ArticleThe Journal of biological chemistry2011
Isotopomer profiling of Leishmania mexicana promastigotes reveals important roles for succinate fermentation and aspartate uptake in tricarboxylic acid cycle (TCA) anaplerosis, glutamate synthesis, and growth.
Article in The Journal of biological chemistry, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 57 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
57 citing papers in PubMed, 97 citations in OpenAlex.
- Plasma metabolomic profiling reveals metabolic shifts linked to growth depression in broilers fed high level of valine.Poultry science · 2026Article
- Vitronectin metabolically programs profibrotic macrophages in 3D cultures and idiopathic pulmonary fibrosis.Science advances · 2026Article
- Succinate and lactate produced as conserved biomarkers through chronic and transient substrate-level phosphorylation: from microorganisms to cancer.Journal of bioenergetics and biomembranes · 2026Review
- Endosymbiosis in trypanosomatids: the bacterium regulates the intermediate and oxidative metabolism of the host cell.mSphere · 2025Article
- Dissecting apicoplast functions through continuous cultivation of Toxoplasma gondii devoid of the organelle.Nature communications · 2025Article
- ATM1, an essential conserved transporter in Apicomplexa, bridges mitochondrial and cytosolic [Fe-S] biogenesis.PLoS pathogens · 2024Article
- Evaluation of theACS infectious diseases · 2024Article
- N-acetylglucosamine supplementation fails to bypass the critical acetylation of glucosamine-6-phosphate required for Toxoplasma gondii replication and invasion.PLoS pathogens · 2024Article
- Distribution and Functional Analysis of Isocitrate Dehydrogenases across Kinetoplastids.Genome biology and evolution · 2024Article
- Remodeling of Carbon Metabolism during Sulfoglycolysis in Escherichia coli.Applied and environmental microbiology · 2023Article
- Three types ofFrontiers in cellular and infection microbiology · 2022Article
- Article
- Effects of Visceralising Leishmania on the Spleen, Liver, and Bone Marrow: A Pathophysiological Perspective.Microorganisms · 2021Review
- Non-canonical metabolic pathways in the malaria parasite detected by isotope-tracing metabolomics.Molecular systems biology · 2021Article
- A Nuclear Magnetic Resonance-Based Metabolomic Study to Identify Metabolite Differences between Iranian Isolates ofIranian journal of medical sciences · 2021Article
- Determinants of Innate Immunity in Visceral Leishmaniasis and Their Implication in Vaccine Development.Frontiers in immunology · 2021Review
- Metabolic reprogramming and Notch activity distinguish between non-small cell lung cancer subtypes.British journal of cancer · 2019Article
- Crystal Structures of Fumarate Hydratases from Leishmania major in a Complex with Inhibitor 2-Thiomalate.ACS chemical biology · 2019Article
- Efflux pumps and antimicrobial resistance: Paradoxical components in systems genomics.Progress in biophysics and molecular biology · 2019Review
- Molecular Basis of the Leishmanicidal Activity of the Antidepressant Sertraline as a Drug Repurposing Candidate.Antimicrobial agents and chemotherapy · 2018Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Leishmania parasites proliferate within nutritionally complex niches in their sandfly vector and mammalian hosts. However, the extent to which these parasites utilize different carbon sources remains poorly defined. In this study, we have followed the incorporation of various (13)C-labeled carbon sources into the intracellular and secreted metabolites of Leishmania mexicana promastigotes using gas chromatography-mass spectrometry and (13)C NMR. [U-(13)C]Glucose was rapidly incorporated into intermediates in glycolysis, the pentose phosphate pathway, and the cytoplasmic carbohydrate reserve material, mannogen. Enzymes involved in the upper glycolytic pathway are sequestered within glycosomes, and the ATP and NAD(+) consumed by these reactions were primarily regenerated by the fermentation of phosphoenolpyruvate to succinate (glycosomal succinate fermentation). The initiating enzyme in this pathway, phosphoenolpyruvate carboxykinase, was exclusively localized to the glycosome. Although some of the glycosomal succinate was secreted, most of the C4 dicarboxylic acids generated during succinate fermentation were further catabolized in the TCA cycle. A high rate of TCA cycle anaplerosis was further suggested by measurement of [U-(13)C]aspartate and [U-(13)C]alanine uptake and catabolism. TCA cycle anaplerosis is apparently needed to sustain glutamate production under standard culture conditions. Specifically, inhibition of mitochondrial aconitase with sodium fluoroacetate resulted in the rapid depletion of intracellular glutamate pools and growth arrest. Addition of high concentrations of exogenous glutamate alleviated this growth arrest. These findings suggest that glycosomal and mitochondrial metabolism in Leishmania promastigotes is tightly coupled and that, in contrast to the situation in some other trypanosomatid parasites, the TCA cycle has crucial anabolic functions.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.