Peter Simmonds@Simmonds_Lab
23 Jun 2024United Kingdom
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Here is my re-visiting of the C->U hypermutation phenomenon in SARS-CoV-2 genome 4 years from the start of the COVID pandemic:
tinyurl.com/mw3ezp6c
A trajectory of loss of C's / gain of U's, but weak 5' context effect and RNA structure dependence on edited sites. APOBEC 3A??
Peter Simmonds@Simmonds_Lab
19 Feb 2023United Kingdom
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Replying to @AdrianJ44426152 @simroux_virus
The downloadable ICTV Virus Metadata Resource contains information of virus names and the taxon they are assigned to:
ictv.global/vmr
As an example, here is the listing for members of the genus Hepacivirus. Is this what you meant?
Peter Simmonds@Simmonds_Lab
16 Feb 2023United Kingdom
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We believe these principles can be used to create a coherent and logical organisational structure for virus taxonomy that can incorporate the vast diversity of viruses that exist in the world.
Peter Simmonds@Simmonds_Lab
16 Feb 2023United Kingdom
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Four principles to establish a universal virus taxonomy
journals.plos.org/plosbiolog…
It was a wonderful experience to share a workshop with world experts on virus diversity, genomics and classification.
Peter Simmonds@Simmonds_Lab
23 Sep 2022United Kingdom
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Many congratulations @josegabrielnb
, not just for the fascinating and enlightening discussion during the viva, but also for that body of great work on mavericks and virus evolutionary history. A fantastic DPhil! Great also to meet with Alex @alexander_suh, many shared interests
Peter Simmonds@Simmonds_Lab
23 Sep 2022United Kingdom
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Replying to @ArisKatzourakis
Well, the Oxford comma does prevent this (published!) book dedication being misunderstood:
To my parents, Ayn Rand and God.
Spiritual ancestry indeed! or:
Among those interviewed were his two ex-wives, Kris Kristofferson and Robert Duvall
I never knew! Thanks Wikepedia,
Peter Simmonds@Simmonds_Lab
25 Nov 2021United Kingdom
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We will be starting a major project to apply genomics to blood and transplant donor microbiology screening. We have project manager, post-doctoral and several funded PhD positions in Oxford and UCL - Apr/22. Great collaborative work with NHSBT:
Links to follow
Please RT!
Peter Simmonds@Simmonds_Lab
22 Jun 2021United Kingdom
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Very nice article comprehensively reviewing aspects of compositional bias in RNA viruses & interrelationships with still poorly characterised cellular mechanisms responding to RNA sequence motifs - ZAP, APOBECs, ADAR & many more, and selection biases from effects on translation
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1/2 Our review article about genome composition biases in RNA viruses is now online: onlinelibrary.wiley.com/doi/….
TL:DR (it is long): 1. Composition biases occur at mono- and di- nucleotide level and beyond, at amino acid level and codon pairs.
Peter Simmonds@Simmonds_Lab
2 Jun 2021United Kingdom
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Very experimental but also very surprising, here is some evidence for excess C->U changes in a range of mammalian RNA viruses, potentially related to the much discussed phenomenon in SARS-CoV-2:
doi.org/10.1371/journal.ppat…
Consequences for virus evolution: interesting.....
Peter Simmonds@Simmonds_Lab
30 May 2021United Kingdom
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As some may know, Finnish doesn't have separate b's and p's, so new words may be a bit of a guess - usually right but not always!
Peter Simmonds@Simmonds_Lab
27 Apr 2021United Kingdom
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This adaptive compromise of genome compositions in dual host viruses suggests a potential role for ZAP in defence against arboviruses but is that really all it's there for? Given its evolutionary history, ZAP must have a much more fundamental role in innate immunity but what?
Peter Simmonds@Simmonds_Lab
27 Apr 2021United Kingdom
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We certainly found that for arboviruses, there is is evidence for conflicting evolutionary selection pressures - CpG-high mutants of Zika virus grow better in mosquito cells that WT virus:
doi.org/10.1371/journal.pbio…
Peter Simmonds@Simmonds_Lab
27 Apr 2021United Kingdom
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A fascinating, thoughtful analysis of ZAP evolution, and informative comparative approach across verterbrate lineages. I'm sure I'm missing something here, but you have to wonder what else is involved in its antiviral role if RNA viruses circumvent it by simply suppressing CpG?
New Paper from @DanSalves and colleagues in #PLOSPathogens: Origin and evolution of the zinc finger antiviral protein dx.plos.org/10.1371/journal.…
Peter Simmonds@Simmonds_Lab
22 Apr 2021United Kingdom
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Job available on Oxford: 1 year post-doc investigating neutralising antibody responses to SARS-CoV-2 infections, serological assay comparisons and their application for COVID plasma and immune Ig treatment. Training in BSL3 working provided - contact [email protected]
Peter Simmonds@Simmonds_Lab
5 Mar 2021United Kingdom
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Some interesting new data on SARS-CoV-2 B.1.1.7 infections from @jeremyratcliff and the lab, @HarvalHeliand & UK REMAP-CAP team
medrxiv.org/content/10.1101/…
Compared to WT, B.1.1.7 shows no intrinsic replication advantage but viral loads remain high even after Ab seroconversion
Peter Simmonds@Simmonds_Lab
10 Feb 2021United Kingdom
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One of the fascinating implications of the model is how it redates the LCA of HCV to >300,000 BP before humans' Out-of-Africa migration. Maybe HCV did evolve within humans - genotype distributions may partly reflect geograhical /migrational separations
doi.org/10.1101/2021.02.09.4…
Peter Simmonds@Simmonds_Lab
10 Feb 2021United Kingdom
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Great to see Mahan @Mahan_Ghafari, Aris Katzourakis's @ArisKatzourakis brilliant PhD student taking on ideas in the Prisoner of War model of virus evolution and putting them into a mathematical framework:
doi.org/10.1101/2021.02.09.4…
Vastly expanded evolutionary time frames.....
Peter Simmonds@Simmonds_Lab
18 Jan 2021United Kingdom
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Extraordinary data, I do wonder how much long COVID disease is post-replication inflammatory damage and how much originates from ongoing viral replication
See our review:
doi.org/10.1099/jgv.0.001545
Great to see further virological investigations with more intensive sampling
Eye watering numbers from Ayoubkhani et al. medrxiv.org/content/10.1101/…
12.7% diagnosed with NEW respiratory disease post discharge (I wonder what that cud b🤔) Readmission & mortality rates post discharge r way 2 high. Need urgent interventional trial! @charlot_summers @mark_toshner
Peter Simmonds@Simmonds_Lab
17 Dec 2020United Kingdom
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I don't think persistent replication of SARS-CoV-2 directly causes "long COVID":
ons.gov.uk/news/statementsan…
but clearly COVID-19 isn't a typical respiratory infection either. See our review of prolonged infections and mechanisms:
microbiologyresearch.org/con…
Peter Simmonds@Simmonds_Lab
3 Jun 2020United Kingdom
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Shared SARS-CoV-2 diversity suggests localised transmission of minority variants biorxiv.org/content/10.1101/…