1.Research progress on umbilical needling therapy of I-Ching
International Journal of Traditional Chinese Medicine 2021;43(1):88-92
Umbilical needling therapy of I-Ching is a new kind of acupuncture therapy conducted by Professor Qi Yong, based on and the comprehension of Zhou Yi, and enormous clinical experiences. It has now been accepted and usedgradually. Umbilical needling treatments of various diseases are with obvious effect. There are few clinical studies on the application of this therapy alone, and it is more combined with other therapies such as acupuncture, moxibustion and Traditional Chinese Medicine (TCM) for the purpose of healing. A wide range of diseases could be traeated by the combination of umbilical needling therapy and acupuncture. Umbilical needling therapy combined with moxibustion is often used to treat gynecological diseases. Internal diseases could be traeated by the combination of umbilical needling therapy and TCM. The umbilical needling therapy still lacks of systematic research and uniformed curative effect standard, and there are some difficulties and risks in practice. Therefore, its development has limitations. Besides, there are few studies on the "preventive treatment of disease" . The future research should base on the original theory, overcome the operational difficulties and carry out systematic research.
2.Protective effects of bisdemethoxycurcumin liposome on CCl_4-induced acute liver injury in mice and its mechanism
Chengfeng DAI ; Juan LI ; Luyan JIN
Chinese Journal of Clinical Pharmacology and Therapeutics 1999;0(04):-
AIM:To evaluate the therapeutic effects of bisdemethoxycurcumin liposome in mice with CCl4-induced acute liver injury model and its mechanism.METHODS:40 ICR mice were randomly divided into 4 groups:control group,model group,bisdemethoxycurcumin injection group and demethoxycurcumin liposome group(n=10).The liver injury model was made by injecting CCl4 in mouse's abdomen.The activities of ALT,AST in serum,the contents of MDA in liver and the pathological changes of hepatic tissue were investigated.RESULTS:Compared with those in control group,the serum ALT,AST activities and liver MDA contents of model group were highly increased,but those in bisdemethoxycurcumin injection group and bisdemethoxycurcumin liposome group were reduced significantly.The liver lobules were ameliorated obviously too,especially in bisdemethoxycurcumin liposome group.The pharmacodynamic action of liposome was better than that of the injection.CONCLUSION:Bisdemethoxycurcumin liposome has significantly protective effects on CCl4-induced acute chemical liver injury by reducing peroxidation of lipid in endotheliocyte of the liver.
3.Evaluation of anti-HBV effect of recombinant human serum albumin-interferon α-2b fusion protein in vitro
Wei ZHANG ; Xiaopeng DAI ; Luyan WANG ; Fujun WU ; Biyu QI ; Zhimin LIU ; Hunfeng LI ; Yusen ZHOU
Chinese Journal of Pharmacology and Toxicology 2014;(4):550-555
OBJECTlVE To study the anti-HBV activity of prepared recombinant human serum aIbu-min-interferon α-2b fusion protein(HSA-IFNα-2b) in vitro. METHODS HepG2 ceIIs were infected with recombinant adenovirus with green fIuorescence protein and 1.6-foId HBV DNA(AdGFP-HBV). The ex-pression of HBV antigens,HBsAg and HBeAg in cuIture medium was detected by ELISA assay. The tox-icity of HSA-IFNα-2b on HepG2 ceIIs was evaIuated by mTT assay.The reIative expression of HBV RNA in ceIIs and the absoIute quantity of HBV DNA in cuIture supernatant were determined by quantitative PCR assay. The activity of HBV enhancer Ⅰ was detected by DuaI-Reporter gene assay. RESULTS HBV couId repIicate and express in HepG2 ceIIs after infection with AdGFP-HBV. The expression of HBsAg and HBeAg in cuIture serum of HepG2 ceIIs infected with AdGFP-HBV decreased by 51.32%(P﹤0.01)and 50.26%(P﹤0.01),respectiveIy,when HSA-IFNα-2b 500 kU·L-1 was added. The same concentration of HSA-IFNα-2b didn't inhibit the proIiferation of HepG2 ceIIs,but inhibited HBsAg in a concentration-dependent manner. The regression formuIa between HBsAg inhibitory rate(Y)and con-centration of HSA-IFNα-2b(X)was Y=21.11 IgX+11.91(r 2 = 0.954),IC50 = 63.76 kU·L-1 . HBV RNA in ceIIs and HBV DNA in the cuIture serum decreased by 52.83%(P﹤0.01)and 53.07%(P﹤0.01), respectiveIy,when HSA-IFNα-2b 500 kU·L-1 was added. The activity of enhancer Ⅰ decreased by 40.04%(P﹤0.01)when HSA-IFNα-2b 500 kU·L-1 was added. CONCLUSlON The ceII modeI of HBV repIication for evaIuating anti-HBV agents is successfuIIy estabIished. HSA-IFNα-2b exhibits noticeabIe anti-HBV effect invitro.
