1.Mechanisms of immune suppression mediated by myeloid derived suppressor cells and the targeted therapy strategy
Lanlan WEN ; Quanli GAO ; Ling MAI
Journal of International Oncology 2012;(12):898-902
Myeloid-derived suppressor cells (MDSCs) are a heterogeneous population of immature myeloid cells at different stages of maturation.MDSCs mediate the suppression of the anti-tumor immunity,and play a crucial role in cancer tolerance through suppressing the activity of T cells and natural killer cells,inducing T-regs and involving the angiogenesis,and then contribute to the tumor development and metastasis.Promoting the differentiation of MDSCs,reducing its quantity and inhibiting its function by using various methods may contribute to the recovery of patients normal immune status,the tumor progression control,and improvement of the efficacy of other anti-neoplastic therapies.Therefore,possible novel therapeutic approaches targeted at MDSCs could be considered and developed rapidly now.
2.Effect of Consciousness-restoring Obstruction-clearing Needing Technique Combined with Swallowing Function Training on Dysphagia after Stroke
Lanlan LIU ; Guoqiang WEN ; Feng OUYANG ; Yidong DENG
Chinese Journal of Rehabilitation Theory and Practice 2007;13(10):963-964
Objective To observe the effect of consciousness-restoring obstruction-clearing needing technique combined with swallowing function training on pseudobulbar paralysis after stroke.Methods 80 stroke patients with pseudobulbar paralysis were randomly divided into the trial group and control group with 40 cases in each group.The patients of the trial group were treated with consciousness-restoring obstruction-clearing needing technique combined with swallowing function training and routine medicine,those of the control group were treated only with routine medicine.Results After treatment,the whole effective rate of the trial group was 92.5%,that of the control group was 60.0%,there was a significant difference between two groups(P<0.05).Conclusion The therapeutic effect of consciousness-restoring obstruction-clearing needing technique combined with swallowing function training and routine medicine on pscudobulbar paralysis after stroke is superior to simply routine medicine.
3.Research on relationships between enterprising and magnanimous psychological characteristics and coping modes in cancer patients
Lanlan WU ; Xuewei HUANG ; Lei CHEN ; Wen LI ; Xicheng WANG ; Meng XU
Chinese Journal of Behavioral Medicine and Brain Science 2015;24(2):149-151
Objective To explore the relationship between enterprising and magnanimous psychological characteristics and coping modes in cancer patients.Methods Totally 450 cancer patients were randomly chosen to analyze the correlation using enterprising and magnanimous questionnaires and cancer coping modes questionnaires.T-test,Variance analysis and Pearson analysis were employed for statisticals.Results (1) The enterprising and magnanimous psychological characteristics:cancer patients generally got lower scores in the dimensions of enterprising,magnanimous,and total score (59.30±8.09,31.98±6.24,27.32±4.02,respectively) than healthy population (67.44±5.60,34.72±4.57,32.72±3.23,respectively).In demographic level,male and female cancer patients' scores were also lower than the healthy ones'.The higher academic backgrounds they had,the better enterprising and magnanimous psychological attitudes they embraced.In the comparison of occupation,professionals in administrative and companies scored the highest in the dimensions of enterprising,workers in special techniques,commercial and service industries scored higher in the dimensions of magnanimous.All the differences were significant statistically (P<0.05).(2) Correlation analysis:the correlation index between psychological characteristics of enterprising and magnanimous and the coping modes in cancer patients was 0.463,with a positive correlation(P<0.01),and the indexes among in the dimensions of enterprising and confrontation were regarded as a positive correlation (r=0.415),and negative correlations (r =-0.139,r =-0.047,respectively) with avoidance and suppression and resignation (P<0.01).Conclusion The enterprising and magnanimous mental level of cancer patients is lower,which is related to their inappropriate responses of avoidance and suppression and resignation.
