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  5. Galectin-9/LGALS9 Protein, Human (HEK293, His)

Galectin-9/LGALS9 Protein acts as an eosinophil chemoattractant, recruiting and migrating eosinophils, key immune cells in inflammatory responses. It also serves as an angiogenesis inhibitor, regulating blood vessel formation and impacting vascular processes. Functioning as a regulatory modulator, Galectin-9/LGALS9 suppresses interferon-gamma (IFNG) production by natural killer cells, exerting control over immune signaling pathways. Galectin-9/LGALS9 Protein, Human (HEK293, His) is the recombinant human-derived Galectin-9/LGALS9 protein, expressed by HEK293 , with C-6*His labeled tag.

For research use only. We do not sell to patients.

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Galectin-9/LGALS9 Protein, Human (HEK293, His) Featured Recommendations:

Top Publications Citing Use of Products
WB
IP
IF
Flow Cytometry
ELISA
Cell Proliferation/Viability Assay
Cell Migration/Invasion Assay

    Galectin-9/LGALS9 Protein, Human (HEK293, His) purchased from MCE. Usage Cited in: Life Sci. 2026 Mar 1:388:124173.  [Abstract]

    Stimulation of IL-4 and IL-10 production by Gal-9 (Galectin-9/LGALS9) (1 μg/mL; 24-72 h) exogenously added to cultured PBMCs from early pregnant women. PBMCs were cultured with or without recombinant human Gal-9, and IL-4/IL-10 levels were measured at the indicated time points.

    Galectin-9/LGALS9 Protein, Human (HEK293, His) purchased from MCE. Usage Cited in: Cancer Genet. 2025 Sep 10:298-299:141-150.  [Abstract]

    Galectin-9/LGALS9 (Gal-9) (40 ng/mL; 48 h). The expression of Argnise-1, CD163, IL-10 and iNOS in THP-1 was detected by Western Blot.

    Galectin-9/LGALS9 Protein, Human (HEK293, His) purchased from MCE. Usage Cited in: Cancer Genet. 2025 Sep 10:298-299:141-150.  [Abstract]

    Galectin-9/LGALS9 (Gal-9) (40 ng/mL; 12 h). Co-IP assays were performed to examine the protein–protein interactions of Tim-3 with p85 and p110 with p85, respectively.

    Galectin-9/LGALS9 Protein, Human (HEK293, His) purchased from MCE. Usage Cited in: Cancer Genet. 2025 Sep 10:298-299:141-150.  [Abstract]

    Galectin-9/LGALS9 (Gal-9) (40 ng/mL; 48 h). Colocalization of Tim-3 and P85 or P110 and P85 was assayed by immunofluorescence detection. Bars, 5 μm.

    Galectin-9/LGALS9 Protein, Human (HEK293, His) purchased from MCE. Usage Cited in: Cancer Genet. 2025 Sep 10:298-299:141-150.  [Abstract]

    Expression of CD86 and CD163 on THP-1 cells treated with or without rhGal-9 (Galectin-9/LGALS9) (40 ng/mL; 24 h) protein was detected by flow cytometry.

    Galectin-9/LGALS9 Protein, Human (HEK293, His) purchased from MCE. Usage Cited in: Cancer Genet. 2025 Sep 10:298-299:141-150.  [Abstract]

    Galectin-9/LGALS9 (Gal-9) (40 ng/mL; 24 h). Proliferation of HTC116 and RKO was detected using CCK-8. The CCK-8 assay revealed that galectin-9-pretreated macrophages promoted the proliferation.

    Galectin-9/LGALS9 Protein, Human (HEK293, His) purchased from MCE. Usage Cited in: Cancer Genet. 2025 Sep 10:298-299:141-150.  [Abstract]

    Wound healing assay of HCT116. Bars, 200 μm. The results showed that Galectin-9 (Galectin-9/LGALS9) (40 ng/mL; 24 h)-pretreated macrophages promoted the migration.
    • Biological Activity

    • Technical Parameters

    • Properties

    • Documentation

    Description

    Galectin-9/LGALS9 Protein acts as an eosinophil chemoattractant, recruiting and migrating eosinophils, key immune cells in inflammatory responses. It also serves as an angiogenesis inhibitor, regulating blood vessel formation and impacting vascular processes. Functioning as a regulatory modulator, Galectin-9/LGALS9 suppresses interferon-gamma (IFNG) production by natural killer cells, exerting control over immune signaling pathways. Galectin-9/LGALS9 Protein, Human (HEK293, His) is the recombinant human-derived Galectin-9/LGALS9 protein, expressed by HEK293 , with C-6*His labeled tag.

