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Varmazyari A, Taghizadehghalehjoughi A, Sevim C, Baris O, Eser G, Yildirim S, Hacimuftuoglu A, Buha A, Wallace DR, Tsatsakis A, Aschner M, Mezhuev Y. Cadmium sulfide-induced toxicity in the cortex and cerebellum: In vitro and in vivo studies. Toxicol Rep 2020; 7:637-648. [PMID: 32489905 PMCID: PMC7260592 DOI: 10.1016/j.toxrep.2020.04.011] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2019] [Revised: 04/17/2020] [Accepted: 04/21/2020] [Indexed: 11/23/2022] Open
Abstract
Living organisms have an innate ability to regulate the synthesis of inorganic materials, such as bones and teeth in humans. Cadmium sulfide (CdS) can be utilized as a quantum dot that functions as a unique light-emitting semiconductor nanocrystal. The increased use in CdS has led to an increased inhalation and ingestion rate of CdS by humans which requires a broader appreciation for the acute and chronic toxicity of CdS. We investigated the toxic effects of CdS on cerebellar cell cultures and rat brain. We employed a 'green synthesis' biosynthesis process to obtain biocompatible material that can be used in living organisms, such as Viridibacillus arenosi K64. Nanocrystal formation was initiated by adding CdCl2 (1 mM) to the cell cultures. Our in vitro results established that increased concentrations of CdS (0.1 μg/mL) lead to decreased cell viability as assessed using 3-[4,5-dimethylthiazole-2-yl]-2,5-diphenyltetrazolium bromide (MTT), total antioxidant capacity (TAC), and total oxidant status (TOS). The in vivo studies showed that exposure to CdS (1 mg/kg) glial fibrillary acidic protein (GFAP) and 8-hydroxy-2' -deoxyguanosine (8-OHdG) were increased. Collectively, we describe a model system that addresses the process from the synthesis to the neurotoxicity assessment for CdS both in vitro and in vivo. These data will be beneficial in establishing a more comprehensive pathway for the understanding of quantum dot-induced neurotoxicity.
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Affiliation(s)
- Atefeh Varmazyari
- Department of Nanoscience and Nanoengineering, Institute of Naturel and Applied Sciences, Ataturk University, Postal Code 25240, Erzurum, Turkey
| | - Ali Taghizadehghalehjoughi
- Department of Nanoscience and Nanoengineering, Institute of Naturel and Applied Sciences, Ataturk University, Postal Code 25240, Erzurum, Turkey
- Department of Pharmacology and Toxicology, Faculty of Veterinary Science, Ataturk University, Postal code 25240, Erzurum, Turkey
| | - Cigdem Sevim
- Department of Pharmacology and Toxicology, Faculty of Veterinary Science, Ataturk University, Postal code 25240, Erzurum, Turkey
| | - Ozlem Baris
- Department of Nanoscience and Nanoengineering, Institute of Naturel and Applied Sciences, Ataturk University, Postal Code 25240, Erzurum, Turkey
| | - Gizem Eser
- Vocational School of Veterinary Laboratory Assistant Program, Igdir University, Postal Code 76103, İgdir, Turkey
| | - Serkan Yildirim
- Department of Pathology, Faculty of Medicine Science, Ataturk University, Postal Code 25240, Erzurum, Turkey
| | - Ahmet Hacimuftuoglu
- Department of Pharmacology, Faculty of Medicine Science, Atatürk University, Postal Code 25240, Erzurum, Turkey
| | - Aleksandra Buha
- Department of Toxicology "Akademik Danilo Soldatović", Faculty of Pharmacy, University of Belgrade, Postal Code 11000, Belgrade, Serbia
| | - David R Wallace
- Department of Pharmacology, School of Biomedical Sciences, Oklahoma State University Center for Health Sciences, Postal Code 74107, Tulsa, OK, USA
| | - Aristidis Tsatsakis
- Department of Toxicology & Forensic Sciences, Faculty Medicine, University of Crete, Postal Code 74100, Heraklion, Greece
| | - Michael Aschner
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY 10463, USA
| | - Yaroslav Mezhuev
- Center of Biomaterials, D. Mendeleev University of Chemical Technology of Russia, Postal Code 125047, Moscow, Russia
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Bioimprinting for multiplex luminescent detection of deoxynivalenol and zearalenone. Talanta 2019; 192:169-174. [DOI: 10.1016/j.talanta.2018.09.042] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Revised: 09/08/2018] [Accepted: 09/11/2018] [Indexed: 12/30/2022]
