Recombinant ostreolysin (rOly) inhibits the anti-adipogenic Hedgehog (Hh) signaling pathway in 3T3-L1 cells

Erez Israeli, Nastacia Adler Berken, Ofer Gover, Eike Waechtershaeuser, Lutz Graeve, Betty Schwartz*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Obesity is a nutrition-associated disorder result of an imbalance between energy intake and energy expenditure. Changing adipocytes differentiation patterns is considered as a strategy to treat obesity-related disorders. Recently, much interest is focused on the role of posttranslational modifications of tubulin on adipocyte differentiation. We recently demonstrated that a recombinant version of the fungal protein Ostreolysin (rOly) drastically affects metabolism of adipose tissue. The aim of the present study is to extend our understanding of the in vitro effects of rOly on different adipocytes. We demonstrate that rOly inhibits the anti-adipogenic Hedgehog (Hh) signaling pathway in 3T3-L1 cells. Additionally, rOly affected the gene expression levels of SQSTM1 and Collagen type 1, which are mediated by AMP-activated protein kinase (AMPK) activity in 3T3-L1 cells. We provide a potential molecular mechanistic approach describing that the effect of rOly on adipocytes is mediated by tubulin acetylation and AMPK phosphorylation.

Original languageAmerican English
Pages (from-to)185-193
Number of pages9
JournalJournal of Functional Foods
Volume59
DOIs
StatePublished - Aug 2019

Bibliographical note

Funding Information:
We thank Prof Arieh Gertler and Dr. Gili Salomon (Hebrew University of Jerusalem) for helping in the designing and synthesizing the rOly mutants. We thank Prof Petra Kluger (University of Reutlingen) for support in culturing adipose-derived stem cells. This study was partly supported by Valin Technologies, Yavneh, Israel. E.I was partly supported by the scholarship of the Baden-Württemberg-Stipendium. E.W was partly supported by the scholarship of the Ministry of Science and Arts of the state of Baden- Württemberg. BS and EI conceived and designed the experiments. EI and EW performed most of the experiments and data analysis. OG provided technical assistance. NS synthesized the rOly mutants. LG conceived some of the experiments. BS contributed reagents, materials, and analytical tools. EI and BS wrote the manuscript and all of the authors made critical revisions. The authors declare that there are not conflict of interests

Funding Information:
We thank Prof Arieh Gertler and Dr. Gili Salomon ( Hebrew University of Jerusalem ) for helping in the designing and synthesizing the rOly mutants. We thank Prof Petra Kluger ( University of Reutlingen ) for support in culturing adipose-derived stem cells. This study was partly supported by Valin Technologies , Yavneh, Israel. E.I was partly supported by the scholarship of the Baden-Württemberg-Stipendium. E.W was partly supported by the scholarship of the Ministry of Science and Arts of the state of Baden- Württemberg.

Publisher Copyright:
© 2019 Elsevier Ltd

Keywords

  • AMPK
  • Adipose tissue
  • Cilia
  • Hedgehog signaling
  • Ostreolysin

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