OBJECTIVETo study the radiation-sensitizing effect of up-regulating p27(kip1) expression by knocking down miR-221/222 in the U251 human glioblastoma cell line.

METHODSBy bioinformatic analysis, we searched the miRNA-221/222 sequence and found the relationship between p27(kip1) and miRNA-221/222. miRNA-221/222 antisense oligonucleotides were transfected into U251 human glioblastoma cells. Northern blot analysis was conducted to detect the expression of miR-221/222 in control, scrambled oligonucleotide (ODN) transfected and anti-mi-221/222ODNs transfected cell groups. The cell cycle kinetics was detected by flow cytometry. Clonogenic assay was used to measure the mitotic cell death and p27(kip1) expression was examined by Western blot analysis.

RESULTSBased on bioinformatic analysis, we found that the seed sequences of miR-221 and miR-222 coincide with each other, and p27(kip1) is a target for miRNA-221/222. The expression level of miR-221/222 was significantly knocked down in cells transfected with antimiR-221/222 as compared to the parental cells or cells transfected with scrambled ODN. Cell cycle was arrested in G0 or G1 phase in the anti-miR-221/222 group. When combined with irradiation, S phase fraction in the anti-miR-221/222 cell group is lower than that in the other two control groups. Anti-miR-221/222 combined with irradiation could synergistically enhance mitotic cell death. The expression of p27(kip1) was up regulated in the anti-miR-221/222 group revealed by Western blot analysis.

CONCLUSIONAnti-miR-221/222 may enhance the radiosensitivity of U251 human glioblastoma through upregulation of p27(kip1).

Base Sequence ; Cell Cycle ; radiation effects ; Cell Line, Tumor ; Cyclin-Dependent Kinase Inhibitor p27 ; genetics ; metabolism ; Glioblastoma ; genetics ; metabolism ; Humans ; MicroRNAs ; genetics ; metabolism ; Molecular Sequence Data ; Oligonucleotides, Antisense ; genetics ; metabolism ; Radiation Tolerance ; Sequence Alignment ; Up-Regulation ; radiation effects ; X-Rays

Objective: To investigate the effects of hepatitis B virus (HBV) genotype and mutations on the development of hepatocellular carcinoma (HCC) and to establish a new qualified HCC risk scores. Methods: A cohort study enrolling patients with chronic HBV infection was conducted. HBV genotypes were identified by nested multiplex PCR. HBV mutations in the basic core promoter region and PreS region were sequenced after PCR amplification. Scores on risk factors were set based on nomogram. Results: Totally, 1 525 patients were followed-up in this research. A total of 1 110 patients infected with genotype C were followed-up for 8.52 (Q(R): 5.36-11.68) years on average, of whom the incidence of HCC was 11.93/1 000 person-years. In genotype C HBV infected patients, male gender, aged 40 years and over, and four DNA mutations (T1674CG, A1762T/G1764A, A3120T, and A2962G) can increase the risk of HCC (P<0.05); interferon therapy can reduce the risk of HCC (P<0.05). A new HCC predicting model was established according to the results. After validation, the predicted disease-free survival rate was consistent with the real one. Conclusions: Hepatitis B virus genotypes and mutations were closely associated with HCC. The new risk scoring system can well predict HCC occurrence in genotype C HBV infected patients.
Adult ; Aged ; Carcinoma, Hepatocellular/virology* ; China/epidemiology* ; Cohort Studies ; DNA, Viral/genetics* ; Female ; Genotype ; Hepatitis B virus/genetics* ; Hepatitis B, Chronic/complications* ; Humans ; Liver Neoplasms/virology* ; Male ; Middle Aged ; Mutation ; Predictive Value of Tests ; Risk Factors ; Sensitivity and Specificity

