The Molecular Anatomy of Human Hsp60 and its Similarity with that of Bacterial Orthologs and Acetylcholine Receptor Reveal a Potential Pathogenetic Role of Anti-Chaperonin Immunity in Myasthenia Gravis.

Fabio Bucchieri, Francesco Cappello, Giovanni Zummo, Arcangelo Benigno, Antonella Marino Gammazza, Antonella Marino Gammazza, Fabio Bucchieri, Francesco Cappello, Luigi M.E. Grimaldi, Everly Conway De Macario, Alberto J.L. Macario

Risultato della ricerca: Articlepeer review

25 Citazioni (Scopus)

Abstract

Heat-shock protein 60 (Hsp60) is ubiquitous and highly conserved being present in eukaryotes and prokaryotes, including pathogens. This chaperonin, although typically a mitochondrial protein, can also be found in other intracellular sites, extracellularly, and in circulation. Thus, it can signal the immune system and participate in the development of inflammation and immune reactions. Both phenomena can be elicited by human and foreign Hsp60 (e.g., bacterial GroEL), when released into the blood by infectious agents. Consequently, all these Hsp60 proteins become part of a complex autoimmune response characterized by multiple cross reactions because of their structural similarities. In this study, we demonstrate that Hsp60 proteins from humans and two common pathogens, Chlamydia trachomatis and Chlamydia pneumoniae, share various sequence segments of potentially highly immunogenic epitopes with acetylcholine receptor α1 subunit (AChRα1). The structural data indicate that AChRα1 antibodies, implicated in the pathogenesis of myasthenia gravis, could very well be elicited and/or maintained by self- and/or bacterial Hsp60.
Lingua originaleEnglish
pagine (da-a)943-947
Numero di pagine5
RivistaCellular and Molecular Neurobiology
Volume32(6)
Stato di pubblicazionePublished - 2012

All Science Journal Classification (ASJC) codes

  • Cellular and Molecular Neuroscience
  • Cell Biology

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