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Probing the Metabolic Network in Bloodstream-Form Using Untargeted Metabolomics with Stable Isotope Labelled Glucose
In this work we have followed the distribution of carbon derived from glucose in bloodstream form trypanosomes, the causative agent of African trypanosomiasis, revealing it to enter a diverse range of metabolites. The work involved using 13C-labelled glucose and following the fate of the labelled carbon with an LC-MS based metabolomics platform. Beyond glycolysis and the oxidative branch of the pentose phosphate pathway the label entered lipid biosynthesis both through glycerol 3-phosphate and also acetate. Glucose derived carbon also entered nucleotide synthesis through ribose and pyrimidine synthesis through oxaloacetate-derived aspartate. Appreciable quantities of the carboxylic acids succinate and malate were identified, although labelling patterns indicate they are not TCA cycle derived. Amino sugars and sugar nucleotides were also labelled as was inositol used in protein modification but not in inositol phospholipid headgroup production. We confirm active and essential oxaloacetate production in bloodstream form trypanosomes and show that phosphoenolpyruvate carboxykinase is essential to these parasites using RNA interference. The amount of glucose entering these metabolites is minor compared to the quantity that enters pyruvate excreted from the cell, but the observation that enzymes contributing to the metabolism of glucose beyond glycolysis can be essential offers potential new targets for chemotherapy against trypanosomiasis.
Vyšlo v časopise: Probing the Metabolic Network in Bloodstream-Form Using Untargeted Metabolomics with Stable Isotope Labelled Glucose. PLoS Pathog 11(3): e32767. doi:10.1371/journal.ppat.1004689
Kategorie: Research Article
prolekare.web.journal.doi_sk: https://doi.org/10.1371/journal.ppat.1004689Souhrn
In this work we have followed the distribution of carbon derived from glucose in bloodstream form trypanosomes, the causative agent of African trypanosomiasis, revealing it to enter a diverse range of metabolites. The work involved using 13C-labelled glucose and following the fate of the labelled carbon with an LC-MS based metabolomics platform. Beyond glycolysis and the oxidative branch of the pentose phosphate pathway the label entered lipid biosynthesis both through glycerol 3-phosphate and also acetate. Glucose derived carbon also entered nucleotide synthesis through ribose and pyrimidine synthesis through oxaloacetate-derived aspartate. Appreciable quantities of the carboxylic acids succinate and malate were identified, although labelling patterns indicate they are not TCA cycle derived. Amino sugars and sugar nucleotides were also labelled as was inositol used in protein modification but not in inositol phospholipid headgroup production. We confirm active and essential oxaloacetate production in bloodstream form trypanosomes and show that phosphoenolpyruvate carboxykinase is essential to these parasites using RNA interference. The amount of glucose entering these metabolites is minor compared to the quantity that enters pyruvate excreted from the cell, but the observation that enzymes contributing to the metabolism of glucose beyond glycolysis can be essential offers potential new targets for chemotherapy against trypanosomiasis.
Zdroje
1. Brun R, Blum J, Chappuis F, Burri C (2010) Human African trypanosomiasis. Lancet 375 : 148–159. doi: 10.1016/S0140-6736(09)60829-1 19833383
2. Barrett MP (2010) Potential new drugs for human African trypanosomiasis: some progress at last. Curr Opin Infect Dis 23 : 603–608. doi: 10.1097/QCO.0b013e32833f9fd0 20844428
3. Besteiro S, Barrett MP, Rivière L, Bringaud F (2005) Energy generation in insect stages of Trypanosoma brucei: metabolism in flux. Trends Parasitol 21 : 185–191. 15780841
4. Bringaud F, Rivière L, Coustou V (2006) Energy metabolism of trypanosomatids: adaptation to available carbon sources. Mol Biochem Parasitol 149 : 1–9. 16682088
5. Opperdoes FR, Borst P (1977) Localization of nine glycolytic enzymes in a microbody-like organelle in Trypanosoma brucei: the glycosome. FEBS Lett 80 : 360–364. 142663
6. Bursell E (1963) Aspects of the metabolism of amino acids in the tsetse fly, Glossina (Diptera) J Insect Physiol 9 : 439–452.
