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Fluorescent Multifunctional Organic Nanoparticles for Drug Delivery and Bioimaging: A Tutorial Review. Pharmaceutics 2022; 14:pharmaceutics14112498. [PMID: 36432688 PMCID: PMC9698844 DOI: 10.3390/pharmaceutics14112498] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 11/08/2022] [Accepted: 11/08/2022] [Indexed: 11/19/2022] Open
Abstract
Fluorescent organic nanoparticles (FONs) are a large family of nanostructures constituted by organic components that emit light in different spectral regions upon excitation, due to the presence of organic fluorophores. FONs are of great interest for numerous biological and medical applications, due to their high tunability in terms of composition, morphology, surface functionalization, and optical properties. Multifunctional FONs combine several functionalities in a single nanostructure (emission of light, carriers for drug-delivery, functionalization with targeting ligands, etc.), opening the possibility of using the same nanoparticle for diagnosis and therapy. The preparation, characterization, and application of these multifunctional FONs require a multidisciplinary approach. In this review, we present FONs following a tutorial approach, with the aim of providing a general overview of the different aspects of the design, preparation, and characterization of FONs. The review encompasses the most common FONs developed to date, the description of the most important features of fluorophores that determine the optical properties of FONs, an overview of the preparation methods and of the optical characterization techniques, and the description of the theoretical approaches that are currently adopted for modeling FONs. The last part of the review is devoted to a non-exhaustive selection of some recent biomedical applications of FONs.
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Takayanagi N, Momose S, Kikuchi J, Tanaka Y, Anan T, Yamashita T, Higashi M, Tokuhira M, Kizaki M, Tamaru JI. Fluorescent nanoparticle-mediated semiquantitative MYC protein expression analysis in morphologically diffuse large B-cell lymphoma. Pathol Int 2021; 71:594-603. [PMID: 34171161 DOI: 10.1111/pin.13131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 05/18/2021] [Indexed: 11/29/2022]
Abstract
The current World Health Organization (WHO) classification defines a new disease entity of high-grade B-cell lymphoma with MYC and BCL2 and/or BCL6 rearrangements, making fluorescence in situ hybridization (FISH) screening for these genes mandatory. In addition, the prognostic significance of MYC expression was reported, with a cut-off value of 40%. However, interobserver discrepancies arise due to the heterogeneous intensity of MYC expression by immunohistochemistry. Moreover, a cut-off value of positivity for MYC protein in diffuse large B-cell lymphoma (DLBCL) varies among studies at present. Here, we applied a high-sensitivity semiquantitative immunohistochemical technique using fluorescent nanoparticles called phosphor-integrated dots (PID) to evaluate the MYC expression in 50 de novo DLBCL cases, and compared it with the conventional diaminobenzidine (DAB)-developing system. The high MYC expression detected by the PID-mediated system predicted poor overall survival in DLBCL patients. However, we found no prognostic value of MYC protein expression for any cut-off value by the DAB-developing system, even if the intensity was considered. These results indicate that the precise evaluation of MYC protein expression can clarify the prognostic values in DLBCL, irrespective of MYC rearrangement.
