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Mussel‐Inspired Modification of Nanofibers for REST siRNA Delivery: Understanding the Effects of Gene‐Silencing and Substrate Topography on Human Mesenchymal Stem Cell Neuronal Commitment
Author(s) -
Low Wei Ching,
Rujitanaroj PimOn,
Lee DongKeun,
Kuang Jinghao,
Messersmith Phillip B.,
Chan Jerry Kok Yen,
Chew Sing Yian
Publication year - 2015
Publication title -
macromolecular bioscience
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.924
H-Index - 105
eISSN - 1616-5195
pISSN - 1616-5187
DOI - 10.1002/mabi.201500101
Subject(s) - mesenchymal stem cell , gene silencing , nanofiber , substrate (aquarium) , microbiology and biotechnology , gene delivery , cell , chemistry , biophysics , nanotechnology , biology , genetic enhancement , gene , materials science , biochemistry , ecology
In this study, we promote neuronal differentiation of human mesenchymal stem cells (MSCs) through scaffold‐mediated sustained release of siRNA targeting RE‐1 silencing transcription factor (REST). Poly (ϵ‐caprolactone) nanofibers were surface modified with mussel inspired DOPA‐melanin (DM) coating for adsorption of REST siRNA. DM modification increased siRNA‐loading efficiency and reduced the initial burst release. Fiber alignment and DM modification enhanced REST knockdown efficiencies. Under non‐specific differentiation condition, REST silencing and fiber topography enhanced MSC neuronal markers expressions and reduced glial cell commitment. Such scaffolds may find useful applications in enhancing MSCs neuronal differentiation under non‐specific conditions such as an in vivo environment.