7. Lamour N, Rivière L, Coustou V, Coombs GH, Barrett MP, et al. (2005) Proline metabolism in procyclic Trypanosoma brucei is down-regulated in the presence of glucose. J Biol Chem 280 : 11902–11910. 15665328
8. Coustou V, Biran M, Breton M, Guegan F, Rivière L, et al. (2008) Glucose-induced remodeling of intermediary and energy metabolism in procyclic Trypanosoma brucei. J Biol Chem 283 : 16342–16354. doi: 10.1074/jbc.M709592200 18430732
9. Bakker BM, Michels PA, Opperdoes FR, Westerhoff HV (1997) Glycolysis in bloodstream form Trypanosoma brucei can be understood in terms of the kinetics of the glycolytic enzymes. J Biol Chem 272 : 3207–3215. 9013556
10. Haanstra JR, van Tuijl A, van Dam J, van Winden W, Tielens AG, et al. (2012) Proliferating bloodstream-form Trypanosoma brucei use a negligible part of consumed glucose for anabolic processes. Int J Parasitol 42 : 667–673. doi: 10.1016/j.ijpara.2012.04.009 22580731
11. Opperdoes FR, Borst P, Bakker S, Leene W (1977) Localization of glycerol-3-phosphate oxidase in the mitochondrion and particulate NAD+-linked glycerol-3-phosphate dehydrogenase in the microbodies of the bloodstream form to Trypanosoma brucei. Eur J Biochem 76 : 29–39. 142010
12. Ryley JF (1962) Studies on the metabolism of the protozoa. 9. Comparative metabolism of blood-stream and culture forms of Trypanosoma rhodesiense. Biochem J 85 : 211–223. 13983265
13. Grant PT, Fulton JD (1957) The catabolism of glucose by strains of Trypanosoma rhodesiense. Biochem J 66 : 242–250. 13445679
14. Fulton JD, Stevens TS (1945) The glucose metabolism in vitro of Trypanosoma rhodesiense. Biochem J 39 : 317–320. 16747912
15. Rico E, Rojas F, Mony BM, Szoor B, Macgregor P, et al. (2013) Bloodstream form pre-adaptation to the tsetse fly in Trypanosoma brucei. Front Cell Infect Microbiol 3 : 78. doi: 10.3389/fcimb.2013.00078 24294594
16. Brown RC, Evans DA, Vickerman K (1972) Developmental changes in ultrastructure and physiology of Trypanosoma brucei. Trans R Soc Trop Med Hyg 66 : 336–337. 5048840
17. Mackenzie NE, Hall JE, Seed JR, Scott AI (1982) Carbon-13 nuclear-magnetic-resonance studies of glucose catabolism by Trypanosoma brucei gambiense. Eur J Biochem 121 : 657–661. 7056262
18. Hall JE, Mackenzie NE, Mansfield JM, McCloskey DE, Scott AI (1988) 13C-NMR analysis of alanine metabolism by isolated perfused livers from C3HeB/FeJ mice infected with African trypanosomes. Comp Biochem Physiol B 89 : 679–685. 3378406
19. Spitznagel D, Ebikeme C, Biran M, Nic a' Bháird N, Bringaud F, et al. (2009) Alanine aminotransferase of Trypanosoma brucei—a key role in proline metabolism in procyclic life forms. FEBS J 276 : 7187–7199. doi: 10.1111/j.1742-4658.2009.07432.x 19895576
20. Cronín CN, Nolan DP, Voorheis HP (1989) The enzymes of the classical pentose phosphate pathway display differential activities in procyclic and bloodstream forms of Trypanosoma brucei. FEBS Lett 244 : 26–30. 2924907
21. Barrett MP, Le Page RW (1993) A 6-phosphogluconate dehydrogenase gene from Trypanosoma brucei. Mol Biochem Parasitol 57 : 89–99. 8426618
22. Kerkhoven EJ, Achcar F, Alibu VP, Burchmore RJ, Gilbert IH, et al. (2013) Handling uncertainty in dynamic models: the pentose phosphate pathway in Trypanosoma brucei. PLoS Comput Biol 9:e1003371. doi: 10.1371/journal.pcbi.1003371 24339766
