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Spin coated chitin films for biosensors and its analysis are dependent on chitin-surface interactions

Publication year: 2018
Authors: Casteleijn M. G. a, Richardson D. a, Parkkila P. a, Granqvist N. b, Urtti A. a, c, Viitala T. a
Published in: Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2018, Vol. 539, p. 261-272
Chitin, abundant in nature, is a renewable resource with many possible applications in bioengineering. Biosensors, capable of label-free and in-line evaluation, play an important role in the investigation of [...]

Dynamic dispersal of surface layer biofilm induced by n-TiO2 based on surface plasmon resonance and waveguide

Publication year: 2018
Authors: Zhang P. 1,2, Guo J.S. 3, Yan P. 2, Chen Y.P. 4,2, Wang W. 5, Dai Y.Z. 1, Fang F. 2, Wang G.X. 6, Shen Y. 7
Published in: Applied and Environmental Microbiology, 2018
Pollutant degradation is mainly presented in the surface layer of biofilm, while the surface layer is the most vulnerable to the impairment of toxic pollutants. In this work, the effect of nanosized TiO2 [...]

Interaction of lecithin-cholesterol acyltransferase with lipid surfaces and apolipoprotein A-I derived peptides

Publication year: 2018
Authors: Casteleijn M. G., Parkkila P., Viitala T., Koivuniemi A.
Published in: Journal of Lipid Research, 2018
Lecithin-cholesterol acyltransferase (LCAT) is an enzyme responsible for the formation of cholesteryl esters from unesterified cholesterol (UE) and phospholipid (PL) molecules in high-density lipoprotein (HDL) particles. [...]

Label-free biosensors in the field of stem cell biology

Publication year: 2018
Authors: Fathi F. a, Rahbarghazi R. b, c, Rashidi M.-R. a, d
Published in: Biosensors and Bioelectronics, 2018, Vol. 101, p. 188-198
A great body of evidence unveiled the existence of different stem cell types in various tissues with efficient capability for self-renewal and differentiation. Characterization and enumeration [...]

Cyclodextrin-Functionalized Fiber Yarns Spun from Deep Eutectic Cellulose Solutions for Nonspecific Hormone Capture in Aqueous Matrices

Publication year: 2018
Authors: Orelma H. 1, Virtanen T. 1, Spoljaric S. 2, Lehmonen J. 1, Seppälä J. 2, Rojas O.J. 3, Harlin A. 1
Published in: Biomacromolecules, 2018, Vol. 19 (2), p. 652–661
A wood based yarn platform for capturing pharmaceutical molecules from water was developed. Cellulose fiber yarns were modified with cyclodextrins, and the capture of 17α-ethinyl estradiol (EE2), a synthetic [...]

Membrane bound COMT isoform is an interfacial enzyme: general mechanism and new drug design paradigm

Publication year: 2018
Authors: Magarkar A. a,b, Parkkila P. a, Viitala T. a, Lajunen T. a, Mobarak E. c,d, Licari G. e, Cramariuc O. c, Vauthey E. e , Rógc T. d, Bunker A.* a
Published in: Chemical Communications, 2018, Vol. 54, Issue 28, p. 3440-3443
The enzyme catechol-O-methyltransferase (COMT) has water soluble (S-COMT) and membrane associated (MB-COMT), bitopic, isoforms. Of these MB-COMT is a drug target [...]

Kinetic and thermodynamic studies of bovine serum albumin interaction with ascorbyl palmitate and ascorbyl stearate food additives using surface plasmon resonance

Publication year: 2018
Authors: Fathi F. a, Mohammadzadeh-Aghdash H. b, c, Sohrabi Y. b, c, Dehghan P. b, Ezzati J. N. D. a
Published in: Food Chemistry, 2018, Vol. 246, p.228-232
Ascorbyl palmitate (AP) and ascorbyl stearate (AS) are examples of food additives, which have extensive use in food industry. In this study, we evaluated the interaction of bovine serum albumin (BSA) with [...]

