1.Long noncoding RNA and tumor
International Journal of Surgery 2011;38(5):349-352
There has been increasing evidence that transcription of non-coding genome sequence is important to life:Relative to the protein coding sequence and a variety of small molecule RNA.IncRNA research is still only in its infancy.Its function and regulation need to be of further studied.In this paper,the current relationship between the tumor and the IncRNA is reviewed.IncRNA may provide new basis and targets for cancer diagnosis and treatment.
2.Effect of dicetaxin combined with psychological intervention on early cognitive function in the patients with hip arthroplasty
Chunsheng LI ; Xiangwu KANG ; Fuqiang WANG
Chinese Journal of Biochemical Pharmaceutics 2017;37(7):294-295,298
Objective To study the effect of eicetaxin combined with psychological intervention on early cognitive function in the patients with hip arthroplasty.Methods From January 2015 to December 2016 in our hospital, 80 cases with hip arthroplasty were selected as the research object, which were divided into two groups (the control group and the observation group) according to intervention methods, 40 cases in each groups.The control group were given dicetaxin, the observation group were received dicetaxin combined with psychological intervention.The clinical data in the two groups were compared.Results After intervention, the cognitive function in the observation group was better than that in the control group;the clinical intervention effect in the observation group (95.0%) was better than that in the control group (72.5%);The incidence of adverse reactions (7.5%) in the observation group is lower than that in the control group (40.0%).The difference of the above data in the two groups was statistically significant(P< 0.05).Conclusion The clinical effect is significant that dezocine combined with psychological intervention were used on patients with hip arthroplasty, which can improve the early cognitive function in the patients, is worthy of clinical application.
3.The preliminary study on the bone marrow-derived mesenchymal stem cells migrating toward glioma
Chunhui LI ; Baohua JIAO ; Chunsheng KANG ; Xiaozhi LIU
Chinese Journal of Nervous and Mental Diseases 2006;32(4):289-293
Background Bone marrow-derived mesenchymal stem cells (MSCs) have been reported to have the ability of migrating after transplantation into rat model of traumatic brain injury. In this study, MSCs'characteristic of tropism for intracranial glioma was explored following being labeled and transplanted into brain and blood of gliomabearing rats.Methods Cellulae medullares were cultured to get pure MSCs. The cell surface antigen and cell cycle of MSCs were detected to confirm their identity by flow cytometry. MSCs were marked with BrdU and then were injected into contralateral brain or collateral internal carotid artery of rats bearing glioma. 2 weeks later, the brains were resected and pathological sections were made. Immunohistochemistry and immunofluorescence technology were performed to detect MSCs.Results MSCs displayed extensive tropism for intracranial glioma. MSCs which were injected in the contralateral brain of the glioma scattered densely in the juncture between brain tissue and tumor and there were a few MSCs in the glioma; MSCs which were injected into the collateral internal carotid artery scattered widespread in the glioma and there were a few MSCs in the juncture area.Conclusions MSCs have the ability to migrating toward glioma and penetrating blood brain barrier. MSCs may be ideal gene therapy vehicles against glioma.
4.The effect of siRNA on inhibiting cyclooxygenase-2 gene expression in gastric adenocarcinoma cell
Tao WANG ; Chunsheng KANG ; Bangmao WANG ; Qingyu ZHANG
Chinese Journal of Internal Medicine 2008;47(2):129-132
objective To observe the cyclooxygenase-2(COX-2)expression and the cell proliferation and apoptosis of gastric adenocarcinoma cells after transiently transfecting gastric cancer cells using specific COX-2 small interfering RNA(siRNA)and discuss the role of COX-2 in gastric tumorigenesis and the effect of RNA interference(RNAi)as anti-cancer gene therapy.Methods Three groups were included in the study,i.e.a COX-2 siRNA group,a non-sense siRNA group and a control group.Gastric adenocarcinoma cells SGC7901 were cuhured at 37℃ in an atmosphere containing 5%CO2.72 hours after transfecting SGC7901 cells with specific COX-2 siRNA or non-sense siRNA,RT-PCR was used to detect COX-2 mRNA,immunohistochemistry and Western blot were taken to detect the expression of COX-2 protein and flow cytometry was taken to detect the cell cycle and apoptosis.MTT method was used to detect the proliferation and activity of the cells every day for one week after transfection.Results The expression of COX-2 mRNA and protein in the COX-2 siRNA group was obviously suppressed as compared with non-sense siRNA group and control group.No change was found between the non-sense siRNA group and the control group.The reduced expression of COX-2 could inhibit SGC7901 cells proliferation and induce cell apoptosis,but had no effect on cancer cell cycle.Conclusions The experimental results suggest that effectively inhibiting the expression of COX-2 can suppress the proliferation of gastric adenocarcinoma cell and promote the process of cancer cell apoptosis.so RNAi is a powerful tool of gene therapeutic method.