23. Turnock DC, Ferguson MA. (2007) Sugar nucleotide pools of Trypanosoma brucei, Trypanosoma cruzi, and Leishmania major. Eukaryot Cell 6 : 1450–1463. 17557881
24. Kuettel S, Wadum MC, Güther ML, Mariño K, Riemer C, et al. (2012) The de novo and salvage pathways of GDP-mannose biosynthesis are both sufficient for the growth of bloodstream-form Trypanosoma brucei. Mol Microbiol 84 : 340–351. doi: 10.1111/j.1365-2958.2012.08026.x 22375793
25. Martin KL, Smith TK (2006) The glycosylphosphatidylinositol (GPI) biosynthetic pathway of bloodstream-form Trypanosoma brucei is dependent on the de novo synthesis of inositol. Mol Microbiol 61 : 89–105. 16824097
26. Gonzalez-Salgado A, Steinmann ME, Greganova E, Rauch M, Mäser P, et al. (2012) myo-Inositol uptake is essential for bulk inositol phospholipid but not glycosylphosphatidylinositol synthesis in Trypanosoma brucei. J Biol Chem 287 : 13313–13323. doi: 10.1074/jbc.M112.344812 22351763
27. Mazet M, Morand P, Biran M, Bouyssou G, Courtois P, et al. (2013) Revisiting the central metabolism of the bloodstream forms of Trypanosoma brucei: production of acetate in the mitochondrion is essential for parasite viability. PLoS Negl Trop Dis 7:e2587. doi: 10.1371/journal.pntd.0002587 24367711
28. van Weelden SW, van Hellemond JJ, Opperdoes FR, Tielens AG (2005) New functions for parts of the Krebs cycle in procyclic Trypanosoma brucei, a cycle not operating as a cycle. J Biol Chem 280 : 12451–12460. 15647263
29. Coustou V, Biran M, Besteiro S, Rivière L, Baltz T, et al.(2006) Fumarate is an essential intermediary metabolite produced by the procyclic Trypanosoma brucei. J Biol Chem 281 : 26832–26846. 16857679
30. Millerioux Y, Morand P, Biran M, Mazet M, Moreau P, et al. (2012) ATP synthesis-coupled and-uncoupled acetate production from acetyl-CoA by mitochondrial acetate:succinate CoA-transferase and acetyl-CoA thioesterase in Trypanosoma. J Biol Chem 287 : 17186–17197. doi: 10.1074/jbc.M112.355404 22474284
31. Rivière L, Moreau P, Allmann S, Hahn M, Biran M, et al. (2009) Acetate produced in the mitochondrion is the essential precursor for lipid biosynthesis in procyclic trypanosomes. Proc Natl Acad Sci U S A 106 : 12694–12699. doi: 10.1073/pnas.0903355106 19625628
32. Creek DJ, Anderson J, McConville MJ, Barrett MP (2012) Metabolomic analysis of trypanosomatid protozoa. Mol Biochem Parasitol 181 : 73–84. doi: 10.1016/j.molbiopara.2011.10.003 22027026
33. Breitling R, Vitkup D, Barrett MP (2008) New surveyor tools for charting microbial metabolic maps. Nat Rev Microbiol 6 : 156–161. 18026122
34. Breitling R, Pitt AR, Barrett MP (2006) Precision mapping of the metabolome. Trends Biotechnol 24 : 543–548. 17064801
35. MacRae JI, Sheiner L, Nahid A, Tonkin C, Striepen B, et al. (2012) Mitochondrial metabolism of glucose and glutamine is required for intracellular growth of Toxoplasma gondii. Cell Host Microbe 12 : 682–692. doi: 10.1016/j.chom.2012.09.013 23159057
36. MacRae JI, Dixon MW, Dearnley MK, Chua HH, Chambers JM, et al. (2013) Mitochondrial metabolism of sexual and asexual blood stages of the malaria parasite Plasmodium falciparum. BMC Biol 11 : 67. doi: 10.1186/1741-7007-11-67 23763941
37. Storm J, Sethia S, Blackburn GJ, Chokkathukalam A, Watson DG, et al. (2014) Phosphoenolpyruvate carboxylase identified as a key enzyme in erythrocytic Plasmodium falciparum carbon metabolism. PLoS Pathog 10:e1003876. doi: 10.1371/journal.ppat.1003876 24453970
