pLenti-ARRB1-sgRNA

Cat. No.: P743908

Specifications

Product Name

pLenti-ARRB1-sgRNA

Product Line

Prodotti biologici

Stoccaggio e spedizione

Condizioni di conservazione di stoccaggio

Store at -80°C

Spedito in

Dry ice packs + Cold packs

Stabilità e conservazione

Stored at -20 ℃, valid for at least 6 months;Stored at -80 ℃, valid for at least one year.

Application Protocols

Item-specific, tested applications and conditions are not provided for this SKU.

Please consult the CoA/Spec Sheet for:

• Format (plasmid DNA vs. lentiviral particles), concentration/titer
• Recommended MOI or transfection amount
• Selection antibiotic and working concentrations
• Positive control guides or reference assays (if supplied)

General suggestion: Follow your institution’s standard CRISPR-lentiviral SOPs and adapt parameters after small-scale pilot optimization.

Biological Roles

General/literature context (not item-specific):

• ARRB1 (beta-arrestin 1): A multifunctional adaptor protein that regulates G protein–coupled receptor (GPCR) desensitization, internalization, and signaling bias. ARRB1 recruits clathrin/AP-2 for receptor endocytosis and scaffolds kinases (e.g., MAPKs) to direct downstream signaling independent of G proteins.
• Signaling specificity: ARRB1 influences pathway selection (“biased signaling”) and can modulate transcriptional outputs via interactions with nuclear partners.
• Experimental relevance: Genetic perturbation of ARRB1 (e.g., via CRISPR-sgRNA) is widely used to dissect GPCR trafficking, receptor resensitization cycles, and signal duration/amplitude.

Note: The species, isoform targeting, and exact sgRNA protospacer sequence for this item are not provided here and should be verified on the CoA/Spec Sheet before designing experiments.

Buffer Applications

Not applicable. This product is not a buffering reagent. For practical handling buffers (dilution, storage), consult the CoA/Spec Sheet for the exact formulation and recommended diluents for this SKU.

Green Alternatives

This product is a genetic construct and not a conventional chemical or solvent; “green solvent” substitution is not applicable.

General sustainability notes for nucleic-acid workflows (literature):

• Process minimization: Use miniaturized transfection and viral production protocols to reduce reagent consumption.
• Waste management: Segregate biohazardous waste; neutralize disinfectants (e.g., bleach) before drain disposal as permitted locally.
• Cold-chain optimization: Consolidate shipments and aliquot upon receipt to minimize future dry-ice shipments and waste.

Pharmaceutical Uses

Not applicable to clinical use. This product is labeled for research use only (per Product Data) and is not intended for human or veterinary diagnostic or therapeutic applications.

General formulation context (literature):

• Lentiviral vectors and plasmid constructs can be used in research-scale bioprocess development and analytical method qualification, but any GMP/manufacturing or clinical applications require purpose-built, regulated materials, which is outside the scope of this SKU.

Physical Properties

Item-specific specs: Not specified for this item; refer to CoA/Spec Sheet.

General/literature properties for nucleic-acid constructs (for planning only):

• Form: Commonly supplied as plasmid DNA in aqueous buffer or as lentiviral particles in cryoprotective buffer. This item’s form is not specified.
• Concentration: Typically reported in ng/µL for plasmid DNA or TU/mL (or GC/mL) for viral stocks (literature). Not specified for this item.
• A260/A280 ratio (DNA quality): ~1.8–2.0 (literature, indicative of purity). Not a specification for this item.
• Solubility: DNA/RNA are water-soluble; viral preparations are aqueous. Not a specification for this item.
• pH / buffer composition: Often Tris/EDTA or PBS-based buffers (literature). Not specified for this item.

Note: Do not treat literature values as specifications. Always consult the CoA/Spec Sheet for the exact formulation, concentration, and QC metrics of this SKU.

Quality and Grades

Item-specific grade/purity: Not specified for this item; refer to CoA/Spec Sheet.

