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Ganshina IV. Serous cavities of coelomic origin as possible organs of the immune system. Part 1. ACTA ACUST UNITED AC 2016. [DOI: 10.1134/s2079086416060025] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Veneri D, Franchini M, Vella A, Tridente G, Semenzato G, Pizzolo G, Ortolani R. Changes of human B and B-1a peripheral blood lymphocytes with age. Hematology 2013; 12:337-41. [PMID: 17654062 DOI: 10.1080/10245330701255270] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Abstract
In 2057 consecutive subjects admitted to the Department of Pathology, Section of Immunology of the Verona University Hospital, CD19+ and CD5/CD19 double positive cells were determined to assess the behaviour of total peripheral B-lymphocytes and B-1a (CD5+) compartments in humans during aging. We show that the absolute number of total B lymphocytes increases about three-fold from the baseline conditions in the first year of life and progressively decreases until adult age. A slower decrease was detected from the adult age onwards. A similar behaviour has been observed within the B-1a subset of B-lymphocytes, although the decrease after the adult age seems more pronounced. Possible physiological explanations and/or implications for the disease states are taken into account.
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Affiliation(s)
- Dino Veneri
- Section of Hematology, Department of Clinical and Experimental Medicine, University of Verona, Verona, Italy.
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Oliveira FL, Chammas R, Ricon L, Fermino ML, Bernardes ES, Hsu DK, Liu FT, Borojevic R, El-Cheikh MC. Galectin-3 regulates peritoneal B1-cell differentiation into plasma cells. Glycobiology 2009; 19:1248-58. [PMID: 19696234 DOI: 10.1093/glycob/cwp120] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Extracellular galectin-3 participates in the control of B2 lymphocyte migration and adhesion and of their differentiation into plasma cells. Here, we analyzed the role of galectin-3 in B1-cell physiology and the balance between B1a and B1b lymphocytes in the peritoneal cavity. In galectin-3(-/-) mice, the total number of B1a lymphocytes was lower, while B1b lymphocyte number was higher as compared to wild-type mice. The differentiation of B1a cells into plasma cells was associated with their abnormal adhesion and location on the mesentery. The B220 and CD43, constitutively expressed by B1 lymphocytes, were respectively up- and downregulated in galectin-3(-/-) mice. Mononuclear cells were strongly adhered to the mesenteric membranes of both CD43(-/-) and galectin-3(-/-) mice, but in contrast to CD43(-/-) mice, the accumulation of B1 cells in peritoneal membranes in galectin-3(-/-) mice was accompanied by their functional differentiation into plasma cells. We have shown that in the absence of galectin-3, B1-cell differentiation into plasma cells is favored and the dynamic equilibrium of B1-cell populations in the peritoneum is maintained through a compensatory increase in B1b lymphocytes.
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Affiliation(s)
- Felipe L Oliveira
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
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Mishima Y, Ishihara S, Amano Y, Oshima N, Kadota C, Otani A, Moriyama I, Li YY, Aziz MM, Kinoshita Y. Alterations of peripheral blood CD5+ B cells in inflammatory bowel disease. Scand J Gastroenterol 2009; 44:172-9. [PMID: 18830898 DOI: 10.1080/00365520802433223] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
OBJECTIVE CD5(+) B cells comprise a unique subset of B cells that modulates innate as well as autoimmune systems. The aim of this study was to investigate alterations of the circulating CD5(+) B-cell subset in patients with inflammatory bowel disease (IBD) by evaluating various clinical parameters, including therapeutic regimens. MATERIAL AND METHODS Thirty-four patients with ulcerative colitis (UC), 19 patients with Crohn's disease (CD), and 46 healthy control subjects were enrolled in this study. CD5(+) B cells in peripheral blood collected from each subject were analyzed by flow cytometry. Multiple regression analysis was carried out to evaluate the factors related to the circulating CD5(+) B-cell subset in the IBD patients. In an in vitro examination, dexamethasone-induced apoptosis in peripheral blood B cells was examined by detecting cell surface binding of the annexin-V antibody. RESULTS Age and gender in the control subjects did not influence the circulating CD5(+) B-cell subset. Multiple regression analysis showed that the presence of UC, corticosteroid therapy, and number of white blood cells in peripheral blood each had a significant influence in decreasing the number of circulating CD5(+) B cells in the IBD patients. Furthermore, in vitro results showed that dexamethasone treatment significantly induced apoptosis in CD5(+) B cells, though apoptosis was similarly observed in CD5(-) B cells. CONCLUSIONS CD5(+) B cells may be involved in the pathogenesis of UC, and modulation of this subset by corticosteroid therapy may play a role in the treatment of IBD patients.
