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Heydt Q, Xintaropoulou C, Clear A, Austin M, Pislariu I, Miraki-Moud F, Cutillas P, Korfi K, Calaminici M, Cawthorn W, Suchacki K, Nagano A, Gribben JG, Smith M, Cavenagh JD, Oakervee H, Castleton A, Taussig D, Peck B, Wilczynska A, McNaughton L, Bonnet D, Mardakheh F, Patel B. Adipocytes disrupt the translational programme of acute lymphoblastic leukaemia to favour tumour survival and persistence. Nat Commun 2021; 12:5507. [PMID: 34535653 PMCID: PMC8448863 DOI: 10.1038/s41467-021-25540-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 08/17/2021] [Indexed: 11/09/2022] Open
Abstract
The specific niche adaptations that facilitate primary disease and Acute Lymphoblastic Leukaemia (ALL) survival after induction chemotherapy remain unclear. Here, we show that Bone Marrow (BM) adipocytes dynamically evolve during ALL pathogenesis and therapy, transitioning from cellular depletion in the primary leukaemia niche to a fully reconstituted state upon remission induction. Functionally, adipocyte niches elicit a fate switch in ALL cells towards slow-proliferation and cellular quiescence, highlighting the critical contribution of the adipocyte dynamic to disease establishment and chemotherapy resistance. Mechanistically, adipocyte niche interaction targets posttranscriptional networks and suppresses protein biosynthesis in ALL cells. Treatment with general control nonderepressible 2 inhibitor (GCN2ib) alleviates adipocyte-mediated translational repression and rescues ALL cell quiescence thereby significantly reducing the cytoprotective effect of adipocytes against chemotherapy and other extrinsic stressors. These data establish how adipocyte driven restrictions of the ALL proteome benefit ALL tumours, preventing their elimination, and suggest ways to manipulate adipocyte-mediated ALL resistance.
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Affiliation(s)
- Q Heydt
- Centre for Haemato-Oncology, Barts Cancer Institute, John Vane Science Centre, Charterhouse Square, Queen Mary University of London, London, UK
| | - C Xintaropoulou
- Centre for Haemato-Oncology, Barts Cancer Institute, John Vane Science Centre, Charterhouse Square, Queen Mary University of London, London, UK
| | - A Clear
- Centre for Haemato-Oncology, Barts Cancer Institute, John Vane Science Centre, Charterhouse Square, Queen Mary University of London, London, UK
| | - M Austin
- Centre for Haemato-Oncology, Barts Cancer Institute, John Vane Science Centre, Charterhouse Square, Queen Mary University of London, London, UK
| | - I Pislariu
- Centre for Haemato-Oncology, Barts Cancer Institute, John Vane Science Centre, Charterhouse Square, Queen Mary University of London, London, UK
| | - F Miraki-Moud
- Centre for Haemato-Oncology, Barts Cancer Institute, John Vane Science Centre, Charterhouse Square, Queen Mary University of London, London, UK
| | - P Cutillas
- Centre for Haemato-Oncology, Barts Cancer Institute, John Vane Science Centre, Charterhouse Square, Queen Mary University of London, London, UK
| | - K Korfi
- Centre for Haemato-Oncology, Barts Cancer Institute, John Vane Science Centre, Charterhouse Square, Queen Mary University of London, London, UK
| | - M Calaminici
- Centre for Haemato-Oncology, Barts Cancer Institute, John Vane Science Centre, Charterhouse Square, Queen Mary University of London, London, UK
| | - W Cawthorn
- BHF Centre for Cardiovascular Science, The Queen's Medical Research Institute, Edinburgh BioQuarter, University of Edinburgh, Edinburgh, Scotland, UK
| | - K Suchacki
- BHF Centre for Cardiovascular Science, The Queen's Medical Research Institute, Edinburgh BioQuarter, University of Edinburgh, Edinburgh, Scotland, UK
| | - A Nagano
- Centre for Molecular Oncology, Barts Cancer Institute, John Vane Science Centre, Charterhouse Square, Queen Mary University of London, London, UK
