9 results on '"Qiaowei Lin"'
Search Results
2. Partial omentectomy maybe practicable for T3 or shallower gastric cancer patients
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Qiaowei Lin, Qianming Bai, Qiuyi Huang, Yakai Huang, Jianpeng Gao, and Yu Zhang
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gastric cancer ,omentectomy ,prognosis ,TNM stage ,tumor deposits ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Abstract Background Total omentectomy is often performed with gastrectomy as radical surgery for gastric cancer (GC) patients. However, it remains controversial whether GC patients can benefit from omentectomy. The aim of this study was to analyze the incidence and clinical significance of tumor deposits (TDs) in different anatomical subregions of perigastric omentum in GC patients undergoing gastrectomy with total omentectomy. Methods From October 2011 to December 2013, 1253 patients who underwent gastrectomy with total omentectomy for GC were retrospective reviewed. The TDs in different anatomical subregions of perigastric omentum were examined. Results Of 1253 patients, TDs positivity was 11.2%. Tumor deposits in the omentum of greater curvature and in the omentum of lesser curvature were associated with lymphovascular invasion, perineural invasion, advanced tumor node metastasis stages, and unfavorable survival. Besides, TDs in the proximal omentum of greater curvature and in the omentum of lesser curvature correlated with older patients and larger tumors. Kaplan–Meier curves showed that patients with TDs had worser overall survival (OS) than those without, regardless of TD positions. Patients with TDs in the omentum of greater curvature had the worst prognosis, followed by patients with TDs in the omentum of lesser curvature and patients with no TDs. Tumor deposits in the proximal omentum of greater curvature was an independent prognostic factor for OS. Moreover, only patients classified as pT4 had TDs in the distal omentum of greater curvature. Conclusions Patients with TDs in the omentum of greater curvature had the worst prognosis, followed by patients with TDs in the omentum of lesser curvature and patients with no TDs. In addition, partial omentectomy might be practicable for gastric cancer patients classified as T3 or shallower tumors.
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- 2023
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3. Identification of Novel Tumor Pyroptosis-Related Antigens and Pyroptosis Subtypes for Developing mRNA Vaccines in Pancreatic Adenocarcinoma
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Qiaowei Lin, Li Liang, Qing Wang, Xiao Wang, Yang You, Yefei Rong, Yuhong Zhou, and Xi Guo
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mRNA vaccine ,pancreatic adenocarcinoma ,pyroptosis subtype ,pyroptosis landscape ,hub genes ,Biology (General) ,QH301-705.5 - Abstract
Background: As one of the important components of immunotherapies, mRNA vaccines have displayed promising clinical outcomes in solid tumors. Nonetheless, their efficacy remains unclear in pancreatic adenocarcinoma (PAAD). Given the interaction of pyroptosis with anticancer immunity, our study aims to identify pyroptosis-related antigens for mRNA vaccine development and discern eligible candidates for vaccination. Methods: Utilizing gene expression data from TCGA and ICGC, we integrated RNA-seq data and compared genetic alterations through cBioPortal. Differential gene expressions were integrated using GEPIA. Relationships between immune cell abundance and tumor antigens were analyzed and visualized via TIMER. WGCNA facilitated the clustering of pyroptosis-related genes, identification of hub genes, and pathway enrichment analyses. Pyroptosis landscape was depicted through graph learning-based dimensional reduction. Results: Four overexpressed and mutant pyroptosis-related genes associated with poor prognosis were identified as potential antigens for mRNA vaccines in PAAD, including ANO6, PAK2, CHMP2B, and RAB5A. These genes displayed positive associations with antigen-presenting cells. PAAD patients were stratified into three pyroptosis subtypes. Notably, the PS3 subtype, characterized by a lower mutation count and TMB, exhibited “cold” immunological traits and superior survival compared to other subtypes. The pyroptosis landscape exhibited considerable heterogeneity among individuals. Furthermore, the turquoise module emerged as an independent prognostic indicator and patients with high expressions of hub genes might not be suitable candidates for mRNA vaccination. Conclusions: In PAAD, ANO6, PAK2, CHMP2B, and RAB5A are prospective pyroptosis-related antigens for mRNA vaccine development, which holds potential benefits for patients classified as PS3 and those with diminished hub gene expressions, providing insights into personalized mRNA vaccine strategies.
