Transgenic expression of P1A induced thymic tumor: a role for onco-fetal antigens in tumorigenesis.

Transgenic expression of P1A induced thymic tumor: a role for onco-fetal antigens in tumorigenesis.
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DOI:
10.1371/journal.pone.0013439
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发表时间:
2010-10-15
期刊:
影响因子:
3.7
通讯作者:
Liu Y
Liu Y
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Li CS;Chen C;Zheng P;Liu Y

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P1A是第一个已知的肿瘤排斥抗原。它在胚胎干细胞和多种肿瘤中表达,但在除睾丸和胎盘外的成人组织中沉默。因此,P1A代表癌胚抗原的原型。为了测试P1A在肿瘤发生中的潜在功能,我们使用了在淋巴细胞中表达P1A的转基因小鼠。我们观察到免疫缺陷宿主P1A转基因小鼠在7个月大后发生胸腺肿瘤,与对照组相比存活率较低。7例肿瘤中大多数显示B细胞系标记。与对照骨髓细胞相比,P1A转基因骨髓细胞具有更高的增殖能力和更多的潜在祖细胞。据我们所知,我们的数据提供了第一个例子,癌胎儿抗原可以促进肿瘤的发生。
P1A is the first known tumor rejection antigen. It is expressed in embryonic stem cells and multiple tumors but is silent in adult tissues except for the testis and placenta. Therefore, P1A represents a prototype for onco-fetal antigens. To test the potential function of P1A in tumorigenesis, we used a transgenic mouse expressing P1A in lymphoid cells. We observed that immunodeficient host P1A transgenic mice developed thymic tumors after 7 months of age and had shorter survival rates compared to control groups. Most of the 7 examined tumors displayed B cell lineage markers. The P1A transgenic bone marrow cells had higher proliferation ability and more potential progenitors compared to control bone marrow cells. To our knowledge, our data provided the first example that onco-fetal antigen can promote tumorigenesis.
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