38. Creek DJ, Chokkathukalam A, Jankevics A, Burgess KE, Breitling R, et al. (2012) Stable isotope-assisted metabolomics for network-wide metabolic pathway elucidation. Anal Chem 84 : 8442–8447. doi: 10.1021/ac3018795 22946681
39. Chokkathukalam A, Jankevics A, Creek DJ, Achcar F, Barrett MP, Breitling R (2013) mzMatch-ISO: an R tool for the annotation and relative quantification of isotope-labelled mass spectrometry data. Bioinformatics. 29 : 281–283. doi: 10.1093/bioinformatics/bts674 23162054
40. Achcar F, Barrett MP, Breitling R (2013) Explicit consideration of topological and parameter uncertainty gives new insights into a well-established model of glycolysis. FEBS J 280 : 4640–4651. doi: 10.1111/febs.12436 23865459
41. Gualdron-López M, Vapola MH, Miinalainen IJ, Hiltunen JK, Michels PA, Antonenkov VD (2012) Channel-forming activities in the glycosomal fraction from the bloodstream form of Trypanosoma brucei. PLoS One 7:e34530. doi: 10.1371/journal.pone.0034530 22506025
42. Greig N, Wyllie S, Patterson S, Fairlamb AH (2009) A comparative study of methylglyoxal metabolism in trypanosomatids. FEBS J 276 : 376–386. doi: 10.1111/j.1742-4658.2008.06788.x 19076214
43. Montgomery CM, Webb JL (1956) Metabolic studies on heart mitochondria. II. The inhibitory action of parapyruvate on the tricarboxylic acid cycle. J Biol Chem 221 : 359–368. 13345825
44. Stoffel SA, Alibu VP, Hubert J, Ebikeme C, Portais JC et al. (2011) Transketolase in Trypanosoma brucei. Mol Biochem Parasitol 179 : 1–7. doi: 10.1016/j.molbiopara.2011.04.006 21570429
45. Fish WR, Looker DL, Marr JJ, Berens RL (1982) Purine metabolism in the bloodstream forms of Trypanosoma gambiense and Trypanosoma rhodesiense. Biochim Biophys Acta 719 : 223–231. 6817814
46. Creek DJ, Nijagal B, Kim DH, Rojas F, Matthews KR, et al. (2013) Metabolomics guides rational development of a simplified cell culture medium for drug screening against Trypanosoma brucei. Antimicrob Agents Chemother 57 : 2768–2779. doi: 10.1128/AAC.00044-13 23571546
47. Parkin DW (1996) Purine-specific nucleoside N-ribohydrolase from Trypanosoma brucei brucei. Purification, specificity, and kinetic mechanism. J Biol Chem 271 : 21713–21719. 8702965
48. Davies MJ, Ross AM, Gutteridge WE (1983) The enzymes of purine salvage in Trypanosoma cruzi, Trypanosoma brucei and Leishmania mexicana. Parasitology 87 : 211–217. 6316234
49. Vodnala M, Fijolek A, Rofougaran R, Mosimann M, Mäser P, Hofer A (2008) Adenosine kinase mediates high affinity adenosine salvage in Trypanosoma brucei J Biol Chem 283 : 5380–5388. doi: 10.1074/jbc.M705603200 18167353
50. Berger BJ, Dai WW, Wang H, Stark RE, Cerami A (1996) Aromatic amino acid transamination and methionine recycling in trypanosomatids. Proc Natl Acad Sci USA 93 : 4126–4130. 8633027
51. Hasne MP, Barrett MP (2000) Transport of methionine in Trypanosoma brucei brucei. Mol Biochem Parasitol 111 : 299–307. 11163438
52. Durieux PO, Schütz P, Brun R, Köhler P (1991) Alterations in Krebs cycle enzyme activities and carbohydrate catabolism in two strains of Trypanosoma brucei during in vitro differentiation of their bloodstream to procyclic stages. Mol Biochem Parasitol 45 : 19–27. 1904988
53. Hart DT, Misset O, Edwards SW, Opperdoes FR (1984) A comparison of the glycosomes (microbodies) isolated from Trypanosoma brucei bloodstream form and cultured procyclic trypomastigotes. Mol Biochem Parasitol 12 : 25–35. 6749187
