Unit 3112: Molecular Biology Techniques

1. Introduction to Molecular Biology Techniques

• Overview of molecular biology and its importance in research and laboratory settings
• Fundamental principles underlying molecular techniques
• Applications in diagnostics, therapeutics, and research

2. Nucleic Acid Extraction Methods

• Importance of DNA and RNA extraction
• Sample types: cell cultures, tissues, blood, and other biological samples
• Extraction methods:
  • Chemical methods (phenol-chloroform extraction)
  • Silica column-based purification
  • Magnetic bead-based protocols
  • Automated extraction systems
• Quality and quantity assessment of nucleic acids

3. Polymerase Chain Reaction (PCR)

• Principles of PCR: denaturation, annealing, extension
• Components of PCR reaction mixture
• Types of PCR:
  • Conventional PCR
  • Quantitative PCR (qPCR)
  • Reverse Transcription PCR (RT-PCR)
  • Multiplex PCR
• Applications of PCR in molecular biology
• Common troubleshooting and optimization strategies

4. Gel Electrophoresis

• Principles of gel electrophoresis based on molecular charge and size
• Types of gels: agarose and polyacrylamide
• Preparation of gels and running buffers
• Visualization techniques: ethidium bromide, SYBR Green, Coomassie Blue
• Applications for DNA, RNA, and protein analysis

5. Recombinant DNA Technology

• Concept of recombinant DNA and molecular cloning
• Restriction enzymes: types and mechanisms
• DNA ligase and ligation process
• Cloning vectors: plasmids, cosmids, BACs
• Transformation/transfection methods
• Gene insertion and editing basics

6. DNA Sequencing Methods

• Importance of DNA sequencing in molecular biology
• Sanger sequencing methodology
• Next-Generation Sequencing (NGS): platforms and workflow
• Comparison of sequencing techniques
• Applications in genomics and molecular research

7. Protein Purification Techniques

• Protein isolation from biological samples
• Chromatography methods:
  • Affinity chromatography
  • Ion exchange chromatography
  • Size exclusion chromatography
• Electrophoretic methods for protein separation
• Immunoprecipitation techniques

8. Immunological Techniques in Molecular Biology

• Immunoassays overview
• Enzyme-Linked Immunosorbent Assay (ELISA): principles and applications
• Western blotting: procedure and interpretation
• Immunofluorescence microscopy
• Role in protein detection and quantification

9. CRISPR-Cas9 Gene Editing

• Discovery and mechanism of CRISPR-Cas9
• Components: guide RNA, Cas9 nuclease
• Applications in genetic engineering and research
• Ethical considerations and biosafety

10. Bioinformatics in Molecular Biology

• Introduction to bioinformatics and its significance
• Key databases (NCBI, Ensembl, UniProt)
• Sequence alignment tools (BLAST, ClustalW)
• Phylogenetic analysis basics
• Functional annotation and genome analysis tools

Summary

This unit provides a comprehensive exploration of modern molecular biology techniques, blending theoretical knowledge with practical applications to prepare learners for research and diagnostic environments.