1
|
Schwarz LW, Love JE, Naresh KN, Shameli A, Fromm JR. Use of CD32, CD44 and CD71 to differentiate follicular lymphoma and diffuse large B-cell lymphoma subtypes by flow cytometry. J Clin Pathol 2024:jcp-2023-209366. [PMID: 38336474 DOI: 10.1136/jcp-2023-209366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Accepted: 01/31/2024] [Indexed: 02/12/2024]
Affiliation(s)
- Lukas W Schwarz
- University of Washington School of Medicine, Seattle, Washington, USA
| | - Jason E Love
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington, USA
| | - Kikkeri N Naresh
- Pathology / Cancer Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | - Afshin Shameli
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington, USA
| | - Jonathan R Fromm
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington, USA
| |
Collapse
|
2
|
Shameli A, Dharmani-Khan P, Auer I, Shabani-Rad MT. Deep immunophenotypic analysis of the bone marrow progenitor cells in myelodysplastic syndromes. Leuk Res 2023; 134:107401. [PMID: 37774446 DOI: 10.1016/j.leukres.2023.107401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 08/23/2023] [Accepted: 09/22/2023] [Indexed: 10/01/2023]
Abstract
BACKGROUND Diagnosis of myelodysplastic syndromes (MDS) is often challenging and requires integration of clinical, morphologic, cytogenetics and molecular information. Flow cytometry immunophenotyping (FCIP) can support the diagnosis by demonstration of numerical and immunophenotypic abnormalities of progenitor and maturing myelomonocytic and erythroid populations. We have previously shown that comprehensive immunophenotypic analysis of the progenitor population is valuable in the diagnosis of MDS and myelodysplastic/myeloproliferative neoplasms (MDS/MPN). This study was designed to improve the analysis method and confirm its value in a larger cohort of patients. METHODS FCIP of bone marrow samples from 105 patients with cytopenia(s) (with or without leukocytosis) and clinical concern for MDS or MDS/MPN was performed using a single-tube/10-color/13-marker assay. A modified analysis approach was used to obtain 11 progenitor parameters and 2 myelomonocytic parameters. RESULTS Significantly higher number of abnormalities were identified in MDS and MDS/MPN cases when compared to cytopenic patients not meeting the diagnostic criteria for MDS (Non-MDS). A FCIP score that combined the 13 parameters showed a sensitivity of 89.8% and specificity of 93.5% for the diagnosis of MDS and MDS/MPN. The sensitivity was 100% for both MDS/MPN and higher-risk MDS, and 81.3% for lower-risk MDS. CONCLUSION This study confirms that detailed immunophenotypic analysis of the progenitor population is powerful in the diagnosis of MDS and MDS/MPN. The combination of markers used in the panel allowed for evaluation of two relatively new parameters, namely myeloid progenitor heterogeneity and stem cell aberrancy, which improved the sensitivity of the assay for lower-risk MDS.
Collapse
Affiliation(s)
- Afshin Shameli
- Department of Laboratory Medicine and Pathology, University of Washington, WA, United States.
| | - Poonam Dharmani-Khan
- Division of Hematopathology, Alberta Precision Laboratories, South Zone, and Department of Pathology and Laboratory Medicine, University of Calgary, Calgary, AB, Canada
| | - Iwona Auer
- Division of Hematopathology, Alberta Precision Laboratories, South Zone, and Department of Pathology and Laboratory Medicine, University of Calgary, Calgary, AB, Canada
| | - Meer-Taher Shabani-Rad
- Division of Hematopathology, Alberta Precision Laboratories, South Zone, and Department of Pathology and Laboratory Medicine, University of Calgary, Calgary, AB, Canada
| |
Collapse
|
3
|
Srinivasan C, Shameli A, Ritchie B, Adatia A. Investigation of a synonymous mutation in Btk in a patient with agammaglobulinemia: A case report. Immun Inflamm Dis 2023; 11:e1049. [PMID: 37904676 PMCID: PMC10587732 DOI: 10.1002/iid3.1049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 09/24/2023] [Accepted: 09/28/2023] [Indexed: 11/01/2023] Open
Abstract
BACKGROUND X-linked agammaglobulinemia (XLA) is the most common form of agammaglobulinemia and is caused by mutations in Btk, which encodes Bruton tyrosine kinase (BTK). CASE DESCRIPTION We describe a 36-year-old male who presented as an infant with hypogammaglobulinemia and sinopulmonary infections and was initially diagnosed with common variable immunodeficiency. Genetic testing showed he was hemizygous for Btk c.240G > A. This synonymous variant affecting the last nucleotide of exon 3 leads to aberrant splicing of most but not all mRNA transcripts. CONCLUSION We demonstrated reduced BTK protein expression confirming the pathogenicity of the variant and related our findings to genotype-phenotype relationship studies ina XLA caused by synonymous mutations.