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Monakhova YB, Goryacheva IY. Chemometric analysis of luminescent quantum dots systems: Long way to go but first steps taken. Trends Analyt Chem 2016. [DOI: 10.1016/j.trac.2016.05.017] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Analyzing simultaneous positive expression of EZH2 and P53 protein to improve predictive value in cervical squamous cell carcinoma. Int J Gynecol Cancer 2015; 24:1653-8. [PMID: 25275664 DOI: 10.1097/igc.0000000000000273] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
OBJECTIVE The current study was undertaken to investigate the predictive value of simultaneous enhancer of zeste homolog 2 (EZH2) and P53 expression in lesions of patients with cervical squamous cell carcinoma. METHODS Quantum dot double fluorescence staining was applied to detect EZH2 and P53 protein in biopsy tissue of 168 patients with cervical squamous cell carcinoma. The expression was classified into double positive (EZH2 and P53 were positively expressed), single positive (either EZH2 or P53 was positively expressed), and double negative (neither was positively expressed). The EZH2 and P53 expression, clinical stages of cervical cancer, lymph node metastasis, progression-free survival, and overall survival were analyzed. RESULTS A relationship of EZH2 and P53 expression with the clinical stage of cervical cancer and lymph node metastasis was indicated. Simultaneous detection of both proteins could partly predict prognosis, consistent with previous studies' results. The current study demonstrated that the expression levels of EZH2 and P53 in tumor tissue and the proportion of cases with double-positive expression significantly increased with increasing clinical stages of cancer, also confirming up-regulated expression of EZH2 and P53 with increasing stages. These findings may suggest that the 2 proteins were involved in the development of cervical cancer, but the nature of their interaction is undefined. The increase of EZH2 and P53 expression in patients with lymph node metastasis indicated that they may be involved in metastasis of cervical cancer. CONCLUSION Simultaneous positive EZH2 and P53 expression could improve the predictive value of a poor prognosis in cervical cancer.
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Beloglazova N, Speranskaya E, Wu A, Wang Z, Sanders M, Goftman V, Zhang D, Goryacheva I, De Saeger S. Novel multiplex fluorescent immunoassays based on quantum dot nanolabels for mycotoxins determination. Biosens Bioelectron 2014; 62:59-65. [DOI: 10.1016/j.bios.2014.06.021] [Citation(s) in RCA: 92] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Accepted: 06/03/2014] [Indexed: 10/25/2022]
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Rakovich TY, Mahfoud OK, Mohamed BM, Prina-Mello A, Crosbie-Staunton K, Van Den Broeck T, De Kimpe L, Sukhanova A, Baty D, Rakovich A, Maier SA, Alves F, Nauwelaers F, Nabiev I, Chames P, Volkov Y. Highly sensitive single domain antibody-quantum dot conjugates for detection of HER2 biomarker in lung and breast cancer cells. ACS NANO 2014; 8:5682-95. [PMID: 24873349 DOI: 10.1021/nn500212h] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Despite the widespread availability of immunohistochemical and other methodologies for screening and early detection of lung and breast cancer biomarkers, diagnosis of the early stage of cancers can be difficult and prone to error. The identification and validation of early biomarkers specific to lung and breast cancers, which would permit the development of more sensitive methods for detection of early disease onset, is urgently needed. In this paper, ultra-small and bright nanoprobes based on quantum dots (QDs) conjugated to single domain anti-HER2 (human epidermal growth factor receptor 2) antibodies (sdAbs) were applied for immunolabeling of breast and lung cancer cell lines, and their performance was compared to that of anti-HER2 monoclonal antibodies conjugated to conventional organic dyes Alexa Fluor 488 and Alexa Fluor 568. The sdAbs-QD conjugates achieved superior staining in a panel of lung cancer cell lines with differential HER2 expression. This shows their outstanding potential for the development of more sensitive assays for early detection of cancer biomarkers.
