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Lee E, de Paula MN, Baek S, Ta HKK, Nguyen MT, Jeong TH, Kim CJ, Jang YJ, Choe H. Novel Bacterial Production of Two Different Bioactive Forms of Human Stem-Cell Factor. Int J Mol Sci 2021; 22:ijms22126361. [PMID: 34198626 PMCID: PMC8232154 DOI: 10.3390/ijms22126361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 06/04/2021] [Accepted: 06/09/2021] [Indexed: 11/30/2022] Open
Abstract
Human stem-cell factor (hSCF) stimulates the survival, proliferation, and differentiation of hematopoietic cells by binding to the c-Kit receptor. Various applications of hSCF require the efficient and reliable production of hSCF. hSCF exists in three forms: as two membrane-spanning proteins hSCF248 and hSCF229 and truncated soluble N-terminal protein hSCF164. hSCF164 is known to be insoluble when expressed in Escherichia coli cytoplasm, requiring a complex refolding procedure. The activity of hSCF248 has never been studied. Here, we investigated novel production methods for recombinant hSCF164 and hSCF248 without the refolding process. To increase the solubility of hSCF164, maltose-binding protein (MBP) and protein disulfide isomerase b’a’ domain (PDIb’a’) tags were attached to the N-terminus of hSCF164. These fusion proteins were overexpressed in soluble form in the Origami 2(DE3) E. coli strain. These solubilization effects were enhanced at a low temperature. His-hSCF248, the poly-His tagged form of hSCF248, was expressed in a highly soluble form without a solubilization tag protein, which was unexpected because His-hSCF248 contains a transmembrane domain. hSCF164 was purified using affinity and ion-exchange chromatography, and His-hSCF248 was purified by ion-exchange and gel filtration chromatography. The purified proteins stimulated the proliferation of TF-1 cells. Interestingly, the EC50 value of His-hSCF248 was 1 pg/mL, 100-fold lower than 9 ng/mL hSCF164. Additionally, His-hSCF248 decreased the doubling time, increased the proportion of S and G2/M stages in the cell cycle, and increased the c-Myc expression at a 1000-fold lower concentration than hSCF164. In conclusion, His-hSCF248 was expressed in a soluble form in E. coli and had stronger activity than hSCF164. The molecular chaperone, MBP, enabled the soluble overexpression of hSCF164.
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Affiliation(s)
- Eunyoung Lee
- Department of Physiology, Bio-Medical Institute of Technology, University of Ulsan College of Medicine, Asan Medical Center, Seoul 05505, Korea; (E.L.); (M.N.d.P.); (S.B.); (H.K.K.T.); (M.T.N.); (T.-H.J.); (Y.J.J.)
| | - Michelle Novais de Paula
- Department of Physiology, Bio-Medical Institute of Technology, University of Ulsan College of Medicine, Asan Medical Center, Seoul 05505, Korea; (E.L.); (M.N.d.P.); (S.B.); (H.K.K.T.); (M.T.N.); (T.-H.J.); (Y.J.J.)
| | - Sangki Baek
- Department of Physiology, Bio-Medical Institute of Technology, University of Ulsan College of Medicine, Asan Medical Center, Seoul 05505, Korea; (E.L.); (M.N.d.P.); (S.B.); (H.K.K.T.); (M.T.N.); (T.-H.J.); (Y.J.J.)
| | - Huynh Kim Khanh Ta
- Department of Physiology, Bio-Medical Institute of Technology, University of Ulsan College of Medicine, Asan Medical Center, Seoul 05505, Korea; (E.L.); (M.N.d.P.); (S.B.); (H.K.K.T.); (M.T.N.); (T.-H.J.); (Y.J.J.)
| | - Minh Tan Nguyen
- Department of Physiology, Bio-Medical Institute of Technology, University of Ulsan College of Medicine, Asan Medical Center, Seoul 05505, Korea; (E.L.); (M.N.d.P.); (S.B.); (H.K.K.T.); (M.T.N.); (T.-H.J.); (Y.J.J.)
| | - Taeck-Hyun Jeong
- Department of Physiology, Bio-Medical Institute of Technology, University of Ulsan College of Medicine, Asan Medical Center, Seoul 05505, Korea; (E.L.); (M.N.d.P.); (S.B.); (H.K.K.T.); (M.T.N.); (T.-H.J.); (Y.J.J.)
