1
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Chen Z, Yao L, Liu Y, Zhu P. LncTIC1 interacts with β-catenin to drive liver TIC self-renewal and liver tumorigenesis. Cancer Lett 2018; 430:88-96. [DOI: 10.1016/j.canlet.2018.05.023] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 04/25/2018] [Accepted: 05/15/2018] [Indexed: 01/15/2023]
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2
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Qi F, Wu J, Li H, Ma G. Recent research and development of PLGA/PLA microspheres/nanoparticles: A review in scientific and industrial aspects. Front Chem Sci Eng 2018. [DOI: 10.1007/s11705-018-1729-4] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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3
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Huang G, Jiang H, He Y, Lin Y, Xia W, Luo Y, Liang M, Shi B, Zhou X, Jian Z. LncMAPK6 drives MAPK6 expression and liver TIC self-renewal. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2018; 37:105. [PMID: 29764463 PMCID: PMC5952634 DOI: 10.1186/s13046-018-0770-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Accepted: 04/27/2018] [Indexed: 01/06/2023]
Abstract
Background Liver tumor initiating cells (TICs) have self-renewal and differentiate capacities, and largely contribute to tumor initiation, metastasis and drug resistance. MAPK signaling is a critical pathway in many biological processes, while its role in liver TICs hasn’t been explored. Methods Online-available dataset was used for unbiased screening. Liver TICs were examined CD133 FACS or oncosphere formation. TIC self-renewal was detected by oncosphere formation and tumor initiation assay. LncRNA function was detected by loss of function or gain of function assays. The molecular mechanism of lncRNA was explored by RNA pulldown, RNA immunoprecipitation, ChIP, western blot and double FISH. Results Here, we examined the expression profiles of MAPK components (MAPKs, MAP2Ks, MAP3Ks, MAP4Ks), and found MAPK6 is most highly expressed in liver cancer samples. Moreover, a divergent lncRNA (long noncoding RNA) of MAPK6, termed lncMAPK6 here, is also overexpressed along with liver tumorigenesis. LncMAPK6 promotes liver tumor propagation and TIC self-renewal through MAPK6. LncMAPK6 interacts with and recruits RNA polymerase II to MAPK6 promoter, and finally activates the transcription of MAPK6. Through MAPK6 transcriptional regulation, lncMAPK6 drives MARK signaling activation. LncMAPK6-MAPK6 pathway can be used for liver TIC targeting. Altogether, lncMAPK6 promotes MARK signaling and the self-renewal of liver TICs through MAPK6 expression. Conclusion MAPK6 was the most highly expressed MAPK component in liver cancer and liver TICs and lncMAPK6 participated in the transcriptional regulation of MAPK6in cis. This work revealed the importance role of MAPK signaling in liver TIC self-renewal and added a new layer for liver TIC and MAPK6 expression regulation.
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Affiliation(s)
- Guanqun Huang
- Department of general surgery, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangdong Sheng, China
| | - Hui Jiang
- Department of Abdominal Oncology, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangdong Sheng, China
| | - Yueming He
- Department of Abdominal Oncology, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangdong Sheng, China
| | - Ye Lin
- Department of General Surgery, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangdong Sheng, China
| | - Wuzheng Xia
- Department of General Surgery, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangdong Sheng, China
| | - Yuanwei Luo
- Department of general surgery, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangdong Sheng, China
| | - Min Liang
- Department of Abdominal Oncology, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangdong Sheng, China
| | - Boyun Shi
- Department of Abdominal Oncology, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangdong Sheng, China
| | - Xinke Zhou
- Department of Abdominal Oncology, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangdong Sheng, China.
| | - Zhixiang Jian
- Department of General Surgery, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangdong Sheng, China.
