Homogeneous, Synthetic, Non-Saccharide Glycosaminoglycan Mimetics as Potent Inhibitors of Human Cathepsin G
Cathepsin G (CatG) is a pro-inflammatory neutrophil serine protease that is important for host defense, and has been implicated in several inflammatory disorders. Hence, inhibition of CatG holds much therapeutic potential; however, only a few inhibitors have been identified to date, and none have re...
Ausführliche Beschreibung
Autor*in: |
Daniel K. Afosah [verfasserIn] Rawan M. Fayyad [verfasserIn] Valerie R. Puliafico [verfasserIn] Spencer Merrell [verfasserIn] Eltice K. Langmia [verfasserIn] Sophie R. Diagne [verfasserIn] Rami A. Al-Horani [verfasserIn] Umesh R. Desai [verfasserIn] |
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E-Artikel |
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Sprache: |
Englisch |
Erschienen: |
2023 |
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Übergeordnetes Werk: |
In: Biomolecules - MDPI AG, 2013, 13(2023), 5, p 760 |
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Übergeordnetes Werk: |
volume:13 ; year:2023 ; number:5, p 760 |
Links: |
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DOI / URN: |
10.3390/biom13050760 |
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Katalog-ID: |
DOAJ09441257X |
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520 | |a Cathepsin G (CatG) is a pro-inflammatory neutrophil serine protease that is important for host defense, and has been implicated in several inflammatory disorders. Hence, inhibition of CatG holds much therapeutic potential; however, only a few inhibitors have been identified to date, and none have reached clinical trials. Of these, heparin is a well-known inhibitor of CatG, but its heterogeneity and bleeding risk reduce its clinical potential. We reasoned that synthetic small mimetics of heparin, labeled as non-saccharide glycosaminoglycan mimetics (NSGMs), would exhibit potent CatG inhibition while being devoid of bleeding risks associated with heparin. Hence, we screened a focused library of 30 NSGMs for CatG inhibition using a chromogenic substrate hydrolysis assay and identified nano- to micro-molar inhibitors with varying levels of efficacy. Of these, a structurally-defined, octasulfated di-quercetin NSGM <b<25</b< inhibited CatG with a potency of ~50 nM. NSGM <b<25</b< binds to CatG in an allosteric site through an approximately equal contribution of ionic and nonionic forces. Octasulfated <b<25</b< exhibits no impact on human plasma clotting, suggesting minimal bleeding risk. Considering that octasulfated <b<25</b< also potently inhibits two other pro-inflammatory proteases, human neutrophil elastase and human plasmin, the current results imply the possibility of a multi-pronged anti-inflammatory approach in which these proteases are likely to simultaneously likely combat important conditions, e.g., rheumatoid arthritis, emphysema, or cystic fibrosis, with minimal bleeding risk. | ||
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10.3390/biom13050760 doi (DE-627)DOAJ09441257X (DE-599)DOAJ1097e4fa5d0a43ee96427a13d0f7ae17 DE-627 ger DE-627 rakwb eng QR1-502 Daniel K. Afosah verfasserin aut Homogeneous, Synthetic, Non-Saccharide Glycosaminoglycan Mimetics as Potent Inhibitors of Human Cathepsin G 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Cathepsin G (CatG) is a pro-inflammatory neutrophil serine protease that is important for host defense, and has been implicated in several inflammatory disorders. Hence, inhibition of CatG holds much therapeutic potential; however, only a few inhibitors have been identified to date, and none have reached clinical trials. Of these, heparin is a well-known inhibitor of CatG, but its heterogeneity and bleeding risk reduce its clinical potential. We reasoned that synthetic small mimetics of heparin, labeled as non-saccharide glycosaminoglycan mimetics (NSGMs), would exhibit potent CatG inhibition while being devoid of bleeding risks associated with heparin. Hence, we screened a focused library of 30 NSGMs for