WO2014172805A1 - 具有增进的细胞素活性的组合物和其应用 - Google Patents

具有增进的细胞素活性的组合物和其应用 Download PDF

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WO2014172805A1
WO2014172805A1 PCT/CN2013/000481 CN2013000481W WO2014172805A1 WO 2014172805 A1 WO2014172805 A1 WO 2014172805A1 CN 2013000481 W CN2013000481 W CN 2013000481W WO 2014172805 A1 WO2014172805 A1 WO 2014172805A1
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chemokine
polypeptide
cytokine
composition
protein
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PCT/CN2013/000481
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French (fr)
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李德财
邱绣河
周宽基
沈瑞鸿
范怡馨
林佩桦
吴佩珊
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Lee Der-Tsai
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Priority to PCT/CN2013/000481 priority Critical patent/WO2014172805A1/zh
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K38/00Medicinal preparations containing peptides
    • A61K38/16Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • A61K38/17Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
    • A61K38/19Cytokines; Lymphokines; Interferons
    • A61K38/20Interleukins [IL]
    • A61K38/2013IL-2
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K38/00Medicinal preparations containing peptides
    • A61K38/16Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • A61K38/17Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
    • A61K38/1703Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K38/00Medicinal preparations containing peptides
    • A61K38/16Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • A61K38/17Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
    • A61K38/19Cytokines; Lymphokines; Interferons
    • A61K38/191Tumor necrosis factors [TNF], e.g. lymphotoxin [LT], i.e. TNF-beta
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07KPEPTIDES
    • C07K14/00Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • C07K14/435Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
    • C07K14/52Cytokines; Lymphokines; Interferons
    • C07K14/521Chemokines
    • C07K14/522Alpha-chemokines, e.g. NAP-2, ENA-78, GRO-alpha/MGSA/NAP-3, GRO-beta/MIP-2alpha, GRO-gamma/MIP-2beta, IP-10, GCP-2, MIG, PBSF, PF-4, KC
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07KPEPTIDES
    • C07K14/00Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • C07K14/435Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
    • C07K14/52Cytokines; Lymphokines; Interferons
    • C07K14/54Interleukins [IL]
    • C07K14/55IL-2
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07KPEPTIDES
    • C07K14/00Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • C07K14/435Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
    • C07K14/705Receptors; Cell surface antigens; Cell surface determinants
    • C07K14/70575NGF/TNF-superfamily, e.g. CD70, CD95L, CD153, CD154

Definitions

  • composition with enhanced cytokine activity and application thereof Composition with enhanced cytokine activity and application thereof
  • the present invention relates to a protein composition
  • a protein composition comprising a chemokine polypeptide and a cytokine polypeptide, wherein the chemokine polypeptide and the cytokine polypeptide share a common target cell, and have enhanced cytokine activity and enhanced chemotaxis Activity.
  • Cytokine is a group of proteins secreted by external stimulation of cells (only a few species of cytokines can be expressed in the cell membrane). Cytokines can be applied to target cells by cell or by blood transport. It has an effect and works at very low concentrations. It has a wide range of functions that promote the growth, differentiation or activation of target cells. Many cytokines can act on immune cells and participate in immune responses. Cytokines can be roughly classified into chemokines and interleukins depending on their structural roles.
  • interferons (interleukins), growth f actors, transforming growth factors, colony stimulating factors, tumor necrosis factors, and interferons.
  • Chemokines are a group of cytokines that can chemotaxis to attract white blood cells. They are usually small, positively charged, secretable proteins. Their main function is to attract immune cells to injured tissues or areas with pathogen infection. The white blood cell can then undergo phagocytosis or inflammation in this specific site to protect against pathogens.
  • the white blood cells attracted by chemokines may include innate immunity. granulocytes (neutrophils), monocytes / macrophages ⁇ 1 cells (monocytes / macrophages), natural killer cells (natural killer cells), dendritic cells (dendritic cells), and other leukocytes and the like, or belonging to a specific immune response
  • T lymphocytes T cells
  • B lymphocytes B cells
  • Most of the chemokines have four highly conserved cysteines (C) to form double bonds to stabilize their structure. According to the difference in the number of amino acids between the first two Cs and the presence or absence of the first C, Divided into CXC (or oc), CC (or ⁇ ), C (or ⁇ ) and CX 3 C four subgroups (subfamilies), stromal cell-derived factor-1 (SDF-1) It is classified in the CXC subgroup of chemokines, also known as CXC ligand 12 (CXCL12), and is found in many species, including humans, mice, and cats and amphibians in mammals.
  • CXC subgroup of chemokines also known as CXC ligand 12 (CXCL12)
  • SDF-1 Xenopus laevis (e/jopus) and zebrafish (Zebra fish) have found that there is little variation between different species and there is considerable conservation (Shirozu et al., Genomics 28, 495-500).
  • SDF-1 ⁇ and SDF- ⁇ ⁇ SDF-1 is widely distributed, including lymphoid tissues, kidneys, lungs, liver, brain, and muscles (Shirozu et al., Genomics 28, 495-500).
  • the receptor CXCR4 of SDF-1 in addition to its persistence in organs, can also be found in hematopoietic stem cells, endothelial cells, dendritic cells, B cells, and T cells, so these cells are attracted by SDF-1. Move to a site with a high concentration of chemokines (Bleul et al., Nature, 382: 829-833; Oberlin et al., Nature 382: 833-835; Read et al., Developmental and comparative immunology, 29, 143- 152).
  • CD40 ligand is a member of the tumor necrosis factor (TNF) superfamily, which has tumor necrosis and promotes leukocyte differentiation, proliferation, and apoptosis. function.
  • TNF tumor necrosis factor
  • transmembrane protein taking human CD40L as an example, the protein has a total of 261 amino acids, first amino acid 22 amino acids are intracellular regions, then 24 amino acids are transmembrane regions, and 215 amino acid sequences at the carboxy terminus are extracellular (extracellular, In the Exc region, the Exc region has a TNF homology (TNFh) region conserved at the carboxy terminus with a conserved TNF superfamily protein.
  • CD40L is mainly present as a transmembrane protein on the surface of activated CD4+ T cells, as well as CD8' T cells, basophils, eosinophils, mast cells, natural killer cells, platelets, and even It has also been found on the surface of cells expressing CD40.
  • the receptor for CD40L is CD40, which is distributed in B cells, dendritic cells, macrophages and other antigen-presenting cells.
  • antigen presenting cells APCs
  • APCs antigen presenting cells
  • these antigen-presenting cells can be activated by CD40L expressed by helper T cells, promoting the expression of a major histocompatibility complex class II (MHC-II) molecule and a B7 molecule.
  • MHC-II major histocompatibility complex class II
  • B7 B7 molecule.
  • CD40L activates the information transmission pathway by binding to CD40 on the target cells.
  • CD40L promotes B cell proliferation in B cells.
  • DHBV duck hepatitis B virus
  • HAV human immunodeficiency virus
  • Interleukin-2 is classified in the hematopoietin family, which includes some interleukins or other cytokines associated with cell growth.
