1
|
Mavileti SK, Bila G, Utka V, Bila E, Kato T, Bilyy R, Pandey SS. Photophysical Characterization and Biointeractions of NIR Squaraine Dyes for in Vitro and in Vivo Bioimaging. ACS APPLIED BIO MATERIALS 2024; 7:416-428. [PMID: 38112180 DOI: 10.1021/acsabm.3c00997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
The increasing demand for reliable near-infrared (NIR) probes exhibiting enduring fluorescence in living systems and facile compatibility with biomolecules such as peptides, antibodies or proteins is driven by the increasing use of NIR imaging in clinical diagnostics. To address this demand, a series of carboxy-functionalized unsymmetrical squaraine dyes (SQ-27, SQ-212, and SQ-215) along with non-carboxy-functionalized SQ-218 absorbing and emitting in the NIR wavelength range were designed and synthesized followed by photophysical characterization. This study focused on the impact of structural variations in the alkyl chain length, carboxy functionality positioning, and spacer chain length on dye aggregation and interaction with bovine serum albumin (BSA) as a model protein. In phosphate buffer (PB), the absorption intensity of the dyes markedly decreased accompanied by pronounced shoulders indicative of dye aggregation, and complete fluorescence quenching was seen in contrast to organic solvents. However, in the presence of BSA in PB, there was a enhancement in absorption intensity while regaining the fluorescence coupled with a remarkable increase in the intensity with increasing BSA concentrations, signifying the impact of dye-BSA interactions on preventing aggregation. Further analysis of Job's plot unveiled a 2:1 interaction ratio between BSA and all dyes, while the binding studies revealed a robust binding affinity (Ka) in the order of 107/mol. SQ-212 and SQ-215 were further tested for their in vitro and in vivo imaging capabilities. Notably, SQ-212 demonstrated nonpermeability to cells, while SQ-215 exhibited easy penetration and prominent cytoplasmic localization in in vitro studies. Injection of the dyes into laboratory mice showcased their efficacy in visualization, displaying stable and intense fluorescence in tissues without toxicity, organ damage, or behavioral changes. Thus, SQ-212 and SQ-215 are promising candidates for imaging applications, holding potential for noninvasive cellular and diagnostic imaging as well as biomarker detection when coupled with specific vectors in living systems.
Collapse
Affiliation(s)
- Sai Kiran Mavileti
- Graduate School of Life Science and System Engineering, Kyushu Institute of Technology, 2-4, Hibikino, Wakamatsu, 808-0196Kitakyushu ,Japan
| | - Galyna Bila
- Lectinotest R&D, Mechanichna Str 2, 79000 Lviv, Ukraine
- Department of Histology, Cytology & Embryology, Danylo Halytsky Lviv National Medical University, Pekarska Str. 69, 79010 Lviv, Ukraine
| | - Valentyn Utka
- Lectinotest R&D, Mechanichna Str 2, 79000 Lviv, Ukraine
| | - Evgenia Bila
- Lectinotest R&D, Mechanichna Str 2, 79000 Lviv, Ukraine
- Department of Organic Chemistry, Ivan Franko National University of Lviv, Kyrylo and Mefodiy Street 6, 79005 Lviv, Ukraine
| | - Tamaki Kato
- Graduate School of Life Science and System Engineering, Kyushu Institute of Technology, 2-4, Hibikino, Wakamatsu, 808-0196Kitakyushu ,Japan
| | - Rostyslav Bilyy
- Lectinotest R&D, Mechanichna Str 2, 79000 Lviv, Ukraine
- Department of Histology, Cytology & Embryology, Danylo Halytsky Lviv National Medical University, Pekarska Str. 69, 79010 Lviv, Ukraine
| | - Shyam S Pandey
- Graduate School of Life Science and System Engineering, Kyushu Institute of Technology, 2-4, Hibikino, Wakamatsu, 808-0196Kitakyushu ,Japan
| |
Collapse
|
2
|
Ali RF, Guo I, Kang H, Radford MJ, Yapp DT, Gates BD. Tuning the Surface Chemistry of Second-Harmonic-Active Lithium Niobate Nanoprobes Using a Silanol-Alcohol Condensation Reaction. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:7689-7700. [PMID: 34128677 DOI: 10.1021/acs.langmuir.1c00645] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The surface functionalization of nanoparticles (NPs) is of great interest for improving the use of NPs in, for example, therapeutic and diagnostic applications. The conjugation of specific molecules with NPs through the formation of covalent linkages is often sought to provide a high degree of colloidal stability and biocompatibility, as well as to provide functional groups for further surface modification. NPs of lithium niobate (LiNbO3) have been explored for use in second-harmonic-generation (SHG)-based bioimaging, expanding the applications of SHG-based microscopy techniques. The efficient use of SHG-active LiNbO3 NPs as probes will, however, require the functionalization of their surfaces with molecular reagents such as polyethylene glycol and fluorescent molecules to enhance their colloidal and chemical stability and to enable a correlative imaging platform. Herein, we demonstrate the surface functionalization of LiNbO3 NPs through the covalent attachment of alcohol-based reagents through a silanol-alcohol condensation reaction. Alcohol-based reagents are widely available and can have a range of terminal functional groups such as carboxylic acids, amines, and aldehydes. Attaching these molecules to NPs through the silanol-alcohol condensation reaction could diversify the reagents available to modify NPs, but this reaction pathway must first be established as a viable route to modifying NPs. This study focuses on the attachment of a linear alcohol functionalized with carboxylic acid and its use as a reactive group to further tune the surface chemistry of LiNbO3 NPs. These carboxylic acid groups were reacted to covalently attach other molecules to the NPs using copper-free click chemistry. This derivatization of the NPs provided a means to covalently attach polyethylene glycols and fluorescent probes to the NPs, reducing NP aggregation and enabling multimodal tracking of SHG nanoprobes, respectively. This extension of the silanol-alcohol condensation reaction to functionalize the surfaces of LiNbO3 NPs can be extended to other types of nanoprobes for use in bioimaging, biosensing, and photodynamic therapies.
Collapse
Affiliation(s)
- Rana Faryad Ali
- Department of Chemistry and 4D LABS, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia V5A 1S6, Canada
| | - Iris Guo
- Department of Chemistry and 4D LABS, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia V5A 1S6, Canada
| | - Henry Kang
- Department of Chemistry and 4D LABS, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia V5A 1S6, Canada
| | - Melissa J Radford
- Department of Chemistry and 4D LABS, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia V5A 1S6, Canada
| | - Donald T Yapp
- British Columbia Cancer Agency, 675 West 10th Avenue, Vancouver BC V5Z 1L3, Canada
| | - Byron D Gates
- Department of Chemistry and 4D LABS, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia V5A 1S6, Canada
| |
Collapse
|
3
|
Black CE, Zhou E, DeAngelo CM, Asante I, Louie SG, Petasis NA, Humayun MS. Cyanine Nanocages Activated by Near-Infrared Light for the Targeted Treatment of Traumatic Brain Injury. Front Chem 2020; 8:769. [PMID: 33062635 PMCID: PMC7489144 DOI: 10.3389/fchem.2020.00769] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 07/23/2020] [Indexed: 01/03/2023] Open
Abstract
Traumatic brain injury (TBI) is a common and prevalent condition that affects large numbers of people across a range of ages. Individuals engaging in physical activities and victims of accidents are at a higher risk for TBI. There is a lack of available treatment specifically for TBI. Given the difficulty to determine its precise location in the brain, TBI remains difficult to fully diagnose or treat. Herein, we disclose a novel strategy for directing therapeutic agents to TBI sites, without the need to determine the precise location of the TBI activity in the brain. This novel approach is based on the use of a cyanine dye nanocage carrying Gabapentin, a known TBI therapeutic agent. Upon exposure of the cyanine nanocage to near-infrared light, the local release of Gabapentin is triggered, selectively at the TBI-affected site.
