AA3-DLin
Based on 1 Customer Validation
AA3-DLin is a biodegradable ionizable cationic lipid (pKa = 5.8). AA3-DLin is used to combine mRNA with lipid nanoparticles (LNPs) for delivery, thereby achieving endosomal escape and cytoplasmic release. AA3-DLin can be used in research on type 2 diabetes, steroid-resistant asthma, lung cancer, ischemic stroke, breast cancer, melanoma, and COVID-19.
For research use only. We do not sell to patients.
- Purity : 99.0%
- CAS No.: 3027565-91-6
- Formula: C44H78N2O4
- Molecular Weight:699.10
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Storage:
Solution, -20°C, 2 years
Biological Activity
Description
In Vitro
AA3-DLin LNPs (0-64 µg/mL; 24 h) exhibit low cytotoxicity in differentiated C2C12 myotubes[1].
The AA3-DLin-based LNP formulation (4 h) demonstrates efficient cellular uptake across LLC, B16F10, and 4T1 cancer cell lines, and this uptake is not altered by nebulization[3].
The AA3-DLin-based LNP formulation (4-48 h) effectively mediates gene transfection and PD-L1 silencing in both murine and human lung cancer cell lines, and this efficacy is preserved after nebulization[3].
The AA3-DLin-based LNP formulation (8-72 h) effectively delivers mscFv to LLC, B16F10, and 4T1 cells, leading to intracellular expression of anti-DDR1 scFv and its sustained secretion[3].
AA3-Dlin LNPs (0.5-4 h) are efficiently internalized by HEK 293, HeLa, 4T1, and B16F10 cells in a time-dependent manner[5].
AA3-Dlin LNPs (0.5 μg/mL; 4 h) facilitate endosomal escape to release mRNA into the cytosol of HEK 293, HeLa, 4T1, and B16F10 cells[5].
The optimized A12 AA3-DLin LNP formulation (0.1 μg; 24 h) demonstrates superior in vitro mRNA transfection efficacy in Hek 293 cells compared to MC3 LNPs, lipofectamine 3000, and ALC-0315 LNPs, with no observed cytotoxicity[6].
AA3-DLin LNPs (72 h) demonstrate excellent mRNA delivery efficiency and can be used for mRNA vaccine development and gene therapy research[8].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only. Further protocols information, click here.
In Vivo
AA3-DLin (2-10 μg spike mRNA-loaded AA3-DLin vaccines; i.m.; prime at day 0 and boost at day 14) COVID-19 vaccines induce strong spike-specific antibody responses in a dose-dependent manner[6].
AA3-DLin LNPs are an excellent mRNA delivery platform that successfully induces strong immunogenicity in BALB/c mice, demonstrating potential for vaccine development and gene therapy[8].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
Chemical Information
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CAS No. 3027565-91-6
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Appearance Liquid
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Molecular Weight 699.10
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Formula C44H78N2O4
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Color Light yellow to yellow
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SMILES
CCCCC/C=C\C/C=C\CCCCCCCC(OCCN1CCN(CC1)CCOC(CCCCCCC/C=C\C/C=C\CCCCC)=O)=O
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
Solution, -20°C, 2 years
Protocols
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RNA extraction experimental
By lysing cells, releasing RNA, and removing impurities such as proteins and DNA, high-purity RNA products are finally obtained. The commonly used traditional method is the guanidine isothiocyanate/phenol/chloroform method (Trizol), which is suitable for a variety of animal materials including animal tissues, microorganisms, cultured cells, etc., and most plant materials.
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Research Protocol for Metabolic Diseases
AMP-activated protein kinase, AMPK, is a conserved cellular energy sensor that responds to reduced cellular energy status and coordinates metabolism by increasing ATP-generating catabolic pathways while suppressing ATP-consuming anabolic processes. In metabolic disease research, the AMPK pathway is experimentally relevant because it regulates hepatic lipid synthesis, fatty acid oxidation, glucose production, skeletal-muscle glucose disposal, mTORC1-linked biosynthesis, autophagy, mitochondrial homeostasis, and whole-body energy balance. The central pathway logic is that energy stress, metformin, exercise-like stimulation, or direct AMPK activators increase AMPKα Thr172 phosphorylation and downstream substrate phosphorylation, including ACC and RAPTOR. Phosphorylation of ACC suppresses lipogenesis and supports fatty acid oxidation, whereas phosphorylation of RAPTOR suppresses mTORC1 signaling and links cellular energy status to growth and protein synthesis control. The pathway is linked
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Breast Cancer Modeling
Breast cancer is a heterogeneous cancer, and it has been distinguished into four subtypes: luminal A, luminal B, HER2-positive and basal-like. Molecular mutations, epigenetic alterations, hormone exposure and immune microenvironment are related to the progression of breast cancer.
Purity & Documentation
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Data Sheet (268 KB)
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SDS (251 KB)
- English - EN (251 KB)
- Français - FR (251 KB)
- Deutsch - DE (251 KB)
- Norwegian - NO (251 KB)
- Español - ES (251 KB)
- Swedish - SV (251 KB)
- Italian - IT (251 KB)
- Korean - KR (251 KB)
- Portuguese - PT (251 KB)
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Handling Instructions (2659 KB)
References
[3]. Hu B, et al. Modulating tumor collagen fiber alignment for enhanced lung cancer immunotherapy via inhaled RNA. Nature communications. 2025 Aug 30;16(1):8120. [Content Brief]
[5]. Li F, et al. mRNA lipid nanoparticle-mediated pyroptosis sensitizes immunologically cold tumors to checkpoint immunotherapy. Nature communications. 2023 Jul 15;14(1):4223. [Content Brief]
[6]. Li Z, et al. Enzyme-Catalyzed One-Step Synthesis of Ionizable Cationic Lipids for Lipid Nanoparticle-Based mRNA COVID-19 Vaccines. ACS nano. 2022 Nov 22;16(11):18936-18950. [Content Brief]
Calculators
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)