Table 1.

Cell Delivery Applications in Natural and Synthetic Hydrogels

	Hydrogel Material(s)	Cells Delivered	Delivery Strategy	Target Application	Ref.
Encapsulated hydrogels	alginate	pancreatic islets	laparoscopic implant of microcapsules	diabetes	184
		adipose-derived and mesenchymal stem cells	injection co-delivered with BMP-2	bone regeneration	185
		CAR-programmed T cells	implanted into the peritoneal or tumor resection cavity	cancer	186
	polyethylene glycol and alginate	ovarian follicles	encapsulated scaffold	ovarian function	177
Tissue-integrating microporous hydrogels	gelatin	adipose-derived stromal cells	microporous microribbon hydrogel injected into cranial defect	bone regeneration	76
	collagen	autogenous chondrocytes	porous scaffold matrix	cartilage repair	82
	alginate	mesenchymal stem cells	injectable, void-forming microporous hydrogel	bone regeneration	178
Biodegradable hydrogels	collagen	iPSC-derived hepatocytes and endothelial cells	encapsulated polyelectrolyte fiber scaffold transplanted into liver	liver tissue regeneration	180
		neonatal astroglial cells	transplanted gel into lesion of spinal cord	spinal cord regeneration	181
	hyaluronic acid	cardiac progenitor cells	subcutaneous injection	angiogenesis	182
		neural progenitor cells	injection into stroke cavity	neural regeneration from stroke	183
	gelatin	cardiac-derived stem cells	intra-myocardial injection with the controlled release of bFGF	cardiac regeneration	172
	polyethylene glycol with degradable peptide crosslinker	adipose-derived stem cells	in situ injection with encapsulated siRNA	bone regeneration	160
		iPSC-derived endothelial cells	injection co-delivered with VEGF	muscle repair	173
	fibronectin and agarose	cardiac stem cells	in situ injection	cardiac regeneration	174
	fibrin	human embryonic stem cells	epicardial delivery of encapsulating gel	cardiac regeneration	175
		adipose-derived mesenchymal stromal cells	patch applied to surface of skin	wound healing	187