PMID- 32007417 OWN - NLM STAT- MEDLINE DCOM- 20200722 LR - 20200722 IS - 1477-2566 (Electronic) IS - 1465-3249 (Linking) VI - 22 IP - 2 DP - 2020 Feb TI - Effective naked plasmid DNA delivery into stem cells by microextrusion-based transient-transfection system for in situ cardiac repair. PG - 70-81 LID - S1465-3249(19)30917-X [pii] LID - 10.1016/j.jcyt.2019.12.003 [doi] AB - BACKGROUND AIMS: Combining the use of transfection reagents and physical methods can markedly improve the efficiency of gene delivery; however, such methods often cause cell damage. Additionally, naked plasmids without any vector or physical stimulation are difficult to deliver into stem cells. In this study, we demonstrate a simple and rapid method to simultaneously facilitate efficient in situ naked gene delivery and form a bioactive hydrogel scaffold. METHODS: Transfecting naked GATA binding protein 4 (GATA4) plasmids into human umbilical cord-derived mesenchymal stem cells (hUC-MSCs) by co-extruding naked plasmids and hUC-MSCs with a biomimetic and negatively charged water-based biodegradable thermo-responsive polyurethane (PU) hydrogel through a microextrusion-based transient-transfection system can upregulate the other cardiac marker genes. RESULTS: The PU hydrogels with optimized physicochemical properties (such as hard-soft segment composition, size, hardness and thermal gelation) induced GATA4-transfected hUC-MSCs to express the cardiac marker proteins and then differentiated into cardiomyocyte-like cells in 15 days. We further demonstrated that GATA4-transfected hUC-MSCs in PU hydrogel were capable of in situ revival of heart function in zebrafish in 30 days. CONCLUSIONS: Our results suggest that hUC-MSCs and naked plasmids encapsulated in PU hydrogels might represent a new strategy for in situ tissue therapy using the microextrusion-based transient-transfection system described here. This transfection system is simple, effective and safer than conventional technologies. CI - Copyright (c) 2019 International Society for Cell and Gene Therapy. Published by Elsevier Inc. All rights reserved. FAU - Huang, Nien-Chi AU - Huang NC AD - Institute of Polymer Science and Engineering, National Taiwan University, Taipei, Taiwan, R.O.C. FAU - Lee, Chii-Ming AU - Lee CM AD - Division of Cardiology, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan, R.O.C. FAU - Hsu, Shan-Hui AU - Hsu SH AD - Institute of Polymer Science and Engineering, National Taiwan University, Taipei, Taiwan, R.O.C.; Center of Tissue Engineering and 3D Printing, National Taiwan University, Taipei, Taiwan, R.O.C.; Institute of Cellular and System Medicine, National Health Research Institutes, Zhunan, Taiwan, R.O.C.. Electronic address: shhsu@ntu.edu.tw. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20200130 PL - England TA - Cytotherapy JT - Cytotherapy JID - 100895309 RN - 0 (GATA4 Transcription Factor) RN - 0 (GATA4 protein, human) RN - 0 (Hydrogels) RN - 0 (Polyurethanes) RN - 9007-49-2 (DNA) SB - IM MH - Animals MH - Cell- and Tissue-Based Therapy/*methods MH - Cellular Reprogramming/*genetics MH - DNA/genetics/metabolism MH - GATA4 Transcription Factor/*genetics MH - Genetic Therapy/methods MH - Heart/growth & development MH - Hydrogels/pharmacology MH - Mesenchymal Stem Cells/*cytology MH - Myocytes, Cardiac/*cytology MH - Plasmids/genetics MH - Polyurethanes/pharmacology MH - Transfection MH - Umbilical Cord/cytology MH - Zebrafish OTO - NOTNLM OT - cardiac repair OT - cell reprogramming OT - in situ transfection OT - naked plasmid delivery OT - polyurethane hydrogels EDAT- 2020/02/03 06:00 MHDA- 2020/07/23 06:00 CRDT- 2020/02/03 06:00 PHST- 2019/08/28 00:00 [received] PHST- 2019/12/02 00:00 [revised] PHST- 2019/12/03 00:00 [accepted] PHST- 2020/02/03 06:00 [pubmed] PHST- 2020/07/23 06:00 [medline] PHST- 2020/02/03 06:00 [entrez] AID - S1465-3249(19)30917-X [pii] AID - 10.1016/j.jcyt.2019.12.003 [doi] PST - ppublish SO - Cytotherapy. 2020 Feb;22(2):70-81. doi: 10.1016/j.jcyt.2019.12.003. Epub 2020 Jan 30.