Collapse
Affiliation(s)
- Cindy Srinivasan
- Student, Department of MedicineUniversity of AlbertaEdmontonAlbertaCanada
| | - Afshin Shameli
- Alberta Precision Laboratories, Calgary, Alberta, and Department of Laboratory Medicine and PathologyUniversity of WashingtonSeattleWashingtonUSA
| | - Bruce Ritchie
- Division of HematologyUniversity of AlbertaEdmontonAlbertaCanada
| | - Adil Adatia
- Department of Medicine, Division of Pulmonary MedicineUniversity of AlbertaEdmontonAlbertaCanada
| |
Collapse
|
4
|
Kuzyk A, Shameli A, Street L, Hardin J. Sezary syndrome, thyroid carcinoma, and renal carcinoma in a patient with Poland syndrome. JAAD Case Rep 2022; 29:51-54. [PMID: 36193243 PMCID: PMC9525729 DOI: 10.1016/j.jdcr.2021.10.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Affiliation(s)
- Alexandra Kuzyk
- Division of Dermatology, Department of Medicine, University of Calgary, Calgary, Canada
| | - Afshin Shameli
- Division of Hematology, Alberta Precision Laboratories, South Zone & Department of Pathology & Laboratory Medicine, University of Calgary, Calgary, Canada
| | - Lesley Street
- Section of Hematology and Hematological Malignancies, Department of Medicine, University of Calgary, Calgary, Canada
| | - Jori Hardin
- Division of Dermatology, Department of Medicine, University of Calgary, Calgary, Canada
- Correspondence to: Jori Hardin, MD, FRCPC, University of Calgary, Faculty of Medicine: University of Calgary, Cumming School, 1820 Richmond Rd SW, Calgary, Alberta T2T 5C7, Canada.
| |
Collapse
|
5
|
Shameli A, Roshan TM. CD200 expression on Sezary cells: A valuable tool for flow cytometric assessment of peripheral blood T-cell neoplasms. Cytometry B Clin Cytom 2022; 102:303-311. [PMID: 35661398 DOI: 10.1002/cyto.b.22080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Revised: 05/01/2022] [Accepted: 05/23/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND CD200 (OX-2) is a valuable marker in the diagnosis of B-cell neoplasms and is commonly used in the screening panels for assessment of peripheral blood B-cell lymphoproliferative disorders. However, there is limited understanding about CD200 expression in T-cell neoplasms. A previous study has shown that CD200 is expressed on the neoplastic cells of angioimmunoblastic T-cell lymphoma (AITL) by immunohistochemistry, but no study has evaluated CD200 expression in T-cell neoplasms by flow cytometry. METHODS We assessed CD200 expression in peripheral blood T-cell lymphoproliferative disorders by retrospective analysis of our institutional flow cytometry screening database over a 6-year period. RESULTS In addition to AITL, we identified CD200 expression in a significant number of mycosis fungoides/Sezary syndrome cases (58%, 19 of 33 samples), while most other T-cell neoplasms were negative for CD200. These findings were confirmed by CD200 immunohistochemical staining of tissue specimens from our patient cohort. CONCLUSIONS CD200 is commonly expressed on circulating Sezary cells, a feature that can potentially improve the diagnostic value of flow cytometry for assessment of T-cell neoplasms.
Collapse
Affiliation(s)
- Afshin Shameli
- Division of Hematopathology, Alberta Precision Laboratories, South Zone and Department of Pathology and Laboratory Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Tariq M Roshan
- Division of Hematopathology, Alberta Precision Laboratories, South Zone and Department of Pathology and Laboratory Medicine, University of Calgary, Calgary, Alberta, Canada
| |
Collapse
|
6
|
Amir Ali A, Shameli A, Zhang C, Gniadecki R, Street L, Hardin J. Intertriginous mycosis fungoides with T follicular helper cell phenotype progressing to Sézary syndrome. Clin Exp Dermatol 2021; 47:751-753. [PMID: 34798679 DOI: 10.1111/ced.15022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 10/24/2021] [Accepted: 11/16/2021] [Indexed: 11/27/2022]
Abstract
This case report highlights the challenges in diagnosis and therapeutic options for an individual who initially presented with intertriginous mycosis fungoides with a T follicular helper cell phenotype, which later evolved to Sézary syndrome.
