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Ge T, Liu H, Wang ZH, Cao Y, Zhang YC, Huang L, Qian WB, Zhou XX. [Characteristics and impact factors of SARS-CoV-2 infection in adult patients with relapsed/refractory B-cell non-Hodgkin lymphoma receiving chimeric antigen receptor T-cell therapy]. Zhonghua Xue Ye Xue Za Zhi 2023; 44:825-831. [PMID: 38049334 PMCID: PMC10694084 DOI: 10.3760/cma.j.issn.0253-2727.2023.10.006] [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] [Grants] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Indexed: 12/06/2023]
Abstract
Objective: To explore the clinical characteristics and treatment of COVID-19 infection in patients with relapsed/refractory B-cell non-Hodgkin lymphoma before and after receiving chimeric antigen receptor T-cell therapy, and study the influencing factors of severe COVID-19 infection in these patients. Methods: The data of 59 patients with relapsed/refractory B-cell non-Hodgkin lymphoma who received chimeric antigen receptor T-cell therapy at the Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology and Department of Hematology, the Second Affiliated Hospital, College of Medicine, Zhejiang University between December 2017 and February 2023, and who were infected with novel coronavirus between December 2022 and February 2023 were retrospectively studied. Patients were divided into light, medium, severe, and critical groups, and the differences between the groups were analyzed using the chi-square test. A univariate logistic regression model was used to evaluate the contribution of each variable and its relationship with severe infection. The chi-square and Fisher's exact tests were used to analyze the differences between the B-cell aplasia and B-cell recovery (BCR) groups. Results: Of the 59 pre- and post-infusion infections, 39 (66.1%) led to mild COVID-19, 9 (15.3%) resulted in moderate COVID-19, 10 (16.9%) resulted in severe COVID-19, and 1 (1.7%) led to critical COVID-19. Moroever, age greater than 55 years, having received autologous hematopoietic stem cell transplantation, progressive disease status, and B-cell aplasia at the time of diagnosis of COVID-19 infection are factors affecting severe infection. Patients with B-cell aplasia had a more severe infection with COVID-19 (P<0.001), a longer duration (P=0.015), a longer antiviral therapy course (P<0.001), and a higher hospitalization rate (P<0.001) than the BCR group. Conclusion: Active prevention and treatment of COVID-19 infection remains a crucial issue requiring urgent attention in managing patients with relapsed/refractory B-cell non-Hodgkin lymphoma treated with chimeric antigen receptor T-cell therapy.
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Affiliation(s)
- T Ge
- Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - H Liu
- Department of Hematology, the Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310009, China
| | - Z H Wang
- Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Y Cao
- Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Y C Zhang
- Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - L Huang
- Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - W B Qian
- Department of Hematology, the Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310009, China
| | - X X Zhou
- Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
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Chen B, Ge T, Jian M, Chen L, Fang Z, He Z, Huang C, An Y, Yin S, Xiong Y, Zhang J, Li R, Ye M, Li Y, Liu F, Ma W, Songyang Z. Author Correction: Transmembrane nuclease NUMEN/ENDOD1 regulates DNA repair pathway choice at the nuclear periphery. Nat Cell Biol 2023; 25:1384. [PMID: 37528242 DOI: 10.1038/s41556-023-01215-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/03/2023]
Affiliation(s)
- Bohong Chen
- MOE Key Laboratory of Gene Function and Regulation and Guangzhou Key Laboratory of Healthy Aging Research, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Tianyu Ge
- MOE Key Laboratory of Gene Function and Regulation and Guangzhou Key Laboratory of Healthy Aging Research, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Meiqi Jian
- MOE Key Laboratory of Gene Function and Regulation and Guangzhou Key Laboratory of Healthy Aging Research, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Liutao Chen
- MOE Key Laboratory of Gene Function and Regulation and Guangzhou Key Laboratory of Healthy Aging Research, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Zhengwen Fang
- MOE Key Laboratory of Gene Function and Regulation and Guangzhou Key Laboratory of Healthy Aging Research, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Zibin He
- MOE Key Laboratory of Gene Function and Regulation and Guangzhou Key Laboratory of Healthy Aging Research, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Chengjing Huang
- MOE Key Laboratory of Gene Function and Regulation and Guangzhou Key Laboratory of Healthy Aging Research, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Yan An
- MOE Key Laboratory of Gene Function and Regulation and Guangzhou Key Laboratory of Healthy Aging Research, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Shanshan Yin
- MOE Key Laboratory of Gene Function and Regulation and Guangzhou Key Laboratory of Healthy Aging Research, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Yuanyan Xiong
- MOE Key Laboratory of Gene Function and Regulation and Guangzhou Key Laboratory of Healthy Aging Research, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - JingKai Zhang
- MOE Key Laboratory of Gene Function and Regulation and Guangzhou Key Laboratory of Healthy Aging Research, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Ruofei Li
- MOE Key Laboratory of Gene Function and Regulation and Guangzhou Key Laboratory of Healthy Aging Research, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Miaoman Ye
- MOE Key Laboratory of Gene Function and Regulation and Guangzhou Key Laboratory of Healthy Aging Research, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Yubing Li
- MOE Key Laboratory of Gene Function and Regulation and Guangzhou Key Laboratory of Healthy Aging Research, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Feng Liu
- MOE Key Laboratory of Gene Function and Regulation and Guangzhou Key Laboratory of Healthy Aging Research, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Wenbin Ma
- MOE Key Laboratory of Gene Function and Regulation and Guangzhou Key Laboratory of Healthy Aging Research, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Zhou Songyang
- MOE Key Laboratory of Gene Function and Regulation and Guangzhou Key Laboratory of Healthy Aging Research, School of Life Sciences, Sun Yat-sen University, Guangzhou, China.
- Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China.
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Chen B, Ge T, Jian M, Chen L, Fang Z, He Z, Huang C, An Y, Yin S, Xiong Y, Zhang J, Li R, Ye M, Li Y, Liu F, Ma W, Songyang Z. Transmembrane nuclease NUMEN/ENDOD1 regulates DNA repair pathway choice at the nuclear periphery. Nat Cell Biol 2023:10.1038/s41556-023-01165-1. [PMID: 37322289 DOI: 10.1038/s41556-023-01165-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 05/10/2023] [Indexed: 06/17/2023]
Abstract
Proper repair of DNA damage lesions is essential to maintaining genome integrity and preventing the development of human diseases, including cancer. Increasing evidence suggests the importance of the nuclear envelope in the spatial regulation of DNA repair, although the mechanisms of such regulatory processes remain poorly defined. Through a genome-wide synthetic viability screen for PARP-inhibitor resistance using an inducible CRISPR-Cas9 platform and BRCA1-deficient breast cancer cells, we identified a transmembrane nuclease (renamed NUMEN) that could facilitate compartmentalized and non-homologous end joining-dependent repair of double-stranded DNA breaks at the nuclear periphery. Collectively, our data demonstrate that NUMEN generates short 5' overhangs through its endonuclease and 3'→5' exonuclease activities, promotes the repair of DNA lesions-including heterochromatic lamina-associated domain breaks as well as deprotected telomeres-and functions as a downstream effector of DNA-dependent protein kinase catalytic subunit. These findings underline the role of NUMEN as a key player in DNA repair pathway choice and genome-stability maintenance, and have implications for ongoing research into the development and treatment of genome instability disorders.
