Development of rapid staining protocols for laser-capture microdissection of brain vessels from human and rat coupled to gene expression analyses

Jelena Mojsilovic-Petrovic, Momir Nesic, Ally Pen, Wandong Zhang, Danica Stanimirovic*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

56 Scopus citations

Abstract

Laser-capture microdissection (LCM) is a technique that enables selective extraction of desired cells from heterogeneous tissues compatible with subsequent molecular analyses. The specific visualization of desired cell types prior to LCM is essential for achieving selective capture. We have developed rapid and selective staining protocols for LCM extraction of microvessels from human and rat brain. Vessels in human and rat brain sections were visualized by a 2min exposure to fluorescein-labeled lectins Ulex Europeaus Agglutinin I (UEA I) and Ricinus Communis Agglutinin I (RCA I), respectively. Immunohistochemical staining for the endothelial-specific marker, Factor VIII-related antigen (FVIII-rAg), co-localized with that for either UEA I or RCA I, confirming the selective staining of vascular structures with these lectins. Both brain vessels and perivascular parenchyma were captured using LCM, followed by RNA isolation. RT-PCR analyses demonstrated the enrichment of LCM-captured vessels and parenchyma in FVIII-rAg and GFAP mRNA, respectively. LCM-captured human vessels also expressed the tight junction-specific gene, zonula occludens 1 (ZO-1). LCM extraction of vessels from brain sections can be used to perform molecular fingerprinting of neurovascular unit in various brain pathologies. Crown

Original languageEnglish (US)
Pages (from-to)39-48
Number of pages10
JournalJournal of Neuroscience Methods
Volume133
Issue number1-2
DOIs
StatePublished - Mar 15 2004

Keywords

  • Brain vessels
  • Gene expression
  • Human
  • Laser-capture microdissection
  • Lectins
  • Rat

ASJC Scopus subject areas

  • Neuroscience(all)

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