| | - Chong Jai Kim
- Department of Pathology, Asan-Minnesota Institute for Innovating Transplantation, University of Ulsan College of Medicine, Asan Medical Center, Seoul 05505, Korea;
| | - Yeon Jin Jang
- Department of Physiology, Bio-Medical Institute of Technology, University of Ulsan College of Medicine, Asan Medical Center, Seoul 05505, Korea; (E.L.); (M.N.d.P.); (S.B.); (H.K.K.T.); (M.T.N.); (T.-H.J.); (Y.J.J.)
| | - Han Choe
- Department of Physiology, Bio-Medical Institute of Technology, University of Ulsan College of Medicine, Asan Medical Center, Seoul 05505, Korea; (E.L.); (M.N.d.P.); (S.B.); (H.K.K.T.); (M.T.N.); (T.-H.J.); (Y.J.J.)
- Correspondence: ; Tel.: +82-2-3010-4292; Fax: +82-2-3010-8148
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Yasinska IM, Calzolai L, Raap U, Hussain R, Siligardi G, Sumbayev VV, Gibbs BF. Targeting of Basophil and Mast Cell Pro-Allergic Reactivity Using Functionalised Gold Nanoparticles. Front Pharmacol 2019; 10:333. [PMID: 30984005 PMCID: PMC6449467 DOI: 10.3389/fphar.2019.00333] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Accepted: 03/19/2019] [Indexed: 01/09/2023] Open
Abstract
Calcineurin inhibitors potentially prevent pro-allergic mediator release from basophils and mast cells but are rarely used systemically due to ubiquitous expressions of target signaling proteins. However, specific targeting of allergic effector cells with these inhibitors could circumvent unwanted side effects. We recently demonstrated the biocompatibility of gold nanoparticles (AuNPs) as a platform for non-toxic delivery of signaling inhibitors due to unique physicochemical properties of these nanomaterials. Since AuNPs can be conjugated with both anti-allergic drugs and antibodies or other proteins that specifically recognize basophils and mast cells, our aims were to assess specific targeting of allergic effector cell function using AuNPs conjugated with the calcineurin inhibitor ascomycin. Purified human basophils and LAD2 human mast cells were used for investigations with AuNPs conjugated either to CD203c antibodies or containing stem cell factor (SCF), respectively, which were amine-coupled to acidic groups of reduced glutathione (GSH). GSH was also used as a spacer for immobilization of ascomycin on the gold surface. AuNPs conjugated with anti-CD203c and ascomycin strikingly blocked IgE-dependent degranulation of both purified basophils and those present in mixed leukocyte preparations, suggesting specific targeting of these cells. In contrast, LAD2 mast cell responses were not inhibited using anti-CD203c-containing nanoconjugates but were when the conjugates contained SCF. Successful targeting of allergic effector cells using gold nanoconjugates indicates that this technology may have therapeutic potential for the treatment of allergies by specifically delivering highly effective signaling inhibitors with reduced side effects.