Characterization of membrane–foulant interactions with novel combination of Raman spectroscopy, surface plasmon resonance and molecular dynamics simulation

Publication year: 2018
Authors: Virtanen T. a, Parkkila P. b, Koivuniemi A. b, Lahti J. a, Viitala T. b, Kallioinen M. a, Mänttäri M. a, Bunker A. b
Published in: Separation and Purification Technology, 2018, Vol. 5, p. 263-272
Adsorptive fouling, by phenolic compounds, is a serious issue regarding the development and use of membrane based filtration technologies for water [...]

Topovectorial mechanisms control the juxtamembrane proteolytic processing of Nrf1 to remove its N-terminal polypeptides during maturation of the CNC-bZIP factor

Publication year: 2018
Authors: Xiang Y. 1, Halin J. 2, Fan Z. 1, Hu S. 1, Wang M. 1, Qiu L. 1, Zhang Z. 3, Mattjus P. 2, Zhang Y. 1
Published in: bioRxiv, 2018
The topobiological behaviour of Nrf1 dictates its post-translational modification and its ability to transactivate target genes. Here, we have elucidated that topovectorial mechanisms control [...]

Tuning the Stiffness of Surfaces by Assembling Genetically Engineered Polypeptides with Tailored Amino Acid Sequence

Publication year: 2018
Authors: Costa R.R. 1,2, González-Pérez M. 3,4, Herrero-Gutiérrez M. 3,4, Pires R.A. 1,2,5, Alonso M. 3,4, Rodriguez-Cabello J.C. 3,4, Reis R.L. 1,2,5, Pashkuleva I. 1,2
Published in: Biomacromolecules, 2018, Vol. 19(8), p. 3401-3411
We introduce elastin-like recombinamers (ELRs) as polypeptides with precise amino acid positioning to generate polypeptide coatings with tunable rigidity. Two ELRs [...]

Dispersive solid-phase imprinting of proteins for the production of plastic antibodies

Publication year: 2018
Authors: Ashley J., Feng X., Halder A., Zhou T., Sun Y.*
Published in: Chemical Communications, 2018, Vol. 54 (27), p. 3355-3358
We describe a novel dispersive solid-phase imprinting technique for the production of nano-sized molecularly imprinted polymers (nanoMIPs) as plastic antibodies. The template [...]

Carboxyl-rich plasma polymer surfaces in surface plasmon resonance immunosensing

Publication year: 2018
Authors: Makhneva E. 1, 2, 6, Obrusnik A. 1, 2, 6, Farka Z. 3, Skladal P. 3, 4, Vandenbossche M. 5, Hegemann D. 5, Zajickova L. 1, 2
Published in: Japanese Journal of Applied Physics, 2018, Vol. 57, Number 1S, 01AG06
Stable carboxyl-rich plasma polymers (PPs) were deposited onto the gold surface of surface plasmon resonance (SPR) chips under conditions that were chosen based on lumped kinetic model results. Carboxyl-rich films are [...]

The Influence of PEG-Thiol Derivatives on Controlling Cellular and Bacterial Interactions with Gold Surfaces

Publication year: 2018
Authors: Al-Ani A., Boden A., Al Kobaisi M., Pingle H., Wang P.-Y., Kingshott P.
Published in: Applied Surface Science, 2018, Vol. 462, p. 980-990
Surface modification with hydrophilic polymers is used extensively in a range of biomedical applications in order to control the interactions with proteins, cells and bacteria. owever, the architecture of the polymer layers [...]

Bovine serum albumin binding study to erlotinib using surface plasmon resonance and molecular docking methods

Publication year: 2018
Authors: Taghipour P. 1, Zakariazadeh M. 2, Sharifi M. 3, Ezzati Nazhad Dolatabadi J. 4, Barzegar A. 5
Published in: Journal of Photochemistry and Photobiology B, 2018, Vol. 183, p. 11-15
Bovine serum albumin (BSA) is the most abundant protein in the blood circulation and it is commonly used for drug delivery in blood. Therefore, we aim to study BSA interaction with erlotinib [...]