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4
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Luo J, Liu L, Zhou N, Shen J, Sun Q, Zhu Y, Chen M. miR-519b-3p promotes responsiveness to preoperative chemoradiotherapy in rectal cancer patients by targeting ARID4B. Gene 2018; 655:84-90. [DOI: 10.1016/j.gene.2018.02.056] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Accepted: 02/22/2018] [Indexed: 02/07/2023]
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5
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Chen Z, Gao Y, Yao L, Liu Y, Huang L, Yan Z, Zhao W, Zhu P, Weng H. LncFZD6 initiates Wnt/β-catenin and liver TIC self-renewal through BRG1-mediated FZD6 transcriptional activation. Oncogene 2018. [PMID: 29535420 PMCID: PMC5992127 DOI: 10.1038/s41388-018-0203-6] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Liver tumor-initiating cells (TICs), the drivers for liver tumorigenesis, accounts for liver tumor initiation, metastasis, drug resistance and relapse. Wnt/β-catenin signaling pathway emerges as a critical modulator in liver TIC self-renewal. However, the molecular mechanism of Wnt/β-catenin initiation in liver tumorigenesis and liver TICs is still elusive. Here, we examined the expression pattern of 10 Wnt receptors (FZD1–FZD10), and found only FZD6 is overexpressed along with liver tumorigenesis. What’s more, a divergent lncRNA of FZD6, termed lncFZD6, is also highly expressed in liver cancer and liver TICs. LncFZD6 drives liver TIC self-renewal and tumor initiation capacity through FZD6-dependent manner. LncFZD6 interacts with BRG1-embedded SWI/SNF complex and recruits it to FZD6 promoter, and thus drives the transcriptional initiation of FZD6 by chromatin remodeling. WNT5A, a ligand of FZD6, is highly expressed in liver non-TICs and drives the self-renewal of liver TICs through lncFZD6-BRG1-FZD6-dependent manner. Through FZD6 transcriptional regulation in cis, lncFZD6 activates Wnt/β-catenin signaling in liver TICs. LncFZD6-BRG1-Wnt5A/β-catenin pathway can serve as a target for liver TIC elimination. Altogether, lncFZD6 promotes Wnt/β-catenin activation and liver TIC self-renewal through BRG1-dependent FZD6 expression.
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Affiliation(s)
- Zhenzhen Chen
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, China.
| | - Yanfeng Gao
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, China.,Collaborative Innovation Center of New Drug Research and Safety Evaluation, Zhengzhou, 450001, Henan Province, China
| | - Lintong Yao
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, China
| | - Yating Liu
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, China
| | - Lan Huang
- The First Affiliated Hospital, Zhengzhou University, Zhengzhou, 450052, China
| | - Zhongyi Yan
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, China
| | - Wenshan Zhao
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, China
| | - Pingping Zhu
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, China.
| | - Haibo Weng
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, China.
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6
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Fu X, Lin J, Qin F, Yang Z, Ding Y, Zhang Y, Han L, Zhu X, Zhang Q. LncAPC drives Wnt/β-catenin activation and liver TIC self-renewal through EZH2 mediated APC transcriptional inhibition. Mol Carcinog 2018; 57:408-418. [PMID: 29144570 DOI: 10.1002/mc.22764] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 11/09/2017] [Accepted: 11/14/2017] [Indexed: 12/14/2022]
Abstract
Liver tumor initiating cells (TICs), a small subset cells in tumor bulk, are responsible for liver tumor initiation, metastasis, and relapse. However, the regulatory mechanism of liver TICs remains largely unknown. Here we found a long noncoding RNA lncAPC, locating near from APC locus, was highly expressed in liver cancer and liver TICs. LncAPC was required for liver TIC self-renewal. Silencing and overexpressing lncAPC showed impaired and enhanced sphere formation capacity of liver TICs, respectively. By recruiting EZH2 to APC promoter, LncAPC inhibits APC transcription and thus drives the activation of Wnt/β-catenin signaling. Attenuate binding between EZH2 and APC promoter was observed upon lncAPC knockdown. What is more, lncAPC-EZH2-APC axis can be targeted to eliminate liver TICs. Altogether, LncAPC promotes liver TIC self-renewal through EZH2-dependent APC transcriptional inhibition.
