Abstract
The effects of media concentrations of glucose andglutamine on the intracellular nucleotide pools andoxygen uptake rates of a murine antibody-secretinghybridoma cell line were investigated. Cells takenfrom mid-exponential phase of growth were incubated inmedium containing varying concentrations of glucose(0–25 mM) and glutamine (0–9 mM). The intracellularconcentrations of ATP, GTP, UTP and CTP, and theadenylate energy charge increased concomitantly withthe medium glucose concentration. The total adenylatenucleotide concentration did not change over a glucose concentration range of 1–25 mM but therelative levels of AMP, ADP and ATP changed as theenergy charge increased from 0.36 to 0.96. Themaximum oxygen uptake rate (OUR) was obtained in thepresence of 0.1–1 mM glucose. However at glucoseconcentrations >1 mM the OUR decreased suggestinga lower level of aerobic metabolism as a result of theCrabtree effect.A low concentration of glutamine (0.5 mM) caused asignificant increase (45–128%) in the ATP, GTP,CTP, UTP, UDP-GNac, and NAD pools and a doubling ofthe OUR compared to glutamine-free cultures. Theminimal concentration of glutamine also caused anincrease in the total adenylate pool indicating thatthe amino acid may stimulate thede novosynthesis of nucleotides. However, all nucleotidepools and the OUR remained unchanged within the rangeof 0.5–9 mM glutamine.Glucose was shown to be the major substrate forenergy metabolism. It was estimated that in thepresence of high concentrations of glucose (10–25 mM),glutamine provided the energy for the maintenance ofup to 28% of the intracellular ATP pool, whereas theremainder was provided by glucose metabolism.
Keywords: glucose, glutamine, hybridoma, nucleotides oxygen
Full Text
The Full Text of this article is available as a PDF (203.5 KB).
Footnotes
(Author for correspondence; E-mail:
References
- Ardawi MSM, Newsholme EA. Glutamine metabolism in lymphocytes of the rat. Biochem J. 1983;212:835–842. doi: 10.1042/bj2120835. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Atkinson DE. Cellular Energy Metabolism and its Regulation. New York: Academic Press; 1977. pp. 85–107. [Google Scholar]
- Barnabé N, Butler M. Effect of temperature on nucleotide pools and monoclonal antibody production in a mouse hybridoma. Biotechnol Bioeng. 1994;44:1235–1245. doi: 10.1002/bit.260441011. [DOI] [PubMed] [Google Scholar]
- Barnabé N, Butler M. The relationship between intracellular UDP-N-acetyl hexosamine nucleotide pool and monoclonal antibody production in a mouse hybridoma. J Biotechnol. 1998;60:67–80. doi: 10.1016/s0168-1656(97)00188-0. [DOI] [PubMed] [Google Scholar]
- Butler M, Jenkins HA. Nutritional aspects of the growth of animal cells in culture. J Biotechnol. 1989;12:97–110. [Google Scholar]
- Christie A, Butler M. The adaptation of BHK cells to a non-ammoniagenic glutamate-based culture medium. Biotechnol Bioeng. 1999;64:298–309. [PubMed] [Google Scholar]
- De Korte D, Haverkort WA, de Boer M, van Gennip AH, Roos D. Imbalance in the nucleotide pools of myeloid leukemia cells and HL-60 cells: correlation with cell cycle phase, proliferation, differentiation and transformation. Cancer Res. 1987;47:1841–1847. [PubMed] [Google Scholar]
- Dell'Antone P. Metabolic pathways in Ehrlich ascites tumor cells recovering from a low bioenergetic status. FEBS Lett. 1994;350:183–186. doi: 10.1016/0014-5793(94)00759-4. [DOI] [PubMed] [Google Scholar]
- Engstrom W, Zetterberg A. The relationship between purines, pyrimidines, nucleotides, and glutamine for fibroblast cell proliferation. J Biol Chem. 1984;256:7812–7819. doi: 10.1002/jcp.1041200218. [DOI] [PubMed] [Google Scholar]
- Fitzpatrick L, Jenkins HA, Butler M. Glucose and glutamine metabolism of a murine B-lymphocyte hybridoma grown in batch culture. Appl Biochem Biotechnol. 1993;43:93–116. doi: 10.1007/BF02916435. [DOI] [PubMed] [Google Scholar]
- Frenes SE, Furukawa RD, Li RK, Tumiati LC, Wersel RD, Mickle DA. In vitro assessment of the effects of glucose added to the University of Wisconsin solution on myocyte preservation. Circulation. 1992;86(5Suppl.):II289–II294. [PubMed] [Google Scholar]
- Glacken MW. Catabolic control of mammalian cell culture. Bio/Technology. 1988;6:1041–1050. [Google Scholar]
- Grammatikos SI, Valley U, Nimtz M, Conradt HS, Wagner R. Intracellular UDP-N-acetylhexosamine pool affects N-glycan complexity: A mechanism of ammonium action on protein glycosylation. Biotechnol Prog. 1998;14:410–419. doi: 10.1021/bp980005o. [DOI] [PubMed] [Google Scholar]
- Guppy M, Abas L, Neylon C, Whisson ME, Whitham S, Pethwick DW, Niu X. Fuel choices by human platelets in human plasma. Eur J Biochem. 1997;244:161–167. doi: 10.1111/j.1432-1033.1997.00161.x. [DOI] [PubMed] [Google Scholar]
