•Triterpenoids work as reversal agents for anticancer drug resistance treatment.•The chemical and anticancer properties of triterpenoids are introduced here.•The findings and mechanisms of ...triterpenoids reversing multidrug resistance (MDR) are summarized.•Triterpenoids might be the potential chemosensitizers for anticancer treatment.
Overexpression of ATP-binding cassette (ABC) transporters in cancer cells results in multidrug resistance (MDR), which is one of the major obstacles in the treatment of cancer patients. None of the strategies to overcome MDR has been successfully applied in the clinic until now. Plenty of evidence shows that some triterpenoids function as reversal agents of MDR for anticancer drug resistance treatment. Here, we review the latest findings of reversing cancer MDR with triterpenoids. Findings are summarized showing that triterpenoids are MDR modulators and potential chemosensitizers. Finally, we contemplate future prospects of modulating MDR in the clinic.
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GEOZS, IJS, IMTLJ, KILJ, KISLJ, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UL, UM, UPCLJ, UPUK
Spleen tyrosine kinase (Syk) is an intriguing protein tyrosine kinase involved in signal transduction in a variety of cell types, and its aberrant regulation is associated with different allergic ...disorders and antibody-mediated autoimmune diseases such as rheumatoid arthritis, asthma and allergic rhinitis. Syk also plays an important part in the uncontrolled growth of tumor cells, particularly B cells. For these reasons, Syk is considered one of the most interesting biological targets of the last decade, as proved by the great number of papers and patents published, and the possibility of treating these pathologies by means of Syk kinase inhibitors has led to a great interest from the pharmaceutical and biotech industry.
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GEOZS, IJS, IMTLJ, KILJ, KISLJ, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UL, UM, UPCLJ, UPUK
•ZnO nanoparticles are an emerging novel nanomaterial.•It exhibits effects by inducing ROS generation and causing apoptosis.•It shows synergistic and enhanced therapeutic efficacy when combined with ...other therapeutic agents.•ZnO nanoparticles have also been explored as drug carriers for anti-cancer drugs.•Toxicity concern needs to be explored before clinical applications.
Zinc oxide (ZnO) nanoparticles (NPs) are a promising platform for use in biomedical research, especially given their anticancer and antimicrobial activities. These activities are associated with the ability of ZnO NPs to generate reactive oxygen species (ROS) and induce apoptosis. In addition, ZnO NPs have been successfully exploited as drug carriers for loading and transporting drugs to target sites, thereby reducing unwanted toxicity and off-target effects, and resulting in amplified synergistic effects. Here, we discuss the synthesis and biomedical applications of ZnO NPs.
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GEOZS, IJS, IMTLJ, KILJ, KISLJ, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UL, UM, UPCLJ, UPUK
Poly(amidoamine) (PAMAM) dendrimers are the first complete dendrimer family to be synthesized, characterized and commercialized. Based on this extensive activity, they are recognized as a unique new ...class of synthetic nanostructures. Dendrimers allow the precise control of size, shape and placement of functional groups that is desirable for many life science applications. From this perspective, this review focuses on crucial properties of biomimetic dendrimers that will broaden the potential for their use as macromolecular vectors in novel drug delivery and biomedical applications.
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GEOZS, IJS, IMTLJ, KILJ, KISLJ, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UL, UM, UPCLJ, UPUK
Present drug screening libraries are constrained by biophysical properties that predict desirable pharmacokinetics and structural descriptors of ‘drug-likeness’ or ‘lead-likeness’. Recent surveys, ...however, indicate that to enter cells most drugs require solute carriers that normally transport the naturally occurring intermediary metabolites and many drugs are likely to interact similarly. The existence of increasingly comprehensive summaries of the human metabolome allows the assessment of the concept of ‘metabolite-likeness’. We compare the similarity of known drugs and library compounds to naturally occurring metabolites (endogenites) using relevant cheminformatics molecular descriptor spaces in which known drugs are more akin to such endogenites than are most library compounds.
