期刊
HUMAN REPRODUCTION
卷 23, 期 10, 页码 2194-2201出版社
OXFORD UNIV PRESS
DOI: 10.1093/humrep/den262
关键词
GAGE; MAGE-A; human development; hESC; teratoma
资金
- Danish Cancer Society
- A. P. Moller and Chastine Mc-Kinney Moellers Foundation
- Augustinus Foundation
- Wedell-Wedellsborg Foundation
BACKGROUND: Expression of cancer/testis-associated proteins (CTAs) has traditionally been considered to be restricted to germ cells in normal tissues and to different types of malignancies. We have evaluated the potential role of CTAs in early human development. METHODS: Using immunohistochemistry and RT-PCR, we investigated the expression of CTAs in differentiated human embryonic stem cells (hESC) and in late embryos and early fetuses. RESULTS: We found that melanoma antigen A (MAGE-A) family members were expressed during differentiation of hESC to embryoid bodies and in teratomas, and overlapped with expression of the neuroectodermal markers beta-tubulin 3, Pax6 and nestin. A widespread expression of MAGE-A was also observed in neurons of the early developing central nervous system and peripheral nerves. G antigen (GAGE) expression was present in the early ectoderm of embryos, including cells of the ectodermal ring and apical epidermal ridge. Neuroectodermal cells in the floor plate and adjacent processes and endfeet of radial glial cells also expressed GAGE. In addition, GAGE family members were expressed in the peripheral adrenal cortex of 6-9-week-old embryos and fetuses, which specifically correlated with massive cellular proliferation and establishment of the definitive and fetal zones. Overlapping expression of MAGE-A and GAGE proteins occurred in migrating primordial germ cells. CONCLUSIONS: Our results show that CTAs, in addition to their role in germ cells, may be involved in early development of various types of somatic cells, and suggest that they are implicated in specific differentiation processes.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据