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Carneiro A, Piairo P, Matos B, Santos DAR, Palmeira C, Santos LL, Lima L, Diéguez L. Minimizing false positives for CTC identification. Anal Chim Acta 2024; 1288:342165. [PMID: 38220297 DOI: 10.1016/j.aca.2023.342165] [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] [Received: 10/12/2023] [Revised: 12/15/2023] [Accepted: 12/17/2023] [Indexed: 01/16/2024]
Abstract
BACKGROUND Cancer is a leading cause of death worldwide, with metastasis playing a significant role. Circulating Tumour Cells (CTCs) can provide important real-time insights into tumour heterogeneity and clonal evolution, making them an important tool for early diagnosis and patient monitoring. Isolated CTCs are typically identified by immunocytochemistry using positive biomarkers (cytokeratin) and exclusion biomarkers (CD45). However, some white blood cell (WBC) populations can express low levels of CD45 and stain non-specifically for cytokeratin, increasing their risk of misclassification as CTCs. There is a clear need to improve CTC detection and enumeration criteria to unequivocally eliminate interfering WBC populations. RESULTS This study showed that, indeed, some granulocyte subpopulations expressed low levels of CD45 and stained non-specifically for cytokeratin, misidentifying them as CTCs. These same cells, however, strongly expressed CD15, allowing them to be identified as WBCs and excluded from CTC classification. Flow cytometry confirmed the specificity of the CD15 antibody for the granulocyte subpopulation. False positives were considerably reduced from 25 % to 0.2 % by double exclusion, combining a CD15 antibody with a highly specific CD45 antibody. Furthermore, complete elimination of potential false positives was achieved using double exclusion in combination with improved selection of cytokeratin antibody. The study emphasises the importance of a robust exclusion criteria and high antibody specificity in CTC immuno-assays for accurate identification of CTC candidates and thorough exclusion of interfering WBC subpopulations. SIGNIFICANCE This study demonstrated how misidentifying a granulocyte subpopulation can lead to inaccurate CTC evaluation. However, sensitivity and specificity of CTC identification may be improved by using high-performing antibodies and by including a second exclusion biomarker, in turn, allowing for a more comprehensive clinical application of CTCs.
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Affiliation(s)
- Adriana Carneiro
- International Iberian Nanotechnology Laboratory, Avenida Mestre José Veiga s/n, 4715-330, Braga, Portugal; Experimental Pathology and Therapeutics Group, Research Center of IPO Porto (CI IPOP) / RISE @ CI-IPOP (Health Research Network), Portuguese Oncology Institute of Porto (IPO Porto), Porto Comprehensive Cancer Center (Porto.CCC), 4200-072, Porto, Portugal; Instituto de Ciências Biomédicas Abel Salazar (ICBAS) da Universidade do Porto, Porto, Portugal
| | - Paulina Piairo
- International Iberian Nanotechnology Laboratory, Avenida Mestre José Veiga s/n, 4715-330, Braga, Portugal; RUBYnanomed Lda, Praça Conde de Agrolongo 123, 4700-312, Braga, Portugal.
| | - Beatriz Matos
- International Iberian Nanotechnology Laboratory, Avenida Mestre José Veiga s/n, 4715-330, Braga, Portugal; NOVA School of Science and Technology, Caparica, 2829-516, Portugal
| | - Daniela A R Santos
- Experimental Pathology and Therapeutics Group, Research Center of IPO Porto (CI IPOP) / RISE @ CI-IPOP (Health Research Network), Portuguese Oncology Institute of Porto (IPO Porto), Porto Comprehensive Cancer Center (Porto.CCC), 4200-072, Porto, Portugal; School of Health, Polytechnic Institute of Porto, Rua Dr. António Bernardino de Almeida, 400, 4200-072, Porto, Portugal
| | - Carlos Palmeira
- Experimental Pathology and Therapeutics Group, Research Center of IPO Porto (CI IPOP) / RISE @ CI-IPOP (Health Research Network), Portuguese Oncology Institute of Porto (IPO Porto), Porto Comprehensive Cancer Center (Porto.CCC), 4200-072, Porto, Portugal; Department of Immunology, Portuguese Oncology Institute of Porto (IPO-Porto), Porto, 4200-072, Portugal; Biomedical Research Center (CEBIMED, Faculty of Health Sciences, Fernando Pessoa University (UFP), Porto, 4249-004, Portugal
| | - Lúcio Lara Santos
- Experimental Pathology and Therapeutics Group, Research Center of IPO Porto (CI IPOP) / RISE @ CI-IPOP (Health Research Network), Portuguese Oncology Institute of Porto (IPO Porto), Porto Comprehensive Cancer Center (Porto.CCC), 4200-072, Porto, Portugal; Department of Surgical Oncology, Portuguese Institute of Oncology (IPO-Porto), 4200-072, Porto, Portugal
| | - Luís Lima
- Experimental Pathology and Therapeutics Group, Research Center of IPO Porto (CI IPOP) / RISE @ CI-IPOP (Health Research Network), Portuguese Oncology Institute of Porto (IPO Porto), Porto Comprehensive Cancer Center (Porto.CCC), 4200-072, Porto, Portugal
| | - Lorena Diéguez
- International Iberian Nanotechnology Laboratory, Avenida Mestre José Veiga s/n, 4715-330, Braga, Portugal; RUBYnanomed Lda, Praça Conde de Agrolongo 123, 4700-312, Braga, Portugal.
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Lewis JE, Cooper LAD, Jaye DL, Pozdnyakova O. Automated Deep Learning-Based Diagnosis and Molecular Characterization of Acute Myeloid Leukemia Using Flow Cytometry. Mod Pathol 2024; 37:100373. [PMID: 37925056 DOI: 10.1016/j.modpat.2023.100373] [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] [Received: 09/18/2023] [Revised: 10/23/2023] [Accepted: 10/28/2023] [Indexed: 11/06/2023]
Abstract
The current flow cytometric analysis of blood and bone marrow samples for diagnosis of acute myeloid leukemia (AML) relies heavily on manual intervention in the processing and analysis steps, introducing significant subjectivity into resulting diagnoses and necessitating highly trained personnel. Furthermore, concurrent molecular characterization via cytogenetics and targeted sequencing can take multiple days, delaying patient diagnosis and treatment. Attention-based multi-instance learning models (ABMILMs) are deep learning models that make accurate predictions and generate interpretable insights regarding the classification of a sample from individual events/cells; nonetheless, these models have yet to be applied to flow cytometry data. In this study, we developed a computational pipeline using ABMILMs for the automated diagnosis of AML cases based exclusively on flow cytometric data. Analysis of 1820 flow cytometry samples shows that this pipeline provides accurate diagnoses of acute leukemia (area under the receiver operating characteristic curve [AUROC] 0.961) and accurately differentiates AML vs B- and T-lymphoblastic leukemia (AUROC 0.965). Models for prediction of 9 cytogenetic aberrancies and 32 pathogenic variants in AML provide accurate predictions, particularly for t(15;17)(PML::RARA) [AUROC 0.929], t(8;21)(RUNX1::RUNX1T1) (AUROC 0.814), and NPM1 variants (AUROC 0.807). Finally, we demonstrate how these models generate interpretable insights into which individual flow cytometric events and markers deliver optimal diagnostic utility, providing hematopathologists with a data visualization tool for improved data interpretation, as well as novel biological associations between flow cytometric marker expression and cytogenetic/molecular variants in AML. Our study is the first to illustrate the feasibility of using deep learning-based analysis of flow cytometric data for automated AML diagnosis and molecular characterization.
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Affiliation(s)
- Joshua E Lewis
- Department of Pathology, Brigham and Women's Hospital, Boston, Massachusetts
| | - Lee A D Cooper
- Department of Pathology, Northwestern University, Chicago, Illinois
| | - David L Jaye
- Department of Pathology and Laboratory Medicine, Emory University, Atlanta, Georgia
| | - Olga Pozdnyakova
- Department of Pathology, Brigham and Women's Hospital, Boston, Massachusetts.
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Zhao H, Li W, Zhou X, Pan L, Feng Y, Gao P, Ji J, Zhang H, Zhao K, Wang C, Lu Z. C-X-C Motif Chemokine Ligand 1 Promotes Colitis by Modulating the Gut Microbiota. J Innate Immun 2023; 16:33-44. [PMID: 38071977 PMCID: PMC10776137 DOI: 10.1159/000535637] [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] [Received: 07/17/2023] [Accepted: 12/01/2023] [Indexed: 01/11/2024] Open
Abstract
INTRODUCTION C-X-C motif chemokine ligand 1 (CXCL1) is a potent neutrophil chemoattractant that plays a pivotal role in recruiting neutrophils during inflammatory conditions. This study explored the role of CXCL1 in modulating the gut microbiota, influencing neutrophil infiltration, and contributing to the development of colitis. METHODS We employed quantitative PCR to assess CXCL1 expression in colon samples. A mouse model of dextran sulfate sodium (DSS)-induced colitis was utilized to explore the progression of colitis in wild-type (WT) and CXCL1-deficient (CXCL1-/-) mice. RESULTS Colitis attenuation was evident in CXCL1-/- mice. Significant alterations were observed in the gut microbiome, as revealed by 16S rRNA gene sequencing. Furthermore, CXCL1-/- mice exhibited reduced gut permeability and diminished endotoxin levels in peripheral blood following DSS treatment compared to WT mice. In response to DSS treatment, WT mice showed a clear increase in neutrophil infiltration, while CXCL1-/- mice exhibited lower levels of infiltration. Fecal microbiota transplantation (FMT) using stools from CXCL1-/- mice alleviated DSS-induced colitis. Interestingly, FMT from patients with colitis increased CXCL1 and Ly6G expression in the colons of gut-sterilized mice. Clinical data analysis revealed elevated CXCL1 and CD15 expression in patients with colitis, with a positive correlation between the severity of colitis and the expression of CXCL1 and CD15. CONCLUSION These findings shed light on the pivotal role of CXCL1 in promoting colitis by modulating the gut microbiota.
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Affiliation(s)
- Hang Zhao
- Department of Gastroenterology, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai, China
| | - Wenhua Li
- Department of Gastroenterology, Jiading Branch of Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xin Zhou
- Department of Gastroenterology, Jintan Hospital, Jiangsu University, Changzhou, China
| | - Liang Pan
- Department of Gastroenterology, Jintan Hospital, Jiangsu University, Changzhou, China
| | - Yun Feng
- Department of Gastroenterology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Pingyu Gao
- Pathology Center, Jintan Hospital, Jiangsu University, Zhenjiang, China
| | - Jie Ji
- Clinical Laboratory, Jintan Hospital, Jiangsu University, Zhenjiang, China
| | - Huanyan Zhang
- Clinical Laboratory, Jintan Hospital, Jiangsu University, Zhenjiang, China
| | - Kai Zhao
- Department of Gastroenterology, Jintan Hospital, Jiangsu University, Changzhou, China
| | - Chi Wang
- Department of Precision Mechanical Engineering, Shanghai University, Shanghai, China
| | - Zhanjun Lu
- Department of Gastroenterology, Jintan Hospital, Jiangsu University, Changzhou, China
- Department of Gastroenterology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Stenzel PJ, Schindeldecker M, Seidmann L, Herpel E, Hohenfellner M, Hatiboglu G, Foersch S, Porubsky S, Macher-Goeppinger S, Roth W, Tagscherer KE. CD15 Is a Risk Predictor and a Novel Target in Clear Cell Renal Cell Carcinoma. Pathobiology 2023; 91:219-229. [PMID: 37963432 PMCID: PMC11151972 DOI: 10.1159/000535201] [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] [Received: 07/22/2023] [Accepted: 11/09/2023] [Indexed: 11/16/2023] Open
Abstract
INTRODUCTION Tumor cells use adhesion molecules like CD15 or sialylCD15 (sCD15) for metastatic spreading. We analyzed the expression of CD15 and sCD15 in clear cell renal cell carcinoma (ccRCC) regarding prognosis. METHODS A tissue microarray containing tissue specimens of 763 patients with ccRCC was immunohistochemically stained for CD15 and sCD15, their expression quantified using digital image analysis, and the impact on patients' survival analyzed. The cell lines 769p and 786o were stimulated with CD15 or control antibody in vitro and the effects on pathways activating AP-1 and tumor cell migration were examined. RESULTS ccRCC showed a broad range of CD15 and sCD15 expression. A high CD15 expression was significantly associated with favorable outcome (p < 0.01) and low-grade tumor differentiation (p < 0.001), whereas sCD15 had no significant prognostic value. Tumors with synchronous distant metastasis had a significantly lower CD15 expression compared to tumors without any (p < 0.001) or with metachronous metastasis (p < 0.01). Tumor cell migration was significantly reduced after CD15 stimulation in vitro, but there were no major effects on the activating pathways of AP-1. CONCLUSION CD15, but not sCD15, qualifies as a biomarker for risk stratification and as an interesting novel target in ccRCC. Moreover, the data indicate a contribution of CD15 to metachronous metastasis. Further research is warranted to decipher the intracellular pathways of CD15 signaling in ccRCC in order to characterize the CD15 effects on ccRCC more precisely.
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Affiliation(s)
| | - Mario Schindeldecker
- Institute of Pathology, University Medical Center Mainz, Mainz, Germany
- Tissue Biobank, University Medical Center Mainz, Mainz, Germany
| | - Larissa Seidmann
- Institute of Pathology, University Medical Center Mainz, Mainz, Germany
| | - Esther Herpel
- Institute of Pathology, University Hospital Heidelberg, Heidelberg, Germany
- Tissue Bank of the National Center for Tumor Diseases, Heidelberg, Germany
| | | | - Gencay Hatiboglu
- Department of Urology, University Hospital Heidelberg, Heidelberg, Germany
- Department of Urology, SLK-Kliniken Heilbronn GmbH, Heilbronn, Germany
| | - Sebastian Foersch
- Institute of Pathology, University Medical Center Mainz, Mainz, Germany
| | - Stefan Porubsky
- Institute of Pathology, University Medical Center Mainz, Mainz, Germany
| | | | - Wilfried Roth
- Institute of Pathology, University Medical Center Mainz, Mainz, Germany
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Lewis JE, Cooper LA, Jaye DL, Pozdnyakova O. Automated Deep Learning-Based Diagnosis and Molecular Characterization of Acute Myeloid Leukemia using Flow Cytometry. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.09.18.558289. [PMID: 37808719 PMCID: PMC10557578 DOI: 10.1101/2023.09.18.558289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
Current flow cytometric analysis of blood and bone marrow samples for diagnosis of acute myeloid leukemia (AML) relies heavily on manual intervention in both the processing and analysis steps, introducing significant subjectivity into resulting diagnoses and necessitating highly trained personnel. Furthermore, concurrent molecular characterization via cytogenetics and targeted sequencing can take multiple days, delaying patient diagnosis and treatment. Attention-based multi-instance learning models (ABMILMs) are deep learning models which make accurate predictions and generate interpretable insights regarding the classification of a sample from individual events/cells; nonetheless, these models have yet to be applied to flow cytometry data. In this study, we developed a computational pipeline using ABMILMs for the automated diagnosis of AML cases based exclusively on flow cytometric data. Analysis of 1,820 flow cytometry samples shows that this pipeline provides accurate diagnoses of acute leukemia [AUROC 0.961] and accurately differentiates AML versus B- and T-lymphoblastic leukemia [AUROC 0.965]. Models for prediction of 9 cytogenetic aberrancies and 32 pathogenic variants in AML provide accurate predictions, particularly for t(15;17)(PML::RARA) [AUROC 0.929], t(8;21)(RUNX1::RUNX1T1) [AUROC 0.814], and NPM1 variants [AUROC 0.807]. Finally, we demonstrate how these models generate interpretable insights into which individual flow cytometric events and markers deliver optimal diagnostic utility, providing hematopathologists with a data visualization tool for improved data interpretation, as well as novel biological associations between flow cytometric marker expression and cytogenetic/molecular variants in AML. Our study is the first to illustrate the feasibility of using deep learning-based analysis of flow cytometric data for automated AML diagnosis and molecular characterization.
