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Immunohistochemical Analysis of Expression, Phosphorylation, and Nuclear Translocation of NF-κB Proteins in Human Tissues. Methods Mol Biol 2021. [PMID: 34236631 DOI: 10.1007/978-1-0716-1669-7_3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
Abstract
Immunohistochemistry (IHC) is a technique aimed at detecting specific antigens on tissue sections by the use of targeting reagents labeled with reporter molecules. This technique allows a snapshot of the structure of tissue and determines the cellular and subcellular localization of a target antigen. This chapter describes how to identify and localize NF-κB proteins in human tissue using immunohistochemical staining on formalin-fixed paraffin-embedded and frozen tissue.
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2
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Sharma S, Dey P. Automated Immunostaining Platform in Cytology. J Cytol 2021; 38:57-63. [PMID: 34321770 PMCID: PMC8280864 DOI: 10.4103/joc.joc_145_20] [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: 08/20/2020] [Revised: 10/24/2020] [Accepted: 04/06/2021] [Indexed: 11/04/2022] Open
Abstract
Background: In the modern era, immunocytochemistry (ICC) is an essential part of investigations. There is now an increasing workload of ICC in laboratories. Automated immunostaining platform may help the laboratories to deal with such a rising burden of ICC. Summary: In this brief review article, we have described the various aspects of automated ICC, particularly the benefits, limitations, types of the system, working manner, and comparison of different commercially available systems.
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Affiliation(s)
- Shelly Sharma
- Department of Cytology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Pranab Dey
- Department of Cytology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
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3
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Huerta-Yepez S, Tirado-Rodriguez A, Montecillo-Aguado MR, Yang J, Hammock BD, Hankinson O. Aryl Hydrocarbon Receptor-Dependent inductions of omega-3 and omega-6 polyunsaturated fatty acid metabolism act inversely on tumor progression. Sci Rep 2020; 10:7843. [PMID: 32398692 PMCID: PMC7217871 DOI: 10.1038/s41598-020-64146-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Accepted: 04/13/2020] [Indexed: 12/21/2022] Open
Abstract
The Western diet contains a high ratio of omega-6 (ω6) to omega-3 (ω3) polyunsaturated fatty acids (PUFA). The prototypical aryl hydrocarbon receptor (AHR) ligand, 2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD), induces CYP1 family enzymes, which can metabolize PUFA to epoxides. Mice fed ω3-rich or ω6-rich diets were treated with TCDD and injected subcutaneously with AHR-competent Hepa1-GFP hepatoma cells or AHR-deficient LLC lung cancer cells. TCDD reduced the growth rates of the resulting tumors in ω3-fed mice and inhibited their metastasis to the liver and/or lung, but had the opposite effects in mice fed ω6 PUFA. These responses were likely attributable to the corresponding PUFA epoxides generated in tumor cells and/or host, since many depended upon co-administration of a soluble epoxide hydrolase (EPHX2) inhibitor in males, and/or were associated with increases in epoxide levels in tumors and sites of metastasis. Equivalent effects occurred in females in the absence of EPHX2 inhibition, probably because this sex expressed reduced levels of EPHX2. The responses elicited by TCDD were associated with effects on tumor vascularity, tumor cell proliferation and/or apoptosis. Thus environmental AHR agonists, and potentially also endogenous, nutritional, and microbiome-derived agonists, may reduce or enhance cancer progression depending on the composition of dietary PUFA, particularly in females.
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Affiliation(s)
- Sara Huerta-Yepez
- Department of Pathology & Laboratory Medicine, University of California, Los Angeles, CA, 90095, USA
| | - Ana Tirado-Rodriguez
- Department of Pathology & Laboratory Medicine, University of California, Los Angeles, CA, 90095, USA
| | - Mayra R Montecillo-Aguado
- Research Unit of Oncology Diseases. Hospital Infantil de Mexico, Federico Gomez, Mexico City, Mexico
| | - Jun Yang
- Department of Entomology and Comprehensive Cancer Center, University of California, Davis, CA, 95616, USA
| | - Bruce D Hammock
- Department of Entomology and Comprehensive Cancer Center, University of California, Davis, CA, 95616, USA
| | - Oliver Hankinson
- Department of Pathology & Laboratory Medicine, University of California, Los Angeles, CA, 90095, USA.
