Quantitative Autofluorescence Imaging of A375 Human Melanoma Cell Samples: A Pilot Study

Systemic Photodynamic Therapy With Chlorine e6 as a Photosensitizer for the Treatment of Nodular BCC: A Case Report

Introduction: Photodynamic therapy (PDT) is a demonstrated therapeutic method for basal cellcarcinoma (BCC), which is the most common human cancer. Here, we present a case report about systemic PDT with chlorine e6 as a photosensitizer (PS) for BCC treatment. Case Report: A 78-year-old man was diagnosed with a history of a 4-year nodular BCC in the nasal area. The patient was under control and treatment for hypertension and type 2 diabetes. Chlorine e6 was injected intravenously at a 0.08 mg/kg dosage in 500 cc normal saline within 20 minutes. Three hours after injection, laser irradiation was performed with a wavelength of 665 nm, a dosage of 150 J/cm², and an irradiance value of 150 mW/cm². His nodular BCC was completely cured without any side effects after one session of PDT with chlorine e6. Conclusion: Systemic PDT with chlorine e6 as a PS may be safe and effective in removing BCC lesions due to the data obtained in a two-month follow-up.

Preclinical Study of Immunological Isoxazole Derivatives as a Potential Support for Melanoma Chemotherapy

(1) Background: Melanoma is an aggressive neoplasm derived from melanocyte precursors with a high metastatic potential. Responses to chemotherapy and immunotherapy for melanoma remain weak, underlining the urgent need to develop new therapeutic strategies for the treatment of melanoma. (2) Methods: The viability of NHDF and A375 cell cultures after the administration of the tested isoxazole derivatives was assessed after 24-h and 48-h incubation periods with the test compounds in the MTT test. ROS and NO scavenging analyses, a glycoprotein-P activity analysis, a migration assay, a test of apoptosis, and a multiple-criteria decision analysis were also performed. (3) Results: All compounds that were tested resulted in a slower migration of melanoma neoplastic cells. The mechanism of the antitumor activity of the tested compounds was confirmed-i.e., the pro-apoptotic activity of the compounds in A375 cell cultures. Compound O7K qualified for further research. (4) Conclusions: All the tested compounds inhibited the formation of melanoma metastases and demonstrated the ability to reduce the risk of developing drug resistance in the tumor. The MCDA results showed that O7K showed the strongest antitumor activity.