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Affiliation(s)
- Inna M Yasinska
- Medway School of Pharmacy, Universities of Kent and Greenwich, Chatham Maritime, United Kingdom
| | - Luigi Calzolai
- European Commission, Joint Research Centre, Ispra, Italy
| | - Ulrike Raap
- Division of Experimental Allergology and Immunodermatology, University of Oldenburg, Oldenburg, Germany
| | | | | | - Vadim V Sumbayev
- Medway School of Pharmacy, Universities of Kent and Greenwich, Chatham Maritime, United Kingdom
| | - Bernhard F Gibbs
- Medway School of Pharmacy, Universities of Kent and Greenwich, Chatham Maritime, United Kingdom.,Division of Experimental Allergology and Immunodermatology, University of Oldenburg, Oldenburg, Germany
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Sumbayev VV, Gonçalves Silva I, Blackburn J, Gibbs BF, Yasinska IM, Garrett MD, Tonevitsky AG, Ushkaryov YA. Expression of functional neuronal receptor latrophilin 1 in human acute myeloid leukaemia cells. Oncotarget 2018; 7:45575-45583. [PMID: 27322212 PMCID: PMC5216743 DOI: 10.18632/oncotarget.10039] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Accepted: 05/29/2016] [Indexed: 12/04/2022] Open
Abstract
Acute myeloid leukaemia (AML) is a blood cancer affecting cells of myeloid lineage. It is characterised by rapid growth of malignant leukocytes that accumulate in the bone marrow and suppress normal haematopoiesis. This systemic disease remains a serious medical burden worldwide. Characterisation of protein antigens specifically expressed by malignant cells, but not by healthy leukocytes, is vital for the diagnostics and targeted treatment of AML. Here we report, for the first time, that the neuronal receptor latrophilin-1 is expressed in human monocytic leukaemia cell lines and in primary human AML cells. However, it is absent in healthy leukocytes. Latrophilin-1 is functional in leukaemia cells tested, and its biosynthesis is controlled through the mammalian target of rapamycin (mTOR), a master regulator of myeloid cell translational pathways. Our findings demonstrate that latrophilin-1 could be considered as a novel biomarker of human AML, which offers potential new avenues for AML diagnosis and treatment.
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Affiliation(s)
- Vadim V Sumbayev
- School of Pharmacy, University of Kent, Chatham, Kent, ME4 4TB, United Kingdom
| | | | - Jennifer Blackburn
- School of Pharmacy, University of Kent, Chatham, Kent, ME4 4TB, United Kingdom
| | - Bernhard F Gibbs
- School of Pharmacy, University of Kent, Chatham, Kent, ME4 4TB, United Kingdom
| | - Inna M Yasinska
- School of Pharmacy, University of Kent, Chatham, Kent, ME4 4TB, United Kingdom
| | - Michelle D Garrett
- School of Biosciences, University of Kent, Canterbury, Kent, CT2 7NJ, United Kingdom
| | - Alexander G Tonevitsky
- Hertsen Moscow Oncology Research Institute, Branch of The National Medical Research Radiological Center, Ministry of Health of The Russian Federation, 125284, Moscow, Russian Federation
| | - Yuri A Ushkaryov
- School of Pharmacy, University of Kent, Chatham, Kent, ME4 4TB, United Kingdom
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Gonçalves Silva I, Gibbs BF, Bardelli M, Varani L, Sumbayev VV. Differential expression and biochemical activity of the immune receptor Tim-3 in healthy and malignant human myeloid cells. Oncotarget 2016; 6:33823-33. [PMID: 26413815 PMCID: PMC4741805 DOI: 10.18632/oncotarget.5257] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Accepted: 09/04/2015] [Indexed: 01/21/2023] Open
Abstract
The T cell immunoglobulin and mucin domain 3 (Tim-3) is a plasma membrane-associated receptor which is involved in a variety of biological responses in human immune cells. It is highly expressed in most acute myeloid leukaemia (AML) cells and therefore may serve as a possible target for AML therapy. However, its biochemical activities in primary human AML cells remain unclear. We therefore analysed the total expression and surface presence of the Tim-3 receptor in primary human AML blasts and healthy primary human leukocytes isolated from human blood. We found that Tim-3 expression was significantly higher in primary AML cells compared to primary healthy leukocytes. Tim-3 receptor molecules were distributed largely on the surface of primary AML cells, whereas in healthy leukocytes Tim-3 protein was mainly expressed intracellularly. In primary human AML blasts, both Tim-3 agonistic antibody and galectin-9 (a Tim-3 natural ligand) significantly upregulated mTOR pathway activity. This was in line with increased accumulation of hypoxia-inducible factor 1 alpha (HIF-1α) and secretion of VEGF and TNF-α. Similar results were obtained in primary human healthy leukocytes. Importantly, in both types of primary cells, Tim-3-mediated effects were compared with those induced by lipopolysaccharide (LPS) and stem cell factor (SCF). Tim-3 induced comparatively moderate responses in both AML cells and healthy leukocytes. However, Tim-3, like LPS, mediated the release of both TNF-α and VEGF, while SCF induced mostly VEGF secretion and did not upregulate TNF-α release.
