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Sahmi-Bounsiar D, Rolland C, Aherfi S, Boudjemaa H, Levasseur A, La Scola B, Colson P. Marseilleviruses: An Update in 2021. Front Microbiol 2021; 12:648731. [PMID: 34149639 PMCID: PMC8208085 DOI: 10.3389/fmicb.2021.648731] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2021] [Accepted: 04/12/2021] [Indexed: 01/19/2023] Open
Abstract
The family Marseilleviridae was the second family of giant viruses that was described in 2013, after the family Mimiviridae. Marseillevirus marseillevirus, isolated in 2007 by coculture on Acanthamoeba polyphaga, is the prototype member of this family. Afterward, the worldwide distribution of marseilleviruses was revealed through their isolation from samples of various types and sources. Thus, 62 were isolated from environmental water, one from soil, one from a dipteran, one from mussels, and two from asymptomatic humans, which led to the description of 67 marseillevirus isolates, including 21 by the IHU Méditerranée Infection in France. Recently, five marseillevirus genomes were assembled from deep sea sediment in Norway. Isolated marseilleviruses have ≈250 nm long icosahedral capsids and 348–404 kilobase long mosaic genomes that encode 386–545 predicted proteins. Comparative genomic analyses indicate that the family Marseilleviridae includes five lineages and possesses a pangenome composed of 3,082 clusters of genes. The detection of marseilleviruses in both symptomatic and asymptomatic humans in stool, blood, and lymph nodes, and an up-to-30-day persistence of marseillevirus in rats and mice, raise questions concerning their possible clinical significance that are still under investigation.
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Affiliation(s)
- Dehia Sahmi-Bounsiar
- IHU Méditerranée Infection, Marseille, France.,Institut de Recherche pour le Développement (IRD), Assistance Publique- Hôpitaux de Marseille (AP-HM), MEPHI, Aix-Marseille Université, Marseille, France
| | - Clara Rolland
- IHU Méditerranée Infection, Marseille, France.,Institut de Recherche pour le Développement (IRD), Assistance Publique- Hôpitaux de Marseille (AP-HM), MEPHI, Aix-Marseille Université, Marseille, France
| | - Sarah Aherfi
- IHU Méditerranée Infection, Marseille, France.,Institut de Recherche pour le Développement (IRD), Assistance Publique- Hôpitaux de Marseille (AP-HM), MEPHI, Aix-Marseille Université, Marseille, France
| | - Hadjer Boudjemaa
- IHU Méditerranée Infection, Marseille, France.,Department of Biology, Faculty of Natural Science and Life, Hassiba Benbouali University of Chlef, Chlef, Algeria
| | - Anthony Levasseur
- IHU Méditerranée Infection, Marseille, France.,Institut de Recherche pour le Développement (IRD), Assistance Publique- Hôpitaux de Marseille (AP-HM), MEPHI, Aix-Marseille Université, Marseille, France
| | - Bernard La Scola
- IHU Méditerranée Infection, Marseille, France.,Institut de Recherche pour le Développement (IRD), Assistance Publique- Hôpitaux de Marseille (AP-HM), MEPHI, Aix-Marseille Université, Marseille, France
| | - Philippe Colson
- IHU Méditerranée Infection, Marseille, France.,Institut de Recherche pour le Développement (IRD), Assistance Publique- Hôpitaux de Marseille (AP-HM), MEPHI, Aix-Marseille Université, Marseille, France
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Lusi EA. Oncogenic Giant Microbes-Comment on the recent article "Unity and diversity among viral kinases" by Srinivasan and co-workers, published on Gene 2020 Jan 10;723. Gene 2020; 734:144385. [PMID: 31978507 DOI: 10.1016/j.gene.2020.144385] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2019] [Revised: 01/07/2020] [Accepted: 01/17/2020] [Indexed: 02/07/2023]
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