CD4 T cells drive corneal nerve damage but not epitheliopathy in an acute aqueous-deficient dry eye model.
Alexia Vereertbrugghen, Manuela Pizzano, Agostina Cernutto, Florencia Sabbione, Irene A Keitelman, Douglas Vera Aguilar, Ariel Podhorzer, Federico Fuentes, Celia Corral-V��zquez, Mauricio Guzm��n, Mirta N Giordano, Anal��a Trevani, Cintia S de Paiva, Jerem��as G Galletti
Author Information
Alexia Vereertbrugghen: Innate Immunity Laboratory, Institute of Experimental Medicine (National Scientific and Technical Research Council/National Academy of Medicine of Buenos Aires), Buenos Aires 1425, Argentina. ORCID
Manuela Pizzano: Innate Immunity Laboratory, Institute of Experimental Medicine (National Scientific and Technical Research Council/National Academy of Medicine of Buenos Aires), Buenos Aires 1425, Argentina.
Agostina Cernutto: Innate Immunity Laboratory, Institute of Experimental Medicine (National Scientific and Technical Research Council/National Academy of Medicine of Buenos Aires), Buenos Aires 1425, Argentina.
Florencia Sabbione: Innate Immunity Laboratory, Institute of Experimental Medicine (National Scientific and Technical Research Council/National Academy of Medicine of Buenos Aires), Buenos Aires 1425, Argentina.
Irene A Keitelman: Innate Immunity Laboratory, Institute of Experimental Medicine (National Scientific and Technical Research Council/National Academy of Medicine of Buenos Aires), Buenos Aires 1425, Argentina.
Douglas Vera Aguilar: Innate Immunity Laboratory, Institute of Experimental Medicine (National Scientific and Technical Research Council/National Academy of Medicine of Buenos Aires), Buenos Aires 1425, Argentina.
Ariel Podhorzer: Flow Cytometry Unit, Institute of Experimental Medicine (National Scientific and Technical Research Council/National Academy of Medicine of Buenos Aires), Buenos Aires 1425, Argentina. ORCID
Federico Fuentes: Confocal Microscopy Unit, Institute of Experimental Medicine (National Scientific and Technical Research Council/National Academy of Medicine of Buenos Aires), Buenos Aires 1425, Argentina.
Celia Corral-V��zquez: Translational Clinical Research Program, Hospital del Mar Research Institute, Barcelona 08003, Spain.
Mauricio Guzm��n: Translational Clinical Research Program, Hospital del Mar Research Institute, Barcelona 08003, Spain. ORCID
Mirta N Giordano: Innate Immunity Laboratory, Institute of Experimental Medicine (National Scientific and Technical Research Council/National Academy of Medicine of Buenos Aires), Buenos Aires 1425, Argentina.
Anal��a Trevani: Innate Immunity Laboratory, Institute of Experimental Medicine (National Scientific and Technical Research Council/National Academy of Medicine of Buenos Aires), Buenos Aires 1425, Argentina.
Cintia S de Paiva: Ocular Surface Center, Baylor College of Medicine, Houston, TX 77030. ORCID
Jerem��as G Galletti: Innate Immunity Laboratory, Institute of Experimental Medicine (National Scientific and Technical Research Council/National Academy of Medicine of Buenos Aires), Buenos Aires 1425, Argentina. ORCID
Dry eye disease (DED) is characterized by a dysfunctional tear film in which the corneal epithelium and its abundant nerves are affected by ocular desiccation and inflammation. Although adaptive immunity and specifically CD4 T cells play a role in DED pathogenesis, the exact contribution of these cells to corneal epithelial and neural damage remains undetermined. To address this, we explored the progression of a surgical DED model in wild-type (WT) and T cell-deficient mice. We observed that adaptive immune-deficient mice developed all aspects of DED comparably to WT mice except for the absence of functional and morphological corneal nerve changes, nerve damage-associated transcriptomic signature in the trigeminal ganglia, and sustained tear cytokine levels. Adoptive transfer of CD4 T cells from WT DED mice to T cell-deficient mice reproduced corneal nerve damage but not epitheliopathy. Conversely, T cell-deficient mice reconstituted solely with na��ve CD4 T cells developed corneal nerve impairment and epitheliopathy upon DED induction, thus replicating the WT DED phenotype. Collectively, our data show that while corneal neuropathy is driven by CD4 T cells in DED, corneal epithelial damage develops independently of the adaptive immune response. These findings have implications for T cell-targeting therapies currently in use for DED.
PICT 2018-02911 PICT 2020-00138 PICT 2021-00109/Agencia Nacional de Promoci��n de la Investigaci��n, el Desarrollo Tecnol��gico y la Innovaci��n (Agencia I + D + i)