5.Effects of ZEB2 3′UTR Transfection on Proliferation, Invasion and Migration in Human Gastric Epithelial Cell GES-1
Suli LI ; Fang ZHOU ; Qingyu ZHANG ; Wenliang JIA ; Anling ZHANG ; Lei HAN ; Chunsheng KANG
Tianjin Medical Journal 2014;(5):401-405
Objective To explore the effects of zinc finger E-box binding protein (ZEB)2 3′UTR gene transfection on proliferation, invasion and migration in human gastric epithelial cell line GES-1. Methods The synthetic ZEB2 3′UTR and miR-200b micmics were transfected into GES-1 cell line by lipofectamine 2000. We set up control grop, the mutation group and ZEB2 3′UTR group. Real-time quantitative PCR was performed to evaluate the expression levels of miR-200a/b/c and ZEB1/ZEB2 mRNAs after transfection.And then we set up control group, ZEB2 3′UTR group, ZEB2 3′UTR+negative control group and ZEB2 3′UTR+miR-200b micmics group. The protein expression levels of ZEB1, ZEB2, matrix metallopro-teinases (MMP) 2/9 and proliferating cell nuclear antigen (PCNA) were detected by Western blot assay. The invasion and mi-gration capability were analyzed by transwell assay and wound healing test. MTT assay was used to detect the proliferation ability. Results Compared with control group and mutation group, the expressions of miR-200a/b/c were significantly de-creased, especially for miR-200b. And the expressions of ZEB1/ZEB2 were significantly increased at both mRNA and pro-tein levels after transfected with the ZEB2 3′UTR, enhancing the capability of migration,invasion,and proliferation (P <0.05). Compared with ZEB2 3′UTR group, the capabilities of proliferation,invasion and migration were significantly lower in combined group. Conclusion ZEB2 3′UTR can increase the ability of cell proliferation, invasion and metastasis through regulating the levels of miR-200a/b/c, and then influence the regulation of transcription of the target gene, which could lead to malignant transformation of GES-1 cells.
6.Evaluating mucosal injuries of low-volume PEG plus ascorbic acid regimen in bowel preparation
Zheng REN ; Desheng YANG ; Hongtao HOU ; Jinping SUN ; Yuhua KANG ; Chunsheng DING
China Journal of Endoscopy 2017;23(7):46-49
Objective To study the bowel-cleansing efficacy, patient security and mucosal injury of low-volume PEG plus ascorbic acid regimen. Methods Five hundred patients referred for colonoscopy were enrolled and randomly divided into two groups. Group A received low-volume PEG regimen, Group B received sodium phosphate (NaP) regimen for bowel preparation. Patients of the two groups drank solution 5 h before colonoscopies, serum creatinine and electrolyte were monitored at 5 h and 3 h before colonoscopies. The bowel-cleansing efficacy was rated during colonoscopy. All mucosal injuries observed during colonoscopy were biopsied and histopathologically reviewed. Results The patients of group A completed bowel preparation of 233 cases, completed colonoscopy 226 Cases, group B completed bowel preparation 238 cases, completed colonoscopy 210 cases. There was no significant difference in bowel cleansing between the groups (P > 0.05). Group A reported less incidence rate of the mucosal injuries than Group B. Group A reported better patient security than Group B at the same time. Conclusion Compared with sodium phosphate (NaP) regimen low-volume Polyethylene Glycol (PEG) plus ascorbic acid regimen exhibited equivalent bowel-cleansing efficacy and less incidence rate of the mucosal injuries and better patient security.
