lif - Leukemia Inhibitory Factor

lif - Leukemia Inhibitory Factor

lif - Leukemia Inhibitory Factor

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  • View Data Sheet

    Description:

    Leukemia Inhibitory Factor Human Recombinant

    CDF, HILDA, D-FACTOR, Differentiation- stimulating factor, Melanoma-derived LPL inhibitor, MLPLI, Emfilermin, Leukemia inhibitory factor, LIF, DIA.

    Product # :

    CYT-644

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    Description

    Leukemia Inhibitory Factor (LIF) Human Recombinant produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 180 amino acids and having a molecular mass of 19.7kDa. The Leukemia Inhibitory Factor (LIF) is purified by proprietary chromatographic techniques.

    Source

    Escherichia Coli.

    Formulation

    Leukemia Inhibitory Factor (LIF) was lyophilized from a concentrated (1mg/ml) sterile solution containing 1xPBS pH 7.4.

    Purity

    Greater than 98.0% as determined by:
    (a) Analysis by RP-HPLC.
    (b) Analysis by SDS-PAGE.

    Biological Activity

    The ED50 was determined by the M1 cell differentiation assay is < 0.01 ng/ml, corresponding to a specific activity of 100,000,000IU/mg.

    More Info

    • Introduction

      Leukemia Inhibitory Factor also called LIF is a lymphoid factor that promotes long-term maintenance of embryonic stem cells by suppressing spontaneous differentiation. Leukemia Inhibitory Factor has several functions such as cholinergic neuron differentiation, control of stem cell pluripotency, bone & fat metabolism, mitogenesis of factor dependent cell lines & promotion of megakaryocyte production in vivo. Human and mouse LIF exhibit a 78% identity in its amino acid sequence.

    • Synonyms

      CDF, HILDA, D-FACTOR, Differentiation- stimulating factor, Melanoma-derived LPL inhibitor, MLPLI, Emfilermin, Leukemia inhibitory factor, LIF, DIA.

    • Physical Appearance

      Sterile Filtered White lyophilized (freeze-dried) powder.

    • Stability

      Lyophilized Leukemia Inhibitory Factor (LIF) although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution Leukemia Inhibitory Factor (LIF) should be stored at 4°C between 2-7 days and for future use below -18°C.For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).Please prevent freeze-thaw cycles.

    • Solubility

      It is recommended to reconstitute the lyophilized Leukemia Inhibitory Factor (LIF) in sterile water not less than 100µg/ml, which can then be further diluted to other aqueous solutions.

    • Amino Acid Sequence

      SPLPITPVNA TCAIRHPCHN NLMNQIRSQL AQLNGSANAL FILYYTAQGE PFPNNLDKLC GPNVTDFPPF HANGTEKAKL VELYRIVVYL GTSLGNITRD QKILNPSALS LHSKLNATAD ILRGLLSNVL CRLCSKYHVG HVDVTYGPDT SGKDVFQKKK LGCQLLGKYK QIIAVLAQAF.

    • Background

      Leukemia Inhibitory Factor (LIF) Background

      Leukemia Inhibitory Factor (LIF) is a cytokine within the interleukin-6 family. It is influential in the hypothalamus and involved in energy balance.

      LIF stimulates ACTH secretion and affects the stress and immune response in the body. Administration of LIF has been shown to correct low plasma ACTH and repair hypothalamic-pituitary-adrenal (HPA) axis responses.

      Function and Applications of LIF

      LIF prevents the proliferation of myeloid leukemia cells by inducing their terminal differentiation. Beyond cancer, LIF influences bone metabolism, embryogenesis, and inflammation.

      Moreover, it supports the self-renewal of stem cells in culture by activating Stat3, thus preventing spontaneous differentiation, and is studied for potential benefits in fertility treatments.

      Structure and Interactions

      LIF's structure consists of a four alpha-helix bundle similar to other hematopoietic cytokines. It interacts with components such as the ciliary neurotrophic factor (CNTF) through multimeric receptors, influencing both cytokine's effects on cells. This interaction is crucial for forming high-affinity binding sites that mediate their biological activities.

    ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

    Lif Human
  • View Data Sheet

    Description:

    Leukemia Inhibitory Factor Receptor Alpha Mouse Recombinant

    Leukemia inhibitory factor receptor, LIF receptor, LIF-R, D-factor/LIF receptor, CD118, CD antigen, leukemia inhibitory factor receptor isoform 1 precursor, Lifr.

    Product # :

    CYT-1170

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    Description

    LIFR Mouse Recombinant produced in Baculovirus is a single glycosylated polypeptide chain containing 794 amino acids (44-828 aa) and having a molecular mass of 89.6kDa.LIFR is fused to a 9 amino acid His tag at C-terminus and purified by proprietary chromatographic techniques.

    Source

    Sf9, Baculovirus cells.

    Formulation

    LIFR protein (0.25mg/ml) contains 10% glycerol and Phosphate-Buffered Saline (pH 7.4).

    Purity

    Greater than 90.0% as determined by SDS-PAGE.

    Biological Activity

    Measured by its ability to inhibit proliferation using TF-1 human erythroleukemic cells. The ED50 range ≤ 1ug/ml with Mouse LIF.

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    • Introduction

      Leukemia Inhibitory Factor Receptor Alpha or LIFR is a protein, part of the Interleukin-6 receptor group of proteins. As such, LIFR acts as a mediator for various proteins (IL-6, IL-11, IL-27, Oncostatin M etc). LIFR has many functions as a cytokine, he has an affect on the cell proliferation, differentiation and survival in the different stages of life. In different types of breast cancer LIFR is down regulated, and as such, can be used as a prognostic tool.

    • Synonyms

      Leukemia inhibitory factor receptor, LIF receptor, LIF-R, D-factor/LIF receptor, CD118, CD antigen, leukemia inhibitory factor receptor isoform 1 precursor, Lifr.

    • Physical Appearance

      Sterile Filtered colorless solution.

    • Stability

      Store at 4°C if entire vial will be used within 2-4 weeks. Store, frozen at -20°C for longer periods of time. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).Avoid multiple freeze-thaw cycles.

    • Amino Acid Sequence

      ADPLKRGVQD LKCTTNNMRV WDCTWPAPLG VSPGTVKDIC IKDRFHSCHP LETTNVKIPA LSPGDHEVTI NYLNGFQSKF TLNEKDVSLI PETPEILDLS ADFFTSSLLL KWNDRGSALP HPSNATWEIK VLQNPRTEPV ALVLLNTMLS GKDTVQHWNW TSDLPLQCAT HSVSIRWHID SPHFSGYKEW SDWSPLKNIS WIRNTETNVF PQDKVVLAGS NMTICCMSPT KVLSGQIGNT LRPLIHLYGQ TVAIHILNIP VSENSGTNII FITDDDVYGT VVFAGYPPDV PQKLSCETHD LKEIICSWNP GRITGLVGPR NTEYTLFESI SGKSAVFHRI EGLTNETYRL GVQMHPGQEI HNFTLTGRNP LGQAQSAVVI NVTERVAPHD PTSLKVKDIN STVVTFSWYL PGNFTKINLL CQIEICKANS KKEVRNATIR GAEDSTYHVA VDKLNPYTAY TFRVRCSSKT FWKWSRWSDE KRHLTTEATP SKGPDTWREW SSDGKNLIVY WKPLPINEAN GKILSYNVSC SLNEETQSVL EIFDPQHRAE IQLSKNDYII SVVARNSAGS SPPSKIASME IPNDDITVEQ AVGLGNRIFL TWRHDPNMTC DYVIKWCNSS RSEPCLLDWR KVPSNSTETV IESDQFQPGV RYNFYLYGCT NQGYQLLRSI IGYVEELAPI VAPNFTVEDT SADSILVKWD DIPVEELRGF LRGYLFYFQK GERDTPKTRS LEPHHSDIKL KNITDISQKT LRIADLQGKT SYHLVLRAYT HGGLGPEKSM FVVTKENSHH HHHH.

    ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

    Lifr Mouse
  • View Data Sheet

    Description:

    Leukemia Inhibitory Factor Receptor Alpha Human Recombinant

    Leukemia Inhibitory Factor Receptor Alpha, CD118 Antigen, LIF Receptor, LIF-R, Leukemia Inhibitory Factor Receptor, CD118, SJS2, STWS, SWS, Leukemia inhibitory factor receptor, LIF receptor, LIF-R.

    Product # :

    CYT-949

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    Description

    LIFR produced in Sf9 Baculovirus cells is a single, glycosylated polypeptide chain containing 798 amino acids (45-833a.a.) and having a molecular mass of 90.5kDa (Molecular size on SDS-PAGE will appear at approximately 100-150kDa). LIFR is expressed with a 6 amino acid His tag at C-Terminus and purified by proprietary chromatographic techniques.

    Source

    Sf9, Baculovirus cells.

    Formulation

    LIFR protein solution (0.5mg/ml) contains Phosphate Buffered Saline (pH 7.4) and 10% glycerol.

    Purity

    Greater than 90.0% as determined by SDS-PAGE.

    More Info

    • Introduction

      Leukemia inhibitory factor receptor (LIFR) is the receptor for leukemia inhibitory factor, a pleiotropic cytokine affecting the differentiation, survival, and proliferation of various cells in the adult and the embryo. LIFR plays an imperative role in a number of aspects of early pregnancy such as blastocyst implantation in the uterus.

    • Synonyms

      Leukemia Inhibitory Factor Receptor Alpha, CD118 Antigen, LIF Receptor, LIF-R, Leukemia Inhibitory Factor Receptor, CD118, SJS2, STWS, SWS, Leukemia inhibitory factor receptor, LIF receptor, LIF-R.

    • Physical Appearance

      Sterile filtered colorless solution.

    • Stability

      Store at 4°C if entire vial will be used within 2-4 weeks. Store, frozen at -20°C for longer periods of time. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA). Avoid multiple freeze-thaw cycles.

    • Amino Acid Sequence

      ADPQKKGAPH DLKCVTNNLQ VWNCSWKAPS GTGRGTDYEV CIENRSRSCY QLEKTSIKIP ALSHGDYEIT INSLHDFGSS TSKFTLNEQN VSLIPDTPEI LNLSADFSTS TLYLKWNDRG SVFPHRSNVI WEIKVLRKES MELVKLVTHN TTLNGKDTLH HWSWASDMPL ECAIHFVEIR CYIDNLHFSG LEEWSDWSPV KNISWIPDSQ TKVFPQDKVI LVGSDITFCC VSQEKVLSAL IGHTNCPLIH LDGENVAIKI RNISVSASSG TNVVFTTEDN IFGTVIFAGY PPDTPQQLNC ETHDLKEIIC SWNPGRVTAL VGPRATSYTL VESFSGKYVR LKRAEAPTNE SYQLLFQMLP NQEIYNFTLN AHNPLGRSQS TILVNITEKV YPHTPTSFKV KDINSTAVKL SWHLPGNFAK INFLCEIEIK KSNSVQEQRN VTIKGVENSS YLVALDKLNP YTLYTFRIRC STETFWKWSK WSNKKQHLTT EASPSKGPDT WREWSSDGKN LIIYWKPLPI NEANGKILSY NVSCSSDEET QSLSEIPDPQ HKAEIRLDKN DYIISVVAKN SVGSSPPSKI ASMEIPNDDL KIEQVVGMGK GILLTWHYDP NMTCDYVIKW CNSSRSEPCL MDWRKVPSNS TETVIESDEF RPGIRYNFFL YGCRNQGYQL LRSMIGYIEE LAPIVAPNFT VEDTSADSIL VKWEDIPVEE LRGFLRGYLF YFGKGERDTS KMRVLESGRS DIKVKNITDI SQKTLRIADL QGKTSYHLVL RAYTDGGVGP EKSMYVVTKE NSHHHHHH.

    ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

    Lifr Human
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    Name :

    LIF Rat

    Description:

    Leukemia Inhibitory Factor Rat Recombinant

    Leukemia inhibitory factor, Cholinergic neuronal differentiation factor, Lif.

    Product # :

    CYT-731

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    Description

    Leukemia Inhibitory Factor (LIF) Rat Recombinant produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 180 amino acids and having a molecular mass of 19.8 kDa. The Leukemia Inhibitory Factor (LIF) is purified by proprietary chromatographic techniques.

    Source

    Escherichia Coli.

    Formulation

    LIF Rat was lyophilized from 0.2µm filtered concentrated solution in 1xPBS, pH 7.4.

    Purity

    Greater than 96.0% as determined by:
    (a) Analysis by RP-HPLC.
    (b) Analysis by SDS-PAGE.

    Biological Activity

    The activity of rat LIF is determined by the ability to induce differentiation of M1 myeloid leukemic cells. The minimum detectable concentration of rat LIF in this assay is 0.5ng/mL.

    More Info

    • Introduction

      Leukemia Inhibitory Factor also called LIF is a lymphoid factor that promotes long-term maintenance of embryonic stem cells by suppressing spontaneous differentiation. Leukemia Inhibitory Factor has several functions such as cholinergic neuron differentiation, control of stem cell pluripotency, bone & fat metabolism, mitogenesis of factor dependent cell lines & promotion of megakaryocyte production in vivo. Human and mouse LIF exhibit a 78% identity in its amino acid sequence.

    • Synonyms

      Leukemia inhibitory factor, Cholinergic neuronal differentiation factor, Lif.

    • Physical Appearance

      Sterile Filtered White lyophilized (freeze-dried) powder.

    • Stability

      Lyophilized Leukemia Inhibitory Factor (LIF) although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution Leukemia Inhibitory Factor (LIF) should be stored at 4°C between 2-7 days and for future use below -18°C. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).Please prevent freeze-thaw cycles.

    • Solubility

      It is recommended to reconstitute the lyophilized Leukemia Inhibitory Factor (LIF) in sterile water not less than 100µg/ml, which can then be further diluted to other aqueous solutions.

    • Amino Acid Sequence

      SPLPITPVNA TCAIRHPCHG NLMNQIKSQL AQLNGSANAL FISYYTAQGE PFPNNVDKLC APNMTDFPPF HANGTEKTKL VELYRMVTYL GASLTNITWD QKNLNPTAVS LQIKLNATTD VMRGLLSSVL CRLCNKYHVG HVDVPCVPDN SSKEAFQRKK LGCQLLGTYK QVISVLAQAF .

    ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

    Lif Rat
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    Description:

    Leukemia Inhibitory Factor Mouse Recombinant

    CDF, HILDA, D-FACTOR, Differentiation- stimulating factor, Melanoma-derived LPL inhibitor, MLPLI, Emfilermin, Leukemia inhibitory factor, LIF, DIA.

    Product # :

    CYT-645

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    Description

    Leukemia Inhibitory Factor (LIF) Murine Recombinant produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 181 amino acids and having a molecular mass of 20 kDa. The Leukemia Inhibitory Factor (LIF) is purified by proprietary chromatographic techniques.

    Source

    Escherichia Coli.

    Formulation

    Leukemia Inhibitory Factor (LIF) was lyophilized from a concentrated (1mg/ml) sterile solution containing 20mM Phosphate buffer pH-7.4 and 0.02% Tween-20.

    Purity

    Greater than 95.0% as determined by(a) Analysis by RP-HPLC.
    (b) Analysis by SDS-PAGE.

    Biological Activity

    Activity of murine LIF was determined by the M1 cell differentiation assay which was found to be < 0.01 ng/ml, corresponding to a specific activity of 100,000,000 IU/mg.
    A standard of 50 Units is defined as the concentration of mouse LIF in 1.0 mL of tissue culture medium that induces the differentiation of 50% of M1 colonies.

