Tanja Werner

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Cytotoxic T cells (CTL) play a central role in the control of viral infections. Their antiviral activity can be mediated by at least two cytotoxic pathways, namely, the granule exocytosis pathway, involving perforin and granzymes, and the Fas-FasL pathway. However, the viral factor(s) that influences the selection of one or the other pathway for pathogen(More)
After more than 30 years of research a HIV vaccine is still not at hand. DNA vectors expressing viral antigens are very safe vaccines, but so far they have not been efficient enough to induced broad protective immunity against retroviruses. One strategy to enhance the efficiency of DNA vaccines is to augment effector T-cell priming against viral components(More)
Cytotoxic CD8+ T Lymphocytes (CTL) efficiently control acute virus infections but can become exhausted when a chronic infection develops. Signaling of the inhibitory receptor PD-1 is an important mechanism for the development of virus-specific CD8+ T cell dysfunction. However, it has recently been shown that during the initial phase of infection(More)
Cytotoxic CD8(+) T cells control acute viremia in many viral infections. However, most viruses that establish chronic infections evade destruction by CD8(+) T cells, and regulatory T cells (Treg) are thought to be involved in this immune evasion. We have infected transgenic mice, in which Treg can be selectively depleted, with Friend retrovirus (FV) to(More)
Triatomines inhibit the clotting of ingested blood in the stomach (anterior midgut). After verifying this phenomenon in Panstrongylus megistus using coagulation assays, a full-length cDNA encoding a Kazal-like inhibitor was amplified by PCR. The open reading frame encodes a putative precursor protein of 412 amino acid residues, which was named PmStKaz and(More)
The authors would like to correct panel H in Fig 3 to show the correct MFI values of PD-L1 expression on human CD4+ T cells. The error occurred during preparation of the figure for manuscript revision. The percentages of infected CD4 cells expressing PD-L1 were accidentally duplicated from panel I in Fig 3. Please see the corrected version of Fig 3 here.(More)
Cytotoxic T cells (CTL) play a central role in the control of viral infections. Their antiviral activity can be mediated by at least two cytotoxic pathways, namely the granule exocytosis pathway, involving perforin and granzymes, and the Fas-FasL pathway. It was shown that the level of Friend retrovirus (FV) replication determines the cytotoxic pathway for(More)
D I F F E R E N T I A T I O N SPECIFIC E X P R E S S I O N OF THE H U M A N E N D O G E N O U S R E T R O V I R U S ERV3 (HERV-R) A-C. Andersson ~ M. Merza ~ J. Botling ~ M. Cohen and E. Lar s son ~ ERV3 (HERV-R) is a complete h u m a n endogenous retrovirus located at chromosome 7 (7q). Earl ier s tudies revealed tha t HERV-R mRNAs of 9, 7.3 and 3.5 kb are(More)
Myeloid-derived suppressor cells (MDSCs) can suppress T cell responses in several different diseases. Previously these suppressive cells were observed to expand in HIV patients and in a mouse retrovirus model, yet their suppressive effect on virus-specific CD8+ T cells in vitro and in vivo has not been characterized thus far. We used the Friend retrovirus(More)
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