An activated murine B cell lymphoma line (A‐20) produces a factor‐like activity which is functionally related to human natural killer cell stimulatory factor

An activated murine B cell lymphoma line (A‐20) produces a factor‐like activity which is functionally related to human natural killer cell stimulatory factor
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活化的鼠 B 细胞淋巴瘤系 (A-20) 产生与人类自然杀伤细胞刺激因子功能相关的因子样活性

DOI:
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发表时间:
1992
影响因子:
5.4
通讯作者:
A. Campos
A. Campos
中科院分区:
医学3区
文献类型:
--
作者:
J. Mengel;Leopoldo Daré;G. M. Dare;Maristela Delgado;A. Nomizo;J. Silva;A. Campos

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在本文中,我们发现从脂多糖(LPS)或phorbol 12 -肉豆蔻酸13 -醋酸酯(PMA)刺激的A - 20 B细胞淋巴瘤中提取的上清液能够诱导正常B细胞以T细胞依赖的方式分泌多克隆免疫球蛋白(Ig)。抗干扰素γ的单克隆抗体可以阻断这种活性,但抗白细胞介素(IL)‐2、IL‐4、IL‐5、IL‐6、IL‐10和粒细胞巨噬细胞集落刺激因子(GM‐CSF)的单克隆抗体或抗肿瘤坏死因子(TNF)‐α的多克隆抗体不能阻断这种活性。此外,A‐20上清液诱导正常小鼠脾细胞产生可测量量的干扰素γ,并激活自然杀伤(NK)细胞。在Sephacryl S‐200色谱柱上对富含因子的上清进行分离,发现因子活性位于分子质量为160-150 kDa和80-70 kDa的组分中。在A‐20上清中发现的生物活性与最近克隆的人IL‐12/NK细胞刺激因子的生物活性非常相似。这些结果表明,a‐20 B细胞淋巴瘤产生的人IL‐12存在与小鼠相似的因子。
In the present article we show that supernatants derived from lipopolysaccharide (LPS) or phorbol 12‐myristate 13‐acetate (PMA)‐stimulated A‐20 B cell lymphoma are able to induce polyclonal immunoglobulin (Ig) secretion by normal B cells in a T cell‐dependent manner. This activity could be blocked by neutralizing monoclonal antibodies against interferon‐γ, but not by monoclonal antibodies against interleukin (IL)‐2, IL‐4, IL‐5, IL‐6, IL‐10 and granulocyte macrophage colony‐stimulating factor (GM‐CSF) or even a polyclonal antibody against tumor necrosis factor (TNF)‐α. Furthermore, A‐20 supernatants induced the production of measurable amounts of interferon‐γ by normal murine spleen cells and activates natural killer (NK) cells. Fractionation of factor‐rich supernatants on a Sephacryl S‐200 column revealed that the factor activity is located in the fractions corresponding to a molecular mass of 160–150 kDa and 80–70 kDa. The biological activities found in the A‐20 supernatant are very similar to the ones described for the recently cloned human IL‐12/NK cell stimulatory factor. These results suggest the existence of a murine analogous factor for the human IL‐12 produced by A‐20 B cell lymphoma.
DOI: --
发表时间: 1988
期刊: The American journal of pathology
影响因子: --
作者:
Willoughby,PB;Jennette,JC;Haughton,G
通讯作者: Haughton,G
DOI: 10.1016/s0065-2776(08)60692-6
发表时间: 1989
影响因子: --
作者:
E. Vitetta;R. Fernandez-Botran;C. Myers;V. Sanders
通讯作者: E. Vitetta;R. Fernandez-Botran;C. Myers;V. Sanders
B 细胞的抗原呈递及其在 T-B 相互作用中的意义。
DOI: 10.1016/s0065-2776(08)60348-x
发表时间: 1986
影响因子: --
作者:
Chesnut,RW;Grey,HM
通讯作者: Grey,HM
DOI: 10.4049/jimmunol.146.9.3074
发表时间: 1991-05
影响因子: 4.4
作者:
S. Wolf;P. Temple;Michiko Kobayashi;D. Young;M. Dicig;L. Lowe;R. Dzialo;L. Fitz;C. Ferenz;R. Hewick
通讯作者: S. Wolf;P. Temple;Michiko Kobayashi;D. Young;M. Dicig;L. Lowe;R. Dzialo;L. Fitz;C. Ferenz;R. Hewick
DOI: 10.1093/intimm/2.9.821
发表时间: 1990-09-01
影响因子: 4.4
作者:
OGARRA, A;STAPLETON, G;HOWARD, M
通讯作者: HOWARD, M