C3243
Description:
Ki: SphK with a Ki of about 5 μmol/L
Safingol is a sphingosine and PKC kinases inhibitor.
Sphingosine 1-phosphate, a product of sphingosine kinases (SphK), mediates various biological processes including cell proliferation, differentiation, motility, and apoptosis. Protein kinase C (PKC), is a family of protein kinase enzymes involved in controlling the function of other proteins through the phosphorylation of hydroxyl groups of serine and threonine amino acid residues.
In vitro: Safingol was identified as a potent competitive inhibitor of SphK and had significant in-vitro anticancer activity. Safingol could increase the in-vitro antitumor effect of various chemotherapeutic agents including cisplatin, doxorubicin, and
In vitro: The H727 and BON-1 carcinoid cell lines had been used for the in vitro studies. A cytotoxic effect of imatinib on both H727 and BON-1 carcinoid cells was observed in the dose –dependent manner [1].
Activators of GRK would cause phosphorylation of serine and threonine residues, which can then bind arrestin proteins, preventing reactivation of the signaling pathway.
Geographically, Saanich Peninsula is located on the southern end of Vancouver Island, north of the city of Victoria. It has arable land with the mildest climate in Canada. The annual precipitation varies from 635 millimeters in Victoria (city) and increases by 45% in the northern part of the Peninsula, particularly at the airport and nearby areas (Victoria, n.d.). Saanich Peninsula is situated in the south eastern part of the Nanaimo lowland and Vancouver Island ranges. Its eastern side is bordered by Cordova Channel and the western side by Saanich Inlet. The Peninsula is mainly underlain by fractured and faulted volcanic and igneous rocks (i.e., lithosphere). (Huntley et al., n.d; Agriculture and Agri-Food Canada, 1998b). The Peninsula has soils of different texture exposed in sea-cliff and wave-cut platform including sands and gravels; mud, rock; humic; gravely, sandy loam; silt, clay loam; and gravely, loamy sand. Some typical local soils and soil types in the Peninsula are Metchosin, Brigantine, Shawnigan, Langford, Saanichton, Qualicum, Shawnigan etc. (Huntley et al., n.d; Agriculture and Agri-Food
In every cell there is a family of interconvertible sphingolipids that specifically manage the life and death of that cell. This profile of factors is called the Sphingolipid Rheostat. If endogenous ceramide(a signaling metabolite of sphingosine-1-phosphate) is high, then cell death (apoptosis) is imminent. If ceramide is low, the cell is strong in its vitality.
Protein kinase C (PKC), which can phosphorylate serine and threonine, is a family of protein kinase enzymes involved in regulating the function of other proteins. Protein kinase C plays an important role in several signal transduction cascades. Protein kinase C has been implicated in modulating membrane structure events, mediating immune responses, regulating transcription, learning and memory, and regulating cell growth [2].
The journal article describes the data that was collected by the recent test of the drug, Rociletinib. The drug is described as a new development that has potential for treating the advanced cancerous tumors. The specific tumors that were analyzed had already developed a resistance to the medicine. Its clinical trials were done on a sample size of 130 patients. The 57 patients of the study that received the drug showed positive results in their treatments of NSCLC.
Causing the patient to die, or can you manage to only inhibit a single type of kinase, leaving the rest alone to do their jobs. By 1996, Gleevec (STI-571) was shown to kill cancer cells, while leaving normal cells healthy. In 1998, Ciba-Giegy (now Novartis) was ready to start phase 1 clinical trials in patients. By 2001, the FDA approved the drug for used in the treatment of
Sarcomas are rare and considerably heterogeneous malignant tumours with a plethora of different tumour behaviours, corresponding to almost 1.5% of all adult malignancies2. For most sarcoma subtypes the mainstay of management for localized disease is complete surgical resection with or without radiation. However, despite optimal treatment about 50% of patients with high grade tumours will develop metastatic disease. The outcome for patients with advanced STS is poor with a median overall survival of approximately 18 months. Furthermore, historically the treatment options for patients with advanced disease have been limited. The introduction of imatinib and other targeted therapies in gastro intestinal stromal tumours has in many ways been
The diacylglycerol (DAG) mediated regulation of protein kinase C (PKC) family of serine/threonine kinases plays a critical role in several intracellular signaling pathways and the pathology of several diseases including cancer, neurological, cardiovascular, and others. In consequence, PKC isozymes are being actively pursued as the subject of intense research and drug development. Depending on their enzymatic properties and activation mechanism, the mammalian PKC isoenzymes have been categorized into classical (calcium-, DAG-, and phospholipid-dependent), novel (calcium-independent, but DAG- and phospholipid-dependent), and atypical (calcium- and DAG-independent) subgroups. The DAGs selectively interact with the C1 domain of PKC isoenzymes.
