Proposition de sujet de thèse à l’appui d’une demande de contrat doctoral 2017-2087
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Nom, prénom du directeur de l'unité de recherche : Di SANTO JAMES
Numéro de l'unité de recherche (et établissement de rattachement) : Institut Pasteur : INSERM U1223
Physiopathologie Du Système Immunitaire
Nom, prénom du responsable de l'équipe d'accueil (EAD) : POL Stanislas
Nom, prénom du directeur de thèse : LAGAYE Sylvie
Titre du sujet de thèse proposé: (en anglais) Study of the implication of immune cells, Th17-type
cytokines and biomarkers in the human hepatic fibrogenesis process and evaluation of anti-fibrotic
treatments
Citer 5 mots clés : immune cells, fibrosis, Liver, ex vivo model, anti-fibrosis drugs
(key words)
Candidat pressenti : OUI NON
Contenu scientifique du programme de la thèse (en anglais)
We propose to establish an ex vivo model of adult human liver slices culture allowing to identify the different
immune cell populations (lymphocytes, monocytes, macrophages ...) intra-hepatic and to quantify anti-
inflammatory cytokines like IL-10 and pro-inflammatory (IL-17A), Hepatoprotective (IL-22) produced by the
Th17 cells released into the culture supernatants:
1- from healthy human liver cultures to establish a "gold standard" compared to blood samples;
2- from pathological human liver cultures from patients with liver fibrosis at different stages compared to
blood samples. The characterization and quantification of the lymphocyte populations will be carried out
by the real-time RT-qPCR technique as well as by flow cytometry, histochemical marking and the
quantification of cytokines by the ELISA technique.
This established ex vivo model of culture of normal and pathological human liver slices should allow us:
1- to know the intrahepatic immune cell repertoire from healthy liver and fibrotic liver and to study the role
of lymphocyte cells and the role of IL-17A and IL-22 in liver fibrosis.
2-with or without exposure to the main toxic substances in the liver, to evaluate the effectiveness of the
various anti-fibrotic drugs alone or in combination.
Indiquez les cinq meilleures publications récentes de l’équipe:
1. Lagaye S, Brun S, Gaston J, Shen H, Stranska R, Camus C, Dubray C, Rousseau G, Massault
PP,Courcambeck J, Bassisi F, Halfon P, Pol S. Anti-hepatitis C virus potency of a new autophagy inhibitor
using human liver slices model. World Journal of Hepatology. 2016;8:902-14.
2. Sultanik P, Mallet V, Lagaye S, Casrouge A, Dorival C, Barthe Y, Fontaine H, Hezode C, Mottez E,
Bronowicki JP, Carrat F, Theodorou I, Abel L, Gayat E, Fontanet A, Pol S, Albert ML. Plasma
apolipoprotein H limits HCV replication and associates with response to NS3 protease inhibitors-based
therapy. Liver international:2015 Jul;35(7):1833-44.
3. Pol S. Hepatitis: HBV vaccine-the first vaccine to prevent cancer. Nature reviews Gastroenterology &
hepatology. 2015 Apr;12(4):190-1.
4. Pol S, Sulkowski MS, Hassanein T, Gane EJ, Liu L, Mo H, Doehle B, Kanwar B, Brainard D,
Subramanian GM, Symonds WT, McHutchison JG, Nahass RG, Bennett M, Jacobson IM. Sofosbuvir plus
pegylated interferon and ribavirin in patients with genotype 1 hepatitis C virus in whom previous therapy
with direct-acting antivirals has failed. Hepatology 2015 Jul;62(1):129-34.
5.Lagaye S, Shen H, Saunier B, Nascimbeni M, Gaston J, Bourdoncle P, Hannoun L, Massault PP, Vallet-
Pichard A, Mallet V, Pol S. Efficient replication of primary or culture hepatitis C virus isolates in human
liver slices: a relevant ex vivo model of liver infection. Hepatology 2012 Sep;56(3):861-72.