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RNA Research Solutions

RNA Products &
Targeted Delivery

Catalog RNAs, custom RNA synthesis, IVT reagents and LNP formulation for cell-based and in vivo research.

Linear mRNAsaRNATargeted LNP development
RNA production and delivery workflowRNA raw materials connect to catalog or custom RNA, lipid nanoparticle formulation, and protein expression. The nanoparticle is a schematic illustration. Reagents and KitsCATALOG + CUSTOMFUNCTIONAL READOUTSTARGETED LNP DESIGNBuild your RNAChoose your cargoEvaluate expressionSelect lipids & ligands mRNA-LNP

mRNA–tLNP Services

Targeted LNP
Development

Development objectives

Define the target cell or tissue, formulation approach and evaluation endpoints. Assess expression, distribution and tolerability in the selected model.

Discuss your targeting project ↗

In the quote form, use Other additional requirements to describe your target cell or tissue, formulation needs, and planned readouts.

Why targeting? Systemic LNP delivery often favors the liver. Targeted-delivery research seeks to reach intended cell populations, including extrahepatic targets, and produce a measurable functional response.

01

Target cells and tissues

Specify the target cell or tissue, candidate receptor, experimental model, and administration route.

02

Expression and editing

Plan protein-expression or editing readouts alongside RNA-associated uptake measurements.

03

Selectivity and tolerability

Choose target and non-target comparisons, with relevant viability or response measurements.

Service Methods

Targeting Approaches
and Formulation

Ligand conjugation supports receptor-directed approaches. SORT uses LNP composition and component ratios to investigate organ-selective delivery.

Ligand-functionalized LNP and receptor-bearing target cellA schematic shows RNA inside a lipid nanoparticle, targeting ligands on its surface and a candidate interaction with receptors on a target-cell membrane. This is a design concept, not experimental validation. Ligand-functionalized LNPReceptor-bearing target cellRNA cargoTargeting ligandCandidate receptor Intended interaction
Ligand–receptor interaction (schematic). SORT uses a separate, composition-based formulation approach.
Targeting Options

Ligand Conjugation and SORT

Antibody, nanobody and peptide conjugation, plus SORT-based lipid formulation.

  • AntibodiesReceptor-directed recognition strategies.
  • NanobodiesCompact antibody-derived binding ligands.
  • PeptidesSequence-defined targeting ligands.
  • SORT (Organ Targeting)Selective organ targeting through LNP composition and component ratios.

Select the conjugation or formulation approach for the intended cargo and model. SORT reference: Cheng et al., Nature Nanotechnology (2020) ↗

01 / DEFINE

Target & readout

Agree on the cargo, intended destination, receptor strategy, model, and functional success criteria.

02 / DESIGN

Ligand & formulation

Plan ligand conjugation and lipid composition around RNA requirements and the targeting hypothesis.

03 / FORMULATE

Microfluidic assembly

Encapsulate the RNA and characterize particle size, PDI, encapsulation, and RNA content.

04 / EVALUATE

QC & model assessment

Review analytical results and define uptake, expression, selectivity, or editing studies with the project team.

The formulation and analytical package are agreed per project. Biological testing, execution responsibilities, and any optimization rounds are scoped separately.

Service Capabilities

RNA Synthesis, Formulation
and Analytical Support

RNA → FORMULATION

Catalog and custom RNA

Connect catalog reporter RNAs or custom RNA synthesis with LNP development. Discuss existing cargo for project assessment.

LIGAND + LIPID DESIGN

Cell and organ targeting

Ligand conjugation and SORT formulation provide approaches for cell- and organ-targeting research.

PROCESS + CHARACTERIZATION

Microfluidic encapsulation

Pair formulation with size, PDI, Zeta potential, encapsulation and loading analyses; discuss Cryo-EM requirements.

TRACKING + EXPRESSION

Reporter RNA tools

Use Cy5-labeled, EGFP, or luciferase reporter RNAs to design informative delivery experiments.

Research applicationsImmune-cell deliveryIn vivo cell engineeringTargeted gene editingExtrahepatic delivery

Reporter RNA Applications

RNA Tracking
and Protein Expression

Evaluate RNA-associated uptake and localization alongside EGFP fluorescence or luciferase expression.

