相关实验视频

Updated: Jul 27, 2025

Derivation and Characterization of a Transgene-free Human Induced Pluripotent Stem Cell Line and Conversion into Defined Clinical-grade Conditions

Derivation and Characterization of a Transgene-free Human Induced Pluripotent Stem Cell Line and Conversion into Defined Clinical-grade Conditions

Published on: November 26, 2014

通过hTERT基因转移永生化的人类骨干细胞的建立和特征化

Qianyu Cheng^1,2,3,4, Chang Liu^1,2,3,4, Qiuman Chen⁵

¹Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China.

Frontiers in cell and developmental biology

|June 7, 2023

概括

研究人员将从上乳头 (SCAPs) 的干细胞永生化,以创建再生医学的稳定细胞源. 这些不朽的SCAPs显示了增强的骨质分化,证明了对骨组织工程和临床治疗的前景.

科学领域:

生物医学工程生物医学工程
干细胞生物学干细胞生物学
再生医学是一种再生医学.

背景情况:

顶点乳头的干细胞 (SCAPs) 对再生内牙有价值,但难以采集和维护.
初级SCAP在传递时失去表型,限制了它们的临床应用.
开发一种稳定,长期增殖的干细胞来源对于组织工程至关重要.

研究的目的:

使用人类端粒酶逆转录酶 (hTERT) 永久化人类SCAP,以克服初级细胞的局限性.
评估永生SCAPs (hiSCAPs) 作为骨组织工程的种子细胞的潜力.
研究BMP9增强hiSCAPs骨质分化的机制.

主要方法:

人类SCAPs使用过度表达hTERT的lentiviral载体进行了不朽化.
hiSCAPs的特征是扩散,瘤性,干细胞标记物和分化潜力.
在体外和体内研究评估了AdBMP9感染后的hiSCAP骨质分化.
分析了涉及BMP9,ALK1,BMPRII和Smad1的分子机制.

主要成果:

hiSCAPs表现出长期的增殖,没有瘤性,并保持了介质细胞和原始体标志物.
与初级SCAP相比,hiSCAPs表现出增强的骨质分化.
在体外和体内,AdBMP9显著促进了hiSCAPs的骨质分化.
发现BMP9可以对ALK1和BMPRII进行上调,从而激活骨质生成的Smad1通路.

结论:

hiSCAPs为骨组织工程提供了稳定有效的干细胞来源.
BMP9通过ALK1/BMPRII/Smad1通路显著促进hiSCAPs的骨质分化.
这些发现支持hiSCAPs在骨缺陷和内牙再生的再生疗法中的临床应用.

关键词:

BMP9 BMP9 BMP9 BMP9 BMP9 BMP9 BMP9 BMP9 BMP9 BMP9 BMP9 BMP9 BMP9 赫特特是个很好的球员.永生化就是永生化.骨质性分化的骨质性差异化来自上角乳头 (SCAP) 的干细胞.

更多相关视频

Generation of Integration-free Human Induced Pluripotent Stem Cells Using Hair-derived Keratinocytes

Generation of Integration-free Human Induced Pluripotent Stem Cells Using Hair-derived Keratinocytes

Published on: August 20, 2015

Isolation and Culture of Adult Epithelial Stem Cells from Human Skin

Isolation and Culture of Adult Epithelial Stem Cells from Human Skin

Published on: March 31, 2011

相关概念视频

Induced Pluripotent Stem Cells

Induced Pluripotent Stem Cells

Stem cells are undifferentiated cells that divide and produce different cell types. Ordinarily, cells that have differentiated into a specific cell type are terminally differentiated; however, scientists have found a way to reprogram these mature cells so that they dedifferentiate and return to an unspecialized, proliferative state. These cells are pluripotent like embryonic stem cells—able to produce all cell types—and are called induced pluripotent stem cells (iPSCs).
Somatic...

Stem Cell Culture

Stem Cell Culture

Stem cell research aims to find ways to use stem cells to regenerate and repair cellular damage. Over time, most adult cells undergo the wear and tear of aging and lose their ability to divide and repair themselves. Stem cells do not display a particular morphology or function. Adult stem cells, which exist as a small subset of cells in most tissues, keep dividing and can differentiate into a number of specialized cells generally formed by that tissue. These cells enable the body to renew and...