Strategic Objectives
• Master high-fidelity repair pathways for error-free sequence insertion.
• Optimize donor template architecture for maximum integration efficiency.
• Synchronize cell cycles to exploit the narrow window of HDR activity.
• Minimize non-homologous end joining and off-target insertions.
The Core Challenge
While CRISPR has revolutionized gene editing, the struggle for predictable, high-efficiency knock-ins remains the industry's greatest bottleneck.
01
The Foundations of HDR
02
The DNA Damage Response
03
The Rival Pathway
04
The Synthesis-Dependent Strand Annealing Model
05
Homologous Recombination
06
Genome Editing Nucleases
07
CRISPR-Cas9 Systems
08
Donor Template Architecture
09
Single-Stranded Oligodeoxynucleotides
10
Plasmid-Based Donors
11
Viral Vectors in HDR
12
Cell Cycle Regulation
13
The S Phase Advantage
14
Chemical Synchronization Methods
15
Nocodazole and Microtubule Inhibition
16
Enhancing HDR with Small Molecules
17
Homology Arm Design
18
Off-Target Analysis
19
Detection and Validation
20
HDR in Therapeutic Applications
21