Citations
4 publicationsPublications from researchers using this productDescription
Chlorin e6, a photosensitizer with a simple porphyrin nucleus, has strong absorption peaks at wavelengths of 403nm and 664nm[1]. Chlorin e6 exhibits low dark toxicity, high phototoxicity, and rapid accumulation in target tissues, enabling the generation of singlet oxygen and the formation of intracellular reactive oxygen species (ROS)[2]. Chlorin e6 has been widely used in photodynamic therapy and dynamic acoustic therapy to inhibit tumor growth and regulate bacterial activity[3].
In vitro, Chlorin e6 treatment for 48 hours significantly inhibited the viability of HepG2 and B16-F10 cells, with IC50 values of 1.66µM and 1.67µM, respectively, under 10J/cm2 irradiation (24h)[4]. Chlorin e6 (0.2mg/ml) treatment for 45 minutes combined with 1.0MHz/cm2 ultrasound (60s) induced G2/M phase arrest and apoptosis in SPCA-1 cells[5]. Pretreatment with 170µM Chlorin e6 for 90 minutes, followed by irradiation at 2J/cm2, induced vascular smooth muscle cell death, accompanied by DNA fragmentation, reduced cell membrane polarization, and caspase-3 activation[6].
In vivo, oral administration of Chlorin e6 at a dose of 5mg/kg every 2 days, combined with 4.96mW/cm2 light irradiation for 4 weeks, significantly attenuated high-fat diet-induced obesity, reduced hepatic lipid accumulation, and decreased epididymal adipocyte size in mice[7].
References:
[1] Paul S, Heng P W S, Chan L W. Optimization in solvent selection for chlorin e6 in photodynamic therapy[J]. Journal of fluorescence, 2013, 23(2): 283-291.
[2] Pandit R P, Thapa Magar T B, Shrestha R, et al. Isolation, identification, and biological activities of a new chlorin e6 derivative[J]. International Journal of Molecular Sciences, 2024, 25(13): 7114.
[3] Liao S, Cai M, Zhu R, et al. Antitumor effect of photodynamic therapy/sonodynamic therapy/sono-photodynamic therapy of chlorin e6 and other applications[J]. Molecular pharmaceutics, 2023, 20(2): 875-885.
[4] Huang F, Li Y, Zhang X J, et al. Novel chlorin e6-based conjugates of tyrosine kinase inhibitors: Synthesis and photobiological evaluation as potent photosensitizers for photodynamic therapy[J]. European Journal of Medicinal Chemistry, 2023, 261: 115787.
[5] Chen B, Zheng R, Liu D, et al. The tumor affinity of chlorin e6 and its sonodynamic effects on non-small cell lung cancer[J]. Ultrasonics sonochemistry, 2013, 20(2): 667-673.
[6] Wawrzyńska M, Kałas W, Biały D, et al. In vitro photodynamic therapy with chlorin e6 leads to apoptosis of human vascular smooth muscle cells[J]. Archivum Immunologiae et Therapiae Experimentalis, 2010, 58(1): 67-75.
[7] Shrestha R, Gurung P, Lim J, et al. Anti-obesity effect of Chlorin e6-mediated photodynamic therapy on mice with high-fat-diet-induced obesity[J]. Pharmaceuticals, 2023, 16(7): 1053.
Protocol
| Cell experiment [1]: | |
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Cell lines |
B16-F10 cells |
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Preparation Method |
B16-F10 cells were cultured in RPMI-1640 medium, supplemented with 10% fetal bovine serum (FBS), and 1% penicillin/streptomycin, at 37°C in an incubator with 5% CO2. Cells were seeded into 96-well plates at a density of 5×103 cells/ml and incubated for 24h at 37°C. Cells were exposed to gradient concentrations of Chlorin e6 (0, 0.1, 1, 10, and 100µM) for 48h, cell viability was measured. |
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Reaction Conditions |
0, 0.1, 1, 10, and 100µM; 48h |
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Applications |
Chlorin e6 treatment reduced cell viability in B16-F10 cells in a dose-dependent manner. |
| Animal experiment [2]: | |
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Animal models |
Male C57BL6 mice |
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Preparation Method |
Male C57BL6 mice (4 weeks old) were housed and maintained in a standard environment (room temperature 20±2°C; humidity 50±5%; light/dark cycle: 12:12h) in the standard lab facility for a week. The mice were randomly divided into 3 groups with similar weights: normal group (Nor), vehicle-treated high-fat diet group (HFD), high-fat diet with Chlorin e6 (5mg/kg) and light of a high fluence rate (4.96mW/cm2). The normal group of mice was fed a normal diet (10% fat), while the remaining groups were fed a high-fat diet (60% fat) for 70 days to increase the body weight by about 70%. Chlorin e6 (5mg/kg/day) was dissolved in normal saline, filtered through a 0.2µm syringe filter, and administered orally to the treated mice every two days with 4.96mW/cm2 light for 4 weeks. The weight changes in mice, along with food and water intake, were measured every week. |
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Dosage form |
5mg/kg; every two days; 4 weeks; p.o. |
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Applications |
Chlorin e6 treatment combined with 4.96mW/cm2 light decreased body weight in mice with a high-fat diet. |
References: [1] Huang F, Li Y, Zhang X J, et al. Novel chlorin e6-based conjugates of tyrosine kinase inhibitors: Synthesis and photobiological evaluation as potent photosensitizers for photodynamic therapy[J]. European Journal of Medicinal Chemistry, 2023, 261: 115787. [2] Shrestha R, Gurung P, Lim J, et al. Anti-obesity effect of Chlorin e6-mediated photodynamic therapy on mice with high-fat-diet-induced obesity[J]. Pharmaceuticals, 2023, 16(7): 1053. | |
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