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Affiliation(s)
- Natsuko Takayanagi
- Department of Pathology, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - Shuji Momose
- Department of Pathology, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - Jun Kikuchi
- Department of Pathology, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - Yuka Tanaka
- Department of Hematology, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - Tomoe Anan
- Department of Hematology, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - Takahisa Yamashita
- Department of Pathology, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - Morihiro Higashi
- Department of Pathology, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - Michihide Tokuhira
- Department of Hematology, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - Masahiro Kizaki
- Department of Hematology, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - Jun-Ichi Tamaru
- Department of Pathology, Saitama Medical Center, Saitama Medical University, Saitama, Japan
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Guo Z, Tada H, Kitamura N, Hamada Y, Miyashita M, Harada-Shoji N, Sato A, Hamanaka Y, Tsuboi K, Harada N, Takano-Kasuya M, Okada H, Nakano Y, Ohuchi N, Hayashi SI, Ishida T, Gonda K. Automated Quantification of Extranuclear ERα using Phosphor-integrated Dots for Predicting Endocrine Therapy Resistance in HR +/HER2 - Breast Cancer. Cancers (Basel) 2019; 11:cancers11040526. [PMID: 31013810 PMCID: PMC6520781 DOI: 10.3390/cancers11040526] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Revised: 04/01/2019] [Accepted: 04/09/2019] [Indexed: 11/26/2022] Open
Abstract
In addition to genomic signaling, Estrogen receptor alpha (ERα) is associated with cell proliferation and survival through extranuclear signaling contributing to endocrine therapy (ET) resistance. However, the relationship between extranuclear ERα and ET resistance has not been extensively studied. We sought to measure extranuclear ERα expression by immunohistochemistry using phosphor-integrated dots (IHC-PIDs) and to assess its predictive value for ET resistance. After quantitative detection of ERα by IHC-PIDs in vitro, we developed “the nearest-neighbor method” to calculate the extranuclear ERα. Furthermore, tissue sections from 65 patients with HR+/HER2- BC were examined by IHC-PIDs, and the total ERα, nuclear ERα, extranuclear ERα PIDs score, and ratio of extranuclear-to-nuclear ERα (ENR) were measured using the novel method. We demonstrate that quantification of ERα using IHC-PIDs exhibited strong correlations to real-time qRT-PCR (r2 = 0.94) and flow cytometry (r2 = 0.98). High ERα ENR was significantly associated with poor overall survival (p = 0.048) and disease-free survival (DFS) (p = 0.007). Multivariate analysis revealed that the ERα ENR was an independent prognostic factor for DFS [hazard ratio, 3.8; 95% CI, 1.4–11.8; p = 0.006]. Our automated measurement has high accuracy to localize and assess extranuclear ERα. A high ERα ENR in HR+/HER2− BC indicates decreased likelihood of benefiting from ET.
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Affiliation(s)
- Zhaorong Guo
- Department of Breast and Endocrine Surgical Oncology, Graduate School of Medicine, Tohoku University, Sendai, Miyagi 980-8574, Japan.
| | - Hiroshi Tada
- Department of Breast and Endocrine Surgical Oncology, Graduate School of Medicine, Tohoku University, Sendai, Miyagi 980-8574, Japan.
| | - Narufumi Kitamura
- Department of Medical Physics, Graduate School of Medicine, Tohoku University, Sendai, Miyagi 980-8574, Japan.
| | - Yoh Hamada
- Department of Medical Physics, Graduate School of Medicine, Tohoku University, Sendai, Miyagi 980-8574, Japan.
| | - Minoru Miyashita
- Department of Breast and Endocrine Surgical Oncology, Graduate School of Medicine, Tohoku University, Sendai, Miyagi 980-8574, Japan.
| | - Narumi Harada-Shoji
- Department of Breast and Endocrine Surgical Oncology, Graduate School of Medicine, Tohoku University, Sendai, Miyagi 980-8574, Japan.
| | - Akiko Sato
- Department of Breast and Endocrine Surgical Oncology, Graduate School of Medicine, Tohoku University, Sendai, Miyagi 980-8574, Japan.
| | - Yohei Hamanaka
- Department of Breast and Endocrine Surgical Oncology, Graduate School of Medicine, Tohoku University, Sendai, Miyagi 980-8574, Japan.
| | - Kouki Tsuboi
- Department of Molecular and Functional Dynamics, Graduate School of Medicine, Tohoku University, Sendai, Miyagi 980-8574, Japan.
| | - Nobuhisa Harada
- Bio Systems Development Group, Bio Advanced Technology Division, Corporate R&D Headquarters, KONICA MINOLTA, INC., Hino, Tokyo 191-8511, Japan.
| | - Mayumi Takano-Kasuya
- Department of Medical Physics, Graduate School of Medicine, Tohoku University, Sendai, Miyagi 980-8574, Japan.
| | - Hisatake Okada
- Bio Systems Development Group, Bio Advanced Technology Division, Corporate R&D Headquarters, KONICA MINOLTA, INC., Hino, Tokyo 191-8511, Japan.
| | - Yasushi Nakano
- Bio Systems Development Group, Bio Advanced Technology Division, Corporate R&D Headquarters, KONICA MINOLTA, INC., Hino, Tokyo 191-8511, Japan.
| | - Noriaki Ohuchi
- Department of Breast and Endocrine Surgical Oncology, Graduate School of Medicine, Tohoku University, Sendai, Miyagi 980-8574, Japan.
| | - Shin-Ichi Hayashi
- Department of Molecular and Functional Dynamics, Graduate School of Medicine, Tohoku University, Sendai, Miyagi 980-8574, Japan.
| | - Takanori Ishida
- Department of Breast and Endocrine Surgical Oncology, Graduate School of Medicine, Tohoku University, Sendai, Miyagi 980-8574, Japan.
| | - Kohsuke Gonda
- Department of Medical Physics, Graduate School of Medicine, Tohoku University, Sendai, Miyagi 980-8574, Japan.