CatG inhibition using a chromogenic substrate hydrolysis assay and identified nano- to micro-molar inhibitors with varying levels of efficacy. Of these, a structurally-defined, octasulfated di-quercetin NSGM <b<25</b< inhibited CatG with a potency of ~50 nM. NSGM <b<25</b< binds to CatG in an allosteric site through an approximately equal contribution of ionic and nonionic forces. Octasulfated <b<25</b< exhibits no impact on human plasma clotting, suggesting minimal bleeding risk. Considering that octasulfated <b<25</b< also potently inhibits two other pro-inflammatory proteases, human neutrophil elastase and human plasmin, the current results imply the possibility of a multi-pronged anti-inflammatory approach in which these proteases are likely to simultaneously likely combat important conditions, e.g., rheumatoid arthritis, emphysema, or cystic fibrosis, with minimal bleeding risk. allosterism cathepsin G glycosaminoglycans mimetics inflammation Microbiology Rawan M. Fayyad verfasserin aut Valerie R. Puliafico verfasserin aut Spencer Merrell verfasserin aut Eltice K. Langmia verfasserin aut Sophie R. Diagne verfasserin aut Rami A. Al-Horani verfasserin aut Umesh R. Desai verfasserin aut In Biomolecules MDPI AG, 2013 13(2023), 5, p 760 (DE-627)735688915 (DE-600)2701262-1 2218273X nnns volume:13 year:2023 number:5, p 760 https://doi.org/10.3390/biom13050760 kostenfrei https://doaj.org/article/1097e4fa5d0a43ee96427a13d0f7ae17 kostenfrei https://www.mdpi.com/2218-273X/13/5/760 kostenfrei https://doaj.org/toc/2218-273X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 13 2023 5, p 760 |
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10.3390/biom13050760 doi (DE-627)DOAJ09441257X (DE-599)DOAJ1097e4fa5d0a43ee96427a13d0f7ae17 DE-627 ger DE-627 rakwb eng QR1-502 Daniel K. Afosah verfasserin aut Homogeneous, Synthetic, Non-Saccharide Glycosaminoglycan Mimetics as Potent Inhibitors of Human Cathepsin G 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Cathepsin G (CatG) is a pro-inflammatory neutrophil serine protease that is important for host defense, and has been implicated in several inflammatory disorders. Hence, inhibition of CatG holds much therapeutic potential; however, only a few inhibitors have been identified to date, and none have reached clinical trials. Of these, heparin is a well-known inhibitor of CatG, but its heterogeneity and bleeding risk reduce its clinical potential. We reasoned that synthetic small mimetics of heparin, labeled as non-saccharide glycosaminoglycan mimetics (NSGMs), would exhibit potent CatG inhibition while being devoid of bleeding risks associated with heparin. Hence, we screened a focused library of 30 NSGMs for CatG inhibition using a chromogenic substrate hydrolysis assay and identified nano- to micro-molar inhibitors with varying levels of efficacy. Of these, a structurally-defined, octasulfated di-quercetin NSGM <b<25</b< inhibited CatG with a potency of ~50 nM. NSGM <b<25</b< binds to CatG in an allosteric site through an approximately equal contribution of ionic and nonionic forces. Octasulfated <b<25</b< exhibits no impact on human plasma clotting, suggesting minimal bleeding risk. Considering that octasulfated <b<25</b< also potently inhibits two other pro-inflammatory proteases, human neutrophil elastase and human plasmin, the current results imply the possibility of a multi-pronged anti-inflammatory approach in which these proteases are likely to simultaneously likely combat important conditions, e.g., rheumatoid arthritis, emphysema, or cystic fibrosis, with minimal bleeding risk. allosterism cathepsin G glycosaminoglycans mimetics inflammation Microbiology Rawan M. Fayyad verfasserin aut Valerie R. Puliafico verfasserin aut Spencer Merrell verfasserin aut Eltice K. Langmia verfasserin aut Sophie R. Diagne verfasserin aut Rami A. Al-Horani verfasserin aut Umesh R. Desai verfasserin aut In Biomolecules MDPI AG, 2013 13(2023), 5, p 760 (DE-627)735688915 (DE-600)2701262-1 2218273X nnns volume:13 year:2023 number:5, p 760 https://doi.org/10.3390/biom13050760 kostenfrei https://doaj.org/article/1097e4fa5d0a43ee96427a13d0f7ae17 kostenfrei https://www.mdpi.com/2218-273X/13/5/760 kostenfrei https://doaj.org/toc/2218-273X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 13 2023 5, p 760 |
