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Juarez P, Martínez-Cerdeño V. Triple enzymatic immunochemistry for interneuron populations in postmortem human cerebral cortex. Heliyon 2023; 9:e20626. [PMID: 37867800 PMCID: PMC10589777 DOI: 10.1016/j.heliyon.2023.e20626] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 08/31/2023] [Accepted: 10/02/2023] [Indexed: 10/24/2023] Open
Abstract
Immunostaining is an antibody-based tool used to visualize proteins in tissue. Enzymes or fluorochromes conjugated to antibodies are used to detect proteins of interests. Fluorescent immunostaining can be used in human tissue, however due to the high autofluorescence of non-perfused human tissue, enzymatic immunostaining is better suited. Enzymes produce a colored product that is detectable by light microscopes. Here we describe a successful triple immunochemistry protocol to enzymatically label three distinct populations of interneurons (Parvalbumin+, Calbindin+, and Calretinin + interneurons) in non-perfused formalin fixed human brain cerebral cortex. Signal was achieved using a combination of horseradish peroxidase (HRP) and Alkaline Phosphatase (AP) enzymes and color was generated using the insoluble chromogens: 3,3'- Diaminobenzidine (DAB, Brown), Vector Blue (Blue), and Vector VIP (Pink). There were no noticeable background and minimal signal overlap between the different colors. We were able to successfully stain human cortical tissue and distinguish morphological properties of the three interneuron (IN) populations.
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Affiliation(s)
- Pablo Juarez
- Institute for Pediatric Regenerative Medicine (IPRM), Shriner's Hospital for Children and UC Davis School of Medicine, Sacramento, CA, USA
- Department of Pathology & Laboratory Medicine, UC Davis School of Medicine, Sacramento, CA, USA
| | - Verónica Martínez-Cerdeño
- Institute for Pediatric Regenerative Medicine (IPRM), Shriner's Hospital for Children and UC Davis School of Medicine, Sacramento, CA, USA
- Department of Pathology & Laboratory Medicine, UC Davis School of Medicine, Sacramento, CA, USA
- MIND Institute, UC Davis School of Medicine, Sacramento, CA, USA
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2
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Lonardi S, Bugatti M, Valzelli A, Facchetti F. Immunohistochemical Detection of SARS-CoV-2 Antigens by Single and Multiple Immunohistochemistry. Methods Mol Biol 2022; 2452:291-303. [PMID: 35554913 DOI: 10.1007/978-1-0716-2111-0_17] [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: 06/15/2023]
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection can be demonstrated in tissue sections by immunohistochemistry (IHC), which has the power to localize in bright field specific antigens in cells and tissues. The use of double or triple immunostains is capable of highlighting which cells are infected and/or the relationship of infected cell with other cells and tissue structures. In addition, immunoenzymatic multi-staining permits the simultaneous identification, localization, and enumeration of different cellular epitopes. Moreover, this method improves analytical precision, decreasing the time required for morphometric quantification, maximizing the information obtained from a single slide of paraffin-embedded tissue.
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Affiliation(s)
- Silvia Lonardi
- Section of Pathology, Department of Molecular and Translational Medicine, University of Brescia, Spedali Civili di Brescia, Brescia, Italy
| | - Mattia Bugatti
- Section of Pathology, Department of Molecular and Translational Medicine, University of Brescia, Spedali Civili di Brescia, Brescia, Italy.
| | - Arianna Valzelli
- Section of Pathology, Department of Molecular and Translational Medicine, University of Brescia, Spedali Civili di Brescia, Brescia, Italy
| | - Fabio Facchetti
- Section of Pathology, Department of Molecular and Translational Medicine, University of Brescia, Spedali Civili di Brescia, Brescia, Italy.
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3
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Multiple Immunostainings with Different Epitope Retrievals—The FOLGAS Protocol. Int J Mol Sci 2021; 23:ijms23010223. [PMID: 35008649 PMCID: PMC8745613 DOI: 10.3390/ijms23010223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 12/22/2021] [Accepted: 12/24/2021] [Indexed: 11/16/2022] Open
Abstract
We describe a sequential multistaining protocol for immunohistochemistry, immunofluorescence and CyTOF imaging for formalin-fixed, paraffin-embedded specimens (FFPE) in the formalin gas-phase (FOLGAS), enabling sequential multistaining, independent from the primary and secondary antibodies and retrieval. Histomorphologic details are preserved, and crossreactivity and loss of signal intensity are not detectable. Combined with a DAB-based hydrophobic masking of metal-labeled primary antibodies, FOLGAS allows the extended use of CyTOF imaging in FFPE sections.
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Norimatsu Y, Nishikawa T, Suzuki H, Hosokawa S, Yano H, Maeda Y, Kurokawa T, Shinagawa A, Kobayashi TK, Fulciniti F. The expression pattern of CD10 and CD31 identifies fine fibrovascular stroma of grade 1-endometrial endometrioid carcinomas in cytology. Cytopathology 2021; 33:362-373. [PMID: 34689374 DOI: 10.1111/cyt.13070] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 10/05/2021] [Accepted: 10/18/2021] [Indexed: 12/30/2022]
Abstract
INTRODUCTION The objective of this study was to assess the diagnostic utility of CD10 in the differential diagnosis of grade 1-endometrial endometrioid carcinoma (G1-EEC) and the metaplastic changes associated with the endometrial glandular and stromal breakdown (EGBD) on liquid-based cytological (LBC) samples. METHODS (1) The type and distribution of CD10-positive cells in EGBD and G1-EEC patients were evaluated. (2) Based on the results from (1), histological and cytological specimens were double-immunostained with CD31 and CD10 to confirm whether CD10-positive tubular-canalicular material found in (1) was represented by fine threads of endometrial-type fibrovascular stroma. (3) Based on the results from (2), additional immunostaining of histological specimens was performed for CD146 and αSMA as markers of perivascular cells. RESULTS (1) CD10 positive cells showed two main patterns of expression: cytoplasmic immunoreactivity in the form of dense brown granules in EGBD and tubular-canalicular branching patterns in G1-EEC. (2) The tubular-canalicular material observed in cytological specimens of G1-EEC samples co-expressed CD10 and CD31, and was interpreted as representing fine threads of endometrial fibrovascular stroma in the corresponding histological samples. Conversely, metaplastic changes in EGBD cases, only a few CD31-positive signals were found inside the condensed stromal clusters with CD10-positive. (3) Cells surrounding the CD31-positive vascular endothelial cells expressed CD146 and αSMA; moreover, some of the thin CD10-positive fibrous stromal strands also co-expressed αSMA. CONCLUSIONS CD10 is a very useful immunomarker for distinguishing between G1-EEC and the metaplastic changes of EGBD in LBC samples.
