67605-64-5Relevant academic research and scientific papers
Synthesis of a series of zinc porphyrins and spectroscopic changes upon coordination reaction with imidazole derivatives
Wang, Shu-Jun,Peng, Yu-Ling,Zhang, Cheng-Gen,Li, Yong-Bing,Liu, Chao
, p. 2693 - 2702 (2015)
Three metal-free porphyrins modified with Boc-L-threonine and their zinc analogs were synthesized and characterized by elemental analysis, 1H NMR, UV/vis, and fluorescence spectroscopies. The binding of imidazole derivatives to these zinc porph
Biotin-conjugated PEGylated porphyrin self-assembled nanoparticles co-targeting mitochondria and lysosomes for advanced chemo-photodynamic combination therapy
Purushothaman, Baskaran,Choi, Jinhyeok,Park, Solji,Lee, Jeongmin,Samson, Annie Agnes Suganya,Hong, Sera,Song, Joon Myong
, p. 65 - 79 (2019)
The combination of chemotherapy and photodynamic therapy (chemo-PDT) has been suggested as an alternative therapy for drug-resistant cancers. In this study, biotin-conjugated PEGylated photosensitizer (PS) self-assembled nanoparticles (meso-tetraphenylpor
Photochemotherapeutic strategy against Acanthamoeba infections
Aqeel, Yousuf,Siddiqui, Ruqaiyyah,Anwar, Ayaz,Shah, Muhammad Raza,Khoja, Shahrukh,Khan, Naveed Ahmed
, p. 3031 - 3041 (2015)
Acanthamoeba is a protist pathogen that can cause serious human infections, including blinding keratitis and a granulomatous amoebic encephalitis that almost always results in death. The current treatment for these infections includes a mixture of drugs,
Nanoparticles based on glycyrrhetinic acid modified porphyrin for photodynamic therapy of cancer
Wang, Xin,Wang, Peisong,Xue, Shuai,Zheng, Xiaohua,Xie, Zhigang,Chen, Guang,Sun, Tingting
, p. 1591 - 1597 (2018)
Self-assembled small molecules, as a novel form of drug presentation, have splendid capabilities for water stability and cell endocytosis. Photodynamic therapy (PDT) is regarded as a promising cancer treatment because it is less invasive and has fewer sid
Spectroscopic investigations and theoretical calculations of DABCO induced xanthene bridged self-Assembled zinc(II) porphyrin dimer
Xu, Li,Huang, Tingting,Liang, Xu,Mack, John,Harris, Jessica,Nyokong, Tebello,Li, Minzhi,Zhu, Weihua
, p. 647 - 655 (2016)
An in-depth study of the electronic structure of a 1,4-diazabicyclo[2.2.2]octane (DABCO) induced molecular self-Assembled xanthene-bridged and amide-bonded porphyrin dimer is reported. Density functional theory (DFT) and time-dependent DFT (TD-DFT) calculations are used to identify trends in the optical spectroscopic properties. B3LYP geometry optimization predicts the formation of an almost perfectly eclipsed structure with respect to the two porphyrin rings with the analogous pyrrole nitrogens separated by 7.7-8.1 ?. The observed distinctive derivative-shaped band morphology of the pseudo-Faraday-A1 terms in the MCD spectra has been used to identify the main electronic Q and B-bands and to validate the TD-DFT calculations. The absence of a discernible splitting of the redox steps or a quenching of the fluorescence demonstrates that there is no significant exciton coupling between the two porphyrin rings.
