概括
人体单细胞释放出一种强大的单细胞衍生生长因子 (MDGF),刺激间酶体细胞的增殖. 这种生长因子在组织修复和动脉样硬化的发展中起着关键作用.
科学领域:
- 细胞生物学 细胞生物学
- 免疫学 免疫学 免疫学
- 生物化学 生物化学
背景情况:
- 培养的腹巨细胞分泌一个对介质细胞的原体.
- 腹巨细胞起源于外周血液单细胞,这些细胞是参与组织修复的关键炎症细胞.
- 培养的人类单细胞,当被激活时,释放出强大的生长因子.
研究的目的:
- 研究单细胞衍生生长因子 (MDGF) 单细胞释放的激活条件.
- 描述MDGF的特性及其对细胞的影响.
- 讨论MDGF在伤口修复和动脉形成中的潜在作用.
主要方法:
- 培养人类单细胞5天.
- 用内毒素 (10微克/毫升) 或康卡纳瓦林A (6微克/毫升) 激活单细胞20小时.
- 收集MDGF分泌到无血清介质中的0.15%牛血清白蛋白.
主要成果:
- 在特定的内毒素或康卡纳瓦林A度和潜伏时间下,MDGF的最佳释放发生.
- MDGF刺激了人类光滑肌细胞,纤维细胞和3T3细胞的DNA合成和细胞数量的增加.
- MDGF对素敏感,耐热,不能进行透析.
结论:
- 人体单细胞在激活后分泌出一种强大的MDGF.
- MDGF表现出一种蛋白质生长因子的特征.
- 在伤口愈合和动脉样硬化的发病过程中,MDGF可能很重要.
相关概念视频
Differentiation of Common Myeloid Progenitor Cells
Common myeloid progenitors (CMPs) are oligopotent cells that can differentiate into granulocytes and macrophages. Granulocytes and macrophages are essential for protecting the body against bacterial, viral, or fungal infections. They migrate from the bone marrow into the circulating blood to reach specific tissue sites where they differentiate and help in immune surveillance. However, they survive only for a few days and must be continuously made available to the organism to maintain a robust...
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...
Mesenchymal Stem Cells
Mesenchymal stem cells (MSCs) are adult stem cells that can differentiate into most connective tissue cell types, except for hematopoietic cells, depending upon the source of MSCs. For example, bone-marrow-derived MSCs (BM-MSCs) can differentiate into osteocytes, hepatocytes, and pancreatic and neuronal cells. MSCs can be isolated from various sources such as bone marrow, placenta, adipose tissue, teeth, and Wharton’s jelly, a gelatinous substance in the umbilical cord. The ease of their access...


