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Microinjection of cells into the lumen of spheroids ?

microinjection collagen gel spheroid lumen

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#1 Tabaluga

Tabaluga

    Making glass out of shards

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Posted 21 September 2015 - 12:47 PM

Hi folks,

I have been trying to inject cells into the internal lumen of spheroids growing in a collagen gel using an oocyte microinjector and very thin glass pipets. However, whenever I try to poke the spheroids, they (and the surrounding collagen) dogde away from the pipet tip. There seems to be no way for holding them in place, consequently, the tip does not really penetrate them and the cells are delivered at the outside of the spheroid, not into its lumen. I cannot change the collagen gel density since this recipe has been established for them and other percentages of collagen etc. would change their growth conditions.

 

Do you have any ideas ?

 

Thanks in advance !


Il dort. Quoique le sort fût pour lui bien étrange,
Il vivait. Il mourut quand il n'eut plus son ange;
La chose simplement d'elle-même arriva,
Comme la nuit se fait lorsque le jour s'en va.

 


#2 bob1

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Posted 21 September 2015 - 01:39 PM

Could you patch-clamp the cells to keep the spheriod in place?







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