The effects of serotonin by Tph1 and Htr2b on skeletal muscle
Ontology highlight
ABSTRACT:
ORGANISM(S): Mus musculus
PROVIDER: GSE275857 | GEO | 2024/08/29
REPOSITORIES: GEO
Similar Datasets
Project description:Reducing circulating serotonin by inhibition of Tph1 increases the sensitivity of BAT cells and this drives thermogenesis by fat and glucose oxidation. Here we report Insulin sensitivity changes by regulating Serotonin on skeletal muscle. Improved glucose tolerance and insulin sensitivity in HFD Tph1 KO mice. Inhibiting Tph1 increases AMPK activity, glucose uptake, myofiber size and decreases lipid droplet accumulation in HFD mice skeletal muscle. Inhibiting Tph1 in muscle showed activation of SIRT1/LKB1/AMPK pathway in skeletal muscle cells and increased p-ACC. Theses results indicates that protected insulin resistance and myosteatosis on skeletal muscle by lack of Serotonin by Tph1 on skeletal muscle.
2024-10-17 | GSE279210 | GEO
Project description:During pregnancy, the energy requirements of the fetus impose changes in maternal metabolism. Increasing insulin resistance in the mother maintains nutrient flow to the growing fetus, while prolactin and placental lactogen counterbalance this resistance and prevent maternal hyperglycemia by driving expansion of the maternal population of insulin-producing beta-cells. However, the exact mechanisms by which the lactogenic hormones drive beta-cell expansion remain uncertain. Here we show that serotonin acts downstream of lactogen signaling to drive beta-cell proliferation. Serotonin synthetic enzyme Tph1 and serotonin production increased sharply in beta-cells during pregnancy or after treatment with lactogens in vitro. Inhibition of serotonin synthesis by dietary tryptophan restriction or Tph inhibition blocked beta-cell expansion and induced glucose intolerance in pregnant mice without affecting insulin sensitivity. Expression of the Gq-linked serotonin receptor Htr2b in maternal islets increased during pregnancy and normalized just prior to parturition, while expression of the Gi-linked receptor Htr1d increased at the end of pregnancy and postpartum. Blocking Htr2b signaling in pregnant mice also blocked beta-cell expansion and caused glucose intolerance. These studies reveal an integrated signaling pathway linking beta-cell mass to anticipated insulin need during pregnancy. Modulators of this pathway, including medications and diet, may affect the risk of gestational diabetes. Analysis of poly(A)+ RNA from 3 biological replicates of pancreatic islets isolated from normal female and pregnant female mice
2010-07-01 | E-GEOD-21860 | biostudies-arrayexpress
Project description:The effects of serotonin by Tph1 and Htr2b on skeletal muscle
| PRJNA1153381 | ENA
Project description:During pregnancy, the energy requirements of the fetus impose changes in maternal metabolism. Increasing insulin resistance in the mother maintains nutrient flow to the growing fetus, while prolactin and placental lactogen counterbalance this resistance and prevent maternal hyperglycemia by driving expansion of the maternal population of insulin-producing beta-cells. However, the exact mechanisms by which the lactogenic hormones drive beta-cell expansion remain uncertain. Here we show that serotonin acts downstream of lactogen signaling to drive beta-cell proliferation. Serotonin synthetic enzyme Tph1 and serotonin production increased sharply in beta-cells during pregnancy or after treatment with lactogens in vitro. Inhibition of serotonin synthesis by dietary tryptophan restriction or Tph inhibition blocked beta-cell expansion and induced glucose intolerance in pregnant mice without affecting insulin sensitivity. Expression of the Gq-linked serotonin receptor Htr2b in maternal islets increased during pregnancy and normalized just prior to parturition, while expression of the Gi-linked receptor Htr1d increased at the end of pregnancy and postpartum. Blocking Htr2b signaling in pregnant mice also blocked beta-cell expansion and caused glucose intolerance. These studies reveal an integrated signaling pathway linking beta-cell mass to anticipated insulin need during pregnancy. Modulators of this pathway, including medications and diet, may affect the risk of gestational diabetes.
2010-07-02 | GSE21860 | GEO
Project description:In the present study, we explored whether skeletal muscle cystathionine γ-lyase (CTH) contributes to high-fat diet (HFD)-induced metabolic disorders using skeletal muscle Cth knockout (CthΔskm) mice. Metabolomics coupled with transcriptome showed that CthΔskm mice displayed impaired energy metabolism and some signaling pathways linked to insulin resistance (IR) in skeletal muscle although the mice had normal insulin sensitivity. HFD led to reduced CTH expression and impaired energy metabolism in skeletal muscle in Cth-floxed mice (Cthf/f) mice. CTH deficiency and HFD had some common pathways enriched in the aspects of amino acid metabolism, carbon metabolism, and fatty acid metabolism. CthΔskm+HFD mice exhibited increased body weight gain, fasting blood glucose, plasma insulin, and IR, and reduced glucose transporter 4 and CD36 expression in skeletal muscle compared to Cthf/f+HFD mice. Impaired mitochondria and irregular arrangement in myofilament occurred in CthΔskm+HFD mice. Omics analysis showed differential pathways enriched between CthΔskm mice and Cthf/f mice upon HFD. More severity in impaired energy metabolism, reduced AMPK signaling, and increased oxidative stress and ferroptosis occurred in CthΔskm+HFD mice compared to Cthf/f+HFD mice. Our data indicate that skeletal muscle CTH expression dysregulation contributes to metabolism disorders upon HFD.