cAMP-dependent PKA is a signalling biological system of serine/threonine kinase that involved a phosphorylation mechanism, which important in metabolism, proliferation, differentiation and apoptosis of cells (Bossis & Stratakis, 2004). cAMP also show a phosphorylation in CREB, the transcription factor cAMP response element-binding protein (Altarejos & Montminy, 2011).
The authors found that there was some variability in the expression and the splicing patterns of signaling molecules. From this variability, the authors focus on the Receptor tyrosine kinases (RTKs) because they are an important signaling molecules and is target for possible therapeutics. This variability could be a source for why some therapeutics that target RTKs are unsuccessful.
An Earthquake that registered 7.8 on the Richter scale that lasted approximately 30 seconds to 1 minute for the primary quake, and caused catastrophic damage to the City of Berkeley and LPHG. The earthquake was followed by aftershocks of varying strengths, which lasted for 96 hours, and caused the death of 500 people in the City of Berkeley and 31 deaths in LPHG including one of LPHG staff members that died of H1Z1 virus, after contracting the virus that had rampantly spread as a result of the earthquake aftermath.
Cancer is one of the leading causes of death worldwide as it can develop in almost any organ or tissue. Significant advances in understanding the cellular basis of cancer and the underlying biological mechanisms of tumour has been vastly improved in the recent years (Jiang et al. 1994). Cancer is a genetic disease which requires a series of mutation during mitosis to develop, its characteristics can be associated with their ability to grow and divide abnormal cells uncontrollable while in the mean time invade and cause nearby blood vessels to serve its need. Even though many people are affected by cancer today, the abilities which cancer cells have make it hard to find a single effective treatment for cancer. The focus of research now lies
As seen in these tumors, it is clear that c-src can be involved with cancer. It had been observed on several occasions that in abnormal tissues as well as cancer cells the level the c-src protein as well as kinase are elevated and furthermore that these levels continue to increase as the level of disease progresses. There was a clear correlation between c-src activity and cancer development. In breast cancer, they found that the c-Src when overexpressed is activated by HER1 interactions and this is what causes the high kinase activity in the cancer cells. As
As the world continues to suffer from these devastating diseases, researchers continue to find alternative therapeutic ways of addressing cancer treatment. It is on this premise that various immunotherapeutic alternatives have emerged and currently garnering the greatest level of attention and already raising hope throughout the world in addressing the treatment of NSCLC. However, this can no longer be viewed as a discovery but a wave in the medicine world that began in the 20th century. Various researchers have found the importance of the role of immune systems in fighting the growth of tumor caused by cancer cells. A study by Huncharek (2000) stated that specific immune boosters are capable of eliminating preclinical cancers. In contrast, Jermal et al. (2011) found that immunotherapy is an effective approach for the treatment of tumors that have already turned into solid. Similarly, the researchers highlighted that immunotherapy can be an effective approach to the treatment of melanoma as well as renal cell cancers (Lasalvia-Prisco, 2008). However, Jemal et al. (2011) noted that immunotherapy cannot achieve much in cancer treatment due to limitation brought about by the emission of immunosuppressive cytokines and subsequent loss of antigen expressions. Recent development in research studies on the immunotherapy approach to cancer treatment continues to elicit mixed reactions among researchers of medicinal ecology (Jadad et al., 1996). However, recent development in