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Topic Review
Mechanisms of Microglia Proliferation in a Rat Model
Although microglia exist as a minor glial cell type in the normal state of the brain, they increase in number in response to various disorders and insults. However, it remains unclear whether microglia proliferate in the affected area, and the mechanism of the proliferation has long attracted the attention of researchers.
  • 370
  • 28 Aug 2023
Topic Review
Image-Based Annotation of Chemogenomic Libraries for Phenotypic Screening
Phenotypical screening is a widely used approach in drug discovery for the identification of small molecules with cellular activities. However, functional annotation of identified hits often poses a challenge. The development of small molecules with narrow or exclusive target selectivity such as chemical probes and chemogenomic (CG) libraries, greatly diminishes this challenge, but non-specific effects caused by compound toxicity or interference with basic cellular functions still pose a problem to associate phenotypic readouts with molecular targets. Hence, each compound should ideally be comprehensively characterized regarding its effects on general cell functions. Here, the researchers report an optimized live-cell multiplexed assay that classifies cells based on nuclear morphology, presenting an excellent indicator for cellular responses such as early apoptosis and necrosis. This basic readout, in combination with the detection of other general cell damaging activities of small molecules such as changes in cytoskeletal morphology, cell cycle and mitochondrial health, provides a comprehensive time-dependent characterization of the effect of small molecules on cellular health in a single experiment. The developed high-content assay offers multi-dimensional comprehensive characterization that can be used to delineate generic effects regarding cell functions and cell viability, allowing an assessment of compound suitability for subsequent detailed phenotypic and mechanistic studies.
  • 369
  • 15 Apr 2022
Topic Review
Major Components of Air Pollution Affecting Skin Appearance
The human skin is exposed daily to different environmental factors such as air pollutants and ultraviolet (UV) light. Air pollution is considered a harmful environmental risk to human skin and is known to promote aging and inflammation of this tissue, leading to the onset of skin disorders and to the appearance of wrinkles and pigmentation issues. Besides this, components of air pollution can interact synergistically with ultraviolet light and increase the impact of damage to the skin. 
  • 369
  • 19 Jul 2022
Topic Review
Vascular Progenitor Cells
Vascular progenitor cells are activated to repair and form a neointima following vascular damage such as hypertension, atherosclerosis, diabetes, trauma, hypoxia, primary cancerous lesions and metastases as well as catheter interventions. They play a key role not only in the resolution of the vascular lesion but also in the adult neovascularization and angiogenesis sprouting (i.e., the growth of new capillaries from pre-existing ones), often associated with carcinogenesis, favoring the formation of metastases, survival and progression of tumors.
  • 370
  • 06 Apr 2023
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.
  • 367
  • 06 Dec 2021
Topic Review
Evolutionary Medicine
Evolutionary medicine is a rapidly developing field. There are two polyploidy-related aspects of it. Firstly, mutations and changes in expression patterns of many ohnologs are associated with various diseases and developmental disorders. Secondly (and probably more important), cancer is now interpreted as an evolutionary phenomenon, and polyploidy often arises in cancer.
  • 367
  • 11 Apr 2022
Topic Review
Regulating and Function of miR-424-5p in Cancers
MiR-424-5p has been widely identified as a tumor suppressor gene that functions in many types of human cancer. It is processed from the 5′ end arm of the miR-424 precursor, is located on human chromosome Xq26.3 and is clustered with miR-15/miR-16. MiR-424 is a member of the miR-16 family.
  • 367
  • 20 Apr 2022
Topic Review
Oxysterols
Oxysterols are cholesterol oxidation products, which can be absorbed from the diet, or generated by auto-oxidation or by enzymatic mechanisms. Oxysterols result from oxidation of cholesterol on the sterol rings, the side chain, or both. This generates a diverse range of oxysterol congeners that have distinct biophysical properties.
  • 366
  • 27 Aug 2021
Topic Review
Testicular Germ-Cell Tumours (TGCT)
Testicular Germ Cell Tumors (TGCTs) are the second most common form of Germ Cell Tumour after benign ovarian teratomas. They are considered a “curable cancer” due to their exceptionally high survival rate of their patients: young caucasian men mostly. A better stratification of those patients would mean an improvement in their quality of life, which is currently diminished by the aggressiveness of prognostic treatments. The knowledge about the relation between TGCTs and the immune system could give keys to improve prognosis, diagnosis and treatment of this cancer.
  • 366
  • 24 May 2022
Topic Review
Co-Operation of Minor Kinases in Controlling Cell Cycle
Cytokinesis, the conclusive act of cell division, allows cytoplasmic organelles and chromosomes to be faithfully partitioned between two daughter cells. In animal organisms, its accurate regulation is a fundamental task for normal development and for preventing aneuploidy. Cytokinesis failures produce genetically unstable tetraploid cells and ultimately result in chromosome instability, a hallmark of cancer cells. In animal cells, the assembly and constriction of an actomyosin ring drive cleavage furrow ingression, resulting in the formation of a cytoplasmic intercellular bridge, which is severed during abscission, the final event of cytokinesis. Kinase-mediated phosphorylation is a crucial process to orchestrate the spatio-temporal regulation of the different stages of cytokinesis.
  • 365
  • 09 Feb 2023
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