PMID- 33694168 OWN - NLM STAT- MEDLINE DCOM- 20211129 LR - 20211129 IS - 1097-4652 (Electronic) IS - 0021-9541 (Linking) VI - 236 IP - 10 DP - 2021 Oct TI - The region-selective regulation of endothelial claudin-5 expression and signaling in brain health and disorders. PG - 7134-7143 LID - 10.1002/jcp.30357 [doi] AB - The neurovascular unit (NVU) consists of neurons, glial cells, microvascular cells, and extracellular matrix, and is involved in a variety of physiological and pathological processes in the central nervous system (CNS). Within the NVU, the microvascular endothelial cells and pericytes principally contribute to maintaining the integrity of the blood-brain barrier (BBB). Various types of cells are connected to each other in the NVU by diverse cell adhesion molecules, of which claudin-5 (CLDN5) is by far the most abundantly expressed tight-junction protein in brain microvascular endothelial cells and absolutely required for the maintenance of the BBB. This review highlights recent progress in understanding the region-specific regulation and dysregulation of CLDN5 expression in CNS health and disorders. We also discuss how CLDN5 expression is regionally disrupted within the NVU. In addition, we focus on the link between cell adhesion and transcription factor signalings and describe the possible involvement of CLDN5-adhesion signaling in brain health and disorders. CI - (c) 2021 Wiley Periodicals LLC. FAU - Chiba, Hideki AU - Chiba H AUID- ORCID: 0000-0003-1777-8460 AD - Department of Basic Pathology, Fukushima Medical University School of Medicine, Fukushima, Japan. FAU - Ichikawa-Tomikawa, Naoki AU - Ichikawa-Tomikawa N AD - Department of Basic Pathology, Fukushima Medical University School of Medicine, Fukushima, Japan. FAU - Imura, Tetsuya AU - Imura T AD - Department of Basic Pathology, Fukushima Medical University School of Medicine, Fukushima, Japan. AD - Department of Surgical Pathology, Kyoto Prefectural University of Medicine, Kyoto, Japan. FAU - Sugimoto, Kotaro AU - Sugimoto K AUID- ORCID: 0000-0002-5299-7610 AD - Department of Basic Pathology, Fukushima Medical University School of Medicine, Fukushima, Japan. LA - eng PT - Journal Article PT - Review DEP - 20210310 PL - United States TA - J Cell Physiol JT - Journal of cellular physiology JID - 0050222 RN - 0 (Claudin-5) SB - IM MH - Animals MH - Blood-Brain Barrier/*metabolism/pathology MH - Brain Diseases/genetics/*metabolism/pathology MH - Claudin-5/genetics/*metabolism MH - Endothelial Cells/*metabolism/pathology MH - Gene Expression Regulation MH - Humans MH - *Signal Transduction MH - Tight Junctions/genetics/*metabolism/pathology OTO - NOTNLM OT - blood-brain barrier OT - cell adhesion OT - claudin OT - neurovascular unit OT - nuclear receptor OT - tight junction EDAT- 2021/03/12 06:00 MHDA- 2021/11/30 06:00 CRDT- 2021/03/11 07:14 PHST- 2021/02/14 00:00 [revised] PHST- 2021/01/11 00:00 [received] PHST- 2021/02/25 00:00 [accepted] PHST- 2021/03/12 06:00 [pubmed] PHST- 2021/11/30 06:00 [medline] PHST- 2021/03/11 07:14 [entrez] AID - 10.1002/jcp.30357 [doi] PST - ppublish SO - J Cell Physiol. 2021 Oct;236(10):7134-7143. doi: 10.1002/jcp.30357. Epub 2021 Mar 10.