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Wyświetlanie 1-3 z 3
Tytuł:
Dried human skin fibroblasts as a new substratum for functional culture of hepatic cells
Autorzy:
Wencel, Agnieszka
Zakrzewska, Karolina
Samluk, Anna
Noszczyk, Bartłomiej
Pijanowska, Dorota
Pluta, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/1038663.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
cocultures
culture substratum
dried fibroblasts
human skin fibroblasts
C3A cells
Opis:
The primary hepatocytes culture is still one of the main challenges in toxicology studies in the drug discovery process, development of in vitro models to study liver function, and cell-based therapies. Isolated hepatocytes display a rapid decline in viability and liver-specific functions including albumin production, conversion of ammonia to urea, and activity of the drug metabolizing enzymes. A number of methods have been developed in order to maintain hepatocytes in their highly differentiated state in vitro. Optimization of culture conditions includes a variety of media formulations and supplements, growth surface coating with the components of extracellular matrix or with synthetic polymers, three-dimensional growth scaffolds and decellularized tissues, and coculture with other cell types required for the normal cell-cell interactions. Here we propose a new substratum for hepatic cells made by drying confluent human skin fibroblasts' culture. This growth surface coating, prepared using maximally simplified procedure, combines the advantages of the use of extracellular matrices and growth factors/cytokines secreted by the feeder layer cells. In comparison to the hepatoma cells grown on a regular tissue culture plastic, cells cultured on the dried fibroblasts were able to synthesize albumin in larger quantities and to form greater number of apical vacuoles. Unlike the coculture with the living feeder layer cells, the number of cells grown on the new substratum was not reduced after fourteen days of culture. This fact could make the dried fibroblasts coating an ideal candidate for the substrate for non-dividing human hepatocytes.
Źródło:
Acta Biochimica Polonica; 2017, 64, 2; 357-363
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Intranuclear trafficking of plasmid DNA is mediated by nuclear polymeric proteins lamins and actin
Autorzy:
Ondřej, Vladan
Lukášová, Emilie
Krejčí, Jana
Kozubek, Stanislav
Powiązania:
https://bibliotekanauki.pl/articles/1040744.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
plasmid DNA
DNA double-strand breaks
nuclear actin
lamin A/C
Opis:
Functions of nuclear polymeric proteins such as lamin A/C and actin in transport of plasmid DNA were studied. The results show that the lamina plays an important role in plasmid DNA's entry into the cell nucleus from the cytoplasm. Selective disruption of lamin A/C led to a halt in plasmid DNA transport through the nuclear envelope. Inside the nucleus, plasmid DNA was frequently localized at sites with impaired genome integrity, such as DNA double-strand breaks (DSBs), occurring spontaneously or induced by ionizing radiation. Polymeric actin obviously participates in nuclear transport of plasmid DNA, since inhibition of actin polymerization by latrunculin B disturbed plasmid transport inside the cell nucleus. In addition, precluding of actin polymerization inhibited plasmid co-localization with newly induced DSBs. These findings indicate the crucial role of polymeric actin in intranuclear plasmid transport.
Źródło:
Acta Biochimica Polonica; 2008, 55, 2; 307-315
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Antibody-based antiangiogenic and antilymphangiogenic therapies to prevent tumor growth and progression
Autorzy:
Bzowska, Monika
Mężyk-Kopeć, Renata
Próchnicki, Tomasz
Kulesza, Małgorzata
Klaus, Tomasz
Bereta, Joanna
Powiązania:
https://bibliotekanauki.pl/articles/1039514.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
monoclonal antibodies
antiangiogenic therapy
antilymphangiogenic therapy
VEGF- A
VEGF-C
VEGF-D
Opis:
Blood and lymphatic vessel formation is an indispensable factor for cancer progression and metastasis. Therefore, various strategies designed to block angiogenesis and lymphangiogenesis are being investigated in the hope to arrest and reverse tumor development. Monoclonal antibodies, owing to their unequalled diversity and specificity, might be applied to selectively inhibit the pathways that cancer cells utilize to build up a network of blood vessels and lymphatics. Among the possible targets of antibody-based therapies are proangiogenic and prolymphangiogenic growth factors from the VEGF family and the receptors to which they bind (VEGFRs). Here, we present molecular mechanisms of angiogenesis and lymphangiogenesis exploited by tumors to progress and metastasise, with examples of antibody-based therapeutic agents directed at interfering with these processes. The expanding knowledge of vascular biology helps to explain some of the problems encountered in such therapies, that arise due to the redundancy in signaling networks controlling the formation of blood and lymphatic vessels, and lead to tumor drug resistance. Nonetheless, combined treatments and treatments focused on newly discovered proangiogenic and prolymphangiogenic factors give hope that more prominent therapeutic effects might be achieved in the future.
Źródło:
Acta Biochimica Polonica; 2013, 60, 3; 263-275
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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