Inhibition of CFTR-mediated intestinal chloride secretion by a fungus-derived arthropsolide A: Mechanism of action and anti-diarrheal efficacy
Secretory diarrhea is one of the most common types of diarrhea with high morbidity and mortality. Previous studies showed that inhibition of cystic fibrosis transmembrane conductance regulator (CFTR) Cl- channels alleviated fluid loss in secretory diarrheas. This study aimed to identify novel CFTR i...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Akrimajirachoote, Nattaphong [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2020transfer abstract |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: Mexican student-teachers’ “English” language praxicum: Decolonizing attempts - López-Gopar, Mario E. ELSEVIER, 2022, EJP, New York, NY [u.a.] |
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| Übergeordnetes Werk: |
volume:885 ; year:2020 ; day:15 ; month:10 ; pages:0 |
| Links: |
|---|
| DOI / URN: |
10.1016/j.ejphar.2020.173393 |
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ELV051562448 |
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| 520 | |a Secretory diarrhea is one of the most common types of diarrhea with high morbidity and mortality. Previous studies showed that inhibition of cystic fibrosis transmembrane conductance regulator (CFTR) Cl- channels alleviated fluid loss in secretory diarrheas. This study aimed to identify novel CFTR inhibitors from fungal metabolites and explore its underlying mechanisms and potential utility in secretory diarrheas. Electrophysiological analyses in human intestinal epithelial (T84) cells were performed to investigate the effect and mechanism of fungal metabolites on CFTR-mediated Cl- secretion. Anti-diarrheal efficacy and the effect of compound on fluid absorption were investigated in mouse closed-loop models. We found that the screening identified arthropsolide A, a fungal metabolite from an endophytic fungus Roussoella sp. PSU-H51, as an inhibitor of CFTR-mediated Cl- secretion in T84 cells (IC50 ~0.8 μM). Arthropsolide A inhibited both CFTR and cAMP-activated basolateral K+ channels. Arthropsolide A had no effect on Na+-K+ ATPase activity. Interestingly, the inhibitory effect of arthropsolide A on CFTR was attenuated by cell depolarization and AMPK inhibition independent of multi-drug resistance protein 4, phosphodiesterases, and protein phosphatases. Importantly, arthropsolide A suppressed cholera toxin (CT)-induced Cl- secretion in T84 cells and CT-induced intestinal fluid secretion in mice by ~75% without affecting intestinal fluid absorption. Taken together, arthropsolide A represents a novel class of fungal metabolites that acts as a potent CFTR inhibitor. Further development of this class of compounds may provide a therapy for secretory diarrheas. | ||
| 520 | |a Secretory diarrhea is one of the most common types of diarrhea with high morbidity and mortality. Previous studies showed that inhibition of cystic fibrosis transmembrane conductance regulator (CFTR) Cl- channels alleviated fluid loss in secretory diarrheas. This study aimed to identify novel CFTR inhibitors from fungal metabolites and explore its underlying mechanisms and potential utility in secretory diarrheas. Electrophysiological analyses in human intestinal epithelial (T84) cells were performed to investigate the effect and mechanism of fungal metabolites on CFTR-mediated Cl- secretion. Anti-diarrheal efficacy and the effect of compound on fluid absorption were investigated in mouse closed-loop models. We found that the screening identified arthropsolide A, a fungal metabolite from an endophytic fungus Roussoella sp. PSU-H51, as an inhibitor of CFTR-mediated Cl- secretion in T84 cells (IC50 ~0.8 μM). Arthropsolide A inhibited both CFTR and cAMP-activated basolateral K+ channels. Arthropsolide A had no effect on Na+-K+ ATPase activity. Interestingly, the inhibitory effect of arthropsolide A on CFTR was attenuated by cell depolarization and AMPK inhibition independent of multi-drug resistance protein 4, phosphodiesterases, and protein phosphatases. Importantly, arthropsolide A suppressed cholera toxin (CT)-induced Cl- secretion in T84 cells and CT-induced intestinal fluid secretion in mice by ~75% without affecting intestinal fluid absorption. Taken together, arthropsolide A represents a novel class of fungal metabolites that acts as a potent CFTR inhibitor. Further development of this class of compounds may provide a therapy for secretory diarrheas. | ||
