146 research outputs found

    Nitroxide radicals for imaging of tissue redox activity in cancer

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    Workshop “Spin-labeled anticancer drugs and assessment of their therapeutic activity using EPR and MRI

    Ultra-fast biosensors and multi-photon microscopy in the future of brain studies

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    The direct, highly selective and sensitive real-time imaging of neuro- and biochemical mediators is the only way to clarify precisely the chemistry of the brain and to discover the key molecular targets involved in regulation of brain homeostasis. To realize that, we need: high-speed deep-tissue imaging techniques with high spatial and temporal resolution; and ultra-fast and highly selective molecular sensors, giving a possibility to monitor target molecules directly in their physiological environment; in addition, these molecular sensors have to be comparatively small and permeable for blood-brain barrier, to be applicable in brain studies. The present view accents on the perspectives for development of direct approach for investigation of function/flow coupling phenomenon in the brain, based on the current progress in development of ultra-fast molecular sensors for direct visualization of biochemical mediators (e.g., nitric oxide, Ca ions), and high-speed two-photon/multi-photon deep-tissue imaging

    RNA interference - about the reality to be exploited in cancer therapy

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    The discovery of RNA interference (RNAi) in mammalian cells raises the expectations of gene therapy, especially in cancer. However, it is too early to say how great this promise may be because of many disputable problems including intracellular delivery of siRNA, the transient nature of RNAi and potential side effects after long-term treatment. The present microarray study demonstrates that the RNAi of one oncogene (encoding bcr-abl fusion protein in chronic myelogenous leukemia) triggers an overexpression of other "sleeping" oncogenes, antiapoptotic genes and factors, preserving the immortalization of bcr-abl-positive leukemia cells

    Fluorescent molecular sensors and multi-photon microscopy in brain studies

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    To clarify the brain phenomena, to prove directly the major biochemical pathways in cerebral tissue, and to discover the crucial steps in brain pathology, it is necessary to develop a high speed deep-tissue imaging techniques with high spatial and temporal resolution, and ultra-fast and highly selective molecular sensors, giving a possibility to monitor target molecules directly in their physiological environment. This technical comment accents on the perspectives for development of direct approach for investigation of function/flow coupling phenomenon and zinc transport into the brain, based on the current progress in development of ultra-fast molecular sensors for direct visualization of biochemical mediators and neurotransmitters, and high speed multi-photon deep-tissue imaging
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