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The potential repertoire of the innate immune system in the bladder: expression of pattern recognition receptors in the rat bladder and a rat urothelial cell line (MYP3 cells).

Publication ,  Journal Article
Hughes, FM; Turner, DP; Todd Purves, J
Published in: Int Urol Nephrol
December 2015

PURPOSE: The urothelium is a frontline sensor of the lower urinary tract, sampling the bladder lumen and stimulating an immune response to infectious and noxious agents. Pattern recognition receptors (PRRs) recognize such agents and coordinate the innate response, often by forming inflammasomes that activate caspase-1 and the release of interleukin-1. We have shown the presence of one PRR (NLRP3) in the urothelia and its central role in the inflammatory response to cyclophosphamide. The purpose of this study was to (1) assess the likely range of the PPR response by assessing the repertoire present in the rat bladder and (2) determine the utility of the MYP3 rat urothelia cell line for in vitro studies by assessing its PPR repertoire and functional responsiveness. METHODS: Immunohistochemistry was performed for seven PPRs (NLRP1, NLRP3, NLRP6, NLRP7, NLRP12, NLRC4 and AIM2) on bladder sections and MYP3 cells. For functionality, MYP3 cells were challenged with the quintessential NLRP3 activator ATP and assessed for caspase-1 activation. RESULTS: All PPRs examined were expressed in the bladder and localized to the urothelial layer with several also in the detrusor (none in the interstitia). MYP3 cells also expressed all PRRs with a variable intracellular location. ATP-stimulated caspase-1 activity in MYP3 cells in a dose-dependent manner was reduced by knockdown of NLRP3 expression. CONCLUSION: The results suggest that the bladder possesses the capacity to initiate an innate immune response to a wide array of uropathological agents and the MYP3 cells will provide an excellent investigational tool for this field.

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Published In

Int Urol Nephrol

DOI

EISSN

1573-2584

Publication Date

December 2015

Volume

47

Issue

12

Start / End Page

1953 / 1964

Location

Netherlands

Related Subject Headings

  • Urothelium
  • Urology & Nephrology
  • Urinary Bladder
  • Receptors, Vasopressin
  • Receptors, Pattern Recognition
  • Receptors, Cell Surface
  • Receptors, Angiotensin
  • Rats, Sprague-Dawley
  • Rats
  • RNA, Small Interfering
 

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Hughes, F. M., Turner, D. P., & Todd Purves, J. (2015). The potential repertoire of the innate immune system in the bladder: expression of pattern recognition receptors in the rat bladder and a rat urothelial cell line (MYP3 cells). Int Urol Nephrol, 47(12), 1953–1964. https://doi.org/10.1007/s11255-015-1126-6
Hughes, Francis M., David P. Turner, and J. Todd Purves. “The potential repertoire of the innate immune system in the bladder: expression of pattern recognition receptors in the rat bladder and a rat urothelial cell line (MYP3 cells).Int Urol Nephrol 47, no. 12 (December 2015): 1953–64. https://doi.org/10.1007/s11255-015-1126-6.
Hughes, Francis M., et al. “The potential repertoire of the innate immune system in the bladder: expression of pattern recognition receptors in the rat bladder and a rat urothelial cell line (MYP3 cells).Int Urol Nephrol, vol. 47, no. 12, Dec. 2015, pp. 1953–64. Pubmed, doi:10.1007/s11255-015-1126-6.
Journal cover image

Published In

Int Urol Nephrol

DOI

EISSN

1573-2584

Publication Date

December 2015

Volume

47

Issue

12

Start / End Page

1953 / 1964

Location

Netherlands

Related Subject Headings

  • Urothelium
  • Urology & Nephrology
  • Urinary Bladder
  • Receptors, Vasopressin
  • Receptors, Pattern Recognition
  • Receptors, Cell Surface
  • Receptors, Angiotensin
  • Rats, Sprague-Dawley
  • Rats
  • RNA, Small Interfering