Skip to main content
News Schmidt 01.2021
Paul Albert König (left) and Florian Ingo Schmidt (right)
© Volker Lannert / Uni Bonn

News categories: Publication

New promising antibodies against SARS-CoV-2

ImmunoSensation2 member Florian I. Schmidt together with Paul-Albert König, head of the Nanobody Core Facility and an international team have identified and further developed novel antibody fragments against the SARS coronavirus-2.

These "nanobodies" are much smaller than the classic antibodies used to treat SARS-CoV-2 infections, for example. They therefore penetrate the tissue better and can be produced more easily in larger quantities. The researchers at the University Hospital Bonn have also combined the nanobodies into potentially particularly effective molecules. These attack different parts of the virus simultaneously. The approach could prevent the pathogen from evading the active agent through mutations. The results are published in the journal Science.

"We focus on another group of molecules, the nanobodies," explains Dr. Florian Schmidt, who heads an Emmy Noether group on this promising new field of research at the University of Bonn's Institute of Innate Immunity. "Nanobodies are antibody fragments that are so simple that they can be produced by bacteria or yeast, which is less expensive."

The researchers also exploit another major advantage of nanobodies over antibodies: Their simple structure allows straight forward combinations to form molecules that can be several hundred times more effective. "We have fused two nanobodies that target different parts of the spike protein," explains König. "This variant was highly effective in cell culture. Furthermore, we were able to show that this drastically reduces the probability of the virus to become resistant to the active agent through escape mutations." The researchers are convinced that the molecules may be developed into a novel and promising therapeutic option.

Dioscure Therapeutics, a spin-off of the University of Bonn, will test the nanobodies in clinical studies. The success of the project is mainly based on the excellent cooperation of the participating research groups at the University with national and international cooperation partners, emphasizes Florian Schmidt.


Publication

Paul-Albert König, Hrishikesh Das, Hejun Liu, Beate M. Kümmerer, Florian N. Gohr, Lea-Marie Jenster, Yonas M. Tesfamariam, Lisa D.J. Schiffelers, Miki Uchima, Jennifer D. Wuerth, Karl Gatterdam, Natalia Ruetalo, Maria H. Christensen, Caroline I. Fandrey, Sabine Normann, Steffen Pritzl, Jan M. P. Tödtmann, Leo Hanke, Jannik Boos, Meng Yuan, Xueyong Zhu, Jonathan Leo Schmid-Burgk, Hiroki Kato, Michael Schindler, Ian A. Wilson, Matthias Geyer, Kerstin U. Ludwig, B. Martin Hällberg, Nicholas C. Wu and Florian I. Schmidt: Structure-guided multivalent nanobodies block SARS-CoV-2 infection and suppress mutational escape. Science; DOI: 10.1126/science.abe6230


Contact

Dr. Florian I. Schmidt

Institute of Innate Immunity

University Hospital Bonn

University of Bonn

Email: fschmidt@uni-bonn.de

Phone office: +49-228/287-51124

Phone lab: +49-228/287-54708

Cell: +49-176/70021810

Related news

Kathrin Leppek Publication PM

News categories: Publication

Starting points for the control of protein synthesis

Bonn researchers develop a versatile toolbox for the characterization of IRESes in cells.
View entry
Pandyra Publication Graphical Abstract

News categories: Publication

Genetic mutation affects survival after viral infection

Scientists discovered that haploinsufficiency in the Pax5 gene affects antiviral responses. The study was led by Prof. Dr. Aleksandra Pandyra from the Institute of Clinical Chemistry and Clinical Pharmacology at the University Hospital Bonn in collaboration with Prof. Dr. Arndt Borkhardt, Clinic Director at the Pediatric Oncology at the University Hospital Düsseldorf. The findings were published in the latest edition of EMBO Molecular Medicine.
View entry
AG Kürthen Multiple Sclerosis Bonn

News categories: Publication

Potential target for MS therapy discovered

Multiple sclerosis (MS) is a chronic inflammatory disease of the central nervous system caused by the immune system. B cells, which are a type of white blood cell, play a role in the development of MS and are thus a target for therapies. Researchers at the University Hospital Bonn (UKB), the University of Bonn and the FAU Erlangen-Nuremberg identified the membrane protein MLC1 as a potential target antigen in MS. The results of the work have now been published in the renowned journal “Neurology Neuroimmunology & Neuroinflammation”.
View entry

Back to the news overview