权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

SP cells and downstream progenitors in human and mouse muscle

人和小鼠肌肉中的 SP 细胞和下游祖细胞

基本信息

批准号：
8443428
负责人：
EMANUELA GUSSONI
金额：
$ 36万
依托单位：
BOSTON CHILDREN'S HOSPITAL
依托单位国家：
美国
项目类别：
财政年份：
2004
资助国家：
美国
起止时间：
2004-09-01 至 2015-04-30
项目状态：
已结题

项目摘要

ABSTRACT Muscle satellite cells are the most studied cells in skeletal muscle. They fulfill many of the requirements of tissue-specific stem cells, including the ability to self-renew and to differentiate into multiple cell types. In addition to satellite cells, other myogenic progenitors have been isolated from both human and mouse skeletal muscle. These 'alternative' myogenic progenitors are distinct from satellite cells and many appear associated to the microvasculature or in the interstitial spaces between myofibers. One of these 'alternative' myogenic cell populations is the so-called 'side population' (SP). Our studies in human muscle have proposed that SP cells secrete factors (such as BMP4) that induce the proliferation of myogenic progenitors expressing receptors for these factors (BMP-receptor 1a, BMPR1a). In the current application, we will elucidate the ties between human muscle SP cells and BMPR1a+ progenitors, study whether forced expression of BMPR1a in muscle SP cells leads to their activation and commitment to the myogenic lineage, investigate if loss of BMPR1a+ expression in skeletal muscle progenitors expressing Myf5 or Pax3 will lead to muscle pathology, and determine in a mouse model whether muscle SP cells or BMPR1a+ progenitors are 'stem'-like cells with intrinsic high-replicative capacity. The Specific Aims of these studies, which involve both human and mouse cells, are: Aim 1: Determine if human muscle SP cells are 'ancestors' of BMPR1a+ myogenic progenitors; Aim 2: Assess if forced expression of BMPR1a in human muscle SP cells is necessary and sufficient to induce their proliferation and specification towards the myogenic lineage; Aim 3: Investigate if BMPR1a+Myf5+ or BMPR1a+Pax3+ progenitors are important for muscle development and participate in muscle regeneration in post-natal life; Aim 4: Use the m-TERT GFP model to identify telomerase-expressing cells in skeletal muscle and determine their relationship to muscle SP, BMPR1a+ cells or other muscle 'stem' cells. These studies will unveil the function of BMPR1a expression in muscle progenitors and unravel the relationship between human muscle SP and BMPR1a-expressing cells. Mouse and human studies will synergize with one another, to define the significance and importance of each myogenic cell population in both species.

摘要

项目成果

期刊论文数量（7）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Isolation and characterization of human fetal myoblasts.

DOI：
10.1007/978-1-61779-343-1_1
发表时间：
2012
期刊：
Methods in molecular biology (Clifton, N.J.)
影响因子：
0
作者：
Lapan, Ariya D;Gussoni, Emanuela
通讯作者：
Gussoni, Emanuela

Isolation and immortalization of patient-derived cell lines from muscle biopsy for disease modeling.

从肌肉活检中分离和永生化患者来源的细胞系，用于疾病建模。

DOI：
10.3791/52307
发表时间：
2015
期刊：
Journal of visualized experiments : JoVE
影响因子：
0
作者：
Robin,JeromeD;Wright,WoodyE;Zou,Yaqun;Cossette,StacyC;Lawlor,MichaelW;Gussoni,Emanuela
通讯作者：
Gussoni,Emanuela

Regulation of myogenic progenitor proliferation in human fetal skeletal muscle by BMP4 and its antagonist Gremlin.

DOI：
10.1083/jcb.200511036
发表时间：
2006-10-09
期刊：
The Journal of cell biology
影响因子：
0
作者：
Frank NY;Kho AT;Schatton T;Murphy GF;Molloy MJ;Zhan Q;Ramoni MF;Frank MH;Kohane IS;Gussoni E
通讯作者：
Gussoni E

Carbamylated erythropoietin does not alleviate signs of dystrophy in mdx mice.

氨甲酰化促红细胞生成素不能减轻 mdx 小鼠的营养不良症状。