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Affiliation(s)
- Yoshiyuki Mishima
- Department of Internal Medicine II, Shimane University School of Medicine, Japan
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Peripheral blood CD5-positive B lymphocytes (B-1a cells) after allogeneic stem cell transplantation for acute myeloid leukaemia in humans. BLOOD TRANSFUSION = TRASFUSIONE DEL SANGUE 2009; 6:220-4. [PMID: 19112737 DOI: 10.2450/2008.0010-08] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
BACKGROUND Only few data are available in literature regarding the reconstitution of B- 1a cells after allogeneic bone marrow transplantation performed for haematological malignancies. METHODS In this study we used flow cytometry to assess the reconstitution of the peripheral blood B-1a cell compartment after allogeneic peripheral blood stem cell transplantation. Cytometric analyses were performed over time on 11 consecutive patients undergoing allogeneic peripheral blood stem cell transplantation for acute myeloid leukaemia in our Haematology Unit and the results were compared with available data regarding B- 1a cell reconstitution after allogeneic bone marrow stem cell transplantation. RESULTS In spite of an earlier recovery of B-1a cells in the peripheral blood after allogeneic bone marrow transplantation, the reconstitution of this B-cell subset was similar, regardless of the source of stem cells employed. CONCLUSIONS Further studies are necessary in order to clarify the origin of B-1a cells in humans in health and illness.
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Madureira P, Cunha EM, Aguas AP. Acute depletion and recovery of peritoneal B-1 lymphocytes in BALB/c mice after a single injection of mercury chloride. Immunopharmacol Immunotoxicol 2007; 29:311-22. [PMID: 17849274 DOI: 10.1080/08923970701513518] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The acute toxicity of mercury (Hg) to B cells was studied in the peritoneal cavity of BALB/c mice, a coelomic space where both B-1 and B-2 subsets of B lymphocytes are present. Up to 24 hr after a single in situ Hg injection, the peritoneal cavity became virtually devoid of lymphocytes, particularly of the B-1 subset. Lymphocyte depletion was more severe for B than T cells. This depletion was associated with partial lymphocyte activation (CD69(+)) at 6 hr of treatment and it was due to apoptosis rather than to necrosis. Partial recovery of both B and T cells was observed in the peritoneal cavity 48 hr after the Hg injection. The phenomenon was followed by a second decrease in peritoneal lymphocytes 72 hr after Hg. Neutrophils that entered the peritoneal cavity because of the Hg injection were resistant to apoptosis. No significant changes in lymphocyte number or subpopulation were found in the spleen and thymus of the mice up to 72 hr after the Hg treatment. We concluded that B lymphocytes were severely affected by the toxic effects of Hg. Our data suggest that Hg-induced unbalance in the repertoire of B cells, of the B-1 subset in particular, may result later in the secretion of the high titres of pathogenic autoantibodies that are found in the Hg-induced lupus disorder of BALB/c mice.
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Affiliation(s)
- P Madureira
- Laboratory of Immunology Mário-Arala Chaves, Abel Salazar Institute for Biomedical Sciences, ICBAS, University of Porto, Porto, Portugal.
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Fontán MP, Máñez R, Rodríguez-Carmona A, Peteiro J, Martínez V, García-Falcón T, Domenech N. Serum levels of anti-alphaGalactosyl antibodies predict survival and peritoneal dialysis-related enteric peritonitis rates in patients undergoing renal replacement therapy. Am J Kidney Dis 2007; 48:972-82. [PMID: 17162152 DOI: 10.1053/j.ajkd.2006.08.027] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2006] [Accepted: 08/15/2006] [Indexed: 11/11/2022]
Abstract
BACKGROUND Anti-Galalpha1-3Gal antibodies (anti-alphaGal) represent a significant fraction of natural antibodies and were implicated in several disease states, yet their origin and physiological significance remain largely undisclosed. METHODS Under a prospective observational design, we estimated anti-alphaGal immunoglobulin G (IgG)/IgM and antipig hemolytic antibody (APA) levels in 133 patients starting dialysis therapy and again after a 1-year follow-up. We used baseline data to show correlations with demographic, nutritional, inflammatory, and anemia markers and analyzed their correlation with outcomes by using univariate and multivariate strategies of survival analysis. RESULTS Serum anti-alphaGal and APA levels showed wide baseline variability, but remained relatively stable in time. Both were measurable in dialysate of peritoneal dialysis (PD) patients, showing close correlation to serum levels. We observed no association between levels of anti-alphaGal/APA and nutritional markers, but showed direct correlations of anti-alphaGal IgM (P = 0.005) and APA levels (P = 0.001) with tumor necrosis factor alpha (TNF-alpha) levels. High APA levels also were associated with severe anemia (P = 0.006). High baseline anti-alphaGal IgM (P = 0.03) and APA levels (P = 0.045) predicted later risk for enteric peritonitis in PD patients. Finally, univariate and multivariate analyses showed a consistent association between high baseline anti-alphaGal IgM (P = 0.014) and APA (P = 0.021) levels and global risk for mortality during follow-up. CONCLUSION Anti-alphaGal IgM and APA levels at the start of dialysis therapy are significant predictors of later risk for mortality and, in PD patients, enteric peritonitis. Both correlate directly with TNF-alpha levels and, in the case of APA, severity of anemia in these patients.
