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  1. Recombinant plant-derived pharmaceutical proteins: current technical and economic bottlenecks.

    Biotechnology Letters 36(12):2367 (2014) PMID 25048244

    We discuss some of the technical, economic and regulatory barriers that constrain the clinical development and commercialization of plant-derived pharmaceutical proteins. We also discuss strategies to increase productivity and product quality/homogeneity. The advantages of whole plants should be wel...
  2. Hollow fibre membrane bioreactors for tissue engineering applications.

    Biotechnology Letters 36(12):2357 (2014) PMID 25064452

    Hollow fibre membrane bioreactors (HFB) provide a novel approach towards tissue engineering applications in the field of regenerative medicine. For adherent cell types, HFBs offer an in vivo-like microenvironment as each fibre replicates a blood capillary and the mass transfer rate across the wall i...
  3. Chemoselective acylation of (hydroxyalkyl)phenols catalyzed by Candida antarctica lipase B.

    Biotechnology Letters 35(4):625 (2013) PMID 23250446

    Acylation of (hydroxyalkyl)phenols with vinyl esters by lipase B from Candida antarctica proceeded smoothly in a highly chemoselective manner, affording their alkyl esters exclusively or at least predominantly. The enzyme therefore discriminates between an alcoholic hydroxyl from a phenolic hydroxyl...
  4. Biosynthesis of new lipopentapeptides by an engineered strain of Streptomyces sp.

    Biotechnology Letters 34(12):2283 (2012) PMID 22941370

    I signal peptidase inhibitors and have a potential as a new type of antibiotics. They were identified from the broth of Streptomyces sp. HCCB10043. The arylomycin biosynthetic gene cluster in this strain was identical to that in S. roseosporus. Within the gene cluster, aryC, encoding a P450 enzyme,...
  5. Characterization of D-lactate dehydrogenase from Pediococcus acidilactici that converts phenylpyruvic acid into phenyllactic acid.

    Biotechnology Letters 34(5):907 (2012) PMID 22261863

    The gene coding for D: -lactate dehydrogenase (D: -LDH) from Pediococcus acidilactici DSM 20284 was cloned and expressed in E. coli. The recombinant enzyme was purified by nickel-affinity chromatography. It converted phenylpyruvic acid (PPA) to 3-phenyllactic acid maximally at 30°C...
  6. Novel and highly effective chemoenzymatic synthesis of (2R)-2-[4-(4-cyano-2-fluorophenoxy)phenoxy]butylpropanoate based on lipase mediated t...

    Biotechnology Letters 34(4):709 (2012) PMID 22187074

    (2R)-2-[4-(4-Cyano-2-fluorophenoxy)phenoxy]butylpropanoate (cyhalofop-butyl, CyB) was synthesized by a chemoenzymatic route involving enantioselective transesterification with Candida antarctica lipase B (Novozym 435). The optimum organic solvent, acyl donor, a (...
  7. Application of PVA-derived porous media to accelerate biodegradation (composting) of organic solid substrates.

    Biotechnology Letters 34(4):635 (2012) PMID 22160365

    Poly(vinyl alcohol) (PVA)-derived cubes with fine pores and high water-binding and microbial adhesion capacities, enhanced the biodegradation of organic solid substrates with the temperature of the mixture increasing to over 65°C on the second day and being maintained ~60°C for the...
  8. Enhancing acid tolerance of Leuconostoc mesenteroides with glutathione.

    Biotechnology Letters 34(4):683 (2012) PMID 22160366

    Leuconostoc mesenteroides is a commercially important lactic acid bacterium currently used as a starter for kimchi and kefir. However, its sensitivity to acid stress limits its performance. L. mesenteroides was grown in a medium supplemented with 3.2 or 6.4 mM glutathione (GSH), and...
  9. Mutations in isocitrate dehydrogenase 2 accelerate glioma cell migration via matrix metalloproteinase-2 and 9.

    Biotechnology Letters 34(3):441 (2012) PMID 22105553

    We show that in response to IDH2 mutations, low levels of α-ketoglutarate increased the stabilization of HIF-1α which can contribute to tumor growth. Moreover, mutant IDH2-induced HIF-1α improved the secretion levels of pro-MMP-2 and pro-MMP-9 as well as the conversion from pro-MMP-2 to its activ...
  10. Virus-binding activity of the truncated C subunit of porcine aminopeptidase N expressed in Escherichia coli.

    Biotechnology Letters 34(3):533 (2012) PMID 22083718

    Seven overlapping truncated forms of the C subunit of porcine aminopeptidase N (pAPN-C) were expressed in Escherichia coli. By western blotting and ELISA test, all recombinant proteins were recognized by the antibody against native porcine aminopeptidase N. Recombinant proteins, rpAP...