allfields_unstemmed |
10.3390/biom13050760 doi (DE-627)DOAJ09441257X (DE-599)DOAJ1097e4fa5d0a43ee96427a13d0f7ae17 DE-627 ger DE-627 rakwb eng QR1-502 Daniel K. Afosah verfasserin aut Homogeneous, Synthetic, Non-Saccharide Glycosaminoglycan Mimetics as Potent Inhibitors of Human Cathepsin G 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Cathepsin G (CatG) is a pro-inflammatory neutrophil serine protease that is important for host defense, and has been implicated in several inflammatory disorders. Hence, inhibition of CatG holds much therapeutic potential; however, only a few inhibitors have been identified to date, and none have reached clinical trials. Of these, heparin is a well-known inhibitor of CatG, but its heterogeneity and bleeding risk reduce its clinical potential. We reasoned that synthetic small mimetics of heparin, labeled as non-saccharide glycosaminoglycan mimetics (NSGMs), would exhibit potent CatG inhibition while being devoid of bleeding risks associated with heparin. Hence, we screened a focused library of 30 NSGMs for CatG inhibition using a chromogenic substrate hydrolysis assay and identified nano- to micro-molar inhibitors with varying levels of efficacy. Of these, a structurally-defined, octasulfated di-quercetin NSGM <b<25</b< inhibited CatG with a potency of ~50 nM. NSGM <b<25</b< binds to CatG in an allosteric site through an approximately equal contribution of ionic and nonionic forces. Octasulfated <b<25</b< exhibits no impact on human plasma clotting, suggesting minimal bleeding risk. Considering that octasulfated <b<25</b< also potently inhibits two other pro-inflammatory proteases, human neutrophil elastase and human plasmin, the current results imply the possibility of a multi-pronged anti-inflammatory approach in which these proteases are likely to simultaneously likely combat important conditions, e.g., rheumatoid arthritis, emphysema, or cystic fibrosis, with minimal bleeding risk. allosterism cathepsin G glycosaminoglycans mimetics inflammation Microbiology Rawan M. Fayyad verfasserin aut Valerie R. Puliafico verfasserin aut Spencer Merrell verfasserin aut Eltice K. Langmia verfasserin aut Sophie R. Diagne verfasserin aut Rami A. Al-Horani verfasserin aut Umesh R. Desai verfasserin aut In Biomolecules MDPI AG, 2013 13(2023), 5, p 760 (DE-627)735688915 (DE-600)2701262-1 2218273X nnns volume:13 year:2023 number:5, p 760 https://doi.org/10.3390/biom13050760 kostenfrei https://doaj.org/article/1097e4fa5d0a43ee96427a13d0f7ae17 kostenfrei https://www.mdpi.com/2218-273X/13/5/760 kostenfrei https://doaj.org/toc/2218-273X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 13 2023 5, p 760 |
allfieldsGer |
10.3390/biom13050760 doi (DE-627)DOAJ09441257X (DE-599)DOAJ1097e4fa5d0a43ee96427a13d0f7ae17 DE-627 ger DE-627 rakwb eng QR1-502 Daniel K. Afosah verfasserin aut Homogeneous, Synthetic, Non-Saccharide Glycosaminoglycan Mimetics as Potent Inhibitors of Human Cathepsin G 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Cathepsin G (CatG) is a pro-inflammatory neutrophil serine protease that is important for host defense, and has been implicated in several inflammatory disorders. Hence, inhibition of CatG holds much therapeutic potential; however, only a few inhibitors have been identified to date, and none have reached clinical trials. Of these, heparin is a well-known inhibitor of CatG, but its heterogeneity and bleeding risk reduce its clinical potential. We reasoned that synthetic small mimetics of heparin, labeled as non-saccharide glycosaminoglycan mimetics (NSGMs), would exhibit potent CatG inhibition while being devoid of bleeding risks associated with heparin. Hence, we screened a focused library of 30 NSGMs for CatG inhibition using a chromogenic substrate hydrolysis assay and identified nano- to