{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,3]],"date-time":"2026-10-03T18:50:07Z","timestamp":1791053407927,"version":"4.1.0"},"reference-count":60,"publisher":"Oxford University Press (OUP)","issue":"5","license":[{"start":{"date-parts":[[2007,9,1]],"date-time":"2007-09-01T00:00:00Z","timestamp":1188604800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/pages\/standard-publication-reuse-rights"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2007,9,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Interacting with T cells, cytokine-producing B cells play a critical protective role in autoimmune diseases. However, the interaction between malignant B and T cells remains to be fully elucidated. In a previous study, we have reported that ligation of CCL19-CCR7 and CXCL13-CXCR5 activates paternally expressed gene 10 (PEG10), resulting in an enhancement of apoptotic resistance in B-cell acute lymphocytic leukemia (B-ALL) CD23+CD5+ B cells. Here, we report that B-ALL CD23+CD5+ B cells produce IL-10 at high level, which can be further elevated by costimulation with CCL19 and CXCL13. CCL19\/CXCL13-activated B-ALL CD23+CD5+ B cells, in turn, increase IL-10 expression in syngeneic CD8+ T cells in a B cell-derived IL-10-dependent manner and requiring a cell-cell contact. IL-10 secreted from B-ALL CD23+CD5+ B cells in vitro impairs tumor-specific CTL responses of syngeneic CD8+ T cells. The impairment of cytotoxicity of syngeneic CD8+ T cells is escalated by means of CCL19\/CXCL13-induced up-regulation of IL-10 from B-ALL CD23+CD5+ B cells. Moreover, using a short hairpin RNA to knockdown PEG10, we provide direct evidence that increased expression of PEG10 in B-ALL CD23+CD5+ B cells is involved in malignant B-T cell interaction, contributing to the up-regulation of IL-10 expression, as well as to the impairment of cytotoxicity of syngeneic CD8+ T cells. Thus, malignant B-ALL CD23+CD5+ B cells play an immunoregulatory role in controlling different inflammatory cytokine expressions. IL-10 may be one of the critical cellular factors conferring B-ALL CD23+CD5+ B cells to escape from host immune surveillance.<\/jats:p>","DOI":"10.4049\/jimmunol.179.5.2880","type":"journal-article","created":{"date-parts":[[2014,4,18]],"date-time":"2014-04-18T19:17:46Z","timestamp":1397848666000},"page":"2880-2888","source":"Crossref","is-referenced-by-count":15,"title":["CCL19 and CXCL13 Synergistically Regulate Interaction between B Cell Acute Lymphocytic Leukemia CD23+CD5+ B Cells and CD8+ T Cells"],"prefix":"10.1093","volume":"179","author":[{"given":"Xingbing","family":"Wang","sequence":"first","affiliation":[{"name":"Department of Hematology, Anhui Medical University Affiliated Provincial Hospital , Hefei ,","place":["China"]},{"name":"Departments of Immunology and Pathphysiology and Laboratory of Allergy and Clinical Immunology, Institute of Allergy and Immune-Related Diseases and Center for Medical Research, Wuhan University School of Medicine , Wuhan 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