A lysosome-localized thionaphthalimide as a potential heavy-atom-free photosensitizer for selective photodynamic therapy
- 주제(키워드) Heavy-atom-free photosensitizer , Intersystem crossing , Photodynamic therapy , Reactive oxygen species , Sulfur-substituted naphthalimide
- 등재 SCIE, SCOPUS
- 발행기관 Elsevier Ltd
- 발행년도 2020
- 총서유형 Journal
- URI http://www.dcollection.net/handler/ewha/000000169501
- 본문언어 영어
- Published As https://dx.doi.org/10.1016/j.dyepig.2020.108265
초록/요약
A novel sulfur-substituted naphthalimide (LSNI-S) was synthesized and investigated as a promising lysosome-targeting photosensitizer for photodynamic cancer therapy. The introduction of a dual-functional morpholine group to the 4-position of the naphthalimide backbone combined with the substitution of oxygen atoms by sulfur atoms could facilitate intersystem crossing from the excited singlet state to the reactive triplet state, leading to an excellent singlet oxygen generation efficiency of LSNI-S in organic solvents (ΦΔ ≈ 0.84 in air-saturated acetonitrile). Interestingly, LSNI-S could produce reactive oxygen species via both type-I and type-II mechanisms under physiological conditions. In particular, cell studies demonstrated that LSNI-S selectively localizes in lysosomes of cancer cells and exhibits excellent photodynamic therapy efficacy. © 2020 Elsevier Ltd
more