Deltaretrovirus
| Deltaretrovirus | |
|---|---|
Virus classification 
| |
| (unranked): | Virus |
| Realm: | Riboviria |
| Kingdom: | Pararnavirae |
| Phylum: | Artverviricota |
| Class: | Revtraviricetes |
| Order: | Ortervirales |
| Family: | Retroviridae |
| Subfamily: | Orthoretrovirinae |
| Genus: | Deltaretrovirus |
| Species | |
Deltaretrovirus is a genus of the Retroviridae family. It consists of exogenous horizontally transmitted viruses found in several groups of mammals. As of 2023[update], ICTV lists under this genus the Bovine leukemia virus and three species of primate T-lymphotropic virus.
The genus of viruses is known for its propensity to target immune cells and oncogenicity, evident in the names of the four named species.[1] Infection is usually asymptomatic, but inflammation and cancer can develop over time.[2]
Classification
[edit]Four species are recognized by the ICTV as of 2023:
- Bovine leukemia virus
- Primate T-lymphotropic virus 1
- Primate T-lymphotropic virus 2
- Primate T-lymphotropic virus 3
Two additional PTLVs are known but not recognized: HTLV-4 (South Cameroon, 2005) and STLV-5 (Mac B43 strain, highly divergent PTLV-1).[3]
In addition, eight endogenous retroviruses identified as Deltaretrovirus are known as of 2019. Two of these were complete enough to show ORFs; the rest only showing long terminal repeats.[1]
Hosts
[edit]Known exogenous deltaretroviruses infect cattle and primates.[1]
The two complete endogenous ones were found in bats and dolphins; the others in Solenodon, mongoose, and fossa. These endogenous examples fill in the large gap in the host range.[1]
Clinical relevance
[edit]References
[edit]- ^ a b c d Hron, T; Elleder, D; Gifford, RJ (27 November 2019). "Deltaretroviruses have circulated since at least the Paleogene and infected a broad range of mammalian species". Retrovirology. 16 (1): 33. doi:10.1186/s12977-019-0495-9. PMC 6882180. PMID 31775783.
- ^ Farkašová, H; Hron, T; Pačes, J; Hulva, P; Benda, P; Gifford, RJ; Elleder, D (21 March 2017). "Discovery of an endogenous Deltaretrovirus in the genome of long-fingered bats (Chiroptera: Miniopteridae)". Proceedings of the National Academy of Sciences of the United States of America. 114 (12): 3145–3150. Bibcode:2017PNAS..114.3145F. doi:10.1073/pnas.1621224114. PMC 5373376. PMID 28280099.
- ^ Mahieux, R; Gessain, A (July 2011). "HTLV-3/STLV-3 and HTLV-4 viruses: discovery, epidemiology, serology and molecular aspects". Viruses. 3 (7): 1074–90. doi:10.3390/v3071074. PMC 3185789. PMID 21994771.
External links
[edit]- Deltaretrovirus at the U.S. National Library of Medicine Medical Subject Headings (MeSH)
- Viralzone: Deltaretrovirus
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