4.Research progress of GALNT3 as a potential tumor molecular marker and drug target
Yixuan GAO ; Yichi ZHANG ; Luyan DAI ; Jiao MA
Journal of Shanghai Jiaotong University(Medical Science) 2024;44(11):1460-1465
Mucin-type O-glycosylation is one of the most common post-translational modifications in proteins,capable of altering protein conformation and biological functions.It plays a crucial role in biological processes such as cell signaling,cell adhesion,and immune responses.Polypeptide N-acetylgalactosaminyltransferase 3(GALNT3),as the initiating enzyme of mucin-type O-glycosylation,is of paramount importance in maintaining the homeostasis of human cells and tissues.Dysfunction of GALNT3 has been found to play a role in various diseases,such as calcium-phosphorus metabolism disorders and atherosclerosis.Additionally,GALNT3 is abnormally expressed in several types of tumors,including colorectal cancer,lung cancer,and ovarian cancer.Its expression is associated with the clinical pathological features of patients and poor prognosis,making it a potential biomarker for early tumor diagnosis and prognosis evaluation.Further research shows that GALNT3 can both regulate glycosylation levels to reduce adhesion between tumor cells and activate multiple metabolism-related pathways,promoting tumor cell invasion and metastasis.This review summarizes the role of GALNT3 in the development of malignant tumors and discusses the prospects and challenges of developing anti-tumor drugs targeting GALNT3.
5.Construction and validation of a dual-luciferase reporter gene system for screening and evaluating anti-liver fibrosis drugs that inhibit transcription of the gene encoding collagen I, chain a1.
Wei ZHANG ; Xiaoming DAI ; Hong YU ; Luyan WANG ; Shihui SUN ; Junfeng LI ; Yusen ZHOU
Chinese Journal of Hepatology 2014;22(10):747-751
OBJECTIVETo construct a dual-reporter gene system that will be applicable for use as a tool to screen and evaluate therapeutic drug compounds that inhibit transcription of the gene encoding collagen I, chain at1 (COL1A1).
METHODSThe full-length eDNA of transforming growth factor beta1 (TGFbeta1) was cloned by RT-PCR and inserted into two vectors, pcDNA3.1 and pJW4303, for construction of two eukaryotic expression vectors, pcDNA3.1-TGFbeta1 and pJW4303-TGFbeta1.Next, the promoter region of COL1A1, cloned by PCR using human genome DNA as template, was inserted into the vector pGL4.29 to construct the reporter gene vector, pGL4.29-COL1A1 promoter.All three recombinant vectors were verified by restriction enzyme digestion and DNA sequencing.Either the pcDNA3.1-TGFbeta1 or pJW4303-TGFbeta1 vector along with the pGL4.29-COL1A1 promoter vector or a pRL-null, control reporter, vector were co-transfected into the LX-2 human hepatic stellate cells to establish the transcription-activated dualreporter gene system.This system was used as a cell model for screening anti-liver fibrosis compounds that inhibit the transcription of COL1A1.Dexamethasone, a model drug that is known to inhibit the expression of COL1A1, was used as a control to validate the dual-reporter gene system.