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Affiliation(s)
- Xiaomin Fu
- Department of Histology and Embryology, College of Basic Medicine, Zhengzhou University, Henan, China
- Department of Cancer Biology Immunotherapy, The Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou University, Henan, China
| | - Jizhen Lin
- Department of Otolaryngology, Medical School, University of Minnesota, Twin Cities Campus, Minneapolis, Minnesota
| | - Fujun Qin
- Department of Pathology, School of Medicine, University of Virginia, Virginia
| | - Zihe Yang
- Department of Nuclear Medicine, The Affiliated Beijing Anzhen Hospital of Capital Medical University, Capital Medical University, Beijing, China
| | - Yuechao Ding
- Department of Hepatopancreatobiliary Surgery, The Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou University, Henan, China
| | - Yong Zhang
- Department of Cancer Biology Immunotherapy, The Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou University, Henan, China
| | - Lu Han
- Department of Cancer Biology Immunotherapy, The Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou University, Henan, China
| | - Xiaoyan Zhu
- Department of Histology and Embryology, College of Basic Medicine, Zhengzhou University, Henan, China
| | - Qinxian Zhang
- Department of Histology and Embryology, College of Basic Medicine, Zhengzhou University, Henan, China
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7
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Wang L, Zhan X, Shen X, Li M, Yang J, Yu W, Chen H, Jin B, Mao Z. P16 promotes the growth and mobility potential of breast cancer both in vitro and in vivo: the key role of the activation of IL-6/JAK2/STAT3 signaling. Mol Cell Biochem 2018; 446:137-148. [PMID: 29388151 DOI: 10.1007/s11010-018-3281-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Accepted: 01/16/2018] [Indexed: 11/25/2022]
Abstract
P16 is the product of cyclin-dependent kinase 2 (CDKN2A) gene and plays multi-pronged roles in the cancer progression. Breast cancer (BC) is the most commonly diagnosed cancer type among females. In the current study, the potential function of P16 in the growth and metastasis of BC was investigated. Firstly, the expression statuses of P16 in different cancer types were investigated using Oncomine database and validated with corresponding cancer cell lines. Afterwards, the expression of P16 was knocked down in BC cell line BT-549 and the effect on the cell proliferation, sensitivity to paclitaxel (TAX), apoptosis, migration, and invasion abilities was assessed using CCK-8, Edu, flow cytometry, scratch, and transwell assays, respectively. The influence of P16 inhibition and P16 overexpression on the activity of IL-6/JAK/STAT3 signaling was explored. Additionally, the effect of P16 inhibition on the tumor growth was verified with a BC xenograft mice model. The abnormal expression of P16 was detected in BC cell line BT-549 as well as colorectal cancer and osteosarcoma cell lines. The inhibition of P16 suppressed the cell proliferation, invasion, and migration abilities while induced the apoptosis and sensitivity to TAX in BT-549 cells. At molecular level, P16 knockdown inhibited the expression of IL6ST and Survivin, and the phosphorylation of JAK2 and STAT3. However, the induced expression of P16 in P16-knockdown BT-549 cells restored the activity of IL-6/JAK2/STAT3 pathway. The results of in vitro assays were confirmed with BC xenograft models: the inhibition of P16 decreased the tumor growth rate. Findings outlined in the current study demonstrated that the inhibition of P16 decreased the growth and metastasis potential of BC cells by inhibiting IL-6/JAK2/STAT3 signaling.
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Affiliation(s)
- Le Wang
- The Department of Biochemistry and Molecular Biology, Health Science Center, Peking University, 38 Xueyuan Road, Beijing, 100191, China
| | - Xiangwen Zhan
- The Department of Biochemistry and Molecular Biology, Health Science Center, Peking University, 38 Xueyuan Road, Beijing, 100191, China
| | - Xiaomeng Shen
- The Department of Biochemistry and Molecular Biology, Health Science Center, Peking University, 38 Xueyuan Road, Beijing, 100191, China
| | - Mingzhe Li
- The Department of Biochemistry and Molecular Biology, Health Science Center, Peking University, 38 Xueyuan Road, Beijing, 100191, China
| | - Jianming Yang
- The Department of Biochemistry and Molecular Biology, Health Science Center, Peking University, 38 Xueyuan Road, Beijing, 100191, China
| | - Wenhua Yu
- The Department of Biochemistry and Molecular Biology, Health Science Center, Peking University, 38 Xueyuan Road, Beijing, 100191, China
| | - Hao Chen
- The Department of Biochemistry and Molecular Biology, Health Science Center, Peking University, 38 Xueyuan Road, Beijing, 100191, China
| | - Bo Jin
- Department of Clinical Laboratory, Peking University First Hospital, 8 Xishiku Road, Beijing, 100034, China.
| | - Zebin Mao
- The Department of Biochemistry and Molecular Biology, Health Science Center, Peking University, 38 Xueyuan Road, Beijing, 100191, China.
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8
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Yuan Q, Yu H, Chen J, Song X, Sun L. Knockdown of pyruvate kinase type M2 suppresses tumor survival and invasion in osteosarcoma cells both in vitro and in vivo. Exp Cell Res 2018; 362:209-216. [PMID: 29155364 DOI: 10.1016/j.yexcr.2017.11.020] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 11/10/2017] [Accepted: 11/15/2017] [Indexed: 12/24/2022]
Abstract
Osteosarcoma (OS) is the mostly diagnosed primary bone malignancy. Emerging evidence indicates that the activity of pyruvate kinase M2 (PKM2) isoform is crucial for the survival of tumor cells. In the present study, the effect of PKM2 knockdown on the proliferation and migration of OS cells were assessed both in vitro and in vivo. Small hairpin RNA (shRNA) technology were employed to suppress the expression of PKM2 in MG-63 and Saos-2 cell lines. In vitro, shRNA-mediated knockdown of PKM2 efficiently inhibited cell proliferation, and induced G1 cell cycle arrest and apoptosis in both cell lines, which was associated with decreased expressions of cyclin D1 and Bcl-2 as well as increased expressions of Bax, cleaved-caspase-3, and cleaved-PARP. The invasion and migration potential of OS cell lines were also inhibited by PKM2 knockdown through the regulating effect of PKM2 on MMP-2 and VEGF signaling. In vivo, knockdown of PKM2 decelerated tumor growth rate and induced structure deterioration in tumor tissues. The current study for the first time showed that the activity of PKM2 was indispensable for the development and metastasis of OS, thereby providing the basic information for the future development of PKM2-based anti-OS therapies.
