1. From Day 1, SARS-COV-2 was very well adapted to humans .....and transgenic hACE2 Mice
— Billy Bostickson \U0001f3f4\U0001f441&\U0001f441 \U0001f193 (@BillyBostickson) January 30, 2021
"we generated a mouse model expressing hACE2 by using CRISPR/Cas9 knockin technology. In comparison with wild-type C57BL/6 mice, both young & aged hACE2 mice sustained high viral loads... pic.twitter.com/j94XtSkscj
@NBA @StephenKissler @yhgrad B.1.1.7 reveals clearly that SARS-CoV-2 is reverting to its original pre-outbreak condition, i.e. adapted to transgenic hACE2 mice (either Baric's BALB/c ones or others used at WIV labs during chimeric bat coronavirus experiments aimed at developing a pan betacoronavirus vaccine)
1. High Probability of serial passaging in Transgenic Mice expressing hACE2 in genesis of SARS-COV-2!
— Billy Bostickson \U0001f3f4\U0001f441&\U0001f441 \U0001f193 (@BillyBostickson) January 2, 2021
2 papers:
Human\u2013viral molecular mimicryhttps://t.co/irfH0Zgrve
Molecular Mimicryhttps://t.co/yLQoUtfS6s https://t.co/lsCv2iMEQz
https://t.co/9Z4oJmkcKj
https://t.co/I90OOCJg7o
A mink-associated variant carrying Δ(69-70)-Y453F-F486L-N501T-M1229I mutations was also able to utilize mouse Ace2. In addition, all variants carrying an N501Y mutation, a shared feature of UK, South Africa, & Brazil VOC strains, efficiently use mouse Ace2 orthologs.
"Moreover, the K417N-E484K-N501Y mutations found in the South Africa variant 501Y.V2 even enable the virus to utilize rat Ace2 more efficiently than using human ACE2. These data suggest that rats and mice may (have) be(en) able to harbor and spread these variants"?
Circulating SARS-CoV-2 variants B.1.1.7, 501Y.V2, and P.1 have gained ability to utilize rat and mouse Ace2 and altered in vitro sensitivity to neutralizing antibodies and ACE2-Ig
https://t.co/j9qEcUz4ea
Well worth a read!
MASCp6 genome contains 5 mutations compared to its parental strain IME-BJ05, resulting in four amino acid residue changes in the ORF1ab, S, and N genes, respectively (Fig. 3A)
Adaptation of SARS-CoV-2 in BALB/c mice
https://t.co/I90OOCJg7o
A) open reading frames (dark purple arrows) and proteins resulting from cleavage of ORF1ab polypeptide into non-structural proteins (light purple). 17 protein-coding mutations are annotated (top)
https://t.co/FOfZg8SiQU
https://t.co/fBHaTllKvJ
Virology: the problem with ‘leaky’ vaccines
Fresh evidence supports the theory that some vaccines lead to the evolution of more virulent viral strains
https://t.co/ttyM9J2idI
More from Billy Bostickson 🏴👁&👁 🆓
1. WIV Research groups (archived pages) for Reference
dsRNA viruses molecular biology
https://t.co/lwrQoo6ygG
2. Emerging Viruses Group
https://t.co/ND56gVGOAn
3. Structural Biology of Viral Genome Replication
https://t.co/wUqc0YIP3X
4. Molecular Biology of hepatitis Viruses & Gene Therapy
https://t.co/snBbxkhNsC
5. Insect Virus Genetic Engineering Lab
https://t.co/S68mVOA2Ob
dsRNA viruses molecular biology
https://t.co/lwrQoo6ygG
2. Emerging Viruses Group
https://t.co/ND56gVGOAn
3. Structural Biology of Viral Genome Replication
https://t.co/wUqc0YIP3X
4. Molecular Biology of hepatitis Viruses & Gene Therapy
https://t.co/snBbxkhNsC
5. Insect Virus Genetic Engineering Lab
https://t.co/S68mVOA2Ob
Keep dwelling on this:
Further Examination of the Motif near PRRA Reveals Close Structural Similarity to the SEB Superantigen as well as Sequence Similarities to Neurotoxins and a Viral SAg.
