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Guo Y, Li S, Shi Z, Chen B, Wan Z, Yu P, Zheng B, Gong W, Chai R, Tu S, Yuan H. EEPD1 is identified as a predictor of prognosis and immune microenvironment through pan-cancer analysis and related to progression of colorectal cancer. Heliyon 2024; 10:e29285. [PMID: 38633650 PMCID: PMC11021989 DOI: 10.1016/j.heliyon.2024.e29285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 04/03/2024] [Accepted: 04/04/2024] [Indexed: 04/19/2024] Open
Abstract
Background EEPD1 is vital in homologous recombination, while its role in cancer remains unclear. Methods We performed multiple pan-cancer analyses of EEPD1 with bioinformatics methods, such as gene expression, gene alterations, Prognosis and enrichment analysis, tumor microenvironment, immune cell infiltration, TMB, MSI, immunotherapy, co-expression of genes, and drug resistance. Finally, RT-qPCR, EdU, and transwell assays helped investigate the impact of EEPD1 on CRC cells. Results EEPD1 was dysregulated and correlated with bad prognosis in several cancers. GSVA and GSEA revealed that EEPD1 was primarily associated with the "WNT_BETA_CATENIN_SIGNALING," "ribonucleoprotein complex biogenesis," "Ribosome," and "rRNA processing." The infiltration of CD8+ T cells, MAIT cells, iTreg cells, NK cells, Tc cells, Tex cells, Tfh cells, and Th1 cells were negatively correlated with EEPD1 expression. Additionally, EEPD1 is significantly associated with TMB and MSI in COAD, while enhanced CRC cell proliferation and migration. Conclusions EEPD1 was dysregulated in human cancers and correlated with various cancer patient prognoses. The dysregulated EEPD1 expression can affect tumor-infiltrating immune cells and immunotherapy response. Therefore, EEPD1 could act as an oncogene associated with immune cell infiltration in CRC.
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Affiliation(s)
- Yang Guo
- General Surgery, Cancer Center, Department of Colorectal Surgery, Zhejiang Provincial People's Hospital(Affiliated People's Hospital, Hangzhou Medical College), Hangzhou, Zhejiang, 310014, PR China
| | - Shujin Li
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, 310053, PR China
| | - Zhan Shi
- General Surgery, Cancer Center, Department of Colorectal Surgery, Zhejiang Provincial People's Hospital(Affiliated People's Hospital, Hangzhou Medical College), Hangzhou, Zhejiang, 310014, PR China
| | - Bingchen Chen
- General Surgery, Cancer Center, Department of Colorectal Surgery, Zhejiang Provincial People's Hospital(Affiliated People's Hospital, Hangzhou Medical College), Hangzhou, Zhejiang, 310014, PR China
| | - Ziang Wan
- General Surgery, Cancer Center, Department of Colorectal Surgery, Zhejiang Provincial People's Hospital(Affiliated People's Hospital, Hangzhou Medical College), Hangzhou, Zhejiang, 310014, PR China
| | - Peng Yu
- General Surgery, Cancer Center, Department of Colorectal Surgery, Zhejiang Provincial People's Hospital(Affiliated People's Hospital, Hangzhou Medical College), Hangzhou, Zhejiang, 310014, PR China
| | - Boan Zheng
- General Surgery, Cancer Center, Department of Colorectal Surgery, Zhejiang Provincial People's Hospital(Affiliated People's Hospital, Hangzhou Medical College), Hangzhou, Zhejiang, 310014, PR China
| | - Wenjing Gong
- General Surgery, Cancer Center, Department of Colorectal Surgery, Zhejiang Provincial People's Hospital(Affiliated People's Hospital, Hangzhou Medical College), Hangzhou, Zhejiang, 310014, PR China
| | - Rui Chai
- General Surgery, Cancer Center, Department of Colorectal Surgery, Zhejiang Provincial People's Hospital(Affiliated People's Hospital, Hangzhou Medical College), Hangzhou, Zhejiang, 310014, PR China
| | - Shiliang Tu
- General Surgery, Cancer Center, Department of Colorectal Surgery, Zhejiang Provincial People's Hospital(Affiliated People's Hospital, Hangzhou Medical College), Hangzhou, Zhejiang, 310014, PR China
| | - Hang Yuan
- General Surgery, Cancer Center, Department of Colorectal Surgery, Zhejiang Provincial People's Hospital(Affiliated People's Hospital, Hangzhou Medical College), Hangzhou, Zhejiang, 310014, PR China
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Gong W, Guo Y, Yuan H, Chai R, Wan Z, Zheng B, Hu X, Chen B, Gao S, Dai Q, Yu P, Tu S. Loss of exosomal miR-200b-3p from hypoxia cancer-associated fibroblasts promotes tumorigenesis and reduces sensitivity to 5-Flourouracil in colorectal cancer via upregulation of ZEB1 and E2F3. Cancer Gene Ther 2023:10.1038/s41417-023-00591-5. [PMID: 36890211 DOI: 10.1038/s41417-023-00591-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 01/05/2023] [Accepted: 01/17/2023] [Indexed: 03/10/2023]
Abstract
Hypoxia-mediated tumor progression is a major clinical challenge in human cancers including colorectal cancer (CRC). In addition, exosome-mediated transfer of miRNAs from cancer-associated fibroblasts (CAFs) to cancer cells could promote tumor progression. However, the mechanisms by which hypoxia CAFs promotes CRC progression remain largely unknown. CAFs and normal fibroblasts (NFs) were isolated from CRC tissues and adjacent normal tissues. Next, exosomes were isolated from the supernatant of CAFs that cultured under normoxia (CAFs-N-Exo) and hypoxia (CAFs-H-Exo). RNA-sequencing was then performed to identify differentially expressed miRNAs (DEMs) between CAFs-N-Exo and CAFs-H-Exo. Compared with exosomes derived from normoxia CAFs, exosomes derived from hypoxic CAFs were able to promote CRC cell proliferation, migration, invasion, stemness and reduce the sensitivity of CRC cells to 5-fluorouracil (5-FU). In addition, miR-200b-3p levels were dramatically decreased in exosomes derived from hypoxic CAFs. Remarkably, increasing exosomal miR-200b-3p in hypoxic CAFs reversed the promoting effects of hypoxic CAFs on CRC cell growth in vitro and in vivo. Furthermore, miR-200b-3p agomir could inhibit CRC cell migration, invasion, stemness and increase the sensitivity of SW480 cells to 5-FU via downregulating ZEB1 and E2F3. Collectively, loss of exosomal miR-200b-3p in hypoxia CAFs could contribute to CRC progression via upregulation of ZEB1 and E2F3. Thus, increasing exosomal miR-200b-3p might serve as an alternative approach for the treatment of CRC.
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Affiliation(s)
- Wenjing Gong
- General Surgery, Cancer Center, Department of Colorectal Surgery, Zhejiang Provincial People's Hospital (Affiliated People's Hospital, Hangzhou Medical College), Hangzhou, Zhejiang, 310014, PR China
| | - Yang Guo
- General Surgery, Cancer Center, Department of Colorectal Surgery, Zhejiang Provincial People's Hospital (Affiliated People's Hospital, Hangzhou Medical College), Hangzhou, Zhejiang, 310014, PR China
| | - Hang Yuan
- General Surgery, Cancer Center, Department of Colorectal Surgery, Zhejiang Provincial People's Hospital (Affiliated People's Hospital, Hangzhou Medical College), Hangzhou, Zhejiang, 310014, PR China
| | - Rui Chai
- General Surgery, Cancer Center, Department of Colorectal Surgery, Zhejiang Provincial People's Hospital (Affiliated People's Hospital, Hangzhou Medical College), Hangzhou, Zhejiang, 310014, PR China
| | - Ziang Wan
- General Surgery, Cancer Center, Department of Colorectal Surgery, Zhejiang Provincial People's Hospital (Affiliated People's Hospital, Hangzhou Medical College), Hangzhou, Zhejiang, 310014, PR China
| | - Boan Zheng
- General Surgery, Cancer Center, Department of Colorectal Surgery, Zhejiang Provincial People's Hospital (Affiliated People's Hospital, Hangzhou Medical College), Hangzhou, Zhejiang, 310014, PR China
| | - Xinye Hu
- General Surgery, Cancer Center, Department of Colorectal Surgery, Zhejiang Provincial People's Hospital (Affiliated People's Hospital, Hangzhou Medical College), Hangzhou, Zhejiang, 310014, PR China
| | - Bingchen Chen
- General Surgery, Cancer Center, Department of Colorectal Surgery, Zhejiang Provincial People's Hospital (Affiliated People's Hospital, Hangzhou Medical College), Hangzhou, Zhejiang, 310014, PR China
| | - Shan Gao
- General Surgery, Cancer Center, Department of Colorectal Surgery, Zhejiang Provincial People's Hospital (Affiliated People's Hospital, Hangzhou Medical College), Hangzhou, Zhejiang, 310014, PR China
| | - Qiaoqiong Dai
- General Surgery, Cancer Center, Department of Colorectal Surgery, Zhejiang Provincial People's Hospital (Affiliated People's Hospital, Hangzhou Medical College), Hangzhou, Zhejiang, 310014, PR China
| | - Peng Yu
- General Surgery, Cancer Center, Department of Colorectal Surgery, Zhejiang Provincial People's Hospital (Affiliated People's Hospital, Hangzhou Medical College), Hangzhou, Zhejiang, 310014, PR China
| | - Shiliang Tu
- General Surgery, Cancer Center, Department of Colorectal Surgery, Zhejiang Provincial People's Hospital (Affiliated People's Hospital, Hangzhou Medical College), Hangzhou, Zhejiang, 310014, PR China.
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Chen G, Yang RY, Chai R, Pan JY, Bao JY, Xia PH, Wang YK, Chen Y, Li Y, Wu J. Knockdown of polypyrimidine tract binding protein facilitates motor function recovery after spinal cord injury. Neural Regen Res 2023; 18:396-403. [PMID: 35900436 PMCID: PMC9396513 DOI: 10.4103/1673-5374.346463] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
After spinal cord injury (SCI), a fibroblast- and microglia-mediated fibrotic scar is formed in the lesion core, and a glial scar is formed around the fibrotic scar as a result of the activation and proliferation of astrocytes. Simultaneously, a large number of neurons are lost in the injured area. Regulating the dense glial scar and replenishing neurons in the injured area are essential for SCI repair. Polypyrimidine tract binding protein (PTB), known as an RNA-binding protein, plays a key role in neurogenesis. Here, we utilized short hairpin RNAs (shRNAs) and antisense oligonucleotides (ASOs) to knock down PTB expression. We found that reactive spinal astrocytes from mice were directly reprogrammed into motoneuron-like cells by PTB downregulation in vitro. In a mouse model of compression-induced SCI, adeno-associated viral shRNA-mediated PTB knockdown replenished motoneuron-like cells around the injured area. Basso Mouse Scale scores and forced swim, inclined plate, cold allodynia, and hot plate tests showed that PTB knockdown promoted motor function recovery in mice but did not improve sensory perception after SCI. Furthermore, ASO-mediated PTB knockdown improved motor function restoration by not only replenishing motoneuron-like cells around the injured area but also by modestly reducing the density of the glial scar without disrupting its overall structure. Together, these findings suggest that PTB knockdown may be a promising therapeutic strategy to promote motor function recovery during spinal cord repair.
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Yang Y, Chai R, Sun X, Li Y. Optimal Pricing and Return-Freight Insurance: Strategic Analysis of E-Sellers in the Presence of Reputation Differentiation. J Syst Sci Complex 2022; 35:2302-2318. [PMID: 36590987 PMCID: PMC9795440 DOI: 10.1007/s11424-022-1262-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 08/09/2021] [Indexed: 06/17/2023]
Abstract
Motivated by the practice that e-sellers cooperate with insurance companies to offer consumers the return-freight insurance (RI), this paper aims to investigate the competing e-sellers' RI strategies. Regarding the information asymmetry in the online context, reputation system is widely applied by e-platforms. In an online market with two competing e-sellers that sell the same product but are differentiated in their reputation, this paper builds an analytical model to explore the e-sellers optimal pricing and RI strategies. Combined with sellers' reputation and their RI strategies, the equilibrium outcomes under four cases are discussed. This paper reveals the conditions that e-sellers are willing to offer RI. Specifically, the findings demonstrate that low reputation e-seller is more likely to offer RI. Moreover, when the sellers are more divergent, they are more likely to co-exist in the market. Insurance premium and RI compensation play critical roles in their decisions. RI introduction tends to increase the price, thus offsets the benefits of RI, but does not affect the total consumer surplus.
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Affiliation(s)
- Ying Yang
- School of Economics and Management, Xidian University, Xi’an, 710126 China
- Research Center for Digital Economy (Greater Bay Area), School of Economics and Management Shenzhen Research Institute, Tsinghua University, Shenzhen, 518057 China
| | - Rui Chai
- Meituan, BC Block, Wangjing Hengdian Building, Beijing, 100102 China
| | - Xinyu Sun
- School of Management, Xi’an Jiaotong University, Xi’an, 710049 China
| | - Yiming Li
- School of Economics and Management, Xidian University, Xi’an, 710126 China
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Chai R, Wang J, Zhan M, Yuan D, Chi Z, Gu H, Mao J. Pre-Drying of Chlorine-Organic-Contaminated Soil in a Rotary Dryer for Energy Efficient Thermal Remediation. Int J Environ Res Public Health 2022; 19:16607. [PMID: 36554489 PMCID: PMC9779612 DOI: 10.3390/ijerph192416607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 11/27/2022] [Accepted: 12/01/2022] [Indexed: 06/17/2023]
Abstract
In response to the current problem of the high energy consumption of direct thermal desorption systems when treating soils with a high moisture content, we propose using the waste heat of the system to pre-dry soil to reduce its moisture. Taking chlorine-organic-contaminated soil as an object, an experimental study on the drying and pollutant desorption characteristics of soil in an indirect rotary dryer was carried out. The results show that the non-isothermal drying process was divided into warm-up and falling rate periods, and no constant period was observed. The higher the rotation speed, the lower the soil outlet temperature and the higher the drying tail gas temperature. Soil outlet and dry tail gas temperatures were lower for soils with a higher moisture content. Benzene and cis-1,2-dichloroethylene are easily desorbed. Therefore, the disposal of dry tail gas should be determined according to the type and concentration of soil pollutants present. The volumetric heat transfer coefficient was found to be 85-100 W m-3 °C-1, which provides a key parameter for the size design of a rotary dryer.