Collapse
Affiliation(s)
- A Amir Ali
- Division of Dermatology, Department of Medicine, University of Calgary, Calgary, AB, Canada
| | - A Shameli
- Division of Hematology, Alberta Precision Laboratories, South Zone and Department of Pathology and Laboratory Medicine, University of Calgary, Calgary, AB, Canada
| | - C Zhang
- Division of Dermatology, Department of Medicine, University of Calgary, Calgary, AB, Canada
| | - R Gniadecki
- Division of Dermatology, Department of Medicine, University of Alberta, Edmonton, AB, Canada
| | - L Street
- Division of Hematology, Department of Medicine, University of Calgary, Calgary, AB, Canada
| | - J Hardin
- Division of Dermatology, Department of Medicine, University of Calgary, Calgary, AB, Canada
| |
Collapse
|
7
|
Shameli A, Dharmani-Khan P, Luider J, Auer I, Shabani-Rad MT. Exploring blast composition in myelodysplastic syndromes and myelodysplastic/myeloproliferative neoplasms: CD45RA and CD371 improve diagnostic value of flow cytometry through assessment of myeloblast heterogeneity and stem cell aberrancy. Cytometry B Clin Cytom 2020; 100:574-589. [PMID: 33369070 PMCID: PMC8519034 DOI: 10.1002/cyto.b.21983] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Revised: 11/07/2020] [Accepted: 12/15/2020] [Indexed: 12/12/2022]
Abstract
Background Flow cytometry immunophenotyping (FCIP) can improve diagnosis of myelodysplastic syndromes (MDS) and myelodysplastic/myeloproliferative neoplasms (MDS/MPN), although its application is challenging due to difficulties in standardization, complexity of antibody panels and subjective interpretation of data. Since blasts are invariably affected in these disorders, we developed a FCIP approach for detailed and objective analysis of the blast population. Methods FCIP using a one‐tube 10‐color (13‐marker) antibody panel was performed on bone marrow samples from 23 MDS and 8 MDS/MPN patients, 21 cytopenic patients non‐diagnostic for MDS (Non‐MDS), and 16 Control samples. Results MDS and MDS/MPN cases demonstrated one to several immunophenotypic abnormalities including: increased myeloblasts, decreased stage‐1 hematogones, aberrant stem cells, abnormal myeloblast heterogeneity/divergence from normal, increased or decreased CD45 intensity, increased CD117 or CD123 intensity, decreased CD38 intensity, and aberrant expression of lineage markers (CD5, CD19, CD56). A Blast score was developed that showed sensitivity of 80.6% and specificity of 90.5% for immunophenotypic diagnosis of MDS and MDS/MPN. Expression levels of CD45RA and CD371 were used to evaluate abnormal myeloblast heterogeneity and stem cell aberrancy. Both these features were, for the first time, incorporated into a scoring system and resulted in 19% increase in the sensitivity of the assay for lower‐risk MDS. Conclusion Deep immunophenotypic analysis of the blast population is valuable for diagnosis of MDS and MDS/MPN and can potentially provide sensitivity and specificity figures comparable to those previously described using more comprehensive panels that assess maturing myelomonocytic and erythroid elements in addition to progenitor cells.
Collapse
Affiliation(s)
- Afshin Shameli
- Division of Hematology, Alberta Precision Laboratories, South Zone, Department of Pathology & Laboratory Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Poonam Dharmani-Khan
- Division of Hematology, Alberta Precision Laboratories, South Zone, Department of Pathology & Laboratory Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Joanne Luider
- Division of Hematology, Alberta Precision Laboratories, South Zone, Department of Pathology & Laboratory Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Iwona Auer
- Division of Hematology, Alberta Precision Laboratories, South Zone, Department of Pathology & Laboratory Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Meer-Taher Shabani-Rad
- Division of Hematology, Alberta Precision Laboratories, South Zone, Department of Pathology & Laboratory Medicine, University of Calgary, Calgary, Alberta, Canada
| |
Collapse
|
8
|
Shameli A, Jamani K. Acute promyelocytic leukemia presenting with atypical basophils. Clin Case Rep 2020; 8:584-585. [PMID: 32185069 PMCID: PMC7069876 DOI: 10.1002/ccr3.2686] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 12/05/2019] [Accepted: 01/02/2020] [Indexed: 11/25/2022] Open
Abstract
We describe a case of acute promyelocytic leukemia with circulating aberrant basophils. Recent studies have shown that basophilic differentiation is not uncommon in APL and likely under-recognized in morphologic and immunophenotypic assessments.
