@article{DeyAdamovskiFriebeetal.2014,
  author    = {Dey, Pradip and Adamovski, Miriam and Friebe, Simon and Badalyan, Artavazd and Mutihac, Radu-Cristian and Paulus, Florian and Leimk{\"u}hler, Silke and Wollenberger, Ursula and Haag, Rainer},
  title     = {Dendritic polyglycerol-poly(ethylene glycol)-based polymer networks for biosensing application},
  series = {ACS applied materials \& interfaces},
  volume    = {6},
  journal   = {ACS applied materials \& interfaces},
  number    = {12},
  publisher = {American Chemical Society},
  address   = {Washington},
  issn      = {1944-8244},
  doi       = {10.1021/am502018x},
  pages     = {8937 -- 8941},
  year      = {2014},
  abstract  = {This work describes the formation of a new dendritic polyglycerol-poly(ethylene glycol)-based 3D polymer network as a matrix for immobilization of the redox enzyme periplasmatic aldehyde oxidoreductase to create an electrochemical biosensor. The novel network is built directly on the gold surface, where it simultaneously stabilizes the enzyme for up to 4 days. The prepared biosensors can be used for amperometric detection of benzaldehyde in the range of 0.8-400 mu M.},
  language  = {en}
}
@article{DeyBergmannCuellarCamachoetal.2018,
  author    = {Dey, Pradip and Bergmann, Tobias and Cuellar-Camacho, Jose Luis and Ehrmann, Svenja and Chowdhury, Mohammad Suman and Zhang, Minze and Dahmani, Ismail and Haag, Rainer and Azad, Walid},
  title     = {Multivalent flexible nanogels exhibit broad-spectrum antiviral activity by blocking virus entry},
  series = {ACS nano},
  volume    = {12},
  journal   = {ACS nano},
  number    = {7},
  publisher = {American Chemical Society},
  address   = {Washington},
  issn      = {1936-0851},
  doi       = {10.1021/acsnano.8b01616},
  pages     = {6429 -- 6442},
  year      = {2018},
  abstract  = {The entry process of viruses into host cells is complex and involves stable but transient multivalent interactions with different cell surface receptors. The initial contact of several viruses begins with attachment to heparan sulfate (HS) proteoglycans on the cell surface, which results in a cascade of events that end up with virus entry. The development of antiviral agents based on multivalent interactions to shield virus particles and block initial interactions with cellular receptors has attracted attention in antiviral research. Here, we designed nanogels with different degrees of flexibility based on dendritic polyglycerol sulfate to mimic cellular HS. The designed nanogels are nontoxic and broad-spectrum, can multivalently interact with viral glycoproteins, shield virus surfaces, and efficiently block infection. We also visualized virus-nanogel interactions as well as the uptake of nanogels by the cells through clathrin-mediated endocytosis using confocal microscopy. As many human viruses attach to the cells through HS moieties, we introduce our flexible nanogels as robust inhibitors for these viruses.},
  language  = {en}
}
@article{ZabihiGraffSchumacheretal.2018,
  author    = {Zabihi, Fatemeh and Graff, Patrick and Schumacher, Fabian and Kleuser, Burkhard and Hedtrich, Sarah and Haag, Rainer},
  title     = {Synthesis of poly(lactide-co-glycerol) as a biodegradable and biocompatible polymer with high loading capacity for dermal drug delivery},
  series = {Nanoscale},
  volume    = {10},
  journal   = {Nanoscale},
  number    = {35},
  publisher = {Royal Society of Chemistry},
  address   = {Cambridge},
  issn      = {2040-3364},
  doi       = {10.1039/c8nr05536j},
  pages     = {16848 -- 16856},
  year      = {2018},
  abstract  = {Due to the low cutaneous bioavailability of tacrolimus (TAC), penetration enhancers are used to improve its penetration into the skin. However, poor loading capacity, non-biodegradability, toxicity, and in some cases inefficient skin penetration are challenging issues that hamper their applications for the dermal TAC delivery. Here we present poly(lactide-co-glycerol) (PLG) as a water soluble, biodegradable, and biocompatible TAC-carrier with high loading capacity (14.5\% w/w for TAC) and high drug delivery efficiencies into the skin. PLG was synthesized by cationic ring-opening copolymerization of a mixture of glycidol and lactide and showed 35 nm and 300 nm average sizes in aqueous solutions before and after loading of TAC, respectively. Delivery experiments on human skin, quantified by fluorescence microscopy and LC-MS/MS, showed a high ability for PLG to deposit Nile red and TAC into the stratum corneum and viable epidermis of skin in comparison with Protopic (R) (0.03\% w/w, TAC ointment). The cutaneous distribution profile of delivered TAC proved that 80\%, 16\%, and 4\% of the cutaneous drug level was deposited in the stratum corneum, viable epidermis, and upper dermis, respectively. TAC delivered by PLG was able to efficiently decrease the IL-2 and TSLP expressions in human skin models. Taking advantage of the excellent physicochemical and biological properties of PLG, it can be used for efficient dermal TAC delivery and potential treatment of inflammatory skin diseases.},
  language  = {en}
}