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Topic Review
Corneal Regeneration Using Adipose-Derived Mesenchymal Stem Cells
Adipose-derived stem cells are a subtype of mesenchymal stem cell that offers the important advantage of being easily obtained (in an autologous manner) from low invasive procedures, rendering a high number of multipotent stem cells with the potential to differentiate into several cellular lineages, to show immunomodulatory properties, and to promote tissue regeneration by a paracrine action through the secretion of extracellular vesicles containing trophic factors. This secretome is being investigated as a potential source for a cell-free based regenerative therapy for human tissues, which would significantly reduce the involved costs, risks and law regulations, allowing for a broader application in real clinical practice.
  • 823
  • 02 Sep 2022
Topic Review
Autophagy Modulation in Cholangiocarcinoma
Autophagy is a multistep catabolic process through which misfolded, aggregated or mutated proteins and damaged organelles are internalized in membrane vesicles called autophagosomes and ultimately fused to lysosomes for degradation of sequestered components. The multistep nature of the process offers multiple regulation points prone to be deregulated and cause different human diseases but also offers multiple targetable points for designing therapeutic strategies. Cancer cells have evolved to use autophagy as an adaptive mechanism to survive under extremely stressful conditions within the tumor microenvironment, but also to increase invasiveness and resistance to anticancer drugs such as chemotherapy.
  • 821
  • 22 Sep 2021
Topic Review
Redox Network in Mammalian Cells and Selenium Compouds
Redox balance is important for the homeostasis of normal cells, but also for the proliferation, progression, and survival of cancer cells. Both oxidative and reductive stress can be harmful to cells. In contrast to oxidative stress, reductive stress and the therapeutic opportunities underlying the mechanisms of reductive stress in cancer, as well as how cancer cells respond to reductive stress, have received little attention and are not as well characterized. Therefore, there is recent interest in understanding how selective induction of reductive stress may influence therapeutic treatment and disease progression in cancer. There is also the question of how cancer cells respond to reductive stress. Selenium compounds have been shown to have chemotherapeutic effects against cancer and their anticancer mechanism is thought to be related to the formation of their metabolites, including hydrogen selenide (H2Se), which is a highly reactive and reducing molecule and possible can generate the reductive stress in cells. The research report on the molecular mechanism of how cells recognize and respond to oxidative and reductive stress and selenium compounds with well documented hydrogen selenide release, as compounds possibly useful in study of redox homeostasis by the selective induction of reductive stress in cells and in vivo, as well as possibly their utility in anti-cancer therapy.
  • 821
  • 26 Jun 2023
Topic Review
Sex-Specific Differences to Ischemic Stroke
Macroautophagy (called autophagy thereafter) is a self-catabolic process where subcellular proteins, macromolecules, and organelles are sequestered within membrane-enclosed vesicles (autophagosomes) and are degraded by fusion with lysosomes (autolysosomes). Autophagy plays a role in cellular homeostasis by degrading damaged cellular contents and redistributing the constituents for other cellular processes. During times of cell stress, such as ischemia, autophagy may become dysregulated and increase injury, or conversely may increase the ability of the cell to survive under conditions with low energy substrates. There is increasing evidence that autophagy is a sex-dependent process.
  • 819
  • 04 Aug 2021
Topic Review
Nucleus in Drosophila Oocyte Development
Oogenesis is a developmental process leading to the formation of an oocyte, a haploid gamete, which upon fertilisation and sperm entry allows the male and the female pronuclei to fuse and give rise to a zygote. In addition to forming a haploid gamete, oogenesis builds up a store of proteins, mRNAs, and organelles in the oocyte needed for the development of the future embryo. In several species, such as Drosophila, the polarity axes determinants of the future embryo must be asymmetrically distributed prior to fertilisation. In the Drosophila oocyte, the correct positioning of the nucleus is essential for establishing the dorsoventral polarity axis of the future embryo and allowing the meiotic spindles to be positioned in close vicinity to the unique sperm entry point into the oocyte.
  • 819
  • 19 Feb 2024
Topic Review
Influence of Heat Stress on Chicken Immune System
Heat stress (HS) in poultry husbandry is an important stressor and with increasing global temperatures its importance will increase. The negative effects of stress on the quality and quantity of poultry production are described in a range of research studies.
