1.BMP9 down-regulates HIF-1α to inhibit aerobic glycolysis,migration and invasion of breast cancer MDA-MB-231 cells
Tao YU ; Yuan-Xiang CHEN ; Shi-Yan LIU ; Huo-Mei YU ; De-Yu LIAO ; Shi-Yu YANG ; Tao ZENG ; Lan WEI ; Yan ZHANG
Chinese Pharmacological Bulletin 2024;40(5):840-846
Aim To investigate the effects of bone-forming protein BMP9 on aerobic glycolysis,migration and invasion ability in triple-negative breast cancer MDA-MB-231 cells and the underlying mechanisms.Methods The experimental group infected MDA-MB-231 cells with human BMP9 recombinant adenovirus(AdBMP9),while the control group infected cells with empty GFP adenovirus.Lactate,glucose and ATP as-say kits were used to detect glucose uptake,lactate and ATP production.The correlation between BMP9 and key glycolytic enzyme genes in pancarcinoma was ana-lyzed using GEPIA2 database.The mRNA expression levels of GLUT1,HK2,PKM2 and LDHA in MDA-MB-231 cells after overexpression of BMP9 were detec-ted by qRT-PCR.Potential targets of BMP9 inhibiting MDA-MB-231 aerobic glycolysis were analyzed in STRING database.The expression levels of HIF-1αand downstream protein were detected by Western blot.The changes of cell migration and invasion ability after different treatments were evaluated by the scratch heal-ing assay and Transwell assay.Results Compared with the control group,BMP9 down-regulated glucose uptake,lactate production,ATP level(P<0.01),and inhibited HIF-1α and its downstream protein ex-pression in MDA-MB-231 cells.Overexpression of HIF-1α in rescue experiment reversed the inhibitory effect of BMP9 on aerobic glycolysis,migration and in-vasion of MDA-MB-231 breast cancer cells.Conclu-sion BMP9 down-regulates HIF-1α to inhibit the aer-obic glycolysis and migration and invasion ability of MDA-MB-231 breast cancer cells.
2.SNHG3-mediated autophagy promotes proliferation,migration and invasion of breast cancer cells
Yuan-Xiang CHEN ; Huo-Mei YU ; Shi-Yan LIU ; De-Yu LIAO ; Tao YU ; Shi-Yu YANG ; Tao ZENG ; Yan ZHANG
Chinese Pharmacological Bulletin 2024;40(6):1097-1104
Aim To investigate the effects of autophagy regula-ted by LncRNA SNHG3 on the proliferation,migration,invasion and EMT of human breast cancer cell line MCF-7.Methods The expression of SNHG3 in breast cancer and breast cancer cell line MCF-7 was analyzed by bioinformatics and real-time fluores-cent quantitative PCR(RT-qPCR);RNAi technology was used to construct MCF-7 recombinant cell lines with knockdown SNHG3(siSNHG3)and control(siNC),and Western blot and cellular immunofluorescence were applied to detect autophagy markers;autophagosome lysosomal fusion inhibitor BafA1 or ear-ly autophagosome formation inhibitor 3-MA was employed to treat MCF-7 cells with or without SNHG3 knockdown,Western blot was used to detect the expression of LC3-Ⅱ or p62,and the effect on autophagic vesicle formation or autophagic degradation was observed;clone formation experiment,CCK8 experiment,wound healing experiment,and Transwell experiment were used to detect the effects of siSNHG3 combined or not combined with BafA1 or 3-MA on the proliferation,lateral migration,longitudi-nal migration,and invasion of MCF-7 cells.Western blot was used to detect its effect on the EMT of MCF-7 cells.Results Bioinformatics analysis and RT-qPCR confirmed that SNHG3 was highly expressed in breast cancer and breast cancer cell line MCF-7;Western blot and cellular immunofluorescence confirmed that knockdown of SNHG3 could activate autophagy in breast cancer;the clone formation,CCK-8,wound healing,and Tran-swell experiment confirmed that downregulation of SNHG3 ex-pression could inhibit tumor proliferation,migration,and inva-sion by activating autophagy;Western blot confirmed that SNHG3 promoted EMT process of breast cancer through negative regulation of autophagy.Conclusions SNHG3 is abnormally overexpressed in breast cancer and negatively regulates autoph-agy,and can enhance the proliferation,migration,invasion and EMT process of breast cancer cells through negatively regulating autophagy,suggesting that SNHG3 is a potential target for diag-nosis and treatment of breast cancer.