How to interpret quality for lentiviral sgRNA constructs (general guidance):

• Sequence verification: For plasmid-based sgRNA vectors, Sanger/NGS confirmation of the sgRNA insert and backbone junctions is standard. Verify against the sequence provided in the CoA.
• Sterility and endotoxin: For DNA preps intended for cell culture or in vivo research, sterility and low endotoxin are often reported. For viral stocks, sterility and absence of mycoplasma are typical QC checks (literature). Not specified for this item.
• Functional titer (viral): If supplied as lentiviral particles, titer is commonly expressed as TU/mL (functional) or GC/mL (genome copies). Not specified for this item.
• Antibiotic selection marker and reporter: Commonly included (e.g., puro, blasticidin; GFP/mCherry) but are vector-dependent and not specified for this item.

Actionable advice:

• Request and review the CoA/Spec Sheet for: backbone name, insert sequence (sgRNA), resistance markers, titer (if viral), endotoxin level (if DNA), and recommended MOI/selection parameters.

Reaction and Applications

Item-specific applications (from catalog): Not specified beyond the name. See below for general use cases.

General/literature applications for pLenti sgRNA constructs targeting ARRB1:

• CRISPR-Cas9 gene knockout/knockdown: Lentiviral delivery of an ARRB1-specific sgRNA to achieve stable editing in dividing and non-dividing cells when combined with Cas9 expression (genome-integrating delivery). Suitable for creation of ARRB1-null cell lines for GPCR signaling studies, beta-arrestin scaffolding, and receptor trafficking assays.
• Pooled or arrayed screening: Incorporation into pooled CRISPR libraries or single-guide validation experiments focusing on GPCR pathway components.
• Complementation studies: After generating ARRB1-deficient cells, re-expression of wild-type or mutant ARRB1 to map functional domains (structure–function analysis).

Practical tips (general, not item-specific):

• If using as viral particles: determine MOI empirically; include appropriate polycation (e.g., polybrene) where permitted; select with the vector’s specified antibiotic.
• If using as plasmid: confirm sgRNA sequence and orientation; use high-quality, endotoxin-low DNA for transfection.
• Validate editing by T7E1/Surveyor, Sanger ICE/TIDE analysis, or amplicon NGS; confirm protein loss by immunoblotting/flow if antibodies are available.

Reaction Conditions

Item-specific reaction/usage conditions are not provided. The following are general literature workflows for pLenti sgRNA systems; adapt to your IBC-approved SOPs and confirm vector-specific parameters on the CoA/Spec Sheet.

• Lentiviral packaging (general): Transiently transfect HEK293T/293FT cells with transfer vector (pLenti-ARRB1-sgRNA), packaging (e.g., psPAX2), and envelope (e.g., VSV-G) plasmids. Collect supernatant at 48–72 h; clarify and, if needed, concentrate. Determine functional titer.
• Transduction: Choose MOI based on desired single-copy integration frequency (often MOI 0.1–1 for selection-based KO screens). Add polycation where permitted. Replace medium after 12–24 h.
• Selection: Apply the backbone’s antibiotic (e.g., puromycin) at empirically determined kill-curve concentrations; duration typically 2–7 days. The specific marker for this item is not specified.
• Editing window: Allow 48–96 h post-transduction/transfection before genotyping; clonal isolation may be required for complete knockout.
• Validation: Use PCR/NGS of the ARRB1 locus, followed by protein-level assays.

All parameters above are general guidance only and not specifications for this SKU.

Safety and Handling

Item-specific hazard data (from Product Data):

• GHS Classification / Signal word / H-Statements / Pictograms: Not specified for this item; refer to SDS.

General biosafety guidance (literature/best practice; verify with your IBC):

• Intended use: For research use only (as stated). Not for human or animal diagnostic or therapeutic use.
• Biosafety level: pLenti systems used for packaging replication-incompetent lentiviral particles are typically handled under BSL-2 containment with appropriate administrative approvals. Follow your institution’s IBC-approved SOPs.
• PPE: Lab coat, gloves, and eye protection. Use biological safety cabinet for procedures that may create aerosols (e.g., viral handling, cell culture).
• Incompatibilities: Avoid nucleases (DNase/RNase) contamination for plasmid/sgRNA integrity. Avoid repeated freeze–thaw of viral stocks.
• Decontamination: 10% bleach (fresh), followed by 70% ethanol for surfaces; autoclave solid waste per local regulations.
• First aid (general): In case of accidental exposure to viral particles (splash), flush affected area with water, seek medical evaluation per institutional policy, and report incident. For ingestion/inhalation, follow SDS and institutional exposure response.