Collapse
Affiliation(s)
- Caroline E Black
- Department of Chemistry, University of Southern California, Los Angeles, CA, United States
| | - Eugene Zhou
- School of Pharmacy, University of Southern California, Los Angeles, CA, United States
| | - Caitlin M DeAngelo
- Department of Chemistry, University of Southern California, Los Angeles, CA, United States
| | - Isaac Asante
- School of Pharmacy, University of Southern California, Los Angeles, CA, United States
| | - Stan G Louie
- School of Pharmacy, University of Southern California, Los Angeles, CA, United States.,Ginsburg Institute for Biomedical Therapeutics, University of Southern California, Los Angeles, CA, United States
| | - Nicos A Petasis
- Department of Chemistry, University of Southern California, Los Angeles, CA, United States.,School of Pharmacy, University of Southern California, Los Angeles, CA, United States.,Ginsburg Institute for Biomedical Therapeutics, University of Southern California, Los Angeles, CA, United States
| | - Mark S Humayun
- Ginsburg Institute for Biomedical Therapeutics, University of Southern California, Los Angeles, CA, United States.,Keck School of Medicine, Viterbi School of Engineering, and Roski Eye Institute, University of Southern California, Los Angeles, CA, United States
| |
Collapse
|
4
|
Negwer I, Best A, Schinnerer M, Schäfer O, Capeloa L, Wagner M, Schmidt M, Mailänder V, Helm M, Barz M, Butt HJ, Koynov K. Monitoring drug nanocarriers in human blood by near-infrared fluorescence correlation spectroscopy. Nat Commun 2018; 9:5306. [PMID: 30546066 PMCID: PMC6294246 DOI: 10.1038/s41467-018-07755-0] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Accepted: 11/19/2018] [Indexed: 12/16/2022] Open
Abstract
Nanocarrier-based drug delivery is a promising therapeutic approach that offers unique possibilities for the treatment of various diseases. However, inside the blood stream, nanocarriers' properties may change significantly due to interactions with proteins, aggregation, decomposition or premature loss of cargo. Thus, a method for precise, in situ characterization of drug nanocarriers in blood is needed. Here we show how the fluorescence correlation spectroscopy that is a well-established method for measuring the size, loading efficiency and stability of drug nanocarriers in aqueous solutions can be used to directly characterize drug nanocarriers in flowing blood. As the blood is not transparent for visible light and densely crowded with cells, we label the nanocarriers or their cargo with near-infrared fluorescent dyes and fit the experimental autocorrelation functions with an analytical model accounting for the presence of blood cells. The developed methodology contributes towards quantitative understanding of the in vivo behavior of nanocarrier-based therapeutics.
Collapse
Affiliation(s)
- Inka Negwer
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
- Pharmaceutical Chemistry, Institute of Pharmacy and Biochemistry, Johannes Gutenberg University, Staudinger Weg 5, 55128, Mainz, Germany
| | - Andreas Best
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Meike Schinnerer
- Institute of Physical Chemistry, Johannes Gutenberg University, Jakob Welder Weg 11, 55128, Mainz, Germany
- Institute of Organic Chemistry, Johannes Gutenberg University, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Olga Schäfer
- Institute of Organic Chemistry, Johannes Gutenberg University, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Leon Capeloa
- Institute of Organic Chemistry, Johannes Gutenberg University, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Manfred Wagner
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Manfred Schmidt
- Institute of Physical Chemistry, Johannes Gutenberg University, Jakob Welder Weg 11, 55128, Mainz, Germany
| | - Volker Mailänder
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
- Department of Dermatology, University Medical Center of the Johannes Gutenberg University, Langenbeckstr. 1, 55131, Mainz, Germany
| | - Mark Helm
- Pharmaceutical Chemistry, Institute of Pharmacy and Biochemistry, Johannes Gutenberg University, Staudinger Weg 5, 55128, Mainz, Germany
| | - Matthias Barz
- Institute of Organic Chemistry, Johannes Gutenberg University, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Hans-Jürgen Butt
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany.
- Earth-Life Science Institute, Tokyo Institute of Technology, Meguro, Tokyo, 152-8551, Japan.
| | - Kaloian Koynov
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany.
| |
Collapse
|
5
|
Hu K, Liu C, Li J, Liang F. Copper(ii) complexes based on quinoline-derived Schiff-base ligands: synthesis, characterization, HSA/DNA binding ability, and anticancer activity. MEDCHEMCOMM 2018; 9:1663-1672. [PMID: 30429971 DOI: 10.1039/c8md00223a] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Accepted: 09/01/2018] [Indexed: 12/20/2022]
Abstract
Three copper(ii) complexes, [Cu(L1)(NO3)2] (C1), [Cu(L2)Cl2] (C2) and [Cu(L2)SO4]2·H2O (C3), were designed and synthesized by the reaction of Cu(NO3)2·3H2O, CuCl2·2H2O and CuSO4·5H2O with a quinoline-derived Schiff base ligand, L1 or L2, prepared by the condensation of quinoline-8-carbaldehyde with 4-aminobenzoic acid methyl ester or 4-aminobenzoic acid ethyl ester (benzocaine). The efficient bindings of the C1-C3 complexes with human serum albumin (HSA) and calf thymus DNA (CT-DNA) were analyzed by spectroscopy and molecular docking. These complexes could significantly quench the fluorescence of HSA through the static quenching process, and hydrophobic interactions with HSA through the sub-domain IIA and IIIA cavities. The complexes bind to DNA via the intercalative mode and they fit well into the curved contour of the DNA target in the minor groove region. Furthermore, the interaction abilities of the Cu(ii) complexes with HSA/DNA were greater as compared to their corresponding ligands. Interestingly, C1-C3, particularly C3, exhibited more cytotoxicity toward HeLa cells compared to normal HL-7702 cells and three other tumor cell lines (Hep-G2, NCI-H460, and MGC80-3). Their cytotoxicity toward the HeLa cell lines was 1.9-3.5-fold more potent than cisplatin. Further studies indicated that these complexes arrested the cell cycle in the G0/G1 phase and promoted tumor cell apoptosis via a reactive oxygen species (ROS)-mediated mitochondrial pathway.
Collapse
Affiliation(s)
- Kun Hu
- State Key Laboratory Cultivation Base for Chemistry and Molecular Engineering of Medicinal Resources , School of Chemistry and Pharmacy , Guangxi Normal University , 15 Yucai Road , Guilin 541004 , P. R. China . ;
| | - Chensi Liu
- State Key Laboratory Cultivation Base for Chemistry and Molecular Engineering of Medicinal Resources , School of Chemistry and Pharmacy , Guangxi Normal University , 15 Yucai Road , Guilin 541004 , P. R. China . ;
| | - Jingui Li
- State Key Laboratory Cultivation Base for Chemistry and Molecular Engineering of Medicinal Resources , School of Chemistry and Pharmacy , Guangxi Normal University , 15 Yucai Road , Guilin 541004 , P. R. China . ;
| | - Fupei Liang
- State Key Laboratory Cultivation Base for Chemistry and Molecular Engineering of Medicinal Resources , School of Chemistry and Pharmacy , Guangxi Normal University , 15 Yucai Road , Guilin 541004 , P. R. China . ; .,Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials , College of Chemistry and Bioengineering , Guilin University of Technology , Guilin 541004 , China
| |
Collapse
|
6
|
Choudhury R, Parker HE, Cendejas KM, Mendenhall KL. A red emissive donor-acceptor fluorophore as protein sensor: Synthesis, characterization and binding study. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.06.064] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
7
|
Saikiran M, Sato D, Pandey SS, Kato T. Photophysical investigations of squaraine and cyanine dyes and their interaction with bovine serum albumin. ACTA ACUST UNITED AC 2016. [DOI: 10.1088/1742-6596/704/1/012012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
8
|
Wang L, Han J, Hoy J, Hu F, Liu H, Gentleman MM, Sfeir MY, Misewich JA, Wong SS. Probing differential optical and coverage behavior in nanotube-nanocrystal heterostructures synthesized by covalent versus non-covalent approaches. Dalton Trans 2015; 43:7480-90. [PMID: 24658386 DOI: 10.1039/c3dt53405g] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Double-walled carbon nanotube (DWNT)-CdSe heterostructures with the individual nanoscale building blocks linked together by 4-aminothiophenol (4-ATP) have been successfully synthesized using two different and complementary routes, i.e. covalent attachment and non-covalent π-π stacking. Specifically, using a number of characterization methods, we have probed the effects of these differential synthetic coupling approaches on the resulting CdSe quantum dot (QD) coverage on the underlying nanotube template as well as the degree of charge transfer between the CdSe QDs and the DWNTs. In general, based on microscopy and spectroscopy data collectively, we noted that heterostructures generated by non-covalent π-π stacking interactions evinced not only higher QD coverage density but also possibly more efficient charge transfer behavior as compared with their counterparts produced using covalent linker-mediated protocols.
