title: MIA PaCa-2 and PANC-1 - pancreas ductal adenocarcinoma cell lines with neuroendocrine differentiation and somatostatin receptors.
abstract: Studies using cell lines should always characterize these cells to ensure that the results are not distorted by unexpected morphological or genetic changes possibly due to culture time or passage number. Thus, the aim of this study was to describe those MIA PaCa-2 and PANC-1 cell line phenotype and genotype characteristics that may play a crucial role in pancreatic cancer therapeutic assays, namely neuroendocrine chemotherapy and peptide receptor radionuclide therapy. Epithelial, mesenchymal, endocrine and stem cell marker characterization was performed by immunohistochemistry and flow cytometry, and genotyping by PCR, gene sequencing and capillary electrophoresis. MIA PaCa-2 (polymorphism) expresses CK5.6, AE1/AE3, E-cadherin, vimentin, chromogranin A, synaptophysin, SSTR2 and NTR1 but not CD56. PANC-1 (pleomorphism) expresses CK5.6, MNF-116, vimentin, chromogranin A, CD56 and SSTR2 but not E-cadherin, synaptophysin or NTR1. MIA PaCA-1 is CD24(-), CD44(+/++), CD326(-/+) and CD133/1(-), while PANC-1 is CD24(-/+), CD44(+), CD326(-/+) and CD133/1(-). Both cell lines have KRAS and TP53 mutations and homozygous deletions including the first 3 exons of CDKN2A/p16(INK4A), but no SMAD4/DPC4 mutations or microsatellite instability. Both have neuroendocrine differentiation and SSTR2 receptors, precisely the features making them suitable for the therapies we propose to assay in future studies.
authors.affiliation: General Pathology Laboratory, Faculty of Medicine, University of Coimbra, Coimbra, Portugal.|CIMAGO - Research Center for Environment, Genetics and Oncobiology, Faculty of Medicine, University of Coimbra, Coimbra, Portugal.
authors.forename: Rui
authors.initials: R
authors.lastname: Gradiz
authors.affiliation: Medical Genetics' Unit, Faculty of Medicine, University of Coimbra, Coimbra, Portugal.|CIMAGO - Research Center for Environment, Genetics and Oncobiology, Faculty of Medicine, University of Coimbra, Coimbra, Portugal.
authors.forename: Henriqueta C
authors.initials: HC
authors.lastname: Silva
authors.affiliation: Anatomical and Molecular Pathology Department, Faculty of Medicine, University of Coimbra, Coimbra, Portugal.|CIMAGO - Research Center for Environment, Genetics and Oncobiology, Faculty of Medicine, University of Coimbra, Coimbra, Portugal.
authors.forename: Lina
authors.initials: L
authors.lastname: Carvalho
authors.affiliation: Biophysics' Unit, Faculty of Medicine, University of Coimbra, Coimbra, Portugal.|CIMAGO - Research Center for Environment, Genetics and Oncobiology, Faculty of Medicine, University of Coimbra, Coimbra, Portugal.|CNC.IBILI, University of Coimbra, Portugal.
authors.forename: Maria Filomena
authors.initials: MF
authors.lastname: Botelho
authors.affiliation: General Pathology Laboratory, Faculty of Medicine, University of Coimbra, Coimbra, Portugal.|CIMAGO - Research Center for Environment, Genetics and Oncobiology, Faculty of Medicine, University of Coimbra, Coimbra, Portugal.|CNC.IBILI, University of Coimbra, Portugal.
authors.forename: Anabela
authors.initials: A
authors.lastname: Mota-Pinto
mesh_terms: D014408:Biomarkers, Tumor / Q000032:analysis*; D021441:Carcinoma, Pancreatic Ductal / Q000473:pathology*; D002454:Cell Differentiation; D045744:Cell Line, Tumor / Q000502:physiology*; D005434:Flow Cytometry; D005838:Genotype; D006801:Humans; D007150:Immunohistochemistry; D010641:Phenotype; D016133:Polymerase Chain Reaction; D017481:Receptors, Somatostatin / Q000032:analysis*
chemical_list: D014408:Biomarkers, Tumor; D017481:Receptors, Somatostatin