Thomas Tan

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Dynamin I and at least five other nerve terminal proteins, amphiphysins I and II, synaptojanin, epsin and eps15 (collectively called dephosphins), are coordinately dephosphorylated by calcineurin during endocytosis of synaptic vesicles. Here we have identified a new dephosphin, the essential endocytic protein AP180. Blocking dephosphorylation of the(More)
In an investigating study to trace the productivity changes of a commercial software project, which uses incremental and iterative development model, we've found evidence that attributes such as staffing stability, design compatibility/ adaptability to incremental and iterative development, and integration and testing would have significant impact on(More)
Motivation • Software testing is one of the most labor-intensive activities in software development life cycle and consumes 30%-50% of total development effort • Traditional testing methodologies are often value neutral • In practice, 80% of the value often comes from 20% of the software • Under the market pressure, the testing effort are usually compressed(More)
AIMS Fractalkine (CX3CL1) is a membrane-bound chemokine that signals through the G protein-coupled receptor CX3CR1 that is implicated in the development of atherosclerosis. We have previously reported that CX3CR1 is expressed by primary human coronary artery smooth muscle cells (CASMC), where it mediates chemotaxis towards CX3CL1. We sought to determine the(More)
We investigated the mechanisms of MDR1 gene activation by CCAAT/enhancer binding protein beta (C/EBPbeta, or nuclear factor for interleukin 6) in human cancer cells. Transfection of the breast cancer cell line MCF-7 and its doxorubicin-selected variant MCF-7/ADR by either C/EBPbeta or C/EBPbeta-LIP (a dominant-negative form of C/EBPbeta) confirmed their(More)
With the increasing demand of software capabilities in both business and government operations, building trustworthy software become critical for the success of the organization. However, the growth of Internet throws different kinds of malicious and/or unintentional threats into the mix by providing endless points of attacks that threatens the dependency(More)
General software cost parameters such as size, effort distribution, and productivity are necessarily imprecise due to variations by domain. To improve this situation, empirical software cost analysis using the primary US DoD cost database has been segmented by domain. This analysis supports a software cost estimation metrics manual for improvements in(More)
The frequent development of drug resistance to targeted therapies in cancer patients has stimulated interest in strategies counteracting resistance. Combining immunotherapies with targeted therapies is one such strategy. In this context, we asked whether human NK cells can target melanoma cells that have acquired resistance to selective inhibitors targeting(More)