hydroxamic acid/carie dentară

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Tabun scavengers based on hydroxamic acid containing cyclodextrins.

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Arrangement of several hydroxamic acid-derived substituents along the cavity of a cyclodextrin ring leads to compounds that detoxify tabun in TRIS-HCl buffer at physiological pH and 37.0 °C with half-times as low as 3 min.

Dimeric and trimeric homo- and heteroleptic hydroxamic acid macrocycles formed using mixed-ligand Fe(III)-based metal-templated synthesis.

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Macrocyclic hydroxamic acids coordinate Fe(III) with high affinity as part of siderophore-mediated bacterial iron acquisition. Trimeric hydroxamic acid macrocycles, such as desferrioxamine E (DFOE), are prevalent in nature, with fewer dimeric macrocycles identified, including putrebactin (pbH2),

Exploring hydroxamic acid inhibitors of HDAC1 and HDAC2 using small molecule tools and molecular or homology modelling.

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Hydroxamic acid compounds 1-10 containing a N-hydroxycinnamamide scaffold and a 4-(benzylamino)methyl cap group that was either unsubstituted (1) or substituted with one (2-4) or two (5-10) methoxy groups in variable positions were prepared as inhibitors of Zn(II)-containing histone deacetylases

Structural Requirements of Histone Deacetylase Inhibitors: SAHA Analogs Modified on the Hydroxamic Acid.

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Histone deacetylase (HDAC) proteins have emerged as targets for anti-cancer therapeutics, with several inhibitors used in the clinic, including suberoylanilide hydroxamic acid (SAHA, vorinostat). Because SAHA and many other inhibitors target all or most of the 11 human HDAC proteins, the creation of

Zn(II)-dependent histone deacetylase inhibitors: suberoylanilide hydroxamic acid and trichostatin A.

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Suberoylanilide hydroxamic acid (SAHA, vorinostat, Zolinza) and trichostatin A (TSA) are inhibitors of the Zn(II)-dependent class I and class II histone deacetylases (HDACs), which are enzymes that operate in concert with histone acetyltransferases (HATs) to regulate the acetylation status of the

Hydroxamic acid derivatives as HDAC1, HDAC6 and HDAC8 inhibitors with antiproliferative activity in cancer cell lines

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Histone deacetylases (HDACs) belong to a family of enzymes that remove acetyl groups from the ɛ-amino of histone and nonhistone proteins. Additionally, HDACs participate in the genesis and development of cancer diseases as promising therapeutic targets to treat cancer. Therefore, in this work, we

MCF10A and MDA-MB-231 human breast basal epithelial cell co-culture in silicon micro-arrays.

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We developed istotropically etched silicon chip micro-arrays for co-culture of metastatic human breast cancer (MDA-MB-231) and non-tumorigenic human breast (MCF10A) cells. The micro-arrays were fabricated using a single-mask, single-etch step process. Each chip contained a 16×16 array of cavities

Effects of the central lanthanide ion crystal radius on the 15-MC(Cu(II)(N)pheHA)-5 structure.

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Twenty crystal structures of the Ln(III)[15-MC(CuII(N)pheHA)-5](3+) complex, where pheHA = phenylalanine hydroxamic acid and where Ln(III) = Y(III) and La(III)-Tm(III), except Pm(III), with the nitrate and/or hydroxide anion are used to assess the effect of the central metal ion on the metallacrown

Release of iron from ferritin by aceto- and benzohydroxamic acids.

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The release of iron from ferritin by aceto- and benzohydroxamic acids was studied at two different iron chelator concentrations (100 and 10 mM), at two pH values (7.4 and 5.2), and in the presence or absence of urea. Collectively, the results demonstrate that both aceto- and benzohydroxamic acids

Crystal structures of leukotriene A4 hydrolase in complex with captopril and two competitive tight-binding inhibitors.

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Leukotriene (LT) A4 hydrolase/aminopeptidase is a bifunctional zinc enzyme that catalyzes the final step in the biosynthesis of LTB4, a potent chemoattractant and immune modulating lipid mediator. Here, we report a high-resolution crystal structure of LTA4 hydrolase in complex with captopril, a

Spin trapping of methyl radicals by the acyl nitroso compound Ph--C(= O)NO formed in the photochemical reaction between benzohydroxamic acid, dimethyl sulfoxide and hydrogen peroxide. An EPR study.

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By the use of EPR spectroscopy, it has been shown that acyl nitroso compounds can act as spin traps for short-lived radicals with the formation of acyl aminoxyl radicals. The reaction was studied for the system benzohydroxamic acid [Ph--C(= O)N(H)]-dimethyl sulfoxide-hydrogen peroxide. The acyl

Collapsed Cu(II)-hydroxamate metallacrowns.

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Degradation of a strained, thermodynamically destabilized pentanuclear copper(II) 12-metallacrown-4 complex based on a picoline hydroxamic acid resulted in the formation of the tetranuclear compounds which are the first examples of solely hydroxamate-based Cu(II) metallacrown complexes with a

Apo2l/Tumor necrosis factor-related apoptosis-inducing ligand prevents breast cancer-induced bone destruction in a mouse model.

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Breast cancer is the most common carcinoma that metastasizes to bone. To examine the efficacy of recombinant soluble Apo2 ligand (Apo2L)/tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) against breast cancer growth in bone, we established a mouse model in which MDA-MB-231 human breast

2.3 A resolution X-ray crystal structure of the bisubstrate analogue inhibitor salicylhydroxamic acid bound to human myeloperoxidase: a model for a prereaction complex with hydrogen peroxide.

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The X-ray crystal structure of a salicylhydroxamic acid (SHA) inhibitory complex with human myeloperoxidase (MPO) has been determined at 2.3 A resolution. The aromatic ring of the inhibitor binds to a hydrophobic region at the entrance to the distal heme pocket between heme pyrrole ring D and the

An in vivo model for screening peptidomimetic inhibitors of gelatinase A.

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Gelatinase A, a matrix metalloproteinase, is frequently associated with human solid tumors, and its secretion and activation in the tumor milieu is considered important in the process of angiogenesis, invasion, and metastasis. Consequently, metalloproteinase inhibitors may be of value in the therapy

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