The rearranged TCRα and TCRβ chains from 2D2 genomic DNA were analyzed by sequencing. The amino acid sequence of the CDR3 regions is as follows: TCRα, VYF CALRSY NFG; TCRβ, CASS LDCG ANP. The Vα3.2Jα18 and Vβ11DJβ1.1 regions of 2D2 TCR were amplified by PCR from genomic DNA with specific primers. PCR products were cloned into TCR expression cassettes (26 (link)). Linearized TCR containing plasmids were injected directly into the pronuclei of fertilized C57Bl/6 oocytes. Transgenic founders were identified by PCR using specific primers for 2D2 Vα-Jα and Vβ-Jβ regions. Transgenic founder mice were bred with C57Bl/6 mice (The Jackson Laboratory). Alternatively, 2D2 TCR transgenic mice were bred with C57Bl/6 RAG-1−/− (The Jackson Laboratory) and then intercrossed to generate 2D2 TCR transgenic RAG-1−/− mice. Routine screening to identify the transgenic mice was performed by FACS® analysis from blood using specific antibodies to Vβ11 or Vα3.2. For phenotyping, the blood was always drawn from the tail and not from the eyes of these animals. Mice were housed in a specific pathogen-free/viral antibody-free animal facility at the Harvard Institutes of Medicine. All breeding and experiments were performed in accordance with the guidelines of the committee on Animals of Harvard Medical School.
>
Chemicals & Drugs
>
Amino Acid
>
Antibodies, Viral
Antibodies, Viral
Antibodies and Viral Agents: Exploring the Intersection of Immunology and Virology.
Antibodies are specialized proteins produced by the immune system to recognize and neutralize foreign substances, including viruses.
Viral agents, such as RNA or DNA viruses, are infectious particles that can hijack host cells and replicate, often causing disease.
Understanding the complex interplay between antibodies and viruses is crucial for developing effective treatments, vaccines, and diagnostic tools.
This MeSh term encompasses the study of antibody-mediate dimmune responses to viral infections, as well as the use of antibodies in the detection, prevention, and treatment of viral diseases.
Antibodies are specialized proteins produced by the immune system to recognize and neutralize foreign substances, including viruses.
Viral agents, such as RNA or DNA viruses, are infectious particles that can hijack host cells and replicate, often causing disease.
Understanding the complex interplay between antibodies and viruses is crucial for developing effective treatments, vaccines, and diagnostic tools.
This MeSh term encompasses the study of antibody-mediate dimmune responses to viral infections, as well as the use of antibodies in the detection, prevention, and treatment of viral diseases.
Most cited protocols related to «Antibodies, Viral»
6-chloropenicillanic acid S-sulfoxide
Amino Acid Sequence
Animals
Animals, Transgenic
Antibodies
Antibodies, Viral
BLOOD
DNA Primers
Eye
Founder Mice, Transgenic
Genome
Mice, Inbred C57BL
Mice, Laboratory
Mice, Transgenic
Oligonucleotide Primers
Ovum
Plasmids
Specific Pathogen Free
Tail
T Cell Receptor beta Chain Genes
Protocol full text hidden due to copyright restrictions
Open the protocol to access the free full text link
Antibodies
Antibodies, Neutralizing
Antibodies, Viral
Biological Assay
Cells
Culture Media
Exanthema
Immunoglobulins
Infection
Light
Luciferases
Middle East Respiratory Syndrome Coronavirus
Promega
SARS-CoV-2
Serum
Severe acute respiratory syndrome-related coronavirus
Technique, Dilution
Vero Cells
Virus
The neutralization panel data (IC50 and IC80 values for specific monoclonal antibodies and pseudotyped viruses) were collected from 49 published neutralization studies, mostly from tables in PDF format provided in the supplemental materials. The viral data was collected from Los Alamos HIV Database and in some cases personal communication with the authors, and required careful consideration and systematization to resolve sequence name ambiguities between different laboratories. Antibody sequences were downloaded from GenBank, and links to the structures in Protein Data Bank are provided. Standard statistics are applied to tally and analyze neutralization results. Specifically, antibody associations with viral mutations are evaluated by Fisher's exact test, counting the number of antibody-resistant or antibody-sensitive viruses (above or below threshold of detection) and the presence or absence of specific amino acids or N-glycosylation motif in the viral sequence alignment position (12 (link)).