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Affiliation(s)
| | - Bernhard F Gibbs
- School of Pharmacy, University of Kent, Kent, ME4 4TB, United Kingdom
| | - Marco Bardelli
- Institute for Research in Biomedicine, Universita' della Svizzera Italiana (USI) 6500 Bellinzona, Switzerland
| | - Luca Varani
- Institute for Research in Biomedicine, Universita' della Svizzera Italiana (USI) 6500 Bellinzona, Switzerland
| | - Vadim V Sumbayev
- School of Pharmacy, University of Kent, Kent, ME4 4TB, United Kingdom
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5
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Gibbs BF, Gonçalves Silva I, Prokhorov A, Abooali M, Yasinska IM, Casely-Hayford MA, Berger SM, Fasler-Kan E, Sumbayev VV. Caffeine affects the biological responses of human hematopoietic cells of myeloid lineage via downregulation of the mTOR pathway and xanthine oxidase activity. Oncotarget 2016; 6:28678-92. [PMID: 26384306 PMCID: PMC4745685 DOI: 10.18632/oncotarget.5212] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Accepted: 08/31/2015] [Indexed: 01/07/2023] Open
Abstract
Correction of human myeloid cell function is crucial for the prevention of inflammatory and allergic reactions as well as leukaemia progression. Caffeine, a naturally occurring food component, is known to display anti-inflammatory effects which have previously been ascribed largely to its inhibitory actions on phosphodiesterase. However, more recent studies suggest an additional role in affecting the activity of the mammalian target of rapamycin (mTOR), a master regulator of myeloid cell translational pathways, although detailed molecular events underlying its mode of action have not been elucidated. Here, we report the cellular uptake of caffeine, without metabolisation, by healthy and malignant hematopoietic myeloid cells including monocytes, basophils and primary acute myeloid leukaemia mononuclear blasts. Unmodified caffeine downregulated mTOR signalling, which affected glycolysis and the release of pro-inflammatory/pro-angiogenic cytokines as well as other inflammatory mediators. In monocytes, the effects of caffeine were potentiated by its ability to inhibit xanthine oxidase, an enzyme which plays a central role in human purine catabolism by generating uric acid. In basophils, caffeine also increased intracellular cyclic adenosine monophosphate (cAMP) levels which further enhanced its inhibitory action on mTOR. These results demonstrate an important mode of pharmacological action of caffeine with potentially wide-ranging therapeutic impact for treating non-infectious disorders of the human immune system, where it could be applied directly to inflammatory cells.
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Affiliation(s)
- Bernhard F Gibbs
- School of Pharmacy, University of Kent, Chatham Maritime, ME4 4TB Kent, United Kingdom
| | | | - Alexandr Prokhorov
- School of Pharmacy, University of Kent, Chatham Maritime, ME4 4TB Kent, United Kingdom
| | - Maryam Abooali
- School of Pharmacy, University of Kent, Chatham Maritime, ME4 4TB Kent, United Kingdom
| | - Inna M Yasinska
- School of Pharmacy, University of Kent, Chatham Maritime, ME4 4TB Kent, United Kingdom
| | | | - Steffen M Berger
- Department of Pediatric Surgery and Department of Clinical Research, Inselspital, University Hospital, University of Bern, CH-3010 Bern, Switzerland
| | - Elizaveta Fasler-Kan
- Department of Pediatric Surgery and Department of Clinical Research, Inselspital, University Hospital, University of Bern, CH-3010 Bern, Switzerland.,Department of Biomedicine, University of Basel and University Hospital Basel, CH-4031 Basel, Switzerland
| | - Vadim V Sumbayev
- School of Pharmacy, University of Kent, Chatham Maritime, ME4 4TB Kent, United Kingdom
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6
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Gonçalves Silva I, Rüegg L, Gibbs BF, Bardelli M, Fruehwirth A, Varani L, Berger SM, Fasler-Kan E, Sumbayev VV. The immune receptor Tim-3 acts as a trafficker in a Tim-3/galectin-9 autocrine loop in human myeloid leukemia cells. Oncoimmunology 2016; 5:e1195535. [PMID: 27622049 PMCID: PMC5006895 DOI: 10.1080/2162402x.2016.1195535] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Revised: 05/19/2016] [Accepted: 05/19/2016] [Indexed: 01/31/2023] Open
Abstract
The immune receptor Tim-3 is often highly expressed in human acute myeloid leukemia (AML) cells where it acts as a growth factor and inflammatory receptor. Recently, it has been demonstrated that Tim-3 forms an autocrine loop with its natural ligand galectin-9 in human AML cells. However, the pathophysiological functions of Tim-3 in human AML cells remain unclear. Here, we report for the first time that Tim-3 is required for galectin-9 secretion in human AML cells. However, this effect is cell-type specific and was found so far to be applicable only to myeloid (and not, for example, lymphoid) leukemia cells. We concluded that AML cells might use Tim-3 as a trafficker for the secretion of galectin-9 which can then be possibly used to impair the anticancer activities of cytotoxic T cells and natural killer (NK) cells.
