Peritoneal cavity CD5 (Bla) B cells: Cytokine induced IgA secretion and homing to intestinal lamina propria in SCID mice

Peritoneal cavity CD5 (Bla) B cells: Cytokine induced IgA secretion and homing to intestinal lamina propria in SCID mice
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腹膜腔 CD5 (Bla) B 细胞:细胞因子诱导 SCID 小鼠 IgA 分泌并归巢至肠固有层

DOI:
10.1038/icb.1995.66
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发表时间:
1995
影响因子:
4
通讯作者:
JH. Eldridge
JH. Eldridge
中科院分区:
医学3区
文献类型:
--
作者:
K. Beagley;A. Murray;JR McGHEE;JH. Eldridge

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小鼠腹腔含有一种独特的B细胞群(Bla),具有高IgM/低IgD比率,CD5+ (Lyl), MAC - 1 +表型。这些细胞在个体发育早期出现,利用有限的免疫球蛋白V基因库,产生多反应性IgM抗体,并被认为是许多自身反应性免疫球蛋白的来源。来自嵌合小鼠的最新数据表明,这种B细胞群也含有在小肠固有层中发现的许多IgA浆细胞的前体。在目前的研究中,我们研究了这种细胞群分泌IgA(和IgG)以响应各种细胞因子的潜力。IL - 5单独或与IL - 2联合可显著增强IgG和IgA的分泌。细胞因子诱导的IgA分泌是由共同表达sIgA的cd5b细胞亚群的扩增引起的。将cd5b细胞过继转移到严重联合免疫缺陷(SCID)小鼠体内,导致sIgA+ B细胞在固有层再生,而周围淋巴结仅含有IgM+和部分IgG+ B细胞。CD5+ B细胞的转移也能重建血清IgM。受体SCID小鼠的IgG和IgA水平。这些研究表明,CD5 ' B细胞在体外培养时,具有分泌IgA和IgG的潜力,这是粘膜和遗忘反应的免疫球蛋白特征。这些细胞在过继转移到SCID小鼠后,也在肠固有层产生IgA浆细胞,进一步支持了该谱系细胞可能在粘膜表面免疫反应中起重要作用的假设。
The mouse peritoneal cavity contains a unique population of B cells (Bla) with a high IgM/low IgD ratio, CD5+ (Lyl), MAC‐1 + phenotype. These cells arise early in ontogeny, utilize a limited repertoire of immunoglobulin V genes, produce polyreactive IgM antibodies and have been implicated as the source of many auto‐reactive immunoglobulins. Recent data from chimeric mice suggest that this B cell population also contains the precursors of many IgA plasma cells found in the lamina propria of the small intestine. In the present study we have investigated the potential of this cell population to secrete IgA (and IgG) in response to various cytokines. IL‐5 alone, or in combination with IL‐2, greatly enhanced secretion of both IgG and IgA. Cytokine‐induced IgA secretion resulted from expansion of a subset of CD5 B cells co‐expressing sIgA. Adoptive transfer of CD5 B cells to severe combined immunodeficient (SCID) mice resulted in repopulation of lamina propria with sIgA+ B cells while peripheral lymph nodes contained only IgM+ and some IgG+ B cells. Transfer of CD5+ B cells also reconstituted serum IgM. IgG and IgA levels in recipient SCID mice. These studies demonstrate that CD5′ B cells have the potential to secrete IgA and IgG, immunoglobulins characteristic of mucosal and anamnestic responses, when cultured in vitro with the appropriate cytokines. These cells also give rise to IgA plasma cells in the intestinal lamina propria following adoptive transfer to SCID mice, further supporting the hypothesis that cells of this lineage may be important in immune responses at mucosal surfaces.
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发表时间: 1989-01-01
影响因子: 4.4
作者:
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通讯作者: Herzenberg, Leonore A.
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DOI: --
发表时间: 1984
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发表时间: 1984-01-01
期刊: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA-BIOLOGICAL SCIENCES
影响因子: --
作者:
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发表时间: 1993-04
影响因子: 4.4
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