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Interactomic inhibition of Eomes in the nucleus alleviates EAE via blocking the conversion of Th17 cells into

Bo-Young Shin1, Su-Hyeon Lee1, Yuna Kim1

  • 1Department of Biotechnology, Yonsei University College of Life Science and Biotechnology, Seoul, Republic of Korea.

Immunological Medicine
|February 7, 2022
PubMed

Th17 cells are implicated in the pathogenesis of several autoimmune diseases. During the inflammation, Th17 cells exposed to IL-12 can shift towards the Th1 phenotype. These shifted cells are defined as 'non-classic Th1 cells'. Th17-derived non-classic Th1 cells play a critical role in late-onset chronic inflammatory diseases and are more pathogenic than the unshifted Th17 cells. Eomes is a transcription factor highly expressed in non-classic Th1 cells. To study the functional role of Eomes without genetic alteration, novel recombinant protein, ntEomes-TMD, was generated by fusing TMD of Eomes and Hph-1-PTD that facilitate intracellular delivery of its cargo molecule. ntEomes-TMD was delivered into the nucleus of the cells without influencing the T cell activation and cytotoxicity. ntEomes-TMD specifically inhibited the Eomes- and ROR-γt-mediated transcription and suppressed the Th1 and Th17 differentiation. Interestingly, ntEomes-TMD blocked the generation of non-classic Th1 cells from Th17 cells, leading to the inhibition of IFN-γ and GM-CSF secretion. In EAE, ntEomes-TMD alleviated the symptoms of EAE, and the combination treatment using ntEomes-TMD and anti-IL-17 mAb together showed better therapeutic efficacy than anti-IL-17 mAb treatment. The results suggest that ntEomes-TMD can be a new therapeutic reagent for treating chronic inflammatory diseases associated with non-classic Th1 cells.

Keywords:
T-cell subset differentiationTh17experimental autoimmune encephalomyelitisintranuclear delivery of the proteinnon-classic Th1

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