Hydrostatic pressure promotes chondrogenic differentiation and microvesicle release from human embryonic and bone marrow stem cells

Lu Luo, Nicola C. Foster, Kenny L. Man, Mathieu Brunet, David A. Hoey, Sophie C. Cox, Susan J. Kimber, Alicia J. El Haj

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Abstract

Mechanical stimulation plays in an important role in regulating stem cell differentiation and their release of extracellular vesicles (EVs). In this study, effects of low magnitude hydrostatic pressure (HP) on the chondrogenic differentiation and microvesicle release from human embryonic stem cells (hESCs) and human bone marrow stem cells (hBMSCs) are examined. hESCs were differentiated into chondroprogenitors and then embedded in fibrin gels and subjected to HP (270 kPa, 1 Hz, 5 days per week). hBMSC pellets were differentiated in chondrogenic media and subjected to the same regime. HP significantly enhanced ACAN expression in hESCs. It also led to a significant increase in DNA content, sGAG content and total sGAG/DNA level in hBMSCs. Furthermore, HP significantly increased microvesicle protein content released from both cell types. These results highlight the benefit of HP bioreactor in promoting chondrogenesis and EV production for cartilage tissue engineering.
Original languageEnglish
Article number2100401
Number of pages11
JournalBiotechnology Journal
Early online date18 Dec 2021
DOIs
Publication statusE-pub ahead of print - 18 Dec 2021

Keywords

  • bone marrow stem cells
  • embryonic stem cells
  • extracellular vesicle
  • hyrdostatic pressure
  • mechanical stimulation

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