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. 2021 Mar 17;10(9):2002026. doi: 10.1002/adhm.202002026

Table 1.

Overview of PGS used in electrospinning approaches. Abbreviations: KGN, kartogenin, mAcr‐PGS, methacrylated PGS; PBS‐DLS, poly(butylene succinate‐co‐dilinoleic succinate); PBMCs, peripheral blood mononuclear cells; PMMA, poly(methyl methacrylate); PSF, polyethersulfone; PVA, poly(vinyl alcohol); AcOH, acetic acid, EtOH, ethanol, FA, formic acid; MeOH, methanol; SRB, sulforhodamine B; TFA, trifluoroacetic acid; YM, Young's modulus

PGS in combination with Solvents Mechanical properties Other specifics Cells/animal model Cellular response Proposed application Refs.
PCL CF/EtOH

YM: 6.3 MPa (random) ‐ 9.6 MPa (aligned)

UTS: ‐

Strain: ‐

Aligned fibers HUVECs Enhanced cellular proliferation and organization by alignment; formation of highly organized endothelial constructs Vascular TE [ 105 ]
PCL, VEGF DCM/MeOH

YM: 8 ± 2 MPa

UTS: 3 ± 0.5 MPa

Strain: 142 ± 29%

VEGF functionalization; potential for the formation of vascular tree in fiber mat C2C12 myoblasts, rat cardiac progenitor cells, rat aortic endothelial cells Attachment and growth of myogenic and vasculogenic cell lines CTE [ 106 ]
Sacrificial PVA, PCL HFIP (PGS/PVA), TFE/H2O (PCL) YM: 0.67– 0.871 MPa Removal of PVA leaving neat PGS fibers behind In vivo mice model No thrombosis or stenosis; organization of contractile SMCs and neotissue in the inner part of the graft, macrophage driven‐inflammatory response to remaining polymer up to 12 months postimplantation Vascular TE [ 107 ]
PCL DCM/MeOH Patterned topography C2C12 myoblasts, neonatal rat cardiomyocytes Alignment of both cell types due to the surface topography CTE [ 110 ]
PCL CF/EtOH

YM: 4.25– 7.61 MPa

UTS: 1.78– 3.14 MPa

Strain: 218 – 453%

Good anticoagulation property with low hemolysis percentage Human vascular endothelial cell line EAhy926 Good biocompatibility Vascular TE [ 111 ]
PCL, silver CF/EtOH

YM: 3.3 MPa (uncoated) –≈8 (with Ag) MPa

UTS: ≈1.5 (uncoated) ‐ ≈2.6 (with Ag) MPa

Strain: ≈200 (uncoated) ‐ ≈175 (with Ag) %

Silver coating with antibacterial properties Diverse [ 45 ]
PCL CF/EtOH Aligned fibers Human corneal epithelial cells, human corneal keratocytes Good biocompatibility, formation of a confluent cell layer Corneal TE [ 38 ]
PCL CF/EtOH

Surface moduli of 0.26 GPa, 0.29 GPa, 0.12 GPa, and 0.16 GPa

for PGS/PCL 4:1, 3:1, 2:1

1:1

Aligned fibers Human corneal endothelial cells, human conjunctival epithelial cells, and PBMCs Best cell organization, cyto‐ and immunocompatibility in a higher content of PGS in PGS–PCL blend Corneal TE [ 16 ]
PCL, silver CF/EtOH Silver coating with pattern NIH 3T3 fibroblasts Good biocompatibility Diverse [ 97 ]
PCL, PEGylated‐CH nanoparticles CF/EtOH Additional patterning of a bioresorbable metallic heater for thermal stimulation of on‐demand antibiotic release; antibacterial properties Keratinocytes Good biocompatibility Wound healing, drug delivery [ 19 ]
PCL, gelatin, dexamethasone CF/MeOH (PGS‐PCL‐dex), AcOH/H2O (gelatin)

YM: 6.3 (wet) ‐7.8 (dry) MPa

UTS: 0.74 (dry) ‐1.64 (wet) MPa

Strain: 36.8 (dry) ‐ 102 (wet) %

Sustained drug release for 30 d Gingival fibroblast cells No evidence of cytotoxicity; cell proliferation not adversely affected by Dex release Soft TE [ 98 ]
PCL, heparin TFE

YM: ≈3 –≈15.5 MPa

UTS: ≈2–≈4 MPa

Strain: ≈250 –≈900%

Heparin functionalization HUVECs Improved cell attachment and proliferation after grafting of heparin Diverse [ 99 ]
PCL, CH, β‐TCP CF (PGS‐PCL‐β‐TCP), TFA (PGS‐PCL‐CH)