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Affiliation(s)
- Joshua E. Lewis
- Department of Pathology, Brigham and Women’s Hospital, Boston, MA, USA
| | - Lee A.D. Cooper
- Department of Pathology, Northwestern University, Chicago, IL, USA
| | - David L. Jaye
- Department of Pathology and Laboratory Medicine, Emory University, Atlanta, GA, USA
| | - Olga Pozdnyakova
- Department of Pathology, Brigham and Women’s Hospital, Boston, MA, USA
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Mehreen A, Suresh S, Freedman AA, Ernst LM. Histopathologic Findings in Large for Gestational Age Placentas and Correlation With CD15 Immunohistochemistry. Pediatr Dev Pathol 2023; 26:458-465. [PMID: 37599445 DOI: 10.1177/10935266231191965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/22/2023]
Abstract
BACKGROUND The histopathology and CD15 expression in large for gestational age (LGA) placentas is not well-documented. METHODS To analyze this, we utilized 2 separate cohorts of placentas from singleton term deliveries. LGA and appropriate for gestational age (AGA) placentas were compared for major histopathologies including acute and chronic inflammation, maternal and fetal vascular malperfusion, delayed villous maturation (DVM), and villous hypervascularity/chorangiosis. We also examined CD15 immunohistochemistry in LGA and AGA placentas. Stained slides were reviewed blinded to the placental weight. Five random 20× fields were scored semi-quantitatively for CD15 staining of villous capillaries on a scale of 0 to 5 (0 = 0%, 1 = 1%-5%, 2 = 5%-25%, 3 = 25%-50%, 4 = 50%-75%, and 5 = >75%). RESULTS In 1 cohort, 1238 LGA and 7908 AGA placentas were identified. Patients with LGA placentas were significantly more likely to have higher birthweight babies, obesity, hypertensive disorders, pre-gestational, and gestational diabetes. Also, LGA placentas had a higher prevalence of fetal vascular malperfusion, DVM, and villous chorangiosis. In other cohort of 75 LGA placentas and 73 AGA controls, the average score of CD15 staining in villous capillaries was significantly higher amongst LGA placentas. CONCLUSION We conclude that LGA placentas have increased expression of CD15 in villous capillary endothelium and higher prevalence of FVM, DVM, and villous chorangiosis than AGA placentas.
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Affiliation(s)
- Ansa Mehreen
- University of Chicago Pritzker School of Medicine, Chicago, IL, USA
- Department of Pathology and Laboratory Medicine, NorthShore University HealthSystem, Evanston, IL, USA
| | - Sunitha Suresh
- Department of Obstetrics and Gynecology, NorthShore University HealthSystem, Evanston, IL, USA
| | - Alexa A Freedman
- Department of Obstetrics and Gynecology, NorthShore University HealthSystem, Evanston, IL, USA
| | - Linda M Ernst
- University of Chicago Pritzker School of Medicine, Chicago, IL, USA
- Department of Pathology and Laboratory Medicine, NorthShore University HealthSystem, Evanston, IL, USA
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Song J, Wu J, Ding J, Liang Y, Chen C, Liu Y. The effect of SMAD4 on the prognosis and immune response in hypopharyngeal carcinoma. Front Med (Lausanne) 2023; 10:1139203. [PMID: 37035326 PMCID: PMC10076535 DOI: 10.3389/fmed.2023.1139203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Accepted: 03/06/2023] [Indexed: 04/11/2023] Open
Abstract
Objectives In malignant tumors, elevated infiltration of intratumoral CD8+ cytotoxic T cells predicts a beneficial prognosis, whereas high levels of CD15+ neutrophils in peritumor tissues indicate poor prognosis. It is unclear how SMAD4, which promotes favorable clinical outcomes and antitumor immunoregulation, along with CD8+ cytotoxic T cells and CD15+ neutrophils exert an influence on hypopharyngeal carcinoma (HPC). Materials and methods Specimens were collected from 97 patients with HPC. Immunohistological analyses of SMAD4, CD8+ cytotoxic T cell and CD15+ neutrophil expression were performed. SMAD4 nuclear intensity was measured, meanwhile, CD8+ cytotoxic T cells and CD15+ neutrophils were counted under a microscope. The prognostic role of SMAD4 was determined using the log-rank test and univariate and multivariate analyses. The relationship among SMAD4, CD8+ cytotoxic T cells, and CD15+ neutrophils was estimated by Mann-Whitney U test. Results High levels of SMAD4 were associated with favorable overall survival (OS) and disease-free survival (DFS) in HPC. Multivariate analysis suggested that SMAD4 is an independent predictor of OS and DFS. A high density of intratumoral CD8+ cytotoxic T cells and low accumulation of CD15+ neutrophils in the peritumor area were associated with longer OS and DFS. Furthermore, SMAD4 was linked to the levels of intratumoral CD8+ cytotoxic T cells and peritumoral CD15+ neutrophils. Patients with high SMAD4/high intratumoral CD8+ cytotoxic T cells or high SMAD4/low peritumoral CD15+ neutrophils showed the best prognosis. Conclusion SMAD4, CD8+ cytotoxic T cell level, and CD15+ neutrophil level have prognostic value in HPC. SMAD4 is a promising prognostic marker reflecting immune response in HPC.
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Cao M, Zhang L, Cheng J, Wang C, Zhao J, Liu X, Yan Y, Tang Y, Chen Z, Li H. Differential antigen expression between human apocrine sweat glands and eccrine sweat glands. Eur J Histochem 2022; 67:3559. [PMID: 36546419 PMCID: PMC9827426 DOI: 10.4081/ejh.2023.3559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Accepted: 11/29/2022] [Indexed: 12/24/2022] Open
Abstract
Bromhidrosis has a great negative impact on personal occupation and social psychology. It is not yet clear whether bromhidrosis is caused by apocrine sweat glands or the co-action of apocrine sweat glands and eccrine sweat glands. To distinguish between apocrine sweat glands and eccrine sweat glands, specific antigen markers for apocrine sweat glands and eccrine sweat glands must be found first. In the study, we detected the expression of K7, K18, K19, Na+-K+-2Cl- cotransporter 1 (NKCC1), carbonic anhydrase II (CAII), Forkhead transcription factor a1 (Foxa1), homeobox transcription factor engrailed homeobox1 (En1), gross cystic disease fluid protein-15 (GCDFP-15), mucin-1 (MUC-1), cluster of differentiation 15 (CD15) and apolipoprotein (APOD) in eccrine sweat glands and apocrine sweat glands by immunofluorescence staining. The results showed that K7, K18, K19, Foxa1, GCDFP-15 and MUC-1 were expressed in both apocrine and eccrine sweat glands, CD15 and APOD were only expressed in apocrine sweat glands, and CAII, NKCC1 and En1 were only expressed in eccrine sweat glands. We conclude that CD15 and APOD can serve as specific markers for apocrine sweat glands, while CAII, NKCC1 and En1 can serve as specific markers for eccrine sweat glands to differentiate the two sweat glands.
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Affiliation(s)
- Manxiu Cao
- Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei,*These authors contributed equally to this work
| | - Lei Zhang
- Department of Mental Health, Southern University of Science and Technology Hospital, Southern University of Science and Technology School of Medicine, Shenzhen, Guangdong,*These authors contributed equally to this work
| | - Jiaqi Cheng
- Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei,*These authors contributed equally to this work
| | - Cangyu Wang
- Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei
| | - Junhong Zhao
- Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei
| | - Xiang Liu
- Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei
| | - Yongjing Yan
- Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei
| | - Yue Tang
- Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei
| | - Zixiu Chen
- Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei
| | - Haihong Li
- Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei,Department of Wound Repair; Institute of Wound Repair and Regeneration Medicine, Southern University of Science and Technology Hospital, Southern University of Science and Technology School of Medicine, Shenzhen, Guangdong, China,Correspondence: Prof. Haihong Li, Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, 32 South Renmin Road, Shiyan 442000, Hubei, China.
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Ton Tran HT, Li C, Chakraberty R, Cairo CW. NEU1 and NEU3 enzymes alter CD22 organization on B cells. BIOPHYSICAL REPORTS 2022; 2:100064. [PMID: 36425332 PMCID: PMC9680808 DOI: 10.1016/j.bpr.2022.100064] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 07/19/2022] [Indexed: 06/16/2023]
Abstract
The B cell membrane expresses sialic-acid-binding immunoglobulin-like lectins, also called Siglecs, that are important for modulating immune response. Siglecs have interactions with sialoglycoproteins found on the same membrane (cis-ligands) that result in homotypic and heterotypic receptor clusters. The regulation and organization of these clusters, and their effect on cell activation, is not clearly understood. We investigated the role of human neuraminidase enzymes NEU1 and NEU3 on the clustering of CD22 on B cells using confocal microscopy. We observed that native NEU1 and NEU3 activity influence the cluster size of CD22. Using single-particle tracking, we observed that NEU3 activity increased the lateral mobility of CD22, which was in contrast to the effect of exogenous bacterial NEU enzymes. Moreover, we show that native NEU1 and NEU3 activity influenced cellular Ca2+ levels, supporting a role for these enzymes in regulating B cell activation. Our results establish a role for native NEU activity in modulating CD22 organization and function on B cells.
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Affiliation(s)
- Hanh-Thuc Ton Tran
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada
| | - Caishun Li
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada
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Hyun SW, Feng C, Liu A, Lillehoj EP, Trotta R, Kingsbury TJ, Passaniti A, Lugkey KN, Chauhan S, Cipollo JF, Luzina IG, Atamas SP, Cross AS, Goldblum SE. Altered sialidase expression in human myeloid cells undergoing apoptosis and differentiation. Sci Rep 2022; 12:14173. [PMID: 35986080 PMCID: PMC9390117 DOI: 10.1038/s41598-022-18448-6] [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: 06/25/2021] [Accepted: 08/11/2022] [Indexed: 11/10/2022] Open
Abstract
To gain insight into sialic acid biology and sialidase/neuraminidase (NEU) expression in mature human neutrophil (PMN)s, we studied NEU activity and expression in PMNs and the HL60 promyelocytic leukemic cell line, and changes that might occur in PMNs undergoing apoptosis and HL60 cells during their differentiation into PMN-like cells. Mature human PMNs contained NEU activity and expressed NEU2, but not NEU1, the NEU1 chaperone, protective protein/cathepsin A(PPCA), NEU3, and NEU4 proteins. In proapoptotic PMNs, NEU2 protein expression increased > 30.0-fold. Granulocyte colony-stimulating factor protected against NEU2 protein upregulation, PMN surface desialylation and apoptosis. In response to 3 distinct differentiating agents, dimethylformamide, dimethylsulfoxide, and retinoic acid, total NEU activity in differentiated HL60 (dHL60) cells was dramatically reduced compared to that of nondifferentiated cells. With differentiation, NEU1 protein levels decreased > 85%, PPCA and NEU2 proteins increased > 12.0-fold, and 3.0-fold, respectively, NEU3 remained unchanged, and NEU4 increased 1.7-fold by day 3, and then returned to baseline. In dHL60 cells, lectin blotting revealed decreased α2,3-linked and increased α2,6-linked sialylation. dHL60 cells displayed increased adhesion to and migration across human bone marrow-derived endothelium and increased bacterial phagocytosis. Therefore, myeloid apoptosis and differentiation provoke changes in NEU catalytic activity and protein expression, surface sialylation, and functional responsiveness.
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Ma Z, Yang H, Kessler M, Sperandio M, Mahner S, Jeschke U, von Schönfeldt V. Targeting Aberrantly Elevated Sialyl Lewis A as a Potential Therapy for Impaired Endometrial Selection Ability in Unexplained Recurrent Miscarriage. Front Immunol 2022; 13:919193. [PMID: 35837404 PMCID: PMC9273867 DOI: 10.3389/fimmu.2022.919193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 06/02/2022] [Indexed: 11/23/2022] Open
Abstract
Background Carbohydrate Lewis antigens including sialyl Lewis A (sLeA), sialyl Lewis X (sLeX), Lewis X (LeX), and Lewis Y (LeY) are the commonest cell surface glycoconjugates that play pivotal roles in multiple biological processes, including cell adhesion and cell communication events during embryogenesis. SLeX, LeY, and associated glycosyltransferases ST3GAL3 and FUT4 have been reported to be involved in human embryo implantation. While the expression pattern of Lewis antigens in the decidua of unexplained recurrent miscarriage (uRM) patients remains unclear. Methods Paraffin-embedded placental tissue slides collected from patients experiencing early miscarriages (6–12 weeks) were analyzed using immunohistochemical (IHC) and immunofluorescent (IF) staining. An in vitro assay was developed using endometrial cell line RL95-2 and trophoblast cell line HTR-8/SVneo. Modulatory effect of potential glycosyltransferase on Lewis antigens expression was investigated by target-specific small interfering RNA (siRNA) knockdown in RL95-2 cells. HTR-8/SVneo cells spheroids adhesion assay was applied to investigate the intrinsic role of Lewis antigens in the abnormal implantation process of uRM. The expression of Lewis antigens in RL95-2 cells in response to the treatment with pro-implantation cytokine IL-1β was further measured by flow cytometry and immunocytochemical (ICC) staining. Results IHC staining revealed that Lewis antigens are mainly expressed in the luminal and glandular epithelium, IF staining further indicated the cellular localization at the apical membrane of the epithelial cells. FUTs, ST3GALs, and NEU1 located in both stromal and epithelial cells. We have found that the expression of sLeA, LeX, FUT3/4, and ST3GAL3/4 are significantly upregulated in the RM group, while FUT1 is downregulated. SLeX, LeY, ST3GAL6, and NEU1 showed no significant differences between groups. FUT3 knockdown in RL95-2 cells significantly decreased the expression of sLeA and the spheroids adhesion to endometrial monolayer. Anti-sLeA antibody can remarkably suppress both the basal and IL-1β induced adhesion of HTR-8/SVneo spheroids to RL95-2 cells monolayer. While further flow cytometry and ICC detection indicated that the treatment of RL95-2 cells with IL-1β significantly increases the surface expression of LeX, but not sLeA. Conclusions SLeA, LeX, and pertinent glycosyltransferase genes FUT1/3/4 and ST3GAL3/4 are notably dysregulated in the decidua of uRM patients. FUT3 accounts for the synthesis of sLeA in RL95-2 cells and affects the endometrial receptivity. Targeting aberrantly elevated sLeA may be a potential therapy for the inappropriate implantation in uRM.
