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Application Protocols
Item-specific protocols and tested applications: Not specified for this item; refer to CoA/Spec Sheet and SDS. No validated dilutions, transfection reagents, or positive-control systems are provided in the Product Data.
Note
Because this section requires product-validated conditions, and none are supplied, please consult the lot-specific documentation for any tested workflows.
General biology of Scn3a (literature; not item-specific)
Protein/function: Nav1.3 is a pore-forming alpha subunit of a voltage-gated Na+ channel responsible for rapid depolarizing inward sodium current during action potential initiation and propagation.
Expression: Prominent in developing central nervous system; expression patterns can shift postnatally. Detected in neurons and certain peripheral tissues in mouse.
Structure: Four homologous domains (DI–DIV), each with six transmembrane segments (S1–S6); the S4 segments act as voltage sensors; the pore loop between S5–S6 forms the selectivity filter.
Physiological role: Contributes to neuronal excitability, firing thresholds, and repetitive firing. Interacts with auxiliary beta subunits and is modulated by phosphorylation and membrane voltage history.
mRNA/protein turnover: Subject to regulation by transcriptional factors and miRNAs; protein undergoes trafficking and endocytosis pathways.
Use of siRNA against Scn3a (literature)
Research utility: Transiently reducing Scn3a expression enables dissection of its specific contribution to sodium currents and neuronal behavior in vitro. Phenotypes can be assessed by qRT-PCR, immunoblotting, and patch-clamp electrophysiology.
Notes
The above describes general biological roles; this product’s sequences or potency against specific Scn3a isoforms are not specified.
Buffer Applications
Applicability
This product is not a buffering agent. Buffer considerations relate to siRNA reconstitution and handling.
General/literature guidance (not item-specific)
Reconstitution: RNase-free water or TE buffer (10 mM Tris-HCl, 1 mM EDTA, pH 7.5–8.0) are commonly used for initial dissolution and storage to mitigate nuclease activity.
Working solutions: Dilute siRNA into serum-free, antibiotic-free medium for complex formation with transfection reagents; then add to complete medium after complexation per reagent guidance.
Ionic strength/pH: Maintain near-neutral pH (7.0–8.0). Excess divalent cations can promote nuclease activity; EDTA in TE chelates Mg2+/Ca2+.
Filtration/sterility: Use sterile, nuclease-free consumables; avoid filter membranes that bind nucleic acids (e.g., certain nylon filters) unless validated.
Not specified for this item
Any proprietary siRNA buffer formulation, lyophilized matrix, or recommended reconstitution buffer is not provided; refer to the CoA/Spec Sheet.
Green Alternatives
Context
Green chemistry considerations for siRNA workflows focus on reducing hazardous reagents, minimizing waste, and selecting less toxic delivery systems. No item-specific formulation details are provided for SKU S1486944.
Strategies (general/literature; not item-specific)
Solvent choices: Use aqueous RNase-free buffers (water or TE) exclusively; avoid chlorinated or high-VOC solvents. This already aligns with green solvent selection.
Transfection reagents: Prefer biodegradable, low-cytotoxicity lipids or polymers; newer lipid nanoparticles and peptide-based carriers can maintain efficacy at reduced doses, lowering waste and cell stress.
Process scale-down: Miniaturize screening in 96–384-well plates to reduce reagent consumption and plastic usage.
Waste management: Collect nucleic acid-containing waste separately; avoid bleach with azide-containing buffers; use RNase-deactivating sprays with low VOC content.
Energy use: Consolidate freeze–thaw events and store aliquots to minimize ultracold door openings; ship on consolidated schedules to reduce cold-chain footprint when possible.
Comparison (literature)
Conventional lipofection vs. greener carriers: Traditional cationic lipids are effective but can be cytotoxic; biodegradable/neutral lipid systems can reduce toxicity and improve biocompatibility at equivalent knockdown levels.
Note
Without product-specific composition, any substitution of carriers or buffers should be validated empirically for Scn3a silencing performance.
