Research on Mechanisms of Chinese Medicines in Prevention and Treatment of Postoperative Adhesion / 中国结合医学杂志

Postoperative adhesion (PA) is currently one of the most unpleasant complications following surgical procedures. Researchers have developed several new strategies to alleviate the formation of PA to a great extent, but so far, no single measure or treatment can meet the expectations and requirements of clinical patients needing complete PA prevention. Chinese medicine (CM) has been widely used for thousands of years based on its remarkable efficacy and indispensable advantages CM treatments are gradually being accepted by modern medicine. Therefore, this review summarizes the formating process of PA and the efficacy and action mechanism of CM treatments, including their pharmacological effects, therapeutic mechanisms and advantages in PA prevention. We aim to improve the understanding of clinicians and researchers on CM prevention in the development of PA and promote the in-depth development and industrialization process of related drugs.

Progress of researches on the role of neutrophil extracellular traps in the immune responses against parasites / 中国血吸虫病防治杂志

Neutrophil extracellular trap (NET) is a type of bead-like, fibrous and reticular substances that is actively released by activated inflammatory neutrophils during the stage of infections or inflammatory responses. NET, which is composed of chromatin DNA and multiple intracellular protein components, may wrap pathogens to limit their diffusions. Meanwhile, NET may kill pathogens via a wide range of antibacterial proteins, which is considered as the third antibacterial mechanism of neutrophils, in addition to phagocytosis and degranulation. Recent studies have shown the involvement of NET in the immune response against parasitic infections. This review summarizes the advances of NETs in the immune responses against parasitic infections, so as to provide insights into the elucidation of the pathogenesis and development of therapeutics of parasitic diseases.

Status analysis and thinking on experimental study on efficacy of Mori Fructus in treatment of cardiovascular diseases / 中国中药杂志

Cardiovascular diseases are the most important diseases that endanger national health, and its development process is complex and diverse. Various cardiovascular diseases caused by obesity, such as hyperlipidemia, hyperglycemia and atherosclerosis, are interrelated and interacted each other. Diet, as the main means of prevention and treatment, plays an important role in the occurrence and development of cardiovascular disease. Mori Fructus is one of the first ingredients that are listed in medicinal and edible food. With a wide range of applications in daily life, it contains polysaccharides(polysaccharide, APS), anthocyanins(anthocyanin, LCRA), flavonoids and other bioactive ingredients. With a wide range of antioxidant, anti-aging, hypoglycemic and hypolipidemic activities, these materials exert effects in alleviating diabetes, hyperglycemia, hyperlipidemia and other cardiovascular diseases. In this paper, we retrieved such databases as PubMed, Web of science, CNKI, VTTMS, Wan Fang, and collected literatures about the effect of single administration of mulberry on cardiovascular diseases in the past 15 years, with "mulberry and cardiovascular disease" as the key word, and summarized the latest progress. The results of many experimental studies have showed that different forms of mulberry can significantly alleviate obesity, diabetes, atherosclerosis, hyperlipidemia and hypertension, suggesting that the scope of action of Mori Fructus covers different pathological stages of cardiovascular diseases. This paper systematically analyzes and summarizes the application forms, efficacy and the existing problems of these experiments, and provides study thinking and development direction for the utilization and new product design of Mori Fructus-related products in the treatment of cardiovascular diseases.