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Affiliation(s)
- Zhi Ma
- Department of Obstetrics and Gynaecology, University Hospital, Ludwig-Maximilians-Universität Munich, Munich, Germany
| | - Huixia Yang
- Department of Obstetrics and Gynaecology, University Hospital, Ludwig-Maximilians-Universität Munich, Munich, Germany
| | - Mirjana Kessler
- Department of Obstetrics and Gynaecology, University Hospital, Ludwig-Maximilians-Universität Munich, Munich, Germany
| | - Markus Sperandio
- Biomedical Center (BMC), Institute for Cardiovascular Physiology and Pathophysiology, Walter Brendel Center for Experimental Medicine (WBex), Faculty of Medicine, Ludwig-Maximilians-Universität Munich, Munich, Germany
| | - Sven Mahner
- Department of Obstetrics and Gynaecology, University Hospital, Ludwig-Maximilians-Universität Munich, Munich, Germany
| | - Udo Jeschke
- Department of Obstetrics and Gynaecology, University Hospital, Ludwig-Maximilians-Universität Munich, Munich, Germany
- Department of Obstetrics and Gynaecology, University Hospital Augsburg, Augsburg, Germany
- *Correspondence: Udo Jeschke,
| | - Viktoria von Schönfeldt
- Department of Obstetrics and Gynaecology, University Hospital, Ludwig-Maximilians-Universität Munich, Munich, Germany
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12
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Szlasa W, Wilk K, Knecht-Gurwin K, Gurwin A, Froń A, Sauer N, Krajewski W, Saczko J, Szydełko T, Kulbacka J, Małkiewicz B. Prognostic and Therapeutic Role of CD15 and CD15s in Cancer. Cancers (Basel) 2022; 14:cancers14092203. [PMID: 35565333 PMCID: PMC9101515 DOI: 10.3390/cancers14092203] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 04/26/2022] [Accepted: 04/27/2022] [Indexed: 02/06/2023] Open
Abstract
Simple Summary CD15 (Lewis X) is a typical myeloid antigen presented in myeloid and monocytic lineages of cells. This molecule interacts with E-, L- and P-selectins, which allows for adhesion with endothelial cells. CD15 is found on various cancer cells, including renal cancer, prostate and bladder cancers, acute leukaemias, hepatocellular carcinoma, breast cancer and melanoma cells. Its high expression can serve as a prognostic marker for patients and is a potentially valuable target for immunotherapy against cancer. Blockage of the antigen’s function results in reduced metastatic potential and it may be an immunotherapeutic target. CD15s is a sialyl derivative of CD15; however, unlike the high expression of CD15, which is a prognostic factor in Hodgkin lymphoma, CD15s relates to poor prognosis for patients. CD15 is considered a marker of cancer stem cells. This review presents a comprehensive description of the prognostic role of CD15 and CD15s and their use in anticancer therapy. Abstract CD15 (Lewis X/Lex) is a fucosyl (3-fucosly-N-acetyl-lactosamine) moiety found on membrane proteins of various cancer cells. These cancers include renal cancer, prostate and bladder cancers, acute leukaemias, hepatocellular carcinoma, breast cancer and melanoma. The biological role of CD15 is interaction with E-, L- and P-selectins (adhesion molecules), allowing for adhesion with endothelial cells. In this way, cancer cells start to interact with the endothelia of blood vessels and consequently move out from the blood flow to the surrounding tissues. Blockage of the antigen’s function results in reduced metastatic potential. Moreover, the molecule may be a therapeutic target against cancer in monoclonal antibody-based therapies. CD15 may serve as a prognostic marker for patients and there are high hopes for its use in the immunotherapeutic treatment of tumours. CD15s is a sialyl derivative of CD15 that possesses its own unique characteristics. Its soluble form may act as a competitive inhibitor of the interaction of cancer cells with epithelial cells and thus disallow migration through the vessels. However, the prognostic relevance of CD15 and CD15s expression is very complex. This review presents a comprehensive description of the role of CD15 and CD15s in cancer development and metastasis and overviews its significance for clinical applications.
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Affiliation(s)
- Wojciech Szlasa
- Department of Minimally Invasive and Robotic Urology, University Center of Excellence in Urology, Wroclaw Medical University, 50-556 Wroclaw, Poland; (K.W.); (A.G.); (A.F.); (W.K.); (T.S.)
- Correspondence: (W.S.); (B.M.)
| | - Karol Wilk
- Department of Minimally Invasive and Robotic Urology, University Center of Excellence in Urology, Wroclaw Medical University, 50-556 Wroclaw, Poland; (K.W.); (A.G.); (A.F.); (W.K.); (T.S.)
| | - Klaudia Knecht-Gurwin
- Department of Dermatology, Venerology and Allergology, Faculty of Medicine, Wroclaw Medical University, 50-368 Wroclaw, Poland;
| | - Adam Gurwin
- Department of Minimally Invasive and Robotic Urology, University Center of Excellence in Urology, Wroclaw Medical University, 50-556 Wroclaw, Poland; (K.W.); (A.G.); (A.F.); (W.K.); (T.S.)
| | - Anita Froń
- Department of Minimally Invasive and Robotic Urology, University Center of Excellence in Urology, Wroclaw Medical University, 50-556 Wroclaw, Poland; (K.W.); (A.G.); (A.F.); (W.K.); (T.S.)
| | - Natalia Sauer
- Department of Drugs Form Technology, Faculty of Pharmacy, Wroclaw Medical University, 50-556 Wroclaw, Poland;
| | - Wojciech Krajewski
- Department of Minimally Invasive and Robotic Urology, University Center of Excellence in Urology, Wroclaw Medical University, 50-556 Wroclaw, Poland; (K.W.); (A.G.); (A.F.); (W.K.); (T.S.)
| | - Jolanta Saczko
- Department of Molecular and Cellular Biology, Faculty of Pharmacy, Wroclaw Medical University, 50-556 Wroclaw, Poland; (J.S.); (J.K.)
| | - Tomasz Szydełko
- Department of Minimally Invasive and Robotic Urology, University Center of Excellence in Urology, Wroclaw Medical University, 50-556 Wroclaw, Poland; (K.W.); (A.G.); (A.F.); (W.K.); (T.S.)
| | - Julita Kulbacka
- Department of Molecular and Cellular Biology, Faculty of Pharmacy, Wroclaw Medical University, 50-556 Wroclaw, Poland; (J.S.); (J.K.)
| | - Bartosz Małkiewicz
- Department of Minimally Invasive and Robotic Urology, University Center of Excellence in Urology, Wroclaw Medical University, 50-556 Wroclaw, Poland; (K.W.); (A.G.); (A.F.); (W.K.); (T.S.)
- Correspondence: (W.S.); (B.M.)
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13
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Howlader MA, Demina EP, Samarani S, Guo T, Caillon A, Ahmad A, Pshezhetsky AV, Cairo CW. The Janus-like role of neuraminidase isoenzymes in inflammation. FASEB J 2022; 36:e22285. [PMID: 35363389 PMCID: PMC9323473 DOI: 10.1096/fj.202101218r] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 02/09/2022] [Accepted: 03/17/2022] [Indexed: 01/13/2023]
Abstract
The processes of activation, extravasation, and migration of immune cells to a site are early and essential steps in the induction of an acute inflammatory response. These events are an essential part of the inflammatory cascade, which involves multiple regulatory steps. Using a murine air pouch model of inflammation with LPS as an inflammation inducer, we demonstrate that isoenzymes of the neuraminidase family (NEU1, 3, and 4) play essential roles in these processes by acting as positive or negative regulators of leukocyte infiltration. In genetically knocked‐out (KO) mice for different NEU genes (Neu1 KO, Neu3 KO, Neu4 KO, and Neu3/4 double KO mice) with LPS‐induced air pouch inflammation, leukocytes at the site of inflammation were counted, and the inflamed tissue was analyzed using immunohistochemistry. Our data show that leukocyte recruitment was decreased in NEU1‐ and NEU3‐deficient mice, while it was increased in NEU4‐deficient animals. Consistent with these results, systemic as well as pouch exudate levels of pro‐inflammatory cytokines were reduced in Neu1 and increased in Neu4 KO mice. Pharmacological inhibitors specific for NEU1, NEU3, and NEU4 isoforms also affected leukocyte recruitment. Together our data demonstrate that NEU isoenzymes have distinct—and even opposing—effects on leukocyte recruitment, and therefore warrant further investigation to determine their mechanisms and importance as regulators of the inflammatory cascade.
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Affiliation(s)
- Md Amran Howlader
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada
| | - Ekaterina P Demina
- Division of Medical Genetics, Sainte-Justine Hospital Research Center, University of Montreal, Montreal, Quebec, Canada
| | - Suzanne Samarani
- Department of Microbiology, Infectious Diseases & Immunology, Sainte-Justine Hospital Research Center, University of Montreal, Montreal, Quebec, Canada
| | - Tianlin Guo
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada
| | - Antoine Caillon
- Division of Medical Genetics, Sainte-Justine Hospital Research Center, University of Montreal, Montreal, Quebec, Canada
| | - Ali Ahmad
- Department of Microbiology, Infectious Diseases & Immunology, Sainte-Justine Hospital Research Center, University of Montreal, Montreal, Quebec, Canada
| | - Alexey V Pshezhetsky
- Division of Medical Genetics, Sainte-Justine Hospital Research Center, University of Montreal, Montreal, Quebec, Canada.,Department of Anatomy and Cell Biology, McGill University, Montreal, Quebec, Canada
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14
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Tahata S, Raymond K, Quade M, Barnes S, Boyer S, League S, Kumanovics A, Abraham R, Jacob E, Menon P, Morava E. Defining the mild variant of leukocyte adhesion deficiency type II (SLC35C1-congenital disorder of glycosylation) and response to l-fucose therapy: Insights from two new families and review of the literature. Am J Med Genet A 2022; 188:2005-2018. [PMID: 35338746 DOI: 10.1002/ajmg.a.62737] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Revised: 10/17/2021] [Accepted: 10/29/2021] [Indexed: 11/06/2022]
Abstract
Leukocyte adhesion deficiency type II (LAD II, also known as SLC35C1-congenital disorder of glycosylation) is an autosomal recessive disorder characterized by growth and cognitive impairment, peripheral neutrophilia, recurrent infections, and the Bombay blood phenotype. A subset of patients with a milder presentation has been described with short stature and developmental delay but minimal immune and hematologic features. Some patients with LAD II benefit from oral fucose therapy, though this has not been previously studied in patients with milder disease. In this study, we describe two new patients from separate families with the milder variant of LAD II and review the published literature on this rare disorder. We demonstrate improvement in speech and cognition, CD15 expression, and core fucosylation of serum glycoproteins after 27 months of oral fucose supplementation in one patient. These patients further support the stratification of this disorder into distinct subtypes, a classical severe and an attenuated variant, and provide preliminary evidence of benefit of fucose therapy in the latter group.
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Affiliation(s)
- Shawn Tahata
- Department of Clinical Genomics, Mayo Clinic, Rochester, Minnesota, USA
| | - Kimiyo Raymond
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, USA
| | - Marie Quade
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, USA
| | - Sara Barnes
- Division of Transfusion Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Suzanne Boyer
- Department of Clinical Genomics, Mayo Clinic, Rochester, Minnesota, USA
| | - Stacy League
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, USA
| | - Attila Kumanovics
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, USA
| | - Roshini Abraham
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, USA.,Department of Pathology and Laboratory Medicine, Nationwide Children's Hospital, Columbus, Ohio, USA
| | - Eapen Jacob
- Division of Transfusion Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Prem Menon
- Asthma, Allergy, and Immunology Center, Baton Rouge, Louisiana, USA
| | - Eva Morava
- Department of Clinical Genomics, Mayo Clinic, Rochester, Minnesota, USA
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15
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Howlader MA, Guo T, Cairo CW. Inhibitors of Human Neuraminidase Enzymes Block Transmigration in vitro. Front Mol Biosci 2022; 9:835757. [PMID: 35281276 PMCID: PMC8913934 DOI: 10.3389/fmolb.2022.835757] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 02/01/2022] [Indexed: 12/28/2022] Open
Abstract
Cell migration to a site of inflammation is an important step of the immune response. This process is coordinated by cytokines, receptors, and the signal processing machinery of the cell. Many cellular receptors are glycosylated, and their activity can be modulated through changes in glycan structure. Furthermore, glycosylation can be critical to the folding and trafficking of receptors. In this work, we investigated the role of native human neuraminidase enzymes (NEU) in transmigration. We used a cultured T cell line (Jurkat) and a transwell assay with fibronectin (FN) coated wells and cytokines (IL-4 and TNF-α) as chemoattractants in the bottom chamber. We observed that NEU1, NEU3, and NEU4 were positive regulators of transmigration using an siRNA knockdown. Furthermore, we found that pharmacological inhibition of these enzymes inhibited transmigration. We conclude that human NEU isoenzymes NEU1, NEU3, and NEU4 can act as positive regulators of transmigration and should be investigated as targets for anti-inflammatory strategies.