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Yuan H, Chen B, Chai R, Gong W, Wan Z, Zheng B, Hu X, Guo Y, Gao S, Dai Q, Yu P, Tu S. Loss of exosomal micro-RNA-200b-3p from hypoxia cancer-associated fibroblasts reduces sensitivity to 5-flourouracil in colorectal cancer through targeting high-mobility group box 3. Front Oncol 2022; 12:920131. [PMID: 36276139 PMCID: PMC9581251 DOI: 10.3389/fonc.2022.920131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 09/09/2022] [Indexed: 11/24/2022] Open
Abstract
Hypoxia-mediated tumor progression is a major problem in colorectal cancer (CRC). MicroRNA (miR)-200b-3p can attenuate tumorigenesis in CRC, while exosomal miRNAs derived from cancer-associated fibroblasts (CAFs) can promote cancer progression. Nevertheless, the function of exosomal miR-200b-3p derived from CAFs in CRC remains unclear. In this study, CAFs and normal fibroblasts (NFs) were isolated from CRC and adjacent normal tissues. Next, exosomes were isolated from the supernatants of CAFs cultured under normoxia and hypoxia. Cell viability was tested using the cell counting kit-8 assay, and flow cytometry was used to assess cell apoptosis. Cell invasion and migration were evaluated using the transwell assay. Dual-luciferase was used to investigate the relationship between miR-200b-3p and high-mobility group box 3 (HMBG3). Reverse transcription-quantitative polymerase chain reaction (RT-qPCR) was performed to determine the miR-200b-3p and HMBG3 level. Our results found that the miR-200b-3p level was sharply reduced in CRC tissues compared to adjacent normal tissues. Additionally, the miR-200b-3p level was reduced in exosomes derived from hypoxic CAFs compared to exosomes derived from CAFs under normoxia. Exosomes derived from hypoxic CAFs weakened the sensitivity of CRC cells to 5-fluorouracil (5-FU) compared to hypoxic CAFs-derived exosomes. However, hypoxic CAFs-derived exosomes with upregulated miR-200b-3p increased the sensitivity of CRC cells to 5-fluorouracil (5-FU) compared to hypoxic CAFs-derived exosomes. In addition, HMBG3 was identified as the downstream target of miR-200b-3p in CRC cells, and its overexpression partially reversed the anti-tumor effect of the miR-200b-3p agomir on CRC via the mediation of the β-catenin/c-Myc axis. Furthermore, compared to exosomes derived from normoxia CAFs, exosomes derived from hypoxic CAFs weakened the therapeutic effects of 5-FU on CRC in vivo via the upregulation of HMGB3 levels. Collectively, the loss of exosomal miR-200b-3p in hypoxia CAFs reduced the sensitivity to 5-FU in CRC by targeting HMGB3. Thus, our research outlines a novel method for the treatment of CRC.
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Feng E, Qin P, Chai R, Zeng J, Wang Q, Meng Y, Wang P. MRI Generated from CT for Acute Ischemic Stroke Combining Radiomics and Generative Adversarial Networks. IEEE J Biomed Health Inform 2022; 26:6047-6057. [PMID: 36094997 DOI: 10.1109/jbhi.2022.3205961] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Compared to computed tomography (CT), magnetic resonance imaging (MRI) is more sensitive to acute ischemic stroke lesion. However, MRI is time-consuming, expensive, and susceptible to interference from metal implants. Generating MRI images from CT images can address the limitations of MRI. The key problem in the process is obtaining lesion information from CT. In this study, we propose a cross-modal image generation algorithm from CT to MRI for acute ischemic stroke by combining radiomics with generative adversarial networks. First, the lesion candidate region was obtained using radiomics, the radiomic features of the region were extracted, and the feature with the largest information gain was selected and visualized as a feature map. Then, the concatenation of the extracted feature map and the CT image was input in the generator. We added a residual module after the downsampling of the generator, following the general shape of U-Net, which can deepen the network without causing degradation problems. In addition, we introduced the lesion feature similarity loss function to focus the model on the similarity of the lesion. Through the subjective judgment of two experienced radiologists and using evaluation metrics, the results showed that the generated MRI images were very similar to the real MRI images. Moreover, the locations of the lesions were correct, and the shapes of lesions were similar to those of the real lesions, which can help doctors with timely diagnosis and treatment.
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Xing L, Chai R, Wang J, Lin J, Li H, Wang Y, Lai B, Sun J, Chen G. Expression of myelin transcription factor 1 and lamin B receptor mediate neural progenitor fate transition in the zebrafish spinal cord pMN domain. J Biol Chem 2022; 298:102452. [PMID: 36063998 PMCID: PMC9530849 DOI: 10.1016/j.jbc.2022.102452] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 08/17/2022] [Accepted: 08/20/2022] [Indexed: 02/05/2023] Open
Abstract
The pMN domain is a restricted domain in the ventral spinal cord, defined by the expression of the olig2 gene. Though it is known that the pMN progenitor cells can sequentially generate motor neurons and oligodendrocytes, the lineages of these progenitors are controversial and how their progeny are generated is not well understood. Using single-cell RNA sequencing, here, we identified a previously unknown heterogeneity among pMN progenitors with distinct fates and molecular signatures in zebrafish. Notably, we characterized two distinct motor neuron lineages using bioinformatic analysis. We then went on to investigate specific molecular programs that regulate neural progenitor fate transition. We validated experimentally that expression of the transcription factor myt1 (myelin transcription factor 1) and inner nuclear membrane integral proteins lbr (lamin B receptor) were critical for the development of motor neurons and neural progenitor maintenance, respectively. We anticipate that the transcriptome features and molecular programs identified in zebrafish pMN progenitors will not only provide an in-depth understanding of previous findings regarding the lineage analysis of oligodendrocyte progenitor cells and motor neurons but will also help in further understanding of the molecular programming involved in neural progenitor fate transition.
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Affiliation(s)
- Lingyan Xing
- Key Laboratory of Neuroregeneration of Jiangsu and the Ministry of Education, Co-Innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, China,For correspondence: Lingyan Xing; Gang Chen
| | - Rui Chai
- Key Laboratory of Neuroregeneration of Jiangsu and the Ministry of Education, Co-Innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, China
| | - Jiaqi Wang
- Department of Physiology, School of Medicine, Nantong University, Nantong, China
| | - Jiaqi Lin
- Department of Physiology, School of Medicine, Nantong University, Nantong, China
| | - Hanyang Li
- Key Laboratory of Neuroregeneration of Jiangsu and the Ministry of Education, Co-Innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, China
| | - Yueqi Wang
- School of Medicine, University of Utah, Salt Lake City, Utah, USA
| | - Biqin Lai
- Key Laboratory for Stem Cells and Tissue Engineering (Sun Yat-sen University), Ministry of Education, Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, China
| | - Junjie Sun
- Key Laboratory of Neuroregeneration of Jiangsu and the Ministry of Education, Co-Innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, China
| | - Gang Chen
- Key Laboratory of Neuroregeneration of Jiangsu and the Ministry of Education, Co-Innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, China,Basic Medical Research Center, School of Medicine, Nantong University, Nantong, China,For correspondence: Lingyan Xing; Gang Chen
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Xi R, Wan Y, Yang L, Zhang J, Yang L, Yang S, Chai R, Mu F, Sun Q, Yan R, Wu Z, Li S. Investigating Celastrol's Anti-DCM Targets and Mechanisms via Network Pharmacology and Experimental Validation. Biomed Res Int 2022; 2022:7382130. [PMID: 35845929 PMCID: PMC9278495 DOI: 10.1155/2022/7382130] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 05/31/2022] [Indexed: 12/13/2022]
Abstract
Methods Data from TCMSP and GEO databases were utilized to identify targets for Celastrol on DCM. The relationship between the major targets and conventional glycolipid metabolism was obtained with Spearman correlation analysis. Experiments on animals were conducted utilizing healthy control (HC), low-dose Celastrol interventions (CL), and no intervention groups (NC), all of which had 8 SD rats in each group. To study alterations in signaling molecules, RT-PCR was performed. Results There were 76 common targets and 5 major targets for Celastrol-DCM. Celastrol have been found to regulate AGE-RAGE, TNF, MAPK, TOLL-like receptors, insulin resistance, and other signaling pathways, and they are closely linked to adipocytokines, fatty acid metabolism, glycolipid biosynthesis, and glycosylphosphati-dylinositol biosynthesis on DCM. These five major targets have been found to regulate these pathways. Experiments on rats indicated that P38 MAPK was considerably elevated in the cardiac tissue from rats in the CL and NC groups compared to the HC group, and the difference was statistically significant (P < 0.01). Significant differences were seen between the CL and NC groups in P38 MAPK levels, with a statistical significance level of less than 0.05. Conclusion Celastrol may play a role in reversing energy remodeling, anti-inflammation, and oxidative stress via modulating p38 protein expression in the MAPK pathway, which have been shown in the treatment of DCM.
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Affiliation(s)
- Rui Xi
- Department of Nuclear Medicine, First Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Yongxin Wan
- Department of Nuclear Medicine, First Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Lihong Yang
- Department of Nuclear Medicine, First Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Jingying Zhang
- Department of Nuclear Medicine, First Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Liu Yang
- Department of Nuclear Medicine, First Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Shuai Yang
- Department of Nuclear Medicine, First Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Rui Chai
- Department of Nuclear Medicine, First Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Fengchen Mu
- Department of Vascular Medicine, Shanxi Cardiovascular Hospital, Taiyuan, Shanxi, China
| | - Qiting Sun
- Department of Nuclear Medicine, Shanxi Cardiovascular Hospital, Taiyuan, Shanxi, China
| | - Rui Yan
- Department of Nuclear Medicine, First Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Zhifang Wu
- Department of Nuclear Medicine, First Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
- Molecular Imaging Precision Medical Collaborative Innovation Center, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Sijin Li
- Department of Nuclear Medicine, First Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
- Molecular Imaging Precision Medical Collaborative Innovation Center, Shanxi Medical University, Taiyuan, Shanxi, China
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Gong W, Guo Y, Yuan H, Hu X, Chai R, Zheng B, Wan Z, Tu S. HMGB3 is a Potential Therapeutic Target by Affecting the Migration and Proliferation of Colorectal Cancer. Front Cell Dev Biol 2022; 10:891482. [PMID: 35712661 PMCID: PMC9194825 DOI: 10.3389/fcell.2022.891482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 05/13/2022] [Indexed: 11/20/2022] Open
Abstract
Colorectal cancer is one of the common malignant tumors in the digestive system, with high incidence and mortality rate. Therefore, there is an urgent need to identify and develop new molecular targets for colorectal cancer treatment. Previous studies have pointed out the important role of HMGB3 in tumors, and how it works in colorectal cancer needs to be studied in depth. In this study, we found that HMGB3 was highly expressed in COAD in the cBioPortal and GEPIA2 databases. Kaplan-Meier analysis showed that compared with patients with lower HMGB3 levels, patients with higher HMGB3 levels had poorer OS (p = 0.001). We also found a correlation between HMGB3 expression and immune infiltration of CRC. To investigate the mechanism of HMGB3 knockdown-mediated colorectal cancer inhibition, we detected a downregulation of N-cadherin, Vimentin and β-catenin proteins after knockdown of HMGB3. Taken together, HMGB3 can be an effective target for CRC treatment in the future, and we have reason to believe that HMGB3 will be of greater value in more tumors in the near future.
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Affiliation(s)
| | | | | | | | | | | | - Ziang Wan
- *Correspondence: Ziang Wan, ; Shiliang Tu,
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Tu SL, Chen S, Gao S, Dong QJ, Wan ZA, Chai R. WITHDRAWN: LncRNA USP1 Knockdown Weakens the Progression of Colorectal Cancer via Modulating UBAP2L-Smad7-TGF-β Pathway. Comb Chem High Throughput Screen 2022; 25:CCHTS-EPUB-123266. [PMID: 35579161 DOI: 10.2174/1386207325666220509191309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 03/02/2022] [Accepted: 03/19/2022] [Indexed: 01/24/2023]
Abstract
Since the authors are not responding to the editor’s requests to fulfill the editorial requirement, therefore, the article has been withdrawn. Bentham Science apologizes to the readers of the journal for any inconvenience this may have caused. The Bentham Editorial Policy on Article Withdrawal can be found at https://benthamscience.com/editorial-policies-main.php. BENTHAM SCIENCE DISCLAIMER It is a condition of publication that manuscripts submitted to this journal have not been published and will not be simultaneously submitted or published elsewhere. Furthermore, any data, illustration, structure or table that has been published elsewhere must be reported, and copyright permission for reproduction must be obtained. Plagiarism is strictly forbidden, and by submitting the article for publication the authors agree that the publishers have the legal right to take appropriate action against the authors, if plagiarism or fabricated information is discovered. By submitting a manuscript the authors agree that the copyright of their article is transferred to the publishers if and when the article is accepted for publication.
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Affiliation(s)
- Shi-Liang Tu
- Department of Colorectal Surgery, Zhejiang Provincial People\'s Hospital, Affiliated People\'s Hospital of Hangzhou Medical College, Hangzhou, China
| | - Sheng Chen
- Department of Colorectal Surgery, Zhejiang Provincial People\'s Hospital, Affiliated People\'s Hospital of Hangzhou Medical College, Hangzhou, China
| | - Shan Gao
- Department of Colorectal Surgery, Zhejiang Provincial People\'s Hospital, Affiliated People\'s Hospital of Hangzhou Medical College, Hangzhou, China
| | - Quan-Jin Dong
- Department of Colorectal Surgery, Zhejiang Provincial People\'s Hospital, Affiliated People\'s Hospital of Hangzhou Medical College, Hangzhou, China
| | - Zi-Ang Wan
- Department of Colorectal Surgery, Zhejiang Provincial People\'s Hospital, Affiliated People\'s Hospital of Hangzhou Medical College, Hangzhou, China
| | - Rui Chai
- Department of Colorectal Surgery, Zhejiang Provincial People\'s Hospital, Affiliated People\'s Hospital of Hangzhou Medical College, Hangzhou, China
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12
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Deng N, Li H, Li Y, Mo F, Wang M, Li Z, Chen X, Xu J, Chai R, Wang H. Physiological homeostasis alteration and cellular structure damage of Chlorella vulgaris exposed to silver nanoparticles with various microstructural morphologies. Environ Sci Pollut Res Int 2022; 29:26011-26020. [PMID: 35254620 DOI: 10.1007/s11356-022-19193-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Accepted: 02/09/2022] [Indexed: 06/14/2023]
Abstract
The toxicity of silver nanoparticles (AgNPs) with a single morphology to aquatic organisms has been well demonstrated in the past decade, but few studies have been carried out to evaluate the differences in toxicity among AgNPs with various microstructural morphologies. In this work, C. vulgaris was used as the tested organism to examine the differences in toxic effects among AgNSs, AgNCs, and AgPLs at concentrations of 0.5, 1.0, 2.0, and 5.0 mg/L. The results showed that the cell density and chlorophyll a content of C. vulgaris decreased when the dose of AgNPs was increased, while the inhibiting effects that were caused by AgPLs were stronger than those that were caused by AgNCs and AgNSs. Under short-term exposure to AgPLs, the ROS content was significantly higher than those under exposure to AgNCs and AgNSs, while the MDA content fluctuated without obvious regularity. The dose of AgPLs affected the antioxidative enzyme activity and lipid peroxidation more obviously than those of AgNSs and AgNCs. The superoxide dismutase and catalase contents in the former case were distinctly higher than those in the latter cases. Consequently, the cell apoptosis rate under exposure to AgPLs reached 83%, which was higher than those under exposure to AgNSs (50%) and AgNCs (71%). This work shows that the level of toxicity to C. vulgaris was in the order of AgPLs > AgNCs > AgNSs. The obtained results demonstrate that the microstructural morphologies of AgNPs determined their potential toxicity.
