5,058 results match your criteria: "Stem Cell Research Center[Affiliation]"

Progress in Biomaterials-Enhanced Vascularization by Modulating Physical Properties.

ACS Biomater Sci Eng

November 2024

Department of Physiology and Pathophysiology, School of Basic Medical Sciences, State Key Laboratory of Vascular Homeostasis and Remodeling, Clinical Stem Cell Research Center, Peking University Third Hospital, Peking University, Beijing 100191, China.

Article Synopsis
  • Sufficient blood flow and a good vascular system are essential for delivering nutrients and oxygen in biomaterials used for medical purposes.
  • Exploring the best physical properties of these biomaterials, like pore structure and stiffness, can enhance their ability to develop blood vessels, improving their effectiveness in tissue engineering.
  • Understanding these properties can help create better research models and personalized treatments for issues like bone regeneration, wound healing, islet transplantation, and heart repair.
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Future of reproductive biotechnologies in water buffalo in Southeast Asian countries.

Theriogenology

February 2025

Embryo Technology and Stem Cell Research Center, School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand. Electronic address:

The future of reproductive biotechnologies in water buffalo in Southeast Asian countries holds significant promise for enhancing genetic quality and productivity. Fixed-time artificial insemination remains the commonly used technology, with advances in assisted reproductive technologies (ART) such as in vitro embryo production (IVEP), embryo transfer (ET), and the use of sex-sorted sperm increasingly adopted to improve breeding efficiency. These technologies overcome traditional breeding limitations, such as low reproductive rates, genetic diversity constraints, and the production of sex-predetermined offspring.

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Minimally invasive serial collection of cerebrospinal fluid reveals sex-dependent differences in neuroinflammation in a rat model of mild traumatic brain injury.

Brain Behav Immun

November 2024

Sue & Bill Gross Stem Cell Research Center, University of California - Irvine, Irvine, CA 92697, United States; Institute for Memory Impairments & Neurological Disorders, University of California - Irvine, Irvine, CA 92697, United States; Physical Medicine & Rehabilitation, University of California - Irvine, Irvine, CA 92697, United States; Anatomy & Neurobiology, University of California - Irvine, Irvine, CA 92697, United States. Electronic address:

Traumatic brain injuries (TBI) are the seventh leading cause of disability globally with 48.99 million prevalent cases and 7.08 million years lived with diability.

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Alzheimer's disease (AD) is the most prevalent neurodegenerative disorder characterized by extracellular amyloid plaques and neuronal Tau tangles. A recent study found that the APOE3 Christchurch (APOECh) variant could delay AD progression. However, the underlying mechanisms remain unclear.

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Conformation Influences Biological Fates of Peptide-Based Nanofilaments by Modulating Protein Adsorption and Interfilament Entanglement.

Adv Mater

November 2024

State Key Laboratory of Drug Research & Center of Pharmaceutics, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China.

Filamentous structures exert biological functions mediated by multivalent interactions with their counterparts in sharp contrast with spherical ones. The physicochemical properties and unique behaviors of nanofilaments that are associated with multivalent interaction with protein are poorly understood. Here, peptide-based nanofilaments containing different homotetrapeptidic inserts are reported and their protein adsorption and biological fates are tested.

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Differential Replication and Oncolytic Effects of Zika Virus in Aggressive CNS Tumor Cells: Insights from Organoid and Tumoroid Models.

Viruses

November 2024

Human Genome and Stem Cell Research Center (CEGH-CEL), Department of Genetics and Evolutionary Biology, Institute of Biosciences, University of São Paulo, Cidade Universitária, São Paulo 05508-090, SP, Brazil.

Article Synopsis
  • CNS cancers like Glioblastoma and pediatric tumors face significant treatment challenges due to their poor response to conventional therapies such as radiation and chemotherapy.* -
  • Recent research highlights the potential of the Zika virus (ZIKV) as an oncolytic treatment, showing its ability to infect and kill malignant CNS tumor cells while having a preference for tumor rather than normal cells.* -
  • Experiments using hybrid co-culture models demonstrated that ZIKV replication was enhanced in tumor cells compared to normal cells, leading to notable reductions in the number of certain tumor types, although not uniformly effective across all cancers.*
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Molecular and Functional Assessment of and in Individuals with Tuberous Sclerosis Complex.

Genes (Basel)

November 2024

Human Genome and Stem Cell Research Center, Department of Genetics and Evolutionary Biology, Instituto de Biociências, Universidade de São Paulo, São Paulo 05508-090, Brazil.

