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P9582

Sigma-Aldrich

Polyinosinic–polycytidylic acid potassium salt

with buffer salts, TLR ligand tested

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Synonym(s):
Poly (I:C), Poly(I) • Poly(C)
CAS Number:
MDL number:
NACRES:
NA.51

Quality Level

assay

≥99% (less than 1% free nucleotides, TLC)

form

lyophilized powder

composition

Poly(I) • Poly(C), 10% (balance buffer salts as sodium chloride and sodium phosphate)

storage condition

desiccated

storage temp.

−20°C

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This Item
I3036P4154P1530
Polyinosinic acid potassium salt Homopolymer

P4154

Polyinosinic acid potassium salt

form

lyophilized powder

form

-

form

lyophilized powder

form

lyophilized powder

Quality Level

300

Quality Level

-

Quality Level

200

Quality Level

300

storage temp.

−20°C

storage temp.

−20°C

storage temp.

−20°C

storage temp.

−20°C

storage condition

desiccated

storage condition

-

storage condition

-

storage condition

desiccated

composition

Poly(I) • Poly(C), 10% (balance buffer salts as sodium chloride and sodium phosphate)

composition

, 8-12% UV

composition

-

composition

-

Application

TLR3 recognizes double-stranded RNA and is a major effector of the immune response against viral pathogens. Polyinosinic–polycytidylic acid (Poly(I) • Poly(C)) is a double-stranded homopolymer used as a model RNA to study cell signaling at the level of TLR3. Poly(IC) is a TRIF-dependent toll-like receptor-3 (TLR3) ligand.

Biochem/physiol Actions

Transfection of Poly (I:C) into NIT-1 cells has been used as a model of intracellular dsRNA-induced β cell apoptosis. Eighteen hours post transfection, 45% of the cells were apoptotic with an increase in NF-kB, p50/p65 nuclear translocation, and cleavage of caspases 3 and 8, as well as transcriptional induction of caspase 12, Fas, IL-15, and the TNF receptor-associated ligand (TRAIL). It has been suggested that Poly(I:C) is one of the most appropriate generators of stable mature dendritic cells (DC). These mature DC might generate in vivo effective immune responses after injection due to their ability to secrete bioactive IL-12 after CD40 ligation. Poly (I:C) was used as a potent adjuvant to enhance the specific anti-tumor immune responses against a peptide-based vaccine.

Packaging

Package size based on polynucleotide content

Other Notes

Double-stranded homopolymer.

Preparation Note

The product requires ionic strength to maintain the double-strand structure. Reconstitution at ~10 mg/mL of water yields a polynucleotide in physiological phosphate buffered solution.

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)


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