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Journal of Postdoctoral Research (JPR) - Vol. 4, No. 5, May 2016
 
Tumor Associated Carbohydrate Antigens in Targeted Therapy
Somdutta Saha, Ph.D.
Shrinking the Bacterial Genome
Jennifer Tsang, Ph.D.
Boc-Pyranones as building block towards biologically important Oligosaccharide Natural Products
Sumit O. Bajaj, Ph.D.
Entangled but Finicky Ingression Protein Complexes for Successful Cytokinesis
Maria Angeles Juanes, Ph.D.
Multi-Functional Inhibitor: a Novel Solution for Steel Corrosion in CO2-Enriched Environments
Dapeng Wang, Ph.D.
A methodology to obtain data at the slip-band scale from atomic force microscopy observations and crystal plasticity simulations
Yiyi Yang, Ph.D.
OPINION : The NRSA Payback Requirement
Peter Hecker, Ph.D.
EDITORIAL : Imaging Mass Spectrometry: Advancing systems approaches for biological sciences
Ravi Ramesh Pathak, Ph.D.
The Need for Speed in Matrix-Assisted Laser Desorption/Ionization Imaging Mass Spectrometry
Boone M. Prentice, Ph.D. and Richard M. Caprioli, Ph.D.
Paf1C mediates regulation of gene expression by the MAP Kinase Slt2
Maria Soriano-Carot, Barbara Martinez-Bono, Inma Quilis and J. Carlos Igual
12

Author(s)
Somdutta Saha, Ph.D.

Address
Computational Biology, R&D, GSK,1250 South Collegeville Road, Collegeville. Pennsylavnia 19426 USA.
Abstract:

Tumor associated carbohydrate antigens (TACAs) are a class of glycans with important structural and signaling functions playing a major role in cell proliferation, differentiation, and apoptosis relevant to oncology. Tumor cells expressing TACAs influence prognosis and survival of cancer patients. Careful consideration must be given to structural aspects during rational design of small molecule therapeutics that mimic the molecular topology of different classes of TACAs even though they are chemically dissimilar but functionally equivalent molecular structures.


Author(s)
Jennifer Tsang, Ph.D.

Address
Beth Israel Deaconess Medical Center, HMS, Boston, MA 02115, USA.
Abstract:

Synthetic biology is an interdisciplinary science, combining engineering and biological principles to design and construct new biological entities.  Not only is synthetic biology useful for understanding life’s complex circuitries, this discipline has many practical applications such as modifying biological pathways to produce nanoparticles, proteins and other molecules for specific uses.  As a rapidly evolving field, particularly due to recent advances in DNA sequencing and synthesis, synthetic biology holds great potential for transforming the future of biological research.


Author(s)
Sumit O. Bajaj, Ph.D.

Address
Department of Chemistry and Chemical Biology, The Scripps Research Institute, La Jolla, CA 92037, USA
Abstract:

Pyranones play an important role towards the synthesis of carbohydrate containing natural products and are the key building blocks for most of the natural/unnatural oligosaccharides. Boc-Pyranones synthesis is a De Novo approach (i.e, achiral starting material, 2-acetyl furan (1) converted to chiral products) via Noyori asymmetric hydrogenation, Achmatowicz oxidative rearrangement, Upjohn dihydroxylation. Particularly, Boc-protected pyranones have established broad applications towards the synthesis of natural/unnatural products containing carbohydrate motifs (e.g., total synthesis of mezzettiasides, a class of partially acetylated anti-cancer natural products via Pd-/B-dual catalysis and synthesis of cleistriosides/cleistetrosides, a series of rhamno-oligosaccharides).


Author(s)
Maria Angeles Juanes, Ph.D.

Address
Rosenstiel Center, Brandeis University, 415 South Street, Waltham, MA 02454, USA
Abstract:

Cytokinesis is the final stage of mitosis that leads to the physical separation of two daughter cells and comprises a sequence of events such as actomyosin ring contraction, ingression and remodeling of the extracellular matrix. All these processes are tightly regulated in space and time through a network of proteins. Defects in cytokinesis may increase the risk of tumor formation. Using a combination of cell biology and molecular techniques, along with biochemical experiments, Foltman et al. [27] have dissected how the “ingression protein complexes” (IPCs) localize and coordinate to ensure proper cytokinesis. Interestingly, a particular glycosyltransferase, named Chs2, is the hub protein that assures a successful cytokinesis in budding yeast.


