Chen Y.,Shanghai University |
Shi M.,Shanghai University |
Yu G.-Z.,Shanghai University |
Qin X.-R.,Shanghai Chempartner Co. |
And 3 more authors.
World Journal of Gastroenterology | Year: 2012
AIM: To investigate the value of interleukin-8 (IL-8), a pro-inflammatory chemokine, in predicting the prognosis of pancreatic cancer. METHODS: Expression of IL-8 and its receptor CXCR1 was assessed by immunohistochemistry in pancreatic cancer and chronic pancreatitis samples. Enzyme-linked immunosorbent assay was used to detect the serum IL-8 levels in pancreatic cancer patients. Human pancreatic cancer tissues were heterotopically transplanted to the immune-deficiency mice to evaluate the effect of serum IL-8 on the tumorigenesis of the cancer samples. RESULTS: IL-8 and CXCR1 proteins were both overexpressed in pancreatic adenocarcinoma samples (55.6% and 65.4%, respectively) compared with the matched para-cancer tissues (25.9% and 12.3%, P < 0.01), or chronic pancreatitis (0% and 25%, P < 0.05). Serum IL-8 levels in pancreatic cancer patients (271.1 ± 187.7 ng/mL) were higher than in other digestive system tumors, such as gastric cancer (41.77 ± 9.11 ng/mL, P = 0.025), colorectal carcinoma (78.72 ± 80.60 ng/mL, P = 0.032) and hepatocellular carcinoma (59.60 ± 19.80 ng/mL, P = 0.016). In vivo tumorigenesis analysis further proved that tumor tissues from patients with higher serum IL-8 levels grew faster than those with lower IL-8 levels. CONCLUSION: IL-8 can be a fine serum marker for predicting the prognosis pancreatic cancer. © 2012 Baishideng. All rights reserved.
Peng W.,Fudan University |
Chen Z.-Y.,Fudan University |
Wang L.,Shanghai JiaoTong University |
Wang Z.,Shanghai ChemPartner Inc. |
Li J.,Fudan University
Genetics and Molecular Research | Year: 2013
MicroRNAs (miRNAs) are small non-coding RNAs that regulate the translation of targeted mRNAs. An increasing amount of evidence indicates that miRNAs play important role in cancer pathogenesis, apoptosis, proliferation, and differentiation as oncogenes or tumor suppressors. Recently, miRNA-199a has been shown to be involved in many human cancers, although the role of miRNA-199a-3p in gastric cancer has not yet been evaluated. In the present study, the expression of miRNA-199a-3p was found to be significantly downregulated in human gastric cancer tissues and cells. miRNA-199a-3p induced anti-proliferation effects on human gastric cancer cells. Furthermore, using quantitative RT-PCR (real-time polymerase chain reaction) and luciferase reporter assays, mTOR was identified as a direct target gene of miRNA-199a-3p that is downregulated by it. In conclusion, our findings suggest that miRNA-199a-3p is associated with human gastric cancer through its ability to decrease cancer cell proliferation and target the mTOR signaling pathway, and, therefore, may provide a novel therapeutic target for the treatment of human gastric cancer. ©FUNPEC-RP.
Yi F.,Fudan University |
Zhang X.-H.,Fudan University |
Yang C.R.,Shanghai Chempartner Co. |
Li B.-M.,Fudan University |
Li B.-M.,Nanchang University
PLoS ONE | Year: 2013
Dopamine (DA) receptors in the prefrontal cortex (PFC) modulate both synaptic and intrinsic plasticity that may contribute to cognitive processing. However, the ionic basis underlying DA actions to enhance neuronal plasticity in PFC remains ill-defined. Using whole-cell patch-clamp recordings in layer V-VI pyramidal cells in prepubertal rat PFC, we showed that DA, via activation of D1/5, but not D2/3/4, receptors suppress a Ca2+-dependent, apamin-sensitive K+ channel that mediates post-spike/burst afterhyperpolarization (AHP) to enhance neuronal excitability of PFC neurons. This inhibition is not dependent on HCN channels. The D1/5 receptor activation also enhanced an afterdepolarizing potential (ADP) that follows the AHP. Additional single-spike analyses revealed that DA or D1/5 receptor activation suppressed the apamin-sensitive post-spike mAHP, further contributing to the increase in evoked spike firing to enhance the neuronal excitability. Taken together, the D1/5 receptor modulates intrinsic mechanisms that amplify a long depolarizing input to sustain spike firing outputs in pyramidal PFC neurons. © 2013 Yi et al.