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Affiliation(s)
- Ningcan Deng
- School of Resources and Civil Engineering, Northeastern University, 3-11 Wenhua Road, Heping District, Shenyang, 110819, China
| | - Haibo Li
- School of Resources and Civil Engineering, Northeastern University, 3-11 Wenhua Road, Heping District, Shenyang, 110819, China.
| | - Yinghua Li
- School of Resources and Civil Engineering, Northeastern University, 3-11 Wenhua Road, Heping District, Shenyang, 110819, China.
| | - Fan Mo
- School of Resources and Civil Engineering, Northeastern University, 3-11 Wenhua Road, Heping District, Shenyang, 110819, China
| | - Mingshuai Wang
- School of Resources and Civil Engineering, Northeastern University, 3-11 Wenhua Road, Heping District, Shenyang, 110819, China
| | - Zhe Li
- School of Resources and Civil Engineering, Northeastern University, 3-11 Wenhua Road, Heping District, Shenyang, 110819, China
| | - Xi Chen
- School of Resources and Civil Engineering, Northeastern University, 3-11 Wenhua Road, Heping District, Shenyang, 110819, China
| | - Jianing Xu
- School of Resources and Civil Engineering, Northeastern University, 3-11 Wenhua Road, Heping District, Shenyang, 110819, China
| | - Rui Chai
- School of Resources and Civil Engineering, Northeastern University, 3-11 Wenhua Road, Heping District, Shenyang, 110819, China
| | - Hongxuan Wang
- School of Resources and Civil Engineering, Northeastern University, 3-11 Wenhua Road, Heping District, Shenyang, 110819, China
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Wang J, Chai R, Fang X, Gu J, Xu W, Chen Q, Chen G, Zhu S, Jin Y. <em>In Situ</em> Hybridization Combined with Immunohistochemistry in Cryosectioned Zebrafish Embryos. J Vis Exp 2022. [DOI: 10.3791/63715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
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Zhang W, Chai R. Bergenin Alleviates Oxidative Stress and Apoptosis of Cardiomyocytes Induced by Oxygen-Glucose Deprivation Via Activating SIRT1/FOXO3a/MnSOD Pathway. CURR TOP NUTRACEUT R 2022. [DOI: 10.37290/ctnr2641-452x.20:447-453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
We have explored the effects of bergenin on oxidative stress and apoptosis of H9c2 cells induced by oxygen-glucose deprivation as an experimental model of acute myocardial infarction. The results of our studies show a significant decrease in cell viability in a time-dependent manner by oxygen-glucose deprivation. Bergenin attenuated the effect of oxygenglucose deprivation in a dose-dependent fashion by decreasing reactive oxygen species generation and malondialdehyde level and increasing superoxide dismutase level. Additionally, results from flow cytometry and western blot revealed that bergenin attenuated oxygen-glucose-deprivation-induced cell apoptosis by activating SIRT1/FOXO3a/MnSOD pathway. These observations may offer a potential for bergenin as novel therapeutics for acute myocardial infarction treatment.
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Affiliation(s)
- Wangqiang Zhang
- Department of Internal Medicine-Cardiovascular, The First Affiliated Hospital of Shihezi University Medical College, Shihezi, Xinjiang Uygur Autonomous Region, 832008, China
| | - Rui Chai
- Department of Internal Medicine-Cardiovascular, The First Affiliated Hospital of Shihezi University Medical College, Shihezi, Xinjiang Uygur Autonomous Region, 832008, China
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15
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Chai R, Fan Y, Zhao J, He F, Han Y. P02.19 Prognostic Nomogram for Advanced Non-Small Cell Lung Cancer Patients Treated With Anti-PD-1 Inhibitors. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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16
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Shen Y, Ji R, Chai R, Yuan N, Zhang J, Jing Y, Yang M, Zhang L, Hong Y, Lin J, Zhu C. A novel fluorescence immunochromatographic assay strip for the diagnosis of schistosomiasis japonica. Parasit Vectors 2021; 14:8. [PMID: 33407752 PMCID: PMC7788720 DOI: 10.1186/s13071-020-04511-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Accepted: 12/01/2020] [Indexed: 11/18/2022] Open
Abstract
Background Schistosomiasis japonica is a severe zoonosis. Domestic animals are the primary source of infection and play an important role in disease transmission. Surveillance and diagnosis play key roles in schistosomiasis control; however, current techniques for the surveillance and diagnosis of the disease have limitations. In this study, we developed a novel fluorescence immunochromatographic assay (FICA) strip to detect anti-Schistosoma japonicum antibodies in host serum. Methods A FICA strip was developed for the diagnosis of Schistosoma japonicum in domestic animals. Streptococcus protein G (SPG) and soluble egg antigen (SEA) were transferred onto a nitrocellulose (NC) membrane to form the control line (C) and the test line (T), respectively. With fluorescence activity as well as binding activity to multispecies IgG, the recombinant protein rSPG-RFP was expressed and employed as an antibody indicator in the FICA strips. Results The dual gene fusion plasmid was verified by PCR and restriction enzyme digestion. The expressed recombinant protein was 39.72 kDa in size, which was consistent with the predicted molecular weight. The western blot results showed binding activity between rSPG-RFP and IgGs from different hosts. Fluorescence microscopy also showed the fluorescence activity of the protein present. The affinity constant (Ka) values of rSPG-RFP with rabbit, donkey, mouse and goat IgG were 1.9 × 105, 4.1 × 105, 1.7 × 105 and 5.4 × 105, respectively. Moreover, based on the recombinant protein, the test strip for detecting S. japonicum in buffaloes could distinguish positive from negative serum. The lower limit of detection of the FICA strip was 1:10,000. Compared with ELISA, the FICA strips exhibited similar results in the diagnosis of infection in clinical bovine serum samples, with a kappa value of 0.9660 and P < 0.01. The cross-reactivities of the FICA strips with Haemonchus contortus and Schistosoma turkestanicum (30.15% and 91.66%, respectively) were higher than those of ELISA (26.98% and 87.5%, respectively). Conclusions Based on the rSPG-RFP protein that we developed, strip detection can be completed within 15 min. Heightened sensitivity allows the strip to accurately identify schistosome antibodies in serum. In conclusion, this method is convenient, feasible, rapid and effective for detecting S. japonicum.![]()
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Affiliation(s)
- Yuanxi Shen
- Key Laboratory of Animal Parasitology, Ministry of Agriculture of China, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China
| | - Rongyi Ji
- Key Laboratory of Animal Parasitology, Ministry of Agriculture of China, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China
| | - Rui Chai
- Key Laboratory of Animal Parasitology, Ministry of Agriculture of China, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China
| | - Nana Yuan
- Key Laboratory of Animal Parasitology, Ministry of Agriculture of China, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China
| | - Jiyue Zhang
- Key Laboratory of Animal Parasitology, Ministry of Agriculture of China, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China
| | - Yi Jing
- Key Laboratory of Animal Parasitology, Ministry of Agriculture of China, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China
| | - Man Yang
- Key Laboratory of Animal Parasitology, Ministry of Agriculture of China, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China
| | - Lanqi Zhang
- Key Laboratory of Animal Parasitology, Ministry of Agriculture of China, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China.,University of Reading, Whiteknights, Reading, Berkshire, RG26UA, England
| | - Yang Hong
- Key Laboratory of Animal Parasitology, Ministry of Agriculture of China, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China
| | - Jiaojiao Lin
- Key Laboratory of Animal Parasitology, Ministry of Agriculture of China, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, China
| | - Chuangang Zhu
- Key Laboratory of Animal Parasitology, Ministry of Agriculture of China, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China.
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Xing L, Cai Y, Yang T, Yu W, Gao M, Chai R, Ding S, Wei J, Pan J, Chen G. Epitranscriptomic m6A regulation following spinal cord injury. J Neurosci Res 2020; 99:843-857. [PMID: 33271625 DOI: 10.1002/jnr.24763] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 11/02/2020] [Accepted: 11/04/2020] [Indexed: 12/11/2022]
Abstract
RNA methylation is involved in multiple physiological and pathological processes. However, the role of RNA methylation in spinal cord regeneration has not been reported. In this study, we find an altered m6A (N6-methyladenosine) RNA methylation profiling following zebrafish spinal cord injury (SCI), in line with an altered transcription level of the m6A methylase Mettl3. Interestingly, many of the differential m6A-tagged genes associated with neural regeneration are hypomethylated, but their transcription levels are upregulated in SCI. Moreover, we find that METTL3 may be important for spinal cord regeneration. We also show a conserved feature of METTL3 changes in mouse SCI model, in which the expression of METTL3 is increased in both astrocytes and neural stem cells. Together, our results indicate that m6A RNA methylation is dynamic and conserved following SCI and may contribute to spinal cord regeneration.
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Affiliation(s)
- Lingyan Xing
- Key Laboratory of Neuroregeneration of Jiangsu and the Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, China
| | - Yunyun Cai
- Department of Physiology, School of medicine, Nantong University, Nantong, China
| | - Tuo Yang
- Department of Hand Surgery, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Weiwei Yu
- Key Laboratory of Neuroregeneration of Jiangsu and the Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, China
| | - Mengdie Gao
- Key Laboratory of Neuroregeneration of Jiangsu and the Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, China
| | - Rui Chai
- Key Laboratory of Neuroregeneration of Jiangsu and the Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, China
| | - Sujun Ding
- Department of Medical Ultrasound, Affiliated Hospital of Nantong University, Nantong, China
| | - Jinhuan Wei
- Basic Medical Research Center, School of Medicine, Nantong University, Nantong, China
| | - Jingying Pan
- Department of Tissue and Embryology, Medical School of Nantong University, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, China
| | - Gang Chen
- Department of Tissue and Embryology, Medical School of Nantong University, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, China.,Department of Anesthesiology, Affiliated Hospital of Nantong University, Nantong, China
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18
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Cai Y, Xing L, Yang T, Chai R, Wang J, Bao J, Shen W, Ding S, Chen G. The neurodevelopmental role of dopaminergic signaling in neurological disorders. Neurosci Lett 2020; 741:135540. [PMID: 33278505 DOI: 10.1016/j.neulet.2020.135540] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 11/10/2020] [Accepted: 11/27/2020] [Indexed: 12/11/2022]
Abstract
Dopamine (DA), a critical neurotransmitter of both the central and peripheral nerve system, plays important roles in a series of biological processes. Dysfunction of dopaminergic signalling may lead to a series of developmental disorders, including attention deficit/hyperactivity disorder, autism and schizophrenia. However, the exact roles of dopaminergic signalling in these diseases are far from fully understood. We analyse the roles of dopaminergic signalling in multiple physiological and pathological processes, focusing on brain development and related disorders. By summarizing current research in this area, we provide guidance for future studies. This review seeks to deepen our understanding of dopaminergic signalling in developmental disorders, which may offer clues for developing more effective therapeutic drugs.
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Affiliation(s)
- Yunyun Cai
- Department of Physiology, School of Medicine, Nantong University, Nantong, Jiangsu Province, 226001, China
| | - Lingyan Xing
- Key Laboratory of Neuroregeneration of Jiangsu and the Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu Province, 226001, China
| | - Tuo Yang
- Department of Hand Surgery, China-Japan Union Hospital of Jilin University, Changchun, Jilin Province, 130033, China
| | - Rui Chai
- Key Laboratory of Neuroregeneration of Jiangsu and the Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu Province, 226001, China
| | - Jiaqi Wang
- Department of Physiology, School of Medicine, Nantong University, Nantong, Jiangsu Province, 226001, China
| | - Jingyin Bao
- Basic Medical Research Centre, Medical College of Nantong University, Nantong, Jiangsu Province, 226001, China
| | - Weixing Shen
- Department of Physiology, School of Medicine, Nantong University, Nantong, Jiangsu Province, 226001, China.
| | - Sujun Ding
- Department of Ultrasound, Affiliated Hospital of Nantong University, Nantong, Jiangsu Province, 226001, China.
| | - Gang Chen
- Department of Tissue and Embryology, Medical School of Nantong University, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu Province, 226001, China; Department of Anesthesiology, Affiliated Hospital of Nantong University, Nantong, Jiangsu Province, 226001, China.
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19
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Tu Y, Han J, Dong Q, Chai R, Li N, Lu Q, Xiao Z, Guo Y, Wan Z, Xu Q. TGF-β2 is a Prognostic Biomarker Correlated with Immune Cell Infiltration in Colorectal Cancer: A STROBE-compliant article. Medicine (Baltimore) 2020; 99:e23024. [PMID: 33181667 PMCID: PMC7668458 DOI: 10.1097/md.0000000000023024] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Transforming growth factor-beta (TGF-β2) is an important cytokine regulating immune cell function. However, whether TGF-β2 controls the invasion of colorectal cancer (CRC) by immune cells is unknown. Therefore, we evaluated the expression of TGF-β2 using multiple databases and determined the relationship between TGF-β2 expression and tumor immune infiltration defined by a set of genetic markers. The analysis demonstrated that the expression of TGF-β2 is closely related to the outcome of many cancers, and this correlation was particularly strong in CRC. In addition, the increased expression of TGF-β2 was significantly associated with the expression of various markers of specific immune cell subpopulations, and overexpression of TGF-β2 was closely related to the prognosis of colon cancer patients. Moreover, TGF-β2 was related to the prognosis and infiltration of the tumor by immune cells in CRC patients. The obtained results indicate that TGF-β2 is a critical factor regulating the recruitment of immune cells and controls their infiltration into colorectal tumors. Thus, high expression of TGF-β2 not only facilitates the prognosis in CRC patients, but also may provide a new target for the treatment of CRC.
