1,606 results match your criteria: "Royan Institute for Stem Cell Biology & Technology[Affiliation]"

Despite a lower estimated rate of cancer incidence in Iran compared to the global average, the trend is unfortunately increasing. This necessitates the implementation of early detection of cancer and targeted therapies to effectively treat various types of cancer. Therefore, the 5th "International Royan Cancer Conference: From Bench to Bedside" was held to focus on critical cancer-related aspects such as gene- and cell therapy, immunotherapy, oligonucleotides in cancer treatment, biosensors for detection, and drug delivery.

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Remyelination refers to myelin regeneration, which reestablishes metabolic supports to axons. However, remyelination often fails in multiple sclerosis (MS), leading to chronic demyelination and axonal degeneration. Therefore, pharmacological approaches toward enhanced remyelination are highly demanded.

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Neuroprotective effects of MK-801 against cerebral ischemia reperfusion.

Heliyon

July 2024

Pain Research Center, Neuroscience Institute, Imam Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran.

Introduction: & Objective: Cerebral ischemia/reperfusion (I/R) injury, the second cause of death globally, involves increased NMDA receptor activity leading to neuronal damage due to excessive sodium and calcium ion entry. Therefore, targeting NMDA receptor may potentially reduce cell death induced by brain injury. Our study aimed to investigate the role of NMDA receptors in hippocampal neuronal activity induced by I/R.

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Machine learning and experimental analyses identified miRNA expression models associated with metastatic osteosarcoma.

Biochim Biophys Acta Mol Basis Dis

October 2024

Department of Regenerative Medicine, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran; Experimental Cancer Medicine, Institution for Laboratory Medicine, Karolinska Institute, Stockholm, Sweden. Electronic address:

Article Synopsis
  • Osteosarcoma is a highly invasive and metastatic bone cancer with poor prognosis, prompting research into early diagnostic biomarkers using miRNA expression profiles.
  • The study employed RNA sequencing and microarray data to identify key miRNAs associated with metastatic osteosarcoma, leading to the development of diagnostic models powered by machine learning algorithms.
  • The findings highlight miR-34c-3p and miR-154-3p as potential biomarkers for early diagnosis, demonstrating high diagnostic accuracy and revealing significant correlations with tumor grade and metastasis detection.
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Article Synopsis
  • Early fetal sex determination is essential for managing prenatal diagnoses of X-linked genetic issues and congenital adrenal hyperplasia.
  • The study created a new, efficient method using DNA biosensors based on carbon nanotubes to detect fetal DNA in maternal blood samples.
  • The biosensors showed significant fluorescence recovery when target DNA was present, demonstrating their potential for accurate and early fetal sex detection with specific limits of detection for each probe used.
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Background: The rising prevalence of familial multiple sclerosis (MS) in Iran has spurred interest in the potential impact of parental consanguinity on the risk of developing the disease. This study aims to aggregate current knowledge on parental consanguinity and its possible effect on MS risk, particularly among familial MS patients from various regions and ethnicities in Iran. The objective is to enhance the understanding of MS genetics and encourage further research in this field.

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Objective: Type 1 diabetes mellitus (T1DM) is an autoimmune disease where immune cells attack insulin-producing beta cells. Islet transplantation is a promising treatment for T1DM. This study aims to evaluate the effects of adipose tissue-derived mesenchymal stem cells (AT-MSCs) in combination with pancreatic islet transplantation using hydrogel.

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Effective treatment of infected bone defects resulting from multi-drug resistant bacteria (MDR) has emerged as a significant clinical challenge, highlighting the pressing demand for potent antibacterial bone graft substitutes. Mesoporous nanoparticles have been introduced as a promising class of biomaterials offering significant properties for treating bone infections. Herein, we synthesize antibacterial mesoporous hydroxyapatite substituted with zinc and gallium (Zn-Ga:mHA) nanoparticles using a facile sol-gel method.