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Affiliation(s)
- Bohong Chen
- MOE Key Laboratory of Gene Function and Regulation and Guangzhou Key Laboratory of Healthy Aging Research, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Tianyu Ge
- MOE Key Laboratory of Gene Function and Regulation and Guangzhou Key Laboratory of Healthy Aging Research, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Meiqi Jian
- MOE Key Laboratory of Gene Function and Regulation and Guangzhou Key Laboratory of Healthy Aging Research, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Liutao Chen
- MOE Key Laboratory of Gene Function and Regulation and Guangzhou Key Laboratory of Healthy Aging Research, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Zhengwen Fang
- MOE Key Laboratory of Gene Function and Regulation and Guangzhou Key Laboratory of Healthy Aging Research, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Zibin He
- MOE Key Laboratory of Gene Function and Regulation and Guangzhou Key Laboratory of Healthy Aging Research, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Chengjing Huang
- MOE Key Laboratory of Gene Function and Regulation and Guangzhou Key Laboratory of Healthy Aging Research, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Yan An
- MOE Key Laboratory of Gene Function and Regulation and Guangzhou Key Laboratory of Healthy Aging Research, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Shanshan Yin
- MOE Key Laboratory of Gene Function and Regulation and Guangzhou Key Laboratory of Healthy Aging Research, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Yuanyuan Xiong
- MOE Key Laboratory of Gene Function and Regulation and Guangzhou Key Laboratory of Healthy Aging Research, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - JingKai Zhang
- MOE Key Laboratory of Gene Function and Regulation and Guangzhou Key Laboratory of Healthy Aging Research, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Ruofei Li
- MOE Key Laboratory of Gene Function and Regulation and Guangzhou Key Laboratory of Healthy Aging Research, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Miaoman Ye
- MOE Key Laboratory of Gene Function and Regulation and Guangzhou Key Laboratory of Healthy Aging Research, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Yubing Li
- MOE Key Laboratory of Gene Function and Regulation and Guangzhou Key Laboratory of Healthy Aging Research, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Feng Liu
- MOE Key Laboratory of Gene Function and Regulation and Guangzhou Key Laboratory of Healthy Aging Research, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Wenbing Ma
- MOE Key Laboratory of Gene Function and Regulation and Guangzhou Key Laboratory of Healthy Aging Research, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Zhou Songyang
- MOE Key Laboratory of Gene Function and Regulation and Guangzhou Key Laboratory of Healthy Aging Research, School of Life Sciences, Sun Yat-sen University, Guangzhou, China.
- Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China.
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Ma H, Papworth SK, Ge T, Wu X, Yu C, Zhang H, Xiao F, Gaillard D, Bielby J, Turvey ST. Ecological knowledge and value of traded species: Local awareness of native turtles in Hainan, China. Anim Conserv 2023. [DOI: 10.1111/acv.12867] [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: 03/29/2023]
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Wang X, Ge T, Zhou T, Xia Q, Lu YM, Wang LB, Zhang T. [A case of Kabuki syndrome featuring biliary atresia due to KMT2D gene variation]. Zhonghua Er Ke Za Zhi 2023; 61:180-181. [PMID: 36720605 DOI: 10.3760/cma.j.cn112140-20220704-00613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- X Wang
- Department of Gastroenterology, Hepatology and Nutrition, Shanghai Children's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200062, China
| | - T Ge
- Department of Gastroenterology, Hepatology and Nutrition, Shanghai Children's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200062, China
| | - T Zhou
- Department of Liver Transplantation, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 201114, China
| | - Q Xia
- Department of Liver Transplantation, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 201114, China
| | - Y M Lu
- Department of Pediatrics, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 201114, China
| | - L B Wang
- Respiratory Department, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - T Zhang
- Department of Gastroenterology, Hepatology and Nutrition, Shanghai Children's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200062, China
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Feng Z, Shi H, Liang B, Ge T, Cai M, Liu F, Huang K, Wen J, Chen Q, Ge B. Bioinformatics and experimental findings reveal the therapeutic actions and targets of pachymic acid against cystitis glandularis. Biofactors 2021; 47:665-673. [PMID: 33893687 DOI: 10.1002/biof.1734] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Accepted: 04/09/2021] [Indexed: 12/27/2022]
Abstract
Pachymic acid (PA), a bioactive ingredient isolated from Poria cocos Wolf, is reported with potential benefits of anti-inflammatory, anti-oxidative actions. It is reasoned that PA may play the potential benefits against cystitis glandularis (CG), an inflammation of the bladder tissue. In this study, we aimed to apply the network pharmacology and molecular docking analyses to reveal concrete anti-CG targets and mechanisms of PA, and then the bioinformatic findings were verified by using clinical and animal samples. The methodological data from network pharmacology approach showed that 303 and 243 reporting targets of CG and PA, and other 31 shared targets of CG and PA were identified. Subsequently, all top targets of PA against CG were screened out, including cyclooxygenase-2, epidermal growth factor receptor, tumor antigen p53 (TP53), tumor necrosis factor-alpha (TNF), interleukin-1 (IL-1) beta, proto-oncogene c-jun. Molecular docking data demonstrated that PA exerted potent bonding capacities with TNF, TP53 proteins in CG. In human study, the findings suggested that overactivated TNF-α expression and suppressed TP53 activation were detected in CG samples. In animal study, PA-treated mice showed reduced intravesical IL-1, IL-6 levels, and lactate dehydrogenase content, downregulated TNF-α and upregulated TP53 proteins in bladder samples. Taken together, our bioinformatics and experimental findings identify the key anti-CG biotargets and mechanisms of PA. More markedly, these pivotal pharmacological targets of PA against CG have been screened out and verified by using computational and experimental analyses.