| | - J G Gribben
- Centre for Haemato-Oncology, Barts Cancer Institute, John Vane Science Centre, Charterhouse Square, Queen Mary University of London, London, UK
| | - M Smith
- Department of Haemato-Oncology, St Bartholomew's Hospital, West Smithfield, London, UK
| | - J D Cavenagh
- Department of Haemato-Oncology, St Bartholomew's Hospital, West Smithfield, London, UK
| | - H Oakervee
- Department of Haemato-Oncology, St Bartholomew's Hospital, West Smithfield, London, UK
| | - A Castleton
- Christie NHS Foundation Trust, Manchester, UK
| | - D Taussig
- Haemato-oncology Unit, The Royal Marsden Hospital, Sutton, UK
| | - B Peck
- Centre for Tumour Biology, Barts Cancer Institute, John Vane Science Centre, Charterhouse Square, Queen Mary University of London, London, UK
| | - A Wilczynska
- CRUK Beatson Institute, Glasgow, UK
- Institute of Cancer Sciences, University of Glasgow, Glasgow, UK
| | - L McNaughton
- Haematopoietic Stem Cell Laboratory, The Francis Crick Institute, London, UK
| | - D Bonnet
- Haematopoietic Stem Cell Laboratory, The Francis Crick Institute, London, UK
| | - F Mardakheh
- Centre for Molecular Oncology, Barts Cancer Institute, John Vane Science Centre, Charterhouse Square, Queen Mary University of London, London, UK
| | - B Patel
- Centre for Haemato-Oncology, Barts Cancer Institute, John Vane Science Centre, Charterhouse Square, Queen Mary University of London, London, UK.
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Korfi K, Araf S, Bewicke-Copley F, Kumar E, Cummin T, Ashton-Key M, Barrans S, Van Hoppe S, Burton C, Elshiekh M, Rule S, Crosbie N, Clear A, Calaminici M, Menon G, Sha C, Bentley M, Nagano A, Davies A, Painter D, Smith A, Okosun J, Gribben J, Naresh K, Westhead D, Wang J, Johnson P, Fitzgibbon J. LONGITUDINAL ANALYSES OF DIAGNOSTIC-RELAPSE BIOPSIES OF DIFFUSE LARGE B CELL LYMPHOMA SUGGEST THAT RELAPSE IS MEDIATED BY DISTINCT MECHANISMS IN ABC AND GCB LYMPHOMA. Hematol Oncol 2019. [DOI: 10.1002/hon.100_2629] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- K. Korfi
- Centre for Haemato-Oncology; Barts Cancer Institute; London United Kingdom
| | - S. Araf
- Centre for Haemato-Oncology; Barts Cancer Institute; London United Kingdom
| | - F. Bewicke-Copley
- Centre for Molecular Oncology; Barts Cancer Institute; London United Kingdom
| | - E. Kumar
- Centre for Haemato-Oncology; Barts Cancer Institute; London United Kingdom
| | - T. Cummin
- Cancer Research UK Centre; University of Southampton; Southampton United Kingdom
| | - M. Ashton-Key
- Cellular Pathology; University Hospital Southampton NHS Foundation Trust; Southampton United Kingdom
| | - S. Barrans
- HMDS; Leeds Teaching Hospitals NHS Trust; Leeds United Kingdom
| | - S. Van Hoppe
- HMDS; Leeds Teaching Hospitals NHS Trust; Leeds United Kingdom
| | - C. Burton
- HMDS; Leeds Teaching Hospitals NHS Trust; Leeds United Kingdom
| | - M. Elshiekh
- Cellular & Molecular Pathology; Imperial College NHS Trust & Imperial College London; London United Kingdom
| | - S. Rule
- Department of Haematology; Derriford Hospital, University of Plymouth; Plymouth United Kingdom
| | - N. Crosbie
- Department of Haematology; University Hospitals Plymouth NHS Trust; Plymouth United Kingdom
| | - A. Clear
- Centre for Haemato-Oncology; Barts Cancer Institute; London United Kingdom
| | - M. Calaminici
- Centre for Haemato-Oncology; Barts Cancer Institute; London United Kingdom
| | - G. Menon
- Haemato-Oncology Diagnostic Service; Liverpool Clinical Laboratories; Liverpool United Kingdom
| | - C. Sha
- School of Molecular and Cellular Biology; University of Leeds; Leeds United Kingdom
| | - M. Bentley
- School of Molecular and Cellular Biology; University of Leeds; Leeds United Kingdom
| | - A. Nagano