2024-05-11 | GSE254704 | GEO
Project description:Serotonin is important material in our body. 5-HT is synthesized by TPH1 starting with tryptophan and this compound exists on colorectal cancer. And serotonin combines with various receptors to conduct the metabolic pathway in colorectal cancer. Each receptor relates with various metabolism, such as lipid metabolism, growth, immunity, etc. In this way, medicine which inhibits these receptors can expect for therapy of colorectal cancer. Especially HTR 2B has correlation with growth factor and using the inhibitor of HTR2B, SB204741, can have effect on metabolic pathway in colorectal cancer. So, we set the hypothesis that HTR2B antagonist can have negative effect on growth of colorectal cancer.
2024-03-12 | GSE260979 | GEO
Project description:The effects of serotonin by Tph1 on skeletal muscle
| PRJNA1171392 | ENA
Project description:The accumulation of intramyocellular lipid (IMCL) is recognized as an important determinant of insulin resistance, and is increased by a high-fat diet (HFD). However, the effects of HFD on IMCL and insulin sensitivity are highly variable. We used microarrays to detail to identify the genes in skeletal muscle that are related to inter-individual variation of the effects with HFD on the accumulation of intramyocellular lipid and insulin sensitivity. In order to identify the gene expression profile related with inter-individual variation of the effects with high fat diet on the accumulation of intramyocellular lipid and insulin sensitivity, we classified subjects who showed a large increase in intramyocellular lipid and a large decrease in glucose infusion rate by high fat diet as the high-responder (HR), and the subjects who showed a small increase in intramyocellular lipid and a small decrease in glucose infusion rate were classified as the low-responder (LR). In 5 subjects in each group, skeletal muscle sample selected at before (pre) and after (post) 3days high fat diet for RNA extraction and hybridization on Affymetrix microarrays.
2015-05-01 | E-GEOD-68231 | biostudies-arrayexpress
Project description:Individuals with hepatic steatosis often display several metabolic abnormalities including insulin resistance and muscle atrophy. Previously, we found that hepatic steatosis results in an altered hepatokine secretion profile, thereby inducing skeletal muscle insulin resistance via inter-organ crosstalk. In this study, we aimed to investigate whether the altered secretion profile in the state of hepatic steatosis also induces skeletal muscle atrophy via effects on muscle protein turnover. To investigate this, eight-week-old male C57BL/6J mice were fed a chow (4.5% fat) or a high-fat diet (HFD; 45% fat) for 12 weeks to induce hepatic steatosis, after which the livers were excised and cut into ~200 µm slices. Slices were cultured to collect secretion products (conditioned medium; CM). Differentiated L6-GLUT4myc myotubes were incubated with chow or HFD CM to measure glucose uptake. Differentiated C2C12 myotubes were incubated with chow or HFD CM to measure protein synthesis and breakdown, and gene expression via RNA sequencing. Furthermore, proteomics analysis was performed in chow and HFD CM. It was found that HFD CM caused insulin resistance in L6-GLUT4myc myotubes compared with chow CM, as indicated by a blunted insulin-stimulated increase in glucose uptake. Furthermore, protein breakdown was increased in C2C12 cells incubated with HFD CM, while there was no effect on protein synthesis. RNA profiling of C2C12 cells indicated that 197 genes were differentially expressed after incubation with HFD CM, compared with chow CM, and pathway analysis showed that pathways related to anatomical structure and function were enriched. Proteomic analysis of the CM showed that 32 proteins were differentially expressed in HFD CM compared with chow CM. Pathway enrichment analysis indicated that these proteins had important functions with respect to insulin-like Growth Factor transport and uptake, and affect post-translational processes, including protein folding, protein secretion and protein phosphorylation. In conclusion, the results of this study support the hypothesis that secretion products from the liver contribute to the development of muscle atrophy in individuals with hepatic steatosis.
2022-02-17 | PXD027332 | Pride
Project description:The popularity of high fat foods in modern society has been associated with epidemic of various metabolic diseases characterized by insulin resistance, the pathology of which involves complex interactions between multiple tissues such as liver, skeletal muscle and white adipose tissue (WAT). To uncover the mechanism by which excessive fat impairs insulin sensitivity, we conducted a multi- tissue study by using TMT-based quantitative proteomics. 3-week-old ICR mice were fed with high fat diet (HFD) for 19 weeks to induce insulin resistance. Liver, skeletal muscle and epididymal fat were collected for proteomics screening. Additionally, PRM was used for validating adipose differential proteins. By comparing tissue-specific protein profiles of HFD mice, multi-tissue regulation of glucose and lipid homeostasis and corresponding underlying mechanisms was systematically investigated and characterized.
2022-04-04 | PXD021019 | Pride