micro-molar inhibitors with varying levels of efficacy. Of these, a structurally-defined, octasulfated di-quercetin NSGM <b<25</b< inhibited CatG with a potency of ~50 nM. NSGM <b<25</b< binds to CatG in an allosteric site through an approximately equal contribution of ionic and nonionic forces. Octasulfated <b<25</b< exhibits no impact on human plasma clotting, suggesting minimal bleeding risk. Considering that octasulfated <b<25</b< also potently inhibits two other pro-inflammatory proteases, human neutrophil elastase and human plasmin, the current results imply the possibility of a multi-pronged anti-inflammatory approach in which these proteases are likely to simultaneously likely combat important conditions, e.g., rheumatoid arthritis, emphysema, or cystic fibrosis, with minimal bleeding risk. allosterism cathepsin G glycosaminoglycans mimetics inflammation Microbiology Rawan M. Fayyad verfasserin aut Valerie R. Puliafico verfasserin aut Spencer Merrell verfasserin aut Eltice K. Langmia verfasserin aut Sophie R. Diagne verfasserin aut Rami A. Al-Horani verfasserin aut Umesh R. Desai verfasserin aut In Biomolecules MDPI AG, 2013 13(2023), 5, p 760 (DE-627)735688915 (DE-600)2701262-1 2218273X nnns volume:13 year:2023 number:5, p 760 https://doi.org/10.3390/biom13050760 kostenfrei https://doaj.org/article/1097e4fa5d0a43ee96427a13d0f7ae17 kostenfrei https://www.mdpi.com/2218-273X/13/5/760 kostenfrei https://doaj.org/toc/2218-273X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 13 2023 5, p 760 |
allfieldsSound |
10.3390/biom13050760 doi (DE-627)DOAJ09441257X (DE-599)DOAJ1097e4fa5d0a43ee96427a13d0f7ae17 DE-627 ger DE-627 rakwb eng QR1-502 Daniel K. Afosah verfasserin aut Homogeneous, Synthetic, Non-Saccharide Glycosaminoglycan Mimetics as Potent Inhibitors of Human Cathepsin G 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Cathepsin G (CatG) is a pro-inflammatory neutrophil serine protease that is important for host defense, and has been implicated in several inflammatory disorders. Hence, inhibition of CatG holds much therapeutic potential; however, only a few inhibitors have been identified to date, and none have reached clinical trials. Of these, heparin is a well-known inhibitor of CatG, but its heterogeneity and bleeding risk reduce its clinical potential. We reasoned that synthetic small mimetics of heparin, labeled as non-saccharide glycosaminoglycan mimetics (NSGMs), would exhibit potent CatG inhibition while being devoid of bleeding risks associated with heparin. Hence, we screened a focused library of 30 NSGMs for CatG inhibition using a chromogenic substrate hydrolysis assay and identified nano- to micro-molar inhibitors with varying levels of efficacy. Of these, a structurally-defined, octasulfated di-quercetin NSGM <b<25</b< inhibited CatG with a potency of ~50 nM. NSGM <b<25</b< binds to CatG in an allosteric site through an approximately equal contribution of ionic and nonionic forces. Octasulfated <b<25</b< exhibits no impact on human plasma clotting, suggesting minimal bleeding risk. Considering that octasulfated <b<25</b< also potently inhibits two other pro-inflammatory proteases, human neutrophil elastase and human plasmin, the current results imply the possibility of a multi-pronged anti-inflammatory approach in which these proteases are likely to simultaneously likely combat important conditions, e.g., rheumatoid arthritis, emphysema, or cystic fibrosis, with minimal bleeding risk. allosterism cathepsin G glycosaminoglycans mimetics inflammation Microbiology Rawan M. Fayyad verfasserin aut Valerie R. Puliafico verfasserin aut Spencer Merrell verfasserin aut Eltice K. Langmia verfasserin aut Sophie R. Diagne verfasserin aut Rami A. Al-Horani verfasserin aut Umesh R. Desai verfasserin aut In Biomolecules MDPI AG, 2013 13(2023), 5, p 760 (DE-627)735688915 (DE-600)2701262-1 2218273X nnns volume:13 year:2023 number:5, p 760 https://doi.org/10.3390/biom13050760 kostenfrei https://doaj.org/article/1097e4fa5d0a43ee96427a13d0f7ae17 kostenfrei https://www.mdpi.com/2218-273X/13/5/760 kostenfrei https://doaj.org/toc/2218-273X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 13 2023 5, p 760 |
