@article{RauschenbergerSchmittAzeemetal.2019,
  author    = {Rauschenberger, Tabea and Schmitt, Viola and Azeem, Muhammad and Klein-Hessling, Stefan and Murti, Krisna and Gr{\"a}n, Franziska and Goebeler, Matthias and Kerstan, Andreas and Klein, Matthias and Bopp, Tobias and Serfling, Edgar and Muhammad, Khalid},
  title     = {T cells control chemokine secretion by keratinocytes},
  series = {Frontiers in Immunology},
  volume    = {10},
  journal   = {Frontiers in Immunology},
  number    = {1917},
  issn      = {1664-3224},
  doi       = {10.3389/fimmu.2019.01917},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-195695},
  year      = {2019},
  abstract  = {The massive infiltration of lymphocytes into the skin is a hallmark of numerous human skin disorders. By co-culturing murine keratinocytes with splenic T cells we demonstrate here that T cells affect and control the synthesis and secretion of chemokines by keratinocytes. While pre-activated CD8\(^+\)T cells induce the synthesis of CXCL9 and CXCL10 in keratinocytes and keep in check the synthesis of CXCL1, CXCL5, and CCL20, keratinocytes dampen the synthesis of CCL3 and CCL4 in pre-activated CD8\(^+\)T cells. One key molecule is IFN-γ that is synthesized by CD8\(^+\)T cells under the control of NFATc1 and NFATc2. CD8\(^+\)T cells deficient for both NFAT factors are unable to induce CXCL9 and CXCL10 expression. In addition, CD8\(^+\)T cells induced numerous type I IFN-inducible "defense genes" in keratinocytes encoding the PD1 and CD40 ligands, TNF-α and caspase-1. The enhanced expression of type I IFN-inducible genes resembles the gene expression pattern at the dermal/epidermal interface in lichen planus, an inflammatory T lymphocyte-driven skin disease, in which we detected the expression of CXCL10 in keratinocytes in close vicinity to the infiltration front of T cells. These data reflect the multifaceted interplay of lymphocytes with keratinocytes at the molecular level.},
  language  = {en}
}
@article{MurtiFenderGlatzleetal.2023,
  author    = {Murti, Krisna and Fender, Hendrik and Glatzle, Carolin and Wismer, Rhoda and Sampere-Birlanga, Salvador and Wild, Vanessa and Muhammad, Khalid and Rosenwald, Andreas and Serfling, Edgar and Avots, Andris},
  title     = {Calcineurin-independent NFATc1 signaling is essential for survival of Burkitt lymphoma cells},
  series = {Frontiers in Oncology},
  volume    = {13},
  journal   = {Frontiers in Oncology},
  doi       = {10.3389/fonc.2023.1205788},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-323103},
  year      = {2023},
  abstract  = {In Burkitt lymphoma (BL), a tumor of germinal center B cells, the pro-apoptotic properties of MYC are controlled by tonic B cell receptor (BCR) signals. Since BL cells do not exhibit constitutive NF-κB activity, we hypothesized that anti-apoptotic NFATc1 proteins provide a major transcriptional survival signal in BL. Here we show that post-transcriptional mechanisms are responsible for the calcineurin (CN) independent constitutive nuclear over-expression of NFATc1 in BL and Eµ-MYC - induced B cell lymphomas (BCL). Conditional inactivation of the Nfatc1 gene in B cells of Eµ-MYC mice leads to apoptosis of BCL cells in vivo and ex vivo. Inhibition of BCR/SYK/BTK/PI3K signals in BL cells results in cytosolic re-location of NFATc1 and apoptosis. Therefore, NFATc1 activity is an integrated part of tonic BCR signaling and an alternative target for therapeutic intervention in BL.},
  language  = {en}
}