54. Hasne, MP (2001) Amino acid transporters in Trypanosoma brucei brucei. University of Glasgow PhD thesis.
55. Aranda A, Maugeri D, Uttaro AD, Opperdoes F, Cazzulo JJ, et al.(2006) The malate dehydrogenase isoforms from Trypanosoma brucei: subcellular localization and differential expression in bloodstream and procyclic forms. Int J Parasitol 36 : 295–307. 16321390
56. Opperdoes FR, Borst P, Spits H (1977) Particle-bound enzymes in the bloodstream form of Trypanosoma brucei. Eur J Biochem 76 : 21–28. 195809
57. Opperdoes FR, Borst P, Bakker S, Leene W (1977) Localization of glycerol-3-phosphate oxidase in the mitochondrion and particulate NAD+-linked glycerol-3-phosphate dehydrogenase in the microbodies of the bloodstream form to Trypanosoma brucei. Eur J Biochem 76 : 29–39. 142010
58. Ali JA, Tagoe DN, Munday JC, Donachie A, Morrison LJ, de Koning HP (2013) Pyrimidine biosynthesis is not an essential function for Trypanosoma brucei bloodstream forms. PLoS One 8:e58034. doi: 10.1371/journal.pone.0058034 23505454
59. Ali JA, Creek DJ, Burgess K, Allison HC, Field MC, et al. (2013) Pyrimidine salvage in Trypanosoma brucei bloodstream forms and the trypanocidal action of halogenated pyrimidines. Mol Pharmacol 83 : 439–453. doi: 10.1124/mol.112.082321 23188714
60. Alsford S, Turner DJ, Obado SO, Sanchez-Flores A, Glover L, et al. (2011) High-throughput phenotyping using parallel sequencing of RNA interference targets in the African trypanosome. Genome Res 21 : 915–924. doi: 10.1101/gr.115089.110 21363968
61. Coustou V, Besteiro S, Biran M, Diolez P, Bouchaud V et al. (2003) ATP generation in the Trypanosoma brucei procyclic form: cytosolic substrate level is essential, but not oxidative phosphorylation. J Biol Chem 278 : 49625–49635. 14506274
62. Bowes AE, Samad AH, Jiang P, Weaver B, Mellors A (1993) The acquisition of lysophosphatidylcholine by African trypanosomes. J Biol Chem 268 : 13885–13892. 8314756
63. Lee SH, Stephens JL, Paul KS, Englund PT (2006) Fatty acid synthesis by elongases in trypanosomes. Cell 126 : 691–699. 16923389
64. Mariño K, Güther ML, Wernimont AK, Amani M, Hui R, et al. (2010) Identification, subcellular localization, biochemical properties, and high-resolution crystal structure of Trypanosoma brucei UDP-glucose pyrophosphorylase. Glycobiology 20 : 1619–1630. doi: 10.1093/glycob/cwq115 20724435
65. Saunders EC, Ng WW, Chambers JM, Ng M, Naderer T, et al. (2011) 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. J Biol Chem 286 : 27706–27717. doi: 10.1074/jbc.M110.213553 21636575
66. Achcar F, Kerkhoven EJ, SilicoTryp Consortium, Bakker BM, Barrett MP, et al.(2012) Dynamic modelling under uncertainty: the case of Trypanosoma brucei energy metabolism. PLoS Comput Biol 8:e1002352. doi: 10.1371/journal.pcbi.1002352 22379410
67. Hannaert V, Saavedra E, Duffieux F, Szikora JP, Rigden DJ et al.(2003) Plant-like traits associated with metabolism of Trypanosoma parasites. Proc Natl Acad Sci USA 100 : 1067–1071. 12552132
68. Jensen BC, Sivam D, Kifer CT, Myler PJ, Parsons M (2009) Widespread variation in transcript abundance within and across developmental stages of Trypanosoma brucei. BMC Genomics 10 : 482. doi: 10.1186/1471-2164-10-482 19840382
