Recombinant Human IL-10 Protein

Cat # Size Price Quantity
63000120 µg$300
630002100 µg$780

Product Details


ApplicationBioassay
FormatLyophilized from sterile PBS, pH 7.4.
Expression HostE.coli
Target NameIL-10, IL10, Interleukin-10, B-TCGF, CSIF, TGIF
SpeciesHuman
accession numberNP_000563.1
SourcesA DNA sequence encoding human IL10 (NP_000563.1) (Ser19-Asn178) was expressed.
Molecular WeightThe recombinant human IL10 consists of 161 amino acids and predicts a molecular mass of 18.78 KDa. It migrates as an approximately 18 KDa band in SDS-PAGE under reducing conditions.
Affinity TagNone
Purity≥ 95 % as determined by SDS-PAGE. ≥ 95 % as determined by SEC-HPLC.
Regulatory StatusRUO
Endotoxin level<0.1EU per μg protein
Protein ConcentrationLyophilized
Storage and HandlingProteins are stable for up to twelve months from date of receipt at -20℃ to -80℃. Store it under sterile conditions at -20℃ to -80℃. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.
Research AreasCytokines, Anti-inflammatory, Wound Healing, Homeostasis, Autoimmunity

Background Information


Human IL-10 (interleukin-10) is a key anti-inflammatory cytokine that plays a central role in limiting immune responses and maintaining immune homeostasis. It is produced by a variety of immune cells, including regulatory T cells (Tregs), macrophages, dendritic cells, and certain B cell subsets. IL-10 primarily functions to suppress the production of pro-inflammatory cytokines such as TNF-α, IL-6, and IL-12, thereby preventing excessive tissue damage during immune responses. It also inhibits antigen presentation by downregulating MHC class II and co-stimulatory molecules on antigen-presenting cells.

Structurally, IL-10 is a homodimeric protein composed of two identical subunits, each containing six α-helices. The functional cytokine forms through non-covalent interactions between these subunits, creating a stable dimer that binds to its receptor complex. The IL-10 receptor is a heterotetramer consisting of two IL-10R1 (alpha) chains and two IL-10R2 (beta) chains. Upon ligand binding, the receptor activates intracellular signaling pathways, primarily through JAK1 and TYK2 kinases, leading to STAT3 phosphorylation and transcription of anti-inflammatory genes.

IL-10 does not have multiple classical ligands; rather, it itself is the ligand for the IL-10 receptor complex. However, it belongs to a broader IL-10 cytokine family that includes related molecules such as IL-19, IL-20, and IL-22, which share structural similarities but have distinct receptor usage and biological functions.

In disease, IL-10 plays a dual role. Its anti-inflammatory activity is protective in conditions such as autoimmune diseases, including inflammatory bowel disease and rheumatoid arthritis. However, excessive IL-10 production can contribute to immune suppression in chronic infections and cancer, allowing pathogens or tumor cells to evade immune surveillance.

Therapeutically, IL-10 has been explored both as a treatment and as a target. Recombinant IL-10 has been investigated for inflammatory and autoimmune diseases, although clinical success has been limited. Conversely, blocking IL-10 signaling may enhance anti-tumor immunity in cancer immunotherapy. Ongoing research aims to better harness IL-10’s regulatory properties for precise immune modulation.

Data Sheets


Recombinant Human IL-10 Protein TDS

Frequently Asked Questions


What are InnoCyto's Cytokines and Growth Factors?
These are recombinantly expressed signaling proteins, including interleukins, interferons, chemokines, and growth factors, that mediate cell communication, proliferation, differentiation, and immune activation. They are produced for use as research reagents to stimulate, modulate, or study cellular responses in vitro and in vivo.

What expression systems are these proteins produced in, and does it matter for my application?
Cytokines and growth factors may be produced in mammalian, insect, or E. coli expression systems depending on the protein, and the system affects properties like glycosylation, folding, and bioactivity. Non-glycosylated proteins from E. coli are often suitable for cell culture stimulation assays, while glycosylation-dependent proteins may require mammalian- or insect-expressed versions for full biological activity — check the product page for the expression system and recommended applications.

How is bioactivity measured and confirmed for each lot?
Bioactivity is typically confirmed using a functional cell-based assay (e.g., proliferation, differentiation, or reporter assay) relevant to the specific cytokine or growth factor, and is reported as an EC50/ED50 value or specific activity (units/mg) on the Certificate of Analysis. Always reference the lot-specific CoA rather than assuming activity is identical across lots or products.

Are these proteins carrier-free, and does that matter for my experiment?
Carrier-free formulations (without BSA or other stabilizing proteins) are available for applications where carrier protein could interfere with downstream analysis, such as certain in vivo studies or proteomic work, while carrier-containing formulations offer improved stability for routine cell culture use. Choose the format that matches your assay's sensitivity to background protein content.

Can these cytokines and growth factors be used for in vivo studies?
Mouse proteins may be used in vivo, but suitability depends on your endotoxin requirements for in vivo use. Endotoxin minimum threshholds vary by product and are indicated on the individual product page. Always confirm the endotoxin specification and formulation on the Certificate of Analysis before using a product in an in vivo setting.

Have a product or application question? Consult our FAQs or contact us.