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Affiliation(s)
- Miguel Pérez Fontán
- Division of Nephrology and Laboratory of Biochemistry, Hospital Juan Canalejo, Xubias 84, 15006 A Coruña, Spain.
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Hinkley KS, Chiasson RJ, Prior TK, Riggs JE. Age-dependent increase of peritoneal B-1b B cells in SCID mice. Immunology 2002; 105:196-203. [PMID: 11872095 PMCID: PMC1782648 DOI: 10.1046/j.1365-2567.2002.01360.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2001] [Revised: 10/25/2001] [Accepted: 10/26/2001] [Indexed: 12/20/2022] Open
Abstract
The impact of increasing age upon immunoglobulin production and B-lymphocyte generation in "leaky" severe combined immune-defective (SCID) mice was examined by enzyme-linked immunosorbent assay and flow cytometry. By 1 year of age, the mice had normal numbers of B cells in their peritoneal cavity, while their spleen had very few immunoglobulin M-positive (IgM+) cells. The majority of B cells expressed the CD11b marker characteristic of the B-1b subset. B-1a (CD5+) cells were present at a lower frequency and B-2 cells were absent. The frequency of mice producing detectable immunoglobulin increased with age, and isotype diversity within individual mice was variable. IgM production was most frequently observed followed by IgG3 and IgG2a, then IgG1, and finally IgA. The selective persistence of the B-1 B-cell subset in the peritoneal cavity of aging SCID mice is a natural model for the study of those genetic and environmental influences that determine lymphocyte longevity.
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Affiliation(s)
- Kirk S Hinkley
- Department of Biology, Rider University, 2803 Lawrenceville Road, Lawrenceville, NJ 08648-3099, USA
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Anzai H, Ikawa Y, Atsumi T. Stem Cell Factor and Interleukin-3 Induce Stepwise Generation of Erythroid Precursor Cells from a Basic Fibroblast Growth Factor-Dependent Hematopoietic Stem Cell Line, A-6. Biochem Biophys Res Commun 2001; 282:940-6. [PMID: 11352642 DOI: 10.1006/bbrc.2001.4674] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A multipotent immature myeloid cell population was produced from a basic fibroblast growth factor (bFGF)-dependent hematopoietic stem cell line, A-6, when cultured with stem cell factor (SCF) replacing bFGF. Those cells were positive for stem cell markers, c-kit and CD34, and a myeloid cell marker, F4/80. Some cell fractions were also positive for Mac-1, a macrophage marker or Gr-1, a granulocytic maker, but negative for an erythroid marker TER119. They also showed the expression of mRNA for the myeloid-specific PU.1 but did not that for the erythroid-specific GATA-1. Among various cytokines, interleukin-3 (IL-3) induced erythroid precursor cells that expressed the erythroid-specific GATA-1 and beta-major globin. The quantitative analysis showed that erythroid precursor cells were newly produced from the immature myeloid cells by cultivation with IL-3. SCF and IL-3 induced stepwise generation of erythroid precursor cells from an A-6 hematopoietic stem cell line.