| 650 | 7 | |a Secretory diarrheas |2 Elsevier | |
| 650 | 7 | |a Arthropsolide A |2 Elsevier | |
| 650 | 7 | |a Cholera |2 Elsevier | |
| 650 | 7 | |a CFTR |2 Elsevier | |
| 650 | 7 | |a Chloride secretion |2 Elsevier | |
| 700 | 1 | |a Satitsri, Saravut |4 oth | |
| 700 | 1 | |a Sommart, Ubonta |4 oth | |
| 700 | 1 | |a Rukachaisirikul, Vatcharin |4 oth | |
| 700 | 1 | |a Muanprasat, Chatchai |4 oth | |
| 773 | 0 | 8 | |i Enthalten in |n Elsevier |a López-Gopar, Mario E. ELSEVIER |t Mexican student-teachers’ “English” language praxicum: Decolonizing attempts |d 2022 |d EJP |g New York, NY [u.a.] |w (DE-627)ELV008405875 |
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10.1016/j.ejphar.2020.173393 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001486.pica (DE-627)ELV051562448 (ELSEVIER)S0014-2999(20)30485-4 DE-627 ger DE-627 rakwb eng 370 VZ 5,3 ssgn Akrimajirachoote, Nattaphong verfasserin aut Inhibition of CFTR-mediated intestinal chloride secretion by a fungus-derived arthropsolide A: Mechanism of action and anti-diarrheal efficacy 2020transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Secretory diarrhea is one of the most common types of diarrhea with high morbidity and mortality. Previous studies showed that inhibition of cystic fibrosis transmembrane conductance regulator (CFTR) Cl- channels alleviated fluid loss in secretory diarrheas. This study aimed to identify novel CFTR inhibitors from fungal metabolites and explore its underlying mechanisms and potential utility in secretory diarrheas. Electrophysiological analyses in human intestinal epithelial (T84) cells were performed to investigate the effect and mechanism of fungal metabolites on CFTR-mediated Cl- secretion. Anti-diarrheal efficacy and the effect of compound on fluid absorption were investigated in mouse closed-loop models. We found that the screening identified arthropsolide A, a fungal metabolite from an endophytic fungus Roussoella sp. PSU-H51, as an inhibitor of CFTR-mediated Cl- secretion in T84 cells (IC50 ~0.8 μM). Arthropsolide A inhibited both CFTR and cAMP-activated basolateral K+ channels. Arthropsolide A had no effect on Na+-K+ ATPase activity. Interestingly, the inhibitory effect of arthropsolide A on CFTR was attenuated by cell depolarization and AMPK inhibition independent of multi-drug resistance protein 4, phosphodiesterases, and protein phosphatases. Importantly, arthropsolide A suppressed cholera toxin (CT)-induced Cl- secretion in T84 cells and CT-induced intestinal fluid secretion in mice by ~75% without affecting intestinal fluid absorption. Taken together, arthropsolide A represents a novel class of fungal metabolites that acts as a potent CFTR inhibitor. Further development of this class of compounds may provide a therapy for secretory diarrheas. Secretory diarrhea is one of the most common types of diarrhea with high morbidity and mortality. Previous studies showed that inhibition of cystic fibrosis transmembrane conductance regulator (CFTR) Cl- channels alleviated fluid loss in secretory diarrheas. This study aimed to identify novel CFTR inhibitors from fungal metabolites and explore its underlying mechanisms and potential utility in secretory diarrheas. Electrophysiological analyses in human intestinal epithelial (T84) cells were performed to investigate the effect and mechanism of fungal metabolites on CFTR-mediated Cl- secretion. Anti-diarrheal efficacy and the effect of compound on fluid absorption were investigated in mouse closed-loop models. We found that the screening identified arthropsolide A, a fungal metabolite from an endophytic fungus Roussoella sp. PSU-H51, as an