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Fujisawa T, Tsuta K, Yanagimoto H, Yagi M, Suzuki K, Nishikawa K, Takahashi M, Okada H, Nakano Y, Iwai H. Quantitative immunohistochemical assay with novel digital immunostaining for comparisons of PD-L1 antibodies. Mol Clin Oncol 2019; 10:391-396. [PMID: 30847180 PMCID: PMC6388504 DOI: 10.3892/mco.2019.1801] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Accepted: 01/09/2019] [Indexed: 11/12/2022] Open
Abstract
One obstacle in diagnostic pathology is the harmonization of one drug-one diagnostic tests for programmed death ligand-1 (PD-L1). There are many challenges in accurate comparisons of diagnostic tests, such as differences in the titer of each antibody, detection system and dynamic range of visualization. Our previously developed digital immunostaining technique is highly sensitive and quantitative with the ability to quantify particles that bind in a one-to-one fashion with antibody in each cell. Determining the differences in the titer of each antibody with digital immunostaining may be beneficial for future harmonized analysis. To demonstrate the accuracy of digital immunostaining, the present study compared the number of particles with ELISA and nCounter data from five cell lines. NCI-H460 exhib-ited the highest level of PD-L1 protein, followed by A549, PC-3, NCI-H1299, and NCI-H446 cells. In addition, the PD-L1 mRNA values determined by nCounter corresponded with the order of the protein levels determined by ELISA. The present study revealed that digital immunostaining for PD-L1 was highly associated with ELISA and nCounter data. Among the four antibodies tested, the titer of all but SP142 coincided with ELISA and nCounter data. These results indicated that our digital immunostaining technique may be beneficial for future harmonized analysis.
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Affiliation(s)
- Takuo Fujisawa
- Department of Otolaryngology, Head and Neck Surgery, Kansai Medical University, Osaka 573-1010, Japan
| | - Koji Tsuta
- Department of Pathology and Laboratory Medicine, Kansai Medical University, Osaka 573-1010, Japan
| | | | - Masao Yagi
- Department of Otolaryngology, Head and Neck Surgery, Kansai Medical University, Osaka 573-1010, Japan
| | - Kensuke Suzuki
- Department of Otolaryngology, Head and Neck Surgery, Kansai Medical University, Osaka 573-1010, Japan
| | - Kenji Nishikawa
- Bio System Development Group, Bio Advanced Technology Division, Corporate R&D Headquarters, Konica-Minolta, Inc., Tokyo 191-8511, Japan
| | - Masaru Takahashi
- Bio System Development Group, Bio Advanced Technology Division, Corporate R&D Headquarters, Konica-Minolta, Inc., Tokyo 191-8511, Japan
| | - Hisatake Okada
- Bio System Development Group, Bio Advanced Technology Division, Corporate R&D Headquarters, Konica-Minolta, Inc., Tokyo 191-8511, Japan
| | - Yasushi Nakano
- Bio System Development Group, Bio Advanced Technology Division, Corporate R&D Headquarters, Konica-Minolta, Inc., Tokyo 191-8511, Japan
| | - Hiroshi Iwai
- Department of Otolaryngology, Head and Neck Surgery, Kansai Medical University, Osaka 573-1010, Japan
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Quantitative diagnostic imaging of cancer tissues by using phosphor-integrated dots with ultra-high brightness. Sci Rep 2017; 7:7509. [PMID: 28790306 PMCID: PMC5548777 DOI: 10.1038/s41598-017-06534-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Accepted: 06/14/2017] [Indexed: 01/18/2023] Open
Abstract
The quantitative sensitivity and dynamic range of conventional immunohistochemistry (IHC) with 3,3′-diaminobenzidine (IHC-DAB) used in pathological diagnosis in hospitals are poor, because enzyme activity can affect the IHC-DAB chromogenic reaction. Although fluorescent IHC can effectively increase the quantitative sensitivity of conventional IHC, tissue autofluorescence interferes with the sensitivity. Here, we created new fluorescent nanoparticles called phosphor-integrated dots (PIDs). PIDs have 100-fold greater brightness and a more than 300-fold greater dynamic range than those of commercially available fluorescent nanoparticles, quantum dots, whose fluorescence intensity is comparable to tissue autofluorescence. Additionally, a newly developed image-processing method enabled the calculation of the PID particle number in the obtained image. To quantify the sensitivity of IHC using PIDs (IHC-PIDs), the IHC-PIDs method was compared with fluorescence-activated cell sorting (FACS), a method well suited for evaluating total protein amount, and the two values exhibited strong correlation (R = 0.94). We next applied IHC-PIDs to categorize the response to molecular target-based drug therapy in breast cancer patients. The results suggested that the PID particle number estimated by IHC-PIDs of breast cancer tissues obtained from biopsy before chemotherapy can provide a score for predicting the therapeutic effect of the human epidermal growth factor receptor 2-targeted drug trastuzumab.