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Affiliation(s)
- H Anzai
- Laboratory of Molecular Cell Science, RIKEN Tsukuba Institute, 3-1-1, Koyadai, Tsukuba, Ibaraki, 305-0074, Japan
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Herzenberg LA, Baumgarth N, Wilshire JA. B-1 cell origins and VH repertoire determination. Curr Top Microbiol Immunol 2001; 252:3-13. [PMID: 11125487 DOI: 10.1007/978-3-642-57284-5_1] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- L A Herzenberg
- Genetics Department, Stanford University Medical School, Stanford, California 94305-5318, USA
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Foussat A, Balabanian K, Amara A, Bouchet-Delbos L, Durand-Gasselin I, Baleux F, Couderc J, Galanaud P, Emilie D. Production of stromal cell-derived factor 1 by mesothelial cells and effects of this chemokine on peritoneal B lymphocytes. Eur J Immunol 2001; 31:350-9. [PMID: 11180098 DOI: 10.1002/1521-4141(200102)31:2<350::aid-immu350>3.0.co;2-0] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
B1a lymphocytes accumulate and proliferate in the peritoneal cavity. Stromal cell-derived factor 1 (SDF-1) is a chemotactic and growth promoting factor for B cell precursors. It is required for fetal liver B cell lymphopoiesis, which generates mostly B1a lymphocytes. Using immunohistochemistry with an anti-SDF-1 monoclonal antibody, we found that SDF-1 was produced by peritoneal mesothelial cells in adult mice. Peritoneal B1a lymphocytes expressed a functional SDF-1 receptor, as shown by actin polymerization experiments. In vitro, SDF-1 stimulated migration, proliferation of a minority of peritoneal B1a lymphocytes, and prevented apoptosis in a large fraction of cells. B1a cells migrating in response to SDF-1 were largely enriched in the CD5(high)CD43(high)B220(-)CD1d(-) subpopulation. In vivo, neutralization of SDF-1 for 3 weeks significantly decreased the number of peritoneal B1 cells. SDF-1 also acted on peritoneal B2 cells. These findings show that after the cessation of B cell lymphopoiesis in the liver, around birth, the persistence of B1a cells remains SDF-1 dependent, and that SDF-1 production by mesothelial cells plays a role in the peritoneal location of B1a cells. Thus, the role of mesothelial cells for B1a cells in adults may be similar to that of SDF-1-producing biliary ductal plate cells in the fetus, and to that of bone marrow stromal cells for B2 cell precursors.
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Affiliation(s)
- A Foussat
- INSERM U131, Institut Paris-Sud sur les Cytokines, Clamart, France
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Chishima F, Hayakawa S, Hirata Y, Nagai N, Kanaeda T, Tsubata K, Satoh K. Peritoneal and peripheral B-1-cell populations in patients with endometriosis. J Obstet Gynaecol Res 2000; 26:141-9. [PMID: 10870308 DOI: 10.1111/j.1447-0756.2000.tb01298.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVE The purpose of this study was to investigate the frequency of B-1 cells in the peritoneal cavity and peripheral blood of patients with endometriosis. MATERIALS AND METHODS We examined 31 patients with endometriosis and 14 normal nonpregnant women. Peripheral blood cells and peritoneal exudate cells (PECs) were stained with FITC or PE-labeled anti-CD5/CD19 monoclonal antibodies. Immunofluorescence analysis was performed using a flow cytometer. The significance of differences between the patient and control groups was determined by the non-parametric Mann-Whitney test. RESULTS There was no significant difference in the percentages of B-1 cells in the peripheral blood of women with and without endometriosis (median, 22.7%; range, 4.7-92.3% vs median, 20.05%; range, 11.1-12.6%, respectively). Endometriosis patients with antinuclear antibodies (ANAs) demonstrated significantly elevated B-1 cells compared to both endometriosis patients without ANAs and normal controls (p < 0.005 and p < 0.05, respectively). Endometriosis patients demonstrated significantly higher B-1 cell populations (B-1 cells/total B-cell ratio) in PECs than did non-endometriosis patients (p < 0.05). CONCLUSIONS The peripheral B-1-cell population in patients with endometriosis is related to ANA production. B-1 cells might play important roles in the development of endometriosis through autoantibody production.
