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Duck liver LC-MSMS provides insights into trimethylamine metabolism

ABSTRACT: We aim to study the unusual TMA metabolism mechanism of ducks, and further explore the hidden reasons that led to the weakening TMA metabolism ability.To achieve this, transcriptome, proteome, and metagenome analyses were integrated based on the constructed duck populations with high TMA metabolism ability and low TMA metabolism ability.

INSTRUMENT(S): Q Exactive HF

ORGANISM(S): Anas Platyrhynchos

TISSUE(S): Liver

SUBMITTER: Xingzheng Li

LAB HEAD: Jiangxia Zheng

PROVIDER: PXD030109 | Pride | 2023-03-10

REPOSITORIES: Pride

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	181994-01_1.raw	Raw
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Publications

FMO3 deficiency of duck leads to decreased lipid deposition and increased antibacterial activity.

Li Xingzheng X Song Jianlou J Shi Xuefeng X Huang Mingyi M Liu Lei L Yi Guoqiang G Yang Ning N Xu Guiyun G Zheng Jiangxia J

Journal of animal science and biotechnology 20221116 1

<h4>Background</h4>Most duck eggs possess a fishy odor, indicating that ducks generally exhibit impaired trimethylamine (TMA) metabolism. TMA accumulation is responsible for this unpleasant odor, and TMA metabolism plays an essential role in trimethylaminuria (TMAU), also known as fish odor syndrome. In this study, we focused on the unusual TMA metabolism mechanism in ducks, and further explored the unclear reasons leading to the debilitating TMA metabolism.<h4>Methods</h4>To achieve this, trans ...[more]

PMID: 36380386

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RNAseq data of duck liver after feeding choline chloride

Project description:We aim to study the unusual TMA metabolism mechanism of ducks, and further explore the hidden reasons that led to the weakening TMA metabolism ability. To achieve this, transcriptome, proteome, and metagenome analyses were integrated based on the constructed duck populations with high TMA metabolism ability and low TMA metabolism ability. In addition, further experiments were followed to validate the hypothesis on the limited flavin-containing monooxygenase 3 (FMO3) metabolism ability of ducks. The study demonstrated that both cecal microbe, including Akkermansia and Mucispirillum, and liver FMO3 participated in the TMA metabolism process of ducks. The limited oxidation ability of FMO3 explained the weakening TMA metabolism ability of ducks. Nevertheless, it contributed to the duck’s survival and reproduction during the evolutional adaption process.

2021-12-07 | GSE190019 | GEO

Proteome of L-carnitine-grown Eubacterium limosum ATCC 8486

Project description:Eubacterium limosum ATCC 8486 makes acetate and butyrate from various substrates and is found in the human intestine. The proteome of L-carnitine-grown Eubacterium limosum was obtained in order to identify enzymes required for growth on L-carnitine, in particular to identify components that are unique to growth on L-carnitine in comparison to other substrates for acetogenesis, such as lactic acid. L-carnitine and derviatives are converted to trimethylamine (TMA) by certain members of the gut microbiome, metabolism of TMA is now tied to progression of cardiovascular disease. Demethylation of carnitine is observed during growth of Eubacterium limosum on this substrate, and does not produce TMA. Carnitine demethylation by organisms like Eubacterium limosum could lessen TMA production in the gut, thereby lessening the propensity towards atherorsclerosis caused by metabolism of TMA in the body. The carnitine proteome led to the description of a carnitine:tetrahydrofolate methyltransferase system. The key carnitine demethylating enzyme is a member of the widespread TMA methyltransferase protein superfamily.