Synthesis and photocytotoxicity of nitroxyl radical-substituted porphyrin
Wu, Jian,Shi, Weimin,Wu, Di
, p. 460 - 461 (2004)
A novel tetraphenylporphyrin derivative bearing nitroxyl radical moiety was efficiently synthesized by improved preparation of monoamino-substituted tetraphenylporphyrin as the precursor. Preliminary photocytotoxicity investigation of the spin labeled por
Cationic porphyrin-quinoxaline conjugate as a photochemically triggered novel cytotoxic agent
Kumar, Dalip,Chandra Shekar,Mishra, Bhupendra,Kurihara, Ryohsuke,Ogura, Maiko,Ito, Takeo
, p. 3221 - 3224 (2013)
A novel cationic porphyrin-quinoxaline conjugate 8 was prepared in good yield by the coupling of activated quinoxaline carboxylic acid 5 with an appropriate aminoporphyrin. The UV-vis spectra of conjugate 8 with the addition of ctDNA shows substantial hyp
Tunable memory performances of the porphyrin terminated hyperbranched polyimides
Tan, Haiwei,Yu, Huaxuan,Yao, Hongyan,Song, Ying,Zhu, Shiyang,Tian, Ye,Liu, Huiling,Guan, Shaowei
, p. 1953 - 1961 (2018)
Herein, a functional hyperbranched polyimide, denoted as ATPP-HBPI, was synthesized by termination of polyamic acid with 5-(4-aminophenyl)-10, 15, 20-triphenylporphyrin (ATPP) and chemical imidization. Subsequently, ATPP-HBPI was coordinated with Zn ion t
Porphyrin and galactosyl conjugated micelles for targeting photodynamic therapy
Wu, De-Qun,Li, Ze-Yong,Li, Cao,Fan, Jian-Jun,Lu, Bo,Chang, Cong,Cheng, Si-Xue,Zhang, Xian-Zheng,Zhuo, Ren-Xi
, p. 187 - 199 (2010)
Purpose: To study the targeting and photodynamic therapy efficiency of porphyrin and galactosyl conjugated micelles based on amphiphilic copolymer galactosyl and mono-aminoporphyrin (APP) incoporated poly(2-aminoethyl methacrylate)-polycaprolactone (Gal-APP-PAEMA-PCL). Methods: Poly(2-aminoethyl methacrylate)-polycaprolactone (PAEMA-PCL) was synthesized by the combination of ring opening polymerization and reversible addition-fragmentation chain transfer (RAFT) polymerization, and then Gal-APP-PAEMA-PCL was obtained after conjugation of lactobionic acid and 5-(4-aminophenyl)-10,15,20- triphenylporphyrin (APP) to PAEMA-PCL. The chemical structures of the copolymers were characterized, and their biological properties were evaluated in human laryngeal carcinoma (HEp2) and human hepatocellular liver carcinoma (HepG2) cells. Results: Both APP-PAEMA-PCL and Gal-APP-PAEMA-PCL did not exhibit dark cytotoxicity to HEp2 cells and HepG2 cells. However, Gal-APP-PAEMA-PCL was taken up selectively by HepG2 cells and had the higher phototoxicity effect. Both polymers preferentially localized within cellular vesicles that correlated to the lysosomes. Conclusions: The results indicated that porphyrin and galactosyl conjugated polymer micelles exhibited higher targeting and photodynamic therapy efficacy in HepG2 cells than in HEp2 cells.
Photosensitizer-peptoid conjugates for photoinactivation of Gram-negative bacteria: structure-activity relationship and mechanistic studies
Choi, Jieun,Lee, Hohjai,Lee, Seongsoo,Lee, Yunho,Lee, Yunjee,Oh, Hyeongyeol,Seo, Jiwon,Shin, Sujin,Yang, Woojin,Yoon, Younggun
, p. 6546 - 6557 (2021)
Multitarget engagement is considered an effective strategy to overcome the threat of bacterial infection, and antimicrobials with multiple mechanisms of action have been successful as natural chemical weaponry. Here, we synthesized a library of photosensitizer-peptoid conjugates (PsPCs) as novel antimicrobial photodynamic therapy (aPDT) agents. The peptoids, linkers, and photosensitizers were varied, and their structure-antimicrobial activity relationships againstEscherichia coliwere evaluated; PsPC9was indicated to be the most promising photoresponsive antimicrobial agent among the synthesized PsPCs. Spectroscopic analyses indicated that9generated singlet oxygen upon absorption of visible light (420 nm) while maintaining the weakly helical conformation of the peptoid. Mechanistic studies suggested that damage to the bacterial membrane and cleavage of DNA upon light irradiation were the main causes of bactericidal activity, which was supported by flow cytometry and DNA gel electrophoresis experiments. We demonstrated that the optimal combination of membrane-active peptoids and photosensitizers can generate an efficient aPDT agent that targets multiple sites of bacterial components and kills bacteria by membrane disruption and reactive oxygen species generation.