  • the functions of IL-2 include: regulation of T cell maturation and differentiation, stimulation of B cell proliferation and antibody secretion, promotion of natural killer cell killing ability, activation of monocytes and macrophages, and the like.
  • IL-2 can also stimulate T cells and B cells to continue to express iiMHC, and can also stimulate natural killer cells to produce a variety of different cytokines, including TNF-oc, IFN- ⁇ and granulocyte/macrophage stimulating factor (granulocyte/macrophage). Colony stimulating factor, GM- CSF), etc. Studies have shown that IL-2 has anti-tumor and vaccine-enhancing effects.
  • a protein combination comprising a chemokine and a cytokine has enhanced cytokine activity and enhanced chemokine activity.
  • the present invention provides a composition
  • a composition comprising: a chemokine polypeptide which is a chemokine or a receptor binding domain thereof; and a cytokine polypeptide which is an interleukin, a TNF-superfamily cytokine or a receptor binding domain thereof; wherein the chemokine polypeptide and the cytokine polypeptide have a common target cell, and the composition has a more enhanced chemokine activity than when the chemokine polypeptide is administered alone, and The cytokine polypeptide is more enhanced in cytokine activity when administered alone.
  • the present invention also provides a method for enhancing the activity of a chemokine, comprising: co-administering a chemokine polypeptide with a cytokine, wherein: the chemokine polypeptide is a chemokine or a receptor binding domain thereof,
  • the cytokine polypeptide is an interleukin, a TNF-superfamily cytokine or a receptor binding domain thereof; and the chemokine polypeptide and the cytokine polypeptide have a common target cell.
  • the invention further provides a method for enhancing cytokine activity, comprising: co-administering a cytokine polypeptide with a chemokine polypeptide, wherein: the cytokine polypeptide is an interleukin, a TNF-superfamily cytokine or a receptor thereof The binding domain, the chemokine polypeptide is a chemokine or a receptor binding domain thereof; and the cytokine polypeptide and the chemokine polypeptide share a common target cell.
  • the chemokine is a CXC chemokine, a CC chemokine, a C-chemokine or a CX 3 C chemokine, preferably a CXC chemokine.
  • the chemokine is a stromal cell-derived factor (strona cel l-derived factor-1; SDF-1).
  • the cytokine polypeptide is an interleukin, a TNF-superfamily cytokine or a receptor binding domain thereof.
  • the polypeptide is a cytokine IL- 2, CD 4 0 TNFh homologous regions ligand (CD40 Hgand TNF homology doma in; CD40L TNFh) or receptor binding domain.
  • Figure 1 shows the results of SDS-PAGE and wes te ⁇ n blot analysis of purified single proteins.
  • Track 1 Labeled protein, expected size 21 kDa; lane 2: SDF-1, expected size 11 kDa; lane 3: IL-2, expected size 32 kDa; lane 4: CD40L ⁇ , expected size Is 33 kDa;
  • Figure 2 shows the situation of SDF-1 protein chemotactic PBMCs.
  • the cells are attracted by the chemotactic factors in the gel, which swims around the center colloid, and the cells appear cloud-like at low magnification. The more cells around the colloid, the greater the degree of chemotactic cells.
  • the degree of chemotactic cells of SDF-1 + 04()1 ⁇ or 30?- 1 + IL-2 protein combination was significantly greater than that of SDF-1 single protein;
  • FIG. 3 shows that CD40L-derived protein activates macrophage to produce NO activity.
  • CD40L TNFh SDF-1 + CD40L TNFh ; and control group: LPS (4 ⁇ g/ml) was used as a positive control group (+), tagged protein (250 nM) and culture medium as a negative control group (-). "Expresses significantly higher activity than individual single proteins ⁇ " ⁇ ⁇ 0. 01 );
  • FIG. 4 shows the results of the IL-2 protein-promoting lymphocytosis test.
  • the s t imulat ion index (SI) 0D of the test group / 0D cultured only by RPMI 1640.
  • concentration of SDF-1 + IL2 protein 0. 039 nM, 0. 156 nM, 2. 5 nM and 10 nM, the SI value was significantly higher than that of IL-2 protein alone ( ⁇ 0.05).
  • Figure 5 shows the effect of the IL-2 protein combination as a Newcastle disease (ND) vaccine adjuvant.
  • ND Newcastle disease
  • the combination of SDF-1 + IL-2 protein as a vaccine adjuvant significantly (p ⁇ 0.05) increased the HI antibody titer of chickens against ND virus;
  • Figure 6 shows that the combination of chemokine and cytokine protein as an adjuvant for infectious bronchitis (IB) vaccine can significantly promote antibody response.
  • IB vaccine control group C: vacc ine + SDF-1 (IB vaccine plus SDF-1 protein); D: vaccine + CD40L TNFh (IB vaccine plus CD40L TNFh protein); E: vaccine + IL 2 (IB vaccine plus IL-2 protein); F: vacc ine + SDF-1 + CD40L TNFh (IB vaccine combination SDF-1 and CD40 Fh protein combination); G: vaccine + SDF-1 + IL-2 (IB vaccine plus SDF-1 Combined with IL-2 protein).
  • the combination of SDF-1 and CD40L TNFh protein as a vaccine adjuvant vaccine + SDF-1 + CD40L TNFh
  • refers to the quantity of at least one (one or more).
  • chemokine polypeptide refers to a polypeptide which is a chemokine or a receptor binding domain thereof, wherein the chemokine includes, but is not limited to, CXC chemotaxis. , CC Chemokine, C Chemokine and CX3C Chemokine.
  • cytokine polypeptide refers to a polypeptide which is a cytokine or a receptor binding domain thereof, wherein cytokines include, but are not limited to, interleukin and TNF-superfamily cytokines.
  • chemokine activity refers to the activity that a chemotactic hormone possesses or can exert in an organism, including but not limited to chemotaxis of various immune cells (including monocytes, macrophages, T cells). , B cells, natural killer cells, dendritic cells and neutrophils, etc.).
  • cytokine activity refers to the activity that a cytokine possesses or can exert in an organism, including but not limited to promoting B cell proliferation, immunoglobulin type shift, antibody secretion; memory B cell Differentiate or avoid apoptosis; promote macrophage secretion of interleukin-12 to activate type 1 helper T cells or secrete chemokines; promote macrophage production of nitric oxide to enhance the ability to defend microorganisms; promote dendrites Cell maturation and activation; regulate T cell maturation and differentiation; promote the killing ability of natural killer cells, produce a variety of different cytokines; activate monocytes and macrophages; and stimulate T cells and B cells Continued table iiMHC and so on.
  • the present invention provides a composition
  • a composition comprising: a chemokine polypeptide which is a chemokine or a receptor binding domain thereof; and a cytokine polypeptide which is an interleukin, a TNF-superfamily cell Or a receptor binding domain thereof; wherein the chemokine polypeptide and the cytokine polypeptide have a common target cell, and the composition has enhanced chemokine activity when administered alone with the chemokine polypeptide, and Increased cytokine activity compared to when the cytokine polypeptide is administered alone.
