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Comparison of radiohaloanalogues of meta-iodobenzylguanidine (MIBG) for a combined gene- and targeted radiotherapy approach to bladder carcinoma.

Publication ,  Journal Article
Fullerton, NE; Boyd, M; Ross, SC; Pimlott, SL; Babich, J; Kirk, D; Zalutsky, MR; Mairs, RJ
Published in: Med Chem
November 2005

Targeted radiotherapy using radiolabelled meta-iodobenzylguanidine (MIBG) is a promising treatment option for bladder cancer, restricting the effects of radiotherapy to malignant cells thereby increasing efficacy and decreasing morbidity of radiotherapy. We investigated the efficacy of a combined gene therapy and targeted radiotherapy approach for bladder cancer using radiolabelled MIBG. The effectiveness of alternative radiohalogens and alternative preparations of radiolabelled MIBG for this therapeutic strategy were compared. Bladder cancer cells, EJ138, were transfected with a gene encoding the noradrenaline transporter (NAT) under the control of a tumour specific telomerase promoter, enabling them to actively take up radiolabelled MIBG. This resulted in tumour-specific cell kill. Uptake and retention of radioactivity in cells transfected with the NAT gene were compared with that obtained in cells transfected with the sodium iodide symporter (NIS) gene. Substantially greater uptake and longer retention of radioactivity in NAT-transfected cells was observed. Carrier-added (c.a.) [131I]MIBG, no-carrier added (n.c.a.) [131I]MIBG, and [211At]-labelled benzylguanidine (i.e. [211At] meta-astatobenzylguanidine (MABG)) were compared with respect to efficiency of induction of cell kill. N.c.a[(131)I]MIBG was more cytotoxic than c.a.[131I]MIBG. However, the alpha-emitter [211At]MABG was, by three orders of magnitude, more effective in causing tumour cell kill than the beta-emitter [131I]MIBG. We conclude that NAT gene transfer combined with the administration of n.c.a.[131I]MIBG or [211At]MABG, is a promising novel treatment approach for bladder cancer therapy.

Duke Scholars

Published In

Med Chem

DOI

ISSN

1573-4064

Publication Date

November 2005

Volume

1

Issue

6

Start / End Page

611 / 618

Location

Netherlands

Related Subject Headings

  • Urinary Bladder Neoplasms
  • Tumor Cells, Cultured
  • Symporters
  • Structure-Activity Relationship
  • Radiopharmaceuticals
  • Norepinephrine Plasma Membrane Transport Proteins
  • Medicinal & Biomolecular Chemistry
  • Iodine Radioisotopes
  • Iodates
  • Humans
 

Citation

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Fullerton, N. E., Boyd, M., Ross, S. C., Pimlott, S. L., Babich, J., Kirk, D., … Mairs, R. J. (2005). Comparison of radiohaloanalogues of meta-iodobenzylguanidine (MIBG) for a combined gene- and targeted radiotherapy approach to bladder carcinoma. Med Chem, 1(6), 611–618. https://doi.org/10.2174/157340605774598090
Fullerton, Natasha E., Marie Boyd, Susan C. Ross, Sally L. Pimlott, John Babich, David Kirk, Michael R. Zalutsky, and Robert J. Mairs. “Comparison of radiohaloanalogues of meta-iodobenzylguanidine (MIBG) for a combined gene- and targeted radiotherapy approach to bladder carcinoma.Med Chem 1, no. 6 (November 2005): 611–18. https://doi.org/10.2174/157340605774598090.
Fullerton NE, Boyd M, Ross SC, Pimlott SL, Babich J, Kirk D, et al. Comparison of radiohaloanalogues of meta-iodobenzylguanidine (MIBG) for a combined gene- and targeted radiotherapy approach to bladder carcinoma. Med Chem. 2005 Nov;1(6):611–8.
Fullerton, Natasha E., et al. “Comparison of radiohaloanalogues of meta-iodobenzylguanidine (MIBG) for a combined gene- and targeted radiotherapy approach to bladder carcinoma.Med Chem, vol. 1, no. 6, Nov. 2005, pp. 611–18. Pubmed, doi:10.2174/157340605774598090.
Fullerton NE, Boyd M, Ross SC, Pimlott SL, Babich J, Kirk D, Zalutsky MR, Mairs RJ. Comparison of radiohaloanalogues of meta-iodobenzylguanidine (MIBG) for a combined gene- and targeted radiotherapy approach to bladder carcinoma. Med Chem. 2005 Nov;1(6):611–618.
Journal cover image

Published In

Med Chem

DOI

ISSN

1573-4064

Publication Date

November 2005

Volume

1

Issue

6

Start / End Page

611 / 618

Location

Netherlands

Related Subject Headings

  • Urinary Bladder Neoplasms
  • Tumor Cells, Cultured
  • Symporters
  • Structure-Activity Relationship
  • Radiopharmaceuticals
  • Norepinephrine Plasma Membrane Transport Proteins
  • Medicinal & Biomolecular Chemistry
  • Iodine Radioisotopes
  • Iodates
  • Humans