R1011 · Cy5 EGFP mRNA

EZ Cap™ Cy5 EGFP mRNA
(5-moUTP)

A fluorescently labeled reporter RNA that connects RNA tracking with a protein-expression readout.

Cy5 · RNA-associated signalVisualize labeled RNA uptake and localization.
EGFP · Functional expressionMeasure expression of the encoded reporter.
View product & specifications ↗
Two readouts in one experiment. 293T cells, 24 h post-transfection. Cy5 signal alone does not establish RNA integrity or endosomal escape.
R1010 · Cy5 Firefly Luciferase mRNA

EZ Cap™ Cy5 Firefly Luciferase mRNA
(5-moUTP)

Combine fluorescent RNA tracking with a bioluminescent readout of reporter protein expression.

Cy5 · RNA-associated signalStudy labeled RNA localization and tissue distribution.
Firefly luciferase · Functional expressionMeasure reporter expression using an appropriate luciferase substrate.
View R1010 & specifications ↗
Track labeled RNA inside cells. BV2 cells incubated with MERLINs for 2, 4 and 6 h. DAPI (blue), LysoTracker (green), Cy5-mRNA (red). Source: Shao et al., Science Advances 11, eads6613 (2025), as shown on the R1010 product page ↗. APExBIO supplied the mRNA; the study's delivery system is a published research formulation.
Published Applications

Delivery Formulation Comparisons

Published cell and animal studies using APExBIO reporter mRNAs.

Published research applications. The studies’ LNP formulations are not presented as APExBIO service performance data.

Compare functional expression across conditions. Luciferase activity, EGFP fluorescence and EGFP-positive cells in ARPE-19 cells, with or without H₂O₂ (n=3). Source: Science Advances, 2025;11(28):eadj0006. APExBIO supplied the reporter mRNAs.

RNA Products

Catalog RNA Products

Explore ready-to-use RNAs for delivery evaluation, protein expression, gene editing, and immune research.

9 products
FLUORESCENTLY LABELEDR1011

EZ Cap™ Cy5 EGFP mRNA

5-moUTP-modified RNA for tracking labeled RNA and EGFP expression.

Cap 1Cy5 + EGFP
View product ↗
FLUORESCENT REPORTERR1016

EZ Cap™ EGFP mRNA

5-moUTP-modified EGFP mRNA for fluorescence-based expression assays.

Cap 1EGFP
View product ↗
BIOLUMINESCENT REPORTERR1013

EZ Cap™ Firefly Luciferase mRNA

A luciferase reporter for quantitative functional-expression studies.

Cap 1Firefly luciferase
View product ↗
FLUORESCENTLY LABELEDR1010

EZ Cap™ Cy5 Firefly Luciferase mRNA

5-moUTP-modified RNA for Cy5 tracking and luciferase-expression assays.

Cap 1Cy5 + luciferase
View product ↗
BIOLUMINESCENT REPORTERR1107

Enhanced EZ Cap™ Firefly Luciferase mRNA (m1Ψ)

A modified linear reporter mRNA for protein-expression and delivery assays.

Cap 1m1Ψ
View product ↗
SELF-AMPLIFYING RNAR3002

Firefly Luciferase saRNA

A self-amplifying reporter for RNA expression and delivery research.

saRNAFirefly luciferase
View product ↗
GENE EDITINGRESEARCH TOOLS

Cas9, Cre & editor mRNAs

Explore RNA tools for gene editing and cell engineering experiments.

Cas9CreBase editors
View gene-editing mRNAs ↗
DISEASE & IMMUNEFUNCTIONAL RNAs

Cytokine & disease-related mRNAs

Browse IL-family, OVA, p53, PTEN and other functional RNA tools.

Immune researchGene function
View disease and immune mRNAs ↗
SUBCELLULAR IMAGINGPROBE RNAs

Organelle probe mRNAs

Label organelles for live-cell dynamics and super-resolution imaging.