2020-06-19 | PXD013961 | Pride

The YbjN regulon in Escherichia coli

Project description:YbjN, an enterobacteria-specific protein, is a multicopy suppressor of ts9 temperature sensitivity in Escherichia coli. Microarray study revealed that the expression level of ybjN was inversely correlated with the expression of flagellar, fimbrial and acid resistance genes. Over-expression of ybjN significantly down-regulated genes involved in the citric acid cycle, glycolysis, the glyoxylate shunt, oxidative phosphorylation, and amino acid and nucleotide metabolism. On the other hand, over-expression of ybjN up-regulated toxin-antitoxin modules, the SOS responsive pathway, cold shock proteins and starvation-induced transporter genes. Our results collectively suggest that YbjN may play important roles in regulating bacterial multicellular behaviors, metabolism and survival under various stress conditions in Es. coli. A total of 8 samples were analyzed: E. coli wild type strain (2 replicates); E. coli ybjN mutant strain (3 replicates); E. coli ybjN over-expression strain (3 replicates).

2011-10-14 | E-GEOD-28630 | biostudies-arrayexpress

Identification of candidate genes that specifically regulate subcutaneous and intramuscular fat deposition from transcriptomic and proteomic profiles in Dingyuan pigs

Project description:we collected tissues of subcutaneous fat and longissimus dorsi (LD) muscle from individuals that have divergent of backfat thickness and intramuscular fat content, and have similar age and body weight. The transcriptomic and proteomic data were gained using RNA-Seq and TMT to identify the key genes and pathways that specifically regulate the subcutaneous fat and intramuscular fat deposition in Dingyuan pig.

2022-04-04 | PXD027061 | Pride

Proteome of gamma-butyrobetaine-grown Eubacterium limosum ATCC 8486

Project description:Eubacterium limosum ATCC 8486 makes acetate and butyrate from various substrates and is found in the human intestine. The proteome of gamma-butyrobetaine -grown Eubacterium limosum was obtained in order to identify enzymes required for growth on gamma-butyrobetaine, in particular to identify components that are unique to growth on gamma-butyrobetaine in comparison to other substrates for acetogenesis, such as lactic acid, L-carnitine, or proline betaine. Gamma-butyrobetaine is converted to trimethylamine (TMA) by certain members of the gut microbiome. Subsequent liver metabolism of TMA is now tied to progression of cardiovascular disease. Demethylation of gamma-butyrobetaine is observed during growth of Eubacterium limosum on this substrate, and does not produce TMA. Gamma-butyrobetaine demethylation by organisms like Eubacterium limosum could lessen TMA production in the gut, thereby lessening the propensity towards atherosclerosis caused by metabolism of TMA in the body. This proteome led to discovery of gamma-butyrobetaine:tetrahydrofolate methyltransferase system. The key gamma-butyrobetaine demethylating enzyme is a member of the widespread TMA methyltransferase protein superfamily.

2021-11-04 | PXD020152 | Pride

pH stress in Desulfovibrio vulgaris Hildenborough

Project description:Using data from microarray experiments, we investigated the effects of excess NaCl on D. vulgaris. Keywords: stress response, time course Comparison of cells treated with pH10 pH to untreated cells at times of 0,120,240,30,60 min.

2007-08-31 | E-GEOD-8197 | biostudies-arrayexpress

B. thailandensis genes induced by subinhibitory concentration of glyphosate

Project description:Total transcript amplification (TTA) from single eukaryotic cells for transcriptome analysis is established, but TTA from a single prokaryotic cell presents additional challenges with much less starting material and lack of poly(A)-tails. We described, here, a novel method for single bacterium TTA, using a Burkholderia thailandensis model exposed to subinhibitory concentration of the antibacterial agent, glyphosate. Utilizing B. thialandensis microarray to assess the TTA method showed little gene bias (< 2 fold-change) and absence (~5-6%) when compared to the larger scale non-amplified RNA samples. B. thailandensis genes important to possibly recuperate and balance the intracellular amino acid pool were induced (or repressed) by the aromatic amino acid biosynthesis inhibitor, glyphosate. We validated our single-cell microarray data at the multi-cells and single-cell levels with lacZ and gfp reporter-gene fusions, respectively. This novel method will rejuvenate and expand the prokaryotic transcriptomic field. Two identical cultures of B. thailandensis wildtype strain E264 were grown in 1x M9 minimal medium supplemented with 1% Brij-58 and 20 mM glucose (MG) to mid-log phase. One culture was induced by final concentration of 0.01% (w/v) glyphosate for 30 minutes. Total RNA was then purified from B. thailandensis uninduced and induced samples, converted to cDNA and hybridized onto B. thailandensis 70mer triplicate array