  • the combination of the chemokine polypeptide and the cytokine polypeptide has a more enhanced activity than a single protein at an effective concentration.
  • the chemokine is a CXC chemokine.
  • the chemokine is a stromal cell (SDF-1).
  • the chemokine is IL-8.
  • the chemokine polypeptide has one of the amino acid sequences selected from the group consisting of: SEQ ID NO: 1, 4, 6, 8, 10 or homologs thereof and analogs ( Ana log ).
  • the cytokine polypeptide is an IL-2, CD40 ligand TNF homology region (CD40 l igand TNF homology doma in; CD40L TNFh ) or a receptor binding domain thereof.
  • the cytokine polypeptide has one of the amino groups selected from the group consisting of: SEQ ID NO: 12, 14, 16, 18, 20, 22, 24, 26, 28, 30 or Its homologs and analogs.
  • the protein combination of the invention has one of the following amino acid sequence combinations: SEQ ID NOs: 2 and 12; SEQ ID NOs: 2 and 22.
  • the invention provides a method of enhancing chemokine activity, comprising: administering a chemokine polypeptide in combination or in combination with a cytokine polypeptide, wherein: the chemokine polypeptide is a chemokine or a receptor thereof
  • the binding domain, the cytokine polypeptide is an interleukin, a TNF-superfamily cytokine or a receptor binding domain thereof; and the chemokine polypeptide and the cytokine polypeptide share a common target cell.
  • the present invention provides a method for enhancing cytokine activity, comprising: administering a cytokine polypeptide in combination with a chemokine polypeptide, wherein: the sputum cytokine polypeptide is an interleukin, a TNF-superfamily cell Or a receptor binding domain thereof, the chemokine polypeptide is a chemokine or a receptor binding domain thereof; and the cytokine polypeptide and the chemokine polypeptide share a common target cell. Row.
  • the methods of the invention are practiced in vitro, the cytokine polypeptide can be co-administered to the one or more target cells with the chemokine polypeptide.
  • the cytokine polypeptide and the chemokine polypeptide can be administered together or in combination to a subject in need thereof to provide enhanced cytokine activity or enhanced chemokine activity.
  • the individual includes, but is not limited to, humans, mammals or birds.
  • the chemokine is a CXC chemokine.
  • the chemokine is a stromal cell-derived factor (SDF-1).
  • the chemokine is IL-8.
  • the chemokine polypeptide has one of the amino acid sequences selected from the group consisting of: SEQ ID NO: 2, 4, 6, 8, 10 or homologs thereof and the like (analog).
  • the cytokine polypeptide is an IL-2, CD40 ligand TNF homology region (CD40 igand TNF homology doma in; CD40L TNFh ) or a receptor binding domain thereof.
  • the cytokine polypeptide has an amino acid sequence selected from the group consisting of: SEQ ID NO: 12, 14, 16, 18, 20, 22, 24, 26, 28, 30 and homologs thereof Things and analogues.
  • the protein combination of the invention has one of the following amino acid sequence combinations: SEQ ID NOs: 2 and 12; SEQ ID NOs: 2 and 22.
  • Example 1 Recombinant protein expression
  • Recombinant protein was expressed using an expression vector that previously constructed chicken SDF_1, IL-8, CD40L-derived protein and IL-2 (Wu Peishan, National Institute of Veterinary Microbiology, National Chung Hsin University, 2008, Chicken CD40L and Chemokine Research; Tsa i et a l. , Ta iwan Vet J 31: 38-45 ), wherein the chicken CD40L (chCD40L)-derived protein includes the TNF homology region of CD40L (TNF homology doma in of CD40L, CD40L TNFh : amino acid residue of pro -CD40L 136 - 272).
  • the constructed prokaryotic expression vector was transferred into the E.
  • col i expression strain BL21 (DE3), and the recombinant protein expression was induced with 0.5 mM IPTG, and the bacterial body removal culture solution was collected by centrifugation. All the cells were then resuspended in a binding buffer, and the cells were lysed using a high pressure cell lysometer (French Pressure Cel 1 Press, Thermo IEC, Needham, Height, MA, USA), and water-soluble after high-speed centrifugation. The protein will be located in the supernatant and purified on a nickel ion affinity column. The insoluble protein is located in the bottom mass after centrifugation.
  • the urea After treating the partially insoluble protein with 8 M urea, the urea will open the folded protein and dissolve it in the aqueous solution, then centrifuge at 12000 rpm for 30 minutes. The dialysis is carried out, the urea is slowly replaced, the protein can be refolded into the original configuration, and finally the protein is dissolved in a phosphate buffer (pH 7.3) containing 10% glycerol, after 0.22. After filtration through a ⁇ m filter, the protein concentration was determined using a BCA Protein Assay Kit (Pierce, Rockford, IL, USA) and stored at -20 °C. The protein was purified and identified as the correct protein by MALDI-TOF spectrometer.
  • Glue mix evenly, make the final acacia concentration 0.3%, then take the mixture 2 ⁇ 1 / hole in the center of the 48-well plate, put it in the refrigerator for five minutes to solidify the gelatin, and fix the cells in Within the scope of the glue. Then, 250 ⁇ M of the culture medium containing the respective concentrations of the test protein was added to each well, and cultured at 37 ° C overnight to observe.
  • the MEC value the better the chemotactic activity is.
  • the combination of SDF-1 with 0041 ⁇ 1) or -2 can lower the MEC value and improve Chemotaxis activity, its chemotactic activity is better than SDF-1 single protein (see Table 1). The higher the concentration of each protein, the better the chemotactic effect. At the same concentration, the combination of SDF-l+CD40LTNFh or SDF-1+IL-2 protein chemotactic cells was significantly greater than that of SDF-1 single protein (see Figure 2).
  • Example 3 CD40L TNfh protein activates macrophages to produce nitric oxide (NO) activity
  • the CD40L activity of the combination of chemokine and CD40L-derived protein CD40L TNFh was evaluated based on the characteristics of CD40L-activated macrophages producing NO.
  • Peripheral blood mononuclear cells were isolated and washed twice with PBS. The cells were adjusted to 2 X 107 ml with ⁇ I 1640 medium containing 10% FBS plus 125 ng/ml chicken IL-2 and 4 ⁇ g/ml LPS. Add 1 ml to each dish and add 1 ml of fresh medium 2 days later (add 125 ng/ml as well) Chicken IL-2 and 4 g/ml LPS), after five days of stimulation, monocytes differentiate into macrophages.
  • lymphocyte proliferation was promoted based on I L-2, and the activity of I L-2 after combination of chemokine and I L-2 was evaluated.
  • the activity of the acid phosphatase in the cell is proportional to the number of cells, and p_nitrophenyl phosphate (pNpp) is added to the color acceptor.
