@article{KimMcDonaghDengetal.2019,
  author    = {Kim, Brandon J. and McDonagh, Maura A. and Deng, Liwen and Gastfriend, Benjamin D. and Schubert-Unkmeir, Alexandra and Doran, Kelly S. and Shusta, Eric V.},
  title     = {Streptococcus agalactiae disrupts P-glycoprotein function in brain endothelial cells},
  series = {Fluids and Barriers of the CNS},
  volume    = {16},
  journal   = {Fluids and Barriers of the CNS},
  doi       = {10.1186/s12987-019-0146-5},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-201895},
  pages     = {26},
  year      = {2019},
  abstract  = {Bacterial meningitis is a serious life threatening infection of the CNS. To cause meningitis, blood-borne bacteria need to interact with and penetrate brain endothelial cells (BECs) that comprise the blood-brain barrier. BECs help maintain brain homeostasis and they possess an array of efflux transporters, such as P-glycoprotein (P-gp), that function to efflux potentially harmful compounds from the CNS back into the circulation. Oftentimes, efflux also serves to limit the brain uptake of therapeutic drugs, representing a major hurdle for CNS drug delivery. During meningitis, BEC barrier integrity is compromised; however, little is known about efflux transport perturbations during infection. Thus, understanding the impact of bacterial infection on P-gp function would be important for potential routes of therapeutic intervention. To this end, the meningeal bacterial pathogen, Streptococcus agalactiae, was found to inhibit P-gp activity in human induced pluripotent stem cell-derived BECs, and live bacteria were required for the observed inhibition. This observation was correlated to decreased P-gp expression both in vitro and during infection in vivo using a mouse model of bacterial meningitis. Given the impact of bacterial interactions on P-gp function, it will be important to incorporate these findings into analyses of drug delivery paradigms for bacterial infections of the CNS.},
  language  = {en}
}
@article{ShityakovBroscheitFoerster2013,
  author    = {Shityakov, Sergey and Broscheit, Jens and F{\"o}rster, Carola},
  title     = {Multidrug resistance protein P-gp interaction with nanoparticles (fullerenes and carbon nanotube) to assess their drug delivery potential: a theoretical molecular docking study.},
  series = {International journal of computational biology and drug design},
  volume    = {6},
  journal   = {International journal of computational biology and drug design},
  number    = {4},
  doi       = {10.1504/IJCBDD.2013.056801},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-132089},
  pages     = {343-357},
  year      = {2013},
  abstract  = {P-glycoprotein (P-gp)-mediated efflux system plays an important role to maintain chemical balance in mammalian cells for endogenous and exogenous chemical compounds. However, despite the extensive characterisation of P-gp potential interaction with drug-like molecules, the interaction of carbon nanoparticles with this type of protein molecule is poorly understood. Thus, carbon nanoparticles were analysed, such as buckminsterfullerenes (C20, C60, C70), capped armchair single-walled carbon nanotube (SWCNT or C168), and P-gp interactions using different molecular docking techniques, such as gradient optimisation algorithm (ADVina), Lamarckian genetic algorithm (FastDock), and shape-based approach (PatchDock) to estimate the binding affinities between these structures. The theoretical results represented in this work show that fullerenes might be P-gp binders because of low levels of Gibbs free energy of binding (ΔG) and potential of mean force (PMF) values. Furthermore, the SWCNT binding is energetically unfavourable, leading to a total decrease in binding affinity by elevation of the residual area (Ares), which also affects the π-π stacking mechanisms. Further, the obtained data could potentially call experimental studies using carbon nanostructures, such as SWCNT for development of drug delivery vehicles, to administer and assess drug-like chemical compounds to the target cells since organisms probably did not develop molecular sensing elements to detect these types of carbon molecules.},
  language  = {en}
}
@article{SchattonYangKleffeletal.2015,
  author    = {Schatton, Tobias and Yang, Jun and Kleffel, Sonja and Uehara, Mayuko and Barthel, Steven R. and Schlapbach, Christoph and Zhan, Qian and Dudeney, Stephen and Mueller, Hansgeorg and Lee, Nayoung and de Vries, Juliane C. and Meier, Barbara and Beken, Seppe Vander and Kluth, Mark A. and Ganss, Christoph and Sharpe, Arlene H. and Waaga-Gasser, Ana Maria and Sayegh, Mohamed H. and Abdi, Reza and Scharffetter-Kochanek, Karin and Murphy, George F. and Kupper, Thomas S. and Frank, Natasha Y. and Frank, Markus H.},
  title     = {ABCB5 Identifies Immunoregulatory Dermal Cells},
  series = {Cell Reports},
  volume    = {12},
  journal   = {Cell Reports},
  doi       = {10.1016/j.celrep.2015.08.010},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-149989},
  pages     = {1564 -- 1574},
  year      = {2015},
  abstract  = {Cell-based strategies represent a new frontier in the treatment of immune-mediated disorders. However, the paucity of markers for isolation of molecularly defined immunomodulatory cell populations poses a barrier to this field. Here, we show that ATP-binding cassette member B5 (ABCB5) identifies dermal immunoregulatory cells (DIRCs) capable of exerting therapeutic immunoregulatory functions through engagement of programmed cell death 1 (PD-1). Purified Abcb5\(^+\) DIRCs suppressed T cell proliferation, evaded immune rejection, homed to recipient immune tissues, and induced Tregs in vivo. In fully major-histocompatibility-complex-mismatched cardiac allotransplantation models, allogeneic DIRCs significantly prolonged allograft survival. Blockade of DIRC-expressed PD-1 reversed the inhibitory effects of DIRCs on T cell activation, inhibited DIRC-dependent Treg induction, and attenuated DIRC-induced prolongation of cardiac allograft survival, indicating that DIRC immunoregulatory function is mediated, at least in part, through PD-1. Our results identify ABCB5\(^+\) DIRCs as a distinct immunoregulatory cell population and suggest promising roles of this expandable cell subset in cellular immunotherapy.},
  language  = {en}
}