Hybrid molecules for optically detecting changes in cellular...

C - Chemistry – Metallurgy – 12 – N

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C12N 15/62 (2006.01) A01K 67/027 (2006.01) C07K 14/435 (2006.01) C07K 14/47 (2006.01) C07K 14/705 (2006.01) C12N 5/10 (2006.01) C12N 9/02 (2006.01) C12N 15/00 (2006.01) C12N 15/85 (2006.01) G01N 33/50 (2006.01)

Patent

CA 2281648

The invention relates to methods and compositions which utilize the emission of light to monitor changes in microenvironments involving cells. The invention is especially useful for monitoring exocytotic activity such as detecting quantal release of synaptic vesicles. Fusion proteins of Cypridina luciferase and synaptotagmin-I or VAMP/synaptobrevin-2 were targeted to synaptic vesicles and, upon exocytosis, formed light-emitting complexes with luciferin present in the extracellular medium. Photon emissions in the presence of a depolarizing stimulus can be observed with these systems. pH- sensitive mutants of green fluorescent protein are also provided, which are useful for visualizing exocytosis and for imaging and measuring the pH of intracellular compartments.

L'invention concerne des procédés et des compositions dans lesquels on utilise l'émission de lumière pour déceler les modifications des micro-environnements cellulaires. Les procédés et compositions de l'invention sont particulièrement utiles pour contrôler l'activité d'exocytose, par exemple détecter la libération tout ou rien des vésicules synaptiques. On a dirigé des vésicules synaptiques, des protéines de fusion de luciférase Cypridina et de synaptotagmine-I ou de VAMP/synaptobrévine-2 puis, lors de l'exocytose, elles ont formé des complexes lumineux avec la luciférine présente dans le milieu extracellulaire. Il est possible d'observer dans ces systèmes une émission de photons en présence d'un stimulus de dépolarisation. L'invention concerne également des mutants de protéine fluorescente verte sensibles au pH, qui sont utiles pour la visualisation de l'exocytose ainsi que pour l'imagerie et la mesure du pH des compartiments intracellulaires.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Hybrid molecules for optically detecting changes in cellular... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hybrid molecules for optically detecting changes in cellular..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hybrid molecules for optically detecting changes in cellular... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1750465

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.