Porcine antiviral activity is increased by CRISPRa-SAM system.

Abstract:

:Clustered Regularly Interspaced Short Palindromic Repeat activation-synergistic activation mediator system (CRISPRa-SAM) has been efficiently used to up-regulate the targeted genes in human and mouse. But it is not known whether the CRISPRa-SAM system can be used against porcine disease because its two important transcriptional activation domains (P65 and heat shock transcription factor 1 (HSF1)) are from mouse and human, respectively. Pig is one of the most important meat sources, porcine viral infectious diseases cause massive economic losses to the swine industry and threaten the public health. We aimed to investigate whether the CRISPRa-SAM system could increase porcine antiviral activity by mediating two pig-specific target genes (Mx2 and β1,4 N-acetylgalactosaminyltransferase (B4galnt2)). First, we constructed PK-15 and IPEC-J2 cell lines expressing nuclease-deficient Cas9 (dCas9)-vp64 and MS2-P65-HSF1 stably. Next, in these two cell models, we activated Mx2 and B4galnt2 expression through CRISPRa-SAM system. Antiviral activity to PRV or H9N2 was improved in PK-15 cells where Mx2 or B4galnt2 was activated. Altogether, our results demonstrated the potential of CRISPRa-SAM system as a powerful tool for activating pig genes and improving porcine antiviral activity.

journal_name

Biosci Rep

journal_title

Bioscience reports

authors

Jiang J,Sun Y,Xiao R,Wai K,Ahmad MJ,Khan FA,Zhou H,Li Z,Zhang Y,Zhou A,Zhang S

doi

10.1042/BSR20191496

subject

Has Abstract

pub_date

2019-08-19 00:00:00

issue

8

eissn

0144-8463

issn

1573-4935

pii

BSR20191496

journal_volume

39

pub_type

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