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- 2024
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4. Ultrafast presodiation of graphene anodes for high‐efficiency and high‐rate sodium‐ion storage
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Ganyu Zheng, Qiaowei Lin, Jiabin Ma, Jun Zhang, Yan‐Bing He, Xian Tang, Feiyu Kang, Wei Lv, and Quan‐Hong Yang
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high rate ,initial Coulombic efficiency ,presodiation ,sodium‐ion batteries ,solid electrolyte interphase ,Materials of engineering and construction. Mechanics of materials ,TA401-492 ,Information technology ,T58.5-58.64 - Abstract
Abstract The low initial Coulombic efficiency (ICE) is a significant problem hindering the practical uses of carbon anodes in sodium‐ion batteries (SIBs), especially for the carbons with large surface area. Presodiation is an effective way to solve the above problem, but it always needs complicated operations and cannot suppress the unavoidable electrolyte decomposition in the assembled battery. Herein, we develop an ultrafast chemical presodiation method for reduced graphene oxide (rGO) using sodium naphthalene (Na‐Nt) dissolved in dimethoxyethane (DME) solvent as a presodiation reagent. The presodiation effectively improves the ICE of rGO to 96.8% and forms an artificial solid electrolyte interphase (SEI) on its surface due to the decomposition of the formed complex between Na+ and DME. The formed artificial SEI suppresses the excessive decomposition of electrolytes in the assembled battery, leading to a formation of uniform and inorganic component–rich SEI on rGO surface, which enables a rapid interfacial ion transfer. Therefore, the presodiated rGO showed excellent rate performance with a high capacity of 198.5 mAh g−1 at 5 A g−1. Moreover, excellent cycle stability indicated by the high capacity retention of 68.4% over 1000 cycles was also achieved, showing the potential to promote the practical uses of high‐rate rGO anode in SIBs.
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- 2021
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5. Integrated genomic and transcriptomic analysis revealed mutation patterns of de-differentiated liposarcoma and leiomyosarcoma
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Wenshuai Liu, Hanxing Tong, Chenlu Zhang, Rongyuan Zhuang, He Guo, Chentao Lv, Hua Yang, Qiaowei Lin, Xi Guo, Zhiming Wang, Yan Wang, Feng Shen, Shengzhou Wang, Chun Dai, Guan Wang, Jun Liu, Weiqi Lu, Yong Zhang, and Yuhong Zhou
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Soft tissue sarcoma ,Gene fusion ,Tumor microenvironment ,Immune infiltration ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Abstract Background Treating patients with advanced sarcomas is challenging due to great histologic diversity among its subtypes. Leiomyosarcoma (LMS) and de-differentiated liposarcoma (DDLPS) are two common and aggressive subtypes of soft tissue sarcoma (STS). They differ significantly in histology and clinical behaviors. However, the molecular driving force behind the difference is unclear. Methods We collected 20 LMS and 12 DDLPS samples and performed whole exome sequencing (WES) to obtain their somatic mutation profiles. We also performed RNA-Seq to analyze the transcriptomes of 8 each of the LMS and DDLPS samples and obtained information about differential gene expression, pathway enrichment, immune cell infiltration in tumor microenvironment, and chromosomal rearrangement including gene fusions. Selected gene fusion events from the RNA-seq prediction were checked by RT-PCR in tandem with Sanger sequencing. Results We detected loss of function mutation and deletion of tumor suppressors mostly in LMS, and oncogene amplification mostly in DDLPS. A focal amplification affecting chromosome 12q13–15 region which encodes MDM2, CDK4 and HMGA2 is notable in DDLPS. Mutations in TP53, ATRX, PTEN, and RB1 are identified in LMS but not DDLPS, while mutation of HERC2 is only identified in DDLPS but not LMS. RNA-seq revealed overexpression of MDM2, CDK4 and HMGA2 in DDLPS and down-regulation of TP53 and RB1 in LMS. It also detected more fusion events in DDLPS than LMS (4.5 vs. 1, p = 0.0195), and the ones involving chromosome 12 in DDLPS stand out. RT-PCR and Sanger sequencing verified the majority of the fusion events in DDLPS but only one event in LMS selected to be tested. The tumor microenvironmental signatures are highly correlated with histologic types. DDLPS has more endothelial cells and fibroblasts content than LMS. Conclusions Our analysis revealed different recurrent genetic variations in LMS and DDLPS including simultaneous upregulation of gene expression and gene copy number amplification of MDM2 and CDK4. Up-regulation of tumor related genes is favored in DDLPS, while loss of suppressor function is favored in LMS. DDLPS harbors more frequent fusion events which can generate neoepitopes and potentially targeted by personalized immune treatment.