- Molecular Toxicology Interdepartmental Program and Department of Environmental Health Sciences, University of California, Los Angeles, CA, 90095, USA.
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4
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Vega MI, Shi Y, Frost P, Huerta-Yepez S, Antonio-Andres G, Hernandez-Pando R, Lee J, Jung ME, Gera JF, Lichtenstein A. A Novel Therapeutic Induces DEPTOR Degradation in Multiple Myeloma Cells with Resulting Tumor Cytotoxicity. Mol Cancer Ther 2019; 18:1822-1831. [PMID: 31395691 DOI: 10.1158/1535-7163.mct-19-0115] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 06/19/2019] [Accepted: 07/30/2019] [Indexed: 11/16/2022]
Abstract
Prior work indicates DEPTOR expression in multiple myeloma cells could be a therapeutic target. DEPTOR binds to mTOR via its PDZ domain and inhibits mTOR kinase activity. We previously identified a drug, which prevented mTOR-DEPTOR binding (NSC126405) and induced multiple myeloma cytotoxicity. We now report on a related therapeutic, drug 3g, which induces proteasomal degradation of DEPTOR. DEPTOR degradation followed drug 3g binding to its PDZ domain and was not due to caspase activation or enhanced mTOR phosphorylation of DEPTOR. Drug 3g enhanced mTOR activity, and engaged the IRS-1/PI3K/AKT feedback loop with reduced phosphorylation of AKT on T308. Activation of TORC1, in part, mediated multiple myeloma cytotoxicity. Drug 3g was more effective than NSC126405 in preventing binding of recombinant DEPTOR to mTOR, preventing binding of DEPTOR to mTOR inside multiple myeloma cells, in activating mTOR and inducing apoptosis in multiple myeloma cells. In vivo, drug 3g injected daily abrogated DEPTOR expression in xenograft tumors and induced an antitumor effect although modest weight loss was seen. Every-other-day treatment, however, was equally effective without weight loss. Drug 3g also reduced DEPTOR expression in normal tissues. Although no potential toxicity was identified in hematopoietic or hepatic function, moderate cardiac enlargement and glomerular mesangial hypertrophy was seen. DEPTOR protected multiple myeloma cells against bortezomib suggesting anti-DEPTOR drugs could synergize with proteasome inhibitors (PI). Indeed, combinations of drug NSC126405 + bortezomib were synergistic. In contrast, drug 3g was not and was even antagonistic. This antagonism was probably due to prevention of proteasomal DEPTOR degradation.
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Affiliation(s)
- Mario I Vega
- Hematology-Oncology, VA West LA-UCLA Medical Center, Los Angeles, California
| | - Yijiang Shi
- Hematology-Oncology, VA West LA-UCLA Medical Center, Los Angeles, California
| | - Patrick Frost
- Hematology-Oncology, VA West LA-UCLA Medical Center, Los Angeles, California
| | - Sara Huerta-Yepez
- Hospital Infantil de Mexico Federico Gomez, Mexico City, Mexico.,Pathology & Laboratory Medicine, UCLA Medical School, Los Angeles, California
| | - Gabriela Antonio-Andres
- Hospital Infantil de Mexico Federico Gomez, Mexico City, Mexico.,Pathology & Laboratory Medicine, UCLA Medical School, Los Angeles, California
| | | | | | - Michael E Jung
- Department of Chemistry & Biochemistry, University of California, Los Angeles, California.,Jonsson Cancer Center, University of California, Los Angeles, California
| | - Joseph F Gera
- Hematology-Oncology, VA West LA-UCLA Medical Center, Los Angeles, California.,Jonsson Cancer Center, University of California, Los Angeles, California
| | - Alan Lichtenstein
- Hematology-Oncology, VA West LA-UCLA Medical Center, Los Angeles, California. .,Jonsson Cancer Center, University of California, Los Angeles, California
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5
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Zapata-Tarres M, Juarez-Villegas LE, Maldonado-Valenzuela A, Baay-Guzman GJ, Lopez-Perez TV, Cabrera-Muñoz L, Sadowinski-Pine S, Huerta-Yepez S. Expression of YY1 in Wilms tumors with favorable histology is a risk factor for adverse outcomes. Future Oncol 2019; 15:1231-1241. [DOI: 10.2217/fon-2018-0764] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Aim: To investigate the role of the transcription factor YY1 in Wilms tumor (WT). Patients & methods: We measured YY1 expression using tissue microarray from patients with pediatric renal tumors, mainly WT and evaluated correlations with the predicted clinical evolution. YY1 expression was measured using immunohistochemical and protein expression was determined by digital pathology. Results & conclusion: YY1 significantly increased in WT patients. In addition, an increase in YY1 expression had a greater risk of adverse outcomes in WT patients with favorable histology. YY1 expression was higher in the blastemal component of tumors, and high nuclear expression positively correlated with metastasis. YY1 may be considered as a metastasis risk factor in WT.
