Fig. 1

Schematic illustration of the MSC-loaded conductive hydrogel for cardiac repair. Injectable conductive nanocomposite hydrogel (GNR@SN/Gel) fabricated by GNRs, SNs, and PLGA-PEG-PLGA was combined with MSCs to treat myocardial infarction. GNRs act as a conductive component in hydrogel, SNs act as a crosslinker of hydrogel and a stabilizing agent of GNRs, and provide adhesion of hydrogel to MSCs. The thermal sensitive GNR@SN/Gel has a critical transition temperature of 27 °C, so it was flowable sol phase at 25 °C and transformed into a gel at 37 °C