0000000000925050

AUTHOR

Danilo Cucchi

showing 2 related works from this author

Noncanonical GLI1 signaling promotes stemness features and in vivo growth in lung adenocarcinoma

2016

Aberrant Hedgehog/GLI signaling has been implicated in a diverse spectrum of human cancers, but its role in lung adenocarcinoma (LAC) is still under debate. We show that the downstream effector of the Hedgehog pathway, GLI1, is expressed in 76% of LACs, but in roughly half of these tumors, the canonical pathway activator, Smoothened, is expressed at low levels, possibly owing to epigenetic silencing. In LAC cells including the cancer stem cell compartment, we show that GLI1 is activated noncanonically by MAPK/ERK signaling. Different mechanisms can trigger the MAPK/ERK/GLI1 cascade including KRAS mutation and stimulation of NRP2 by VEGF produced by the cancer cells themselves in an autocrin…

0301 basic medicineMAPK/ERK pathwayCancer ResearchLung NeoplasmsPyridinesPyridineMitogen-Activated Protein Kinase KinaseMice SCIDMiceCarcinoma Non-Small-Cell LungRNA Small InterferingNon-Small-Cell LungMolecular Biology; Genetics; Cancer ResearchTumorbiologyintegumentary systemHedgehog signaling pathwayCell biologyNeoplastic Stem CellsFemaleRNA InterferenceOriginal ArticleHumanXenograft Model Antitumor AssayAdenocarcinomaSCIDSmall InterferingZinc Finger Protein GLI1Cell LineProto-Oncogene Proteins p21(ras)Adenocarcinoma; Animals; Carcinoma Non-Small-Cell Lung; Cell Line Tumor; Female; Humans; Lung Neoplasms; Mice; Mice SCID; Mitogen-Activated Protein Kinase Kinases; Neoplastic Stem Cells; Neuropilin-2; Proto-Oncogene Proteins p21(ras); Pyridines; Pyrimidines; RNA Interference; RNA Small Interfering; Xenograft Model Antitumor Assays; Zinc Finger Protein GLI1; Molecular Biology; Genetics; Cancer Research03 medical and health sciencesParacrine signallingGeneticSettore MED/04 - PATOLOGIA GENERALEstem cellsCancer stem cellGLI1Cell Line TumorGeneticsAnimalsHumansAutocrine signallingMolecular BiologyMitogen-Activated Protein Kinase KinasesSettore MED/06 - ONCOLOGIA MEDICAAnimalCarcinomaXenograft Model Antitumor AssaysNeuropilin-2Lung Neoplasmlung cancer030104 developmental biologyPyrimidinesPyrimidineCancer cellbiology.proteinRNANeoplastic Stem CellSmoothened
researchProduct

Abstract 2484: Non-canonical Hedgehog/Gli1 signaling drives lung adenocarcinoma stem cells survival and its targeting inhibits CSC-derived tumors

2016

Abstract Introduction: Lung Adenocarcinoma (AC) is the most frequent lung cancer histological subtype and is a leading cause of cancer-related death worldwide. Hedgehog/Gli (Hh/Gli) signaling pathway regulates lung development and its aberrant activation contributes to tumor pathogenesis and play a role in cancer stem cells (CSC) control. We investigated oncogenic Hh/Gli signaling in AC-CSC. Methods: human AC-CSC were derived from primary tumors. For in vitro studies AC-CSC were maintained in serum-free medium supplemented with EGF/bFGF. For in vivo experiments, immunocompromised mice were injected with AC-CSC. Gli1 inhibitor GANT61 was used both in vitro and in vivo (IP 40 mg/kg twice/we) …

MAPK/ERK pathwayCancer Researchmedicine.medical_specialtyBiologyParacrine signallingEndocrinologyOncologyCancer stem cellGLI1Internal medicineCancer researchmedicinebiology.proteinStem cellAutocrine signallingSmoothenedHedgehogCancer Research
researchProduct