  • culture medium was cultured in RPMI 1640 medium containing 10% FBS with different concentrations of protein, 10 ⁇ g/ml ConA (positive control group), or 10 nM tagged protein (negative control group).
  • SI stimulation index
  • the combination of the chemotactic SDF-1 + IL-2 protein as a vaccine adjuvant was administered to chickens in combination with avian Newcastle disease (ND) live vaccine strain LaSota, and chicken blood was taken after administration of the vaccine.
  • the HI antibody titer was determined by hemagglutination inhibition test (HI test), and 25 ⁇ M of physiological saline (0.9% NaCl) was added to a 96-well U-bottom microplate per well, followed by 25 ⁇ 1 of the chicken serum to be tested was serially diluted 2 times, then 25 ⁇ ND ND virus solution containing 8 hemagglutination unit (HAU) was added to each well.
  • Chemotatin SDF-1 is combined with CD40L TNFh protein or combined with IL-2 protein as a vaccine adjuvant, and is administered to chickens in combination with infectious bronchitis (IB) virulent vaccine strain H120 (Intervet, Boxmeer, Netherlands). Only chicken blood was drawn 2 weeks after administration and tested using the IBV Ant ibody Test Kit (Idexx, MA, USA). The test serum was first diluted 500-fold with the sample dilution, 100 ⁇ l was added to the antigen-coated plate for 30 minutes at room temperature, then washed 5 times with ddH20, and then 100 ⁇ l of the HRP-conjugated secondary antibody was added.

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Abstract

本发明公开了一种具有增进的细胞素活性的组合物及其应用,所述组合物包含趋化素多肽,其为趋化素或其受体结合域;和细胞素多肽,其为TNF超家族细胞素或其受体结合域;其中该趋化素多肽和该细胞素多肽具有共同的标的细胞。本发明还公开了使用该组合物增进细胞素活性的方法。

Description

具有增进的细胞素活性的组合物和其应用 技术领域
本发明涉及一种蛋白组合物, 其包含趋化素多肽和细胞素多肽, 其中该趋化 素多肽和该细胞素多肽具有共同的标的细胞, 且其具有增进的细胞素活性和增进 的趋化素活性。 背景技术
细胞素( cytokine )是一群当细胞受外来刺激后所分泌出来(只有极少种细 胞素可表达于细胞膜)的蛋白, 细胞素自细胞产生后可以就近或经由血液的运输 而作用于标的细胞以产生影响, 而且在极低的浓度下就会发挥作用, 广泛具有可 促使标的细胞生长、 分化或活化等功能, 许多细胞素可作用在免疫细胞而参与免 疫反应。 细胞素可依其结构作用不同大致分为趋化素 (chemokines )、 介白素
( interleukins ), 生长因子 ( growth f actors ), 转形生长因子 ( transforming growth factors )、 群落生成刺激因子 ( colony stimulating factors )、 肿瘤坏 死因子 ( tumor necrosis factors )和干扰素 ( interferons )等。
趋化素(chemokines )是一群可趋化吸引白血球的细胞素,通常为分子量小、 带正电、 可分泌性的蛋白, 主要的功能是将免疫细胞吸引到受伤组织或是有病原 感染的区域, 白血球继而能够在此特定的部位进行吞噬反应 (phagocytosis )或 是引发发炎反应 ( infla誦 ation), 以抵御病原, 趋化素所吸引的白血球可能包 括属于先天性免疫力 ( innate immunity ) 的中性粒细胞( neutrophils )、 单核 球 /巨1^细胞 ( monocytes/ macrophages )、自然杀伤细胞 ( natural killer cells ), 树突细胞 ( dendritic cells ) 和其他白血球等, 或者是属于特异性免疫反应
( adaptive immunity ) 的 T (淋巴) 细胞 (T lymphocytes, T cells ) 或 B (淋 巴) 细胞(B lymphocytes, B cells), 在生物体的免疫系统中扮演相当重要的 角色。 趋化素大多拥有 4个高度保守的半胱胺酸 (cysteine, C)形成双疏键来 稳定其结构, 依据前两个 C之间的氨基酸数不同和第一个 C有无进行分类, 可分成 CXC (或称 oc )、 CC (或称 Ρ )、 C (或称 γ )与 CX3C四个亚群(subfamilies), 基 质细胞衍生因子 ( stromal cell-derived factor- 1, SDF-1 )被归类在趋化素的 CXC亚群里, 又称为 CXC配体 12 (CXCL12), 在许多的物种中均有发现, 包括哺乳 类动物中的人类、 小鼠和猫与两栖类动物中的非洲爪蟾( e/jopus) 以及斑马鱼 (zebra fish)都有发现, 在不同物种间变异不大, 有相当好的保守性( Shirozu et al. , Genomics 28, 495-500 )。 SDF-1基因在小鼠和人类中转录出的 mRNA会先 经过不同剪接( splicing),所以可发现有两种 SDF-1同型异构物 ( isoform ): SDF-1 α和 SDF-Ι β , SDF-1的分布极广, 包括淋巴组织、 肾、 肺、 肝、 脑和肌肉等都可 侦测的到 ( Shirozu et al. , Genomics 28, 495-500 )。 SDF-l的受体 CXCR4除了 长存于脏器中, 亦可见于造血干细胞( hematopoietic stem cells )、 内皮细胞、 树突细胞、 B细胞、 和 T细胞, 因此这些细胞会受 SDF-1吸引, 移动到该趋化素浓 度高的部位 (Bleul et al. , Nature, 382: 829-833; Oberlin et al. , Nature 382: 833-835; Read et al. , Developmental and comparative immunology, 29, 143-152 )。
