Invader^® Technology

Transforming your productivity expectations

High throughput/scalability

Highly scalable, allowing any CLIA high-complexity lab, regardless of size or throughput requirements, to utilize the technology.

Enhanced Workflow

Invader chemistry’s advanced design can save hours in the lab and significantly enhance throughput, cost-efficiency and overall productivity.

Invader chemistry:
Bringing superior molecular solutions to any lab

The Invader chemistry is composed of two simultaneous isothermal reactions. A primary reaction specifically and accurately detects single-base pair changes, insertions, deletions and changes in gene and chromosome number for genetic, pharmacogenetic and infectious disease applications. A second reaction is used for signal amplification and result readout.

Primary Reaction

In the first reaction, two oligonucleotides, a probe and an Invader oligo, anneal to a specific DNA target sequence to generate a one-base overlapping structure if the desired sequence is present. The one-base overlapping structure is created with the probe and the Invader oligo on the target. Proprietary Cleavase^® enzymes specifically cleave the overlapping primary probes, releasing the 5' flaps plus one nucleotide.

In the primary reaction, the probes cycle rapidly on and off the target. Each time an intact probe molecule binds to the specific target in the presence of the Invader oligo, the overlapping substrate is formed and cleavage occurs. The number of flaps released is relative to the amount of target in the sample, allowing for quantitative detection of genes, chromosomes or infectious agents.

Secondary, Simultaneous Reaction

Cleaved flaps from the primary Invader reaction combine with a fluorescence resonance energy transfer (FRET) probe in a secondary, simultaneous overlapping cleavage reaction, generating a fluorescent signal. The combination of two different flap sequences, FRET oligos, and fluorophores allows for single-well biplex reactions to occur.

Final Results

Each released 5' flap from the primary reaction cycles on and off the FRET probes, enabling the secondary reaction to further amplify the target-specific signal. The two simultaneous reactions typically produce a 1-10 million-fold signal amplification during a 4-hour reaction.

Invader chemistry:
Simplifying molecular diagnostic testing

Exceptional ease of use

Adoption
Uses standard laboratory equipment and instrumentation, such as thermal cyclers and fluorescence plate readers:
cost-effective approach limits the need for additional equipment

Daily use
Common reaction conditions for all DNA targets:
promotes technologist proficiency

Analysis
Simple analysis yields objective results:
straightforward interpretation

The Invader chemistry is protected by foreign and domestic patents.

Invader® Technology