2.Structure,Function and Evolution of Baculoviral Inhibitor of Apoptosis Protein Gene
Rui ZHANG ; Qing YAO ; Jian-Xin PENG ; Hua-Zhu HONG ;
Microbiology 1992;0(01):-
Baculoviral IAP(inhibitor of apoptosis protein) gene was identified firstly in IAP gene family.The structurcal feature of baculoviral IAP genes are characterized BIR and RING domain;Despite similar to P35 in antiapoptotic function,baculovrial IAP and P35 differ in structure and mechnism of action.Phylogenetic analysis of IAP genes and lots of evidence sppport the origin of this viral gene by capture of a host gene early in the evolution of Lepidoptera.
3.Research Advances Baculovirus DNA polymerase gene
Yuan-Yuan QIAO ; Rong PENG ; Jian-Xin PENG ; Hua-Zhu HONG ;
Microbiology 1992;0(03):-
Baculovirus DNA polymerase gene belongs to an early gene of baculovirus. It is a necessary gene required for replication of virus in insect cells. It can encode DNA polymerase induced by virus. In the process of replication, DNA polymerase can bind to homologous regions and non-homologous regions, which are believed to act as the origins of virus DNA replication with other replication factors. In addition, DNA polymerase has advantages over occlusion protein and egt gene for resolving deep branching taxonomic relationships of baculovirus phylogenies.
4.Research progress and medicinal chemistry strategies of URAT1 inhibitors
Xiao-yu SHI ; Tong ZHAO ; Jian ZHANG ; Rui-peng LIANG ; Zhi-jiao ZHANG ; Xin-yong LIU ; Peng ZHAN
Acta Pharmaceutica Sinica 2022;57(10):2960-2971
The urate transporter 1 (URAT1) which controls urate reabsorption is a membrane transporter in the apical membrane of human renal proximal tubule epithelial cells. It was found that about 90% of patients suffer from hyperuricemia due to insufficient uric acid excretion. Therefore, the development of URAT1 inhibitors that can reduce the level of serum uric acid
5.Influence of Ginkgo biloba extract on proliferation of ACC-2 cell, Survivin and TIP30 gene expression in adenoid cystic carcinoma of lacrimal gland.
Po NIU ; Xin-xia ZHAO ; Fei YAN ; Yong-ming ZHOU ; Peng JIAN
China Journal of Chinese Materia Medica 2014;39(24):4860-4864
Exploring the influence of extract of Ginkgo biloba (EGB) on the proliferation, apoptosis of ACC-2 cell in lacrimal adenoid cystic carcinoma and analyzing the influence of EGB on the gene expression of Survivin and TIP30 based on the levels of the gene and protein. ACC-2 cell in human with ACC of lacrimal gland disposed by EGB of different concentration was in vitro cultured. MTT method was used for cell proliferation detection. Annexin V/PI double-staining flow cytometer was used to detect cell apoptosis and cell cycle. Survivin and TIP30 gene expression together with protein expression were analyzed by RT-PCR and Western blotting. And it is indicated that EGB has inhibitory effect on the proliferation of ACC-2 cell in vitro. Furthermore, the dose-effect relationship was significant. Compared with the control group, it had statistical difference (P <0.01). The inhibitory concentration 50% (ICso) is 88 mg . L-1. By flow cytometer examination, it was indicated that EGB can gradually increase ACC-2 cell in G0-G1 stage and decrease it in G2-M and S stage. With the increase of dose, the apoptosis rate of ACC-2 cell obviously increased (P <0.05 or P <0.01). Both of the expression results of RT-PCR and Western hybrid proteins have showed that the concentration of EGB increased, it could be seen a significant decrease in Survivin gene expression (P <0.01). Meanwhile, the TIP30 gene expression got a significant increase. Therefore, EGB can effectively inhibit ACC-2 cell Survivin gene expression in human with adenoid cysistic carcinoma of larcrimal gland as well as promoting TIP30 gene expression, inducing the ACC-2 cell apoptosis and inhibiting tumor cell proliferation, which provided a certain theoretical and experimental basis for the application of Chinese herbal medicinal ingredient in the treatment of tumors.
Apoptosis
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drug effects
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Apoptosis Regulatory Proteins
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metabolism
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Carcinoma, Adenoid Cystic
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drug therapy
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Cell Cycle
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Cell Line, Tumor
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Cell Proliferation
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drug effects
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Drugs, Chinese Herbal
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Gene Expression
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Ginkgo biloba
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chemistry
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Humans
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Lacrimal Apparatus
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drug effects
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Plant Extracts
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chemistry
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isolation & purification
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pharmacology
6.Clinicopathologic features of large-cell calcifying Sertoli cell tumor of the testis.
Jian-wei ZHANG ; Xin-min GOU ; Zhi LI ; Ting-sheng PENG
Chinese Journal of Pathology 2007;36(4):281-282
Adult
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Calcinosis
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metabolism
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pathology
;
surgery
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Humans
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Inhibins
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metabolism
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Male
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Orchiectomy
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S100 Proteins
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metabolism
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Sertoli Cell Tumor
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metabolism
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pathology
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surgery
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Testicular Neoplasms
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metabolism
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pathology
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surgery
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Testis
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metabolism
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pathology
;
surgery
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Vimentin
;
metabolism
7.Integration of burn treatment and rehabilitation for a child with extremely severe burn.