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Affiliation(s)
- Zihao Feng
- The Second Affiliated Hospital of Guilin Medical University, Guilin Medical University, Guilin, Guangxi, People's Republic of China
| | - Hailin Shi
- The Second Affiliated Hospital of Guilin Medical University, Guilin Medical University, Guilin, Guangxi, People's Republic of China
| | - Bojian Liang
- The Second Affiliated Hospital of Guilin Medical University, Guilin Medical University, Guilin, Guangxi, People's Republic of China
| | - Tianyu Ge
- The Second Affiliated Hospital of Guilin Medical University, Guilin Medical University, Guilin, Guangxi, People's Republic of China
| | - Menghui Cai
- The Second Affiliated Hospital of Guilin Medical University, Guilin Medical University, Guilin, Guangxi, People's Republic of China
| | - Feng Liu
- The Second Affiliated Hospital of Guilin Medical University, Guilin Medical University, Guilin, Guangxi, People's Republic of China
| | - Kunping Huang
- The Second Affiliated Hospital of Guilin Medical University, Guilin Medical University, Guilin, Guangxi, People's Republic of China
| | - Jintao Wen
- The Second Affiliated Hospital of Guilin Medical University, Guilin Medical University, Guilin, Guangxi, People's Republic of China
| | - Qiuhong Chen
- The Second Affiliated Hospital of Guilin Medical University, Guilin Medical University, Guilin, Guangxi, People's Republic of China
| | - Bo Ge
- The Second Affiliated Hospital of Guilin Medical University, Guilin Medical University, Guilin, Guangxi, People's Republic of China
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Ge T, Wu HC, Zhou YY, Shen SM, Zhu LG, You GX. MiR-296-3p may affect the proliferation and migration of non-small cell lung cancer cells via regulating RABL3. Eur Rev Med Pharmacol Sci 2020; 23:5823-5830. [PMID: 31298353 DOI: 10.26355/eurrev_201907_18321] [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] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Non-small cell lung cancer (NSCLC) is the leading cause of cancer-related death worldwide. The pathogenesis of NSCLC has not yet been fully understood, and the therapeutic efficacy of current anti-NSCLC medication remains unsatisfactory. Previous studies indicated that miR-296-3p was down-regulated in NSCLC, suggesting that miR-296-3p may participate in the pathogenesis of NSCLC; however, the specific mechanisms still need to be further explored. The aim of this work is to investigate the roles of miR-296-3p in NSCLC and the related mechanism. PATIENTS AND METHODS Thirty NSCLC tissue and paired adjacent tissue were collected, and Real Time-quantitative Polymerase Chain Reaction (RT-qPCR) was performed to examine the expression of miR-296-3p in cancer tissue and the adjacent tissue. Next, A549 cells were cultured and transfected with miR-296-3p mimics, and cell migration and invasion were determined using scratch wound-healing and transwell assays. Moreover, Western blot assay was performed to determine the effect of miR-296-3p on the expression of Rab-like 3 (RABL3), Matrix metallopeptidase (MMP)-2, Janus kinase (JAK) and Signal transducer and activator of transcription 3 (STAT3); next, Dual-Luciferase reporter assay has been conducted to prove the direct targeting relationship between miR-296-3p and RABL3. Finally, the cells of different treatments were subcutaneously implanted into nude mice to investigate the effect of miR-296-3p mimics in the xenograft mice tumor models. RESULTS Our data indicated that miR-296-3p was significantly down-regulated and RABL3 was markedly up-regulated in NSCLC tissue compared with the adjacent tissue. Moreover, transient over-expression of miR-296-3p in A549 cells induced a significant decrease in the proliferation and invasion ability of A549 cells, as well as decreased expression of RABL3, MMP-2, JAK and STAT3. Furthermore, the Dual-Luciferase reporter assay confirmed that RABL3 is a direct target of miR-296-3p. Finally, the results of animal studies indicated that miR-296-3p can regulate the tumorigenesis of A549 cells in vivo. CONCLUSIONS Our findings proved that miR-296-3p may play a role as a tumor suppressor in NSCLC both in vitro and in vivo, and we first reported that miR-296-3p can regulate the migration and invasion of A549 cells via targeting RABL3. Our data suggested that miR-296-3p may serve as a potential therapeutic target for treating NSCLC.
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Affiliation(s)
- T Ge
- Respiratory Department, Ningbo City Medical Treatment Center Lihuili Hospital, Ningbo, China.
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Li X, Xu C, Xu S, Wang W, Ye J, Zhu Y, Ge T, Fang M, Lv T, Song Y. EP1.14-45 ROS1-ADGRG6: A Novel ROS1 Oncogenic Fusion Variant in Lung Adenocarcinoma and the Response to Crizotinib. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.2330] [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: 11/28/2022]
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Yu J, Lu W, Ge T, Huang R, Chen B, Ye M, Bai Y, Shi G, Songyang Z, Ma W, Huang J. Interaction Between Sympk and Oct4 Promotes Mouse Embryonic Stem Cell Proliferation. Stem Cells 2019; 37:743-753. [PMID: 30801858 DOI: 10.1002/stem.2992] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 07/20/2018] [Revised: 12/20/2018] [Accepted: 01/17/2019] [Indexed: 01/23/2023]
Abstract
The scaffold protein Symplekin (Sympk) is involved in cytoplasmic RNA polyadenylation, transcriptional modulation, and the regulation of epithelial differentiation and proliferation via tight junctions. It is highly expressed in embryonic stem cells (ESCs), in which its role remains unknown. In this study, we found Sympk overexpression in mouse ESCs significantly increased colony formation, and Sympk deletion via CRISPR/Cas9 decreased colony formation. Sympk promoted ESC growth and its overexpression sustained ESC pluripotency, as assessed by teratoma and chimeric mouse formation. Genomic stability was preserved in these cells after long-term passage. The domain of unknown function 3453 (DUF3453) in Sympk was required for its interaction with the key pluripotent factor Oct4, and its depletion led to impaired colony formation. Sympk activated proliferation-related genes and suppressed differentiation-related genes. Our results indicate that Sympk interacts with Oct4 to promote self-renewal and pluripotency in ESCs and preserves genome integrity; accordingly, it has potential value for stem cell therapies. Stem Cells 2019;37:743-753.
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Affiliation(s)
- Jianping Yu
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, SunYat-sen University, Guangzhou, People's Republic of China
| | - Weisi Lu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Tianyu Ge
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, SunYat-sen University, Guangzhou, People's Republic of China
| | - Rui Huang
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, SunYat-sen University, Guangzhou, People's Republic of China
| | - Bohong Chen
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, SunYat-sen University, Guangzhou, People's Republic of China
| | - Miaoman Ye
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, SunYat-sen University, Guangzhou, People's Republic of China
| | - Yaofu Bai
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, SunYat-sen University, Guangzhou, People's Republic of China
| | - Guang Shi
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, SunYat-sen University, Guangzhou, People's Republic of China
| | - Zhou Songyang
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, SunYat-sen University, Guangzhou, People's Republic of China.,State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, People's Republic of China.,Key Laboratory of Reproductive Medicine of Guangdong Province, School of Life Sciences and the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Wenbin Ma
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, SunYat-sen University, Guangzhou, People's Republic of China.,State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Junjiu Huang
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, SunYat-sen University, Guangzhou, People's Republic of China.,State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, People's Republic of China.,Key Laboratory of Reproductive Medicine of Guangdong Province, School of Life Sciences and the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China.,Key Laboratory of Reproductive Medicine of Guangdong Province, Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, People's Republic of China
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Zhang H, Yu P, Zhong S, Ge T, Peng S, Zhou Z, Guo X. Gliocyte and synapse analyses in cerebral ganglia of the Chinese mitten crab, Eriocheir sinensis: ultrastructural study. Eur J Histochem 2016; 60:2655. [PMID: 27734995 PMCID: PMC5062632 DOI: 10.4081/ejh.2016.2655] [Citation(s) in RCA: 6] [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: 04/07/2016] [Revised: 06/16/2016] [Accepted: 07/01/2016] [Indexed: 01/13/2023] Open
Abstract
The Chinese mitten crab Eriocheir sinensis is an economically important aquatic species in China. Many studies on gene structure, breeding, and diseases of the crab have been reported. However, knowledge about the organization of the nerve system of the crab remains largely unknown. To study the ultrastructure of the cerebral ganglia of E. sinensis and to compare the histological findings regarding the nerve systems of crustaceans, the cerebral ganglia were observed by transmission electron microscopy. The results showed that four types of gliocytes, including type I, II, III, and IV gliocytes were located in the cerebral ganglia. In addition, three types of synapses were present in the cerebral ganglia, including unidirectional synapses, bidirectional synapses, and combined type synapses.