CD40配体 ( CD40 ligand, CD40L ) 是属于肿瘤坏死因子 ( tumor necrosis factor, TNF)超家族( superfamily )里的一员, 此种细胞素具有使肿瘤坏死与 促进白血球细胞分化、 增生、 凋亡的功用。 CD40L蛋白合成时为一跨膜蛋白
( transmembrane protein), 以人类 CD40L为例, 蛋白共 261个氨基酸, 首先氨基 端 22个氨基酸为细胞内区域, 接着 24个氨基酸为穿膜区域, 靠羧基端 215个氨基 酸序列为细胞外 (extracellular, Exc ) 区域, Exc区域在羧基端具有一个 TNF超 家族蛋白均保守的 TNF同源 (TNF homology, TNFh ) 区域。 CD40L主要以跨膜蛋白 形式存在活化的 CD4+T细胞表面, 也存在 CD8'T细胞、 嗜碱性粒细胞(basophils )、 嗜酸性粒细胞(eosinophils )、 肥大细胞、 自然杀伤细胞、 血小板、 甚至在表达 CD40的细胞表面也有发现。
CD40L的受体为 CD40, 分布于 B细胞、 树突细胞, 巨噬细胞等抗原呈现细胞
(antigen presenting cells, APCs )表面。 在生理上这些抗原呈现细胞可受到 辅助性 T细胞(T helper cells )表达的 CD40L活化, 促进表达第二类主要组织相 容性复合体 ( major histocompatibility complex class II, MHC-II )分子与 B7分子以助抗原呈现。 CD40L通过与标的细胞上的 CD40结合而活化信息传递通路, 除了上述促进抗原呈现的作用 , CD40L在 B细胞可促进 B细胞增殖
( roliferation). 免疫球蛋白的类型碑舍变 ( isotype switching ), 抗体分泌、 记忆性 B细胞的分化或避免细胞凋亡; CD40L作用在巨噬细胞可加强其活化, 促进 其产生介白素 -12 (interleukin-12, IL-12) 以活化第一型辅助性 T细胞 ( T helper 1, Thl )或是分泌一些趋化素, 或是促进一氧化氮(nitric oxide, NO) 产生以提升巨噬细胞防卫微生物的能力; 作用在树突细胞可使其成熟活化, 活化 的树突细胞除了表达大量 MHC-II分子以助抗原呈现, 还会分泌 TNF-ot以及 IL-8、 巨1 ¾细胞炎性蛋白 l oc ( macrophage inflammatory protein 1 , ΜΙΡ-1 α )等 趋化素。
目前已有许多研究将 CD40L应用在疫苗佐剂或是治疗上,例如做为鸭 Β型肝炎 病毒 ( duck hepatitis B virus, DHBV )疫苗 ( Gares ei , Clin Vaccine Immunol 13, 958—965 )、 人类免疫缺陷病毒 ( human immunodeficiency virus, HIV) DNA 疫苗 (Stone et al. , J Virol 80, 1762-1772 ) 的佐剂或是治疗人类自体免疫 性疾病 ( Howard & Miller, Autoimmunity 37, 411-418 )等。
介白素 -2 ( interleukin- 2, IL - 2 )被归类在造血因子 ( hematopoietin ) 家族里, 这家族包括了一些与细胞生长有关的介白素或其他细胞素等。 IL-2的功 能包括: 调节 T细胞的成熟和分化、 刺激 B细胞的增殖和抗体分泌、 促进自然杀伤 细胞的毒杀能力、 活化单核细胞和巨噬细胞等。 IL- 2也可以刺激 T细胞与 B细胞持 续表 iiMHC, 也可以刺激自然杀伤细胞产生多种不同的细胞素, 包括 TNF- oc、 IFN- γ和粒细胞 /巨 细胞集落刺激因子 ( granulocyte/macrophage colony stimulating factor, GM- CSF )等。 研究显示 IL- 2有抗肿瘤和提升疫苗的作用。
然而, 本领域中仍然需要具较强活性的细胞素和趋化素。 发明内容
在本发明中意外地发现, 包含趋化素和细胞素的蛋白组合, 具有增进的细胞 素活性和增进的趋化素活性。
因此, 本发明提供一种组合物, 其包含: 趋化素多肽, 其为一趋化素或其受 体结合域; 和细胞素多肽,其为一介白素、一 TNF-超家族细胞素或其受体结合域; 其中该趋化素多肽和该细胞素多肽具有共同的标的细胞, 且该组合物具有相较于 该趋化素多肽单独施用时更增进的趋化素活性, 以及相较于该细胞素多肽单独施 用时更增进的细胞素活性。
本发明亦提供一种增进趋化素活性的方法, 其包含: 将趋化素多肽与细胞素 多舦共同施用, 其中: 该趋化素多肽为一趋化素或其受体结合域, 该细胞素多肽 为一介白素、 一 TNF-超家族细胞素或其受体结合域; 且该趋化素多肽和该细胞素 多肽具有共同的标的细胞。
本发明更提供一种增进细胞素活性的方法, 其包含: 将细胞素多肽与趋化素 多肽共同施用, 其中: 该细胞素多肽为一介白素、 一 TNF-超家族细胞素或其受体 结合域, 该趋化素多肽为一趋化素或其受体结合域; 且该细胞素多肽和该趋化素 多肽具有共同的标的细胞。
根据本发明, 该趋化素为一 CXC趋化素、 CC 趋化素、 C趋化素或 CX3C 趋化素, 较佳为 CXC趋化素。 根据本发明的具体实例, 该趋化素是基质细胞衍生因子 ( s troma l cel l- der ived factor-1; SDF-l )。
根据本发明, 该细胞素多肽系为一介白素、 一 TNF-超家族细胞素或其受体结 合域。 在本发明的具体实例中, 该细胞素多肽为 IL- 2、 CD40配体 TNFh同源区域 ( CD40 Hgand TNF homology doma in; CD40LTNFh )或其受体结合域。
本发明的各个具体实例的细节说明如后。本发明的其他特征将会经由以下各 个具体实例中的详细说明和申请专利范围而清楚呈现。
无须进一步的阐迷,相信本发明所属技术领域中的技术人员基于前述说明即 可利用本发明至最广的程度。 因此, 可以理解以下的说明仅仅是作为例示说明, 而非以任何方式限制其余的揭露内容。 附图说明
图l显示纯化单一蛋白的SDS-PAGE和wes teΓn blot分析结果。 第 1道: 标签蛋 白, 预期大小为 21 kDa; 第 2道: SDF-1 , 预期大小为 11 kDa; 第 3道: IL- 2, 预 期大小为 32 kDa; 第 4道: CD40L誦, 预期大小为 33 kDa;