- Centre for Molecular Oncology; Barts Cancer Institute; London United Kingdom
| | - A. Davies
- Cancer Research UK Centre; University of Southampton; Southampton United Kingdom
| | - D. Painter
- Epidemiology and Cancer Statistics Group; University of York; York United Kingdom
| | - A. Smith
- Epidemiology and Cancer Statistics Group; University of York; York United Kingdom
| | - J. Okosun
- Centre for Haemato-Oncology; Barts Cancer Institute; London United Kingdom
| | - J. Gribben
- Centre for Haemato-Oncology; Barts Cancer Institute; London United Kingdom
| | - K.N. Naresh
- Cellular & Molecular Pathology; Imperial College NHS Trust & Imperial College London; London United Kingdom
| | - D. Westhead
- School of Molecular and Cellular Biology; University of Leeds; Leeds United Kingdom
| | - J. Wang
- Centre for Molecular Oncology; Barts Cancer Institute; London United Kingdom
| | - P. Johnson
- Cancer Research UK Centre; University of Southampton; Southampton United Kingdom
| | - J. Fitzgibbon
- Centre for Haemato-Oncology; Barts Cancer Institute; London United Kingdom
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Kumar E, Korfi K, Bewicke-Copley F, Witzig T, Leukam M, Ansell S, Scott J, Rallis K, Clear A, Efeyan A, Calaminici M, Wang J, Okosun J, Smith S, Novak A, Fitzgibbon J. MUTATIONS AFFECTING THE CREBBP HAT DOMAIN PREDICT RESPONSE TO MTOR INHIBITORS EVEROLIMUS AND TEMSIROLIMUS IN RELAPSED/REFRACTORY FOLLICULAR LYMPHOMA. Hemasphere 2019. [DOI: 10.1097/02014419-201906001-00412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Kumar E, Korfi K, Bewicke-Copley F, Witzig T, Leukam M, Ansell S, Scott J, Rallis K, Clear A, Efeyan A, Calaminici M, Wang J, Okosun J, Smith S, Novak A, Fitzgibbon J. PF513 MUTATIONS AFFECTING THE CREBBP HAT DOMAIN PREDICT RESPONSE TO MTOR INHIBITORS EVEROLIMUS AND TEMSIROLIMUS IN RELAPSED/REFRACTORY FOLLICULAR LYMPHOMA. Hemasphere 2019. [DOI: 10.1097/01.hs9.0000560152.86937.ed] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Baptista M, Tapia G, Muñoz-Marmol A, Muncunill J, Montoto S, Gribben J, Calaminici M, Martinez A, Gonzalez-Farre B, López-Guillermo A, González-Barca E, Terol M, Miralles P, Alcoceba M, Vall-Llovera F, Briones J, Abrisqueta P, Abella E, Provencio M, García-Ballesteros C, Moraleda J, Sancho J, Ribera J, Mate J, Navarro J. APPLICATION OF CELL-OF-ORIGIN SUBTYPES DETERMINED BY DIGITAL GENE EXPRESSION IN HIV-RELATED DIFFUSE LARGE B-CELL LYMPHOMAS. Hematol Oncol 2017. [DOI: 10.1002/hon.2438_11] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- M. Baptista
- Department of Hematology; ICO-Hospital Universitari Germans Trias i Pujol, Josep Carreras Leukaemia Research Institute, Universitat Autònoma de Barcelona; Badalona Spain
| | - G. Tapia
- Department of Pathology; Hospital Universitari Germans Trias i Pujol, Universitat Autònoma de Barcelona; Badalona Spain
| | - A. Muñoz-Marmol
- Department of Pathology; Hospital Universitari Germans Trias i Pujol, Universitat Autònoma de Barcelona; Badalona Spain
| | - J. Muncunill
- Department of Hematology; ICO-Hospital Universitari Germans Trias i Pujol, Josep Carreras Leukaemia Research Institute, Universitat Autònoma de Barcelona; Badalona Spain
| | - S. Montoto
- Department of Haemato-Oncology, Barts Cancer Institute; Queen Mary University of London; London UK
| | - J. Gribben
- Department of Haemato-Oncology, Barts Cancer Institute; Queen Mary University of London; London UK
| | - M. Calaminici
- Department of Haemato-Oncology, Barts Cancer Institute; Queen Mary University of London; London UK
| | - A. Martinez
- Department of Pathology, Hospital Clinic, Institut d'Investigacions Biomediques August Pi I Sunyer (IDIBAPS); University of Barcelona; Barcelona Spain
| | - B. Gonzalez-Farre
- Department of Pathology, Hospital Clinic, Institut d'Investigacions Biomediques August Pi I Sunyer (IDIBAPS); University of Barcelona; Barcelona Spain
