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BPS Bioscience的CRISPR服務(wù)(英文)

服務(wù)名稱:CRISPR服務(wù)CRISPR-Cas9isatechniqueusedforgenomeeditingthatisadaptedfromthebacteria’santiviralimmuneresponse

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  • 更新時間:2023-12-19
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    CRISPR服務(wù)

CRISPR-Cas9 is a technique used for genome editing that is adapted from the bacteria’s antiviral immune response. Bacteria capture and store DNA fragments from invading viruses within a region of their genome, and these CRISPR (Clustered Regularly Interspaced Short Palindromic Repeats) guide sequences help detect and protect the bacteria from future infections. When the CRISPR guide sequences detect an invading virus or DNA whose sequence is complementary to the CRISPR guide, the Cas9 (CRISPR-associated protein 9) nuclease is recruited to specifically cleave the invading DNA, resulting in its degradation.

This CRISPR-Cas9 system has been modified for use in mammalian cells. By introducing a guide sequence (sgRNA) specific for our gene of interest, we can either knock-out specific genes through introducing frame shift mutations via Non-Homologous End Joining (NHEJ), or generate knock-in mutations through additionally providing a template for Homologous Recombination (HR).

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With BPS Bioscience’s custom cell line development services, we can generate custom knock-out and knock-in cell lines using CRISPR/Cas9 licensed technology. The development process is comprised of five milestones where data is provided after each milestone completion. Each project is customized for the desired deliverables through working directly with our team of highly trained scientists. Contact us to learn more about these services.

BPS offers over 70 cell types across cancerous and noncancerous cell lines. To create a cell line in a different cell type, contact us.

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Knock-Out Cell Lines

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With BPS Bioscience’s custom cell line development services, our team of highly experienced scientists can generate custom knock-out cell lines in more than 70 different cell types using CRISPR-Cas9 licensed technology, targeting whichever gene(s) of interest you’re interested in. The development process is comprised of separate milestones where data is provided after each milestone completion. Each project is customized for the desired deliverables through working directly with you. Contact us to learn more about what we can offer.

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1. Molecular Biology

BPS will design and synthesize three short guide RNA (sgRNA) sequences corresponding to your gene of interest to be knocked-out, based on criteria to maximize cutting efficiency while minimizing potential off-targeting. If you are looking to knock-in a point-mutation or add a tag to an endogenously expressed gene, BPS will also design and synthesize the homology driven repair (HDR) template.

圖片2. CRISPR Transfection

Depending on the cell-type, cells can be transfected via electroporation, liposome-based transfection, or viral infection. The parental cell line can be provided or it will be supplied by BPS.

圖片3. Limiting Dilution

Based upon the results of the initial pool testing, the cell pool will be clonally diluted and the single cell-derived clones will be expanded.

4. Screen For Either Loss of Expression or the Knock-In Mutation圖片

The expression level of the gene of interest will be analyzed via Western Blot or FACS.

圖片 5. Confirmation

Genes showing loss of expression of the gene of interest will be further analyzed through genomic sequencing. Furthermore, for Knock-in mutations, functional validation is available depending on the gene of interest. Mycoplasma testing and cell banking services are also available.

CRISPR Knock-In

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With BPS Bioscience’s custom cell line development services, our team of highly experienced scientists can generate custom knock-in cell lines in more than 70 different cell types using CRISPR-Cas9 licensed technology, targeting whichever gene(s) of interest you’re interested in. The development process is comprised of separate milestones where data is provided after each milestone completion. Each project is customized for the desired deliverables through working directly with you. Contact us to learn more about what we can offer.

圖片1. Molecular Biology

BPS will design and construct the gRNA and HDR template according to your experimental needs.


圖片2. Stable Cell Line Generation

The cells will be transduced with the Cas9, gRNA, and HDR template, followed by genome editing evaluation. Single clones will be selected and expanded.

圖片3. Genotyping & Confirmation

The knock-in mutations will be confirmed by genomic sequencing, and positive clones will be expanded for further confirmation.

CRISPR Activation
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Induce transcriptional activation and expression of any gene of interest Induction can be more than a hundred-fold, depending on the gene

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The CRISPR Synergistic Activation Mediator (SAM) system is used to induce transcriptional activation and expression of any gene of interest. The SAM system consists of 3 components: (1) a mutated dCas9 (Streptococcus pyogenes CRISPR associated protein 9), lacking any endonuclease activity, fused to VP64, a transcriptional activator; (2) P65 (Transcription Factor p65, or Nuclear Factor NF-κ-B p65) and HSF1 (Heat Shock Factor 1) fused with an MS2 tag; and (3) the MS2-tagged sgRNA targeting the promoter region of the gene of interest.

Once the sgRNA-MS2 targets the promoter region of the gene of interest, dCas9-VP64 and MS2-P65-HSF1 are recruited to the site in the genomic DNA and begin transcription, inducing expression of the desired gene. Induction can be more than a hundred-fold, depending on the gene.

With BPS Bioscience’s custom cell line development services, our team of highly experienced scientists can generate custom CRISPR activation cell lines in more than 70 different cell types using CRISPR-Cas9 licensed technology, targeting whichever gene(s) of interest you’re interested in. The development process is comprised of separate milestones where data is provided after each milestone completion. Each project is customized for the desired deliverables through working directly with you. Contact us to learn more about what we can offer.

Lentivirus Generated CRISPR Cell Lines

The CRISPR Lentiviruses are replication incompetent, HIV-based VSV-G pseudotyped lentiviral particles that are ready to be transduced into almost all types of mammalian cells, including primary and non-dividing cells. These particles contain a CRISPR/Cas9 gene driven by an EF1a promoter, along with 4 validated sgRNA (single guide RNA) targeting your gene of interest, driven by a U6 promoter.

Conduct your research directly with a BPS lentivirus product, or choose to utilize our custom services to develop a cell line designed to meet your research needs. Our CRISPR experts will provide project guidance in addition to your custom lentivirus-generated knock-out cell line.

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