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Coxsackie virus entry and spread in HeLa cells is aided by microvesicle release

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contributor authorJorfi, Samireh
contributor authorInal, Jameel
date accessioned2018-07-31T14:30:39Z
date available2018-07-31T14:30:39Z
date issued2012-09-13
identifier citationJorfi , S & Inal , J 2012 , ' Coxsackie virus entry and spread in HeLa cells is aided by microvesicle release ' Microvesiculation and Disease, a Biochemical Society Focused Meeting , London , United Kingdom , 13/09/12 - 14/09/12 , .en
identifier citationconferenceen
identifier otherPURE: 13382485
identifier otherPURE UUID: 9f554900-e92d-4309-81c9-bb463e52e3ad
identifier urihttp://hdl.handle.net/2299/20317
description abstractMicrovesicles(MVs) released from plasma membrane expressing surface phosphatidylserine and ranging from 0.2-≤1 m in diameter are reported to carry various membrane proteins, lipids and cytoplasmic components characteristic of the parental cell (1). Coxsackievirus B (CVB), a member of the enterovirus family is the main cause of meningitis and encephalitis in infants which may result in neurodevelopmental defects. Calpains are calcium-dependant cysteine proteases that degrade cytoplasmic and cytoskeletal proteins. They regulate a variety of actin-dependant cellular processes such as microvesiculation. CVB1 requires calpain activation for both entry and virus replication. Here, we show that knocking down calpain, using approaches such as small interfering RNA (siRNA), culminates in reduction of MV release, as we showed before with another intracellular pathogen, the protozoan parasite, Trypanosoma cruzi (2). The reduction in MV release then abrogates CVB1 entry and spread in HeLa cells. The calpain inhibitor calpeptin also caused similar reduction in CVB1 entry and spread to healthy target cells. Together, our findings provide evidence that CVB1 infected HeLa cells enhance MV production, and these MVs aid the spread of infection. Furthermore, inhibition of MV release using siRNA results in inhibition of CVB1 entry and spread.en
language isoeng
rightsen
titleCoxsackie virus entry and spread in HeLa cells is aided by microvesicle releaseen
typeConference posteren
contributor institutionDepartment of Biological and Environmental Sciencesen
contributor institutionSchool of Life and Medical Sciencesen
description versionauthorsversionen
description statusPeer revieweden


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