The Golgi complex : an organelle that determines urothelial cell biology in health and disease

Erdani-Kreft, Mateja (author), Mironov, Alexander A. (author), Hudoklin, Samo (author)

The Golgi complex undergoes considerable structural remodeling during differentiation of urothelial cells in vivo and in vitro. It is known that in a healthy bladder the differentiation from the basal to the superficial cell layer leads to the formation of the tightest barrier in our body, i.e., the blood–urine barrier. In this process, urothelial cells start expressing tight junctional proteins, apical membrane lipids, surface glycans, and integral membrane proteins, the uroplakins (UPs). The latter are the most abundant membrane proteins in the apical plasma membrane of differentiated superficial urothelial cells (UCs) and, in addition to well-developed tight junctions, contribute to the permeability barrier by their structural organization and by hindering endocytosis from the apical plasma membrane. By studying the transport of UPs, we were able to demonstrate their differentiation-dependent effect on the Golgi architecture. Although fragmentation of the Golgi complex is known to be associated with mitosis and apoptosis, we found that the process of Golgi fragmentation is required for delivery of certain specific urothelial differentiation cargoes to the plasma membrane as well as for cell–cell communication. In this review, we will discuss the currently known contribution of the Golgi complex to the formation of the blood–urine barrier in normal UCs and how it may be involved in the loss of the blood–urine barrier in cancer. Some open questions related to the Golgi complex in the urothelium will be highlighted.

• Language: English
• Keywords: Golgi complex, blood–urine barrier, urothelium, diferentiation, bladder cancer, uroplakins
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: MF - Faculty of Medicine
• Publication status: Published
• Publication version: Version of Record
• Year: 2022
• Number of pages: Str. 229-240
• Numbering: Vol. 158, iss. 3
• PID: 20.500.12556/RUL-145273
• UDC: 616.6
• ISSN on article: 0948-6143
• DOI: 10.1007/s00418-022-02121-0
• COBISS.SI-ID: 115936003
• Publication date in RUL: 14.04.2023

Record is a part of a journal

• Title: Histochemistry and cell biology
• Publisher: Springer Nature
• ISSN: 0948-6143
• COBISS.SI-ID: 1401876

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

• Language: Slovenian
• Keywords: Golgijev aparat, krvno-urinska pregrada, urotelij