Crazy in 2015 UNC created a coronavirus from bats...

2,735 Views | 10 Replies | Last: 6 yr ago by agdaddy04
P.U.T.U
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AG
Guess it was not on the list of vaccine priorities but they were onto something. For the tin foil hat types keep note that UNC Project China is a collaboration between UNC and China on infectious diseases.

SARS like virus from bats in 2015

Quote:

Erratum in
Abstract
The emergence of severe acute respiratory syndrome coronavirus (SARS-CoV) and Middle East respiratory syndrome (MERS)-CoV underscores the threat of cross-species transmission events leading to outbreaks in humans. Here we examine the disease potential of a SARS-like virus, SHC014-CoV, which is currently circulating in Chinese horseshoe bat populations. Using the SARS-CoV reverse genetics system, we generated and characterized a chimeric virus expressing the spike of bat coronavirus SHC014 in a mouse-adapted SARS-CoV backbone. The results indicate that group 2b viruses encoding the SHC014 spike in a wild-type backbone can efficiently use multiple orthologs of the SARS receptor human angiotensin converting enzyme II (ACE2), replicate efficiently in primary human airway cells and achieve in vitro titers equivalent to epidemic strains of SARS-CoV. Additionally, in vivo experiments demonstrate replication of the chimeric virus in mouse lung with notable pathogenesis. Evaluation of available SARS-based immune-therapeutic and prophylactic modalities revealed poor efficacy; both monoclonal antibody and vaccine approaches failed to neutralize and protect from infection with CoVs using the novel spike protein. On the basis of these findings, we synthetically re-derived an infectious full-length SHC014 recombinant virus and demonstrate robust viral replication both in vitro and in vivo. Our work suggests a potential risk of SARS-CoV re-emergence from viruses currently circulating in bat populations.
Bob_Ag
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AG
Good article, they pretty much nailed it. I think the prevailing notion is that similar to other recent coronavirus epidemics in China and the Middle East, there was a decent likelihood we would see another cross species jump into humans and eventually one would end up being deadly. The biggest issue with this one is how it became so pathogenic so quickly. Either it evolved that way before the jump or made the jump then naturally acquired it, but I tend to think the former. Either way, sequencing has revealed similarities to other bat coronaviruses suggesting it did perhaps come from them or an intermediary.

JB99
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AG
What are the odds it evolves again into something more deadly?
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Ranger222
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AG
Bob_Ag said:

Good article, they pretty much nailed it. I think the prevailing notion is that similar to other recent coronavirus epidemics in China and the Middle East, there was a decent likelihood we would see another cross species jump into humans and eventually one would end up being deadly. The biggest issue with this one is how it became so pathogenic so quickly. Either it evolved that way before the jump or made the jump then naturally acquired it, but I tend to think the former. Either way, sequencing has revealed similarities to other bat coronaviruses suggesting it did perhaps come from them or an intermediary.




It is known that a reason that this SARS-COV-2 is so infectious is that it carries mutations within its spike protein that allows it to bind to the human ACE2 receptor 10x more efficiently compared to the original SARS.

Regarding host, it was most likely a bat as bat Coronavirus' share 99% sequence homology to humans. Other mammals or rodents like the pangolan which has been theorized is only 90% and much less likely of a source. Either an infected bat was brought to the market, or an infected human who had recently visited a cave came to the market and spread to others.

There are two or three known open reading frames or ORFs within the viral sequence which are seeing the highest mutation rate. There was been speculation as to what protein products these ORFs encode for but to my knowledge it is not known. Mutations within essential genes like the RNA polymerase will just burn out quickly.
HeardAboutPerio
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AG
Supposedly one of the Chinese authors now works at biohazard lab in Wuhan. This made the rounds a few weeks ago in the conspiracy theory days.
Bob_Ag
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AG
Ranger222 said:

Bob_Ag said:

Good article, they pretty much nailed it. I think the prevailing notion is that similar to other recent coronavirus epidemics in China and the Middle East, there was a decent likelihood we would see another cross species jump into humans and eventually one would end up being deadly. The biggest issue with this one is how it became so pathogenic so quickly. Either it evolved that way before the jump or made the jump then naturally acquired it, but I tend to think the former. Either way, sequencing has revealed similarities to other bat coronaviruses suggesting it did perhaps come from them or an intermediary.




It is known that a reason that this SARS-COV-2 is so infectious is that it carries mutations within its spike protein that allows it to bind to the human ACE2 receptor 10x more efficiently compared to the original SARS.

Regarding host, it was most likely a bat as bat Coronavirus' share 99% sequence homology to humans. Other mammals or rodents like the pangolan which has been theorized is only 90% and much less likely of a source. Either an infected bat was brought to the market, or an infected human who had recently visited a cave came to the market and spread to others.

There are two or three known open reading frames or ORFs within the viral sequence which are seeing the highest mutation rate. There was been speculation as to what protein products these ORFs encode for but to my knowledge it is not known. Mutations within essential genes like the RNA polymerase will just burn out quickly.
Is it possible that certain regions of the world have strains of virus with mutations in say the ACE2 binding sites that make them less efficient and that is why we see some discrepancies in infection and death rates? I know that's a big question and hard to answer.

I was never a virologist, but my PhD is in biochemistry, although I no longer work in the field. I'm trying to remember back as I did rotations and undergrad research in a lab that worked on p h a g e s.

Edit: apparently the word p h a g e is filtered.
TRADUCTOR
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HeardAboutPerio said:

Supposedly one of the Chinese authors now works at biohazard lab in Wuhan. This made the rounds a few weeks ago in the conspiracy theory days.
Chimichanga chimeric conspiracy theory days are so over with this coincidence.
Snap E Tom
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HeardAboutPerio said:

Supposedly one of the Chinese authors now works at biohazard lab in Wuhan. This made the rounds a few weeks ago in the conspiracy theory days.
https://en.wikipedia.org/wiki/Shi_Zhengli
HeardAboutPerio
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AG
Snap E Tom said:

HeardAboutPerio said:

Supposedly one of the Chinese authors now works at biohazard lab in Wuhan. This made the rounds a few weeks ago in the conspiracy theory days.
https://en.wikipedia.org/wiki/Shi_Zhengli


Yes that's what was being reported a few weeks ago.

To clarify, I wasn't saying that the fact that she works in Wuhan and was Involved as investigator at UNC is a conspiracy theory, I was saying this information was being included with a ton of conspiracy theories as supporting evidence to validate the numerous theories being promoted. Sorry for any confusion.
Herne the Hunter
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Did the Chinese not understand they weren't supposed to eat the bats at the end of the
Stand Back & Stand By
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agdaddy04
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AG
At the end of the what? Did the virus get you?
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