OBJECTIVE: To evaluate the effectiveness of tendon insertion medialized repair in treatment of large-to-massive rotator cuff tears (L/MRCT). METHODS: The clinical and imaging data of 46 L/MRCT patients who underwent arthroscopic insertion medialized repair between October 2015 and June 2019 were retrospectively analyzed. There were 26 males and 20 females with an average age of 57.7 years (range, 40-75 years). There were 20 cases of large rotator cuff tears and 26 cases of massive rotator cuff tears. Preoperative imaging evaluation included fatty infiltration (Goutallier grade), tendon retraction (modified Patte grade), supraspinatus tangent sign, acromiohumeral distance (AHD), and postoperative medializaiton length and tendon integrity. The clinical outcome was evaluated by visual analogue scale (VAS) score, American Society for Shoulder and Elbow Surgery (ASES) score, shoulder range of motion (including anteflexion and elevation, lateral external, and internal rotation) and anteflexion and elevation muscle strength before and after operation. The patients were divided into two groups (the intact tendon group and the re-teared group) according to the integrity of the tendon after operation. According to the medializaiton length, the patients were divided into group A (medialization length ≤10 mm) and group B (medialization length >10 mm). The clinical function and imaging indexes of the patients were compared. RESULTS: All patients were followed up 24-56 months, with an average of 31.8 months. At 1 year after operation, MRI showed that the medializaiton length of supraspinatus tendon was 5-15 mm, with an average of 10.26 mm, 33 cases in group A and 13 cases in group B. Eleven cases (23.91%) had re-teared, including 5 cases (45.45%) of Sugaya type Ⅳ and 6 cases (54.55%) of Sugaya type Ⅴ. At last follow-up, the VAS score, ASES score, shoulder anteflexion and elevation range of motion, lateral external rotation range of motion, and anteflexion and elevation muscle strength significantly improved when compared with those before operation ( P<0.05); there was no significant difference in internal rotation range of motion between pre- and post-operation ( P>0.05). The Goutallier grade and modified Patte grade of supraspinatus muscle in the re-teared group were significantly higher than those in the intact tendon group, and the AHD was significantly lower than that in the intact tendon group ( P<0.05). There was no significant difference in other baseline data between the two groups ( P>0.05). Except that the ASES score of the intact tendon group was significantly higher than that of the re-teared group ( P<0.05), there was no significant difference in the other postoperative clinical functional indicators between the two groups ( P>0.05). There was no significant difference in the incidence of re-tear, VAS score, ASES score, range of motion of shoulder joint, and anteflexion and elevation muscle strength between group A and group B ( P>0.05). CONCLUSION Tendon insertion medialized repair may be useful in cases with L/MRCT, and shows good postoperative shoulder function. Neither tendon integrity nor medialization length shows apparent correlations with postoperative shoulder function.
Male ; Female ; Humans ; Middle Aged ; Rotator Cuff Injuries/surgery* ; Retrospective Studies ; Treatment Outcome ; Rotator Cuff/surgery* ; Tendons ; Rupture/surgery* ; Shoulder Joint/surgery* ; Arthroscopy/methods* ; Range of Motion, Articular

Objective To systematically evaluate the risk factors for postoperative delirium after surgery for Stanford type A aortic dissection. Methods We searched the CNKI, SinoMed, Wanfang data, VIP, PubMed, Web of Science, EMbase, The Cochrane Library database from inception to September 2022. Case-control studies, and cohort studies on risk factors for postoperative delirium after surgery for Stanford type A aortic dissection were collected to identify studies about the risk factors for postoperative delirium after surgery for Stanford type A aortic dissection. Quality of the included studies was evaluated by the Newcastle-Ottawa scale (NOS). The meta-analysis was performed by RevMan 5.3 software and Stata 15.0 software. Results A total of 21 studies were included involving 3385 patients. The NOS score was 7-8 points. The results of meta-analysis showed that age (MD=2.58, 95%CI 1.44 to 3.72, P＜0.000 01), male (OR=1.33, 95%CI 1.12 to 1.59, P=0.001), drinking history (OR=1.45, 95%CI 1.04 to 2.04, P=0.03), diabetes history (OR=1.44, 95%CI 1.12 to 1.85, P=0.005), preoperative leukocytes (MD=1.17, 95%CI 0.57 to 1.77), P=0.000 1), operation time (MD=21.82, 95%CI 5.84 to 37.80, P=0.007), deep hypothermic circulatory arrest (DHCA) time (MD=3.02, 95%CI 1.04 to 5.01, P=0.003), aortic occlusion time (MD=8.94, 95%CI 2.91 to 14.97, P=0.004), cardiopulmonary bypass time (MD=13.92, 95%CI 5.92 to 21.91, P=0.0006), ICU stay (MD=2.77, 95%CI 1.55 to 3.99, P＜0.000 01), hospital stay (MD=3.46, 95%CI 2.03 to 4.89, P＜0.0001), APACHEⅡ score (MD=2.76, 95%CI 1.59 to 3.93, P＜0.000 01), ventilation support time (MD=6.10, 95%CI 3.48 to 8.72, P＜0.000 01), hypoxemia (OR=2.32, 95%CI 1.40 to 3.82, P=0.001), the minimum postoperative oxygenation index (MD=−79.52, 95%CI −125.80 to −33.24, P=0.000 8), blood oxygen saturation (MD=−3.50, 95%CI −4.49 to −2.51, P＜0.000 01), postoperative hemoglobin (MD=−6.35, 95%CI −9.21 to −3.50, P＜0.000 1), postoperative blood lactate (MD=0.45, 95%CI 0.15 to 0.75, P=0.004), postoperative electrolyte abnormalities (OR=5.94, 95%CI 3.50 to 10.09, P＜0.000 01), acute kidney injury (OR=1.92, 95%CI 1.34 to 2.75, P=0.000 4) and postoperative body temperature (MD=0.79, 95%CI 0.69 to 0.88, P＜0.000 01) were associated with postoperative delirium after surgery for Stanford type A aortic dissection. Conclusion The current evidence shows that age, male, drinking history, diabetes history, operation time, DHCA time, aortic occlusion time, cardiopulmonary bypass time, ICU stay, hospital stay, APACHEⅡ score, ventilation support time, hypoxemia and postoperative body temperature are risk factors for the postoperative delirium after surgery for Stanford type A aortic dissection. Oxygenation index, oxygen saturation, and hemoglobin number are protective factors for delirium after Stanford type A aortic dissection.

