TY - JOUR
T1 - Tethering peptides onto biomimetic and injectable nanofiber microspheres to direct cellular response
AU - John, Johnson V.
AU - Choksi, Meera
AU - Chen, Shixuan
AU - Boda, Sunil Kumar
AU - Su, Yajuan
AU - McCarthy, Alec
AU - Teusink, Matthew J.
AU - Reinhardt, Richard A.
AU - Xie, Jingwei
N1 - Funding Information:
Financial Support Information: This work was supported by grants from the National Institute of General Medical Science (NIGMS) at the NIH (2P20 GM103480), National Institute of Dental and Craniofacial Research (NIDCR) at the NIH (1R21DE027516), NE LB606, and startup funds from the University of Nebraska Medical Center. Conflict of Interest: None.
Publisher Copyright:
© 2019 Elsevier Inc.
PY - 2019/11
Y1 - 2019/11
N2 - 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(ε-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.
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(ε-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.
KW - Cellular response
KW - Microvascularization
KW - Nanofiber microspheres
KW - Osteogenic differentiation
KW - Peptides conjugation
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U2 - 10.1016/j.nano.2019.102081
DO - 10.1016/j.nano.2019.102081
M3 - Article
C2 - 31400571
AN - SCOPUS:85071561746
SN - 1549-9634
VL - 22
JO - Nanomedicine: Nanotechnology, Biology, and Medicine
JF - Nanomedicine: Nanotechnology, Biology, and Medicine
M1 - 102081
ER -