Abstrakti
Ganglioside GM3 in the plasma membranes suppresses cell growth by preventing the autophosphorylation of the epidermal growth factor receptor (EGFR). Biological studies have suggested that GM3 interacts with the transmembrane segment of EGFR. Further biophysical experiments are particularly important for quantitative evaluation of the peptide-glycolipid interplay in bilayer membranes using a simple reconstituted system. To examine these interactions in this way, we synthesized the transmembrane segment of EGFR bearing a nitrobenzoxadiazole fluorophore (NBD-TM) at the N-terminus. The affinity between EGFR and GM3 was evaluated based on Förster resonance energy transfer (FRET) between NBD-TM and ATTO594-labeled GM3 in bilayers where their non-specific interaction due to lateral proximity was subtracted by using NBD-labeled phospholipid. This method for selectively detecting the specific lipid-peptide interactions in model lipid bilayers disclosed that the lateral interaction between GM3 and the transmembrane segment of EGFR plays a certain role in disturbing the formation of active EGFR dimers.
| Alkuperäiskieli | Englanti |
|---|---|
| Artikkeli | 183623 |
| Julkaisu | Biochimica et Biophysica Acta - Biomembranes |
| Vuosikerta | 1863 |
| Numero | 8 |
| DOI - pysyväislinkit | |
| Tila | Julkaistu - 1 elok. 2021 |
| OKM-julkaisutyyppi | A1 Julkaistu artikkeli, soviteltu |
Rahoitus
This work was partially supported by KAKENHI Grant Numbers, JP16H06315 (M. M.) JP17H06406 (M. M.) and JP19K05713 (S. H.) from Japan Society for the Promotion of Science (JSPS) and CREST Grant Number JPMJCR18H2 (S.H. and H.A.) from Japan Science and Technology Agency (JST). We thank Prof. Kenichi GN Suzuki (Gifu University) for helpful discussions. M.N. thanks Tobitate! (Leap for Tomorrow) Young Ambassador Program from MEXT, Japan for a financial support to study abroad in the Slotte group.
Sormenjälki
Sukella tutkimusaiheisiin 'FRET detects lateral interaction between transmembrane domain of EGF receptor and ganglioside GM3 in lipid bilayers'. Ne muodostavat yhdessä ainutlaatuisen sormenjäljen.Viittausmuodot
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