相关实验视频

Updated: May 29, 2025

Phenotypic Analysis and Isolation of Murine Hematopoietic Stem Cells and Lineage-committed Progenitors

Phenotypic Analysis and Isolation of Murine Hematopoietic Stem Cells and Lineage-committed Progenitors

Published on: July 8, 2012

关于如何识别人类造血干细胞的方法学考虑

Taylor Hinchly¹, Dominique Bonnet², Fernando Anjos-Afonso³

¹Haematopoietic Signalling Group, European Cancer Stem Cell Institute, School of Biosciences, Cardiff University, Cardiff, United Kingdom.

Experimental hematology

|February 1, 2025

概括

这项研究改进了分离特定人类造血干细胞 (HSC) 的方法,标记为CD34+CD38-CD45RA-CD90+/-内皮蛋白C受体 (EPCR) + HSCs. 仔细的实验设计和抗体选择对于提高HSC纯度和可重复性至关重要.

科学领域:

血液学血液学血液学
干细胞生物学干细胞生物学
免疫型定型免疫型定型

背景情况:

人类造血干细胞 (HSC) 对于血液形成和移植至关重要.
以前的隔离方法产生混合种群,需要提高研究和临床应用的纯度.
已经确定了一个特定的HSC子集,CD34+CD38-CD45RA-CD90+/-内皮蛋白C受体 (EPCR) +HSCs.

研究的目的:

评估和优化分离高纯度的人类CD34+ HSCs的方法.
探索不同抗体克隆,结合物,细胞源和额外的表面标记物对HSC纯度的影响.
为实验规划和试剂选择提供指导,以尽量减少HSC隔离中的陷.

主要方法:

用于检测细胞表面标记物的各种抗体克隆和结合物的比较分析.
对HSC隔离的不同细胞源的评估.
在隔离面板中包含额外的细胞表面抗原 (整体蛋白-α6,CLEC9A,GPRC5C).
用流细胞计测量评估孤立的HSC种群的纯度.

主要成果:

抗体克隆和结合物的差异显著影响分离的EPCR+ HSCs的纯度.
包括整合素-α6,CLEC9A和GPRC5C标记物的加入可以进一步完善HSC丰富.
确定了特定的试剂陷,影响了可重复性.
优化的协议显示了目标HSC群体的增强纯度.

结论:

方法的精细化,包括精心选择抗体和实验设计,对于纯人CD34+ EPCR+ HSCs的可再生分离至关重要.
了解试剂的局限性和潜在的陷对于成功的HSC缩至关重要.
这项工作为改进标准化和HSC隔离技术的进一步进步提供了基础.

更多相关视频

Isolation Method for Long-Term and Short-Term Hematopoietic Stem Cells

Isolation Method for Long-Term and Short-Term Hematopoietic Stem Cells

Published on: May 19, 2023

Simultaneous Assessment of Kinship, Division Number, and Phenotype via Flow Cytometry for Hematopoietic Stem and Progenitor Cells

Simultaneous Assessment of Kinship, Division Number, and Phenotype via Flow Cytometry for Hematopoietic Stem and Progenitor Cells

Published on: March 24, 2023

相关概念视频

Multipotency of Hematopoietic Stem Cells

Multipotency of Hematopoietic Stem Cells

The hematopoietic stem cells or HSCs are multipotent, meaning they can differentiate and give rise to all blood and immune cells. HSCs are maintained in the quiescent stage until an external stimulus initiates their differentiation. The multipotent HSCs exist as two heterogeneous populations, long-term repopulating cells (LTRC) and short-term repopulating cells (STRC). The two HSC populations have different surface markers or receptors and are classified based on quiescence and long-term...

Regulation of Hematopoietic Stem Cells

Regulation of Hematopoietic Stem Cells

All blood and immune cells are produced from the multipotent hematopoietic stem cells (HSCs) by the process of hematopoiesis. However, they all have a limited life span. In addition, many are depleted in immune surveillance or combatting an injury or infection. This makes blood one of the most regenerative tissues. Hematopoiesis helps replenish these blood and immune cells, restoring the body's normal functioning. However, overproduction of blood and immune cells can make them cancerous or...

Hematopoiesis

Hematopoiesis

The process of blood cell formation is called hematopoiesis. Hematopoiesis starts early during development, on the seventh day of embryogenesis. This phase of hematopoiesis is called the primitive wave, wherein the extraembryonic yolk sac allows the production of erythroid cells and endothelial cells from a common precursor called hemangioblast. The erythroid cells provide oxygen to support the growth of the rapidly dividing embryo. Hemangioblasts later develop into hematopoietic stem cells or...