0000000000297691

AUTHOR

Meriem Messaoudene

showing 2 related works from this author

Characterization of the Microenvironment in Positive and Negative Sentinel Lymph Nodes from Melanoma Patients

2015

Melanomas are aggressive skin tumors characterized by high metastatic potential. Our previous results indicate that Natural Killer (NK) cells may control growth of melanoma. The main defect of blood NK cells was a decreased expression of activating NCR1/NKp46 receptor and a positive correlation of NKp46 expression with disease outcome in stage IV melanoma patients was found. In addition, in stage III melanoma patients, we identified a new subset of mature NK cells in macro-metastatic Lymph nodes (LN). In the present studies, we evaluated the numbers of NK cells infiltrating primary cutaneous melanoma and analyzed immune cell subsets in a series of sentinel lymph nodes (SLN). First, we show …

AdultMalePathologymedicine.medical_specialtyCD34lcsh:MedicineCD8-Positive T-LymphocytesBiologyTumor MicroenvironmentmedicineHumansCytotoxic T celllcsh:ScienceMelanomaAgedNeoplasm StagingAged 80 and overTumor microenvironmentMultidisciplinarySentinel Lymph Node BiopsyMacrophagesMelanomalcsh:REndothelial CellsMiddle Agedmedicine.diseaseAntigens Differentiation3. Good healthKiller Cells NaturalGranzyme BCutaneous melanomalcsh:QFemaleLymphCD8Research ArticlePLOS ONE
researchProduct

Cross-reactivity between tumor MHC class I-restricted antigens and an enterococcal bacteriophage

2020

International audience; Intestinal microbiota have been proposed to induce commensal-specific memory T cells that cross-react with tumor-associated antigens. We identified major histocompatibility complex (MHC) class I-binding epitopes in the tail length tape measure protein (TMP) of a prophage found in the genome of the bacteriophage Enterococcus hirae Mice bearing E. hirae harboring this prophage mounted a TMP-specific H-2Kb-restricted CD8+ T lymphocyte response upon immunotherapy with cyclophosphamide or anti-PD-1 antibodies. Administration of bacterial strains engineered to express the TMP epitope improved immunotherapy in mice. In renal and lung cancer patients, the presence of the ent…

H-2 AntigenProgrammed Cell Death 1 ReceptorCD8-Positive T-LymphocytesEpitopeEpitopesFecesMice0302 clinical medicineEnterococcus hiraeNeoplasmsMonoclonalBacteriophages0303 health sciencesMultidisciplinarybiologyAntibodies MonoclonalViral Tail ProteinsAlkylating3. Good healthmedicine.anatomical_structure030220 oncology & carcinogenesisCross ReactionEpitopeImmunotherapyHumanT cellAntineoplastic Agents[SDV.CAN]Life Sciences [q-bio]/CancerCross ReactionsMajor histocompatibility complexAntibodiesMicrobiology03 medical and health sciencesAnimals; Antibodies Monoclonal; Antigens Neoplasm; Antineoplastic Agents Alkylating; Bacteriophages; CD8-Positive T-Lymphocytes; Cross Reactions; Cyclophosphamide; Enterococcus hirae; Epitopes; Feces; Gastrointestinal Microbiome; H-2 Antigens; Histocompatibility Antigens Class I; Humans; Immunotherapy; Mice; Neoplasms; Programmed Cell Death 1 Receptor; Viral Tail Proteins[SDV.CAN] Life Sciences [q-bio]/CancerAntigenAntigens NeoplasmMHC class ImedicineAnimalsHumansAntigensBacteriophageAntineoplastic Agents AlkylatingCyclophosphamideProphage030304 developmental biologyEnterococcus hiraeAnimalHistocompatibility Antigens Class IH-2 AntigensCD8-Positive T-Lymphocytebiology.organism_classificationGastrointestinal Microbiomebiology.proteinNeoplasmFeceCD8
researchProduct