7 results about "Calcium signaling" patented technology

This application relates to the field of plant genetic engineering technology, specifically disclosing the application of a sterol synthesis-related gene in the response regulation of plant salt tolerance. This application clarifies the sterol synthesis-related gene. SMT2 This study expands our understanding of the role of sterol biosynthesis in plant stress response by revealing the function of calcium signaling under salt stress; it also unveils a novel mechanism by which sterol-membrane lipid interactions regulate calcium signaling, providing a new perspective for research on plant salt stress signal transduction; furthermore, this application provides new salt tolerance gene resources. SMT2 Genes can be used for molecular breeding of salt-tolerant crops, to breed salt-tolerant crop varieties, or to develop salt-tolerant molecular markers.

This invention belongs to the field of biomedical technology, specifically relating to an anti-tumor nanomaterial, its preparation method, and its application. The anti-tumor nanomaterial is formed by in-situ growth of calcium peroxide on the surface of black phosphorus nanosheets to create hierarchical black phosphorus-calcium peroxide nanosheets, followed by coating the surface of these composite nanosheets with hyaluronic acid. After entering tumor cells, the anti-tumor nanomaterial releases calcium ions and hydrogen peroxide, triggering an abnormal increase in calcium ions and oxidative stress within the cells, thereby causing mitochondrial dysfunction and inducing tumor cell death. Simultaneously, the released calcium ions combine with phosphate ions produced by the degradation of black phosphorus, forming calcium phosphate mineralization deposits within the tumor tissue, inducing tumor biocalcification. Changes in calcium signaling and the oxidative stress process can also promote the infiltration and activation of immune cells, thereby regulating the tumor immune microenvironment and achieving a synergistic effect of cell killing, biocalcification induction, and immune regulation within tumor tissue.

The application provides a skeletal muscle organoid and a preparation method thereof, takes muscle stem cells, neural stem cells and fibroblasts as primary cells for organoid culture, restores the microenvironment of skeletal muscle as much as possible, and improves the differentiation degree of the organoid; further, the mold and frame for constructing the organoid are improved, the batch production of the organoid is realized through the array design of the PDMS mold and the polyamide frame; finally, the calcium signal video of the organoid is analyzed by using the Organblink system independently developed by the application, and the accuracy of the function evaluation result of the organoid is improved. The method provided by the application realizes the high bionics and high batch production of the skeletal muscle organoid, has low cost, and greatly promotes the development of the medical research field.

The present invention is directed to novel modulators of the Ca2+-signaling cascade, acting as potentiators of the P2RY2 purinergic receptor and of the inositol triphosphate receptors, ITPRs. The compounds are useful in the treatment of diseases and conditions in which modulation of Ca2+-signaling plays a role, such as in some forms of spinocerebellar ataxia, and in diseases and conditions benefiting from mucosal hydration, as for example respiratory diseases and conditions, dry eye, xerostomia.

This invention discloses a functional analysis system for skeletal muscle organoids and its applications. The core of the system lies in its use of computer vision technology to automatically analyze motion videos of calcium-ion fluorescently labeled skeletal muscle organoids under stimulation. The system automatically identifies organoid regions of interest (ROIs) through specific image processing algorithms (such as adaptive threshold fusion and contour detection), extracts time-series data of calcium signal intensity, and calculates characteristic parameters such as relative fluorescence change rate and peak frequency, ultimately outputting a quantitative functional assessment report. This assessment scheme is low-cost, high-throughput, objective, and accurate, overcoming the technical bottleneck of existing organoid functional assessments that rely on subjective manual analysis or expensive specialized equipment. It is compatible with various culture systems, greatly promoting the large-scale application of skeletal muscle organoids in drug screening and toxicity testing.

This invention relates to the field of microbial mineralization technology, providing a method for rapidly determining whether bacteria can form a calcium carbonate protective layer on a steel surface. The method includes the following steps: S1, immersing at least two steel substrates in a test bacterial solution containing the bacteria to be tested, and incubating for 3 days; S2, detecting the calcium signal intensity on the substrate surface: taking at least one steel substrate and sequentially performing TPEN immersion treatment, calcium ion fluorescent probe immersion treatment, and room temperature incubation in the dark, then detecting the fluorescence signal intensity on the steel substrate surface; S3, detecting bacterial adhesion: taking at least one steel substrate and performing cleaning, crystal violet staining, cleaning, and immersion in anhydrous ethanol, then detecting the absorbance value of the anhydrous ethanol; S4, determining the ability of the test bacteria to form a calcium carbonate protective layer on the steel surface based on the fluorescence signal intensity and absorbance value. Compared to existing technologies, this invention, through the combined detection of "calcium signal at the steel substrate interface + bacterial adhesion," shortens the detection cycle by more than 57%.

This invention discloses a rapid method for detecting calcium signals in undifferentiated and differentiated spermatogonia. The method uses a mild enzymatic digestion method to prepare a testicular single-cell suspension. Indo-1 AM, Thy-APC, and c-kit-PE are used for staining and labeling. The cell population to be analyzed is determined based on the difference between the lateral and forward scattering areas of the cells in the testicular cell sample. Then, Thy-APC and c-kit-PE are used to label undifferentiated and differentiated spermatogonia, respectively, to further select specific cell groups. Finally, the fluorescence intensity changes of indo-1 AM in each specific cell subpopulation are detected, thereby obtaining the changes in calcium ion concentration in undifferentiated, undifferentiated-to-differentiated, and differentiated spermatogonia. This method can rapidly analyze the calcium ion concentration in undifferentiated, undifferentiated-to-differentiated, and differentiated spermatogonia. The method is simple and convenient, and provides a foundation for identifying spermatogonial dysfunction caused by calcium signal imbalance.