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Affiliation(s)
- H Zhang
- Jiangxi Agricultural University.
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11
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Zhang H, Guo X, Zhong S, Ge T, Peng S, Yu P, Zhou Z. Heterogeneous vesicles in mucous epithelial cells of posterior esophagus of Chinese giant salamander (Andrias davidianus). Eur J Histochem 2015; 59:2521. [PMID: 26428885 PMCID: PMC4598597 DOI: 10.4081/ejh.2015.2521] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [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: 04/13/2015] [Revised: 07/04/2015] [Accepted: 07/06/2015] [Indexed: 11/23/2022] Open
Abstract
The Chinese giant salamander belongs to an old lineage of salamanders and endangered species. Many studies of breeding and disease regarding this amphibian had been implemented. However, the studies on the ultrastructure of this amphibian are rare. In this work, we provide a histological and ultra-structural investigation on posterior esophagus of Chinese giant salamander. The sections of amphibian esophagus were stained by hematoxylin & eosin (H&E). Moreover, the esophageal epithelium was observed by transmission electron microscopy (TEM). The results showed that esophageal epithelium was a single layer epithelium, which consisted of mucous cells and columnar cells. The esophageal glands were present in submucosa. The columnar cells were ciliated. According to the diverging ultrastructure of mucous vesicles, three types of mucous cells could be identified in the esophageal mucosa: i) electron-lucent vesicles mucous cell (ELV-MC); ii) electron-dense vesicles mucous cell (EDV-MC); and iii) mixed vesicles mucous cell (MV-MC).
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Affiliation(s)
- H Zhang
- Jiangxi Agricultural University.
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12
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Hu F, Deng X, Yang X, Jin H, Gu D, Lv X, Wang C, Zhang Y, Huo X, Shen Q, Luo Q, Zhao F, Ge T, Zhao F, Chu W, Shu H, Yao M, Fan J, Qin W. Hypoxia upregulates Rab11-family interacting protein 4 through HIF-1α to promote the metastasis of hepatocellular carcinoma. Oncogene 2015; 34:6007-17. [PMID: 25745995 DOI: 10.1038/onc.2015.49] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Revised: 12/23/2014] [Accepted: 01/14/2015] [Indexed: 12/21/2022]
Abstract
Hypoxic microenvironment is a powerful driving force for the invasion and metastasis of hepatocellular carcinoma (HCC). Hypoxia-inducible factor 1α (HIF-1α), as a crucial regulator of transcriptional responses to hypoxia, induces the expression of multiple target genes involved in different steps of HCC metastatic process. It is critical to find target genes associated with metastasis under hypoxia for shedding new light on molecular mechanism of HCC metastasis. In this study, we uncovered that hypoxia could induce the upregulation of Rab11-family interacting protein 4 (Rab11-FIP4) and activation of Rab11-FIP4 promoter by HIF-1α. The overexpression of Rab11-FIP4 significantly enhanced the mobility and invasiveness of HCC cells in vitro, also contributed to distant lung metastasis in vivo, whereas silencing of Rab11-FIP4 decreased the ability of migration and invasion in HCC cells in vitro and suppressed lung metastasis in vivo. Rab11-FIP4 facilitated HCC metastasis through the phosphorylation of PRAS40, which was regulated by mTOR. Furthermore, the expression level of Rab11-FIP4 was significantly increased in HCC tissues and high expression of Rab11-FIP4 was closely correlated with vascular invasion and poor prognosis in HCC patients. A markedly positive correlation between the expression of Rab11-FIP4 and HIF-1α was observed in HCC tissues and combination of Rab11-FIP4 and HIF-1α was a more valuable predictor of poor prognosis for HCC patients. In conclusion, Rab11-FIP4 is a target gene of HIF-1α and has a pro-metastatic role in HCC, suggesting that Rab11-FIP4 may be a promising candidate target for HCC treatment.
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Affiliation(s)
- F Hu
- Shanghai Medical College of Fudan University, Shanghai, China.,State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - X Deng
- Shanghai Medical College of Fudan University, Shanghai, China.,State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - X Yang
- Key Laboratory for Carcinogenesis and Cancer Invasion, The Chinese Ministry of Education, Liver Cancer Institute, Zhongshan Hospital and Shanghai Medical College, Fudan University, Shanghai, China
| | - H Jin
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - D Gu
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Department of Pathophysiology, Guangdong Medical College, Dongguan, China
| | - X Lv
- Basic Medical Research Centre, Medical College of Nantong University, Nantong, China
| | - C Wang
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Y Zhang
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - X Huo
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Q Shen
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Q Luo
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - F Zhao
- Basic Medical Research Centre, Medical College of Nantong University, Nantong, China
| | - T Ge
- Shanghai Medical College of Fudan University, Shanghai, China.,State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - F Zhao
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - W Chu
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - H Shu
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - M Yao
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - J Fan
- Key Laboratory for Carcinogenesis and Cancer Invasion, The Chinese Ministry of Education, Liver Cancer Institute, Zhongshan Hospital and Shanghai Medical College, Fudan University, Shanghai, China
| | - W Qin
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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13
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Zhang H, Ge T, Peng S, Zhong S, Zhou Z. Microstructure Features of Proventriculus and Ultrastructure of the Gastric Gland Cells in Chinese Taihe Black-bone Silky Fowl (Gallus gallus domesticusBrisson). Anat Histol Embryol 2014; 45:1-8. [DOI: 10.1111/ahe.12164] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2013] [Accepted: 10/22/2014] [Indexed: 11/29/2022]
Affiliation(s)
- H. Zhang
- College of Animal Science and Technology; Jiangxi Agricultural University; Nanchang 330045 China
| | - T. Ge
- College of Animal Science and Technology; Jiangxi Agricultural University; Nanchang 330045 China
| | - S. Peng
- College of Animal Science and Technology; Jiangxi Agricultural University; Nanchang 330045 China
| | - S. Zhong
- College of Animal Science and Technology; Jiangxi Agricultural University; Nanchang 330045 China
| | - Z. Zhou
- College of Animal Science and Technology; Jiangxi Agricultural University; Nanchang 330045 China
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14
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Wang X, Chen GY, Yang SS, Tian Y, Ge T, Qin H, Han W, Chang HY. Effects of high thoracic epidural anesthesia on ischemic cardiomyopathy cardiac function and autonomic neural function. Genet Mol Res 2014; 13:6813-9. [PMID: 25177960 DOI: 10.4238/2014.august.29.2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
We aimed at observing the effects of high thoracic epidural anesthesia (HTEA) on cardiac structure and function, heart rate variability (HRV), and QT interval variation (QTV) in ischemic cardiomyopathy (ICM) patients with chronic heart failure. We divided 30 ICM patients into HTEA (N = 16) and control (N = 14) groups.The control group was treated with medication, and the HTEA group was treated with HTEA and medication for 4 weeks. We measured the changes in the left-ventricular end-diastolic diameter (LVEDd) and left-ventricular ejection fraction (LVEF) before and after treatment by using echocardiography and examined changes in HRV and QTV using ambulatory electrocardiogram. HTEA significantly narrowed the LVEDd, improved LVEF, significantly increased the HRV, and significantly reduced the QTV in the ICM group compared to the control group. HTEA significantly narrowed the ventricular chamber diameter size of ICM patients, enhanced myocardial contractility, increased myocardial electrical stability, and improved the cardiac structure and function.