RESULTSThe two TGFbeta1-expressing vectors and the reporter gene vector containing the promoter region of COL1A1 were successfully constructed.The results of a dual-reporter gene assay showed that TGFbeta1 co-expression increased the activity of the COL1A1 promoter by above 200-fold (t =21.78, P =0.0001), whereas in the absence of TGF31 co-expression the activity was below 2-fold (t =3.396, P =0.0274).The transcriptionactivated dual-reporter gene system was successfully established.The model drug, dexamethasone, effectively inhibited the activity of the COL 1A1 promoter in dose-dependent manner; the activity decreased 29.6% with 10 mumol/L dexamethasone (t =4.140, P =0.0144) and 53.9% with 100 mumol/L (t =6.193, P =0.0035).
CONCLUSIONThe dual-luciferase reporter system of TGFbeta1 and COL1A1 co-expression developed here can be used as a cell model to screen and evaluate anti-liver fibrosis compounds that inhibit activity of the COL1A1.
Base Sequence ; Collagen Type I ; genetics ; Drug Evaluation, Preclinical ; Genes, Reporter ; Genetic Vectors ; Humans ; Liver Cirrhosis ; drug therapy ; Luciferases ; Promoter Regions, Genetic ; Transcriptional Activation ; drug effects ; Transfection ; Transforming Growth Factor beta1
6.Survival Analysis of 121 Stage N2-IIIa Non-small Cell Lung Cancer Patients Treated with Surgery
YANG HELI ; DAI LIANG ; LI PEI ; SHEN LUYAN ; YAN WANPU ; FAN MENGYING ; CHEN KENENG
Chinese Journal of Lung Cancer 2015;(8):505-511
Background and objective It has still been controversial to treat N2-IIIa non-small cell lung cancer (NSCLC) patients by surgery or non-surgery. We retrospectively analysed the survival of 121 stage N2-IIIa NSCLC patients treated with surgery and explored their postoperatively long-term prognostic factors.Methods All of 1,290 patients in Beijing Cancer Hospital underwent resection by single-surgeon-team, among which 121 cases with stage N2-IIIa were enrolled in the study. We retrospectively analysed the impact of gender, age, smoking, perioperative chemotherapy, incision, histological type, vascular tumor emboli, pTstage and tumor size on survival of stage N2-IIIa patients, and compared the survival between pa-tients with single-and multi-station N2 metastasis, and between intraoperatively or postoperatively pathological N2 (IIIa1/a2) and preoperative N2 (IIIa3/a4). Univariate analysis was conducted byKaplan-Meier curve, and signiifcance test was performed byLog-rank test andCox regression factor analysis was applicated for multivariate analysis.Results hTe 5-yr of all the 121 cases was 43.6%, with a median survival time being 50.3 mo. Univariate analysis showed the 5-year survival rate in patients with single- and multi- station N2 metastasis were 58.3% and 25.5%, respectively (P=0.001), 5-year survival rate in patients with stage IIIa1/a2 and stag IIIa3/a4 were 52.7% and 38.4%, respectively (P=0.020). Multivariate analysis demonstrated that only single station N2 (HR=0.326, 95%CI: 0.186-0.572, P<0.001) and IIIa1/a2 (HR=0.494, 95%CI: 0.259-0.941, P=0.032) were independent prognostic factors for stage N2-IIIa lung cancer patients. Conclusion The prognosis of stage N2-IIIa NSCLC patients with single-station N2 metastasis were better than those with multi-station N2 metastasis. Besides, IIIa1/a2 patients had a better survival compared with stage IIIa3/a4 patients. A multi-disciplinary comprehensive treatment based on surgery may allow patients with high selective stage N2-IIIa NSCLC to obtain a comparatively satisfying long-term survival.
7.Apoptosis-inducing activity of synthetic hydrocarbon-stapled peptides in H358 cancer cells expressing KRAS
Cuicui LI ; Ni ZHAO ; Luyan AN ; Zhen DAI ; Xiaoyi CHEN ; Fan YANG ; Qidong YOU ; Bin DI ; Chi HU ; Lili XU
Acta Pharmaceutica Sinica B 2021;11(9):2670-2684
Lung cancers are the leading cause of cancer deaths worldwide and pose a grave threat to human life and health. Non-small cell lung cancer (NSCLC) is the most frequent malignancy occupying 80% of all lung cancer subtypes. Except for other mutations (