7.Inhibitory effects of adenovirus-mediated shRNA targeting Akt1 and COX-2 on invasion and metastasis of SGC-7901 cells
Jing ZHANG ; Yanchao FU ; Chunsheng KANG ; Qingyu ZHANG ; Tao WANG ; Jie ZHANG
Chinese Journal of General Surgery 2009;24(9):736-739
Objective To construct a short hairpin RNA (shRNA) adenovirus vector targeting Aktl (protein kinase B1, PKBI/Aktl) and cyclooxygenase-2 (COX-2) and study its effects on the invasion and metastasis of SGC-7901 human gastric adenocarcinoma cells. Methods Aktl and COX-2 shRNA expression frames were subcloned to pGSadeno adenovirus vector by homologous recombination technology to construct pGSadeno-Aktl+COX-2 (rAdS-A+C) vector. After screening and amplification, the recombinant adenovirus vector was digested with PacI and transfected into SGC-7901 cells, the titer and transfection efficiency were detected by fluorescent microscopy. Aktl and COX-2 mRNA and protein expression was identified by real-time PCR and Western blot. MMP-2 and MMP-9 contents in control group SGC-7901、rAd5-HK and treatment group rAdS-A+C were detected by ELISA assay and transwell assay analyzed cell invasion and metastasis ability. Results Adenovirus vector rAdS-A+C was successfully constructed and it dramatically down-regulated Aktl and COX-2 mRNA and protein expression in SGC-7901 gastric cancer cells. MMP-2 and MMP-9 contents in treatment group rAd5-A+C were respectively (39.7± 1.7) ng/ml, (31.3±3.6) ng/ml, and they were lower than those in control group SGC-7901 (278.4± 15.5) ng/ml, (225.4±15.1) ng/ml and rAd5-HK (275.5±2.1) ng/ml, (226.0±23.3) ng/ml (P= 0.01, P=0.021). Transwell assay showed treatment group rAd5-A+C significantly inhibited the invasion and metastasis of SGC-7901 gastric adenocacinoma cells. Conclusions Adenovirus-mediated targeting Aktl and COX-2 shRNA can inhibit the invasion and metastasis of SGC-7901 human gastric adenocarcinoma cells.
8.Knock-down of miR-221 and miR-222 in the radiosensitization of breast cancer cells
Chunzhi ZHANG ; Chunsheng KANG ; Yongzhen CAO ; Peiyu PU ; Zhonghong Lü ; Yue DU
Chinese Journal of Radiation Oncology 2009;18(5):419-422
cells, the expression of PTEN was up-regulated while pAkt down-regulated. Conclusions AS-miR-221 and AS-miR-222 may enhance the radiosensitivity of MCF-7 breast cancer cells by up-regulating the expression of PTEN.