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Affiliation(s)
- F Chishima
- Department of Obstetrics and Gynecology, Nihon University School of Medicine, Tokyo, Japan
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Soro PG, Morales-A. P, Martínez-M. JA, Morales-A. S, Copín SG, Marcos MAR, Gaspar ML. Differential Involvement of the Transcription Factor Blimp-1 in T Cell-Independent and -Dependent B Cell Differentiation to Plasma Cells. THE JOURNAL OF IMMUNOLOGY 1999. [DOI: 10.4049/jimmunol.163.2.611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Abstract
Along humoral immune responses, different stimuli drive the differentiation of B lymphocytes to Ig-secreting plasma cells in discrete microenvironments. The Blimp-1 transcription factor is up-regulated early during the transition of mature B cells to IgM-secreting plasma cells. In the present study, we have examined the requirement of Blimp-1 in plasma cell formation after both T cell-independent (LPS) and -dependent (CD40 + IL-4, Th cell lines) stimulation of spleen B cells. B lymphocyte-induced maturation protein (Blimp-1) was expressed early after in vitro LPS stimulation, mainly in a population of IgM+Syndecan+CD43+ preplasma cells. In contrast, the BSAP transcription factor expressed in mature B cells was down-regulated during the differentiation to plasma cells. Treatment of these cultures with Blimp-1-specific antisense phosphorothioate oligonucleotides suppressed both Blimp-1 protein levels and the emergence of IgM+Syndecan+ cells and plasma cells. However, T-B cell cocultures of spleen B cells from C3H/HeJ (H-2k) mice and syngeneic autoreactive SR.10 Th2 cells submitted to the anti-Blimp-1 therapy did not show any significant reduction in IgM- and IgG1-secreting plasma cell formation. Spleen B cells treated with anti-CD40 mAb + IL-4 differentiated to IgG1-secreting cells without significant transcription of the Blimp-1 gene; anti-Blimp-1 treatment subsequently did not have any effect in the later cultures. Altogether, these results suggest that Blimp-1 transcription factor specifically promotes T cell-independent B cell differentiation to plasma cells, probably at preplasma cell stages. In contrast, T cell-dependent plasma cell formation likely evolves through Blimp-1-independent pathways.
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Affiliation(s)
- Pilar G. Soro
- *Centro Nacional de Biología Fundamental, Instituto de Salud Carlos III, Majadahonda, Spain; and
| | - Patricia Morales-A.
- †Centro de Biología Molecular S.O., Consejo Superior de Investigaciones Cientificas-Universidad Autónoma, Campus de Cantoblanco, Madrid, Spain
| | - Jose A. Martínez-M.
- *Centro Nacional de Biología Fundamental, Instituto de Salud Carlos III, Majadahonda, Spain; and
| | - Susana Morales-A.
- *Centro Nacional de Biología Fundamental, Instituto de Salud Carlos III, Majadahonda, Spain; and
| | - Sergio G. Copín
- †Centro de Biología Molecular S.O., Consejo Superior de Investigaciones Cientificas-Universidad Autónoma, Campus de Cantoblanco, Madrid, Spain
| | - Miguel A. R. Marcos
- †Centro de Biología Molecular S.O., Consejo Superior de Investigaciones Cientificas-Universidad Autónoma, Campus de Cantoblanco, Madrid, Spain
| | - María-Luisa Gaspar
- *Centro Nacional de Biología Fundamental, Instituto de Salud Carlos III, Majadahonda, Spain; and
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Anzai H, Nagayoshi M, Obata M, Ikawa Y, Atsumi T. Self-renewal and differentiation of a basic fibroblast growth factor-dependent multipotent hematopoietic cell line derived from embryonic stem cells. Dev Growth Differ 1999; 41:51-8. [PMID: 10445502 DOI: 10.1046/j.1440-169x.1999.00412.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Despite the accumulation of informat on on the origin of hematopoietic stem cells, it is still unclear how these cells are generated in ontogeny. Isolation of cell lines equivalent to early embryonic hematopoietic progenitor cells can be helpful. A multipotent hematopoietic progenitor cell line, A-6, was isolated from H-1 embryonic stem (ES) cells. The self-renewal of A-6 cells was supported by basic-fibroblast growth factor (b-FGF) and their differentiation into definitive erythroid cells, granulocytes and macrophages was induced after co-culture with ST-2 stromal cells. A-6 cells were positive for the surface markers of hematopoietic stem cell, c-kit, CD31, CD34, Flt3/Flk2, PgP-1, and HSA, but were negative for that of the differentiated cells. Reverse transcription-polymerase chain reaction analysis showed that A-6 cells produced mRNA from SCL/tal-1 and GATA-2 genes. Among various cytokines examined, on y stem cell factor (SCF) and Flt3/Flk2 ligand (FL) supported the proliferation of A-6 cells instead of b-FGF. The FL, as well as b-FGF, supported the self-renewal of A-6 cells, whereas SCF induced differentiation into myeloid cells. A-6 cells will be useful for the characterization of hematopoietic progenitor cells derived from ES cells and provide a model system to realize the control mechanisms between self-renewal and different ation of hematopoietic stem cells.
