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Search: WFRF:(Bratanis Eleni) > (2023) > A human monoclonal ...

A human monoclonal antibody bivalently binding two different epitopes in streptococcal M protein mediates immune function

Bahnan, Wael (author)
Lund University,Lunds universitet,Infektionsmedicin,Sektion III,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Kvantitativ immunbiologi,Forskargrupper vid Lunds universitet,epIgG,Infection Medicine (BMC),Section III,Department of Clinical Sciences, Lund,Faculty of Medicine,Quantitative immunobiology,Lund University Research Groups
Happonen, Lotta (author)
Lund University,Lunds universitet,Infektionsmedicin,Sektion III,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Molekylär patogenes,Forskargrupper vid Lunds universitet,BioMS,Infection Medicine (BMC),Section III,Department of Clinical Sciences, Lund,Faculty of Medicine,Molecular Pathogenesis,Lund University Research Groups
Khakzad, Hamed (author)
Institut National de la Santéet de la Recherche,École normale supérieure Paris-Saclay
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Kumra Ahnlide, Vibha (author)
Lund University,Lunds universitet,Infektionsmedicin,Sektion III,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Kvantitativ immunbiologi,Forskargrupper vid Lunds universitet,epIgG,Infection Medicine (BMC),Section III,Department of Clinical Sciences, Lund,Faculty of Medicine,Quantitative immunobiology,Lund University Research Groups
de Neergaard, Therese (author)
Lund University,Lunds universitet,Infektionsmedicin,Sektion III,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Kvantitativ immunbiologi,Forskargrupper vid Lunds universitet,Infection Medicine (BMC),Section III,Department of Clinical Sciences, Lund,Faculty of Medicine,Quantitative immunobiology,Lund University Research Groups
Wrighton, Sebastian (author)
Lund University,Lunds universitet,Infektionsmedicin,Sektion III,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Kvantitativ immunbiologi,Forskargrupper vid Lunds universitet,epIgG,Infection Medicine (BMC),Section III,Department of Clinical Sciences, Lund,Faculty of Medicine,Quantitative immunobiology,Lund University Research Groups
André, Oscar (author)
Lund University,Lunds universitet,Infektionsmedicin,Sektion III,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Kvantitativ immunbiologi,Forskargrupper vid Lunds universitet,Infection Medicine (BMC),Section III,Department of Clinical Sciences, Lund,Faculty of Medicine,Quantitative immunobiology,Lund University Research Groups
Bratanis, Eleni (author)
Lund University,Lunds universitet,Infektionsmedicin,Sektion III,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Immunmodulerande effekter av blodplättar vid inflammation och infektion,Forskargrupper vid Lunds universitet,epIgG,Infection Medicine (BMC),Section III,Department of Clinical Sciences, Lund,Faculty of Medicine,Immunomodulatory effects of platelets during inflammation and infection,Lund University Research Groups
Tang, Di (author)
Lund University,Lunds universitet,Infektionsmedicin,Sektion III,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Infection Medicine Proteomics,Forskargrupper vid Lunds universitet,Infection Medicine (BMC),Section III,Department of Clinical Sciences, Lund,Faculty of Medicine,Lund University Research Groups
Hellmark, Thomas (author)
Lund University,Lunds universitet,Njurmedicin,Sektion II,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Autoimmunitet och njursjukdomar,Forskargrupper vid Lunds universitet,Nephrology,Section II,Department of Clinical Sciences, Lund,Faculty of Medicine,Autoimmunity and kidney diseases,Lund University Research Groups
Björck, Lars (author)
Lund University,Lunds universitet,Infektionsmedicin,Sektion III,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Molekylär patogenes,Forskargrupper vid Lunds universitet,epIgG,Infection Medicine (BMC),Section III,Department of Clinical Sciences, Lund,Faculty of Medicine,Molecular Pathogenesis,Lund University Research Groups
Shannon, Oonagh (author)
Lund University,Lunds universitet,Infektionsmedicin,Sektion III,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Immunmodulerande effekter av blodplättar vid inflammation och infektion,Forskargrupper vid Lunds universitet,SEBRA Sepsis and Bacterial Resistance Alliance,epIgG,Infection Medicine (BMC),Section III,Department of Clinical Sciences, Lund,Faculty of Medicine,Immunomodulatory effects of platelets during inflammation and infection,Lund University Research Groups
Malmström, Lars (author)
Lund University,Lunds universitet,Infektionsmedicin,Sektion III,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,epIgG,Forskargrupper vid Lunds universitet,Infection Medicine (BMC),Section III,Department of Clinical Sciences, Lund,Faculty of Medicine,Lund University Research Groups
Malmström, Johan (author)
Lund University,Lunds universitet,Infektionsmedicin,Sektion III,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Infection Medicine Proteomics,Forskargrupper vid Lunds universitet,SEBRA Sepsis and Bacterial Resistance Alliance,epIgG,Masspektrometri,Sektion V,Institutionen för kliniska vetenskaper, Lund,BioMS,Infection Medicine (BMC),Section III,Department of Clinical Sciences, Lund,Faculty of Medicine,Lund University Research Groups,Mass Spectrometry,Section V,Department of Clinical Sciences, Lund
Nordenfelt, Pontus (author)
Lund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Infektionsmedicin,Sektion III,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Kvantitativ immunbiologi,Forskargrupper vid Lunds universitet,SEBRA Sepsis and Bacterial Resistance Alliance,epIgG,Other operations, LTH,Faculty of Engineering, LTH,Infection Medicine (BMC),Section III,Department of Clinical Sciences, Lund,Faculty of Medicine,Quantitative immunobiology,Lund University Research Groups
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 (creator_code:org_t)
2022-12-12
2023
English.
In: EMBO Molecular Medicine. - : EMBO. - 1757-4684 .- 1757-4676. ; 15:2, s. 1-21
Related links:
http://dx.doi.org/10... (free)
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https://lup.lub.lu.s...
https://doi.org/10.1...
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • Group A streptococci have evolved multiple strategies to evade human antibodies, making it challenging to create effective vaccines or antibody treatments. Here, we have generated antibodies derived from the memory B cells of an individual who had successfully cleared a group A streptococcal infection. The antibodies bind with high affinity in the central region of the surface-bound M protein. Such antibodies are typically non-opsonic. However, one antibody could effectively promote vital immune functions, including phagocytosis and in vivo protection. Remarkably, this antibody primarily interacts through a bivalent dual-Fab cis mode, where the Fabs bind to two distinct epitopes in the M protein. The dual-Fab cis-binding phenomenon is conserved across different groups of M types. In contrast, other antibodies binding with normal single-Fab mode to the same region cannot bypass the M protein's virulent effects. A broadly binding, protective monoclonal antibody could be a candidate for anti-streptococcal therapy. Our findings highlight the concept of dual-Fab cis binding as a means to access conserved, and normally non-opsonic regions, regions for protective antibody targeting.

Subject headings

MEDICIN OCH HÄLSOVETENSKAP  -- Medicinska och farmaceutiska grundvetenskaper -- Immunologi inom det medicinska området (hsv//swe)
MEDICAL AND HEALTH SCIENCES  -- Basic Medicine -- Immunology in the medical area (hsv//eng)
MEDICIN OCH HÄLSOVETENSKAP  -- Klinisk medicin -- Infektionsmedicin (hsv//swe)
MEDICAL AND HEALTH SCIENCES  -- Clinical Medicine -- Infectious Medicine (hsv//eng)

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