2019
Cylindrospermopsin induces cellular stress and activation of ERK1/2 and p38 MAPK pathways in adult human liver stem cells
RAŠKA, Jan, Lucie ČTVERÁČKOVÁ, Aneta DYDOWICZOVÁ, Iva SOVADINOVÁ, Luděk BLÁHA et. al.Základní údaje
Originální název
Cylindrospermopsin induces cellular stress and activation of ERK1/2 and p38 MAPK pathways in adult human liver stem cells
Autoři
RAŠKA, Jan (203 Česká republika, domácí), Lucie ČTVERÁČKOVÁ (203 Česká republika, domácí), Aneta DYDOWICZOVÁ (203 Česká republika, domácí), Iva SOVADINOVÁ (203 Česká republika, domácí), Luděk BLÁHA (203 Česká republika, domácí) a Pavel BABICA (203 Česká republika, garant, domácí)
Vydání
Chemosphere, Oxford, PERGAMON-ELSEVIER SCIENCE LTD, 2019, 0045-6535
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10511 Environmental sciences
Stát vydavatele
Velká Británie a Severní Irsko
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 5.778
Kód RIV
RIV/00216224:14310/19:00107574
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000469903400006
Klíčová slova anglicky
Adult human liver stem cells HL1-hT1; Cylindrospermopsin; DNA damage; Mitogen-activated protein kinases; Nongenotoxic mechanisms; Oxidative stress
Štítky
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 24. 3. 2020 12:50, Mgr. Marie Šípková, DiS.
Anotace
V originále
Cyanobacterial toxin cylindrospermopsin (CYN) is an emerging freshwater contaminant, whose expanding environmental occurrence might result into increased human health risks. CYN is potent hepatotoxin, with cytotoxicity and genotoxicity documented in primary hepatocytes or hepatoma cell lines. However, there is only limited information about CYN effects on adult human liver stem cells (LSCs), which play an important role in liver tissue development, regeneration and repair. In our study with human liver cell line HL1-hT1 which expresses characteristics of LSC5, CYN was found to be cytotoxic and increasing cell death after 24-48 h exposure to concentrations >1 mu M. Subcytotoxic 1 mu M concentration did not induce cell death or membrane damage, but inhibited cellular processes related to energy production, leading to a growth stagnation after >72 h. Interestingly, these effects were not associated with increased DNA damage, reactive oxygen species production, or endoplasmic reticulum stress. However, CYN induced a sustained (24-48 h) activation of mitogen-activated protein kinases ERK1/2 and p38, and increased expression of stress-related transcription factor ATF3. Thus, LSC5 were not primarily affected by CYN-induced genotoxicity and oxidative stress, but via activation of signaling and transcriptional pathways critical for regulation of cell proliferation, stress responses, cell survival and inflammation. Alterations of LSCs during CYN-induced liver injury, including the role of nongenotoxic mechanisms, should be therefore considered in mechanistic assessments of chronic CYN hepatotoxicity and hepatocarcinogenicity.
Návaznosti
EF16_013/0001761, projekt VaV |
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GA15-12408S, projekt VaV |
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LM2015051, projekt VaV |
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