Ligustrazine nano-spray against postoperative abdominal adhesion / 中国组织工程研究

BACKGROUND: Oxidative stress is one of the important mechanisms of postoperative abdominal adhesion. The nuclear factor-E2-related factor 2 (Nrf2)-antioxidant response element (ARE) signal pathway is an important endogenous anti-oxidation stress pathway. Our previous study found that ligustrazine nano-spray can inhibit the formation of postoperative abdominal adhesion in rats, and moreover, ligustrazine has an anti-oxidation effect. OBJECTIVE: To observe the effect of ligustrazine nano-spray on the expression of mRNAs and proteins related to the Nrf2-ARE signal pathway in rats with abdominal adhesion, and to investigate the mechanism by which ligustrazine nano-spray inhibits abdominal adhesion via regulating the Nrf2-ARE signal pathway. METHODS: Sprague-Dawley rats were randomly divided into sham group, model group, ligustrazine group and sodium hyaluronate group. In the sham group, only laparotomy was performed without modeling. In the model group, an abdominal adhesion model was created but no drug was used. In the ligustrazine group, ligustrazine nano-spray was used on the wound before incision suturing. In the sodium hyaluronate group, sodium hyaluronate was applied on the wound before incision suturing. RESULTS AND CONCLUSION: Compared with the model group, ligustrazine nano-spray reduced the levels of reactive oxygen species, tissue inhibitor of matrix metalloproteinase 1, but increased the level of matrix metalloproteinase 9 in the rat serum. The expression of Nrf2 and HO-1 mRNA and proteins was also up-regulated in the ligustrazine group relative to the model group. Therefore, ligustrazine nano-sprays can inhibit abdominal adhesions in rats, and its mechanism may be related to the regulation of Nrf2 and heme oxygenase 1 mRNA and proteins expression and the activation of Nrf2-ARE signaling pathway.

Effect of fibroblasts in breast cancer microenvironment on expression of TIGAR and Bcl-2 of breast cancer cells / 中国免疫学杂志

Objective:To investigate the effect of fibroblasts in breast cancer microenvironment on the expression of TIGAR and Bcl-2 in breast cancer cells and their effect on breast cancer growth.Methods: In vitro experiments,the co-cultured model of human breast cancer cell line MDA-MB-231 with human fibroblast line CCC-ESF-1 was established.The effect of fibroblasts on the expression of TIGAR and Bcl-2 in breast cancer cells was tested with reverse transcription quantitative polymerase chain reaction(RT-qPCR) and Western blot.Annexin V flow cytometry and caspase-3 activity assay were employed to detect the apoptosis of breast cancer cells.In vivo experiments,human breast cancer transplanted tumor model in nude mice was established and the tumor volume of nude mice was meas-ured.Immunohistochemistry was used to detect TIGAR and Bcl-2 expression in the transplanted tumor tissues of nude mice.Results:The results showed that the co-cultured fibroblasts could up-regulate the expression of TIGAR and Bcl-2 in MDA-MB-231 cells and inhibited the apoptosis of MDA-MB-231 cells in vitro.The fibroblasts implanted with breast cancer cells could up-regulate TIGAR and Bcl-2 expression in breast cancer tissues of tumor-bearing nude mice in vivo,whereas highly expressed TIGAR and Bcl-2 accelerated the tumor growth of tumor-bearing nude mice.Conclusion:The fibroblasts in breast cancer microenvironment up-regulate the expression of TIGAR and Bcl-2 in breast cancer cells co-cultured with fibroblasts.Highly expressed TIGAR and Bcl-2 inhibit the apoptosis of breast cancer cells and promote the growth of breast cancer.

Effects of two screening models for eye diseases in premature infants / 国际眼科杂志(Guoji Yanke Zazhi)