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Affiliation(s)
- Yoshiaki Norimatsu
- Departments of Medical Technology, Faculty of Health Sciences, Ehime Prefectural University of Health Sciences, Ehime, Japan
| | - Takeshi Nishikawa
- Department of Pathology, Nara Medical University Hospital, Nara, Japan
| | - Hisae Suzuki
- Department of Pathology, Nara Medical University Hospital, Nara, Japan
| | - Sho Hosokawa
- Departments of Medical Technology, Faculty of Health Sciences, Ehime Prefectural University of Health Sciences, Ehime, Japan
| | - Hiroko Yano
- Departments of Medical Technology, Faculty of Health Sciences, Ehime Prefectural University of Health Sciences, Ehime, Japan
| | - Yoshinobu Maeda
- Department of Diagnostic Pathology, Toyama Red Cross Hospital, Toyama, Japan
| | - Tetsuji Kurokawa
- Department of Gynecology and Obstetrics, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Akiko Shinagawa
- Department of Gynecology and Obstetrics, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Tadao K Kobayashi
- Cancer Education and Research Center, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Franco Fulciniti
- Clinical Cytopathology Service, Istituto Cantonale di Patologia, Locarno, Switzerland
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Gaafar NM, Osman TAH, Ahmed IA, Elsheikh M, Dongre H, Jacobsen MR, Mohamed NG, Fromreide S, Suleiman AM, Johannessen AC, Nginamau ES, Costea DE. Characterization of immune cell infiltrate in tumor stroma and epithelial compartments in oral squamous cell carcinomas of Sudanese patients. Clin Exp Dent Res 2021; 8:130-140. [PMID: 34626165 PMCID: PMC8874073 DOI: 10.1002/cre2.501] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Revised: 09/03/2021] [Accepted: 09/09/2021] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Tumor immune infiltrate has been explored in oral squamous cell carcinoma (OSCC), but studies on simultaneous characterization of multiple immune cell subtypes separately in stromal and intraepithelial tumor compartments are limited. OBJECTIVES We aimed to investigate the immune cell infiltrate in OSCC by using immunohistochemistry (IHC) for a panel of inflammatory cells in stromal and epithelial tumor compartments for a better characterization of the tumors. METHODS Thirty-six OSCC lesions and nine normal oral mucosa (NOM) samples from patients attending Khartoum Dental Teaching Hospital, Sudan were investigated for presence of tumor infiltrating lymphocytes, tumor-associated macrophages, tumor-associated neutrophils, and PD-L1 positive cells in the inflammatory infiltrate by single and double IHC. Digital quantitative analysis (Aperio Technologies Inc.) was performed separately for stromal and epithelial compartments. RESULTS OSCC cases displayed a higher inflammatory infiltrate in the associated stroma, but not in the epithelial compartment when compared to NOM. The immunosuppressive type of inflammatory infiltrate, that is, T regulatory cells (FoxP3+ cells) was identified to be significantly higher in the epithelial compartment of tumors with advanced clinical state. An immunoscore developed by combining intraepithelial FoxP3+ and CD4+ cells was found significantly higher in lesions from elderly patients, localized at toombak dipping-related sites, poorly differentiated OSCCs, or with loco-regional lymph node spreading. CONCLUSIONS Despite heavy immune cell infiltration in tumor-associated stroma, the majority of OSCCs in this cohort displayed a low intraepithelial immune infiltration. An immunoscore based on combined CD4 and FoxP3 intraepithelial expression may serve as an indicator of advanced tumor progression and should be further investigated for its use as potential prognostic biomarker in OSCC.
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Affiliation(s)
- Nuha Mohamed Gaafar
- The Gade Laboratory for Pathology, and Centre for Cancer Biomarkers (CCBIO), Department of Clinical Medicine, Faculty of Medicine, University of Bergen, Bergen, Norway.,Centre for International Health, Department of Global Public Health and Primary Care, Faculty of Medicine, University of Bergen, Bergen, Norway
| | - Tarig Al-Hadi Osman
- The Gade Laboratory for Pathology, and Centre for Cancer Biomarkers (CCBIO), Department of Clinical Medicine, Faculty of Medicine, University of Bergen, Bergen, Norway.,Institute of Clinical Dentistry, Faculty of Medicine, University of Bergen, Bergen, Norway
| | - Israa Abdulrahman Ahmed
- The Gade Laboratory for Pathology, and Centre for Cancer Biomarkers (CCBIO), Department of Clinical Medicine, Faculty of Medicine, University of Bergen, Bergen, Norway.,Department of Operative Dentistry, University of Science & Technology, Omdurman, Sudan
| | - Mariam Elsheikh
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, University of Khartoum, Khartoum, Sudan.,Khartoum Dental Teaching Hospital, Khartoum, Sudan
| | - Harsh Dongre
- The Gade Laboratory for Pathology, and Centre for Cancer Biomarkers (CCBIO), Department of Clinical Medicine, Faculty of Medicine, University of Bergen, Bergen, Norway.,Department of Pathology, Haukeland University Hospital, Bergen, Norway
| | - Martha Rolland Jacobsen
- The Gade Laboratory for Pathology, and Centre for Cancer Biomarkers (CCBIO), Department of Clinical Medicine, Faculty of Medicine, University of Bergen, Bergen, Norway
| | - Nazar Gafar Mohamed
- The Gade Laboratory for Pathology, and Centre for Cancer Biomarkers (CCBIO), Department of Clinical Medicine, Faculty of Medicine, University of Bergen, Bergen, Norway.,Centre for International Health, Department of Global Public Health and Primary Care, Faculty of Medicine, University of Bergen, Bergen, Norway.,Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, University of Khartoum, Khartoum, Sudan
| | - Siren Fromreide
- The Gade Laboratory for Pathology, and Centre for Cancer Biomarkers (CCBIO), Department of Clinical Medicine, Faculty of Medicine, University of Bergen, Bergen, Norway
