sgRNA Library Cell Pool Construction Services

Inquiry

As a preclinical CRO specializing in oncology, Alfa Cytology offers sgRNA library cell pool construction services utilizing CRISPR/Cas9 gene editing technology to generate highly efficient sgRNA libraries covering genome-wide or targeted gene sets, providing high-throughput screening tools for your cancer gene function studies and drug target discovery. Through stable integration of large-scale sgRNA libraries into host cells, we generate edited cell pools with broad coverage and high uniformity, accelerating your oncology drug target discovery programs.

Introduction to sgRNA Library Cell Pool

sgRNA library cell pools are collections of genetically modified cells established by stably integrating large-scale sgRNA libraries into host cell genomes for high-throughput functional gene screening. The CRISPR/Cas9 system directs Cas9 to target genes via sgRNAs, inducing indels through the NHEJ repair pathway to achieve gene knockout. Unlike single-gene editing, sgRNA libraries enable genome-wide or targeted gene set screening through parallel delivery of tens of thousands of sgRNAs (3–6 per gene), followed by antibiotic selection to enrich stably transduced cells. Under selective pressure (e.g., drug treatment, co-culture), comparing sgRNA enrichment (positive selection) or depletion (negative selection) allows unbiased identification of genes associated with tumor growth, drug resistance, metastasis, and immune evasion. These libraries have become essential tools in cancer functional genomics, enabling systematic discovery of tumor driver genes, resistance-associated genes, and synthetic lethal targets, providing robust support for precision oncology strategies and drug target discovery.

Fig. 1 sgRNA library cell pool construction.

Our Services

Thanks to extensive experience in library construction and screening across diverse tumor cell lines, Alfa Cytology provides professional sgRNA-edited cell line pool construction services dedicated to transforming your gene function screening needs into edited cell line libraries with high coverage, excellent uniformity, and thorough validation. We ensure that every sgRNA-edited cell line library we deliver exhibits comprehensive gene coverage, superior library uniformity, and reliable functional performance, providing powerful screening tools for your oncology target discovery and mechanistic studies.

Service Details

Service Step	Service Details	Turnaround Time
sgRNA Library Design	Design sgRNA libraries with 3–6 sgRNAs per gene plus negative controls, and assess targeting efficiency and specificity in silico. Genome-wide/custom gene set sgRNA design 3–6 sgRNAs per gene + negative controls Bioinformatics assessment of targeting efficiency and off-target risks	1–2 weeks
sgRNA Library Synthesis	Chip-based large-scale sgRNA oligo pool synthesis Cloning into CRISPR/Cas9 expression vectors Transformation into competent cells	3–4 weeks
Library Quality Control and Amplification	NGS validation (coverage >99%, accuracy >80%, uniformity <10) Library amplification and transfection-grade plasmid DNA extraction	2–3 weeks
Lentivirus Packaging	Large-scale lentivirus packaging Viral titer determination (>10⁸ TU/mL)	2–3 weeks
Library Cell Pool Construction	MOI 0.3–0.5 low multiplicity of infection transduction Antibiotic selection to enrich stably integrated cells Maintenance of >500× library coverage	6–9 weeks
Library Quality Control Validation	Validate sgRNA abundance in the cell pool by NGS to confirm coverage >99% and uniformity <10, ensuring library quality. NGS validation of sgRNA abundance Confirmation of coverage >99% and uniformity <10	2–3 weeks
High-Throughput Screening	Apply selective pressure (drugs/conditions) according to experimental design and collect cell samples before and after screening.	2–3 weeks
NGS Sequencing and Data Analysis	Genomic DNA extraction and sgRNA amplification NGS sequencing (>500× coverage) sgRNA enrichment/depletion analysis Candidate gene identification and ranking Pathway and functional enrichment analysis (GO, KEGG, etc.)	4–6 weeks

Deliverables

sgRNA library plasmid (glycerol stock or transfection-grade plasmid DNA)
sgRNA library lentivirus (>10⁸ TU/mL, optional)
sgRNA library cell pool (cryopreserved, ≥ 1×10⁷ cells per pool)
Library NGS QC report (coverage, accuracy, uniformity)
High-throughput screening NGS sequencing data
Bioinformatics analysis report (candidate gene list, pathway enrichment analysis)
STR cell line authentication report
Mycoplasma testing report

Application

Genome-wide tumor driver gene discovery
Drug resistance gene screening
Synthetic lethal target identification
Immuno-oncology target discovery
Tumor microenvironment-related gene screening

Signaling pathway key node gene identification
Tumor metabolism key gene screening
Combination therapy target discovery and validation
CRISPRa/i gain-of-function/loss-of-function screening
Non-coding RNA functional screening

Oncology Research Areas

Our sgRNA library cell pool construction services support a broad spectrum of oncology research, from fundamental cancer biology to translational drug discovery. By providing pooled CRISPR-based cellular models across diverse cancer types, we enable researchers to systematically map genetic dependencies, identify and validate novel therapeutic targets, and elucidate drug response and resistance mechanisms at scale. Alfa Cytology's platform is adaptable to virtually any tumor cell line of interest, empowering your research across the full spectrum of oncology disciplines, including but not limited to:

From discovery to delivery, Alfa Cytology is your trusted preclinical CRO partner in exosome-driven oncology innovation. With deep expertise in tumor biology and rigorous quality systems, we accelerate your exosome-based programs from concept to IND-enabling data with speed, precision, and reproducibility. Please don't hesitate to contact us to discuss your project requirements and receive a customized service proposal.

For research use only.

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Project Description

Please note that we are not a pharmacy or clinic, so we are unable to see patients and do not offer diagnostic and treatment services for individuals.