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Affiliation(s)
| | - Luis E Juarez-Villegas
- Departamento de Hemato-Oncología, Hospital Infantil de México, Federico Gómez, Mexico City, Mexico
| | | | - Guillermina J Baay-Guzman
- Unidad de Investigación en Enfermedades Oncológicas, Hospital Infantil de México, Federico Gómez, Mexico City, Mexico
| | - Tania V Lopez-Perez
- Unidad de Investigación en Enfermedades Oncológicas, Hospital Infantil de México, Federico Gómez, Mexico City, Mexico
| | - Lourdes Cabrera-Muñoz
- Departamento de Patología, Hospital Infantil de México, Federico Gómez, Mexico City, Mexico
| | | | - Sara Huerta-Yepez
- Unidad de Investigación en Enfermedades Oncológicas, Hospital Infantil de México, Federico Gómez, Mexico City, Mexico
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6
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Morales-Martinez M, Valencia-Hipolito A, Vega GG, Neri N, Nambo MJ, Alvarado I, Cuadra I, Duran-Padilla MA, Martinez-Maza O, Huerta-Yepez S, Vega MI. Regulation of Krüppel-Like Factor 4 (KLF4) expression through the transcription factor Yin-Yang 1 (YY1) in non-Hodgkin B-cell lymphoma. Oncotarget 2019; 10:2173-2188. [PMID: 31040909 PMCID: PMC6481341 DOI: 10.18632/oncotarget.26745] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Accepted: 02/15/2019] [Indexed: 12/21/2022] Open
Abstract
Krüppel-Like Factor 4 (KLF4) is a member of the KLF transcription factor family, and evidence suggests that KLF4 is either an oncogene or a tumor suppressor. The regulatory mechanism underlying KLF4 expression in cancer, and specifically in lymphoma, is still not understood. Bioinformatics analysis revealed two YY1 putative binding sites in the KLF4 promoter region (-950 bp and -105 bp). Here, the potential regulation of KLF4 by YY1 in NHL was analyzed. Mutation of the putative YY1 binding sites in a previously reported system containing the KLF4 promoter region and CHIP analysis confirmed that these binding sites are important for KLF4 regulation. B-NHL cell lines showed that both KLF4 and YY1 are co-expressed, and transfection with siRNA-YY1 resulted in significant inhibition of KLF4. The clinical implications of YY1 in the transcriptional regulation of KLF4 were investigated by IHC in a TMA with 43 samples of subtypes DLBCL and FL, and all tumor tissues expressing YY1 demonstrated a correlation with KLF4 expression, which was consistent with bioinformatics analyses in several databases. Our findings demonstrated that KLF4 can be transcriptionally regulated by YY1 in B-NHL, and a correlation between YY1 expression and KLF4 was found in clinical samples. Hence, both YY1 and KLF4 may be possible therapeutic biomarkers of NHL.