图 2显示 SDF- 1蛋白趋化 PBMCs的情形。 细胞受到胶体外的趋化素吸引, 会自 中心胶体游向四周, 细胞在低放大倍率下呈现云雾状, 胶体周围细胞愈多代表趋 化细胞程度愈大。 在 2 μ Μ下, SDF- 1 + 04()1^ 或30?- 1 + IL- 2蛋白组合趋化细 胞程度明显大于 SDF-1单一蛋白;
图 3显示 CD40L衍生蛋白活化巨噬细胞产生 NO的活性。 CD40LTNFh; SDF-1 + CD40LTNFh; 和对照组: 以 LPS ( 4 μ g/ml )做为阳性对照组( + ), 标签蛋白 (250 nM )和培养液做为阴性对照组(-)。 "表示与个别单一蛋白相比有显著较高活性 ί "ρ < 0. 01 );
图 4显示 IL- 2蛋白促进淋巴球增生试验的结果。 增生指数 ( s t imulat ion index, SI ) = 试验组别的 0D/仅以 RPMI 1640培养的 0D。 SDF-1 + IL2蛋白组合 浓度在 0. 039 nM、 0. 156 nM, 2. 5 nM 与 10 nM 时, 其 SI值显著高于单独 IL- 2蛋 白 ( < 0. 05 );
图 5显示 IL- 2蛋白组合作为新城病 (ND )疫苗佐剂的效杲。 与疫苗对照组比 较, 接受 SDF- 1 + IL- 2蛋白组合作为疫苗佐剂 (vaccine + SDF-1 + IL-2 )可显 著( p < 0. 05 )提升鸡只对抗 ND病毒的 HI抗体效价;
图 6显示趋化素与细胞素蛋白组合作为传染性支气管炎(IB )疫苗佐剂, 可 显著促进抗体反应。 A: negat ive contro l ( P月性对照组); B: vacc ine control
( IB疫苗对照组); C: vacc ine + SDF-1 ( IB疫苗加 SDF- 1蛋白); D: vaccine + CD40LTNFh ( IB疫苗加 CD40LTNFh蛋白); E: vaccine + IL 2 ( IB疫苗加 IL- 2蛋白); F: vacc ine + SDF-1 + CD40LTNFh ( IB疫苗力口 SDF - 1 和 CD40 Fh蛋白组合); G: vaccine + SDF-1 + IL-2 ( IB疫苗加 SDF- 1 和 IL-2蛋白组合)。 与对照组别相较, 接受 SDF-1和 CD40LTNFh蛋白组合作为疫苗佐剂的组别 ( vaccine + SDF-1 + CD40LTNFh )
( p < 0. 001 )、 或是接受 SDF-l和 IL-2蛋白组合作为疫苗佐剂的组别 (vaccine + SDF-1 + IL-2 ) ( p < 0. 05 ) 均可显著提升抗 IB病毒抗体效价。 具体实施方式
除非另有指明 , 所有在此处使用的技术性和科学性术语具有本领域技术人员 一般所了解的意义。
本文所使用的「一』一词, 如未特别指明, 是指至少一个(一个或一个以上) 的数量。
本文所使用的 「趋化素多肽」 一词是指一多肽, 其为趋化素 (chemokine ) 或其受体结合域( receptor binding domain ), 其中该趋化素包括但不限于 CXC 趋化素、 CC 趋化素、 C趋化素和 CX3C趋化素。
本文所使用的 「细胞素多肽』一词是指一多肽, 其为细胞素 (cytokine )或 其受体结合域, 其中谊细胞素包括但不限于介白素和 TNF-超家族细胞素。
本文所使用的 「趋化素活性」一词是指趋化素于生物体内所具备或可发挥的 活性, 包括但不限于趋化多种免疫细胞(包括单核细胞、 巨噬细胞、 T细胞、 B细 胞、 自然杀伤细胞、 树突细胞和中性粒细胞等)。
本文所使用的 「细胞素活性」一词是指细胞素于生物体内所具备或可发挥的 活性, 包括但不限于促进 B细胞增殖、 免疫球蛋白的类型转变、 抗体分泌; 记忆 性 B细胞的分化或避免细胞凋亡; 促进巨噬细胞分泌介白素- 12以活化第一型辅助 性 T细胞或分泌趋化素; 促进巨噬细胞产生一氧化氮以提升防卫微生物的能力; 促进树突细胞成熟活化; 调节 T细胞的成熟和分化; 促进自然杀伤细胞的毒杀能 力、 产生多种不同的细胞素; 活化单核细胞和巨噬细胞; 和刺激 T细胞与 B细胞持 续表 iiMHC等。
在一方面, 本发明提供一种组合物, 其包含: 趋化素多肽, 其为一趋化素或 其受体结合域; 和细胞素多肽, 其为一介白素、 一 TNF-超家族细胞素或其受体结 合域; 其中该趋化素多肽和该细胞素多肽具有共同的标的细胞, 且该组合物具有 相较于该趋化素多肽单独施用时的增进的趋化素活性, 以及相较于该细胞素多肽 单独施用时的的增进的细胞素活性。
根据本发明, 该趋化素多肽和该细胞素多肽组合在有效浓度下较单一蛋白具 更增进的活性。
在本发明一具体实施例中, 该趋化素为一 CXC趋化素。 在一特定实例中, 该 趋化素为基质细胞^"生因子(SDF-1 )。 在另一特定实例中, 该趋化素为 IL-8。
在本发明的部分具体实施例中, 该趋化素多肽具有选自下列的氨基酸序列之 一: SEQ ID NO: 1、 4、 6、 8、 10或其同源物(homolog )和类似物( ana log )。
在本发明部分具体实施例中, 该细胞素多肽为 IL- 2、 CD40配体 TNF同源区域 ( CD40 l igand TNF homo logy doma in; CD40LTNFh )或其受体结合域。
在本发明部分具体实施例中, 该细胞素多肽系具有选自下列的氨基^ ^列之 一: SEQ ID NO: 12、 14、 16、 18、 20、 22、 24、 26、 28、 30或其同源物和类似 物。
在本发明特定具体实施例中, 本发明的蛋白组合具有选自下列的氨基酸序列 組合之一: SEQ ID NO: 2和 12; SEQ ID NO: 2和 22。
另一方面, 本发明提供一种增进趋化素活性的方法, 其包含: 将趋化素多肽 与细胞素多肽共同或组合施用,其中:该趋化素多肽为一趋化素或其受体结合域, 该细胞素多肽为一介白素、 一 TNF-超家族细胞素或其受体结合域; 且该趋化素多 肽和该细胞素多肽具有共同的标的细胞。
又一方面, 本发明提供一种增进细胞素活性的方法, 其包含: 将细胞素多肽 与趋化素多肽共同或组合施用, 其中: 铉细胞素多肽为一介白素、 一 TNF-超家族 细胞素或其受体结合域, 该趋化素多肽为一趋化素或其受体结合域; 且该细胞素 多肽和该趋化素多肽具有共同的标的细胞。 行。 于活体外实施本发明的方法时, 可将细胞素多肽与趋化素多肽共同施用至其 一或多标的细胞。 于活体内实施本发明的方法时, 可将细胞素多肽与趋化素多肽 共同或组合投予至一有需要的个体, 以提供增进的细胞素活性或增进的趋化素活 性。 该个体包括但不限于人类、 哺乳类或禽类。
在本发明一具体实施例中, 该趋化素系为一 CXC趋化素。 在一特定实例中, 该趋化素为基质细胞衍生因子 (SDF-1 )。 在另一特定实例中, 该趋化素为 IL- 8。
在本发明的部分具体实施例中,该趋化素多肽系具有选自下列的氨基酸序列 之一: SEQ ID NO: 2、 4、 6、 8、 10或其同源物 (homolog )和类似物 (analog )。
在本发明部分具体实施例中, 该细胞素多肽为 IL-2、 CD40配体 TNF同源区域 ( CD40 l igand TNF homology doma in; CD40LTNFh )或其受体结合域。
