1,721,134 research outputs found
Aptamer-based technology for radionuclide targeted imaging and therapy. A promising weapon against cancer
No full textIntroduction: aptamers are short artificial, single-strand oligonucleotide sequences (DNA, RNA or modified RNA), capable of binding to biological molecules with high affinity and specificity. Due to their relatively low cost of production and scarce immunogenicity, many efforts have been made to produce aptamers directed against specific molecular targets, such as receptors or transporters overexpressed by malignancies. Areas covered: the technological approaches for generating aptamers are reviewed. Furthermore, the applications of radiolabeled aptamers for the in vivo imaging of several oncological biomarkers through single photon emission computed tomography (SPECT) or positron emission tomography (PET), are covered. Lastly, targeted therapy based on the utilization of aptamers labeled with radionuclides emitting beta particles is discussed, with particular emphasis to the oncological perspectives. Expert opinion: The main limitation of radiolabeled aptamers is represented by their in vivo sensitivity to endogenous nuclease, so that several strategies have been developed to increase the stability of these compounds. Although the applications of aptamers are still in a preliminary and pre-clinical phase, it is reasonable to hypothesize that this technology will play a major role for personalized medicine in the next years
Oncogenic disruption of promyelocytic leukemia nuclear bodies in APL cells results in defects in DNA double strand breaks sensing and repair
No full textConstitutive degradation of the PML/RARalpha protein is present in retinoic acid (RA)-resistant acute promyelocytic leukemia cells and involves the proteasome proteolytic pathway
No full textInclusion complexes of ferrocenes and beta-cyclodextrins. Critical appraisal of the electrochemical evaluation of formation constants
No full textAcute promyelocytic leukemia: a curable disease
No full textThe Second International Symposium on Acute Promyelocytic Leukemia (APL) was held in Rome in 12-14 November 1997. Clinical and basic investigators had the opportunity to discuss in this meeting the important advances in the biology and treatment of this disease achieved in the last 4 years, since the First Roman Symposium was held in 1993. The first part of the meeting was dedicated to relevant aspects of laboratory research, and included the following topics: molecular mechanisms of leukemogenesis and of response/resistance to retinoids, biologic and therapeutic effects of new agents such as arsenicals and novel synthetic retinoids; characterization of APL heterogeneity at the morphological, cytogenetic and immunophenotypic level. The updated results of large cooperative clinical trials using variable combinations of all-trans retinoic acid (ATRA) and chemotherapy were presented by the respective group chairmen, and formed the 'core' part of the meeting. These studies, which in most cases integrated the molecular assessment of response to treatment, provided a stimulating framework for an intense debate on the most appropriate frontline treatment options to be adopted in the future. The last day was dedicated to special entities such as APL in the elderly and in the child, as well as the role of bone marrow transplantation. The prognostic value of molecular monitoring studies was also discussed in the final session of the meeting. In this article, we review the major advances and controversial issues in APL biology and treatment discussed in this symposium and emerging from very recent publications. We would like to credit the successful outcome of this meeting to the active and generous input of all invited speakers and to participants from all over the world who provided constructive and fruitful discussions
Inorganic Electrochemistry. Theory, Practice and Application, 2nd Edition
No full textIn order to understand the basic aspects of an electrochemical investigation on inorganic molecules (in its widest meaning, of any molecule which contains at least one metal centre) it must be taken into account that in these molecules the metal-ligand bonds are of the prevailingly covalent type. Since electrochemical techniques allow you to add or remove electrons in a controlled manner, it is conceivable that the addition or removal of electrons inside these molecules can lead to the formation of new bonds or to the breakage of existing bonds. The main aim of this book is to study the effects of such electron addition and removal processes on the molecular frames.
The second edition of this classic book has been fully revised and updated and is a straightforward, logical introduction to electrochemical investigations for inorganic chemists. All chapters have been rewritten with new material including:
- the addition of reactivity with nitric oxide to the chapter on the reactivity of metal complexes with small molecules
- thiolate-protected gold nanoclusters has been added to the chapter on metal-sulfur and metal-carbonyl clusters
- a new chapter on the digital simulation of electrochemical responses
- a new chapter on the theoretical calculations to explain the nature of the electrochemical activity of metal complexes
- new chapters on spectroelectrochemistry and electrochemiluminescence.
The book covers every aspect of inorganic electrochemistry - the introduction is followed by chapters on the basic aspects of electrochemistry followed by practical and applicative aspects and ends with full appendices. It is probably the only publication with a simple approach to electrochemical aspects of the topics in inorganic chemistry.
Bridging the gap between undergraduate and research-level electrochemistry books, this publication will be a welcome addition to the literature of inorganic chemists. It will also be particularly useful to final year students in chemistry and as background reading for graduates and researchers without adequate electrochemical knowledge to become active in the discipline or who want to collaborate with electrochemists
- …
