The role of photoinduced electron transfer processes in photodegradation of the [Fe4(μ3-S)3(NO)7]− cluster

Chmura, Antonina; Szaciłowski, Konrad; Stasicka, Zofia

doi:10.1016/j.niox.2006.03.005

Cited by 8 publications

(3 citation statements)

References 39 publications

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“…The red shift of the NIR absorption from the Cu center (810 to 910 nm) should be due to the replace of the midfield H 2 O ligand by the weak-field RBS – ligand . Because the UV-responsiveness of RBS is well-known to derive from its absorption property in the UV zone, , it is deduced that Cu-RBS will be sensitive to NIR light for NO release, which is also indeed confirmed as following in this work.…”

supporting

confidence: 84%

Facile Coordination-Precipitation Route to Insoluble Metal Roussin’s Black Salts for NIR-Responsive Release of NO for Anti-Metastasis

Chen

Lei

et al. 2017

ACS Appl. Mater. Interfaces

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A facile and general coordination-precipitation method is developed to synthesize insoluble metal Roussin's black salts (Me-RBSs) as a new type of NIR-responsive NORMs. The weak-field ligand coordination of metal-RBS brings a NIR absorption effect of Me-RBSs, and further gives rise to the NIR adsorption-dependent NIR-responsive NO release profile. Intratumoral NIR-responsive release of NO effectively inhibits the growth and metastasis of the metastatic breast cancer. Aqueous insolubility of Me-RBSs ensures lower cytotoxicity and higher thermostability compared with traditional soluble RBSs. This work establishes a new class of NIR-sensitive NO donors, and may spark new inspiration for designing intelligent gas-releasing molecules.

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supporting

confidence: 84%

Facile Coordination-Precipitation Route to Insoluble Metal Roussin’s Black Salts for NIR-Responsive Release of NO for Anti-Metastasis

Chen

Lei

et al. 2017

ACS Appl. Mater. Interfaces

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“…RBS inhibits the enzyme alcohol dehydrogenase at very low concentration (∼1 × 10 –7 M). , The [Fe 4 S 3 (NO) 7 ] − anion can access four oxidation states, from −1 to −4, with the −1 and −2 states being stable for isolation and characterization . Under aerobic conditions, RBS will slowly decompose and release NO, but under anaerobic conditions no NO release is observed. ,, Ford and coworkers explored the quantitative photoreactivity of Roussinate salts. They found that photolysis of RRS produces quantitative yields of RBS, which in turn in the presence of dioxygen slowly photodecomposes to Fe III , NO, sulfur, and unknown Fe II species with a quantum yield of 0.0011.…”

Section: Dinitrosyl Iron Complexes (Dnics)mentioning

confidence: 99%

The Biologically Relevant Coordination Chemistry of Iron and Nitric Oxide: Electronic Structure and Reactivity

et al. 2021

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Nitric oxide (NO) is an important signaling molecule that is involved in a wide range of physiological and pathological events in biology. Metal coordination chemistry, especially with iron, is at the heart of many biological transformations involving NO. A series of heme proteins, nitric oxide synthases (NOS), soluble guanylate cyclase (sGC), and nitrophorins, are responsible for the biosynthesis, sensing, and transport of NO. Alternatively, NO can be generated from nitrite by heme- and copper-containing nitrite reductases (NIRs). The NO-bearing small molecules such as nitrosothiols and dinitrosyl iron complexes (DNICs) can serve as an alternative vehicle for NO storage and transport. Once NO is formed, the rich reaction chemistry of NO leads to a wide variety of biological activities including reduction of NO by heme or non-heme iron-containing NO reductases and protein post-translational modifications by DNICs. Much of our understanding of the reactivity of metal sites in biology with NO and the mechanisms of these transformations has come from the elucidation of the geometric and electronic structures and chemical reactivity of synthetic model systems, in synergy with biochemical and biophysical studies on the relevant proteins themselves. This review focuses on recent advancements from studies on proteins and model complexes that not only have improved our understanding of the biological roles of NO but also have provided foundations for biomedical research and for bio-inspired catalyst design in energy science.

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“…Задавшись вопросом о причинах недостаточной эффективности работы по предупреждению фолатного дефицита, исследователи установили, что значительная часть американок не принимают фолиевую кислоту регулярно, даже планируя беременность [15][16][17]. Среди причин этого досадного пренебрежения фолатами фигурируют самые разнообразные мотивы, но ключевой проблемой оказалась необходимость ежедневного приема дополнительных доз витамина в таблетированной форме при недостаточной осведомленности и мотивированности женщин [3,21].…”

Section: история борьбы с фолатным дефицитом в разных странахunclassified

Metafolin in combined oral contraceptives – investments in reproductive welfare. World news: modern contraception – new opportunity of pregravidarum preparing

Галина

2013

Reproductive Endocrinology

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The role of photoinduced electron transfer processes in photodegradation of the [Fe4(μ3-S)3(NO)7]− cluster

Cited by 8 publications

References 39 publications

Facile Coordination-Precipitation Route to Insoluble Metal Roussin’s Black Salts for NIR-Responsive Release of NO for Anti-Metastasis

Facile Coordination-Precipitation Route to Insoluble Metal Roussin’s Black Salts for NIR-Responsive Release of NO for Anti-Metastasis

The Biologically Relevant Coordination Chemistry of Iron and Nitric Oxide: Electronic Structure and Reactivity

Metafolin in combined oral contraceptives – investments in reproductive welfare. World news: modern contraception – new opportunity of pregravidarum preparing

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