The insertion PRRA together with 7 sequentially preceding residues & succeeding R685 (conserved in β-CoVs) form a motif, Y674QTQTNSPRRAR685, homologous to those of neurotoxins from Ophiophagus (cobra) and Bungarus genera, as well as neurotoxin-like regions from three RABV strains
(20) (Fig. 2D). We further noticed that the same segment bears close similarity to the HIV-1 glycoprotein gp120 SAg motif F164 to V174.
https://t.co/EwwJOSa8RK
In (B), the segment S680PPRAR685 including the PRRA insert and highly conserved cleavage site *R685* is shown in van der Waals representation (black labels) and nearby CDR residues of the TCRVβ domain are labeled in blue/white
https://t.co/BsY8BAIzDa
Sequence Identity %
https://t.co/BsY8BAIzDa
Y674 - QTQTNSPRRA - R685
Similar to neurotoxins from Ophiophagus (cobra) & Bungarus genera & neurotoxin-like regions from three RABV strains
T678 - NSPRRA- R685
Superantigenic core, consistently aligned against bacterial or viral SAgs
Further Examination of the Motif near PRRA Reveals Close Structural Similarity to the SEB Superantigen as well as Sequence Similarities to Neurotoxins and a Viral SAg.
The insertion PRRA together with 7 sequentially preceding residues & succeeding R685 (conserved in β-CoVs) form a motif, Y674QTQTNSPRRAR685, homologous to those of neurotoxins from Ophiophagus (cobra) and Bungarus genera, as well as neurotoxin-like regions from three RABV strains
(20) (Fig. 2D). We further noticed that the same segment bears close similarity to the HIV-1 glycoprotein gp120 SAg motif F164 to V174.
https://t.co/EwwJOSa8RK
In (B), the segment S680PPRAR685 including the PRRA insert and highly conserved cleavage site *R685* is shown in van der Waals representation (black labels) and nearby CDR residues of the TCRVβ domain are labeled in blue/white
https://t.co/BsY8BAIzDa
Sequence Identity %
https://t.co/BsY8BAIzDa
Y674 - QTQTNSPRRA - R685
Similar to neurotoxins from Ophiophagus (cobra) & Bungarus genera & neurotoxin-like regions from three RABV strains
T678 - NSPRRA- R685
Superantigenic core, consistently aligned against bacterial or viral SAgs
1. Some useful, albeit not fully developed, critiques of:
“The Origins of SARS-CoV-2: A Critical Review"
https://t.co/C9TyRyqHUr
have just been published here:
https://t.co/qCmzGCzRxn
by members of DRASTIC & others
@angoffinet @BahulikarRahul @MonaRahalkar @gdemaneuf
2. A refreshing contrast to the so-called "expert reactions" found here, including from one of the authors of the review (Prof David Robertson)!
"expert reaction to a preprint reviewing the evidence on the origins of SARS-CoV-2"
https://t.co/6kG6rstweP
3. Peter Gutierrez points out in his response that 4 of the authors of “The Origins of SARS-CoV-2: A Critical Review”, also wrote “Proximal Origin of SARS-COV-2”.
His critique focuses on:
1. RaTG13
2. Enhanced adaptation to the human host
https://t.co/eW8b2iK5xe
4. As to be expected, Sydney University and its iconic virologist, Eddie Holmes, who is "not available for interview", are crowing over this biased review
https://t.co/xrjpN1NxpO
This review contains elementary errors as exposed here:
1. https://t.co/YJ50huifly
one of the authors (Stuart Neil) then claimed
"Didn’t N501Y come up in ACE2 TG mice too?
https://t.co/HscNSEKdrZ
“The Origins of SARS-CoV-2: A Critical Review"
https://t.co/C9TyRyqHUr
have just been published here:
https://t.co/qCmzGCzRxn
by members of DRASTIC & others
@angoffinet @BahulikarRahul @MonaRahalkar @gdemaneuf
2. A refreshing contrast to the so-called "expert reactions" found here, including from one of the authors of the review (Prof David Robertson)!