Collapse
Affiliation(s)
- Lei Wang
- Department of Chemistry, State University of New York at Stony Brook, Stony Brook, NY 11794-3400, USA.
| | | | | | | | | | | | | | | | | |
Collapse
|
9
|
Manley SA, Gailer J. Analysis of the plasma metalloproteome by SEC–ICP-AES: bridging proteomics and metabolomics. Expert Rev Proteomics 2014; 6:251-65. [DOI: 10.1586/epr.09.44] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
10
|
Gui G, Zhuo Y, Chai Y, Liao N, Zhao M, Han J, Xiang Y, Yuan R. A noncovalent Ru(phen)32+@CNTs nanocomposite and its application as a solid-state electrochemiluminescence signal probe. RSC Adv 2014. [DOI: 10.1039/c3ra45641b] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
11
|
Highly sensitive determination of nitric oxide in biologic samples by a near-infrared BODIPY-based fluorescent probe coupled with high-performance liquid chromatography. Talanta 2013; 116:335-42. [DOI: 10.1016/j.talanta.2013.05.043] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2013] [Revised: 05/14/2013] [Accepted: 05/19/2013] [Indexed: 01/09/2023]
|
12
|
Near infrared dye functionalized MWCNT as an effective initiator for the ring opening polymerization of ε-caprolactone. JOURNAL OF POLYMER RESEARCH 2013. [DOI: 10.1007/s10965-013-0118-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
13
|
Cohen S, Pellach M, Kam Y, Grinberg I, Corem-Salkmon E, Rubinstein A, Margel S. Synthesis and characterization of near IR fluorescent albumin nanoparticles for optical detection of colon cancer. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2012; 33:923-31. [PMID: 25427507 DOI: 10.1016/j.msec.2012.11.022] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2012] [Revised: 10/16/2012] [Accepted: 11/13/2012] [Indexed: 11/19/2022]
Abstract
Near IR (NIR) fluorescent human serum albumin (HSA) nanoparticles hold great promise as contrast agents for tumor diagnosis. HSA nanoparticles are considered to be biocompatible, non-toxic and non-immunogenic. In addition, NIR fluorescence properties of these nanoparticles are important for in vivo tumor diagnostics, with low autofluorescence and relatively deep penetration of NIR irradiation due to low absorption of biomatrices. The present study describes the synthesis of new NIR fluorescent HSA nanoparticles, by entrapment of a NIR fluorescent dye within the HSA nanoparticles, which also significantly increases the photostability of the dye. Tumor-targeting ligands such as peanut agglutinin (PNA) and anti-carcinoembryonic antigen antibodies (anti-CEA) were covalently conjugated to the NIR fluorescent albumin nanoparticles, increasing the potential fluorescent signal in tumors with upregulated corresponding receptors. Specific colon tumor detection by the NIR fluorescent HSA nanoparticles was demonstrated in a chicken embryo model and a rat model. In future work we also plan to encapsulate cancer drugs such as doxorubicin within the NIR fluorescent HSA nanoparticles for both colon cancer imaging and therapy.
Collapse
Affiliation(s)
- Sarit Cohen
- Department of Chemistry, Bar-Ilan Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan 52900, Israel
| | - Michal Pellach
- Department of Chemistry, Bar-Ilan Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan 52900, Israel
| | - Yossi Kam
- Institute for Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University of Jerusalem, P.O. Box 12065, Jerusalem 91120, Israel
| | - Igor Grinberg
- Department of Chemistry, Bar-Ilan Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan 52900, Israel
| | - Enav Corem-Salkmon
- Department of Chemistry, Bar-Ilan Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan 52900, Israel
| | - Abraham Rubinstein
- Institute for Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University of Jerusalem, P.O. Box 12065, Jerusalem 91120, Israel
| | - Shlomo Margel
- Department of Chemistry, Bar-Ilan Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan 52900, Israel.
| |
Collapse
|
14
|
Corem-Salkmon E, Perlstein B, Margel S. Design of near-infrared fluorescent bioactive conjugated functional iron oxide nanoparticles for optical detection of colon cancer. Int J Nanomedicine 2012; 7:5517-27. [PMID: 23112575 PMCID: PMC3480238 DOI: 10.2147/ijn.s33710] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Background Colon cancer is one of the major causes of death in the Western world. Early detection significantly improves long-term survival for patients with the disease. Near- infrared (NIR) fluorescent nanoparticles hold great promise as contrast agents for tumor detection. NIR offers several advantages for bioimaging compared with fluorescence in the visible spectrum, ie, lower autofluorescence of biological tissues, lower absorbance, and consequently deeper penetration into biomatrices. Methods and results NIR fluorescent iron oxide nanoparticles with a narrow size distribution were prepared by nucleation, followed by controlled growth of thin iron oxide films onto cyanine NIR dye conjugated gelatin-iron oxide nuclei. For functionalization, and in order to increase the NIR fluorescence intensity, the NIR fluorescent iron oxide nanoparticles obtained were coated with human serum albumin containing cyanine NIR dye. Leakage of the NIR dye from these nanoparticles into phosphate-buffered saline solution containing 4% albumin was not detected. The work presented here is a feasibility study to test the suitability of iron oxide-human serum albumin NIR fluorescent nanoparticles for optical detection of colon cancer. It demonstrates that encapsulation of NIR fluorescent dye within these nanoparticles significantly reduces photobleaching of the dye. Tumor-targeting ligands, peanut agglutinin and anticarcinoembryonic antigen antibodies (αCEA), were covalently conjugated with the NIR fluorescent iron oxide-human serum albumin nanoparticles via a poly(ethylene glycol) spacer. Specific colon tumor detection was demonstrated in chicken embryo and mouse models for both nonconjugated and the peanut agglutinin-conjugated or αCEA-conjugated NIR fluorescent iron oxide-human serum albumin nanoparticles. Conclusion Conjugation of peanut agglutinin or αCEA to the nanoparticles significantly increased the fluorescence intensity of the tagged colon tumor tissues relative to the nonconjugated nanoparticles.
Collapse
Affiliation(s)
- Enav Corem-Salkmon
- The Institute of Nanotechnology and Advanced Materials, Department of Chemistry, Bar-Ilan University, Ramat-Gan, Israel
| | | | | |
Collapse
|
15
|
Cohen S, Margel S. Engineering of near IR fluorescent albumin nanoparticles for in vivo detection of colon cancer. J Nanobiotechnology 2012; 10:36. [PMID: 22891637 PMCID: PMC3477047 DOI: 10.1186/1477-3155-10-36] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2012] [Accepted: 07/23/2012] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND The use of near-infrared (NIR) fluorescence imaging techniques has gained great interest for early detection of cancer because water and other intrinsic biomolecules display negligible absorption or autofluorescence in this region. Novel fluorescent nanoparticles with potential to improve neoplasm detection sensitivity may prove to be a valuable tool in early detection of colon tumors. METHODS The present study describes the synthesis and use of NIR fluorescent albumin nanoparticles as a diagnostic tool for detection of colon cancer. These fluorescent nanoparticles were prepared by a precipitation process of human serum albumin (HSA) in aqueous solution in the presence of a carboxylic acid derivative of the NIR dye IR-783 (CANIR). Tumor-targeting ligands such as peanut agglutinin (PNA), anti-carcinoembryonic antigen antibodies (anti-CEA) and tumor associated glycoprotein-72 monoclonal antibodies (anti-TAG-72) were covalently conjugated to the albumin nanoparticles via the surface carboxylate groups by using the carbodiimide activation method. RESULTS AND DISCUSSION Leakage of the encapsulated dye into PBS containing 4% HSA or human bowel juice was not detected. This study also demonstrates that the encapsulation of the NIR fluorescent dye within the HSA nanoparticles reduces the photobleaching of the dye significantly. Specific colon tumor detection in a mouse model was demonstrated for PNA, anti-CEA and anti-TAG-72 conjugated NIR fluorescent HSA nanoparticles. These bioactive NIR fluorescent albumin nanoparticles also detected invisible tumors that were revealed as pathological only subsequent to histological analysis. CONCLUSIONS These results may suggest a significant advantage of NIR fluorescence imaging using NIR fluorescent nanoparticles over regular colonoscopy. In future work we plan to broaden this study by encapsulating cancer drugs, such as paclitaxel and doxorubicin, within these biodegradable NIR fluorescent HSA nanoparticles, in order to use them for both detection as well as therapy of colon cancer and others.