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PD-L1 expression in pancreatic ductal adenocarcinoma is a poor prognostic factor in patients with high CD8 + tumor-infiltrating lymphocytes: highly sensitive detection using phosphor-integrated dot staining. Int J Clin Oncol 2017; 22:726-733. [PMID: 28314962 PMCID: PMC5533855 DOI: 10.1007/s10147-017-1112-3] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Accepted: 02/25/2017] [Indexed: 12/13/2022]
Abstract
Background Pancreatic ductal adenocarcinoma (PDAC) has an extremely poor prognosis. For the development of more effective immunotherapies, it is first necessary to elucidate the immunological escape mechanisms. In this study, we applied our recently developed highly sensitive immunostaining method employing fluorescent phosphor-integrated dot (PID) nanoparticles to evaluate the prevalence of programmed death ligand 1 (PD-L1) in patients with PDAC. Methods This study included 42 patients with PDAC who underwent pancreatectomy. We evaluated PD-L1 expression in these patients using PID staining and correlated PD-L1 expression level with each patient’s clinico-pathological features. Results PD-L1 expression was detected in 61.9% (26/42) of the patients with PDAC by PID staining. There was a significant difference in overall survival between PD-L1-positive and PD-L1-negative patients [hazard ratio (HR) 2.07, 95% confidence interval (CI) 1.00–4.54; P = 0.049]. Among CD8+-tumor-infiltrating lymphocyte-positive cases, the overall survival of PD-L1-positive patients was significantly poorer than that of PD-L1-negative patients (HR 3.84, 95% CI 1.59–10.35; P = 0.003). Univariate and multivariate analyses indicated that PD-L1 expression was an independent predictive poor prognostic factor in patients with PDAC. Conclusions PD-L1 expression appears to be an important prognostic factor in patients with PDAC who underwent surgical resection.
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Gonda K, Miyashita M, Higuchi H, Tada H, Watanabe TM, Watanabe M, Ishida T, Ohuchi N. Predictive diagnosis of the risk of breast cancer recurrence after surgery by single-particle quantum dot imaging. Sci Rep 2015; 5:14322. [PMID: 26392299 PMCID: PMC4585722 DOI: 10.1038/srep14322] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2014] [Accepted: 08/24/2015] [Indexed: 01/06/2023] Open
Abstract
In breast cancer, the prognosis of human epidermal growth factor receptor 2 (HER2)-positive patients (20-25%) has been dramatically improved by the clinical application of the anti-HER2 antibody drugs trastuzumab and pertuzumab. However, the clinical outcomes of HER2-negative cases with a poor prognosis have not improved, and novel therapeutic antibody drugs or diagnostic molecular markers of prognosis are urgently needed. Here, we targeted protease-activated receptor 1 (PAR1) as a new biomarker for HER2-negative patients. The developed anti-PAR1 antibody inhibited PAR1 activation by matrix metalloprotease 1 and thereby prevented cancer-cell migration and invasion. To estimate PAR1 expression levels in HER2-negative patient tissues using the antibody, user-friendly immunohistochemistry with fluorescence nanoparticles or quantum dots (QDs) was developed. Previously, immunohistochemistry with QDs was affected by tissue autofluorescence, making quantitative measurement extremely difficult. We significantly improved the quantitative sensitivity of immunohistochemistry with QDs by using an autofluorescence-subtracted image and single-QD imaging. The immunohistochemistry showed that PAR1 expression was strongly correlated with relapse-free survival time in HER2-negative breast cancer patients. Therefore, the developed anti-PAR1 antibody is a strong candidate for use as an anticancer drug and a prognostic biomarker for HER2-negative patients.
