10 rezultātiem
Taxol, a naturally occurring diterpene with antitumor activity, induces tubulin polymerization to generate abnormally stable and nonfunctional microtubules. Previously, we showed that taxol has lipopolysaccharide (LPS)-like effects on macrophages. As LPS is a potent inducer of macrophage cytokine
OBJECTIVE
Microtubule disruption contributes to cellular and organic dysfunction, and is implicated in ischemia/reperfusion (I/R) injury. The purpose of this study was to explore the effects of taxol, a microtubule stabilizer, on cardiac functional recovery during reperfusion.
METHODS
Left
Taxol, a potent antitumor chemotherapeutic, promotes in vitro cytotoxic antitumor activities by normal host macrophage (M phi s). Because tumor growth induces functional changes among M phi populations, we determined whether fibrosarcoma growth (Meth-KDE) modified M phi responsiveness to the
Taxol, a microtubule stabilizer with anticancer activity, mimics the actions of lipopolysaccharide (LPS) on murine macrophages in vitro. Recently, it was shown that taxol-induced macrophage activation was inhibited by the LPS antagonist Rhodobacter sphaeroides diphosphoryl lipid A (RsDPLA). To
Two cell types, monocytes/macrophages and neutrophilic granulocytes, play a prominent role in the pathogenic effects of endotoxins during Gram-negative infections. We previously established that nanomolar concentrations of LPS induce the expression of new specific LPS-binding sites (LpsR) in bone
Apoptosis is characterized by degradation of cell components but plasma membrane remains intact. Apoptotic microtubule network (AMN) is organized during apoptosis forming a cortical structure beneath plasma membrane that maintains plasma membrane integrity. Apoptotic cells are also characterized by
Apoptosis is characterized by degradation of cell components but plasma membrane remains intact. Apoptotic microtubule network (AMN) is organized during apoptosis forming a cortical structure beneath plasma membrane that maintains plasma membrane integrity. Apoptotic cells are also characterized by
Taxol, a unique antimitotic drug, is thought to exert its antitumor activity by binding to and promoting the assembly of microtubules. Studies on the mechanism of action of Taxol have focused mainly on this ability to induce microtubule polymerization. Recent evidence suggests that Taxol affects
Taxol, a plant-derived antitumor agent, stabilizes microtubules. Taxol also elicits cell signals in a manner indistinguishable from bacterial lipopolysaccharide (LPS). LPS-like actions of Taxol are controlled by the lps gene and are independent of binding to the known Taxol target, beta-tubulin.
Recent studies on paclitaxel (Taxol), a microtubule-stabilizing agent and effective anti-cancer drug, have identified numerous cellular and molecular effects, such as induction of cytokines and tumor-suppressor genes, indirect cytotoxicity due to secretion of tumor necrosis factor, vast activation