| | - A. López-Guillermo
- Department of Hematology, Hospital Clinic, Institut d'Investigacions Biomediques August Pi I Sunyer (IDIBAPS); University of Barcelona; Barcelona Spain
| | - E. González-Barca
- Department of Hematology; ICO-Hospital Duran i Reynals, L'Hospitalet de Llobregat; Spain
| | - M. Terol
- Department of Hematology and Oncology; Hospital Clínic Universitari de València; Valencia Spain
| | - P. Miralles
- Department of Infectious Diseases; Hospital Gregorio Marañón; Madrid Spain
| | - M. Alcoceba
- Department of Hematology; Hospital Universitario de Salamanca; Salamanca Spain
| | - F. Vall-Llovera
- Servicio de Hematología Clínica; Hospital Universitari Mutúa de Terrassa; Terrassa Spain
| | - J. Briones
- Department of Hematology, Hospital de la Santa Creu i Sant Pau; Josep Carreras Leukaemia Research Institute; Barcelona Spain
| | - P. Abrisqueta
- Department of Hematology; Hospital Vall d'Hebrón; Barcelona Spain
| | - E. Abella
- Department of Hematology; Hospital del Mar; Barcelona Spain
| | - M. Provencio
- Department of Medical Oncology; Hospital Universitario Puerta De Hierro; Majadahonda Spain
| | | | - J. Moraleda
- Department of Hematology; Hospital Clinico Universitario Virgen de la Arrixaca; Murcia Spain
| | - J. Sancho
- Department of Hematology; ICO-Hospital Universitari Germans Trias i Pujol, Josep Carreras Leukaemia Research Institute, Universitat Autònoma de Barcelona; Badalona Spain
| | - J. Ribera
- Department of Hematology; ICO-Hospital Universitari Germans Trias i Pujol, Josep Carreras Leukaemia Research Institute, Universitat Autònoma de Barcelona; Badalona Spain
| | - J. Mate
- Department of Pathology; Hospital Universitari Germans Trias i Pujol, Universitat Autònoma de Barcelona; Badalona Spain
| | - J. Navarro
- Department of Hematology; ICO-Hospital Universitari Germans Trias i Pujol, Josep Carreras Leukaemia Research Institute, Universitat Autònoma de Barcelona; Badalona Spain
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Rizvi H, Paterson JC, Tedoldi S, Ramsay A, Calaminici M, Natkunam Y, Lonardi S, Tan SY, Campbell L, Hansmann ML, Jones D, Dikic I, Shaw AS, Pileri SA, Stein H, Mason DY, Facchetti F, Marafioti T. Expression of the CD2AP adaptor molecule in normal, reactive and neoplastic human tissue. Pathologica 2012; 104:56-64. [PMID: 22953501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023] Open
Abstract
AIMS To study the expression of CD2-associated protein (CD2AP), an adaptor protein involved in T-cell signalling and renal function, in normal, reactive and neoplastic human lymphoid tissues. METHODS AND RESULTS We used immunohistochemical techniques to evaluate monoclonal antibodies against CD2AP on over 400 formalin fixed paraffin embedded tissue blocks retrieved from the host institutions of three authors. The samples tested included normal, reactive and neoplastic lymphoid tissue. In lymphoid tissues, strong CD2AP staining was observed in plasmacytoid dendritic cells (pDCs), weak and variable in mantle zone B cells and moderate in rare germinal center cells. CD2AP labeled cortical and rare medullary thymocytes and isolated mononuclear cells in bone marrow trephines. Furthermore, epithelial and endothelial cells expressed CD2AP. Among neoplasms, the greatest number of CD2AP-positive cases were found in diffuse large B cell (21/94), NK T-cell lymphomas (7/67), "blastic plasmacytoid dendritic cell neoplasms" (9/10) and some types of solid tumor. CONCLUSIONS Our finding that mature peripheral T cells are CD2AP-negative but immature cortical thymocytes are positive may prove useful for diagnostic purposes. Moreover, our results demonstrate that CD2AP represents a useful marker of normal and neoplastic pDC and may be used in a diagnostic panel in reactive or neoplastic lymphoid proliferations.