在本发明部分具体实施例中, 该细胞素多肽具有选自下列的氨基酸序列之 —: SEQ ID NO: 12、 14、 16、 18、 20、 22、 24、 26、 28、 30和其同源物和类似 物。
在本发明特定具体实施例中,本发明的蛋白组合具有选自下列的氨基酸序列 组合之一: SEQ ID NO: 2和 12; SEQ ID NO: 2和 22。
以下实例仅作为说明, 而非作为本发明的限制。 实施例 1: 重组蛋白表达
使用先前已构筑鸡 SDF_1、 IL- 8、 CD40L衍生蛋白和 IL-2的表达载体来表达重 组蛋白 (吴佩珊, 国立中兴大学兽医微生物学研究所硕士论文 2008 , 鸡 CD40L及 趋化素之研究; Tsa i et a l. , Ta iwan Vet J 31: 38-45 ), 其中鸡 CD40L ( chCD40L) 衍生蛋白包括 CD40L的 TNF同源区域 ( TNF homology doma in of CD40L, CD40LTNFh: 原 CD40L的氨基酸残基 136- 272 )。 将构筑好的原核表达栽体转入 E. col i表达型菌 株 BL21 ( DE3 ), 以 0. 5 mM IPTG诱导重组蛋白表达, 以离心的方式收取菌体去除 培养液。 所有的菌体接着以结合緩冲液(binding buffer ) 重悬, 使用高压细胞 裂解仪 ( French Pressure Cel 1 Press, Thermo IEC, Needham, He ight, MA, USA ) 裂解菌体, 高速离心的后水溶性的蛋白会位于上清液, 以镍离子亲和管柱进行纯 化。 不可溶蛋白则会位于离心后的底部团块中, 以 8 M尿素处理此部分不可溶蛋 白后, 尿素会将蛋白质的折叠打开使其溶解于水溶液中, 接着以 12000 rpm 离心 30分钟取其上清液进行透析, 将尿素慢慢置换出来, 使蛋白能再折叠成原来的构 形, 最后将蛋白质溶解于含有 10 %甘油的磷酸盐緩冲液(pH 7. 3 ) 中, 经 0. 22 μ m滤膜过滤后, 以 BCA蛋白分析试剂盒( Pierce, Rockford, IL, USA )测定蛋白 浓度, 储存在 -20 °C。 蛋白纯化后经 MALDI- T0F质讲仪分析鉴定为正确的蛋白, SDS- PAGE与 wes tern Mot (—级抗体为 ant i- Hi s小鼠 IgG抗体, 二级抗体为 AP -接 合山羊抗小鼠 IgG抗体, 呈色剂为 NBT/BCIP)分析显示所表达的鸡重组蛋白符合 预期大小, 其中栽体编码的标签蛋白为 21 kDa、 SDF- 1为 11 kDa、 IL-2为 32 kDa、 CD40LTNFh为 33 kDa (参见图 1 )。 实施例 2: 趋化活性试验 ( chemotactic activity assay )
评估趋化素 (SDF-1 ) 与 CD40L衍生蛋白 CD40LTNFh或 IL 2組合后的趋化活性, 以 Histopaque 1077 ( Sigma, Saint Louis, Mo, USA ) 分离周边血液单核细胞 ( peripheral blood mononuclear eel Is, PBMCs ), 以 PBS冲洗两次后, 再以含 10 % 胎牛血清( fetal bovine serum, FBS ) ^jRPMI 1640 (Gibco, Grand Island, NY, USA) 悬浮后加入融溶状态的 0.6 %洋菜胶, 混合均匀, 使最后洋菜胶的浓度 为 0.3 %, 接着取此混合液 2 μ 1/孔点在 48孔盘的中央, 放入冰箱五分钟使洋菜 胶凝固, 而将细胞固定在胶的范围内。 接着每孔加入 250 μΐ含有各浓度待测蛋 白的培养液, 于 37 'C培养隔夜后观察。
依据各蛋白发挥趋化活性的最低有效浓度 ( minimal effective concentration, MEC ), MEC值愈小即趋化活性愈佳, SDF-1无论与 0401^1)或 -2 组合均可降低 MEC值, 提高趋化活性, 其趋化活性比 SDF-1单一蛋白更好(参见表 1 )。 各蛋白浓度愈高, 趋化效果愈佳, 在相同浓度下, SDF- l+CD40LTNFh或 SDF- 1+IL- 2蛋白组合趋化细胞程度明显大于 SDF-1单一蛋白 (参见图 2 )。
表 1: 趋化活性的最低有效浓度 ( MEC )
蛋白名称 最低有效浓度
A SDF-1 125 nM
B SDF-l+CD40LTNFh 62.5 nM
C SDF-1+IL-2 62.5 nM 实施例 3: CD40LTNfh蛋白活化巨噬细胞产生一氧化氮(nitric oxide, NO)活 性分析
基于 CD40L可活化巨噬细胞产生 NO的特性, 评估趋化素与 CD40L衍生蛋白 CD40LTNFh组合后的 CD40L活性。 分离周边血液单核细胞, 以 PBS沖洗两次后, 以含 10 % FBS的匪 I 1640培养液外加 125 ng/ml 鸡 IL- 2和 4 μ g/ml LPS调整细胞至 2 X 107ml, 24孔盘中各放入 1 ml,两天后外加新鲜培养液 1 ml(同样添加 125 ng/ml 鸡 IL- 2和 4 g/ml LPS), 五天后完成刺激, 单核细胞会分化成巨噬细胞。 以 PBS 冲洗三次去除悬浮细胞后加入不同浓度的 CD40LTNFh或其蛋白组合, 并以培养液、 栽体表达的标签蛋白和加入 4 μg/m\ LPS的培养液分别做为阴性和阳性对照组, 培养 48小时后取 50 μ 1利用商业可获得的试剂盒 (Griess Reagent System; Promega, Madison, WI, USA )测定培养液中亚硝酸(由 NO转化) 浓度。 结果显 示 SDF1 + CD40LTNFh蛋白组合活化巨噬细胞产生 NO的活性显著较单一 CD40L™蛋白 更好( 0.8-180 n , p < 0.01 ) (参见图 3 )。 实施例 4: IL- 2蛋白促进淋巴球增生的活性
基于 I L-2可促进淋巴球增生的活性, 评估趋化素与 I L-2组合后的 I L-2活性。 利用细胞内酸性去磷酸酶(acid phosphatase) 的活性与细胞数成正比, 加入呈 色受质对硝'基磷酸苯酯( p_nitrophenyl phosphate, pNpp )。 分离周边血液单核 细胞后, 以含 10% FBS的 RPMI 1640培养液加上不同浓度的蛋白、 10 μ g/ml ConA (阳性对照组)、 或 10 nM 标签蛋白 (阴性对照组), 培养于 96孔盘当中, 每孔细 胞量为 2 χ 105, 培养三天后 3000 rpm离心 10分钟, 接着去掉培养液, 每孔加入 100 μ ΐ的呈色试剂 (0.1 M sodium acetate, pH 5.5, 0.1% Triton X-100, and 10 mM pNpp), 37 。( 培养两个小时, 接着加入 10 μ 1 I N NaOH终止反应, 以波长 405 nm读取吸光值并计算增生指数( stimulation index, SI ), 其中 SI = 试验组别 的 0D/仅以 RPMI 1640培养的 0D。 结果显示 SDF-1 + IL2蛋白组合于 0.039 nM、 0.156 nM、 2.5 nM, 与 10 nM时促进增生的活性均显著高于 IL- 2 (p< 0.05 ), 此结果显 示组合趋化素后 IL-2活性显著提高 (参见图 4)。 实施例 5:趋化素与 IL- 2蛋白组合作为禽类新城病(Newcastle disease, ND) 疫苗佐剂促进疫苗引发的抗体反应