Pharmaceutical Uses
Item-specific status (from Product Data)
Research Use Note: For research use only. Not for human or veterinary use, not for clinical or diagnostic procedures.
General context (literature; not item-specific)
siRNA technologies are used in discovery research, target validation, and process development. In pharmaceutical settings, preclinical teams may employ siRNA to model target modulation in vitro.
Formulation/excipient perspective: Catalog siRNAs are not supplied as drug products or excipients. Any drug product development would require GMP synthesis, rigorous impurity profiling, and validated analytical methods beyond research-grade materials.
Notes
No pharmacopeial monographs or clinical formulation roles apply to this research reagent as listed. Any manufacturing or therapeutic applications are outside the scope of this product and would require separate sourcing and compliance.
Physical Properties
Item-specific facts (from Product Data)
Appearance: Not specified for this item; refer to CoA/Spec Sheet.
Molecular weight: Not specified for this item; refer to CoA/Spec Sheet.
General/literature properties for siRNA (not item-specific)
Physical state: Commonly supplied lyophilized or in aqueous RNase-free buffer; forms clear solutions upon reconstitution.
Solubility: Freely soluble in nuclease-free water or TE buffer (literature). Typical working solutions: 10–100 µM stocks.
pKa / logP: Not applicable in the conventional small-molecule sense; highly polar polyanionic biopolymer due to phosphate backbone (literature).
Stability: Sensitive to nucleases; enhanced stability when stored frozen and handled under RNase-free conditions (literature). Duplex melting temperature (Tm) depends on length/GC content and salt; not specified for this item.
UV characteristics: Strong absorption at 260 nm; typical A260 of 1.0 corresponds to ~40 µg/mL for single-stranded RNA; for duplex siRNA, conversion factors vary by sequence (literature). Item-specific extinction coefficient: Not specified for this item.
Density, MP/BP, refractive index: Not applicable/Not determined for oligonucleotide duplexes in standard catalogs.
Notes
Exact mass, composition, extinction coefficient, and Tm are sequence- and modification-dependent and must be taken from the item’s CoA/Spec Sheet if needed for quantitative work.
Quality and Grades
Item-specific quality information (from Product Data)
Grade/Purity: Not specified for this item; refer to CoA/Spec Sheet.
General guidance (literature; not item-specific)
Typical siRNA grades: Desalted, cartridge-purified, or HPLC-purified. For functional RNAi in mammalian cells, HPLC purification is commonly preferred to minimize shortmers and synthesis byproducts that can affect potency and off-targeting.
Modifications/stabilizers: 2′-O-methyl, 2′-F, and/or phosphorothioate linkages can improve nuclease resistance and in vivo stability; presence is sequence- and vendor-specific. This item does not specify any modifications.
Identity/quality verification: Vendors often provide MALDI-TOF/ESI-MS confirmation, analytical HPLC traces, and OD260 quantitation. Lot-specific data should be consulted on the CoA.
Functional performance: Knockdown efficiency depends on sequence, cell type, transfection method, dose, and mRNA abundance. Pre-designed sets typically include multiple siRNA duplexes targeting non-overlapping regions to increase the chance of potent silencing and enable pooled or deconvoluted use.
Recommendations
For sensitive applications (RNA-seq, low-dose knockdown), verify that the supplied grade meets your internal QC criteria (purity threshold, endotoxin for primary cells if needed). Request the CoA/Spec Sheet for exact purity, amount (nmol), and QC metrics for SKU S1486944.
Reaction and Applications
Item-specific applications (from Product Data)
Manufacturer Applications: Not specified.
General/literature applications of pre-designed siRNA sets (not item-specific)
RNA interference: Sequence-specific knockdown of target mRNA (here: mouse Scn3a) to assess gene function in cell culture or ex vivo systems.
Pooled vs. individual use: Sets often comprise 3–4 duplexes; pools can enhance potency while diluting off-target effects. Deconvolution identifies the most effective single duplex.
Experimental contexts: Neuronal cell lines or primary neurons expressing Scn3a; heterologous systems overexpressing Scn3a constructs; co-transfection with reporter plasmids for functional readouts.
