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Home / VECTOR &VIRUS / Lentivirus

HLA-E Lentivirus

SKU : BHV18200012

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BPS Bioscience

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Mfr.No.	78929
Description	HLA-E Lentivirus are replication incompetent, HIV-based, VSV-G pseudotyped lentiviral particles ready to transduce nearly all types of mammalian cells, including primary and non-dividing cells. These viruses result in expression of human HLA-E (NM_005516.6) driven by an EF1a promoter, and a puromycin selection marker. HLA-E, or MHC (major histocompatibility complex) class I antigen E, is considered a non-classical MHC class I with low expression and fewer polymorphisms than the remaining HLA. HLA-E is composed of a heavy chain and β-2 microglobulin (B2M). It binds to specific peptides derived from the classical MHC class I (HLA-A, B, C and G), after these have been processed in the endoplasmic reticulum and the proteosome. The complex of HLA-E with the peptide is recognized by NK cells via the inhibitory receptor CD94/NKG2A/B. Binding to CD94/NKG2C however results in NK cell activation. Expression of HLA-E combined with knockout of HLA-A, B and C, in pluripotent stem cell (PSC) and their differentiated cell types, resulted in these cells escaping attack by CD8+ T cells and NK cytotoxicity. This strategy brings us closer to an almost universal cell donor reality, reducing the risk of immune rejection during cell transplants and alleviating the enormous investment of creating a PSC bank that has representation of all the haplotypes. The lentivirus particles were produced in HEK293T cells in medium containing 90% DMEM + 10% FBS. Virus particles can be packaged in custom formulations and produced at higher titers by special request, for an additional fee. Biosafety The lentiviruses are produced with a SIN (self-inactivation) lentivector which ensures self-inactivation of the lentiviral construct after transduction and after integration into the genomic DNA of the target cells. None of the HIV genes (gag, pol, rev) will be expressed in the transduced cells, as they are expressed from packaging plasmids lacking the packing signal and are not present in the lentivirus particle. Although the pseudotyped lentiviruses are replication-incompetent, they require the use of a Biosafety Level 2 facility. BPS Bioscience recommends following all local federal, state, and institutional regulations and using all appropriate safety precautions.
Applications Range	Expression of human HLA-E in cells of interest. Generate cell pools or stable cell lines expressing HLA-E following puromycin selection.
Storage	Lentiviruses are shipped with dry ice. For long-term storage, it is recommended to store the lentiviruses at -80°C. Avoid repeated freeze-thaw cycles. Titers can drop significantly with each freeze-thaw cycle.
Shipping	-80°C

Reference Paper	Gornalusse G., et al., 2017 Nature Biotechnology 35:765-772

Expression of HLA-E in K562 cells transduced with HLA-E Lentivirus

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SKU	Supplier No.	Size	Your price	Quantity
BHV18200012	78929	500 µl x 2	$1250		Add to Cart

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