3. Effects of miR-619-5p on proliferation, migration and invasion of human breast cancer cells
Shi-Yan LIU ; De-Yu LIAO ; Kai HU ; Huo-Mei YU ; Tao YU ; Yuan-Xiang CHEN ; Yan ZHANG
Chinese Pharmacological Bulletin 2023;39(10):1859-1866
Aim To investigate the involvement and mechanism of miR-619-5p in the proliferation, migration and invasion of human breast cancer cells. Methods The expression of miR-619-5p in breast cancer and normal breast tissue and cells was detected using bioinformatic analysis or qRT-PCR. After transfection with miR-619-5p mimics or inhibitors, the expression of miR-619-5p and EMT-related molecule mRNA was determined by qRT-PCR. Cell proliferation was detected using CCK-8 assay; cell migration and invasion capacity was estimated by the wound healing assay and Transwell assay. The protein levels of EMT-related molecules were analyzed by Western blot. The target genes of miR-619-5p were analyzed by bioinformatic a-nalysis, and a preliminary analysis of the potential target gene CREB1 was carried out. Results miR-619-5p was low expressed in breast cancer tissues and breast cancer cells. Compared with the control group, over-expression of miR-619-5p resulted in up-regula-tion of miR-619-5p expression levels and EMT epithelial markers, down-regulation of pro-EMT molecules and mesenchymal markers, impairment of cell proliferation, migration and invasion, and down-regulation of CREB1 expression. The results of the low miR-619-5p expression group were opposite to the above results. Conclusions In breast cancer tissue and cells, miR-619-5p expression is lower. miR-619-5p inhibits the proliferation, migration, invasion and EMT of breast cancer cells, and its possible mechanism of the effects may be targeting CREB1.
4. EHD2 Affects the Proliferation of Esophageal Squamous Cell Carcinoma by Regulating the Cyclin Dl-CDK4-pRb Signaling Axis
Zhi-Da ZHANG ; Dan-Xia DENG ; Bing WEN ; Liu PENG ; Ke DONG ; De-Yuan PAN ; Lian-Di LIAO ; Li-Yan XU ; En-Min LI ; Hai-Xiang ZHENG ; Li-Yan XU ; De-Yuan PAN ; Li-Yan XU
Chinese Journal of Biochemistry and Molecular Biology 2022;38(9):1174-1192
Actin-binding proteins (ABPs) are important components of the F-actin cytoskeleton and affect the dynamics of F-actin by promoting the polymerization and depolymerization of actin. Numerous studies have shown that F-actin and actin-binding proteins are involved in all stages of carcinogenesis. Our analysis of esophageal carcinoma proteomic data showed that the actin-binding protein EHD2 (E p s l 5 homology domain-containing protein 2) is expressed at low levels in esophageal squamous cell carcinoma tissues and patients with lower EHD2 expression had poorer prognosis. Previous studies have revealed that EHD2 is involved in the regulation of glucose metabolism, autophagy and tumor cell migration. However, the role and mechanism of EHD2 in esophageal squamous cell carcinoma progression remain unclear. This study aimed to explore the effect of EHD2 on the proliferation of esophageal squamous cell carcinoma. Immunofluorescence and cell fractionation analysis showed that EHD2 was not only localized in the cell membrane and cytoplasm, but also in the nucleus. Colony formation, EdU labeling and flow cytometry were used to determine the effect of EHD2 on the proliferation of esophageal squamous cell carcinoma. The results showed that overexpression of EHD2 and EHD2-3×NLS (nuclear localization signal) inhibited proliferation, cell cycle G
5.Secondary metabolites of petri-dish cultured Antrodia camphorata and their hepatoprotective activities against alcohol-induced liver injury in mice.
