Electrophoresis and Product Isolation Course

Lesson 1 • Principles of Ionic Migration

Covers charge, electric field, and net migration velocity as the basis of all electrophoretic separation. Establishes vocabulary used throughout the course.

Lesson 2 • Safety and Regulatory Essentials

Covers electrical hazards, chemical risks, and compliance with laboratory safety standards. Ensures safe practice before any hands-on work begins.

Lesson 3 • Separation Media Overview

Introduces gels, capillaries, and membranes as physical matrices that modulate migration. Provides context for technique-specific chapters that follow.

Lesson 4 • Joule Heating and Band Broadening

Addresses heat generation from current flow and its impact on resolution and reproducibility. Understanding these limits guides instrument and buffer choices later.

Lesson 1 • SDS-PAGE for Protein Analysis

Covers SDS denaturation, polyacrylamide gel formulation, and molecular weight estimation. Builds on buffer and pH knowledge to achieve reproducible protein separation.

Lesson 2 • Agarose Gel Preparation and Running

Teaches gel casting, percentage selection, and electrophoresis conditions for DNA and RNA. Connects ionic migration principles to practical nucleic acid analysis.

Lesson 3 • Two-Dimensional Gel Electrophoresis

Combines isoelectric focusing with SDS-PAGE for high-resolution proteome mapping. Requires mastery of both gel systems covered earlier in this chapter.

Lesson 4 • Gel Staining and Visualization

Presents Coomassie, silver, SYBR, and fluorescent staining methods for band detection. Staining choice directly affects downstream quantification and isolation steps.

Lesson 1 • Isoelectric Point Theory

Defines pI and explains how proteins migrate to their isoelectric point in a pH gradient. Grounds the technique in charge equilibrium concepts from Chapter 1.

Lesson 2 • Carrier Ampholyte IEF Systems

Covers ampholyte-generated pH gradients in tube and slab gel formats. Introduces practical gradient formation and its reproducibility challenges.

Lesson 3 • Immobilized pH Gradient Strips

Teaches IPG strip selection, rehydration, and focusing parameters for robust IEF. IPG strips overcome ampholyte variability and are standard in proteomics workflows.

Lesson 4 • Capillary Isoelectric Focusing

Introduces cIEF as a high-resolution, automated alternative to gel-based IEF. Connects capillary principles introduced earlier to charge-based protein characterization.

Lesson 1 • CE Data Interpretation and Reporting

Teaches peak integration, migration time correction, and result reporting for CE runs. Accurate data interpretation is prerequisite to using CE for product release decisions.

Lesson 2 • Capillary Gel Electrophoresis for Nucleic Acids

Covers polymer-filled capillaries for DNA fragment sizing and purity assessment. Directly replaces slab gel methods with faster, quantitative automated analysis.

Lesson 3 • Capillary Zone Electrophoresis Fundamentals

Explains electroosmotic flow, analyte zones, and detection in fused-silica capillaries. Extends ionic migration theory to the nanoliter-scale capillary environment.

Lesson 4 • CE Method Development and Validation

Guides systematic optimization of buffer, voltage, temperature, and injection parameters. Validation concepts ensure CE methods meet regulatory and quality standards.

Lesson 1 • Dot Blot and Slot Blot Methods

Introduces rapid, gel-free membrane application for semi-quantitative analyte detection. Provides a faster alternative when gel resolution is not required.

Lesson 2 • Southern and Northern Blotting

Teaches DNA and RNA transfer, hybridization with labeled probes, and signal detection. Extends blotting principles to nucleic acid targets for gene expression analysis.

Lesson 3 • Western Blotting Workflow

Covers blocking, primary and secondary antibody incubation, and chemiluminescent detection. Integrates SDS-PAGE separation with immunodetection for protein identification.

Lesson 4 • Blot Stripping and Reprobing

Covers membrane stripping protocols to remove antibodies for sequential reprobing. Maximizes data from a single blot and reduces sample consumption.

Lesson 1 • Gel Excision and Fragmentation

Teaches sterile scalpel technique, gel slice handling, and fragmentation for efficient extraction. Proper excision minimizes contamination and maximizes recovery yield.

Lesson 2 • Electroelution of Target Molecules

Covers electroelution devices and conditions for efficient recovery of proteins and DNA. Faster and higher-yield than passive diffusion for large or tightly bound molecules.

Lesson 3 • Cleanup and Concentration of Isolates

Addresses desalting, ultrafiltration, and precipitation to prepare isolates for downstream use. Ensures recovered material meets purity and concentration requirements.

Lesson 4 • Band Visualization for Excision

Covers UV shadowing, reversible staining, and fluorescent methods that preserve molecule integrity. Choosing the right visualization method prevents damage before isolation.

Lesson 1 • Using Electrophoresis to Guide Purification

Teaches interpretation of gel and CE results to identify impurities and select chromatography modes. Bridges analytical electrophoresis to preparative isolation strategy.

Lesson 2 • Affinity Chromatography for Target Capture

Covers ligand-target binding, wash stringency, and elution strategies for high-selectivity capture. Achieves purity levels that gel-based isolation alone cannot reach.

Lesson 3 • Monitoring Purity Across Purification Steps

Uses analytical gel electrophoresis and CE to track purity at each chromatography step. Closes the loop between analytical and preparative workflows.

Lesson 4 • Size Exclusion Chromatography

Explains molecular sieving in porous beads for size-based separation and buffer exchange. Complements gel sieving concepts and supports final polishing steps.

Lesson 1 • Analytical Method Validation Concepts

Defines specificity, linearity, accuracy, precision, and detection limits for electrophoretic methods. Establishes the validation vocabulary used throughout this chapter.

Lesson 2 • Documentation and Data Integrity

Addresses laboratory notebook standards, electronic records, and audit trail requirements. Proper documentation supports regulatory submissions and internal quality audits.

Lesson 3 • System Suitability and Controls

Covers reference standards, positive and negative controls, and system suitability tests. Ensures each run meets predefined performance criteria before results are accepted.

Lesson 4 • Method Transfer and Robustness Testing

Guides inter-laboratory transfer studies and deliberate parameter variation to assess robustness. Ensures methods perform consistently across sites and operators.