Amino Acids
Antibodies
Antibodies, Viral
Monoclonal Antibodies
Mutation
Protein Glycosylation
Pseudotyped Viruses
Sequence Alignment
Virus
Antibodies, Viral
Feces
Infection
Pan troglodytes
Reverse Transcriptase Polymerase Chain Reaction
Urine
Western Blot
Amino Acids
Antibodies, Viral
Antigens
Antigens, Viral
Biological Assay
Chickens
Cross Reactions
Ethics Committees, Research
Exanthema
Hemagglutination Inhibition Tests
Hemagglutinin
Immunoglobulin G
Immunoglobulins
Infection
Influenza A Virus, H7N7 Subtype
Influenza in Birds
Luminescence
Microarray Analysis
Mutation
Orthomyxoviridae
Oryctolagus cuniculus
Pandemics
Protein Microarrays
Proteins
Serum
Specimen Collection
Staphylococcal Protein A
Strains
Technique, Dilution
Vaccination
Virus
Viruses, Fowl Plague
Virus Vaccine, Influenza
Most recents protocols related to «Antibodies, Viral»
Activity 3 starts with the instructor explaining
that, after the interaction of the spike protein with the entry receptor
ACE2, cleavage of the S1 domain is achieved by a protease. Proteolytic
cleavage is followed by conformational changes in S2, which allows
the fusion of the virus with the cellular membranes leading to the
cytoplasmatic release of the viral genome into the host cell.15 (link) Because the viral genome must access the cytoplasm,
every step of this process is important. Understanding the foundations
of these entry mechanisms allows researchers to design vaccines, antibodies,
small molecule inhibitors, and other potential therapeutics targeting
to prevent SARS-CoV-2 access into the host cell.
A brief outline
should be also provided to students about how the body fights illness
and how vaccines work. So, they must know that after bacteria or viruses
enter the human body they start to multiply, giving rise to infection
and causing disease. Immediately, the immune system is activated and
produces antibodies to fight off the infection, but this process requires
a few days, which is why we have symptoms such as fever, headache,
fatigue, or body aches. After the first infection, the immune system
will recognize the germ and will already know how to defend the body.
Vaccines contain attenuated or inactivated parts of a specific organism
which provoke a mimicked infection in the body helping the immune
system to create the specific antibodies. Of course, this simulated
infection can cause some symptoms which are common while the body
creates the new antibodies. Vaccines are the safest and most effective
way of protecting people from infections. Of course, they are not
perfect and a person can develop disease despite having been vaccinated,
although they will be at a much lower risk of becoming seriously ill.
Next, students load and overlay the structures with IDs:7V2A ,16 (link)7TB8 ,17 (link)7WPD ,18 (link)7CZP ,19 (link)7CZQ ,19 (link) and 7JZL (20 (link)) (Figure S5 ).
All are complexes of the spike
protein with antibodies or inhibitors
bonded to the receptor binding domain (RBD). They must answer the
following two questions: (1) why do SARS-CoV-2 vaccines prevent
serious illness and save hundreds of thousands of lives? And
based on what they have learned: (2) what could be the influence
of virus variants on the efficacy of these antibodies, and why?At the end of these activities, most of the students made
the connection
between the observed structural features and the efficacy of vaccines,
concluding by themselves that antibodies or inhibitors act by blocking
the ACE2 binding of the spike protein and, as consequence, the viral
entry into the host cells.
During the sessions, the students
explained to the instructors
their respective answers to the questions and the instructors evaluated
them. In addition, a quick assessment of the student’s learning
can be done using a short questionnaire as such the one provided in
theSI . If desired, it can be carried
out with Kahoot or similar tools.
that, after the interaction of the spike protein with the entry receptor
ACE2, cleavage of the S1 domain is achieved by a protease. Proteolytic
cleavage is followed by conformational changes in S2, which allows
the fusion of the virus with the cellular membranes leading to the
cytoplasmatic release of the viral genome into the host cell.15 (link) Because the viral genome must access the cytoplasm,
every step of this process is important. Understanding the foundations
of these entry mechanisms allows researchers to design vaccines, antibodies,
small molecule inhibitors, and other potential therapeutics targeting
to prevent SARS-CoV-2 access into the host cell.