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Affiliation(s)
- H Rizvi
- Department of Cellular Pathology, Barts and The London NHS Trust, London, UK
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Bödör C, O'Riain C, Wrench D, Matthews J, Iyengar S, Tayyib H, Calaminici M, Clear A, Iqbal S, Quentmeier H, Drexler HG, Montoto S, Lister AT, Gribben JG, Matolcsy A, Fitzgibbon J. EZH2 Y641 mutations in follicular lymphoma. Leukemia 2011; 25:726-9. [PMID: 21233829 DOI: 10.1038/leu.2010.311] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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8
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Szlosarek PW, Delage B, O'Riain C, Hatzimichael E, Crook T, Calaminici M, Gribben JG, Lemoine N, Lister TA, Fitzgibbon J. Effect of inactivation of argininosuccinate synthetase on sensitivity of lymphomas to caspase-dependent apoptosis following treatment with arginine deiminase. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.8093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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9
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Haq J, Ali E, Dajani H, Cheng L, Rowe S, Burke S, Calaminici M. Neck lump clinics—a local survey. Br J Oral Maxillofac Surg 2009. [DOI: 10.1016/j.bjoms.2009.06.140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Davies AJ, Lee AM, Taylor C, Clear AJ, Goff LK, Iqbal S, Cuthbert-Heavens D, Calaminici M, Norton AJ, Lister TA, Fitzgibbon J. A limited role for TP53 mutation in the transformation of follicular lymphoma to diffuse large B-cell lymphoma. Leukemia 2005; 19:1459-65. [PMID: 15902285 DOI: 10.1038/sj.leu.2403802] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The role of TP53 mutation in transformation of follicular lymphoma (FL) to diffuse large B-cell lymphoma (t-FL) was examined in a panel of 91 lymph node biopsies derived from 29 patients pre- and post-transformation. The entire TP53 coding sequence was screened and immunocytochemistry performed to determine expression of p53 and its key regulator MDM2. A total of 10 mutations were detected in eight patients (28%), although none were present at FL diagnosis. Mutations were not detected solely at the time of transformation; in three patients, mutated TP53 arose in at least one antecedent FL sample (6 months, 2.5 years and 4 years prior to transformation). Loss of heterozygosity at the TP53 locus occurred in 2/20 informative patients (only in t-FL samples). p53 staining was positive in 82% (9/11) of available biopsies with a missense mutation, and negative in 71% (45/63) with wtTP53. MDM2 expression was significantly higher in t-FL samples (mean 72% positive; 95% confidence interval (95% CI) 68-76%) than FL (mean 58% positive; 95% CI 54-62%) (P<0.001) but did not correlate with TP53 status. TP53 mutation has only a limited role in the transformation of FL, exerting a heterogeneous influence upon phenotypic change. In contrast, dysregulation of MDM2 is frequent and may provide a more rational therapeutic target..
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Affiliation(s)
- A J Davies
- Cancer Research UK Medical Oncology Unit, Bart's and The Royal London School of Medicine and Dentistry, London, UK.
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Abstract
AIMS Mediastinal large B-cell lymphoma (MLBCL) is a subtype of diffuse large B-cell lymphoma (DLBCL) in the WHO classification with peculiar features, such as female prevalence, young patient age and bulky presentation. It shows a B-cell phenotype with variable expression of surface immunoglobulin, negative CD21 and CD10 and positive CD30 in a large number of cases. An origin from activated thymic B cells has been suggested in several studies. A subpopulation of large, dendritic cells (asteroid cells) strongly expressing CD23 has been identified amongst thymic B cells and these could represent the normal cellular counterpart for this type of primary mediastinal large cell lymphoma. METHODS AND RESULTS To explore this possibility, we immunostained 24 cases of primary mediastinal lymphomas and 100 cases of non-mediastinal, nodal and extranodal, DLBCLs for CD23 in routinely processed paraffin-embedded tissues. CONCLUSIONS Our results show that a vast majority (70%) of mediastinal lymphomas strongly express CD23 whilst the same antigen is expressed in only 15% of non-mediastinal nodal DLBCLs and 9% of non-mediastinal extranodal DLBCLs. These results support the hypothesis that most cases of MLBCL arise from activated dendritic thymic B cells. We also suggest that CD23 should be included in the panel of antibodies currently used to characterize this subtype of DLBCL.
