Cysteamine/Cystamine Exert Anti-Mycobacterium abscessus Activity Alone or in Combination with Amikacin

Host-directed therapies are emerging as a promising tool in the curing of difficult-to-treat infections, such as those caused by drug-resistant bacteria. In this study, we aim to test the potential activity of the FDA- and EMA-approved drugs cysteamine and cystamine against Mycobacterium abscessus. In human macrophages (differentiated THP-1 cells), these drugs restricted M. abscessus growth similar to that achieved by amikacin. Here, we use the human ex vivo granuloma-like structures (GLS) model of infection with the M. abscessus rough (MAB-R) and smooth (MAB-S) variants to study the activity of new therapies against M. abscessus. We demonstrate that cysteamine and cystamine show a decrease in the number of total GLSs per well in the MAB-S and MAB-R infected human peripheral blood mononuclear cells (PBMCs). Furthermore, combined administration of cysteamine or cystamine with amikacin resulted in enhanced activity against the two M. abscessus morpho variants compared to treatment with amikacin only. Treatment with cysteamine and cystamine was more effective in reducing GLS size and bacterial load during MAB-S infection compared with MAB-R infection. Moreover, treatment with these two drugs drastically quenched the exuberant proinflammatory response triggered by the MAB-R variant. These findings showing the activity of cysteamine and cystamine against the R and S M. abscessus morphotypes support the use of these drugs as novel host-directed therapies against M. abscessus infections.

Medienart:

E-Artikel

Erscheinungsjahr:

2023

Erschienen:

2023

Enthalten in:

Zur Gesamtaufnahme - volume:24

Enthalten in:

International journal of molecular sciences - 24(2023), 2 vom: 07. Jan.

Sprache:

Englisch

Beteiligte Personen:

Palucci, Ivana [VerfasserIn]
Salustri, Alessandro [VerfasserIn]
De Maio, Flavio [VerfasserIn]
Pereyra Boza, Maria Del Carmen [VerfasserIn]
Paglione, Francesco [VerfasserIn]
Sali, Michela [VerfasserIn]
Occhigrossi, Luca [VerfasserIn]
D'Eletto, Manuela [VerfasserIn]
Rossin, Federica [VerfasserIn]
Goletti, Delia [VerfasserIn]
Sanguinetti, Maurizio [VerfasserIn]
Piacentini, Mauro [VerfasserIn]
Delogu, Giovanni [VerfasserIn]

Links:

Volltext

Themen:

5UX2SD1KE2
84319SGC3C
Amikacin
Anti-Bacterial Agents
Cystamine
Cysteamine
Host-directed therapies
Journal Article
Mycobacterium abscessus
R110LV8L02
Transglutaminase-2

Anmerkungen:

Date Completed 24.01.2023

Date Revised 01.02.2023

published: Electronic

Citation Status MEDLINE

doi:

10.3390/ijms24021203

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM351854371