Rugonersen (RG6091; RO7248824) is a locked nucleic acid (LNA)-modified antisense oligonucleotide (ASO) that reduces ubiquitin protein ligase E3A (UBE3A) silencing. Angelman syndrome (AS) is a severe neurodevelopmental disorder caused by the loss of the neuronal E3 ligase UBE3A, and Rugonersen has been utilized in the research of AS.

Physicochemical Properties

CAS #	2591587-57-2
Appearance	White to off-white solid powder
HS Tariff Code	2934.99.9001
Storage	Powder-20°C 3 years 4°C 2 years In solvent -80°C 6 months -20°C 1 month Note: Please store this product in a sealed and protected environment, avoid exposure to moisture.
Shipping Condition	Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)

Biological Activity

Targets	ubiquitin-protein ligase E3A (UBE3A)[1]
ln Vitro	In neurons from Angelman syndrome (AS), RO7248824 (0-10 μM) exhibits nanomolar potency against UBE3A-ATS (EC50=26.3 nM), UBE3A mRNA upregulation (EC50=15.4 nM), and UBE3A protein upregulation (EC50=24.8 nM)[1].
ln Vivo	Rugonersen (RO7248824) (24 mg/monkey; it; for 8-85 d) induced a strong, long-lasting (up to 3 months) paternal reactivation of UBE3A mRNA/protein across important monkey brain areas, and it is well tolerated without causing tissue pathology or harmful in-life effects[1]. Rugonersen (150 μg; icv; single dosage) specifically and potently decreases UBE3A-ATS in male cynomolgus monkeys[1] while simultaneously upregulating UBE3A mRNA and protein[1].
Animal Protocol	Animal/Disease Models: Male cynomolgus monkey[1] Doses: 24 mg per monkey Route of Administration: Intrathecal injection; single dose or twice dose with 2 weeks apart; sacrificed at 8, 15, 29, 57, and 85 days after the last dose Experimental Results: Resulted a long duration of action on paternal UBE3A reactivation in NHP brains after IT delivery. Animal/Disease Models: WT and AS Ube3a m-/p+ mice adult mice (10-12 weeks old)[1] Doses: 150 μg per mice Route of Administration: Intracerebroventricular injection; single dose; harvested at 2 weeks post injection Experimental Results: Revealed a steep relationship between UBE3A-ATS knock-down and UBE3A mRNA/protein upregulation, whereby an almost 90% downregulation was needed to achieve a 50% upregulation, respectively.
References	[1]. Angelman syndrome patient neuron screen identifies a potent and selective clinical ASO targeting UBE3A-ATS with long lasting effect in cynomolgus monkey. bioRxiv, 2022-06-12. [2]. World Health Organization · 2021: WHO Drug Information.

Solubility Data

Solubility (In Vitro)

H2O: ≥ 100 mg/mL (15.31 mM)

Solubility (In Vivo)

Note: Listed below are some common formulations that may be used to formulate products with low water solubility (e.g. < 1 mg/mL), you may test these formulations using a minute amount of products to avoid loss of samples. Injection Formulations (e.g. IP/IV/IM/SC) Injection Formulation 1: DMSO : Tween 80： Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution → 50 μL Tween 80 → 850 μL Saline) *Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH ₂ O to obtain a clear solution. Injection Formulation 2: DMSO : PEG300 ：Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL DMSO → 400 μLPEG300 → 50 μL Tween 80 → 450 μL Saline) Injection Formulation 3: DMSO : Corn oil = 10 : 90 (i.e. 100 μL DMSO → 900 μL Corn oil) Example: Take the Injection Formulation 3 (DMSO : Corn oil = 10 : 90) as an example, if 1 mL of 2.5 mg/mL working solution is to be prepared, you can take 100 μL 25 mg/mL DMSO stock solution and add to 900 μL corn oil, mix well to obtain a clear or suspension solution (2.5 mg/mL, ready for use in animals). Injection Formulation 4: DMSO : 20% SBE-β-CD in saline = 10 : 90 [i.e. 100 μL DMSO → 900 μL (20% SBE-β-CD in saline)] *Preparation of 20% SBE-β-CD in Saline (4°C，1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution. Injection Formulation 5: 2-Hydroxypropyl-β-cyclodextrin : Saline = 50 : 50 (i.e. 500 μL 2-Hydroxypropyl-β-cyclodextrin → 500 μL Saline) Injection Formulation 6: DMSO : PEG300 : castor oil : Saline = 5 : 10 : 20 : 65 (i.e. 50 μL DMSO → 100 μLPEG300 → 200 μL castor oil → 650 μL Saline) Injection Formulation 7: Ethanol : Cremophor : Saline = 10： 10 : 80 (i.e. 100 μL Ethanol → 100 μL Cremophor → 800 μL Saline) Injection Formulation 8: Dissolve in Cremophor/Ethanol (50 : 50), then diluted by Saline Injection Formulation 9: EtOH : Corn oil = 10 : 90 (i.e. 100 μL EtOH → 900 μL Corn oil) Injection Formulation 10: EtOH : PEG300：Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL EtOH → 400 μLPEG300 → 50 μL Tween 80 → 450 μL Saline) Oral Formulations Oral Formulation 1: Suspend in 0.5% CMC Na (carboxymethylcellulose sodium) Oral Formulation 2: Suspend in 0.5% Carboxymethyl cellulose Example: Take the Oral Formulation 1 (Suspend in 0.5% CMC Na) as an example, if 100 mL of 2.5 mg/mL working solution is to be prepared, you can first prepare 0.5% CMC Na solution by measuring 0.5 g CMC Na and dissolve it in 100 mL ddH2O to obtain a clear solution; then add 250 mg of the product to 100 mL 0.5% CMC Na solution, to make the suspension solution (2.5 mg/mL, ready for use in animals). Oral Formulation 3: Dissolved in PEG400 Oral Formulation 4: Suspend in 0.2% Carboxymethyl cellulose Oral Formulation 5: Dissolve in 0.25% Tween 80 and 0.5% Carboxymethyl cellulose Oral Formulation 6: Mixing with food powders Note: Please be aware that the above formulations are for reference only. InvivoChem strongly recommends customers to read literature methods/protocols carefully before determining which formulation you should use for in vivo studies, as different compounds have different solubility properties and have to be formulated differently.  (Please use freshly prepared in vivo formulations for optimal results.)