Hongming LI ; Jiaping ZHANG ; Jian CHEN ; Huapei SONG ; Qiushi LIU ; Xin FAN ; Yizhi PENG ; Jun WU
Chinese Journal of Burns 2015;31(2):130-134
This article reports the successful experience of integration of burn treatment and rehabilitation for a child suffering from 91% TBSA flame burn injury (with 60% TBSA full-thickness injury, 30% TBSA deep partial-thickness injury, and 1% TBSA superficial partial-thickness injury), severe inhalation injury, severe burn shock, stress ulcer, gastrointestinal bleeding and atelectasis of the right upper lung. The patient was given effective fluid infusion against shock, treatment for gastrointestinal bleeding, and other effective supportive treatment for functions of various organs after being admitted to our burn ward. When vital signs became stable at 30 hours post injury, bedside rehabilitation was begun. On post injury day (PID) 4, escharectomy was performed for both lower limbs, followed by microskin grafting and allogeneic skin covering. On PID 10, invasive infection of multi-drug resistant bacteria was found with accompanied high fever, and at the same time allograft began to disintegrate, with dissolution of large area of eschar, leading to a raw surface reaching 86% TBSA. Following debridement, dressing, application of compound polymyxin B ointment, temporary covering of wounds with porcine acellular dermal matrix, adjustment of antibiotics, patient's condition was finally stabilized. From PID 28 on, split-thickness skin grafting was conducted 7 times, and the raw surface of 75% TBSA involving the upper and lower limbs and trunk was successfully covered. At the same time, our rehabilitation team launched comprehensive rehabilitation measures comprising active exercise, occupational therapy, prevention of scar formation, organ function training and psychological intervention. Finally, the patient was able to walk unaided and fed herself when the wounds were almost entirely healed in 3 months after injury. Oriented forwards functional rehabilitation, strong cooperation between team members, and synchronous effective implementation of burn treatment and rehabilitation in the whole process are the keys to achieve successful integration of burn treatment and rehabilitation of this child.
Acellular Dermis
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Animals
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Anti-Bacterial Agents
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therapeutic use
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Burns
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rehabilitation
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therapy
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Cicatrix
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Debridement
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Humans
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Shock
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complications
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Skin
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Skin Transplantation
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Swine
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Trauma Severity Indices
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Treatment Outcome
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Wound Healing
8.Diagnosis and treatment of cerebellum abscess in 2 cases.
De-zhi YU ; Jian-xin QIU ; Xiao-peng HU
Chinese Journal of Otorhinolaryngology Head and Neck Surgery 2012;47(4):334-335
Brain Abscess
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diagnosis
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etiology
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therapy
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Cerebellar Diseases
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diagnosis
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etiology
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therapy
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Ear Diseases
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complications
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Humans
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Male
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Young Adult
9.Pharmacophore identification of novel dual-target compounds targeting AChE and PARP-1.
Xin-Lei GUAN ; Feng-Chao JIANG ; Yue WANG ; Peng-Fei WU ; Fang WANG ; Jian-Guo CHEN
Acta Pharmaceutica Sinica 2014;49(6):819-823
Multi-target drugs attract increasing attentions for the therapy of complicated neurodegenerative diseases. In this study, a computer-assisted strategy was applied to search for multi-target compounds by the pharmacophore matching. This strategy has been successfully used to design dual-target inhibitor models against both the acetylcholinesterase (AChE) and poly (ADP-ribose) polymerase-1 (PARP-1). Based on two pharmacophore models matching and physicochemical properties filtering, one hit was identified which could inhibit AChE with IC50 value of (0.337 +/- 0.052) micromol x L(-1) and PARP-1 by 24.6% at 1 micromol x L(-1).
Acetylcholinesterase
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metabolism
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Cholinesterase Inhibitors
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pharmacology
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Computer-Aided Design
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Drug Discovery
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methods
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Poly(ADP-ribose) Polymerase Inhibitors
10.Pathogenicity of diatraea saccharalis Densovirus to Host Insets and Characterization of its Viral Genome
Nazaire KOUASSI ; Jian-xin, PENG ; Yi, LI ; Cristina CAVALLARO ; Jean-Claude VEYRUNES ; Max BERGOIN
Virologica Sinica 2007;22(1):53-60
Pathogenicity of the Diatraea saccharalis densovirus (DsDNV) was tested on its host larvae.The results showed that up to 4 days after inoculation,no larvae mortality was observed and the infected larvae started to exhibit the infection symptoms from the fourth day.After 5 days of infection,the cumulative mortality of infected larvae increased significantly and reached 60% after 12 days and 100% after 21 days of infection,whereas that of the control group was only 10% and 20%,respectively,after same periods of infection,suggesting that the high mortality of infected larvae groups was due to the high pathogenicity of DsDNV.The size of the DsDNA was determined by Electron microscopy visualization of viral DNA molecules and gel electrophoresis of both native and endonuclease digested DNA fragments.The total length of the native DsDNA was about 5.95 kb.The DsDNV DNA was digested with 16 restriction enzymes and a restriction map of those enzymes was constructed with 41 restriction sites.Comparison of the restriction map of the DsDNV genome with those of the genomes ofJunonia coenia densovirus (JcDNV) and Galleria mellonella densovirus (GmDNV) indicated that the three densovirus genomes were found to share many identical restriction sites.Thus,most of the restriction sites of the following endonucleases Bam H Ⅰ,Hha Ⅰ,Xba Ⅰ,Cla Ⅰ,Asp 700,Spe Ⅰ,Nco Ⅰ and Bcl Ⅰ,were found to be conserved among the three densovirus genomes.Symmetrical cleavage sites mapped at the both ends of the genome suggested the presence of inverted terminal repeats (ITRs) whose size was estimated to be about 500 bp.The similar genome size,almost identical restriction sites and presence of an ITR of about 500 bp for these three densoviruses suggested that they belong to the same group of ambisense densoviruses.