The pace of life sciences research depends not only on new ideas, but on access to the right tools to support them. Across biopharma and diagnostics research, innovations in areas such as biomarker discovery, assay development, and antibody-based therapeutics often require reagents that are not available off the shelf. Developing these in-house can be time-consuming and technically demanding, particularly when it comes to optimization, validation, and scale-up.

Many of the challenges encountered in these projects are not new – they have already been addressed by specialist partners with established expertise. For 50 years, Vector Laboratories has supported researchers in overcoming these barriers, offering a broad range of custom reagent development capabilities that span recombinant antibody engineering, tailored immunofluorescence and immunohistochemistry reagents, bioconjugation services, and custom product formulation. With the below resource hub, explore how these services are applied in practice, from accelerating antibody development for diagnostics and therapeutics to enabling multiplex spatial biology workflows.

Antibody engineering underpins a wide range of applications across research, diagnostics, and therapeutic development. Increasingly sophisticated approaches now allow scientists to precisely tune antibody specificity, affinity, and function, delivering a level of control rarely achievable with off-the-shelf reagents. For those working with novel biomarkers, rare proteins, or proprietary drug targets, custom antibodies are often not just advantageous but essential, providing a direct route from concept to functional product.

Vector Laboratories offers end-to-end antibody engineering services, spanning sequencing and optimization through recombinant expression and purification. Their sequencing capabilities include NGS of hybridoma cells and de novo sequencing of purified antibody proteins. Once sequenced, antibodies can be reformatted using a proprietary cloning platform into virtually any format. This includes species and isotype switching, bispecific and trispecific designs, and antibody fragments such as scFv, Fab, and Fab2. They also offer chimerization services to generate antibodies with cross-species constant regions, humanization to reduce immunogenicity, Fc engineering to modulate effector function and half-life, and codon optimization to enhance expression yields.

Finally, Vector Laboratories offers royalty-free expression and purification services, producing high quality, animal-free recombinant antibodies at milligram-to-gram scale in HEK or CHO cells. Having produced more than 23,000 recombinant antibodies for pharmaceutical and biotechnology companies, diagnostic assay developers, and academic researchers worldwide, Vector Laboratories is well-positioned to support a wide range of antibody development projects. Learn how their team can support yours:

Custom chemical synthesis, like antibody engineering, enables researchers to access purpose-built reagents tailored to specific applications. Off-the-shelf products can often only take projects so far before modifications to concentration, formulation, volume, conjugate, or quality control specifications are required. In many cases, entirely new reagents are needed, such as bespoke bioconjugates that are not commercially available. Whether adapting an existing product or starting from scratch, working with an experienced provider reduces the burden of in-house synthesis. Expertise in synthetic route design, compound optimization, and validation helps projects progress much more efficiently, while certified manufacturing and quality systems ensure high purity, sterility, and consistent lot-to-lot performance.

As projects advance and processes scale, volume requirements often change, and standard catalogue sizes can become limiting. Established suppliers such as Vector Laboratories enable production to be aligned with application needs, from small-scale research quantities through to larger batch manufacture. Vector provides custom organic synthesis services spanning the design and manufacture of complex molecules, intermediates, and building blocks. Whether it’s linker design and synthesis, visualization and detection solutions, or recombinant antibody engineering, their team brings decades of expertise in route design, optimization, method development, scale-up, and quality control. All manufacturing is carried out within an ISO 9001:2015-certified facility, with flexible production volumes and the capacity to scale alongside demand.

Bioconjugation is the process of chemically linking two molecules through a stable covalent bond to create a single, functional entity. Typically, at least one component is a biomolecule, such as a protein, carbohydrate, lipid, or nucleic acid, combined with another biomolecule or a small molecule. The resulting conjugate retains the activity of each part while gaining new functionality that neither could achieve alone. A range of well-established chemistries is used to form these linkages, including amide bond formation between amines and carboxylic acids, thiol–maleimide reactions, and click chemistry approaches such as copper-catalyzed azide–alkyne cycloaddition. Bioconjugates are used in a wide range of applications across life sciences, from diagnostic tools such as ELISA-based assays to nanotechnology-enabled delivery systems.

While many standard conjugates are available, complex projects often require more tailored approaches. Custom bioconjugation allows precise control over factors such as conjugation chemistry, stoichiometry, linker design, and functional performance, ensuring the final product is optimized for its intended application. For those working with proprietary biomolecules, custom services can also streamline the design, optimization, and synthesis of unique conjugates, reducing time to translation.