inhibitor of CFTR-mediated Cl- secretion in T84 cells (IC50 ~0.8 μM). Arthropsolide A inhibited both CFTR and cAMP-activated basolateral K+ channels. Arthropsolide A had no effect on Na+-K+ ATPase activity. Interestingly, the inhibitory effect of arthropsolide A on CFTR was attenuated by cell depolarization and AMPK inhibition independent of multi-drug resistance protein 4, phosphodiesterases, and protein phosphatases. Importantly, arthropsolide A suppressed cholera toxin (CT)-induced Cl- secretion in T84 cells and CT-induced intestinal fluid secretion in mice by ~75% without affecting intestinal fluid absorption. Taken together, arthropsolide A represents a novel class of fungal metabolites that acts as a potent CFTR inhibitor. Further development of this class of compounds may provide a therapy for secretory diarrheas. Secretory diarrheas Elsevier Arthropsolide A Elsevier Cholera Elsevier CFTR Elsevier Chloride secretion Elsevier Satitsri, Saravut oth Sommart, Ubonta oth Rukachaisirikul, Vatcharin oth Muanprasat, Chatchai oth Enthalten in Elsevier López-Gopar, Mario E. ELSEVIER Mexican student-teachers’ “English” language praxicum: Decolonizing attempts 2022 EJP New York, NY [u.a.] (DE-627)ELV008405875 volume:885 year:2020 day:15 month:10 pages:0 https://doi.org/10.1016/j.ejphar.2020.173393 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U AR 885 2020 15 1015 0 |
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10.1016/j.ejphar.2020.173393 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001486.pica (DE-627)ELV051562448 (ELSEVIER)S0014-2999(20)30485-4 DE-627 ger DE-627 rakwb eng 370 VZ 5,3 ssgn Akrimajirachoote, Nattaphong verfasserin aut Inhibition of CFTR-mediated intestinal chloride secretion by a fungus-derived arthropsolide A: Mechanism of action and anti-diarrheal efficacy 2020transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Secretory diarrhea is one of the most common types of diarrhea with high morbidity and mortality. Previous studies showed that inhibition of cystic fibrosis transmembrane conductance regulator (CFTR) Cl- channels alleviated fluid loss in secretory diarrheas. This study aimed to identify novel CFTR inhibitors from fungal metabolites and explore its underlying mechanisms and potential utility in secretory diarrheas. Electrophysiological analyses in human intestinal epithelial (T84) cells were performed to investigate the effect and mechanism of fungal metabolites on CFTR-mediated Cl- secretion. Anti-diarrheal efficacy and the effect of compound on fluid absorption were investigated in mouse closed-loop models. We found that the screening identified arthropsolide A, a fungal metabolite from an endophytic fungus Roussoella sp. PSU-H51, as an inhibitor of CFTR-mediated Cl- secretion in T84 cells (IC50 ~0.8 μM). Arthropsolide A inhibited both CFTR and cAMP-activated basolateral K+ channels. Arthropsolide A had no effect on Na+-K+ ATPase activity. Interestingly, the inhibitory effect of arthropsolide A on CFTR was attenuated by cell depolarization and AMPK inhibition independent of multi-drug resistance protein 4, phosphodiesterases, and protein phosphatases. Importantly, arthropsolide A suppressed cholera toxin (CT)-induced Cl- secretion in T84 cells and CT-induced intestinal fluid secretion in mice by ~75% without affecting intestinal fluid absorption. Taken together, arthropsolide A represents a novel class of fungal metabolites that acts as a potent CFTR inhibitor. Further development of this class of compounds may provide a therapy for secretory diarrheas. Secretory diarrhea is one of the most common types of diarrhea with high morbidity and mortality. Previous studies showed that inhibition of cystic fibrosis transmembrane conductance regulator (CFTR) Cl- channels alleviated fluid loss in secretory diarrheas. This study aimed to identify novel CFTR inhibitors from fungal metabolites and explore its underlying mechanisms and potential utility in secretory diarrheas. Electrophysiological analyses in human intestinal epithelial (T84) cells were performed to investigate