Collapse
Affiliation(s)
- Afshin Shameli
- Division of HematologyAlberta Precision Laboratories, and Department of Pathology and Laboratory MedicineUniversity of CalgaryCalgaryABCanada
| | - Kareem Jamani
- Division of Hematology and Hematological MalignanciesDepartment of MedicineUniversity of CalgaryCalgaryABCanada
| |
Collapse
|
9
|
Jiang XY, Luider J, Shameli A. Artifactual Kappa Light Chain Restriction of Marrow Hematogones: A Potential Diagnostic Pitfall in Minimal Residual Disease Assessment of Plasma Cell Myeloma Patients on Daratumumab. Cytometry 2019; 98:68-74. [DOI: 10.1002/cyto.b.21837] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 06/10/2019] [Accepted: 06/27/2019] [Indexed: 01/02/2023]
Affiliation(s)
- Xiu yan Jiang
- Division of Hematology, Alberta Public Laboratories & Department of Pathology & Laboratory MedicineUniversity of Calgary Calgary Alberta Canada
| | - Joanne Luider
- Division of Hematology, Alberta Public Laboratories & Department of Pathology & Laboratory MedicineUniversity of Calgary Calgary Alberta Canada
| | - Afshin Shameli
- Division of Hematology, Alberta Public Laboratories & Department of Pathology & Laboratory MedicineUniversity of Calgary Calgary Alberta Canada
| |
Collapse
|
10
|
Arshadi M, Zandi H, Akbari J, Shameli A. Ferrocene functionalized nanoscale mixed-oxides as a potent phosphate adsorbent from the synthetic and real ( Persian Gulf ) waters. J Colloid Interface Sci 2015; 450:424-433. [DOI: 10.1016/j.jcis.2015.03.026] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2015] [Accepted: 03/11/2015] [Indexed: 10/23/2022]
|
11
|
Wang J, Nanjundappa RH, Shameli A, Clemente-Casares X, Yamanouchi J, Elliott JF, Slattery R, Serra P, Santamaria P. The cross-priming capacity and direct presentation potential of an autoantigen are separable and inversely related properties. J Immunol 2014; 193:3296-307. [PMID: 25165150 DOI: 10.4049/jimmunol.1401001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
We investigated whether a prevalent epitope of the β-cell-specific autoantigen islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP206-214) reaches regional Ag-presentation pathways via unprocessed polypeptide chains, as free IGRP206-214 peptide or via preformed IGRP206-214/K(d) complexes. This was accomplished by expressing bacterial artificial chromosome transgenes encoding wild-type (stable) or ubiquitinated (unstable) forms of IGRP in IGRP-deficient NOD mice carrying MHC class I-deficient β-cells, dendritic cells, or B cells. We investigated the ability of the pancreatic lymph nodes of these mice to prime naive IGRP206-214-reactive CD8(+) T cells in vivo, either in response to spontaneous Ag shedding, or to synchronized forms of β-cell necrosis or apoptosis. When IGRP was made unstable by targeting it for proteasomal degradation within β-cells, the cross-priming, autoimmune-initiating potential of this autoantigen (designated autoantigenicity) was impaired. Yet at the same time, the direct presentation, CTL-targeting potential of IGRP (designated pathogenicity) was enhanced. The appearance of IGRP206-214 in regional Ag-presentation pathways was dissociated from transfer of IGRP206-214 or IGRP206-214/K(d) from β cells to dendritic cells. These results indicate that autoantigenicity and pathogenicity are separable and inversely related properties and suggest that pathogenic autoantigens, capable of efficiently priming CTLs while marking target cells for CTL-induced killing, may have a critical balance of these two properties.
Collapse
Affiliation(s)
- Jinguo Wang
- Julia McFarlane Diabetes Research Centre, Snyder Institute for Chronic Diseases, Faculty of Medicine, University of Calgary, Calgary, Alberta T2N 4N1, Canada; Department of Microbiology, Immunology and Infectious Diseases, Snyder Institute for Chronic Diseases, Faculty of Medicine, University of Calgary, Calgary, Alberta T2N 4N1, Canada
| | - Roopa Hebbandi Nanjundappa
- Julia McFarlane Diabetes Research Centre, Snyder Institute for Chronic Diseases, Faculty of Medicine, University of Calgary, Calgary, Alberta T2N 4N1, Canada; Department of Microbiology, Immunology and Infectious Diseases, Snyder Institute for Chronic Diseases, Faculty of Medicine, University of Calgary, Calgary, Alberta T2N 4N1, Canada
| | - Afshin Shameli
- Julia McFarlane Diabetes Research Centre, Snyder Institute for Chronic Diseases, Faculty of Medicine, University of Calgary, Calgary, Alberta T2N 4N1, Canada; Department of Microbiology, Immunology and Infectious Diseases, Snyder Institute for Chronic Diseases, Faculty of Medicine, University of Calgary, Calgary, Alberta T2N 4N1, Canada