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Affiliation(s)
- Tatsiana Y Rakovich
- School of Medicine, Department of Clinical Medicine, Institute of Molecular Medicine, Trinity College , Dublin 8, Ireland
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Abstract
Here we present a detailed protocol for molecular profiling of individual cultured mammalian cells using multicolor multicycle immunofluorescence with quantum dot probes. It includes instructions for cell culture growth and processing (2 h + 48-72 h for cell growth), preparation and characterization of universal quantum dot probes (4.5 h + overnight incubation), cyclic cell staining (∼4.5 h per cycle) and image analysis (varies by application). The use of quantum dot fluorescent probes enables highly multiplexed, robust quantitative molecular imaging with a conventional fluorescence microscopy setup, whereas the probe preparation methodology, using a self-assembly between protein A-decorated universal quantum dots and intact primary antibodies, offers a fast, simple and purification-free route for an on-demand preparation of antibody-functionalized quantum dot libraries. As a result, this protocol can be used by biomedical researchers for a variety of cell staining applications, and, with further optimization, for staining of other biological specimens (e.g., clinical tissue sections).
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Fang M, Peng CW, Pang DW, Li Y. Quantum dots for cancer research: current status, remaining issues, and future perspectives. Cancer Biol Med 2013; 9:151-63. [PMID: 23691472 PMCID: PMC3643664 DOI: 10.7497/j.issn.2095-3941.2012.03.001] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2012] [Accepted: 08/19/2012] [Indexed: 12/31/2022] Open
Abstract
Cancer is a major threat to public health in the 21st century because it is one of the leading causes of death worldwide. The mechanisms of carcinogenesis, cancer invasion, and metastasis remain unclear. Thus, the development of a novel approach for cancer detection is urgent, and real-time monitoring is crucial in revealing its underlying biological mechanisms. With the optical and chemical advantages of quantum dots (QDs), QD-based nanotechnology is helpful in constructing a biomedical imaging platform for cancer behavior study. This review mainly focuses on the application of QD-based nanotechnology in cancer cell imaging and tumor microenvironment studies both in vivo and in vitro, as well as the remaining issues and future perspectives.
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Affiliation(s)
- Min Fang
- Department of Oncology, Zhongnan Hospital of Wuhan University, Hubei Key Laboratory of Tumor Biological Behaviors & Hubei Cancer Clinical Study Center, Wuhan 430071, China
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Xu H, Xu J, Wang X, Wu D, Chen ZG, Wang AY. Quantum dot-based, quantitative, and multiplexed assay for tissue staining. ACS APPLIED MATERIALS & INTERFACES 2013; 5:2901-7. [PMID: 23551017 DOI: 10.1021/am303267g] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
The excellent optical properties of quantum dots (QDs), such as high brightness, high photostability, continuous absorption, and narrow emission bandwidth, make them ideal as optical labels to develop QD-based immunohistofluorescence (IHF) imaging for multiplexing cancer biomarker detection on formalin-fixed and paraffin-embedded (FFPE) tissues. IHF is very important for the prediction of a patient's response to cancer chemotherapy or radiotherapy. QD-based IHF faces several challenges that differ from those encountered by organic dye based IHF for clinical assays. The current work addresses some of these issues. Initially, the chemical stability of QDs and organic dyes were compared. The results showed that QDs were stable for at least 5 months on FFPE tissue, whereas organic dyes were photobleached shortly after exposure to light. Various staining methods were also studied. QD fluorescence intensity on the tissue stained with primary antibody (Ab, p16, survivin, EF1α) conjugated QDs from our company was comparable to the signal from a commercially available method in which the tissue was stained with a primary p16 Ab and a QD-labeled secondary goat anti mouse Ab respectively. Finally, the effect of the amount of Ab conjugated to QD on tissue imaging was also studied. There was no significant increase in the QD fluorescence signal on tissues when the Ab:QD ratio increased from 5 to 30. In addition, protein G was tested as an adaptor protein to link Ab to QDs for IHF staining. However, the proper blocking of the protein G on QDs was necessary to reduce crosstalk. The biomarker quantification in QD-based IHF was validated by conventional Western blot and immunohistochemistry. The results contained herein demonstrate a promising application of QDs in multiplex detection and quantification of biomarkers.