the effect and mechanism of fungal metabolites on CFTR-mediated Cl- secretion. Anti-diarrheal efficacy and the effect of compound on fluid absorption were investigated in mouse closed-loop models. We found that the screening identified arthropsolide A, a fungal metabolite from an endophytic fungus Roussoella sp. PSU-H51, as an inhibitor of CFTR-mediated Cl- secretion in T84 cells (IC50 ~0.8 μM). Arthropsolide A inhibited both CFTR and cAMP-activated basolateral K+ channels. Arthropsolide A had no effect on Na+-K+ ATPase activity. Interestingly, the inhibitory effect of arthropsolide A on CFTR was attenuated by cell depolarization and AMPK inhibition independent of multi-drug resistance protein 4, phosphodiesterases, and protein phosphatases. Importantly, arthropsolide A suppressed cholera toxin (CT)-induced Cl- secretion in T84 cells and CT-induced intestinal fluid secretion in mice by ~75% without affecting intestinal fluid absorption. Taken together, arthropsolide A represents a novel class of fungal metabolites that acts as a potent CFTR inhibitor. Further development of this class of compounds may provide a therapy for secretory diarrheas. Secretory diarrheas Elsevier Arthropsolide A Elsevier Cholera Elsevier CFTR Elsevier Chloride secretion Elsevier Satitsri, Saravut oth Sommart, Ubonta oth Rukachaisirikul, Vatcharin oth Muanprasat, Chatchai oth Enthalten in Elsevier López-Gopar, Mario E. ELSEVIER Mexican student-teachers’ “English” language praxicum: Decolonizing attempts 2022 EJP New York, NY [u.a.] (DE-627)ELV008405875 volume:885 year:2020 day:15 month:10 pages:0 https://doi.org/10.1016/j.ejphar.2020.173393 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U AR 885 2020 15 1015 0 |
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10.1016/j.ejphar.2020.173393 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001486.pica (DE-627)ELV051562448 (ELSEVIER)S0014-2999(20)30485-4 DE-627 ger DE-627 rakwb eng 370 VZ 5,3 ssgn Akrimajirachoote, Nattaphong verfasserin aut Inhibition of CFTR-mediated intestinal chloride secretion by a fungus-derived arthropsolide A: Mechanism of action and anti-diarrheal efficacy 2020transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Secretory diarrhea is one of the most common types of diarrhea with high morbidity and mortality. Previous studies showed that inhibition of cystic fibrosis transmembrane conductance regulator (CFTR) Cl- channels alleviated fluid loss in secretory diarrheas. This study aimed to identify novel CFTR inhibitors from fungal metabolites and explore its underlying mechanisms and potential utility in secretory diarrheas. Electrophysiological analyses in human intestinal epithelial (T84) cells were performed to investigate the effect and mechanism of fungal metabolites on CFTR-mediated Cl- secretion. Anti-diarrheal efficacy and the effect of compound on fluid absorption were investigated in mouse closed-loop models. We found that the screening identified arthropsolide A, a fungal metabolite from an endophytic fungus Roussoella sp. PSU-H51, as an inhibitor of CFTR-mediated Cl- secretion in T84 cells (IC50 ~0.8 μM). Arthropsolide A inhibited both CFTR and cAMP-activated basolateral K+ channels. Arthropsolide A had no effect on Na+-K+ ATPase activity. Interestingly, the inhibitory effect of arthropsolide A on CFTR was attenuated by cell depolarization and AMPK inhibition independent of multi-drug resistance protein 4, phosphodiesterases, and protein phosphatases. Importantly, arthropsolide A suppressed cholera toxin (CT)-induced Cl- secretion in T84 cells and CT-induced intestinal fluid secretion in mice by ~75% without affecting intestinal fluid absorption. Taken together, arthropsolide A represents a novel class of fungal metabolites that acts as a potent CFTR inhibitor. Further development of this class of compounds may provide a therapy for secretory diarrheas. Secretory diarrhea is one of the most common types of diarrhea with high morbidity and mortality. Previous studies showed that inhibition of cystic fibrosis transmembrane conductance regulator (CFTR) Cl- channels alleviated fluid loss in secretory diarrheas. This study aimed to identify novel CFTR inhibitors from fungal metabolites and explore its underlying mechanisms and potential utility in secretory diarrheas. Electrophysiological analyses in human intestinal epithelial (T84) cells were performed to investigate the effect and mechanism of fungal metabolites on CFTR-mediated Cl- secretion. Anti-diarrheal efficacy and the effect of compound on fluid absorption were investigated in mouse closed-loop models. We found that the screening identified arthropsolide A, a fungal metabolite from an endophytic fungus Roussoella sp. PSU-H51, as an inhibitor of CFTR-mediated Cl- secretion in T84 cells (IC50 ~0.8 μM). Arthropsolide A inhibited both CFTR and cAMP-activated basolateral K+ channels. Arthropsolide A had no effect on Na+-K+ ATPase activity. Interestingly, the inhibitory effect of arthropsolide A on CFTR was attenuated by cell depolarization and AMPK inhibition independent of multi-drug resistance protein 4, phosphodiesterases, and protein phosphatases. Importantly, arthropsolide A suppressed cholera toxin (CT)-induced Cl- secretion in T84 cells and CT-induced intestinal fluid secretion in mice by ~75% without affecting intestinal fluid absorption. Taken together, arthropsolide A represents a novel class of fungal metabolites that acts as a potent CFTR inhibitor. Further development of this class of compounds may provide a therapy for secretory diarrheas. Secretory diarrheas Elsevier Arthropsolide A Elsevier Cholera Elsevier CFTR Elsevier Chloride secretion Elsevier Satitsri, Saravut oth Sommart, Ubonta oth Rukachaisirikul, Vatcharin oth Muanprasat, Chatchai oth Enthalten in Elsevier López-Gopar, Mario E. ELSEVIER Mexican student-teachers’ “English” language praxicum: Decolonizing attempts 2022 EJP New York, NY [u.a.] (DE-627)ELV008405875 volume:885 year:2020 day:15 month:10 pages:0 https://doi.org/10.1016/j.ejphar.2020.173393 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U AR 885 2020 15 1015 0 |
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10.1016/j.ejphar.2020.173393 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001486.pica (DE-627)ELV051562448 (ELSEVIER)S0014-2999(20)30485-4 DE-627 ger DE-627 rakwb eng 370 VZ 5,3 ssgn Akrimajirachoote, Nattaphong verfasserin aut Inhibition of CFTR-mediated intestinal chloride secretion by a fungus-derived arthropsolide A: Mechanism of action and anti-diarrheal efficacy 2020transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Secretory diarrhea is one of the most common types of diarrhea with high morbidity and mortality. Previous studies showed that inhibition of cystic fibrosis transmembrane conductance regulator (CFTR) Cl- channels alleviated fluid loss in secretory diarrheas. This study aimed to identify novel CFTR inhibitors from fungal metabolites and explore its underlying mechanisms and potential utility in secretory diarrheas. Electrophysiological analyses in human intestinal epithelial (T84) cells were performed to investigate the effect and mechanism of fungal metabolites on CFTR-mediated Cl- secretion. Anti-diarrheal efficacy and the effect of compound on fluid absorption were investigated in mouse closed-loop models. We found that the screening identified arthropsolide A, a fungal metabolite from an endophytic fungus Roussoella sp. PSU-H51, as an inhibitor of CFTR-mediated Cl- secretion in T84 cells (IC50 ~0.8 μM). Arthropsolide A inhibited both CFTR and cAMP-activated basolateral K+ channels. Arthropsolide A had no effect on Na+-K+ ATPase activity. Interestingly, the inhibitory effect of arthropsolide A on CFTR was attenuated by cell depolarization and AMPK inhibition independent of multi-drug resistance protein 4, phosphodiesterases, and protein phosphatases. Importantly, arthropsolide A suppressed cholera toxin (CT)-induced Cl- secretion in T84 cells and CT-induced intestinal fluid secretion in mice by ~75% without affecting intestinal fluid absorption. Taken together, arthropsolide A represents a novel class of fungal