In CTLs: High glucose-culture enhances thapsigargin-induced SOCE but decreases target recognition-induced Ca influx. High glucose-culture regulates expression of ORAIs and STIMs without affecting glucose uptake. More high glucose-cultured CTLs are prone to necrosis after execution of killing.
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http://dx.doi.org/10.1002/eji.202048577 | DOI Listing |
Vet Sci
August 2024
Department of Precision and Regenerative Medicine and Ionian Area (DiMePre-J), Veterinary Clinics and Animal Production Section, University of Bari Aldo Moro, Valenzano, 70010 Bari, Italy.
Cell-based therapy using insulin-producing cells (IPCs) is anticipated as an alternative treatment option to insulin injection or pancreatic islet transplantation for the treatment of diabetes mellitus in both human and veterinary medicine. Several protocols were reported for the differentiation of mesenchymal stem cells (MSCs) into IPCs; to date, glucose-responsive IPCs have only been obtained from canine adipose tissue-derived MSCs (c-MSCs), but not from canine bone marrow-derived MSCs (cBM-MSCs). Therefore, this study aims to generate in vitro glucose-responsive IPCs from cBM-MSCs using two differentiation protocols: a two-step protocol using trichostatin (TSA) and a three-step protocol using mercaptoethanol to induce pancreatic and duodenal homeobox gene 1 (PDX-1) expression.
View Article and Find Full Text PDFInt J Ophthalmol
July 2024
Department of Ophthalmology & Optometry, Fujian Medical University, Fuzhou 350004, Fujian Province, China.
Aim: To examine the regulatory role of microRNA-204 (miR-204) on silent information regulator 1 (SIRT1) and vascular endothelial growth factor (VEGF) under high-glucose-induced metabolic memory in human retinal pigment epithelial (hRPE) cells.
Methods: Cells were cultured with either normal (5 mmol/L) or high D-glucose (25 mmol/L) concentrations for 8d to establish control and high-glucose groups, respectively. To induce metabolic memory, cells were cultured with 25 mmol/L D-glucose for 4d followed by culture with 5 mmol/L D-glucose for 4d.
Biochem Biophys Res Commun
July 2024
Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing, 100005, China. Electronic address:
RYBP (Ring 1 and YY1 binding protein) has been frequently reported to play an important role during body development, stem cell differentiation, apoptosis and tumorigenesis, but whether RYBP carries out additional functions remains mysterious. Here, we demonstrated that RYBP protein levels elevate with increasing glucose concentration in cell culture medium in human tumorigenic cell lines, but an opposite trend was observed in non-tumorigenic cells. Mechanistic exploration disclosed that glucose inhibits polyubiquitination and proteasomal degradation, leading to RYBP stabilization in tumor cells.
View Article and Find Full Text PDFBiochem Genet
April 2024
Department of Endocrinology and Metabolism, Shanghai Jiangong Hospital, No. 666 Zhongshan North 1st Road, Hongkou District, Shanghai, 200083, China.
To investigate the expression level of miR-25-3p in patients with type 2 diabetes mellitus (T2DM) and diabetic nephropathy (DN), and its effect on proliferation, apoptosis and inflammatory response of mesangial cells cultured with high glucose. Blood samples of all clinical subjects were collected for RT-qPCR analysis to detect serum miR-25-3p levels. Human mesangial cells (HMCs) cultured with high glucose were used to construct DN model in vitro.
View Article and Find Full Text PDFArch Microbiol
March 2024
Laboratory of Biotechnology, Dalian Institute of Chemical Physics, CAS, 457 Zhongshan Rd, Dalian, 116023, China.
Rhodosporidium toruloides is a novel cell factory used to synthesis carotenoids, biosurfactants, and biofuel feedstocks. However, research on R. toruloides has generally centred on the manufacture of biochemicals, while analyses of its longevity have received scant attention.
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