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Association of RANTES with the replication of severe acute respiratory syndrome coronavirus in THP-1 cells



Association of RANTES with the replication of severe acute respiratory syndrome coronavirus in THP-1 cells



European Journal of Medical Research 10(3): 117-120



Severe acute respiratory syndrome (SARS) is a novel infectious disease which is characterized by an overaggressive immune response. Chemokines are important inflammatory mediators and regulate disease due to viral infection. In previous study, we found that SARS-CoV has the ability to replicate in mononuclear cells. In present work, we sought to characterize the replication of SARS-CoV at the presence of RANTES in THP-1 cells. To determine whether RANTES play an role in the process of SARS, THP-1 cells were incubated with heat-inactivated SARS-CoV and ELISA was used to test RANTES levels in the supernatants; Then the effect of dexamethasone on the induced secretion was evaluated. Real-time PCR was used to investigate the effort of RANTES on the replication of SARS-CoV in vitro. Macrophages, induced by THP-1 cells, were used as cell model. Inactive SARS-CoV could induce THP-1 cells secret RANTES and this increase effect could not be suppressed by DXM. RANTES itself could inhibit the replication of SARS-CoV in THP-1 cells when it was added into the culture before or at the same time with the virus; No inhibition effect was shown when RANTES were added into the culture after SARS-CoV infected the cells.

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Accession: 048324675

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PMID: 15851378


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