Investigation of Siderophore-Platinum(IV) Conjugates Reveals Differing Antibacterial Activity and DNA Damage Depending on the Platinum Cargo
The growing threat of bacterial infections coupled with the dwindling arsenal of effective antibiotics has heightened the urgency for innovative strategies to combat bacterial pathogens, particularly Gram-negative strains, which pose a significant challenge due to their outer membrane permeability barrier. In this study, we repurpose clinically approved anticancer agents as targeted antibacterials. We report two new siderophore-platinum(IV) conjugates, both of which consist of an oxaliplatin-based Pt(IV) prodrug (oxPt(IV)) conjugated to enterobactin (Ent), a triscatecholate siderophore employed by Enterobacteriaceae for iron acquisition. We demonstrate that l/d-Ent-oxPt(IV) (l/d-EOP) are selectively delivered into the Escherichia coli cytoplasm, achieving targeted antibacterial activity, causing filamentous morphology, and leading to enhanced Pt uptake by bacterial cells but reduced Pt uptake by human cells. d-EOP exhibits enhanced potency compared to oxaliplatin and l-EOP, primarily attributed to the intrinsic antibacterial activity of its non-native siderophore moiety. To further elucidate the antibacterial activity of Ent-Pt(IV) conjugates, we probed DNA damage caused by l/d-EOP and the previously reported cisplatin-based conjugates l/d-Ent-Pt(IV) (l/d-EP). A comparative analysis of these four conjugates reveals a correlation between antibacterial activity and the ability to induce DNA damage. This work expands the scope of Pt cargos targeted to the cytoplasm of Gram-negative bacteria via Ent conjugation, provides insight into the cellular consequences of Ent-Pt(IV) conjugates in E. coli, and furthers our understanding of the potential of Pt-based therapeutics for antibacterial applications.
| Medienart: |
E-Artikel |
|---|
| Erscheinungsjahr: |
2024 |
|---|---|
| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:10 |
|---|---|
| Enthalten in: |
ACS infectious diseases - 10(2024), 4 vom: 12. Apr., Seite 1250-1266 |
| Sprache: |
Englisch |
|---|
| Beteiligte Personen: |
Guo, Chuchu [VerfasserIn] |
|---|
| Links: |
|---|
| Themen: |
04ZR38536J |
|---|
| Anmerkungen: |
Date Completed 15.04.2024 Date Revised 15.04.2024 published: Print-Electronic Citation Status MEDLINE |
|---|
| doi: |
10.1021/acsinfecdis.3c00686 |
|---|
| funding: |
|
|---|---|
| Förderinstitution / Projekttitel: |
|
| PPN (Katalog-ID): |
NLM369264584 |
|---|
| LEADER | 01000caa a22002652 4500 | ||
|---|---|---|---|
| 001 | NLM369264584 | ||
| 003 | DE-627 | ||
| 005 | 20240415233323.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 240304s2024 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.1021/acsinfecdis.3c00686 |2 doi | |
| 028 | 5 | 2 | |a pubmed24n1376.xml |
| 035 | |a (DE-627)NLM369264584 | ||
| 035 | |a (NLM)38436588 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rakwb | ||
| 041 | |a eng | ||
| 100 | 1 | |a Guo, Chuchu |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Investigation of Siderophore-Platinum(IV) Conjugates Reveals Differing Antibacterial Activity and DNA Damage Depending on the Platinum Cargo |
| 264 | 1 | |c 2024 | |
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a ƒaComputermedien |b c |2 rdamedia | ||
| 338 | |a ƒa Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Date Completed 15.04.2024 | ||
| 500 | |a Date Revised 15.04.2024 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a The growing threat of bacterial infections coupled with the dwindling arsenal of effective antibiotics has heightened the urgency for innovative strategies to combat bacterial pathogens, particularly Gram-negative strains, which pose a significant challenge due to their outer membrane permeability barrier. In this study, we repurpose clinically approved anticancer agents as targeted antibacterials. We report two new siderophore-platinum(IV) conjugates, both of which consist of an oxaliplatin-based Pt(IV) prodrug (oxPt(IV)) conjugated to enterobactin (Ent), a triscatecholate siderophore employed by Enterobacteriaceae for iron acquisition. We demonstrate that l/d-Ent-oxPt(IV) (l/d-EOP) are selectively delivered into the Escherichia coli cytoplasm, achieving targeted antibacterial activity, causing filamentous morphology, and leading to enhanced Pt uptake by bacterial cells but reduced Pt uptake by human cells. d-EOP exhibits enhanced potency compared to oxaliplatin and l-EOP, primarily attributed to the intrinsic antibacterial activity of its non-native siderophore moiety. To further elucidate the antibacterial activity of Ent-Pt(IV) conjugates, we probed DNA damage caused by l/d-EOP and the previously reported cisplatin-based conjugates l/d-Ent-Pt(IV) (l/d-EP). A comparative analysis of these four conjugates reveals a correlation between antibacterial activity and the ability to induce DNA damage. This work expands the scope of Pt cargos targeted to the cytoplasm of Gram-negative bacteria via Ent conjugation, provides insight into the cellular consequences of Ent-Pt(IV) conjugates in E. coli, and furthers our understanding of the potential of Pt-based therapeutics for antibacterial applications | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Gram-negative antibiotics | |
| 650 | 4 | |a cisplatin | |
| 650 | 4 | |a drug repurposing | |
| 650 | 4 | |a enterobactin | |
| 650 | 4 | |a oxaliplatin | |
| 650 | 4 | |a siderophore conjugates | |
| 650 | 7 | |a Siderophores |2 NLM | |
| 650 | 7 | |a Platinum |2 NLM | |
| 650 | 7 | |a 49DFR088MY |2 NLM | |
| 650 | 7 | |a Oxaliplatin |2 NLM | |
| 650 | 7 | |a 04ZR38536J |2 NLM | |
| 650 | 7 | |a Anti-Bacterial Agents |2 NLM | |
| 650 | 7 | |a Enterobactin |2 NLM | |
| 650 | 7 | |a 28384-96-5 |2 NLM | |
| 700 | 1 | |a Wang, Kwo-Kwang A |e verfasserin |4 aut | |
| 700 | 1 | |a Nolan, Elizabeth M |e verfasserin |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t ACS infectious diseases |d 2015 |g 10(2024), 4 vom: 12. Apr., Seite 1250-1266 |w (DE-627)NLM248280775 |x 2373-8227 |7 nnns |
| 773 | 1 | 8 | |g volume:10 |g year:2024 |g number:4 |g day:12 |g month:04 |g pages:1250-1266 |
| 856 | 4 | 0 | |u http://dx.doi.org/10.1021/acsinfecdis.3c00686 |3 Volltext |
| 912 | |a GBV_USEFLAG_A | ||
| 912 | |a GBV_NLM | ||
| 951 | |a AR | ||
| 952 | |d 10 |j 2024 |e 4 |b 12 |c 04 |h 1250-1266 | ||