生物谷報(bào)道:科學(xué)家們一直對(duì)人類的胚胎干細(xì)胞十分感興趣,,但由于人類一旦出生,這個(gè)人的就不可能再存在胚胎干細(xì)胞了,。因此科學(xué)家們一直努力尋找新的手段獲得個(gè)性化的胚胎干細(xì)胞,。如果成功,這將是生命科學(xué)研究史上的得大突破,。
兩年前,,中國(guó)科學(xué)家盛惠珍研究員成功地用兔體細(xì)胞與人的細(xì)胞核融合,構(gòu)建了人類胚胎干細(xì)胞系,,在全球引起了極大的爭(zhēng)論,。許多人認(rèn)為這違反了倫理道德,是不同物種間的細(xì)胞進(jìn)行雜交,。具體報(bào)道見(jiàn):科學(xué)家首次通過(guò)克隆獲得胚胎干細(xì)胞,,當(dāng)時(shí)Nature等還專門介紹中國(guó)的干細(xì)胞研究,如Nature介紹中國(guó)的干細(xì)胞研究:北醫(yī)李凌松,湘雅盧光... ,,但是接下來(lái)的工作,,中國(guó)在人類胚胎干細(xì)胞的研究中明顯滯后,迄今為止沒(méi)有十分重大的發(fā)現(xiàn),。此次是美國(guó)哈佛大學(xué)科學(xué)家采用人類胚胎干細(xì)胞系與不同的人的成纖維細(xì)胞進(jìn)行融合,,得到不同表型特征的個(gè)性化的人類胚胎干細(xì)胞,這種通過(guò)體外核重組技術(shù)得到胚胎干細(xì)胞,,具有與原重組的細(xì)胞有相似的表型,。這為人類胚胎干細(xì)胞移植治療和應(yīng)用成功打開(kāi)一個(gè)缺口,具有深刻的意義,。
原文:
Chad A. Cowan, Jocelyn Atienza, Douglas A. Melton,
Kevin Eggan,Nuclear Reprogramming of Somatic Cells After Fusion with Human Embryonic Stem Cells
Science, Vol 309, Issue 5739, 1369-1373 , 26 August 2005
相關(guān)研究:
Gurdon JB, Byrne JA, Simonsson S. Nuclear reprogramming by xenopus oocytes.
Novartis Found Symp. 2005;265:129-36; discussion 136-41, 204-11
Jaenisch R, Hochedlinger K, Eggan K. Nuclear cloning, epigenetic reprogramming and cellular differentiation.
Novartis Found Symp. 2005;265:107-18; discussion 118-28.
Behboodi E, Ayres SL, Memili E, O'Coin M, Chen LH, Reggio BC, Landry AM, Gavin WG, Meade HM, Godke RA, Echelard Y.
Health and reproductive profiles of malaria antigen-producing transgenic goats derived by somatic cell nuclear transfer.
Cloning Stem Cells. 2005;7(2):107-18.
Boiani M, Gentile L, Gambles VV, Cavaleri FM, Redi CA, Scholer HR. Variable 'reprogramming' of the pluripotent
stem cell marker Oct4 in mouse clones: distinct developmental potentials in different culture environments.
Stem Cells. 2005 Jun 14;
Saito S, Liu B, Yokoyama K. Animal embryonic stem (ES) cells: self-renewal, pluripotency, transgenesis and nuclear transfer.
Hum Cell. 2004 Sep;17(3):107-15
Morgan HD, Santos F, Green K, Dean W, Reik W. Epigenetic reprogramming in mammals.
Hum Mol Genet. 2005 Apr 15;14 Spec No 1:R47-58
Simonsson S, Gurdon JB. Changing cell fate by nuclear reprogramming.
Cell Cycle. 2005 Apr;4(4):513-5. Epub 2005 May 1.