Collapse
Affiliation(s)
- Sarit Cohen
- The Institute of Nanotechnology and Advanced Materials, Department of Chemistry, Bar-Ilan University, Ramat-Gan 52900, Israel.
| | | |
Collapse
|
16
|
Wang C, Ouyang J, Ye DK, Xu JJ, Chen HY, Xia XH. Rapid protein concentration, efficient fluorescence labeling and purification on a micro/nanofluidics chip. LAB ON A CHIP 2012; 12:2664-71. [PMID: 22648530 DOI: 10.1039/c2lc20977b] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Fluorescence analysis has proved to be a powerful detection technique for achieving single molecule analysis. However, it usually requires the labeling of targets with bright fluorescent tags since most chemicals and biomolecules lack fluorescence. Conventional fluorescence labeling methods require a considerable quantity of biomolecule samples, long reaction times and extensive chromatographic purification procedures. Herein, a micro/nanofluidics device integrating a nanochannel in a microfluidics chip has been designed and fabricated, which achieves rapid protein concentration, fluorescence labeling, and efficient purification of product in a miniaturized and continuous manner. As a demonstration, labeling of the proteins bovine serum albumin (BSA) and IgG with fluorescein isothiocyanate (FITC) is presented. Compared to conventional methods, the present micro/nanofluidics device performs about 10(4)-10(6) times faster BSA labeling with 1.6 times higher yields due to the efficient nanoconfinement effect, improved mass, and heat transfer in the chip device. The results demonstrate that the present micro/nanofluidics device promises rapid and facile fluorescence labeling of small amount of reagents such as proteins, nucleic acids and other biomolecules with high efficiency.
Collapse
Affiliation(s)
- Chen Wang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | | | | | | | | | | |
Collapse
|
17
|
Beckford G, Owens E, Henary M, Patonay G. The solvatochromic effects of side chain substitution on the binding interaction of novel tricarbocyanine dyes with human serum albumin. Talanta 2012; 92:45-52. [DOI: 10.1016/j.talanta.2012.01.029] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2012] [Accepted: 01/13/2012] [Indexed: 11/26/2022]
|
18
|
Polymethine dyes as spectral-fluorescent probes for biomacromolecules. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS 2012. [DOI: 10.1016/j.jphotochemrev.2011.11.001] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
|
19
|
Choi HS, Nasr K, Alyabyev S, Feith D, Lee JH, Kim SH, Ashitate Y, Hyun H, Patonay G, Strekowski L, Henary M, Frangioni JV. Synthesis and in vivo fate of zwitterionic near-infrared fluorophores. Angew Chem Int Ed Engl 2011; 50:6258-63. [PMID: 21656624 PMCID: PMC3128676 DOI: 10.1002/anie.201102459] [Citation(s) in RCA: 252] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2011] [Indexed: 11/11/2022]
Affiliation(s)
- Hak Soo Choi
- H.S. Choi, Ph.D., K. Nasr, Ph.D., D. Feith, M.S., J.H. Lee, B.S., S.H. Kim, Ph.D., Y. Ashitate, M.D., H. Hyun, Ph.D., J.V. Frangioni, M.D., Ph.D. Division of Hematology/Oncology, Department of Medicine and Department of Radiology, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, SLB-05, Boston, MA, 02215, USA. S. Alyabyev, Ph.D., G. Patonay, Ph.D., L. Strekowski, Ph.D., M. Henary, Ph.D., Department of Chemistry, Georgia State University, Atlanta, GA 30303, USA. S.H. Kim, Ph.D., WCU Department of BIN Fusion Technology, Chonbuk National University, Jeonju 561-756, South Korea
| | - Khaled Nasr
- H.S. Choi, Ph.D., K. Nasr, Ph.D., D. Feith, M.S., J.H. Lee, B.S., S.H. Kim, Ph.D., Y. Ashitate, M.D., H. Hyun, Ph.D., J.V. Frangioni, M.D., Ph.D. Division of Hematology/Oncology, Department of Medicine and Department of Radiology, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, SLB-05, Boston, MA, 02215, USA. S. Alyabyev, Ph.D., G. Patonay, Ph.D., L. Strekowski, Ph.D., M. Henary, Ph.D., Department of Chemistry, Georgia State University, Atlanta, GA 30303, USA. S.H. Kim, Ph.D., WCU Department of BIN Fusion Technology, Chonbuk National University, Jeonju 561-756, South Korea
| | - Sergey Alyabyev
- H.S. Choi, Ph.D., K. Nasr, Ph.D., D. Feith, M.S., J.H. Lee, B.S., S.H. Kim, Ph.D., Y. Ashitate, M.D., H. Hyun, Ph.D., J.V. Frangioni, M.D., Ph.D. Division of Hematology/Oncology, Department of Medicine and Department of Radiology, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, SLB-05, Boston, MA, 02215, USA. S. Alyabyev, Ph.D., G. Patonay, Ph.D., L. Strekowski, Ph.D., M. Henary, Ph.D., Department of Chemistry, Georgia State University, Atlanta, GA 30303, USA. S.H. Kim, Ph.D., WCU Department of BIN Fusion Technology, Chonbuk National University, Jeonju 561-756, South Korea
| | - Dina Feith
- H.S. Choi, Ph.D., K. Nasr, Ph.D., D. Feith, M.S., J.H. Lee, B.S., S.H. Kim, Ph.D., Y. Ashitate, M.D., H. Hyun, Ph.D., J.V. Frangioni, M.D., Ph.D. Division of Hematology/Oncology, Department of Medicine and Department of Radiology, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, SLB-05, Boston, MA, 02215, USA. S. Alyabyev, Ph.D., G. Patonay, Ph.D., L. Strekowski, Ph.D., M. Henary, Ph.D., Department of Chemistry, Georgia State University, Atlanta, GA 30303, USA. S.H. Kim, Ph.D., WCU Department of BIN Fusion Technology, Chonbuk National University, Jeonju 561-756, South Korea
| | - Jeong Heon Lee
- H.S. Choi, Ph.D., K. Nasr, Ph.D., D. Feith, M.S., J.H. Lee, B.S., S.H. Kim, Ph.D., Y. Ashitate, M.D., H. Hyun, Ph.D., J.V. Frangioni, M.D., Ph.D. Division of Hematology/Oncology, Department of Medicine and Department of Radiology, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, SLB-05, Boston, MA, 02215, USA. S. Alyabyev, Ph.D., G. Patonay, Ph.D., L. Strekowski, Ph.D., M. Henary, Ph.D., Department of Chemistry, Georgia State University, Atlanta, GA 30303, USA. S.H. Kim, Ph.D., WCU Department of BIN Fusion Technology, Chonbuk National University, Jeonju 561-756, South Korea
| | - Soon Hee Kim
- H.S. Choi, Ph.D., K. Nasr, Ph.D., D. Feith, M.S., J.H. Lee, B.S., S.H. Kim, Ph.D., Y. Ashitate, M.D., H. Hyun, Ph.D., J.V. Frangioni, M.D., Ph.D. Division of Hematology/Oncology, Department of Medicine and Department of Radiology, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, SLB-05, Boston, MA, 02215, USA. S. Alyabyev, Ph.D., G. Patonay, Ph.D., L. Strekowski, Ph.D., M. Henary, Ph.D., Department of Chemistry, Georgia State University, Atlanta, GA 30303, USA. S.H. Kim, Ph.D., WCU Department of BIN Fusion Technology, Chonbuk National University, Jeonju 561-756, South Korea
| | - Yoshitomo Ashitate
- H.S. Choi, Ph.D., K. Nasr, Ph.D., D. Feith, M.S., J.H. Lee, B.S., S.H. Kim, Ph.D., Y. Ashitate, M.D., H. Hyun, Ph.D., J.V. Frangioni, M.D., Ph.D. Division of Hematology/Oncology, Department of Medicine and Department of Radiology, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, SLB-05, Boston, MA, 02215, USA. S. Alyabyev, Ph.D., G. Patonay, Ph.D., L. Strekowski, Ph.D., M. Henary, Ph.D., Department of Chemistry, Georgia State University, Atlanta, GA 30303, USA. S.H. Kim, Ph.D., WCU Department of BIN Fusion Technology, Chonbuk National University, Jeonju 561-756, South Korea
| | - Hoon Hyun