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- 2020
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6. Surgical treatment strategies for extra-pelvic intravenous leiomyomatosis
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Hua Li, Jing Xu, Qiaowei Lin, Yong Zhang, Yun Zhao, Hanxing Tong, Ruiqin Tu, Demin Xu, Chunsheng Wang, and Weiqi Lu
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Intravenous leiomyomatosis ,Intracardiac leiomyomatosis ,Single-stage surgery ,Surgical strategies ,Vena cava invasion ,Medicine - Abstract
Abstract Background Extra-pelvic intravenous leiomyomatosis (IVL) extending into inferior vena cava (IVC) or heart (i.e. intracardiac leiomyomatosis, ICL) is an extremely rare benign disease. No consensus has been reached on the optimal surgical strategy. The aim of this study is to introduce four types of one-stage surgical strategies including less invasive options and a guideline to select patient-specific strategy for this disease. Methods Twenty-four patients of extra-pelvic IVLs receiving one-stage resections at the Zhongshan Hospital from July 2011 to November 2019 were reviewed retrospectively. Base on the initial experiences of the indiscriminate choices of tumor thrombectomies through sterno-laparotomy under cardiopulmonary bypass (CPB) in 6 ICLs, an anatomy-based guideline for four types of surgical strategies was developed and applied for the next 18 patients. Results Under the direction of guideline, tumor thrombectomies through single laparotomy were applied without CPB in 2 ICLs and 4 IVLs confined in IVC, or with CPB in 7 ICLs. Guideline-directed double-incisions with CPB were applied in only 5 ICLs, including 1 receiving mini-thoracotomy and 4 receiving sternotomy because of tumor adherences with right atriums in 2 and with pulmonary arteries in 2. All 24 patients accomplished one-stage panhysterectomy, bilateral adnexectomy and complete resections of intracaval and intracardiac tumors. For residual pelvic intravenous tumors in 19 patients, 17 received macroscopically complete resections while the other 2 failed because of high risk of hemorrhage. Intraoperative blood losses, operation time and hospitalization expense in the single-laparotomy non-CPB group were significantly lesser than the other groups. In CPB groups, inpatient stay and hospitalization expense in the single-incision group were significantly lesser than the double-incisions group. All patients were alive and free of recurrences during a mean follow-up of 35.4 ± 27.2 months (range, 1–100 months). The pelvic tumor residues in 2 patients remained unchanged for 51 and 52 months since operation, respectively. Conclusions For various extra-pelvic IVLs, the 4 types of surgical strategies including less invasive options are feasible, providing these are selected by a guideline base on the tumor extension and morphology. The proposed guideline is believed to accommodate more patients receiving less invasive surgery without compromising the curative effect.
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- 2020
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7. Tumor-associated tertiary lymphoid structure predicts postoperative outcomes in patients with primary gastrointestinal stromal tumors
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Qiaowei Lin, Ping Tao, Jiongyuan Wang, Lijie Ma, Quan Jiang, Jinglei Li, Ge Zhang, Ju Liu, Yong Zhang, Yingyong Hou, Weiqi Lu, Ruyi Xue, and Hanxing Tong
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tertiary lymphoid structure (tls) ,gastrointestinal stromal tumor (gist) ,immune microenvironment ,prognosis ,imatinib ,Immunologic diseases. Allergy ,RC581-607 ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Tumor-infiltrating tertiary lymphoid structures (TLS) are thought to have anti-tumor activity and are believed to indicate a favorable prognosis in cancer patients. However, the prognostic value of TLS in gastrointestinal stromal tumors (GIST) is unknown. We evaluated the prognostic value of TLS using two independent GIST cohorts. Pathological examinations identified TLS in 44.9% of patients in our discovery cohort (DC). TLS was significantly associated with smaller tumor size (P = .011), relatively well morphological classification (P
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- 2020
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8. Circ-PTPDC1 promotes the Progression of Gastric Cancer through Sponging Mir-139-3p by Regulating ELK1 and Functions as a Prognostic Biomarker.
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Zhouxiao Li, Ye Cheng, Kai Fu, Qiaowei Lin, Tianyu Zhao, Weiwei Tang, Lei Xi, Lulu Sheng, Hao Zhang, and Yangbai Sun
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- 2021
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9. Effects of Eicosapentaenoic Acid and Docosahexaenoic Acid on Chylomicron and VLDL Synthesis and Secretion in Caco-2 Cells.
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Yue Wang, Qiaowei Lin, Peipei Zheng, Lulu Li, Zhengxi Bao, and Feiruo Huang
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The present research was undertaken to determine the effects of EPA (20 : 5 n-3) and DHA (22 : 6 n-3) on chylomicron and VLDL synthesis and secretion byCaco-2 cells. Cells were incubated for 12 to 36 h with 400 μMOA, EPA, and DHA; then 36 h was chosen for further study because EPA and DHA decreased de novo triglycerides synthesis in a longer incubation compared with OA (P < 0.01). Neither the uptake nor oxidation was different in response to the respective fatty acids (P > 0.05). Compared with OA, intercellular and secreted nascent apolipoprotein B48 and B100 were decreased by EPA and DHA (P < 0.01). Both DHA and EPA resulted in a lower secretion of chylomicron and VLDL (P < 0.01). In contrast to OA, EPA and DHA were preferentially incorporated into phospholipids instead of triacylglycerols (P < 0.01). These discoveries demonstrated that exposure of DHA and EPA reduced the secretion of chylomicron and VLDL partly by regulating the synthesis of TG and apoB. [ABSTRACT FROM AUTHOR]
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- 2014
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