Yu WU ; Wen-Jing TIAN ; Shuo GAO ; Zu-Jian LIAO ; Guang-Hui WANG ; Jir-Mehng LO ; Pei-Hsin LIN ; De-Quan ZENG ; Da-Ren QIU ; Xiang-Zhong LIU ; Mi ZHOU ; Ting LIN ; Hai-Feng CHEN
Chinese Journal of Natural Medicines (English Ed.) 2019;17(1):33-42
Antrodia camphorata, a well-known and highly valued edible medicinal mushroom with intriguing activities like liver protection, has been traditionally used for the treatment of alcoholic liver disease. A. camphorata shows highly medicinal and commercial values with the demand far exceeds the available supply. Thus, the petri-dish cultured A. camphorata (PDCA) is expected to develope as a substitute. In this paper, nineteen triterpenes were isolated from PDCA, and thirteen of them were the unique anthroic acids in A. camphorata, including the main content antcin K, which suggested that PDCA produced a large array of the same anthroic acids as the wild one. Furthermore, no obvious acute toxicity was found suggesting the edible safety of PDCA. In mice alcohol-induced liver injury model, triglyceride (TG), aspartate aminotransferase (AST), alanine aminotransferase (ALT), and malondialdehyde (MDA) had been reduced by the PDCA powder as well as the main content antcin K, which indicated that the PDCA could protect alcoholic liver injury in mice model and antcin K could be the effective component responsible for the hepatoprotective activities of PDCA against alcoholic liver diseases.
Alanine Transaminase
;
blood
;
Aldehyde Dehydrogenase
;
blood
;
Animals
;
Antrodia
;
chemistry
;
Aspartate Aminotransferases
;
blood
;
Biological Products
;
chemistry
;
pharmacology
;
therapeutic use
;
Chemical and Drug Induced Liver Injury
;
etiology
;
prevention & control
;
Cholestenes
;
chemistry
;
pharmacology
;
therapeutic use
;
Cholesterol, VLDL
;
blood
;
Disease Models, Animal
;
Ethanol
;
toxicity
;
Female
;
Fruiting Bodies, Fungal
;
chemistry
;
Liver
;
drug effects
;
metabolism
;
pathology
;
Liver Diseases, Alcoholic
;
prevention & control
;
Male
;
Malondialdehyde
;
blood
;
Mice
;
Molecular Structure
;
Triglycerides
;
blood
;
Triterpenes
;
chemistry
;
pharmacology
;
therapeutic use
6.Factors Associated with Development of Vitiligo in Patients with Halo Nevus.
Hui ZHOU ; Liang-Cai WU ; Mu-Kai CHEN ; Qi-Man LIAO ; Ren-Xiang MAO ; Jian-De HAN
Chinese Medical Journal 2017;130(22):2703-2708
BACKGROUNDHalo nevus (HN) has been shown to be associated with vitiligo, but no standard signs are currently available to identify HN patients at risk of vitiligo, and the relevant data obtained in previous studies are somewhat conflicting. This study aimed to identify factors affecting the presence of vitiligo in HN patients.
METHODSWe performed a retrospective study on consecutive patients with HN at the First Affiliated Hospital of Sun Yat-sen University between January 2011 and December 2016. Detailed demographic and clinical data were collected to identify the factors associated with the presence of vitiligo in this cohort of patients using uni- and multi-variate logistic regression analyses.
RESULTSA total of 212 HN patients were included, 101 of whom had vitiligo-associated HN (HNV). Univariate analysis indicated that a personal history of thyroid diseases was positively associated with HNV (odds ratio [OR] = 10.761, P = 0.025), while the onset age of HN was negatively associated with HNV (OR = 0.537, P = 0.026). Multivariate analysis demonstrated that the Koebner phenomenon (KP; OR = 10.632, P < 0.0001), multiple HN (OR = 3.918, P < 0.0001), and a familial history of vitiligo (OR = 3.222, P = 0.014) were independent factors associated with HNV.
CONCLUSIONSHN without vitiligo has clinical features distinct from HN associated with vitiligo. HN patients with KP, multiple lesions, or familial history of vitiligo are more likely to develop vitiligo and therefore should be monitored for clinical signs of such accompanied conditions.
7.Association of preoperative serum IGF- I concentration with clinicopathological parameters in patients with non-small cell lung cancer.