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Affiliation(s)
- X Wang
- Department of Cardiology, The First Affiliated Hospital of Harbin Medical University, Nangang District, Harbin, Heilongjiang, China
| | - G Y Chen
- Department of Cardiology, The First Affiliated Hospital of Harbin Medical University, Nangang District, Harbin, Heilongjiang, China
| | - S S Yang
- Department of Cardiology, The First Affiliated Hospital of Harbin Medical University, Nangang District, Harbin, Heilongjiang, China
| | - Y Tian
- Department of Cardiology, The First Affiliated Hospital of Harbin Medical University, Nangang District, Harbin, Heilongjiang, China
| | - T Ge
- Department of Medical, Second Hospital of Harbin City, Harbin, Heilongjiang, China
| | - H Qin
- Department of Medical, Second Hospital of Harbin City, Harbin, Heilongjiang, China
| | - W Han
- Department of Cardiology, The First Affiliated Hospital of Harbin Medical University, Nangang District, Harbin, Heilongjiang, China
| | - H Y Chang
- Department of Cardiology, The First Affiliated Hospital of Harbin Medical University, Nangang District, Harbin, Heilongjiang, China
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15
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Genovese M, Hsia E, Belkowski S, Chien C, Masterson T, Thurmond R, Manthey C, Yan D, Ge T, Greenspan A. THU0133 Results from A Phase 2A, Randomized, Multicenter, Double-Blind, Placebo-Controlled, Parallel-Group Study of Jnj-40346527, an Oral CSF-1R Inhibitor, in Patients with Active Rheumatoid Arthritis despite Disease-Modifying Antirheumatic Drug Therapy. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.2404] [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: 11/04/2022]
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16
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Wang L, Peng H, Ge T, Liu T, Hou X, Li Y. Identification of differentially accumulating pistil proteins associated with self-incompatibility of non-heading Chinese cabbage. Plant Biol (Stuttg) 2014; 16:49-57. [PMID: 23581423 DOI: 10.1111/plb.12016] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [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: 09/16/2012] [Accepted: 01/19/2013] [Indexed: 05/09/2023]
Abstract
Non-heading Chinese cabbage (Brassica campestris L. ssp. chinensis Makino), an important vegetable crop in China, exhibits a typical sporophytic self-incompatibility (SI) system. To better understand the mechanism of SI response and identify potential candidate proteins involved in the SI system of this vegetable crop, the proteomic approach was taken to identify differential accumulating pistil proteins. Pistils were collected at 0 h and 2 h after self-pollination at anthesis in self-incompatible and compatible lines of non-heading Chinese cabbage, and total proteins were extracted and separated by two-dimensional gel electrophoresis (2-DE). A total of 25 protein spots that displayed differential abundance were identified by matrix-assisted laser desorption/ionisation-time of flight mass spectrometry (MALDI-TOF/TOF MS) and peptide mass fingerprinting (PMF). Among them, 22 protein spots were confidently established. The mRNA levels of the corresponding genes were detected by quantitative RT-PCR. The 22 identified protein spots are involved in energy metabolism (four), protein biosynthesis (three), photosynthesis (six), stress response and defence (five), and protein degradation (four). Among these potential candidate proteins, UDP-sugar pyrophosphorylase could be involved in sucrose degradation to influence pollen germination and growth. Glutathione S-transferases could be involved in pollen maturation, and affect pollen fertility. Senescence-associated cysteine protease, which is related to programmed cell death, could be mainly related to self pollen recognition of non-heading Chinese cabbage. The study will contribute to further investigations of molecular mechanism of sporophytic SI in Brassicaceae.
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Affiliation(s)
- L Wang
- Horticultural Department, Nanjing Agricultural University, Nanjing, China
- State Key Laboratory of Crop Genetics, Germplasm Enhancement, Nanjing, China
| | - H Peng
- Horticultural Department, Nanjing Agricultural University, Nanjing, China
- State Key Laboratory of Crop Genetics, Germplasm Enhancement, Nanjing, China
| | - T Ge
- Horticultural Department, Nanjing Agricultural University, Nanjing, China
| | - T Liu
- Horticultural Department, Nanjing Agricultural University, Nanjing, China
- State Key Laboratory of Crop Genetics, Germplasm Enhancement, Nanjing, China
| | - X Hou
- Horticultural Department, Nanjing Agricultural University, Nanjing, China
- State Key Laboratory of Crop Genetics, Germplasm Enhancement, Nanjing, China
- Key Laboratory of Southern Vegetable Crop Genetic Improvement, Ministry of Agriculture, Nanjing, China
| | - Y Li
- Horticultural Department, Nanjing Agricultural University, Nanjing, China
- State Key Laboratory of Crop Genetics, Germplasm Enhancement, Nanjing, China
- Key Laboratory of Southern Vegetable Crop Genetic Improvement, Ministry of Agriculture, Nanjing, China
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17
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Yang L, Guo GQ, Chen LY, Huang CL, Ge T, Chen D, Liaw PK, Saksl K, Ren Y, Zeng QS, LaQua B, Chen FG, Jiang JZ. Atomic-scale mechanisms of the glass-forming ability in metallic glasses. Phys Rev Lett 2012; 109:105502. [PMID: 23005298 DOI: 10.1103/physrevlett.109.105502] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2012] [Revised: 07/07/2012] [Indexed: 06/01/2023]
Abstract
The issue, composition dependence of glass-forming ability (GFA) in metallic glasses (MG), has been investigated by systematic experimental measurements coupled with theoretical calculations in Cu-Zr and Ni-Nb alloy systems. It is found that the atomic-level packing efficiency strongly relates to their GFA. The best GFA is located at the largest difference in the packing efficiency of the solute-centered clusters between the glassy and crystal alloys in both MG systems. This work provides an understanding of GFA from atomic level and will shed light on the development of new MGs with larger critical sizes.
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Affiliation(s)
- L Yang
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, Peoples Republic of China.
