Coated Glass Slides TACAS Are Applicable to Heat-Assisted Immunostaining and In Situ Hybridization at the Electron...

Area of Science:

• Electron Microscopy
• Virology
• Cell Biology

Background:

• Visualizing viral components within host cells is crucial for understanding disease pathogenesis.
• Pre-embedding electron microscopy requires specialized sample preparation techniques.
• Current methods using aminopropyltriexoxysilane-coated slides are unsuitable for epoxy resin transfer.

Purpose of the Study:

• To develop and validate a novel method for visualizing severe fever with thrombocytopenia syndrome (SFTS) virus antigen and genome.
• To identify suitable coated glass slides for pre-embedding electron microscopy requiring epoxy resin transfer.
• To adapt this technique for immunocytochemical evaluation after cell transfer.

Main Methods:

• Pre-embedding electron microscopy was performed on human splenic red pulp macrophages.
• Sections underwent preheating treatment for antigen and genome visualization.
• Thinlayer Advanced Cytology Assay System (TACAS) coated glass slides were utilized and compared to aminopropyltriexoxysilane-coated slides.

Main Results:

• Aminopropyltriexoxysilane-coated slides prevented section transfer to epoxy resin.
• TACAS-coated glass slides facilitated successful transfer of stained sections to epoxy resin.
• The developed technique enabled visualization of SFTS virus in macrophage cytoplasm.

Conclusions:

• TACAS-coated glass slides are suitable for pre-embedding electron microscopy requiring epoxy resin transfer.
• This method allows for the visualization of SFTS virus components in macrophages.
• The technique is adaptable for other cytology practices needing post-transfer immunocytochemical evaluation.