Publications by authors named "Pei-Wei Chen"

A Wheeler graph represents a collection of strings in a way that is particularly easy to index and query. Such a graph is a practical choice for representing a graph-shaped pangenome, and it is the foundation for current graph-based pangenome indexes. However, there are no practical tools to visualize or to check graphs that may have the Wheeler properties.

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Morphologically tunable copper oxide-based nanomaterials on Cu wire have been synthesized through a one-step alkali-assisted surface oxidation process for non-enzymatic glucose sensing. Subsequently, copper oxide-based nanomaterials on Cu wire as a supporting matrix to deposit manganese oxide for the construction of heterostructured Mn-Cu bimetallic oxide architectures through spontaneous redox reaction in the KMnO solution for supercapacitors. Field emission scanning electron microscopy (FESEM), field emission transmission electron microscopy (FETEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) confirmed that morphological and phase transformation from Cu(OH) to CuO occurred in copper oxide-based nanomaterials on Cu wire with different degrees of growth reaction.

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Dengue virus (DENV) is the causative agent of dengue fever, dengue hemorrhagic fever, and dengue shock syndrome and is endemic to tropical and subtropical regions of the world. Our previous studies showed the existence of epitopes in the C-terminal region of DENV nonstructural protein 1 (NS1) which are cross-reactive with host Ags and trigger anti-DENV NS1 Ab-mediated endothelial cell damage and platelet dysfunction. To circumvent these potentially harmful events, we replaced the C-terminal region of DENV NS1 with the corresponding region from Japanese encephalitis virus NS1 to create chimeric DJ NS1 protein.

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Transcriptome profiling has been used to identify genes expressed in pollen tubes elongating in vitro; however, little is known of the transcriptome of in vivo-grown pollen tubes due to the difficulty of collecting pollen that is elongating within the solid maternal gynoecium. Using a pollen-specific promoter (ProLAT52) to generate epitope-tagged polysomal-RNA complexes that could be affinity purified, we obtained mRNAs undergoing translation (the translatome) of in vivo-grown pollen tubes from self-pollinated gynoecia of Arabidopsis thaliana. Translatomes of pollen grains as well as in vivo- and in vitro-cultured pollen tubes were assayed by microarray analyses, revealing over 500 transcripts specifically enriched in in vivo-elongating pollen tubes.

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Tiller initiation and panicle development are important agronomical traits for grain production in Oryza sativa L. (rice), but their regulatory mechanisms are not yet fully understood. In this study, T-DNA mutant and RNAi transgenic approaches were used to functionally characterize a unique rice gene, LAGGING GROWTH AND DEVELOPMENT 1 (LGD1).

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