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Affiliation(s)
- Mario Morales-Martinez
- Molecular Signal Pathway in Cancer Laboratory, UIMEO, Oncology Hospital, Siglo XXI National Medical Center, IMSS, México City, México.,Unidad de Posgrado, Facultad de Medicina Universidad Nacional Autónoma de México, México City, México
| | - Alberto Valencia-Hipolito
- Molecular Signal Pathway in Cancer Laboratory, UIMEO, Oncology Hospital, Siglo XXI National Medical Center, IMSS, México City, México
| | - Gabriel G Vega
- Molecular Signal Pathway in Cancer Laboratory, UIMEO, Oncology Hospital, Siglo XXI National Medical Center, IMSS, México City, México.,Unidad de Posgrado, Facultad de Medicina Universidad Nacional Autónoma de México, México City, México
| | - Natividad Neri
- Department of Hematology, Oncology Hospital, National Medical Center, IMSS, México City, México
| | - Maria J Nambo
- Department of Hematology, Oncology Hospital, National Medical Center, IMSS, México City, México
| | - Isabel Alvarado
- Servicio de Anatomía Patológica, Hospital de Oncología, Centro Médico Nacional Siglo XXI, IMSS, México City, México
| | - Ivonne Cuadra
- Servicio de Anatomía Patológica, Hospital de Oncología, Centro Médico Nacional Siglo XXI, IMSS, México City, México
| | - Marco A Duran-Padilla
- Servicio de Patología, Hospital General de México "Eduardo Liceaga", Facultad de Medicina de la UNAM, México City, México
| | - Otoniel Martinez-Maza
- Department of Obstetrics and Gynecology, Jonsson Comprehensive Cancer Center, UCLA AIDS Institute, David Geffen School of Medicine, University of California, Los Angeles, California, USA.,Department of Microbiology, Immunology, and Molecular Genetics, Jonsson Comprehensive Cancer Center, UCLA AIDS Institute, David Geffen School of Medicine, University of California, Los Angeles, California, USA
| | - Sara Huerta-Yepez
- Unidad de Investigación en Enfermedades Oncológicas, Hospital Infantil de México "Federico Gómez" S.S.A, México City, México
| | - Mario I Vega
- Molecular Signal Pathway in Cancer Laboratory, UIMEO, Oncology Hospital, Siglo XXI National Medical Center, IMSS, México City, México.,Department of Medicine, Hematology-Oncology Division, Greater Los Angeles VA Healthcare Center, UCLA Medical Center, Jonsson Comprehensive Cancer Center, Los Angeles, California, USA
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Hsieh AMY, Polyakova O, Fu G, Chazen RS, MacMillan C, Witterick IJ, Ralhan R, Walfish PG. Programmed death-ligand 1 expression by digital image analysis advances thyroid cancer diagnosis among encapsulated follicular lesions. Oncotarget 2018; 9:19767-19782. [PMID: 29731981 PMCID: PMC5929424 DOI: 10.18632/oncotarget.24833] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Accepted: 02/24/2018] [Indexed: 01/09/2023] Open
Abstract
Recognition of noninvasive follicular thyroid neoplasms with papillary-like nuclear features (NIFTP) that distinguishes them from invasive malignant encapsulated follicular variant of papillary thyroid carcinoma (EFVPTC) can prevent overtreatment of NIFTP patients. We and others have previously reported that programmed death-ligand 1 (PD-L1) is a useful biomarker in thyroid tumors; however, all reports to date have relied on manual scoring that is time consuming as well as subject to individual bias. Consequently, we developed a digital image analysis (DIA) protocol for cytoplasmic and membranous stain quantitation (ThyApp) and evaluated three tumor sampling methods [Systemic Uniform Random Sampling, hotspot nucleus, and hotspot nucleus/3,3'-Diaminobenzidine (DAB)]. A patient cohort of 153 cases consisting of 48 NIFTP, 44 EFVPTC, 26 benign nodules and 35 encapsulated follicular lesions/neoplasms with lymphocytic thyroiditis (LT) was studied. ThyApp quantitation of PD-L1 expression revealed a significant difference between invasive EFVPTC and NIFTP; but none between NIFTP and benign nodules. ThyApp integrated with hotspot nucleus tumor sampling method demonstrated to be most clinically relevant, consumed least processing time, and eliminated interobserver variance. In conclusion, the fully automatic DIA algorithm developed using a histomorphological approach objectively quantitated PD-L1 expression in encapsulated thyroid neoplasms and outperformed manual scoring in reproducibility and higher efficiency.
