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Phenotypic Analyses of the HD Transgenic Minipig Model (A11609)
Ellederová, Zdeňka
The transgenic Huntington's disease minipigs (TgHD) express N‐terminal part of human mutated huntingtin (124Q) under the control of human huntingtin promoter. The founder animal, born in 2009, gave birth to four subsequent generations with an equal contribution of wild‐type (WT) and transgenic (TgHD) piglets in all litters. The model is being used for preclinical huntingtin lowering studies. Here we take different non-invasive and invasive approaches, some of which are unique for large animal models, to study the phenotype development comparing WT and TgHD siblings. We show gradual progression of the disease in these TgHD animals. Moreover, some biomarkers were identified. These markers could serve for monitoring of organism response to HD treatment to assess efficacy and safety in preclinical studies prior to human clinical trials.
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Výsledky testování nanomateriálů pro ošetření kožných ran
Juhás, Štefan ; Juhásová, Jana
Pomocí experimentů na miniprasatech jsme testovali hojení čerstvé rány ošetřené pomocí různých nanovlákenných materiálu a porovnávali se standardním ošetřením. Z předem definovaných ran se v pravidelných intervalech odebírali vzorky na histologickou analýzu, mikrobiologii, provádělo se měření ran a fotodokumentace. Z miniprasat se taky odebírala krev pro stanovení prozánětlivých cytokinů.
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Following the phenotype development of TgHD minipigs by invasive and noninvasive approach
Ellederová, Zdeňka ; Baxa, Monika ; Vidinská, Daniela ; Bohuslavová, Božena ; Vochozková, Petra ; Šmatlíková, Petra ; Klíma, Jiří ; Valeková, Ivona ; Ardan, Taras ; Juhás, Štefan ; Juhásová, Jana ; Konvalinková, R. ; Klempíř, J. ; Pokorný, M. ; Krupička, R. ; Kauler, J. ; Hansíková, H. ; Motlík, Jan
Recent promising treatments for Huntington’s disease (HD) may require pre-clinical testing in large animals. In 2009, we generated HD transgenic (TgHD) minipigs with one copy encoding the N-terminal part (548 aa) of human huntingtin (HTT) with 124 CAG/CAA repeats integrated into chromosome 1 q24-q25. The successful germ line transmission occurred through four successive generations.
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Double strand DNA breaks response in Huntington´s disease transgenic minipigs
Vaškovičová, Michaela ; Šmatlíková, Petra ; Herbert, A. ; Motlík, Jan ; Šolc, Petr
Huntington’s disease (HD) is progressive neurodegenerative disorder caused by presence of CAG expansion in the huntingtin gene, which gives rise to mutated form of huntingtin protein (mHtt). There is a strong evidence that DNA damage response is compromised by presence of mHtt in cells and increase of double strand DNA breaks (DSBs) is an early event in HD pathology. It was shown, that level of γH2AX is significantly higher in R6/2 mice compared to wild-type animals. Moreover, level of γH2AX is higher also in striatal neurons and fibroblasts of human HD patients. Furthermore, protein p53, key player in DNA damage response, is hyperactivated in cells expressing mHtt and inhibition of p53 or ATM ameliorates phenotypes of HD animal models. However, exact mechanism of mHtt action is not clear and therefore further investigation of mHtt effects on DSBs response is very important for the understanding of HD pathology.
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