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16
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Wang Z, Zhang Z, Li Y, Sun L, Peng D, Du D, Zhang X, Han L, Zhao L, Lu L, Du H, Yuan S, Zhan M. Preclinical efficacy against acute myeloid leukaemia of SH1573, a novel mutant IDH2 inhibitor approved for clinical trials in China. Acta Pharm Sin B 2021; 11:1526-1540. [PMID: 34221866 PMCID: PMC8245910 DOI: 10.1016/j.apsb.2021.03.005] [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: 01/11/2021] [Revised: 02/02/2021] [Accepted: 02/07/2021] [Indexed: 02/04/2023] Open
Abstract
Acute myeloid leukaemia (AML) is the most common form of acute leukaemia in adults, with increasing incidence with age and a generally poor prognosis. Almost 20% of AML patients express mutant isocitrate dehydrogenase 2 (mIDH2), which leads to the accumulation of the carcinogenic metabolite 2-hydroxyglutarate (2-HG), resulting in poor prognosis. Thus, global institutions have been working to develop mIDH2 inhibitors. SH1573 is a novel mIDH2 inhibitor that we independently designed and synthesised. We have conducted a comprehensive study on its pharmacodynamics, pharmacokinetics and safety. First, SH1573 exhibited a strong selective inhibition of mIDH2 R140Q protein, which could effectively reduce the production of 2-HG in cell lines, serum and tumors of an animal model. It could also promote the differentiation of mutant AML cell lines and granulocytes in PDX models. Then, it was confirmed that SH1573 possessed characteristics of high bioavailability, good metabolic stability and wide tissue distribution. Finally, toxicological data showed that SH1573 had no effects on the respiratory system, cardiovascular system and nervous system, and was genetically safe. This research successfully promoted the approval of SH1573 for clinical trials (CTR20200247). All experiments demonstrated that, as a potential drug against mIDH2 R140Q acute myeloid leukaemia, SH1573 was effective and safe.
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Key Words
- 2-HG, 2-hydroxyglutaric acid
- 2-Hydroxyglutarate
- ADME, absorption, distribution, metabolism and excretion
- AG-221, enasidenib
- AML, acute myeloid leukemia
- AUC, area under the cure
- Acute myeloid leukaemia
- BCRP, breast cancer resistance protein
- CDX, cell-line-derived xenograft
- CYP, cytochrome P450
- Differentiation
- EPO, erythropoietin
- IC50, half maximal inhibitory concentration
- LC–MS/MS, liquid chromatography–tandem mass spectrometry
- MDR1, multidrug resistance protein 1
- Mutant isocitrate dehydrogenase 2 (mIDH2)
- OAT, organic anion transporter
- OATP, organic anion transporting polypeptide
- OCT, organ cation transporter
- PD, pharamacodynamics
- PDX, patient-derived tumor xenograft
- PK, pharmacokinetics
- Papp, apparent permeability coefficient
- Preclinical efficacy
- SH1573
- Tumor metabolism
- mIDH2 inhibitor
- mIDH2, mutant isocitrate dehydrogenase
- α-KG, α-ketoglutaric acid
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Affiliation(s)
- Zhiqiang Wang
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing 210003, China
| | - Zhibo Zhang
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing 210003, China
| | - Yong Li
- Zhuhai Interventional Medical Center, Zhuhai Precision Medical Center, Zhuhai People's Hospital, Zhuhai Hospital Affiliated with Jinan University, Jinan University, Zhuhai 519000, China
| | - Li Sun
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing 210003, China
| | - Dezhen Peng
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing 210003, China
| | - Danyu Du
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing 210003, China
| | - Xian Zhang
- Sanhome Pharmaceutical Co., Ltd., Nanjing 210000, China
| | - Luwei Han
- Sanhome Pharmaceutical Co., Ltd., Nanjing 210000, China
| | - Liwen Zhao
- Sanhome Pharmaceutical Co., Ltd., Nanjing 210000, China
| | - Ligong Lu
- Zhuhai Interventional Medical Center, Zhuhai Precision Medical Center, Zhuhai People's Hospital, Zhuhai Hospital Affiliated with Jinan University, Jinan University, Zhuhai 519000, China
| | - Hongzhi Du
- School of Pharmacy, Hubei University of Chinese Medicine, Wuhan 430065, China
- Corresponding authors.
| | - Shengtao Yuan
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing 210003, China
- Corresponding authors.
| | - Meixiao Zhan
- Zhuhai Interventional Medical Center, Zhuhai Precision Medical Center, Zhuhai People's Hospital, Zhuhai Hospital Affiliated with Jinan University, Jinan University, Zhuhai 519000, China
- Corresponding authors.
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Ma Z, Yang H, Peng L, Kuhn C, Chelariu-Raicu A, Mahner S, Jeschke U, von Schönfeldt V. Expression of the Carbohydrate Lewis Antigen, Sialyl Lewis A, Sialyl Lewis X, Lewis X, and Lewis Y in the Placental Villi of Patients With Unexplained Miscarriages. Front Immunol 2021; 12:679424. [PMID: 34135905 PMCID: PMC8202085 DOI: 10.3389/fimmu.2021.679424] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Accepted: 05/10/2021] [Indexed: 11/13/2022] Open
Abstract
Background Lewis antigens such as Sialyl Lewis A (sLeA), Sialyl Lewis X (sLeX), Lewis X (LeX), and Lewis Y (LeY) are a class of carbohydrate molecules that are known to mediate adhesion between tumor cells and endothelium by interacting with its selectin ligands. However, their potential role in miscarriage remains enigmatic. This study aims to analyze the expression pattern of sLeA, sLeX, LeX, and LeY in the placental villi tissue of patients with a medical history of unexplained miscarriages. Methods Paraffin-embedded slides originating from placental tissue were collected from patients experiencing a miscarriage early in their pregnancy (6–13 weeks). Tissues collected from spontaneous (n = 20) and recurrent (n = 15) miscarriages were analyzed using immunohistochemical and immunofluorescent staining. Specimens obtained from legally terminated normal pregnancies were considered as control group (n = 18). Assessment of villous vessel density was performed in another cohort (n = 10 each group) of gestation ages-paired placenta tissue. Protein expression was evaluated with Immunoreactive Score (IRS). Statistical analysis was performed by using Graphpad Prism 8. Results Expression of sLeA, sLeX, LeX, and LeY in the syncytiotrophoblast was significantly upregulated in the control group compared with spontaneous and recurrent miscarriage groups. However, no prominent differences between spontaneous and recurrent miscarriage groups were identified. Potential key modulators ST3GAL6 and NEU1 were found to be significantly downregulated in the recurrent miscarriage group and upregulated in the spontaneous group, respectively. Interestingly, LeX and LeY expression was also detected in the endothelial cells of villous vessels in the control group but no significant expression in miscarriage groups. Furthermore, assessment of villous vessel density using CD31 found significantly diminished vessels in all size groups of villi (small villi <200 µm, P = 0.0371; middle villi between 200 and 400 µm, P = 0.0010 and large villi >400 µm, P = 0.0003). Immunofluorescent double staining also indicated the co-localization of LeX/Y and CD31. Conclusions The expression of four mentioned carbohydrate Lewis antigens and their potential modulators, ST3GAL6 and NEU1, in the placenta of patients with miscarriages was significantly different from the normal pregnancy. For the first time, their expression pattern in the placenta was illustrated, which might shed light on a novel understanding of Lewis antigens’ role in the pathogenesis of miscarriages.
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Affiliation(s)
- Zhi Ma
- Department of Obstetrics and Gynaecology, University Hospital LMU Munich, Munich, Germany
| | - Huixia Yang
- Department of Obstetrics and Gynaecology, University Hospital LMU Munich, Munich, Germany
| | - Lin Peng
- Department of Obstetrics and Gynaecology, University Hospital LMU Munich, Munich, Germany
| | - Christina Kuhn
- Department of Obstetrics and Gynaecology, University Hospital Augsburg, Augsburg, Germany
| | - Anca Chelariu-Raicu
- Department of Obstetrics and Gynaecology, University Hospital LMU Munich, Munich, Germany
| | - Sven Mahner
- Department of Obstetrics and Gynaecology, University Hospital LMU Munich, Munich, Germany
| | - Udo Jeschke
- Department of Obstetrics and Gynaecology, University Hospital LMU Munich, Munich, Germany.,Department of Obstetrics and Gynaecology, University Hospital Augsburg, Augsburg, Germany
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Kononova S, Litvinova E, Vakhitov T, Skalinskaya M, Sitkin S. Acceptive Immunity: The Role of Fucosylated Glycans in Human Host-Microbiome Interactions. Int J Mol Sci 2021; 22:ijms22083854. [PMID: 33917768 PMCID: PMC8068183 DOI: 10.3390/ijms22083854] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 04/04/2021] [Accepted: 04/05/2021] [Indexed: 02/07/2023] Open
Abstract
The growth in the number of chronic non-communicable diseases in the second half of the past century and in the first two decades of the new century is largely due to the disruption of the relationship between the human body and its symbiotic microbiota, and not pathogens. The interaction of the human immune system with symbionts is not accompanied by inflammation, but is a physiological norm. This is achieved via microbiota control by the immune system through a complex balance of pro-inflammatory and suppressive responses, and only a disturbance of this balance can trigger pathophysiological mechanisms. This review discusses the establishment of homeostatic relationships during immune system development and intestinal bacterial colonization through the interaction of milk glycans, mucins, and secretory immunoglobulins. In particular, the role of fucose and fucosylated glycans in the mechanism of interactions between host epithelial and immune cells is discussed.
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Affiliation(s)
- Svetlana Kononova
- Department of Microbiology, State Research Institute of Highly Pure Biopreparations, 197110 St. Petersburg, Russia; (T.V.); (M.S.); (S.S.)
- Institute of Protein Research, Russian Academy of Sciences, 142290 Pushchino, Russia
- Correspondence:
| | - Ekaterina Litvinova
- Scientific-Research Institute of Neurosciences and Medicine, 630117 Novosibirsk, Russia;
- Siberian Federal Scientific Center of Agro-BioTechnologies, Russian Academy of Sciences, Krasnoobsk, 633501 Novosibirsk, Russia
| | - Timur Vakhitov
- Department of Microbiology, State Research Institute of Highly Pure Biopreparations, 197110 St. Petersburg, Russia; (T.V.); (M.S.); (S.S.)
| | - Maria Skalinskaya
- Department of Microbiology, State Research Institute of Highly Pure Biopreparations, 197110 St. Petersburg, Russia; (T.V.); (M.S.); (S.S.)
- Department of Internal Diseases, Gastroenterology and Dietetics, North-Western State Medical University Named after I.I. Mechnikov, 191015 St. Petersburg, Russia
| | - Stanislav Sitkin
- Department of Microbiology, State Research Institute of Highly Pure Biopreparations, 197110 St. Petersburg, Russia; (T.V.); (M.S.); (S.S.)
- Department of Internal Diseases, Gastroenterology and Dietetics, North-Western State Medical University Named after I.I. Mechnikov, 191015 St. Petersburg, Russia
- Institute of Perinatology and Pediatrics, Almazov National Medical Research Centre, 197341 St. Petersburg, Russia
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Pinheiro LHS, Trindade LD, Costa FDO, Silva NDL, Sandes AF, Nunes MAP, Correa CB, Almeida CAC, da Cruz GS, de Lyra Junior DP, Schimieguel DM. Aberrant Phenotypes in Acute Myeloid Leukemia and Its Relationship with Prognosis and Survival: A Systematic Review and Meta-Analysis. Int J Hematol Oncol Stem Cell Res 2020; 14:274-288. [PMID: 33603989 PMCID: PMC7876425 DOI: 10.18502/ijhoscr.v14i4.4484] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Background: The aim of this review was to evaluate the influence of aberrant phenotypes in prognosis and survival in acute myeloid leukemia (AML) patients by multiparametric flow cytometry. Materials and Methods: Following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, a review of PubMed, Scopus, Science Direct and Web of Science was carried out through 1998 to 2016, conducted by two reviewers independently, evaluating titles, abstracts and full-texts of the selected studies. Results: Ten studies were included on this review, in which the aberrant phenotype expression of 17 markers were detected in AML patients. From these, 11 aberrant phenotypes were associated with prognosis, which eight had shown negative impact on prognosis: CD7, CD56, CD15, CD2, CD3, CD90low, CD123high, CD117high, and three others were associated with good prognosis: CD19, CD98high and CD117+/CD15+. Meta-analysis showed that aberrant expression of CD56 as a poor prognostic marker with unfavorable outcomes is implicated in decreased overall survival in AML patients in 28 months (95% CI: 0.62 to 0.92). Conclusion: This was observed when there was association between CD56 expression and other prognostic factors, influencing on patients’ management care and treatment.
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Affiliation(s)
| | - Louise Dantas Trindade
- Department of Pharmacy, Laboratory of Hematology, Federal University of Sergipe, São Cristóvão, Sergipe, Brazil
| | | | - Nathanielly de Lima Silva
- Department of Pharmacy, Laboratory of Hematology, Federal University of Sergipe, São Cristóvão, Sergipe, Brazil
| | - Alex Freire Sandes
- Department of Medicine, Hematology Course, Federal University of São Paulo, São Paulo, São Paulo, Brazil
| | | | - Cristiane Bani Correa
- Department of Morphology, Federal University of Sergipe, São Cristóvão, Sergipe, Brazil
| | | | | | | | - Dulce Marta Schimieguel
- Department of Pharmacy, Laboratory of Hematology, Federal University of Sergipe, São Cristóvão, Sergipe, Brazil
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20
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Oh EJ, Bychkov A, Cho H, Kim TM, Bae JS, Lim DJ, Jung CK. Prognostic Implications of CD10 and CD15 Expression in Papillary Thyroid Carcinoma. Cancers (Basel) 2020; 12:cancers12061413. [PMID: 32486143 PMCID: PMC7352591 DOI: 10.3390/cancers12061413] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 05/28/2020] [Accepted: 05/28/2020] [Indexed: 02/07/2023] Open
Abstract
Patients with papillary thyroid carcinoma (PTC) have excellent survival, but recurrence remains a major problem in the management of PTC. We aimed to determine the prognostic impact of the expression of CD10 and CD15 in patients with PTC. Immunohistochemistry for CD10 and CD15 was performed on the tissue microarrays of 515 patients with PTC. The expression of CD10 and CD15 was detected in 201 (39.0%) and 295 (57.3%) of 515 PTC cases, respectively, but not in the adjacent benign thyroid tissue. Recurrence was inversely correlated with CD15 expression (p = 0.034) but not with CD10 expression. In 467 PTC patients treated with radioiodine remnant ablation, the CD15 expression had an adjusted hazard ratio of 0.500 (p = 0.024) for recurrence-free survival and an adjusted odds ratio of 2.678 (p = 0.015) for predicting long-term excellent therapeutic response. CD10 expression was not associated with clinical outcomes. In the Cancer Genome Atlas dataset, the expression level of FUT4 (CD15) mRNA was higher in the low/intermediate-risk group for recurrence than in the high-risk group and exhibited positive correlation with SLC5A5 (NIS) mRNA expression (p = 0.003). Taken together, CD15 expression was identified as an independent prognostic marker for improved prognosis in PTC patients.