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Affiliation(s)
- Quan Yuan
- Department of Orthopedic Surgery, Shengjing Hospital of China Medical University, Shenyang 110004, People's Republic of China
| | - Honghao Yu
- Department of Orthopedic Surgery, Shengjing Hospital of China Medical University, Shenyang 110004, People's Republic of China
| | - Jianhua Chen
- Department of Orthopedic Surgery, Shengjing Hospital of China Medical University, Shenyang 110004, People's Republic of China
| | - Xiaoyu Song
- Institute of Translational Medicine, China Medical University, Shenyang 110122, People's Republic of China
| | - Li Sun
- Department of Nephrology, The First Affiliated Hospital of China Medical University, Shenyang 110001, People's Republic of China.
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9
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Horton SM, Luna Lopez C, Blevins E, Howarth H, Weisberg J, Shestopalov VI, Makarenkova HP, Shah SB. Pannexin 1 Modulates Axonal Growth in Mouse Peripheral Nerves. Front Cell Neurosci 2017; 11:365. [PMID: 29213230 PMCID: PMC5702652 DOI: 10.3389/fncel.2017.00365] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Accepted: 11/06/2017] [Indexed: 01/29/2023] Open
Abstract
The pannexin family of channels consists of three members—pannexin-1 (Panx1), pannexin-2 (Panx2), and pannexin-3 (Panx3) that enable the exchange of metabolites and signaling molecules between intracellular and extracellular compartments. Pannexin-mediated release of intracellular ATP into the extracellular space has been tied to a number of cellular activities, primarily through the activity of type P2 purinergic receptors. Previous work indicates that the opening of Panx1 channels and activation of purinergic receptors by extracellular ATP may cause inflammation and apoptosis. In the CNS (central nervous system) and PNS (peripheral nervous system), coupled pannexin, and P2 functions have been linked to peripheral sensitization (pain) pathways. Purinergic pathways are also essential for other critical processes in the PNS, including myelination and neurite outgrowth. However, whether such pathways are pannexin-dependent remains to be determined. In this study, we use a Panx1 knockout mouse model and pharmacological inhibitors of the Panx1 and the ATP-mediated signaling pathway to fill gaps in our understanding of Panx1 localization in peripheral nerves, roles for Panx1 in axonal outgrowth and myelination, and neurite extension. Our data show that Panx1 is localized to axonal, myelin, and vascular compartments of the peripheral nerves. Knockout of Panx1 gene significantly increased axonal caliber in vivo and axonal growth rate in cultured dorsal root ganglia (DRG) neurons. Furthermore, genetic knockout of Panx1 or inhibition of components of purinergic signaling, by treatment with probenecid and apyrase, resulted in denser axonal outgrowth from cultured DRG explants compared to untreated wild-types. Our findings suggest that Panx1 regulates axonal growth in the peripheral nervous system.
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Affiliation(s)
- Steven M Horton
- Department of Orthopaedic Surgery, University of California, San Diego, La Jolla, CA, United States
| | - Carlos Luna Lopez
- Department of Orthopaedic Surgery, University of California, San Diego, La Jolla, CA, United States
| | - Elisabeth Blevins
- Department of Orthopaedic Surgery, University of California, San Diego, La Jolla, CA, United States.,Research Service, Veterans Affairs San Diego Healthcare System, San Diego, La Jolla, CA, United States
| | - Holly Howarth
- Department of Bioengineering, University of California, San Diego, La Jolla, CA, United States
| | - Jake Weisberg
- Department of Orthopaedic Surgery, University of California, San Diego, La Jolla, CA, United States
| | | | - Helen P Makarenkova
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, United States
| | - Sameer B Shah
- Department of Orthopaedic Surgery, University of California, San Diego, La Jolla, CA, United States.,Research Service, Veterans Affairs San Diego Healthcare System, San Diego, La Jolla, CA, United States.,Department of Bioengineering, University of California, San Diego, La Jolla, CA, United States
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