Skip to main content
Erschienen in: International Journal of Clinical Oncology 5/2018

10.05.2018 | Original Article

In vivo detection of acute intracellular acidification in glioblastoma multiforme following a single dose of cariporide

verfasst von: Mohammed Albatany, Alex Li, Susan Meakin, Robert Bartha

Erschienen in: International Journal of Clinical Oncology | Ausgabe 5/2018

Einloggen, um Zugang zu erhalten

Abstract

Glioblastoma is an aggressive brain cancer that is very difficult to treat. Clinically, it is important to be able to distinguish aggressive from non-aggressive brain tumors. Previous studies have shown that some drugs can induce a rapid change in intracellular pH that could help to identify aggressive cancer. The sodium proton exchanger (NHE1) plays a significant role in maintaining pH balance in the tumor microenvironment. Cariporide is a sodium proton exchange inhibitor that is well tolerated by humans in cardiac applications. We hypothesized that cariporide could selectively acidify brain tumors. The purpose of this study was to determine whether amine/amide concentration-independent detection (AACID) chemical exchange saturation transfer (CEST) MRI measurement of tumor pHi could detect acidification after cariporide injection. Using a 9.4T MRI scanner, CEST spectra were acquired in six mice approximately 14 days after implanting 105 U87 human glioblastoma multiforme cells in the brain, before and after administration of cariporide (dose: 6 mg/kg) by intraperitoneal injection. Three additional mice were studied as controls and received only vehicle injection (DMSO + PBS). Repeated measures t test was used to examine changes in tumor and contralateral tissue regions of interest. Two hours after cariporide injection, there was a significant 0.12 ± 0.03 increase in tumor AACID value corresponding to a 0.48 decrease in pHi and no change in AACID value in contralateral tissue. A small but significant increase of 0.04 ± 0.017 in tumor AACID value was also observed following vehicle injection. This study demonstrates that acute CEST MRI contrast changes, indicative of intracellular acidification, after administration of cariporide could help localize glioblastoma.
Literatur
4.
Zurück zum Zitat Easaw JC, Mason WP, Perry J, Canadian Glioblastoma Recommendations C et al (2011) Canadian recommendations for the treatment of recurrent or progressive glioblastoma multiforme. Curr Oncol 18(3):e126–e136CrossRef Easaw JC, Mason WP, Perry J, Canadian Glioblastoma Recommendations C et al (2011) Canadian recommendations for the treatment of recurrent or progressive glioblastoma multiforme. Curr Oncol 18(3):e126–e136CrossRef
5.
Zurück zum Zitat Gerweck LE, Seetharaman K (1996) Cellular pH gradient in tumor versus normal tissue: potential exploitation for the treatment of cancer. Cancer Res 56(6):1194–1198PubMed Gerweck LE, Seetharaman K (1996) Cellular pH gradient in tumor versus normal tissue: potential exploitation for the treatment of cancer. Cancer Res 56(6):1194–1198PubMed
6.
Zurück zum Zitat Stubbs M, Bhujwalla ZM, Tozer GM et al (1992) An assessment of 31P MRS as a method of measuring pH in rat tumours. NMR Biomed 5(6):351–359CrossRef Stubbs M, Bhujwalla ZM, Tozer GM et al (1992) An assessment of 31P MRS as a method of measuring pH in rat tumours. NMR Biomed 5(6):351–359CrossRef
10.
Zurück zum Zitat Maintz D, Heindel W, Kugel H et al (2002) Phosphorus-31 MR spectroscopy of normal adult human brain and brain tumours. NMR Biomed 15(1):18–27CrossRef Maintz D, Heindel W, Kugel H et al (2002) Phosphorus-31 MR spectroscopy of normal adult human brain and brain tumours. NMR Biomed 15(1):18–27CrossRef
15.
Zurück zum Zitat Shrode LD, Tapper H, Grinstein S (1997) Role of intracellular pH in proliferation, transformation, and apoptosis. J Bioenerg Biomembr 29(4):393–399CrossRef Shrode LD, Tapper H, Grinstein S (1997) Role of intracellular pH in proliferation, transformation, and apoptosis. J Bioenerg Biomembr 29(4):393–399CrossRef
18.
Zurück zum Zitat Wood PJ, Sansom JM, Newell K et al (1995) Reduction of tumour intracellular pH and enhancement of melphalan cytotoxicity by the ionophore Nigericin. Int J Cancer 60(2):264–268CrossRef Wood PJ, Sansom JM, Newell K et al (1995) Reduction of tumour intracellular pH and enhancement of melphalan cytotoxicity by the ionophore Nigericin. Int J Cancer 60(2):264–268CrossRef
25.
Zurück zum Zitat McLean LA, Roscoe J, Jorgensen NK et al (2000) Malignant gliomas display altered pH regulation by NHE1 compared with nontransformed astrocytes. Am J Physiol Cell Physiol 278(4):C676-688CrossRef McLean LA, Roscoe J, Jorgensen NK et al (2000) Malignant gliomas display altered pH regulation by NHE1 compared with nontransformed astrocytes. Am J Physiol Cell Physiol 278(4):C676-688CrossRef
26.
Zurück zum Zitat Lagana A, Vadnais J, Le PU et al (2000) Regulation of the formation of tumor cell pseudopodia by the Na+/H+ exchanger NHE1. J Cell Sci 113(20):3649–3662PubMed Lagana A, Vadnais J, Le PU et al (2000) Regulation of the formation of tumor cell pseudopodia by the Na+/H+ exchanger NHE1. J Cell Sci 113(20):3649–3662PubMed
29.
Zurück zum Zitat Glunde K, Düssmann H, Juretschke HP et al (2002) Na(+)/H(+) exchange subtype 1 inhibition during extracellular acidification and hypoxia in glioma cells. J Neurochem 80(1):36–44CrossRef Glunde K, Düssmann H, Juretschke HP et al (2002) Na(+)/H(+) exchange subtype 1 inhibition during extracellular acidification and hypoxia in glioma cells. J Neurochem 80(1):36–44CrossRef
33.
38.
Zurück zum Zitat Wong P (2001) The potential of two new inhibitors of mechanisms that regulate intracellular pH, cariporide and S3705, to inhibit tumour cell proliferation. Canadian theses = Thèses canadiennes. National Library of Canada, Ottawa Wong P (2001) The potential of two new inhibitors of mechanisms that regulate intracellular pH, cariporide and S3705, to inhibit tumour cell proliferation. Canadian theses = Thèses canadiennes. National Library of Canada, Ottawa
Metadaten
Titel
In vivo detection of acute intracellular acidification in glioblastoma multiforme following a single dose of cariporide
verfasst von
Mohammed Albatany
Alex Li
Susan Meakin
Robert Bartha
Publikationsdatum
10.05.2018
Verlag
Springer Japan
Erschienen in
International Journal of Clinical Oncology / Ausgabe 5/2018
Print ISSN: 1341-9625
Elektronische ISSN: 1437-7772
DOI
https://doi.org/10.1007/s10147-018-1289-0

Weitere Artikel der Ausgabe 5/2018

International Journal of Clinical Oncology 5/2018 Zur Ausgabe

Update Onkologie

Bestellen Sie unseren Fach-Newsletter und bleiben Sie gut informiert.