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Goddeeris, B.M.Morrison, W. IvanTaracha, E.L.N.McKeever, Declan J.[East Coast Fever (Theileria parva). Cell-mediated immunity and protection]East Coast Fever (Theileria parva). Cell-mediated immunity and protection

East Coast fever (ECF) is a highly fatal lymphoproliferative disease of cattle caused by Theileria parva, a tick-borne intracellular apicomplexan parasite. Parasite antigens that are targets of protective cytotoxic T lymphocyte (CTL) responses are required to formulate a sub-unit vaccine against ...


Akoolo, L.Pelle, RogerSaya, R.Awino, EliasNyanjui, J.Taracha, E.L.N.Kanyari, P.Mwangi, D.M.Graham, S.P.[Evaluation of the recognition of Theileria parva vaccine candidate antigens by cytotoxic T lymphocytes from Zebu cattle]Evaluation of the recognition of Theileria parva vaccine candidate antigens by cytotoxic T lymphocytes from Zebu cattle

Immunity against the bovine intracellular protozoan parasite Theileria parva has been shown to be mediated through the destruction of parasite infected lymphocytes by MHC class I restricted CD8+ CTL. Six parasite proteins targeted by CTL from T. parva immune cattle have been identified and raised...


Graham, S.P.Pelle, RogerVilliers, Etienne P. deYamage, M.Mwangi, D.M.Honda, Y.Ellis, S.A.MacHugh, Niall D.Morrison, W. IvanTaracha, E.L.N.[Identification of bovine cytotoxic T lymphocyte epitopes on the intracellular parasite Theileria Parva]Identification of bovine cytotoxic T lymphocyte epitopes on the intracellular parasite Theileria Parva

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, RogerTaracha, 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]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 presence of the schizont stage of the obligate intracellular parasites Theileria parva or T. annulata in the cytoplasm of an infected leukocyte results in host cell transformation via a mechanism that has not yet been elucidated. Proteins, secreted by the schizont, or expressed on its surface...


Casanova, C.L.Xue, G.Taracha, E.L.N.Dobbelaere, D.A.E.[Post-translational signal peptide cleavage controls differential epitope recognition in the QP-rich domain of recombinant Theileria parva PIM]Post-translational signal peptide cleavage controls differential epitope recognition in the QP-rich domain of recombinant Theileria parva PIM

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

Theileria parva is an intracellular sporozoan parasite that infects and transforms bovine lymphocytes, causing a severe lymphoproliferative disease known as East Coast fever in eastern, central and southern Africa. In this article, Declan McKeever and colleagues summarize the current understandin...


McKeever, Declan J.Taracha, E.L.N.Morrison, W. IvanMusoke, A.J.Morzaria, S.P.[Protective immune mechanisms against Theileria parva: Evolution of vaccine development strategies]Protective immune mechanisms against Theileria parva: Evolution of vaccine development strategies

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
Gardner, M.J.Bishop, Richard P.Shah, TushaarVilliers, Etienne P. deCarlton, J.M.Hall, N.Ren, Q.Paulsen, I.T.Pain, A.Berriman, M.Wilson, R.J.M.Sato, S.Ralph, S.A.Mann, D.J.Xiong, Z.Shallom, S.J.Weidman, J.Jiang, L.Lynn,, J.Weaver, B.Shoaibi, A.Domingo, A.R.Wasawo, D.Crabtree, J.Wortman, J.R.Haas, B.Angiuoli, S.V.Creasy, T.H.Lu, C.Suh, B.Silva, J.C.Utterback, T.R.Feldblyum, T.V.Pertea, M.Allen, J.Nierman, W.C.Taracha, E.L.N.Salzberg, S.L.White, O.R.Fitzhugh, H.A.Morzaria, S.P.Venter, J. CraigFraser, C.M.Nene, Vishvanath[Genome sequence of Theileria parva, a bovine pathogen that transforms lymphocytes]Genome sequence of Theileria parva, a bovine pathogen that transforms lymphocytes

There is strong evidence that class I MHC-restricted parasite-specific CD8+ CTL protect cattle against the protozoan parasite Theileria parva. As part of an effort to develop a subunit vaccine for the induction of these responses, we have investigated the factors involved in the generation of T. ...


Taracha, E.L.N.Awino, EliasMcKeever, Declan J.[Distinct CD4 + T cell helper requirements in Theileria parva-immune and -naive bovine CTL precursors]Distinct CD4 + T cell helper requirements in Theileria parva-immune and -naive bovine CTL precursors

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