| | - Xavier Clemente-Casares
- Julia McFarlane Diabetes Research Centre, Snyder Institute for Chronic Diseases, Faculty of Medicine, University of Calgary, Calgary, Alberta T2N 4N1, Canada; Department of Microbiology, Immunology and Infectious Diseases, Snyder Institute for Chronic Diseases, Faculty of Medicine, University of Calgary, Calgary, Alberta T2N 4N1, Canada
| | - Jun Yamanouchi
- Julia McFarlane Diabetes Research Centre, Snyder Institute for Chronic Diseases, Faculty of Medicine, University of Calgary, Calgary, Alberta T2N 4N1, Canada
| | - John F Elliott
- Alberta Diabetes Institute, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta T6G 2E1, Canada; Department of Medical Microbiology and Immunology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta T6G 2E1, Canada; Division of Dermatology, Department of Medicine, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta T6G 2E1, Canada
| | - Robyn Slattery
- Department of Immunology, Monash University, Alfred Hospital Medical Research and Education Precinct, Melbourne, Victoria 3004, Australia; and
| | - Pau Serra
- Institut D'Investigacions Biomèdiques August Pi i Sunyer, Barcelona 08036, Spain
| | - Pere Santamaria
- Julia McFarlane Diabetes Research Centre, Snyder Institute for Chronic Diseases, Faculty of Medicine, University of Calgary, Calgary, Alberta T2N 4N1, Canada; Department of Microbiology, Immunology and Infectious Diseases, Snyder Institute for Chronic Diseases, Faculty of Medicine, University of Calgary, Calgary, Alberta T2N 4N1, Canada; Institut D'Investigacions Biomèdiques August Pi i Sunyer, Barcelona 08036, Spain
| |
Collapse
|
12
|
Xiao W, Shameli A, Harding CV, Meyerson HJ, Maitta RW. Late stages of hematopoiesis and B cell lymphopoiesis are regulated by α-synuclein, a key player in Parkinson's disease. Immunobiology 2014; 219:836-44. [PMID: 25092570 DOI: 10.1016/j.imbio.2014.07.014] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2014] [Revised: 06/26/2014] [Accepted: 07/15/2014] [Indexed: 11/16/2022]
Abstract
α-Synuclein plays a crucial role in Parkinson's disease and dementias defined as synucleinopathies. α-Synuclein is expressed in hematopoietic and immune cells, but its functions in hematopoiesis and immune responses are unknown. We utilized α-synuclein(-/-) (KO) mice to investigate its role in hematopoiesis and B cell lymphopoiesis. We demonstrated hematologic abnormalities including mild anemia, smaller platelets, lymphopenia but relatively normal early hematopoiesis in KO mice compared to wild-type (WT) as measured in hematopoietic stem cells and progenitors of the different cell lineages. However, the absolute number of B220(+)IgM(+) B cells in bone marrow was reduced by 4-fold in KO mice (WT: 104±23×10(5) vs. KO: 27±5×10(5)). B cells were also reduced in KO spleens associated with effacement of splenic and lymph node architecture. KO mice showed reduced total serum IgG but no abnormality in serum IgM was noted. When KO mice were challenged with a T cell-dependent antigen, production of antigen specific IgG1 and IgG2b was abolished, but antigen specific IgM was not different from WT mice. Our study shows hematologic abnormalities including anemia and smaller platelets, reduced B cell lymphopoiesis and defects in IgG production in the absence of α-synuclein. This is the first report to show an important role of α-synuclein late in hematopoiesis, B cell lymphopoiesis and adaptive immune response.
Collapse
Affiliation(s)
- Wenbin Xiao
- Department of Pathology, University Hospitals Case Medical Center, Cleveland, OH, United States; Case Western Reserve University School of Medicine, Cleveland, OH, United States
| | - Afshin Shameli
- Department of Pathology, University Hospitals Case Medical Center, Cleveland, OH, United States; Case Western Reserve University School of Medicine, Cleveland, OH, United States
| | - Clifford V Harding
- Department of Pathology, University Hospitals Case Medical Center, Cleveland, OH, United States; Case Western Reserve University School of Medicine, Cleveland, OH, United States
| | - Howard J Meyerson
- Department of Pathology, University Hospitals Case Medical Center, Cleveland, OH, United States; Case Western Reserve University School of Medicine, Cleveland, OH, United States
| | - Robert W Maitta
- Department of Pathology, University Hospitals Case Medical Center, Cleveland, OH, United States; Case Western Reserve University School of Medicine, Cleveland, OH, United States.
