Histological study and LYVE-1 immunolocalization of mouse mesenteric lymph nodes with "in vivo Cryotechnique"

Yuqin Bai, Bao Wu, Nobuo Terada, Nobuhiko Ohno, Sei Saitoh, Yurika Saitoh, Shinichi Ohno

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

The "in vivo cryotechnique" (IVCT) is a powerful tool to directly freeze living animal organs in order to maintain biological components in frozen tissues, reflecting their native states. In this study, mesenteric lymph nodes of living mice were directly frozen with IVCT, and we did morphological studies and immunohistochemical analyses on a hyaluronic acid receptor, LYVE-1. In lymph nodes, widely open lymphatic sinuses were observed, and many lymphocytes adhered to inner endothelial cells along subcapsular sinuses. The LYVE-1 was clearly immunolocalized at inner endothelial cells of subcapsular sinuses, as well as those of medullary sinuses. Conventional pre-embedding electron microscopy also showed LYVE-1 immunolocalization along both the apical and basal sides of cell membranes of inner endothelial cells. By triple-immunostaining for LYVE-1, smooth muscle actin, and type IV collagen, the LYVE-1 was immunolocalized only in the inner endothelial cells, but not in outer ones which were surrounded by collagen matrix and smooth muscle cells. Thus, the functional morphology of lymph nodes in vivo was demonstrated and LYVE-1 immunolocalization in inner endothelial cells of subcapsular sinuses suggests hyaluronic acid incorporation into lymph node parenchyma.

Original languageEnglish
Pages (from-to)81-90
Number of pages10
JournalActa Histochemica et Cytochemica
Volume44
Issue number2
DOIs
Publication statusPublished - 2011
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Pathology and Forensic Medicine
  • Biochemistry
  • Physiology
  • Histology
  • Cell Biology

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