Expression of #microRNA in #human #retinal pigment #epithelial cells following #infection with #Zaire #ebolavirus (BMC Res Notes, abstract)

[Source: US National Library of Medicine, full page: (LINK). Abstract, edited.]

BMC Res Notes. 2019 Oct 1;12(1):639. doi: 10.1186/s13104-019-4671-8.

Expression of microRNA in human retinal pigment epithelial cells following infection with Zaire ebolavirus.

Oliver GF1, Orang AV1, Appukuttan B1, Marri S1, Michael MZ1, Marsh GA2, Smith JR3.

Author information: 1 Flinders University College of Medicine and Public Health, Flinders Medical Centre Room 4E-431, Flinders Drive, Bedford Park, SA, 5042, Australia. 2 Health and Biosecurity, Commonwealth Scientific and Industrial Research Organisation, 5 Portarlington Rd, Newcomb, VIC, 3219, Australia. 3 Flinders University College of Medicine and Public Health, Flinders Medical Centre Room 4E-431, Flinders Drive, Bedford Park, SA, 5042, Australia.




Survivors of Ebola virus disease (EVD) are at risk of developing blinding intraocular inflammation-or uveitis-which is associated with retinal pigment epithelial (RPE) scarring and persistence of live Zaire ebolavirus (EBOV) within the eye. As part of a large research project aimed at defining the human RPE cell response to being infected with EBOV, this work focused on the microRNAs (miRNAs) associated with the infection.


Using RNA-sequencing, we detected 13 highly induced and 2 highly repressed human miRNAs in human ARPE-19 RPE cells infected with EBOV, including hsa-miR-1307-5p, hsa-miR-29b-3p and hsa-miR-33a-5p (up-regulated), and hsa-miR-3074-3p and hsa-miR-27b-5p (down-regulated). EBOV-miR-1-5p was also found in infected RPE cells. Through computational identification of putative miRNA targets, we predicted a broad range of regulatory activities, including effects on innate and adaptive immune responses, cellular metabolism, cell cycle progression, apoptosis and autophagy. The most highly-connected molecule in the miR-target network was leucine-rich repeat kinase 2, which is involved in neuroinflammation and lysosomal processing. Our findings should stimulate new studies on the impact of miRNA changes in EBOV-infected RPE cells to further understanding of intraocular viral persistence and the pathogenesis of uveitis in EVD survivors.

KEYWORDS: Ebola; Filovirus; Retina; Retinal pigment epithelium; Uveitis; Zaire ebolavirus; microRNA

PMID: 31570108 DOI: 10.1186/s13104-019-4671-8

Keywords: Ebola; ZEBOV; Viral pathogenesis.


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Giuseppe Michieli

I am an Italian blogger, active since 2005 with main focus on emerging infectious diseases such as avian influenza, SARS, antibiotics resistance, and many other global Health issues. Other fields of interest are: climate change, global warming, geological and biological sciences. My activity consists mainly in collection and analysis of news, public services updates, confronting sources and making decision about what are the 'signals' of an impending crisis (an outbreak, for example). When a signal is detected, I follow traces during the entire course of an event. I started in 2005 my blog ''A TIME'S MEMORY'', now with more than 40,000 posts and 3 millions of web interactions. Subsequently I added an Italian Language blog, then discontinued because of very low traffic and interest. I contributed for seven years to a public forum ( in the midst of the Ebola epidemic in West Africa in 2014, I left the site to continue alone my data tracking job.