https://doi.org/10.4081/ejh.2021.3242

Immunohistochemistry as a paramount tool in research of normal urothelium, bladder cancer and bladder pain syndrome

Vol. 65 No. 2 (2021)
Submitted: 11 March 2021
Accepted: 19 March 2021
Published: 24 March 2021
Urothelium, bladder cancer, bladder pain syndrome, uroplakins, keratins, retinoic acid, transient receptor potential channels, purinergic receptors
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Authors

Daša Zupančič
https://orcid.org/0000-0001-9492-5706
Institute of Cell Biology, Faculty of Medicine, University of Ljubljana, Slovenia.
Rok Romih
rok.romih@mf.uni-lj.si
https://orcid.org/0000-0001-9598-3561
Institute of Cell Biology, Faculty of Medicine, University of Ljubljana, Slovenia.

The urothelium, an epithelium of the urinary bladder, primarily functions as blood-urine permeability barrier. The urothelium has a very slow turn-over under normal conditions but is capable of extremely fast response to injury. During regeneration urothelium either restores normal function or undergoes altered differentiation pathways, the latter being the cause of several bladder diseases. In this review, we describe the structure of the apical plasma membrane that enables barrier function, the role of urothelium specific proteins uroplakins and the machinery for polarized membrane transports in terminally differentiated superficial umbrella cells. We address key markers, such as keratins, cancer stem cell markers, retinoic acid signalling pathway proteins and transient receptor potential channels and purinergic receptors that drive normal and altered differentiation in bladder cancer and bladder pain syndrome. Finally, we discuss uncertainties regarding research, diagnosis and treatment of bladder pain syndrome. Throughout the review, we emphasise the contribution of immunohistochemistry in advancing our understanding of processes in normal and diseased bladder as well as the most promising possibilities for improved bladder cancer and bladder pain syndrome management.

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Supporting Agencies

Slovenian Research Agency ARRS

How to Cite

Zupančič, D., & Romih, R. (2021). Immunohistochemistry as a paramount tool in research of normal urothelium, bladder cancer and bladder pain syndrome. European Journal of Histochemistry, 65(2). https://doi.org/10.4081/ejh.2021.3242

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