Draft Genome Sequences of Two Streptococcus pneumoniae Strains Causing Invasive Infections in Children in Qatar

Clement K M Tsui1,2, Sathyavathi Sundararaju3, Hassan Al Mana3

  • 1Department of Pathology, Sidra Medicine, Doha, Qatar ktsui@sidra.org.

Insights

We sequenced the genomes of two invasive Streptococcus pneumoniae strains causing severe childhood infections in Qatar. This provides insights into the genetic makeup of these dangerous pediatric pathogens.

Area of Science:

  • Microbiology
  • Genomics
  • Pediatrics

Background:

  • Invasive pneumococcal infections pose a significant threat to children globally.
  • Streptococcus pneumoniae is a leading cause of pediatric morbidity and mortality.
  • Understanding the genomic characteristics of clinical isolates is crucial for public health.

Purpose of the Study:

  • To perform draft genome sequencing of two clinical Streptococcus pneumoniae isolates.
  • To analyze the genomic features of strains causing severe pediatric infections in Qatar.
  • To identify predicted strain types and serotypes.

Main Methods:

  • Whole-genome sequencing of two clinical Streptococcus pneumoniae isolates.
  • Bioinformatic analysis for genome assembly and annotation.
  • In silico prediction of serotypes and strain types.

Main Results:

  • The draft genomes of two clinical Streptococcus pneumoniae isolates were successfully generated.
  • Genome statistics, including size and gene content, were determined.
  • Specific serotypes and strain types were predicted for the analyzed isolates.

Conclusions:

  • The genomic data provide a foundation for understanding the genetic basis of severe pneumococcal infections in children in Qatar.
  • This information can aid in surveillance and the development of targeted interventions.
  • Further research can build upon these draft genomes to explore virulence factors and antimicrobial resistance.

Related Concept Videos

Genomics02:02

Genomics

Genomics is the science of genomes: it is the study of all the genetic material of an organism. In humans, the genome consists of information carried in 23 pairs of chromosomes in the nucleus, as well as mitochondrial DNA. In genomics, both coding and non-coding DNA is sequenced and analyzed. Genomics allows a better understanding of all living things, their evolution, and their diversity. It has a myriad of uses: for example, to build phylogenetic trees, to improve productivity and...
39.8K
Genomic Imprinting and Inheritance02:30

Genomic Imprinting and Inheritance

Diploid organisms inherit genetic material through chromosomes from both parents. Copies of the same gene are known as alleles. In most cases, both alleles are simultaneously expressed and allow various cellular processes to function optimally. If one of the alleles is missing or mutated, the expression of the other allele can compensate; however, this is not true for all genes.
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
36.9K
Pneumonia I: Introduction01:30

Pneumonia I: Introduction

Pneumonia is an acute respiratory infection that targets the lungs, specifically the alveoli. These tiny air sacs, essential for oxygen exchange, become engorged with pus and fluid, severely hindering breathing, decreasing oxygen absorption, and causing significant pain and discomfort during respiration.
Risk Factors
Various factors influence the likelihood of developing pneumonia. Age plays a crucial role, with infants, children under two, and individuals over 65 at increased risk due to their...
788
Pneumonia II: Pathophysiology01:29

Pneumonia II: Pathophysiology

The pathophysiology of pneumonia involves the following steps:
2.7K
Genome Size and the Evolution of New Genes03:21

Genome Size and the Evolution of New Genes

While every living organism has a genome of some kind (be it RNA, or DNA), there is considerable variation in the sizes of these blueprints. One major factor that impacts genome size is whether the organism is prokaryotic or eukaryotic. In prokaryotes, the genome contains little to no non-coding sequence, such that genes are tightly clustered in groups or operons sequentially along the chromosome. Conversely, the genes in eukaryotes are punctuated by long stretches of non-coding sequence.
9.0K
Cis-regulatory Sequences02:02

Cis-regulatory Sequences

Cis-regulatory sequences are short fragments of non-coding DNA that are present on the same chromosomes as the genes that they regulate. These fragments serve as binding sites for transcriptional regulators, proteins that are responsible for controlling gene transcription and differential gene expression across cell types in eukaryotes. Cis-regulatory sequences can be close to the gene of interest or thousands of bases away in the DNA sequence; however, those sequences that are further away are...
11.6K