Author(s)
Dapeng Wang, Ph.D.

Address
Department of Chemical and Biological Engineering, UC Boulder, Boulder, Colorado 80309, USA.
 

Abstract:

A recent advance in corrosion-resistance technology overcomes the problem of steel corrosion in CO2-enriched environments. At an inhibitor concentration of 10−3 M, the inhibition efficiency exceeded 98% where the steel corrosion rate is decreased by a factor of at least 100.


Author(s)
Yiyi Yang, Ph.D.

Address
School of Engineering, Brown University, Providence RI 02912, USA.
Abstract:

In this research article, a novel way to observe the micro-scale plastic deformation coupling atomic force microscopy and finite element calculation is introduced. The proposed methodology was also applied to study plastic strain localization quantitatively at the grain scale due to hydrogen embrittlement in the article.


Author(s)
Peter Hecker, Ph.D.

Address
J. Reuben Clark Law School, Brigham Young University, Provo, UT 84602, USA
Abstract:

The Ruth L. Kirschstein National Research Service Award program was created by Congress in 1974, and has successfully funded thousands of postdocs. The program includes a requirement for postdocs who receive funding from the program to sign a payback agreement. This obligates postdocs to continue performing health-related research or teaching for up to a year after receiving funds, or else pay back the stipend money they received. Economic and other concerns lead me to conclude that the payback requirement should be abandoned. Until that happens, the NIH, the NRSA Payback Service Center, training program directors, and university professors can take measures in administering NRSAs to ensure the fair treatment of postdocs.


Author(s)
Ravi Ramesh Pathak, Ph.D.

Address
Otolaryngology, BCM, Houston, Texas 77030, USA
Abstract:

The impact of technology in modern science is unequivocal. As scientific thought and design moves from traditional reductionism towards holism, advances in technology have altered the landscape of modern science. The modern systems biology approach models the dynamics and structure of biological systems. Implementing systems biology models in conjunction with imaging provides a way to refine understanding of biological systems.


Author(s)
Boone M. Prentice, Ph.D. and Richard M. Caprioli, Ph.D.

Address
Mass Spectrometry Research Center, Vanderbilt University, Nashville, TN 37232

Abstract:

Imaging mass spectrometry (IMS) has emerged as a powerful analytical tool enabling the direct molecular mapping of many types of tissue. Specifically, matrix-assisted laser desorption/ ionization (MALDI) represents one of the most broadly applicable IMS technologies. In recent years, advances in solid state laser technology, mass spectrometry instrumentation, computer technology, and experimental methodology have produced IMS systems capable of unprecedented data acquisition speeds (>50 pixels/second). In applications of this technology, throughput is an important consideration when designing an IMS experiment. As IMS becomes more widely adopted, continual improvements in experimental setups will be important to address biologically and clinically relevant time scales.


Author(s)
Maria Soriano-Carot, Barbara Martinez-Bono, Inma Quilis and J. Carlos Igual

Address
Burjassot (Valencia), Spain AND Boston, MA, USA.
Abstract:

The budding yeast, Saccharomyces cerevisiae, has been widely used as a model organism to study the molecular mechanisms that regulate gene expression in eukaryotic cells. In the yeast Cell Wall Integrity Pathway (CWI), the protein Kinase C, Pkc1, activates the MAP Kinase Slt2, which in turn targets the transcription factors Rlm1 and SBF (Swi4-Swi6) and the transcriptional complex Paf1C, to modulate and control the expression of cell wall integrity genes. To better describe the connection between the CWI components and the transcriptional regulation of the cell integrity genes, a series of Chromatin Immunoprecipitation (ChIP) assays were performed. Our results reveal that the MAPK Slt2, associates to the promoter of several cell wall housekeeping genes like FKS1, MNN1 and GAS1. The expression of these genes is reduced in slt2 and pkc1 mutant strains. However, .....

 
     
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