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2008年4月18日发表于Cell(《细胞》)的一篇iPS 细胞论文, 作者Jaenisch等写道:
"as albumin gene expression marks heterogeneous cells populations in the liver in addition to hepatocytes, including oval cells that play an important role in liver regeneration and might serve as adult liver stem cells, the question of reprogramming terminally differentiated cells remains unresolved."
这段话是直接针对Yamanaka今年2月14日Science(《科学》)论文的下面一段说法而言的:
"iPS-Hep cells were derived from hepatocytes or other albumin-expressing cells, nut not from undifferentiated cells that do not express albumin. "
此外Jaenisch等还写道:
"We failed to generate any reprogrammed AP+ colonies from mature spleen B cells or bone marrow derived lgk+ cells in 3 independent experiments [with the original four transcription factors]." (转载自刘实Blog)
Jaenisch的原文看过吗?为什么只选其中的几句话出来?Jacob Hanna,...Rudolf Jaenisch, Direct Reprogramming of Terminally Differentiated Mature B Lymphocytes to Pluripotency. Cell 133, 250–264, April 18, 2008。里面说得非常清楚:Our study provides definite proof for the direct nuclear reprogramming of terminally differentiated adult cells to pluripotency