The present invention relates to the field of cell-based therapeutics. Specifically, the invention is concerned with a composition comprising a macrophage overexpressing interleukin 10 (IL-10) from transfected IL-10 encoding mRNA for use as a medicament. Moreover, a method for manufacturing a medicament for treating and/or preventing inflammation or a disease or disorder associated therewith comprising the steps of obtaining a macrophage from a sample of said subject, transfecting mRNA encoding IL-10 into said macrophage, and formulating said macrophage in a composition suitable for administration to the said subject, whereby the medicament is manufactured. Finally, a kit is provided for manufacturing such a medicament.