Do Media Extracellular Vesicles and Extracellular Vesicles Bound to the Extracellular Matrix Represent Distinct Types of Vesicles?

Do Media Extracellular Vesicles and Extracellular Vesicles Bound to the Extracellular Matrix Represent Distinct Types of Vesicles?
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DOI:
10.3390/biom14010042
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发表时间:
2023-12-28
期刊:
影响因子:
5.5
通讯作者:
--
中科院分区:
生物学2区
文献类型:
--
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有矿化能力的细胞,包括肥大软骨细胞、成熟成骨细胞和成骨分化平滑肌细胞,分泌介质细胞外囊泡(media vesicles)和与细胞外基质结合的细胞外囊泡(matrix vesicles)。培养基囊泡直接从细胞外培养基中纯化。另一方面,在丢弃细胞外介质并对包埋在细胞外基质或骨或软骨组织中的细胞进行酶处理后纯化基质囊泡。多项实验证据表明,从相同类型的矿化细胞中分离出的基质囊泡和介质囊泡具有不同的脂质和蛋白质组成以及功能。这些发现支持这样的观点,即矿化细胞释放的基质囊泡和介质囊泡由于其位置而在矿化组织中具有不同的功能,其固定在细胞外基质上而不是自由漂浮。
Mineralization-competent cells, including hypertrophic chondrocytes, mature osteoblasts, and osteogenic-differentiated smooth muscle cells secrete media extracellular vesicles (media vesicles) and extracellular vesicles bound to the extracellular matrix (matrix vesicles). Media vesicles are purified directly from the extracellular medium. On the other hand, matrix vesicles are purified after discarding the extracellular medium and subjecting the cells embedded in the extracellular matrix or bone or cartilage tissues to an enzymatic treatment. Several pieces of experimental evidence indicated that matrix vesicles and media vesicles isolated from the same types of mineralizing cells have distinct lipid and protein composition as well as functions. These findings support the view that matrix vesicles and media vesicles released by mineralizing cells have different functions in mineralized tissues due to their location, which is anchored to the extracellular matrix versus free-floating.
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