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Homogeneous, Synthetic, Non-Saccharide Glycosaminoglycan Mimetics as Potent Inhibitors of Human Cathepsin G |
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Cathepsin G (CatG) is a pro-inflammatory neutrophil serine protease that is important for host defense, and has been implicated in several inflammatory disorders. Hence, inhibition of CatG holds much therapeutic potential; however, only a few inhibitors have been identified to date, and none have reached clinical trials. Of these, heparin is a well-known inhibitor of CatG, but its heterogeneity and bleeding risk reduce its clinical potential. We reasoned that synthetic small mimetics of heparin, labeled as non-saccharide glycosaminoglycan mimetics (NSGMs), would exhibit potent CatG inhibition while being devoid of bleeding risks associated with heparin. Hence, we screened a focused library of 30 NSGMs for CatG inhibition using a chromogenic substrate hydrolysis assay and identified nano- to micro-molar inhibitors with varying levels of efficacy. Of these, a structurally-defined, octasulfated di-quercetin NSGM <b<25</b< inhibited CatG with a potency of ~50 nM. NSGM <b<25</b< binds to CatG in an allosteric site through an approximately equal contribution of ionic and nonionic forces. Octasulfated <b<25</b< exhibits no impact on human plasma clotting, suggesting minimal bleeding risk. Considering that octasulfated <b<25</b< also potently inhibits two other pro-inflammatory proteases, human neutrophil elastase and human plasmin, the current results imply the possibility of a multi-pronged anti-inflammatory approach in which these proteases are likely to simultaneously likely combat important conditions, e.g., rheumatoid arthritis, emphysema, or cystic fibrosis, with minimal bleeding risk. |
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Cathepsin G (CatG) is a pro-inflammatory neutrophil serine protease that is important for host defense, and has been implicated in several inflammatory disorders. Hence, inhibition of CatG holds much therapeutic potential; however, only a few inhibitors have been identified to date, and none have reached clinical trials. Of these, heparin is a well-known inhibitor of CatG, but its heterogeneity and bleeding risk reduce its clinical potential. We reasoned that synthetic small mimetics of heparin, labeled as non-saccharide glycosaminoglycan mimetics (NSGMs), would exhibit potent CatG inhibition while being devoid of bleeding risks associated with heparin. Hence, we screened a focused library of 30 NSGMs for CatG inhibition using a chromogenic substrate hydrolysis assay and identified nano- to micro-molar inhibitors with varying levels of efficacy. Of these, a structurally-defined, octasulfated di-quercetin NSGM <b<25</b< inhibited CatG with a potency of ~50 nM. NSGM <b<25</b< binds to CatG in an allosteric site through an approximately equal contribution of ionic and nonionic forces. Octasulfated <b<25</b< exhibits no impact on human plasma clotting, suggesting minimal bleeding risk. Considering that octasulfated <b<25</b< also potently inhibits two other pro-inflammatory proteases, human neutrophil elastase and human plasmin, the current results imply the possibility of a multi-pronged anti-inflammatory approach in which these proteases are likely to simultaneously likely combat important conditions, e.g., rheumatoid arthritis, emphysema, or cystic fibrosis, with minimal bleeding risk. |
