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Carlesso FN, Fuscaldi LL, Araújo RS, Teixeira CS, Oliveira MC, Fernandes SOA, Cassali GD, Reis DC, Barros ALB, Cardoso VN. Evaluation of (99m)Tc-HYNIC-βAla-Bombesin(7-14) as an agent for pancreas tumor detection in mice. ACTA ACUST UNITED AC 2015; 48:923-8. [PMID: 26445336 PMCID: PMC4617119 DOI: 10.1590/1414-431x20154506] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2014] [Accepted: 02/06/2015] [Indexed: 11/30/2022]
Abstract
Pancreatic adenocarcinoma is important in oncology because of its high mortality
rate. Deaths may be avoided if an early diagnosis could be achieved. Several types of
tumors overexpress gastrin-releasing peptide receptors (GRPr), including pancreatic
cancer cells. Thus, a radiolabeled peptide derivative of gastrin-releasing peptide
(GRP) may be useful as a specific imaging probe. The purpose of the present study was
to evaluate the feasibility of
using99mTc-HYNIC-βAla-Bombesin(7-14)as an imaging probe for
Capan-1 pancreatic adenocarcinoma. Xenographic pancreatic tumor was developed in nude
mice and characterized by histopathological analysis. Biodistribution studies and
scintigraphic images were carried out in tumor-bearing nude mice. The two methods
showed higher uptake by pancreatic tumor when compared to muscle (used as control),
and the tumor-to-muscle ratio indicated
that99mTc-HYNIC-βAla-Bombesin(7-14)uptake was four-fold
higher in tumor cells than in other tissues. Scintigraphic images also showed a clear
signal at the tumor site. The present data indicate
that99mTc-HYNIC-βAla-Bombesin(7-14)may be useful for the
detection of pancreatic adenocarcinoma.
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Affiliation(s)
- F N Carlesso
- Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, BR
| | - L L Fuscaldi
- Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, BR
| | - R S Araújo
- Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, BR
| | - C S Teixeira
- Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, BR
| | - M C Oliveira
- Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, BR
| | - S O A Fernandes
- Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, BR
| | - G D Cassali
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, BR
| | - D C Reis
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, BR
| | - A L B Barros
- Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, BR
| | - V N Cardoso
- Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, BR
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