{"id":502,"date":"2019-05-05T14:24:46","date_gmt":"2019-05-05T07:24:46","guid":{"rendered":"http:\/\/kinaseinhibitorlibrary.com\/?p=502"},"modified":"2022-01-13T16:33:29","modified_gmt":"2022-01-13T09:33:29","slug":"superior-brake-system-decided-enabling-fast-approaches-turns","status":"publish","type":"post","link":"http:\/\/kinaseinhibitorlibrary.com\/index.php\/2019\/05\/05\/superior-brake-system-decided-enabling-fast-approaches-turns\/","title":{"rendered":"By considering that a superior brake system decided by enabling fast approaches to turns"},"content":{"rendered":"

The apparent on\/off functions of PTPN6 and CD3E may allow a T cell to initiate signaling events with maximal acceleration and then avoid deleterious overshoots through application of a molecular brake. Physiologically, we speculate that bang-bang control of TCR signal initiation may allow a T cell to launch rapid but controlled responses to infection. T cells scan antigen-presenting cells quickly and have been shown to decide if foreign antigen is present in under 1 min. Thus, the effect of a fairly short delay in phosphorylation of LAT or WAS, for example, could potentially have a major impact on the number of antigen-specific T cells responding to an infection. Bang-bang control is operative in gene circuits with negative autoregulation and in stem cell population dynamics and may represent a widely used design principle of cellular regulatory systems. Most cell surface glycans are highly sialylated and often involved in cell-cell and\/or cell-extracellular matrix interaction. This involvement is mediated through I. their negative charge and II. by their interaction with specific Sia-binding proteins. Through this interaction Sia play an important role in various biological processes such as growth, development, immunology, pathology and host-pathogen interactions. Aberrant expression of Ginsenoside-F4<\/a> sialylation has been observed as a characteristic feature for a variety of cancers, which enables cancer cells to escape from the immune surveillance and support these cells for increased migration and metastatic rates. Ligands for Sia-lectins, which are generated by sialyltransferases bind to Sia-lectins, such as selectins at the metastatic site and expand the cancer cell population. In addition, Sia also protect cancer cells from chemo- and radiation-therapy. Tumor cells of neural origin often express the neural cell adhesion molecule 1. This is known to be posttranslationally modified at the IgG domain V of N-glycans by polySia. PolySia have a unique structure of repeated units and can reach chain lengths of more than 50 sialic acid residues in mammals, which is primarily expressed on neural cell adhesion molecule 1. The biosynthesis of Sia starts in the cytosol. The physiological precursor of all Sia is N-acetylmannosamine. In a series of studies we provided evidence that the cellular Sia content can be metabolically engineered simply by feeding cells with synthetic Nacyl-modified D-mannosamines such as ManNProp or ManNPent. These synthetic Sia-precursors are taken up by the cells and are efficiently metabolized by the cellular sialylation machinery to the respective Sia. Neuroblastoma is one of the most frequent pediatric cancers, affecting children worldwide. The heterogeneity and complexity arose from various mutations. v-myc avian myelocytomatosis viral oncogene neuroblastoma derived homolog or anaplastic lymphoma receptor kinase, amplification and other genetic factors decide the aggressiveness and recurrence nature of neuroblastoma. Since neuroblastoma has restricted targets for the tumor specific immunotherapy, it is a challenge to develop a novel Dimesna<\/a> strategy to treat aggressive neuroblastoma. Here we focused on targeting hyper-sialylation through MSE using neuroblastoma cells and modified Sia-precursors. We found that depending on the MSE strategy, sialylation and polysialylation of neuroblastoma cells are reduced and that as a consequence migration and invasion are decreased and the sensitivity towards anticancer drugs, such as 5-fluorouracil or cisplatin and radiation, is increased.<\/p>\n","protected":false},"excerpt":{"rendered":"

The apparent on\/off functions of PTPN6 and CD3E may allow a T cell to initiate signaling events with maximal acceleration and then avoid deleterious overshoots through application of a molecular brake. Physiologically, we speculate that bang-bang control of TCR signal initiation may allow a T cell to launch rapid but controlled responses to infection. T … Continue reading By considering that a superior brake system decided by enabling fast approaches to turns<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"_links":{"self":[{"href":"http:\/\/kinaseinhibitorlibrary.com\/index.php\/wp-json\/wp\/v2\/posts\/502"}],"collection":[{"href":"http:\/\/kinaseinhibitorlibrary.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/kinaseinhibitorlibrary.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/kinaseinhibitorlibrary.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/kinaseinhibitorlibrary.com\/index.php\/wp-json\/wp\/v2\/comments?post=502"}],"version-history":[{"count":1,"href":"http:\/\/kinaseinhibitorlibrary.com\/index.php\/wp-json\/wp\/v2\/posts\/502\/revisions"}],"predecessor-version":[{"id":503,"href":"http:\/\/kinaseinhibitorlibrary.com\/index.php\/wp-json\/wp\/v2\/posts\/502\/revisions\/503"}],"wp:attachment":[{"href":"http:\/\/kinaseinhibitorlibrary.com\/index.php\/wp-json\/wp\/v2\/media?parent=502"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/kinaseinhibitorlibrary.com\/index.php\/wp-json\/wp\/v2\/categories?post=502"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/kinaseinhibitorlibrary.com\/index.php\/wp-json\/wp\/v2\/tags?post=502"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}