CSF1R Protein, Mouse (HEK293, Fc)

The CSF1R protein is a tyrosine protein kinase receptor for CSF1 and IL34 and plays a critical regulatory role in hematopoietic cells, especially mononuclear phagocytes. Its effects span innate immunity, inflammation, osteoclast function, skeletal development, and fertility. CSF1R Protein, Mouse (HEK293, Fc) is the recombinant mouse-derived CSF1R protein, expressed by HEK293 , with C-hFc labeled tag. The total length of CSF1R Protein, Mouse (HEK293, Fc) is 492 a.a., with molecular weight of ~81.9 kDa.

CSF1R protein, a tyrosine-protein kinase, serves as a cell-surface receptor for CSF1 and IL34, exerting pivotal control over the survival, proliferation, and differentiation of hematopoietic precursor cells, particularly mononuclear phagocytes like macrophages and monocytes. Its role in innate immunity and inflammatory processes is underscored by its promotion of the release of pro-inflammatory chemokines in response to IL34 and CSF1. Additionally, CSF1R plays a critical role in the regulation of osteoclast proliferation and differentiation, bone resorption, and is indispensable for normal bone and tooth development. It is essential for normal fertility in both males and females, as well as for the development of milk ducts and acinar structures in the mammary gland during pregnancy. Notably, CSF1R influences the reorganization of the actin cytoskeleton, regulates the formation of membrane ruffles, cell adhesion, cell migration, and facilitates cancer cell invasion. Upon ligand binding, CSF1R activates multiple signaling pathways, including ERK1/2, JNK, PI3K/AKT, MAP kinases (MAPK1/ERK2 and/or MAPK3/ERK1), and SRC family kinases (SRC, FYN, YES1). Its downstream effects involve the phosphorylation of various target proteins, such as PIK3R1, PLCG2, GRB2, SLA2, and CBL. Furthermore, CSF1R mediates the activation of STAT family members (STAT3, STAT5A, and/or STAT5B) and promotes tyrosine phosphorylation of SHC1 and INPP5D/SHIP-1. The receptor signaling is tightly regulated by protein phosphatases, including INPP5D/SHIP-1, and by the rapid internalization of the activated receptor. In the central nervous system, CSF1R may contribute to the development of microglia macrophages.

Measured by its ability to inhibit the mouse CSF-induced proliferation of M-NFS-60 mouse myelogenous leukemia lymphoblast cells. The ED₅₀ for this effect is typically 0.1-0.7 μg/mL in the presence of 15 ng/mL mouse M-CSF.

Mouse

HEK293

C-hFc

P09581 (A20-S511)

12978  [NCBI]

MELGPPLVLLLATVWHGQGAPVIEPSGPELVVEPGETVTLRCVSNGSVEWDGPISPYWTLDPESPGSTLTTRNATFKNTGTYRCTELEDPMAGSTTIHLYVKDPAHSWNLLAQEVTVVEGQEAVLPCLITDPALKDSVSLMREGGRQVLRKTVYFFSPWRGFIIRKAKVLDSNTYVCKTMVNGRESTSTGIWLKVNRVHPEPPQIKLEPSKLVRIRGEAAQIVCSATNAEVGFNVILKRGDTKLEIPLNSDFQDNYYKKVRALSLNAVDFQDAGIYSCVASNDVGTRTATMNFQVVESAYLNLTSEQSLLQEVSVGDSLILTVHADAYPSIQHYNWTYLGPFFEDQRKLEFITQRAIYRYTFKLFLNRVKASEAGQYFLMAQNKAGWNNLTFELTLRYPPEVSVTWMPVNGSDVLFCDVSGYPQPSVTWMECRGHTDRCDEAQALQVWNDTHPEVLSQKPFDKVIIQSQLPIGTLKHNMTYFCKTHNSVGNSSQYFRAVSLGQSKQLPDES

Approximately 81.9 kDa

Greater than 95% as determined by reducing SDS-PAGE.

Lyophilized powder

Lyophilized from a 0.2 μm filtered solution of PBS, pH 7.4, 5% Trehalose, 5% Mannitol, 0.01% Tween-80.

<1 EU/μg, determined by LAL method.

It is not recommended to reconstitute to a concentration less than 100 μg/mL in ddH₂O.

Stored at -20°C for 2 years. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.

Room temperature in continental US; may vary elsewhere.