- Henderson JF, Paterson ARP. Nucleotide Metabolism: An Introduction. New York: Academic Press; 1973. pp. 28–56. [Google Scholar]
- Jan DCH, Petch DA, Huzel N, Butler M. The effect of dissolved oxygen on the metabolic profile of a murine hybridoma grown in serum-free medium in continuous culture. Biotechnol Bioeng. 1997;54:153–164. doi: 10.1002/(SICI)1097-0290(19970420)54:2<153::AID-BIT7>3.0.CO;2-K. [DOI] [PubMed] [Google Scholar]
- Lanks KW, Li PW. End products of glucose and glutamine metabolism by cultured cell lines. J Cell Physiol. 1988;135:151–155. doi: 10.1002/jcp.1041350122. [DOI] [PubMed] [Google Scholar]
- Lehninger AL. Principles of Biochemistry. New York: Worth Publishers, Inc.; 1982. [Google Scholar]
- Lomax CA, Henderson JF. Adenosine formation and metabolism during adenosine triphosphate catabolism in Ehrlich ascites. Cancer Res. 1973;33:2825–2829. [PubMed] [Google Scholar]
- Lund P. L-glutamine and L-glutamate. In: Bergmeyer HU, editor. Methods of Enzymatic Analysis. 3rd ed. Weinheim: VCH Verlagsgesellschaft; 1985. pp. 357–363. [Google Scholar]
- Lundin A, Hasenson M, Persson J, Pousette A. Estimation of biomass in growing cell lines by adenosine triphosphate assay. Met. Enz. 1986;133:27–42. doi: 10.1016/0076-6879(86)33053-2. [DOI] [PubMed] [Google Scholar]
- McComb RB, Yushok WD. Metabolism of ascites tumor cells IV. Enzymatic reactions involved in adenosine triphosphate degradation induced by 2-deoxyglucose. Cancer Res. 1964;24:198–203. [PubMed] [Google Scholar]
- McKeehan WL. Glycolysis, glutaminolysis and cell proliferation. Cell Biol Int Rep. 1982;6:635–650. doi: 10.1016/0309-1651(82)90125-4. [DOI] [PubMed] [Google Scholar]
- Medina MA, Nunez de Castro I. Glutaminolysis and glycolysis interactions in proliferant cells. Int J Biochem. 1990;22:681–683. doi: 10.1016/0020-711x(90)90001-j. [DOI] [PubMed] [Google Scholar]
- Meijer JJ, van Dijken JP. Effects of glucose supply on myeloma growth and metabolism in chemostat culture. J Cell Physiol. 1995;162:191–198. doi: 10.1002/jcp.1041620205. [DOI] [PubMed] [Google Scholar]
- Miller WM, Wilke CR, Blanch HW. Transient responses of hybridoma cells to nutrient additions on continuous culture: I. Glucose pulse and step changes. Biotechnol Bioeng. 1989;33:447–486. doi: 10.1002/bit.260330413. [DOI] [PubMed] [Google Scholar]
- Miller WM, Wilke CR, Blanch HW. The transient responses of hybridoma cells to nutrient additions on continuous culture: II. Glutamine pulse and step changes. Biotechnol Bioeng. 1989;33:487–499. doi: 10.1002/bit.260330414. [DOI] [PubMed] [Google Scholar]
- Neermann J, Wagner R. Comparative analysis of glucose and glutamine metabolism in transformed mammalian cell lines, insect and primary liver cells. J Cell Physiol. 1996;166:152–169. doi: 10.1002/(SICI)1097-4652(199601)166:1<152::AID-JCP18>3.0.CO;2-H. [DOI] [PubMed] [Google Scholar]
- Petch D, Butler M. A profile of energy metabolism in a murine hybridoma: glucose and glutamine utilization. J Cell Physiol. 1994;161:71–76. doi: 10.1002/jcp.1041610110. [DOI] [PubMed] [Google Scholar]
- Reitzer LJ, Wice BM, Kennell D. The pentose cycle: control and essential function in HeLa cell nucleic acid synthesis. J Biol Chem. 1980;255:5616–5626. [PubMed] [Google Scholar]
- Ronca-Testoni S, Ronca G. Muscle 51-adenylic acid aminohydrolase. Kinetic properties of rat muscle enzyme treated with pyridoxal 50-phosphate. J Biol Chem. 1974;249:7723–7728. [PubMed] [Google Scholar]
- Ryll T, Wagner R. Intracellular ribonucleotide pools as a tool for monitoring the physiological state of in vitro cultivated mammalian cells during production processes. Biotechnol Bioeng. 1992;40:934–946. doi: 10.1002/bit.260400810. [DOI] [PubMed] [Google Scholar]
- Ryll T, Valley U, Wagner R. Biochemistry of growth inhibition by ammonium ions in mammalian cells. Biotechnol Bioeng. 1994;44:184–193. doi: 10.1002/bit.260440207. [DOI] [PubMed] [Google Scholar]
- Sri-Pathmanathan RM, Braddock P, Brindle KM. 31PNMR studies of glucose and glutamine metabolism in cultured mammalian cells. Biochim Biophys Acta. 1990;1051:131–137. doi: 10.1016/0167-4889(90)90184-f. [DOI] [PubMed] [Google Scholar]
- Wohlpart D, Kirman D, Gainer J. Effects of cell density and glucose and glutamine levels on the respiration rates of hybridoma cells. Biotechnol Bioeng. 1990;36:630–635. doi: 10.1002/bit.260360611. [DOI] [PubMed] [Google Scholar]
- Zielke HR, Ozand PT, Tildon JT, Sevdalian DA, Cornblath M. Growth of human diploid fibroblasts in the absence of glucose utilization. Proc Natl Acad Sci USA. 1976;73:4110–4114. doi: 10.1073/pnas.73.11.4110. [DOI] [PMC free article] [PubMed] [Google Scholar]