- H.S. Choi, Ph.D., K. Nasr, Ph.D., D. Feith, M.S., J.H. Lee, B.S., S.H. Kim, Ph.D., Y. Ashitate, M.D., H. Hyun, Ph.D., J.V. Frangioni, M.D., Ph.D. Division of Hematology/Oncology, Department of Medicine and Department of Radiology, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, SLB-05, Boston, MA, 02215, USA. S. Alyabyev, Ph.D., G. Patonay, Ph.D., L. Strekowski, Ph.D., M. Henary, Ph.D., Department of Chemistry, Georgia State University, Atlanta, GA 30303, USA. S.H. Kim, Ph.D., WCU Department of BIN Fusion Technology, Chonbuk National University, Jeonju 561-756, South Korea
| | - Gabor Patonay
- H.S. Choi, Ph.D., K. Nasr, Ph.D., D. Feith, M.S., J.H. Lee, B.S., S.H. Kim, Ph.D., Y. Ashitate, M.D., H. Hyun, Ph.D., J.V. Frangioni, M.D., Ph.D. Division of Hematology/Oncology, Department of Medicine and Department of Radiology, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, SLB-05, Boston, MA, 02215, USA. S. Alyabyev, Ph.D., G. Patonay, Ph.D., L. Strekowski, Ph.D., M. Henary, Ph.D., Department of Chemistry, Georgia State University, Atlanta, GA 30303, USA. S.H. Kim, Ph.D., WCU Department of BIN Fusion Technology, Chonbuk National University, Jeonju 561-756, South Korea
| | - Lucjan Strekowski
- H.S. Choi, Ph.D., K. Nasr, Ph.D., D. Feith, M.S., J.H. Lee, B.S., S.H. Kim, Ph.D., Y. Ashitate, M.D., H. Hyun, Ph.D., J.V. Frangioni, M.D., Ph.D. Division of Hematology/Oncology, Department of Medicine and Department of Radiology, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, SLB-05, Boston, MA, 02215, USA. S. Alyabyev, Ph.D., G. Patonay, Ph.D., L. Strekowski, Ph.D., M. Henary, Ph.D., Department of Chemistry, Georgia State University, Atlanta, GA 30303, USA. S.H. Kim, Ph.D., WCU Department of BIN Fusion Technology, Chonbuk National University, Jeonju 561-756, South Korea
| | - Maged Henary
- H.S. Choi, Ph.D., K. Nasr, Ph.D., D. Feith, M.S., J.H. Lee, B.S., S.H. Kim, Ph.D., Y. Ashitate, M.D., H. Hyun, Ph.D., J.V. Frangioni, M.D., Ph.D. Division of Hematology/Oncology, Department of Medicine and Department of Radiology, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, SLB-05, Boston, MA, 02215, USA. S. Alyabyev, Ph.D., G. Patonay, Ph.D., L. Strekowski, Ph.D., M. Henary, Ph.D., Department of Chemistry, Georgia State University, Atlanta, GA 30303, USA. S.H. Kim, Ph.D., WCU Department of BIN Fusion Technology, Chonbuk National University, Jeonju 561-756, South Korea
| | - John V. Frangioni
- H.S. Choi, Ph.D., K. Nasr, Ph.D., D. Feith, M.S., J.H. Lee, B.S., S.H. Kim, Ph.D., Y. Ashitate, M.D., H. Hyun, Ph.D., J.V. Frangioni, M.D., Ph.D. Division of Hematology/Oncology, Department of Medicine and Department of Radiology, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, SLB-05, Boston, MA, 02215, USA. S. Alyabyev, Ph.D., G. Patonay, Ph.D., L. Strekowski, Ph.D., M. Henary, Ph.D., Department of Chemistry, Georgia State University, Atlanta, GA 30303, USA. S.H. Kim, Ph.D., WCU Department of BIN Fusion Technology, Chonbuk National University, Jeonju 561-756, South Korea
| |
Collapse
|
20
|
Choi HS, Nasr K, Alyabyev S, Feith D, Lee JH, Kim SH, Ashitate Y, Hyun H, Patonay G, Strekowski L, Henary M, Frangioni JV. Synthesis and In Vivo Fate of Zwitterionic Near-Infrared Fluorophores. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201102459] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
21
|
Chapman G, Henary M, Patonay G. The effect of varying short-chain alkyl substitution on the molar absorptivity and quantum yield of cyanine dyes. ANALYTICAL CHEMISTRY INSIGHTS 2011; 6:29-36. [PMID: 21760707 PMCID: PMC3074209 DOI: 10.4137/aci.s6568] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
The effect of varying short-chain alkyl substitution of the indole nitrogens on the spectroscopic properties of cyanine dyes was examined. Molar absorptivities and fluorescence quantum yields were determined for a set of pentamethine dyes and a set of heptamethine dyes for which the substitution of the indole nitrogen was varied. For both sets of dyes, increasing alkyl chain length resulted in no significant change in quantum yield or molar absorptivity. These results may be useful in designing new cyanine dyes for analytical applications and predicting their spectroscopic properties.
Collapse
Affiliation(s)
- Gala Chapman
- Department of Chemistry, Georgia State University, P.O. Box 4098, Atlanta, Georgia 30302-4098, USA
| | | | | |
Collapse
|
22
|
Z/E(C=C)-isomerization and fluorescence modulation of imines of 7-N,N-dialkylamino-4-hydroxy-3-formylcoumarins in organic solvents. HETEROCYCL COMMUN 2011. [DOI: 10.1515/hc.2011.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
23
|
Traven VF, Ivanov IV, Lebedev VS, Chibisova TA, Milevskii BG, Solov’eva NP, Polshakov VI, Alexandrov GG, Kazheva ON, Dyachenko OA. E/Z(C=C)-Isomerization of enamines of 3-formyl-4-hydroxycoumarin induced by organic solvents. Russ Chem Bull 2011. [DOI: 10.1007/s11172-010-0284-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
24
|
Barros TC, Toma SH, Toma HE, Bastos EL, Baptista MS. Polymethine cyanine dyes in β-cyclodextrin solution: multiple equilibria and chemical oxidation. J PHYS ORG CHEM 2010. [DOI: 10.1002/poc.1692] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
|
25
|
Traven VF, Ivanov IV, Lebedev VS, Solov’eva NP, Polshakov VI, Kazheva ON, Alexandrov GG, Dyachenko OA. Z/E (C=C)-isomerization and fluorescence modulation of imines of 7-N,N-dialkylamino-4-hydroxy-3-formylcoumarins in organic solvents. HETEROCYCL COMMUN 2010. [DOI: 10.1515/hc.2010.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
26
|
Z/E(C=C)-isomerization of coumarin enamines induced by organic solvents. MENDELEEV COMMUNICATIONS 2009. [DOI: 10.1016/j.mencom.2009.07.014] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
27
|
Lim YT, Noh YW, Han JH, Cai QY, Yoon KH, Chung BH. Biocompatible polymer-nanoparticle-based bimodal imaging contrast agents for the labeling and tracking of dendritic cells. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2008; 4:1640-1645. [PMID: 18819168 DOI: 10.1002/smll.200800582] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Affiliation(s)
- Yong Taik Lim
- BioNanotechnology Research Center Korea Research Institute of Bioscience and Biotechnology P.O. Box 115, Yuseong-gu, Daejeon 305-333, Korea
| | | | | | | | | | | |
Collapse
|
28
|
ITO S, MUGURUMA N, HAYASHI S, TAOKA S, TSUTSUI A, FUKUDA T, OKAHISA T, OHKITA Y, MATSUNAGA H, SHIMIZU I, NAKAMURA K, IMAIZUMI K, TAKESAKO K, SHIBAMURA S. Development of an Imaging System Using Fluorescent Labeling Substances Excited by Infrared Rays. Dig Endosc 2007. [DOI: 10.1111/j.1443-1661.1997.tb00501.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Affiliation(s)
- Susumu ITO
- Second Department of Internal Medicine, School of Medicine, The University of Tokushima, Tokushima, Japan
| | - Naoki MUGURUMA
- Second Department of Internal Medicine, School of Medicine, The University of Tokushima, Tokushima, Japan
| | | | - Satoko TAOKA
- Second Department of Internal Medicine, School of Medicine, The University of Tokushima, Tokushima, Japan
| | - Akemi TSUTSUI
- Second Department of Internal Medicine, School of Medicine, The University of Tokushima, Tokushima, Japan
| | - Tamotsu FUKUDA
- Second Department of Internal Medicine, School of Medicine, The University of Tokushima, Tokushima, Japan
| | - Toshiya OKAHISA
- Second Department of Internal Medicine, School of Medicine, The University of Tokushima, Tokushima, Japan
| | - Yoshio OHKITA