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Affiliation(s)
- H Anzai
- Department of Retroviral Regulation, Tokyo Medical and Dental University, Japan
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Lu LS, Auerbach R. Characterization and Differentiation of an Early Murine Yolk Sac-Derived IL-7-Independent Pre-Pro-B Cell Line. THE JOURNAL OF IMMUNOLOGY 1998. [DOI: 10.4049/jimmunol.161.3.1284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Abstract
We describe a unique, stable pre-pro-B cell line (YS-PPB) derived from AA4.1+ yolk sac cells from day 10 mouse embryos. This cell line, discovered fortuitously during the course of studies of in vitro B cell differentiation, is independent of IL-7 supplementation for long term expansion in vitro. YS-PPB cells as well as clonal sublines expressed AA4.1, CD43, B220, Sca-1, CD19, heat stable antigen, MHC class I, IL-7R, and FcγR, but did not express cytoplasmic μ-chain, surface IgM (sIgM), or MHC class II molecules. PCR analysis showed that the cells expressed TdT, λ5, and RAG-1 genes, but that their Ig genes were still in germline configuration. The cell line was dependent on direct contact with S17 stromal cells for growth, but, in contrast to bone marrow stem cells, required no additional growth factors for maintenance and expansion. When stimulated with IL-7 and LPS, YS-PPB cells and cells from all tested clonal sublines differentiated into sIgM+ B cells in vitro. Irradiated mice reconstituted with YS-PPB cells yielded spleens containing 38% sIgM+ donor-derived B cells, demonstrating that YS-PPB cells, although stably arrested in development at the boundary between pre-pro-B and pro-B stages of B cell differentiation, still retain their competence to differentiate into mature, Ig-producing B cells when transferred to a normal host environment. Thus, this new cell line can provide a reproducible source of B cell precursors arrested at that critical time in B cell differentiation when the machinery for Ig gene rearrangement is in place but rearrangement has not yet occurred.
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Affiliation(s)
- Li-Sheng Lu
- Laboratory of Developmental Biology, University of Wisconsin, Madison, WI 53706
| | - Robert Auerbach
- Laboratory of Developmental Biology, University of Wisconsin, Madison, WI 53706
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Sanchez-Movilla A, San Roman R, Salas Anton C, Morales P, Copin SG, Cuervas-Mons V, Marcos MA. Induction of peripheral chimerism in an allogenic model of small bowel transplantation with intrathymic inoculation of donor-derived cells. Transplant Proc 1997; 29:1067-9. [PMID: 9123202 DOI: 10.1016/s0041-1345(96)00403-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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17
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Velupillai P, Sypek J, Harn DA. Interleukin-12 and -10 and gamma interferon regulate polyclonal and ligand-specific expansion of murine B-1 cells. Infect Immun 1996; 64:4557-60. [PMID: 8890206 PMCID: PMC174412 DOI: 10.1128/iai.64.11.4557-4560.1996] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
B-1 cells (CD5+ B220+) are a self-replenishing lineage of B cells which are autoreactive and capable of producing large amounts of interleukin-10 (IL-10). In mice experimentally infected with the human helminth parasite Schistosoma mansoni, expansion of B-1 cells is seen in the peritoneal cavity just prior to egg laying. In naive mice, B-1 cell expansion can be elicited by intraperitoneal injection of saline soluble egg antigens (SEA) or the polylactosamine sugar lacto-N-fucopentaose III (LNFPIII), which contains the Lewis-X trisaccharide. In this study, we demonstrate that LNFPIII is the major stimulus in SEA responsible for expansion of B-1 cells, since SEA-induced B-1 outgrowth is blocked by multiple injections of non-cross-linked free LNFPIII. IL-10 is an autocrine growth factor for B-1 cells, and we show that B-1 outgrowth after SEA and LNFPIII administration is inhibited by injection of anti-IL-10 antibodies. Furthermore, SEA- and LNFPIII-induced expansion of B-1 cells is inhibited by in vivo administration of recombinant murine IL-12 or recombinant gamma interferon. These data suggest that activation and expansion of IL-10-producing B-1 cells are governed via cross-regulatory cytokines.
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Affiliation(s)
- P Velupillai
- Department of Tropical Public Health, Harvard School of Public Health, Boston, Massachusetts 02115, USA
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