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Affiliation(s)
- Yifeng Tu
- Department of Pathology, College of Basic Medical, Sciences, Shenyang Medical College, Shenyang, Liaoning
| | - Junjun Han
- Graduate Department, BengBu Medical College, Bengbu, Anhui
| | - Quanjin Dong
- Department of Colorectal Surgery, Zhejiang Provincial People's Hospital (People's Hospital of Hangzhou Medica College), Hangzhou, Zhejiang
| | - Rui Chai
- Department of Colorectal Surgery, Zhejiang Provincial People's Hospital (People's Hospital of Hangzhou Medica College), Hangzhou, Zhejiang
| | - Na Li
- The Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Zhejiang Provincial People's
| | - Qiliang Lu
- Medical Department, Qingdao University, Qingdao, Shandong 266071, P.R. China
| | - Zunqiang Xiao
- The Second Clinical Medical Department, Zhejiang Chinese Medical University
| | - Yang Guo
- Department of Colorectal Surgery, Zhejiang Provincial People's Hospital People's Hospital of Hangzhou Medical College), Hangzhou, Zhejiang
| | - Ziang Wan
- Zhejiang Provincial People's Hospital
| | - Qiuran Xu
- The Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Zhejiang Provincial People's
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Mo F, Li H, Li Y, Cui W, Wang M, Li Z, Chai R, Wang H. Toxicity of Ag + on microstructure, biochemical activities and genic material of Trifolium pratense L. seedlings with special reference to phytoremediation. Ecotoxicol Environ Saf 2020; 195:110499. [PMID: 32208213 DOI: 10.1016/j.ecoenv.2020.110499] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Revised: 02/16/2020] [Accepted: 03/16/2020] [Indexed: 06/10/2023]
Abstract
The objective of this research was to evaluate Ag+ toxicity in Trifolium pratense L. seedlings subjected to increasing doses of Ag+ by determining photosynthetic pigment and malondialdehyde (MDA) contents, microstructure and hereditary substance alterations, changes in activities of antioxidase-superoxide dismutase (SOD), peroxidase (POD) and catalase (CAT) as well as the content of total Ag absorbed in vivo with evaluation of root growth. Doses of approximately 80 mg L-1 Ag+ severely affected photosynthetic efficiency in Trifolium pratense L. seedlings promoted by damages in photosynthetic apparatus evidenced by downward trend in photosynthetic pigment contents and obvious chlorosis. Alterations in enzymatic activity, lipid peroxidation, genic material damage and the presence of Ag+in vivo had impacted on photosynthetic machinery as well. A hormesis effect was observed at 60 mg L-1 Ag+ for the photosynthetic pigments and antioxidase for Trifolium pratense L. seedlings. Tissue changes (i.e., roots, stems and leaves) observed in fluorescence microscope with obvious chlorosis, roots blackening and formation of agglomerated black particles, were related to the lesion promoted by excessive ROS in vivo. Asynchronous change of antioxidase activity corresponded to the alteration in the MDA content, indicating the synchronization in the elimination of ROS. The changes occurred in RAPD profiles of treated samples following Ag+ toxicity containing loss of normal bands, appearance of new bands and variation in band intensity compared to the normal plants with a dose-dependent effect. On average, the roots of Trifolium pratense L. immobilized 92.20% of the total Ag absorbed as a metal exclusion response. Root growth was significantly sensitive to Ag+ stress with obvious hormesis, which corresponded to the changes in Ag uptake, demonstrating the functional alterations in plants. To sum up, we suggest that modulating the genotype of Trifolium pratense L. seedlings to bear higher proportion of pollutants is conducive to contamination site treatment.
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Affiliation(s)
- Fan Mo
- School of Resources and Civil Engineering, Northeastern University, 11 Wenhua Road, Heping District, Shenyang, 110819, China.
| | - Haibo Li
- School of Resources and Civil Engineering, Northeastern University, 11 Wenhua Road, Heping District, Shenyang, 110819, China.
| | - Yinghua Li
- School of Resources and Civil Engineering, Northeastern University, 11 Wenhua Road, Heping District, Shenyang, 110819, China.
| | - Weina Cui
- Institute of Applied Ecology, Chinese Academy of Sciences Shenyang Branch, Shenyang, 110819, China.
| | - Mingshuai Wang
- School of Resources and Civil Engineering, Northeastern University, 11 Wenhua Road, Heping District, Shenyang, 110819, China.
| | - Zhe Li
- School of Resources and Civil Engineering, Northeastern University, 11 Wenhua Road, Heping District, Shenyang, 110819, China; School of Resources and Civil Engineering, Northeastern University, 11 Wenhua Road, Heping District, Shenyang, 110819, China.
| | - Rui Chai
- School of Resources and Civil Engineering, Northeastern University, 11 Wenhua Road, Heping District, Shenyang, 110819, China.
| | - Hongxuan Wang
- School of Resources and Civil Engineering, Northeastern University, 11 Wenhua Road, Heping District, Shenyang, 110819, China.
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Wang M, Li H, Li Y, Mo F, Li Z, Chai R, Wang H. Dispersibility and Size Control of Silver Nanoparticles with Anti-Algal Potential Based on Coupling Effects of Polyvinylpyrrolidone and Sodium Tripolyphosphate. Nanomaterials (Basel) 2020; 10:nano10061042. [PMID: 32485998 PMCID: PMC7352764 DOI: 10.3390/nano10061042] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 05/27/2020] [Accepted: 05/27/2020] [Indexed: 11/16/2022]
Abstract
In nearly all the cases of biotoxicity studies of silver nanoparticles (AgNPs), AgNPs used often have general dispersibility and wide size distribution, which may inevitably generate imprecise results. Herein, a kind of synthesis method by coupling effects of polyvinylpyrrolidone (PVP) and sodium tripolyphosphate (STPP) was proposed, in order to prepare AgNPs with better dispersibility and a stable size. Based on this, the preparation mechanism of AgNPs and the potential anti-algae toxicity were analyzed. UV-vis analysis showed that the particle size distribution of AgNPs prepared by co-protective agents was more uniform. X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), and energy dispersive X-ray (EDX) were used to confirm that the obtained nano silver was of a high purity and stable size (~30 nm in diameter). Zeta potential and Fourier transform infrared spectroscopy (FTIR) analysis results indicated the synthesis mechanism of AgNPs by co-protective agents, more precisely, PVP limited the polynegative effect and prevented the linear induction of P3O105- produced by STPP during the growth of silver nuclei. Subsequently, Chlorella and Scenedesmus obliquus were utilized to test the toxicity of AgNPs, confirming that AgNPs synthesized through co-protective agents have potential inhibitory ability on algae, but not severe. This study provides a basic theory for the induction of synthetic AgNPs by various factors in the natural environment and a scientific reference for the environmental risk assessment.
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Han J, Wang G, Liu M, Chai R, Guo J, Zhang F, Lu C, Zhang Y, Wang H, Zhang R. Effects of quetiapine on behavioral changes and expression of myelin proteins in a chronic alcohol dependence rat model. Behav Brain Res 2020; 385:112561. [PMID: 32070690 DOI: 10.1016/j.bbr.2020.112561] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 01/23/2020] [Accepted: 02/14/2020] [Indexed: 11/16/2022]
Abstract
BACKGROUND As an atypical antipsychotic drug, quetiapine had been approved for bipolar disorder and for adjunctive therapy in major depressive disorder and schizophrenia. Recently quetiapine has been suggested to be a promising pharmacotherapy for alcohol dependence. This study was performed to determine the effects of quetiapine in rats chronically exposed to ethanol. METHODS Rats were exposed to ethanol solution (10 %; v/v) for 6 weeks. Saline or one of three doses of quetiapine (10, 20 or 40 mg/kg/day) was given by oral gavage while ethanol exposure for the next 14 weeks. Performance of learning and memory and withdrawal signs were evaluated. Then immunohistochemistry, western blot, quantitative real-time-PCR and transmission electron microscopy were performed to determine the effects of quetiapine on alterations of brain white matter markers (myelin basic protein, MBP; proteolipid protein, PLP) and morphology caused by chronic ethanol exposure. RESULTS Quetiapine treatment significantly alleviated withdrawal signs in the ethanol exposed rats. Chronic ethanol exposure reduced Y-type electric maze scores and the protein/mRNA expression levels of MBP and PLP in the prefrontal cortex and hippocampus, and these effects were reversed by quetiapine treatment. Similar ultrastructure morphological changes were observed. CONCLUSIONS Chronic quetiapine treatment alleviated the damage induced by chronic ethanol exposure with regard to learning and memory ability and to brain white matter. Thus, quetiapine appears to be a potentially promising pharmacotherapy for the treatment of alcohol use disorder.
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Affiliation(s)
- Jinhong Han
- Henan Key Laboratory of Biological Psychiatry, The Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan, PR China; Department of Basic Medicine, Xinxiang Medical University, Xinxiang, Henan, PR China
| | - Guodong Wang
- Department of Nursing, Xinxiang Medical University, Xinxiang, Henan, PR China
| | - Meng Liu
- Henan Key Laboratory of Biological Psychiatry, The Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan, PR China
| | - Rui Chai
- Henan Key Laboratory of Biological Psychiatry, The Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan, PR China
| | - Jiawei Guo
- Henan Key Laboratory of Biological Psychiatry, The Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan, PR China
| | - Feng Zhang
- Henan Key Laboratory of Biological Psychiatry, The Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan, PR China
| | - Chengbiao Lu
- Department of Basic Medicine, Xinxiang Medical University, Xinxiang, Henan, PR China
| | - Yanjie Zhang
- Henan Key Laboratory of Biological Psychiatry, The Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan, PR China
| | - Huiying Wang
- Henan Key Laboratory of Biological Psychiatry, The Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan, PR China.
| | - Ruiling Zhang
- Henan Key Laboratory of Biological Psychiatry, The Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan, PR China.
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Miles B, Posner M, Teng M, Yao M, Chai R, Misiukiewicz K, Gupta V, Bakst R, Sharma S, Zhang D, Ye F, Westra W, Kim-Schulze S, Sobotka S, Sikora A, Som P, Genden E. De-Escalated Adjuvant Therapy after Transoral Robotic Surgery for HPV related Oropharyngeal Carcinoma: The SiRS Trial. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2019.11.341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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24
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Wang K, Gong H, Chai R, Yuan H, Chen Y, Liu J. Retraction notice to "Aberrant frequency of IL-35 producing B cells in colorectal cancer patients" [Cytokine 102 (2018) 206-210]. Cytokine 2020; 129:154982. [PMID: 32200949 DOI: 10.1016/j.cyto.2019.154982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Ke Wang
- Department of Gastroenterology, The First Affiliated Hospital of Zhengzhou University, No. 1, East Jianshe Road, Zhengzhou 450052, China; Department of Clinical Laboratory, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310004, China
| | - Hui Gong
- Department of Central Laboratory, Shenzhen Nanshan People's Hospital/Affiliated Shenzhen Sixth Hospital of Guangdong Medical University, 86 Taoyuan Road, Shenzhen, Guangdong 518052, China
| | - Rui Chai
- Department of Colorectal Surgery, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310004, China
| | - Hang Yuan
- Department of Colorectal Surgery, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310004, China
| | - Yanxia Chen
- Department of Rheumatology, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310004, China.
| | - Jinlin Liu
- Department of Clinical Laboratory, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310004, China; Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, 310014 Hangzhou, China.
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25
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Affiliation(s)
- Xiaoqing Yu
- Data Science and Technology, North University of China, Taiyuan, Shanxi, China
| | | | - Rui Chai
- Data Science and Technology, North University of China, Taiyuan, Shanxi, China
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Wan Z, Chai R, Yuan H, Chen B, Dong Q, Zheng B, Mou X, Pan W, Tu Y, Yang Q, Tu S, Hu X. MEIS2 promotes cell migration and invasion in colorectal cancer. Oncol Rep 2019; 42:213-223. [PMID: 31115559 PMCID: PMC6549210 DOI: 10.3892/or.2019.7161] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Accepted: 03/18/2019] [Indexed: 12/11/2022] Open
Abstract
Colorectal cancer (CRC) is one of the most common types of malignancy worldwide. Distant metastasis is a key cause of CRC-associated mortality. MEIS2 has been identified to be dysregulated in several types of human cancer. However, the mechanisms underlying the regulatory role of MEIS2 in CRC metastasis remain largely unknown. For the first time, the present study demonstrated that MEIS2 serves a role as a promoter of metastasis in CRC. In vivo and in vitro experiments revealed that knockdown of MEIS2 significantly suppressed CRC migration, invasion and the epithelial-mesenchymal transition. Furthermore, microarray and bioinformatics analyses were performed to investigate the underlying mechanisms of MEIS2 in the regulation of CRC metastasis. Additionally, it was identified that a high expression of MEIS2 was significantly associated with a shorter overall survival time for patients with CRC. The present study demonstrated that MEIS2 may serve as a novel biomarker for CRC.
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Affiliation(s)
- Ziang Wan
- Department of Colorectal Surgery, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang 310014, P.R. China
| | - Rui Chai
- Department of Colorectal Surgery, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang 310014, P.R. China
| | - Hang Yuan
- Department of Colorectal Surgery, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang 310014, P.R. China
| | - Bingchen Chen
- Department of Colorectal Surgery, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang 310014, P.R. China
| | - Quanjin Dong
- Department of Colorectal Surgery, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang 310014, P.R. China
| | - Boan Zheng
- Department of Colorectal Surgery, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang 310014, P.R. China
| | - Xiaozhou Mou
- Clinical Research Institute, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang 310014, P.R. China
| | - Wensheng Pan
- Department of Gastroenterology, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang 310014, P.R. China
| | - Yifeng Tu
- Department of Pathology, College of Basic Medical Sciences, Shenyang Medical College, Shenyang, Liaoning 110034, P.R. China
| | - Qing Yang
- Department of Academy of Life Sciences, Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310053, P.R. China
| | - Shiliang Tu
- Department of Colorectal Surgery, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang 310014, P.R. China
| | - Xinye Hu
- Department of Colorectal Surgery, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang 310014, P.R. China
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Wang K, Gong H, Chai R, Yuan H, Chen Y, Liu J. RETRACTED: Aberrant frequency of IL-35 producing B cells in colorectal cancer patients. Cytokine 2019; 102:206-210. [PMID: 29054723 DOI: 10.1016/j.cyto.2017.10.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 09/24/2017] [Accepted: 10/11/2017] [Indexed: 02/07/2023]
Abstract
This article has been retracted: please see Elsevier Policy on Article Withdrawal (https://www.elsevier.com/about/our-business/policies/article-withdrawal).