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Affiliation(s)
- M Calaminici
- Department of Histopathology, St Bartholomew's Hospital, London, UK.
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Abstract
Inadequate rates (IR) in FNAC from different sources were compared. The rates were lowest when FNAC was performed by a cytopathologist (12%) and highest when done by a non-cytopathologist (32%). These differences were mirrored in high IRs in breast cancer cases. IR was not significantly improved when non-cytopathologist FNAC was attended by a cytotechnician.
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Affiliation(s)
- N Singh
- Department of Histopathology, St Bartholomew's Hospital, West Smithfield, London, UK.
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Abdulla FA, Calaminici M, Gray JA, Sinden JD, Stephenson JD. Changes in the sensitivity of frontal cortical neurones to acetylcholine after unilateral lesion of the nucleus basalis with alpha-amino-3-OH-4-isoxozole propionic acid (AMPA): effects of basal forebrain transplants into neocortex. Brain Res Bull 1997; 42:169-86. [PMID: 8995327 DOI: 10.1016/s0361-9230(96)00213-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Unilateral S-alpha-amino-3-hydroxy-5-methyl-4-isoxazole propionic acid (AMPA) lesions of the nucleus basalis magnocellularis (nbm), which produced persistent and extensive ChAT-positive cell loss within the nbm and depletion of cortical cholinergic markers in the frontal cortex, increased both the number and sensitivity of individual frontal cortical neurones responding to iontophoretic administration of ACh. The lesion also increased the sensitivity of individual neurones to carbachol but the increase in the number of neurones responding to carbachol was transient and had returned to normal 4 weeks after lesion. The sensitivity of individual neurones to glutamate was unchanged by the lesion. The percentage of cortical neurones responding to ACh, but not the sensitivity of individual neurones was restored to the prelesion level, 6-8 weeks after cholinergic transplants to the lesioned frontal cortex; cholinergic transplants to the more distant parietal cortex were only effective after 6 months whereas noncholinergic transplants were ineffective at both time intervals. Cholinergic transplants placed in the frontal cortex 6-8 weeks or 6 months before nbm lesion offered some protection from the effects of the lesion, particularly at 6 months but were ineffective when placed into the parietal cortex. Lesion of the nbm also reduced basal firing rate of spontaneously active neurones and this was not restored by any of the transplants. The results are discussed in the light of quantitative measurements of acetylcholinesterase-positive fibre outgrowth from the transplant into the recording area, which are described in the preceding manuscript [20].
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Affiliation(s)
- F A Abdulla
- Department of Psychology, Institute of Psychiatry, London, UK
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15
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Calaminici M, Abdulla FA, Sinden JD, Stephenson JD. Plastic changes in the cholinergic innervation of the rat cerebral cortex after unilateral lesion of the nucleus basalis with alpha-amino-3-OH-4-isoxozole propionic acid (AMPA): effects of basal forebrain transplants into neocortex. Brain Res Bull 1997; 42:79-93. [PMID: 8971411 DOI: 10.1016/s0361-9230(96)00212-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Unilateral AMPA lesions of the nucleus basalis magnocellularis (nbm) produced a nearly complete loss of cholinergic markers in the ipsilateral frontal and parietal cortices with no recovery at 6 months. The loss was associated with compensatory increases in AChE-positive fibre density in the contralateral cortex, in ipsilateral cortical regions not receiving their cholinergic innervation from the nbm and in the size of cholinergic magnocellular neurones in the contralateral nbm. The hypertrophy and increase in AChE-positive fibre density were apparent at 4-6 weeks after lesion and increased with time. Cholinergic transplants to cholinergically deafferented cortex prevented development of the compensatory increases in AChE-positive fibre density and restored AChE-positive fibre density and ChAT activity to control levels in ipsilateral cholinergically deafferented regions, partially after 6-8 weeks and completely after 6 months. In contrast, when cholinergic grafts were placed into unlesioned cortex, axonal outgrowth was localized to the vicinity of the transplant and did not develop with time. These results support the concept that vacant synapses promote and direct axonal outgrowth from transplanted neurones and that grafted cholinergic neurones integrate into the lesioned forebrain cholinergic projections system and prevent the lesion-induced changes in AChE-positive fibre density and ChAT activity.
