Tubular structures in heterogeneous membranes induced by the cell penetrating peptide penetratin. - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Communicative and Integrative Biology Année : 2009

Tubular structures in heterogeneous membranes induced by the cell penetrating peptide penetratin.

Résumé

The delivery of active molecules into cells requires the efficient translocation of the plasma membrane barrier. Penetratin is a promising cell penetrating peptide is which crosses the cell membrane by a receptor and metabolic energy-independent mechanism. In previous work, we have shown that basic peptides induce membrane invaginations (i.e., tubes formation by induction of negative curvature of membranes) suggesting a new mechanism for cellular uptake of cell penetrating peptides: "physical endocytosis". These effects on membrane curvature are favored in pure liquid disordered but not in pure liquid ordered (raft-like) membrane domains. Herein, we present experiments in heterogeneous membranes composed of mixed domains. The results show that Penetratin is able to induce invaginations in membranes in which liquid ordered and liquid disordered membranes coexist. We suggest that Penetratin is able to recruit specific lipids locally forming fluid membrane patches dispersed inside a liquid ordered membrane zone resulting in the invagination of tubes composed of heterogeneous membrane domains.

Domaines

Chimie organique
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Dates et versions

hal-00639220 , version 1 (08-11-2011)

Identifiants

  • HAL Id : hal-00639220 , version 1
  • PUBMED : 19641736

Citer

Antonin Lamazière, Gérard Chassaing, Germain Trugnan, Jesus Ayala-Sanmartin. Tubular structures in heterogeneous membranes induced by the cell penetrating peptide penetratin.. Communicative and Integrative Biology, 2009, 2: ((3)), pp.223-4. ⟨hal-00639220⟩
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