Hudson S.A.,University of Cambridge |
McLean K.J.,University of Manchester |
Surade S.,University of Cambridge |
Yang Y.-Q.,University of Cambridge |
And 5 more authors.
Angewandte Chemie - International Edition | Year: 2012
Pieces of the puzzle: The first fragment-based approach was used to target cytochrome P450 enzymes (CYPs) for drug development (see scheme). The experiments provide new insights into the binding site of the essential Mycobacterium tuberculosis CYP121 enzyme, and resulted in a promising novel lead compound based on fragment merging. © 2012 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.
Tian Z.,Huazhong Agricultural University |
He Q.,Huazhong Agricultural University |
Wang H.,Huazhong Agricultural University |
Liu Y.,Huazhong Agricultural University |
And 4 more authors.
Plant and Cell Physiology | Year: 2015
Ethylene response factors (ERFs) are unique to the plant kingdom and play crucial roles in plant response to various biotic and abiotic stresses. We show here that a potato StERF3, which contains an ERF-associated amphiphilic repression (EAR) motif in its C-terminal region, negatively regulates resistance to Phytophthora infestans and salt tolerance in potato. The StERF3 promoter responds to induction by salicylic acid, ABA ethylene and NaCl, as well as P. infestans, the causal agent of potato late blight disease. StERF3 could bind to the GCC box element of the HIS3 promoter and activate transcription of HIS3 in yeast cells. Importantly, silencing of StERF3 in potato produced an enhanced foliage resistance to P. infestans and elevated plant tolerance to NaCl stress accompanied by the activation of defense-related genes (PR1, NPR1 and WRKY1). In contrast, StERF3-overexpressing plants showed reduced expression of these defense-related genes and enhanced susceptibility to P. infestans, suggesting that StERF3 functions as a negative regulator of downstream defense- and/or stress-related genes in potato. StERF3 is localized to the nucleus. Interestingly, yeast two-hybrid assay and a bimolecular fluorescence complementation (BiFC) test clarified that StERF3 could interact with other proteins in the cytoplasm which may lead to its re-localization between the nucleus and cytoplasm, revealing a novel means of StERF3 regulation. Taken together, these data provide new insights into the mechanism underlying how StERF3 negatively regulates late blight resistance and abiotic tolerance in potato and may have a potential use in engineering late blight resistance in potato. © The Author 2015. Published by Oxford University Press on behalf of Japanese Society of Plant Physiologists.
Wang D.-M.,Northwest University, China |
Pu W.-J.,Northwest University, China |
Wang Y.-H.,Shanghai Chempartner Co. |
Zhang Y.-J.,Northwest University, China |
Wang S.-S.,Northwest University, China
Molecules | Year: 2012
A new flavonol glycoside together with five known phenolic compounds were isolated from the whole herb of Callianthemum taipaicum. The compounds were identified as isorhamnetin-3-O-α-L-arabinoside-7-O-β-D-glucoside (1), isorhamnetin-3-O-β-D-glucoside (2), dibutyl phthalate (3), (+)-1-hydroxylpinoresinol-4'-β-D-glucoside (4), pinoresinol-4'-O-β-D- glucoside (5) and 2-phenylethyl-β-primeveroside (6). Compound 1 was identified as a new flavonol glycoside. The compound 6 was isolated for the first time as natural product. All compounds were isolated for the first time from the Callianthemum genus. Furthermore, the 2D-NMR data of the four known compounds 2-5 are given for the first time in this paper. All the structures were identified on the basis of detailed spectral analysis. The compounds 1 and 4 exhibited certain antifungal activity. © 2012 by the authors.
