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Theileria parva causes an acute fatal disease in cattle, but infections are asymptomatic in the African buffalo (Syncerus caffer). Cattle can be immunized against the parasite by infection and treatment, but immunity is partially strain specific. Available data indicate that CD8+ T lymphocyte res...


Pelle, RogerGraham, S.P.Njahira, Moses N.Osaso, J.Saya, R.M.Odongo, David O.Toye, Philip G.Spooner, P.R.Musoke, A.J.Mwangi, D.M.Taracha, E.L.N.Morrison, W. IvanWeir, W.Silva, J.Bishop, Richard P.[Two Theileria parva CD8 T Cell Antigen genes are more variable in buffalo than cattle parasites, but differ in pattern of sequence diversity]Two Theileria parva CD8 T Cell Antigen genes are more variable in buffalo than cattle parasites, but differ in pattern of sequence diversity

To evaluate vaccinia virus as a delivery system for recombinant antigen in cattle, calves were immunized with a recombinant vaccinia virus (rVV) expressing the sporozoite surface antigen (p67) of Theileria parva (V-67) combined with those expressing bovine IL-4 (V-IL4) or IL-2 (V-IL2). The anti-p...


Honda, Y.Waithaka, M.M.Taracha, E.L.N.Duchateau, L.Musoke, A.J.McKeever, Declan J.[Delivery of the Theileria parva p67 antigen to cattle using recombinant vaccinia virus: IL-2 enhances protection]Delivery of the Theileria parva p67 antigen to cattle using recombinant vaccinia virus: IL-2 enhances protection

Enhancement of the induction of cytotoxic T-cell responses by immunostimulatory CpG oligodeoxynucleotides has been described in humans and mouse models. The present study attempted to address whether CpG has a similar effect in cattle. Immunisation of cattle with a recombinant form of the polymor...


Graham, S.P.Saya, R.Awino, EliasNgugi, D.Nyanjui, J.K.Hecker, R.Taracha, E.L.N.Nene, Vishvanath[Immunostimulatory CpG oligodeoxynucleotides enhance the induction of bovine CD4+ cytotoxic T-lymphocyte responses against the polymorphic immunodominant molecule of the protozoan parasite Theileria parva]Immunostimulatory CpG oligodeoxynucleotides enhance the induction of bovine CD4+ cytotoxic T-lymphocyte responses against the polymorphic immunodominant molecule of the protozoan parasite Theileria parva

We describe a highly sensitive, non-radioactive assay for T cell activation, based on the rapid induction of class II MHC expression by constitutively negative bovine endothelial cells, when cultured in the presence of supernatants derived from activated bovine T cells. We demonstrate the effecti...


Ballingall, K.T.Mwangi, D.M.MacHugh, Niall D.Taracha, E.L.N.Totte, P.McKeever, Declan J.[A highly sensitive, non-radioactive assay for T cell activation in cattle: Applications in screening for antigens recognised by CD4+ and CD8+ T cells]A highly sensitive, non-radioactive assay for T cell activation in cattle: Applications in screening for antigens recognised by CD4+ and CD8+ T cells

Peripheral blood mononuclear cells (PBMC) from immune cattle proliferate in the presence of autologous Cowdria ruminantium-infected endothelial cells and monocytes. Endothelial cells required treatment with T-cell growth factors to induce class II major histocompatibility complex expression prior...


Mwangi, D.M.Mahan, S.M.Nyanjui, J.K.Taracha, E.L.N.McKeever, Declan J.[Immunization of cattle by infection with Cowdria ruminantium elicits T lymphocytes that recognize autologous, infected endothelial cells and monocytes]Immunization of cattle by infection with Cowdria ruminantium elicits T lymphocytes that recognize autologous, infected endothelial cells and monocytes

The relationship of strain specificity of class I major histocompatibility complex-restricted parasite-specific cytotoxic T lymphocytes (CTL) responses and cross-protection was investigated in an effort to verify the role of CTL in protection. The parasite strain specificity of the CTL responses ...


Taracha, E.L.N.Goddeeris, B.M.Morzaria, S.P.Morrison, W. Ivan[Parasite strain specificity of precursor cytotoxic T cells in individual animals correlates with cross-protection in cattle challenged with Theileria parva]Parasite strain specificity of precursor cytotoxic T cells in individual animals correlates with cross-protection in cattle challenged with Theileria parva

Heterologous priming-boosting vaccination regimens involving priming with plasmid DNA antigen constructs and inoculating (boosting) with the same recombinant antigen expressed in replication-attenuated poxviruses have recently been demonstrated to induce immunity, based on CD4(+)- and CD8(+)-T-c...


Taracha, E.L.N.Bishop, Richard P.Musoke, A.J.Hill, A.V.S.Gilbert, S.C.[Heterologous priming-boosting immunization of cattle with Mycobacterium tuberculosis 85A induces antigen-specific T-cell responses]Heterologous priming-boosting immunization of cattle with Mycobacterium tuberculosis 85A induces antigen-specific T-cell responses

Theileria parva causes an acute lympho-proliferative disease in cattle, which can result in death of susceptible animals within 2-3 weeks of infection. Analyses of the cellular response in the lymph node draining the site of infection demonstrated an early T cell response, with the appearance of ...


Houston, E.F.Taracha, E.L.N.Brackenbury, L.MacHugh, Niall D.McKeever, Declan J.Charleston, B.Morrison, W. Ivan[Infection of cattle with Theileria parva induces an early CD8 T cell response lacking appropriate effector function]Infection of cattle with Theileria parva induces an early CD8 T cell response lacking appropriate effector function

The parasite strain specificity of CTL responses to Theileria parva varies among cattle immunized with the same parasite stock. We have investigated the influence of class I MHC on the strain specificity of CTL responses to T. parva in 19 cattle of defined class I phenotype immunized with either ...


Taracha, E.L.N.Goddeeris, B.M.Teale, A.J.Kemp, Stephen J.Morrison, W. Ivan[Parasite strain specificity of bovine cytotoxic T cell responses to Theileria parva is determined primarily by immunodominance]Parasite strain specificity of bovine cytotoxic T cell responses to Theileria parva is determined primarily by immunodominance

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