Role of Glutathione in Chalcone Derivative Induced Apoptosis of Brugia malayi and its Possible Therapeutic Implication

PURPOSE: Oxidative stress is an essential component of innate response against microbes. The oxidative impact has a very subtle connection with apoptosis. Our previous work indicated presumptive evidence of apoptosis by the chalcone derivatives against the human lymphatic filarial parasite. Evidence suggests the involvement of glutathione-S-transferase (GST) in the mechanism of action of chalcone drugs. In the present study, we explored the implications of redox status in apoptosis of the parasite by this drug.

RESULTS: Treatment with the representative drug, 4t, significantly decreased GSH level and increased GST activity in the Brugia malayi microfilariae (Mf) in comparison to Mf without 4t treatment. Drug-induced loss of motility of the parasites was reversed by the treatment with GSH (41%) and NAC (19%). A significant fall in rGST activity was observed due to drug addition, which could be reversed by the addition of GSH co-substrate, but not with the re-addition of rGST, indicating a vital role of GSH. In silico study demonstrated a favorable drug-GST enzyme interaction. Oxidative stress was reflected by increased protein carbonylation and intracellular reactive oxygen species level, in the drug-treated parasite. Mitochondrial oxygen consumption was reduced by the drug, which was reversed on the addition of GSH. Mitochondrial dysfunction was confirmed by MTT and cytochrome c assay. Apoptosis was confirmed by the inhibition in PARP activity.

CONCLUSION: We conclude that the depletion of GSH by chalcone with concomitant mitochondrial dysfunction revealed a novel rationale of apoptosis in the parasite. Such a mechanism might have wide therapeutic implications.

Medienart:

E-Artikel

Erscheinungsjahr:

2021

Erschienen:

2021

Enthalten in:

Zur Gesamtaufnahme - volume:66

Enthalten in:

Acta parasitologica - 66(2021), 2 vom: 10. Juni, Seite 406-415

Sprache:

Englisch

Beteiligte Personen:

Bhoj, P S [VerfasserIn]
Bahekar, S [VerfasserIn]
Khatri, V [VerfasserIn]
Singh, N [VerfasserIn]
Togre, N S [VerfasserIn]
Goswami, K [VerfasserIn]
Chandak, H S [VerfasserIn]
Dash, D [VerfasserIn]

Links:

Volltext

Themen:

5S5A2Q39HX
Apoptosis
Chalcone
Chalcones
Filarial parasite
GAN16C9B8O
Glutathione
Journal Article
Mitochondria
Sulfonamide chalcone

Anmerkungen:

Date Completed 30.07.2021

Date Revised 30.07.2021

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1007/s11686-020-00291-2

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM316078808