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Tissue engineering as an interdisciplinary field of biomedical sciences has raised many hopes in the treatment of cardiovascular diseases as well as development of three-dimensional (3D) cardiac models. This study aimed to engineer a cardiac microtissue using a natural hybrid hydrogel enriched by granulocyte colony-stimulating factor (G-CSF), a bone marrow-derived growth factor. Cardiac ECM hydrogel (Cardiogel: CG) was mixed with collagen type I (ColI) to form the hybrid hydrogel, which was tested for mechanical and biological properties.

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An artificial ovary based on the alginate (ALG) hydrogel has been widely implemented to preserve prepubertal female fertility. However, this platform is not fully capable of successful an ovary microenvironment simulation for follicle development, holding great potential for its improvement. Therefore, this experimental study aimed to evaluate the effect of an amniotic membrane extract (AME) -loaded hydrogel on the mouse preantral follicles development.

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Oxidative stress hurts the survival of transplanted mesenchymal stem cells (MSCs). Lipopolysaccharide (LPS) preconditioning inhibits apoptotic death in MSCs. Also, Lovastatin's protective effect was reported on MSCs.

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Extracellular vesicles (EVs) are nanosized vesicles with a lipid bilayer that are secreted by cells and play a critical role in cell-to-cell communication. Despite the promising reports regarding their diagnostic and therapeutic potential, the utilization of EVs in the clinical setting is limited due to insufficient information about their cargo and a lack of standardization in isolation and analysis methods. Considering protein cargos in EVs as key contributors to their therapeutic potency, we conducted a tandem mass tag (TMT) quantitative proteomics analysis of three subpopulations of mesenchymal stem cell (MSC)-derived EVs obtained through three different isolation techniques: ultracentrifugation (UC), high-speed centrifugation (HS), and ultracentrifugation on sucrose cushion (SU).

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Hyaluronic acid is composed of repeating sugar units, glucuronic acid and N-acetylglucosamine, which are often associated with increased tumor progression. agglutinin is a potential component that exhibits a high affinity for binding to N-acetylglucosamine. This study aimed to investigate Agglutinin's potential to inhibit the proliferation and migration of prostate cancer cells with high expression of hyaluronic acid through molecular docking and studies.

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Cell culture-derived extracellular vesicles: Considerations for reporting cell culturing parameters.

J Extracell Biol

October 2023

Laboratory of Experimental Clinical Chemistry, Department of Clinical Chemistry, Amsterdam University Medical Centers Location AMC, University of Amsterdam Amsterdam The Netherlands.

Cell culture-conditioned medium (CCM) is a valuable source of extracellular vesicles (EVs) for basic scientific, therapeutic and diagnostic applications. Cell culturing parameters affect the biochemical composition, release and possibly the function of CCM-derived EVs (CCM-EV). The CCM-EV task force of the Rigor and Standardization Subcommittee of the International Society for Extracellular Vesicles aims to identify relevant cell culturing parameters, describe their effects based on current knowledge, recommend reporting parameters and identify outstanding questions.

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Regulation of cell fate by cell imprinting approach in vitro.

Bioimpacts

November 2023

Genetic Department, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, ‎Tehran, Iran.

Cell culture-based technologies are widely utilized in various domains such as drug evaluation, toxicity assessment, vaccine and biopharmaceutical development, reproductive technology, and regenerative medicine. It has been demonstrated that pre-adsorption of extracellular matrix (ECM) proteins including collagen, laminin and fibronectin provide more degrees of support for cell adhesion. The purpose of cell imprinting is to imitate the natural topography of cell membranes by gels or polymers to create a reliable environment for the regulation of cell function.

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Osteochondral organoids: current advances, applications, and upcoming challenges.

Stem Cell Res Ther

June 2024

Department of Stem Cell and Developmental Biology, Cell Science Research Center, Royan Institute for Stem cell Biology and Technology, ACECR, Tehran, Iran.

In the realm of studying joint-related diseases, there is a continuous quest for more accurate and representative models. Recently, regenerative medicine and tissue engineering have seen a growing interest in utilizing organoids as powerful tools for studying complex biological systems in vitro. Organoids, three-dimensional structures replicating the architecture and function of organs, provide a unique platform for investigating disease mechanisms, drug responses, and tissue regeneration.

