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Pancreatic ductal adenocarcinoma cells employ integrin α6ß4 to form hemidesmosomes and regulate cell proliferation.
Humphries, Jonathan D; Zha, Junzhe; Burns, Jessica; Askari, Janet A; Below, Christopher R; Chastney, Megan R; Jones, Matthew C; Mironov, Aleksandr; Knight, David; O'Reilly, Derek A; Dunne, Mark J; Garrod, David R; Jorgensen, Claus; Humphries, Martin J.
Afiliación
  • Humphries JD; Wellcome Centre for Cell-Matrix Research, Faculty of Biology, Medicine & Health, Manchester Academic Health Science Centre, University of Manchester, Oxford Road, Manchester M13 9PT, UK.
  • Zha J; Wellcome Centre for Cell-Matrix Research, Faculty of Biology, Medicine & Health, Manchester Academic Health Science Centre, University of Manchester, Oxford Road, Manchester M13 9PT, UK.
  • Burns J; Wellcome Centre for Cell-Matrix Research, Faculty of Biology, Medicine & Health, Manchester Academic Health Science Centre, University of Manchester, Oxford Road, Manchester M13 9PT, UK.
  • Askari JA; Wellcome Centre for Cell-Matrix Research, Faculty of Biology, Medicine & Health, Manchester Academic Health Science Centre, University of Manchester, Oxford Road, Manchester M13 9PT, UK.
  • Below CR; Cancer Research UK Manchester Institute, The University of Manchester, Alderley Park, Cheshire SK10 4TG, UK.
  • Chastney MR; Wellcome Centre for Cell-Matrix Research, Faculty of Biology, Medicine & Health, Manchester Academic Health Science Centre, University of Manchester, Oxford Road, Manchester M13 9PT, UK.
  • Jones MC; Wellcome Centre for Cell-Matrix Research, Faculty of Biology, Medicine & Health, Manchester Academic Health Science Centre, University of Manchester, Oxford Road, Manchester M13 9PT, UK.
  • Mironov A; Electron Microscopy Core Facility (RRID: SCR_021147), Faculty of Biology, Medicine & Health, University of Manchester, Manchester M13 9PT, UK.
  • Knight D; Biological Mass Spectrometry Core Facility (RRID: SCR_020987), Faculty of Biology, Medicine & Health, Manchester Academic Health Science Centre, University of Manchester, Manchester M13 9PT, UK.
  • O'Reilly DA; Department of Hepatobiliary and Pancreatic Surgery, Manchester Royal Infirmary, Oxford Road, Manchester M13 9WL, UK; Faculty of Biology, Medicine & Health, Manchester Academic Health Science Centre, University of Manchester, Manchester M13 9PT, UK.
  • Dunne MJ; Faculty of Biology, Medicine & Health, Manchester Academic Health Science Centre, University of Manchester, Manchester M13 9PT, UK.
  • Garrod DR; Faculty of Biology, Medicine & Health, Manchester Academic Health Science Centre, University of Manchester, Manchester M13 9PT, UK.
  • Jorgensen C; Cancer Research UK Manchester Institute, The University of Manchester, Alderley Park, Cheshire SK10 4TG, UK.
  • Humphries MJ; Wellcome Centre for Cell-Matrix Research, Faculty of Biology, Medicine & Health, Manchester Academic Health Science Centre, University of Manchester, Oxford Road, Manchester M13 9PT, UK. Electronic address: martin.humphries@manchester.ac.uk.
Matrix Biol ; 110: 16-39, 2022 06.
Article en En | MEDLINE | ID: mdl-35405272
Pancreatic ductal adenocarcinoma (PDAC) has a dismal prognosis due to its aggressive progression, late detection and lack of druggable driver mutations, which often combine to result in unsuitability for surgical intervention. Together with activating mutations of the small GTPase KRas, which are found in over 90% of PDAC tumours, a contributory factor for PDAC tumour progression is formation of a rigid extracellular matrix (ECM) and associated desmoplasia. This response leads to aberrant integrin signalling, and accelerated proliferation and invasion. To identify the integrin adhesion systems that operate in PDAC, we analysed a range of pancreatic ductal epithelial cell models using 2D, 3D and organoid culture systems. Proteomic analysis of isolated integrin receptor complexes from human pancreatic ductal epithelial (HPDE) cells predominantly identified integrin α6ß4 and hemidesmosome components, rather than classical focal adhesion components. Electron microscopy, together with immunofluorescence, confirmed the formation of hemidesmosomes by HPDE cells, both in 2D and 3D culture systems. Similar results were obtained for the human PDAC cell line, SUIT-2. Analysis of HPDE cell secreted proteins and cell-derived matrices (CDM) demonstrated that HPDE cells secrete a range of laminin subunits and form a hemidesmosome-specific, laminin 332-enriched ECM. Expression of mutant KRas (G12V) did not affect hemidesmosome composition or formation by HPDE cells. Cell-ECM contacts formed by mouse and human PDAC organoids were also assessed by electron microscopy. Organoids generated from both the PDAC KPC mouse model and human patient-derived PDAC tissue displayed features of acinar-ductal cell polarity, and hemidesmosomes were visible proximal to prominent basement membranes. Furthermore, electron microscopy identified hemidesmosomes in normal human pancreas. Depletion of integrin ß4 reduced cell proliferation in both SUIT-2 and HPDE cells, reduced the number of SUIT-2 cells in S-phase, and induced G1 cell cycle arrest, suggesting a requirement for α6ß4-mediated adhesion for cell cycle progression and growth. Taken together, these data suggest that laminin-binding adhesion mechanisms in general, and hemidesmosome-mediated adhesion in particular, may be under-appreciated in the context of PDAC. Proteomic data are available via ProteomeXchange with the identifiers PXD027803, PXD027823 and PXD027827.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Neoplasias Pancreáticas / Carcinoma Ductal Pancreático Tipo de estudio: Prognostic_studies Límite: Animals / Humans Idioma: En Revista: Matrix Biol Asunto de la revista: BIOLOGIA MOLECULAR / BIOQUIMICA Año: 2022 Tipo del documento: Article Pais de publicación: Países Bajos

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Neoplasias Pancreáticas / Carcinoma Ductal Pancreático Tipo de estudio: Prognostic_studies Límite: Animals / Humans Idioma: En Revista: Matrix Biol Asunto de la revista: BIOLOGIA MOLECULAR / BIOQUIMICA Año: 2022 Tipo del documento: Article Pais de publicación: Países Bajos