Macro and Microfluidic Flows for Skeletal Regenerative Medicine

Fluid flow has a great potential as a cell stimulatory tool for skeletal regenerative medicine, because fluid flow-induced bone cell mechanotransduction in vivo plays a critical role in maintaining healthy bone homeostasis. Applications of fluid flow for skeletal regenerative medicine are reviewed a...

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Main Authors: Brandon D. Riehl, Jung Yul Lim
Format: Article
Language:English
Published: MDPI AG 2012-12-01
Series:Cells
Subjects:
Online Access:http://www.mdpi.com/2073-4409/1/4/1225
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author Brandon D. Riehl
Jung Yul Lim
author_facet Brandon D. Riehl
Jung Yul Lim
author_sort Brandon D. Riehl
collection DOAJ
description Fluid flow has a great potential as a cell stimulatory tool for skeletal regenerative medicine, because fluid flow-induced bone cell mechanotransduction in vivo plays a critical role in maintaining healthy bone homeostasis. Applications of fluid flow for skeletal regenerative medicine are reviewed at macro and microscale. Macroflow in two dimensions (2D), in which flow velocity varies along the normal direction to the flow, has explored molecular mechanisms of bone forming cell mechanotransduction responsible for flow-regulated differentiation, mineralized matrix deposition, and stem cell osteogenesis. Though 2D flow set-ups are useful for mechanistic studies due to easiness in in situ and post-flow assays, engineering skeletal tissue constructs should involve three dimensional (3D) flows, e.g., flow through porous scaffolds. Skeletal tissue engineering using 3D flows has produced promising outcomes, but 3D flow conditions (e.g., shear stress vs. chemotransport) and scaffold characteristics should further be tailored. Ideally, data gained from 2D flows may be utilized to engineer improved 3D bone tissue constructs. Recent microfluidics approaches suggest a strong potential to mimic in vivo microscale interstitial flows in bone. Though there have been few microfluidics studies on bone cells, it was demonstrated that microfluidic platform can be used to conduct high throughput screening of bone cell mechanotransduction behavior under biomimicking flow conditions.
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spelling doaj.art-85dac6624acc4f4e9e9c8f4ade5b4eda2023-09-02T15:13:30ZengMDPI AGCells2073-44092012-12-01141225124510.3390/cells1041225Macro and Microfluidic Flows for Skeletal Regenerative MedicineBrandon D. RiehlJung Yul LimFluid flow has a great potential as a cell stimulatory tool for skeletal regenerative medicine, because fluid flow-induced bone cell mechanotransduction in vivo plays a critical role in maintaining healthy bone homeostasis. Applications of fluid flow for skeletal regenerative medicine are reviewed at macro and microscale. Macroflow in two dimensions (2D), in which flow velocity varies along the normal direction to the flow, has explored molecular mechanisms of bone forming cell mechanotransduction responsible for flow-regulated differentiation, mineralized matrix deposition, and stem cell osteogenesis. Though 2D flow set-ups are useful for mechanistic studies due to easiness in in situ and post-flow assays, engineering skeletal tissue constructs should involve three dimensional (3D) flows, e.g., flow through porous scaffolds. Skeletal tissue engineering using 3D flows has produced promising outcomes, but 3D flow conditions (e.g., shear stress vs. chemotransport) and scaffold characteristics should further be tailored. Ideally, data gained from 2D flows may be utilized to engineer improved 3D bone tissue constructs. Recent microfluidics approaches suggest a strong potential to mimic in vivo microscale interstitial flows in bone. Though there have been few microfluidics studies on bone cells, it was demonstrated that microfluidic platform can be used to conduct high throughput screening of bone cell mechanotransduction behavior under biomimicking flow conditions.http://www.mdpi.com/2073-4409/1/4/1225fluid flowmacroflow2D and 3Dmicrofluidicsbonemechanotransductionregenerative medicine
spellingShingle Brandon D. Riehl
Jung Yul Lim
Macro and Microfluidic Flows for Skeletal Regenerative Medicine
Cells
fluid flow
macroflow
2D and 3D
microfluidics
bone
mechanotransduction
regenerative medicine
title Macro and Microfluidic Flows for Skeletal Regenerative Medicine
title_full Macro and Microfluidic Flows for Skeletal Regenerative Medicine
title_fullStr Macro and Microfluidic Flows for Skeletal Regenerative Medicine
title_full_unstemmed Macro and Microfluidic Flows for Skeletal Regenerative Medicine
title_short Macro and Microfluidic Flows for Skeletal Regenerative Medicine
title_sort macro and microfluidic flows for skeletal regenerative medicine
topic fluid flow
macroflow
2D and 3D
microfluidics
bone
mechanotransduction
regenerative medicine
url http://www.mdpi.com/2073-4409/1/4/1225
work_keys_str_mv AT brandondriehl macroandmicrofluidicflowsforskeletalregenerativemedicine
AT jungyullim macroandmicrofluidicflowsforskeletalregenerativemedicine