[Show abstract][Hide abstract] ABSTRACT: Notch3 receptor is one of the mammalian Notch family receptors (Notch1-4) which plays an important role in the regulation of cellular proliferation, differentiation, and apoptosis. Overexpression of Notch3 is associated with tumorigenesis. In order to assess the expression of Notch3 in Chinese non-small-cell lung cancer (NSCLC) patients and determine its association with prognosis, we designed a prospective study with five years of follow-up to evaluate Notch3 expression in NSCLC tissues and adjacent non-cancerous normal lung tissues from 131 patients undergoing surgical treatment by immunohistochemistry and western blot analysis. Notch3 had high expression in 67 of 131 cases of NSCLC (51.1 %), which was significantly higher than in adjacent noncancerous lung tissues. Moreover, Notch3 overexpression was significantly correlated with TNM stage (P = 5.41e-07 in squamous cell carcinoma, P = 5.338e-07 in adenocarcinoma) and lymph node metastasis (P = 0.00764 in squamous cell carcinoma, P = 0.01491 in adenocarcinoma). Kaplan-Meier survival analysis showed that the overall survival times in patients expressing Notch3 in NSCLC were shorter. Multivariate analysis further demonstrated that Notch3 was an independent prognostic factor for patients with NSCLC. Therefore, Notch3 might be a useful biomarker to predict the prognosis of patients with NSCLC.
[Show abstract][Hide abstract] ABSTRACT: To explore the expression of cancerous inhibitor of protein phosphatase 2A (CIP2A) in human cholangiocarcinoma tissues and adjacent non-cancerous normal bile duct tissues, and to investigate the clinicopathological signinficance of the CIP2A protein in cholangiocarcinoma patients.
Immunohistochemical staining was used to detect the expression of CIP2A protein in 57 cases (35 men and 22 women) of cholangiocarcinoma samples and 23 cases of para-cancerous normal bile duct samples. The results were analyzed with clinicopathological patameters and overall median survival time.
The positive rate of CIP2A protein expression in cholangiocarcinoma tissues was significantly higher than para-cancerous normal bile duct tissues. The expression of CIP2A was found to be not correlated with age, gender, smoking, grading, staging, lymph node metastasis, tumor site and hepatitis B virus (HBV) (p>0.05). Kaplan-Meier survival analysis showed that the overall survival time in patients with positive expression of CIP2A protein were shorter than in patients with negative expression of CIP2A (long rank=5.180, p=0.023). COX regression analysis implied that expression of CIP2A protein was an independent prognostic factor for cholangiocarcinoma patients (p<0.05).
CIP2A is overexpressed in human cholangiocarcinoma tissues, and overexpression of CIP2A correlates with poor prognosis. CIP2A expression may be a potential marker for biological malignancy.
No preview · Article · Jun 2013 · Hepato-gastroenterology
[Show abstract][Hide abstract] ABSTRACT: Ligand free Pd-catalyzed decarboxylative cross-coupling of potassium oxalate monoester and derivatives with aryl iodides and bromides is described. Functionalized aromatic esters can be efficiently synthesized via this method with only 1.0 mol % Pd(OAc)2 catalyst without any phosphine ligand. This method illustrates an inexpensive and operationally simple method for the preparation of aromatic esters and acids, which is especially beneficial for a large scale synthesis.
No preview · Article · Oct 2012 · Tetrahedron Letters
[Show abstract][Hide abstract] ABSTRACT: Cancerous inhibitor of protein phosphatase 2A (CIP2A) and survivin are aberrantly expressed in a wide range of human cancers, including lung tumors. In order to assess the expressions of these two proteins in Chinese non-small-cell lung cancer (NSCLC) patients and determine their correlation with prognosis, NSCLC tissues and adjacent non-cancerous normal lung tissues were collected from 97 patients undergoing surgical treatment and evaluated by immunohistochemistry staining. CIP2A or survivin immunoreactivity was detected in significantly more NSCLC tissues than in adjacent non-cancerous lung tissues (P < 0.05). Moreover, CIP2A expression in NSCLC correlated with TNM stage, while survivin expression correlated with TNM stage and lymph node metastasis. Kaplan-Meier survival analysis showed that the overall survival times in patients expressing either CIP2A or survivin protein in NSCLC were shorter. COX regression analysis indicated that expression of CIP2A protein was an independent prognostic factor for NSCLC patients (HR = 3.631, P = 0.015). Therefore, CIP2A expression in Chinese NSCLC patients may be a useful biomarker of biological malignancy.
No preview · Article · Aug 2011 · Medical Oncology