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Wyświetlanie 1-2 z 2
Tytuł:
Large size dna in vitro and in vivo delivery using chitosan transfection
Autorzy:
Sankov, Vladislav
Shagdarova, Balzhima
Varlamov, Valerii
Esipov, Roman
Svirshchevskaya, Elena
Powiązania:
https://bibliotekanauki.pl/articles/1034546.pdf
Data publikacji:
2017
Wydawca:
Sieć Badawcza Łukasiewicz - Polskie Towarzystwo Chitynowe
Tematy:
DNA delivery
chitosan derivatives
hydrophobic groups
рRFP pmKate2 reporter plasmid
Opis:
In modern medicine, many diseases can be treated using gene therapy, which requires a DNA delivery system to prevent DNA from degradation and to transport it to the cells. Liposomal reagents are expensive for such a therapy and new inexpensive biodegradable DNA carriers are required. Chitosan (Ch) is a cationic polymer with promising potency for gene delivery. Some Ch derivatives have been shown to efficiently transfect mammalian cells in vitro. However, there are many inconsistencies in the literature concerning the effectiveness of Ch systems for in vivo gene transfer. The aim of this work was to develop a Ch-based vector for in vivo delivery of a large-size DNA fragment coding for the far-red fluorescent protein (RFP). Among several Ch derivatives, hexanoyl-Ch (HCh) with a molecular weight of 20 kDa effectively transfected cells in vitro. Intratumoural injection of polyplexes in colon and lung tumours resulted in local expression of RFP in tumours.
Źródło:
Progress on Chemistry and Application of Chitin and its Derivatives; 2017, 22; 190-200
1896-5644
Pojawia się w:
Progress on Chemistry and Application of Chitin and its Derivatives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quantity of hydrophobic functional CH-groups - decisive for soil water repellency caused by digestate amendment
Autorzy:
Voelkner, A.
Holthusen, D.
Ellerbrock, R.H.
Horn, R.
Powiązania:
https://bibliotekanauki.pl/articles/24134.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Opis:
Anaerobic digestates are used as organic fertilizers; however, they are suspected to interfere negatively with soils.To investigate the relevance of the anaerobic digestates composition on potential wettability and contact angle of the soil, we mixed in a laboratory experiment 30 m³ ha-1 of anaerobic digesta-tes derived from mechanically pre-treated substrates from maizeand sugar beet with a homogenized Cambic Luvisol. Fourier trans-form infrared-spectra and diffuse reflectance infrared Fouriertransform-spectra of particle intact and finely ground soil-anaerobic digestates-mixtures were analyzed to determine the quantities of hydrophobic functional groups in the soil-anaerobic digestates-mixtures that are used here as an indicator for the potential hydrophobicity. The anaerobic digestates application increased the amount of hydrophobic functional groups of the mixtures and reduced the wettability of the soil. However, for intact particle samples an up to threefold higher amount of hydrophobic groups was found as compared to the finely ground ones, indicating a dilution effect of mechanical grinding on the effectivity of the organic matter that is presumably located as a coating on mineral soil particles. For the particle intact samples, the intensity of hydrophobic functional groups bands denoting hydrophobic brickstones in organic matter is indicative for the actual wettability of the soil-anaerobic digestates-mixtures.
Źródło:
International Agrophysics; 2015, 29, 2
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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