A brief outline
should be also provided to students about how the body fights illness
and how vaccines work. So, they must know that after bacteria or viruses
enter the human body they start to multiply, giving rise to infection
and causing disease. Immediately, the immune system is activated and
produces antibodies to fight off the infection, but this process requires
a few days, which is why we have symptoms such as fever, headache,
fatigue, or body aches. After the first infection, the immune system
will recognize the germ and will already know how to defend the body.
Vaccines contain attenuated or inactivated parts of a specific organism
which provoke a mimicked infection in the body helping the immune
system to create the specific antibodies. Of course, this simulated
infection can cause some symptoms which are common while the body
creates the new antibodies. Vaccines are the safest and most effective
way of protecting people from infections. Of course, they are not
perfect and a person can develop disease despite having been vaccinated,
although they will be at a much lower risk of becoming seriously ill.
Next, students load and overlay the structures with IDs:
All are complexes of the spike
protein with antibodies or inhibitors
bonded to the receptor binding domain (RBD). They must answer the
following two questions: (1) why do SARS-CoV-2 vaccines prevent
serious illness and save hundreds of thousands of lives? And
based on what they have learned: (2) what could be the influence
of virus variants on the efficacy of these antibodies, and why?At the end of these activities, most of the students made
the connection
between the observed structural features and the efficacy of vaccines,
concluding by themselves that antibodies or inhibitors act by blocking
the ACE2 binding of the spike protein and, as consequence, the viral
entry into the host cells.
During the sessions, the students
explained to the instructors
their respective answers to the questions and the instructors evaluated
them. In addition, a quick assessment of the student’s learning
can be done using a short questionnaire as such the one provided in
the
out with Kahoot or similar tools.
Ache
Angiotensin Converting Enzyme 2
Antibodies
Antibodies, Viral
Bacteria
COVID-19 Vaccines
Cytokinesis
Cytoplasm
Fatigue
Fever
Headache
Human Body
Infection
inhibitors
M protein, multiple myeloma
Peptide Hydrolases
Plasma Membrane
Safety
SARS-CoV-2
Student
System, Immune
Therapeutics
Vaccines
Viral Genome
Virus
Orai1/Orai3fl/fl Mb1-Cre/+ and Orai1/Orai3fl/fl (control) mice were anesthetized with isoflurane and infected intranasally (i.n.) with 105 TCID50 of the laboratory strain A/HK/x31 (x31-IAV) of the influenza A virus subtype H3N2. Lungs were isolated for histology. Mediastinal lymph nodes and bone marrow were used to prepare single-cell suspensions followed by flow cytometric analysis. Serum was harvested for analyzing virus-specific antibody titers.
Antibodies, Viral
Bone Marrow
Cells
Flow Cytometry
Influenza A virus
Isoflurane
Lung
Mediastinum
Mus
Nodes, Lymph
Serum
Strains
COSMO-SPAIN, the World Health Organization (WHO) Behavioral Insights survey on COVID-19 in Spain (12 , 14 ), is coordinated by the Carlos III Health Institute, with the aim of monitoring the behavior and attitudes of the population related to COVID-19 in the country. It consisted on a nationwide, cross sectional panel survey whose field work was entrusted to a consumer research company. In each round, people aged 18 years or older were invited by email to answer an online questionnaire, until gathering a sample that matched the distribution of sociodemographic characteristics of the Spanish general population (age, education, gender and large area of residence). In the 3rd round, 2,655 people residing in Spain were invited to participate, of which 1,777 responded and 1,018 completed the questionnaire on time (15 (link)).