    More Info

    • Introduction

      Leukemia Inhibitory Factor also called LIF is a lymphoid factor that promotes long-term maintenance of embryonic stem cells by suppressing spontaneous differentiation. Leukemia Inhibitory Factor has several functions such as cholinergic neuron differentiation, control of stem cell pluripotency, bone & fat metabolism, mitogenesis of factor dependent cell lines & promotion of megakaryocyte production in vivo. Human and mouse LIF exhibit a 78% identity in its amino acid sequence.

    • Synonyms

      CDF, HILDA, D-FACTOR, Differentiation- stimulating factor, Melanoma-derived LPL inhibitor, MLPLI, Emfilermin, Leukemia inhibitory factor, LIF, DIA.

    • Physical Appearance

      Sterile Filtered White lyophilized (freeze-dried) powder.

    • Stability

      Lyophilized Leukemia Inhibitory Factor (LIF) although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution Leukemia Inhibitory Factor (LIF) should be stored at 4°C between 2-7 days and for future use below -18°C. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).Please prevent freeze-thaw cycles.

    • Solubility

      It is recommended to reconstitute the lyophilized Leukemia Inhibitory Factor (LIF) in sterile water not less than 100µg/ml, which can then be further diluted to other aqueous solutions.

    • Amino Acid Sequence

      MSPLPITPVNATCAIRHPCHGNLMNQIKNQLAQLNGSANALFISYYTAQGEPFP NNVEKLCAPNMTDFPSFHGNGTEKTKLVELYRMVAYLSASLTNITRDQKVLNP TAVSLQVKLNATIDVMRGLLSNVLCRLCNKYRVGHVDVPPVPDHSDKEAFQR KKLGCQLLGTYKQVISVVVQAF.

    ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

    Lif Mouse
  • View Data Sheet

    Description:

    LIF Human Recombinant, Yeast

    CDF, HILDA, D-FACTOR, Differentiation- stimulating factor, Melanoma-derived LPL inhibitor, MLPLI, Emfilermin, Leukemia inhibitory factor, LIF, DIA.

    Product # :

    CYT-191

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    Description

    LIF Human Recombinant produced in yeast is a single, glycosylated polypeptide chain containing 180 amino acids and having a molecular mass of 58.5 kDa. The LIF is purified by proprietary chromatographic techniques.

    Source

    Pichia pastoris.

    Formulation

    The protein was lyophilized from a 0.2 µm filtered PBS.

    Purity

    Greater than 98.0% as determined by:
    (a) Analysis by RP-HPLC.
    (b) Analysis by SDS-PAGE.

    Biological Activity

    The biological activity of recombinant human LIF was measured by the ability to induce differentiation of murine M1 myeloid leukemic cells. The minimal detectable concentration of human LIF in this assay is <0.05 ng/mL. The specific activity is > 1 x 108 units/mg.

    More Info

    • Introduction

      Leukemia Inhibitory Factor also called LIF is a lymphoid factor that promotes long-term maintenance of embryonic stem cells by suppressing spontaneous differentiation. Leukemia Inhibitory Factor has several functions such as cholinergic neuron differentiation, control of stem cell pluripotency, bone & fat metabolism, mitogenesis of factor dependent cell lines & promotion of megakaryocyte production in vivo. Human and mouse LIF exhibit a 78% identity in its amino acid sequence.

    • Synonyms

      CDF, HILDA, D-FACTOR, Differentiation- stimulating factor, Melanoma-derived LPL inhibitor, MLPLI, Emfilermin, Leukemia inhibitory factor, LIF, DIA.

    • Physical Appearance

      Sterile Filtered White lyophilized (freeze-dried) powder.

    • Stability

      Lyophilized LIF although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution LIF should be stored at 4°C between 2-7 days and for future use below -18°C. Please prevent freeze-thaw cycles.

    • Solubility

      It is recommended to reconstitute the lyophilized LIF in sterile 18M-cm H2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.