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Cathepsin G (CatG) is a pro-inflammatory neutrophil serine protease that is important for host defense, and has been implicated in several inflammatory disorders. Hence, inhibition of CatG holds much therapeutic potential; however, only a few inhibitors have been identified to date, and none have reached clinical trials. Of these, heparin is a well-known inhibitor of CatG, but its heterogeneity and bleeding risk reduce its clinical potential. We reasoned that synthetic small mimetics of heparin, labeled as non-saccharide glycosaminoglycan mimetics (NSGMs), would exhibit potent CatG inhibition while being devoid of bleeding risks associated with heparin. Hence, we screened a focused library of 30 NSGMs for CatG inhibition using a chromogenic substrate hydrolysis assay and identified nano- to micro-molar inhibitors with varying levels of efficacy. Of these, a structurally-defined, octasulfated di-quercetin NSGM <b<25</b< inhibited CatG with a potency of ~50 nM. NSGM <b<25</b< binds to CatG in an allosteric site through an approximately equal contribution of ionic and nonionic forces. Octasulfated <b<25</b< exhibits no impact on human plasma clotting, suggesting minimal bleeding risk. Considering that octasulfated <b<25</b< also potently inhibits two other pro-inflammatory proteases, human neutrophil elastase and human plasmin, the current results imply the possibility of a multi-pronged anti-inflammatory approach in which these proteases are likely to simultaneously likely combat important conditions, e.g., rheumatoid arthritis, emphysema, or cystic fibrosis, with minimal bleeding risk. |
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Afosah</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">Homogeneous, Synthetic, Non-Saccharide Glycosaminoglycan Mimetics as Potent Inhibitors of Human Cathepsin G</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">2023</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">Text</subfield><subfield code="b">txt</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">Computermedien</subfield><subfield code="b">c</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">Online-Ressource</subfield><subfield code="b">cr</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Cathepsin G (CatG) is a pro-inflammatory neutrophil serine protease that is important for host defense, and has been implicated in several inflammatory disorders. Hence, inhibition of CatG holds much therapeutic potential; however, only a few inhibitors have been identified to date, and none have reached clinical trials. Of these, heparin is a well-known inhibitor of CatG, but its heterogeneity and bleeding risk reduce its clinical potential. We reasoned that synthetic small mimetics of heparin, labeled as non-saccharide glycosaminoglycan mimetics (NSGMs), would exhibit potent CatG inhibition while being devoid of bleeding risks associated with heparin. Hence, we screened a focused library of 30 NSGMs for CatG inhibition using a chromogenic substrate hydrolysis assay and identified nano- to micro-molar inhibitors with varying levels of efficacy. Of these, a structurally-defined, octasulfated di-quercetin NSGM <b<25</b< inhibited CatG with a potency of ~50 nM. NSGM <b<25</b< binds to CatG in an allosteric site through an approximately equal contribution of ionic and nonionic forces. Octasulfated <b<25</b< exhibits no impact on human plasma clotting, suggesting minimal bleeding risk. Considering that octasulfated <b<25</b< also potently inhibits two other pro-inflammatory proteases, human neutrophil elastase and human plasmin, the current results imply the possibility of a multi-pronged anti-inflammatory approach in which these proteases are likely to simultaneously likely combat important conditions, e.g., rheumatoid arthritis, emphysema, or cystic fibrosis, with minimal bleeding risk.</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">allosterism</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">cathepsin G</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">glycosaminoglycans</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">mimetics</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">inflammation</subfield></datafield><datafield tag="653" ind1=" " ind2="0"><subfield code="a">Microbiology</subfield></datafield><datafield tag="700" ind1="0" ind2=" "><subfield code="a">Rawan M. 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