The ENE-COVID survey was developed and driven by the Carlos III Health Institute, the Spanish Ministry of Health, the Spanish Institute of Statistics and the Health Services of all the regions in Spain (13 (link)). Its aims were to investigate the prevalence of SARS-CoV-2 infection in the non-institutionalized population in Spain, overall and at province level, by testing antibodies against the virus and exploring their temporal evolution, and to evaluate factors related to infection. A random sample of 35,883 households was initially selected through a two-stage stratified sampling, with strata formed by province and municipality size. All residents in each household were invited to participate. In the 4th round of the survey, a total of 51,409 subjects participated (54.7% of those eligible). Candidates were invited by phone, and those who accepted were scheduled for a visit in a healthcare center or in their own house. All the participants were tested for SARS-CoV-2 antibodies and answered an epidemiological questionnaire (by phone or in a face-to-face interview). A common training platform was developed for collaborators in the data collection process, and continued contact with the study organizations was allowed to solve possible doubts and homogenize procedures.
Both surveys included information about household composition, allowing identifying those in which children lived. The design of both studies has been previously described in detail (13 (link), 15 (link)).
Protocols of the ENE-COVID and COSMO-SPAIN studies (available athttps://repisalud.isciii.es/handle/20.500.12105/15247 and https://doi.org/10.23668/psycharchives.4877 , respectively), were reviewed and approved by the ethics committee of Carlos III Institute of Health, and participants provided written informed consent to participate.
The ENE-COVID survey was developed and driven by the Carlos III Health Institute, the Spanish Ministry of Health, the Spanish Institute of Statistics and the Health Services of all the regions in Spain (13 (link)). Its aims were to investigate the prevalence of SARS-CoV-2 infection in the non-institutionalized population in Spain, overall and at province level, by testing antibodies against the virus and exploring their temporal evolution, and to evaluate factors related to infection. A random sample of 35,883 households was initially selected through a two-stage stratified sampling, with strata formed by province and municipality size. All residents in each household were invited to participate. In the 4th round of the survey, a total of 51,409 subjects participated (54.7% of those eligible). Candidates were invited by phone, and those who accepted were scheduled for a visit in a healthcare center or in their own house. All the participants were tested for SARS-CoV-2 antibodies and answered an epidemiological questionnaire (by phone or in a face-to-face interview). A common training platform was developed for collaborators in the data collection process, and continued contact with the study organizations was allowed to solve possible doubts and homogenize procedures.
Both surveys included information about household composition, allowing identifying those in which children lived. The design of both studies has been previously described in detail (13 (link), 15 (link)).
Protocols of the ENE-COVID and COSMO-SPAIN studies (available at
Antibodies
Antibodies, Viral
Biological Evolution
Child
COVID 19
Ethics Committees
Face
Gender
Hispanic or Latino
Households
Infection
SARS-CoV-2
Prior to infection, MA90 virus was incubated with a low concentration of antibody (started at 0.01 µg/mL of the UCA), a higher concentration of antibody (one half-log greater than the lower concentration), or no antibody (as a control for cell line adaptation mutations) in 500 µL of flu media supplemented with 1 µg/mL TPCK-treated trypsin for 1 hr at 37°C and 5% CO2. MDCK-SIAT1 cells seeded the day before were washed with PBS and then virus–antibody mixtures were added to the monolayers and incubated for 1 hr at 37°C and 5% CO2, rocking the plate every ~15 min to ensure that the cells did not dry out. Afterward, the viral inoculum was removed, and the cells were washed with PBS before adding fresh flu media supplemented with 1 µg/mL TPCK-treated trypsin. After 2 days, viral growth was judged by cytopathic effect. The well that grew with a higher concentration of antibody was selected for the next passage where the 'low' antibody concentration was the same as the previous passage and the 'high' concentration was a half-log higher. This process was repeated until viral growth was readily detectable at 100 µg/mL of the UCA. If necessary, a hemagglutination assay using turkey red blood cells (Lampire, #7249409) was run to determine whether virus was present. Briefly, twofold dilutions of the virus in PBS were mixed with 0.5% turkey red blood cells and incubated at room temperature for at least 30–45 min before visualization of red blood cell pellets to determine whether virus had grown significantly. Once the virus still grew in 100 µg/mL of the antibody, the virus was passaged one additional time and 100 µg/mL of antibody was additionally added to the media added after infection. The RNA from the escaped virus was isolated using a QIAamp viral RNA mini kit (QIAGEN, #52904), and the full-length HA was amplified using gene-specific primers and the OneStep RT-PCR kit (QIAGEN, #210212). The resulting PCR product was sequenced by Sanger sequencing (Genewiz). The mutation G189E was identified from the sequencing results and produced as a recombinant protein for subsequent experiments (see below).
