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- W4200609107 abstract "This study established a method for isolating large numbers of high-purity osteocytes from high-density bone. Bone fragments derived from mice tibia and femurs were alternately digested with type I collagenase and EDTA nine times, and the digested cells and bone chips (BC) were cultured, digested, and passaged when cells were fully grown. The types of cells obtained were identified by morphology, viable cell counts, alkaline phosphatase staining, and biochemical activity analyses, and specific osteocyte and osteoblast markers were evaluated by quantitative real-time polymerase chain reaction. Our results showed that among the cells obtained from the third digestion (fractions 7–9) of wild mice tibias and femurs and the remaining BCs, 85%–90% of the cells were osteocytes. Moreover, their morphology was approximately one-tenth to one-fifth the size of osteoblasts, star-shaped or polygonal, with a dendritic structure, negative for alkaline phosphatase staining, and showed a high expression of dmp1 and sclerostin. Ninety percent of the cells in fractions 1–3 were osteoblasts, and were fusiform or polygonal shape. The activity of osteoblast-specific alkaline phosphatase and mRNA expression were high in this fraction, while the expression of osteocyte-specific dmp1 and sclerostin was not detected. In the second portion (fractions 4–6), a large number were osteoblasts, mixed with a small number of osteocytes, and had high alkaline phosphatase activity and osteocyte mRNA levels, a specific level of the osteocyte marker dmp1, and no sclerostin was detected. Osteocytes in daβcatot mice were also successfully isolated by this method, and we found that Wnt signaling increased the proliferation of these osteocytes. The proposed method can be used to culture osteocytes and osteoblasts of high purity and can be used for isolation and culture of these two kinds of cells from high-density bone, which provides an avenue for the study of osteocyte function in vitro." @default.
- W4200609107 created "2021-12-31" @default.
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- W4200609107 date "2022-01-01" @default.
- W4200609107 modified "2023-10-18" @default.
- W4200609107 title "Modified enzymatic collagen digestion-mediated isolation of osteocytes" @default.
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- W4200609107 doi "https://doi.org/10.32604/biocell.2022.017505" @default.
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