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Splenic fibroblasts control marginal zone B cell movement and function via two distinct Notch2-dependent regulatory programs.
Immunity
December 2024
Division of Hematology/Oncology, Department of Medicine, University of Pennsylvania, Philadelphia, PA, USA; Immunology Graduate Group, University of Pennsylvania, Philadelphia, PA, USA; Division of Hematologic Malignancies, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA; Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA. Electronic address:
Innate-like splenic marginal zone (MZ) B (MZB) cells play unique roles in immunity due to their rapid responsiveness to blood-borne microbes. How MZB cells integrate cell-extrinsic and -intrinsic processes to achieve accelerated responsiveness is unclear. We found that Delta-like1 (Dll1) Notch ligands in splenic fibroblasts regulated MZB cell pool size, migration, and function.
View Article and Find Full Text PDFSALL4 mediates SHP2 inhibition in myocardial fibroblasts through the DOT1L/H3K79me2 signaling pathway to promote the progression of myocardial infarction.
Sci Rep
December 2024
Clinical Laboratory, Hebei General Hospital, Shijiazhuang, Hebei, China.
Objective: To explore the influence of SALL4 in cardiac fibroblasts on the progression of myocardial infarction.
Methods: Analysis of genes specifically expressed in myocardial infarction by bioinformatics methods; The impact of SALL4 on myocardial infarction was assessed using mouse ultrasound experiments and Masson staining; The effect of SALL4 on the expression levels of collagen-I and collagen-III in myocardial tissue was examined by immunohistochemical staining; The migration ability of cardiac fibroblasts was evaluated using a Transwell assay; The proliferative ability of cardiac fibroblasts was tested using a CCK-8 assay; The relative fluorescence intensity of α-SMA and CTGF in cardiac fibroblasts were checked through immunofluorescence staining experiment; The expression of SALL4, DOT1L, H3K79me2, P53, SHP2, YAP, nucleus-YAP, collagen-I, α-SMA, CTGF, and PAI-1 in myocardial tissues or cardiac fibroblasts was detected using western blot analysis.
Results: SALL4-specific high expression in myocardial infarction; SALL4 intensified the alterations in the heart structure of mice with myocardial infarction and worsened the fibrosis of myocardial infarction; SALL4 also promoted the expression of SALL4, DOT1L, H3K79me2, P53, SHP2, YAP, nucleus-YAP, collagen-I, collagen-III, α-SMA, CTGF, and PAI-1 in myocardial infarction tissues and cardiac fibroblasts; Subsequently, SALL4 could enhance the immunofluorescence intensity of α-SMA and CTGF; Moreover, SALL4 could promote the proliferation and migration of cardiac fibroblasts.
Inhibition of pterygium cell fibrosis by the Rho kinase inhibitor.
Sci Rep
December 2024
Eugene and Marilyn Glick Eye Institute, Indiana University School of Medicine, RM305v, 1160 W. Michigan St., Indianapolis, IN, 46202, USA.
Pterygium is an ocular disease in which the conjunctival tissue invades the cornea. When the pterygium tissue reaches the pupillary region, the visual function of the patient is affected. Currently, surgical removal is the only effective treatment.
View Article and Find Full Text PDFBolanthus turcicus: a promising antidiabetic with in-vitro antioxidant, enzyme inhibitory and antiadipogenic activities.
J Mol Histol
December 2024
Complementary and Integrative Medicine, Department of Traditional, Ankara Yıldırım Beyazıt University, Ankara, Türkiye, Turkey.
It is crucial to investigate new anti-diabetic agents and therapeutic approaches targeting molecules in potential signaling pathways for the treatment of Type 2 diabetes mellitus (T2DM). The objective of the study was to investigate the total phenolic content, antioxidant capacity, α-glucosidase, and α-amylase inhibitory activities of Bolanthus turcicus (B. turcicus), as well as their cytotoxic, anti-adipogenic, anti-diabetic, apoptotic, and anti-migration potential on adipocytes.
View Article and Find Full Text PDFFibroblast Growth Factor 8 enhances the chondrogenesis of trunk neural crest cells: a possible gene regulatory network.
Int J Dev Biol
December 2024
Laboratory of Plasticity and Differentiation of Neural Crest Cells, Federal University of Santa Catarina, Florianopolis, Santa Catarina, Brazil.
The neural crest (NC) is an embryonic cell population with high migratory capacity. It contributes to forming several organs and tissues, such as the craniofacial skeleton and the peripheral nervous system of vertebrates. Both pre-migratory and post-migratory NC cells are plastic, adopting multiple differentiation paths by responding to different inductive environmental signals.
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