SM-102
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Iso-A11B5C1 is an ionizable lipid. The iso-A11B5C1 LNP demonstrates a high level of muscle-specific mRNA delivery efficiency. exhibiting transfection efficiency comparable to the commercially available lipid SM-102, while considerably reducing inadvertent mRNA expression in main organs such as the liver and spleen.Additionally, study results show that intramuscular administration of mRNA formulated with iso-A11B5C1 LNP caused potent cellular immune responses, even with limited expression observed in lymph nodes.
| CAS No. | Not available |
| Chemical Name | Iso-A11B5C1 |
| Synonyms | IsoA11B5C1, Iso A11B5C1, iso-A11B5C1, H3 |
| SMILES | CCCCCCCC/C=C\CCCCCCCCNC(=O)C(CCCCCOC(=O)CCC(C)CCCCC)NCCN1CCCC1 |
| Formula | C41H79N3O3 |
| M.Wt | 662.10 |
| Purity | ELSD-HPLC>95% |
| Storage | Pure form: −20 °C, 1 year; In solvent: −80 °C, 6 months; −20 °C, 1 month. Sealed and protected from light. |
| Shipping condition | Ships from Shanghai. Pure lipid is stable during ice-pack transport. |
| Publication | Chen J, Xu Y, Zhou M, et al. Combinatorial design of ionizable lipid nanoparticles for muscle-selective mRNA delivery with minimized off-target effects. Proceedings of the National Academy of Sciences of the United States of America. 2023;120(50):e2309472120. |
| Component | mol% | Role |
|---|---|---|
| Iso-A11B5C1 | 60 | Ionizable lipid |
| DOPE | 10 | Helper phospholipid |
| Cholesterol | 29 | Sterol |
| C14-PEG2000 (14:0 PEG2000 PE) | 1 | PEG lipid |
| Reported total | 100 | Source values retained |
The cited formulation and available component molecular weights are pre-filled. Enter the exact molecular weight for any substituted material before calculating.
| Component | Molecular weight (g/mol) | Literature molar ratio |
|---|---|---|
| Iso-A11B5C1 | ||
| DOPE | ||
| Cholesterol | ||
| C14-PEG2000 (14:0 PEG2000 PE) |
| Component | Normalized mol% | Amount (µmol) | Required weight (mg) |
|---|---|---|---|
| Total | 100.000% | — | — |
Research planning aid only. Results cover lipid component weights and do not include RNA, buffer, solvent, process loss or an N/P ratio.
Iso-A11B5C1 and SM-102 produced comparable editing at the injected quadriceps. SM-102 produced 83.83% liver and 72.67% spleen editing, whereas editing in those tissues was undetectable with iso-A11B5C1 in the reported experiment.
Cre mRNA; mTmG reporter mice; 0.5 mg/kg IM; 36 h · Main Figure 3C-E and text, PNAS p. 5Relative to SM-102 LNP, iso-A11B5C1 LNP showed 42-fold higher transfection in HeLa cells but 28-fold and 24-fold lower transfection in HepG2 cells and splenocytes, respectively.
mLuc LNP; HeLa, HepG2 and primary splenocyte comparison · Main Figure 3A and text, PNAS p. 4Iso-A11B5C1 LNP carrying full-length Trp2 mRNA significantly slowed B16-F10-Luc tumor growth and outperformed the MC3 comparator; it also increased IFN-gamma-positive CD8 T cells and intratumoral CD8 T-cell infiltration versus MC3. The authors reported lower efficacy than the SM-102 group.
C57BL/6 melanoma model; two LNP/mTrp2 doses on days 7 and 12 after inoculation; dose not reported · Main Figure 5 and text, PNAS p. 7Four hours after IM dosing, the measured GM-CSF, IFN-gamma, IL-1alpha, IL-5, IL-6 and TNF-alpha levels did not differ discernibly between iso-A11B5C1-treated and PBS-treated mice.
BALB/c mice; 0.5 mg/kg IM; acute cytokine assessment at 4 h · Supplementary Figure S8 and main text, PNAS p. 5The product molecular weight is prefilled when available and remains editable. Confirm solvent compatibility and solubility before preparation.
Solvent volumes update from the molecular weight above.
| Mass | 1 mM | 5 mM | 10 mM |
|---|---|---|---|
| 10 mg | 15.1035 mL | 3.0207 mL | 1.5103 mL |
| 25 mg | 37.7586 mL | 7.5517 mL | 3.7759 mL |
| 50 mg | 75.5173 mL | 15.1035 mL | 7.5517 mL |
| 100 mg | 151.0346 mL | 30.2069 mL | 15.1035 mL |
| 250 mg | 377.5865 mL | 75.5173 mL | 37.7586 mL |
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