This article has been retracted at the request of the authors. Due to a dispute about the authenticity of the data reported in Figure 1B, the authors have decided to retract this article. The authors would like to apologize for any inconvenience caused.
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Affiliation(s)
- Ke Wang
- Department of Gastroenterology, The First Affiliated Hospital of Zhengzhou University, No. 1, East Jianshe Road, Zhengzhou450052, China; Department of Clinical Laboratory, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou310004, China
| | - Hui Gong
- Department of Central Laboratory, Shenzhen Nanshan People's Hospital/Affiliated Shenzhen Sixth Hospital of Guangdong Medical University, 86 Taoyuan Road, Shenzhen, Guangdong518052, China
| | - Rui Chai
- Department of Colorectal Surgery, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou310004, China
| | - Hang Yuan
- Department of Colorectal Surgery, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou310004, China
| | - Yanxia Chen
- Department of Rheumatology, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou310004, China.
| | - Jinlin Liu
- Department of Clinical Laboratory, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou310004, China; Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, 310014Hangzhou, China.
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Stephenson RM, Chai R, Eager D. Isometric Finger Pose Recognition with Sparse Channel SpatioTemporal EMG Imaging. Annu Int Conf IEEE Eng Med Biol Soc 2018; 2018:5232-5235. [PMID: 30441518 DOI: 10.1109/embc.2018.8513445] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
High fidelity myoelectric control of prostheses and orthoses isparamount to restoring lost function to amputees and neuro-muscular disease sufferers. In this study we prove that patio-temporal imaging can be used to allow convolutional neural networks to classify sparse channel EMG samples from a consumer-grade device with over 94 % accuracy. 10,572 images are generated from 960 samples of simple and complex isometric finger poses recorded from 4 fully intact subjects. Real-time classification of 12 poses is achieved with a 250ms continuous overlapping window.
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Zhang S, Chai R, Yang YY, Guo SQ, Wang S, Guo T, Xu SF, Zhang YH, Wang ZY, Guo C. Chronic diabetic states worsen Alzheimer neuropathology and cognitive deficits accompanying disruption of calcium signaling in leptin-deficient APP/PS1 mice. Oncotarget 2018; 8:43617-43634. [PMID: 28467789 PMCID: PMC5546429 DOI: 10.18632/oncotarget.17116] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Accepted: 04/03/2017] [Indexed: 02/06/2023] Open
Abstract
The coincidences between Alzheimer’s disease (AD) and type 2 diabetes mellitus (T2DM) are so compelling that it is attractive to speculate that diabetic conditions might aggravate AD pathologies by calcium dysfunction, although the understanding of the molecular mechanisms involved remains elusive. The present work was undertaken to investigate whether calcium dyshomeostasis is associated with the exacerbated Alzheimer-like cognitive dysfunction observed in diabetic conditions in APP/PS1-ob/ob mice, which were generated by crossing ob/ob mice with APP/PS1 mice. We confirmed that the diabetic condition can aggravate not only Aβ deposition but also tau phosphorylation, synaptic loss, neuronal death, and inflammation, exacerbating cognitive impairment in AD mice. More importantly, we found that the diabetic condition dramatically elevated calcium levels in APP/PS1 mice, thereby stimulating the phosphorylation of the calcium-dependent kinases. Our findings suggest that controlling over-elevation of intracellular calcium may provide novel insights for approaching AD in diabetic patients and delaying AD progression.
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Affiliation(s)
- Shuai Zhang
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Rui Chai
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Ying-Ying Yang
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Shi-Qi Guo
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Shan Wang
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Tian Guo
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Shuang-Feng Xu
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Yan-Hui Zhang
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Zhan-You Wang
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Chuang Guo
- College of Life and Health Sciences, Northeastern University, Shenyang, China
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Guo C, Yang ZH, Zhang S, Chai R, Xue H, Zhang YH, Li JY, Wang ZY. Intranasal Lactoferrin Enhances α-Secretase-Dependent Amyloid Precursor Protein Processing via the ERK1/2-CREB and HIF-1α Pathways in an Alzheimer's Disease Mouse Model. Neuropsychopharmacology 2017; 42:2504-2515. [PMID: 28079060 PMCID: PMC5686501 DOI: 10.1038/npp.2017.8] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Revised: 01/03/2017] [Accepted: 01/07/2017] [Indexed: 02/07/2023]
Abstract
Growing evidence suggests that lactoferrin (Lf), an iron-binding glycoprotein, is a pleiotropic functional nutrient. In addition, Lf was recently implicated as a neuroprotective agent. These properties make Lf a valuable therapeutic candidate for the treatment of Alzheimer's disease (AD). However, the mechanisms regulating the physiological roles of Lf in the pathologic condition of AD remain unknown. In the present study, an APPswe/PS1DE9 transgenic mouse model of AD was used. We explored whether intranasal human Lf (hLf) administration could reduce β-amyloid (Aβ) deposition and ameliorate cognitive decline in this AD model. We found that hLf promoted the non-amyloidogenic metabolism of amyloid precursor protein (APP) processing through activation of α-secretase a-disintegrin and metalloprotease10 (ADAM10), resulting in enhanced cleavage of the α-COOH-terminal fragment of APP and the corresponding elevation of the NH2-terminal APP product, soluble APP-α (sAPPα), which consequently reduced Aβ generation and improved spatial cognitive learning ability in AD mice. To gain insight into the molecular mechanism by which Lf modulates APP processing, we evaluated the involvement of the critical molecules for APP cleavage and the signaling pathways in N2a cells stably transfected with Swedish mutant human APP (APPsw N2a cells). The results show that the ERK1/2-CREB and HIF-1α signaling pathways were activated by hLf treatment, which is responsible for the expression of induced ADAM10. Additional tests were performed before suggesting the potential use of hLf as an antioxidant and anti-inflammatory. These findings provide new insights into the sources and mechanisms by which hLf inhibits the cognitive decline that occurs in AD via activation of ADAM10 expression in an ERK1/2-CREB and HIF-1α-dependent manner.
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Affiliation(s)
- Chuang Guo
- Institute of Neuroscience, College of Life and Health Sciences, Northeastern University, Shenyang, China,College of Life and Health Sciences, Northeastern University, Shenyang 110819, China, Tel/Fax: +86 24 22529997, E-mail: or
| | - Zhao-Hui Yang
- Institute of Neuroscience, College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Shuai Zhang
- Institute of Neuroscience, College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Rui Chai
- Institute of Neuroscience, College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Han Xue
- Institute of Neuroscience, College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Yan-Hui Zhang
- Institute of Neuroscience, College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Jia-Yi Li
- Institute of Neuroscience, College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Zhan-You Wang
- Institute of Neuroscience, College of Life and Health Sciences, Northeastern University, Shenyang, China,College of Life and Health Sciences, Northeastern University, Shenyang 110819, China, Tel/Fax: +86 24 22529997, E-mail: or
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Fei BY, He X, Ma J, Zhang M, Chai R. FoxM1 is associated with metastasis in colorectal cancer through induction of the epithelial-mesenchymal transition. Oncol Lett 2017; 14:6553-6561. [PMID: 29163688 PMCID: PMC5686434 DOI: 10.3892/ol.2017.7022] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2015] [Accepted: 02/03/2017] [Indexed: 01/28/2023] Open
Abstract
The aim of the present study was to investigate the role of forkhead box M1 (FoxM1) in epithelial-mesenchymal transition (EMT) and metastasis in colorectal cancer (CRC). Immunohistochemical assays were performed to detect FoxM1 and epithelial (E-) cadherin protein expression in 92 CRC, 61 colonic adenoma and 32 wild-type colonic tissue samples. Quantitative polymerase chain reaction (qPCR) assays were performed to determine the expression levels of FoxM1 and E-cadherin mRNAs in 30 CRC and adjacent normal mucosal tissues. RNA interference was used to knock down endogenous FoxM1 expression in CRC cell lines, and the migratory and invasive capacity of the CRC cells was analyzed. The expression of FoxM1, E-cadherin and neuronal (N-) cadherin in the CRC cell lines was evaluated using qPCR and Western blot analysis. The relative expression levels of FoxM1 mRNA and protein were significantly increased in the CRC tissues compared with those in the colonic adenoma and wild-type mucosal tissue samples (P<0.01). In contrast, the relative expression levels of E-cadherin mRNA and protein were significantly decreased in the CRC tissues compared with in the colonic adenoma and normal mucosal tissues (P<0.01). FoxM1 overexpression and decreased E-cadherin expression were significantly associated with poor colonic tissue differentiation, lymph node metastasis and an advanced tumor-node-metastasis stage. Additionally, the increased expression of FoxM1 was associated with a decrease in E-cadherin expression (P<0.01). Furthermore, RNA interference-mediated FoxM1 knockdown significantly inhibited the proliferation, migration and invasion of CRC cells. Downregulation of FoxM1 expression significantly increased E-cadherin expression and decreased N-cadherin expression. The results of the present study suggest that FoxM1 overexpression in tumor tissues is significantly associated with metastasis in CRC through the induction of EMT.
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Affiliation(s)
- Bao-Ying Fei
- Department of Gastroenterology, Tongde Hospital of Zhejiang Province, Hangzhou, Zhejiang 310012, P.R. China
| | - Xujun He
- Key Laboratory of Gastroenterology of Zhejiang, Zhejiang Province People's Hospital, Hangzhou, Zhejiang 310014, P.R. China
| | - Jie Ma
- Department of Pathology, Zhejiang Province People's Hospital, Hangzhou, Zhejiang 310014, P.R. China
| | - Mei Zhang
- Department of Pathology, Zhejiang Province People's Hospital, Hangzhou, Zhejiang 310014, P.R. China
| | - Rui Chai
- Department of Anorectal Surgery, Zhejiang Province People's Hospital, Hangzhou, Zhejiang 310014, P.R. China
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Liu K, Xuekelati S, Zhang Y, Yin Y, Li Y, Chai R, Li X, Peng Y, Wu J, Guo X. Expression levels of atherosclerosis-associated miR-143 and miR-145 in the plasma of patients with hyperhomocysteinaemia. BMC Cardiovasc Disord 2017. [PMID: 28633641 PMCID: PMC5477732 DOI: 10.1186/s12872-017-0596-0] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Background An elevated level of homocysteine (Hcy) in the blood is designated hyperhomocysteinaemia (Hhcy) and is regarded as a strong risk factor for the development of atherosclerosis (ATH), although the association remains controversial. Considered to be essential gene expression regulators, micro-RNAs (miRNAs) modulate cardiovascular disease development and thus can be regarded as potential biomarkers and therapeutic targets in atherosclerosis. The aim of the current study is to investigate the expression levels of atherosclerosis-associated miR-143 and miR-145 in Hhcy patients and predict the progress of atherosclerosis in Hhcy patients. Methods A total of 100 participants were enrolled and included normal control subjects (NC = 20), hyperhomocysteinaemia alone subjects (Hhcy = 25), hyperhomocysteinaemia and carotid artery atherosclerosis combined subjects (Hhcy + ATH = 30) and patients with standalone carotid artery atherosclerosis (ATH = 25). Plasma Hcy, supplementary biochemical parameters and carotid artery ultrasonography (USG) were measured in all participants. MicroRNA expression levels in the peripheral blood were calculated by real-time reverse transcription-polymerase chain reaction (qRT-PCR). The correlations of miR-143 and miR-145 with Hcy, blood lipid parameters and carotid artery atherosclerotic plaques were evaluated using Pearson’s correlation coefficients. Receiver operating characteristic (ROC) curve analyses were performed to evaluate the capacities of miR-143 and miR-145 for the detection of Hhcy and atherosclerosis patients. Results MiR-143 and miR-145 exhibited trends towards significance with stepwise decreases from the NC to Hhcy groups and then to the Hhcy + ATH and ATH groups. Similar results were observed in the carotid artery plaque group (Hhcy + ATH and ATH grups) compared with the no-plaque group (NC and Hhcy groups). The miR-143 expression level exhibited significant negative correlations with Hcy, total cholesterol (TC) and low-density lipoprotein cholesterol (LDL-c). The miR-145 expression level exhibited significant negative correlations with Hcy, TC, triglyceride (TG) and LDL-c. MiR-143 and miR-145 exhibited the greatest area under the curves (AUCs) (0.775 and 0.681, respectively) for the detection of every Hhcy patient, including those in the Hhcy and Hhcy + ATH groups, from among all subjects. Conclusion The results indicated that the levels of atherosclerosis-associated circulating miR-143 and miR-145 are linked to Hhcy. MiR-143 may be used as a potential non-invasive biomarkers of Hhcy and thus may be helpful in predicting the progress of atherosclerosis in Hhcy patients. Electronic supplementary material The online version of this article (doi:10.1186/s12872-017-0596-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Kejian Liu
- Department of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.,Department of Cardiology, the First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, China
| | - Saiyare Xuekelati
- The Key Laboratory of Xinjiang Endemic and Ethnic Diseases, Shihezi University, Shihezi, Xinjiang, 832000, China
| | - Yue Zhang
- The Key Laboratory of Xinjiang Endemic and Ethnic Diseases, Shihezi University, Shihezi, Xinjiang, 832000, China
| | - Yin Yin
- Department of Cardiology, the First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, China
| | - Yue Li
- Department of Cardiology, the First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, China
| | - Rui Chai
- Department of Cardiology, the First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, China
| | - Xinwei Li
- Department of Cardiology, the First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, China
| | - Yi Peng
- Department of Cardiology, the First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, China
| | - Jiangdong Wu
- The Key Laboratory of Xinjiang Endemic and Ethnic Diseases, Shihezi University, Shihezi, Xinjiang, 832000, China.
| | - Xiaomei Guo
- Department of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
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Chai R, Xu LS, Yao Y, Hao LL, Qi L. Comparison of Regression Analysis and Transfer Function in Estimating the Parameters of Central Pulse Waves from Brachial Pulse Wave. Stud Health Technol Inform 2017; 245:573-577. [PMID: 29295160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
This study analyzed ascending branch slope (A_slope), dicrotic notch height (Hn), diastolic area (Ad) and systolic area (As) diastolic blood pressure (DBP), systolic blood pressure (SBP), pulse pressure (PP), subendocardial viability ratio (SEVR), waveform parameter (k), stroke volume (SV), cardiac output (CO), and peripheral resistance (RS) of central pulse wave invasively and non-invasively measured. Invasively measured parameters were compared with parameters measured from brachial pulse waves by regression model and transfer function model. Accuracy of parameters estimated by regression and transfer function model, was compared too. Findings showed that k value, central pulse wave and brachial pulse wave parameters invasively measured, correlated positively. Regression model parameters including A_slope, DBP, SEVR, and transfer function model parameters had good consistency with parameters invasively measured. They had same effect of consistency. SBP, PP, SV, and CO could be calculated through the regression model, but their accuracies were worse than that of transfer function model.