metabolites that acts as a potent CFTR inhibitor. Further development of this class of compounds may provide a therapy for secretory diarrheas. Secretory diarrhea is one of the most common types of diarrhea with high morbidity and mortality. Previous studies showed that inhibition of cystic fibrosis transmembrane conductance regulator (CFTR) Cl- channels alleviated fluid loss in secretory diarrheas. This study aimed to identify novel CFTR inhibitors from fungal metabolites and explore its underlying mechanisms and potential utility in secretory diarrheas. Electrophysiological analyses in human intestinal epithelial (T84) cells were performed to investigate the effect and mechanism of fungal metabolites on CFTR-mediated Cl- secretion. Anti-diarrheal efficacy and the effect of compound on fluid absorption were investigated in mouse closed-loop models. We found that the screening identified arthropsolide A, a fungal metabolite from an endophytic fungus Roussoella sp. PSU-H51, as an inhibitor of CFTR-mediated Cl- secretion in T84 cells (IC50 ~0.8 μM). Arthropsolide A inhibited both CFTR and cAMP-activated basolateral K+ channels. Arthropsolide A had no effect on Na+-K+ ATPase activity. Interestingly, the inhibitory effect of arthropsolide A on CFTR was attenuated by cell depolarization and AMPK inhibition independent of multi-drug resistance protein 4, phosphodiesterases, and protein phosphatases. Importantly, arthropsolide A suppressed cholera toxin (CT)-induced Cl- secretion in T84 cells and CT-induced intestinal fluid secretion in mice by ~75% without affecting intestinal fluid absorption. Taken together, arthropsolide A represents a novel class of fungal metabolites that acts as a potent CFTR inhibitor. Further development of this class of compounds may provide a therapy for secretory diarrheas. Secretory diarrheas Elsevier Arthropsolide A Elsevier Cholera Elsevier CFTR Elsevier Chloride secretion Elsevier Satitsri, Saravut oth Sommart, Ubonta oth Rukachaisirikul, Vatcharin oth Muanprasat, Chatchai oth Enthalten in Elsevier López-Gopar, Mario E. ELSEVIER Mexican student-teachers’ “English” language praxicum: Decolonizing attempts 2022 EJP New York, NY [u.a.] (DE-627)ELV008405875 volume:885 year:2020 day:15 month:10 pages:0 https://doi.org/10.1016/j.ejphar.2020.173393 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U AR 885 2020 15 1015 0 |
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10.1016/j.ejphar.2020.173393 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001486.pica (DE-627)ELV051562448 (ELSEVIER)S0014-2999(20)30485-4 DE-627 ger DE-627 rakwb eng 370 VZ 5,3 ssgn Akrimajirachoote, Nattaphong verfasserin aut Inhibition of CFTR-mediated intestinal chloride secretion by a fungus-derived arthropsolide A: Mechanism of action and anti-diarrheal efficacy 2020transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Secretory diarrhea is one of the most common types of diarrhea with high morbidity and mortality. Previous studies showed that inhibition of cystic fibrosis transmembrane conductance regulator (CFTR) Cl- channels alleviated fluid loss in secretory diarrheas. This study aimed to identify novel CFTR inhibitors from fungal metabolites and explore its underlying mechanisms and potential utility in secretory diarrheas. Electrophysiological analyses in human intestinal epithelial (T84) cells were performed to investigate the effect and mechanism of fungal metabolites on CFTR-mediated Cl- secretion. Anti-diarrheal efficacy and the effect of compound on fluid absorption were investigated in mouse closed-loop models. We found that the screening identified arthropsolide A, a fungal metabolite from an endophytic fungus Roussoella sp. PSU-H51, as an inhibitor of CFTR-mediated Cl- secretion in T84 cells (IC50 ~0.8 μM). Arthropsolide A inhibited both CFTR and cAMP-activated basolateral K+ channels. Arthropsolide A had no effect on Na+-K+ ATPase activity. Interestingly, the inhibitory effect of arthropsolide A on CFTR was attenuated by cell depolarization and AMPK inhibition independent of multi-drug resistance