| | - Ahmed Mohamed Suleiman
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, University of Khartoum, Khartoum, Sudan.,Khartoum Dental Teaching Hospital, Khartoum, Sudan
| | - Anne Christine Johannessen
- The Gade Laboratory for Pathology, and Centre for Cancer Biomarkers (CCBIO), Department of Clinical Medicine, Faculty of Medicine, University of Bergen, Bergen, Norway.,Department of Pathology, Haukeland University Hospital, Bergen, Norway
| | - Elisabeth Sivy Nginamau
- The Gade Laboratory for Pathology, and Centre for Cancer Biomarkers (CCBIO), Department of Clinical Medicine, Faculty of Medicine, University of Bergen, Bergen, Norway.,Department of Pathology, Haukeland University Hospital, Bergen, Norway
| | - Daniela Elena Costea
- The Gade Laboratory for Pathology, and Centre for Cancer Biomarkers (CCBIO), Department of Clinical Medicine, Faculty of Medicine, University of Bergen, Bergen, Norway.,Department of Pathology, Haukeland University Hospital, Bergen, Norway
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Slomianka L. Basic quantitative morphological methods applied to the central nervous system. J Comp Neurol 2021; 529:694-756. [PMID: 32639600 PMCID: PMC7818269 DOI: 10.1002/cne.24976] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 06/15/2020] [Accepted: 06/16/2020] [Indexed: 12/19/2022]
Abstract
Generating numbers has become an almost inevitable task associated with studies of the morphology of the nervous system. Numbers serve a desire for clarity and objectivity in the presentation of results and are a prerequisite for the statistical evaluation of experimental outcomes. Clarity, objectivity, and statistics make demands on the quality of the numbers that are not met by many methods. This review provides a refresher of problems associated with generating numbers that describe the nervous system in terms of the volumes, surfaces, lengths, and numbers of its components. An important aim is to provide comprehensible descriptions of the methods that address these problems. Collectively known as design-based stereology, these methods share two features critical to their application. First, they are firmly based in mathematics and its proofs. Second and critically underemphasized, an understanding of their mathematical background is not necessary for their informed and productive application. Understanding and applying estimators of volume, surface, length or number does not require more of an organizational mastermind than an immunohistochemical protocol. And when it comes to calculations, square roots are the gravest challenges to overcome. Sampling strategies that are combined with stereological probes are efficient and allow a rational assessment if the numbers that have been generated are "good enough." Much may be unfamiliar, but very little is difficult. These methods can no longer be scapegoats for discrepant results but faithfully produce numbers on the material that is assessed. They also faithfully reflect problems that associated with the histological material and the anatomically informed decisions needed to generate numbers that are not only valid in theory. It is within reach to generate practically useful numbers that must integrate with qualitative knowledge to understand the function of neural systems.
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Affiliation(s)
- Lutz Slomianka
- University of Zürich, Institute of AnatomyZürichSwitzerland
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7
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Nazaroff CD, LeSuer WE, Masuda MY, Pyon G, Lacy P, Jacobsen EA. Assessment of Lung Eosinophils In Situ Using Immunohistological Staining. Methods Mol Biol 2021; 2223:237-266. [PMID: 33226599 PMCID: PMC7869952 DOI: 10.1007/978-1-0716-1001-5_17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Eosinophils are rare white blood cells that are recruited from circulation to accumulate in the lung in mouse models of allergic respiratory inflammation. In hematoxylin-eosin (HE) stained lungs, eosinophils may be difficult to detect despite their bright eosin staining in the secondary granules. For this reason, antibody-mediated detection of eosinophils is preferable for specific and clearer identification of these cells. Moreover, eosinophils may degranulate, releasing their granule proteins into surrounding tissue, and remnants of cytolysed cells cannot be detected by HE staining. The methods here demonstrate the use of eosinophil-specific anti-mouse antibodies to detect eosinophil granule proteins in formalin-fixed cells both in situ in paraffin-embedded lungs, as well as in cytospin preparations from the lung. These antibody staining techniques enable either colorimetric or fluorescence imaging of eosinophils or their granule proteins with the potential for additional antibodies to be added for detection of multiple molecules.
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Affiliation(s)
- Christopher D Nazaroff
- Division of Allergy, Asthma, and Clinical Immunology, Department of Medicine, Mayo Clinic Arizona, Scottsdale, AZ, USA
- Biodesign Institute, School of Molecular Sciences, Arizona State University, Tempe, AZ, USA
| | - William E LeSuer
- Division of Allergy, Asthma, and Clinical Immunology, Department of Medicine, Mayo Clinic Arizona, Scottsdale, AZ, USA
| | - Mia Y Masuda
- Division of Allergy, Asthma, and Clinical Immunology, Department of Medicine, Mayo Clinic Arizona, Scottsdale, AZ, USA
| | - Grace Pyon
- Division of Allergy, Asthma, and Clinical Immunology, Department of Medicine, Mayo Clinic Arizona, Scottsdale, AZ, USA
| | - Paige Lacy
- Alberta Respiratory Centre (ARC) Research, Department of Medicine, University of Alberta, Edmonton, AB, Canada
| | - Elizabeth A Jacobsen
- Division of Allergy, Asthma, and Clinical Immunology, Department of Medicine, Mayo Clinic Arizona, Scottsdale, AZ, USA.
- Department of Immunology, Mayo Clinic Arizona, Scottsdale, AZ, USA.
