Abcam, ab316082, Recombinant Human LIF (Active) protein

Size: 100µg / 500µg
Recombinant Human LIF (Active) protein is a Human Fragment protein, in the 23 to 202 aa range, expressed in HEK 293 cells, with >95%, < 1 EU/µg endotoxin level.
Key facts
Purity:>95% HPLC,
Endotoxin level:< 1 EU/µg,
Expression system:HEK 293 cells,
Tags:Tag free,
Biologically active:Yes,
Biological activity:Immobilized Human LIF at 2ug/ml (100ul/Well) on the plate. Dose response curve for Human LIF R, hFc Tag with the EC50 of 55.9ng/ml determined by ELISA.,
Accession:P15018,
Animal free:No,
Carrier free:No,
Species:Human,
Reconstitution:Centrifuge the tube before opening. Reconstituting to a concentration more than 100 ug/ml is recommended. Dissolve the lyophilized protein in distilled water.,
Storage buffer:Constituents: PBS, 8% Trehalose

Properties and Storage Information:
Shipped at conditions-Ambient - Can Ship with Ice, Appropriate short-term storage duration-A few days, Appropriate short-term storage conditions-+4°C, Appropriate long-term storage conditions--20°C, -80°C, Aliquoting information-Upon delivery aliquot, Storage information-Avoid freeze / thaw cycle

Supplementary Information:
This supplementary information is collated from multiple sources and compiled automatically.
Leukemia Inhibitory Factor (LIF) also known as LIF protein plays a critical mechanical role in cell communication and survival. It is a glycoprotein with a molecular weight (LIF MW) generally around 19 kilodaltons. In various tissues particularly in the mouse LIF expression occurs in the bone marrow muscle and notably the nervous system. Besides its presence in normal tissues it shows up in embryonic stem cells where it maintains their pluripotency in culture conditions.
Biological function summary
LIF influences cell differentiation growth and inflammatory response. As part of the interleukin-6 cytokine family LIF exerts its effects through a receptor complex involving LIFR (LIF receptor) and GP130. The LIF protein's signaling controls processes like neuronal cell differentiation and bone formation. It impacts hematopoietic cells and supports embryonic implantation and placental development by preparing the uterine environment.
Pathways
The LIF protein is essential in the JAK/STAT signaling pathway which regulates gene expression vital for survival and proliferation. It also interacts with the MAPK/ERK pathway ensuring diverse cellular responses. These pathways link LIF to related proteins like STAT3 and ERK1/2 which mediate further downstream effects. The interplay between these signaling cascades highlights LIF's role in managing cell survival and proliferation in various contexts.
LIF contributes to physiological and pathological states. In cancer such as leukemia LIF influences tumor growth and cancer cell survival. The interaction with other cytokines like Interleukin-6 enhances its effect in oncogenic processes. In inflammatory diseases like rheumatoid arthritis LIF's role relates to inflammation and joint destruction. Understanding its interaction with inflammatory mediators can aid in targeted therapeutic strategies.