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Affiliation(s)
- Rui Chai
- Sino-Dutch Biomedical and Information Engineering School, Northeastern University, Shenyang, China
| | - Li-Sheng Xu
- Sino-Dutch Biomedical and Information Engineering School, Northeastern University, Shenyang, China
| | - Yang Yao
- Sino-Dutch Biomedical and Information Engineering School, Northeastern University, Shenyang, China
| | - Li-Ling Hao
- Sino-Dutch Biomedical and Information Engineering School, Northeastern University, Shenyang, China
| | - Lin Qi
- Sino-Dutch Biomedical and Information Engineering School, Northeastern University, Shenyang, China
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Chai R, Yu X, Tu S, Zheng B. Depletion of UBA protein 2-like protein inhibits growth and induces apoptosis of human colorectal carcinoma cells. Tumour Biol 2016; 37:13225-13235. [PMID: 27456362 DOI: 10.1007/s13277-016-5159-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Accepted: 07/12/2016] [Indexed: 12/13/2022] Open
Abstract
Ubiquitin-proteasome system regulates cell proliferation, apoptosis, angiogenesis, and motility, which are processes with particular importance for carcinogenesis. UBA protein 2-like protein (UBAP2L) was found to be associated with proteasome; however, its biological function is largely unknown. In this study, the mRNA levels of UBAP2L in human normal and colorectal carcinoma tissues were analyzed using the datasets from the publicly available Oncomine database ( www.oncomine.org ) and found UBAP2L was overexpressed in colorectal carcinoma tissues. Furthermore, we elucidated the role of UBAP2L in human colorectal cancer via an RNA interference lentivirus system in three colorectal carcinoma cell lines HCT116, SW1116, and RKO. Knockdown of UBAP2L led to suppressed cell proliferation and impaired colony formation. UBAP2L depletion in HCT116 and RKO cells also induced cell cycle arrest as well as apoptosis. Moreover, the phosphorylation of PRAS40, Bad, and the cleavage of PARP were remarkably increased after UBAP2L knockdown by Intracellular signaling array and also the activation of P38 was obviously decreased and the cleavage of Caspase 3 and Bax were increased after UBAP2L silencing by western blot assay, indicated that UBAP2L might be involved in the cell growth by the regulation of apoptosis-related proteins. Our findings indicated that UBAP2L may be essential for colorectal carcinoma growth and survival. Lentivirus-mediated small interfering RNA against UBAP2L might serve as a potential therapeutic approach for the treatment of colorectal cancer.
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Affiliation(s)
- Rui Chai
- Department of Colorectal Surgery, Zhejiang Provincial People's Hospital, 158 Shangtang Road, Hangzhou, Zhejiang, 310014, China
| | - Xiaojun Yu
- Department of Gastroenterological Surgery, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang, 310014, China
| | - Shiliang Tu
- Department of Colorectal Surgery, Zhejiang Provincial People's Hospital, 158 Shangtang Road, Hangzhou, Zhejiang, 310014, China
| | - Bo'an Zheng
- Department of Colorectal Surgery, Zhejiang Provincial People's Hospital, 158 Shangtang Road, Hangzhou, Zhejiang, 310014, China.
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35
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Guo C, Zhang S, Li JY, Ding C, Yang ZH, Chai R, Wang X, Wang ZY. Chronic hyperglycemia induced via the heterozygous knockout of Pdx1 worsens neuropathological lesion in an Alzheimer mouse model. Sci Rep 2016; 6:29396. [PMID: 27406855 PMCID: PMC4942607 DOI: 10.1038/srep29396] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Accepted: 06/16/2016] [Indexed: 12/12/2022] Open
Abstract
Compelling evidence has indicated that dysregulated glucose metabolism links Alzheimer’s disease (AD) and diabetes mellitus (DM) via glucose metabolic products. Nevertheless, because of the lack of appropriate animal models, whether chronic hyperglycemia worsens AD pathologies in vivo remains to be confirmed. Here, we crossed diabetic mice (Pdx1+/− mice) with Alzheimer mice (APP/PS1 transgenic mice) to generate Pdx1+/−/APP/PS1. We identified robust increases in tau phosphorylation, the loss of the synaptic spine protein, amyloid-β (Aβ) deposition and plaque formation associated with increased microglial and astrocyte activation proliferation, which lead to exacerbated memory and cognition deficits. More importantly, we also observed increased glucose intolerance accompanied by Pdx1 reduction, the formation of advanced glycation end-products (AGEs), and the activation of the receptor for AGEs (RAGE) signaling pathways during AD progression; these changes are thought to contribute to the processing of Aβ precursor proteins and result in increased Aβ generation and decreased Aβ degradation. Protein glycation, increased oxidative stress and inflammation via hyperglycemia are the primary mechanisms involved in the pathophysiology of AD. These results indicate the pathological relationship between these diseases and provide novel insights suggesting that glycemic control may be beneficial for decreasing the incidence of AD in diabetic patients and delaying AD progression.
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Affiliation(s)
- Chuang Guo
- College of Life and Health Sciences, Northeastern University, Shenyang, 110819, P. R. China
| | - Shuai Zhang
- College of Life and Health Sciences, Northeastern University, Shenyang, 110819, P. R. China
| | - Jia-Yi Li
- College of Life and Health Sciences, Northeastern University, Shenyang, 110819, P. R. China
| | - Chen Ding
- College of Life and Health Sciences, Northeastern University, Shenyang, 110819, P. R. China
| | - Zhao-Hui Yang
- College of Life and Health Sciences, Northeastern University, Shenyang, 110819, P. R. China
| | - Rui Chai
- College of Life and Health Sciences, Northeastern University, Shenyang, 110819, P. R. China
| | - Xu Wang
- Basic Medicine Combined with Chinese Traditional Medicine and Western Medicine, Liaoning University of Traditional Chinese Medicine, Shenyang 110847, P. R. China
| | - Zhan-You Wang
- College of Life and Health Sciences, Northeastern University, Shenyang, 110819, P. R. China.,Department of Endocrinology and Metabolism, Institute of Endocrinology, Liaoning Provincial Key Laboratory of Endocrine Diseases, The First Affiliated Hospital of China Medical University, Shenyang, 110001, P. R. China
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Guo C, Hao LJ, Yang ZH, Chai R, Zhang S, Gu Y, Gao HL, Zhong ML, Wang T, Li JY, Wang ZY. Deferoxamine-mediated up-regulation of HIF-1α prevents dopaminergic neuronal death via the activation of MAPK family proteins in MPTP-treated mice. Exp Neurol 2016; 280:13-23. [PMID: 26996132 DOI: 10.1016/j.expneurol.2016.03.016] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Revised: 01/26/2016] [Accepted: 03/15/2016] [Indexed: 12/24/2022]
Abstract
Accumulating evidence suggests that an abnormal accumulation of iron in the substantia nigra (SN) is one of the defining characteristics of Parkinson's disease (PD). Accordingly, the potential neuroprotection of Fe chelators is widely acknowledged for the treatment of PD. Although desferrioxamine (DFO), an iron chelator widely used in clinical settings, has been reported to improve motor deficits and dopaminergic neuronal survival in animal models of PD, DFO has poor penetration to cross the blood-brain barrier and elicits side effects. We evaluated whether an intranasal administration of DFO improves the 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced degeneration of dopaminergic neurons in the nigrostriatal axis and investigated the molecular mechanisms of intranasal DFO treatment in preventing MPTP-induced neurodegeneration. Treatment with DFO efficiently alleviated behavioral deficits, increased the survival of tyrosine hydroxylase (TH)-positive neurons, and decreased the action of astrocytes in the SN and striatum in an MPTP-induced PD mouse model. Interestingly, we found that DFO up-regulated the expression of HIF-1α protein, TH, vascular endothelial growth factor (VEGF), and growth associated protein 43 (GAP43) and down-regulated the expression of α-synuclein, divalent metal transporter with iron-responsive element (DMT1+IRE), and transferrin receptor (TFR). This was accompanied by a decrease in iron-positive cells in the SN and striatum of the DFO-treated group. We further revealed that DFO treatment significantly inhibited the MPTP-induced phosphorylation of the c-Jun N-terminal kinase (JNK) and differentially enhanced the phosphorylation of extracellular regulated protein kinases (ERK) and mitogen-activated protein kinase (MAPK)/P38 kinase. Additionally, the effects of DFO on increasing the Bcl-2/Bax ratio were further validated in vitro and in vivo. In SH-SY5Y cells, the DFO-mediated up-regulation of HIF-1α occurred via the activation of the ERK and P38MAPK signaling pathway. Collectively, the present data suggest that intranasal DFO treatment is effective in reversing MPTP-induced brain abnormalities and that HIF-1-pathway activation is a potential therapy target for the attenuation of neurodegeneration.
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Affiliation(s)
- Chuang Guo
- Institute of Neuroscience, College of Life and Health Sciences, Northeastern University, Shenyang 110819, PR China
| | - Li-Juan Hao
- Institute of Neuroscience, College of Life and Health Sciences, Northeastern University, Shenyang 110819, PR China
| | - Zhao-Hui Yang
- Institute of Neuroscience, College of Life and Health Sciences, Northeastern University, Shenyang 110819, PR China
| | - Rui Chai
- Institute of Neuroscience, College of Life and Health Sciences, Northeastern University, Shenyang 110819, PR China
| | - Shuai Zhang
- Institute of Neuroscience, College of Life and Health Sciences, Northeastern University, Shenyang 110819, PR China
| | - Yu Gu
- Institute of Neuroscience, College of Life and Health Sciences, Northeastern University, Shenyang 110819, PR China
| | - Hui-Ling Gao
- Institute of Neuroscience, College of Life and Health Sciences, Northeastern University, Shenyang 110819, PR China
| | - Man-Li Zhong
- Institute of Neuroscience, College of Life and Health Sciences, Northeastern University, Shenyang 110819, PR China
| | - Tao Wang
- Institute of Neuroscience, College of Life and Health Sciences, Northeastern University, Shenyang 110819, PR China
| | - Jia-Yi Li
- Institute of Neuroscience, College of Life and Health Sciences, Northeastern University, Shenyang 110819, PR China.
| | - Zhan-You Wang
- Institute of Neuroscience, College of Life and Health Sciences, Northeastern University, Shenyang 110819, PR China.
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Liu L, Chen Y, Qi J, Zhang Y, He Y, Ni W, Li W, Zhang S, Sun S, Taketo MM, Wang L, Chai R, Li H. Wnt activation protects against neomycin-induced hair cell damage in the mouse cochlea. Cell Death Dis 2016; 7:e2136. [PMID: 26962686 PMCID: PMC4823936 DOI: 10.1038/cddis.2016.35] [Citation(s) in RCA: 106] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Revised: 01/11/2016] [Accepted: 01/25/2016] [Indexed: 12/17/2022]
Abstract
Recent studies have reported the role of Wnt/β-catenin signaling in hair cell (HC) development, regeneration, and differentiation in the mouse cochlea; however, the role of Wnt/β-catenin signaling in HC protection remains unknown. In this study, we took advantage of transgenic mice to specifically knockout or overactivate the canonical Wnt signaling mediator β-catenin in HCs, which allowed us to investigate the role of Wnt/β-catenin signaling in protecting HCs against neomycin-induced damage. We first showed that loss of β-catenin in HCs made them more vulnerable to neomycin-induced injury, while constitutive activation of β-catenin in HCs reduced HC loss both in vivo and in vitro. We then showed that loss of β-catenin in HCs increased caspase-mediated apoptosis induced by neomycin injury, while β-catenin overexpression inhibited caspase-mediated apoptosis. Finally, we demonstrated that loss of β-catenin in HCs led to increased expression of forkhead box O3 transcription factor (Foxo3) and Bim along with decreased expression of antioxidant enzymes; thus, there were increased levels of reactive oxygen species (ROS) after neomycin treatment that might be responsible for the increased aminoglycoside sensitivity of HCs. In contrast, β-catenin overexpression reduced Foxo3 and Bim expression and ROS levels, suggesting that β-catenin is protective against neomycin-induced HC loss. Our findings demonstrate that Wnt/β-catenin signaling has an important role in protecting HCs against neomycin-induced HC loss and thus might be a new therapeutic target for the prevention of HC death.