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18
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Abstract
Mutations of the p53 tumor-suppressor gene are the most frequent genetic abnormality in soft tissue sarcomas. Because these rare tumors also respond poorly to standard chemotherapy and bear a 50% 5-year mortality rate, we investigated the possible therapeutic benefits of p53 gene restoration in sarcomas. We constructed Ad5p53, which is an E1A-deleted, replication-deficient adenovirus expressing a cytomegalovirus promoter-driven wild-type p53 cDNA with a Flag sequence tag. SKLMS-1 human leiomyosarcoma cells containing a mis-sense p53 point mutation were effectively transduced with Ad5p53. Increasing levels of Flag-p53 protein, as well as dose-dependent p21Cip1 induction, were observed through a dose range of 10-500 plaque-forming units (PFU)/cell. In vitro administration of Ad5p53 as a single 100 PFU/cell dose caused 40-60% growth inhibition of SKLMS-1 cells at posttreatment days 4, 6, and 8 compared with untreated or viral control treated-cells (P < .05, Student's t test). Relative to these same controls, in vivo treatment of SKLMS-1-bearing severe combined immunodeficient mice with 6 x 10(9) PFU of Ad5p53 by intratumoral injection resulted in a 35-day tumor growth delay and complete tumor regression in 40% of mice (P < .05, Student's t test). The expression of virally derived p53 mRNA in Ad5p53-treated tumor tissues was detected in treated tumor specimens by reverse transcriptase polymerase chain reaction. Reduced intratumoral cellularity and the presence of p53 staining in adjacent normal tissue, consistent with delivery of exogenous p53 to the tumor target, were evident only in Ad5p53-treated tumors after immunohistochemical staining for p53. These results indicate that wild-type p53 gene restoration in sarcomas retards tumor growth and may come to be usefully applied to the clinical treatment of this disease as a single regimen or in combination with conventional therapies.
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MESH Headings
- Adenoviruses, Human/genetics
- Animals
- Antineoplastic Agents/administration & dosage
- Female
- Genes, p53
- Genetic Therapy/methods
- Genetic Vectors/administration & dosage
- Genetic Vectors/chemical synthesis
- Growth Inhibitors/administration & dosage
- Humans
- Injections, Intralesional
- Leiomyosarcoma/genetics
- Leiomyosarcoma/pathology
- Leiomyosarcoma/therapy
- Leiomyosarcoma/virology
- Mice
- Mice, SCID
- Neoplasm Transplantation
- Sarcoma, Experimental/genetics
- Sarcoma, Experimental/pathology
- Sarcoma, Experimental/therapy
- Sarcoma, Experimental/virology
- Transplantation, Heterologous
- Tumor Cells, Cultured
- Tumor Suppressor Protein p53/pharmacology
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Affiliation(s)
- M Milas
- Department of Surgical Oncology, MD Anderson Cancer Center, Houston, Texas 77030, USA
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19
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Ge T, Vanhoutte PM, Boulanger CM. Increased response to prostaglandin H2 precedes changes in PGH synthase-1 expression in the SHR aorta. Zhongguo Yao Li Xue Bao 1999; 20:1087-92. [PMID: 11189197] [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: 02/19/2023]
Abstract
AIM To determine the expression of PGH synthase-1 and the sensitivity of vascular smooth muscle to PGH2 in the aorta from the SHR at an age when no endothelium-dependent contractions to acetylcholine are observed under control conditions. METHODS All experiments were performed in parallel on aortas from 20-wk-old SHR and Wistar-Kyoto normotensive rats (WKY). Rings, with or without endothelium, were suspended in conventional organ chambers for the recording of changes in isometric force. The expression of PGH synthase-1 was evaluated by reverse transcription-polymerase chain reaction (RT-PCR) and Western blot analysis. RESULTS Under control conditions acetylcholine did not cause contractions of rings with or without endothelium. However, in the presence of nitro-L-arginine (NLA, an inhibitor of nitric-oxide synthase), it evoked endothelium-dependent contraction in the SHR but not in the WKY aortas. The expression of PGH synthase-1 was comparable in the aortas of both strains (with and without endothelium). PGH2 caused greater contractions in rings without endothelium from the SHR than those from WKY, while U46,619 evoked a comparable response, in aortas from both strains. CONCLUSION In the aorta of 20-wk-old SHR, endothelium-dependent contractions to acetylcholine are observed only when the production of nitric oxide is prevented. They are associated with an augmented sensitivity of the smooth muscle to PGH2, but not with an increased expression of PGH synthase-1.
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Affiliation(s)
- T Ge
- Center for Experimental Therapeutics, Baylor College of Medicine, Houston, TX 77030, USA
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20
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Pollock R, Lang A, Ge T, Sun D, Tan M, Yu D. Wild-type p53 and a p53 temperature-sensitive mutant suppress human soft tissue sarcoma by enhancing cell cycle control. Clin Cancer Res 1998; 4:1985-94. [PMID: 9717829] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Soft-tissue sarcomas are a heterogeneous group of tumors that are putatively mesenchymal in origin. Therapeutic advances in this disease have been limited over the past several decades. Approximately one-half of all patients will ultimately succumb, usually to uncontrollable pulmonary metastases. Although little is known about the underlying molecular determinants driving soft-tissue sarcoma inception, proliferation, and metastasis, mutation of the p53 gene is the most frequently detected molecular alteration in this disease. Accordingly, we were interested in determining whether transduction of wild-type (wt) p53 into soft-tissue sarcomas bearing mutated p53 genes might alter the malignant phenotype. SKLMS-1 is a human-derived leiomyosarcoma cell line with a codon 245 p53 point mutation. Cationic liposome was used to transfect wt p53 or 143Ala temperature-sensitive mutant p53 into this cell line. SKLMS-1 stable transfectants expressing wt p53 had decreased cell proliferation in vitro, decreased in vitro colony formation in soft agar, and decreased tumorigenicity in severe combined immunodeficient mice in vivo. Flow cytometric analysis of cell cycle components demonstrated markedly increased G1 cell cycle arrest and decreased entry into S phase, which corresponded to the induction of p21cip1 protein in the transfectants. Using SKLMS-1 stable transfectants expressing the 143Ala p53 temperature-sensitive mutant, we demonstrated the kinetics of and the causal relationship between wt p53 expression, the wt p53-dependent induction of cell cycle inhibitor p21cip1, and inhibition of cell cycle progression in p53-transfected SKLMS-1 cells. The ability to restore wt p53 growth-regulatory functions in soft-tissue sarcoma may ultimately be useful as a future therapy in patients with soft-tissue sarcomas.