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Affiliation(s)
| | - Laura Rüegg
- School of Pharmacy, University of Kent , Canterbury, United Kingdom
| | - Bernhard F Gibbs
- School of Pharmacy, University of Kent , Canterbury, United Kingdom
| | - Marco Bardelli
- Institute for Research in Biomedicine, Universita' della Svizzera italiana (USI) , Bellinzona, Switzerland
| | - Alexander Fruehwirth
- Institute for Research in Biomedicine, Universita' della Svizzera italiana (USI) , Bellinzona, Switzerland
| | - Luca Varani
- Institute for Research in Biomedicine, Universita' della Svizzera italiana (USI) , Bellinzona, Switzerland
| | - Steffen M Berger
- Department of Pediatric Surgery and Department of Clinical Research, Children's Hospital, Inselspital, University of Bern , Bern, Switzerland
| | - Elizaveta Fasler-Kan
- Department of Pediatric Surgery and Department of Clinical Research, Children's Hospital, Inselspital, University of Bern, Bern, Switzerland; Department of Biomedicine, University of Basel and University Hospital Basel, Basel, Switzerland
| | - Vadim V Sumbayev
- School of Pharmacy, University of Kent , Canterbury, United Kingdom
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7
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Wyszynski RW, Gibbs BF, Varani L, Iannotta D, Sumbayev VV. Interleukin-1 beta induces the expression and production of stem cell factor by epithelial cells: crucial involvement of the PI-3K/mTOR pathway and HIF-1 transcription complex. Cell Mol Immunol 2016; 13:47-56. [PMID: 25418470 PMCID: PMC4711673 DOI: 10.1038/cmi.2014.113] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Revised: 10/17/2014] [Accepted: 10/17/2014] [Indexed: 11/09/2022] Open
Abstract
Potential crosslinks between inflammation and leukaemia have been discussed for some time, but experimental evidence to support this dogma is scarce. In particular, it is important to understand the mechanisms responsible for potential upregulation of proto-oncogenic growth factor expressions by inflammatory mediators. Here, we investigated the ability of the highly inflammatory cytokine interleukin-1 beta (IL-1β) to induce the production of stem cell factor (SCF), which is a major hematopoietic growth factor that controls the progression of acute myeloid leukaemia upon malignant transformation of haematopoietic myeloid cells. We found that human IL-1β induced the expression/secretion of SCF in MCF-7 human epithelial breast cancer cells and that this process depended on the hypoxia-inducible factor 1 (HIF-1) transcription complex. We also demonstrated a crucial role of the phosphatidylinositol-3 kinase (PI-3K)/mammalian target of rapamycin (mTOR) pathway in IL-1β-induced HIF-1α accumulation in MCF-7 cells. Importantly, mTOR was also found to play a role in IL-1β-induced SCF production. Furthermore, a tendency for a positive correlation of IL-1β and SCF levels in the plasma of healthy human donors was observed. Altogether, our results demonstrate that IL-1β, which normally bridges innate and adaptive immunity, induces the production of the major haematopoietic/proleukaemic growth factor SCF through the PI-3K/mTOR pathway and the HIF-1 transcription complex. These findings strongly support a cross-talk between inflammation and acute myeloid leukaemia.