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Affiliation(s)
- Eun Ji Oh
- Department of Hospital Pathology, College of Medicine, The Catholic University of Korea, Seoul 06591, Korea
- Cancer Research Institute, College of Medicine, The Catholic University of Korea, Seoul 06591, Korea
- Department of Pathology, Green Cross Laboratories, Yongin-si, Gyeonggi-do 16924, Korea
| | - Andrey Bychkov
- Department of Pathology, Kameda Medical Center, Kamogawa, Chiba 296-8602, Japan
- Department of Pathology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8523, Japan
| | - Haejin Cho
- Cancer Research Institute, College of Medicine, The Catholic University of Korea, Seoul 06591, Korea
- Department of Medical Informatics, College of Medicine, The Catholic University of Korea, Seoul 06591, Korea
- Department of Biomedicine & Health Sciences, Graduate School, The Catholic University of Korea, Seoul 06591, Korea
| | - Tae-Min Kim
- Cancer Research Institute, College of Medicine, The Catholic University of Korea, Seoul 06591, Korea
- Department of Medical Informatics, College of Medicine, The Catholic University of Korea, Seoul 06591, Korea
- Department of Biomedicine & Health Sciences, Graduate School, The Catholic University of Korea, Seoul 06591, Korea
| | - Ja Seong Bae
- Cancer Research Institute, College of Medicine, The Catholic University of Korea, Seoul 06591, Korea
- Department of Surgery, College of Medicine, The Catholic University of Korea, Seoul 06591, Korea
| | - Dong-Jun Lim
- Cancer Research Institute, College of Medicine, The Catholic University of Korea, Seoul 06591, Korea
- Department of Endocrinology and Metabolism, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul 06591, Korea
| | - Chan Kwon Jung
- Department of Hospital Pathology, College of Medicine, The Catholic University of Korea, Seoul 06591, Korea
- Cancer Research Institute, College of Medicine, The Catholic University of Korea, Seoul 06591, Korea
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21
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Ueda M, Stefan T, Stetson L, Ignatz-Hoover JJ, Tomlinson B, Creger RJ, Cooper B, Lazarus HM, de Lima M, Wald DN, Caimi PF. Phase I Trial of Lithium and Tretinoin for Treatment of Relapsed and Refractory Non-promyelocytic Acute Myeloid Leukemia. Front Oncol 2020; 10:327. [PMID: 32211336 PMCID: PMC7076174 DOI: 10.3389/fonc.2020.00327] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Accepted: 02/25/2020] [Indexed: 11/13/2022] Open
Abstract
Glycogen synthase kinase-3 (GSK3) inhibitors induce differentiation and growth inhibition of acute myeloid leukemia (AML) cells. Our pre-clinical studies showed GSK3 inhibition leads to sensitization of AML cells to tretinoin-mediated differentiation. We conducted a phase I trial of lithium, a GSK3 inhibitor, plus tretinoin for relapsed, refractory non-promyelocytic AML. Nine patients with median (range) age 65 (42–82) years were enrolled. All subjects had relapsed leukemia after prior therapy, with a median (range) of 3 (1–3) prior therapies. Oral lithium carbonate 300 mg was given 2–3 times daily and adjusted to meet target serum concentration (0.6 to 1.0 mmol/L); tretinoin 22.5 or 45 mg/m2/day (two equally divided doses) was administered orally on days 1–7 and 15–21 of a 28-day cycle. Four patients attained disease stability with no increase in circulating blasts for ≥4 weeks. Median (range) survival was 106 days (60–502). Target serum lithium concentration was achieved in all patients and correlated with GSK3 inhibition in leukemic cells. Immunophenotypic changes associated with myeloid differentiation were observed in five patients. The combination treatment led to a reduction in the CD34+ CD38– AML stem cell population both in vivo and in vitro. The combination of lithium and tretinoin is well-tolerated, induces differentiation of leukemic cells, and may target AML stem cells, but has limited clinical activity in the absence of other antileukemic agents. The results of this clinical trial suggest GSK3 inhibition can result in AML cell differentiation and may be a novel therapeutic strategy in this disease, particularly in combination with other antileukemic agents. Lithium is a weak GSK3 inhibitor and future strategies in AML treatment will probably require more potent agents targeting this pathway or combinations with other antileukemic agents. This trial is registered at ClinicalTrials.gov NCT01820624.
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Affiliation(s)
- Masumi Ueda
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, United States.,Department of Medicine, Division of Medical Oncology, University of Washington, Seattle, WA, United States
| | - Tammy Stefan
- Department of Pathology, Case Western Reserve University, Cleveland, OH, United States
| | - Lindsay Stetson
- Department of Pathology, Case Western Reserve University, Cleveland, OH, United States
| | - James J Ignatz-Hoover
- Department of Pathology, Case Western Reserve University, Cleveland, OH, United States
| | - Benjamin Tomlinson
- Stem Cell Transplant and Hematologic Malignancies Program, University Hospitals Seidman Cancer Center, Cleveland, OH, United States.,Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, OH, United States
| | - Richard J Creger
- Stem Cell Transplant and Hematologic Malignancies Program, University Hospitals Seidman Cancer Center, Cleveland, OH, United States.,Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, OH, United States
| | - Brenda Cooper
- Stem Cell Transplant and Hematologic Malignancies Program, University Hospitals Seidman Cancer Center, Cleveland, OH, United States.,Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, OH, United States
| | - Hillard M Lazarus
- Stem Cell Transplant and Hematologic Malignancies Program, University Hospitals Seidman Cancer Center, Cleveland, OH, United States.,Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, OH, United States
| | - Marcos de Lima
- Stem Cell Transplant and Hematologic Malignancies Program, University Hospitals Seidman Cancer Center, Cleveland, OH, United States.,Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, OH, United States
| | - David N Wald
- Department of Pathology, Case Western Reserve University, Cleveland, OH, United States.,Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, OH, United States
| | - Paolo F Caimi
- Stem Cell Transplant and Hematologic Malignancies Program, University Hospitals Seidman Cancer Center, Cleveland, OH, United States.,Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, OH, United States
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22
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Aditi P, Srivastava S, Pandey H, Tripathi YB. Toxicity profile of honey and ghee, when taken together in equal ratio. Toxicol Rep 2020; 7:624-636. [PMID: 32455119 PMCID: PMC7235625 DOI: 10.1016/j.toxrep.2020.04.002] [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: 11/09/2019] [Revised: 04/05/2020] [Accepted: 04/08/2020] [Indexed: 11/30/2022] Open
Abstract
Honey and ghee in equal ratio has always been found as an incompatible diet, if taken for long duration: mention in Charak Samhita. This has been proven by many biochemical parameters including liver function test, renal function test, oxidative stress tests, incretin hormones, DPP-4 enzyme activity as well as some protein modification test like amadori test, albumin cobalt binding assay and advanced glycation end product formation test. The liver tissue morphology alternation and inflammatory cell infiltration has been validated through H&E and immunohistochemistry.
Honey and ghee are an essential component of our diet. They play an important role like anti-inflammatory, antioxidative, antimicrobial, etc. It is written in Charak Samhita that an equal mixture of honey and ghee turn into a harmful component for health. This study was designed to explore the mechanism of toxicity through the biochemical and histological parameters in Charles foster rats (24 rats were used). We have divided these rats into four groups (n = 6) - normal, honey (0.7 ml/100 g bw), ghee (0.7 ml/100 g bw), and honey + ghee (1:1) (1.5 ml/100 g bw). Treatment was given orally for 60 days. All rats were sacrificed on 61 days. Biochemical parameters like liver function test, kidney function test, Oxidative stress, Glycemic, and some protein modification parameters were done in blood plasma. We found weight loss, hair loss, red patches on ear, and increased liver function test, oxidative stress, Amadori product formation, advanced glycation end-product formation, dipeptidyl protease (DPP-4) and decreased incretins (glucagon-like peptide-1(GLP-1) and gastric inhibitory polypeptide (GIP)) in honey + ghee group. H&E and immunohistochemistry results showed mild inflammation in liver tissue but no changes in the kidney, intestine and, pancreas. Thus it concluded that the increased formation of Amadori product, DPP-4 activity and low incretins (GLP-1, GIP) activity resulting high postprandial hyperglycemic response could be collectively responsible for oxidative stress-mediated toxicity of honey and ghee in the equal mixture.
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23
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Madadi Z, Akbari-Birgani S, Monfared PD, Mohammadi S. The non-apoptotic role of caspase-9 promotes differentiation in leukemic cells. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2019; 1866:118524. [DOI: 10.1016/j.bbamcr.2019.118524] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 07/26/2019] [Accepted: 08/04/2019] [Indexed: 12/22/2022]
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24
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Howlader MA, Li C, Zou C, Chakraberty R, Ebesoh N, Cairo CW. Neuraminidase-3 Is a Negative Regulator of LFA-1 Adhesion. Front Chem 2019; 7:791. [PMID: 31824923 PMCID: PMC6882948 DOI: 10.3389/fchem.2019.00791] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 11/04/2019] [Indexed: 01/13/2023] Open
Abstract
Within the plasma membrane environment, glycoconjugate-receptor interactions play an important role in the regulation of cell-cell interactions. We have investigated the mechanism and activity of the human neuraminidase (NEU) isoenzyme, NEU3, on T cell adhesion receptors. The enzyme is known to prefer glycolipid substrates, and we confirmed that exogenous enzyme altered the glycolipid composition of cells. NEU3 was able to modify the sialic acid content of purified LFA-1 in vitro. Enzymatic activity of NEU3 resulted in re-organization of LFA-1 into large clusters on the membrane. This change was facilitated by an increase in the lateral mobility of LFA-1 upon NEU3 treatment. Changes to the lateral mobility of LFA-1 were specific for NEU3 activity, and we observed no significant change in diffusion when cells were treated with a bacterial NEU (NanI). Furthermore, we found that NEU3 treatment of cells increased surface expression levels of LFA-1. We observed that NEU3-treated cells had suppressed LFA-1 adhesion to an ICAM-1 coated surface using an in vitro static adhesion assay. These results establish that NEU3 can modulate glycoconjugate composition and contribute to the regulation of integrin activity. We propose that NEU3 should be investigated to determine its role on LFA-1 within the inflammatory cascade.
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Affiliation(s)
- Md Amran Howlader
- Department of Chemistry, University of Alberta, Edmonton, AB, Canada
| | - Caishun Li
- Department of Chemistry, University of Alberta, Edmonton, AB, Canada
| | - Chunxia Zou
- Department of Chemistry, University of Alberta, Edmonton, AB, Canada
| | | | - Njuacha Ebesoh
- Department of Chemistry, University of Alberta, Edmonton, AB, Canada
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25
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Wei M, Wang PG. Desialylation in physiological and pathological processes: New target for diagnostic and therapeutic development. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2019; 162:25-57. [PMID: 30905454 DOI: 10.1016/bs.pmbts.2018.12.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Desialylation is a pivotal part of sialic acid metabolism, which initiates the catabolism of glycans by removing the terminal sialic acid residues on glycans, thereby modulating the structure and functions of glycans, glycoproteins, or glycolipids. The functions of sialic acids have been well recognized, whereas the function of desialylation process is underappreciated or largely ignored. However, accumulating evidence demonstrates that desialylation plays an important role in a variety of physiological and pathological processes. This chapter summarizes the current knowledge pertaining to desialylation in a variety of physiological and pathological processes, with a focus on the underlying molecular mechanisms. The potential of targeting desialylation process for diagnostic and therapeutic development is also discussed.
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Affiliation(s)
- Mohui Wei
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, United States.
| | - Peng George Wang
- Department of Chemistry, Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, GA, United States
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26
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Abstract
Myeloid-derived suppressor cells (MDSCs) are a heterogeneous population of immunosuppressive cells of the myeloid lineage upregulated by mediators of inflammation, such as IL-2, granulocyte colony-stimulating factor, and S100A8/A9. These cells have been studied extensively by tumor biologists. Because of their robust immunosuppressive potential, MDSCs have stirred recent interest among transplant immunologists as well. MDSCs inhibit T-cell responses through, among other mechanisms, the activity of arginase-1 and inducible nitric oxide synthase, and the expansion of T regulatory cells. In the context of transplantation, MDSCs have been studied in several animal models, and to a lesser degree in humans. Here, we will review the immunosuppressive qualities of this important cell type and discuss the relevant studies of MDSCs in transplantation. It may be possible to exploit the immunosuppressive capacity of MDSCs for the benefit of transplant patients.
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27
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White EJ, Gyulay G, Lhoták Š, Szewczyk MM, Chong T, Fuller MT, Dadoo O, Fox-Robichaud AE, Austin RC, Trigatti BL, Igdoura SA. Sialidase down-regulation reduces non-HDL cholesterol, inhibits leukocyte transmigration, and attenuates atherosclerosis in ApoE knockout mice. J Biol Chem 2018; 293:14689-14706. [PMID: 30097518 DOI: 10.1074/jbc.ra118.004589] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 08/01/2018] [Indexed: 01/01/2023] Open
Abstract
Atherosclerosis is a complex disease that involves alterations in lipoprotein metabolism and inflammation. Protein and lipid glycosylation events, such as sialylation, contribute to the development of atherosclerosis and are regulated by specific glycosidases, including sialidases. To evaluate the effect of the sialidase neuraminidase 1 (NEU1) on atherogenesis, here we generated apolipoprotein E (ApoE)-deficient mice that express hypomorphic levels of NEU1 (Neu1hypoApoe-/-). We found that the hypomorphic NEU1 expression in male Apoe-/- mice reduces serum levels of very-low-density lipoprotein (VLDL) and LDL cholesterol, diminishes infiltration of inflammatory cells into lesions, and decreases aortic sinus atherosclerosis. Transplantation of Apoe-/- bone marrow (BM) into Neu1hypoApoe-/- mice significantly increased atherosclerotic lesion development and had no effect on serum lipoprotein levels. Moreover, Neu1hypoApoe-/- mice exhibited a reduction in circulating monocyte and neutrophil levels and had reduced hyaluronic acid and P-selectin adhesion capability on monocytes/neutrophils and T cells. Consistent with these findings, administration of a sialidase inhibitor, 2-deoxy-2,3-dehydro-N-acetylneuraminic acid, had a significant anti-atherogenic effect in the Apoe-/- mice. In summary, the reduction in NEU1 expression or function decreases atherosclerosis in mice via its significant effects on lipid metabolism and inflammatory processes. We conclude that NEU1 may represent a promising target for managing atherosclerosis.