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Affiliation(s)
- M Calaminici
- Department of Neuroscience, Institute of Psychiatry, London, UK
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16
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Abdulla FA, Calaminici M, Gray JA, Stephenson JD, Sinden JD. Behavioural specificity of neocortical grafts of fetal basal forebrain tissue after unilateral lesion of the nucleus basalis with alpha-amino-3-OH-4-isoxozole propionic acid (AMPA). Brain Res Bull 1997; 42:407-14. [PMID: 9128913 DOI: 10.1016/s0361-9230(96)00438-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The previous articles in this series [4,9] have shown that unilateral AMPA lesions of the nucleus basalis magnocellularis (nbm) produced widespread morphological and functional changes to the forebrain cholinergic projection system that could be reversed by transplants of fetal cholinergic tissue. At earlier postgraft time points, the effects of cholinergic grafts were specific to the neocortical region (frontal or parietal cortex) into which the grafts were targeted. Here we report that nbm lesion-induced spatial learning and memory deficits in the Morris water maze were reversed at 6-8 weeks postsurgery only by cholinergic grafts placed in the frontal cortex or frontal and parietal cortices combined. Similar grafts to parietal cortex only and noncholinergic fetal transplants to any cortical site were ineffective. In contrast, using separate groups of animals, deficits in sensorimotor function could be reversed in only one measure (open field turning) by cholinergic transplants targeted to the parietal (somatosensory) cortex or frontal and parietal cortex combined. These behavioural dissociations demonstrate that the frontal cortical cholinergic innervation from the nbm is necessary for effective spatial cognitive performance.
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Affiliation(s)
- F A Abdulla
- Department of Psychology, Institute of Psychiatry, London, UK
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Abdulla FA, Calaminici M, Wonnacott S, Gray JA, Sinden JD, Stephenson JD. Sensitivity of rat frontal cortical neurones to nicotine is increased by chronic administration of nicotine and by lesions of the nucleus basalis magnocellularis: comparison with numbers of [3H]nicotine binding sites. Synapse 1995; 21:281-8. [PMID: 8869158 DOI: 10.1002/syn.890210402] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The effects of chronic nicotine treatment and of unilateral AMPA lesion of the nucleus basalis magnocellularis (nbm) on the sensitivity of frontal cortical neurones to iontophoretically applied nicotine were studied. Chronic nicotine treatment increased the number of [3H]nicotine binding sites from 2.9 to 3.9 pmol g-1 wet weight, and increased the proportion of cortical neurones responding to nicotine from 32.3% to 60.0%. After unilateral nbm lesions, the densities of AChE-positive fibers and [3H]nicotine binding sites were reduced by approximately 97% and 55%, respectively, and the proportion of neurones responding to nicotine increased from 32.3% to 53.8%. The two treatments, chronic nicotine administration and nbm lesion, also increased the size of individual neuronal responses, prolonged their duration, and shortened the response latency. Responses to glutamate were unaffected by either procedures. The results show that the increase in [3H]nicotine binding produced by chronic nicotine administration is associated with an increased response to iontophoretically applied nicotine, suggesting that the receptor upregulation induced by the chronic treatment were functional. Less easily explained is the association between increased sensitivity of frontal cortical neurons to nicotine after nbm lesion with a decreased receptor density. It is suggested that a substantial proportion of nicotinic receptors are located presynaptically, and that their loss after lesion concealed an upregulation at postsynaptic sites.