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Landolt L, Furriol J, Babickova J, Ahmed L, Eikrem Ø, Skogstrand T, Scherer A, Suliman S, Leh S, Lorens JB, Gausdal G, Marti H, Osman T. AXL targeting reduces fibrosis development in experimental unilateral ureteral obstruction. Physiol Rep 2019; 7:e14091. [PMID: 31134766 PMCID: PMC6536582 DOI: 10.14814/phy2.14091] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 04/16/2019] [Accepted: 04/17/2019] [Indexed: 12/18/2022] Open
Abstract
The AXL receptor tyrosine kinase (RTK) is involved in partial epithelial-to-mesenchymal transition (EMT) and inflammation - both main promoters of renal fibrosis development. The study aim was to investigate the role of AXL inhibition in kidney fibrosis due to unilateral ureteral obstruction (UUO). Eight weeks old male C57BL/6 mice underwent UUO and were treated with oral AXL inhibitor bemcentinib (n = 22), Angiotensin-converting enzyme inhibitor (ACEI, n = 10), ACEI and bemcentinib (n = 10) or vehicle alone (n = 22). Mice were sacrificed after 7 or 15 days and kidney tissues were analyzed by immunohistochemistry (IHC), western blot, ELISA, Sirius Red (SR) staining, and hydroxyproline (Hyp) quantification. RNA was extracted from frozen kidney tissues and sequenced on an Illumina HiSeq4000 platform. After 15 days the ligated bemcentinib-treated kidneys showed less fibrosis compared to the ligated vehicle-treated kidneys in SR analyses and Hyp quantification. Reduced IHC staining for Vimentin (VIM) and alpha smooth muscle actin (αSMA), as well as reduced mRNA abundance of key regulators of fibrosis such as transforming growth factor (Tgfβ), matrix metalloproteinase 2 (Mmp2), Smad2, Smad4, myofibroblast activation (Aldh1a2, Crlf1), and EMT (Snai1,2, Twist), in ligated bemcentinib-treated kidneys was compatible with reduced (partial) EMT induction. Furthermore, less F4/80 positive cells, less activity of pathways related to the immune system and lower abundance of MCP1, MCP3, MCP5, and TARC in ligated bemcentinib-treated kidneys was compatible with reduction in inflammatory infiltrates by bemcentinib treatment. The AXL RTK pathway represents a promising target for pharmacologic therapy of kidney fibrosis.
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Affiliation(s)
- Lea Landolt
- Department of Clinical MedicineUniversity of BergenBergenNorway
| | - Jessica Furriol
- Department of MedicineHaukeland University HospitalBergenNorway
| | - Janka Babickova
- Department of Clinical MedicineUniversity of BergenBergenNorway
| | | | - Øystein Eikrem
- Department of Clinical MedicineUniversity of BergenBergenNorway
| | - Trude Skogstrand
- Department of MedicineHaukeland University HospitalBergenNorway
- Department of BiomedicineUniversity of BergenBergenNorway
| | - Andreas Scherer
- SpheromicsKontiolahtiFinland
- Institute for Molecular Medicine Finland FIMMHiLIFEUniversity of HelsinkiHelsinkiFinland
| | - Salwa Suliman
- Department of Clinical DentistryCenter for Clinical Dental ResearchUniversity of BergenBergenNorway
| | - Sabine Leh
- Department of Clinical MedicineUniversity of BergenBergenNorway
- Department of PathologyHaukeland University HospitalBergenNorway
| | - James B. Lorens
- Department of BiomedicineCenter for Cancer BiomarkersUniversity of BergenBergenNorway
| | | | - Hans‐Peter Marti
- Department of Clinical MedicineUniversity of BergenBergenNorway
- Department of MedicineHaukeland University HospitalBergenNorway
| | - Tarig Osman
- Department of Clinical MedicineUniversity of BergenBergenNorway
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Lu LC, Lee YH, Chang CJ, Shun CT, Fang CY, Shao YY, Liu TH, Cheng AL, Hsu CH. Increased Expression of Programmed Death-Ligand 1 in Infiltrating Immune Cells in Hepatocellular Carcinoma Tissues after Sorafenib Treatment. Liver Cancer 2019; 8:110-120. [PMID: 31019901 PMCID: PMC6465685 DOI: 10.1159/000489021] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2017] [Accepted: 04/06/2018] [Indexed: 02/04/2023] Open
Abstract
OBJECTIVE Programmed death-ligand 1 (PD-L1) expression in the tumor microenvironment (TME) has been reported to be related to prognosis in patients with hepatocellular carcinoma (HCC) after hepatectomy. The impact of sorafenib on PD-L1 expression in the TME of advanced HCC is unclear. PATIENTS AND METHODS Patients with HCC who received sorafenib for advanced disease at National Taiwan University Hospital, Taipei, Taiwan, and who had paired HCC tissues obtained before and after sorafenib treatment were included in the study group. HCC patients not treated with sorafenib who had paired primary and recurrent or metastatic tissues were identified as the reference group. The membrane PD-L1 staining, detected by immunohistochemistry (IHC) using SP142 antibody, was semiquantitatively scored in tumor cells (TCs) or tumor-infiltrating immune cells (ICs). Additional IHC assays were employed to characterize the PD-L1-expressing ICs. RESULTS Twenty-three advanced HCC patients with pre- and post-sorafenib paired HCC tissues were included in the study group. The median duration of sorafenib treatment was 4.3 months (range: 1.3-18.7). PD-L1 expression in ICs was significantly higher in post-sorafenib HCC tissues than in pre-sorafenib HCC tissues (pre-sorafenib vs. post-sorafenib IHC 0/1/2/3: 11/5/5/2 vs. 5/5/2/11, p = 0.016). However, PD-L1 expression in TCs was not significantly different between pre- and post-sorafenib tissues (IHC 0/1/2/3: 19/2/0/2 vs. 14/5/0/4, p = 0.094). In the reference group of 44 patients not treated with sorafenib, PD-L1 expression in ICs and TCs was not significantly different between the paired primary and metastatic HCC tissues. By performing IHC double staining with PD-L1 and CD68, we found the PD-L1-expressing ICs were mainly CD68-positive macrophages. PD-L1 expression levels of pre- and post-sorafenib tissues were not associated with patients' overall survival or duration of sorafenib treatment. CONCLUSIONS PD-L1 expression in ICs was significantly increased in post-sorafenib HCC tissues. The mechanisms and clinical significance of this observation warrants further investigation.