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Affiliation(s)
- Hong Xu
- Ocean NanoTech, LLC, Springdale, Arkansas 72764, USA
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Montón H, Roldán M, Merkoçi A, Rossinyol E, Castell O, Nogués C. The use of quantum dots for immunochemistry applications. METHODS IN MOLECULAR BIOLOGY (CLIFTON, N.J.) 2012; 906:185-92. [PMID: 22791432 DOI: 10.1007/978-1-61779-953-2_13] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
Abstract
Immunocytochemistry and histochemistry are two most valuable immunochemistry techniques routinely used in biological laboratories. These techniques rely on the use of antibodies to label epitopes of interest in cells. At present, there is a wide range of commercially available organic dyes for labeling antibodies. However, limited extinction coefficients of organic dyes often make it difficult to achieve the optimal exposure and therefore fluorescence detection limit. Quantum dots (QDs) are fluorescent semiconductor nanocrystals which are advantageous over the organic fluorescent dyes in many aspects, principally their long-term luminescence stability, high brightness, and multicolor detection. Here, we describe the use of QDs for immunocytochemistry applications. We used three different antibodies-anti-β-tubulin monoclonal antibody for visualizing the microtubule network, the GM130 antibody for staining the Golgi complex, and the EEA1 antibody for detecting the endosomal system. We use the anti-mouse IgG antibody directly conjugated to QD655 quantum dots or anti-mouse IgG conjugated to biotin for tertiary detection with streptavidin-conjugated QD655.
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Affiliation(s)
- Helena Montón
- Institut Català de Nanotecnologia, Campus Universitat Autónoma de Barcelona, Bellaterra, Barcelona, Spain.
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Pericleous P, Gazouli M, Lyberopoulou A, Rizos S, Nikiteas N, Efstathopoulos EP. Quantum dots hold promise for early cancer imaging and detection. Int J Cancer 2012; 131:519-28. [PMID: 22411309 DOI: 10.1002/ijc.27528] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2012] [Accepted: 02/27/2012] [Indexed: 01/21/2023]
Abstract
Despite all major breakthroughs in recent years of research concerning the complex events that lead to cancer expression and metastasis, we are not yet able to effectively treat cancer that has spread to vital organs. The various clinical phases originating from cancer diagnosis through treatment and prognosis require a comprehensive understanding of these events, to utilise pre-symptomatic, minimally invasive and targeted cancer management techniques. Current imaging modalities such as ultrasound, computed tomography, magnetic resonance imaging and gamma scintigraphy facilitate the pre-operative study of tumours, but they have been rendered unable to visualise cancer in early stages, due to their intrinsic limitations. The semiconductor nanocrystal quantum dots (QDs) have excellent photo-physical properties, and the QDs-based probes have achieved encouraging developments in cellular (in vitro) and in vivo molecular imaging. However, the same unique physical and chemical properties which renowned QDs attractive may be associated with their potentially catastrophic effects on living cells and tissues. There are critical issues that need to be further examined to properly assess the risks associated with the manufacturing and use of QDs in cancer management. In this review, we aim to describe the current utilisation of QDs as well as their future prospective to decipher and confront cancer.
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Hu P, Chu GCY, Zhu G, Yang H, Luthringer D, Prins G, Habib F, Wang Y, Wang R, Chung LWK, Zhau HE. Multiplexed quantum dot labeling of activated c-Met signaling in castration-resistant human prostate cancer. PLoS One 2011; 6:e28670. [PMID: 22205960 PMCID: PMC3244400 DOI: 10.1371/journal.pone.0028670] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2011] [Accepted: 11/12/2011] [Indexed: 11/23/2022] Open
Abstract
The potential application of multiplexed quantum dot labeling (MQDL) for cancer detection and prognosis and monitoring therapeutic responses has attracted the interests of bioengineers, pathologists and cancer biologists. Many published studies claim that MQDL is effective for cancer biomarker detection and useful in cancer diagnosis and prognosis, these studies have not been standardized against quantitative biochemical and molecular determinations. In the present study, we used a molecularly characterized human prostate cancer cell model exhibiting activated c-Met signaling with epithelial to mesenchymal transition (EMT) and lethal metastatic progression to bone and soft tissues as the gold standard, and compared the c-Met cell signaling network in this model, in clinical human prostate cancer tissue specimens and in a castration-resistant human prostate cancer xenograft model. We observed c-Met signaling network activation, manifested by increased phosphorylated c-Met in all three. The downstream survival signaling network was mediated by NF-κB and Mcl-1 and EMT was driven by receptor activator of NF-κB ligand (RANKL), at the single cell level in clinical prostate cancer specimens and the xenograft model. Results were confirmed by real-time RT-PCR and western blots in a human prostate cancer cell model. MQDL is a powerful tool for assessing biomarker expression and it offers molecular insights into cancer progression at both the cell and tissue level with high degree of sensitivity.
