LysoLight™ sDBCO Reagents

LysoLight™ sDBCO reagents are engineered for use with SiteClick™ Duet and Quartet antibody labeling kits. They offer robust and reproducible conjugation without compromising antibody-target affinity. Unlike amine-reactive LysoLight reagents that are useful for stochastic antibody labeling but lack site-specific labeling capabilities and may alter antibody function, LysoLight sDBCO reagents utilize sulfo-dibenzocyclooctyne (sDBCO) chemistry to enable targeted attachment of fluorescent sensors exclusively at defined azido conjugation sites.

LysoLight sDBCO reagents are formulated for stability and solubility in complex biological matrices, ensuring reliable performance across diverse experimental conditions. They generate sensitive, specific fluorescent indicators of antibody internalization into lysosomes, with broad compatibility across microscopy and flow cytometry platforms. The system integrates seamlessly with SiteClick Duet antibody labeling workflows, and resulting conjugates can be purified using Pierce™ Zeba™ Dye and Biotin Removal columns for downstream applications requiring high-purity antibody preparations.

LysoLight sDBCO features include:

• Site-specific protein conjugation—enables precise conjugation to antibodies or other proteins containing an azido tag, ensuring controlled and reproducible attachment chemistry
• Superior optical performance—delivers extremely bright fluorescent signal with no background fluorescence, providing enhanced sensitivity for detection applications
• Sensitive antibody internalization monitoring—offers highly sensitive indication of antibody internalization processes through optimized fluorescent signal characteristics
• Cathepsin-cleavable linker technology—incorporates the same cathepsin-cleavable linker chemistry utilized in established antibody-drug conjugate platforms
• Functional surrogate for ADC assessment—provides fluorescent signal as a surrogate indication of antibody-drug conjugate functionality, enabling evaluation of conjugation performance

Bioorthogonal chemistry enables precise protein conjugation

LysoLight sDBCO reagents utilize a sophisticated bioorthogonal copperless click reaction mechanism that facilitates the precise attachment of payloads to proteins containing azide moieties. This copper-free approach eliminates potential cytotoxicity concerns while maintaining exceptional specificity for the target azide groups. The bioorthogonal nature of this chemistry ensures that the conjugation reaction proceeds selectively without interfering with native biological processes or structures, making it ideal for applications requiring high fidelity in complex biological environments.

Site-specific design maximizes analytical accuracy and precision

The reagents are specifically engineered for site-specific conjugation applications, delivering superior accuracy and precision compared to traditional random labeling approaches. This targeted conjugation strategy minimizes heterogeneity in the final conjugated product, helping ensure that each labeled protein maintains consistent properties and behavior. The site-specific nature of the conjugation process is particularly critical for antibody-drug conjugate (ADC) research, where precise control over labeling positions directly impacts the reliability and reproducibility of analytical results.

Enhanced stability ensures reliable performance in complex biological systems

LysoLight sDBCO reagents demonstrate exceptional stability and solubility characteristics, offering reliable labeling performance even in challenging biological sample matrices. The stable formulation maintains consistent reactivity over extended periods, while the optimized solubility profile ensures uniform distribution and accessibility in aqueous biological systems. These properties are essential for maintaining signal integrity and preventing artifacts that could compromise data quality during lysosomal degradation studies and other complex biological analyses.

Streamlined workflow facilitates rapid conjugation and purification

The conjugation protocol using LysoLight sDBCO reagents is designed for simplicity and efficiency, requiring only the addition of the reactive reagent to azido-modified antibodies or proteins, followed by incubation and purification steps. The straightforward workflow incorporates purification using Zeba Dye and Biotin Removal columns, which effectively separate the conjugated product from unreacted components and potential interfering substances. This streamlined approach minimizes hands-on time while ensuring high-quality conjugated products suitable for downstream applications.

Integrated solution for ADC lysosomal degradation analysis

LysoLight sDBCO reagents offer researchers enhanced capabilities for investigating ADC lysosomal degradation processes for clearer insights into these critical mechanisms. When used in conjunction with SiteClick Duet Antibody Labeling kits, these reagents enable stable, site-specific labeling that drives more consistent and reliable results in biologic drug discovery programs. This integrated approach supports comprehensive characterization of ADC behavior in cellular environments, ultimately contributing to more informed decision-making in therapeutic development processes.

Custom SiteClick Antibody Labeling Service

Unlock the full potential of your antibodies with our Custom Antibody Labeling Service and customized labels. If conventional methods have failed or reduced your antibody's activity, our expert team can help. We offer SiteClick-compatible labels in bulk format, and custom labeling with a variety of detection molecules, including Alexa Fluor, LysoLight, and pHrodo dyes, as well as biotin and R-PE.