Relationship between cell adherence and proteoglycan synthesis in cultures of human peripheral blood mononuclear cells: effects of concanavalin A.

✍ Scribed by T.P. Anastassiades; R.K. Chopra; P.M. Ford; A. Wood

• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 450 KB
• Volume: 17
• Category: Article
• ISSN: 1065-6995
• DOI: 10.1006/cbir.1993.1091

✦ Synopsis

Abstract

Human, blood‐derived mononuclear cells (MC), stimulated with Concanavalin A (Con A), synthesized a chondroitin sulfate (CS) proteoglycan (PG), which was elaborated largely by T‐cells. Following Con A stimulation, the majority of MC adhered to the culture dish by day 2; but as incubation progressed to day 10 the proportion of non‐adherent (NAd) MC increased in a fashion which approximately paralleled the accumulation of PG in the medium. Cell kinetic studies suggest that, following Con A stimulation, there was an inverse relationship between the amount of newly synthesized cellular PG and adherence, which appears to be related to a reciprocal effect on PG synthesis of the declining adherent (Ad) cell density with time of culture. In the stimulated cultures, NAd cells contained much more newly synthesized CS/cell than Ad cells up to day 6 of incubation. Cell type analysis, using monoclonal antibodies against specific cell surface markers, suggested that the higher PG synthesis in the NAd population may, at least in part, be due to a greater proportion of T‐helper cells.