protein 4, phosphodiesterases, and protein phosphatases. Importantly, arthropsolide A suppressed cholera toxin (CT)-induced Cl- secretion in T84 cells and CT-induced intestinal fluid secretion in mice by ~75% without affecting intestinal fluid absorption. Taken together, arthropsolide A represents a novel class of fungal metabolites that acts as a potent CFTR inhibitor. Further development of this class of compounds may provide a therapy for secretory diarrheas. Secretory diarrhea is one of the most common types of diarrhea with high morbidity and mortality. Previous studies showed that inhibition of cystic fibrosis transmembrane conductance regulator (CFTR) Cl- channels alleviated fluid loss in secretory diarrheas. This study aimed to identify novel CFTR inhibitors from fungal metabolites and explore its underlying mechanisms and potential utility in secretory diarrheas. Electrophysiological analyses in human intestinal epithelial (T84) cells were performed to investigate the effect and mechanism of fungal metabolites on CFTR-mediated Cl- secretion. Anti-diarrheal efficacy and the effect of compound on fluid absorption were investigated in mouse closed-loop models. We found that the screening identified arthropsolide A, a fungal metabolite from an endophytic fungus Roussoella sp. PSU-H51, as an inhibitor of CFTR-mediated Cl- secretion in T84 cells (IC50 ~0.8 μM). Arthropsolide A inhibited both CFTR and cAMP-activated basolateral K+ channels. Arthropsolide A had no effect on Na+-K+ ATPase activity. Interestingly, the inhibitory effect of arthropsolide A on CFTR was attenuated by cell depolarization and AMPK inhibition independent of multi-drug resistance protein 4, phosphodiesterases, and protein phosphatases. Importantly, arthropsolide A suppressed cholera toxin (CT)-induced Cl- secretion in T84 cells and CT-induced intestinal fluid secretion in mice by ~75% without affecting intestinal fluid absorption. Taken together, arthropsolide A represents a novel class of fungal metabolites that acts as a potent CFTR inhibitor. Further development of this class of compounds may provide a therapy for secretory diarrheas. Secretory diarrheas Elsevier Arthropsolide A Elsevier Cholera Elsevier CFTR Elsevier Chloride secretion Elsevier Satitsri, Saravut oth Sommart, Ubonta oth Rukachaisirikul, Vatcharin oth Muanprasat, Chatchai oth Enthalten in Elsevier López-Gopar, Mario E. ELSEVIER Mexican student-teachers’ “English” language praxicum: Decolonizing attempts 2022 EJP New York, NY [u.a.] (DE-627)ELV008405875 volume:885 year:2020 day:15 month:10 pages:0 https://doi.org/10.1016/j.ejphar.2020.173393 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U AR 885 2020 15 1015 0 |
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Inhibition of CFTR-mediated intestinal chloride secretion by a fungus-derived arthropsolide A: Mechanism of action and anti-diarrheal efficacy |
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Secretory diarrhea is one of the most common types of diarrhea with high morbidity and mortality. Previous studies showed that inhibition of cystic fibrosis transmembrane conductance regulator (CFTR) Cl- channels alleviated fluid loss in secretory diarrheas. This study aimed to identify novel CFTR inhibitors from fungal metabolites and explore its underlying mechanisms and potential utility in secretory diarrheas. Electrophysiological analyses in human intestinal epithelial (T84) cells were performed to investigate the effect and mechanism of fungal metabolites on CFTR-mediated Cl- secretion. Anti-diarrheal efficacy and the effect of compound on fluid absorption were investigated in mouse closed-loop models. We found that the screening identified arthropsolide A, a fungal metabolite from an endophytic fungus Roussoella sp. PSU-H51, as an inhibitor of CFTR-mediated Cl- secretion in T84 cells (IC50 ~0.8 μM). Arthropsolide A inhibited both CFTR and cAMP-activated basolateral K+ channels. Arthropsolide A had no effect on Na+-K+ ATPase activity. Interestingly, the inhibitory effect of arthropsolide A on CFTR was attenuated by cell depolarization and AMPK inhibition independent of multi-drug resistance protein 4, phosphodiesterases, and protein phosphatases. Importantly, arthropsolide A suppressed cholera toxin (CT)-induced Cl- secretion in T84 cells and CT-induced intestinal fluid secretion in mice by ~75% without affecting intestinal fluid absorption. Taken together, arthropsolide A represents a novel class of fungal metabolites that acts as a potent CFTR inhibitor. Further development of this class of compounds may provide a therapy for secretory diarrheas. |
