J 2019

2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) Disrupts Control of Cell Proliferation and Apoptosis in a Human Model of Adult Liver Progenitors.

SVOBODOVÁ, Jana, Jiřina PROCHÁZKOVÁ, Markéta KABÁTKOVÁ, Martin KRKOŠKA, Lenka ŠMERDOVÁ et. al.

Základní údaje

Originální název

2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) Disrupts Control of Cell Proliferation and Apoptosis in a Human Model of Adult Liver Progenitors.

Autoři

SVOBODOVÁ, Jana (203 Česká republika, domácí), Jiřina PROCHÁZKOVÁ (203 Česká republika), Markéta KABÁTKOVÁ, Martin KRKOŠKA (203 Česká republika, domácí), Lenka ŠMERDOVÁ, Helena LÍBALOVÁ, Jan TOPINKA, Jiří KLÉMA, Alois KOZUBÍK (203 Česká republika), Miroslav MACHALA (203 Česká republika) a Jan VONDRÁČEK (203 Česká republika, garant)

Vydání

TOXICOLOGICAL SCIENCES, OXFORD, OXFORD UNIV PRESS, 2019, 1096-6080

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

30108 Toxicology

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Impakt faktor

Impact factor: 3.703

Kód RIV

RIV/00216224:14310/19:00111599

Organizační jednotka

Přírodovědecká fakulta

UT WoS

000501738100012

Klíčová slova anglicky

aryl hydrocarbon receptor; HepaRG cells; cell proliferation; apoptosis; Hippo signaling

Štítky

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 2. 5. 2024 08:14, Mgr. Marie Šípková, DiS.

Anotace

V originále

The aryl hydrocarbon receptor (AhR) activation has been shown to alter proliferation, apoptosis, or differentiation of adult rat liver progenitors. Here, we investigated the impact of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD)-mediated AhR activation on a human model of bipotent liver progenitors, undifferentiated HepaRG cells. We used both intact undifferentiated HepaRG cells, and the cells with silenced Hippo pathway effectors, yes-associated protein 1 (YAP) and transcriptional coactivator with PDZ-binding motif (TAZ), which play key role(s) in tissue-specific progenitor cell self-renewal and expansion, such as in liver, cardiac, or respiratory progenitors. TCDD induced cell proliferation in confluent undifferentiated HepaRG cells; however, following YAP, and, in particular, double YAP/TAZ knockdown, TCDD promoted induction of apoptosis. These results suggested that, unlike in mature hepatocytes, or hepatocyte-like cells, activation of the AhR may sensitize undifferentiated HepaRG cells to apoptotic stimuli. Induction of apoptosis in cells with silenced YAP/TAZ was associated with upregulation of death ligand TRAIL, and seemed to involve both extrinsic and mitochondrial apoptosis pathways. Global gene expression analysis further suggested that TCDD significantly altered expression of constituents and/or transcriptional targets of signaling pathways participating in control of expansion or differentiation of liver progenitors, including EGFR, Wnt/beta-catenin, or tumor growth factor-beta signaling pathways. TCDD significantly upregulated cytosolic proapoptotic protein BMF (Bcl-2 modifying factor) in HepaRG cells, which could be linked with an enhanced sensitivity of TCDD-treated cells to apoptosis. Our results suggest that, in addition to promotion of cell proliferation and alteration of signaling pathways controlling expansion of human adult liver progenitors, AhR ligands may also sensitize human liver progenitor cells to apoptosis.