Deleting 7Mbp chromosomal region - (Mar/29/2014 )

Hi,

I would like to delete a 7Mbp region on one chromosome in a myeloma cell line and study the effect on immunoglobulin production. Is there a way to delete such a large region?

Thank,

Cynthia

Do you need to delete it completely or can you just disrupt the sequence to hinder production?

Either would be fine. I don't want the genes in the region to be expressed so that I could check if the region is important for a phenotype.

Literature search indicate that people have succeeded in deleting upto 10Mb using Cre-loxP system. I have succeeded in deleting 2Mb using Cre-loxP but failed at 4Mb.

So in my opinion it is possible to delete 7Mb but it will be rather difficult and definitely time consuming. 

It would be better to use CRISPR system to knock out the gene of interest. It would be faster.