The AfCS is utilizing antisense technology to manipulate signaling protein expression in the RAW 264.7 macrophage-like cell line. This can be achieved by the transfection of gene-specific antisense oligonucleotides (ASOs). The following procedure involves the transfection of ASOs into RAW 264.7 cells using FuGENE 6 transfection reagent. Subsequently, the isolated total RNA or protein from these transfected cells can be used to assess the level of mRNA or protein knockdown,
respectively. - [Read Antisense Oligonucleotide Transfection of RAW 264.7 Cells with FuGENE 6 in a 24-Well Dish]
Mononuclear phagocyte progenitor cells derived from femoral and tibial bone marrow are propagated in the presence of M-CSF. This macrophage growth factor is secreted by L929 cells and is used in the form of L929 cell conditioned medium. The progenitor cells proliferate and differentiate through monoblast, promonocyte and monocyte stages before maturing to macrophages. At this time the cells become firmly adherent to the culture vessel. - [Read Isolation and Culture of Mouse Bone Marrow-Derived Macrophages Protocol]
Isolation of Murine Macrophages Protocol- https://catalog.invitrogen.com/index.cfm?fuseaction=iProtocol.unitSectionTree&treeNodeID=9E6632549C959D0FFF7FD119F10D62D9&objectid=667572BADF718B4599BE6AE4ADD48CB3
Protocol that investigates macrophage activation using a more homogeneous population of cells, macrophages derived from immature progenitor cells in bone marrow can be studied. A second protocol describes the isolation of bone marrow-derived progenitor cells and propagation of these immature macrophages by CSFs or IL-3. - [Read Isolation of Murine Macrophages Protocol]
RAW 264.7 cells are a macrophage-like, Abelson leukemia virus
transformed cell line derived from BALB/c mice. For routine maintenance in culture (passage), cells are seeded at a confluence of approximately 10% (1 x 106 and 3 x 106 cells in 100-mm and 150-mm plates, respectively) and grown to a confluence of approximately 80%. This procedure requires the cells to be split every two days. - [Read Passage Procedure for RAW 264.7 Cells]