J 2024

FasL impacts Tgfb signaling in osteoblastic cells

KRATOCHVILOVA, Adela, Lucia KNOPFOVÁ, Janka GREGORKOVA, Reinhard GRUBER, Eva JANECKOVA et. al.

Základní údaje

Originální název

FasL impacts Tgfb signaling in osteoblastic cells

Autoři

KRATOCHVILOVA, Adela, Lucia KNOPFOVÁ (203 Česká republika, domácí), Janka GREGORKOVA, Reinhard GRUBER, Eva JANECKOVA, Yang CHAI a Eva MATALOVA

Vydání

Cells & Development, Elsevier B.V. 2024, 2667-2901

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10601 Cell biology

Stát vydavatele

Nizozemské království

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Impakt faktor

Impact factor: 3.900 v roce 2022

Organizační jednotka

Přírodovědecká fakulta

UT WoS

001300083300001

Klíčová slova anglicky

ECM; Fas ligand; Tgfb; Fosl2; Mef2c; Prrx1

Štítky

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 27. 9. 2024 14:23, Mgr. Marie Šípková, DiS.

Anotace

V originále

Fas ligand (FasL, CD178) belongs to classical apoptotic molecules, however, recent evidence expands the spectrum of FasL functions into non-apoptotic processes which also applies for the bone. Tgfb subfamily members (Tgfb1, Tgfb2, Tgfb3) represent major components in osteogenic pathways and extracellular matrix. Their possible association with FasL has not yet been investigated but can be postulated. To test such a hypothesis, FasL deficient (gld) calvaria-derived cells were examined with a focus on the expression of Tgfb receptor ligands. The qPCR analysis revealed significantly increased expression of Tgfb1, Tgfb2 and Tgfb3 in gld cells. To check the vice versa effect, the gld cells were stimulated by soluble FasL. As a consequence, a dramatic decrease in expression levels of all three ligands was observed. This phenomenon was also confirmed in IDG-SW3 (osteoblastic cells of endochondral origin). TFLink gateway identified Fosl2 as an exclusive candidate of FasL capable to impact expression of all three Tgfb ligands. However, Fosl2 siRNA did not cause any significant changes in expression of Tgfb ligands. Therefore, the upregulation of the three ligands is likely to occur separately. In this respect, we tested the only exclusive candidate transcription factor for Tgfb3, Prrx1. Additionally, an overlapping candidate for Tgfb1 and Tgfb2, Mef2c capable to modulate expression of sclerostin, was examined. Prrx1 as well as Mef2c were found upregulated in gld samples and their expression decreased after addition of FasL. The same effect of FasL treatment was observed in the IDG-SW3 model. Taken together, FasL deficiency causes an increase in the expression of Tgfb ligands and stimulation by FasL reduces Tgfb expression in osteoblastic cells. The candidates mediating the effect comprise Prrx1 for Tgfb3 and Mef2c for Tgfb1/2. These results indicate FasL as a novel cytokine interfering with Tgfb signaling and thus the complex osteogenic network. The emerging non-apoptotic functions of FasL in bone development and maintenance should also be considered in treatment strategies such as the anti-osteoporotic factor.

Návaznosti

LX22NPO5102, projekt VaV
Název: Národní ústav pro výzkum rakoviny (Akronym: NÚVR)
Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Národní ústav pro výzkum rakoviny, 5.1 EXCELES