Insight into the function of the Golgi membrane protein <scp>GOLM1</scp> in cholangiocytes through interactomic analysis
GOLM1, a Golgi membrane protein, is upregulated in cancers and liver diseases. Analysis of public RNAseq data from healthy human liver suggested that GOLM1 is predominantly expressed in cholangiocytes. Therefore, this study was initiated to understand the molecular functions of GOLM1 in cholangiocytes through protein interactomics. The findings reveal a number of putative GOLM1-interacting partners involved in cellular regimes such as mitochondrial and Golgi functions, ribonucleoprotein biogenesis, cell cycle, and basement membrane organization. Further, to validate select key roles, GOLM1 was silenced in MMNK-1 cholangiocytes and the effects on cell functions were studied. The silencing resulted in impaired mitochondrial function, reduced mitochondrial and P-body markers, increased apoptosis, and reduced cell adhesion, suggesting crucial roles of GOLM1 in maintaining normal cholangiocyte metabolism and function.
Authors
- You Zhou (ORCID: https://orcid.org/0000-0002-1743-1291)
- P.A. Nidhina Haridas (ORCID: https://orcid.org/0000-0003-3096-206X)
- Salla Keskitalo (ORCID: https://orcid.org/0000-0001-5555-1975)
- Vaishali Chaurasiya (ORCID: https://orcid.org/0000-0002-2128-110X)
- Vesa M. Olkkonen (ORCID: https://orcid.org/0000-0001-5553-7997)
- Emmagouni Sharath Kumar Goud (ORCID: https://orcid.org/0000-0002-6475-0308)
- Van Dien Nguyen (ORCID: https://orcid.org/0000-0003-1367-7881)
- Meghana Nagaraj (ORCID: https://orcid.org/0000-0003-3195-2138)
- Markku Varjosalo (ORCID: https://orcid.org/0000-0002-1340-9732)
- Luyang Li (ORCID: https://orcid.org/0000-0002-0980-5046)
Institutions
- University of Helsinki (FI)
- Minerva Foundation (FI)
- Centre for Immunity, Infection and Evolution (GB)
- Cardiff University (GB)
Publication Details
- Journal
- FEBS Letters
- Published
- 2025-02-01
- DOI
- https://doi.org/10.1002/1873-3468.70001
- Citations
- 1
- Primary Topic
- Endoplasmic Reticulum Stress and Disease
- Type
- article
- Field-Weighted Citation Impact
- 1.15
Funders
- Jane ja Aatos Erkon Säätiö
- Magnus Ehrnroothin Säätiö
- Päivikki ja Sakari Sohlbergin Säätiö
- Sigrid Juséliuksen Säätiö
- Diabetestutkimussäätiö