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GEOZS, IJS, IMTLJ, KILJ, KISLJ, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UL, UM, UPCLJ, UPUK
Biochemical assays have largely supplanted functional biological assays as drug screening tools in the early stages of drug discovery. The de-selection of compounds that are ‘nonleadlike’ binders ...(and bonders) and the proactive selection of those compounds that are ‘leadlike’ in their binding to the target are vital components of the screening effort. The physiochemical properties of leadlikeness and the surprising differences between those properties and the now classical definitions of druglikeness are becoming apparent.
The physiochemical properties of leadlikeness and the surprising differences between those properties and the now classical definitions of druglikeness are becoming apparent.
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GEOZS, IJS, IMTLJ, KILJ, KISLJ, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UL, UM, UPCLJ, UPUK
The use of RNAi is spreading rapidly to nearly every aspect of biological research; however, the efficacy depends on the efficient delivery of the intermediates of RNAi.
The use of RNA interference ...(RNAi) is spreading rapidly to nearly every aspect of biomedical research. The gene silencing capability of RNAi is being used to study individual gene's biological function and role in biochemical pathways. However, the efficacy of RNAi depends upon efficient delivery of the intermediates of RNAi, short interfering RNA (siRNA) and short hairpin RNA (shRNA) oligonucleotides. The delivery challenge is even greater when the aim is to inhibit the expression of target genes in animal models. Although i n vivo delivery of siRNA is complicated and challenging, recent results are encouraging. In this review, the latest developments of in vivo delivery of siRNA and the crucial issues related to this effort are addressed.
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GEOZS, IJS, IMTLJ, KILJ, KISLJ, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UL, UM, UPCLJ, UPUK
DNA methylation is one of the most extensively studied, and one of the most stable, of all epigenetic modifications. Two drugs that target DNA methyltransferase enzymes are licensed for clinical use ...in oncology but relatively little attention has focused on the enzymatic pathways by which DNA methylation can be reversed. Recent breakthroughs have identified at least two classes of enzymes that can achieve functional reversal. This review discusses the significance of DNA demethylation in a range of human diseases, the candidate proteins that mediate the demethylation and the opportunities and challenges in targeting these candidates to develop new therapeutics.
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GEOZS, IJS, IMTLJ, KILJ, KISLJ, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UL, UM, UPCLJ, UPUK
The bacterial RNA polymerase (RNAP) is an essential enzyme that is responsible for making RNA from a DNA template and is targeted by several antibiotics. Rifampicin was the first of such antibiotics ...to be described and is one of the most efficient anti-tuberculosis drugs in use. In the past five years, structural studies of bacterial RNAP and the resolution of several complexes of drugs bound to RNAP subunits have revealed molecular details of the drug-binding sites and the mechanism of drug action. This knowledge opens avenues for the development of antibiotics. Here these drugs are reviewed, together with their mechanisms and their potential interest for therapeutic applications.
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GEOZS, IJS, IMTLJ, KILJ, KISLJ, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UL, UM, UPCLJ, UPUK
Once a molecule is identified as a potential drug, the detection of adverse drug reactions is one of the key components of its development and the FDA approval process. We propose using
Drosophila ...melanogaster to screen for reproductive adverse drug reactions in the early stages of drug development. Compared with other non-mammalian models,
D. melanogaster has many similarities to the mammalian reproductive system, including putative sex hormones and conserved proteins involved in genitourinary development. Furthermore, the
D. melanogaster model would present significant advantages in time efficiency and cost-effectiveness compared with mammalian models. We present data on methotrexate (MTX) reproductive adverse events in multiple animal models, including fruit flies, as proof-of-concept for the use of the
D. melanogaster model.
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GEOZS, IJS, IMTLJ, KILJ, KISLJ, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UL, UM, UPCLJ, UPUK
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