Description
Product Description
Emfilermin (CAS 159075-60-2) is a recombinant human leukemia inhibitory factor (LIF), a pleiotropic cytokine in the interleukin-6 (IL-6) family. LIF is a multifunctional protein involved in cell growth, survival, and differentiation, as well as immune modulation. The recombinant form, Emfilermin, has been developed for research purposes in areas ranging from chemotherapy-induced peripheral neuropathy to embryo implantation biology and stem cell research.
Background and Biological Role
Leukemia inhibitory factor (LIF) was first identified as a factor capable of inducing terminal differentiation in myeloid leukemia cells. Since then, it has been recognized as a critical regulator in multiple biological systems:
Neurobiology: LIF promotes neuronal survival, axonal regeneration, and protection against neurotoxic injury.
Reproductive Medicine: It plays a crucial role in endometrial receptivity and embryo implantation.
Cancer Biology: LIF contributes to tumor–immune interactions, angiogenesis, and cancer cell resistance.
Hematopoiesis: It regulates survival and differentiation of hematopoietic progenitors.
Research Relevance
Chemotherapy-Induced Peripheral Neuropathy (CIPN)
Chemotherapy agents such as platinum derivatives, taxanes, and vinca alkaloids often cause neurotoxicity.
Emfilermin is studied for its ability to protect neurons, reduce apoptosis, and restore nerve function.
Stem Cell Biology
LIF maintains pluripotency in murine embryonic stem cells via the STAT3 signaling pathway.
Emfilermin is widely used to understand pluripotency maintenance and differentiation.
Reproductive Biology
LIF is essential for embryo implantation. Emfilermin provides a tool for studying uterine biology, fertility, and early pregnancy loss.
Cancer and Immunology
Research explores LIF’s dual role in tumor promotion and immune regulation.
Emfilermin is used as a model to study how modulating cytokine signaling influences tumor biology.
Product Specifications
| Item | Details |
|---|---|
| Product Name | Emfilermin |
| CAS No. | 159075-60-2 |
| Synonyms | Recombinant human LIF, rHuLIF |
| Molecular Type | Recombinant cytokine protein |
| Source | Recombinant expression system |
| Molecular Weight | ~20 kDa (glycosylated form varies) |
| Purity | ≥95% (SDS-PAGE) |
| Appearance | Lyophilized powder |
| Solubility | Soluble in PBS, culture medium, or aqueous buffers |
| Storage | -20°C to -80°C, desiccated, protected from light |
| Stability | Stable for 12 months under proper storage |
| Applications | Chemotherapy-induced peripheral neuropathy, reproductive biology, neurobiology, cancer immunology, stem cell research |
Notes
Validated by SDS-PAGE and Western blotting.
Endotoxin-free preparations available.
Supplied in sterile vials.
Mechanism of Action
Emfilermin functions through LIF receptor (LIFR) and gp130 heterodimer signaling.
Receptor Binding
LIF binds to LIFR, which forms a heterodimer with gp130, activating intracellular signaling cascades.
JAK/STAT3 Pathway
Central to pluripotency and survival.
Promotes stem cell maintenance and prevents apoptosis.
MAPK/ERK Pathway
Drives differentiation in certain cell lineages.
Contributes to neuronal regeneration and immune modulation.
PI3K/AKT Pathway
Enhances cell survival, neuroprotection, and anti-apoptotic activity.
Immune Modulation
Alters cytokine release, regulates inflammation, and influences tumor–immune interactions.
Neuroprotection
In models of CIPN, Emfilermin reduces neuronal apoptosis, protects sensory neurons, and supports axonal regeneration.
Reproductive Role
Enhances uterine receptivity via regulation of adhesion molecules and cytokine signaling.

Side Effects
Research Observations
In laboratory models, Emfilermin has shown low systemic toxicity.
Effects depend on dosage and exposure time.
Potential Risks
Overactivation of LIF pathways may contribute to pro-tumorigenic activity in some models.
Possible immune system modulation, requiring careful interpretation of results.
At high concentrations, may induce differentiation in unintended cell types.
Laboratory Safety Notes
Intended for research use only.
Handle under sterile conditions.
Store at recommended conditions to prevent degradation.
Disclaimer
This product is intended for research purposes only. Emfilermin is not approved for human therapeutic or diagnostic use.
Keywords
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