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Evaluating mmp-2 and tgfß-ri expression in circulating tumor cells of pancreatic cancer patients and their correlation with clinical evolution / Avaliação da expressão de mmp-2 e tgfß-ri em células tumorais circulantes de pacientes com câncer de pâncreas e sua correlação com evolução clínica
Gasparini-Junior, José Luiz; Fanelli, Marcello Ferretti; Abdallah, Emne Ali; Chinen, Ludmilla Thomé Domingos.
  • Gasparini-Junior, José Luiz; A.C. Camargo Cancer Center. International Research Center. São Paulo. BR
  • Fanelli, Marcello Ferretti; A.C. Camargo Cancer Center. International Research Center. São Paulo. BR
  • Abdallah, Emne Ali; A.C. Camargo Cancer Center. International Research Center. São Paulo. BR
  • Chinen, Ludmilla Thomé Domingos; A.C. Camargo Cancer Center. International Research Center. São Paulo. BR
ABCD (São Paulo, Impr.) ; 32(2): e1433, 2019. tab, graf
Article in English | LILACS | ID: biblio-1001041
ABSTRACT
ABSTRACT

Background:

Metastasis is common in the diagnosis of pancreatic cancer, and the presence of epithelial-mesenchymal transition markers in circulating tumor cells may suggest worse prognosis.

Aim:

To correlate the number of circulating tumor cells (CTCs) in the peripheral blood of patients with a locally advanced or metastatic pancreatic tumor and the protein expression involved in epithelial-mesenchymal transition (EMT) in CTCs with clinical characteristics, progression-free survival (PFS) and overall survival (OS).

Method:

This was a prospective study conducted using peripheral blood samples collected at three different times. CTCs were quantified by the ISET test and analyzed by immunocytochemistry. Proteins involved in EMT (vimentin, TGFß-RI and MMP2) were analyzed in all CTCs.

Results:

Twenty-one patients were included. Median CTCs detected were 22, 20 and 8 CTCs/8 ml blood at baseline, first and second follow-up, respectively. No statistically significant correlation was found in correlating the number of CTCs and the evaluated clinical characteristics, PFS, or OS. There was no difference in PFS and OS among the EMT markers in the groups with and without markers.

Conclusion:

CTC analysis was not relevant in this sample for comparing clinical findings, PFS and OS in patients with pancreatic cancer. However, marker analysis in CTCs could be useful for the MMP-2 and/or TGFß-RI expression, as observed by the separate PFS curve.
RESUMO
RESUMO Racional A metástase é comum no diagnóstico de câncer de pâncreas; presença de marcadores de transição epitélio-mesenquimal nas células tumorais circulantes (CTCs) podem sugerir pior prognóstico.

Objetivo:

Correlacionar o número de CTCs no sangue periférico de pacientes com tumor de pâncreas localmente avançado ou metastático e expressão de proteínas envolvidas na transição epitélio-mesenquimal (TEM) nas CTCs com características clínicas, sobrevida livre de progressão (SLP) e global (SG).

Método:

Estudo prospectivo realizado por meio de coletas de sangue periférico em três tempos distintos. As CTCs foram quantificadas pelo sistema ISET e analisadas por imunocitoquímica. Proteínas envolvidas na TEM (vimentina, TGFß-RI e MMP2) foram analisadas em todas as CTCs.

Resultados:

Foram incluídos 21 pacientes. A mediana de CTCs detectadas foi de 22, 20 e 8 CTCs/8 ml de sangue no baseline, primeiro e segundo seguimentos, respectivamente. Na correlação entre número de CTCs e as características clínicas levantadas, SLP, SG não houve correlação estatisticamente significante. Nos marcadores de TEM não houve diferença de SLP e SG entre os grupos que apresentaram e não apresentaram marcação.

Conclusão:

As CTCs não se mostraram relevantes na comparação dos achados clínicos, SLP e SG em pacientes com câncer de pâncreas. No entretanto, pode ser que para a análise de marcador seja útil, como observado pelas curvas separadas de expressão de MMP-2 e TGFß-RI nas CTCs.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Pancreatic Neoplasms / Adenocarcinoma / Matrix Metalloproteinase 2 / Receptor, Transforming Growth Factor-beta Type I / Neoplastic Cells, Circulating Type of study: Observational study / Prognostic study Limits: Adult / Aged / Aged80 / Female / Humans / Male Language: English Journal: ABCD (São Paulo, Impr.) Year: 2019 Type: Article Affiliation country: Brazil Institution/Affiliation country: A.C. Camargo Cancer Center/BR

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Full text: Available Index: LILACS (Americas) Main subject: Pancreatic Neoplasms / Adenocarcinoma / Matrix Metalloproteinase 2 / Receptor, Transforming Growth Factor-beta Type I / Neoplastic Cells, Circulating Type of study: Observational study / Prognostic study Limits: Adult / Aged / Aged80 / Female / Humans / Male Language: English Journal: ABCD (São Paulo, Impr.) Year: 2019 Type: Article Affiliation country: Brazil Institution/Affiliation country: A.C. Camargo Cancer Center/BR