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Themed collection Stem Cells

21 items
Editorial

Journal of Materials Chemistry B themed issue: stem cells

Guest editors Laura J. Suggs and Kacey G. Marra introduce this Journal of Materials Chemistry B themed issue on stem cells.

Graphical abstract: Journal of Materials Chemistry B themed issue: stem cells
From the themed collection: Stem Cells
Review Article

Bone-marrow mimicking biomaterial niches for studying hematopoietic stem and progenitor cells

This review discusses the considerations and approaches that have been employed for designing biomaterial based cultures for replicating the hematopoietic stem and progenitor cell niche.

Graphical abstract: Bone-marrow mimicking biomaterial niches for studying hematopoietic stem and progenitor cells
From the themed collection: Stem Cells
Open Access Review Article

Pluripotent stem cell derived hepatocytes: using materials to define cellular differentiation and tissue engineering

Pluripotent stem cell derived liver cells (hepatocytes) represent a promising alternative to primary tissue for biological and clinical applications.

Graphical abstract: Pluripotent stem cell derived hepatocytes: using materials to define cellular differentiation and tissue engineering
Review Article

Application of biomaterials to in vitro pluripotent stem cell disease modeling of the skeletal system

Disease-specific pluripotent stem cells can be derived through genetic manipulation of embryonic stem cells or by reprogramming somatic cells (induced pluripotent stem cells).

Graphical abstract: Application of biomaterials to in vitro pluripotent stem cell disease modeling of the skeletal system
From the themed collection: Stem Cells
Review Article

Biomaterial strategies for controlling stem cell fate via morphogen sequestration

This review explores the role of protein sequestration in the stem cell niche and how it has inspired the design of biomaterials that exploit natural protein sequestration to influence stem cell fate.

Graphical abstract: Biomaterial strategies for controlling stem cell fate via morphogen sequestration
From the themed collection: Stem Cells
Review Article

Biomaterials for pluripotent stem cell engineering: from fate determination to vascularization

Recent advancements in materials science and engineering may hold the key to overcoming reproducibility and scalability limitations currently hindering the clinical translation of stem cell therapies.

Graphical abstract: Biomaterials for pluripotent stem cell engineering: from fate determination to vascularization
From the themed collection: Stem Cells
Review Article

Three-dimensional culture of small-diameter vascular grafts

Analysis of efforts to engineer 3D small-diameter (<6 mm) vascular grafts, indicating the importance of stem cells, co-culture, and pulsatile flow.

Graphical abstract: Three-dimensional culture of small-diameter vascular grafts
From the themed collection: Stem Cells
Review Article

Oxygen delivering biomaterials for tissue engineering

Various technologies have been developed to increase oxygen delivery in vivo and enhance the effectiveness of tissue engineering strategies. The article provides an overview of the underlying mechanisms driving these technologies.

Graphical abstract: Oxygen delivering biomaterials for tissue engineering
Communication

The effect of hypoxia and laminin-rich substrates on the proliferative behavior of human neural stem cells

Human neural stem cells cultured on laminin and Matrigel under hypoxia significantly increase both the stem cell density and the percentage of activity proliferating cells.

Graphical abstract: The effect of hypoxia and laminin-rich substrates on the proliferative behavior of human neural stem cells
From the themed collection: Stem Cells
Communication

Low molecular weight gels induced differentiation of mesenchymal stem cells

Four low molecular weight gels (LMWGs) with different moduli were fabricated as scaffolds to investigate the differentiation of mesenchymal stem cells (MSCs).

Graphical abstract: Low molecular weight gels induced differentiation of mesenchymal stem cells
From the themed collection: Stem Cells
Paper

Bioactive SiO2@Ru nanoparticles for osteogenic differentiation of mesenchymal stem cells via activation of Akt signaling pathways

The surface chemistry of materials has an interactive influence on cell behavior.

Graphical abstract: Bioactive SiO2@Ru nanoparticles for osteogenic differentiation of mesenchymal stem cells via activation of Akt signaling pathways
From the themed collection: Stem Cells
Paper

Impact of TNF and IL-1β on capillary networks within engineered human adipose tissues

Inflammatory cytokines lead to capillary network disorganization and secreted factor modulation within human microvascularized engineered adipose tissues.

Graphical abstract: Impact of TNF and IL-1β on capillary networks within engineered human adipose tissues
From the themed collection: Stem Cells
Paper

Laminar ventricular myocardium on a microelectrode array-based chip

Micromolded gelatin can be used to engineer laminar human myocardium on microelectrode array chips for electrophysiological studies and drug testing.

