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A 2-Pyridone-Amide Inhibitor Targets the Glucose Metabolism Pathway of Chlamydia trachomatis
Umeå universitet, Medicinska fakulteten, Institutionen för molekylärbiologi (Medicinska fakulteten). Umeå universitet, Medicinska fakulteten, Molekylär Infektionsmedicin, Sverige (MIMS). Umeå universitet, Medicinska fakulteten, Umeå Centre for Microbial Research (UCMR).
Umeå universitet, Medicinska fakulteten, Umeå Centre for Microbial Research (UCMR). Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Kemiska institutionen.
Umeå universitet, Medicinska fakulteten, Umeå Centre for Microbial Research (UCMR). Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Kemiska institutionen.
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2015 (Engelska)Ingår i: mBio, ISSN 2161-2129, E-ISSN 2150-7511, Vol. 6, nr 1, artikel-id e02304-14Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

In a screen for compounds that inhibit infectivity of the obligate intracellular pathogen Chlamydia trachomatis, we identified the 2-pyridone amide KSK120. A fluorescent KSK120 analogue was synthesized and observed to be associated with the C. trachomatis surface, suggesting that its target is bacterial. We isolated KSK120-resistant strains and determined that several resistance mutations are in genes that affect the uptake and use of glucose-6-phosphate (G-6P). Consistent with an effect on G-6P metabolism, treatment with KSK120 blocked glycogen accumulation. Interestingly, KSK120 did not affect Escherichia coli or the host cell. Thus, 2-pyridone amides may represent a class of drugs that can specifically inhibit C. trachomatis infection. IMPORTANCE Chlamydia trachomatis is a bacterial pathogen of humans that causes a common sexually transmitted disease as well as eye infections. It grows only inside cells of its host organism, within a parasitophorous vacuole termed the inclusion. Little is known, however, about what bacterial components and processes are important for C. trachomatis cellular infectivity. Here, by using a visual screen for compounds that affect bacterial distribution within the chlamydial inclusion, we identified the inhibitor KSK120. As hypothesized, the altered bacterial distribution induced by KSK120 correlated with a block in C. trachomatis infectivity. Our data suggest that the compound targets the glucose-6-phosphate (G-6P) metabolism pathway of C. trachomatis, supporting previous indications that G-6P metabolism is critical for C. trachomatis infectivity. Thus, KSK120 may be a useful tool to study chlamydial glucose metabolism and has the potential to be used in the treatment of C. trachomatis infections.

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2015. Vol. 6, nr 1, artikel-id e02304-14
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Mikrobiologi inom det medicinska området
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URN: urn:nbn:se:umu:diva-102254DOI: 10.1128/mBio.02304-14ISI: 000350631900021PubMedID: 25550323OAI: oai:DiVA.org:umu-102254DiVA, id: diva2:807131
Tillgänglig från: 2015-04-22 Skapad: 2015-04-22 Senast uppdaterad: 2018-06-07Bibliografiskt granskad

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Chorell, ErikNormark, JohanSilver, JimWolf-Watz, HansAlmqvist, FredrikBergström, Sven

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Chorell, ErikNormark, JohanSilver, JimWolf-Watz, HansAlmqvist, FredrikBergström, Sven
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Institutionen för molekylärbiologi (Medicinska fakulteten)Molekylär Infektionsmedicin, Sverige (MIMS)Umeå Centre for Microbial Research (UCMR)Kemiska institutionen
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