ArticleTissue engineering. Part A2012
Improving viability of stem cells during syringe needle flow through the design of hydrogel cell carriers.
Article in Tissue engineering. Part A, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 287 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
287 citing papers in PubMed.
- An integrated hydrogel-V3 interneuron therapy promotes functional repair of spinal cord injury via neural circuit reconstruction and microenvironment remodeling.Bioactive materials · 2026Article
- Accessible Biofabrication of Anatomically Inspired Hollow and Branched Hydrogel Constructs by Soft Templating (Sof-T).Bioengineering (Basel, Switzerland) · 2026Article
- A microgel bone marrow model of mesenchymal stromal cell paracrine signaling supporting hematopoietic stem cell retention.Acta biomaterialia · 2026Article
- Programmable Microcarriers for Stem Cell Therapy: Advanced Fabrication Strategies, Stem Cell Fate Regulatory Function and Biomedical Applications.International journal of molecular sciences · 2026Review
- Regenerative Medicine Approaches to Stress Urinary Incontinence.Biomimetics (Basel, Switzerland) · 2026Review
- Modeling of Biomechanical and Functional Parameters of Hydrogel-Cell Composites Fabricated by 3D Bioprinting Using AI-Supported Approach.Materials (Basel, Switzerland) · 2026Article
- The role of mesenchymal stem cells in IgA nephropathy: current evidence and future directions.Stem cell research & therapy · 2026Review
- Bioprinting Organs-Science or Fiction?-A Review From Students to Students.Advanced healthcare materials · 2026Review
- Review
- Cell-Laden Supramolecular and Covalent Polymer Hydrogels for High-Shear Delivery: A Design of Experiments Approach.Chemistry of materials : a publication of the American Chemical Society · 2026Article
- Alpha-ketoglutarate enhances adipose-derived stem cells survival in wound healing by hypoxia-inducible factor 1-alpha-mediated redox homeostasis and glycogen-dependent bioenergetics.World journal of stem cells · 2026Article
- Acoustic Bioprinting: A Glimpse Into an Emerging Field.Small methods · 2026Review
- Needle gauge and length effects on human stem cell viability during injection: a comprehensive review.Frontiers in cell and developmental biology · 2026Review
- Optimizing mesenchymal stem cell therapy for tendon-bone healing: Multifaceted approaches and future directions.World journal of stem cells · 2025Review
- A microgel bone marrow model of mesenchymal stem cell paracrine signaling supporting hematopoietic stem cell retention.bioRxiv : the preprint server for biology · 2025Article
- Design and Validation of a Piston-Driven Syringe-Extrusion Bioprinter Using an FDM Frame.Biomimetics (Basel, Switzerland) · 2025Article
- Human induced pluripotent stem cell-derived therapies for regeneration after central nervous system injury.Neural regeneration research · 2025Article
- Microgel Aspect Ratio Influences Injectable Granular Hydrogel Scaffold Pore Structure and Cellular Invasion for Tissue Repair.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025Article
- Granular Hydrogels as Brittle Yield Stress Fluids.Advanced materials (Deerfield Beach, Fla.) · 2025Article
- Mechanoresponsive Hydrogels Emerging from Dynamic and Non-Covalent Interactions.Advanced materials (Deerfield Beach, Fla.) · 2025Review
227 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors.
Funding
Abstract
Cell transplantation is a promising therapy for a myriad of debilitating diseases; however, current delivery protocols using direct injection result in poor cell viability. We demonstrate that during the actual cell injection process, mechanical membrane disruption results in significant acute loss of viability at clinically relevant injection rates. As a strategy to protect cells from these damaging forces, we hypothesize that cell encapsulation within hydrogels of specific mechanical properties will significantly improve viability. We use a controlled in vitro model of cell injection to demonstrate success of this acute protection strategy for a wide range of cell types including human umbilical vein endothelial cells (HUVEC), human adipose stem cells, rat mesenchymal stem cells, and mouse neural progenitor cells. Specifically, alginate hydrogels with plateau storage moduli (G') ranging from 0.33 to 58.1 Pa were studied. A compliant crosslinked alginate hydrogel (G'=29.6 Pa) yielded the highest HUVEC viability, 88.9% ± 5.0%, while Newtonian solutions (i.e., buffer only) resulted in 58.7% ± 8.1% viability. Either increasing or decreasing the hydrogel storage modulus reduced this protective effect. Further, cells within noncrosslinked alginate solutions had viabilities lower than media alone, demonstrating that the protective effects are specifically a result of mechanical gelation and not the biochemistry of alginate. Experimental and theoretical data suggest that extensional flow at the entrance of the syringe needle is the main cause of acute cell death. These results provide mechanistic insight into the role of mechanical forces during cell delivery and support the use of protective hydrogels in future clinical stem cell injection studies.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.