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Affiliation(s)
| | | | - Luca Varani
- Institute for Research in Biomedicine, Bellinzona, Switzerland
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8
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Targeting c-kit receptor in neuroblastomas and colorectal cancers using stem cell factor (SCF)-based recombinant bacterial toxins. Appl Microbiol Biotechnol 2015; 100:263-77. [DOI: 10.1007/s00253-015-6978-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Revised: 08/20/2015] [Accepted: 09/01/2015] [Indexed: 11/27/2022]
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Prokhorov A, Gibbs BF, Bardelli M, Rüegg L, Fasler-Kan E, Varani L, Sumbayev VV. The immune receptor Tim-3 mediates activation of PI3 kinase/mTOR and HIF-1 pathways in human myeloid leukaemia cells. Int J Biochem Cell Biol 2014; 59:11-20. [PMID: 25483439 DOI: 10.1016/j.biocel.2014.11.017] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2014] [Revised: 10/10/2014] [Accepted: 11/28/2014] [Indexed: 12/22/2022]
Abstract
The T-cell immunoglobulin and mucin domain 3 (Tim-3) is a plasma membrane-associated protein that is highly expressed in human acute myeloid leukaemia cells. As an acute myeloid leukaemia antigen, it could therefore be considered as a potential target for immune therapy and highly-specific drug delivery. However, a conceptual understanding of its biological role is required before consideration of this protein for therapeutic settings. Here, we reveal the detailed mechanism of action underlying the biological responses mediated by the Tim-3 receptor in myeloid cells. Our studies demonstrate that Tim-3 triggers growth factor type responses in acute myeloid leukaemia cells by activating a phosphatidylinositol-3 kinase (PI-3K)/mammalian target of rapamycin (mTOR) pathway. In addition, the receptor activates hypoxic signalling pathways upregulating glycolysis and pro-angiogenic responses. These findings suggest that Tim-3 could be used as a potential therapeutic target for immune therapy and drug delivery in human acute myeloid leukaemia cells.
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Affiliation(s)
- Alexandr Prokhorov
- School of Pharmacy, University of Kent, Anson Building, Central Avenue, Chatham Maritime, Kent ME4 4TB, UK
| | - Bernhard F Gibbs
- School of Pharmacy, University of Kent, Anson Building, Central Avenue, Chatham Maritime, Kent ME4 4TB, UK
| | - Marco Bardelli
- Institute for Research in Biomedicine, Via Vela 6, 6500 Bellinzona, Switzerland
| | - Laura Rüegg
- School of Pharmacy, University of Kent, Anson Building, Central Avenue, Chatham Maritime, Kent ME4 4TB, UK; High School of Life Sciences, University of Applied Sciences North-Western Switzerland, Muttenz, Switzerland
| | - Elizaveta Fasler-Kan
- High School of Life Sciences, University of Applied Sciences North-Western Switzerland, Muttenz, Switzerland; Department of Biomedicine, University of Basel and University Hospital Basel, CH-4031 Basel, Switzerland.
| | - Luca Varani
- Institute for Research in Biomedicine, Via Vela 6, 6500 Bellinzona, Switzerland.
| | - Vadim V Sumbayev
- School of Pharmacy, University of Kent, Anson Building, Central Avenue, Chatham Maritime, Kent ME4 4TB, UK.
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10
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Expression of bioactive soluble human stem cell factor (SCF) from recombinant Escherichia coli by coproduction of thioredoxin and efficient purification using arginine in affinity chromatography. Protein Expr Purif 2014; 105:1-7. [PMID: 25286400 DOI: 10.1016/j.pep.2014.09.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Revised: 09/19/2014] [Accepted: 09/19/2014] [Indexed: 11/20/2022]
Abstract
Stem cell factor (SCF) known as the c-kit ligand is a two disulfide bridge-containing cytokine in the regulation of the development and function of hematopoietic cell lineages and other cells such as mast cells, germ cells, and melanocytes. The secreted soluble form of SCF exists as noncovalently associated homodimer and exerts its activity by signaling through the c-Kit receptor. In this report, we present the high level expression of a soluble recombinant human SCF (rhSCF) in Escherichia coli. A codon-optimized Profinity eXact™-tagged hSCF cDNA was cloned into pET3b vector, and transformed into E. coli BL21(DE3) harboring a bacterial thioredoxin coexpression vector. The recombinant protein was purified via an affinity chromatography processed by cleavage with sodium fluoride, resulting in the complete proteolytic removal the N-terminal tag. Although almost none of the soluble fusion protein bound to the resin in standard protocol using 0.1M sodium phosphate buffer (pH 7.2), the use of binding buffer containing 0.5M l-arginine for protein stabilization dramatically enhanced binding to resin and recovery of the protein beyond expectation. Also pretreatment by Triton X-114 for removing endotoxin was effective for affinity chromatography. In chromatography performance, l-arginine was more effective than Triton X-114 treatment. Following Mono Q anion exchange chromatography, the target protein was isolated in high purity. The rhSCF protein specifically enhanced the viability of human myeloid leukemia cell line TF-1 and the proliferation and maturation of human mast cell line LAD2 cell. This novel protocol for the production of rhSCF is a simple, suitable, and efficient method.
