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ED BIO SORBONNE PARIS CITE
Proposition de sujet de thèse à l’appui d’une demande de contrat doctoral 2017-2018
Renseignements relatifs à l’Unité de Recherche :
Label et intitulé : Hepacivirus et Immunité Innée
Nom et prénom du Directeur : Eliane meurs
Téléphone :
0145688777
Télécopie : 0145688943
Courriel: [email protected]
Renseignements relatifs à l’Equipe :
Nom de l’Equipe d’Accueil :
Nom et prénom du responsable : Christine Neuveut
Qualité du responsable : DR2 Inserm
Téléphone :
0145688776
Télécopie :0145688943
Courriel :[email protected]
Renseignements relatifs au sujet de thèse :
Nom et prénom du Directeur de thèse (HDR) : Christine Neuveut
Qualité : DR2 Inserm
Téléphone :
0145688776
Télécopie : 0145688943
Courriel : [email protected]
Titre du sujet proposé :
Analyse quantitative des protéines cellulaires régulées par le virus de l'hépatite B
au cours du temps
Quantitative and temporal analysis of cellular proteins regulated by hepatitis B
virus in primary human hepatocytes
Département (cocher le département correspondant au sujet de thèse qui n’est pas obligatoirement le
vôtre) :




Biologie Cellulaire et moléculaire, Physiologie et Physiopathologie
Immunologie
Développement Génétique Neurobiologie et Vieillissement
Infectiologie, Microbiologie
Summary (5 lines maximum) :
Hepatitis B virus (HBV) is one of the most important carcinogenic agents for human and chronic HBV
carriers are at a 100-fold higher risk for developing hepatocellular carcinoma (HCC). Current treatments
for chronic hepatitis B control cannot clear the virus implying a lifelong treatment of patients. There is
thus an urgent need to understand mechanisms of HBV persistence. Using a multiplex proteomic
approach we will identify cellular antiviral factors and study mechanisms of HBV evasion.
Proposition de sujet de thèse à l’appui d’une demande de contrat doctoral 2017-2087
Nom, prénom du directeur de l'unité de recherche :Eliane Meurs
Numéro de l'unité de recherche (et établissement de rattachement) : Institut Pasteur
Nom, prénom du responsable de l'équipe d'accueil (EAD) :Christine Neuveut
Nom, prénom du directeur de thèse : Christine Neuveut
Titre du sujet de thèse proposé : Quantitative and temporal analysis of cellular proteins regulated by
hepatitis B virus in primary human hepatocytes
Citer 5 mots clés : hepatitis B virus, viral escape, restriction factor, quantitative proteomic, virushost interaction
(key words)
Candidat pressenti :

OUI

NON
Contenu scientifique du programme de la thèse (en anglais)
Chronic hepatitis B (CHB) virus infection represents a major health problem with about 250 million of
chronically infected patients at high risk to develop severe liver diseases such as cirrhosis and
hepatocellular carcinoma. CHB represents an area of high unmet medical need since, while current
treatments control HBV infection and improve liver functions, they are unable to completely clear the
virus. Viral persistence is due to the maintenance, in the nuclei of infected cells, of the cccDNA that is
not targeted by the antiviral treatment and to the impairment of both the innate and adaptive immune
responses that accompanies CHB infection. It is thus important to develop new drugs that could either
target directly the viral replication or improve the host antiviral response. The aim of this project is to gain
a comprehensive understanding of how HBV manipulates the host cell proteome during the course of
infection. We aimed at identifying antiviral factors and understanding the mechanism of viral escape.
Viral replication depends on a balance between factors that benefit and those that restrict viral
infection. Using a quantitative temporal viromics approach developed by P. Lenher in Cambridge, we will
perform a quantitative analysis of temporal changes in host and viral proteins in primary human
hepatocytes through the course of HBV infection. We will in particular search for cellular factors involved
in virus restriction and thus focus our analysis on cellular proteins downregulated by HBV that are likely
to represent antiviral factor. We will study the mechanism of viral escape. Finally, we will examine
whether the identified downregulated cellular proteins affect HBV virus replication, and determine the
targeted step of the viral replication.
Indiquez les cinq meilleures publications récentes de l’équipe :
-Altınel,*, K. Hashimoto1,*,Y. Wei, C. Neuveut, I. Gupta, A.M.Suzuki, A. Dos Santos4, P. Moreau, T.
Xia, SKojima, S. Kato; Y. Takikawa7, I Hidaka, M Shimizu, T Matsuura, A Tsubota, H Ikeda, S Nagoshi,
H Suzuki,M-L Michel, D Samuel,M A Buendia, J Faivre, & P Carninci (2016). Single-nucleotideresolution mapping 1 of HBV promoters in infected human livers and hepatocellular carcinoma. J Virol
Sep 28. pii: J. Virol .01625-16
-Rivière L., Gerossier L., Ducroux A., Dion S., Deng Q., Michel M.L. , Buendia M.A., Hantz O. and
Neuveut C. (2015). HBx relieves chromatin-mediated transcriptional repression of hepatitis B viral
cccDNA involving SETDB1 histone methyltransferase. J. Hepatol. doi: 10.1016/j.jhep.2015.06.023.
-Ducroux A, Benhenda S, Rivière L, Semmes OJ, Benkirane M, Neuveut C. (2014). The Tudor domain
protein Spindlin1 is involved in intrinsic antiviral defense against incoming hepatitis B Virus and herpes
simplex virus type 1. PloS Pathog. 10 : e1004343.
-Benhenda S., Ducroux A.,Rivière L., Sobhian B., Ward M., Dion S., Hantz O., Protzer U., Michel M.L.,
Benkirane M., Semmes O.J., Marie-Annick Buendia M.A. and Neuveut C. (2013). The PRMT1
methyltransferase is a binding partner of HBx and a negative regulator of hepatitis B virus transcription.
J. Virol. : 87: 4360-4370.
-Cougot D., Allemand E., Rivière L., Benhenda S., Duroure K., Levillayer L., Muchard C.,
Buendia M.A. and Neuveut C. (2012). Inhibition of PP1 phosphatase activity by HBx: a new
mechanism for the activation of hepatitis B virus transcription. Sci. Signal.: Ra1.