Spatial expression of claudin family members in various organs of mice

  • Authors:
    • Inho Hwang
    • Hyun Yang
    • Hong‑Seok Kang
    • Chang‑Hwan Ahn
    • Geun‑Shik Lee
    • Eui‑Ju Hong
    • Beum‑Soo An
    • Eui‑Bae Jeung
  • View Affiliations

  • Published online on: March 10, 2014     https://doi.org/10.3892/mmr.2014.2031
  • Pages: 1806-1812
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Abstract

Claudins (CLDNs) are tetraspan transmembrane proteins, which are components of tight junctions. The CLDN family is composed of 27 members that are responsible for paracellular transport and certain CLDNs form charge‑selective ion channels. CLDNs have two extracellular loops, and the charge of the first extracellular loop determines the ion selectivity of each CLDN. Although the expression and function of each CLDN have been previously investigated, the distribution of CLDNs in various target organs remains to be determined. In the present study, the tissue‑specific mRNA distribution of CLDNs (1‑5, 7‑8, 10a and b, 11‑12, 14‑17 and 19) in the duodenum, ileum, colon, kidney, liver and lung were defined. Among the tested CLDNs, CLDN1, 2, 12 and 16 were selected for further investiagtion. It was observed that CLDN1, CLDN2 and CLDN12 transcripts and proteins were particularly abundant in the investigated organs. Notably, immune‑reactive CLDN16 was detected in a tissue‑specific manner and shown in the renal tubules and portal vein. The tested CLDNs were localized to intercellular apical junctions in the epithelium of the intestine, renal tubule and bronchus. Based on this novel information, the presence of several types of CLDNs is of interest as CLDNs may promote or dampen the paracellular diffusion of specific ions.
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May-2014
Volume 9 Issue 5

Print ISSN: 1791-2997
Online ISSN:1791-3004

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Spandidos Publications style
Hwang I, Yang H, Kang HS, Ahn CH, Lee GS, Hong EJ, An BS and Jeung EB: Spatial expression of claudin family members in various organs of mice. Mol Med Rep 9: 1806-1812, 2014.
APA
Hwang, I., Yang, H., Kang, H., Ahn, C., Lee, G., Hong, E. ... Jeung, E. (2014). Spatial expression of claudin family members in various organs of mice. Molecular Medicine Reports, 9, 1806-1812. https://doi.org/10.3892/mmr.2014.2031
MLA
Hwang, I., Yang, H., Kang, H., Ahn, C., Lee, G., Hong, E., An, B., Jeung, E."Spatial expression of claudin family members in various organs of mice". Molecular Medicine Reports 9.5 (2014): 1806-1812.
Chicago
Hwang, I., Yang, H., Kang, H., Ahn, C., Lee, G., Hong, E., An, B., Jeung, E."Spatial expression of claudin family members in various organs of mice". Molecular Medicine Reports 9, no. 5 (2014): 1806-1812. https://doi.org/10.3892/mmr.2014.2031