ted reptiles' sera using liquid chromatography mass spectrometry leading to identification of potentially novel anticancer agents. We hope that the discovery of molecules from these animals will pave the way for the rational development of new anticancer agents. Copyright© Bentham Science Publishers; For any queries, please email at epub@benthamscience.net.BACKGROUND AND OBJECTIVE Although the anticancer potentials of water insoluble drugs are improved by nanoformulation, other intervening factors may contribute in the drug efficacy. This work was designated to explore the effect of paclitaxel-loaded poly lactic-co-glycolic acid (PLGA) nanoparticles on the viability of cancer cells, the expression of Taxol resistance gene I (TXR1) and paclitaxel metabolizing genes. METHODS Paclitaxel loaded PLGA nanoparticles (PTX-NPs) were prepared, physically characterized and used in treatment of breast adenocarcinoma cells (MCF-7) and hepatoma cells (HepG2). Cells viability and apoptosis were investigated. In parallel, RNA was isolated, reverse transcribed and used to monitor the expression levels of TXR1, CYP 3A4 and CYP2C8 genes. RESULTS PTX-NPs were characterized by transmission electron microscopy as a nano size sphere-like shape. FTIR analysis revealed good coupling between PTX and PLGA. The encapsulation efficiency was 99% and the drug release demonstrated a progressive releasing phase followed by slower and sustained releasing phase. Although HepG2 cells demonstrated more resistance to PTX than MCF-7 cells, both cell types were more responsive to PTX-NPS compared to PTX. The IC50 values decreased from 19.3 to 6.7 in breast cancer cells and from 42.5 to 13.1 g/ml in hepatoma cells. https://www.selleckchem.com/products/s961.html The apoptosis was the key mechanism in both cells, where at least 44% of cells underwent apoptosis. The expression of TXR1 decreased when either cells were treated to PTX-NPs, respectively, meanwhile the expression of CYP3A4 and CYP2C8 were increased. CONCLUSION Taken together, this in vitro study reports the associations between the enhanced responsiveness of MCF-7 and HepG2 cells to PLGA-loaded paclitaxel nanoparticles and the accompanying decrease in cells resistance to the PTX and its enhanced metabolism. Copyright© Bentham Science Publishers; For any queries, please email at epub@benthamscience.net.BACKGROUND The Non-Small Cell Lung Cancer (NSCLC) alone is responsible for the sovereignty of demises worldwide related to the other cancers.ROS1 is a receptor tyrosine kinase (RTK), eminently recognized as the stereotyped oncogenic driver. These RTKs trigger an array of physiological regulations via cellular signal transduction pathways which are crucial for the cancer development. This attributed ROS1 as an appealing and potential target towards the targeted cancer therapy. The aim of the present research is to propound out an effective contemporary inhibitor for targeting ROS1 with a high affinity. METHODS Molegro Virtual Docker(MVD) provided a flexible docking platform to find out the best established drug as an inhibitor for targeting ROS1. A similarity search was accomplished against the PubChem database to acquire the corresponding inhibitor compounds with reference to the Entrectinib (PubChem ID 25141092). These compounds were docked to procure the high affinity inhibitor for the target protein via virtual screening. A comparative study between the control molecule(PubChem ID 25141092)and the virtual screened compound(PubChem ID25175866) was performed for the relative analysis of their salient features, which involved pharmacophore mapping, ADMET profiling and BOILED-Egg plot. RESULTS The virtual screened compound (PubChem ID-25175866) possess the lowest rerank score (-126.623) and the comparative ADMET analysis also shows that it is a potential and effective inhibitor for ROS1 among the selected inhibitors. CONCLUSION The present study provided a scope for the ROS1 inhibitor as a significant prevention for the non-small cell lung cancer (NSCLC). It can be upheld for the future studies as a promising support via in vivo studies. Copyright© Bentham Science Publishers; For any queries, please email at epub@benthamscience.net.Blood pressure is a highly controlled cardiovascular parameter that normally guarantees an adequate blood supply to all body tissues. This parameter is mainly regulated by vascular peripheral resistance and is maintained by local mediators (i.e., autacoids), and by the nervous and endocrine systems. Regarding the nervous system, blood pressure can be modulated at central level by regulating the autonomic output. However, at peripheral level there exists a modulation by activation of prejunctional monoaminergic receptors in autonomic- or sensory-perivascular fibers. These modulatory mechanisms on resistance blood vessels exert an effect on the release of neuroactive substances from the autonomic or sensory fibers that modify blood pressure. Certainly, resistance blood vessels are innervated by perivascular (i) autonomic sympathetic fibers (producing vasoconstriction mainly by noradrenaline release); and (ii) peptidergic sensory fibers [producing vasodilatation mainly by calcitonin gene-related peptide (CGRP) release]. In the last years, by using pithed rats, several monoaminergic mechanisms for controlling both the sympathetic and sensory perivascular outflows have been elucidated. Additionally, several studies have shown the functions of many monoaminergic auto-receptors and hetero-receptors expressed on perivascular fibers that modulate neurotransmitter release. On this basis, the present review (i) summarizes the modulation of the peripheral vascular tone by adrenergic, serotoninergic, dopaminergic, and histaminergic receptors on perivascular autonomic (sympathetic) and sensory fibers, and (ii) highlights that these monoaminergic receptors are potential therapeutic targets for the development of novel medications to treat cardiovascular diseases (with some of them explored in clinical trials or already in clinical use). Copyright© Bentham Science Publishers; For any queries, please email at epub@benthamscience.net.BACKGROUND HOTAIR, one of the most widely studied long non-coding RNAs in tumors, is closely related to tumor proliferation, migration, invasion and chemoresistance. OBJECTIVE Here, we studied the mechanism behind proliferation and chemoresistance processes. METHODS A total of 75 samples were collected from patients who underwent surgical resection of their gastric cancer and received trastuzumab treatment. Primary cells were isolated and cultured. We also developed a cell line overexpressing HOTAIR by constructing a lentiviral vector. These cell lines were studied using an array of established biomolecular methods. RESULTS We found that HOTAIR levels were inversely associated with sensitivity to trastuzumab in gastric cancer, and that overexpression of HOTAIR can promote the proliferation and invasion of gastric cancer cells. The sensitivity of cells overexpressing HOTAIR to two different types of human epidermal growth factor receptor 2 (HER2) inhibitors (trastuzumab and afatinib) showed that overexpression of HOTAIR is specific for trastuzumab resistance.