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Mimicry Epitope From Ehrlichia Canis For Interphotoreceptor Retinoid-Binding Protein 201–216 Prevents Autoimmune Uveoretinitis By Acting As Altered Peptide Ligand, Arunakumar Gangaplara, Chandirasegaran Massilamany, David Steffen, Jay Reddy
Mimicry Epitope From Ehrlichia Canis For Interphotoreceptor Retinoid-Binding Protein 201–216 Prevents Autoimmune Uveoretinitis By Acting As Altered Peptide Ligand, Arunakumar Gangaplara, Chandirasegaran Massilamany, David Steffen, Jay Reddy
Jay Reddy Publications
We report here identification of novel mimicry epitopes for interphotoreceptor retinoid-binding protein (IRBP) 201–216, a candidate ocular antigen that causes experimental autoimmune uveoretinitis (EAU) in A/J mice. One mimicry epitope from Ehrlichia canis (EHC), designated EHC 44–59, induced cross-reactive T cells for IRBP 201–216 capable of producing T helper (Th)1 and Th17 cytokines, but failed to induce EAU in A/J mice. In addition, animals first primed with suboptimal doses of IRBP 201–216 and subsequently immunized with EHC 44–59 did not develop EAU; rather, the mimicry epitope prevented the disease induced by IRBP 201–216. However, alteration in the composition of EHC …
Gender Differences In Cns Autoimmunity Induced By Mimicry Epitope For Plp 139–151 In Sjl Mice, Chandirasegara Massilamany, Sivasubramani Thulasingam, David Steffen, Jay Reddy
Gender Differences In Cns Autoimmunity Induced By Mimicry Epitope For Plp 139–151 In Sjl Mice, Chandirasegara Massilamany, Sivasubramani Thulasingam, David Steffen, Jay Reddy
Jay Reddy Publications
Development of multiple sclerosis (MS) is more prevalent in females than in males, but the underlying mechanisms are not clear. Microbial infections have been suspected as triggers of MS and it is not known whether gender differences in reactivity to environmental antigens contribute to the disease pathogenesis. We demonstrated that ACA 83–95, a mimicry epitope from Acanthamoeba castellanii for proteolipid protein (PLP) 139–151, induces clinical signs of encephalomyelitis in both male and female SJL mice. Conversely ACA 83–95-induced effector cells from males fail to induce disease in female mice. Although we found no gender differences in the frequencies of antigen-specific …