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Affiliation(s)
| | | | - Šárka Lhoták
- the Department of Medicine, Division of Nephrology, McMaster University, St. Joseph's Healthcare and Hamilton Centre for Kidney Research, Hamilton, Ontario L8N 4A6, Canada
| | | | | | - Mark T Fuller
- Biochemistry and Biomedical Sciences.,Thrombosis and Atherosclerosis Research Institute, McMaster University, Hamilton, Ontario L8S 4K1 and
| | - Omid Dadoo
- Biochemistry and Biomedical Sciences.,Thrombosis and Atherosclerosis Research Institute, McMaster University, Hamilton, Ontario L8S 4K1 and
| | - Alison E Fox-Robichaud
- the Department of Medicine, Division of Nephrology, McMaster University, St. Joseph's Healthcare and Hamilton Centre for Kidney Research, Hamilton, Ontario L8N 4A6, Canada.,Thrombosis and Atherosclerosis Research Institute, McMaster University, Hamilton, Ontario L8S 4K1 and
| | - Richard C Austin
- the Department of Medicine, Division of Nephrology, McMaster University, St. Joseph's Healthcare and Hamilton Centre for Kidney Research, Hamilton, Ontario L8N 4A6, Canada.,Thrombosis and Atherosclerosis Research Institute, McMaster University, Hamilton, Ontario L8S 4K1 and
| | - Bernardo L Trigatti
- Biochemistry and Biomedical Sciences.,Thrombosis and Atherosclerosis Research Institute, McMaster University, Hamilton, Ontario L8S 4K1 and
| | - Suleiman A Igdoura
- From the Departments of Biology, .,Pathology and Molecular Medicine, and
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28
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Videira PA, Silva M, Martin KC, Sackstein R. Ligation of the CD44 Glycoform HCELL on Culture-Expanded Human Monocyte-Derived Dendritic Cells Programs Transendothelial Migration. THE JOURNAL OF IMMUNOLOGY 2018; 201:1030-1043. [PMID: 29941663 DOI: 10.4049/jimmunol.1800188] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Accepted: 05/23/2018] [Indexed: 12/12/2022]
Abstract
The success of dendritic cell (DC)-based immunotherapeutics critically hinges on the capacity of the vascularly administered cells to enter tissues. Transendothelial migration (TEM) is dictated by an ordered cascade of receptor/ligand interactions. In this study, we examined the key molecular effectors of TEM of human monocyte-derived DCs (mo-DCs) generated by clinically relevant methods: CD14 selection (CD14-S) and plastic adherence selection (PA-S). Without chemokine input, CD14-S cells undergo greater TEM than PA-S cells over TNF-α-stimulated HUVECs. TEM of CD14-S mo-DCs is E-selectin/very late Ag-4 (VLA-4) dependent, and engagement of E-selectin ligands activates VLA-4 on CD14-S mo-DCs but not on PA-S mo-DCs. E-selectin binding glycoforms of P-selectin glycoprotein ligand-1 (PSGL-1) (i.e., cutaneous lymphocyte Ag [CLA]) and CD44 (i.e., hematopoietic cell E-selectin/L-selectin ligand [HCELL]) are both expressed on CD14-S mo-DCs, but only CLA is expressed on PA-S mo-DCs. To elucidate the effect of CD44 or PSGL-1 engagement, mo-DCs were pretreated with their ligands. Ligation of CD44 on CD14-S mo-DCs triggers VLA-4 activation and TEM, whereas PSGL-1 ligation does not. HCELL expression on CD14-S mo-DC can be enforced by cell surface exofucosylation, yielding increased TEM in vitro and enhanced extravasation into bone marrow in vivo. These findings highlight structural and functional pleiotropism of CD44 in priming TEM of mo-DCs and suggest that strategies to enforce HCELL expression may boost TEM of systemically administered CD14-S mo-DCs.
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Affiliation(s)
- Paula A Videira
- Unidade de Ciências Biomoleculares Aplicadas, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal.,Centro de Estudos de Doenças Crónicas, Faculdade de Ciências Médicas, Universidade NOVA de Lisboa, 1150-190 Lisbon, Portugal.,Congenital Disorders of Glycosylation and Allies-Professionals and Patient Associations International Network, 2829-516 Caparica, Portugal
| | - Mariana Silva
- Centro de Estudos de Doenças Crónicas, Faculdade de Ciências Médicas, Universidade NOVA de Lisboa, 1150-190 Lisbon, Portugal.,Department of Dermatology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115.,Program of Excellence in Glycosciences, Harvard Medical School, Boston, MA 02115; and
| | - Kyle C Martin
- Department of Dermatology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115.,Program of Excellence in Glycosciences, Harvard Medical School, Boston, MA 02115; and
| | - Robert Sackstein
- Department of Dermatology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115; .,Program of Excellence in Glycosciences, Harvard Medical School, Boston, MA 02115; and.,Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115
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29
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Galassi A, Turatello L, De Salvia A, Neri M, Turillazzi E, La Russa R, Viola RV, Frati P, Fineschi V. Septic cardiomyopathy: The value of lactoferrin and CD15 as specific markers to corroborate a definitive diagnosis. Int J Immunopathol Pharmacol 2018; 32:2058738418776526. [PMID: 29809052 PMCID: PMC5977426 DOI: 10.1177/2058738418776526] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Current scientific consensus about the physiopathology in the progression from
severe sepsis to septic shock and death focuses on myocardial contractile
dysfunction. Nevertheless, objective parameters to establish a pathological
correlate of a fatal outcome are lacking; then a cause of death due to sepsis
can remain an unsolved problem. We first reviewed all death cases recorded at
our institutions during the period from 2007 until 2015. Then, we conducted a
retrospective study of a selected autopsy series of people who had received
“sepsis” as cause of death. Two pathologists re-examined the heart sections
while the most suitable myocardial sample for each case was stained for
immunohistochemistry with antibodies targeted for specific inflammatory-related
molecules. We used specific antibodies for the following markers: alpha-smooth
muscle actin (alpha-SMA); fibronectin; matrix metallopeptidase 9 (MMP-9);
intercellular adhesion molecule 1 (ICAM-1); caspase-3; lactoferrin (LF); cluster
differentiation 15 (CD15). The statistical significance of differences was
assessed using student’s t-test for unpaired data
or non-parametric Mann–Whitney or Wilcoxon tests for skewed variables or one-way
analysis of variance and post hoc Scheffe’s test for continuous variables and
Pearson’s χ2-test for discrete
variables. Linear regression analysis was used to determine the presence of a
correlation between continuous variables. At our institutions, 2220 deaths have
been recorded during the period study. Sepsis accounted as a cause of death for
the 20% of total. We finally enrolled 56 cases; of these, only 20 were positive
for microbiological analysis. At histological examination, clear inflammation
was detectable in the 32% of cases; otherwise, immunohistochemical reaction
showed a positive reaction for LF and CD15 in more than a half cases (56%). We
still ignore all the underlying mechanisms of sepsis and all its
pathophysiological connections with cardiac metabolism; in this sense, we aim to
corroborate the diagnostic value of anti-LF and anti-CD15 staining for the
post-mortem detection of myocardial inflammation.
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Affiliation(s)
- Andrea Galassi
- 1 Unit of Legal Medicine, S. Bortolo General Hospital, Vicenza, Italy
| | - Liliana Turatello
- 1 Unit of Legal Medicine, S. Bortolo General Hospital, Vicenza, Italy
| | | | - Margherita Neri
- 2 Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
| | | | - Raffaele La Russa
- 4 Department of Anatomical, Histological, Forensic and Orthopedic Sciences, Sapienza University of Rome, Rome, Italy
| | - Rocco V Viola
- 4 Department of Anatomical, Histological, Forensic and Orthopedic Sciences, Sapienza University of Rome, Rome, Italy
| | - Paola Frati
- 4 Department of Anatomical, Histological, Forensic and Orthopedic Sciences, Sapienza University of Rome, Rome, Italy
| | - Vittorio Fineschi
- 4 Department of Anatomical, Histological, Forensic and Orthopedic Sciences, Sapienza University of Rome, Rome, Italy
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30
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Richards MR, Guo T, Hunter CD, Cairo CW. Molecular dynamics simulations of viral neuraminidase inhibitors with the human neuraminidase enzymes: Insights into isoenzyme selectivity. Bioorg Med Chem 2018; 26:5349-5358. [PMID: 29903413 DOI: 10.1016/j.bmc.2018.05.035] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Revised: 05/17/2018] [Accepted: 05/22/2018] [Indexed: 11/19/2022]
Abstract
Inhibitors of viral neuraminidase enzymes have been previously developed as therapeutics. Humans can express multiple forms of neuraminidase enzymes (NEU1, NEU2, NEU3, NEU4) that share a similar active site and enzymatic mechanism with their viral counterparts. Using a panel of purified human neuraminidase enzymes, we tested the inhibitory activity of 2-deoxy-2,3-dehydro-N-acetylneuraminic acid (DANA), zanamivir, oseltamivir, and peramivir against each of the human isoenzymes. We find that, with the exceptions of DANA and zanamivir, these compounds show generally poor activity against the human neuraminidase enzymes. To provide insight into the interactions of viral inhibitors with human neuraminidases, we conducted molecular dynamics simulations using homology models based on coordinates reported for NEU2. Simulations revealed that an organized water is displaced by zanamivir in binding to NEU2 and NEU3 and confirmed the critical importance of engaging the binding pocket of the C7-C9 glycerol sidechain. Our results suggest that compounds designed to target the human neuraminidases should provide more selective tools for interrogating these enzymes. Furthermore, they emphasize a need for additional structural data to enable structure-based drug design in these systems.
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Affiliation(s)
- Michele R Richards
- Alberta Glycomics Centre and Department of Chemistry, University of Alberta, Edmonton, AB T6G 2G2, Canada
| | - Tianlin Guo
- Alberta Glycomics Centre and Department of Chemistry, University of Alberta, Edmonton, AB T6G 2G2, Canada
| | - Carmanah D Hunter
- Alberta Glycomics Centre and Department of Chemistry, University of Alberta, Edmonton, AB T6G 2G2, Canada
| | - Christopher W Cairo
- Alberta Glycomics Centre and Department of Chemistry, University of Alberta, Edmonton, AB T6G 2G2, Canada.
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Kanai M, Akiyama M, Takahashi A, Matoba N, Momozawa Y, Ikeda M, Iwata N, Ikegawa S, Hirata M, Matsuda K, Kubo M, Okada Y, Kamatani Y. Genetic analysis of quantitative traits in the Japanese population links cell types to complex human diseases. Nat Genet 2018; 50:390-400. [PMID: 29403010 DOI: 10.1038/s41588-018-0047-6] [Citation(s) in RCA: 464] [Impact Index Per Article: 77.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Accepted: 12/21/2017] [Indexed: 12/18/2022]
Abstract
Clinical measurements can be viewed as useful intermediate phenotypes to promote understanding of complex human diseases. To acquire comprehensive insights into the underlying genetics, here we conducted a genome-wide association study (GWAS) of 58 quantitative traits in 162,255 Japanese individuals. Overall, we identified 1,407 trait-associated loci (P < 5.0 × 10-8), 679 of which were novel. By incorporating 32 additional GWAS results for complex diseases and traits in Japanese individuals, we further highlighted pleiotropy, genetic correlations, and cell-type specificity across quantitative traits and diseases, which substantially expands the current understanding of the associated genetics and biology. This study identified both shared polygenic effects and cell-type specificity, represented by the genetic links among clinical measurements, complex diseases, and relevant cell types. Our findings demonstrate that even without prior biological knowledge of cross-phenotype relationships, genetics corresponding to clinical measurements successfully recapture those measurements' relevance to diseases, and thus can contribute to the elucidation of unknown etiology and pathogenesis.
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Affiliation(s)
- Masahiro Kanai
- Department of Statistical Genetics, Osaka University Graduate School of Medicine, Osaka, Japan.,Laboratory for Statistical Analysis, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan.,Department of Biomedical Informatics, Harvard Medical School, Boston, MA, USA
| | - Masato Akiyama
- Laboratory for Statistical Analysis, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
| | - Atsushi Takahashi
- Laboratory for Statistical Analysis, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan.,Department of Genomic Medicine, Research Institute, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Nana Matoba
- Laboratory for Statistical Analysis, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
| | - Yukihide Momozawa
- Laboratory for Genotyping Development, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
| | - Masashi Ikeda
- Department of Psychiatry, Fujita Health University School of Medicine, Aichi, Japan
| | - Nakao Iwata
- Department of Psychiatry, Fujita Health University School of Medicine, Aichi, Japan
| | - Shiro Ikegawa
- Laboratory for Bone and Joint Diseases, RIKEN Center for Integrative Medical Sciences, Tokyo, Japan
| | - Makoto Hirata
- Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Koichi Matsuda
- Graduate School of Frontier Sciences, The University of Tokyo, Tokyo, Japan
| | - Michiaki Kubo
- RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
| | - Yukinori Okada
- Department of Statistical Genetics, Osaka University Graduate School of Medicine, Osaka, Japan. .,Laboratory for Statistical Analysis, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan. .,Laboratory of Statistical Immunology, Immunology Frontier Research Center (WPI-IFReC), Osaka University, Osaka, Japan.
| | - Yoichiro Kamatani
- Laboratory for Statistical Analysis, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan. .,Center for Genomic Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan.
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Mukai M, Suruga N, Saeki N, Ogawa K. EphA receptors and ephrin-A ligands are upregulated by monocytic differentiation/maturation and promote cell adhesion and protrusion formation in HL60 monocytes. BMC Cell Biol 2017; 18:28. [PMID: 28851287 PMCID: PMC5576293 DOI: 10.1186/s12860-017-0144-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Accepted: 08/15/2017] [Indexed: 01/13/2023] Open
Abstract
Background Eph signaling is known to induce contrasting cell behaviors such as promoting and inhibiting cell adhesion/spreading by altering F-actin organization and influencing integrin activities. We have previously demonstrated that EphA2 stimulation by ephrin-A1 promotes cell adhesion through interaction with integrins and integrin ligands in two monocyte/macrophage cell lines. Although mature mononuclear leukocytes express several members of the EphA/ephrin-A subclass, their expression has not been examined in monocytes undergoing during differentiation and maturation. Results Using RT-PCR, we have shown that EphA2, ephrin-A1, and ephrin-A2 expression was upregulated in murine bone marrow mononuclear cells during monocyte maturation. Moreover, EphA2 and EphA4 expression was induced, and ephrin-A4 expression was upregulated, in a human promyelocytic leukemia cell line, HL60, along with monocyte differentiation toward the classical CD14++CD16− monocyte subset. Using RT-PCR and flow cytometry, we have also shown that expression levels of αL, αM, αX, and β2 integrin subunits were upregulated in HL60 cells along with monocyte differentiation while those of α4, α5, α6, and β1 subunits were unchanged. Using a cell attachment stripe assay, we have shown that stimulation by EphA as well as ephrin-A, likely promoted adhesion to an integrin ligand-coated surface in HL60 monocytes. Moreover, EphA and ephrin-A stimulation likely promoted the formation of protrusions in HL60 monocytes. Conclusions Notably, this study is the first analysis of EphA/ephrin-A expression during monocytic differentiation/maturation and of ephrin-A stimulation affecting monocyte adhesion to an integrin ligand-coated surface. Thus, we propose that monocyte adhesion via integrin activation and the formation of protrusions is likely promoted by stimulation of EphA as well as of ephrin-A. Electronic supplementary material The online version of this article (doi:10.1186/s12860-017-0144-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Midori Mukai
- Laboratory of Veterinary Anatomy, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-58 Rinku-Ourai-Kita, Izumisano, Osaka, 598-8531, Japan
| | - Norihiko Suruga
- Laboratory of Veterinary Anatomy, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-58 Rinku-Ourai-Kita, Izumisano, Osaka, 598-8531, Japan
| | - Noritaka Saeki
- Laboratory of Veterinary Anatomy, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-58 Rinku-Ourai-Kita, Izumisano, Osaka, 598-8531, Japan
| | - Kazushige Ogawa
- Laboratory of Veterinary Anatomy, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-58 Rinku-Ourai-Kita, Izumisano, Osaka, 598-8531, Japan.