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Affiliation(s)
- Peizhen Hu
- Uro-Oncology Research Program, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, California, United States of America
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Pellicciari C. Histochemistry through the years, browsing a long-established journal: novelties in traditional subjects. Eur J Histochem 2010; 54:e51. [PMID: 21263750 PMCID: PMC3167322 DOI: 10.4081/ejh.2010.e51] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2010] [Accepted: 12/10/2010] [Indexed: 12/14/2022] Open
Abstract
Histochemical journals represent a traditional forum where methodological and technological improvements can be presented and validated in view of their applications to investigate not only cytology and histology in normal and diseased conditions but to test as well hypotheses on more basic issues for life sciences, such as comparative and evolutionary biology. The earliest scientific journals on histochemistry began their publication in the first half of the ‘50s of the last century, and their readership did not probably change over the years; rather, the authors’ interests may have progressively been changing as well as the main topics of their articles. This hypothesis is discussed, based on the subjects of the article published in the first and last ten years in the European Journal of Histochemistry, as an example of old journal which started publication in 1954, being since then the official organ of the Italian Society of Histochemistry. This survey confirmed that histochemistry has provided and still offers unique opportunities for studying the structure, chemical composition and function of cells and tissues in a wide variety of living organisms, especially when the topological distribution of specific molecular components has diagnostic or predictive significance, as it occurs in human and veterinary biology and pathology. Some subjects (e.g. histochemistry applied to muscle cells or to mineralized tissues) have recently become rather popular, whereas a wider application of the histochemical approach may be envisaged for plant cells and tissues.
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Affiliation(s)
- C Pellicciari
- Dipartimento di Biologia Animale, University of Pavia, Italy.
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Xiao Y, Gao X. Use of IgY antibodies and semiconductor nanocrystal detection in cancer biomarker quantitation. Biomark Med 2010; 4:227-39. [PMID: 20406067 DOI: 10.2217/bmm.10.7] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Biomarkers play a pivotal role in the early detection and diagnosis of cancer. Accurate quantitation of certain biomarkers is crucial to reach correct treatment decisions. In practice, immunohistochemistry (IHC) remains the most important diagnostic technique to evaluate protein biomarker expression in tissue biopsies. However, IHC has largely been qualitative. Low specificity of the mammalian IgG antibodies used to capture the analytes and instability of fluorescence from the organic dyes used as the detecting agents are among the major factors that have impeded the development of quantitative IHC. Avian IgY antibodies have many attractive biochemical, immunological and production advantages over IgGs and are, therefore, better substitutes in diagnostic applications. Using IgY in immunoassays can potentially eliminate false positives and often results in low background and interference. Quantum dots (QDs) have recently emerged as a novel class of fluorophores, promising for many biomedical imaging applications. Fluorescence from QDs is significantly brighter and more photostable than organic dyes. In addition, QDs offer the capacity of multiplexed detection of several biomarkers simultaneously. Combining the high sensitivity and specificity of IgY antibodies and the high brightness and photostability of QDs in IHC has been demonstrated to improve biomarker detection and quantitation.
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Affiliation(s)
- Yan Xiao
- DNA Science Group, Biochemical Science Division, Chemical Science & Technology Laboratory, National Institute of Standards & Technology, Gaithersburg, MD 20899, USA.
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Korf U, Löbke C, Sahin O, Haller F, Sültmann H, Arlt D, Poustka A. Reverse-phase protein arrays for application-orientated cancer research. Proteomics Clin Appl 2009; 3:1140-50. [PMID: 21136941 DOI: 10.1002/prca.200780035] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2007] [Revised: 05/04/2009] [Accepted: 06/10/2009] [Indexed: 01/26/2023]
Abstract
A detailed and quantitative analysis of disease-relevant signaling will greatly contribute to our understanding of tumorigenesis and cancer progression, and thus open new strategies for drug discovery. However, throughput and sensitivity of currently established methods available for proteome profiling do not comply with the needs of clinical research such as high sample capacity and low sample consumption. Protein microarrays emerged as a promising alternative to analyze the abundance of proteins and their phosphorylation status on a high-throughput level. Here we summarize recent methodological advancements in the field of reverse-phase protein arrays and demonstrate their potential for clinical research as well as for in vitro applications.
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Affiliation(s)
- Ulrike Korf
- Division of Molecular Genome Analysis, German Cancer Research Center, Heidelberg, Germany.
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Zecchini V, Mills IG. Putting chromatin immunoprecipitation into context. J Cell Biochem 2009; 107:19-29. [DOI: 10.1002/jcb.22080] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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