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Crocin is a carotenoid compound in saffron with anti-cancer properties. However, its therapeutic application is limited by its low absorption, bioavailability, and stability, which can be overcome through nanocarrier delivery systems. This study used surface-modified Nano-crystalline cellulose (NCC) to deliver crocin to cancer cells.

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Epigenetic biomarkers in aging and longevity: Current and future application.

Life Sci

August 2024

Synapse Laboratory Diagnostic Technologies Accelerator, Tehran, Iran; Department of Research & Technology, Zeenome Longevity Research Institute, Tehran, Iran; Department of Immunology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran. Electronic address:

The aging process has been one of the most necessary research fields in the current century, and knowing different theories of aging and the role of different genetic, epigenetic, molecular, and environmental modulating factors in increasing the knowledge of aging mechanisms and developing appropriate diagnostic, therapeutic, and preventive ways would be helpful. One of the most conserved signs of aging is epigenetic changes, including DNA methylation, histone modifications, chromatin remodeling, noncoding RNAs, and extracellular RNAs. Numerous biological processes and hallmarks are vital in aging development, but epigenomic alterations are especially notable because of their importance in gene regulation and cellular identity.

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Association between APOA5 polymorphisms and susceptibility to metabolic syndrome: a systematic review and meta-analysis.

BMC Genomics

June 2024

Yazd Cardiovascular Research Center, Non-Communicable Diseases Research Institute, Shahid Sadoughi University of Medical Sciences, Afshar Hospital, Jomhouri Blvd., Yazd, 8917945556, Iran.

Background: The association between Apolipoprotein A5 (APOA5) genetic polymorphisms and susceptibility to metabolic syndrome (MetS) has been established by many studies, but there have been conflicting results from the literature. We performed a meta-analysis of observational studies to evaluate the association between APOA5 gene polymorphisms and the prevalence of MetS.

Methods: PubMed, Web of Science, Embase, and Scopus were searched up to April 2024.

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The high recurrence rate of hepatocellular carcinoma (HCC) and poor prognosis after medical treatment reflects the necessity to improve the current chemotherapy protocols, particularly drug delivery methods. Development of targeted and efficient drug delivery systems (DDSs), in all active, passive and stimuli-responsive forms for selective delivery of therapeutic drugs to the tumour site has been extended to improve efficacy and reduce the severe side effects. Recent advances in nanotechnology offer promising breakthroughs in the diagnosis, treatment and monitoring of cancer cells.

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P53/NANOG balance; the leading switch between poorly to well differentiated status in liver cancer cells.

Front Oncol

May 2024

Department of Regenerative Medicine, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, Academic Center for Education, Culture and Research (ACECR), Tehran, Iran.

Enforcing a well-differentiated state on cells requires tumor suppressor p53 activation as a key player in apoptosis induction and well differentiation. In addition, recent investigations showed a significant correlation between poorly differentiated status and higher expression of NANOG. Inducing the expression of NANOG and decreasing p53 level switch the status of liver cancer cells from well differentiated to poorly status.

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Gelatin-methacryloyl (GelMA) is a highly adaptable biomaterial extensively utilized in skin regeneration applications. However, it is frequently imperative to enhance its physical and biological qualities by including supplementary substances in its composition. The purpose of this study was to fabricate and characterize a bi-layered GelMA-gelatin scaffold using 3D bioprinting.

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Article Synopsis
  • This study examines how BiS@BSA nanoparticles function as radiosensitizers to enhance the bystander effect in non-irradiated lung cells during radiotherapy.
  • Lung carcinoma cells were irradiated with x-ray photons, and their conditioned medium was tested on human lung fibroblast cells to assess the impact of these nanoparticles.
  • Results showed that at a lower radiation dose (2 Gy), the nanoparticles significantly increased cell death in bystander cells, but this effect diminished at higher doses (8 Gy), suggesting limitations in their use at elevated radiation levels.
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As an advance laboratory model, three-dimensional (3D) organoid culture has recently been recruited to study development, physiology and abnormality of kidney tissue. Micro-tissues derived from primary renal cells are composed of 3D epithelial structures representing the main characteristics of original tissue. In this research, we presented a simple method to isolate mouse renal clonogenic mesenchymal (MLCs) and epithelial-like cells (ELCs).

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