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Updated: Jun 28, 2026
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RNA Isolation from Cell Specific Subpopulations Using Laser-capture Microdissection Combined with Rapid Immunolabeling
Published on: April 11, 2015
[A simple method for assessment of RNA integrity in laser capture microdissection samples]
Ying-fang Tian1, Zhao-ming Wei, Xin-lin Chen
1Institute of Neurobiology, Key Laboratory of Environment and Genes Related to Diseases of Education Ministry, Xi'an Jiaotong University College of Medicine, Xi'an 710061, China. tianyf18@mail.xjtu.edu.cn
Summary
A new, simple method effectively assesses RNA integrity in laser capture microdissection (LCM) samples. This technique ensures high-quality RNA for downstream applications, applicable to DNA and proteins too.
Area of Science:
- Molecular Biology
- Genomics
- Biochemistry
Context:
- Laser capture microdissection (LCM) enables precise isolation of specific cells from tissue sections.
- Assessing RNA integrity is crucial for reliable downstream molecular analyses.
- Traditional RNA integrity assessment methods can be challenging with limited LCM sample quantities.
Purpose:
- To develop a straightforward and reliable method for evaluating RNA integrity in LCM samples.
- To establish a quantitative and qualitative assessment technique for RNA derived from microdissected tissues.
- To validate the method using agarose gel electrophoresis and real-time PCR.
Summary:
- Total RNA was isolated from LCM samples and corresponding tissue sections.
- Agarose gel electrophoresis visualized ribosomal RNA (rRNA) bands (28S and 18S), indicating RNA integrity.
- Real-time PCR confirmed good RNA quality, with RNA quantity estimated based on cellular RNA content.
- The method demonstrated that intact RNA in original sections correlated with good quality RNA in LCM samples.
Impact:
- Establishes a simple, effective protocol for RNA integrity assessment in LCM samples.
- Provides a valuable tool for researchers working with precious, small-scale biological samples.
- The method's adaptability extends to assessing DNA and protein integrity in LCM-derived materials.