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Affiliation(s)
- Li-Chun Lu
- Graduate Institute of Oncology, National Taiwan University College of Medicine, Taipei, Taiwan,Department of Oncology, National Taiwan University Hospital, Taipei, Taiwan,National Taiwan University Cancer Center, Taipei, Taiwan
| | - Yi-Hsuan Lee
- Department of Pathology, National Taiwan University Hospital, Taipei, Taiwan
| | - Chun-Jung Chang
- Graduate Institute of Oncology, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Chia-Tung Shun
- Department of Pathology, National Taiwan University Hospital, Taipei, Taiwan,Department of Forensic Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Chih-Yeu Fang
- Department of Pathology, Wan Fan Hospital, Taipei Medical University, Taipei, Taiwan
| | - Yu-Yun Shao
- Graduate Institute of Oncology, National Taiwan University College of Medicine, Taipei, Taiwan,Department of Oncology, National Taiwan University Hospital, Taipei, Taiwan,National Taiwan University Cancer Center, Taipei, Taiwan
| | - Tsung-Hao Liu
- Department of Oncology, National Taiwan University Hospital, Taipei, Taiwan,Department of Internal Medicine, National Taiwan University Hospital Hsin-Chu Branch, Hsinchu, Taiwan
| | - Ann-Lii Cheng
- Graduate Institute of Oncology, National Taiwan University College of Medicine, Taipei, Taiwan,Department of Oncology, National Taiwan University Hospital, Taipei, Taiwan,Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan,National Taiwan University Cancer Center, Taipei, Taiwan
| | - Chih-Hung Hsu
- Graduate Institute of Oncology, National Taiwan University College of Medicine, Taipei, Taiwan,Department of Oncology, National Taiwan University Hospital, Taipei, Taiwan,*Chih-Hung Hsu, MD, PhD, and Ann-Lii Cheng, MD, PhD, Department of Oncology, National Taiwan University Hospital, 7 Chung-Shan South Road, Taipei 10002 (Taiwan, ROC), E-Mail and
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10
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Hofman P, Badoual C, Henderson F, Berland L, Hamila M, Long-Mira E, Lassalle S, Roussel H, Hofman V, Tartour E, Ilié M. Multiplexed Immunohistochemistry for Molecular and Immune Profiling in Lung Cancer-Just About Ready for Prime-Time? Cancers (Basel) 2019; 11:cancers11030283. [PMID: 30818873 PMCID: PMC6468415 DOI: 10.3390/cancers11030283] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 02/23/2019] [Accepted: 02/25/2019] [Indexed: 12/31/2022] Open
Abstract
As targeted molecular therapies and immuno-oncology have become pivotal in the management of patients with lung cancer, the essential requirement for high throughput analyses and clinical validation of biomarkers has become even more intense, with response rates maintained in the 20%–30% range. Moreover, the list of treatment alternatives, including combination therapies, is rapidly evolving. The molecular profiling and specific tumor-associated immune contexture may be predictive of response or resistance to these therapeutic strategies. Multiplexed immunohistochemistry is an effective and proficient approach to simultaneously identify specific proteins or molecular abnormalities, to determine the spatial distribution and activation state of immune cells, as well as the presence of immunoactive molecular expression. This method is highly advantageous for investigating immune evasion mechanisms and discovering potential biomarkers to assess mechanisms of action and to predict response to a given treatment. This review provides views on the current technological status and evidence for clinical applications of multiplexing and how it could be applied to optimize clinical management of patients with lung cancer.
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Affiliation(s)
- Paul Hofman
- Laboratory of Clinical and Experimental Pathology, Hospital-Integrated Biobank (BB-0033-00025), Nice Hospital University, FHU OncoAge, Université Côte d'Azur, Nice 06000, France.
- Team 4, Institute for Research on Cancer and Aging, Nice (IRCAN), INSERM U1081/UMR CNRS 7284, FHU OncoAge, Université Côte d'Azur, Nice 06107, France.
| | - Cécile Badoual
- Department of Pathology, Hôpital Européen Georges Pompidou, APHP, Paris 75015, France.
- INSERM U970, Université Paris Descartes Sorbonne Paris-Cité, Paris 75015, France.
| | - Fiona Henderson
- Department EMEA, Indica Labs, 2469 Corrales Rd Bldg. A-3 Corrales, NM 87048, USA.
| | - Léa Berland
- Laboratory of Clinical and Experimental Pathology, Hospital-Integrated Biobank (BB-0033-00025), Nice Hospital University, FHU OncoAge, Université Côte d'Azur, Nice 06000, France.
| | - Marame Hamila
- Laboratory of Clinical and Experimental Pathology, Hospital-Integrated Biobank (BB-0033-00025), Nice Hospital University, FHU OncoAge, Université Côte d'Azur, Nice 06000, France.
| | - Elodie Long-Mira
- Laboratory of Clinical and Experimental Pathology, Hospital-Integrated Biobank (BB-0033-00025), Nice Hospital University, FHU OncoAge, Université Côte d'Azur, Nice 06000, France.
- Team 4, Institute for Research on Cancer and Aging, Nice (IRCAN), INSERM U1081/UMR CNRS 7284, FHU OncoAge, Université Côte d'Azur, Nice 06107, France.
| | - Sandra Lassalle
- Laboratory of Clinical and Experimental Pathology, Hospital-Integrated Biobank (BB-0033-00025), Nice Hospital University, FHU OncoAge, Université Côte d'Azur, Nice 06000, France.
- Team 4, Institute for Research on Cancer and Aging, Nice (IRCAN), INSERM U1081/UMR CNRS 7284, FHU OncoAge, Université Côte d'Azur, Nice 06107, France.
| | - Hélène Roussel
- Department of Pathology, Hôpital Européen Georges Pompidou, APHP, Paris 75015, France.
- INSERM U970, Université Paris Descartes Sorbonne Paris-Cité, Paris 75015, France.
| | - Véronique Hofman
- Laboratory of Clinical and Experimental Pathology, Hospital-Integrated Biobank (BB-0033-00025), Nice Hospital University, FHU OncoAge, Université Côte d'Azur, Nice 06000, France.