OBJECTIVETo detect potential mutations of fibroblast growth factor receptor 2 gene (FGFR2) in two Chinese families with Crouzon syndrome.

METHODSGenomic DNA was extracted from peripheral blood leukocytes of 20 members from two affected families. All of the 18 exons of the FGFR2 gene were amplified with polymerase chain reaction and sequenced after purification.

RESULTSA missense mutation c.868T>C (p.W290R) in exon 8 of the FGFR2 gene was found solely in 2 affected members from family 1. Another missense mutation c.833G>T (p.C278F) in exon 8 was found solely in 5 affected members of family 2.

CONCLUSIONThe missense mutations of the FGFR2 gene are responsible for the Crouzon syndrome in the two families. The c.868T>C missense mutation is reported for the first time in Chinese population.

Adolescent ; Adult ; Asian Continental Ancestry Group ; genetics ; Base Sequence ; Case-Control Studies ; Child ; China ; Craniofacial Dysostosis ; genetics ; Female ; Humans ; Male ; Middle Aged ; Molecular Sequence Data ; Mutation, Missense ; Pedigree ; Receptor, Fibroblast Growth Factor, Type 2 ; genetics ; Young Adult

OBJECTIVETo search the candidate gene in the development and metastasis of lung adenocarcinoma and shed light on the possible molecular mechanism of the development of lung carcinoma.

METHODSUsing methods of cell culture, reverse transcription-PCR, RH gene mapping and RNA in situ hybridization.

RESULTSThe cDNA fragment named OPB7-1 was mapped at 1p31-1p34 by RH gene mapping method. The fragment sequences obtained from lung cDNA library of normal person and cell line of AGZY83-a were similar in length but showed individual base difference. For OPB7-1, there is a low homogeneity to known gene by analysis in GenBank, but 3 contigs homologous to OPB7-1 were located at chromosome 1(1p31-1p34). Different degrees of expression were noted in tumor tissues from 24 cases of lung carcinoma, however no significant expression was found in their corresponding normal tissues. And high expression was found in the lung tissues of cases with lymph node metastasis.

CONCLUSIONOPB7-1 may be a novel gene. It may be a tumor related gene in occurrence and metastasis of lung carcinoma.

