Theileria parva antigens recognized by cytotoxic T lymphocytes (CTLs) are prime vaccine candidates against East Coast Fever in cattle. A strategy for enhancing induction of parasite-specific T cell responses by increasing recruitment and activation of dendritic cells (DCs) at the immunization sit...
Mwangi, D.M.
,
Honda, Y.
,
Graham, S.P.
,
Pelle, Roger
,
Taracha, E.L.N.
,
Gachanja, J.
,
Nyanjui, J.K.
,
Bray, J.
,
Palmer, G.H.
,
Brown, W.C.
,
Mwangi, W.
,
[Treatment of cattle with DNA-encoded Flt3L and GM-CSF prior to immunization with Theileria parva candidate vaccine antigens induces CD4 and CD8 T cell IFN-γ responses but not CTL responses]
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Treatment of cattle with DNA-encoded Flt3L and GM-CSF prior to immunization with Theileria parva candidate vaccine antigens induces CD4 and CD8 T cell IFN-γ responses but not CTL responses
The protozoan parasite Theileria parva infects and transforms bovine lymphocytes, giving rise to a fatal lympho-proliferative condition known as East Coast fever. Although immune cattle mount strong cytolytic T. lymphocyte responses to the parasite, naive animals appear unable to respond and deve...
McKeever, Declan J.
,
Nyanjui, J.K.
,
Ballingall, K.T.
,
[In vitro infection with Theileria parva is associated with IL10 expression in all bovine lymphocyte lineages]
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In vitro infection with Theileria parva is associated with IL10 expression in all bovine lymphocyte lineages
There is growing evidence that immunity of cattle to Cowdria ruminantium infection is mediated by T lymphocytes. C. ruminantium antigens that stimulate these responses are therefore of considerable importance to the development of a sub-unit vaccine against the disease. We have examined T cell re...
Mwangi, D.M.
,
McKeever, Declan J.
,
Nyanjui, J.K.
,
Barbet, A.F.
,
Mahan, S.M.
,
[Immunisation of cattle against heartwater by infection with Cowdria ruminantium elicits T lymphocytes that recognise major antigenic proteins 1 and 2 of the agent]
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Immunisation of cattle against heartwater by infection with Cowdria ruminantium elicits T lymphocytes that recognise major antigenic proteins 1 and 2 of the agent
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, Elias
,
Ngugi, 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]
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Immunostimulatory CpG oligodeoxynucleotides enhance the induction of bovine CD4+ cytotoxic T-lymphocyte responses against the polymorphic immunodominant molecule of the protozoan parasite Theileria parva
Theileria parva, a tick-transmitted protozoan parasite related to Plasmodium spp., causes the disease East Coast fever, an acute and usually fatal lymphoproliferative disorder of cattle in Africa. Previous studies using sera from cattle that have survived infection identified a polymorphic immuno...
Toye, Philip G.
,
Metzelaar, M.J.
,
Wijngaard, P.L.J.
,
Nene, Vishvanath
,
Iams, K.P.
,
Roose, J.
,
Nyanjui, J.K.
,
Gobright, E.I.
,
Musoke, A.J.
,
Clevers, H.C.
,
[Characterization of the gene encoding the polymorphic immunodominant molecule, a neutralizing antigen of Theileria parva]
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Characterization of the gene encoding the polymorphic immunodominant molecule, a neutralizing antigen of Theileria parva
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]
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Immunization of cattle by infection with Cowdria ruminantium elicits T lymphocytes that recognize autologous, infected endothelial cells and monocytes
Heartwater (cowdriosis) is an infectious disease of domestic ruminants in Africa and the Carribean and is caused by a tick-borne intracellular rickettsial agent, Cowdria ruminantium. There is growing evidence that immunity of cattle to the disease is medicated by T. lymphocytes. Antigens that sti...
Mwangi, D.M.
,
McKeever, Declan J.
,
Nyanjui, J.K.
,
Barbet, A.F.
,
Mahan, S.M.
,
[Major antigenic proteins 1 and 2 of Cowdria ruminantium are targets for T-lymphocyte responses of immune cattle]
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Major antigenic proteins 1 and 2 of Cowdria ruminantium are targets for T-lymphocyte responses of immune cattle
Immunity against the bovine intracellular protozoan parasite Theileria parva has been shown to be mediated by CD8 T cells. Six antigens targeted by CD8 T cells from T. parva-immune cattle of different major histocompatibility complex (MHC) genotypes have been identified, raising the prospect of d...
Graham, S.P.
,
Pelle, Roger
,
Yamage, M.
,
Mwangi, D.M.
,
Honda, Y.
,
Mwakubambanya, R.S.
,
Villiers, Etienne P. de
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Abuya, E.
,
Awino, Elias
,
Gachanja, J.
,
Mbwika, F.
,
Muthiani, A.M.
,
Muriuki, C.
,
Nyanjui, J.K.
,
[Characterization of the fine specificity of Bovine CD8 T-Cell responses to defined antigens from the protozoan parasite Theileria parva]
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Characterization of the fine specificity of Bovine CD8 T-Cell responses to defined antigens from the protozoan parasite Theileria parva