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Delannoy CP, Rombouts Y, Groux-Degroote S, Holst S, Coddeville B, Harduin-Lepers A, Wuhrer M, Elass-Rochard E, Guérardel Y. Glycosylation Changes Triggered by the Differentiation of Monocytic THP-1 Cell Line into Macrophages. J Proteome Res 2016; 16:156-169. [DOI: 10.1021/acs.jproteome.6b00161] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Clément P. Delannoy
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité
de Glycobiologie Structurale et Fonctionnelle, F 59000 Lille, France
| | - Yoann Rombouts
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité
de Glycobiologie Structurale et Fonctionnelle, F 59000 Lille, France
| | - Sophie Groux-Degroote
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité
de Glycobiologie Structurale et Fonctionnelle, F 59000 Lille, France
| | - Stephanie Holst
- Center
for Proteomics and Metabolomics, Leiden University Medical Center, 2300 RC Leiden, The Netherlands
| | - Bernadette Coddeville
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité
de Glycobiologie Structurale et Fonctionnelle, F 59000 Lille, France
| | - Anne Harduin-Lepers
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité
de Glycobiologie Structurale et Fonctionnelle, F 59000 Lille, France
| | - Manfred Wuhrer
- Center
for Proteomics and Metabolomics, Leiden University Medical Center, 2300 RC Leiden, The Netherlands
| | - Elisabeth Elass-Rochard
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité
de Glycobiologie Structurale et Fonctionnelle, F 59000 Lille, France
| | - Yann Guérardel
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité
de Glycobiologie Structurale et Fonctionnelle, F 59000 Lille, France
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Chiew MY, Boo NY, Voon K, Cheong SK, Leong PP. Generation of a MLL-AF9-specific stem cell model of acute monocytic leukemia. Leuk Lymphoma 2016; 58:162-170. [PMID: 27185517 DOI: 10.1080/10428194.2016.1180683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Acute monocytic leukemia (AML-M5), a subtype of acute myeloid leukemia (AML), affects mostly young children and has poor prognosis. The mechanisms of treatment failure of AML-M5 are still unclear. In this study, we generated iPSC from THP-1 cells from a patient with AML-M5, using retroviruses encoding the pluripotency-associated genes (OCT3/4, SOX2, KLF4 and c-MYC). These AML-M5-derived iPSC showed features similar with those of human embryonic stem cells in terms of the morphology, gene expression, protein/antigen expression and differentiation capability. Parental-specific markers were down-regulated in these AML-M5-derived iPSCs. Expression of MLL-AF9 fusion gene (previously identified to be associated with pathogenesis of AML-M5) was observed in all iPSC clones as well as parental cells. We conclude that AML-M5-specific iPSC clones have been successfully developed. This disease model may provide a novel approach for future study of pathogenesis and therapeutic intervention of AML-M5.
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Affiliation(s)
- Men Yee Chiew
- a Faculty of Medicine and Health Sciences , Universiti Tunku Abdul Rahman , Kajang , Malaysia
| | - Nem Yun Boo
- a Faculty of Medicine and Health Sciences , Universiti Tunku Abdul Rahman , Kajang , Malaysia
| | - Kenny Voon
- b Research Laboratory , International Medical University , Bukit Jalil , Malaysia
| | - Soon Keng Cheong
- a Faculty of Medicine and Health Sciences , Universiti Tunku Abdul Rahman , Kajang , Malaysia
| | - Pooi Pooi Leong
- a Faculty of Medicine and Health Sciences , Universiti Tunku Abdul Rahman , Kajang , Malaysia
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35
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Seidmann L, Anspach L, Roth W. The embryo-placental CD15-positive "vasculogenic zones" as a source of propranolol-sensitive pediatric vascular tumors. Placenta 2016; 38:93-9. [PMID: 26907387 DOI: 10.1016/j.placenta.2015.12.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Revised: 12/19/2015] [Accepted: 12/21/2015] [Indexed: 12/12/2022]
Abstract
OBJECTIVE Propranolol-induced involution is a unique biological feature of some pediatric vascular tumors, for instance infantile hemangioma (IH), cerebral cavernoma or chorioangioma. Currently, the cellular origin of these distinct tumors is unclear. In this study, we tested the hypothesis that propranolol-responsive vascular tumors are derived from common vessel-forming CD15 + progenitor cells which occur in early gestation. The aim of this study was to identify the tumor-relevant CD15 + progenitors at the early stages of embryo-placental development. MATERIALS AND METHODS Human embryo-placental units of 4-8 weeks gestation and pediatric vascular tumors were tested for expression of the tumor-relevant markers CD15, CD31 and CD34. RESULTS Placental vessel-forming progenitors were characterized by immunostaining for CD15, CD31, and CD34. In embryonic tissue, a discontinuous CD15+/CD31+/CD34 + progenitors was detected in immature vessels of the skin, neural tube, spinal and cerebral meninges. Similarly, vessels in IH and chorioangioma exhibited a co-expression of CD15, CD31, and CD34. In contrast, the majority of embryonic vessels presented a CD31+/CD34+, but CD15-negative immunophenotypic pattern. DISCUSSION Our results suggest the existence of a CD15+ "vasculogenic zones" in the embryo-placental unit as well as in IH and chorioangioma. A site-specific correlation between normal embryo-placental and tumoral vessel-forming CD15 + progenitors was demonstrated. CONCLUSION Hence, site- and stage-specific CD15 + progenitors of vascular wall could be considered as propronalol-sensitive targets and source of pre- and postnatal vascular tumors. We propose, that the CD15+ "vasculogenic zones" are a site-specific reserve of multi-lineage progenitors that could be recruited in pre- and postnatal emergency situations.
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Affiliation(s)
- L Seidmann
- Institute of Pathology, University Medical Centre of the Johannes Gutenberg University, Mainz, Germany.
| | - L Anspach
- Institute of Pathology, University Medical Centre of the Johannes Gutenberg University, Mainz, Germany
| | - W Roth
- Institute of Pathology, University Medical Centre of the Johannes Gutenberg University, Mainz, Germany
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36
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Cheng B, Xie R, Dong L, Chen X. Metabolic Remodeling of Cell-Surface Sialic Acids: Principles, Applications, and Recent Advances. Chembiochem 2015; 17:11-27. [PMID: 26573222 DOI: 10.1002/cbic.201500344] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Indexed: 12/14/2022]
Abstract
Cell-surface sialic acids are essential in mediating a variety of physiological and pathological processes. Sialic acid chemistry and biology remain challenging to investigate, demanding new tools for probing sialylation in living systems. The metabolic glycan labeling (MGL) strategy has emerged as an invaluable chemical biology tool that enables metabolic installation of useful functionalities into cell-surface sialoglycans by "hijacking" the sialic acid biosynthetic pathway. Here we review the principles of MGL and its applications in study and manipulation of sialic acid function, with an emphasis on recent advances.
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Affiliation(s)
- Bo Cheng
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Synthetic and Functional Biomolecules Center and, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, 100871, China
| | - Ran Xie
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Synthetic and Functional Biomolecules Center and, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, 100871, China
| | - Lu Dong
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Synthetic and Functional Biomolecules Center and, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, 100871, China
| | - Xing Chen
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Synthetic and Functional Biomolecules Center and, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, 100871, China.
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37
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Merzaban JS, Imitola J, Starossom SC, Zhu B, Wang Y, Lee J, Ali AJ, Olah M, Abuelela AF, Khoury SJ, Sackstein R. Cell surface glycan engineering of neural stem cells augments neurotropism and improves recovery in a murine model of multiple sclerosis. Glycobiology 2015; 25:1392-409. [PMID: 26153105 DOI: 10.1093/glycob/cwv046] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Accepted: 07/02/2015] [Indexed: 02/07/2023] Open
Abstract
Neural stem cell (NSC)-based therapies offer potential for neural repair in central nervous system (CNS) inflammatory and degenerative disorders. Typically, these conditions present with multifocal CNS lesions making it impractical to inject NSCs locally, thus mandating optimization of vascular delivery of the cells to involved sites. Here, we analyzed NSCs for expression of molecular effectors of cell migration and found that these cells are natively devoid of E-selectin ligands. Using glycosyltransferase-programmed stereosubstitution (GPS), we glycan engineered the cell surface of NSCs ("GPS-NSCs") with resultant enforced expression of the potent E-selectin ligand HCELL (hematopoietic cell E-/L-selectin ligand) and of an E-selectin-binding glycoform of neural cell adhesion molecule ("NCAM-E"). Following intravenous (i.v.) injection, short-term homing studies demonstrated that, compared with buffer-treated (control) NSCs, GPS-NSCs showed greater neurotropism. Administration of GPS-NSC significantly attenuated the clinical course of experimental autoimmune encephalomyelitis (EAE), with markedly decreased inflammation and improved oligodendroglial and axonal integrity, but without evidence of long-term stem cell engraftment. Notably, this effect of NSC is not a universal property of adult stem cells, as administration of GPS-engineered mouse hematopoietic stem/progenitor cells did not improve EAE clinical course. These findings highlight the utility of cell surface glycan engineering to boost stem cell delivery in neuroinflammatory conditions and indicate that, despite the use of a neural tissue-specific progenitor cell population, neural repair in EAE results from endogenous repair and not from direct, NSC-derived cell replacement.
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Affiliation(s)
- Jasmeen S Merzaban
- Department of Dermatology Division of Biological and Environmental Sciences and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Jaime Imitola
- Department of Neurology, Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Sarah C Starossom
- Department of Neurology, Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Bing Zhu
- Department of Neurology, Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Yue Wang
- Department of Neurology, Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | | | - Amal J Ali
- Division of Biological and Environmental Sciences and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Marta Olah
- Department of Neurology, Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Ayman F Abuelela
- Division of Biological and Environmental Sciences and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Samia J Khoury
- Department of Neurology, Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Robert Sackstein
- Department of Dermatology Department of Medicine, Harvard Skin Disease Research Center
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Zamora CY, Ryan MJ, d'Alarcao M, Kumar K. Sialidases as regulators of bioengineered cellular surfaces. Glycobiology 2015; 25:784-91. [PMID: 25795684 DOI: 10.1093/glycob/cwv019] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2014] [Accepted: 03/11/2015] [Indexed: 12/13/2022] Open
Abstract
Human sialidases (NEUs) catalyze the removal of N-acetyl neuraminic acids from the glycome of the cell and regulate a diverse repertoire of nominal cellular functions, such as cell signaling and adhesion. A greater understanding of their substrate permissivity is of interest in order to discern their physiological functions in disease states and in the design of specific and effective small molecule inhibitors. Towards this, we have synthesized soluble fluorogenic reporters of mammalian sialidase activity bearing unnatural sialic acids commonly incorporated into the cellular glycocalyx via metabolic glycoengineering. We found cell-surface sialidases in Jurkat capable of cleaving unnatural sialic acids with differential activities toward a variety of R groups on neuraminic acid. In addition, we observed modulated structure-activity relationships when cell-surface sialidases were presented glycans with unnatural bulky, hydrophobic or fluorinated moieties incorporated directly via glycoengineering. Our results confirm the importance of cell-surface sialidases in glycoengineering incorporation data. We demonstrate the flexibility of human NEUs toward derivatized sugars and highlight the importance of native glycan presentation to sialidase binding and activity. These results stand to inform not only metabolic glycoengineering efforts but also inhibitor design.
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Affiliation(s)
| | - Matthew J Ryan
- Department of Chemistry, Tufts University, Medford, MA, USA
| | - Marc d'Alarcao
- Department of Chemistry, San José State University, San José, CA, USA
| | - Krishna Kumar
- Department of Chemistry, Tufts University, Medford, MA, USA Cancer Center, Tufts Medical Center Boston, Boston, MA, USA
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Kupsa T, Horacek JM, Jebavy L. The role of adhesion molecules in acute myeloid leukemia and (hemato)oncology: A systematic review. Biomed Pap Med Fac Univ Palacky Olomouc Czech Repub 2015; 159:1-11. [DOI: 10.5507/bp.2014.049] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2014] [Accepted: 09/16/2014] [Indexed: 12/18/2022] Open
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40
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Wright RD, Cooper D. Glycobiology of leukocyte trafficking in inflammation. Glycobiology 2014; 24:1242-51. [DOI: 10.1093/glycob/cwu101] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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Fu J, Tobin MC, Thomas LL. Neutrophil-like low-density granulocytes are elevated in patients with moderate to severe persistent asthma. Ann Allergy Asthma Immunol 2014; 113:635-640.e2. [PMID: 25256681 DOI: 10.1016/j.anai.2014.08.024] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Revised: 08/25/2014] [Accepted: 08/29/2014] [Indexed: 12/19/2022]
Abstract
BACKGROUND Elevations in neutrophil-like low-density granulocytes (LDGs) are observed in association with disease severity in some autoimmune and other disorders. This study evaluated whether a similar association with disease severity is observed in asthma. OBJECTIVE To determine LDG levels in peripheral blood mononuclear cells of subjects with intermittent or mild persistent asthma, subjects with moderate persistent or severe persistent (SP) asthma, and control subjects without a history or allergy or asthma. METHODS A brief medical history and physical examination, spirometry, and measurement of fraction of exhaled nitric oxide were performed. The LDGs were quantified by polychromatic flow cytometry. RESULTS The LDGs displaying the same phenotype as those described previously for LDGs in other diseases were significantly elevated in peripheral blood mononuclear cells of subjects with moderate persistent or SP asthma. The LDGs comprised up to 39% of peripheral blood mononuclear cells, with elevated LDG levels most prevalent in subjects with SP asthma. The highest LDG levels were observed in 4 subjects with SP asthma. Fraction of exhaled nitric oxide levels and body mass were significantly increased in subjects with low LDG levels compared with control subjects, whereas fraction of exhaled nitric oxide levels and body mass were not elevated in subjects with moderate persistent or SP asthma and high LDG levels compared with control subjects. CONCLUSION These findings identify a previously unrecognized association between LDG levels and asthma severity. Identification of the factor(s) responsible for the increased LDG levels in moderate persistent or SP asthma may provide a serum biomarker to aid in the identification of neutrophil-associated phenotypes of severe asthma.