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Affiliation(s)
- R Pollock
- Department of Surgical Oncology, The University of Texas M.D. Anderson Cancer Center, Houston 77030, USA
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21
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Milas M, Feig B, Yu D, Oriuchi N, Cromeens D, Ge T, Wong FC, Kim EE, Pollock R. Isolated limb perfusion in the sarcoma-bearing rat: a novel preclinical gene delivery system. Clin Cancer Res 1997; 3:2197-203. [PMID: 9815615] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
Reliable site-specific delivery of genetic constructs remains a challenging component of gene-based therapy of solid tumors. Isolated limb perfusion (ILP) continues to be evaluated for treatment of locally advanced soft tissue sarcomas because this approach uniquely directs therapeutic agents into the tumor-bearing extremity without significant systemic leak. In light of these considerations, we tested the hypothesis that ILP could be used to deliver genes carried in viral vectors to the sarcoma-bearing rat extremity, resulting in demonstrable gene transfer into the tumor. ILP was performed in rats by cannulating the femoral artery and vein, isolating the hind limb from systemic circulation by tourniquet, and cycling perfusate for 15 min at a rate of 2.4 ml/min. Leakage into the systemic circulation was 7.5% of the total perfusate concentrated in the isolated limb, as determined by perfusion with technetium 99m-tagged RBCs. We used the ILP technique to perfuse rat hind limbs bearing syngeneic fibrosarcoma tumor nodules with the replication-defective adenovirus Ad5LacZ, which expresses the bacterial beta-galactosidase. 5-Bromo-4-chloro-3-indolyl-beta-D-galactoside staining of the perfused limb tissues confirmed gene transfer to the tumor and peritumoral tissue, demonstrating that the tumor was part of the perfusion circuit and that gene therapy delivered via this method was feasible. These results suggest that adaptation of this preclinical gene delivery model to administer genetic constructs aimed at controlling tumor growth may prove beneficial to patients with extremity sarcomas.
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Affiliation(s)
- M Milas
- Departments of Surgical Oncology, Nuclear Medicine, and Veterinary Medicine, The University of Texas M.D. Anderson Cancer Center, Houston, Texas 77030, USA
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22
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Day NS, Ge T, Codina J, Birnbaumer L, Vanhoutte PM, Boulanger CM. Gi proteins and the response to 5-hydroxytryptamine in porcine cultured endothelial cells with impaired release of EDRF. Br J Pharmacol 1995; 115:822-7. [PMID: 8548182 PMCID: PMC1908515 DOI: 10.1111/j.1476-5381.1995.tb15006.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
1. The receptor-mediated release of endothelium-derived relaxing factor(s) (EDRF) requires the presence of different functional G proteins in endothelial cells. Release of EDRF in response to 5-hydroxytryptamine (5-HT), which involves activation of pertussis toxin-sensitive Gi proteins, is impaired in both regenerated endothelium of the coronary artery following balloon catheterization and in porcine cultured endothelial cells. This study used porcine cultured endothelial cells as a model of regenerated endothelium to determine if the abnormal release of EDRF in response to 5-HT may be associated with the loss of functional pertussis toxin-sensitive Gi proteins. 2. Binding studies on porcine cultured endothelial cells demonstrated specific binding sites for [3H]-5-HT. Scatchard analyses revealed a single binding site for [3H]-5-HT with Kd of 7.2 +/- 3.5 nM and maximal binding (Bmax) of 121.4 +/- 51.3 fmol mg-1 protein. Binding of [3H]-5-HT was displaced by methiothepin (5-HT1 and 5-HT2 antagonist; Ki = 6.2 +/- 1.2 nM), but not by ketanserin (preferential 5-HT2 antagonist). 3. Gi alpha 1 protein was expressed in cultured but not in native endothelial cells. Gi alpha 2 and Gi alpha 3 proteins were expressed to significant levels in porcine native and cultured endothelial cells, as detected by Northern and Western blot analysis. 4. In membranes from cultured endothelial cells, two bands of 40 and 41 kDa, which corresponded to the Gi alpha 2 and the combination of Gi alpha 3-Gi alpha 1 proteins, respectively, were ADP-ribosylated by pertussis toxin. The labelling intensity was Gi alpha 2>Gi alpha 3-Gi alpha l and the amount of ADP-ribosylation was not different between porcine native and cultured endothelial cells. Stimulation of the cultured cells with 5-HT (3 x 10-6 M; 4 min) decreased significantly further ADP-ribosylation of Gi alpha 2 by pertussis toxin, but not that of Gi alpha 3 and/or Gi alpha l.5. The present results suggest that porcine endothelial cell culture may lead to the abnormal expression of Gi alpha l protein and that the dysfunctional release of EDRF from cultured porcine endothelial cells in response to 5-HT is not associated with the loss of Gi alpha proteins or the absence of 5-HT binding sites.
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Affiliation(s)
- N S Day
- Department of Medicine, Baylor College of Medicine, Houston, Texas 77030, USA
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23
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Ge T, Hughes H, Junquero DC, Wu KK, Vanhoutte PM, Boulanger CM. Endothelium-dependent contractions are associated with both augmented expression of prostaglandin H synthase-1 and hypersensitivity to prostaglandin H2 in the SHR aorta. Circ Res 1995; 76:1003-10. [PMID: 7758154 DOI: 10.1161/01.res.76.6.1003] [Citation(s) in RCA: 132] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Prostaglandin H2 (PGH2 [endoperoxide]) is an immediate product of prostaglandin H (PGH) synthase activity (cyclooxygenase) and a likely candidate to mediate endothelium-dependent contractions evoked by acetylcholine in the aorta of the spontaneously hypertensive rat (SHR). Experiments were designed to investigate whether or not endothelium-dependent contractions were associated with an increased expression of PGH synthase, an augmented acetylcholine-induced release of PGH2, and/or a hypersensitivity of the smooth muscle to endoperoxides in SHR aorta compared with normotensive Wistar-Kyoto (WKY) aorta. In SHR aorta, endothelium-dependent contractions to acetylcholine were abolished by tenidap (10(-8) mol/L), a preferential PGH synthase-1 inhibitor, but slightly impaired by NS-398 (10(-6) mol/L), a preferential PGH synthase-2 inhibitor. PGH synthase-1 expression, which was evaluated by both reverse transcriptase-polymerase chain reaction and Western blotting, was about twofold greater in preparations with endothelium from SHR than from WKY rats. There was no difference in PGH synthase-1 expression between preparations with and those without endothelium in both strains. In SHR but not WKY aortas, acetylcholine (10(-5) mol/L, 5 minutes) caused a significant endothelium-dependent release of PGH2 as measured by gas chromatography/mass spectrometry. PGH2 evoked more potent contractions in rings without endothelium from SHR than from WKY rats, whereas the thromboxane analogue U46619 and prostaglandin F2 alpha caused a comparable response in both preparations. These results show that endothelium-dependent contractions to acetylcholine in SHR aorta are associated with a greater expression of PGH synthase-1, a significant release of PGH2, and a hypersensitivity of the smooth muscle to the endoperoxide.