Sheng-ling FU ; He-xiao TANG ; Yong-de LIAO ; Wen-yang JIANG ; Qin-zi XU ; Yu DENG ; Xiang-ning FU
Journal of Huazhong University of Science and Technology (Medical Sciences) 2013;33(2):224-227
Insulin-like growth factor-I (IGF-I) is a mitogenic and anti-apoptotic factor. Serum IGF-I concentration is related to some cancer risk and tumor progression. The aim of this research was to study the association of preoperative serum IGF-I concentration with clinicopathological parameters and prognosis of non-small cell lung cancer (NSCLC). Preoperative serum IGF-I concentration was measured in 80 consecutive patients with NSCLC who underwent radical lung cancer resection, and 45 patients with benign pulmonary lesion (BPL) by using enzyme linked immunosorbent assay (ELISA). The results showed that the serum IGF-I concentration was elevated and correlated with clinicopathological parameters and overall survival (OS) in NSCLC patients. Serum IGF-I concentration was significantly higher in patients with NSCLC than in those with BPL. The IGF-I concentrations were significantly higher in NSCLC patients with ≥T2, N1-3, and in IIIA-IV but not in those with
9.Isolation and Characterization of a New High Efficient H2-producing Bacterium Enterococcus sp. LG1
Yu-Liang LI ; Xiao-Ming LI ; Liang GUO ; Yi ZHOU ; Guang-Ming ZENG ; Qi YANG ; De-Xiang LIAO ;
Microbiology 2008;0(09):-
12 strains of H2-producing bacteria were isolated and purified from anaerobic sludge, aerobic sludge and river bottom sludge by Hungate method. A new species of high efficient hydrogen production bacterium Enterococcus sp. LG1 (registration number: EU258743 ) was studied deeply. It was showed that the Enterococcus sp. LG1 was an anaerobic and Gram-negative bacterium. Sequence analysis of this type of clones showed that it was affiliated with the genus Enterococcus and it was not reported yet in other paper at present. Meanwhile, batch tests of anaerobic fermentative hydrogen production by Enterococcus sp. LG1 were investigated by using sterilization pretreated sludge as substrate. The changes of soluble COD, protein, carbohydrate and pH value during hydrogen fermentation were monitored. It was found that only hydrogen and carbon dioxide were produced by this strain and no methane was detected during fermentation. The maximal hydrogen yield was 36.48 mL/g TCOD and the hydrogen concentration in the gas phase was 73.5%. The Enterococcus sp. LG1 was a butyrate fermentation bacteria analyzed by metabolites.
10.Screening and characterization of a bioflocculant produced by Aeromonas sp.
Xiao-Ming LI ; Qi YANG ; Kai HUANG ; Guang-Ming ZENG ; De-Xiang LIAO ; Jin-Jing LIU ; Wen-Fang LONG
Biomedical and Environmental Sciences 2007;20(4):274-278
OBJECTIVETo isolate the bioflocculant-producing bacteria from activated sludge and investigate the flocculating characteristics of the newly isolated bioflocculant.
METHODSBacteria were screened from activated sludge samples to isolate bioflocculant-producing bacteria. Flocculating activity was used as a measure of the flocculating capability of the bioflocculant.
RESULTSA novel bioflocculant-producing bacterium was isolated, which was identified to belong to genus Aeromonas and named as Aeromonas sp. N11. Flocculating activity increased in the presence of K+, Na+, or Ca2+. The highest flocculating activities for kaolin suspension were obtained in acidic pH ranges, and optimum pHs for it were 3.0, 4.0, and 5.0 with 1 mmol/L K+, Ca+, and Na+ present, respectively. The highest flocculating activities for soil suspension were observed at pH 8.0. The bioflocculant had a good flocculating activity and could achieve a flocculating activity of 92.4% for kaolin suspension at a dosage of only 1 mgxL(-1), and its activity in kaolin suspension was decreased by only 9.2% after heating at 100 degrees C for 60 min.
CONCLUSIONThe bioflocculant produced by Aeromonas sp. N11 has strong flocculating activity and high stability, which affords high possibility of its practical use.
Aeromonas ; metabolism ; Culture Media ; Flocculation ; Hydrogen-Ion Concentration ; Kaolin

Result Analysis
Print
Save
E-mail