Development of a surface plasmon resonance sensor for coupling to capillary electrophoresis allowing affinity assessment of protein mixture components

Publication year: 2018
Authors: Domínguez-Vega E. a, Haselberg R. a, van Iperen D. b, Kool J. a, Somsen G.W. a, de Jong G.J. c
Published in: Sensors and Actuators B: Chemical, 2018, Vol. 254, p. 1040-1047
Surface plasmon resonance (SPR) currently is the major platform to study protein–protein interactions, but it lacks the selectivity o distinguish between binding components within one sample. [...]

In operando measurements of kinetics of solid electrolyte interphase formation in lithium-ion batteries

Publication year: 2018
Authors: Alemu T. a, Pradanawati S.A. a,b, Chang S.-C. a, Lin P.-L. a, Kuo Y.-L. c, Pham Q.-T. a, Su C.-H. d, Wang F.-M. a,e
Published in: Journal of Power Sources, 2018, Vol. 400, p. 426-433
This study applied two in operando techniques to reveal the reaction kinetics of solid electrolyte interphase formation on electrolyte and benzimidazole salt additives. The results obtained from studying interface effects reveal [...]

Generation and validation of murine monoclonal and camelid recombinant single domain antibodies specific for human pancreatic glycoprotein 2

Publication year: 2018
Authors: Schlör A. a, Holzlöhner P. a, Listek M. a, Griess C. a, Butze M. a, Micheel B. a, Hentschel Ch. b, Sowa M. b, Roggenbuck D. b,c, Schierack P. c, Füner J. d, Schliebs E. d, Goihl A. e, Reinhold D. e, Hanack K. a
Published in: New Biotechnology, 2018
Pancreatic secretory zymogen-granule membrane glycoprotein 2 (GP2) has been identified as a major autoantigenic target in Crohn’s disease patients. It was reported recently that a long (GP2a) and a short (GP2b) isoform [...]

Advancing Peptide-Based Biorecognition Elements for Biosensors Using In-Silico Evolution

Publication year: 2018
Authors: Xiao X. 1, Kuang Z. 2, Slocik J.M. 2, Tadepalli S. 4, Brothers M. 3, Kim S. 3, Mirau P.A. 2, Butkus C. 2, Farmer B.L. 2, Singamaneni S. 4, Hall C.K. 1, Naik R.R. 3
Published in: ACS Sensors, 2018, Vol. 3, Issue 5, p. 1024–1031
Sensors for human health and performance monitoring require biological recognition elements (BREs) at device interfaces for the detection of key molecular biomarkers that are measurable biological state indicators. [...]

Salt-Induced Control of the Grafting Density in Poly(ethylene glycol) Brush Layers by a Grafting-to Approach

Publication year: 2018
Authors: Ortiz R. 1, Olsen S. 2, Thormann E. 1
Published in: Langmuir, 2018, Vol. 34(15), p. 4455-4464
In this work, a method to obtain control of the grafting density during the formation of polymer brush layers by the grafting-to method of thiolated poly(ethylene glycol) onto gold is presented. The grafting density [...]

pH-Controlled Liposomes for Enhanced Cell Penetration in Tumor Environment

Publication year: 2018
Authors: Barattin M. 1, Mattarei A. 2, Balasso A. 1, Paradisi C. 2, Cantù L. 3, Del Favero E. 3, Viitala T. 4, Mastrotto F. 1, Caliceti P. 1, Salmaso S. 1
Published in: ACS Applied Materials & Interfaces, 2018, Vol. 10 (21), p. 17646–17661
An innovative pH-switchable colloidal system that can be exploited for site-selective anticancer drug delivery has been generated by liposome decoration with a new novel synthetic non-peptidic [...]