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EP0122201A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Method for the detection and measurement by fluorescence of a membrane-associated protein-dependent cell endocytosis

Assignee: Centre National de la Recherche Scientifique
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Filing: 1984-04-06
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Granted: —
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Expires: 2004-04-06
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Abstract

Abstract Translated from French Procédé de détection et de mesure d'une endocytose cellulaire à la faveur d'une mise en contact avec un ligand déterminé des cellules à étudier, qui comprend la mise en contact de ces cellules et de ce ligand avec des liposomes modifiés par couplage covalent à une molécule elle-même apte à se fixer sur ledit ligand et retenant par encapsulation une solution d'un fluorochrome, caractérisé en ce que la concentration en fluorochrome de la solution encapsulée est initialement suffisamment élevée pour que soit assurée une auto-extinction de sa fluorescence et en ce que l'on mesure ensuite la suppression au moins partielle de l'auto-extinction de la fluorescence qui résulte de l'internalisation desdits liposomes modifiés. Method for detecting and measuring cellular endocytosis by contacting a determined ligand of the cells to be studied, which comprises contacting these cells and this ligand with liposomes modified by covalent coupling to a molecule itself capable of binding to said ligand and retaining by encapsulation a solution of a fluorochrome, characterized in that the concentration of fluorochrome in the encapsulated solution is initially sufficiently high for self-extinction of its fluorescence to be ensured and in that the at least partial suppression of the self-extinction of the fluorescence which results from the internalization of said modified liposomes is then measured.

Inventors

  • 👤 Lee Daniel Leserman
  • 👤 Alemseged Truneh
  • 👤 Jacques Barbet
  • 👤 Patrick Machy

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-24 00:51
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/53; G01N33/543; G01N33/54313; G01N33/5432; G01N33/569; G01N33/56966; G01N33/58; G01N33/585; G01N33/586

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