PMID- 31400571 OWN - NLM STAT- MEDLINE DCOM- 20200625 LR - 20231020 IS - 1549-9642 (Electronic) IS - 1549-9634 (Print) IS - 1549-9634 (Linking) VI - 22 DP - 2019 Nov TI - Tethering peptides onto biomimetic and injectable nanofiber microspheres to direct cellular response. PG - 102081 LID - S1549-9634(19)30165-0 [pii] LID - 10.1016/j.nano.2019.102081 [doi] AB - Biomimetic and injectable nanofiber microspheres (NMs) could be ideal candidate for minimally invasive tissue repair. Herein, we report a facile approach to fabricate peptide-tethered NMs by combining electrospinning, electrospraying, and surface conjugation techniques. The composition and size of NMs can be tuned by varying the processing parameters during the fabrication. Further, bone morphogenic protein-2 (BMP-2) and vascular endothelial growth factor (VEGF) mimicking peptides have been successfully tethered onto poly(epsilon-caprolactone) (PCL):gelatin:(gelatin-methacryloyl) (GelMA)(1:0.5:0.5) NMs through photocrosslinking of the methacrylic group in GelMA and octenyl alanine (OCTAL) in the modified peptides. The BMP-2-OCTAL peptide-tethered NMs significantly promote osteogenic differentiation of bone marrow-derived stem cells (BMSCs). Moreover, human umbilical vein endothelial cells (HUVECs) seeded on VEGF mimicking peptide QK-OCTAL-tethered NMs significantly up-regulated vascular-specific proteins, leading to microvascularization. The strategy developed in this work holds great potential in developing a biomimetic and injectable carrier to efficiently direct cellular response (Osteogenesis and Angiogenesis) for tissue repair. CI - Copyright (c) 2019 Elsevier Inc. All rights reserved. FAU - John, Johnson V AU - John JV AD - Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, College of Medicine, University of Nebraska Medical Center, Omaha, NE, USA. FAU - Choksi, Meera AU - Choksi M AD - Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, College of Medicine, University of Nebraska Medical Center, Omaha, NE, USA. FAU - Chen, Shixuan AU - Chen S AD - Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, College of Medicine, University of Nebraska Medical Center, Omaha, NE, USA. FAU - Boda, Sunil Kumar AU - Boda SK AD - Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, College of Medicine, University of Nebraska Medical Center, Omaha, NE, USA. FAU - Su, Yajuan AU - Su Y AD - Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, College of Medicine, University of Nebraska Medical Center, Omaha, NE, USA. FAU - McCarthy, Alec AU - McCarthy A AD - Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, College of Medicine, University of Nebraska Medical Center, Omaha, NE, USA. FAU - Teusink, Matthew J AU - Teusink MJ AD - Department of Orthopaedic Surgery and Rehabilitation, College of Medicine, University of Nebraska Medical Center, Omaha, NE, USA. FAU - Reinhardt, Richard A AU - Reinhardt RA AD - Department of Surgical Specialties, College of Dentistry, University of Nebraska Medical Center, Omaha, NE, USA. FAU - Xie, Jingwei AU - Xie J AD - Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, College of Medicine, University of Nebraska Medical Center, Omaha, NE, USA; Department of Mechanical and Materials Engineering, College of Engineering, University of Nebraska Lincoln, Lincoln, NE, USA. Electronic address: jingwei.xie@unmc.edu. LA - eng GR - P20 GM103480/GM/NIGMS NIH HHS/United States GR - P30 GM127200/GM/NIGMS NIH HHS/United States GR - R21 DE027516/DE/NIDCR NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20190807 PL - United States TA - Nanomedicine JT - Nanomedicine : nanotechnology, biology, and medicine JID - 101233142 RN - 0 (Bone Morphogenetic Protein 2) RN - 0 (Peptides) RN - 0 (Polyesters) RN - 0 (RNA, Messenger) RN - 106441-73-0 (Osteopontin) RN - 24980-41-4 (polycaprolactone) RN - 9000-70-8 (Gelatin) SB - IM MH - Animals MH - Biomimetic Materials/*pharmacology MH - Bone Morphogenetic Protein 2/pharmacology MH - Cell Differentiation/drug effects/genetics MH - Gelatin/pharmacology MH - Human Umbilical Vein Endothelial Cells/drug effects MH - Humans MH - *Injections MH - Kinetics MH - Light MH - Mesenchymal Stem Cells/*cytology/drug effects MH - *Microspheres MH - Microvessels/drug effects/metabolism MH - Nanofibers/*chemistry/ultrastructure MH - Neovascularization, Physiologic/drug effects MH - Osteogenesis/drug effects/genetics MH - Osteopontin/metabolism MH - Peptides/*pharmacology MH - Polyesters/pharmacology MH - RNA, Messenger/genetics/metabolism MH - Tissue Engineering PMC - PMC6904511 MID - NIHMS1536827 OTO - NOTNLM OT - Cellular response OT - Microvascularization OT - Nanofiber microspheres OT - Osteogenic differentiation OT - Peptides conjugation COIS- Conflict of Interest: None. EDAT- 2019/08/11 06:00 MHDA- 2020/06/26 06:00 PMCR- 2020/11/01 CRDT- 2019/08/11 06:00 PHST- 2019/05/15 00:00 [received] PHST- 2019/07/30 00:00 [revised] PHST- 2019/07/31 00:00 [accepted] PHST- 2019/08/11 06:00 [pubmed] PHST- 2020/06/26 06:00 [medline] PHST- 2019/08/11 06:00 [entrez] PHST- 2020/11/01 00:00 [pmc-release] AID - S1549-9634(19)30165-0 [pii] AID - 10.1016/j.nano.2019.102081 [doi] PST - ppublish SO - Nanomedicine. 2019 Nov;22:102081. doi: 10.1016/j.nano.2019.102081. Epub 2019 Aug 7.