4.Case report of congenital glucose-galactose malabsorption in China and literature review
Li TAO ; Ling WANG ; Xiaowen CHEN ; Ning ZHAO ; Lanlan GENG ; Jianfeng LIN ; Yan WEN ; Wei ZHOU
Chinese Journal of Neonatology 2017;32(2):123-127
Objective To study the clinical features of congenital glucose-galactose malabsorption (CGGM),and to improve the understanding of CGGM.Method Clinical manifestations and treatment process of one patient with CGGM in our hospital were retrospectively analyzed.From 1966 to 2016 May,Chinese medical database and PUBMED were searched using Malabsorption syndrome,dehydration,hypernatremia , diarrhea , newborn , carbohydrate metabolism ,andglucose/galactose malabsorption as key words.The clinical features of CGGM reported in literatures were summarized.Result The patient in our hospital was a full-term female infant naturally delivered.The onset of the disease was on the 9th day after birth,and the clinical manifestations included severe diarrhea,severe dehydration,hypernatremia,metabolic acidosis and malnutrition.After intravenous infusion and symptomatic treatment,dehydration,hypernatremia and metabolic acidosis were corrected.However,there was no improvement of diarrhea characterized with watery and acidic stools,and neither was weight gain.Glucose loading test was negative,and fructose loading test was positive.Diarrhea was improved markedly using diagnostic carbohydrate-free formula,so CGGM was diagnosed clinically.SLC5A1 homozygous IVS7-2 A > G mutation was detected which confirmed the diagnosis of CGGM.With carbohydrate-free formula feeding,the body weight of the infant was increased.Followed up for 2 months now,her body length and body weight were at P25 and P22 on growth curve respectively,and no obvious neurological sequela was observed.Our literature review revealed 7 reports including 48 cases of CGGM children.Literature review showed that:most children with CGGM (79.2%) had the onset within 7 days of life;main clinical features included diarrhea (100%),dehydration (100%),and malnutrition (54.2%);22.9% of patients with carbohydrate-free formula and 27.1% with fructose matrix formula were fed well;no death was detected,77.1% had normal weight gain,and 91.7% had normal development of the nervous system.Conclusion CGGM is rare.The symptoms include severe watery and acidic stools with onset during neonatal period.CGGM is associated with severe complications such as hypertonic dehydration and hypernatremia.The diagnosis is established based upon typical clinical manifestations,sugar loading test and SLC5A1 gene detection.Carbohydrate-free formula feeding is effective.
5.Research advances in the biomarkers for the early diagnosis of hepatorenal syndrome
Lanlan CHEN ; Wen HAN ; Jingjing LIU
Journal of Clinical Hepatology 2018;34(11):2448-2452
Hepatorenal syndrome (HRS) is one of the most serious complications of end-stage liver disease. Type Ⅰ/Ⅱ HRS has a high short-term mortality rate and poor prognosis. The diagnostic criteria for HRS based on serum creatinine cannot keep up with the world, and early diagnosis is of great importance to the treatment and prognosis of HRS. This article introduces the value and clinical significance of seven biomarkers for renal injury in the early diagnosis, differential diagnosis, and prognostic evaluation of HRS. It is pointed out that neutrophil gelatinase-associated lipocalin, interleukin-18, and kidney injury molecule-1 may be the biomarkers for early identification of renal injury in patients with liver cirrhosis. A combination of multiple biological indicators, imaging examination, and interventional techniques might be a feasible method for early diagnosis of HRS in future.
6.Study of a family with epidermolysis bullosa simplex resulting from a novel mutation of KRT14 gene.
Lanlan MENG ; Juan DU ; Wen LI ; Guangxiu LU ; Yueqiu TAN
Chinese Journal of Medical Genetics 2017;34(4):504-508
OBJECTIVETo determine the molecular etiology for a Chinese pedigree affected with epidermolysis bullosa simplex (EBS).
METHODSTarget region sequencing using a hereditary epidermolysis bullosa capture array combined with Sanger sequencing and bioinformatics analysis were used. Mutation taster, PolyPhen-2, Provean, and SIFT software and NCBI online were employed to assess the pathogenicity and conservation of detected mutations. One hundred healthy unrelated individuals were used as controls.
