期刊
MOLECULAR MEDICINE REPORTS
卷 25, 期 6, 页码 -出版社
SPANDIDOS PUBL LTD
DOI: 10.3892/mmr.2022.12723
关键词
Mimivirus; Acanthamoeba polyphaga; Mimivirus virophage resistance element; virophages; Marseilleviridae
资金
- European Union's European Social Fund and Greek National Funds through the Program THALIS
The Mimivirus is a giant virus that infects amoebae and has distinctive characteristics, such as large viral particles and replication process without entering the nucleus. Although their existence is undeniable, there is still uncertainty concerning their pathogenicity mechanisms in humans and the nature of their immune network.
The Mimivirus is a giant virus that infects amoebae and was long considered to be a bacterium due to its size. The viral particles are composed of a protein capsid of similar to 500 nm in diameter, which is enclosed in a polysaccharide layer in which similar to 120-140 nm long fibers are embedded, resulting in an overall diameter of 700 nm. The virus has a genome size of 1.2 Mb DNA, and surprisingly, replicates only in the cytoplasm of the infected cells without entering the nucleus, which is a unique characteristic among DNA viruses. Their existence is undeniable; however, as with any novel discovery, there is still uncertainty concerning their pathogenicity mechanisms in humans and the nature of the Mimivirus virophage resistance element system (MIMIVIRE), a term given to describe the immune network of the Mimivirus, which closely resembles the CRISPR-Cas system. The scope of the present review is to discuss the recent developments derived from structural and functional studies performed on the distinctive characteristics of the Mimivirus, and from studies concerning their putative clinical relevance in humans.
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