9.Inhibitory effect of adenovirus-mediated short hairpin RNA targeting P85 and Akt1 on growth of human gastric adenocarcinoma cell
Jing ZHANG ; Yanchao FU ; Chunsheng KANG ; Qingyu ZHANG ; Tao WANG ; Jie ZHANG
Chinese Journal of Internal Medicine 2009;48(7):557-561
Objective To construct a short hairpin RNA (shRNA) adenovirus vector targeting P85 and protein kinase B1 (PKB1/Akt1) and study its effects on the growth of SGC-7901 human gastric adenocareinoma cells. Methods P85 and Aktl shRNA expression frames were subcloned to pGSadeno adenovirus vector with homologous recombination technology to construct pGSadeno-P85 + Akt1 (rAd5-P + A) vector. After screening and amplification, the recombinant adenovirus vector was digested with PacI and transfected into SGC-7901 cells and then its titer and transfection efficiency were detected with fluorescent microscope. P85 and Akt1 mRNA protein expression was identified with real-time PCR and Western blot. The proliferative activity of tumor cells was evaluated with MTr assay and flow cytometry in vitro, rAd5-HK and rAd5-P + A mediated by adenovirus were injected into the established subcutancous SGC-7901 gastric adenocarcinoma in nude mice. During the observation period of 21 days, tumor volume was measured every 3 days to further testify the anti-tumor effect of rAd5-P + A on the SGC-7901 gastric adenocarcinoma cells and cell in situ apoptosis was detected with TUNEL assay. Results The adenovirus vector rAd5-P + A was successfully constructed and it dramatically downregulated P85 and Akt1 mRNA expression in SGC-7901 gastric adenocarcinoma cells. Compared with a control group of SGC-7901 cells and cells transfected with general adenovirus rAd5-HK as control, P85 and Akt1 protein expression 48 h and 72 h after rAd5-P + A transfection was decreased by 57.5% and 63. 7%, 67. 8% and 75.6% with statistical significance(P = 0. 005, P = 0. 003). Cell proliferative activity in rAd5-P + A transfected cells was suppressed from the second day (P <0. 001) and the decreased P85 and Akt1 expression was accompanied by 5.9% -7. 1% decrease of S phase fraction and 12. 1% - 13.7% increase of G0/G1 phase. The tumor volume of rAd5-P + A treated group was smaller than that of the control and rAd.5-HK group with statistical significance (F = 9. 871, P = 0. 025) . Moreover, rAd5-P + A could induce cell in situ apoptosis. Conclusions Adenovirus-mediated targeting P85 and Akt1 shRNA can inhibit the growth of SGC-7901 human gastric adenocarcinoma cells and this may provide a new strategy of combination gene therapy in gastric adenocarcinoma.
10.The relationship of MMP-9, VEGF and PCNA expressions and their clinical significance in gastric adenocarcinoma
Fengjuan ZHAO ; Chunsheng KANG ; Xiaowei CUI ; Xiaomei SONG ; Jian LIU ; Qingyu ZHANG
Chinese Journal of Internal Medicine 2009;48(2):114-117
Objective To investigate abnormal protein expression of matrix metalloproteinase-9 (MMP-9), vascular endothelial growth factor (VEGF) and proliferating cell nuclear antigen (PCNA) in human gastric adenoearcinoma, and further reveal the clinical significance. Method The MMP-9, VEGF and PCNA proteins expression was determined by immunohistochemistry staining in 45 gastric adenocarcinoma tissues, 45 adjacent specimens and 10 normal gastric mucosa tissues via tissue arrays accordingly. The relationship of these protein expression with differentiation degree, development and progression of gastric adenocarcinoma were also analyzed. Results Positive rates of MMP-9, VEGF and PCNA in gastric adenocarcinoma, adjacent specimens and gastric normal mucosa were as follows: MMP-9, 82.2%(37/45), 64.4% (29/45), 30.0% (3/10) (P=0.019); VEGF, 73.3% (33/45), 62.2% (28/45), 30. 0% (3/10) (P=0.029); PCNA,84.4% (38/45), 71.1% (32/45), 10.0% (1/10) ,there were statistically significant difference (P = 0. 001). The positive rates of MMP-9, VEGF and PCNA in well-differentiated adenocarcinoma, moderately differentiated adenocarcinoma and poorly differentiated adenocarcinoma were as follows: MMP-9,70.0%(7/10), 80. 0% (8/10), 88.0%(22/25), there were statistically significant difference (P=0.015);VEGF, 50.0%(5/10), 60.0% (6/10), 88.0% (22/25), there were statistically significant difference (P =0.000);PCNA, 60.0% (6/10) ,90.0% (9/10) ,92.0% (23/25) ,the difference is significant statistically (P = 0.004). The expression of MMP-9, VEGF and PCNA showed positive relationship with each other by rank correlation analysis (P < 0. 05). Conclusion Tissue arrays technology is effective tool to analyze the expression of cancer related proteins in gastric adenocarcinoma. The expression of MMP-9, VEGF and PCNA proteins participates in the tumorigenesis and development process of gastric adenocarcinoma, and these can be used as indexes to evaluate prognosis in clinical.