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Affiliation(s)
- Anne M-Y Hsieh
- Alex and Simona Shnaider Research Laboratory in Molecular Oncology, Sinai Health System, Toronto, ON, Canada
| | - Olena Polyakova
- Alex and Simona Shnaider Research Laboratory in Molecular Oncology, Sinai Health System, Toronto, ON, Canada
| | - Guodong Fu
- Alex and Simona Shnaider Research Laboratory in Molecular Oncology, Sinai Health System, Toronto, ON, Canada
| | - Ronald S Chazen
- Alex and Simona Shnaider Research Laboratory in Molecular Oncology, Sinai Health System, Toronto, ON, Canada
| | - Christina MacMillan
- Department of Pathology and Laboratory Medicine, Sinai Health System, Toronto, Ontario, Canada.,Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada
| | - Ian J Witterick
- Alex and Simona Shnaider Research Laboratory in Molecular Oncology, Sinai Health System, Toronto, ON, Canada.,Joseph and Mildred Sonshine Family Centre for Head and Neck Diseases, Sinai Health System, Toronto, Ontario, Canada.,Department of Otolaryngology-Head and Neck Surgery, Sinai Health System, Toronto, Ontario, Canada
| | - Ranju Ralhan
- Alex and Simona Shnaider Research Laboratory in Molecular Oncology, Sinai Health System, Toronto, ON, Canada.,Department of Pathology and Laboratory Medicine, Sinai Health System, Toronto, Ontario, Canada.,Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada.,Department of Otolaryngology-Head and Neck Surgery, Sinai Health System, Toronto, Ontario, Canada
| | - Paul G Walfish
- Alex and Simona Shnaider Research Laboratory in Molecular Oncology, Sinai Health System, Toronto, ON, Canada.,Joseph and Mildred Sonshine Family Centre for Head and Neck Diseases, Sinai Health System, Toronto, Ontario, Canada.,Department of Pathology and Laboratory Medicine, Sinai Health System, Toronto, Ontario, Canada.,Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada.,Department of Otolaryngology-Head and Neck Surgery, Sinai Health System, Toronto, Ontario, Canada.,Department of Medicine, Endocrine Division, Sinai Health System and University of Toronto Medical School, Toronto, Ontario, Canada
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Laurinavicius A, Plancoulaine B, Herlin P, Laurinaviciene A. Comprehensive Immunohistochemistry: Digital, Analytical and Integrated. Pathobiology 2016; 83:156-63. [PMID: 27101138 DOI: 10.1159/000442389] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Immunohistochemistry (IHC) is widely used in contemporary pathology as a diagnostic and, increasingly, as a prognostic and predictive tool. The main value of the method today comes from a sensitive and specific detection of a protein of interest in the context of tissue architecture and cell populations. One of the major limitations of conventional IHC is related to the fact that the results are usually obtained by visual qualitative or semiquantitative evaluation. While this is sufficient for diagnostic purposes, measurement of prognostic and predictive biomarkers requires better accuracy and reproducibility. Also, objective evaluation of the spatial heterogeneity of biomarker expression as well as the development of combined/integrated biomarkers are in great demand. On the other end of the scale, the rapid development of tissue proteomics accounting for 2D spatial aspects has led to a disruptive concept of next-generation IHC, promising high multiplexing and broad dynamic range quantitative/spatial data on tissue protein expression. This 'evolutionary gap' between conventional and next-generation IHC can be filled by comprehensive IHC based on digital technologies (empowered by quantification and spatial and multiparametric analytics) and integrated into the pathology workflow and information systems. In this paper, we share our perspectives on a comprehensive IHC road map as a multistep development process.
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Rational design and validation of an anti-protein kinase C active-state specific antibody based on conformational changes. Sci Rep 2016; 6:22114. [PMID: 26911897 PMCID: PMC4766434 DOI: 10.1038/srep22114] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Accepted: 02/08/2016] [Indexed: 12/15/2022] Open
Abstract
Protein kinase C (PKC) plays a regulatory role in key pathways in cancer. However, since phosphorylation is a step for classical PKC (cPKC) maturation and does not correlate with activation, there is a lack of tools to detect active PKC in tissue samples. Here, a structure-based rational approach was used to select a peptide to generate an antibody that distinguishes active from inactive cPKC. A peptide conserved in all cPKCs, C2Cat, was chosen since modeling studies based on a crystal structure of PKCβ showed that it is localized at the interface between the C2 and catalytic domains of cPKCs in an inactive kinase. Anti-C2Cat recognizes active cPKCs at least two-fold better than inactive kinase in ELISA and immunoprecipitation assays, and detects the temporal dynamics of cPKC activation upon receptor or phorbol stimulation. Furthermore, the antibody is able to detect active PKC in human tissue. Higher levels of active cPKC were observed in the more aggressive triple negative breast cancer tumors as compared to the less aggressive estrogen receptor positive tumors. Thus, this antibody represents a reliable, hitherto unavailable and a valuable tool to study PKC activation in cells and tissues. Similar structure-based rational design strategies can be broadly applied to obtain active-state specific antibodies for other signal transduction molecules.
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