- Second Department of Internal Medicine, School of Medicine, The University of Tokushima, Tokushima, Japan
| | - Hiroko MATSUNAGA
- Second Department of Internal Medicine, School of Medicine, The University of Tokushima, Tokushima, Japan
| | - Ichiro SHIMIZU
- Second Department of Internal Medicine, School of Medicine, The University of Tokushima, Tokushima, Japan
| | - Kazunari NAKAMURA
- Second Department of Internal Medicine, School of Medicine, The University of Tokushima, Tokushima, Japan
| | | | | | | |
Collapse
|
29
|
Slavnova TD, Görner H, Chibisov AK. J-Aggregation of Anionic Ethyl meso-Thiacarbocyanine Dyes Induced by Binding to Proteins. J Phys Chem B 2007; 111:10023-31. [PMID: 17672494 DOI: 10.1021/jp072503y] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The effects of ribonuclease A (RNase), lysozyme, trypsin, and bovine serum albumin (BSA) on the J-aggregation behavior of 3,3'-bis[sulfopropyl]-5-methoxy-4',5'-benzo-9-ethylthiacarbocyanine (1), 3,3'-bis[sulfopropyl]-4,5,4',5'-dibenzo-9-ethylthiacarbocyanine (2), and 3,3'-bis[sulfopropyl]-5,5'-dimethoxy-9-ethylthiacarbocyanine (3) were studied in aqueous solution. The formation of J-aggregates at pH 6 is induced by RNase for 1-3, by lysozyme for 1 and 2, and by trypsin for 2. The formation of J-aggregates correlates with decay of the dimers and is supported by induced circular dichroism spectra. The concentration of J-aggregates for lysozyme/1 increases with an increase in the protein/dye concentration ratio, reaches a plateau, and then gradually decreases. J-aggregates are characterized by relatively weak fluorescence; e.g., Phi(f) = 0.01 for lysozyme/1, and by a small Stokes shift of 6-8 nm, indicating almost resonance fluorescence. J-aggregation proceeds in the range of seconds to minutes with sigmoidal type kinetic curves for trypsin/2 and nonsigmoidal kinetics in the other cases. The presence of BSA, in contrast to RNase, lysozyme, and trypsin, results in deaggregation of dimers of 1-3 and formation of bound monomers and exhibits intense fluorescence from the trans-monomer; e.g., Phi(f) = 0.22 for BSA/1. Generally, the binding of 1-3 to the proteins is a cooperative process, where the number of binding sites changes from n = 15 for lysozyme/1 to n = 6 for trypsin/2 and n = 0.3 and 1 for BSA/3.
Collapse
Affiliation(s)
- Tatyana D Slavnova
- Center of Photochemistry, Russian Academy of Sciences, 119421 Moscow, Russia
| | | | | |
Collapse
|
30
|
Zhang Y, Du H, Tang Y, Xu G, Yan W. Spectroscopic investigation on the interaction of J-aggregate with human serum albumin. Biophys Chem 2007; 128:197-203. [PMID: 17482339 DOI: 10.1016/j.bpc.2007.04.002] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2007] [Revised: 04/12/2007] [Accepted: 04/14/2007] [Indexed: 11/27/2022]
Abstract
The interactions of three cyanine dyes, which exhibit different meso substituent in polymethine chain, with human serum albumin (HSA) have been investigated by the means of absorption, fluorescence and circular dichroism (CD) spectra. In phosphate buffer solution (PBS), the mentioned dyes exist not as isolated monomers but rather in the formation of J-aggregation. In the presence of HSA, the absorption and fluorescence emission spectra indicated that the J-aggregation was decomposed to monomer because of the strong affinity between dye molecules and HSA. Besides the association of cyanine dyes with HSA, binding to HSA gave rise to the J-aggregation CD signals. The meso substituent in the polymethine plays an important role in the interaction of HSA and the J-aggregation. Spectral studies showed that the dye bound with HSA in a 1:1 formation. The apparent constant (K(a)) value was roughly identified by analysis of the corresponding fluorescence data at various HSA concentrations. The higher affinity of the molecule with meso phenyl towards HSA with respect to molecules with meso ethyl or methyl can be attributed to the arrangement of molecules in J-aggregation and the hydrophobic force between the molecules and HSA.
Collapse
Affiliation(s)
- Yazhou Zhang
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China
| | | | | | | | | |
Collapse
|
31
|
Dynamic exchange of heterocyclic subunits during halogen substitution in chloroheptamethinecyanine dyes by benzoazolium salts. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.05.068] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
32
|
Strekowski L, Lee H, Mason JC, Say M, Patonay G. Stability in solution of indolium heptamethine cyanines and related pH-sensitive systems. J Heterocycl Chem 2007. [DOI: 10.1002/jhet.5570440233] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
33
|
Ohnishi S, Lomnes SJ, Laurence RG, Gogbashian A, Mariani G, Frangioni JV. Organic Alternatives to Quantum Dots for Intraoperative Near-Infrared Fluorescent Sentinel Lymph Node Mapping. Mol Imaging 2005; 4:172-81. [PMID: 16194449 DOI: 10.1162/15353500200505127] [Citation(s) in RCA: 136] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2005] [Revised: 04/18/2005] [Accepted: 04/22/2005] [Indexed: 11/04/2022] Open
Abstract
Intraoperative near-infrared (NIR) fluorescence imaging provides the surgeon with real-time image guidance during cancer and other surgeries. We have previously reported the use of NIR fluorescent quantum dots (QDs) for sentinel lymph node (SLN) mapping. However, because of concerns over potential toxicity, organic alternatives to QDs will be required for initial clinical studies. We describe a family of 800 nm organic heptamethine indocyanine-based contrast agents for SLN mapping spanning a spectrum from 775 Da small molecules to 7 MDa nanocolloids. We provide a detailed characterization of the optical and physical properties of these contrast agents and discuss the advantages and disadvantages of each. We present robust methods for the covalent conjugation, purification, and characterization of proteins with tetra-sulfonated heptamethine indocyanines, including mass spectroscopic site mapping of highly substituted molecules. One contrast agent, NIR fluorescent human serum albumin (HSA800), emerged as the molecule with the best overall performance with respect to entry to lymphatics, flow to the SLN, retention in the SLN, fluorescence yield and reproducibility. This preclinical study, performed on large animals approaching the size of humans, should serve as a foundation for future clinical studies.
Collapse
|
34
|
Wang H, Li WR, Lu Y, Fu NN, Zhang HS. Spectrophotometric determination of DNA using a near infrared probe 1,1'-disulfobutyl-3,3,3',3'-tetramethylindotricarbocyanine. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2005; 61:2103-7. [PMID: 15911398 DOI: 10.1016/j.saa.2004.07.039] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2004] [Accepted: 07/27/2004] [Indexed: 05/02/2023]
Abstract
A direct spectrophotometric determination of DNA in solution has been developed using a near infrared probe, 1,1'-disulfobutyl-3,3,3',3'-tetramethylindotricarbocyanine (DSTCY). In pH = 7.5 Tris-HCl buffer, the reaction of DSTCY with DNA was complete within 10 min at room temperature in the presence of cetyltrimethylammonium bromide (CTAB), which leaded to a sharp increase of the absorbance at 474 nm. The concentration of DNA can be determined in such wavelength with the linear range of 0.5-8.0 microg ml(-1) and the detection limit of 45 ng ml(-1).