    • Amino Acid Sequence

      S P L P I T P V N A T C A I R H P C H N N L M N Q I R S Q L A Q L N G S A N A L F I L Y Y T A Q G E P F P N N L D K L C G P N V T D F P P F H A N G T E K A K L V E L Y R I V V Y L G T S L G N I T R D Q K I L N P S A L S L H S K L N A T A D I L R G L L S N V L C R L C S K Y H V G H V D V T Y G P D T S G K D V F Q K K K L G C Q L L G K Y K Q I I A V L A Q A F.

    ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

    Lif Human Yeast
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    Description:

    Leukemia Inhibitory Factor Human Recombinant, Sf9

    Leukemia Inhibitory Factor, Differentiation Inhibitory Activity, Cholinergic Differentiation Factor, Differentiation-Stimulating Factor, Hepatocyte-Stimulating Factor III, Differentiation-Inducing Factor, Melanoma-Derived LPL Inhibitor, Human Interleukin In DA Cells, D Factor, HILDA, MLPLI, Emfilermin, DIA, CDF, Leukemia inhibitory factor, LIF, Differentiation-stimulating factor, D factor, Melanoma-derived LPL inhibitor, MLPLI, Emfilermin.

    Product # :

    CYT-1003

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    Description

    LIF Human Recombinant produced in Sf9 Baculovirus cells is a single, glycosylated polypeptide chain containing 189 amino acids (23-202a.a.) and having a molecular mass of 20.8kDa (Molecular size on SDS-PAGE will appear at approximately 18-40kDa). LIF is expressed with a 6 amino acid His tag at C-Terminus and purified by proprietary chromatographic techniques.

    Source

    Sf9, Baculovirus cells.

    Formulation

    LIF protein solution (0.25mg/ml) contains Phosphate Buffered Saline (pH 7.4) and 10% glycerol.

    Purity

    Greater than 90.0% as determined by SDS-PAGE.

    Biological Activity

    Measured in a cell proliferation assay using TF-1 human erythroleukemic cell. The ED50 for this effects is less or equal to 0.5 ng/ml.

    More Info

    • Introduction

      Leukemia Inhibitory Factor also called LIF is a lymphoid factor that promotes long-term maintenance of embryonic stem cells by suppressing spontaneous differentiation. Leukemia Inhibitory Factor has several functions such as cholinergic neuron differentiation, control of stem cell pluripotency, bone & fat metabolism, mitogenesis of factor dependent cell lines & promotion of megakaryocyte production in vivo. Human and mouse LIF exhibit a 78% identity in its amino acid sequence.

    • Synonyms

      Leukemia Inhibitory Factor, Differentiation Inhibitory Activity, Cholinergic Differentiation Factor, Differentiation-Stimulating Factor, Hepatocyte-Stimulating Factor III, Differentiation-Inducing Factor, Melanoma-Derived LPL Inhibitor, Human Interleukin In DA Cells, D Factor, HILDA, MLPLI, Emfilermin, DIA, CDF, Leukemia inhibitory factor, LIF, Differentiation-stimulating factor, D factor, Melanoma-derived LPL inhibitor, MLPLI, Emfilermin.

    • Physical Appearance

      Sterile filtered colorless solution.

    • Stability

      Store at 4°C if entire vial will be used within 2-4 weeks. Store, frozen at -20°C for longer periods of time. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA). Avoid multiple freeze-thaw cycles.

    • Amino Acid Sequence

      ADPSPLPITP VNATCAIRHP CHNNLMNQIR SQLAQLNGSA NALFILYYTA QGEPFPNNLD KLCGPNVTDF PPFHANGTEK AKLVELYRIV VYLGTSLGNI TRDQKILNPS ALSLHSKLNA TADILRGLLS NVLCRLCSKY HVGHVDVTYG PDTSGKDVFQ KKKLGCQLLG KYKQIIAVLA
      QAFHHHHHH.

    ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

    Lif Human Sf9
  • View Data Sheet

    Description:

    Leukemia Inhibitory Factor Human Recombinant, His tag

    CDF, HILDA, D-FACTOR, Differentiation- stimulating factor, Melanoma-derived LPL inhibitor, MLPLI, Emfilermin, Leukemia inhibitory factor, LIF, DIA.

