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In situ PCR: protocols and applications
1Department of Pathology, State University of New York at Stony Brook 11794, USA.
PCR Methods and Applications
|February 1, 1995
Summary
This study explores in situ PCR techniques for detecting DNA and cDNA. Optimizing variables like fixation and protease digestion is crucial for accurate results in fields such as oncogenesis and virology.
Area of Science:
- Molecular Biology
- Genetics
- Pathology
Background:
- In situ detection of PCR-amplified DNA and cDNA is a growing area of research.
- Standard in situ hybridization and PCR methods have established protocols.
- In situ PCR introduces unique variables affecting results.
Purpose of the Study:
- To provide guidance for investigators new to in situ PCR.
- To highlight critical variables influencing in situ PCR outcomes.
- To underscore the potential impact of in situ PCR across diverse scientific fields.
Main Methods:
- Direct incorporation of reporter molecules into paraffin-embedded tissue sections.
- Optimization of fixation type and duration.
- Controlled protease digestion.
- Careful composition of amplifying solutions and oligoprobe cocktails.
Main Results:
- Nonspecific DNA synthesis can occur under direct incorporation methods.
- Successful DNA synthesis within the nucleus is achievable.
- Protease digestion time is a critical factor for Reverse Transcription in situ PCR (RT in situ PCR).
Conclusions:
- In situ PCR offers a powerful tool for detecting nucleic acids within biological tissues.
- Mastering variables like protease digestion is key to successful application.
- This technique holds significant promise for advancing research in oncogenesis, embryology, RNA trafficking, and viral disease detection.