title: Potentiation of doxorubicin efficacy in hepatocellular carcinoma by the DNA repair inhibitor DT01 in preclinical models.
abstract: OBJECTIVE
  This study aimed to explore the antitumour effect of the DNA repair inhibitor, DT01 (the cholesterol conjugated form of Dbait), as an adjunct treatment to enhance the therapeutic efficacy of transarterial chemoembolization (TACE) in pre-clinical models of hepatocellular carcinoma (HCC).
  
  
  METHODS
  A rabbit model bearing liver tumours was either left untreated or treated with TACE or with a combination of TACE+DT01. Tumour growth was monitored by ultrasound. These results were further confirmed in mice grafted with an intrahepatic human HCC model treated with doxorubicin (DOX) alone or DOX+DT01.
  
  
  RESULTS
  The combination of DT01 with TACE in a rabbit liver model led to a significant decrease in tumour volume (p=0.03). Colour Doppler and immunohistochemical staining revealed a strong decrease in vascularization in the DT01+TACE-treated group preventing the tumour growth restart observed after TACE alone. Similarly, the DT01 combination with DOX led to significant anti-tumour efficacy compared to DOX alone (p=0.02) in the human HCC model. In addition, a significant decrease in vascularization in the group receiving combination DT01 and DOX treatment was observed.
  
  
  CONCLUSIONS
  DT01 is well tolerated and may potentiate HCC treatment by enhancing the DNA-damaging and anti-vascularization effect of TACE with doxorubicin.
  
  
  CONCLUSIONS
  • DT01 combined with TACE leads to significant anti-tumour efficacy without additional toxicity. • A potential anti-angiogenic role of DT01 was identified in preclinical models. • DT01 may potentiate HCC treatment by enhancing the efficacy of TACE.
authors.affiliation: DNA Therapeutics, Genopole, 4 rue Pierre, Fontaine, 91058, Evry cedex, France. Nirmitha.Herath@curie.fr.|Institut Curie, Centre de Recherche, Bat110, Centre Universitaire, 91405, Orsay, France. Nirmitha.Herath@curie.fr.
authors.forename: Nirmitha I
authors.initials: NI
authors.lastname: Herath
authors.affiliation: DNA Therapeutics, Genopole, 4 rue Pierre, Fontaine, 91058, Evry cedex, France.|Institut Curie, Centre de Recherche, Bat110, Centre Universitaire, 91405, Orsay, France.
authors.forename: Flavien
authors.initials: F
authors.lastname: Devun
authors.affiliation: DNA Therapeutics, Genopole, 4 rue Pierre, Fontaine, 91058, Evry cedex, France.|Institut Curie, Centre de Recherche, Bat110, Centre Universitaire, 91405, Orsay, France.
authors.forename: Aurélie
authors.initials: A
authors.lastname: Herbette
authors.affiliation: DNA Therapeutics, Genopole, 4 rue Pierre, Fontaine, 91058, Evry cedex, France.|Institut Curie, Centre de Recherche, Bat110, Centre Universitaire, 91405, Orsay, France.
authors.forename: Marie-Christine
authors.initials: MC
authors.lastname: Lienafa
authors.affiliation: Team Pathophysiology and Therapy of Chronic Viral Hepatitis, Inserm U955, Université Paris-Est, Créteil, France.
authors.forename: Philippe
authors.initials: P
authors.lastname: Chouteau
authors.affiliation: DNA Therapeutics, Genopole, 4 rue Pierre, Fontaine, 91058, Evry cedex, France.
authors.forename: Jian-Sheng
authors.initials: JS
authors.lastname: Sun
authors.affiliation: Institut Curie, Centre de Recherche, Bat110, Centre Universitaire, 91405, Orsay, France.|CNRS UMR3347, Bat110, Centre Universitaire, 91405, Orsay, France.|INSERM U1021, Bat110, Centre Universitaire, 91405, Orsay, France.
authors.forename: Marie
authors.initials: M
authors.lastname: Dutreix
authors.affiliation: Department of Radiology and Interventional Radiology, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland.
authors.forename: Alban
authors.initials: A
authors.lastname: Denys
mesh_terms: D000818:Animals; D000970:Antineoplastic Agents / Q000627:therapeutic use*; D006528:Carcinoma, Hepatocellular / Q000235:genetics / Q000628:therapy*; D016461:Chemoembolization, Therapeutic / Q000379:methods; D002784:Cholesterol / Q000031:analogs & derivatives* / Q000627:therapeutic use; D004247:DNA / Q000627:therapeutic use*; D004249:DNA Damage; D004260:DNA Repair / Q000187:drug effects*; D004195:Disease Models, Animal; D004317:Doxorubicin / Q000627:therapeutic use*; D006801:Humans; D008113:Liver Neoplasms / Q000235:genetics / Q000628:therapy*; D008297:Male; D011817:Rabbits; D016896:Treatment Outcome; D047368:Tumor Burden / Q000187:drug effects
chemical_list: D000970:Antineoplastic Agents; C000611563:DT01 compound; D004317:Doxorubicin; D004247:DNA; D002784:Cholesterol
keywords: Anti-angiogenic drug; Hepatocellular carcinoma; Liver; Therapeutic chemoembolization; VEGF receptor