Enhanced Calvarial Bone Repair Using ASCs Engineered with RNA-Guided Split dCas12a System that Co-Activates Sox 5, Sox6, and Long Non-Coding RNA H19.

Autor: Nguyen NTK; Department of Chemical Engineering, National Tsing Hua University, Hsinchu, 300044, Taiwan., Lee SS; Department of Chemical Engineering, National Tsing Hua University, Hsinchu, 300044, Taiwan., Chen PH; Department of Chemical Engineering, National Tsing Hua University, Hsinchu, 300044, Taiwan., Chang YH; Department of Chemical Engineering, National Tsing Hua University, Hsinchu, 300044, Taiwan., Pham NN; Department of Chemical Engineering, National Tsing Hua University, Hsinchu, 300044, Taiwan., Chang CW; Department of Chemical Engineering, National Tsing Hua University, Hsinchu, 300044, Taiwan., Pham DH; Department of Chemical Engineering, National Tsing Hua University, Hsinchu, 300044, Taiwan., Ngo DKT; Department of Chemical Engineering, National Tsing Hua University, Hsinchu, 300044, Taiwan., Dang QT; Department of Chemical Engineering, National Tsing Hua University, Hsinchu, 300044, Taiwan., Truong VA; Department of Chemical Engineering, National Tsing Hua University, Hsinchu, 300044, Taiwan., Truong VA; Department of Chemical Engineering, National Tsing Hua University, Hsinchu, 300044, Taiwan., Chang YH; Department of Orthopaedic Surgery, Bone and Joint Research Center, Chang Gung Memorial Hospital, Linkou, 33305, Taiwan., Hu YC; Department of Chemical Engineering, National Tsing Hua University, Hsinchu, 300044, Taiwan.; Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu, 300044, Taiwan.
Jazyk: angličtina
Zdroj: Small (Weinheim an der Bergstrasse, Germany) [Small] 2024 May; Vol. 20 (21), pp. e2306612. Date of Electronic Publication: 2023 Dec 21.
DOI: 10.1002/smll.202306612
Abstrakt: Healing of large calvarial bone defects remains challenging. An RNA-guided Split dCas12a system is previously harnessed to activate long non-coding RNA H19 (lncRNA H19, referred to as H19 thereafter) in bone marrow-derived mesenchymal stem cells (BMSCs). H19 activation in BMSCs induces chondrogenic differentiation, switches bone healing pathways, and improves calvarial bone repair. Since adipose-derived stem cells (ASCs) can be harvested more easily in large quantity, here it is aimed to use ASCs as an alternative cell source. However, H19 activation alone using the Split dCas12a system in ASCs failed to elicit evident chondrogenesis. Therefore, split dCas12a activators are designed more to co-activate other chondroinductive transcription factors (Sox5, Sox6, and Sox9) to synergistically potentiate differentiation. It is found that co-activation of H19/Sox5/Sox6 in ASCs elicited more potent chondrogenic differentiation than activation of Sox5/Sox6/Sox9 or H19 alone. Co-activating H19/Sox5/Sox6 in ASCs significantly augmented in vitro cartilage formation and in vivo calvarial bone healing. These data altogether implicated the potentials of the Split dCas12a system to trigger multiplexed gene activation in ASCs for differentiation pathway reprogramming and tissue regeneration.
(© 2023 Wiley‐VCH GmbH.)
Databáze: MEDLINE
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