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        Poly(dA:dT) / LyoVec™

        更新時間:2022-01-28

        簡要描述:

        Poly(dA:dT) is a poly(deoxyadenylic-deoxythymidylic) acid sodium salt. It is a repetitive synthetic double-stranded DNA sequence of poly(dA-dT):poly(dT-dA) and a synthetic analog of B-DNA.

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        Synthetic analog of B-DNA

        Poly(dA:dT) is a poly(deoxyadenylic-deoxythymidylic) acid sodium salt. It is a repetitive synthetic double-stranded DNA sequence of poly(dA-dT):poly(dT-dA) and a synthetic analog of B-DNA.

        Poly(dA:dT)  is recognized by multiple PRRs:
        - Sensing by cytosolic DNA sensors (CDS), including cGAS, AIM2, DAI, DDX41, IFI16, and LRRFIP1, triggers the production of type I interferons [1-3].
        - Sensing by the cytosolic DNA sensor AIM2 triggers the formation of an inflammasome and the subsequent secretion of IL-1β and IL-18 [4].
        - Indirect sensing by the cytosolic RNA sensor RIG-I can occur upon the transcription of Poly(dA:dT) into dsRNA with a 5'triphosphate moiety (5'ppp-dsRNA) by the RNA polymerase III [5,6]. This indirect sensing by RIG-I leads to the production of type I interferons [7].

        To achieve stimulation of cytosolic PRRs, Poly(dA:dT) must be delivered into the cytoplasm, for example by using a transfection agent, such as LyoVec™.

         

        Key features of Poly(dA:dT):

        • Poly(dA:dT) is a multi-PRR agonist.

        • Its biological activity has been verified using our RLR reporter cell lines and Inflammasome Test Cells.

        • For your convenience, pre-complexed Poly(dA:dT)/ LyoVec™ is also available.

         

        References:

        1. Unterholzner L., 2013. The interferon response to intracellular DNA: why so many receptors? Immunobiology. 218(11):1312-21.
        2. Zhang Z. et al., 2011. The helicase DDX41 senses intracellular DNA mediated by the adaptor STING in dendritic cells. Nat Immunol. 12(10):959-65.
        3. Wu J. et al., 2013. Cyclic GMP-AMP is an endogenous second messenger in innate immune signaling by cytosolic DNA. Science. 339(6121):826-30.
        4. Jones JW. et al., 2010. Absent in melanoma 2 is required for innate immune recognition of Francisella tularensis. PNAS, 107(21):9771-6.
        5. Ablasser A. et al., 2009. RIG-I-dependent sensing of poly(dA:dT) through the induction of an RNA polymerase III-transcribed RNA intermediate. Nat Immunol. 10(10):1065-72.
        6. Chiu YH. et al., 2009. RNA polymerase III detects cytosolic DNA and induces type I interferons through the RIG-I pathway. Cell. 138(3):576-91.
        7. Takeshita F. & Ishii KJ., 2008. Intracellular DNA sensors in immunity. Curr Opin Immunol. 20(4):383-8.


        Specifications

        Specificity: RIG-I & CDS agonist, AIM2 inflammasome inducer

        Formulation: Naked or pre-complexed with LyoVec™

        CAS number: 86828-69-5 (for Naked Poly(dA:dT))

        Working Concentrations:

        • 10 ng- 1 μg/ml for Naked Poly(dA:dT) for CDS or RLR stimulation.

        • 1 µg- 5 μg/ml for Naked Poly(dA:dT) for inflammasome induction.

        • 10 ng- 10 μg/ml for pre-complexed Poly(dA:dT)/LyoVec™ for CDS or RLR stimulation.

        • 1 µg- 5 μg/ml for pre-complexed Poly(dA:dT)/LyoVec™ for inflammasome induction.

        Solubility:

        • 2 mg/ml in water for Naked Poly(dA:dT)

        • 50 µg/ml in water for pre-complexed Poly(dA:dT)/LyoVec™

        Quality Control:

        • The biological activity has been verified using cellular assays.

        • The absence of bacterial contamination (lipoproteins and endotoxins) has been confirmed using HEK-Blue™ TLR2 and HEK-Blue™ TLR4 cells.


        Contents

        Poly(dA:dT) Naked is available in two quantities:

        tlrl-patn:

        • 200 µg lyophilised poly(dA:dT) naked

        • 1.5 ml sterile endotoxin-free water 

        tlrl-patn-1:

        • 1 mg lyophilised poly(dA:dT) naked

        • 1.5 ml sterile endotoxin-free water

         

        Poly(dA:dT)/LyoVec™ is available in one quantity:

        tlrl-patc:

        • 4 x (25 µg Poly(dA:dT) complexed with 50 µg of LyoVec™), lyophilized

        • 10 ml sterile endotoxin-free water

         

         Poly(dA:dT) and  Poly(dA:dT)/LyoVec™ are provided lyophilized and shipped at room temperature.

         Store lyophilized Poly(dA:dT) and  Poly(dA:dT)/LyoVec™ at -20°C.

         Lyophilized product is stable for 1 year when stored -20°C.

        如需購買或咨詢該產品技術問題,請聯系Invivogen一級代理商-欣博盛生物

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