  • 817
  • 16 Aug 2023
Topic Review
PIM1 Inhibition Affects Glioblastoma Stem Cell Behavior
Despite comprehensive therapy and extensive research, glioblastoma (GBM) still represents the most aggressive brain tumor in adults. Glioma stem cells (GSCs) are thought to play a major role in tumor progression and resistance of GBM cells to radiochemotherapy. The PIM1 kinase has become a focus in cancer research.
  • 816
  • 11 Nov 2021
Topic Review
Early Spliceosomal Complex
Crucial for the definition of the exon–intron junctions is the early spliceosomal complex (E complex), also called commitment complex (CC) in yeast. This minimal complex consists of the U1-snRNP, SF1, and U2AFand is sufficient to recognize all intron definingciselements. Base pairing between the 5′ ss and the 5′-end of U1 snRNA defines the start of the intron.
  • 816
  • 06 Dec 2021
Topic Review
Basophils in Brief
Basophils are a type of white blood cell that play a multifaceted role in the immune system. These enigmatic cells, constituting a mere 0.5% or less of the total white blood cell population, originate in the bone marrow and mature under the influence of various growth factors and cytokines. Traditionally known for their involvement in allergic reactions, basophils are equipped with high-affinity IgE receptors (FcεRI) that bind to allergens. Upon allergen exposure, basophils release histamine and other inflammatory mediators, triggering the hallmark symptoms of allergies. Beyond allergies, basophils are integral in the body's defense against parasitic infections. When they encounter parasitic antigens, they release cytokines like IL-4 and IL-13, promoting a Th2 immune response that helps eliminate parasites. Basophils also have a less explored role as regulators of the immune system, potentially influencing T cell differentiation and acting as antigen-presenting cells (APCs). Additionally, they contribute to tissue repair and wound healing by releasing factors that stimulate angiogenesis and tissue regeneration. In clinical settings, basophils serve as valuable biomarkers for allergic diseases, parasitic infections, and certain hematological disorders. Ongoing research continues to unveil the diverse functions of basophils, highlighting their importance in immunology and beyond.
  • 816
  • 07 Oct 2023
Topic Review
T Lymphocytes in Brief
T lymphocytes, often referred to as T cells, are a crucial component of the immune system. These specialized white blood cells originate in the bone marrow and undergo maturation in the thymus gland. T cells are known for their remarkable specificity in recognizing antigens presented by other cells. This recognition is mediated by the T cell receptor (TCR) on their surface. There are two primary subsets of T lymphocytes: CD4+ T cells (helper T cells) and CD8+ T cells (cytotoxic T cells). Helper T cells assist in coordinating immune responses, while cytotoxic T cells directly target and destroy infected or abnormal cells. T cells also have memory subsets that provide long-term immunity. T lymphocytes play pivotal roles in defending the body against infections, regulating immune responses, and contributing to the immune system's ability to distinguish between self and non-self. Their diverse functions and clinical significance make T cells a subject of extensive research and therapeutic exploration in the field of immunology.
  • 815
  • 08 Oct 2023
Topic Review
Organoids and iPSC-Based Models
Organoids are self-organized, three-dimensional structures derived from stem cells that can mimic the structure and physiology of human organs. Patient-specific induced pluripotent stem cells (iPSCs) and 3D organoid model systems allow cells to be analyzed in a controlled environment to simulate the characteristics of a given disease by modeling the underlying pathophysiology. 
  • 815
  • 26 Jan 2024
Topic Review
Circular RNAs in Metabolism
Circular RNAs (circRNAs) are an emerging group of long non-coding RNAs (lncRNAs) and have attracted attention again according to the progress in high-throughput sequencing in recent years. circRNAs are genome transcripts produced from pre-messenger (m)RNA regions in a specific process called “back-splicing,” which forms covalently closed continuous loops.
