BSS-Et
BSS-Et is a near-infrared phototheranostic agent that serves as one of the two release units of hypoxia-responsive prodrug BNNC, responsible for generating photodynamic therapy (PDT) and photothermal therapy (PTT) effects at tumor sites. BSS-Et produces reactive oxygen species and singlet oxygen upon irradiation, inducing oxidative stress and DNA damage. When combined with (R)-CR8 (HY-18340), BSS-Et enhances DNA damage and apoptosis in breast cancer cells. BSS-Et can be used in breast cancer-related research.
For research use only. We do not sell to patients.
- CAS No.: 2825003-94-7
- Formula: C33H31ClN4O3
- Molecular Weight:567.08
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Storage:
Please store the product under the recommended conditions in the Certificate of Analysis.
All DNA/RNA Synthesis Isoforms
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Biological Activity
BSS-Et (30 μM; 1.5 h) induces reactive oxygen species generation in hypoxic 4T1 mouse breast cancer cells upon 808 nm laser irradiation at 1.5 W·cm−2 for 5 min[1].
BSS-Et (30 μM; 2 h) reduces viability of hypoxic 4T1 mouse breast cancer cells when combined with 808 nm laser irradiation at 1.5 W·cm−2 for 5 min[1].
BSS-Et (30 μM; 2 h) induces DNA double-strand breaks in hypoxic 4T1 mouse breast cancer cells when combined with 808 nm laser irradiation at 1.5 W·cm−2 for 5 min[1].
BSS-Et (30 μM; 2 h) reduces mitochondrial membrane potential and induces apoptosis in hypoxic 4T1 mouse breast cancer cells when combined with 808 nm laser irradiation at 1.5 W·cm−2 for 5 min[1].
BSS-Et (30 μM; 2 h) induces mitochondrial permeability transition pore opening and apoptosis in hypoxic 4T1 mouse breast cancer cells when combined with 808 nm laser irradiation at 1.5 W·cm−2 for 5 min[1].
BSS-Et (30 μM; 2 h) induces apoptosis in 40.2% of hypoxic 4T1 mouse breast cancer cells when combined with 808 nm laser irradiation at 1.5 W·cm−2 for 5 min[1].
BSS-Et (30 μM; 2 h) increases γ-H2AX (1.6-fold) and Cleaved Caspase-3 (1.3-fold) expression in hypoxic 4T1 mouse breast cancer cells when combined with 808 nm laser irradiation at 1.5 W·cm−2 for 5 min, indicating enhanced DNA damage and apoptosis[1].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Cell Line:mouse breast cancer 4T1 cells
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Concentration:30 μM
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Incubation Time:2 h; 808 nm laser at 1.5 W·cm-2 for 5 min, followed by 22 h culture
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Result:Showed a marked increase in red PI fluorescence (dead cells) and decrease in green Calcein-AM fluorescence (live cells) compared to non-irradiated BSS-Et-treated cells.
Exhibited a less pronounced effect than with BNNC + laser treatment.
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Cell Line:mouse breast cancer 4T1 cells
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Concentration:30 μM
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Incubation Time:2 h; 808 nm laser at 1.5 W·cm-2 for 5 min, followed by 22 h culture
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Result:Showed pronounced red γ-H2AX fluorescence, indicating DNA double-strand break formation.
Had fluorescence intensity lower than that observed in irradiated BNNC-treated cells but higher than control cells.
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Cell Line:mouse breast cancer 4T1 cells
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Concentration:30 μM
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Incubation Time:2 h; 808 nm laser at 1.5 W·cm-2 for 5 min, followed by 22 h culture
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Result:Showed a shift from red JC-1 aggregate fluorescence to green JC-1 monomer fluorescence, indicating decreased mitochondrial membrane potential and initiation of apoptosis.
Exhibited a lower magnitude of change compared to irradiated BNNC-treated cells.\nShowed reduced Calcein-AM fluorescence, indicating increased mPTP opening and apoptosis.
Exhibited a lower magnitude of change compared to irradiated BNNC-treated cells.\nShowed 16.5% early apoptotic cells and 23.7% late apoptotic/necrotic cells, totaling 40.2% apoptotic cells.
Had a lower total apoptotic cell percentage than irradiated BNNC-treated cells.
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Cell Line:mouse breast cancer 4T1 cells
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Concentration:30 μM
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Incubation Time:2 h; 808 nm laser at 1.5 W·cm-2 for 5 min
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Result:Showed a 1.6-fold increase in relative γ-H2AX expression compared to control cells.
Showed a 1.3-fold increase in relative Cleaved Caspase-3 expression compared to control cells.
Had lower expression levels than those observed in irradiated BNNC-treated cells.
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Animal Model:BALB/c (female, 7-8 weeks old, subcutaneous 4T1 breast cancer model)[1]
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Dosage:30 μM
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Administration:i.t.; every other day; 21 days
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Result:Showed rapid tumor progression similar to saline control when administered alone without laser irradiation.
Markedly inhibited tumor expansion when administered with 808 nm laser irradiation, though less potently than the BNNC + laser group.
Chemical Information
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CAS No. 2825003-94-7
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Molecular Weight 567.08
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Formula C33H31ClN4O3
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SMILES
CC(O/1)(C)C(/C=C/C(CCC/2)=C(Cl)C2=C\C=C3C(C)(C)C(C=C(C(O)=O)C=C4)=C4N\3CC)=C(C#N)C1=C(C#N)\C#N
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
Please store the product under the recommended conditions in the Certificate of Analysis.
Purity & Documentation
References
Calculators
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
- BSS-Et
- 2825003-94-7
- Photosensitizer
- Reactive Oxygen Species (ROS)
- DNA/RNA Synthesis
- Apoptosis
- 4T1 mouse breast cancer cells
- DNA double-strand breaks
- reactive oxygen species
- Cyclin K
- oxidative stress
- breast cancer cells
- singlet oxygen
- mitochondrial membrane potential
- apoptotic cell death
- DNA damage
- Inhibitor
- inhibitor
- inhibit