YM: ‐

UTS: ≈1.1 –≈1.4 MPa

Strain: ≈0.8 –≈2.4

Bilayered Human fetal osteoblasts Optimum cell behavior in blend composition with 10% β‐TCP BTE [ 51 ]
PCL, hydroxyapatite nanoparticles d.n.a. d.n.a. d.n.a. Bone marrow‐derived MSCs Excellent biocompatibility and osteoblast adhesion Bone and cartilage TE [ 100 ]
PCL CF/acetone (PGS‐PCL), AcOH/FA (PCL)

YM: 2.6– 3.1 MPa

UTS: 0.8– 1.5 MPa

Strain: ≈58 –≈65%

Nonhemolytic behavior MSCs Supported attachment, growth, and infiltration of cells by blend fiber mat Vascular TE [ 101 ]
PCL AcOH

YM: 7– 11 MPa

UTS: 4.4– 5 MPa

Strain: 304–333%

Use of mildly cross‐linked PGS for electrospinning Bone marrow‐derived stroma cell line ST2 Better cytocompatibility and cell adhesion after sterilization by 70% ethanol compared to UV sterilization CTE [ 33 ]
PCL CF/EtOH/DMF

YM: 8.32 (dry) – 8.62 (wet) MPa

UTS: ‐

Strain: 783 (dry)–1133 (wet) %

Bilayered construct with PU membrane layer Mouse lung fibroblast cells (L929), HUVECs No toxic effect of leachable components on fibroblasts; endothelial cell adhesion and proliferation on PGS/PCL fiber mat Hernia treatment [ 104 ]
PCL, KGN TFE

YM: 5.06 (nonaligned)– 11.78 (aligned) MPa

UTS: ≈2.3 (non‐aligned) –≈3 (aligned) MPa

Aligned core–shell fibers Human bone marrow MSC (hBMSC) Significant proliferation and chondrogenic differentiation on KGN‐loaded aligned nanofibrous scaffold Cartilage TE [ 103 ]
Sacrificial PVA H2O (PVA), THF (PGS)

YM: ≈3 MPa (wet) –≈33 MPa (dry)

UTS: ≈ 1.5 MPa (wet) –≈7 MPa (dry)

Strain: 95 % (wet)– ≈130% (dry)

PGS only fibers SNL mouse fibroblasts Good biocompatibility Soft TE [ 133 ]
Sacrificial PVA HFIP

YM: 0.1– 0.8 MPa

UTS: ≈1 MPa

Strain: 200 –800%

PGS only fibers 3T3 fibroblasts, Human cord blood endothelial cells (hcbEC), in vivo mice model

Round to elongated adhered cell morphology; higher cytocompatibility of highly cross‐linked materials;

In vivo: surrounded by collagen‐rich matrix and multinucleated giant cells and fibroblast‐like cells in implant bulk

Diverse [ 96 ]
PVA DMF/H2O

YM: 0.04 (wet)– 7.08 (dry) MPa

UTS: 2 (dry)–70 (dry) MPa

Strain: 34.5 (dry)–287 (wet) %

Modified PGS synthesis (1:0.8 molar mixture of glycerol and sebacic acid; 170 °C; 3, 5, and 7 h);

Aligned fibers

Rat pheochromocytoma cells (PC12) Good biocompatibility Nerve TE [ 114 ]
PVA, lignin H2O, DMF

YM: 0.1– 0.4 MPa

UTS: 20.24–72.8 MPa

Strain: 51– 179.5%

Rat pheochromocytoma cells PC12 Cell proliferation and neural cell differentiation in the presence of lignin Nerve TE [ 113 ]
PLLA CF/DMF (PLLA), THF (PGS)

YM: 6.5– 15.8 MPa

UTS: 2.2– 4.5 MPa

Strain: 25.1–43.4%

Aligned core–shell fibers Diverse [ 118 ]
PLLA DMF/DMC

YM: 7.2– 336.2 MPa

UTS: 1.1– 6.8 MPa

Strain:13– 66%

During cross‐linking creation of core (PLLA)–shell (PGS) fibers Hypothalamus A59 nerve cells Enhanced cell adhesion and proliferation for core–shell samples Nerve TE [ 119 ]
PLGA HFIP (PGS), NaCl, SRB dye, HFIP (PLGA) Diverse [ 121 ]
PLGA HFIP

YM: 1.3 ± 0.66 MPa

UTS: ‐

Strain: –

SIMS salivary ductal epithelial cell, NIH3T3 mesenchymal cells Cell penetration in the structure and apical localization of tight junction proteins; coculture facilitated epithelial tissue reorganization and significantly increased apical localization of tight junction protein Soft TE [ 122 ]
PLA HFIP Different esterification levels of PGS Diverse [ 117 ]
Sacrificial PEO/PLA THF (PGS), THF/DMF (PEO/PLA)