Organelle labelingFluorescent probes
See imaging applications →

Need a different sequence, modification, or format?

Explore custom synthesis →

Featured RNA Tools · Subcellular Imaging

Organelle Probe mRNAs

Label organelles from within living cells. mRNAs encode fluorescent proteins fused to organelle-localization signals, revealing subcellular structures as they change over time.

Live-cell dynamic imaging
Follow organelle morphology, movement and network remodeling over time.
Super-resolution imaging
Resolve fine ER and mitochondrial structures with HIS-SIM, demonstrated in primary cells.
Organelle-specific, multicolor labeling
Select ER, mitochondrial or Golgi probes; combine compatible fluorescent channels to study organelle interactions.

Explore EZ Cap™ probe mRNAs (m1Ψ)

View all organelle probe mRNAs ↗
Super-resolution visualization of the ER network. ER–EGFP in primary cardiomyocytes, acquired with HIS-SIM. Scale bar: 10 μm.

Published application data: Wang et al., FASEB J. (2024) ↗. Images: wen yang, Mendeley Data, v2 ↗, CC BY 4.0. Original channels retained; dynamic snapshots arranged as a montage. These study constructs illustrate the imaging approach, rather than validation of each listed SKU. Resolution depends on the imaging system and acquisition conditions.

RNA Synthesis Services

Custom RNA Synthesis

Template preparation, RNA synthesis and purification, with optional LNP encapsulation and project-defined quality control.

01

Sequence & template

Discuss sequence requirements and DNA template preparation.

02

RNA synthesis

Define the RNA format, capping and modification strategy.

03

Purification

Select the purification approach for your construct.

04

LNP encapsulation

Add formulation and characterization to the project.

Optional
05

QC & delivery

Receive RNA or formulation with agreed documentation.

Choose your RNA formatLinear mRNASelf-amplifying RNA

Choose an RNA type and indicate whether you need LNP coating in the quote form.

Request custom RNA synthesis ↗
Quality control matched to your RNA and project +

Discuss RNA concentration, integrity, purity, capping efficiency, poly(A) characterization and additional testing appropriate to your construct. Included and optional tests are defined in the project scope.

Concentration & purityRNA integrityCapping, where applicableProject-specific documentation

Reagents and Kits

RNA Raw Materials

IVT synthesis and labeling kits, enzymes, modified nucleotides, purification reagents and LNP components.

PREPARE YOUR STARTING MATERIAL

DNA template preparation

Explore amplification and template-processing reagents for your RNA synthesis workflow.

Browse IVT reagents

Selected GMP-grade Materials

GMP-grade RNA Synthesis Reagents

Explore selected capping reagents, nucleotides, and enzymes. Grade and documentation apply to the specified product.

Explore materials ↗

Product FAQs

Frequently Asked Questions

Practical answers from our product pages: RNA selection, modifications, handling, expression and purification.

Ask our technical team ↗

01How do I choose an RNA product?

Choose EGFP or firefly luciferase mRNA to evaluate delivery and expression. Use functional mRNAs such as p53, PTEN, cytokines, Cas9 or Cre for biological studies. Consider saRNA for sustained-expression studies.

Product FAQ · R1010 / Q1 ↗

02Which RNA modification fits my application?

m1Ψ, ψUTP and 5-moUTP help modulate immunogenicity, stability and translation. Choose Cy5-UTP or biotin labeling for RNA tracking, localization and detection.

Product FAQ · R1010 / Q5 ↗

03How should I handle RNA?

Thaw on ice, gently centrifuge, aliquot and avoid repeated freeze–thaw cycles. Use RNase-free reagents and consumables. Mix RNA with transfection reagent before adding it to serum-containing medium.

Product FAQ · R1010 / Q6 ↗

04How can I troubleshoot low protein expression?

Check storage, freeze–thaw history and RNase contamination. Use reporter mRNA as a positive control. Optimize the RNA-to-reagent ratio, cell density, incubation time and detection time point.

Product FAQ · R1010 / Q7 ↗

Product and Service Inquiries

Contact APExBIO

Start with a reporter RNA or discuss a custom RNA and delivery project.

Expanded validation figure