Biomedicina: Enviaments recents
Ara mostrant els elements 641-660 de 779
Hyaluronic acid-based bioink improves the differentiation and network formation of neural progenitor cells
Introduction: Three-dimensional (3D) bioprinting is a promising technique for the development of neuronal in vitro models because it controls the deposition of materials and cells. Finding a biomaterial that supports neural ...
Novel Decellularization Method for Tissue Slices
Decellularization procedures have been developed and optimized for the entire organ or tissue blocks, by either perfusion of decellularizing agents through the tissue’s vasculature or submerging large sections in decellularizing ...
Dynamic filopodial forces induce accumulation, damage, and plastic remodeling of 3D extracellular matrices
The mechanical properties of the extracellular matrix (ECM)–a complex, 3D, fibrillar scaffold of cells in physiological environments–modulate cell behavior and can drive tissue morphogenesis, regeneration, and disease ...
First-in-human PeriCord cardiac bioimplant: Scalability and GMP manufacturing of an allogeneic engineered tissue graft
Background: Small cardiac tissue engineering constructs show promise for limiting post-infarct sequelae in animal models. This study sought to scale-up a 2-cm2 preclinical construct into a human-size advanced therapy ...
Lung bioengineering: physical stimuli and stem/progenitor cell biology interplay towards biofabricating a functional organ
A current approach to obtain bioengineered lungs as a future alternative for transplantation is based on seeding stem cells on decellularized lung scaffolds. A fundamental question to be solved in this approach is how to ...
3D collagen migration patterns reveal a SMAD3-dependent and TGF-β1-independent mechanism of recruitment for tumour-associated fibroblasts in lung adenocarcinoma
The TGF-β1 transcription factor SMAD3 is epigenetically repressed in tumour-associated fibroblasts (TAFs) from lung squamous cell carcinoma (SCC) but not adenocarcinoma (ADC) patients, which elicits a compensatory increase ...
TRPM7 controls mesenchymal features of breast cancer cells by tensional regulation of SOX4
Mechanically induced signaling pathways are important drivers of tumor progression. However, if and how mechanical signals affect metastasis or therapy response remains poorly understood. We previously found that the ...
Regulation of cell cycle progression by cell-cell and cell-matrix forces
It has long been proposed that the cell cycle is regulated by physical forces at the cell-cell and cell-extracellular matrix (ECM) interfaces. However, the evolution of these forces during the cycle has never been measured ...
Monitoring developmental force distributions in reconstituted embryonic epithelia.
The way cells are organized within a tissue dictates how they sense and respond to extracellular signals, as cues are received and interpreted based on expression and organization of receptors, downstream signaling proteins, ...
Allosteric Modulation of NMDARs Reverses Patients' Autoantibody Effects in Mice
Background and Objectives To demonstrate that an analog (SGE-301) of a brain-derived cholesterol metabolite, 24(S)- hydroxycholesterol, which is a selective positive allosteric modulator (PAM) of NMDA re- ceptors (NMDARs), ...
Functional Interaction Between Caveolin 1 and LRRC8-Mediated Volume-Regulated Anion Channel
Volume-regulated anion channel (VRAC), constituted by leucine-rich repeat-containing 8 (LRRC8) heteromers, is crucial for volume homeostasis in vertebrate cells. This widely expressed channel has been associated with ...
Stem Cells for Huntington's Disease (SC4HD): An International Consortium to Facilitate Stem Cell-Based Therapy for Huntington's Disease
Huntington's disease (HD) research is entering an exciting phase, with new approaches such as huntingtin lowering strategies and cell therapies on the horizon. Technological advances to direct the differentiation of stem ...
Neutrophils and neutrophil extracellular trap components: emerging biomarkers and therapeutic targets for age-related eye diseases
Age-related eye diseases, including dry eye, glaucoma, age-related macular degeneration, and diabetic retinopathy, represent a major global health issue based on their increasing prevalence and disabling action. Unraveling ...
Embryonic self-fracking
From a broken bone to a major earthquake, the fracture of a material usually means trouble. However, in some practical applications engineers have learned how to harness the mechanisms of fracture. This is illustrated by ...
STAT3 and REDD1: an unconventional story of gene repression
The non-canonical functions of the transcription factor STAT3 have been poorly studied in comparison to its canonical mechanisms of gene expression activation. Here, Köhler et al. put the spotlight on a novel unconventional ...
PTK2B/Pyk2 overexpression improves a mouse model of Alzheimer's disease
Pyk2 is a Ca2+-activated non-receptor tyrosine kinase enriched in forebrain neurons and involved in synaptic regulation. Human genetic studies associated PTK2B, the gene coding Pyk2, with risk for Alzheimer's disease (AD). ...
Paradigmatic de novo GRIN1 variants recapitulate pathophysiological mechanisms underlying GRIN1-related disorder clinical spectrum
Background: GRIN-related disorders (GRD), the so-called grinpathies, is a group of rare encephalopathies caused by mutations affecting GRIN genes (mostly GRIN1, GRIN2A and GRIN2B genes), which encode for the GluN subunit ...
The GRP78-PERK axis contributes to memory and synaptic impairments in Huntington's disease R6/1 mice.
Increasing evidence indicates that a key factor in neurodegenerative diseases is the activation of the unfolded protein response (UPR) caused by an accumulation of misfolded proteins in the endoplasmic reticulum (ER stress). ...
Proton Sensing on the Ocular Surface: Implications in Eye Pain
Protons reaching the eyeball from exogenous acidic substances or released from damaged cells during inflammation, immune cells, after tissue injury or during chronic ophthalmic conditions, activate or modulate ion channels ...
Hypothalamic pregnenolone mediates recognition memory in the context of metabolic disorders
Obesity and type-2 diabetes are associated with cognitive dysfunction. Since the hypothalamus is implicated in energy balance control and memory disorders, we hypothesized that specific neurons in this brain region are at ...