Adenocarcinoma ; genetics ; Animals ; Chromosome Mapping ; Cloning, Molecular ; DNA, Complementary ; genetics ; Gene Expression Regulation, Neoplastic ; Genetic Predisposition to Disease ; genetics ; Humans ; In Situ Hybridization ; Lung Neoplasms ; genetics ; pathology ; RNA, Neoplasm ; genetics ; metabolism ; Radiation Hybrid Mapping ; Rats ; Tumor Cells, Cultured

According to the cancer stem cell theory, cancers can be initiated by cancer stem cells. This makes cancer stem cells prime targets for therapeutic intervention. Eradicating cancer stem cells by efficient targeting agents may have the potential to cure cancer. In this review, we summarize recent breakthroughs that have improved our understanding of cancer stem cells, and we discuss the therapeutic strategy of targeting cancer stem cells, a promising future direction for cancer stem cell research.
Antineoplastic Agents ; pharmacology ; therapeutic use ; Biomarkers, Tumor ; metabolism ; Cell Differentiation ; drug effects ; Drug Carriers ; Gold ; administration & dosage ; Humans ; Nanostructures ; Neoplasms ; drug therapy ; metabolism ; pathology ; Neoplastic Stem Cells ; drug effects ; metabolism ; pathology

OBJECTIVETo construct the small interfering RNA (siRNA) expression constructs targeting epidermal growth factor receptor(EGFR) and express them in TJ905 human malignant cells.

METHODSTwo target sequences from Receptor L domain and catalytic domain were selected to create two expression constructs using psiRNA-NeoG2. Furthermore, the siRNA constructs were transfected into TJ905 cells as mediated by Lipofectamin. Meanwhile, an antisense EGFR construct p-anti-hEGFR was set as control. Immunofluorescence and Western blot were performed to detect EGFR expression.

RESULTSWith the successful construction of the two siRNA expression plasmids and the stable transfection to TJ905 cells, the expression of EGFR was down-regulated to 90% and 92% respectively, but to 82% in the anti-sense EGFR group.

CONCLUSIONThe siRNA expression constructs targeting EGFR could specifically inhibit EGFR expression, and should be a new strategy in glioma gene therapy targeting EGFR.

Blotting, Western ; Cell Line, Tumor ; Fluorescent Antibody Technique ; Humans ; Models, Genetic ; Plasmids ; genetics ; RNA Interference ; RNA, Small Interfering ; genetics ; Receptor, Epidermal Growth Factor ; genetics ; metabolism ; Transfection ; methods

Objective     To investigate the risk factors for postoperative complications Clavien-Dindo classification≥grade Ⅱ after lung cancer surgery. Methods     The patients who underwent lung cancer surgery in a multicenter observational study from November 2017 to January 2020 were included. The Clavien-Dindo classification of postoperative complications was analyzed. Logistic regression was used to identify the risk factors for complications≥ gradeⅡ. Results     A total of 388 patients were enrolled, including 203 males and 185 females with a mean age of 56.14±10.36 years. The incidence of postoperative complications was 25.52% (99/388) after lung cancer surgery and the incidence of complications≥gradeⅡ was 20.10% (78/388). The five most common postoperative complications were pneumonia (6.96%), prolonged pulmonary air leak (>7 days, 5.67%), incision dehiscence (4.64%), arrhythmia (3.87%), and postoperative pleural effusion (3.35%). Multivariate analysis showed that open surgery [reference: uniportal thoracoscopic surgery, OR=2.18, 95%CI (1.01, 4.70), P=0.047], extended resection [reference: sublobar resection, OR=2.86, 95%CI (1.11, 7.19), P=0.030; reference: lobectomy, OR=2.20, 95%CI (1.10, 4.40), P=0.026] and operative time≥3 h [OR=2.07, 95%CI (1.12, 3.85), P=0.021] were independent risk factors for postoperative complications≥gradeⅡ after lung cancer surgery. Conclusion     Surgical approach, extent of resection and operative time are independent influencing factors for postoperative complications≥gradeⅡ after lung cancer surgery.

Objective    To reveal and demonstrate the hotspots and further research directions in screening technology for early lung cancer, and provide references for the future studies. Methods    Researches related to lung cancer screening from 2011 to 2021 in the Web of Science database were included. Biblioshiny, a bibliometrics program based on R language, was used to perform content analysis and visualization of the included literature information. Results    Researches related to lung cancer screening were increasing year by year. Six major cooperation groups were formed between countries. The current research hotspots in the field of early lung cancer screening technology mainly focused on the multi-directional fusion of radiographic imaging, liquid biopsy and artificial intelligence. Conclusion    Low-dose spiral CT screening is still the most important and mainstream method for the screening of early lung cancer at present. The combination and integration of artificial intelligence with various screening methods and the innovation of novel testing and diagnostic equipment are the current research hotspots and the future research trend in this field.