| |
Collapse
|
13
|
Shameli A, Yamanouchi J, Tsai S, Yang Y, Clemente-Casares X, Moore A, Serra P, Santamaria P. IL-2 promotes the function of memory-like autoregulatory CD8+T cells but suppresses their development via FoxP3+Treg cells. Eur J Immunol 2013. [DOI: 10.1002/eji.201242845] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Afshin Shameli
- Julia McFarlane Diabetes Research Centre (JMDRC) and Departments of Microbiology; Immunology and Infectious Diseases, Snyder Institute for Chronic Diseases, the University of Calgary; Calgary AB Canada
| | - Jun Yamanouchi
- Julia McFarlane Diabetes Research Centre (JMDRC) and Departments of Microbiology; Immunology and Infectious Diseases, Snyder Institute for Chronic Diseases, the University of Calgary; Calgary AB Canada
| | - Sue Tsai
- Julia McFarlane Diabetes Research Centre (JMDRC) and Departments of Microbiology; Immunology and Infectious Diseases, Snyder Institute for Chronic Diseases, the University of Calgary; Calgary AB Canada
| | - Yang Yang
- Julia McFarlane Diabetes Research Centre (JMDRC) and Departments of Microbiology; Immunology and Infectious Diseases, Snyder Institute for Chronic Diseases, the University of Calgary; Calgary AB Canada
- Department of Biochemistry and Molecular Biology; Faculty of Medicine, the University of Calgary; Calgary AB Canada
| | - Xavier Clemente-Casares
- Julia McFarlane Diabetes Research Centre (JMDRC) and Departments of Microbiology; Immunology and Infectious Diseases, Snyder Institute for Chronic Diseases, the University of Calgary; Calgary AB Canada
| | - Anna Moore
- Molecular Imaging Laboratory; MGH/MIT/HMS Athinoula A. Martinos Center for Biomedical Imaging; Department of Radiology; Massachusetts General Hospital; Charlestown MA USA
| | - Pau Serra
- Institut d'Investigacions Biomédiques August Pi i Sunyer - Hospital Clinic de Barcelona; Centre Esther Koplowitz Barcelona Spain
| | - Pere Santamaria
- Julia McFarlane Diabetes Research Centre (JMDRC) and Departments of Microbiology; Immunology and Infectious Diseases, Snyder Institute for Chronic Diseases, the University of Calgary; Calgary AB Canada
- Institut d'Investigacions Biomédiques August Pi i Sunyer - Hospital Clinic de Barcelona; Centre Esther Koplowitz Barcelona Spain
| |
Collapse
|
14
|
Shameli A, Clemente-Casares X, Wang J, Santamaria P. Development of memory-like autoregulatory CD8+ T cells is CD4+ T cell dependent. J Immunol 2011; 187:2859-66. [PMID: 21824864 DOI: 10.4049/jimmunol.1101117] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Progression of spontaneous autoimmune diabetes is associated with development of a disease-countering negative-feedback regulatory loop that involves differentiation of low-avidity autoreactive CD8(+) cells into memory-like autoregulatory T cells. Such T cells blunt diabetes progression by suppressing the presentation of both cognate and noncognate Ags to pathogenic high-avidity autoreactive CD8(+) T cells in the pancreas-draining lymph nodes. In this study, we show that development of autoregulatory CD8(+) T cell memory is CD4(+) T cell dependent. Transgenic (TG) NOD mice expressing a low-affinity autoreactive TCR were completely resistant to autoimmune diabetes, even after systemic treatment of the mice with agonistic anti-CD40 or anti-4-1BB mAbs or autoantigen-pulsed dendritic cells, strategies that dramatically accelerate diabetes development in TG NOD mice expressing a higher affinity TCR for the same autoantigenic specificity. Furthermore, whereas abrogation of RAG-2 expression, hence endogenous CD4(+) T cell and B cell development, decelerated disease progression in high-affinity TCR-TG NOD mice, it converted the low-affinity TCR into a pathogenic one. In agreement with these data, polyclonal CD4(+) T cells from prediabetic NOD mice promoted disease in high-affinity TCR-TG NOD.Rag2(-/-) mice, but inhibited it in low-affinity TCR-TG NOD.Rag2(-/-) mice. Thus, in chronic autoimmune responses, CD4(+) Th cells contribute to both promoting and suppressing pathogenic autoimmunity.