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Affiliation(s)
- L Liu
- Otorhinolaryngology Department of Affiliated Eye and ENT Hospital, State Key Laboratory of Medical Neurobiology, Fudan University, Shanghai, PR China.,Institutes of Biomedical Sciences, Fudan University, Shanghai, PR China
| | - Y Chen
- Otorhinolaryngology Department of Affiliated Eye and ENT Hospital, State Key Laboratory of Medical Neurobiology, Fudan University, Shanghai, PR China.,Laboratory Center, Affiliated Eye and ENT Hospital of Fudan University, Shanghai, PR China.,Key Laboratory of Hearing Medicine of National Health and Family Planning Commission, Shanghai, PR China
| | - J Qi
- Key Laboratory for Developmental Genes and Human Disease, Ministry of Education, Institute of Life Sciences, Southeast University, Nanjing, China.,Co-innovation Center of Neuroregeneration, Nantong University, Nantong, China
| | - Y Zhang
- Otorhinolaryngology Department of Affiliated Eye and ENT Hospital, State Key Laboratory of Medical Neurobiology, Fudan University, Shanghai, PR China.,Laboratory Center, Affiliated Eye and ENT Hospital of Fudan University, Shanghai, PR China.,Key Laboratory of Hearing Medicine of National Health and Family Planning Commission, Shanghai, PR China
| | - Y He
- Otorhinolaryngology Department of Affiliated Eye and ENT Hospital, State Key Laboratory of Medical Neurobiology, Fudan University, Shanghai, PR China.,Laboratory Center, Affiliated Eye and ENT Hospital of Fudan University, Shanghai, PR China.,Key Laboratory of Hearing Medicine of National Health and Family Planning Commission, Shanghai, PR China
| | - W Ni
- Otorhinolaryngology Department of Affiliated Eye and ENT Hospital, State Key Laboratory of Medical Neurobiology, Fudan University, Shanghai, PR China.,Key Laboratory of Hearing Medicine of National Health and Family Planning Commission, Shanghai, PR China
| | - W Li
- Otorhinolaryngology Department of Affiliated Eye and ENT Hospital, State Key Laboratory of Medical Neurobiology, Fudan University, Shanghai, PR China.,Laboratory Center, Affiliated Eye and ENT Hospital of Fudan University, Shanghai, PR China.,Key Laboratory of Hearing Medicine of National Health and Family Planning Commission, Shanghai, PR China
| | - S Zhang
- Key Laboratory for Developmental Genes and Human Disease, Ministry of Education, Institute of Life Sciences, Southeast University, Nanjing, China.,Co-innovation Center of Neuroregeneration, Nantong University, Nantong, China
| | - S Sun
- Otorhinolaryngology Department of Affiliated Eye and ENT Hospital, State Key Laboratory of Medical Neurobiology, Fudan University, Shanghai, PR China.,Laboratory Center, Affiliated Eye and ENT Hospital of Fudan University, Shanghai, PR China.,Key Laboratory of Hearing Medicine of National Health and Family Planning Commission, Shanghai, PR China
| | - M M Taketo
- Department of Pharmacology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - L Wang
- Institutes of Biomedical Sciences, Fudan University, Shanghai, PR China
| | - R Chai
- Key Laboratory for Developmental Genes and Human Disease, Ministry of Education, Institute of Life Sciences, Southeast University, Nanjing, China.,Co-innovation Center of Neuroregeneration, Nantong University, Nantong, China
| | - H Li
- Otorhinolaryngology Department of Affiliated Eye and ENT Hospital, State Key Laboratory of Medical Neurobiology, Fudan University, Shanghai, PR China.,Institutes of Biomedical Sciences, Fudan University, Shanghai, PR China.,Key Laboratory of Hearing Medicine of National Health and Family Planning Commission, Shanghai, PR China
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38
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Cao H, Wang C, Chai R, Dong Q, Tu S. Iron intake, serum iron indices and risk of colorectal adenomas: a meta-analysis of observational studies. Eur J Cancer Care (Engl) 2016; 26. [PMID: 26956572 DOI: 10.1111/ecc.12486] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/15/2016] [Indexed: 11/29/2022]
Affiliation(s)
- H. Cao
- Department of Colorectal Surgery; Zhejiang Provincial People's Hospital; Hangzhou Zhejiang China
| | - C. Wang
- Department of Anus & Intestine surgery; The First People's Hospital of Fuyang District; Hangzhou Zhejiang China
| | - R. Chai
- Department of Colorectal Surgery; Zhejiang Provincial People's Hospital; Hangzhou Zhejiang China
| | - Q. Dong
- Department of Colorectal Surgery; Zhejiang Provincial People's Hospital; Hangzhou Zhejiang China
| | - S. Tu
- Department of Colorectal Surgery; Zhejiang Provincial People's Hospital; Hangzhou Zhejiang China
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39
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Guo C, Zhang YX, Wang T, Zhong ML, Yang ZH, Hao LJ, Chai R, Zhang S. Intranasal deferoxamine attenuates synapse loss via up-regulating the P38/HIF-1α pathway on the brain of APP/PS1 transgenic mice. Front Aging Neurosci 2015; 7:104. [PMID: 26082716 PMCID: PMC4451419 DOI: 10.3389/fnagi.2015.00104] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2015] [Accepted: 05/15/2015] [Indexed: 12/31/2022] Open
Abstract
The widely recognized neuroprotective effect of iron chelators is contributed by their ability to prevent reactive oxygen species (ROS) generation via the Fenton reaction, which sequesters redox-active Fe. An additional neuroprotective mechanism of iron-chelating compounds is to regulate the transcriptional activator hypoxia-inducible factor 1α (HIF-1α). In the present study, we observed that intranasal administration of deferoxamine decreased beta-amyloid (Aβ) deposition and rescued synapse loss in the brain of Aβ precursor protein and presenilin-1 (APP/PS1) double transgenic mice. We found that deferoxamine (DFO) up-regulated HIF-1α mRNA expression and its protein level, and further induced the proteins that are encoded from HIF-1-adaptive genes, including transferrin receptor (TFR), divalent metal transporter 1 (DMT1), and brain-derived neurotrophic factor (BDNF). The effects of DFO on the induction and stabilization of HIF-1α were further confirmed in vitro. This was accompanied by a decrease of Fe in the CA3 region of the hippocampus. Western blotting studies revealed that DFO differentially enhanced the phosphorylation of mitogen-activated protein kinase (MAPK)/P38 kinase in vitro and in vivo. The results suggest that the DFO may up-regulate several HIF-1-dependent neuroprotective-adaptive genes in AD via activating P38/HIF-1α pathway, which may serve as important therapeutic targets to the disease.
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Affiliation(s)
- Chuang Guo
- College of Life and Health Sciences, Northeastern University Shenyang, China
| | - Yu-Xin Zhang
- Department of Anatomy, Hebei United University Tangshan, China
| | - Tao Wang
- College of Life and Health Sciences, Northeastern University Shenyang, China
| | - Man-Li Zhong
- College of Life and Health Sciences, Northeastern University Shenyang, China
| | - Zhao-Hui Yang
- College of Life and Health Sciences, Northeastern University Shenyang, China
| | - Li-Juan Hao
- College of Life and Health Sciences, Northeastern University Shenyang, China
| | - Rui Chai
- College of Life and Health Sciences, Northeastern University Shenyang, China
| | - Shuai Zhang
- College of Life and Health Sciences, Northeastern University Shenyang, China
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40
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Mei H, Sun S, Bai Y, Chen Y, Chai R, Li H. Reduced mtDNA copy number increases the sensitivity of tumor cells to chemotherapeutic drugs. Cell Death Dis 2015; 6:e1710. [PMID: 25837486 PMCID: PMC4650546 DOI: 10.1038/cddis.2015.78] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2014] [Revised: 02/15/2015] [Accepted: 02/18/2015] [Indexed: 11/09/2022]
Abstract
Many cancer drugs are toxic to cells by activating apoptotic pathways. Previous studies have shown that mitochondria have key roles in apoptosis in mammalian cells, but the role of mitochondrial DNA (mtDNA) copy number variation in the pathogenesis of tumor cell apoptosis remains largely unknown. We used the HEp-2, HNE2, and A549 tumor cell lines to explore the relationship between mtDNA copy number variation and cell apoptosis. We first induced apoptosis in three tumor cell lines and one normal adult human skin fibroblast cell line (HSF) with cisplatin (DDP) or doxorubicin (DOX) treatment and found that the mtDNA copy number significantly increased in apoptotic tumor cells, but not in HSF cells. We then downregulated the mtDNA copy number by transfection with shRNA-TFAM plasmids or treatment with ethidium bromide and found that the sensitivity of tumor cells to DDP or DOX was significantly increased. Furthermore, we observed that levels of reactive oxygen species (ROS) increased significantly in tumor cells with lower mtDNA copy numbers, and this might be related to a low level of antioxidant gene expression. Finally, we rescued the increase of ROS in tumor cells with lipoic acid or N-acetyl-L-cysteine and found that the apoptosis rate decreased. Our studies suggest that the increase of mtDNA copy number is a self-protective mechanism of tumor cells to prevent apoptosis and that reduced mtDNA copy number increases ROS levels in tumor cells, increases the tumor cells' sensitivity to chemotherapeutic drugs, and increases the rate of apoptosis. This research provides evidence that mtDNA copy number variation might be a promising new therapeutic target for the clinical treatment of tumors.
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Affiliation(s)
- H Mei
- Department of Otorhinolaryngology, Research Center, Key Laboratory of Hearing Science, Ministry of Health, Affiliated Eye and ENT Hospital, Fudan University, Shanghai 200031, China
| | - S Sun
- Department of Otorhinolaryngology, Research Center, Key Laboratory of Hearing Science, Ministry of Health, Affiliated Eye and ENT Hospital, Fudan University, Shanghai 200031, China
| | - Y Bai
- Department of Otolaryngology, Children's Hospital, Chongqing Medical University, Chongqing 400014, China
| | - Y Chen
- Department of Otorhinolaryngology, Research Center, Key Laboratory of Hearing Science, Ministry of Health, Affiliated Eye and ENT Hospital, Fudan University, Shanghai 200031, China
| | - R Chai
- Co-innovation Center of Neuroregeneration, Key Laboratory for Developmental Genes and Human Disease, Ministry of Education, Institute of Life Sciences, Southeast University, Nanjing 210096, China
| | - H Li
- Department of Otorhinolaryngology, Research Center, Key Laboratory of Hearing Science, Ministry of Health, Affiliated Eye and ENT Hospital, Fudan University, Shanghai 200031, China
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41
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Zheng B, Chai R, Yu X. Downregulation of NIT2 inhibits colon cancer cell proliferation and induces cell cycle arrest through the caspase-3 and PARP pathways. Int J Mol Med 2015; 35:1317-22. [PMID: 25738796 DOI: 10.3892/ijmm.2015.2125] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Accepted: 12/30/2014] [Indexed: 11/05/2022] Open
Abstract
Colorectal cancer, also known as colon cancer is the most devastating malignancy worldwide. Previous studies have reported that Nit2, a member of the nitrilase superfamily, is a potential tumor suppressor, although its function remains elusive in colon cancer. In the present study, we employed an RNA interference lentivirus system to silence endogenous NIT2 expression in the colon cancer cell line, HCT116. The knockdown efficiency was determined by RT-qPCR and western blot analysis. The depletion of NIT2 markedly inhibited colon cancer cell proliferation and colony formation and induced cell cycle arrest in the G0/G1 phase, as shown by MTT assay, colony formation assay and flow cytometric analysis, respectively. Further investigation with an intracellular signaling array demonstrated that the depletion of NIT2 triggered the apoptosis of colon cancer cells through the caspase-3 and poly(ADP-ribose) polymerase (PARP) pathways. Our findings suggest that NIT2 may be an oncogene in human colon cancer and may thus serve as a promising therapeutic target for the treatment of colon cancer.
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Affiliation(s)
- Bo'an Zheng
- Department of Colorectal Surgery, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang 310014, P.R. China
| | - Rui Chai
- Department of Colorectal Surgery, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang 310014, P.R. China
| | - Xiaojun Yu
- Department of Gastroenterological Surgery, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang 310014, P.R. China
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Chen Y, Li L, Ni W, Zhang Y, Sun S, Miao D, Chai R, Li H. Bmi1 regulates auditory hair cell survival by maintaining redox balance. Cell Death Dis 2015; 6:e1605. [PMID: 25611380 PMCID: PMC4669747 DOI: 10.1038/cddis.2014.549] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Revised: 11/13/2014] [Accepted: 11/17/2014] [Indexed: 01/06/2023]
Abstract
Reactive oxygen species (ROS) accumulation are involved in noise- and ototoxic drug-induced hair cell loss, which is the major cause of hearing loss. Bmi1 is a member of the Polycomb protein family and has been reported to regulate mitochondrial function and ROS level in thymocytes and neurons. In this study, we reported the expression of Bmi1 in mouse cochlea and investigated the role of Bmi1 in hair cell survival. Bmi1 expressed in hair cells and supporting cells in mouse cochlea. Bmi1−/− mice displayed severe hearing loss and patched outer hair cell loss from postnatal day 22. Ototoxic drug-induced hair cells loss dramatically increased in Bmi1−/− mice compared with that in wild-type controls both in vivo and in vitro, indicating Bmi1−/− hair cells were significantly more sensitive to ototoxic drug-induced damage. Cleaved caspase-3 and TUNEL staining demonstrated that apoptosis was involved in the increased hair cell loss of Bmi1−/− mice. Aminophenyl fluorescein and MitoSOX Red staining showed the level of free radicals and mitochondrial ROS increased in Bmi1−/− hair cells due to the aggravated disequilibrium of antioxidant–prooxidant balance. Furthermore, the antioxidant N-acetylcysteine rescued Bmi1−/− hair cells from neomycin injury both in vitro and in vivo, suggesting that ROS accumulation was mainly responsible for the increased aminoglycosides sensitivity in Bmi1−/− hair cells. Our findings demonstrate that Bmi1 has an important role in hair cell survival by controlling redox balance and ROS level, thus suggesting that Bmi1 may work as a new therapeutic target for the prevention of hair cell death.
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Affiliation(s)
- Y Chen
- 1] Department of Otorhinolaryngology, Hearing Research Institute, Affiliated Eye and ENT Hospital of Fudan University, Shanghai 200031, China [2] Central Laboratory, Affiliated Eye and ENT Hospital of Fudan University, Shanghai 200031, China
| | - L Li
- Department of Otorhinolaryngology, Hearing Research Institute, Affiliated Eye and ENT Hospital of Fudan University, Shanghai 200031, China
| | - W Ni
- Department of Otorhinolaryngology, Hearing Research Institute, Affiliated Eye and ENT Hospital of Fudan University, Shanghai 200031, China
| | - Y Zhang
- 1] Department of Otorhinolaryngology, Hearing Research Institute, Affiliated Eye and ENT Hospital of Fudan University, Shanghai 200031, China [2] Central Laboratory, Affiliated Eye and ENT Hospital of Fudan University, Shanghai 200031, China [3] Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China
| | - S Sun
- 1] Department of Otorhinolaryngology, Hearing Research Institute, Affiliated Eye and ENT Hospital of Fudan University, Shanghai 200031, China [2] Central Laboratory, Affiliated Eye and ENT Hospital of Fudan University, Shanghai 200031, China
| | - D Miao
- State Key Laboratory of Reproductive Medicine, Research Center for Bone and Stem Cells, Department of Human Anatomy, Nanjing Medical University, Nanjing 210096, China
| | - R Chai
- Co-innovation Center of Neuroregeneration, Key Laboratory for Developmental Genes and Human Disease, Ministry of Education, Institute of Life Sciences, Southeast University, Nanjing 210096, China
| | - H Li
- 1] Department of Otorhinolaryngology, Hearing Research Institute, Affiliated Eye and ENT Hospital of Fudan University, Shanghai 200031, China [2] Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China [3] State Key Laboratory of Medical Neurobiology, Fudan University, Shanghai, China
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43
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Zheng B, Wang Z, Chai R. NQO1 C609T polymorphism and colorectal cancer susceptibility: a meta-analysis. Arch Med Sci 2014; 10:651-60. [PMID: 25276147 PMCID: PMC4175766 DOI: 10.5114/aoms.2014.44856] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Revised: 11/03/2013] [Accepted: 12/06/2013] [Indexed: 12/16/2022] Open
Abstract
INTRODUCTION A FEW STUDIES HAVE REPORTED AN ASSOCIATION BETWEEN NADP(H): quinine oxidoreductase 1 (NQO1) C609T polymorphism and susceptibility to colorectal cancer (CRC). However, the results were inconsistent rather than conclusive. We performed a meta-analysis to examine this association in various populations. MATERIAL AND METHODS Eligible articles were identified by a search of several databases up until June 30, 2013. Summary odds ratios (ORs) and 95% confidence intervals (CIs) were calculated to assess the strength of the association. RESULTS Overall, 14 case-control studies with 4,461 cases and 5,474 controls were included in this meta-analysis. The results indicated that the NQO1 C609T polymorphism was significantly associated with CRC susceptibility (summary ORs (95% CIs): 1.30 (1.07-1.59) for CT vs. CC, 1.64 (1.15-2.33) for TT vs. CC, 1.34 (1.10-1.64) for TT/CT vs. CC, and 1.43 (1.10-1.87) for TT vs. CT/CC). Subgroup analyses indicated that the T allele was significantly associated with CRC susceptibility in both Asians and Caucasians, and was also observed in high quality studies and hospital-based case-control studies. Specifically, we found a positive association between the NQO1 C609T polymorphism and CRC susceptibility in smokers, but not in non-smokers. CONCLUSIONS The results of this meta-analysis suggest that the NQO1 C609T polymorphism significantly contributes to increased susceptibility to CRC in both Asians and Caucasians.