"expert reaction to a preprint reviewing the evidence on the origins of SARS-CoV-2"
https://t.co/6kG6rstweP
3. Peter Gutierrez points out in his response that 4 of the authors of “The Origins of SARS-CoV-2: A Critical Review”, also wrote “Proximal Origin of SARS-COV-2”.
His critique focuses on:
1. RaTG13
2. Enhanced adaptation to the human host
https://t.co/eW8b2iK5xe
4. As to be expected, Sydney University and its iconic virologist, Eddie Holmes, who is "not available for interview", are crowing over this biased review
https://t.co/xrjpN1NxpO
This review contains elementary errors as exposed here:
1. https://t.co/YJ50huifly
one of the authors (Stuart Neil) then claimed
"Didn’t N501Y come up in ACE2 TG mice too?
https://t.co/HscNSEKdrZ
All your natural origin friends in one place ;)
— Billy Bostickson \U0001f3f4\U0001f441&\U0001f441 \U0001f193 (@BillyBostickson) July 7, 2021
Origins of SARS-CoV-2: A Critical Reviewhttps://t.co/j4A4rtmi8S
via @Topo_Ligio
Fallacy of the "straw mouse", denying evolution in wild type mice, when the claim is actually that it may have "evolved" in hACE2 mice, NOT wild mice. pic.twitter.com/7LCnSAhw6g
November 3 - 9, 2019 -Wuhan Institute of Virology
International Training Course on Biosafety Laboratory Management and Technology
1. Daniel Feakes, head of UN Biological Weapons Convention implementation support agency
2. René Courcol, quality control system expert, France's BSL
List of Lecturers with short bios at
November 3 - 9, WIV Training Course: https://t.co/Bsd9yO40JP
YUAN Zhiming Professor, Wuhan Institute of Virology, CAS (Deputy Director)
SONG Donglin, Professor, Wuhan Institute of Virology, CAS ( Deputy Director of Wuhan BSL-4 Laboratory.)
Dr. TONG Xiao Senior Engineer at WIV (Molecular Virology & (HIV) infection, mechanical & vaccine immunology) On-site Manager & Chief engineer for WIV BSL-4 Lab construction, maintenance & biosafety equipment R&D.
Zhengli Shi, Director of WIV Center for Emerging Infectious Diseases, now in charge of scientific activity in BSL3 & BSL4. Viral pathogen discovery through sequencing techniques, wildlife-borne viral pathogens, particularly bat-borne viruses since 2004.
DENG Fei, Principle Investigator in Research Group on Viruses Resources & Biotechnology in WIV, also Director of Microorganisms & Viruses Resource Center.
Graduate of ECUST, went to Great Lakes Forestry Center, Canada in 2001 & Wageningen University, NL to study baculovirus.
International Training Course on Biosafety Laboratory Management and Technology
1. Daniel Feakes, head of UN Biological Weapons Convention implementation support agency
2. René Courcol, quality control system expert, France's BSL
List of Lecturers with short bios at
November 3 - 9, WIV Training Course: https://t.co/Bsd9yO40JP
YUAN Zhiming Professor, Wuhan Institute of Virology, CAS (Deputy Director)
SONG Donglin, Professor, Wuhan Institute of Virology, CAS ( Deputy Director of Wuhan BSL-4 Laboratory.)
Dr. TONG Xiao Senior Engineer at WIV (Molecular Virology & (HIV) infection, mechanical & vaccine immunology) On-site Manager & Chief engineer for WIV BSL-4 Lab construction, maintenance & biosafety equipment R&D.
Zhengli Shi, Director of WIV Center for Emerging Infectious Diseases, now in charge of scientific activity in BSL3 & BSL4. Viral pathogen discovery through sequencing techniques, wildlife-borne viral pathogens, particularly bat-borne viruses since 2004.
DENG Fei, Principle Investigator in Research Group on Viruses Resources & Biotechnology in WIV, also Director of Microorganisms & Viruses Resource Center.
Graduate of ECUST, went to Great Lakes Forestry Center, Canada in 2001 & Wageningen University, NL to study baculovirus.
