High levels of Id1 expression define B1 type adult neural stem cells.

High levels of Id1 expression define B1 type adult neural stem cells.
复制标题

DOI:
10.1016/j.stem.2009.08.017
复制
发表时间:
2009-11-06
期刊:
影响因子:
23.9
通讯作者:
Benezra R
Benezra R
中科院分区:
医学1区
文献类型:
--
作者:
Nam HS;Benezra R

文献摘要

参考文献

被引文献

相似文献

确定干细胞的分子特性可能是制定干细胞功能障碍治疗干预的合理策略的关键。我们发现Id1(显性负螺旋-环-螺旋转录调节因子)的高表达,在成人大脑的脑室下星形胶质细胞中鉴定出一种罕见的GFAP+星形胶质细胞,具有干细胞属性。具有B1型星形胶质细胞形态特征的罕见、长寿、相对静止的Id1high星形胶质细胞自我更新并产生迁移性神经母细胞,分化为嗅球中间神经元。培养的Id1高水平的神经干细胞可以不对称地自我更新,并产生表达逐渐降低的Id1水平的干细胞和分化细胞,揭示了未受干扰的脑室下神经源性谱系细胞的Id1梯度。此外,Id基因对于赋予自我更新能力是必要的,这是干细胞身份的一个特征。我们认为,单一转录调节因子Id1的高表达,在分子上定义了人们长期追求的B1型成体神经干细胞。
Defining the molecular identity of stem cells may be critical for formulating a rational strategy for the therapeutic intervention of stem cell dysfunction. We find that high expression of Id1, a dominant-negative helix-loop-helix transcriptional regulator, identifies a rare population GFAP+ astrocytes with stem cell attributes among the subventricular astrocytes in the adult brain. The rare, long-lived, and relatively quiescent Id1high astrocytes with morphology characteristic of B1 type astrocytes self-renew and generate migratory neuroblasts that differentiate into olfactory bulb interneurons. Cultured Id1high neural stem cells can self-renew asymmetrically and generate a stem and a differentiated cell expressing progressively lower levels of Id1, revealing an Id1 gradient in unperturbed cells of subventricular neurogenic lineages. Moreover, Id genes are necessary to confer self-renewal capacity, a characteristic of stem cell identity. We suggest that high expression of a single transcriptional regulator, Id1, molecularly defines the long-sought-after B1 type adult neural stem cells.
DOI: 10.1016/j.cell.2006.10.041
发表时间: 2006-12-15
期刊: CELL
影响因子: 64.5
作者:
Kuo, Chay T.;Mirzadeh, Zaman;Jan, Yuh-Nung
通讯作者: Jan, Yuh-Nung
DOI: 10.1038/3305
发表时间: 1998-11-01
期刊: NATURE MEDICINE
影响因子: 82.9
作者:
Eriksson, PS;Perfilieva, E;Gage, FH
通讯作者: Gage, FH
DOI: 10.1073/pnas.250471697
发表时间: 2000-12-05
影响因子: 11.1
作者:
Laywell, ED;Rakic, P;Steindler, DA
通讯作者: Steindler, DA
DOI: 10.1073/pnas.0710000105
发表时间: 2008-01-22
影响因子: 11.1
作者:
Coskun, Volkan;Wu, Hao;Sun, Yi E.
通讯作者: Sun, Yi E.
DOI: 10.1016/j.cell.2005.05.026
发表时间: 2005-07-01
期刊: CELL
影响因子: 64.5
作者:
Kiel, MJ;Yilmaz, ÖH;Morrison, SJ
通讯作者: Morrison, SJ