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Affiliation(s)
- Bo'an Zheng
- Zhejiang Provincial People's Hospital, Hangzhou, China
| | - Zishu Wang
- Department of Medical Oncology, First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, PR China
| | - Rui Chai
- Zhejiang Provincial People's Hospital, Hangzhou, China
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Gu X, Guo L, Ji H, Sun S, Chai R, Wang L, Li H. Genetic testing for sporadic hearing loss using targeted massively parallel sequencing identifies 10 novel mutations. Clin Genet 2014; 87:588-93. [PMID: 24853665 DOI: 10.1111/cge.12431] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2014] [Revised: 05/18/2014] [Accepted: 05/19/2014] [Indexed: 11/28/2022]
Affiliation(s)
- X. Gu
- Department of Otolaryngology, Hearing Research Institute, Affiliated Eye and ENT Hospital; Fudan University; Shanghai China
| | - L. Guo
- Department of Otolaryngology, Hearing Research Institute, Affiliated Eye and ENT Hospital; Fudan University; Shanghai China
- Central laboratory, Eye and ENT Hospital of Shanghai Medical School; Fudan University; Shanghai China
| | - H. Ji
- Department of Otolaryngology, Hearing Research Institute, Affiliated Eye and ENT Hospital; Fudan University; Shanghai China
| | - S. Sun
- Department of Otolaryngology, Hearing Research Institute, Affiliated Eye and ENT Hospital; Fudan University; Shanghai China
- Central laboratory, Eye and ENT Hospital of Shanghai Medical School; Fudan University; Shanghai China
| | - R. Chai
- Key Laboratory for Developmental Genes and Human Disease, Ministry of Education, Institute of Life Sciences; Southeast University; Nanjing China
| | - L. Wang
- Institutes of Biomedical Sciences; Shanghai China
| | - H. Li
- Department of Otolaryngology, Hearing Research Institute, Affiliated Eye and ENT Hospital; Fudan University; Shanghai China
- Key Laboratory for Developmental Genes and Human Disease, Ministry of Education, Institute of Life Sciences; Southeast University; Nanjing China
- Institutes of Biomedical Sciences; Shanghai China
- State Key Laboratory of Medical Neurobiology; Fudan University; Shanghai China
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McMahon CD, Chai R, Radley-Crabb HG, Watson T, Matthews KG, Sheard PW, Soffe Z, Grounds MD, Shavlakadze T. Lifelong exercise and locally produced insulin-like growth factor-1 (IGF-1) have a modest influence on reducing age-related muscle wasting in mice. Scand J Med Sci Sports 2014; 24:e423-435. [DOI: 10.1111/sms.12200] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/27/2014] [Indexed: 12/25/2022]
Affiliation(s)
| | - R. Chai
- School of Anatomy, Physiology & Human Biology; The University of Western Australia; Nedlands Western Australia Australia
| | - H. G. Radley-Crabb
- School of Anatomy, Physiology & Human Biology; The University of Western Australia; Nedlands Western Australia Australia
- School of Biomedical Sciences; CHIRI Biosciences Research Precinct; Faculty of Health Sciences; Curtin University; Bentley Western Australia Australia
| | - T. Watson
- Agresearch Ltd; Hamilton New Zealand
| | | | - P. W. Sheard
- Department of Physiology; University of Otago; Dunedin New Zealand
| | - Z. Soffe
- School of Anatomy, Physiology & Human Biology; The University of Western Australia; Nedlands Western Australia Australia
| | - M. D. Grounds
- School of Anatomy, Physiology & Human Biology; The University of Western Australia; Nedlands Western Australia Australia
| | - T. Shavlakadze
- School of Anatomy, Physiology & Human Biology; The University of Western Australia; Nedlands Western Australia Australia
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Ben Q, Sun Y, Chai R, Qian A, Xu B, Yuan Y. Dietary fiber intake reduces risk for colorectal adenoma: a meta-analysis. Gastroenterology 2014; 146:689-699.e6. [PMID: 24216326 DOI: 10.1053/j.gastro.2013.11.003] [Citation(s) in RCA: 103] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2013] [Revised: 10/31/2013] [Accepted: 11/03/2013] [Indexed: 12/12/2022]
Abstract
BACKGROUND & AIMS Reports on the association between dietary fiber intake and risk of colorectal adenoma (CRA), the precursor of colorectal cancer, have been inconsistent. We conducted a meta-analysis of case-control and cohort studies to analyze this association. METHODS We searched the MEDLINE and EMBASE databases to identify relevant studies published through July 2013. A random-effects model was used to estimate summary relative risks (SRRs) and 95% confidence intervals (CIs) for associations between fiber intake and CRA risk. Heterogeneity among studies was assessed using the Cochran Q and I(2) statistics. RESULTS Our meta-analysis included 20 studies involving 10,948 subjects with CRA. The SRRs of CRA for total dietary fiber were 0.72 (95% CI, 0.63-0.83) in a high- vs low-intake analysis and 0.91 (95% CI, 0.87-0.95) per 10-g/day increase in fiber intake in a dose-response model. Subgroup analyses indicated a significant inverse association between total fiber intake and CRA risk in case-control studies (SRR, 0.66; 95% CI, 0.56-0.77), but not in cohort studies (SRR, 0.92; 95% CI, 0.76-1.10). The SRRs of CRA were 0.84 for fruit fiber (95% CI, 0.76-0.94; n = 6 studies), 0.93 for vegetable fiber (95% CI, 0.84-1.04; n = 6 studies), and 0.76 for cereal fiber (95% CI, 0.62-0.92; n = 9 studies) in high- vs low-intake analyses. CONCLUSIONS Our findings support the hypothesis that high dietary fiber intake is associated inversely with CRA risk. Further studies with prospective designs that use validated questionnaires and control for important confounders are warranted.
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Affiliation(s)
- Qiwen Ben
- Department of Gastroenterology, Ruijin Hospital, Shanghai Jiaotong University, Shanghai, PR China
| | - Yunwei Sun
- Department of Gastroenterology, Ruijin Hospital, Shanghai Jiaotong University, Shanghai, PR China
| | - Rui Chai
- Department of Colorectal Surgery, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang, PR China
| | - Aihua Qian
- Department of Gastroenterology, Ruijin Hospital, Shanghai Jiaotong University, Shanghai, PR China
| | - Bin Xu
- Department of Gastroenterology, Ruijin Hospital, Shanghai Jiaotong University, Shanghai, PR China
| | - Yaozong Yuan
- Department of Gastroenterology, Ruijin Hospital, Shanghai Jiaotong University, Shanghai, PR China.
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Yu Z, Zhang C, Chai R, Du Y, Gao X, Xing J, Yu E, Zhang W, Zhang X, Cao G, Fu C. Prognostic significance and molecular mechanism of ATP-binding cassette subfamily C member 4 in resistance to neoadjuvant radiotherapy of locally advanced rectal carcinoma. PLoS One 2014; 9:e85446. [PMID: 24454870 PMCID: PMC3893201 DOI: 10.1371/journal.pone.0085446] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2013] [Accepted: 11/27/2013] [Indexed: 12/15/2022] Open
Abstract
Background Mechanism of radioresistance in rectal carcinoma remains largely unknown. We aimed to evaluate the predictive role of ATP-binding cassette subfamily C member 4 (ABCC4) in locally advanced rectal carcinoma and explore possible molecular mechanisms by which ABCC4 confers the resistance to neoadjuvant radiotherapy. Methods The expression of ABCC4 and P53 mutant in biopsy tissue specimens from 121 locally advanced rectal carcinoma patients was examined using immunohistochemistry. The factors contributing to 3-year overall survival and disease-free survival were evaluated using the Kaplan-Meier method and Cox proportional hazard model. Lentivirus-mediated small hairpin RNA was applied to inhibit ABCC4 expression in colorectal carcinoma cell line RKO, and investigate the radiosensitivity in xenograft model. Intracellular cyclic adenosine monophosphate concentration and cell cycle distribution following irradiation were detected. Results High expression of ABCC4 and p53 mutant in pretreated tumors, poor pathological response, and high final tumor staging were significant factors independently predicted an unfavorable prognosis of locally advanced rectal carcinoma patients after neoadjuvant radiotherapy. Down-regulation of ABCC4 expression significantly enhanced irradiation-induced suppression of tumor growth in xenograft model. Furthermore, down-regulation of ABCC4 expression enhanced intracellular cyclic adenosine monophosphate production and noticeable deficiency of G1-S phase checkpoint in cell cycle following irradiation. Conclusions Our study suggests that ABCC4 serves as a novel predictive biomarker that is responsible for the radioresistance and predicts a poor prognosis for locally advanced rectal carcinoma after neoadjuvant radiotherapy.
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Affiliation(s)
- Zhiqi Yu
- Department of Colorectal Surgery, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Chang Zhang
- Department of Colorectal Surgery, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Rui Chai
- Department of Colorectal Surgery, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang, China
| | - Yan Du
- Department of Epidemiology, College of Basic Medical Sciences, Second Military Medical University, Shanghai, China
| | - Xianhua Gao
- Department of Colorectal Surgery, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Junjie Xing
- Department of Colorectal Surgery, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Enda Yu
- Department of Colorectal Surgery, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Wei Zhang
- Department of Colorectal Surgery, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Xiaoqing Zhang
- Department of Radiotherapy, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Guangwen Cao
- Department of Epidemiology, College of Basic Medical Sciences, Second Military Medical University, Shanghai, China
| | - Chuangang Fu
- Department of Colorectal Surgery, Changhai Hospital, Second Military Medical University, Shanghai, China
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Tu S, Yuan H, Hu J, Zhao C, Chai R, Cao H. Design, Synthesis and Biological Evaluation of Nitro Oxide Donating N-Hydroxycinnamamide Derivatives as Histone Deacetylase Inhibitors. Chem Pharm Bull (Tokyo) 2014; 62:1185-91. [DOI: 10.1248/cpb.c14-00449] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Shiliang Tu
- Department of Coloproctology, Zhejiang Provincial People's Hospital
| | - Hang Yuan
- Department of Coloproctology, Zhejiang Provincial People's Hospital
| | - Jie Hu
- Department of Pharmacy, Wenzhou Medical University
| | | | - Rui Chai
- Department of Coloproctology, Zhejiang Provincial People's Hospital
| | - Hongfeng Cao
- Department of Coloproctology, Zhejiang Provincial People's Hospital
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Chai R, Yu ZQ, Fu CG, Wang H, Zhang W, Liu LJ, Zhang C. [Preliminary study on relationship between multi-drug resistance-associated protein 4 and radiosensitivity of rectal cancer]. Zhonghua Wei Chang Wai Ke Za Zhi 2011; 14:627-630. [PMID: 21866459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
OBJECTIVE To explore the correlation between multi-drug resistance-associated protein 4(MRP4) and the sensitivity of rectal cancer to radiation. METHODS A total of 95 patients with advanced rectal cancer and received radiation therapy between January 2000 and January 2009. MRP4 and P53 protein expression in the paraffin-embedded specimen were detected by immunohistochemistry. Logistic regression analysis was used to evaluate factors associated with the sensitivity of rectal cancer to radiation. RESULTS Forty patients(42%) were sensitive to radiation therapy, of whom 10(11%) achieved pathological complete remission. Fifty-five patients were (58%) not responsive to radiation. Patients with low expression of MRP4 had a 66.7%(24/36) response rate, significantly higher than that of patients with high MRP4 expression (29.1%,16/59)(P<0.05). Patients with low expression of P53 had a 63.9%(23/36) response rate, significantly higher than that of patients with high P53 expression(28.8%,17/59)(P<0.01). The response rate after long course radiation therapy was 83.3%(20/24), significantly higher than that of patients who underwent short and medium course radiation[(31.3%, 5/16) and(27.3%,15/55)](P<0.01). Multivariate Logistic regression analysis showed radiation regimen, the expression of P53 and MRP4 protein were independently associated with the sensitivity of rectal cancer to radiation(P<0.05). CONCLUSION MRP4 may serve as a predictive marker for the sensitivity of rectal cancer to preoperative radiation.
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Affiliation(s)
- Rui Chai
- Department of Colorectal Surgery, Changhai Hospital, The Second Military Medical University, Shanghai 200433, China
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Chai R, Fu CG, Wang H, Liu LJ. [Analysis of risk factors associated with lymph node metastasis and prognosis of T1-2 colorectal cancer]. Zhonghua Wei Chang Wai Ke Za Zhi 2011; 14:245-248. [PMID: 21538263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
OBJECTIVE To investigate factors associated with lymph node metastasis and prognosis in patients with T1-2 colorectal cancer. METHODS Patients with pT1-2 colorectal cancer between January 1999 to January 2005 were included. Chi-square test and multivariable logistic analysis were performed to evaluate risk factors associated with lymph node metastasis. Survival outcomes were analyzed using Kaplan-Meier and Cox regression model. RESULTS Tumor location and depth of invasion were independent risk factors for lymph node metastasis(P<0.01 and P<0.05). Gender, age, tumor gross pattern, tumor differentiation, carcinoembryonic antigen level, and tumor diameter were not associated with lymph node metastasis. Lymph node metastasis and distant metastasis on postoperative follow-up were independent risk factors for survival(P<0.05 and P<0.01). CONCLUSION Factors associated with lymph node metastasis in pT1-2 colorectal cancer do not affect the survival. However, lymph node metastasis and distant metastasis are predictive for survival.
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Affiliation(s)
- Rui Chai
- Department of Colorectal Surgery, Changhai Hospital, Second Military Medical University, Shanghai 200433, China
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