IL-6 production by retrovirus packaging cells and cultured bone marrow cells.

Abstract:

:Retrovirus integration into the host cell genome occurs most efficiently in replicating cells. In agreement with this notion, it was observed that the efficiency with which hemopoietic stem cells (HSC) can be transduced is greatly enhanced when the hemopoietic growth factor (HGF) interleukin 3 (IL-3) is added to co-cultures of bone marrow cells with retrovirus-producing cells. The HGF IL-6, which enhances the IL-3-induced formation of blast cell colonies in vitro, is also believed to improve the transduction of HSC. Because IL-6 can be produced by a number of different cell types, we investigated whether IL-6 was present in the culture supernatant of retrovirus packaging cells and bone marrow cells. We found that the six retrovirus packaging cells tested produced large amounts of IL-6. Bone marrow cells cultured with IL-1 alpha and IL-3 also make IL-6, and, following co-cultivation of both cell types, the concentration of IL-6 in the medium is even up to 10-fold higher than the sum of the concentrations obtained when both are cultured separately. Considering that IL-6 is produced in large amounts during co-cultivations, we believe that its effect on the transduction of HSC cannot be measured by adding extra growth factor to the co-culture medium.

journal_name

Hum Gene Ther

journal_title

Human gene therapy

authors

Einerhand MP,Bakx TA,Valerio D

doi

10.1089/hum.1991.2.4-301

subject

Has Abstract

pub_date

1991-01-01 00:00:00

pages

301-6

issue

4

eissn

1043-0342

issn

1557-7422

journal_volume

2

pub_type

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