hydroxylamine/karcinóm prsníka

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Novel TP53 gene mutations in tumors of Russian patients with breast cancer detected using a new solid phase chemical cleavage of mismatch method and identified by sequencing.

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Mutations in the tumor-suppressor p53 gene TP53 are frequent in most human cancers including breast cancer. A new solid phase chemical cleavage of mismatch method (CCM) allowed rapid and efficient screening and analysis of the TP53 gene in DNA samples extracted from tumors of 89 breast cancer

Evidence that p53 behaves as a tumour suppressor gene in sporadic breast tumours.

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Using the polymerase chain reaction, we have amplified exons 5 and 6 of the human p53 gene from paired samples of tumour and blood DNA of 60 patients with sporadic breast tumours and from placental or tonsil DNA of 30 normal controls. The patients' DNAs were previously examined for loss of

Polymer-supported N-derivatized, o-linked hydroxylamine for concurrent solid-phase synthesis of diverse N-alkyl and N-H hydroxamates.

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We describe parallel/combinatorial, solid-phase, supported synthesis of diverse hydroxamates using a common intermediate, an N-derivatized, O-linked hydroxylamine. The method allows the concurrent synthesis of both N-alkyl and N-H hydroxamates and is compatible with a wide range of chemical

Synthesis of new chromeno-annulated cis-fused pyrano[4,3-c]isoxazole derivatives via intramolecular nitrone cycloaddition and their cytotoxicity evaluation.

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New cis-fused chromeno pyrano[4,3-c]isoxazole derivatives have been synthesized by intramolecular [1,3]-cycloaddition of the nitrones generated in situ from hydroxylamine derivatives and 7-O-prenyl derivatives of 8-formyl-2,3-disubstituted chromenones using PEG-400 as a reaction medium under

Gene-specific chromatin damage in human spermatozoa can be blocked by antioxidants that target mitochondria.

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Incubation of gradient purified human spermatozoa, which are routinely maintained in media prior to IVF and intracytoplasmic sperm injection (ICSI), induced DNA strand breaks (up to 89 nicks x 10(-3) bp) and chromatin release. Unlike highly dispersed Alu repeat sequences, the centromeric

L-homoserine hydroxamic acid as an antitumor agent.

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This report confirms the potent mutagenic and antitumor activity of L-homoserine hydroxamic acid in both in vitro and in vivo test systems. Its mutagenic potential is evident in the developing tadpoles of Xenopus laevis eggs exposed to the compound. Cytotoxic effects are demonstrated against human

Design, Synthesis, Anticancer Evaluation and Docking Studies of Novel Heterocyclic Derivatives Obtained via Reactions Involving Curcumin.

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Curcumin, a widely utilized flavor and coloring agent in food, has been shown to demonstrate powerful antioxidant, antitumor promoting and anti-inflammatory properties in vitro and in vivo. In the present work, synthesis of new heterocyclic derivatives based on Curcumin was studied. Compound 3 was

In Vitro Evaluation of Doxorubicin Conjugates Based on Sugar Core Nonlinear Polymethacrylates toward Anticancer Drug Delivery.

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V-shaped and star-shaped hydroxylamine-functionalized polymethacrylates designed as nanosized conjugates (<120 nm) with anticancer agent, namely, doxorubicin (DOX), were evaluated in vitro toward their potential usage as drug delivery systems in breast cancer (MCF-7) treatment. Statistical analysis

Doxorubicin-formaldehyde conjugates targeting alphavbeta3 integrin.

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We have reported the synthesis and biological evaluation of a prodrug to a doxorubicin active metabolite. Under physiologic conditions, release of the active metabolite, a conjugate of doxorubicin with formaldehyde, occurs with a half-life of 1 hour. To direct this prodrug to tumor, we designed two

Site-specific coupling and sterically controlled formation of multimeric antibody fab fragments with unnatural amino acids.

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Immunoconjugates and multispecific antibodies are rapidly emerging as highly potent experimental therapeutics against cancer. We have developed a method to incorporate an unnatural amino acid, p-acetylphenylalanine (pAcPhe) into an antibody antigen binding fragment (Fab) targeting HER2 (human

SERS-based differential diagnosis between multiple solid malignancies: breast, colorectal, lung, ovarian and oral cancer.

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Surface-enhanced Raman scattering (SERS) spectroscopy on serum and other biofluids for cancer diagnosis represents an emerging field, which has shown promising preliminary results in several types of malignancies. The purpose of this study was to demonstrate that SERS spectroscopy on

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