Insight into the function of the Golgi membrane protein GOLM1 in cholangiocytes through interactomic analysis

Nagaraj, Meghana, Emmagouni, Sharath Kumar Goud, Chaurasiya, Vaishali, Li, Luyang, Nguyen, Van Dien, Keskitalo, Salla, Varjosalo, Markku, Zhou, You ORCID: https://orcid.org/0000-0002-1743-1291, Haridas, P. A. Nidhina and Olkkonen, Vesa M. 2025. Insight into the function of the Golgi membrane protein GOLM1 in cholangiocytes through interactomic analysis. FEBS Letters 10.1002/1873-3468.70001 Item availability restricted.

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Abstract

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.

Item Type:	Article
Date Type:	Published Online
Status:	In Press
Schools:	Medicine
Publisher:	Wiley
ISSN:	0014-5793
Date of First Compliant Deposit:	5 February 2025
Date of Acceptance:	6 January 2025
Last Modified:	12 Feb 2025 13:45
URI:	https://orca.cardiff.ac.uk/id/eprint/175948

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