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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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Sossa Melo CL, Wandurraga EA, Peña AM, Jiménez SI, Salazar LA, Ochoa ME, Luna-Gonzalez ML, Ortiz ML, Morales K, Ayala-Castillo M, Reyes DL, Chalela CM. Low bone mineral density and associated factors in patients with haemophilia in Colombia. Haemophilia 2018; 24:e222-e229. [DOI: 10.1111/hae.13516] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/18/2018] [Indexed: 01/15/2023]
Affiliation(s)
- C. L. Sossa Melo
- Division of Hematology and Hematopoietic Stem Cell Transplantation; Department of Internal Medicine; School of Medicine; Universidad Autonoma de Bucaramanga; Bucaramanga Colombia
- Hematology and Hematopoietic Stem Cell Transplantation Unit; Clinica Carlos Ardila Lulle; Bucaramanga Colombia
| | - E. A. Wandurraga
- Department of Endocrinology; School of Medicine; Universidad Autonoma de Bucaramanga; Bucaramanga Colombia
| | - A. M. Peña
- Division of Hematology and Hematopoietic Stem Cell Transplantation; Department of Internal Medicine; School of Medicine; Universidad Autonoma de Bucaramanga; Bucaramanga Colombia
- Hematology and Hematopoietic Stem Cell Transplantation Unit; Clinica Carlos Ardila Lulle; Bucaramanga Colombia
| | - S. I. Jiménez
- Division of Hematology and Hematopoietic Stem Cell Transplantation; Department of Internal Medicine; School of Medicine; Universidad Autonoma de Bucaramanga; Bucaramanga Colombia
- Hematology and Hematopoietic Stem Cell Transplantation Unit; Clinica Carlos Ardila Lulle; Bucaramanga Colombia
| | - L. A. Salazar
- Division of Hematology and Hematopoietic Stem Cell Transplantation; Department of Internal Medicine; School of Medicine; Universidad Autonoma de Bucaramanga; Bucaramanga Colombia
- Hematology and Hematopoietic Stem Cell Transplantation Unit; Clinica Carlos Ardila Lulle; Bucaramanga Colombia
| | - M. E. Ochoa
- Department of Public Health; School of Medicine; Universidad Autonoma de Bucaramanga; Bucaramanga Colombia
| | - M. L. Luna-Gonzalez
- Research Department; Universidad Autonoma de Bucaramanga; Bucaramanga Colombia
| | - M. L. Ortiz
- Hematology and Hematopoietic Stem Cell Transplantation Unit; Clinica Carlos Ardila Lulle; Bucaramanga Colombia
| | - K. Morales
- Division of Hematology; Department of Internal Medicine; School of Medicine; Universidad Nacional Autonoma de Mexico; Ciudad de Mexico Mexico
| | - M. Ayala-Castillo
- Division of Hematology and Hematopoietic Stem Cell Transplantation; Department of Internal Medicine; School of Medicine; Universidad Autonoma de Bucaramanga; Bucaramanga Colombia
| | - D. L. Reyes
- Division of Hematology and Hematopoietic Stem Cell Transplantation; Department of Internal Medicine; School of Medicine; Universidad Autonoma de Bucaramanga; Bucaramanga Colombia
| | - C. M. Chalela
- Division of Hematology and Hematopoietic Stem Cell Transplantation; Department of Internal Medicine; School of Medicine; Universidad Autonoma de Bucaramanga; Bucaramanga Colombia
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Sánchez M, Höpfl H, Ochoa ME, Farfán N, Santillan R, Rojas S. Preparation of seven- and eight-membered boron heterocycles from different salen ligands and arylboronic acids. Inorg Chem 2001; 40:6405-12. [PMID: 11720494 DOI: 10.1021/ic010580g] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Arylboronic acids and different salen ligands have been brought to reaction in a 2:1 stoichiometry in ethanol, toluene, and acetonitrile. In all cases bimetallic boronates with chiral boron atoms could be isolated with the difference that in ethanol mostly open bimetallic boronic esters are obtained, while in toluene or acetonitrile closed bimetallic complexes with a central seven- or eight-membered heterocyclic ring are formed. Both structural types have been characterized by spectroscopic techniques and X-ray crystallography showing that the reactions are diastereoselective in the case of the bimetallic heterocyclic structures. The configurations and conformations of the seven- and eight-membered rings are different, and this may depend on steric effects and/or repulsive intramolecular pi-pi interactions between the two salicylidene moieties attached to the central ring.
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Affiliation(s)
- M Sánchez
- Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, C.P. 62210 Cuernavaca, Morelos, México
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