·AIM:To investigate and compare the application of two screening models in the detection of retinopathy of prematurity (ROP). ·METHODS: The clinical data of 600 premature infants (1200 eyes) who underwent screening of eye diseases in the Department of Ophthalmology during the period from January 2016 to January 2017 were analyzed retrospectively. The fundus lesions were examined with binocular indirect ophthalmoscope (BIO) and the third generation of wide-angle digital retinal imaging system (RetCam Ⅲ). The examination results and adverse events during operation were statistically analyzed. ·RESULTS:In 1200 eyes of 600 patients,the probabilities of ROP detected by BIO and RetCam Ⅲ were 10.92% and 10.75%, respectively (P>0.05). With BIO as the golden standard, the accuracy, sensitivity, specificity, positive predictive value and negative predictive value of RetCam Ⅲ in examining ROP were 98.67%, 93.13%, 99.35%, 94.57% and 99.16%, respectively. There was no significant difference in the stage of ROP detected by BIO or RetCam Ⅲ (P>0.05). The probabilities of non-ROP lesions examined by BIO and RetCam Ⅲ were 4.83% and 4.58%, respectively (P>0.05). With BIO as the golden standard, the accuracy, sensitivity, specificity, positive predictive value and negative predictive value of RetCam Ⅲ in examining fundus non-ROP diseases were 99.67%, 94.83%, 99.91%, 98.21% and 99.74%, respectively. During the screening of BIO and RetCam Ⅲ,there were 17 cases (2.83%) and 7 cases(1.17%) with adverse events, respectively (P<0.05).·CONCLUSION: The examination results of RetCam Ⅲ are basically the same as those of BIO for ROP and non-ROP diseases. However,RetCam Ⅲ has more advantages in reducing adverse events during operation.

Effect of different incision phacoemulsification on corneal endothelial function and tear film function in senile cataract patients / 国际眼科杂志(Guoji Yanke Zazhi)

·AIM: To explore the effect of different incision phacoemulsification on corneal endothelial function and tear film function in senile cataract (SC) patients. ·METHODS: Totally 90 SC patients (90 eyes) admitted to our hospital were randomly divided into the 2. 2mm group ( n = 47, 47 eyes, 2. 2mm corneal micro - incision phacoemulsification) and the 3. 0mm group ( n= 43, 43 eyes, 3. 0 mm clear corneal micro - incision phacoemulsification). The indexes of corneal endothelial function and tear film function were compared between the two groups before and after operation. ·RESULTS: There was no statistical difference on the average phacoemulsification time (APT), mean effective phacoemulsification time( EPT ),average phacoemulsification energy ( AVE) and preoperative and postoperative intraocular pressure between the two groups (P>0. 05). There were statistical differences on the tear break-up time (BUT), basal tear secretion test (ST-Ⅱ), corneal sodium fluorescein staining (SCSF) score, corneal endothelial cell count, central corneal thickness and the variation coefficient of corneal endothelial cells between the two groups (P<0. 05). At 1wk and 1mo after operation, the BUT in the two groups was significantly lower than that before operation (P<0. 05) while the ST-Ⅱ was significantly higher than that before operation ( P< 0. 05), and the SCSF first increased and then decreased (P < 0. 05 ), and corneal endothelial cell count was significantly lower than that before operation (P<0. 05), and the central corneal thickness and the variation coefficient of corneal endothelial cells significantly increased (P<0. 05). The changed degrees of BUT, ST-Ⅱ, SCSF score, corneal endothelial cell count, central corneal thickness and corneal endothelial cell variation coefficient in the 2. 2mm group were less than those in the 3. 0mm group (P<0. 05). ·CONCLUSION: Phacoemulsification for SC patients can cause some damage in corneal endothelial function and tear film function, and 2. 2mm corneal micro-incision have less damage and faster early recovery.

Status and thinking of quality supervision on imported medicinal materials in shortage / 中国中药杂志

With the continuous development of traditional Chinese medicine business, the types and amounts of Chinese materia medica resources are increasingly reduced. By reviewing the origins, trading sources, and existing quality standards of the available common Chinese madicinal materials in shortage, it was found that the large amount of imported medicinal materials in domestic market or clinical application were not due to the traditional paths such as envoys presenting tribute, business trade, war conflict, national migration, and tourist travel, but due to the shortage of resources in domestic origins. Meanwhile, the former quality control standard on traditional imported medicinal materials was out of date, and the new imported medicinal materials quality control standard was in absence, resulting in unclear origins, unknown origins and processing methods, as well as more and more prominent problems on mixed use of the different varieties with same name and the same varieties from different origins. On the one hand, this situation once again sounded the alarm for the development of Chinese medicine industry from the resource perspective. On the other hand, the confusion of new varieties in Chinese herbal medicine market has also brought a serious threat to the efficacy of Chinese medicine. It is pointed out that it is an effective way to ensure the drug safety of imported medicinal materials through strengthening quality supervision of shortage of traditional Chinese medicines based on the new pharmacopoeia standards.

