Erythroleukemia cells

Nick Theodorakis nicholas_theodorakis at
Tue Sep 28 08:39:57 EST 1999

I 've also worked with K562 cells a long time ago, and had
good results with hemin (the cell pellets would actually be
red). The person we got them from claimed you had to clone
them out every now and then select out lines that responded
well to hemin; otherwise, they would lose that ability
after many passages.

Nick Theodorakis
(PS, I don't have any now, sorry! But maybe you could try
to clone from the line you have, or from a fresh vial from

In article <37F008BC.422427D4 at>, Richard Schuman
<rfschuman at> wrote:
> Luba:
> I have not worked with K562 in years, but I recall
> that all-trans retinoic
> acid was a good differentiating agent (sorry, I cannot
> remember the
> concentration) and that DMSO did not work well.  I
> have recently worked with
> similar cells and find that 0.75% dimethylformamide is
> great, with
> differentiation in 3-5 days.  Hope this helps.
> Rick Schuman
> Luba wrote:
> > Hi!
> >
> >     I have problems with the differentiation of
> erythroleukemia cells in
> > culture. I have tried to stimulate mouse Friend
> cells with DMSO and
> > human K-562 cells with hemin and butyrate detecting
> the results with
> > benzidine assay and Northern hybridization with a
> beta-globin gene probe
> > but nothing has really worked. It is possible that
> the cell lines I have
> > used have impaired capacity to differentiate. If
> somebody works with
> > cells with a proved capacity for differentiation
> please let me know if
> > he or she could kindly give me a flask of these
> cells. If this is
> > possible please let me know and we could discuss the
> details later.
> >     Thank you very much in advance.
> >
> > Lubomira Chakalova
> > Institute of Molecular Biology
> > Bulgarian Academy of Sciences
> > Acad. G. Bonchev Street, Bldg. 21
> > 1113 Sofia
> > Bulgaria

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