Xiangyun Wang

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The search for novel antimalarial drug targets is urgent due to the growing resistance of Plasmodium falciparum parasites to available drugs. Proteases are attractive antimalarial targets because of their indispensable roles in parasite infection and development, especially in the processes of host erythrocyte rupture/invasion and hemoglobin degradation.(More)
In past studies, we demonstrated regulation of CFTR Cl channel function by protein kinase C (PKC)-epsilon through the binding of PKC-epsilon to RACK1 (a receptor for activated C-kinase) and of RACK1 to human Na(+)/H(+) exchanger regulatory factor (NHERF1). In this study, we investigated the site of RACK1 binding on NHERF1 using solid-phase and solution(More)
Our findings in the Helsinki Influenza Study and the Danish Forty Year Study lead us to conclude that a 2nd-trimester maternal influenza infection may increase risk for adult schizophrenia or adult major affective disorder. More recently we have also reported an increase of unipolar depression among offspring who were exposed prenatally to a severe(More)
BACKGROUND Signals between stem cells and stroma are important in establishing the stem cell niche. However, very little is known about the regulation of any mammalian stem cell niche as pure isolates of stem cells and their adjacent mesenchyme are not readily available. The prostate offers a unique model to study signals between stem cells and their(More)
Activity of Na+-K+-2Cl- co-transport (NKCC1) in epithelia is thought to be highly regulated through phosphorylation and dephosphorylation of the transporter. Previous functional studies from this laboratory suggested a role for protein phosphatase 2A (PP2A) as a serine/threonine protein phosphatase involved in the regulation of mammalian tracheal epithelial(More)
Regulation of the CFTR Cl channel function involves a protein complex of activated protein kinase Cepsilon (PKCepsilon) bound to RACK1, a receptor for activated C kinase, and RACK1 bound to the human Na(+)/H(+) exchanger regulatory factor (NHERF1) in human airway epithelial cells. Binding of NHERF1 to RACK1 is mediated via a NHERF1-PDZ1 domain. The goal of(More)
Up to now, most of the hypoxia markers contain only one nitroimidazole redox centre, such as Oxo[[3,3,9,9-tetramethyl-1-(2-nitro-1H-imidazol-1-yl)-4,8-diazaundecane-2,10-dione dioximato] (3-)-N,N',N″,N″']-technetium ((99m)Tc-1, BMS181321). Introducing a second nitroimidazole redox centre may enhance the hypoxic accumulation of the markers. In the present(More)
A new triterpenoid saponin, 3β,29-dihydroxy-olean-12-en-28-oic acid 28-O-β-D-glucopyranosyl ester (1), together with four known triterpenoid saponins, i.e., oleanolic acid 28-O-β-D-glucoside (2), chikusetsusaponin IVa methyl ester (3), calenduloside E (4), and calenduloside E 6'-methyl ester (5), was isolated from Salicornia europaea Linn. Their structures(More)
BACKGROUND The global gene expression profiles of adult and fetal murine prostate stem cells were determined to define common and unique regulators whose misexpression might play a role in the development of prostate cancer. METHODOLOGY/PRINCIPAL FINDINGS A distinctive core of transcriptional regulators common to both fetal and adult primitive prostate(More)