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MESH Headings
- Acetylcholine/pharmacology
- Analysis of Variance
- Animals
- Aorta/drug effects
- Aorta/immunology
- Aorta/physiology
- Autoradiography
- Blotting, Western
- Endothelium, Vascular/physiology
- Gene Amplification
- Hypersensitivity
- Male
- Muscle Contraction
- Muscle, Smooth, Vascular/immunology
- Muscle, Smooth, Vascular/physiology
- Polymerase Chain Reaction
- Prostaglandin H2
- Prostaglandin-Endoperoxide Synthases/analysis
- Prostaglandin-Endoperoxide Synthases/genetics
- Prostaglandins H/analysis
- Prostaglandins H/immunology
- RNA, Messenger/genetics
- Rats
- Rats, Inbred SHR
- Rats, Inbred WKY
- Transcription, Genetic
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Affiliation(s)
- T Ge
- Center for Experimental Therapeutics, Baylor College of Medicine, Houston, TX 77030, USA
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24
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Abstract
Homeobox genes from the urochordates Styela clava (AHox2) and S. plicata (AHox3) were cloned and analyzed. The two genes are homologous and Antennapedia-like. The homeobox regions have 87% identity at the nucleotide level and are identical at the amino-acid level. No introns are present in the homeobox region of AHox3, and AHox3 is represented at a low copy number per haploid genome. AHox2 and AHox3 represent the second type of homeobox gene found in this evolutionarily and developmentally important group of organisms.
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Affiliation(s)
- T Ge
- Department of Biology, University of Houston, TX 77204-5513
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25
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Scott-Burden T, Elizondo E, Ge T, Boulanger CM, Vanhoutte PM. Simultaneous activation of adenylyl cyclase and protein kinase C induces production of nitric oxide by vascular smooth muscle cells. Mol Pharmacol 1994; 46:274-82. [PMID: 7521513] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Rat aortic smooth muscle cells produced large quantities of nitric oxide (NO) after exposure to interleukin-1 beta, and this was depressed in the presence of the protein kinase C inhibitor bisindolylmaleimide. Intracellular cAMP levels were elevated mildly in cytokine-treated smooth muscle cells, and the presence of forskolin enhanced both the cAMP levels and NO production. Inhibition of GTP:cyclohydrolase I by 2,4-diamino-6-hydroxypyrimidine attenuated NO production by interleukin-1 beta-treated cells. GTP:cyclohydrolase is the regulatory enzyme for de novo tetrahydrobiopterin synthesis, and the latter is a required cofactor for NO synthase activity. Treatment of smooth muscle cells with forskolin induced GTP:cyclohydrolase mRNA expression, and simultaneous treatment of cells with forskolin and phorbol esters elicited NO production. Angiotensin II and arginine-vasopressin, acknowledged agonists for protein kinase C, elicited production of NO by forskolin-treated smooth muscle cells. These observations confirm the importance of GTP:cyclohydrolase activity for NO production by cultured smooth muscle cells and implicate both adenylyl cyclase and protein kinase C in this process.
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Affiliation(s)
- T Scott-Burden
- Center for Experimental Therapeutics, Baylor College of Medicine, Houston, Texas 77030
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26
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Scott-Burden T, Elizondo E, Ge T, Boulanger CM, Vanhoutte PM. Growth factor regulation of interleukin-1 beta-induced nitric oxide synthase and GTP: cyclohydrolase expression in cultured smooth muscle cells. Biochem Biophys Res Commun 1993; 196:1261-6. [PMID: 7504472 DOI: 10.1006/bbrc.1993.2388] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Induction of NO synthase expression by interleukin-1 beta in cultured vascular smooth muscle cells from rat aortas was accompanied by simultaneous induction of GTP: cyclohydrolase I. This enzyme regulates the de novo synthesis pathway for tetrahydrobiopterin, an essential cofactor for the catalytic conversion of L-arginine to L-citrulline and NO by inducible NO synthase. Inhibition of GTP: cyclohydrolase attenuated NO production by interleukin-1 beta-stimulated smooth muscle cells. Peptide growth factors such as fibroblast growth factor, platelet-derived growth factor and transforming growth factor beta 1 and the protease thrombin have been shown to modulate the production NO by cytokine-treated smooth muscle cells. These peptide agonists also regulated the induction of NO synthase and GTP: cyclohydrolase mRNA expression.
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Affiliation(s)
- T Scott-Burden
- Center for Experimental Therapeutics, Baylor College of Medicine, Houston, TX 77030
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27
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Ge T, Wang G, Zhao B. [HTLV-I associated myelopathy]. Zhonghua Shen Jing Jing Shen Ke Za Zhi 1992; 25:182-4. [PMID: 1395949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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28
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Xiang MQ, Ge T, Tomlinson CR, Klein WH. Structure and promoter activity of the LpS1 genes of Lytechinus pictus. Duplicated exons account for LpS1 proteins with eight calcium binding domains. J Biol Chem 1991; 266:10524-33. [PMID: 2037596] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
The LpS1 genes of the sea urchin Lytechinus pictus are activated early in development in aboral ectoderm cells. They therefore have ontogenic properties similar to their counterparts in Stronglyocentrotus purpuratus, the Spec genes. Both gene families encode proteins belonging to the calmodulin superfamily as evidenced by the presence of distinct EF-hand (helix-loop-helix) domains. The presence of eight EF-hand domains in LpS1 proteins suggests that the LpS1 genes arose from a duplication of an ancestral Spec-like gene. The LpS1 genes were further analyzed to increase our understanding of the mechanisms underlying their evolution and activation in aboral ectoderm cells. Genomic DNA blot analysis showed two LpS1 genes, LpS1 alpha and LpS1 beta, which did not appear to be closely linked. LpS1 genomic clones were isolated by screening an L. pictus genomic library with an LpS1 cDNA clone, and partial gene structures for both LpS1 alpha and LpS1 beta were constructed. These revealed internal duplication of the LpS1 genes that accounted for the eight EF-hand domains in the LpS1 proteins. Duplication of exon 1 in both genes suggested four different LpS1 proteins could be derived from the LpS1 genes. Primer extension to map the transcriptional initiation sites of the LpS1 genes and sequencing analysis showed there was little in common among the 5'-flanking regions of the LpS1 and Spec genes except for the presence of a binding site for the transcription factor USF. A sea urchin gene-transfer expression system showed that 762 base pairs (bp) of 5'-flanking DNA and 17 bp of 5'-untranslated leader sequence of the LpS1 beta gene were sufficient for correct temporal and spatial expression of reporter chloramphenicol acetyltransferase and lacZ genes in sea urchin embryos. Deletions at the 5' end to either 511 or 368 bp resulted in a 3-4 fold decrease in chloramphenicol acetyltransferase activity and disrupted the exclusive activation of the lacZ gene in aboral ectodermal cells. Based on a lineage analysis among the LpS1 and Spec gene families and other related genes, we propose a model in which LpS1 genes evolved from a series of duplications of an ancestral Spec-like gene.
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Affiliation(s)
- M Q Xiang
- University of Texas M. D. Anderson Cancer Center, Department of Biochemistry and Molecular Biology, Houston 77030
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29
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Xiang M, Ge T, Tomlinson C, Klein W. Structure and promoter activity of the LpS1 genes of Lytechinus pictus. Duplicated exons account for LpS1 proteins with eight calcium binding domains. J Biol Chem 1991. [DOI: 10.1016/s0021-9258(18)99256-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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