HTLV-1-infected thymic epithelial cells convey the virus to CD4 + T lymphocytes
Autor: | Maria Cristina M. Motta, Marcelo Ribeiro-Alves, Luciana Rodrigues Carvalho Barros, Leandra Linhares-Lacerda, Wilson Savino, Dumith Chequer Bou-Habib, Klaysa Moreira-Ramos |
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Rok vydání: | 2017 |
Předmět: |
0301 basic medicine
Chemokine viruses T cell Immunology Antigen presentation T-cell leukemia Virus 03 medical and health sciences Interleukin 21 0302 clinical medicine immune system diseases hemic and lymphatic diseases Tropical spastic paraparesis medicine Immunology and Allergy Cytotoxic T cell biology virus diseases Hematology medicine.disease Virology Molecular biology 030104 developmental biology medicine.anatomical_structure 030220 oncology & carcinogenesis biology.protein |
Zdroj: | Immunobiology. 222:1053-1063 |
ISSN: | 0171-2985 |
DOI: | 10.1016/j.imbio.2017.08.001 |
Popis: | The human T-lymphotropic virus type-1 (HTLV-1) is the causative agent of adult T cell leukemia/lymphoma (ATL) and HTLV-1 associated myelopathy/tropical spastic paraparesis (HAM/TSP). CD4+T cells are the main target of HTLV-1, but other cell types are known to be infected, including immature lymphocytes. Developing T cells undergo differentiation in the thymus, through migration and interaction with the thymic microenvironment, in particular with thymic epithelial cells (TEC) the major component of this three dimensional meshwork of non-lymphoid cells. Herein, we show that TEC express the receptors for HTLV-1 and can be infected by this virus through cell-cell contact and by cell-free virus suspensions. The expression of anti-apoptosis, chemokine and adhesion molecules genes are altered in HTLV-1-infected TEC, although gene expression of antigen presentation molecules remained unchanged. Furthermore, HTLV-1-infected TEC transmitted the virus to a CD4+ T cell line and to CD4+ T cells from healthy donors, during in vitro cellular co-cultures. Altogether, our data point to the possibility that the human thymic epithelial cells play a role in the establishment and progression of HTLV-1 infection, functioning as a reservoir and transmitting the virus to maturing CD4+ T lymphocytes, which in turn will cause disease in the periphery. |
Databáze: | OpenAIRE |
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