Article Synopsis
  • * A genetic diagnosis of TSC aids in confirming the clinical diagnosis and helps in managing care and monitoring patients.
  • * In a study of 116 individuals, 91% had pathogenic DNA alterations in TSC-related genes, with detailed functional assessments revealing novel variants impacting TSC protein activity.
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() has emerged as a prominent multidrug-resistant (MDR) pathogen, significantly complicating treatment strategies due to its formidable resistance mechanisms, particularly against carbapenems. Reduced membrane permeability, active antibiotic efflux, and enzymatic hydrolysis via different β-lactamases are the main resistance mechanisms displayed by , and they are all effective against successful treatment approaches. This means that alternate treatment approaches, such as combination therapy that incorporates beta-lactams, β-lactamase inhibitors, and novel antibiotics like cefiderocol, must be investigated immediately.

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Background: Extracellular vesicles (EVs) have been considered promising tools in regenerative medicine. However, the nanoscale properties of EVs make them sensitive to environmental conditions. Optimal storage protocols are crucial for maintaining EV structural, molecular, and functional integrity.

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Article Synopsis
  • * Diabetic rats received HAM scaffolds with and without curcumin for 21 days, with evaluations showing significant improvements in wound healing parameters like closure rates, cellular regeneration, and collagen deposition in both treated groups.
  • * The results indicated that the combined treatment (HAMS/β/C group) outperformed the HAM-only treatment in nearly all healing metrics, while also reducing inflammation, showcasing a potentially effective method for diabetic wound management.
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Cell therapy has emerged as a prominent leader in regenerative medicine, offering potential solutions for various disorders, including infertility. Half of all infertility cases are related to male factors. The objective of this study is to systematically summarize the existing knowledge regarding studies on stem cell-based therapy for the regeneration of impaired spermatogenesis.

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Gelatin-Mediated Vascular Self-Assembly via a YAP-MMP Signaling Axis.

Adv Funct Mater

September 2024

Department of Chemical and Biomolecular Engineering, University of California, Irvine, CA, United States.

Tissue self-assembly relies on the interplay between structural cues imparted by the extracellular matrix and instructive chemical factors that guide cellular signaling pathways. Here, we report that endothelial cell-laden gelatin-based hydrogels with optimized mechanical and chemical properties facilitate vasculogenesis and recruitment of endogenous blood vessels . We demonstrate that these engineered matrices, with tailored viscoelastic features and stiffness, drive vascular self-assembly in a yes-associated protein mechanosensing-dependent manner through αvβ3 integrin and matrix metalloproteinase 2 activity.

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mA Reader PRRC2A Promotes Colorectal Cancer Progression via CK1ε-Mediated Activation of WNT and YAP Signaling Pathways.

Adv Sci (Weinh)

November 2024

The First Affiliated Hospital of Zhengzhou University, Tianjian Laboratory of Advanced Biomedical Sciences, Academy of Medical Sciences, Zhengzhou University, Zhengzhou, Henan, 450052, China.

Colorectal cancer (CRC) is the third most common cancer type and the second highest mortality rate among cancers. However, the mechanisms underlying CRC progression remain to be fully understood. In this work, a recently identified mA-modified RNA reader protein Proline-rich Coiled-coil 2a (PRRC2A) is markedly upregulated in CRC, and intestinal epithelium-specific deletion of Prrc2a significantly suppressed tumor cell growth, stemness, and migratory capacity, while its overexpression promoted these behaviors.

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In Vitro Modeling of Atherosclerosis Using iPSC-Derived Blood Vessel Organoids.

Adv Healthc Mater

January 2025

Adult Stem Cell Research Center and Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, 08826, Republic of Korea.

As modeling of atherosclerosis requires recapitulating complex interactions with vasculature and immune cells, previous in vitro models have limitations due to their insufficient 3D vascular structures. However, induced pluripotent stem cell-derived blood vessel organoids (BVOs) are applicable for modeling vascular diseases, containing multiple cell types, including endothelial and vascular smooth muscle cells self-assembled into a blood vessel structure. Atherosclerotic BVOs with a microenvironment associated with atherogenesis, such as shear stress, low-density lipoprotein, pro-inflammatory cytokine, and monocyte co-culture are successfully developed.

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GNAO1 overexpression promotes neural differentiation of glioma stem-like cells and reduces tumorigenicity through TRIM21/CREB/HES1 axis.

Oncogene

November 2024

State Key Laboratory of Systems Medicine for Cancer, Clinical Stem Cell Research Center, Ren Ji Hospital, Shanghai Cancer Institute, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, China.

