巨细胞,淋巴细胞和介酶干细胞在骨再生过程中的相互作用
Masatoshi Murayama1, Simon K Chow1, Max L Lee1
1Department of Orthopaedic Surgery, Stanford University School of Medicine, Stanford, California, USA.
Bone & joint research
|September 5, 2024
概括
了解骨髓吸附缩物 (BMAC) 中免疫细胞与介质干细胞 (MSC) 的相互作用,可以改善骨再生策略. 优化这些细胞通信可能会促进骨折和骨缺陷的愈合.
科学领域:
- 生物医学工程 生物医学工程
- 免疫学 免疫学 免疫学
- 再生医学是一种再生医学.
背景情况:
- 骨再生对于运动至关重要,但诸如衰老和炎症等因素会导致愈合延迟和非结合.
- 目前的骨愈合策略使用骨髓吸附缩物 (BMAC) 或带有支架的介质干细胞 (MSC).
- 由于MSC和免疫细胞组成不一致,BMAC的疗效有所不同.
研究的目的:
- 在BMAC中探索免疫细胞 (巨细胞,淋巴细胞) 和MSC之间的相互作用机制.
- 确定这些细胞相互作用如何影响骨再生.
- 通过操纵细胞交叉通话来提倡增强骨愈合的新策略.
主要方法:
- 在BMAC内分析巨分极 (M1/M2) 和T细胞子集 (Th1,Th17,Th2,Treg).
- 研究细胞因子和分泌因子在细胞间通信中的作用.
- 检查免疫细胞-MSC交叉对骨微环境和骨质生成的影响.
主要成果:
- 巨细胞和T细胞显著影响MSC功能和骨再生.
- 特定的免疫细胞表型 (例如M2巨细胞,Th2/Treg T细胞) 促进骨质生成.
- 亲炎性免疫细胞 (M1巨细胞,Th1/Th17 T细胞) 可以阻碍骨的愈合.
结论:
- 调节BMAC内的免疫细胞组成和相互作用提供了一种有希望的方法来增强骨修复.
- 针对MSC和免疫细胞之间的交叉,可以改善非结合骨折和骨缺陷的结果.
- 对免疫细胞-MSC动态的进一步研究可以导致骨的先进再生疗法.
更多相关视频
05:40Author Spotlight: Studying Macrophage-Epithelial Cell Interactions in Salivary Gland Regeneration After Injury
Published on: November 17, 2023
1.5K
08:52Neuron-Macrophage Co-cultures to Activate Macrophages Secreting Molecular Factors with Neurite Outgrowth Activity
Published on: March 30, 2018
8.7K
相关概念视频
01:19Mesenchymal Stem Cells
4.6K
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...
4.6K
01:40Bone Remodeling
38.2K
Bone remodeling is a continuous and balanced process of bone resorption by osteoclasts and bone formation by osteoblasts. In adults, it helps maintain bone mass and calcium homeostasis. While mechanical stress can stimulate turnover as part of the normal maintenance and reparative process, several hormones also regulate bone remodeling.
38.2K
01:26Stem Cell Niche
5.0K
The stem cell niche is the dynamic microenvironment where stem cells reside. Inside these niches, the cells may remain undifferentiated, undergo high self-renewal, or become lineage-specific progenitors. Stem cells coexist with other niche cells, such as stromal cells. They also interact closely with the ECM. Cell-cell and cell-matrix communication occur via adhesion molecules or soluble factors that signal the stem cells and determine their fate. Stromal cells also provide survival signals to...
5.0K
01:31Osteoclasts in Bone Remodeling
2.8K
Osteoclasts are cells responsible for bone resorption and remodeling. They originate from hematopoietic progenitor cells present in the bone marrow. Numerous progenitor cells fuse to form multinucleated cells, each with 10-20 nuclei. A single osteoclast has a diameter of 150 to 200 µM. These cells have ruffled borders that break down the underlying bone tissue and release minerals such as calcium into the blood in bone resorption. Osteoclasts cling to bones with their ruffled edges during...
2.8K