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Affiliation(s)
- Jun Fu
- Department of Immunology/Microbiology, Section of Allergy and Clinical Immunology, Rush University Medical Center, Chicago, Illinois
| | - Mary C Tobin
- Department of Immunology/Microbiology, Section of Allergy and Clinical Immunology, Rush University Medical Center, Chicago, Illinois
| | - Larry L Thomas
- Department of Immunology/Microbiology, Section of Allergy and Clinical Immunology, Rush University Medical Center, Chicago, Illinois.
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Seidmann L, Suhan T, Kamyshanskiy Y, Nevmerzhitskaya A, Gerein V, Kirkpatrick CJ. CD15 - a new marker of pathological villous immaturity of the term placenta. Placenta 2014; 35:925-31. [PMID: 25149387 DOI: 10.1016/j.placenta.2014.07.018] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2014] [Revised: 07/10/2014] [Accepted: 07/31/2014] [Indexed: 01/17/2023]
Abstract
INTRODUCTION Idiopathic immaturity is one of the main reasons for latent placental insufficiency and antenatal hypoxia. Postnatal identification of the immature placental phenotype may help early stratification of a heterogeneous population of newborns and individually identify risk of disease in the immediate postnatal life. The aim of the study was to determine the relevant diagnostic markers associated with pathological placental immaturity. METHODS 111 tissue samples from normal and pathological term placentas with persisting villous immaturity comprised the comparative immunohistochemical study (CD15, CD34). Positive immunohistochemical reactions were quantitatively assessed in the chorionic plate and vessels of the villi of different histological type. RESULTS We have shown that pathological villous immaturity is attended by significantly increased CD15-expression in the macro- and microvascular endothelium compared with the normal placenta. CD34-expression was not different from that in normal placentas. DISCUSSION This paper documents the correlation of CD15+ endothelium in the macrovascular fetoplacental vessels with a severe form of villous immaturity associated with fetal hypoxia/asphyxia and erythroblastosis. Increased CD15-expression only in the microvascular segment of the fetoplacental vessels correlated with moderate villous immaturity and was associated with GDM, idiopathic fetal macrosomia and nonspecific chronic villitis. CONCLUSION We propose that "immature" CD15+ endothelium is an important diagnostic marker of persisting villous immaturity and chronic placental dysfunction. The level of CD15 expression in the macro- and microvasculature reflects the degree of pathological placental villous immaturity.
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Affiliation(s)
- L Seidmann
- Institute of Pathology, University Medical Centre of the Johannes Gutenberg University, Mainz, Germany.
| | - T Suhan
- Institute of Pathology, University Medical Centre of the Johannes Gutenberg University, Mainz, Germany
| | - Y Kamyshanskiy
- Institute of Pathology, University Medical Centre of the Johannes Gutenberg University, Mainz, Germany
| | - A Nevmerzhitskaya
- Institute of Pathology, University Medical Centre of the Johannes Gutenberg University, Mainz, Germany
| | - V Gerein
- Institute of Pathology, University Medical Centre of the Johannes Gutenberg University, Mainz, Germany
| | - C J Kirkpatrick
- Institute of Pathology, University Medical Centre of the Johannes Gutenberg University, Mainz, Germany
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Røge R, Nielsen S, Vyberg M. Carb-3 Is the Superior Anti-CD15 Monoclonal Antibody for Immunohistochemistry. Appl Immunohistochem Mol Morphol 2014; 22:449-58. [DOI: 10.1097/pai.0b013e318292b764] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Pshezhetsky AV, Ashmarina LI. Desialylation of surface receptors as a new dimension in cell signaling. BIOCHEMISTRY (MOSCOW) 2014; 78:736-45. [PMID: 24010837 DOI: 10.1134/s0006297913070067] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Terminal sialic acid residues are found in abundance in glycan chains of glycoproteins and glycolipids on the surface of all live cells forming an outer layer of the cell originally known as glycocalyx. Their presence affects the molecular properties and structure of glycoconjugates, modifying their function and interactions with other molecules. Consequently, the sialylation state of glycoproteins and glycolipids has been recognized as a critical factor modulating molecular recognitions inside the cell, between the cells, between the cells and the extracellular matrix, and between the cells and certain exogenous pathogens. Until recently sialyltransferases that catalyze transfer of sialic acid residues to the glycan chains in the process of their biosynthesis were thought to be mainly responsible for the creation and maintenance of a temporal and spatial diversity of sialylated moieties. However, the growing evidence suggests that in mammalian cells, at least equally important roles belong to sialidases/neuraminidases, which are located on the cell surface and in intracellular compartments, and may either initiate the catabolism of sialoglycoconjugates or just cleave their sialic acid residues, and thereby contribute to temporal changes in their structure and functions. The current review summarizes emerging data demonstrating that mammalian neuraminidase 1, well known for its lysosomal catabolic function, is also targeted to the cell surface and assumes the previously unrecognized role as a structural and functional modulator of cellular receptors.
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Affiliation(s)
- A V Pshezhetsky
- Department of Medical Genetics, CHU Sainte-Justine Research Center, Montreal, Qc, H3T1C5, Canada.
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Abstract
A review of known small molecule inhibitors and substrates of the human neuraminidase enzymes.
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Affiliation(s)
- Christopher W. Cairo
- Alberta Glycomics Centre
- Department of Chemistry
- University of Alberta
- Edmonton Alberta
- Canada
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Albohy A, Zhang Y, Smutova V, Pshezhetsky AV, Cairo CW. Identification of Selective Nanomolar Inhibitors of the Human Neuraminidase, NEU4. ACS Med Chem Lett 2013; 4:532-7. [PMID: 24900705 DOI: 10.1021/ml400080t] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2013] [Accepted: 04/26/2013] [Indexed: 12/31/2022] Open
Abstract
The human neuraminidase enzymes (hNEU) play important roles in human physiology and pathology. The lack of potent and selective inhibitors toward these enzymes has limited our understanding of their function and the development of therapeutic applications. Here we report the evaluation of a panel of compounds against the four human neuraminidase isoenzymes. Among the compounds tested, we identified the first selective, nanomolar inhibitors of the human neuraminidase 4 enzyme (NEU4). The most potent NEU4 inhibitor (5-acetamido-9-[4-hydroxymethyl[1,2,3]triazol-1-yl]-2,3,5,9-tetradeoxy-d-glycero-d-galacto-2-nonulopyranosonic acid) was found to have an inhibitory constant (K i ) of 30 ± 19 nM and was 500-fold selective for its target over the other hNEU isoenzymes tested in vitro (NEU1, NEU2, and NEU3). This is the first report of any inhibitor of hNEU with nanomolar potency, and this confirms that the 2,3-didehydro-2-deoxy-N-acetylneuraminic acid (DANA) scaffold can be exploited to develop new, potent, and selective inhibitors that target this important family of human enzymes.
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Affiliation(s)
- Amgad Albohy
- Alberta Glycomics
Center, Department
of Chemistry, University of Alberta, Edmonton
Alberta T6G 2G2, Canada
| | - Yi Zhang
- Alberta Glycomics
Center, Department
of Chemistry, University of Alberta, Edmonton
Alberta T6G 2G2, Canada
| | - Victoria Smutova
- Division of Medical Genetics,
Centre Hospitaliere Universitaire Sainte-Justine, University of Montreal, Montreal, Quebec, Canada, and Department
of Anatomy and Cell Biology, Faculty of Medicine, McGill University, Montreal, Quebec, Canada
| | - Alexey V. Pshezhetsky
- Division of Medical Genetics,
Centre Hospitaliere Universitaire Sainte-Justine, University of Montreal, Montreal, Quebec, Canada, and Department
of Anatomy and Cell Biology, Faculty of Medicine, McGill University, Montreal, Quebec, Canada
| | - Christopher W. Cairo
- Alberta Glycomics
Center, Department
of Chemistry, University of Alberta, Edmonton
Alberta T6G 2G2, Canada
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Fluorogenic sialic acid glycosides for quantification of sialidase activity upon unnatural substrates. Bioorg Med Chem Lett 2013; 23:3406-10. [PMID: 23639536 DOI: 10.1016/j.bmcl.2013.03.076] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Revised: 03/13/2013] [Accepted: 03/20/2013] [Indexed: 11/23/2022]
Abstract
Herein we report the synthesis of N-acetyl neuraminic acid derivatives as 4-methylumbelliferyl glycosides and their use in fluorometrically quantifying human and bacterial sialidase activity and substrate specificities. We found that sialidases in the human promyelocytic leukemic cell line HL60 were able to cleave sialic acid substrates with fluorinated C-5 modifications, in some cases to a greater degree than the natural N-acetyl functionality. Human sialidases isoforms were also able to cleave unnatural substrates with bulky and hydrophobic C-5 modifications. In contrast, we found that a bacterial sialidase isolated from Clostridium perfringens to be less tolerant of sialic acid derivatization at this position, with virtually no cleavage of these glycosides observed. From our results, we conclude that human sialidase activity is a significant factor in sialic acid metabolic glycoengineering efforts utilizing unnatural sialic acid derivatives. Our fluorogenic probes have enabled further understanding of the activities and substrate specificities of human sialidases in a cellular context.
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Yu M, Henning R, Walker A, Kim G, Perroy A, Alessandro R, Virador V, Kohn EC. L-asparaginase inhibits invasive and angiogenic activity and induces autophagy in ovarian cancer. J Cell Mol Med 2013; 16:2369-78. [PMID: 22333033 PMCID: PMC3416969 DOI: 10.1111/j.1582-4934.2012.01547.x] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Recent work identified L-asparaginase (L-ASP) as a putative therapeutic target for ovarian cancer. We suggest that L-ASP, a dysregulator of glycosylation, would interrupt the local microenvironment, affecting the ovarian cancer cell-endothelial cell interaction and thus angiogenesis without cytotoxic effects. Ovarian cancer cell lines and human microvascular endothelial cells (HMVEC) were exposed to L-ASP at physiologically attainable concentrations and subjected to analyses of endothelial tube formation, invasion, adhesion and the assessment of sialylated proteins involved in matrix-associated and heterotypic cell adhesion. Marked reduction in HMVEC tube formation in vitro, HMVEC and ovarian cancer cell invasion, and heterotypic cell-cell and cell-matrix adhesion was observed (P < 0.05-0.0001). These effects were associated with reduced binding to ß1integrin, activation of FAK, and cell surface sialyl Lewis(X) (sLe(x)) expression. No reduction in HMVEC E-selectin expression was seen consistent with the unidirectional inhibitory actions observed. L-ASP concentrations were non-toxic to either ovarian cancer or HMVEC lines in the time frame of the assays. However, early changes of autophagy were observed in both cell types with induction of ATG12, beclin-1, and cleavage of LC-3, indicating cell injury did occur. These data and the known mechanism of action of L-ASP on glycosylation of nascent proteins suggest that L-ASP reduces of ovarian cancer dissemination and progression through modification of its microenvironment. The reduction of ovarian cancer cell surface sLe(x) inhibits interaction with HMVEC and thus HMVEC differentiation into tubes, inhibits interaction with the local matrix reducing invasive behaviour, and causes cell injury initiating autophagy in tumour and vascular cells.
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Affiliation(s)
- Minshu Yu
- Molecular Signaling Section, Medical Oncology Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
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Lessons from the embryonic neural stem cell niche for neural lineage differentiation of pluripotent stem cells. Stem Cell Rev Rep 2012; 8:813-29. [PMID: 22628111 PMCID: PMC3412081 DOI: 10.1007/s12015-012-9381-8] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Pluripotent stem cells offer an abundant and malleable source for the generation of differentiated cells for transplantation as well as for in vitro screens. Patterning and differentiation protocols have been developed to generate neural progeny from human embryonic or induced pluripotent stem cells. However, continued refinement is required to enhance efficiency and to prevent the generation of unwanted cell types. We summarize and interpret insights gained from studies of embryonic neuroepithelium. A multitude of factors including soluble molecules, interactions with the extracellular matrix and neighboring cells cooperate to control neural stem cell self-renewal versus differentiation. Applying these findings and concepts to human stem cell systems in vitro may yield more appropriately patterned cell types for biomedical applications.
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Zandberg WF, Kumarasamy J, Pinto BM, Vocadlo DJ. Metabolic inhibition of sialyl-Lewis X biosynthesis by 5-thiofucose remodels the cell surface and impairs selectin-mediated cell adhesion. J Biol Chem 2012; 287:40021-30. [PMID: 23019334 DOI: 10.1074/jbc.m112.403568] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Sialyl-Lewis X (sLe(X)) is a tetrasaccharide that serves as a ligand for the set of cell adhesion proteins known as selectins. This interaction enables adhesion of leukocytes and cancer cells to endothelial cells within capillaries, resulting in their extravasation into tissues. The last step in sLe(X) biosynthesis is the α1,3-fucosyltrasferase (FUT)-catalyzed transfer of an L-fucose residue to carbohydrate acceptors. Impairing FUT activity compromises leukocyte homing to sites of inflammation and renders cancer cells less malignant. Inhibition of FUTs is, consequently, of great interest, but efforts to generate glycosyltransferase inhibitors, including FUT inhibitors, has proven challenging. Here we describe a metabolic engineering strategy to inhibit the biosynthesis of sLe(X) in cancer cells using peracetylated 5-thio-L-fucose (5T-Fuc). We show that 5T-Fuc is taken up by cancer cells and then converted into a sugar nucleotide analog, GDP-5T-Fuc, that blocks FUT activity and limits sLe(X) presentation on HepG2 cells with an EC(50) in the low micromolar range. GDP-5T-Fuc itself does not get transferred by either FUT3 or FUT7 at a measurable rate. We further demonstrate that treatment of cells with 5T-Fuc impaired their adhesive properties to immobilized adhesion molecules and human endothelial cells. 5T-Fuc, therefore, is a useful probe that can be used to modulate sLe(X) levels in cells to evaluate the consequences of inhibiting FUT-mediated sLe(X) formation. These data also reveal the utility of using sugar analogues that lead to formation of donor substrate analogues within cells as a general approach to blocking glycosyltransferases in cells.
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Affiliation(s)
- Wesley F Zandberg
- Department of Chemistry, Simon Fraser University, 8888 University Dr., Burnaby V5A 1S6, Canada
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