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11
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Wang F, Guo J, Bai Q, Wang L. Refolding and purification of recombinant human (Pro)renin receptor fromEscherichia coliby ion exchange chromatography. Biotechnol Prog 2014; 30:864-71. [DOI: 10.1002/btpr.1916] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2013] [Revised: 03/27/2014] [Accepted: 03/29/2014] [Indexed: 11/09/2022]
Affiliation(s)
- Fei Wang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education; Inst. of Modern Separation Science, Key Lab of Modern Separation Science in Shaanxi Province, Northwest University; Xi'an 710069 China
| | - Jinjin Guo
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education; Inst. of Modern Separation Science, Key Lab of Modern Separation Science in Shaanxi Province, Northwest University; Xi'an 710069 China
| | - Quan Bai
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education; Inst. of Modern Separation Science, Key Lab of Modern Separation Science in Shaanxi Province, Northwest University; Xi'an 710069 China
| | - Lili Wang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education; Inst. of Modern Separation Science, Key Lab of Modern Separation Science in Shaanxi Province, Northwest University; Xi'an 710069 China
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12
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Protein renaturation with simultaneous purification by protein folding liquid chromatography: recent developments. Amino Acids 2013; 46:153-65. [DOI: 10.1007/s00726-013-1614-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2013] [Accepted: 10/20/2013] [Indexed: 10/26/2022]
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13
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Li M, Fan H, Liu J, Wang M, Wang L, Wang C. High pH solubilization and chromatography-based renaturation and purification of recombinant human granulocyte colony-stimulating factor from inclusion bodies. Appl Biochem Biotechnol 2012; 166:1264-74. [PMID: 22212394 DOI: 10.1007/s12010-011-9512-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2011] [Accepted: 12/20/2011] [Indexed: 12/01/2022]
Abstract
Recombinant human granulocyte colony-stimulating factor (rhG-CSF) is a very efficient therapeutic protein drug which has been widely used in human clinics to treat cancer patients suffering from chemotherapy-induced neutropenia. In this study, rhG-CSF was solubilized from inclusion bodies by using a high-pH solution containing low concentration of urea. It was found that solubilization of the rhG-CSF inclusion bodies greatly depended on the buffer pH employed; alkalic pH significantly favored the solubilization. In addition, when small amount of urea was added to the solution at high pH, the solubilization was further enhanced. After solubilization, the rhG-CSF was renatured with simultaneous purification by using weak anion exchange, strong anion exchange, and hydrophobic interaction chromatography, separately. The results indicated that the rhG-CSF solubilized by the high-pH solution containing low concentration of urea had much higher mass recovery than the one solubilized by 8 M urea when using anyone of the three refolding methods employed in this work. In the case of weak anion exchange chromatography, the high pH solubilized rhG-CSF could get a mass recovery of 73%. The strategy of combining solubilization of inclusion bodies at high pH with refolding of protein using liquid chromatography may become a routine method for protein production from inclusion bodies.
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Affiliation(s)
- Ming Li
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, People's Republic of China
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14
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Lee MS, Lien YY, Feng SH, Huang RL, Tsai MC, Chang WT, Chen HJ. Production of chicken anemia virus (CAV) VP1 and VP2 protein expressed by recombinant Escherichia coli. Process Biochem 2009. [DOI: 10.1016/j.procbio.2008.11.016] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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