
- Departamento de Biología, División de Ciencias Naturales y Exactas, campus Guanajuato, Universidad de Guanajuato, Guanajuato 36050, Mexico
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Pichardo-Molina JL, Cardoso-Avila PE, Patakfalvi RJ, Aparicio-Ixta L, Pedro-García F, Ojeda-Galvan HJ, Flores-Villavicencio LL, Villagómez-Castro JC. One-pot room-temperature direct synthesis of bovine serum albumin-based fluorescent carbon nanoparticles. Int J Biol Macromol 2023; 224:1166-1173. [PMID: 36306911 DOI: 10.1016/j.ijbiomac.2022.10.202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 10/20/2022] [Accepted: 10/22/2022] [Indexed: 11/05/2022]
Affiliation(s)
- J L Pichardo-Molina
- Centro de Investigaciones en Óptica, A. C. Loma del Bosque 115, Colonia Lomas del Campestre, C.P. 37150 León, Guanajuato, Mexico.
| | - P E Cardoso-Avila
- Centro de Investigaciones en Óptica, A. C. Loma del Bosque 115, Colonia Lomas del Campestre, C.P. 37150 León, Guanajuato, Mexico
| | - R J Patakfalvi
- Departamento de Ciencias de la Tierra y de la Vida, Centro Universitarios de los Lagos, Universidad de Guadalajara, Paseo de Los Fresnos 332, Paseos de La Montaña, C.P. 47463 Lagos de Moreno, Jalisco, Mexico
| | - L Aparicio-Ixta
- Centro de Investigaciones en Óptica, A. C. Loma del Bosque 115, Colonia Lomas del Campestre, C.P. 37150 León, Guanajuato, Mexico
| | - F Pedro-García
- Centro de Investigaciones en Óptica, A. C. Loma del Bosque 115, Colonia Lomas del Campestre, C.P. 37150 León, Guanajuato, Mexico
| | - H J Ojeda-Galvan
- Centro de Investigación en Ciencias de la Salud y Biomedicina (CICSaB), Universidad Autónoma de San Luis Potosí, Av. Sierra Leona #550, Col. Lomas 2a. Sección, C.P. 78210 San Luis Potosí, SLP, Mexico
| | - L L Flores-Villavicencio
- Departamento de Biología, División de Ciencias Naturales y Exactas, Universidad de Guanajuato, Noria Alta S/N Col. Noria Alta, C.P. 36050, Guanajuato, Guanajuato, Mexico
| | - J C Villagómez-Castro
- Departamento de Biología, División de Ciencias Naturales y Exactas, Universidad de Guanajuato, Noria Alta S/N Col. Noria Alta, C.P. 36050, Guanajuato, Guanajuato, Mexico
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Pichardo-Molina JL, Cardoso-Avila PE, Flores-Villavicencio LL, Gomez-Ortiz NM, Rodriguez-Rivera MA. Fluorescent carbon nanoparticles synthesized from bovine serum albumin nanoparticles. Int J Biol Macromol 2020; 142:724-731. [PMID: 31622723 DOI: 10.1016/j.ijbiomac.2019.10.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2019] [Revised: 09/20/2019] [Accepted: 10/01/2019] [Indexed: 11/16/2022]
Abstract
Fluorescent carbon based-nanoparticles are one of the emerging nanomaterials. Their preparation is relatively simple, rapid and inexpensive, and they are less toxic compared with metal and semiconductor nanoparticles. Here, we report a simple and reliable method to prepare water-soluble fluorescent carbon nanoparticles (FC-NPs) from nanoparticles made from a protein, bovine serum albumin. The obtained mean size of our carbon nanoparticles is between 3.8 and 3.4 nm, and they exhibit its maximum fluorescence emission at 424 and 408 nm respectively (with a reasonable QY of 16.5%) due to the presence of functional groups (NH, NH2, COOH and OH) that contain O and N; the presence of these functional groups was confirmed by FTIR and XPS analysis. The photoluminescent decay lifetime was modeled by a two exponential fit which indicates a contribution from both core and surface states. Also, the preliminary results showed that FC-NPs had a good interaction with HeLa and normal oral epithelial cells; nanoparticles were permeable at the cell membrane and went to the cytosol, and even to the nucleus, in less than 30 min, the fluorescence images of our preliminary results did not show any apparent toxic damage in any of the cell lines.
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Affiliation(s)
- J L Pichardo-Molina
- Centro de Investigaciones en Óptica, A. C. Loma del Bosque 115, Colonia Lomas del Campestre, C.P. 37150 León, Guanajuato, Mexico.
| | - P E Cardoso-Avila
- Centro Universitario de los Lagos, Universidad de Guadalajara, Av. Enrique Díaz de León No. 1144, Colonia Paseos de la Montaña, C.P. 47460 Lagos de Moreno, Jalisco, Mexico
| | - L L Flores-Villavicencio
- Departamento de Biología, División de Ciencias Naturales y Exactas, Universidad de Guanajuato, Noria Alta S/N Col. Noria Alta, C.P. 36050 Guanajuato, Guanajuato, Mexico
| | - N M Gomez-Ortiz
- Centro de Investigaciones en Óptica, A. C. Loma del Bosque 115, Colonia Lomas del Campestre, C.P. 37150 León, Guanajuato, Mexico
| | - M A Rodriguez-Rivera
- Centro de Investigaciones en Óptica, A. C. Loma del Bosque 115, Colonia Lomas del Campestre, C.P. 37150 León, Guanajuato, Mexico
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