RESULTSTarget region sequencing showed that the proband has carried a unreported heterozygous c.1234A>G (p.Ile412Val) mutation of the KRT14 gene, which was confirmed by Sanger sequencing in other 8 affected individuals but not among healthy members of the pedigree. Bioinformatics analysis indicated that the mutation is highly pathogenic. Remarkably, 3 members of the family (2 affected and 1 unaffected) have carried a heterozygous c.1237G>A (p.Ala413Thr) mutation of the KRT14 gene, which was collected in Human Gene Mutation Database (HGMD). Bioinformatics analysis indicated that the mutation may not be pathogenic. Both mutations were not detected among the 100 healthy controls.
CONCLUSIONThe novel c.1234A>G(p.Ile412Val) mutation of the KRT14 gene is probably responsible for the disease, while c.1237G>A (p.Ala413Thr) mutation of KRT14 gene may be a polymorphism. Compared with Sanger sequencing, target region capture sequencing is more efficient and can significantly reduce the cost of genetic testing for EBS.
Adult ; Amino Acid Sequence ; Case-Control Studies ; Epidermolysis Bullosa Simplex ; genetics ; Female ; Humans ; Keratin-14 ; genetics ; Male ; Mutation ; genetics ; Pedigree ; Young Adult
7.Effect of down-regulation of lncRNA LINC00263 targeting miR-4458 on regulating radiosensitivity of breast cancer SK-BR-3 cells
Lanlan WEN ; Dongjuan WANG ; Hui DONG ; Jiwei ZHAO ; Cuimin ZHU ; Pingping LIN ; Lanfang LIU ; Qingshan LI
Chinese Journal of Radiation Oncology 2021;30(11):1195-1201
Objective:To evaluate the effect of down-regulating lncRNA LINC00263 targeting miR-4458 on the proliferation, migration, invasion and radiosensitivity of breast cancer SK-BR-3 cells.Methods:The expression differences of LINC00263 in breast cancer tissues, adjacent tissues, normal breast epithelial cells and breast cancer cells were determined by qRT-PCR. Transfection of LINC00263 shRNA in breast cancer SK-BR-3 cells down-regulated the expression of LINC00263, and the cloning experiment was used to detect the radiosensitivity. Breast cancer SK-BR-3 cells were treated with 6 Gy irradiation. CCK-8 assay was employed to detect cell proliferation. Flow cytometry was adopted to detect cell apoptosis. Transwell chamber test was performed to detect cell migration and invasion. Western blot was used to detect the expression levels of C-Caspase-3 and C-Caspase-9, MMP-2 and MMP-9 proteins. Bioinformatics software predicted that LINC00263 and miR-4458 had complementary binding sites, and the luciferase reporter system was utilized determine the targeting relationship between LINC00263 and miR-4458. LINC00263 shRNA and miR-4458 inhibitor were co-transfected into breast cancer SK-BR-3 cells, and 6 Gy irradiation was given to detect the changes in cell proliferation, apoptosis, invasion and migration.Results:The expression level of LINC00263 in breast cancer tissues was higher than that in adjacent tissues. The expression level of LINC00263 in breast cancer cells was higher compared with that in normal breast epithelial cells. The radiosensitivity of breast cancer SK-BR-3 cells was increased after transfection of LINC00263 shRNA. Transfection of LINC00263 shRNA and radiation exerted a synergistic effect, jointly inhibited breast cancer cell proliferation, migration and invasion, promoted cell apoptosis, up-regulated the expression levels of C-Caspase-3 and C-Caspase-9 proteins in cells, and down-regulated those of MMP-2 and MMP-9 proteins. Down-regulation of LINC00263 targetedly up-regulated miR-4458 expression. miR-4458 inhibitor reversed the inhibitory effect of LINC00263 shRNA combined with radiation on the proliferation, migration, invasion and apoptosis promotion of breast cancer SK-BR-3 cells.Conclusion:Down-regulating lncRNA LINC00263 targeting miR-4458 inhibits the proliferation, migration and invasion of breast cancer SK-BR-3 cells, and improves cell radiosensitivity.