The definitive bioconjugation toolbox

The BioDesign toolbox from Vector Laboratories brings together a modular set of validated bioconjugation reagents, linker technologies, and conjugation strategies to support the efficient synthesis and optimization of bioconjugate therapeutics, diagnostics, and research tools. The platform combines ready-to-use linkers with custom synthesis capabilities, allowing linker design to be tuned for specific applications. This includes improving hydrophilicity, increasing hydrodynamic volume, controlling spatial orientation, masking undesirable properties of payloads, and enabling multi-payload conjugation.

What is Click Chemistry?

Click chemistry is a widely used bioconjugation approach that enables the fast, selective, and efficient coupling of two molecules under mild conditions. These reactions are highly specific, high yielding, and directional, allowing modification at defined sites while preserving molecular structure and function. A common example is azide–alkyne coupling, achieved through copper-catalysed azide–alkyne cycloaddition (CuAAC) or strain-promoted azide–alkyne cycloaddition (SPAAC). Their reliability and compatibility with biological systems make click reactions well suited to applications ranging from drug development and biological research to materials science.

Vector Laboratories provides a comprehensive portfolio of click chemistry tools and reagents to support these workflows. The Click Chemistry Toolbox includes reagents for handle introduction and installation, reaction acceleration, detection and tagging, multifunctional linker design, and target isolation for downstream enrichment, supporting applications in biorthogonal labelling, imaging, proteomics, and assay development.

The portfolio also includes a broad range of reagents such as azide and terminal alkyne compounds, biotin azides, sortagging substrates, DBCO and TCO reagents, tetrazines, bis-sulfone conjugation reagents, accelerating ligands, and labelling kits, enabling efficient and flexible conjugation across diverse applications.

Vector Laboratories supports ADC development through its BioDesign™ offering, which combines 20+ years of linker expertise with a broad portfolio of discrete PEG linkers and modifiers. These include a range of reactive groups, linker architectures, end-capping options, ethylene oxide lengths, and cleavable formats, enabling fine control over conjugate design. By optimizing key parameters such as solubility, stability, and aggregation, these tools are helping researchers generate more effective ADC candidates. From understanding your bioconjugates’ unique challenges to selecting linker strategy and manufacturing materials at scale, learn how the BioDesign™ process can accelerate your development journey:

Glycosylation is the process by which small carbohydrate chains (glycans) are attached to proteins and lipids. It is one of the most common post-translational modifications and plays key roles in cell communication, immune recognition, and disease progression. The structural diversity of glycosylated molecules, including glycoproteins, glycolipids, and proteoglycans, and the functions they perform are therefore an increasing focus of life sciences research, with relevance in areas such as vaccine development, cancer biology, and biopharmaceutical development.

Advances in analytical technologies, including mass spectrometry and high-throughput screening and imaging, have significantly improved the ability to study glycan structure and function. Modern lectin-based tools, including Vector Laboratories’ purified lectins, lectin conjugates, and screening kits, now enable researchers to sensitively detect and characterize complex glycans across biological systems. More recently, Vector Laboratories has expanded these capabilities with the launch of its Glysite™ Explorer in situ PLA Glycan Detection Kit, the first commercially available product for the spatial visualization of protein glycosylation across a range of tissues and cell types.

Vector Laboratories brings more than five decades of glycobiology expertise, supported by a broad portfolio of glycan-binding lectins and analysis reagents for detecting glycans, profiling glycosylation, and visualizing glycan interactions in situ. Its lectins are rigorously validated for specificity and reproducibility, and are cited in more than 25,000 peer-reviewed publications. Explore the glycobiology portfolio to find reagents suited to your workflow requirements:

This year marks the 50th anniversary of Vector Laboratories. Over that time, much has changed. From its origins in IHC, the company has significantly expanded its capabilities through strategic acquisitions, including Click Chemistry Tools, Fluoroprobes, Quanta Biodesign, and its merger with Absolute Biotech. The result? A broad, integrated portfolio spanning antibody-based detection, spatial biology and IHC workflows, bioconjugation technologies, and custom development and manufacturing services – all in one place.

Today, these tools are enabling new insights into disease biology, driving biomarker discovery, and advancing therapeutics from early design through to application. Beyond supplying reagents, Vector Laboratories works as a scientific partner, collaborating with researchers to address complex challenges across fields such as oncology, neuroscience, and infectious disease. Get in touch to see how their team can support your next breakthrough.