    Product # :

    CYT-1082

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    Description

    LIF Human Recombinant produced in E.Coli is a single, non-glycosylated, polypeptide chain (a.a 23-202) containing 189 amino acids including a 9 a.a N-terminal His tag. The total molecular mass is 20.9kDa (calculated).

    Source

    Escherichia Coli.

    Formulation

    LIF filtered (0.4 µm) and lyophilized from 0.5mg/ml solution in 20 mM Tris buffer, 20 mM NaCl and 5% w/v trehalose, pH 7.5.

    Purity

    Greater than 95.0% as determined by SDS-PAGE.

    More Info

    • Introduction

      Leukemia Inhibitory Factor also called LIF is a lymphoid factor that promotes long-term maintenance of embryonic stem cells by suppressing spontaneous differentiation. Leukemia Inhibitory Factor has several functions such as cholinergic neuron differentiation, control of stem cell pluripotency, bone & fat metabolism, mitogenesis of factor dependent cell lines & promotion of megakaryocyte production in vivo. Human and mouse LIF exhibit a 78% identity in its amino acid sequence.

    • Synonyms

      CDF, HILDA, D-FACTOR, Differentiation- stimulating factor, Melanoma-derived LPL inhibitor, MLPLI, Emfilermin, Leukemia inhibitory factor, LIF, DIA.

    • Physical Appearance

      Filtered White lyophilized (freeze-dried) powder.

    • Stability

      Store lyophilized protein at -20°C. Aliquot the product after reconstitution to avoid repeated freezing/thawing cycles. Reconstituted protein can be stored at 4°C for a limited period of time; it does not show any change after two weeks at 4°C.

    • Solubility

      It is recommended to add deionized water to prepare a working stock solution of approximately 0.5mg/ml and let the lyophilized pellet dissolve completely.

    • Amino Acid Sequence

      MKHHHHHHAS PLPITPVNAT CAIRHPCHNN LMNQIRSQLA QLNGSANALF ILYYTAQGEP FPNNLDKLCG PNVTDFPPFH ANGTEKAKLV ELYRIVVYLG TSLGNITRDQ KILNPSALSL HSKLNATADI LRGLLSNVLC RLCSKYHVGH VDVTYGPDTS GKDVFQKKKL GCQLLGKYKQ IIAVLAQAF.

    ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

    Lif Protein
  • View Data Sheet

    Description:

    Leukemia Inhibitory Factor, GST tag Human Recombinant

    D factor, MLPLI, HILDA, Emfilermin, Leukemia Inhibitory factor, Differentiation-stimulating factor, Melanoma-derived LPL inhibitor.

    Product # :

    CYT-001

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    Description

    LIF produced in E.Coli is a single, non-glycosylated polypeptide chain containing 415 amino acids (23-202a.a.) and having a molecular mass of 47.2kDa.LIF is fused to a 236 amino acid His-GST tag at N-terminus & purified by proprietary chromatographic techniques.

    Source

    Escherichia Coli.

    Formulation

    The LIF GST protein solution (1mg/1ml) is formulated in 20mM Tris-HCl buffer (pH 8.0) 1mM DTT, 50mM NaCl and 20% glycerol.

    Purity

    Greater than 90% as determined by SDS-PAGE.

    More Info

    • Introduction

      Leukemia inhibitory factor, is a pleiotropic cytokine which is expressed by numerous cells including activated T lymphocytes, monocytes, mast cells and neuronal cells. LIF takes part in the induction of hematopoietic differentiation in normal and myeloid leukemia cells, induction of neuronal cell differentiation, regulator of mesenchymal to epithelial conversion during kidney development, and is a key player in immune tolerance at the maternal-fetal interface.

    • Synonyms

      D factor, MLPLI, HILDA, Emfilermin, Leukemia Inhibitory factor, Differentiation-stimulating factor, Melanoma-derived LPL inhibitor.

    • Physical Appearance

      Sterile Filtered clear solution.