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Affiliation(s)
- F A Abdulla
- Department of Pharmacology, University of Alberta, Edmonton, Canada
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Abdulla EM, Calaminici M, Campbell IC. Comparison of neurite outgrowth with neurofilament protein subunit levels in neuroblastoma cells following mercuric oxide exposure. Clin Exp Pharmacol Physiol 1995; 22:362-3. [PMID: 7554430 DOI: 10.1111/j.1440-1681.1995.tb02017.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
1. The objectives of the study were to establish that inhibition of neuronal differentiation in culture (assessed by neurite outgrowth) can be used as a broad spectrum in vitro measure of neurotoxicity. 2. To establish whether a rapid measure of neurite outgrowth could be used. Thus the study examined the relationship between the degree of neurite outgrowth assessed directly by image analysis and neurofilament protein subunit levels measured by an ELISA. 3. SKNSH neuroblastoma cells, exposed for up to 6 days to mercuric chloride during initiation and continuation of differentiation, had lower levels of neurofilament proteins than unexposed cells. 4. Preliminary data from parallel examinations of neurite outgrowth assessed by image analysis and neurofilament protein subunit levels assessed by ELISA support a correlation when neurofilament protein levels are decreased by sub-cytotoxic doses of mercuric chloride in SKNSH cells.
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Affiliation(s)
- E M Abdulla
- Wellcome Research Laboratories, Beckenham, UK
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Libri V, Constanti A, Calaminici M, Nisticó G. A comparison of the muscarinic response and morphological properties of identified cells in the guinea-pig olfactory cortex in vitro. Neuroscience 1994; 59:331-47. [PMID: 8008196 DOI: 10.1016/0306-4522(94)90600-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The electrophysiological and morphological characteristics of neurons in the guinea-pig olfactory cortex brain slice were investigated using a combined intracellular recording and neurobiotin-dye filling technique, in an attempt to show whether a clear relation existed between cell morphology and excitatory muscarinic response profile. Out of 46 sampled neurons, 25 (termed type 1), responded to bath-application of the muscarinic agonist oxotremorine-M (10 microM, 2-3 min) with a strong and persistent excitation coupled with the appearance of a slow depolarizing afterpotential (10-20 mV amplitude) following a large depolarizing stimulus. These neurons were identified as deep pyramidal cells located in cortical layer III, with characteristic pyramidal/ovoid shaped cell bodies, prominent apical dendrites with branches extending to the surface, and extensive basal dendritic trees. The cells showed a regular spiking pattern in response to injected depolarizing current, with no evidence of bursting behaviour. Nine cells (termed type 2), were strongly excited by oxotremorine-M, but only generated a weak depolarizing afterpotential (< 5 mV) following stimulation. These neurons (located in layer III or at layer II-III border) had a variable, non-pyramidal morphology with either a fusiform/tripolar, stellate/multipolar or bipolar/bi-tufted appearance, respectively. Apart from a more prominent post-spike afterhyperpolarization observed in some type 2 cells, their resting membrane properties and firing patterns were indistinguishable from those of type 1 responding cells. Twelve cells (termed type 3) showed little or no excitatory response to oxotremorine-M, and never generated a post-stimulus slow afterdepolarization. These cells (within compact layer II) had the morphological features of superficial pyramidal cells, typified by their short apical trunks and well-developed apical dendritic trees. They could be distinguished electrophysiologically by their ability to show spike fractionation during injection of large depolarizing current pulses. The morphology and laminar position of neurobiotin-filled cells was also compared with those of cells stained by the Golgi-Cox method. Some factors that may have contributed to the observed differences in muscarinic response profile are discussed. It is proposed that the selective muscarinic induction of the slow depolarizing afterpotential phenomenon in deep pyramidal cells may be important in olfactory cortical learning and memory processes.
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Affiliation(s)
- V Libri
- Department of Pharmacology, School of Pharmacy, London, U.K
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Abstract
True Blue, a retrograde fluorescent tracer, was used to investigate axonal outgrowth after grafting embryonic forebrain cholinergic tissue into the cholinergically-deafferented rat frontal cortex. Unilateral deafferentation was achieved by injecting alpha-amino-3-OH-4-isoxozole propionic acid (AMPA) into the ipsilateral nucleus basalis magnocellularis. Grafting occurred 3 weeks after the lesion. Eight to 10 weeks later, True Blue was injected bilaterally into the cortex at a superficial site which, on the transplanted side, was located at least 2 mm away from the transplant. Forty-eight h later, retrogradely labelled fluorescent neurones could be seen in the deepest part of the transplants. Some of these neurones were shown to be ChAt-positive, providing evidence of axonal outgrowth from transplanted cholinergic neurones into cholinergically-deafferented frontal cortex.
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Affiliation(s)
- M Calaminici
- Department of Neuroscience, Institute of Psychiatry, London, UK
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