{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,28]],"date-time":"2026-09-28T16:32:04Z","timestamp":1790613124994,"version":"4.1.0"},"reference-count":35,"publisher":"MDPI AG","issue":"18","license":[{"start":{"date-parts":[[2024,9,17]],"date-time":"2024-09-17T00:00:00Z","timestamp":1726531200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Research Foundation of Korea (NRF)","award":["2021R1F1A1051466"],"award-info":[{"award-number":["2021R1F1A1051466"]}]},{"name":"National Research Foundation of Korea (NRF)","award":["RS-2024-00345102"],"award-info":[{"award-number":["RS-2024-00345102"]}]},{"name":"Korea government (MSIT)","award":["2021R1F1A1051466"],"award-info":[{"award-number":["2021R1F1A1051466"]}]},{"name":"Korea government (MSIT)","award":["RS-2024-00345102"],"award-info":[{"award-number":["RS-2024-00345102"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJMS"],"abstract":"<jats:p>Many cell culture experiments are performed under light to evaluate the photodynamic or photosensitizing efficacy of various agents. In this study, the modulation of photosensitizing responses and phototoxicity under cell culture conditions by different medium components was investigated. The significant levels of reactive oxygen species (ROS) generated from DMEM, RPMI 1640, and MEM were observed under the irradiation of fluorescent light (FL) and white and blue LEDs, indicating that these media have their own photosensitizing properties; DMEM showed the most potent property. Phenol red-free DMEM (Pf-D) exhibited a stronger photosensitizing property than normal DMEM by 1.31 and 1.25 times under FL and blue LEDs, respectively; phenol red and riboflavin-free DMEM (PRbf-D) did not show any photosensitizing properties. The inhibitory effect on light transmission was more pronounced in DMEM than in RPMI, and the interference effect on green LED light was greatest at 57.8 and 27.4%, respectively; the effect disappeared in Pf-D. The media containing riboflavin induced strong phototoxicity in HaCaT keratinocytes by generating H2O2 under light irradiation, which was quenched by sodium pyruvate in the media. The presence of serum in the media was also reduced the phototoxicity; H2O2 levels in the media decreased serum content dependently. The phototoxicity of erythrosine B and protoporphyrin IX under FL was more sensitively pronounced in PRbf-D than in DMEM. The present results indicate that several medium components, including riboflavin, phenol red, sodium pyruvate, and serum, could modulate photosensitizing responses in a cell culture system by inducing photosensitizing activation and by interfering with irradiation efficacy and ROS generation.<\/jats:p>","DOI":"10.3390\/ijms251810016","type":"journal-article","created":{"date-parts":[[2024,9,18]],"date-time":"2024-09-18T00:51:43Z","timestamp":1726620703000},"page":"10016","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Modulation of Photosensitizing Responses in Cell Culture Environments by Different Medium Components"],"prefix":"10.3390","volume":"25","author":[{"given":"Hyowon","family":"Lee","sequence":"first","affiliation":[{"name":"Department of Food Science and Technology, College of Science and Convergence Technology, Seoul Women\u2019s University, Hwarang-ro 621, Nowon-gu, Seoul 01797, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3878-6059","authenticated-orcid":false,"given":"Jungil","family":"Hong","sequence":"additional","affiliation":[{"name":"Department of Food Science and Technology, College of Science and Convergence Technology, Seoul Women\u2019s University, Hwarang-ro 621, Nowon-gu, Seoul 01797, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2024,9,17]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"841","DOI":"10.1007\/s00204-011-0718-x","article-title":"Alternatives to animal testing: Current status and future perspectives","volume":"85","author":"Liebsch","year":"2011","journal-title":"Arch. 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