Cytotoxic Activity of a Unique Monomeric Heterogeneous Two-Coordinate Ligand Monovalent Gold Complex with Tiopronin and a Heterocyclic Mercapto-Tetrazole Compound

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BACKGROUND: The importance of the role of NF-κB is recognized in situations such as malignant transformation and metastasis of cancer, and it has been suggested that inhibiting this role can be one of the cancer treatment strategies. Gold preparations such as auranofin are known to have an indirect NF-κB inhibitory effect.

OBJECTIVE: We synthesized a novel gold complex [tiopronin monovalent gold-5-mercapto- 1-methyl tetrazole, abbreviated as TPN-Au(I)-MM4], with different physical properties and chemical structure from auranofin, and evaluated its cytotoxic activity and radiation sensitizing effect on human THP1 cells.

METHODS: The number of viable cells was counted by the trypan blue dye exclusion method. The cell death evaluation was performed by FITC-Annexin V+ and PI staining. In investigating the radiation sensitizing effect of TPN-Au(I)-MM4, this compound [10 or 25 μM] was added into the culture medium 1 h before X-ray irradiation.

RESULTS: In the cells treated with 25 μM TPN-Au(I)-MM4 for 72 h, a decrease in the proliferation of THP1 cells was observed [The relative values of viable cells in the control group and the 25 μM treatment group were approximately 6.8 and 4.2, respectively]. In the combination of 25 μM of the compound treatment and X-ray irradiation, an increase of approximately 3.0-fold was observed in 2 Gy irradiation and approximately 1.4-fold in 4 Gy irradiation as in comparison to the case of irradiation alone.

CONCLUSION: These results suggest that TPN-Au(I)-MM4 reduces the proliferation of THP1 cells through the induction of cell death, and the combined use of TPN-Au(I)-MM4 and X-ray irradiation shows effective cytotoxicity against THP1 cells.

Medienart:

E-Artikel

Erscheinungsjahr:

2022

Erschienen:

2022

Enthalten in:

Zur Gesamtaufnahme - volume:29

Enthalten in:

Current medicinal chemistry - 29(2022), 22 vom: 17., Seite 3973-3982

Sprache:

Englisch

Beteiligte Personen:

Sano, Naoyuki [VerfasserIn]
Yoshino, Hironori [VerfasserIn]
Sato, Yoshiaki [VerfasserIn]
Honma, Hideo [VerfasserIn]
Cordonier, Christopher E J [VerfasserIn]
Kashiwakura, Ikuo [VerfasserIn]

Links:

Volltext

Themen:

3H04W2810V
7440-57-5
Antineoplastic Agents
Auranofin
C5W04GO61S
Gold
Gold complex
Heterocyclic Compounds
Human thp1 cells
Induction of cell death
Journal Article
Ligands
NF-kappa B
Radiation sensitizing effect
Radiation-Sensitizing Agents
Reduces the proliferation
Tetrazoles
Tiopronin
Tpn-au[I]-mm4

Anmerkungen:

Date Completed 10.06.2022

Date Revised 10.06.2022

published: Print

Citation Status MEDLINE

doi:

10.2174/0929867328666211018094206

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM332068870