Stem Cell Microenvironments and Beyond

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environmental signals, creating a memory within the bioengineered tissue (Siuti
et al. 2013 ). This memory may then be used for the delivery of exogenous signals
and apply them in sequence rather than simultaneously, which may help to over-
come several limitations occurring with stem cells, such as limited survival and
engraftment upon transplantation.


13.3 Conclusions and Future Perspectives


Engineering of three-dimensional niche with defined features demonstrated to
improve survival and architectural structure of stem cells, leading to a more physi-
ological microenvironment and behavior. Due to the remaining hurdles in recapitu-
lating in one in vitro model all the biological, morphological and physiological
features typical of the in vivo stem cell niche features (Hunsberger et  al. 2015 ),
future studies aiming at integrating all the different physicochemical and genetic
cues typical of the 3D niche described in this chapter should be considered before
engineering stem cell-based therapeutics for humans. Furthermore, engineering of
in vitro systems including bioprinted organs-on-a-chip for drug discovery and toxic-
ity testing using stem cells may benefit from the integration of the abovementioned
features. This information will become undoubtedly even more relevant with the
upcoming interest in “precision medicine” and bio-banking of patient-specific 3D
mini-organs (Bredenoord et al. 2017 ).


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13 Current Technologies Based on the Knowledge of the Stem...

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