以趋化素 SDF- 1 + IL- 2蛋白组合作为疫苗佐剂 (vaccine adjuvant ), 配合 禽类新城病 (Newcastle disease, ND ) 活毒疫苗株 LaSota施用于鸡只, 于施用 疫苗后抽取鸡血。 以血球凝集抑制试验( hemagglutination inhibition test, HI test ) 测定其 HI抗体效价, 于每孔 96孔 U型底微量盘 ( 96 well microplate )加 入 25 μ ΐ生理食盐水(0.9% NaCl ), 继而加入 25 μ 1待测鸡血清做 2倍系列稀释, 之后每孔加入 25 μ ΐ 含 8 hemagglutination unit (HAU) 的 ND病毒液, 作用 15分 钟后加入 50 μ ΐ 0.7 % (ν/ν) 的鸡只红血球, 最后静置 40分钟判读其抗体抑制 病毒凝集血球之 HI效价。 结果显示, 与疫苗对照组比较, 接受 SDF-l + IL-2蛋白 组合作为疫苗佐剂组别 (vaccine + SDF-1 + IL-2 )可显著( p < 0.05 )提升鸡 只对抗 ND病毒的 HI抗体效价(参见图 5 )。 实施例 6: 趋化素与细胞素蛋白组合作为禽类传染性支气管炎( infectious bronchitis, IB )疫苗佐剂促进抗体免疫反应
趋化素 SDF- 1与 CD40LTNFh蛋白组合或与 IL-2蛋白组合作为疫苗佐剂,配合禽类 传染性支气管炎 ( infectious bronchitis, IB) 活毒疫苗株 H120 ( Intervet, Boxmeer, Netherlands )施用于鸡只,于施用 2周后后抽取鸡血,使用 IBV Ant ibody Test Kit (Idexx, MA, U.S. A.) 测试。 先将待测血清以样本稀释液 500倍稀释, 取 100 μ 1加至 antigen- coated plate中于室温下作用 30分钟, 接着以 ddH20清洗 5次, 再加入 100 μ 1偶联 HRP的二抗于室温下作用 30分钟, ddH20清洗 5次后加入 100 μ ΐ呈色试剂 (TMB substrate solution)作用 15分 4中, 最后加入 100 μ ΐ的 终止反应溶液, 以波长 405 nm读取吸光值并依据阳性对照血清的读值换算抗体效 价。 与对照组别相较, 接受 SDF- 1与 00401^1]蛋白组合作为疫苗佐剂的组别 (vaccine + SDF-1 + CD40LTNFh) ( p < 0.001 ) 与接受 SDF- 1与 IL-2蛋白组合作为 疫苗佐剂的组别 (vaccine + SDF-1 + 11-2) ( p < 0.05 ) 均可显著提升抗 IB病毒 抗体效价(参见图 6)。

Claims

权利要求
1. 一种组合物, 其包含:
趋化素多肽, 其为一趋化素或其受体结合域; 和
细胞素多肽, 其为一介白素、 一 TNF-超家族细胞素或其受体结合域; 其中该趋化素多肽和该细胞素多肽具有共同的标的细胞, 且谅组合物具有相 较于该趋化素多肽单独施用时更增进的趋化素活性, 以及相较于该细胞素多肽单 独施用时更增进的细胞素活性。
2. 根据权利要求 1所述的组合物, 其中该趋化素选自于由 CXC趋化素、 CC 趋 化素、 C趋化素和 CX3C 趋化素所组成的群。
3. 根据权利要求 2所述的组合物, 其中该趋化素为 CXC趋化素。
4. 根据权利要求 3所述的组合物, 其中该趋化素为基质细胞衍生因子。
5. 根据权利要求 1所述的组合物, 其中该趋化素多肽具有选自下列的氨基酸 序列之一: SEQ ID NO: 2、 4、 6、 8、 10或其同源物和类似物。
6. 根据权利要求 1所述的组合物, 其中该细胞素多肽为 IL- 2、 CD40配体或其 受体结合域。
7. 根据权利要求 1所述的组合物, 其中该细胞素多肽具有选自下列的氨基酸 序列之一: SEQ ID NO: 12、 14、 16、 18、 20、 11、 24、 26、 28、 30或其同源物 和类似物。
8. 根据权利要求 1所述的组合物, 其中该趋化素多肽具有 SEQ ID NO: 2的序 列, 且其中该细胞素多肽具有 SEQ ID NO: 12或 22的序列。
9. 根据权利要求 1所述的组合物, 其为医药组合物, 且更包含一医药上可接 受的载剂。
10. 权利要求 1所述的组合物在制备疫苗佐剂中的应用。
11. 一种增进趋化素活性的方法, 其包含:
将趋化素多舦与细胞素多肽共同施用, 其中:
该趋化素多肽为一趋化素或其受体结合域, 该细胞素多肽为一介白素、 一
TNF-超家族细胞素或其受体结合域; 且
该趋化素多肽和该细胞素多肽具有共同的标的细胞。
12. 一种增进细胞素活性的方法, 其包含:
将细胞素多肽与趋化素多肽共同施用, 其中:
该细胞素多肽为一介白素、 一 TNF-超家族细胞素或其受体结合域, 该趋化素 多肽为一趋化素或其受体结合域; 且
该细胞素多肽和该趋化素多肽具有共同的标的细胞。
1 3. 根据权利要求 1 1或 12所述的方法, 其中该趋化素选自于由 CXC趋化素、 CC 趋化素、 C趋化素和 CX3C 趋化素所组成的群。
14. 根据权利要求 1 3所述的方法, 其中该趋化素为基质细胞衍生因子。
15. 根据权利要求 11或 12所述的方法, 其中该趋化素多肽具有选自下列的氨 基酸序列之一: SEQ ID NO: 2、 4、 6、 8、 1 0或其同源物和类似物。
16. 根据权利要求 11或 12所述的方法, 其中该细胞素多肽为 IL- 2、 CD40配体 或其受体结合域。
17. 根据权利要求 11或 12所述的方法, 其中该细胞素多肽具有选自下列的氨 基酸序列之一: SEQ ID NO: 12、 14、 16、 18、 20、 22、 24、 26、 28、 30或其同 源物和类似物。
18. 根据权利要求 1 1或 12所述的方法, 其中该趋化素多肽具有 SEQ ID NO: 2 的序列, 且其中该细胞素多肽具有 SEQ ID NO: 12或 22的序列。
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Citations (1)

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Publication number Priority date Publication date Assignee Title
CN1531440A (zh) * 2001-05-09 2004-09-22 - 通过调节Th1/Th2比例预防或治疗Th1和Th2细胞相关疾病的药物组合物

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CN1531440A (zh) * 2001-05-09 2004-09-22 - 通过调节Th1/Th2比例预防或治疗Th1和Th2细胞相关疾病的药物组合物

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