Chemical biology: A multidisciplinary frontier in stem cell research / 第二军医大学学报

Chemical biology focuses on the discovery and use of chemical compounds to understand and manipulate biological systems. It has been applied in many fields, including stem cell research. Recently, stem cell research has made significant progresses. A better understanding of stem cell biology will also promote the translation of stem cell technology in regenerative medicine. Elucidating the mechanisms governing cell fate determination and developing strategies to precisely manipulate cell fates are the fundamental issues in stem cell research. The use of small molecules to manipulate stem cell behaviors, including self-renewal, differentiation and reprogramming, has become more and more popular and offered significant advantages over conventional genetic approaches for their convenience in use, high degree of temporal control and functional diversity. In addition, based on our long-term experience in small molecular drug development, the application of chemical compounds to modulate stem cell functions in vivo for regeneration and repair could be the future direction of regenerative medicine.

Effect of ligustrazine nanoparticles nano spray on transforming growth factor-β/Smad signal pathway of rat peritoneal mesothelial cells induced by tumor necrosis factor-α / 中国结合医学杂志

<p><b>OBJECTIVE</b>To study the effect of ligustrazine nanoparticles nano spray (LNNS) on transforming growth factor β (TGF-β)/Smad signal protein of rat peritoneal mesothelial cells (RPMC) induced by tumor necrosis factor α (TNF-α), and the anti-adhesion mechanism of LNNS in the abdominal cavity.</p><p><b>METHODS</b>The primary culture and subculture of rat peritoneal mesothelial cells (RPMC) was processed by trypsin digestion method in vitro. The third generation was identifified for experiment and divided into 5 groups: a blank group: RPMC without treatment; a control group: RPMC stimulated with TNF-α; RPMC treated by a low-dosage LNNS group (2.5 mg/L); RPMC treated by a medium-dosage LNNS group (5 mg/L); and RPMC treated by a high-dosage LNNS group (10 mg/L). Reverse transcription-polymerase chain reaction was applied to test the expression of fifibronectin, collagen I (COL-I), TGF-β mRNA, and Western blot method to test the Smad protein 7 expression of RPMC.</p><p><b>RESULTS</b>Compared with the blank group, a signifificant elevation in fifibronectin (FN), COL-I and TGF-β mRNA expression of RPMC were observed in the control group (P<0.05). Compared with the control group, LNNS suppressed the expressions of FN, COL-I and TGF-β mRNA in a concentrationdependent manner (P<0.05). The expression of Smad7 protein of RPMC was down-regulated by TNF-α stimulation, and up-regulated with the increase of LNNS dose (P<0.05).</p><p><b>CONCLUSIONS</b>TNF-α may induce changes in RPMC's viability, leading to peritoneal injury. LNNS could reverse the induction of fifibrosis related cytokine FN, COL-I and TGF-β, up-regulating the expression of Smad7 by TNF-α in RPMC, thus attenuate peritoneal injury by repairing mesothelial cells.</p>

Effect of aqueous extracts of several kinds of herbs on human platelet aggregation and expression of P-selectin in vitro / 中国结合医学杂志