Always defer to the product-specific SDS and your institutional biosafety guidelines for authoritative safety information.

Solvent Selection

Not typically applicable. This product is a nucleic-acid/viral construct rather than a small-molecule solute.

General handling notes (literature):

• Matrix: Usually provided in aqueous buffer (e.g., PBS, Tris-based, or proprietary). Avoid organic solvents.
• Dilution: Use sterile, nuclease-free water or the recommended sterile buffer to dilute, if applicable (verify on CoA/Spec Sheet).

Storage and Reconstitution

Item-specific (from Product Data):

• Storage conditions: Store at −80°C.
• Shipping: Dry ice packs + cold packs.

Not specified for this item; refer to CoA/Spec Sheet for:

• Exact buffer composition, stabilizers, and concentration/titer
• Recommended aliquot size and number of freeze–thaw cycles
• Thawing and mixing instructions (e.g., gentle inversion vs. vortexing)

General handling guidance (literature/best practice):

• Aliquot upon first thaw to minimize freeze–thaw. Keep on ice during handling.
• Avoid nuclease contamination: Use sterile, nuclease-free tubes and tips.
• Short-term storage: Keep at 4°C only for brief periods (hours to <1 day) if necessary; return to −80°C promptly.
• Do not refreeze multiple times; loss of viral titer or DNA integrity can occur. Use fresh aliquots for critical experiments.

Structure and Identity

Item-specific facts (from Product Data):

• Product name: pLenti-ARRB1-sgRNA
• SKU: P743908
• Type: Lentiviral sgRNA construct (name implies an sgRNA targeting ARRB1)
• CAS / CID / InChIKey / SMILES: Not applicable to nucleic acid constructs; not specified for this item.
• Molecular formula / Molecular weight: Not specified for this item; refer to CoA/Spec Sheet.

General/literature description (not item-specific):

• Construct class: pLenti sgRNA vectors are plasmid backbones designed for lentiviral delivery of a single-guide RNA (sgRNA) to cells for CRISPR applications. They typically contain a U6/H1 Pol III promoter driving the sgRNA, a tracrRNA scaffold, and a selection marker (e.g., puromycin or blasticidin), though exact features vary by backbone.
• Target gene: ARRB1 encodes beta-arrestin 1, a multifunctional adaptor in GPCR signaling. The exact sgRNA sequence and species coverage for this item are not provided here.

How to visualize (general):

• 2D map typically includes: 5′ LTR – ψ packaging signal – antibiotic resistance cassette – sgRNA expression cassette – 3′ LTR. The precise arrangement and elements are backbone-dependent and are not specified for this item.

Synthetic Utility

In the context of molecular biology (general, not item-specific):

• Functional “groups”: The sgRNA expression cassette functions as the active element guiding Cas9 to the ARRB1 locus via crRNA complementarity, with the tracrRNA scaffold recruiting Cas9.
• Retrosynthetic value (vector engineering): The pLenti backbone permits modular cloning of different protospacers via Type IIS restriction sites or Golden Gate assembly. Swapping promoters or selection markers enables tailoring for cell-type specificity or selection regimes.
• Combinatorial studies: Co-delivery with Cas9 or dCas9 fusions (KRAB, VPR) extends utility to knockout, CRISPRi, or CRISPRa targeting ARRB1-associated pathways.

Note: Exact restriction sites, promoter identity, and marker(s) for this item are not specified; consult the sequence map in the CoA/Spec Sheet.

Target Specificity

Item-specific details available:

• Intended gene target (inferred from product name): ARRB1 (beta-arrestin 1). Please verify the exact protospacer sequence, PAM context, and species specificity on the CoA/Spec Sheet.

Not specified for this item; refer to CoA/Spec Sheet for:

• Exact sgRNA sequence and strand orientation
• Species/isoform coverage and off-target assessment (if provided)
• Cas nuclease compatibility (SpCas9, SaCas9, etc.)
• Vector backbone, promoter(s), and selection marker(s)

General note (literature): Off-target potential depends on sgRNA sequence, genomic context, and nuclease variant; use in silico tools and empirical assays to validate specificity.