Inducing tumor cell differentiation is a promising strategy for treating malignant cancers, including glioma, yet the critical regulator(s) underlying glioma cell differentiation is poorly understood. Here, we identify G Protein Subunit Alpha O1 (GNAO1) as a critical regulator of neural differentiation of glioma stem-like cells (GSCs). GNAO1 expression was lower in gliomas than in normal neuronal tissues and high expression of GNAO1 correlated with a better prognosis.

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Generation of iPSC-derived human venous endothelial cells for the modeling of vascular malformations and drug discovery.

Cell Stem Cell

November 2024

Department of Physiology and Pathophysiology, School of Basic Medical Sciences, State Key Laboratory of Vascular Homeostasis and Remodeling, Clinical Stem Cell Research Center, Peking University Third Hospital, Peking University, Beijing 100191, China. Electronic address:

Venous malformations (VMs) represent prevalent vascular anomalies typically attributed to non-inherited somatic mutations within venous endothelial cells (VECs). The lack of robust disease models for VMs impedes drug discovery. Here, we devise a robust protocol for the generation of human induced VECs (iVECs) through manipulation of cell-cycle dynamics via the retinoic signaling pathway.

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Hemophagocytic lymphohistiocytosis (HLH) is a life-threatening disease, with a high mortality if left untreated. In addition, the disease has unique diagnostic challenges. Therefore, despite the existing guidelines on management, current clinical practice data is informative on the course and outcome.

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The pathogenesis of Alzheimer's disease (AD) depends on environmental and heritable factors, with its molecular etiology still unclear. Here we present a spatial transcriptomic (ST) and single-nucleus transcriptomic survey of late-onset sporadic AD and AD in Down syndrome (DSAD). Studying DSAD provides an opportunity to enhance our understanding of the AD transcriptome, potentially bridging the gap between genetic mouse models and sporadic AD.

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The MICA deletion across different populations.

Hum Immunol

November 2024

São Paulo State University (UNESP), Medical School, Botucatu, Brazil; São Paulo State University (UNESP), Institute of Biosciences, Botucatu, Brazil. Electronic address:

The MICA gene encodes a glycoprotein upregulated upon cellular stress, particularly in oxidative stress, intracellular infections, and tumorigenesis. This stress-signaling molecule interacts with the activating receptor NKG2D from Natural Killer (NK) and some T lymphocytes, stimulating their cytotoxic activity. MICA is encoded within the human Major Histocompatibility Complex next to the HLA-B locus and is highly polymorphic.

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One of the most famous and heterogeneous cancers worldwide is breast cancer (BC). Owing to differences in the gene expression profiles and clinical features of distinct BC subtypes, different treatments are prescribed for patients. However, even with more thorough pathological evaluations of tumors than in the past, available treatments do not perform equally well for all individuals.

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Natural Products Produced by the Species of Bacillus cereus Group: Recent Updates.

J Basic Microbiol

November 2024

Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla, Pue, Mexico.

Article Synopsis
  • - The Bacillus cereus group produces a variety of antimicrobial compounds that help protect plants from pathogens and pests, while enhancing growth and stress tolerance.
  • - These bacteria also play a crucial role in bioremediation, breaking down harmful environmental pollutants and producing beneficial enzymes, yet they can cause food poisoning due to enterotoxin production.
  • - Overall, B. cereus has diverse applications in agriculture, industry, and medicine, including the development of eco-friendly materials and potential health benefits like cancer prevention through selenium nanoparticle production.
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CTNND1 affects trophoblast proliferation and specification during human embryo implantation.

Biol Reprod

November 2024

Department of Reproductive center, Tongji Hospital, School of Medicine, Tongji University, Shanghai 200065, China.

The placenta, serving as the crucial link between maternal and infant, plays a pivotal role in maintaining a healthy pregnancy. Placental dysplasia can lead to various complications, underscoring the importance of understanding trophoblast lineage development. During peri-implantation, the trophectoderm (TE) undergoes differentiation into cytotrophoblast (CTB), syncytiotrophoblast (STB), and extravillous trophoblast (EVT).

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The interplay of RNA modifications - deposited by "writers", removed by "erasers" and identified by RNA binding proteins known as "readers" - forms the basis of the epitranscriptomic gene regulation hypothesis. Recent studies have identified the oncofetal RNA-binding protein IGF2BP3 as a "reader" of the N6-methyladenosine (mA) modification and crucial for regulating gene expression. Yet, how its function as a reader overlaps with its critical oncogenic function in leukemia remains an open question.

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