- Team 4, Institute for Research on Cancer and Aging, Nice (IRCAN), INSERM U1081/UMR CNRS 7284, FHU OncoAge, Université Côte d'Azur, Nice 06107, France.
| | - Eric Tartour
- INSERM U970, Université Paris Descartes Sorbonne Paris-Cité, Paris 75015, France.
- Department of Immunology, Hôpital Européen Georges Pompidou, Paris 75015, France.
| | - Marius Ilié
- Laboratory of Clinical and Experimental Pathology, Hospital-Integrated Biobank (BB-0033-00025), Nice Hospital University, FHU OncoAge, Université Côte d'Azur, Nice 06000, France.
- Team 4, Institute for Research on Cancer and Aging, Nice (IRCAN), INSERM U1081/UMR CNRS 7284, FHU OncoAge, Université Côte d'Azur, Nice 06107, France.
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11
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Fully automated 5-plex fluorescent immunohistochemistry with tyramide signal amplification and same species antibodies. J Transl Med 2017; 97:873-885. [PMID: 28504684 DOI: 10.1038/labinvest.2017.37] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 02/24/2017] [Accepted: 02/25/2017] [Indexed: 12/20/2022] Open
Abstract
The ability to simultaneously visualize the presence, abundance, location and functional state of many targets in cells and tissues has been described as a true next-generation approach in immunohistochemistry (IHC). A typical requirement for multiplex IHC (mIHC) is the use of different animal species for each primary (1°Ab) and secondary (2°Ab) antibody pair. Although 1°Abs from different species have been used with differently labeled species-specific 2°Abs, quite often the appropriate combination of antibodies is not available. More recently, sequential detection of multiple antigens using 1°Abs from the same species used a microwaving treatment between successive antigen detection cycles to elute previously bound 1°Ab/2°Ab complex and therefore to prevent the cross-reactivity of anti-species 2°Abs used in subsequent detection cycles. We present here a fully automated 1°Ab/2°Ab complex heat deactivation (HD) method on Ventana's BenchMark ULTRA slide stainer. This method is applied to detection using fluorophore-conjugated tyramide deposited on the tissue and takes advantage of the strong covalent bonding of the detection substrate to the tissue, preventing its elution in the HD process. The HD process was characterized for (1) effectiveness in preventing Ab cross-reactivity, (2) impact on the epitopes and (3) impact on the fluorophores. An automated 5-plex fluorescent IHC assay was further developed using the HD method and rabbit 1°Abs for CD3, CD8, CD20, CD68 and FoxP3 immune biomarkers in human tissue specimens. The fluorophores were carefully chosen and the narrow-band filters were designed to allow visualization of the staining under fluorescent microscope with minimal bleed through. The automated 5-plex fluorescent IHC assay achieved staining results comparable to the respective single-plex chromogenic IHC assays. This technology enables automated mIHC using unmodified 1°Abs from same species and the corresponding anti-species 2°Ab on a clinically established automated platform to ensure staining quality, reliability and reproducibility.
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12
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Mansfield JR. Phenotyping Multiple Subsets of Immune Cells In Situ in FFPE Tissue Sections: An Overview of Methodologies. Methods Mol Biol 2017; 1546:75-99. [PMID: 27896758 DOI: 10.1007/978-1-4939-6730-8_5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The recent clinical success of new cancer immunotherapy agents and methods is driving the need to understand the role of immune cells in solid tissues, especially tumors. Immune cell phenotyping via flow cytometry, while a cornerstone of immunology, is not spatially resolved and cannot analyze immune cell subsets in situ in clinical biopsy sections or to determine their interrelationships. To address this problem, a number of methodologies have been developed in attempts to phenotype immune and other cells in images acquired from tissue sections and to assess their organization in the tumor and its microenvironment. This chapter review the staining and multiplex image analysis methods that have been developed for phenotyping immune and other cells in formalin-fixed, paraffin-embedded (FFPE) tissue sections.
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Prost S, Kishen REB, Kluth DC, Bellamy COC. Choice of Illumination System & Fluorophore for Multiplex Immunofluorescence on FFPE Tissue Sections. PLoS One 2016; 11:e0162419. [PMID: 27632367 PMCID: PMC5025086 DOI: 10.1371/journal.pone.0162419] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Accepted: 08/22/2016] [Indexed: 12/16/2022] Open
Abstract
The recent availability of novel dyes and alternative light sources to facilitate complex tissue immunofluorescence studies such as multiplex labelling has not been matched by reports critically evaluating the considerations and relative benefits of these new tools, particularly in combination. Product information is often limited to wavelengths used for older fluorophores (FITC, TRITC & corresponding Alexa dyes family). Consequently, novel agents such as Quantum dots are not widely appreciated or used, despite highly favourable properties including extremely bright emission, stability and potentially reduced tissue autofluorescence at the excitation wavelength. Using spectral analysis, we report here a detailed critical appraisal and comparative evaluation of different light sources and fluorophores in multiplex immunofluorescence of clinical biopsy sections. The comparison includes mercury light, metal halide and 3 different LED-based systems, using 7 Qdots (525, 565, 585, 605, 625, 705), Cy3 and Cy5. We discuss the considerations relevant to achieving the best combination of light source and fluorophore for accurate multiplex fluorescence quantitation. We highlight practical limitations and confounders to quantitation with filter-based approaches.