Collapse
Affiliation(s)
- Afshin Shameli
- Julia McFarlane Diabetes Research Centre, Faculty of Medicine, University of Calgary, Calgary, Alberta T2N 4N1, Canada
| | | | | | | |
Collapse
|
15
|
Ghaemi Oskouie F, Shameli A, Yang A, Desrosiers MD, Mucsi AD, Blackburn MR, Yang Y, Santamaria P, Shi Y. High Levels of Adenosine Deaminase on Dendritic Cells Promote Autoreactive T Cell Activation and Diabetes in Nonobese Diabetic Mice. J I 2011; 186:6798-806. [DOI: 10.4049/jimmunol.1004222] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
|
16
|
Zhang Y, Lee AS, Shameli A, Geng X, Finegood D, Santamaria P, Dutz JP. TLR9 Blockade Inhibits Activation of Diabetogenic CD8+ T Cells and Delays Autoimmune Diabetes. J I 2010; 184:5645-53. [DOI: 10.4049/jimmunol.0901814] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
17
|
Tsai S, Shameli A, Yamanouchi J, Clemente-Casares X, Wang J, Serra P, Yang Y, Medarova Z, Moore A, Santamaria P. Reversal of Autoimmunity by Boosting Memory-like Autoregulatory T Cells. Immunity 2010; 32:568-80. [DOI: 10.1016/j.immuni.2010.03.015] [Citation(s) in RCA: 203] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2008] [Revised: 12/18/2009] [Accepted: 02/09/2010] [Indexed: 10/19/2022]
|
18
|
Zwicker K, Chatten C, Gratton K, Demetrick D, Serra P, Shameli A, Santamaria P, Bathe OF. Spontaneous Autoimmunity Sufficiently Potent to Induce Diabetes Mellitus Is Insufficient to Protect against Insulinoma. J Immunol 2009; 183:1705-14. [DOI: 10.4049/jimmunol.0800902] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
19
|
Tailor P, Tsai S, Shameli A, Serra P, Wang J, Robbins S, Nagata M, Szymczak-Workman AL, Vignali DAA, Santamaria P. The proline-rich sequence of CD3epsilon as an amplifier of low-avidity TCR signaling. J Immunol 2008; 181:243-55. [PMID: 18566390 DOI: 10.4049/jimmunol.181.1.243] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Engagement of peptide-MHC by the TCR induces a conformational change in CD3epsilon that exposes a proline-rich sequence (PRS) and recruits the cytoskeletal adaptor Nck. This event, which precedes phosphorylation of the CD3epsilon ITAM, has been implicated in synapse formation and T cell function. However, there is compelling evidence that responsiveness to TCR ligation is CD3epsilon PRS independent. In this study, we show that the CD3epsilon PRS is necessary for peptide-MHC-induced phosphorylation of CD3epsilon and for recruitment of protein kinase Ctheta to the immune synapse in differentiated CD8+ T lymphocytes. However, whereas these two events are dispensable for functional T cell responsiveness to high-avidity ligands, they are required for responsiveness to low-avidity ones. Thus, in at least certain T cell clonotypes, the CD3epsilon PRS amplifies weak TCR signals by promoting synapse formation and CD3epsilon phosphorylation.
Collapse
Affiliation(s)
- Pankaj Tailor
- Julia McFarlane Diabetes Research Centre and Department of Microbiology, Faculty of Medicine, University of Calgary, Calgary, Alberta, Canada
| | | | | | | | | | | | | | | | | | | |
Collapse
|
20
|
|
21
|
|
22
|
Desrosiers MD, Cembrola KM, Fakir MJ, Stephens LA, Jama FM, Shameli A, Mehal WZ, Santamaria P, Shi Y. Adenosine deamination sustains dendritic cell activation in inflammation. J Immunol 2007; 179:1884-92. [PMID: 17641055 DOI: 10.4049/jimmunol.179.3.1884] [Citation(s) in RCA: 102] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Adenosine is a suppressive agent that protects the host from excessive tissue injury associated with strong inflammation. In tissue stress, higher levels of adenosine signal through adenosine receptors to exert strong anti-inflammatory effects, and thus protect host cells. Existing evidence also suggests that elevated adenosine potently down-regulates the activation of lymphocytes during inflammation. This notion, however, is in contrast with another basic observation that the immune system is highly activated precisely under the same circumstances against pathogens. In this study, we show that inflammatory responses of dendritic cells (DCs) are highly sensitive to adenosine suppression. However, they intrinsically carry high adenosine deaminase activity, which in turn degrades and removes adenosine from the surroundings, cutting off DCs from the suppression. This regulatory mechanism is important in DC responses to pathogen-associated molecular patterns and their activation of T cells. Our findings suggest a mechanism that DCs maintain their hyperreactive state in inflammation despite the general state of suppression, and reveal a regulatory role of adenosine deaminase in DC innate immune responses.
