Transiently Expressed CAR RNA Copy Number Quantification (RT-qPCR/dPCR) Service

Online Inquiry

Background Service What We Can Offer Workflow Highlights FAQs Contact

Creative Biolabs provides Transiently Expressed CAR RNA Copy Number Quantification (RT-qPCR / dPCR) Services to support precise monitoring of transient CAR expression in non-integrative platforms such as LNP-mRNA and circular RNA. This service addresses challenges in evaluating in vivo degradation kinetics, expression duration, and clearance profiles. Through validated RT-qPCR and digital PCR workflows, Creative Biolabs enables sensitive quantification of CAR RNA copy numbers in peripheral blood, supporting pharmacokinetic characterization, expression profiling, and translational development of transient CAR-based therapeutics.

Introduction

Non-viral CAR engineered cell therapies utilize transient mRNA expression to mitigate insertional mutagenesis risks associated with viral vectors. Precise quantification of transient mRNA transcripts is crucial for determining translation efficiency, pharmacokinetic persistence, and batch consistency. Peer-reviewed studies demonstrate that RT-qPCR and digital PCR (dPCR) provide unmatched sensitivity and reproducibility for detecting low-abundance transcripts and monitoring mRNA clearance. Combining probe-based fluorogenic detection with precise partitioning, these methodologies deliver reliable copy number data essential for preclinical proof-of-concept and clinical quality management.

Fig.1 General introduction to qPCR techniques. (OA Literature) Fig.1 Review of quantitative PCR methodology.¹

Service

Transient expression systems, such as mRNA electroporation or lipid nanoparticle (LNP)-mediated transfection, represent a promising paradigm in CAR-T and CAR-NK cell therapies by minimizing the risks of permanent genomic integration and off-target toxicities. However, robust development requires precise quantification of intracellular and extracellular CAR mRNA dynamics. Creative Biolabs provides quantitative RNA analysis solutions specifically designed for transient CAR platforms, including LNP-delivered mRNA CARs and circular RNA-based CAR constructs. Our assays are optimized for sensitive detection of CAR transcripts from peripheral blood RNA samples across multiple clinical and preclinical time points. Our service can support your project through:

Absolute or relative CAR RNA copy number quantification using RT-qPCR or digital PCR.
Longitudinal monitoring of transient CAR expression kinetics.
Pharmacokinetic (PK) profiling of CAR transcript degradation and clearance.
Comparative evaluation of different RNA delivery formulations or construct designs.
Method development, assay optimization, and analytical validation for research and translational studies.

Discover How We Can Help - Request a Consultation.

What We Can Offer

Analysis of Peripheral Blood CAR Transgene Integration Copy Number (VCN) Analysis. (Creative Biolabs Original)

Creative Biolabs provides full transient CAR RNA monitoring solutions for non-integrative CAR therapies, including RT-qPCR/dPCR quantification, custom CAR transcript assay design, and detailed pharmacokinetic and expression kinetics analysis.

Our Workflow

Clients shall provide pharmacokinetic time-point total RNA samples, CAR construct sequences or annotations, and the detailed study protocol.

Workflow of Peripheral Blood CAR Transgene Integration Copy Number (VCN) Analysis. (Creative Biolabs Original)

Clients will receive CAR RNA copy number data, pharmacokinetic and expression kinetics reports, QC and statistical results, publication-grade charts, plus raw and processed datasets on request.

Core Benefits

Robust assay development, optimization, and performance evaluation, including specificity, sensitivity, linearity, precision, and reproducibility assessments.
Standardized sample processing and rigorous quality control procedures to ensure reliable and consistent quantitative results.
Flexible study designs supporting exploratory research, preclinical studies, and advanced translational programs with scalable analytical capacity.

FAQs

Q: Why should I choose dPCR over RT-qPCR for CAR RNA copy number quantification?

A: dPCR provides absolute quantification without reliance on external reference standards, making it less susceptible to variations in amplification efficiency or standard curve degradation. It is particularly advantageous for detecting low-abundance CAR transcripts or samples containing trace PCR inhibitors. However, RT-qPCR remains an efficient, cost-effective choice for high-throughput screening across broad dynamic ranges.

Q: How do you ensure the assay targets the CAR RNA and not endogenous host cell genes?

A: Our bioinformatic design team targets unique, synthetic sequences within your CAR construct, such as the scFv junction, specific linker regions, or customized untranslated regions (UTRs). All primer and probe candidates undergo rigorous alignment checks against host genomes to ensure zero non-specific cross-reactivity.

Q3: Can this assay differentiate between transiently expressed mRNA and genomic DNA?

A: Yes. We incorporate DNase I digestion steps during RNA extraction to eliminate residual plasmid or genomic DNA contamination. Furthermore, primers can be designed to span exon-exon junctions or synthetic poly(A) boundaries, ensuring that signal generation is strictly specific to processed RNA transcripts.

Partner with Us

Creative Biolabs provides comprehensive Transiently Expressed CAR RNA Copy Number Quantification (RT-qPCR / dPCR) Services to support the development of non-integrative CAR therapeutics. By combining sensitive RNA quantification technologies with robust pharmacokinetic analysis, we help researchers characterize CAR transcript expression, degradation kinetics, and clearance profiles with confidence. Our flexible workflows, customized assay development, and experienced scientific support enable efficient evaluation throughout preclinical and translational development. To learn more about our Transiently Expressed CAR RNA Copy Number Quantification (RT-qPCR / dPCR) Service, discuss your project requirements, or request a customized study design, please contact us.

Reference

Yamamoto, Syunsuke et al. "Quantitative PCR methodology with a volume-based unit for the sophisticated cellular kinetic evaluation of chimeric antigen receptor T cells." Scientific Reports vol. 10,1 17884. 21 Oct. 2020. Distributed under Open Access License CC BY 4.0, without modification. https://doi.org/10.1038/s41598-020-74927-8

All products and services are For Research Use Only and CANNOT be used in the treatment or diagnosis of disease.