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- Scopus: eid_2-s2.0-0031156933
- PMID: 9164929
- WOS: WOS:A1997XA06300013
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Article: Apoptosis during B lymphopoiesis in mouse bone marrow
Title | Apoptosis during B lymphopoiesis in mouse bone marrow |
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Authors | |
Issue Date | 1997 |
Publisher | American Association of Immunologists. The Journal's web site is located at http://www.jimmunol.org |
Citation | Journal Of Immunology, 1997, v. 158 n. 11, p. 5136-5145 How to Cite? |
Abstract | To evaluate the magnitude of cell death and the critical stages at which it occurs during B lymphopoiesis in mouse bone marrow (BM), we have examined the kinetics of apoptosis at defined stages of B cell differentiation. FACS-sorted B220+ BM cells exhibited a low incidence of morphologically apoptotic cells by electron microscopy. In freshly prepared BM suspensions, the incidence of hypodiploid cells detected by multiparameter flow cytometry was greater among large dividing B220+ surface lgM- (slgM-) precursor B cells and slgMlow immature B lymphocytes than among terminal deoxynucleotidyl transferase+ (TdT+) pro-B cells, small nondividing B220+slgM- precursors, and surface lgD+ mature B lymphocytes. During short-term culture, apoptotic cells, identified by both DNA content and in situ DNA strand break labeling, increased linearly with time without macrophage ingestion, providing an assay for the rate of entry into apoptosis. B220+ B lineage cells accumulated in apoptosis more rapidly than cells of other lineages. The apoptotic rate was greater among B220+slgM- precursor cells than slgM+ B cells, and was highest among B220+μ- pro-B cells. Coculture with stromal cells reduced the apoptotic rate of B220+slgM- precursors to a greater extent than that of slgM+ B lymphocytes. The results lead to estimates of the actual number of B lineage cells undergoing apoptosis per unit time in successive differentiation compartments. The findings indicate that, although influenced by local microenvironmental factors, apoptotic cell death occurs most markedly at two developmental stages associated with lg heavy chain gene rearrangement and Ag receptor expression, respectively. |
Persistent Identifier | http://hdl.handle.net/10722/148094 |
ISSN | 2023 Impact Factor: 3.6 2023 SCImago Journal Rankings: 1.558 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lu, L | en_US |
dc.contributor.author | Osmond, DG | en_US |
dc.date.accessioned | 2012-05-29T06:10:48Z | - |
dc.date.available | 2012-05-29T06:10:48Z | - |
dc.date.issued | 1997 | en_US |
dc.identifier.citation | Journal Of Immunology, 1997, v. 158 n. 11, p. 5136-5145 | en_US |
dc.identifier.issn | 0022-1767 | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/148094 | - |
dc.description.abstract | To evaluate the magnitude of cell death and the critical stages at which it occurs during B lymphopoiesis in mouse bone marrow (BM), we have examined the kinetics of apoptosis at defined stages of B cell differentiation. FACS-sorted B220+ BM cells exhibited a low incidence of morphologically apoptotic cells by electron microscopy. In freshly prepared BM suspensions, the incidence of hypodiploid cells detected by multiparameter flow cytometry was greater among large dividing B220+ surface lgM- (slgM-) precursor B cells and slgMlow immature B lymphocytes than among terminal deoxynucleotidyl transferase+ (TdT+) pro-B cells, small nondividing B220+slgM- precursors, and surface lgD+ mature B lymphocytes. During short-term culture, apoptotic cells, identified by both DNA content and in situ DNA strand break labeling, increased linearly with time without macrophage ingestion, providing an assay for the rate of entry into apoptosis. B220+ B lineage cells accumulated in apoptosis more rapidly than cells of other lineages. The apoptotic rate was greater among B220+slgM- precursor cells than slgM+ B cells, and was highest among B220+μ- pro-B cells. Coculture with stromal cells reduced the apoptotic rate of B220+slgM- precursors to a greater extent than that of slgM+ B lymphocytes. The results lead to estimates of the actual number of B lineage cells undergoing apoptosis per unit time in successive differentiation compartments. The findings indicate that, although influenced by local microenvironmental factors, apoptotic cell death occurs most markedly at two developmental stages associated with lg heavy chain gene rearrangement and Ag receptor expression, respectively. | en_US |
dc.language | eng | en_US |
dc.publisher | American Association of Immunologists. The Journal's web site is located at http://www.jimmunol.org | en_US |
dc.relation.ispartof | Journal of Immunology | en_US |
dc.subject.mesh | Animals | en_US |
dc.subject.mesh | Apoptosis | en_US |
dc.subject.mesh | B-Lymphocytes - Immunology - Pathology | en_US |
dc.subject.mesh | Bone Marrow - Immunology - Pathology | en_US |
dc.subject.mesh | Cell Differentiation | en_US |
dc.subject.mesh | Cells, Cultured | en_US |
dc.subject.mesh | Coculture Techniques | en_US |
dc.subject.mesh | Male | en_US |
dc.subject.mesh | Mice | en_US |
dc.subject.mesh | Mice, Inbred C3h | en_US |
dc.subject.mesh | Stromal Cells - Pathology | en_US |
dc.title | Apoptosis during B lymphopoiesis in mouse bone marrow | en_US |
dc.type | Article | en_US |
dc.identifier.email | Lu, L:liweilu@hkucc.hku.hk | en_US |
dc.identifier.authority | Lu, L=rp00477 | en_US |
dc.description.nature | link_to_subscribed_fulltext | en_US |
dc.identifier.pmid | 9164929 | - |
dc.identifier.scopus | eid_2-s2.0-0031156933 | en_US |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-0031156933&selection=ref&src=s&origin=recordpage | en_US |
dc.identifier.volume | 158 | en_US |
dc.identifier.issue | 11 | en_US |
dc.identifier.spage | 5136 | en_US |
dc.identifier.epage | 5145 | en_US |
dc.identifier.isi | WOS:A1997XA06300013 | - |
dc.publisher.place | United States | en_US |
dc.identifier.issnl | 0022-1767 | - |