Prevention of Staphylococcus aureus infections: advances in vaccine development

Henry R Shinefield1, Steven Black

  • 1University of California School of Medicine, San Francisco, CA 94109, USA. Henryshinefield@aol.com

Expert Review of Vaccines
|October 14, 2005
PubMed

Insights

Preventing Staphylococcus aureus (S. aureus) infections is crucial due to rising antibiotic resistance. This review examines S. aureus virulence factors and vaccine development, including a Phase III trial for a capsular polysaccharide vaccine.

Area of Science:

  • Microbiology
  • Immunology
  • Infectious Diseases

Background:

  • Staphylococcus aureus is a common bacterium causing severe infections, especially in hospitals.
  • Antibiotic-resistant strains of S. aureus are a growing public health concern.
  • Developing effective treatments is challenging due to S. aureus's multiple virulence factors.

Purpose of the Study:

  • To review S. aureus virulence factors and strategies for disease prevention.
  • To discuss the development of vaccines and drugs targeting S. aureus.
  • To present findings from a Phase III clinical study of a specific S. aureus vaccine.

Main Methods:

  • Literature review of S. aureus virulence factors.
  • Analysis of vaccine and drug development approaches.
  • Discussion of a Phase III clinical trial for a vaccine targeting capsular polysaccharides types 5 and 8.

Main Results:

  • S. aureus possesses diverse virulence factors complicating vaccine design.
  • Vaccine development efforts are ongoing, targeting various factors.
  • A Phase III study evaluated a vaccine against S. aureus capsular polysaccharides, with results discussed.

Conclusions:

  • Preventing S. aureus infections is paramount due to treatment challenges and resistance.
  • Targeting specific virulence factors offers potential for novel therapies.
  • Further research and clinical evaluation are needed for effective S. aureus vaccines.

Related Concept Videos

Microorganisms in Medicine and Therapeutics01:29

Microorganisms in Medicine and Therapeutics

Microorganisms play a fundamental role in vaccine development, gene therapy, and therapeutic production. Their biological properties are harnessed to advance medicine and public health. Beyond immunization, microorganisms contribute to gut health, antibiotic synthesis, and genetic disease treatment.Live Attenuated and Inactivated VaccinesLive attenuated vaccines, such as the measles, mumps, and rubella (MMR) vaccine, utilize weakened forms of pathogens to closely resemble natural infections.
Vaccine Production01:23

Vaccine Production

Vaccine production involves a sequence of upstream and downstream processes to generate a safe and effective immunological product. It begins with cultivating microorganisms, such as viruses or bacteria, to obtain antigenic material. For viral vaccines, mammalian host cells are grown in bioreactors and subsequently infected with the target virus. The virus replicates within the host cells, which are lysed to release viral particles. This lysate is then clarified through filtration or...
Staphylococcal Skin Infections01:29

Staphylococcal Skin Infections

Staphylococcus aureus is a Gram-positive coccus that resides harmlessly on the skin and mucous membranes of healthy individuals. When the skin barrier is breached, it can shift from a commensal to an opportunistic pathogen. This transition is facilitated by surface adhesins, such as clumping factor B and S. aureus surface protein G (SasG), which bind to structural proteins, including loricrin and cytokeratin, in the damaged epidermis. Protein A, another key factor, binds the Fc region of...
Clinical Significance of Antibiotic Resistance01:25

Clinical Significance of Antibiotic Resistance

Methicillin-resistant Staphylococcus aureus (MRSA) presents a critical public health threat, arising from its capacity to resist β-lactam antibiotics due to acquisition of the mecA gene within the staphylococcal cassette chromosome mec (SCCmec). This gene encodes penicillin-binding protein 2a (PBP2a), which impairs binding efficacy of methicillin and other β-lactams. MRSA has evolved into distinct clonal lineages impacting humans and animals alike, reinforcing its significance within the One...
Cancer Vaccines01:30

Cancer Vaccines

Cancer treatment vaccines are a rapidly evolving field that offers a promising approach to immunotherapy. Unlike traditional vaccines that prevent diseases, cancer treatment vaccines are designed to treat existing cancers by stimulating the immune system to recognize and attack cancer cells.
Cancer vaccines come in two categories: preventive (prophylactic) and treatment (active). Preventive vaccines, such as the Human Papillomavirus (HPV) vaccine, protect against viruses that cause certain...
Healthcare Associated Infections II: Preventive Measures01:22

Healthcare Associated Infections II: Preventive Measures

Essential infection prevention measures are based on the knowledge of the infection chain, the modes of transmission in healthcare settings, and the use of the best practices in all healthcare settings. Compulsory public reporting of healthcare-associated infection rates is needed to allow individuals and the community to make informed choices regarding selecting a healthcare facility.
The best practices for preventing healthcare-associated infections include hand hygiene, patient risk...