<p><b>OBJECTIVE</b>To study the effect of aqueous extract of several kinds of herbs on human platelet aggregation and expression of P-selectin in vitro.</p><p><b>METHODS</b>Blood was collected from volunteers. Effects of the prepared water extracts of herbs on platelet aggregation were monitored on a Packs-4 aggregometer. The fluorescence intensity of water extracts of Caulis Spatholobi, Flos Carthami and Rhizoma Curcumae on the expression of P-selectin in human platelets of healthy persons was measured with flow cytometry.</p><p><b>RESULTS</b>Out of several herbs investigated, Flos Carthami and Rhizoma Curcumae potently inhibited platelet aggregation after incubation with platelet-rich plasma (PRP) for 15 min. Caulis Spatholobi Flos Carthami and Rhizoma Curcumae inhibited adenosine-5'-diphosphate (ADP) or platelet activating factor (PAF)-induced platelet aggregation in PRP in a dose-dependent manner. In contrast to Flos Carthami and Rhizoma Curcumae, Caulis Spatholobi could not inhibit thrombin-induced platelet aggregation. Despite its inability to inhibit thrombin-induced platelet aggregation in PRP, Caulis Spatholobi had a greater anti-aggregating activity in PRP induced by ADP or PAF. Caulis Spatholobi and Flos Carthami showed significant inhibitory effects on the expression of P-selectin.</p><p><b>CONCLUSIONS</b>Caulis Spatholobi, Flos Carthami and Rhizoma Curcumae have potent anti-platelet properties, and their inhibitory actions are mediated via different mechanisms. Caulis Spatholobi inhibited ADP-induced platelet aggregation but not by thrombin, indicating that its mechanism of action might be independent of the thromboxane pathway. The effect of Caulis Spatholobi and Flos Carthami were associated with suppressing the expression of P-selectin.</p>

Research on Chinese medicine pairs (II)--Their data mining / 中国中药杂志

Data mining technology has become a powerful tool in traditional Chinese medicine (TCM) research. In this paper, based on the principle and basic requirements of data mining, the mining methods and procedures were described. And then the application of data mining technology in Chinese medicine pair research was classified and summarized, such as the compatibility characters, characteristic pairs, dosage-effect relationship and property compatibility, which provide the direction and data base for modern research of Chinese medicine pair.

Progress of pathogenesis and clinical treatment of Hashimoto's thyroiditis / 中国中药杂志

Hashimoto's thyroiditis (HT) is a autoimmune disease that is highly incident year by year. Its clinical manifestations are alternative hyperthyroidism or hypothyroidism, relatively high Th1, excessively low Th2 and constantly increasing TGAb and TMAB. Currently, the disease is still difficult to be cured, and instable thyroid function makes it harder to be treated. Therefore, this essay makes a summary analysis on domestic and foreign studies on HT's pathogenesis, clinical manifestations and treatment, resulting that pure supplement or immunosuppressive therapy is hard to achieve notable efficacy, while existing traditional Chinese medicines could only mitigate clinical symposiums but did not reduce inflammation. Therefore, to look for methods and drugs for adjusting immunity imbalance by decreasing Th1 cell factors and increasing Th2 cell factors is significant to HT treatment to some extent.

Application of small molecule compounds inducing differentiation of stem cells / 药学学报

With the development of stem cells and regenerative medicine (treatment of various diseases using stem cells) research, the induction of differentiation of human stem cell technology has also made significant progress. The development of chemical biology offers a variety of small biological molecules for stem cell biology. This review focuses on how small molecule compounds (natural and synthetic) induce differentiation of stem cells.

Effects of resveratrol on proliferation of retinal vascular endothelial cells and expression of VEGF / 国际眼科杂志(Guoji Yanke Zazhi)

AIM: To study the effects of resveratrol on the proliferation of human retinal vascular endothelial cells induced by cobalt chloride-simulated hypoxia in vitro.METHODS: CoCl2 (100μmol/L) was used to simulate hypoxic condition, and human retinal vascular endothelial cells were cultured in vitro as model. The cell proliferation was determined by MTT method; SABC method was employed to test the expression of vascular endothelial growth factor (VEGF); and computer image analyzer was used to process data. The effects of resveratrol on the proliferation of vascular endothelial cells were observed.RESULTS: Resveratrol inhibited the proliferation of human retinal vascular endothelial cells induced by CoCl2 in a dose- and time-dependent manner in vitro, meanwhile VEGF expression in all groups which were administered medicine was down-regulated. Both kinds of inhibitive effects of resveratrol were statistically significant (P<0.01).CONCLUSION: Resveratrol can significantly inhibit the proliferation of human retinal vascular endothelial cells and the expression of VEGF, which may provide a new approach for prevention and treatment of retinal neovascular diseases.