Acclimatization
Antibodies, Viral
Cell Lines
Cells
Cytopathogenic Effect, Viral
Erythrocytes
Genes
Immunoglobulins
Infection
Madin Darby Canine Kidney Cells
Mutation
Oligonucleotide Primers
Pellets, Drug
Recombinant Proteins
Reverse Transcriptase Polymerase Chain Reaction
RNA, Viral
RNA Viruses
Technique, Dilution
Test, Hemagglutination
Tosylphenylalanyl Chloromethyl Ketone
Trypsin
Virus
The collected data included demographic characteristics, epidemiological data (direct and indirect contact history, incubation period), clinical data, chest computed tomography (CT), SARS-CoV-2 detection information, antiviral antibody information, complications and outcomes. All data were obtained from the electronic medical record system, and no follow-up data were included in this study. Vaccination information was collected from the patients, including vaccine name, dose, and date of administration. Two-dose vaccination was defined as having received a second or third dose of vaccine at least 14 days prior; one-dose vaccination was defined as having received the first dose of the vaccine at least 21 days ago but not the second dose. Unvaccinated patients did not receive any SARS-CoV-2 vaccine. Antibodies against SARS-CoV-2 (anti-Spike IgG and IgM) were detected by laboratory tests. All data were extracted by two independent physicians, and any disputed data were resolved in consultation with a third independent physician.
anti-IgG
Antibodies
Antibodies, Viral
Chest
COVID-19 Vaccines
Patients
Physicians
SARS-CoV-2
Vaccination
Vaccines
X-Ray Computed Tomography
Top products related to «Antibodies, Viral»
Sourced in United States, Germany, Japan
The Nano-Glo Luciferase Assay System is a luminescent reporter assay for the detection and quantification of luciferase activity in cell-based assays. The system utilizes a proprietary luciferase enzyme and optimized assay reagents to generate a robust, stable luminescent signal.
Sourced in United States, United Kingdom, France, Germany, Switzerland, China
The Bright-Glo Luciferase Assay System is a laboratory equipment used to measure luciferase enzyme activity. It provides a sensitive and rapid method for detection and quantification of firefly luciferase reporter gene expression.
Sourced in United States, Japan, United Kingdom, Austria, Canada, Germany, Poland, Belgium, Lao People's Democratic Republic, China, Switzerland, Sweden, Finland, Spain, France
GraphPad Prism 7 is a data analysis and graphing software. It provides tools for data organization, curve fitting, statistical analysis, and visualization. Prism 7 supports a variety of data types and file formats, enabling users to create high-quality scientific graphs and publications.
Sourced in China, United States, Germany, United Kingdom, Canada, Japan, France, Italy, Morocco, Spain, Netherlands, Montenegro, Belgium, Portugal, Ireland, Hungary
The C57BL/6 mouse is a widely used inbred mouse strain. It is a common laboratory mouse model utilized for a variety of research applications.
Sourced in United States, United Kingdom, Canada, China, Germany, Japan, Belgium, Israel, Lao People's Democratic Republic, Italy, France, Austria, Sweden, Switzerland, Ireland, Finland
Prism 6 is a data analysis and graphing software developed by GraphPad. It provides tools for curve fitting, statistical analysis, and data visualization.
Teklad Global 2019 is a rodent diet product. It is a complete and nutritionally balanced diet formulated to meet the dietary requirements of laboratory rodents.
293T-ACE2 cells are a genetically modified cell line that stably expresses the human Angiotensin-Converting Enzyme 2 (ACE2) receptor. The ACE2 receptor is the primary entry point for the SARS-CoV-2 virus, which causes COVID-19. These cells can be used for research purposes to study virus-host interactions and to evaluate potential antiviral therapies.
Sourced in United States, Germany, China, United Kingdom, Canada, France, Japan, Switzerland, Holy See (Vatican City State), Israel
HEK293T cells are a widely used human embryonic kidney cell line. They are derived from human embryonic kidney cells transformed with sheared adenovirus 5 DNA. HEK293T cells are commonly used for a variety of applications, including gene expression, viral production, and cell-based assays.