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Secretory diarrhea is one of the most common types of diarrhea with high morbidity and mortality. Previous studies showed that inhibition of cystic fibrosis transmembrane conductance regulator (CFTR) Cl- channels alleviated fluid loss in secretory diarrheas. This study aimed to identify novel CFTR inhibitors from fungal metabolites and explore its underlying mechanisms and potential utility in secretory diarrheas. Electrophysiological analyses in human intestinal epithelial (T84) cells were performed to investigate the effect and mechanism of fungal metabolites on CFTR-mediated Cl- secretion. Anti-diarrheal efficacy and the effect of compound on fluid absorption were investigated in mouse closed-loop models. We found that the screening identified arthropsolide A, a fungal metabolite from an endophytic fungus Roussoella sp. PSU-H51, as an inhibitor of CFTR-mediated Cl- secretion in T84 cells (IC50 ~0.8 μM). Arthropsolide A inhibited both CFTR and cAMP-activated basolateral K+ channels. Arthropsolide A had no effect on Na+-K+ ATPase activity. Interestingly, the inhibitory effect of arthropsolide A on CFTR was attenuated by cell depolarization and AMPK inhibition independent of multi-drug resistance protein 4, phosphodiesterases, and protein phosphatases. Importantly, arthropsolide A suppressed cholera toxin (CT)-induced Cl- secretion in T84 cells and CT-induced intestinal fluid secretion in mice by ~75% without affecting intestinal fluid absorption. Taken together, arthropsolide A represents a novel class of fungal metabolites that acts as a potent CFTR inhibitor. Further development of this class of compounds may provide a therapy for secretory diarrheas. |
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Secretory diarrhea is one of the most common types of diarrhea with high morbidity and mortality. Previous studies showed that inhibition of cystic fibrosis transmembrane conductance regulator (CFTR) Cl- channels alleviated fluid loss in secretory diarrheas. This study aimed to identify novel CFTR inhibitors from fungal metabolites and explore its underlying mechanisms and potential utility in secretory diarrheas. Electrophysiological analyses in human intestinal epithelial (T84) cells were performed to investigate the effect and mechanism of fungal metabolites on CFTR-mediated Cl- secretion. Anti-diarrheal efficacy and the effect of compound on fluid absorption were investigated in mouse closed-loop models. We found that the screening identified arthropsolide A, a fungal metabolite from an endophytic fungus Roussoella sp. PSU-H51, as an inhibitor of CFTR-mediated Cl- secretion in T84 cells (IC50 ~0.8 μM). Arthropsolide A inhibited both CFTR and cAMP-activated basolateral K+ channels. Arthropsolide A had no effect on Na+-K+ ATPase activity. Interestingly, the inhibitory effect of arthropsolide A on CFTR was attenuated by cell depolarization and AMPK inhibition independent of multi-drug resistance protein 4, phosphodiesterases, and protein phosphatases. Importantly, arthropsolide A suppressed cholera toxin (CT)-induced Cl- secretion in T84 cells and CT-induced intestinal fluid secretion in mice by ~75% without affecting intestinal fluid absorption. Taken together, arthropsolide A represents a novel class of fungal metabolites that acts as a potent CFTR inhibitor. Further development of this class of compounds may provide a therapy for secretory diarrheas. |
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