69. Gunasekera K, Wüthrich D, Braga-Lagache S, Heller M, Ochsenreiter T (2012) Proteome remodelling during development from blood to insect-form Trypanosoma brucei quantified by SILAC and mass spectrometry. BMC Genomics 13 : 556. doi: 10.1186/1471-2164-13-556 23067041
70. Nett IR, Martin DM, Miranda-Saavedra D, Lamont D, Barber JD, et al. (2009) The phosphoproteome of bloodstream form Trypanosoma brucei, causative agent of African sleeping sickness. Mol Cell Proteomics 8 : 1527–1538. doi: 10.1074/mcp.M800556-MCP200 19346560
71. Millerioux Y, Ebikeme C, Biran M, Morand P, Bouyssou G, et al. (2013) The threonine degradation pathway of the Trypanosoma brucei procyclic form: the main carbon source for lipid biosynthesis is under metabolic control. Mol Microbiol 90 : 114–29. doi: 10.1111/mmi.12351 23899193
72. Verlinde CL, Hannaert V, Blonski C, Willson M, Périé JJ, et al. (2001) Glycolysis as a target for the design of new anti-trypanosome drugs. Drug Resist Updat 4 : 50–65. 11512153
73. Hirumi H, Hirumi K (1989) Continuous cultivation of Trypanosoma brucei blood stream forms in a medium containing a low concentration of serum protein without feeder cell layers. J Parasitol 75 : 985–989. 2614608
74. t’Kindt R, Jankevics A, Scheltema R, Zheng L, Watson DG (2010). Towards an unbiased metabolic profiling of protozoan parasites: optimisation of a Leishmania sampling protocol for HILIC-orbitrap analysis. Anal Bioanal Chem 398 : 2059–2069. doi: 10.1007/s00216-010-4139-0 20824428
75. Tautenhahn R, Bottcher C, Neumann S (2008). Highly sensitive feature detection for high resolution LC/MS. BMC Bioinformatics 9 : 504. doi: 10.1186/1471-2105-9-504 19040729
76. Scheltema RA, Jankevics A, Jansen RC, Swertz MA, Breitling R (2011) PeakML/mzMatch: A File Format, Java Library, R Library, and Tool-Chain for Mass Spectrometry Data Analysis. Anal Chem 83 : 2786–2793. doi: 10.1021/ac2000994 21401061
77. Creek DJ, Jankevics A, Burgess KEV, Breitling R, Barrett MP (2012) IDEOM: An Excel interface for analysis of LC-MS based metabolomics data. Bioinformatics 28 : 1048–1049. doi: 10.1093/bioinformatics/bts069 22308147
78. Creek DJ, Jankevics A, Breitling R, Watson DG, Barrett MP, et al. (2011) Toward Global Metabolomics Analysis with Hydrophilic Interaction Liquid Chromatography—Mass Spectrometry: Improved Metabolite Identification by Retention Time Prediction. Anal Chem 83 : 8703–8710. doi: 10.1021/ac2021823 21928819
79. Akoka S, Barantin L, Trierweiler M (1999) Concentration Measurement by Proton NMR Using the ERETIC Method. Anal Chem 71 : 2554–2557. doi: 10.1021/ac981422i 21662801
80. Harlow E, Lane D (1988) Antibodies. A laboratory manual. Cold Spring Harbor Laboratory Press.
81. Sambrook J, Fritsch EF, Maniatis T (1989) Molecular cloning: a laboratory manual. Cold Spring Harbor Laboratory Press.
82. Denise H, Giroud C, Barrett MP, Baltz T (1999) Affinity chromatography using trypanocidal arsenical drugs identifies a specific interaction between glycerol-3-phosphate dehydrogenase from Trypanosoma brucei and Cymelarsan. Eur J Biochem 259 : 339–346. 9914512
83. Bringaud F, Peyruchaud S, Baltz D, Giroud C, Simpson L, Baltz T (1995) Molecular characterization of the mitochondrial heat shock protein 60 gene from Trypanosoma brucei. Mol Biochem Parasitol 74 : 119–123. 8719252
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