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Affiliation(s)
- Kohsuke Gonda
- Department of Medical Physics, Graduate School of Medicine, Tohoku University, Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan.,Department of Nano-Medical Science, Graduate School of Medicine, Tohoku University, Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan
| | - Minoru Miyashita
- Department of Surgical Oncology, Graduate School of Medicine, Tohoku University, Seiryo-machi, Aoba-ku, Sendai 980-8574, Japan
| | - Hideo Higuchi
- Department of Physics, Graduate School of Science, University of Tokyo, Hongo Bunkyou-ku Tokyo 113-0033, Japan
| | - Hiroshi Tada
- Department of Surgical Oncology, Graduate School of Medicine, Tohoku University, Seiryo-machi, Aoba-ku, Sendai 980-8574, Japan
| | - Tomonobu M Watanabe
- Laboratory for Comprehensive Bioimaging, RIKEN Quantitative Biology Center, 6-2-3, Furuedai, Suita, Osaka 565-0874, Japan
| | - Mika Watanabe
- Department of Pathology, Tohoku University Hospital, Seiryo-machi, Aoba-ku, Sendai 980-8574, Japan
| | - Takanori Ishida
- Department of Surgical Oncology, Graduate School of Medicine, Tohoku University, Seiryo-machi, Aoba-ku, Sendai 980-8574, Japan
| | - Noriaki Ohuchi
- Department of Nano-Medical Science, Graduate School of Medicine, Tohoku University, Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan.,Department of Surgical Oncology, Graduate School of Medicine, Tohoku University, Seiryo-machi, Aoba-ku, Sendai 980-8574, Japan
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Liu X, Hu R, Lian H, Liu Y, Liu J, Liu J, Lin G, Liu L, Duan X, Yong KT, Ye L. Dual-color immunofluorescent labeling with quantum dots of the diabetes-associated proteins aldose reductase and Toll-like receptor 4 in the kidneys of diabetic rats. Int J Nanomedicine 2015; 10:3651-62. [PMID: 26056446 PMCID: PMC4445876 DOI: 10.2147/ijn.s81395] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Diabetes is one of the major chronic diseases diagnosed worldwide with a common complication of diabetic nephropathy (DN). There are multiple possible mechanisms associated with DN. Aldose reductase (AR) and Toll-like receptor 4 (TLR4) may be involved in the occurrence and development of DN. Here, we describe the distribution of AR and TLR4 in cells and renal tissues of diabetic rats through a quantum dot (QD)-based immunofluorescence technique and conventional immunohistochemistry. As a new type of nanosized fluorophore, QDs have been recognized in imaging applications and have broad prospects in biomedical research. The results of the reported study demonstrate that both the AR and the TLR4 proteins were upregulated in the renal tissues of diabetic rats. Further, to explore the relationship between AR and TLR4 in the pathogenesis of DN, a dual-color immunofluorescent labeling technique based on QDs was applied, where the expressions of AR and TLR4 in the renal tissues of diabetic rats were simultaneously observed – for the first time, as far as we are aware. The optimized QD-based immunofluorescence technique has not only shown a satisfying sensitivity and specificity for the detection of biomarkers in cells and tissues, but also is a valuable supplement of immu-nohistochemistry. The QD-based multiplexed imaging technology provides a new insight into the mechanistic study of the correlation among biological factors as well as having potential applications in the diagnosis and treatment of diseases.