Study on Acinetobacter baumannii plasmid with 3 types of beta-lactamase genes in a burn ward / 中华烧伤杂志

<p><b>OBJECTIVE</b>To study the transferrable character of Acinetobacter baumannii (AB) plasmids with 3 types of beta-lactamase gene.</p><p><b>METHODS</b>The plasmid of multi-drug resistant AB (donor) isolated from burn wound were transferred to E. coil ATCC25922 (receptor) through conjugation, and drug sensitivity was also observed. Drug-resistant gene and stability of filial generation and zygote were analyzed by PCR.</p><p><b>RESULTS</b>The drug-resistance of donor plasmids to Sulfamethoxazole, Ampicillin, Cefalotin, Cefpodoxime, Cefuroxime, Imipenem/Cilastatin and Ampicillin/Sulbactam, and three types of beta-lactamase gene were transferred to the receptor, and were also stably transmitted for passages. The minimum inhibitor concentration of receptor to Sulfamethoxazole was > 2 mg/L after conjugation with donor, and inhibitory character could be transferred to next generation.</p><p><b>CONCLUSION</b>bla(TEM-1), bla(PER-1) and bla(OXA-23) genes carried in the plasmid of AB can be transferred through conjugation and stably transmitted for passages, and it is one of the molecular mechanisms for AB with multi-drug resistance after burn infections.</p>

Effects of interleukin 13 on the differentiation and expression of transcription factor c-fos of HEL cells / 中华血液学杂志

<p><b>OBJECTIVE</b>To study the effects of IL-13 on the differentiation and expression of transcription factor c-fos of human erythroleukemia cell line (HEL) cells.</p><p><b>METHODS</b>Reverse transcription polymerase chain reaction (RT-PCR) was used to observe the mRNA expression of IL-13 receptor a 1, GP i b, vWF and c-fos, and Western blot and cytometry were used to analyse their protein expression.</p><p><b>RESULTS</b>IL-13 receptor a 1 was expressed on HEL cells. IL-13 (100 ng/ml ) up-regulated the mRNA expression of GP II b and vWF. The ratio of luminous absorption (LA) of GP I b to p-actin bands ( AB) was 1. 303 in control group, whereas was 2. 912 in experiment group; being 2. 23-fold higher than that in control group (P < 0. 05). The ratio of LA to AB for vWF was 0.217 in control group, and 0. 506 in experiment group; indicating a 2. 33-fold increase in experiment group (P <0. 05). The protein expression of GP I b and vWF was significantly increased in experiment group, compared with that in control group. IL-13 inducing the increased expression of c-fos mRNA and protein of HEL cells peaked at 30 min and 60 min, respectively. The ratio of LA to AB for c-fos was also increased at 30 min and 60 min (P <0. 05).</p><p><b>CONCLUSION</b>IL-13 prompts the differentiation of HEL cells and up-regulates the expression of c-fos.</p>

Effects of MAPK antagonist on TPO stimulated UT2 cells proliferation and differentiation / 中华血液学杂志