  • 814
  • 30 Jan 2022
Topic Review
Cellular Senescence in Metabolic-Associated Kidney Disease
Metabolic syndrome (MetS), a complex of interrelated risk factors for cardiovascular disease and diabetes, is characterized by central obesity (increased waist circumference), hyperglycemia, dyslipidemia (high triglyceride blood levels and low high-density lipoprotein blood levels), and increased blood pressure. As an important metabolic organ, the kidney has a close relationship with metabolic syndrome. MetS usually aggravates kidney damage and causes or aggravates kidney pathologies, typically manifested as microalbuminuria and renal insufficiency. For example, severe obesity can lead to glomerular hypertrophy and glomerular sclerosis, leading to proteinuria. This is called obesity-related nephropathy, which was first discovered in 1974 by Weisinger. Diabetic capillary complications can lead to pathological changes to the kidney, thickening of the glomerular capillary basement membrane, and widening of the mesangium. Clinical manifestations can change from proteinuria to uremia. Similarly, hypertension-related nephropathy is a serious complication of hypertension, which is characterized by arteriosclerotic kidneys. Clinical manifestations include nocturia increasing, albuminuria, and finally, uremia. For hyperlipidemia, although there is no hyperlipidemia-related nephropathy, a large number of studies have shown that lipids have an effect on the proliferation and signal transduction of glomerular cells, and accelerate glomerulosclerosis through inflammatory reaction. These metabolic diseases often exist at the same time, and can promote each other; furthermore, they share a common pathophysiological basis: insulin resistance. It is widely believed that there exists a significant relationship between hyperglycemia, hypertension, and hyperlipemia.
  • 814
  • 18 Nov 2022
Topic Review
Post-Translational Role of UFMylation in Physiology and Disease
Ubiquitin-fold modifier 1 (UFM1) is a newly identified ubiquitin-like protein that has been conserved during the evolution of multicellular organisms. In a similar manner to ubiquitin, UFM1 can become covalently linked to the lysine residue of a substrate via a dedicated enzymatic cascade. Although a limited number of substrates have been identified so far, UFM1 modification (UFMylation) has been demonstrated to play a vital role in a variety of cellular activities, including mammalian development, ribosome biogenesis, the DNA damage response, endoplasmic reticulum stress responses, immune responses, and tumorigenesis.
  • 814
  • 19 Jan 2024
Topic Review
Microtubule Cytoskeleton Organization, Cell Polarity, and Phosphoinositide Signaling
The capacity for cancer cells to metastasize to distant organs depends on their ability to execute the carefully choreographed processes of cell adhesion and migration. As most human cancers are of epithelial origin (carcinoma), the transcriptional downregulation of adherent/tight junction proteins (e.g., E-cadherin, Claudin and Occludin) with the concomitant gain of adhesive and migratory phenotypes has been extensively studied.
  • 814
  • 09 Oct 2023
Topic Review
Nucleobindin-2/Nesfatin-1
Nucleobindin 2 (NUCB2) was first described in 1994 in KM3 acute lymphoblastic leukemia cell line as a DNA binding/EF-hand/acidic-amino acid-rich protein. It has been extensively studied since Oh-I et al. identified nesftain-1 as a NUCB2 cleavage product. Several reports indicate that NUCB2/NESF-1 is also expressed in many organs and tissues (e.g., in the stomach, pancreas, heart, reproductive organs, and adipose tissue).
  • 813
  • 28 Sep 2021
Topic Review
Therapeutic Role of Chromatin Remodeling in Heart Failure
Cardiovascular diseases are a major cause of death globally, with no cure to date. Many interventions have been studied and suggested, of which epigenetics and chromatin remodeling have been the most promising. Major advancements have been made in the field of chromatin remodeling, particularly for the treatment of heart failure, because of innovations in bioinformatics and gene therapy. Specifically, understanding changes to the chromatin architecture have been shown to alter cardiac disease progression via variations in genomic sequencing, targeting cardiac genes, using RNA molecules, and utilizing chromatin remodeler complexes.
  • 813
  • 22 Feb 2023
Topic Review
LncRNAs in Pulmonary Arterial Hypertension
Pulmonary arterial hypertension (PAH) is a debilitating condition of the pulmonary circulatory system that occurs in patients of all ages and if untreated, eventually leads to right heart failure and death.
  • 812
  • 02 Dec 2021
Topic Review
Telomere Length and Male Fertility
Telomeres are evolutionary conserved,  multifunctional  DNA-protein complexes located at the ends of eukaryotic chromosomes. Infertility is the inability of a couple to conceive naturally after one year of regular unprotected sexual intercourse.  Male infertility is a complex multifactorial pathological condition with profoundly different phenotypic presentations. Lifestyle factors, genetics, and telomeres are associated with male infertility. A moderate involvement of telomere length in male infertility and SNPs to be pleiotropic and to be involved in other regulatory mechanisms independent from telomere homeostasis, but involved in the spermatogenic process.
  • 812
  • 18 May 2021
Topic Review
RNF168 in Tumor Progression
RING finger protein 168 (RNF168) is an E3 ubiquitin ligase with the RING finger domain. It is an important protein contributing to the DNA double-strand damage repair pathway. 
  • 811
  • 06 Feb 2023
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