Effect of intermittent hydrostatic pressure on early
cartilage differentiation of ATDC5 cells

doi:10.3969/j.issn.2095-4344.2043

Abstract

Abstract:

BACKGROUND: Cartilage tissue repair is an important field of tissue engineering. How to use engineering technology to effectively differentiate seed cells into chondrocytes is a focus and difficulty in the field of tissue engineering. At present, it is difficult to make seed cells differentiate into mature and stable chondrocytes by simple orientation-inducing culture. Thereafter, the authors preliminarily studied the induced directional differentiation using intermittent hydrostatic pressure stimulation based on the characteristics of ATDC5 chondrocytes, in addition to the use of effective culture solution.

OBJECTIVE: To investigate the effects of intermittent hydrostatic pressure on the early-term chondrocyte differentiation of ATDC5 cells.

METHODS: ATDC5 cell lines were cultured in multilayer. Cells adhered well with multiple-layer formation after 3 days, and were then sealed to maintain sterility. Intermittent hydrostatic pressure was applied to the cultures (10 MPa, 1 Hz, 4 h/d). Cells cultured with no intermittent hydrostatic pressure served as control group. Morphological changes of the cells were observed under microscope at 4, 7, 11, 14, and 17 days. Expression levels of Aggrecan, COL-2 and SOX-9 mRNA were detected by real-time PCR.

RESULTS AND CONCLUSION: After application of intermittent hydrostatic pressure, ATDC5 cells aggregated and appeared with obvious patchy changes. The mRNA expression levels of Aggrecan and COL-2 were significantly increased. SOX-9 mRNA expression level showed no significant difference compared with the control group, but presented with fall-rise pattern. Intermittent hydrostatic pressure influences the mRNA expression related to chondrocyte differentiation and promotes the secretion of chondrogenic matrix. This method is contributive to the mature cartilage differentiation.

Key words: intermittent hydrostatic pressure, ATDC5 cells, chondrocytes, cell differentiation, mechanical stimulation, cell culture

CLC Number:

Chen Hongyu, Han Hao, Chen Wei, Zhang Qiang . Effect of intermittent hydrostatic pressure on early cartilage differentiation of ATDC5 cells [J]. Chinese Journal of Tissue Engineering Research, 2020, 24(14): 2153-2157.

Figures/Tables 2

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