<p><b>OBJECTIVE</b>To explore the effects of MAPK antagonist on TPO stimulated UT7 cell proliferation and differentiation, and to elucidate the mechanism of TPO functioning on UT7 cells.</p><p><b>METHODS</b>EGFP pMSCV and MEK 1 pMSCV MEK 1 plasmids were transferred into UT7 cells. Phosphorylated MEK1 of UT7 cells was examined by Western blot. The proliferation and CD41 expression of UT7 cells transfected with mutant (ser222A) MEK1 or exposed to PD98059 were examined.</p><p><b>RESULTS</b>(1) 60.73% EGFP positive cells were obtained in retroviral vector MEK1 pMSCV transfected UT7cells. (2) In different time of TPO stimulating UT7 cells, the level of phosphorylated MEK1 was lower in experiment group than in control group. In experiment group, the level of phosphorylated MEK1 was decreased after stimulated by TPO for 1 hour, and almost disappeared after stimulated for 3 hours. (3) The effect of TPO on UT7 cell proliferation was inhibited by PD98059 and the transfected mutation MEK1 gene. The proliferation rate was 98.58% in DMSO control group, 39.00% in PD98059 group (P < 0.05), 102.13% in EGFP pMSCV group, and 48.94% in MEK1pMSCV (P < 0.05). (4) The CD41 expression on UT7 was inhibited by PD98059 and the transfected mutation MEK1 gene.</p><p><b>CONCLUSION</b>Phosphorylation of MEK1 in UT7 cells can be induced by TPO. There was a relationship between the TPO stimulating time and phosphorylation of MEK1. The effects of TPO on UT7 cell proliferation and CD41 expression is mediated by MAPK signal transduction pathway.</p>

Anti-tumor effect of recombinant retroviral vector-mediated human ANGPTL4 gene transfection / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>This study was designed to obtain a recombinant retroviral vector containing the human hepatocellular carcinoma-related gene ANGPTL4 (angiopoietin-like 4) cDNA and to evaluate the anti-tumor effect of recombinant retroviral vector-mediated human ANGPTL4 gene transfection.</p><p><b>METHODS</b>ANGPTL4 cDNA was cloned in vitro from normal human liver cells HL-7702 by using RT-PCR, and then subcloned into the plasmid vector pMSCV and sequenced. The retroviral plasmid vectors pMSCV-ANGPTL4, pVSV, and pGAG-POL were co-transfected into the packaging cell line 293 EBNA under mediation of lipofectamine. A high-titer retrovirus was obtained as a result, and HepG2 cells were infected with this retrovirus in vitro. Flow cytometry and fluorescence microscopy were used to detect expression of green fluorescence protein (GFP). The expression of ANGPTL4 mRNA in HepG2-ANGPTL4 cells was investigated using RT-PCR. The formation of tumors in nude mice and MTT assays were used to detect the growth of HepG2-ANGPTL4 cells in vivo and in vitro, respectively.</p><p><b>RESULTS</b>The cDNA sequence of the cloned ANGPTL4 gene was consistent with the recently reported sequence. Thus, the recombinant retroviral vector pMSCV-ANGPTL4 was constructed successfully. The titer of the packaged recombinant retrovirus was 1.4 x 10(6) infective viral grains/ml, and the rate of HepG2-ANGPTL4 cells expressing GFP was 68.45%, with an average intensity of fluorescence 31.67 times greater in HepG2-ANGPTL4 cells than in HepG2 cells. The expression of ANGPTL4 mRNA in HepG2-ANGPTL4 cells was higher than in HepG2-pMSCV cells (154% higher) or HepG2 cells (161% higher). The proliferation rate of HepG2-ANGPTL4 cells in vitro was obviously lower than those of HepG2-pMSCV cells and HepG2 cells (P <0.01). The mean volume and weight of tumors seeded from HepG2-ANGPTL4 cells were obviously lower than the mean volume or weight of tumors seeded from HepG2 cells and HepG2-pMSCV cells (P <0.01).</p><p><b>CONCLUSION</b>A stable ANGPTL4-transfected human liver cancer cell line HepG2-ANGPTL4 has been created. The transfer of the human ANGPTL4 gene mediated by a retroviral vector is a possibly effective approach for liver cancer therapy.</p>