Graphical abstract: Laminar ventricular myocardium on a microelectrode array-based chip
Paper

Dual-crosslinked hydrogel microwell system for formation and culture of multicellular human adipose tissue-derived stem cell spheroids

A novel biodegradable, biocompatible alginate-PEG hydrogel microwell system was developed with tailorable microwell physical and biochemical properties to control the uniform formation and behavior of three-dimensional multicellular human adipose tissue-derived stem cell spheroids.

Graphical abstract: Dual-crosslinked hydrogel microwell system for formation and culture of multicellular human adipose tissue-derived stem cell spheroids
From the themed collection: Stem Cells
Paper

Environmental manipulation to promote stem cell survival in vivo: use of aggregation, oxygen carrier, and BMP-2 co-delivery strategies

While mesenchymal stem cell (MSC)-based strategies for critically-sized bone defect repair hold promise, poor cell survival in vivo remains a significant barrier to the translation of these therapeutics.

Graphical abstract: Environmental manipulation to promote stem cell survival in vivo: use of aggregation, oxygen carrier, and BMP-2 co-delivery strategies
From the themed collection: Stem Cells
Paper

Substrate modulus regulates osteogenic differentiation of rat mesenchymal stem cells through integrin β1 and BMP receptor type IA

Osteoblast differentiation of mesenchymal stem cells is regulated by both soluble factor (e.g., bone morphogenetic proteins (BMP)) and mechanically transduced signaling, but the mechanisms have only been partially elucidated.

Graphical abstract: Substrate modulus regulates osteogenic differentiation of rat mesenchymal stem cells through integrin β1 and BMP receptor type IA
From the themed collection: Stem Cells
Paper

Alginate encapsulation of chitosan nanoparticles: a viable alternative to soluble chemical signaling in definitive endoderm induction of human embryonic stem cells

Chitoson nanoparticle augmented encapsulated alginate (CNPEA) induces definitive endoderm (DE) differentiation of human embryonic stem cells without growth factor supplementation.

Graphical abstract: Alginate encapsulation of chitosan nanoparticles: a viable alternative to soluble chemical signaling in definitive endoderm induction of human embryonic stem cells
From the themed collection: Stem Cells
Paper

Development of a cell delivery system using alginate microbeads for tissue regeneration

Alginate microbeads incorporating adipose-derived stem cells (ASCs) have potential for delivering viable cells capable of facilitating tissue regeneration.

Graphical abstract: Development of a cell delivery system using alginate microbeads for tissue regeneration
Paper

Mechanical loading inhibits hypertrophy in chondrogenically differentiating hMSCs within a biomimetic hydrogel

Three dimensional hydrogels are a promising vehicle for delivery of adult human bone-marrow derived mesenchymal stem cells (hMSCs) for cartilage tissue engineering.

Graphical abstract: Mechanical loading inhibits hypertrophy in chondrogenically differentiating hMSCs within a biomimetic hydrogel
From the themed collection: Stem Cells
Paper

Bioactive natural protein–hydroxyapatite nanocarriers for optimizing osteogenic differentiation of mesenchymal stem cells

Core–shell HA–silk composite nanoparticles as BMP-2 carriers show superior drug loading capacity and sustained release. The improved osteo-differentiation of stem cells on the carriers suggested a promising approach to designing bioactive nanocarrier systems with enhanced functions.

Graphical abstract: Bioactive natural protein–hydroxyapatite nanocarriers for optimizing osteogenic differentiation of mesenchymal stem cells
From the themed collection: Stem Cells
Paper

Nanoengineered biomimetic hydrogels for guiding human stem cell osteogenesis in three dimensional microenvironments

We report the development of a nanoclay-rich bioactive hydrogel for bone regeneration therapy applications.

Graphical abstract: Nanoengineered biomimetic hydrogels for guiding human stem cell osteogenesis in three dimensional microenvironments
From the themed collection: Stem Cells
21 items

About this collection

Stem cell therapies are becoming more prevalent throughout the world and are being investigated to treat a host of diseases via both intravenous injections as well as localized delivery. It is becoming increasingly recognized that the extracellular environment to which stem cells are exposed may be critical not only as delivery vehicles but also to modulate cell identity and function. This themed issue, guest edited by Professor Kacey Marra (University of Pittsburgh, USA) and Professor Laura Suggs (University of Texas at Austin, USA), focuses on the broad range of stem cell therapies and their interactions with various biomaterials. Topics highlighted include biomaterial interactions with mesenchymal, amniotic, embryonic and induced pluripotent stem cells.

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