Magnetic resonance detects metabolic changes associated with chemotherapy induced apoptosis

Sabrina Ronen, S DiStefano, C McCoy, D Robertson, Timothy Andrew Davies Smith, Jenny Titley, Martin Leach

Research output: Contribution to journalArticle

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Abstract

Apoptosis was induced by treating L1210 leukaemia cells with mechlorethamine, and SW620 colorectal cells with doxorubicin. The onset and progression of apoptosis were monitored by assessing caspase activation, mitochondrial transmembrane potential, phosphatidylserine externalization, DNA fragmentation and cell morphology. In parallel, 31P magnetic resonance (MR) spectra of cell extracts were recorded. In L1210 cells, caspase activation was detected at 4 h. By 3 h, the MR spectra showed a steady decrease in NTP and NAD, and a significant build-up of fructose 1,6-bisphosphate (F-1,6-P) dihydroxyacetonephosphate and glycerol-3-phosphate, indicating modulation of glycolysis. Treatment with iodoacetate also induced a build-up of F-1,6-P, while preincubation with two poly(ADP-ribose) polymerase inhibitors, 3-aminobenzamide and nicotinamide, prevented the drop in NAD and the build-up of glycolytic intermediates. This suggested that our results were due to inhibition of glyceraldehyde-3-phosphate dehydrogenase, possibly as a consequence of NAD depletion following poly(ADP-ribose) polymerase activation. Doxorubicin treatment of the adherent SW620 cells caused cells committed to apoptosis to detach. F-1,6-P was observed in detached cells, but not in treated cells that remained attached. This indicated that our observations were not cell line- or treatment-specific, but were correlated with the appearance of apoptotic cells following drug treatment. The 31P MR spectrum of tumours responding to chemotherapy could be modulated by similar effects.
Original languageEnglish
Pages (from-to)1035-1041
Number of pages7
JournalBritish Journal of Cancer
Volume80
Issue number7
DOIs
Publication statusPublished - 1 Jan 1999

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Magnetic Resonance Spectroscopy
Apoptosis
Drug Therapy
NAD
Caspases
Doxorubicin
Iodoacetates
Leukemia L1210
Mechlorethamine
Glyceraldehyde-3-Phosphate Dehydrogenases
Niacinamide
Poly(ADP-ribose) Polymerases
Phosphatidylserines
Glycolysis
DNA Fragmentation
Therapeutics
Cell Extracts
Membrane Potentials
Cell Line
Pharmaceutical Preparations

Keywords

  • apoptosis
  • magnetic resonance spectroscopy (MRS)
  • chemotherapy
  • glycolysis
  • poly(ADP-ribose) polymerase (PARP)

Cite this

Ronen, S., DiStefano, S., McCoy, C., Robertson, D., Smith, T. A. D., Titley, J., & Leach, M. (1999). Magnetic resonance detects metabolic changes associated with chemotherapy induced apoptosis. British Journal of Cancer, 80(7), 1035-1041. https://doi.org/10.1038/sj.bjc.6690459

Magnetic resonance detects metabolic changes associated with chemotherapy induced apoptosis. / Ronen, Sabrina; DiStefano, S; McCoy, C; Robertson, D; Smith, Timothy Andrew Davies; Titley, Jenny; Leach, Martin .

In: British Journal of Cancer, Vol. 80, No. 7, 01.01.1999, p. 1035-1041.

Research output: Contribution to journalArticle

Ronen, S, DiStefano, S, McCoy, C, Robertson, D, Smith, TAD, Titley, J & Leach, M 1999, 'Magnetic resonance detects metabolic changes associated with chemotherapy induced apoptosis', British Journal of Cancer, vol. 80, no. 7, pp. 1035-1041. https://doi.org/10.1038/sj.bjc.6690459
Ronen S, DiStefano S, McCoy C, Robertson D, Smith TAD, Titley J et al. Magnetic resonance detects metabolic changes associated with chemotherapy induced apoptosis. British Journal of Cancer. 1999 Jan 1;80(7):1035-1041. https://doi.org/10.1038/sj.bjc.6690459
Ronen, Sabrina ; DiStefano, S ; McCoy, C ; Robertson, D ; Smith, Timothy Andrew Davies ; Titley, Jenny ; Leach, Martin . / Magnetic resonance detects metabolic changes associated with chemotherapy induced apoptosis. In: British Journal of Cancer. 1999 ; Vol. 80, No. 7. pp. 1035-1041.
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