    Background

    Galectin-9/LGALS9 protein functions as an eosinophil chemoattractant, actively participating in the recruitment and migration of eosinophils, crucial immune cells involved in inflammatory responses. Moreover, it serves as an angiogenesis inhibitor, contributing to the regulation of blood vessel formation and impacting vascular processes. In its role as a regulatory modulator of immune responses, Galectin-9/LGALS9 suppresses interferon-gamma (IFNG) production by natural killer cells, exerting control over immune signaling pathways (By similarity).

    Biological Activity

    Measured by the ability of the immobilized protein to support the adhesion of Jurkat human acute T cell leukemia cells. The ED50 for this effect is 0.3-1.0 μg/mL.

    • Measured by the ability of the immobilized protein to support the adhesion of Jurkat human acute T cell leukemia cells. The ED50 for this effect is 0.4007 μg/mL, corresponding to a specific activity is 2495.633 units/mg.
    Species

    Human

    Source

    HEK293

    Tag

    C-6*His

    Accession

    O00182-2 (M1-T323)

    Gene ID
    Molecular Construction
    N-term
    LGALS9 (M1-T323)
    Accession # O00182-2
    6*His
    C-term
    Protein Length

    Full Length

    Synonyms
    Galectin-9; Gal-9; Ecalectin; Tumor Antigen HOM-HD-21; LGALS9
    AA Sequence

    MAFSGSQAPYLSPAVPFSGTIQGGLQDGLQITVNGTVLSSSGTRFAVNFQTGFSGNDIAFHFNPRFEDGGYVVCNTRQNGSWGPEERKTHMPFQKGMPFDLCFLVQSSDFKVMVNGILFVQYFHRVPFHRVDTISVNGSVQLSYISFQPPGVWPANPAPITQTVIHTVQSAPGQMFSTPAIPPMMYPHPAYPMPFITTILGGLYPSKSILLSGTVLPSAQRFHINLCSGNHIAFHLNPRFDENAVVRNTQIDNSWGSEERSLPRKMPFVRGQSFSVWILCEAHCLKVAVDGQHLFEYYHRLRNLPTINRLEVGGDIQLTHVQT

    Molecular Weight

    Approximately 49 kDa, based on SDS-PAGE under reducing conditions.

    Glycosylation
    Yes
    Purity
    • ≥ 95%, as determined by reducing SDS-PAGE.
    Appearance

    Lyophilized powder

    Formulation

    1.Lyophilized from a 0.22 μm filtered solution of 20 mM His-HCl, 8% trehalose, 2% mannitol, 0.05% Tween 80, 1 mM EDTA, 1 mM DTT, pH 6.0.
    2.Lyophilized from a 0.22 μm filtered solution of PBS, pH 7.4, 5 mM DTT, 1 mM EDTA, 8% trehalose.
    Please refer to the lot-specific COA for specific buffer information.

    Endotoxin Level

    <1 EU/μg, determined by LAL method.

    Reconstitution

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

    Storage & Stability

    Stored at -20°C for 2 years from date of receipt. 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.

    Shipping

    Room temperature in continental US; may vary elsewhere.

    Documentation

    Galectin-9/LGALS9 Protein, Human (HEK293, His) Related Classifications

    Help & FAQs
    • Do most proteins show cross-species activity?

      Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

    • Reconstitution Calculator

    • Dilution Calculator

    • Specific Activity Calculator

    The reconstitution calculator equation

    Volume (to add to vial) = Mass (in vial) ÷ Desired Reconstitution Concentration

    Volume (to add to vial) = Mass (in vial) ÷ Desired Reconstitution Concentration
    = ÷

    The dilution calculator equation

    Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

    This equation is commonly abbreviated as: C1V1 = C2V2

    Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
    × = ×
    C1   V1   C2   V2

    The specific activity calculator equation

    Specific Activity (Unit/mg) = 106 ÷ Biological Activity (ED50)

    Specific Activity (Unit/mg) = 106 ÷ Biological Activity (ED50)
    Unit/mg = 106 ÷ ng/mL

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    Product Name:
    Galectin-9/LGALS9 Protein, Human (HEK293, His)
    Cat. No.:
    HY-P70535
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