Readouts: qRT-PCR for mRNA reduction; Western blot for protein decrease (requires validated antibody); electrophysiology (voltage-clamp) to assess sodium currents as functional endpoints.
Controls: Non-targeting siRNA, positive control siRNA (e.g., targeting a housekeeping gene), and transfection reagent-only control are essential to interpret knockdown specificity and cytotoxicity.
Off-target mitigation: Use low effective concentrations, chemical stabilizations where appropriate, and multiple independent siRNAs that converge on the same phenotype.
Notes
This item’s exact number of duplexes, sequences, chemical modifications, and recommended application contexts are not provided; consult the CoA/Spec Sheet for product-specific instructions.
Reaction Conditions
Applicability
There are no chemical “reactions” in the synthetic sense. Here, “conditions” refers to typical transfection and gene-silencing parameters. The following are general literature guidelines and not item-specific recommendations.
General/literature guidance (not item-specific)
Cell systems: Adherent or suspension mammalian cells amenable to transfection; primary neurons require optimized, gentle delivery methods.
Dose: Common starting range 5–50 nM siRNA duplex in culture; titrate to the minimum effective concentration to reduce off-targets.
Timing: Assess mRNA knockdown at 24–48 h post-transfection; protein level and functional readouts often at 48–96 h, depending on protein half-life (ion channels may require longer for turnover).
Medium: Complex siRNA with lipid/polymer in serum-free medium (e.g., Opti-MEM), then add to cells; introduce serum after complex formation as per reagent instructions.
Controls: Non-targeting siRNA, siRNA against an unrelated gene, and mock transfection.
Replicates: Include biological triplicates for statistical robustness.
Not specified for this item
Exact working concentration, number of duplexes per set, sequences, and any validated transfection reagent are not provided; consult the CoA/Spec Sheet for product-specific directions if available.
Safety and Handling
Item-specific hazards (from Product Data)
GHS classification, pictograms, signal word, H-statements: Not specified for this item; refer to the SDS.
General safety guidance for siRNA reagents (literature/best practice; not item-specific)
Expected hazards: Oligonucleotide siRNAs are generally considered low hazard, non-volatile, and non-flammable. Nonetheless, handle as a laboratory chemical.
PPE: Laboratory coat, disposable nitrile gloves, and safety glasses. Change gloves frequently to prevent nuclease transfer.
Engineering controls: Work in a clean area; use RNase-free pipette tips and tubes. Consider a biological safety cabinet if handling cell cultures or transfection mixes.
Incompatibilities: Avoid strong acids/bases and nucleases; avoid repeated freeze–thaw cycling which can degrade RNA duplexes.
First aid (general): If inhaled or contacted with skin/eyes, rinse with water. If ingested, rinse mouth. Seek medical attention as appropriate. Refer to SDS for authoritative instructions.
Waste: Dispose of aqueous solutions and consumables per institutional biotech waste procedures; decontaminate surfaces with RNase-deactivating agents (e.g., RNase AWAY) or 0.1% DEPC-treated solutions where appropriate.
Always defer to the product-specific SDS and institutional EHS policies for definitive hazard, spill, and first-aid guidance.
Solvent Selection
Applicability
This product is an siRNA duplex set; solvent selection pertains to reconstitution and dilution, not organic reaction media.
General/literature guidance for siRNA dissolution (not item-specific)
Primary solvents: RNase-free water, 1× TE (10 mM Tris-HCl, 1 mM EDTA, pH 7.5–8.0), or manufacturer-supplied siRNA buffer are standard. TE provides pH buffering and chelates divalent cations that can support nuclease activity.
Avoid: Non-aqueous organic solvents (e.g., methanol, DMSO) for stock solutions; they can destabilize duplexes and impair downstream transfection. Small residual amounts of ethanol from DNA precipitation should be fully removed.
Ionic strength: Moderate salt (e.g., 50–100 mM KCl/NaCl) can support duplex stability; formulation should match downstream application requirements.