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Affiliation(s)
- Sandrine Prost
- Department of Pathology, University of Edinburgh, Deanery of Molecular Genetics and Public Health Sciences, Queen's Medical Research Institute, Edinburgh, Scotland, United Kingdom
| | - Ria E. B. Kishen
- Department of Pathology, University of Edinburgh, Deanery of Molecular Genetics and Public Health Sciences, Queen's Medical Research Institute, Edinburgh, Scotland, United Kingdom
| | - David C. Kluth
- Centre for Inflammation Research, Queen's Medical Research Institute, University of Edinburgh, Edinburgh Medical School, Edinburgh, Scotland, United Kingdom
| | - Christopher O. C. Bellamy
- Department of Pathology, University of Edinburgh, Royal Infirmary of Edinburgh, Edinburgh, Scotland, United Kingdom
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14
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Pellicciari C. Histochemistry in biology and medicine: a message from the citing journals. Eur J Histochem 2015; 59:2610. [PMID: 26708189 PMCID: PMC4698620 DOI: 10.4081/ejh.2015.2610] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Accepted: 12/21/2015] [Indexed: 02/08/2023] Open
Abstract
Especially in recent years, biomedical research has taken advantage of the progress in several disciplines, among which microscopy and histochemistry. To assess the influence of histochemistry in the biomedical field, the articles published during the period 2011-2015 have been selected from different databases and grouped by subject categories: as expected, biological and biomedical studies where histochemistry has been used as a major experimental approach include a wide of basic and applied researches on both humans and other animal or plant organisms. To better understand the impact of histochemical publications onto the different biological and medical disciplines, it was useful to look at the journals where the articles published in a multidisciplinary journal of histochemistry have been cited: it was observed that, in the five-years period considered, 20% only of the citations were in histochemical periodicals, the remaining ones being in journals of Cell & Tissue biology, general and experimental Medicine, Oncology, Biochemistry & Molecular biology, Neurobiology, Anatomy & Morphology, Pharmacology & Toxicology, Reproductive biology, Veterinary sciences, Physiology, Endocrinology, Tissue engineering & Biomaterials, as well as in multidisciplinary journals.It is easy to foresee that also in the future the histochemical journals will be an attended forum for basic and applied scientists in the biomedical field. It will be crucial that these journals be open to an audience as varied as possible, publishing articles on the application of refined techniques to very different experimental models: this will stimulate non-histochemist scientists to approach histochemistry whose application horizon could expand to novel and possibly exclusive subjects.
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Weis CA, Grießmann BW, Scharff C, Detzner C, Pfister E, Marx A, Zoellner FG. On the representation of cells in bone marrow pathology by a scalar field: propagation through serial sections, co-localization and spatial interaction analysis. Diagn Pathol 2015; 10:151. [PMID: 26330285 PMCID: PMC4557224 DOI: 10.1186/s13000-015-0383-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Accepted: 08/13/2015] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Immunohistochemical analysis of cellular interactions in the bone marrow in situ is demanding, due to its heterogeneous cellular composition, the poor delineation and overlap of functional compartments and highly complex immunophenotypes of several cell populations (e.g. regulatory T-cells) that require immunohistochemical marker sets for unambiguous characterization. To overcome these difficulties, we herein present an approach to describe objects (e.g. cells, bone trabeculae) by a scalar field that can be propagated through registered images of serial histological sections. METHODS The transformation of objects within images (e.g. cells) to a scalar field was performed by convolution of the object's centroids with differently formed radial basis function (e.g. for direct or indirect spatial interaction). On the basis of such a scalar field, a summation field described distributed objects within an image. RESULTS After image registration i) colocalization analysis could be performed on basis scalar field, which is propagated through registered images, and - due to the shape of the field - were barely prone to matching errors and morphological changes by different cutting levels; ii) furthermore, depending on the field shape the colocalization measurements could also quantify spatial interaction (e.g. direct or paracrine cellular contact); ii) the field-overlap, which represents the spatial distance, of different objects (e.g. two cells) could be calculated by the histogram intersection. CONCLUSIONS The description of objects (e.g. cells, cell clusters, bone trabeculae etc.) as a field offers several possibilities: First, co-localization of different markers (e.g. by immunohistochemical staining) in serial sections can be performed in an automatic, objective and quantifiable way. In contrast to multicolour staining (e.g. 10-colour immunofluorescence) the financial and technical requirements are fairly minor. Second, the approach allows searching for different types of spatial interactions (e.g. direct and indirect cellular interaction) between objects by taking field shape into account (e.g. thin vs. broad). Third, by describing spatially distributed groups of objects as summation field, it gives cluster definition that relies rather on the bare object distance than on the modelled spatial cellular interaction.
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Affiliation(s)
- Cleo-Aron Weis
- Institute of Pathology, University Medical Centre Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Germany.
| | - Benedict Walter Grießmann
- Institute of Pathology, University Medical Centre Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Germany
| | - Christoph Scharff
- Institute of Pathology, University Medical Centre Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Germany
| | - Caecilia Detzner
- Institute of Pathology, University Medical Centre Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Germany
| | - Eva Pfister
- Department of Nephropathology, Institute of Pathology, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuermberg, Erlangen, Germany
| | - Alexander Marx
- Institute of Pathology, University Medical Centre Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Germany
| | - Frank Gerrit Zoellner
- Computer Assisted Clinical Medicine, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
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Jensen DH, Reibel J, Mackenzie IC, Dabelsteen E. Single cell migration in oral squamous cell carcinoma - possible evidence of epithelial-mesenchymal transition in vivo. J Oral Pathol Med 2015; 44:674-9. [PMID: 25880532 DOI: 10.1111/jop.12321] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/02/2015] [Indexed: 01/01/2023]
Abstract
BACKGROUND The invasion of cancer cells into the surrounding normal tissue is one of the defining features of cancer. While the phenomena of tumour budding, epithelial-mesenchymal transition and the presence of myofibroblasts have independently been shown to be related to a poor prognosis of oral carcinomas, their relationship has not been examined in detail. METHODS Paraffin-embedded tissues from 28 patients with oral squamous cell carcinomas were stained with antibodies to cytokeratin, α-SMA, vimentin, E-cadherin, N-cadherin and Twist and evaluated for their expression in relation to invasive cancer cells and the surrounding tumour stroma. RESULTS AND CONCLUSIONS A direct, histological relationship between invading, budding tumour cells and myofibroblasts was occasionally seen but was not a general feature. Most of the budding tumour cells at the invasive front had a decreased expression of E-cadherin, but we did not find that this was associated with a consistent or clear increase in either N-cadherin or vimentin. We therefore suggest that the budding of tumour cells is not dependent upon either myofibroblasts or a complete epithelial-mesenchymal transition and that these phenomena most likely represent separate processes in tumour progression.