2010-08-05 | E-GEOD-23419 | biostudies-arrayexpress

mRNA expression changes in chicken livers associated with field exposure to DDTs in KwaZulu-Natal, South Africa

Project description:Free-range chickens were sampled from homesteads in South Africa where DDT is sprayed for malaria control. The purpose was to detect potential effects associated with contamination. Livers were sampled post-mortem & analysed for DDTs (DDT and metabolites) contamination. Samples from two birds were further processed by microarray analysis – one with a relatively low (1,116.0 ng/g wet weight; sample SA1) and one with a relatively high (1,938.0 ng/g wet weight; sample SA2) level of contamination by DDTs.

2018-10-16 | E-MTAB-7130 | biostudies-arrayexpress

Elucidation of an anaerobic pathway for metabolism of L-carnitine-derived γ-butyrobetaine to trimethylamine in human gut bacteria

Project description:Trimethylamine (TMA) is an important gut microbial metabolite strongly associated with human disease. There are prominent gaps in our understanding of how TMA is produced from the essential dietary nutrient L-carnitine, particularly in the anoxic environment of the human gut where oxygen-dependent L-carnitine-metabolizing enzymes are likely inactive. Here, we elucidate the chemical and genetic basis for anaerobic TMA generation from the L-carnitine-derived metabolite γ-butyrobetaine (γbb) by the human gut bacterium Emergencia timonensis. We identify a set of genes upregulated by γbb and demonstrate that the enzymes encoded by the induced γbb utilization (bbu) gene cluster convert γbb to TMA. The key TMA-generating step is catalyzed by a previously unknown type of TMA-lyase enzyme that utilizes a flavin cofactor to catalyze a redox neutral transformation. We identify additional cultured and uncultured host-associated bacteria that possess the bbu gene cluster, providing insights into the distribution of anaerobic γbb metabolism. Lastly, we present genetic, transcriptional, and metabolomic evidence that confirms the relevance of this metabolic pathway in the human gut microbiota. These analyses indicate that the anaerobic pathway is a more substantial contributor to TMA generation from L-carnitine in the human gut than the previously proposed aerobic pathway. The discovery and characterization of the bbu pathway provides the critical missing link in anaerobic metabolism of L-carnitine to TMA, enabling investigation into the connection between this microbial function and human disease.

2021-02-03 | GSE165976 | GEO

RNA-seq of combinatory treatment of gemcitabine+UVI5008 and gemcitabine+MS275 in human pancreatic adenocarcinoma human cell lines

Project description:Epigenetic modifications could drive some of the molecular events implicated in proliferation, drug resistance and metastasis of pancreatic ductal adenocarcinoma (PDAC). Thus, epigenetic enzyme inhibitors could be the key to revert those events and transform PDAC into a drug-sensitive tumor.We have performed a systematic study with two different epigenetic enzyme inhibitors (UVI5008, MS275) targeting either Histone Deacetylase 17 (HDAC) 1 or 1/4, DNA methyltransferase 3a (DNMT3a), Euchromatic histone lysine methyltrans- 18 ferase 2 (EHMT2) or Sirtuin 1 (SIRT1), and one drug that restores the p53 function (P53R3), in three 19 different human PDAC cell lines (MIA PaCa-2 and BxPC-3). The synergistic effect of these antitumoral drugs with gemcitabine was tested and the most efficient combinations were characterized by RNA-seq. The combination of UVI5008 or MS275 with gemcitabine induced a synergistic effect at low concentration and the RNA-Seq analysis revealed some synergy candidate genes as potential biomarkers.

2022-07-01 | E-MTAB-11922 | biostudies-arrayexpress

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