Candidate genes associated with susceptibility for SARS-coronavirus.
Ying-Hen Hsieh1, Cathy W S Chen, Shu-Fang Hsu Schmitz
1Department of Public Health and Biostatistics Center, China Medical University, Taichung, Taiwan 402. hsieh@mail.cmu.edu.tw
Bulletin of Mathematical Biology
|July 11, 2009
Summary
Genetic variations influence susceptibility to severe acute respiratory syndrome coronavirus (SARS-CoV). Certain genotypes, like CXCL10(-938AA), offer protection, while others, such as Fgl2(+158T/*), increase risk, informing public health strategies.
Area of Science:
- Immunogenetics
- Epidemiology
- Computational Biology
Background:
- Individual susceptibility to SARS-CoV during the 2003 outbreak remains unclear.
- Understanding genetic factors influencing infection risk is crucial for public health.
Purpose of the Study:
- To investigate the association between specific gene polymorphisms and SARS-CoV infection susceptibility.
- To develop a novel modeling approach for identifying high-risk populations.
Main Methods:
- Utilized a compartmental disease transmission model.
- Analyzed clinical and genetic data from 100 SARS patients in Taiwan.
- Estimated infection rates for different genotype groups.
Main Results:
- CXCL10(-938AA) genotype demonstrated a protective effect against SARS-CoV infection.
- Fgl2(+158T/*) genotype was associated with increased susceptibility, unless co-occurring with CXCL10(-938AA).
- HO-1(-497A/*) was found to co-occur with protective CXCL10(-938AA).
Conclusions:
- Genetic variations significantly impact SARS-CoV susceptibility.
- The proposed modeling approach can identify at-risk groups without large case-control studies.
- Findings have implications for future infectious disease outbreak management.
Related Concept Videos
Single Nucleotide Polymorphisms-SNPs
A single nucleotide polymorphism or SNP is a single nucleotide variation at a specific genomic position in a large population. It is the most prevalent type of sequence variation found in the human genome. Point mutations that occur in more than 1% of the population qualify as SNPs. These are present once every 1000 nucleotides on an average in the human genome. Replacement of a purine with another purine (A/G) or a pyrimidine with another pyrimidine (C/T) is known as a transition. In contrast,...
Coronavirus
Coronaviruses, including the severe acute respiratory syndrome coronavirus (SARS-CoV), are enveloped viruses characterized by their single-stranded, positive-sense RNA genome and helical nucleocapsid structure. The hallmark of these viruses is their club-shaped spike (S) glycoproteins that protrude from the viral envelope, facilitating attachment to host cells. Typically, coronaviruses infect the upper respiratory tract, often causing mild or asymptomatic disease. However, certain strains like...
Genome-wide Association Studies-GWAS
Genome-wide association studies or GWAS are used to identify whether common SNPs are associated with certain diseases. Suppose specific SNPs are more frequently observed in individuals with a particular disease than those without the disease. In that case, those SNPs are said to be associated with the disease. Chi-square analysis is performed to check the probability of the allele likely to be associated with the disease.
GWAS does not require the identification of the target gene involved in...
GWAS does not require the identification of the target gene involved in...
Rous Sarcoma Virus (RSV) and Cancer
Rous Sarcoma virus or RSV was discovered by F. Peyton Rous in the year 1911 as a filterable transmissible agent that could cause tumors in chickens. He won a Nobel Prize for this discovery in 1966. His experiments clearly demonstrated that some cancers could be caused by infectious agents and led to the discovery of many more cancer-causing viruses in animals as well as humans.
RSV is a retrovirus that contains two copies of a plus-strand RNA genome. Its genome consists of four main open...
RSV is a retrovirus that contains two copies of a plus-strand RNA genome. Its genome consists of four main open...
The Ras Gene
The Ras-gene-encoded proteins are regulators of signaling pathways controlling cell proliferation, differentiation, or cell survival. The Ras-gene family in humans constitutes three primary members—the HRas, NRas, and KRas. These genes code for four functionally distinct yet closely related proteins—the HRas, NRas, KRas4A, and KRas4B. The involvement of mutant Ras genes in human cancer was first discovered in 1982 and is among the most common causes of human tumorigenesis.
Ras is a superfamily...
Ras is a superfamily...
Exon Recombination
The evolution of new genes is critical for speciation. Exon recombination, also known as exon shuffling or domain shuffling, is an important means of new gene formation. It is observed across vertebrates, invertebrates, and in some plants such as potatoes and sunflowers. During exon recombination, exons from the same or different genes recombine and produce new exon-intron combinations, which might evolve into new genes.
Exon shuffling follows “splice frame rules.” Each exon has three reading...
Exon shuffling follows “splice frame rules.” Each exon has three reading...

