W. W. Liu

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The insect midgut undergoes programmed cell death (PCD) during metamorphosis, but the molecular basis for this phenomenon has not been demonstrated. We report a mod(mdg4) protein [designated as mod(mdg4)1A] that is involved in hormonally regulated insect midgut PCD, from the lepidopteran Helicoverpa armigera. Mod(mdg4)1A is localized in the larval midgut(More)
Litchi (Litchi chinensis Sonn.) is an important tropical and subtropical evergreen woody fruit tree, and it has been shown that nitric oxide (NO) could promote litchi flowering. NO responsive genes of litchi (cv. Nuomici) primordia were identified through a suppression subtractive hybridization (SSH) library screen. We obtained 1 563 expressed sequences(More)
Animal steroid hormones are conventionally known to initiate signaling via a genomic pathway by binding to the nuclear receptors. The mechanism by which 20E initiates signaling via a nongenomic pathway is unclear. We illustrate that 20E triggered the nongenomic pathway through a plasma membrane G-protein-coupled receptor (named ErGPCR) in the lepidopteran(More)
Serine/threonine protein kinases phosphorylate protein substrates to initiate further cellular events. Different serine/threonine protein kinases have varied functions despite their highly conserved homology. We propose prodeath-S/TK, a prodeath serine/threonine protein kinase from the lepidopteran insect Helicoverpa armigera, promotes programmed cell death(More)
The objective of this study was to investigate the mechanical properties of a low-shrinkage acrylate liquid crystalline resin matrix (ALCRM), (4-3-(acryloyloxy)-2-hydroxypropoxy) phenyl 4-(3-(acryloyloxy)-2-hydroxypropoxy) benzoate, combined with nano-hydroxyapatite (na-HA). The ALCRM monomer and diluent monomer triethylene glycol dimethacrylate (TEGDMA)(More)
Online near-infrared spectroscopy was used as a process analysis technique in the synthesis of 2-chloropropionate for the first time. Then, the partial least squares regression (PLSR) quantitative model of the product solution concentration was established and optimized. Correlation coefficient (R (2)) of partial least squares regression (PLSR) calibration(More)
There is an accumulating body of experimental evidences validating focal adhesion kinase (FAK) as a therapeutic target and offering opportunities for anti-tumor drug development. In present study, we sought to synthesize twenty-eight potential FAK inhibitors as anti-tumor agents based on 1,2,4-triazole skeleton. The bioassay assays demonstrated that(More)
Cyclic stretch increases Na+/K+-ATPase activity and abundance in several tissues, including skeletal muscle cells. The present study was undertaken to investigate whether Na+/K+-ATPase undergoes acute changes in its catalytic activity in response to cyclic stretch. Na+/K+-ATPase activity increased after continuously stretched for 6 h, and reached the(More)
There are some romantic notions about the various uses of hyperbaric oxygen (HBO). For example, students have used HBO exposure to improve their levels of achievement (Le et al. 2005) and it has also been reported that HBO can exert a cosmetic effect. What is more, some individuals use HBO as a drug to treat almost all diseases. However, its effectiveness(More)
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