YM: ≈1– 140 MPa

UTS: ≈0.5–6 MPa

Strain: ≈1.05–2.5%

PGS only fibers HUASMCs Good biocompatibility Soft TE [ 120 ]
Sacrificial PEO/PLA THF (PGS), DCM/DMF (PEO‐PLA)

YM: ≈0.5 (perpendicular) – ≈ 1 (in alignment) MPa

UTS: ≈0.36 (perpendicular) –≈0.72 (in alignment) MPa

Strain: ≈160 (perpendicular) – ≈ 170 (in alignment) %

Aligned core–shell fibers HUASMCs Cell adhesion on random and aligned fibers, and cell alignment on aligned fibers Diverse [ 134 ]
Collagen type I, silk fibroin HFIP

YM: 2.3– 5.0 MPa

UTS: 0.8– 1.5 MPa

Strain: 30–70%

Low thrombogenic potential Endothelial cells Cells adhered, proliferated, and formed cell–cell junctions Vascular TE [ 127 ]
Fibrinogen, VEGF HFIP VEGF functionalization In vivo porcine model Improvement in ejection fraction (EF) and prevention of LV enlargement; expression of cardiac marker proteins CTE [ 129 ]
PBS‐DLA DCM/MeOH

YM: 1.2– 7.5 MPa

UTS: 1.58–2.7 MPa

Strain: 85.5–147.6%

C2C12 myoblasts, postnatal rat cardiomyocytes Cytocompatibility with C2C12 myoblasts, the higher the PBS–DLA content in the fiber mats, the better the cell attachment and proliferation; postnatal rat cardiomyocytes better attachment on higher PGS content fibers with well‐aligned sarcomeres and high amounts of connexin43 CTE [ 115 ]
PBS‐DLS DCM/MeOh

YM: 3.5 (37 °C)–4.7 (RT) MPa

UTS: 1.23 (37 °C)– 1.8 (RT) MPa

Strain: ≈132%

Surface modification by exposing carboxylic groups Soft TE [ 116 ]
Zein AcOH

YM: 6.5– 14 MPa

UTS: 0.32–13 MPa

Strain: 5–7%

CTE [ 130 ]
Zein AcOH

YM: 7– 32 MPa

UTS: 1–‐ 2 MPa

Strain: 5– 11 MPa

Use of mildly cross‐linked PGS for electrospinning Soft TE [ 131 ]
PGS–PMMA, gelatin HFIP Methyl mAcr–PGS Rat PC12 cells Fiber mats promoted cell proliferation, elongated cell morphology, potential for neurite outgrowth Nerve TE [ 20 ]
PSF THF/DMF Compressible, moldable, 3D, drug delivery In vivo mice model Diverse [ 123 ]
Chitin, Lignin, PEO EtOH, NaOH, H2O

YM: ≈7–≈12 MPa

UTS: ≈0.75 –≈3 MPa

Strain: ≈20 –≈140%

Antibacterial and antifungal activity Wound healing [ 132 ]
SIM, PHB, CIP CF/DMF(PGS‐Sim), TFA (PHB‐CIP) Dual drug incorporation in core–shell fibers; burst release of CIP, slower release SIM; antibacterial activity Wound healing [ 124 ]
Gelatin, CIP Aqueous AcOH Antibacterial activity Fibroblast cell line (L929) Promoted cell attachment, growth, proliferation, and immigration from the surface into interconnected pores Wound healing [ 128 ]
TPU

CF/DMF or HFIP or

TFE/AcOH

YM: 0.83– 1.14 MPa

UTS:8.76–9.67 MPa

Strain: 339–375%

Leaf‐like structure observed for HFIP Swiss mouse NIH 3T3 fibroblasts Improved biocompatibility compared to TPU only scaffolds Vocal fold TE [ 35 ]
PVP HFIP (PGS), DMF/EtOH/H2O (PVP)

YM: 1.3– 170 MPa

UTS: 1.1– 3.5 MPa

Strain: 3.1–328%

Nozzle free electrospinning Human skin fibroblast cells (HDF‐hTERT) Good cell viability and proliferation Skin TE [ 232 ]
Poly(glycerol‐1,8‐octanediol‐sebacate) CF/EtOH

YM: 3.61 MPa uncross‐linked, 106.1 MPa cross‐linked

UTS: 0.13 MPa uncross‐linked, 4.94 MPa cross‐linked

Strain: 8% uncross‐linked, 23% cross‐linked

PGS synthesized by Candida antartica lipase B catalysis; different fractions of glycerol units replaced by 1,8‐octanediol units Diverse [ 135 ]