1.Preparation and chromatographic application of novel periodic mesoporous organosilicas
Chun LI ; Bin DI ; Weiqiang HAO ; Fang FENG ; Fang YAN ; Mengxiang SU
Journal of China Pharmaceutical University 2010;41(2):151-155
Novel aminopropyl-functionalized periodic mesoporous organosilicas (APMO) were successfully prepared by co-condensation of 1,2-bis (triethoxysilyl) ethane (BTSE) and 3-aminopropyltriethoxysilane (APTES) with the template of cationic surfactants cetyltrimethylammonium chlorine (C_(18)TAC) in basic medium.With the characterization measurements of powder X-ray diffraction (XRD),FT-IR and scanning electron microscopy (SEM) so on,APMO had such advantages as good monodisperse microshperes,uniformly orderd mesopore and large specific surface areas.These mesoporous materials were directly considered to be the chromatographic stationary phases and analyzed by HPLC evaluation.During the research,the as-prepared APMO column had better permeability and three polycyclic aromatic compounds realized separation.In addition,the as-prepared APMO column had certain advantages in fast analysis.
2.Advances in enrichment strategies for phosphoproteomics and appIication of phosphoproteomics in disease research
Weixin WU ; Jia YAN ; Xiying TAN ; Bo LI ; Mengxiang SU ; Fang YAN ; Bin DI
Journal of China Pharmaceutical University 2016;(1):19-29
Protein phosphorylation is one of the most common post-translational modifications (PTMs)in various organisms,which plays critical roles in the regulation of intracellular biological processes,such as cell prolifera-tion,signal transduction,metabolismis and tumorigenesis.However,the low abundance of phosphoprotein in the biological systems poses significant challenges of current analytical techniques.In order to further understand the phosphoproteomics,the roles of phosphorylated proteins in life process,discovery of biomarkers,diagnosis and treatment of disease,enrichment strategies of high efficiency have been developed,including the design of new nanomaterials and combination of a variety of analytical methods,et al.In this paper,we reviewed the develop-ment of enrichment strategies for phosphoproteomics and application of phosphoproteomics in disease.
3.Comparison of bone marrow smear, biopsy and flow cytometry in diagnosis of lymphoma patients with bone marrow involvement
Yunfei HU ; Yunhong HUANG ; Gang NI ; Jinhua LONG ; Mengxiang CHEN ; Fang YANG
Journal of Leukemia & Lymphoma 2013;22(12):729-731,735
Objective To compare the effectiveness,correlativity,and acceptability of the three methods:bone marrow smear,biopsy and flow cytometry in diagnosis of lymphoma patients with bone marrow involvement.Methods 68 cases of early stage lymphoma were studied by observing and comparing positive rates of the three methods:bone marrow smear,biopsy and flow cytometry.Results After confirming the bone marrow involvement,the positive rates for the 68 cases using bone marrow smear,biopsy and flow cytometry were 16.2 % (11/68),33.8 % (23/68) and 10.3 % (7/68) respectively.Bone marrow biopsy had the highest positive rate compared to the other methods.It was statistically significant when comparing the differences of the 3 methods (P < 0.05).According to the correlativity analysis of the 3 methods,bone marrow smear and biopsy correlated with each other (P =0.002),while flow cytometery did not (P =0.270).Conclusions Morphological examination of the bone marrow smear is a fundamental method to test bone marrow involvement in lymphoma.Bone marrow biopsy creates the highest positive rate and has clear advantage compared to the other methods,however,bone marrow smear must be used at the same time as a complement.
4.Research Progress of Pulmonary Drug Delivery System
Mengxiang FANG ; Hua ZHANG ; Mingchen CAO
Herald of Medicine 2018;37(3):302-305
The pulmonary drug delivery system is a new drug delivery system developed in recent decade.Its composi-tion and mode of administration are obviously different from those of the general preparation.The advantages of pulmonary drug de-livery system include high local drug concentration,no first pass effect and fast drug absorption.Currently,it has become an impor-tant means of treating lung diseases and promoting the drug absorption of macromolecules.The drug categories,excipients,inhala-tion devices and clinical application of pulmonary drug administration were analysed by literature reviews.Furthermore,the re-search progress and characteristics of pulmonary drug delivery system in recent years were also summarized,which provide refer-ence for further study of pulmonary drug delivery.
5.Progresses in the role of HMGB1/RAGE axis in tumor inflammation and the research of its targeting drug papaverine
Anqi FAN ; Xuhuan TANG ; Fang ZHENG ; Chenchen WANG ; Quan GONG ; Lian LIU ; Mengxiang GAO
Immunological Journal 2023;39(10):916-920
HMGB1's role in tumors is complex and diverse,and it exerts its biological function by combining with different receptors.One of the receptors is called RAGE,which is localized to the cell membrane and binds to HMGB1 released outside the cell.The HMGB1/RAGE axis promotes tumor development,moreover,tumor development and its drug resistance are closely related to inflammation.This article mainly reviews the molecular mechanism of HMGB1/RAGE axis in pro-inflammatory and protumor effects in pancreatic,colorectal and liver cancers.We also summarize the research progress of papaverine and its derivatives for the treatment of HMGB1/RAGE axis in tumor inflammation,with aims of providing new ideas for exploring the molecular mechanism of action in tumor inflammation,and providing a new theoretical basis for the research of HMGB1/RAGE axis therapeutics.