Working stocks: Prepare concentrated stocks (e.g., 20–100 µM) in RNase-free water/TE, then dilute into serum-free transfection medium immediately before use.
Comparison (literature)
RNase-free water: Maximum flexibility; no chelation or buffering capacity.
TE buffer: Enhanced stability during long-term storage; EDTA is beneficial but may be undesirable for downstream Mg2+-dependent enzymes.
Commercial siRNA buffers: Proprietary blends optimized for stability; consult product documentation if provided (not specified for this item).
Notes
Filter sterilization is typically unnecessary if using sterile, nuclease-free reagents and aseptic technique.
Not specified for this item; refer to CoA/Spec Sheet
Exact physical form (lyophilized vs. solution), amount (nmol/OD260), concentration (if in solution), recommended reconstitution buffer, and aliquoting instructions.
General handling notes (awareness; not item-specific)
RNase-free technique: Use nuclease-free water/buffers and sterile, RNase-free plasticware. Wear clean gloves and change frequently.
Aliquoting: If supplied lyophilized, briefly centrifuge before opening, reconstitute with RNase-free water or TE to a convenient stock concentration (e.g., 20–100 µM), and aliquot to avoid repeated freeze–thaw cycles.
Storage: For long-term storage, -80°C is often preferred for aqueous stocks; -20°C is commonly adequate for lyophilized material. Protect from repeated freeze–thaw and light.
Research Use
For research use only.
Structure and Identity
Item-specific facts (from Product Data)
Product: Scn3a Mouse Pre-designed siRNA Set A (SKU: S1486944)
siRNA structure: Typically a 19–21 bp double-stranded RNA with 2-nt 3′ overhangs on each strand; sense and antisense strands are annealed to form a duplex that is incorporated into RISC for sequence-specific mRNA silencing.
Chemical features: Repeating ribose-phosphate backbone with ribonucleobases (A, U, G, C). Many pre-designed siRNAs may include optional chemical stabilizations (e.g., 2′-O-methyl, phosphorothioate linkages) to enhance stability; presence/positions are product-specific and not provided here.
Sequence: Not specified for this item; refer to CoA/Spec Sheet.
2D/functional features (literature)
Key motifs: 5′-phosphate (guide strand) preferred for RISC loading; antisense strand complementarity to Scn3a mRNA.
Strand orientation: Antisense (guide) strand pairs to target mRNA; sense (passenger) strand is typically discarded by RISC.
Notes
Without item-specific sequence or modification data, structural identifiers (SMILES/InChI) are not meaningful for this product class.
Synthetic Utility
Applicability
Not a synthetic building block for small-molecule chemistry. As a functional nucleic acid, this product is used biologically rather than in chemical synthesis.
Molecular biology utility: Serves as a tool compound for transient gene silencing via RNAi, complementing genetic knockouts/CRISPR and antisense oligos in mechanistic studies.
Assay development: Enables pathway dissection, target validation, and phenotypic screening where reversible suppression of Scn3a is desired.
Notes
For chemical synthesis or cross-coupling content, refer instead to small-molecule building blocks. This siRNA set is not typically employed in organic reaction schemes.
Target Specificity
Item-specific facts (from Product Data)
Target gene: Scn3a (mouse).
Product type: Pre-designed siRNA Set A (comprising multiple siRNA duplexes; exact count and sequences not specified for this item).
Not specified for this item; refer to CoA/Spec Sheet
Individual siRNA sequences and target exons/regions.
Any off-target analysis, BLAST specificity data, or predicted seed-region matches.
Validated cell lines/tissues for demonstrated knockdown.
General notes (literature; not item-specific)
Specificity determinants: Perfect antisense complementarity within the coding sequence or 3′UTR of Scn3a; minimized seed-based off-targeting via sequence design and low dosing.
Verification: Validate by qRT-PCR using exon-spanning primers and by Western blot with a sequence-verified anti-Scn3a antibody; functional validation via sodium current measurements where feasible.
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Products are supplied to verified businesses, institutions, and qualified professionals for research and development use only. Not for use in humans, animals, diagnosis, or therapy.
