Vector Construction Services for Cancer Research

High-quality vector systems are essential for generating isogenic cancer cell lines, establishing reporter-based screening platforms, producing recombinant proteins, and constructing animal models. Alfa Cytology provides comprehensive vector construction services designed to accelerate your cancer research and drug discovery programs. Leveraging an advanced molecular biology platform that integrates multiple vector systems, including gene overexpression, RNA interference, CRISPR/Cas editing vectors, promoter reporter constructs, and protein-protein interaction tools, our senior scientists are committed to delivering high-quality, reproducible vector solutions tailored to meet your specific research needs.

Introduction to Vector Construction

Vector construction is a foundational enabling technology in modern cancer research, providing essential molecular tools for studying gene function, modeling disease mechanisms, and evaluating therapeutic targets. As a critical bridge connecting genotype to phenotype, vector systems enable controlled expression regulation, functional interference, or precise modification of specific genes, thereby dissecting tumor initiation, progression, and drug resistance at both cellular and whole-animal levels. From constitutive overexpression and inducible shRNA knockdown to CRISPR/Cas genome editing and promoter-driven reporter assays, vector systems are integral to gene function studies, disease model development, and drug target evaluation. Different vectors serve distinct applications: constitutive overexpression vectors for sustained pathway activation; inducible systems for temporally controlled gene activation or silencing; RNA interference vectors for efficient target gene knockdown; CRISPR/Cas vectors for genomic knockout, knock-in, or point mutation; promoter reporter vectors for transcriptional regulation studies and high-throughput screening; and protein-protein interaction tools (e.g., BiFC, GST pull-down) for revealing tumor-associated protein complex assembly and dynamics.

Fig. 1 Construction of the EpCAM Overexpression Vector. (Wang B, et al.; 2025)

Our Services

Alfa Cytology's vector construction services span the entire workflow from gene function research to drug discovery, encompassing gene overexpression, RNA interference, CRISPR/Cas editing, promoter reporter genes, protein-protein interaction, custom gene synthesis, high-throughput site-directed mutagenesis, and full-length cloning. Each construct undergoes rigorous quality control and full-length sequencing validation to ensure reliability and reproducibility in downstream applications.

Gene Overexpression Services

We provide customized gene overexpression vectors supporting constitutive or inducible expression of genes of interest. Featuring a range of promoters (CMV, EF1α, LTR, tissue-specific promoters, and inducible systems), our vectors are compatible with both transient and stable transfection.

RNA Interference Vector Services

By designing and constructing interference vectors targeting the gene of interest, and following knockdown efficiency validation, this service supports transient and stable silencing across multiple cell lines, with multiple promoter options (U6, H1, CMV) and inducible shRNA systems.

CRISPR/Cas Gene Editing Vector Services

CRISPR/Cas vector construction services are designed for precise genome editing, encompassing multiple Cas9 variants (SpCas9, SaCas9, etc.), nickase (Cas9n), and dead Cas9 (dCas9). Suitable for gene knockout, knock-in, and transcriptional regulation (CRISPRi/a), with multiple selection markers and delivery formats (plasmid, lentivirus, AAV).

Promoter Reporter Vector Services

Promoter reporter vectors are constructed by cloning a promoter of interest upstream of a reporter gene (luciferase, GFP, or RFP) to enable quantitative analysis of transcriptional activity. This service supports the identification of regulatory elements, validation of transcription factor binding, and assessment of promoter responses under various experimental conditions.

Protein-Protein Interaction Vector Services

Specialized vectors are provided for studying protein-protein interactions, encompassing yeast two-hybrid (Y2H), mammalian two-hybrid, and split luciferase systems. This service includes bait and prey construct design, fusion protein optimization, and validation in appropriate screening systems, supporting interactome mapping and mechanistic studies.

Custom Gene Synthesis Services

Supporting synthesis from short fragments (oligonucleotides) to long genes (>10 kb), this service covers routine cloning, codon optimization, site-directed mutagenesis, multi-site mutation introduction, complex mutant library construction, and multi-gene assembly, with full-length sequencing validation ensuring 100% sequence accuracy.

High-Throughput Site-Directed Mutagenesis Services

High-throughput site-directed mutagenesis services are provided for large-scale mutation studies or multi-variant generation, supporting single-site or combinatorial mutations. This service enables systematic functional analysis, protein engineering, and mutation scanning.

Full-Length RACE Cloning Services

Full-length gene cloning services based on RACE (Rapid Amplification of cDNA Ends) are provided, enabling acquisition of complete cDNA clones from limited RNA samples, including accurate 5′ and 3′ untranslated regions (UTRs). This service supports comprehensive gene characterization, promoter analysis, and gene isoform functional studies.

Available Vector Systems

Alfa Cytology offers a comprehensive portfolio of vector systems to support precise gene regulation across the full spectrum of cancer research. The table below compares various vector technologies to help you select the most suitable option for your specific research needs.

Applications of Vector Construction Services

Alfa Cytology's vector construction services span every stage of cancer research, from basic mechanistic exploration to preclinical drug development and clinical translation support, all enabled by diverse vector systems for precise research. Our scientists can flexibly combine solutions based on the needs of each research stage, helping you quickly identify the right solution.

Target Discovery and Validation

• Genome-wide functional screening using CRISPR or RNAi libraries to systematically identify tumor dependency genes.
• Synthetic lethality screening to uncover novel therapeutic targets and expand the druggable space.
• Promoter reporter systems to dissect non-coding region function and reveal new mechanisms of transcriptional regulation.
• Gain-of-function and loss-of-function studies using overexpression and knockdown vectors to validate target biology.

Mechanistic Studies and Drug Resistance Elucidation

• Protein-protein interaction vectors to dissect signaling networks and mechanisms involving the target.
• Reporter systems to assess pathway involvement and downstream effects, elucidating regulatory logic.
• Drug resistance model vector systems to simulate tumor resistance evolution and dissect resistance mechanisms.
• Multi-gene assembly and pathway reconstruction to systematically study synergistic driver events in tumor initiation and progression.

Lead Compound and Candidate Drug Support

• Reporter systems for high-throughput drug screening to support lead compound discovery and optimization.
• Expression and silencing vectors to validate target dependency and assess candidate drug specificity.
• Custom vectors for mechanism confirmation and off-target effect assessment of candidate drugs.

Preclinical Evaluation

• Construction of drug resistance and target dependency models to support preclinical efficacy and safety assessment.
• Custom vectors for IND-enabling data packages to support regulatory submissions and translational research.
• In vitro and in vivo efficacy evaluation models to support anti-tumor activity validation and dose optimization of candidate drugs.

Why Choose Us?

Alfa Cytology combines a cutting-edge molecular biology platform with rigorous project management and exceptional scientific expertise. Whether you are exploring novel gene functions, building reporter systems, or advancing therapeutic candidates toward the clinic, we are your trusted partner for accelerating cancer research. Ready to accelerate your cancer research with our vector construction services? Contact us today to discuss your project and discover how Alfa Cytology can support your drug discovery journey, from target discovery to IND-enabling studies.

For research use only.