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Glycerol-3-phosphate contributes to the increase in FGF23 production in chronic kidney disease.
Am J Physiol Renal Physiol
December 2024
Nephrology Division, Department of Medicine, Massachusetts General Hospital, Boston, MA , USAXXXX, XXX.
Why fibroblast growth factor 23 (FGF23) levels increase markedly in chronic kidney disease (CKD) is unknown. Recently, we found that phosphate stimulates renal production of glycerol-3-phosphate (G-3-P), which circulates to bone to trigger FGF23 production. To assess the impact of G-3-P on FGF23 production in CKD, we compared the effect of adenine-induced CKD in mice deficient in glycerol-3-phosphate dehydrogenase 1 (Gpd1), an enzyme that synthesizes G-3-P, along with wild-type littermates.
View Article and Find Full Text PDFAtTRM11 as a tRNA 2-methylguanosine methyltransferase modulates flowering and bacterial resistance via translational regulation.
Plant Sci
December 2024
College of Plant Science & Technology, Huazhong Agricultural University, Wuhan 430070, Hubei Province. Electronic address:
2-methylguanosine is an eukaryote-specific modified nucleoside in transfer RNAs, and mG10 is catalyzed by Trm11-Trm112 protein complex in eukaryotic tRNAs. Here, we show that loss-of-function mutation of the Arabidopsis Trm11 homolog AtTRM11 resulted in mG deficiency associated with disturbed ribosome assembly and overall transcriptome changes, including genes involved in flowering regulation and plant-pathogen interaction. The attrm11 mutant showed phenotypes of enlarged rosette leaves and early flowering, as well as enhanced resistance to Pseudomonas bacterial infection.
View Article and Find Full Text PDFIdentification of Polycystin 2 Missense Mutants Targeted for Endoplasmic Reticulum-Associated Degradation.
Am J Physiol Cell Physiol
December 2024
Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA, USA.
Autosomal dominant polycystic kidney disease (ADPKD) is a common genetic disorder leading to end-stage renal disease. ADPKD arises from mutations in the and genes, which encode polycystin 1 (PC1) and polycystin 2 (PC2), respectively. PC2 is a non-selective cation channel, and disease-linked mutations disrupt normal cellular processes, including signaling and fluid secretion.
View Article and Find Full Text PDFPositive regulation of a LuxR family protein, MilO, in mildiomycin biosynthesis.
Appl Environ Microbiol
December 2024
State Key Laboratory of Microbial Metabolism, Joint International Research Laboratory of Metabolic & Developmental Sciences, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai, People's Republic of China.
Mildiomycin is a representative peptidyl nucleoside antibiotic and was first isolated from , which has been used as an important biological agent to control powdery mildew in plants. Despite its importance, the biosynthetic pathways and regulatory mechanisms remain to be fully elucidated. In this study, we identified MilO as a positive pathway-specific regulator of mildiomycin biosynthesis in the heterologous host .
View Article and Find Full Text PDFThe Mla pathway promotes re-expansion from stationary phase.
mBio
December 2024
Division of Infectious Diseases, Brigham and Women's Hospital, Boston, Massachusetts, USA.
Unlabelled: Bacteria have evolved diverse strategies to ensure survival under nutrient-limited conditions, where rapid energy generation is not achievable. Here, we performed a transposon insertion site sequencing loss-of-function screen to identify genes that promote pathogen fitness in stationary phase. We discovered that the aintenance of ipid symmetry (Mla) pathway, which is crucial for transferring phospholipids from the outer to the inner membrane, is critical for stationary phase fitness.
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