Collapse
Affiliation(s)
- Hong Wang
- Department of Chemistry, Wuhan University, Wuhan 430072, China
| | | | | | | | | |
Collapse
|
35
|
Patonay G, Salon J, Sowell J, Strekowski L. Noncovalent labeling of biomolecules with red and near- infrared dyes. Molecules 2004; 9:40-9. [PMID: 18007410 DOI: 10.3390/90300040] [Citation(s) in RCA: 101] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2004] [Accepted: 02/27/2004] [Indexed: 11/16/2022] Open
Abstract
Biopolymers such as proteins and nucleic acids can be labeled with a fluorescent marker to allow for their detection. Covalent labeling is achieved by the reaction of an appropriately functionalized dye marker with a reactive group on a biomolecule. The recent trend, however, is the use of noncovalent labeling that results from strong hydrophobic and/or ionic interactions between the marker and biomolecule of interest. The main advantage of noncovalent labeling is that it affects the functional activity of the biomolecule to a lesser extent. The applications of luminescent cyanine and squarylium dyes are reviewed.
Collapse
Affiliation(s)
- Gabor Patonay
- Department of Chemistry, Georgia State University, University Plaza, Atlanta, Georgia 30303, USA.
| | | | | | | |
Collapse
|
36
|
Tatikolov AS, Costa SMB. Complexation of polymethine dyes with human serum albumin: a spectroscopic study. Biophys Chem 2004; 107:33-49. [PMID: 14871599 DOI: 10.1016/s0301-4622(03)00218-7] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2003] [Revised: 08/04/2003] [Accepted: 08/04/2003] [Indexed: 11/15/2022]
Abstract
Non-covalent interactions between polymethine dyes of various types (cationic and anionic thiacarbocyanines as well as anionic oxonols and tetracyanopolymethines) and human serum albumin (HSA) were studied by means of absorption, fluorescence and circular dichroism (CD) spectroscopies. Complexation with the protein leads to a red shift of the dye absorption spectra and, in most cases, to a growth of the fluorescence quantum yield (Phif; for oxonols this growth is very small). The binding constants (K) obtained from changing the absorption spectra and Phif vary from 10(4) to (5-6) x 10(7) M(-1). K for the anionic dyes is much higher than for the cationic dyes (the highest K was found for oxonols). Interaction of meso-substituted anionic thiacarbocyanines with HSA results in cis-->trans isomerization and, as a consequence, an appearance and a steep rise of dye fluorescence. Binding to HSA gives rise to dye CD signals and in many cases is accompanied by aggregation of the dyes. These aggregates often exhibit biphasic CD spectra. The aggregates formed by the dyes alone are decomposed in the presence of HSA.
Collapse
Affiliation(s)
- Alexander S Tatikolov
- Centro de Química Estrutural, Complexo 1, Instituto Superior Técnico, Av. Rovisco Pais, Lisboa 1049-001, Portugal.
| | | |
Collapse
|
37
|
Wetzl B, Gruber M, Oswald B, Dürkop A, Weidgans B, Probst M, Wolfbeis OS. Set of fluorochromophores in the wavelength range from 450 to 700 nm and suitable for labeling proteins and amino-modified DNA. J Chromatogr B Analyt Technol Biomed Life Sci 2003; 793:83-92. [PMID: 12880856 DOI: 10.1016/s1570-0232(03)00366-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We describe the synthesis, purification, and spectral properties of new dyes and reactive labels. They absorb in the visible range between 450 and 700 nm and display analytically useful fluorescence. They were made amino-reactive by esterification with N-hydroxysuccinimide (NHS). The resulting oxysuccinimide (OSI) esters were covalently linked to the amino groups of human serum albumin (HSA) or certain DNA oligomers. Except for dyes 9 and 13, they contain one reactive group only in order to avoid cross linking of biomolecules. Labeling of amino-modified biomolecules was performed by standard protocols, and the labeled proteins and oligonucleotides were separated from the unreacted dye by gel chromatography using Sephadex G25 as the stationary phase in the case of proteins, and reversed-phase HPLC in the case of DNA oligomers. The dyes also have been used as donor-acceptor pairs in fluorescence energy transfer systems and in energy transfer cascades.
Collapse
Affiliation(s)
- Bianca Wetzl
- Institute of Analytical Chemistry, Chemo- and Biosensors, University of Regensburg, D-93040, Regensburg, Germany
| | | | | | | | | | | | | |
Collapse
|
38
|
Tadatsu M, Ito S, Muguruma N, Kusaka Y, Inayama K, Bando T, Tadatsu Y, Okamoto K, Ii K, Nagao Y, Sano S, Taue H. A new infrared fluorescent-labeling agent and labeled antibody for diagnosing microcancers. Bioorg Med Chem 2003; 11:3289-94. [PMID: 12837539 DOI: 10.1016/s0968-0896(03)00239-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
PURPOSE We have developed infrared fluorescent labeling agents and infrared-ray fluorescence endoscopes to establish a novel diagnostic technique. Since the fluorescence intensity of the initial labeled antibody (ICG-sulfo-OSu-labeled antibody) was not sufficient for practical use, we synthesized indocyanine green acylthiazolidinethione (ICG-ATT), which was expected to label various target molecules having amino groups efficiently. MATERIALS AND METHODS To confirm imaging of infrared fluorescence intensity of ICG-ATT- and ICG-sulfo-OSu-labeled anti-MUC1 antibodies, cotton thread was soaked in various concentrations of the antibody solution in 0.1M PBS, and observed under the epi-illumination infrared fluorescence microscope. Localization and the intensity of infrared fluorescence and DAB coloring was compared in paraffin sections of human gastric mucosa. RESULTS In the study of cotton threads, both labeled antibodies showed relatively clear infrared fluorescence, and significant difference was not observed between the two antibodies. ICG-ATT-labeled anti-MUC1 antibody produced stronger staining than that by ICG-sulfo-OSu-labeled antibody. Localization pattern of infrared fluorescent staining was in good agreement with that by the conventional method with oxidized DAB staining. CONCLUSION ICG-ATT is useful as a fluorescent-labeling agent for diagnosis of microcancers by infrared fluorescence endoscopes.
Collapse
Affiliation(s)
- Masaya Tadatsu
- Department of Digestive and Cardiovascular Medicine, The University of Tokushima School of Medicine, 3-18-15 Kuramoto-cho, Tokushima City 770-8503, Japan
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
39
|
Derivatization Reactions for Analytes with Various Functional Groups. ACTA ACUST UNITED AC 2002. [DOI: 10.1016/s0301-4770(02)80020-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
|
40
|
McCorquodale EM, Colyer CL. Indocyanine green as a noncovalent, pseudofluorogenic label for protein determination by capillary electrophoresis. Electrophoresis 2001; 22:2403-8. [PMID: 11519943 DOI: 10.1002/1522-2683(200107)22:12<2403::aid-elps2403>3.0.co;2-b] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Indocyanine green (ICG)--a negatively charged, polymethine dye--can interact noncovalently with proteins to form fluorescent complexes, with excitation and emission maxima near 780 and 820 nm, respectively. This behavior was realized utilizing either a 100 mM phosphate buffer or a 25 mM citric acid buffer, both at pH 3.1. The behavior of ICG under these conditions, termed pseudofluorogenic, rendered the dye suitable for use as a label for protein determination in capillary electrophoresis with diode laser-induced fluorescence detection (CE-LIF). To this end, pseudofluorogenic ICG was used both as an on-column label for human serum albumin (HSA) and as a precolumn label for a model mixture of proteins, including ribonuclease A, transferrin, and cytochrome c. These ICG-labeled proteins were successfully resolved in less than 11 min, with no interference from excess, unbound dye.
