Publications by authors named "Steven Ionov"

Article Synopsis
  • Recent research has advanced our understanding of SARS-CoV-2 and antibody responses, but the detailed composition of circulating antibodies remains largely unexplored.
  • A study using Ig-Seq analyzed the antibody profiles specific to SARS-CoV-2's spike protein and its receptor binding domain in four subjects over six months after infection, revealing that about 50% of RBD-specific IgG did not recognize the spike protein in its stabilized form.
  • The study also evaluated monoclonal antibodies from infected individuals, finding that while some neutralized the virus, others showed limited binding to different variants, highlighting the complexities of the immune response to SARS-CoV-2.
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Immunoproteomics has emerged as a versatile tool for analyzing the antibody repertoire in various disease contexts. Until recently, characterization of antibody molecules in biological fluids was limited to bulk serology, which identifies clinically relevant features of polyclonal antibody responses. The past decade, however, has seen the rise of mass-spectrometry-enabled proteomics methods that have allowed profiling of the antibody response at the molecular level, with the disease-specific serological repertoire elucidated in unprecedented detail.

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Background: Adenosine triphosphate (ATP) is the main energy carrier in living organisms, critical for metabolism and essential physiological processes. In humans, abnormal regulation of energy levels (ATP concentration) and power consumption (ATP consumption flux) in cells is associated with numerous diseases from cancer, to viral infection and immune dysfunction, while in microbes it influences their responses to drugs and other stresses. The measurement and modeling of ATP dynamics in cells is therefore a critical component in understanding fundamental physiology and its role in pathology.

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