On Saturday, October 2, we organized a “Visite Insolite” with the CNRS, for the “Fête de la Science” 30th anniversary. To offer a fun discovery of organoids, we mobilized around ten members from the Epigenetics and Cell Fate unit and the Jaques Monod Institute.

“Visite Insolite” on Saturday, October 2.

The first group of participants together with the organizers of the “Organoids: mini-organs that grow in the lab” visit.

© Valérie Drouet, Labex Who Am I?

One visit, two groups and three workshops

The visit started with a short introduction given by Claire Rougeulle (coordinator of Labex Who Am I?, and deputy director of the Epigenetics and Cell Fate unit) on the concepts of stem cells, organoids and the CRISPR technology, recently awarded of a Nobel Prize.

 
 
 

Then, the visitors left to discover the laboratories and equipment used by the researchers to study organoids.

A first workshop was dedicated to the visit of a level 2 laboratory, and the discovery of stem cells. Léo Carrillo (Ph.D. student in the Epigenetics and Cell Fate unit) invited the participants to put on the required attire, a gown, and gloves, before entering the laboratory. Léo presented the different pieces of equipment: incubators, laminar flow cabinets, microscopes, etc., and materials necessary for the culture of stem cells before performing a demonstration of changing the nutritional medium for these cells. Then, he accompanied the participants in observing these stem cells under a microscope and in a practical workshop: changing the cell culture medium themselves!

     
 
 
For the second workshop, Kamal Bouhali (Research Engineer, enSCORE platform) and Mikaëlle Bocel (Research Engineer, enSCORE platform) guided our visitors to observe organoids at different stages of evolution. Using salt dough models and couscous or bulgur seeds, the participants followed the development of pseudo-neural organoids over time. Then, the team challenged them, objective: transfer the organoids, change the medium, and encapsulate them in a Matrigel matrix. Not easy!
 
 
 
Finally, the third workshop was devoted to the observation of organoid sections under a fluorescence microscope. Kévin Daupin (Ph.D. student in the Epigenetics and Cellular Destiny Unit), Jad Saleh, and Matis Soleilhac (Ph.D. students at the Jacques Monod Institute) started by briefly explaining the concepts of immunofluorescence and microscopy. Then, they guided the participants through the multicolored observations of immunostained neural and intestinal organoids. All were amazed!
 
 
 
 
Big thanks to all the participants and organizers for this pleasant day of discussions!

 

To find out more, discover other articles related to the “Visites Insolites” of the CNRS:

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