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Faculté Universitaire des Sciences Agronomiques at a glance

The National Fund for Scientific Research (FNRS) promotes basic research in many different fields of science, among which molecular and cellular biology. Researchers from the FNRS are working in different universities in Belgium. The Faculté Universitaire des Sciences Agronomiques is a state university that is specialized in bioengineering. The scientific focus of the Molecular and Cellular Biology laboratory is understanding the mechanisms of cancer.

Our contribution to INCA

Chromatin acetylation and DNA methylation may play a role in maintaining viral latent persistence of the oncogenic retroviruses like HTLV-1 (Human T-lymphotropic virus type 1) and the related bovine leukemia virus (BLV). Treatment of BLV-infected sheep with the HDAC inhibitor valproate provokes a rapid disappearance of tumours. In this context, the aims of the project are (1) to study the mechanisms of chromatin-modifying agents on BLV – induced lymphoma in sheep and (2) to explore if these inhibitors could also be used in HTLV-1 infected people. The strategy is to interfere with latent persistence and to tilt the host-pathogen balance in favour of an existing antiviral T cell response or of mechanisms of intracellular antiviral surveillance

Reference publications

  • Debacq C, Gillet N, Asquith B et al. Peripheral blood B-cell death compensates for excessive proliferation in lymphoid tissues and maintains homeostasis in bovine leukemia virus-infected sheep. J Virol. 2006;80:9710-9719.
  • Debacq C, Heraud JM, Asquith B et al. Reduced cell turnover in lymphocytic monkeys infected by human T-lymphotropic virus type 1. Oncogene. 2005;24:7514-7523.
  • Achachi A, Florins A, Gillet N et al. Valproate activates bovine leukemia virus gene expression, triggers apoptosis, and induces leukemia/lymphoma regression in vivo. Proc Natl Acad Sci U S A. 2005;102:10309-10314.
  • Debacq C, Sanchez Alcaraz MT, Mortreux F et al. Reduced proviral loads during primo-infection of sheep by Bovine Leukemia virus attenuated mutants. Retrovirology. 2004;1:31.
  • Sanchez AT, Kerkhofs P, Reichert M, Kettmann R, Willems L. Involvement of glutathione as a mechanism of indirect protection against spontaneous ex vivo apoptosis associated with bovine leukemia virus. J Virol. 2004;78:6180-6189.
  • Debacq C, Asquith B, Reichert M et al. Reduced cell turnover in bovine leukemia virus-infected, persistently lymphocytotic cattle. J Virol. 2003;77:13073-13083.
  • Twizere JC, Kruys V, Lefebvre L et al. Interaction of retroviral Tax oncoproteins with tristetraprolin and regulation of tumor necrosis factor-alpha expression. J Natl Cancer Inst. 2003;95:1846-1859.
  • Debacq C, Asquith B, Kerkhofs P et al. Increased cell proliferation, but not reduced cell death, induces lymphocytosis in bovine leukemia virus-infected sheep. Proc Natl Acad Sci U S A. 2002;99:10048-10053.

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