Zhang X.,Shanghai Chempartner Co. |
Dwivedi C.,South Dakota State University
Frontiers in Bioscience - Scholar | Year: 2011
Alpha-santalol, a naturally occurring terpenoid, has been shown to have chemopreventive effects on both 7, 12- dimethylbenz(a)anthracene (DMBA)-initiated and 12-Otetradecanoylphorbol- 13-acetate (TPA)-promoted skin cancer development in CD-1 and SENCAR mice, and UVB-induced skin cancer developments in SKH-1 hairless mice in a concentration-dependent manner. Studies have demonstrated that α-santalol could be effective against skin carcinogenesis through both induction of apoptosis via caspase activation together with dissipation of mitochondria membrane potential and cytochrome c release in A431 cells, and inhibition of cell growth via induction of G2/M phase arrest in both A431 cells and melanoma UACC-62 cells by altering multiple cell cycle regulatory proteins and complexes. This review summarizes the chemopreventive effects and molecular mechanisms of α- santalol on skin cancer development in both animal models and skin cancer cell lines.
Dale E.,Lundbeck |
Zhang H.,Lundbeck |
Leiser S.C.,Lundbeck |
Xiao Y.,Shanghai Chempartner Co. |
And 4 more authors.
Journal of Psychopharmacology | Year: 2014
Vortioxetine, a novel antidepressant with multimodal action, is a serotonin (5-HT)3, 5-HT7 and 5-HT1D receptor antagonist, a 5-HT1B receptor partial agonist, a 5-HT1A receptor agonist and a 5-HT transporter (SERT) inhibitor. Vortioxetine has been shown to improve cognitive performance in several preclinical rat models and in patients with major depressive disorder. Here we investigated the mechanistic basis for these effects by studying the effect of vortioxetine on synaptic transmission, long-term potentiation (LTP), a cellular correlate of learning and memory, and theta oscillations in the rat hippocampus and frontal cortex. Vortioxetine was found to prevent the 5-HT-induced increase in inhibitory post-synaptic potentials recorded from CA1 pyramidal cells, most likely by 5-HT3 receptor antagonism. Vortioxetine also enhanced LTP in the CA1 region of the hippocampus. Finally, vortioxetine increased fronto-cortical theta power during active wake in whole animal electroencephalographic recordings. In comparison, the selective SERT inhibitor escitalopram showed no effect on any of these measures. Taken together, our results indicate that vortioxetine can increase pyramidal cell output, which leads to enhanced synaptic plasticity in the hippocampus. Given the central role of the hippocampus in cognition, these findings may provide a cellular correlate to the observed preclinical and clinical cognition-enhancing effects of vortioxetine. © The Author(s) 2014.
Shanghai Yingli Science And Technology Co., Shanghai Pharmvally Innovation Institution Of Biomedicine and Shanghai Chempartner Co. | Date: 2013-12-25
Disclosed are an aryl glycoside compound as represented by formula I or formular I, a pharmaceutically acceptable salt thereof, optical isomer thereof or a prodrug thereof. The present invention relates to a method of preparing said aryl glycoside compound and the use thereof. The aryl glycoside compound of the present invention has an excellent ability on inhibit SGLT activity, especially SGLT2 activity, and is diabetes-fighting medicine with great potential.
Shanghai Chempartner Co. and Shanghai Yingli Science And Technology Co. | Date: 2012-02-17
Disclosed are an aryl glycoside compound as represented by formula I or formular I, a pharmaceutically acceptable salt thereof, optical isomer thereof or a prodrug thereof. The present invention relates to a method of preparing said aryl glycoside compound and the use thereof The aryl glycoside compound of the present invention has an excellent ability on inhibit SGLT activity, especially SGLT2 activity, and is diabetes-fighting medicine with great potential.