    • Stability

      Store at 4°C if entire vial will be used within 2-4 weeks. Store, frozen at -20°C for longer periods of time.Please avoid freeze thaw cycles.

    • Amino Acid Sequence

      MHHHHHHMSP ILGYWKIKGL VQPTRLLLEY LEEKYEEHLY ERDEGDKWRN KKFELGLEFP NLPYYIDGDV KLTQSMAIIR YIADKHNMLG GCPKERAEIS MLEGAVLDIR YGVSRIAYSK DFETLKVDFL SKLPEMLKMF EDRLCHKTYL NGDHVTHPDF MLYDALDVVL YMDPMCLDAF PKLVCFKKRI EAIPQIDKYL KSSKYIAWPL QGWQATFGGG DHPPKSDLVP RGSHMSPLPI TPVNATCAIR HPCHNNLMNQ IRSQLAQLNG SANALFILYY TAQGEPFPNN LDKLCGPNVT DFPPFHANGT EKAKLVELYR IVVYLGTSLG NITRDQKILN PSALSLHSKL NATADILRGL LSNVLCRLCS KYHVGHVDVT YGPDTSGKDV FQKKKLGCQL LGKYKQIIAV LAQAF

    ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

    Lif Human Gst

About Leukemia Inhibitory Factor [ LIF ]:

 
Mechanism
Leukemia Inhibitory Factor [ LIF ] is a protein that induces the terminal differentiation of myeloid leukemic cells, thus preventing the continued growth of these cells.
Essentially, myeloid leukemia is a form of blood cancer that can be life-threatening. Leukemia Inhibitory Factor, a naturally-occurring protein, is something we all have, and can help to force leukemic cells to differentiate rather than multiplying. Leukemia Inhibitory Factor is likely to be a key aspect that stops us all from developing myeloid leukemia. However, in certain cases -- and often fuelled by other genetic factors -- the supply of Leukemia Inhibitory Factor runs short, and cannot encourage all dangerous cells to differentiate. It is at this point that leukemia is diagnosed, and the threat to life develops.
Additionally, Leukemia Inhibitory Factor promotes growth and cell differentiation in a range of different target cells.

Function
There are multiple functions of Leukemia Inhibitory Factor -- from hereon referred to as LIF for the sake of brevity -- which are noted as follows…
● LIF restricts the growth of myeloid leukemia cells. Even if cells are cancerous, they cannot grow when there is sufficient LIF;
● LIF also assists with the metabolism of healthy bone marrow and matter;
● LIF supports neural development;
● Furthermore, muscle regeneration is improved when LIF quantities are sufficient;
● Embryogenesis also requires LIF
● LIF is used as a treatment for a wasting condition known as Cachexia. Cachexia is seen in patients with AIDS, cancer, and other serious illnesses; the presence of Cachexia is considered a severe risk factor for terminal prognosis.
● In patients with multiple sclerosis, LIF can help to tip the immune balance towards regulatory T-cells, improving prognosis and providing better condition management.

Interactions
● LIF binds to a specific receptor (LIFR-α), which leads to the activation of the JAK/STAT and MAPK cascades.
● LIF is often added to stem cell culture media, as an alternative to feeder cell culture. This avoids this limitation that feeder cells can present, caused by the fact that feeder cells only produce LIF on their surface. When LIF is directly added to the culture media, satisfactory results from treatment are more likely.

Thoughts For The Future
At present, LIF is understood, and used to good effect, but there is undoubtedly room for further investigation. LIF is primarily used in the treatment of myeloid leukemia; it remains to be see whether it can offer any hope in other blood cancers. Promising results have been shown in trials for its application on cutaneous melanoma.

Availability
ProSpec carries a range of LIF proteins, including human, mouse, and rat species. Adequate/relevant temperature control is guaranteed during the shipment process, so you can be confident of safe arrival; LIF can be purchased in quantities from 2µg, 10ug, 100ug, 500ug through to 1mg for use in research and development. We are confident you will be highly satisfied with our LIF offerings.