Sourced in United States
The ArrayScan VTI HCS Reader is a high-content screening system designed for automated image acquisition and analysis. It is capable of capturing and processing images from multiwell plates for a variety of cell-based applications.
Sourced in United States
Steadylite plus luciferase reagent is a luminescent substrate solution designed for quantitative measurement of luciferase reporter gene activity in cell-based assays. The reagent provides a stable light output for extended periods, allowing for consistent and reproducible measurements.
More about "Antibodies, Viral"
Antibodies and Viral Agents: Exploring the Intersection of Immunology and Virology.
Antibodies are specialized proteins produced by the immune system to recognize and neutralize foreign substances, including viruses.
These immunoglobulins (Ig) play a crucial role in the body's defense against viral infections.
Viral agents, such as RNA or DNA viruses, are infectious particles that can hijack host cells and replicate, often causing disease.
Understanding the complex interplay between antibodies and viruses is essential for developing effective treatments, vaccines, and diagnostic tools.
The study of antibody-mediated immune responses to viral infections encompasses a wide range of research approaches and techniques.
Luciferase-based assays, such as the Nano-Glo Luciferase Assay System and Bright-Glo Luciferase Assay System, are commonly used to measure the activity and interactions of antibodies and viral agents.
These sensitive and quantitative assays can be used to evaluate the neutralizing capabilities of antibodies against viral infections.
Researchers often utilize animal models, such as C57BL/6 mice, to study the in vivo effects of antibodies on viral infections.
GraphPad Prism 7 and Prism 6 are popular data analysis software that can be employed to statistically analyze the results of these experiments.
Additionally, cell lines like 293T-ACE2 and HEK293T are commonly used to study the interactions between antibodies and viral agents in vitro.
High-throughput screening platforms, such as the ArrayScan VTI HCS Reader, can be leveraged to rapidly assess the efficacy of antibodies against viral agents.
The Steadylite plus luciferase reagent is another tool that can be used to measure the luminescent signal generated by antibody-viral interactions, providing insights into the potency and specificity of the antibody response.
By combining these research tools and techniques with the latest advancements in AI-driven platforms like PubCompare.ai, scientists can revolutionize their antibody and viral research.
PubCompare.ai empowers researchers to locate the best protocols and products, enhance reproducibility, and optimize their research processes, ultimately accelerating the development of effective treatments, vaccines, and diagnostic tools for viral diseases.
Antibodies are specialized proteins produced by the immune system to recognize and neutralize foreign substances, including viruses.
These immunoglobulins (Ig) play a crucial role in the body's defense against viral infections.
Viral agents, such as RNA or DNA viruses, are infectious particles that can hijack host cells and replicate, often causing disease.
Understanding the complex interplay between antibodies and viruses is essential for developing effective treatments, vaccines, and diagnostic tools.
The study of antibody-mediated immune responses to viral infections encompasses a wide range of research approaches and techniques.
Luciferase-based assays, such as the Nano-Glo Luciferase Assay System and Bright-Glo Luciferase Assay System, are commonly used to measure the activity and interactions of antibodies and viral agents.
These sensitive and quantitative assays can be used to evaluate the neutralizing capabilities of antibodies against viral infections.
Researchers often utilize animal models, such as C57BL/6 mice, to study the in vivo effects of antibodies on viral infections.
GraphPad Prism 7 and Prism 6 are popular data analysis software that can be employed to statistically analyze the results of these experiments.
Additionally, cell lines like 293T-ACE2 and HEK293T are commonly used to study the interactions between antibodies and viral agents in vitro.
High-throughput screening platforms, such as the ArrayScan VTI HCS Reader, can be leveraged to rapidly assess the efficacy of antibodies against viral agents.
The Steadylite plus luciferase reagent is another tool that can be used to measure the luminescent signal generated by antibody-viral interactions, providing insights into the potency and specificity of the antibody response.
By combining these research tools and techniques with the latest advancements in AI-driven platforms like PubCompare.ai, scientists can revolutionize their antibody and viral research.
PubCompare.ai empowers researchers to locate the best protocols and products, enhance reproducibility, and optimize their research processes, ultimately accelerating the development of effective treatments, vaccines, and diagnostic tools for viral diseases.