Collapse
Affiliation(s)
- Melanie D Desrosiers
- Department of Microbiology and Infectious Diseases, Julia McFarlane Diabetes Research Centre, Faculty of Medicine, University of Calgary, Calgary, Alberta, Canada
| | | | | | | | | | | | | | | | | |
Collapse
|
23
|
Shameli A, Yamanouchi J, Thiessen S, Santamaria P. Endoplasmic reticulum stress caused by overexpression of islet-specific glucose-6-phosphatase catalytic subunit-related protein in pancreatic Beta-cells. Rev Diabet Stud 2007; 4:25-32. [PMID: 17565413 PMCID: PMC1892522 DOI: 10.1900/rds.2007.4.25] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
The high rate of protein synthesis in beta-cells renders them susceptible to endoplasmic reticulum (ER) stress, a condition that can be aggravated by additional imbalances in ER homeostasis and could potentially contribute to the pathogenesis of type-1 and type-2 diabetes. Islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP) is an ER-resident protein that is specifically expressed in pancreatic beta-cells and is a major target of diabetogenic CD8(+) T cell responses in non-obese diabetic (NOD) mice. We produced transgenic mice expressing human IGRP (hIGRP) under the control of rat insulin promoter (RIP) to study epitopes in hIGRP capable of driving diabetogenic human leukocyte antigen (HLA)-restricted CD8(+) T-cell responses in hIGRP/HLA transgenic NOD mice. Surprisingly, we found that 3 out of 14 lines expressing RIP-hIGRP in a non-T1D-prone genetic background developed a form of early-onset diabetes that was dissociated from autoimmune inflammation of pancreatic islets. We show that diabetes in these 3 lines resulted from increased rates of beta-cell death because of ER stress. We hypothesize that IGRP compounds the viability of beta-cells undergoing ER stress by generating unfolded proteins in the ER lumen, and that IGRP's location in the ER accounts, in part, for its exquisite immunogenicity in T1D-prone genetic backgrounds.
Collapse
|
24
|
Afshari JT, Ghomian N, Shameli A, Shakeri MT, Fahmidehkar MA, Mahajer E, Khoshnavaz R, Emadzadeh M. Determination of Interleukin-6 and Tumor Necrosis Factor-alpha concentrations in Iranian-Khorasanian patients with preeclampsia. BMC Pregnancy Childbirth 2005; 5:14. [PMID: 16259641 PMCID: PMC1298308 DOI: 10.1186/1471-2393-5-14] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2005] [Accepted: 11/01/2005] [Indexed: 11/26/2022] Open
Abstract
Background Our objective was to determine the role of Interleukin-6 (IL-6) and Tumor Necrosis Factor-alpha (TNF-alpha), markers of immune activation and endothelial dysfunction, in patients with preeclampsia. Methods Twenty four women with preeclampsia and eighteen antepartum normotensive pregnant women were recruited as controls. Serum levels of IL-6 and TNF-alpha were measured by enzyme-linked immunosorbent assay. We used independent-samples t test to assess the differences in the concentration of cytokines in preeclamptic patients and control subjects. Results IL-6 levels [mean (S.D.)] were significantly higher in preeclamptic women [5.8 (4.85) pg/ml] compared to normal pregnant women [3.01 (2.45) pg/ml] (p = 0.02). There was no significant change in concentration of TNF-alpha in preeclamptic women [53.8 (30.0) pg/ml] compared to normal pregnant women [51.9 (33.8) pg/ml] (p > 0.1). Conclusion The results of this study show that IL-6 as a pro-inflammatory cytokine is present in higher concentration in women with preeclampsia. The study was undertaken in women with established preeclampsia and it is not possible to determine whether the increased concentration of IL-6 is a cause or consequence of the disease. Furthermore, these findings suggest that serum TNF-alpha level is not associated with preeclampsia.
Collapse
Affiliation(s)
- J Tavakkol Afshari
- Immunogenetics department, Immunology Research Group, Bu-Ali Research Institute, Bu-Ali Sq., Mashhad University of Medical Sciences (MUMS), Mashhad, Iran
| | - N Ghomian
- Obstetrics & Gynecology department, Imam Reza Hospital, Imam Reza Sq., Mashhad University of Medical Sciences (MUMS), Mashhad, Iran
| | - A Shameli
- Obstetrics & Gynecology department, Imam Reza Hospital, Imam Reza Sq., Mashhad University of Medical Sciences (MUMS), Mashhad, Iran
| | - MT Shakeri
- Community medicine department, Medical school, Daneshgah St., Mashhad University of Medical Science (MUMS), Mashhad, Iran
| | - MA Fahmidehkar
- Immunogenetics department, Immunology Research Group, Bu-Ali Research Institute, Bu-Ali Sq., Mashhad University of Medical Sciences (MUMS), Mashhad, Iran
| | - E Mahajer
- Immunogenetics department, Immunology Research Group, Bu-Ali Research Institute, Bu-Ali Sq., Mashhad University of Medical Sciences (MUMS), Mashhad, Iran
| | - R Khoshnavaz
- Department of Cardiology, Ghaem Hospital, Ahmad Abad St., Mashhad University of Medical Sciences (MUMS), Mashhad, Iran
| | - M Emadzadeh
- Department of Cardiology, Ghaem Hospital, Ahmad Abad St., Mashhad University of Medical Sciences (MUMS), Mashhad, Iran
| |
Collapse
|
25
|
Sadeghi S, Eslahi M, Naseri M, Naeimi H, Sharghi H, Shameli A. Copper Ion Selective Membrane Electrodes Based on Some Schiff Base Derivatives. ELECTROANAL 2003. [DOI: 10.1002/elan.200302807] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|