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Affiliation(s)
- David H Jensen
- Department of Otorhinolaryngology, Head and Neck Surgery and Audiology, Rigshospitalet and University of Copenhagen, Copenhagen, Denmark
| | - Jesper Reibel
- Oral Pathology and Oral Medicine, Department of Odontology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Ian C Mackenzie
- Blizard Institute of Cell and Molecular Science, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Erik Dabelsteen
- Department of Odontology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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Pellicciari C. Impact of Histochemistry on biomedical research: looking through the articles published in a long-established histochemical journal. Eur J Histochem 2014; 58:2474. [PMID: 25578981 PMCID: PMC4289853 DOI: 10.4081/ejh.2014.2474] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2014] [Accepted: 12/29/2014] [Indexed: 12/19/2022] Open
Abstract
Histochemistry provides the unique opportunity to detect single molecules in the very place where they exert their structural roles or functional activities: this makes it possible to correlate structural organization and function, and may be fruitfully exploited in countless biomedical research topics. Aiming to estimate the impact of histochemical articles in the biomedical field, the last few years citations of articles published in a long-established histochemical journal have been considered. This brief survey suggests that histochemical journals, especially the ones open to a large spectrum of research subjects, do represent an irreplaceable source of information not only for cell biologists, microscopists or anatomists, but also for biochemists, molecular biologists and biotechnologists.
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Osman TA, Parajuli H, Sapkota D, Ahmed IAH, Johannessen AC, Costea DE. The low-affinity nerve growth factor receptor p75NTR identifies a transient stem cell-like state in oral squamous cell carcinoma cells. J Oral Pathol Med 2014; 44:410-9. [PMID: 25212757 DOI: 10.1111/jop.12251] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/19/2014] [Indexed: 12/15/2022]
Abstract
BACKGROUND Although several markers have been used for enrichment of cells with stem cell-like properties in oral squamous cell carcinoma (OSCC), isolation of a pure subpopulation is still a challenging task. Normal oral and esophageal keratinocyte stem cells have been previously isolated using the low-affinity nerve growth factor receptor p75NTR. OBJECTIVE To investigate the potential of p75NTR as a marker for identification and isolation of oral cancer cells with stem cell-like properties. METHODS Subpopulations of cells with high or low expression of p75NTR were sorted from OSCC-derived cells and compared for sphere/colony formation, in vivo tumor formation ability, expression of stem cell-related molecules, cell cycle distribution and drug resistance. RESULTS p75NTR(High) cells exhibited statistically significant higher stem cell properties than p75NTR(Low) cells in all assays performed. Nevertheless, p75NTR(Low) subpopulation did also exhibit some stem cell features, but to a lesser extent. Propagation of p75NTR(Low) cells for several passages in culture showed that the expression of p75NTR could rise spontaneously. This finding was also supported by the similar expression of p75NTR by the xenografts generated by both subpopulations in NOD\SCID IL2Rg(null) mice. CONCLUSION p75NTR can be used for isolating a subpopulation enriched for cells with stem cell-like properties in OSCC. De novo generation of p75NTR(High) cells from p75NTR(Low) cells suggests either that there is another subpopulation with stem cell features within the p75NTR(Low) cells, or that the p75NTR(Low) cells can dedifferentiate due to a contextually regulated equilibrium between stem cell-like cells and transit-amplifying neoplastic progenitors.
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Affiliation(s)
- Tarig A Osman
- Gade Laboratory for Pathology, Department of Clinical Medicine, Faculty of Medicine and Dentistry, University of Bergen, Bergen, Norway.,Department of Global Public Health and Primary Care, Center for International Health, Faculty of Medicine and Dentistry, University of Bergen, Bergen, Norway
| | - Himalaya Parajuli
- Gade Laboratory for Pathology, Department of Clinical Medicine, Faculty of Medicine and Dentistry, University of Bergen, Bergen, Norway.,Department of Global Public Health and Primary Care, Center for International Health, Faculty of Medicine and Dentistry, University of Bergen, Bergen, Norway
| | - Dipak Sapkota
- Gade Laboratory for Pathology, Department of Clinical Medicine, Faculty of Medicine and Dentistry, University of Bergen, Bergen, Norway
| | - Israa A H Ahmed
- Gade Laboratory for Pathology, Department of Clinical Medicine, Faculty of Medicine and Dentistry, University of Bergen, Bergen, Norway.,Department of Global Public Health and Primary Care, Center for International Health, Faculty of Medicine and Dentistry, University of Bergen, Bergen, Norway
| | - Anne Ch Johannessen
- Gade Laboratory for Pathology, Department of Clinical Medicine, Faculty of Medicine and Dentistry, University of Bergen, Bergen, Norway.,Department of Pathology, Haukeland University Hospital, Bergen, Norway
| | - Daniela Elena Costea
- Gade Laboratory for Pathology, Department of Clinical Medicine, Faculty of Medicine and Dentistry, University of Bergen, Bergen, Norway.,Department of Pathology, Haukeland University Hospital, Bergen, Norway.,Department of Biomedicine, Faculty of Medicine and Dentistry, University of Bergen, Bergen, Norway
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Pellicciari C. Histochemistry as an irreplaceable approach for investigating functional cytology and histology. Eur J Histochem 2013; 57:e41. [PMID: 24441194 PMCID: PMC3896043 DOI: 10.4081/ejh.2013.e41] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2013] [Accepted: 12/17/2013] [Indexed: 12/19/2022] Open
Abstract
In agreement with the evolution of histochemistry over the last fifty years and thanks to the impressive advancements in microscopy sciences, the application of cytochemical techniques to light and electron microscopy is more and more addressed to elucidate the functional characteristics of cells and tissue under different physiological, pathological or experimental conditions. Simultaneously, the mere description of composition and morphological features has become increasingly sporadic in the histochemical literature. Since basic research on cell functional organization is essential for understanding the mechanisms responsible for major biological processes such as differentiation or growth control in normal and tumor tissues, histochemical Journals will continue to play a pivotal role in the field of cell and tissue biology in all its structural and functional aspects.
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