Collapse
Affiliation(s)
- E M McCorquodale
- Department of Chemistry, Wake Forest University, Winston-Salem, NC 27109, USA
| | | |
Collapse
|
41
|
Liu Y, Foote RS, Jacobson SC, Ramsey RS, Ramsey JM. Electrophoretic separation of proteins on a microchip with noncovalent, postcolumn labeling. Anal Chem 2000; 72:4608-13. [PMID: 11028618 DOI: 10.1021/ac000625f] [Citation(s) in RCA: 88] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Proteins were separated by microchip capillary electrophoresis and labeled on-chip by postcolumn addition of a fluorogenic dye, NanoOrange, for detection by laser-induced fluorescence. NanoOrange binds noncovalently with hydrophobic protein regions to form highly fluorescent complexes. Kinetic measurements of complex formation on the microchips suggest that the reaction rate is near the diffusion limit under the conditions used for protein separation. Little or no band broadening is caused by the postcolumn labeling step. Lower limits of detection for model proteins, alpha-lactalbumin, beta-lactoglobulin A, and beta-lactoglobulin B, were <0.5 pg (approximately 30 amol) of injected sample. The relative fluorescence and reaction rates are compared with those of a number of other fluorogenic dyes used for protein labeling.
Collapse
Affiliation(s)
- Y Liu
- Oak Ridge National Laboratory, Tennessee 37831-6142, USA
| | | | | | | | | |
Collapse
|
42
|
Abstract
As capillary electrophoresis continues to focus on miniaturization, either through reducing column dimensions or situating entire electrophoresis systems on planar chips, advances in detection become necessary to meet the challenges posed by these electrophoresis platforms. The challenges result from the fact that miniaturization requires smaller load volumes, demanding highly sensitive detection. In addition, many times multiple targets must be analyzed simultaneously (multiplexed applications), further complicating detection. Near-infrared (NIR) fluorescence offers an attractive alternative to visible fluorescence for critical applications in capillary electrophoresis due to the impressive limits of detection that can be generated, in part resulting from the low background levels that are observed in the NIR. Advances in instrumentation and fluorogenic labels appropriate for NIR monitoring have led to a growing number of examples of the use of NIR fluorescence in capillary electrophoresis. In this review, we will cover instrumental components used to construct ultrasensitive NIR fluorescence detectors, including light sources and photon transducers. In addition, we will discuss various types of labeling dyes appropriate for NIR fluorescence and finally, we will present several applications that have used NIR fluorescence in capillary electrophoresis, especially for DNA sequencing and fragment analysis.
Collapse
Affiliation(s)
- S McWhorter
- Louisiana State University, Department of Chemistry, Baton Rouge 70803-1804, USA
| | | |
Collapse
|
43
|
Moody ED, Viskari PJ, Colyer CL. Non-covalent labeling of human serum albumin with indocyanine green: a study by capillary electrophoresis with diode laser-induced fluorescence detection. JOURNAL OF CHROMATOGRAPHY. B, BIOMEDICAL SCIENCES AND APPLICATIONS 1999; 729:55-64. [PMID: 10410927 DOI: 10.1016/s0378-4347(99)00121-8] [Citation(s) in RCA: 75] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Indocyanine green (ICG) is a negatively charged, water-soluble, tricarbocyanine dye used primarily for medical imaging. ICG is only weakly fluorescent in the near-infrared region in its free (unbound) state in dilute aqueous solution. However, when non-covalently bound to protein, its fluorescence is greatly enhanced, making it a candidate for diode laser-induced fluorescence (diode-LIF) detection of proteins in capillary electrophoresis (CE). This paper investigates the suitability of ICG as a fluorescent label for the separation and detection of human serum albumin (HSA) by CE with diode-LIF detection. Specifically, we have considered the separation conditions necessary to resolve free ICG from ICG-HSA complexes; the limits of detection for free and HSA-bound ICG; the stability of aqueous ICG and ICG-HSA solutions over time; and the stoichiometry of the ICG-HSA complex.
Collapse
Affiliation(s)
- E D Moody
- Department of Chemistry, Wake Forest University, Winston-Salem, NC 27109, USA
| | | | | |
Collapse
|
44
|
Abstract
The evanescent wave (EW) component of light propagated via fiber-optic wave-guides can be used to both sense and transmit information regarding the immediate environment of the fiber's surface. In this article, an outline of the theoretical and practical aspects of this emerging methodology is given, as well as a discussion of the advantages, disadvantages, and limitations of the technique. Examples are given of how EW spectroscopy may be used in the analysis of pharmaceutical systems. Evaluation of attributes of components of EW spectroscopy allows prediction of the future for this rapidly evolving area of photonics.
Collapse
Affiliation(s)
- E Squillante
- Department of Pharmacy and Administrative Sciences, St. John's University, Jamaica, New York 11439, USA
| |
Collapse
|
45
|
Lee SK, Richter MM, Strekowski L, Bard AJ. Electrogenerated Chemiluminescence. 61. Near-IR Electrogenerated Chemiluminescence, Electrochemistry, and Spectroscopic Properties of a Heptamethine Cyanine Dye in MeCN. Anal Chem 1997. [DOI: 10.1021/ac9704570] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sang Kwon Lee
- Department of Chemistry and Biochemistry, The University of Texas at Austin, Austin, Texas 78712, and Department of Chemistry, Georgia State University, Atlanta, Georgia 30303
| | - Mark M. Richter
- Department of Chemistry and Biochemistry, The University of Texas at Austin, Austin, Texas 78712, and Department of Chemistry, Georgia State University, Atlanta, Georgia 30303
| | - Lucjan Strekowski
- Department of Chemistry and Biochemistry, The University of Texas at Austin, Austin, Texas 78712, and Department of Chemistry, Georgia State University, Atlanta, Georgia 30303
| | - Allen J. Bard
- Department of Chemistry and Biochemistry, The University of Texas at Austin, Austin, Texas 78712, and Department of Chemistry, Georgia State University, Atlanta, Georgia 30303
| |
Collapse
|
46
|
Legendre BL, Moberg DL, Williams DC, Soper SA. Ultrasensitive near-infrared laser-induced fluorescence detection in capillary electrophoresis using a diode laser and avalanche photodiode. J Chromatogr A 1997; 779:185-94. [PMID: 9335121 DOI: 10.1016/s0021-9673(97)00405-6] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
A sensitive fluorescence detector for capillary electrophoresis consisting of a semiconductor near-infrared diode laser and a single photon avalanche diode (SPAD) is described. The sensitivity of this system was demonstrated by the separation and analysis of four tricarbocyanine dyes using capillary electrophoresis and a running buffer consisting of 98% methanol and 2% water with 40 mM borate (pH 9.4). The LOD for the dye, IR-132, was found to be 4.41 zmol with the dynamic range found to be approximately four orders of magnitude in concentration. Based on the sampling volume of the system, the number of molecules actually detected at this LOD was approximately 27. To further demonstrate the utility of this diode-based detector, various amino acids were derivatized with a highly anionic near-IR labelling dye. The conjugates were separated in a running buffer comprised of predominately methanol and a cationic surfactant added to reverse the electroosmotic flow. The LOD values for various amino acids were found to be in the low zmol range.
Collapse
Affiliation(s)
- B L Legendre
- Department of Chemistry, Louisiana State University, Baton Rouge 70803-1804, USA
| | | | | | | |
Collapse
|
47
|
|
48
|
Owens CV, Davidson YY, Kar S, Soper SA. High-Resolution Separation of DNA Restriction Fragments Using Capillary Electrophoresis with Near-IR, Diode-Based, Laser-Induced Fluorescence Detection. Anal Chem 1997. [DOI: 10.1021/ac960975v] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Clyde V. Owens
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803-1804
| | - Yolanda Y. Davidson
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803-1804
| | - Satyajit Kar
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803-1804
| | - Steven A. Soper
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803-1804
| |
Collapse
|
49
|
Strekowski L, Lipowska M, Górecki T, Mason JC, Patonay G. Functionalization of near-infrared cyanine dyes. J Heterocycl Chem 1996. [DOI: 10.1002/jhet.5570330622] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
50
|
Raymond DE, Manz A, Widmer HM. Continuous Separation of High Molecular Weight Compounds Using a Microliter Volume Free-Flow Electrophoresis Microstructure. Anal Chem 1996; 68:2515-22. [DOI: 10.1021/ac950766v] [Citation(s) in RCA: 119] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Daniel E. Raymond
- Ciba-Geigy Ltd., Corporate Analytical Research, CH-4002 Basel, Switzerland
| | - Andreas Manz
- Ciba-Geigy Ltd., Corporate Analytical Research, CH-4002 Basel, Switzerland
| | - H. Michael Widmer
- Ciba-Geigy Ltd., Corporate Analytical Research, CH-4002 Basel, Switzerland
| |
Collapse
|