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Affiliation(s)
- Xiaomin Liu
- Institute of Gerontology and Geriatrics, Chinese PLA General Hospital, Beijing Key Lab of Aging and Geriatrics, Beijing, People's Republic of China
| | - Rui Hu
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, Singapore
| | - Hongwei Lian
- Institute of Gerontology and Geriatrics, Chinese PLA General Hospital, Beijing Key Lab of Aging and Geriatrics, Beijing, People's Republic of China ; Department of Emergency Medicine, Peking University Third Hospital, Beijing, People's Republic of China
| | - Yang Liu
- Department of Geriatric Nephrology, Chinese PLA General Hospital, Beijing, People's Republic of China
| | - Jing Liu
- Institute of Gerontology and Geriatrics, Chinese PLA General Hospital, Beijing Key Lab of Aging and Geriatrics, Beijing, People's Republic of China
| | - Jianwei Liu
- Institute of Gerontology and Geriatrics, Chinese PLA General Hospital, Beijing Key Lab of Aging and Geriatrics, Beijing, People's Republic of China
| | - Guimiao Lin
- Key Lab of Biomedical Engineering, School of Medical Sciences, Shenzhen University, Shenzhen, People's Republic of China
| | - Liwei Liu
- School of Science, Changchun University of Science and Technology, Changchun, People's Republic of China
| | - Xiaojian Duan
- Institute of Gerontology and Geriatrics, Chinese PLA General Hospital, Beijing Key Lab of Aging and Geriatrics, Beijing, People's Republic of China
| | - Ken-Tye Yong
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, Singapore
| | - Ling Ye
- Institute of Gerontology and Geriatrics, Chinese PLA General Hospital, Beijing Key Lab of Aging and Geriatrics, Beijing, People's Republic of China
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Vu TQ, Lam WY, Hatch EW, Lidke DS. Quantum dots for quantitative imaging: from single molecules to tissue. Cell Tissue Res 2015; 360:71-86. [PMID: 25620410 DOI: 10.1007/s00441-014-2087-2] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Accepted: 12/04/2014] [Indexed: 10/24/2022]
Abstract
Since their introduction to biological imaging, quantum dots (QDs) have progressed from a little known, but attractive, technology to one that has gained broad application in many areas of biology. The versatile properties of these fluorescent nanoparticles have allowed investigators to conduct biological studies with extended spatiotemporal capabilities that were previously not possible. In this review, we focus on QD applications that provide enhanced quantitative information concerning protein dynamics and localization, including single particle tracking and immunohistochemistry, and finish by examining the prospects of upcoming applications, such as correlative light and electron microscopy and super-resolution. Advances in single molecule imaging, including multi-color and three-dimensional QD tracking, have provided new insights into the mechanisms of cell signaling and protein trafficking. New forms of QD tracking in vivo have allowed the observation of biological processes at molecular level resolution in the physiological context of the whole animal. Further methodological development of multiplexed QD-based immunohistochemistry assays should enable more quantitative analysis of key proteins in tissue samples. These advances highlight the unique quantitative data sets that QDs can provide to further our understanding of biological and disease processes.
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Affiliation(s)
- Tania Q Vu
- Department of Biomedical Engineering, School of Medicine, Oregon Health and Science University, Portland, Ore., USA,
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Gonda K, Hamada Y, Kitamura N, Tada H, Miyashita M, Kamei T, Ishida T, Ohuchi N. Highly Sensitive Imaging of Cancer with Functional Nanoparticles. J PHOTOPOLYM SCI TEC 2015. [DOI: 10.2494/photopolymer.28.731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Kohsuke Gonda
- Department of Medical Physics, Graduate School of Medicine, Tohoku University
- Department of Nano-Medical Science, Graduate School of Medicine, Tohoku University
| | - Yoh Hamada
- Department of Nano-Medical Science, Graduate School of Medicine, Tohoku University
| | - Narufumi Kitamura
- Department of Nano-Medical Science, Graduate School of Medicine, Tohoku University
- Department of Surgical Oncology, Graduate School of Medicine, Tohoku University
| | - Hiroshi Tada
- Department of Surgical Oncology, Graduate School of Medicine, Tohoku University
| | - Minoru Miyashita
- Department of Surgical Oncology, Graduate School of Medicine, Tohoku University
| | - Takashi Kamei
- Department of Advanced Surgical Science and Technology, Graduate School of Medicine, Tohoku University
| | - Takanori Ishida
- Department of Surgical Oncology, Graduate School of Medicine, Tohoku University
| | - Noriaki Ohuchi
- Department of Nano-Medical Science, Graduate School of Medicine, Tohoku University
- Department of Surgical Oncology, Graduate School of Medicine, Tohoku University
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