1
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Su LP, Ji M, Liu L, Sang W, Xue J, Wang B, Pu HW, Zhang W. The expression of ASAP3 and NOTCH3 and the clinicopathological characteristics of adult glioma patients. Open Med (Wars) 2022; 17:1724-1741. [DOI: 10.1515/med-2022-0585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 09/28/2022] [Accepted: 09/28/2022] [Indexed: 11/07/2022] Open
Abstract
Abstract
ASAP3 is involved in a variety of biological activities, including cancer progression in humans. In adult glioma, we explore the effects of ASAP3 and NOTCH3 and their relationships on prognosis. The Oncomine, TIMER, and Gene Expression Profiling Interactive Analysis databases were used to investigate ASAP3 expression. Immunohistochemistry was used to assess the levels of ASAP3 and NOTCH3 expressions. The effects of ASAP3 and NOTCH3 on prognosis were assessed using survival analysis. The results revealed that the amount of ASAP3 mRNA in gliomas was much higher than in normal tissue (P < 0.01). Glioma patients with high ASAP3 mRNA expression had a worse overall survival and progression-free survival. ASAP3 overexpression is directly associated with the NOTCH signaling system. Immunohistochemistry revealed that ASAP3 and NOTCH3 were overexpressed in glioblastomas (GBMs). ASAP3 expression was associated with age, recurrence, tumor resection, postoperative chemoradiotherapy, World Health Organization (WHO) grade, and Ki-67 expression. ASAP3 expression was related to the isocitrate dehydrogenase-1 mutation in low-grade glioma. Gender, local recurrence, tumor resection, postoperative radio-chemotherapy, WHO grade, recurrence, and ATRX expression were all associated with NOTCH3 expression. ASAP3 was shown to be positively associated with NOTCH3 (r = 0.337, P = 0.000). Therefore, ASAP3 and NOTCH3 as oncogene factors have the potential to be prognostic biomarkers and therapeutic targets in adult glioma.
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Affiliation(s)
- Li-ping Su
- Department of Pathology, The First Affiliated Hospital, Xinjiang Medical University , Urumqi , Xinjiang 830011 , P.R. China
- Xinjiang Medical University , Urumqi , Xinjiang 830011 , P.R. China
- Department of Pathology, The First Affiliated Hospital, Xinjiang Medical University, State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia , Urumqi , Xinjiang 830011 , P.R. China
| | - Min Ji
- College of Basic Medicine, Xinjiang Medical University , Urumqi , Xinjiang 830011 , P.R. China
| | - Li Liu
- Department of Pathology, The First Affiliated Hospital, Xinjiang Medical University , Urumqi , Xinjiang 830011 , P.R. China
| | - Wei Sang
- Department of Pathology, The First Affiliated Hospital, Xinjiang Medical University , Urumqi , Xinjiang 830011 , P.R. China
| | - Jing Xue
- Department of Pathology, The First Affiliated Hospital, Xinjiang Medical University , Urumqi , Xinjiang 830011 , P.R. China
| | - Bo Wang
- Department of Pathology, The First Affiliated Hospital, Xinjiang Medical University , Urumqi , Xinjiang 830011 , P.R. China
| | - Hong-Wei Pu
- Department of Science and Research Education Center, The First Affiliated Hospital, Xinjiang Medical University , No. 137 Liyushan Southern Road , Urumqi, Xinjiang 830011 , P.R. China
| | - Wei Zhang
- Department of Pathology, The First Affiliated Hospital, Xinjiang Medical University , No. 137 Liyushan Southern Road , Urumqi , Xinjiang 830011 , P.R. China
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2
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Lysine acetylation regulates the interaction between proteins and membranes. Nat Commun 2021; 12:6466. [PMID: 34753925 PMCID: PMC8578602 DOI: 10.1038/s41467-021-26657-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 09/30/2021] [Indexed: 11/23/2022] Open
Abstract
Lysine acetylation regulates the function of soluble proteins in vivo, yet it remains largely unexplored whether lysine acetylation regulates membrane protein function. Here, we use bioinformatics, biophysical analysis of recombinant proteins, live-cell fluorescent imaging and genetic manipulation of Drosophila to explore lysine acetylation in peripheral membrane proteins. Analysis of 50 peripheral membrane proteins harboring BAR, PX, C2, or EHD membrane-binding domains reveals that lysine acetylation predominates in membrane-interaction regions. Acetylation and acetylation-mimicking mutations in three test proteins, amphiphysin, EHD2, and synaptotagmin1, strongly reduce membrane binding affinity, attenuate membrane remodeling in vitro and alter subcellular localization. This effect is likely due to the loss of positive charge, which weakens interactions with negatively charged membranes. In Drosophila, acetylation-mimicking mutations of amphiphysin cause severe disruption of T-tubule organization and yield a flightless phenotype. Our data provide mechanistic insights into how lysine acetylation regulates membrane protein function, potentially impacting a plethora of membrane-related processes. Lysine acetylation regulates the function of soluble proteins in vivo, yet it remains largely unexplored whether lysine acetylation regulates the function of membrane proteins. Here, the authors map lysine acetylation predominantly in membrane-interaction regions in peripheral membrane proteins and show with three candidate proteins how lysine acetylation is a regulator of membrane protein function.
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3
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Li X, Liu X, Song X, Li Y, Li M, Wang H. Measurement of dynamic membrane mechanosensation using optical tweezers. J Mol Cell Biol 2021; 13:455-457. [PMID: 33779757 PMCID: PMC8436701 DOI: 10.1093/jmcb/mjab021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Affiliation(s)
- Xuanling Li
- Department of Optics and Optical Engineering, University of Science and Technology of China and Hefei National Laboratory for Physical Sciences at the Microscale, Hefei, China
| | - Xing Liu
- MOE Key Laboratory for Membraneless Organelles & Cellular Dynamics, Anhui Key Laboratory for Cellular Dynamics and Chemical Biology, Hefei, China
| | - Xiaoyu Song
- MOE Key Laboratory for Membraneless Organelles & Cellular Dynamics, Anhui Key Laboratory for Cellular Dynamics and Chemical Biology, Hefei, China
| | - Yinmei Li
- Department of Optics and Optical Engineering, University of Science and Technology of China and Hefei National Laboratory for Physical Sciences at the Microscale, Hefei, China.,MOE Key Laboratory for Membraneless Organelles & Cellular Dynamics, Anhui Key Laboratory for Cellular Dynamics and Chemical Biology, Hefei, China
| | - Ming Li
- Department of Laboratory Diagnostics, the First Affiliated Hospital, University of Science and Technology of China, Hefei, China
| | - Haowei Wang
- Department of Optics and Optical Engineering, University of Science and Technology of China and Hefei National Laboratory for Physical Sciences at the Microscale, Hefei, China.,MOE Key Laboratory for Membraneless Organelles & Cellular Dynamics, Anhui Key Laboratory for Cellular Dynamics and Chemical Biology, Hefei, China
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4
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Echarri A, Pavón DM, Sánchez S, García-García M, Calvo E, Huerta-López C, Velázquez-Carreras D, Viaris de Lesegno C, Ariotti N, Lázaro-Carrillo A, Strippoli R, De Sancho D, Alegre-Cebollada J, Lamaze C, Parton RG, Del Pozo MA. An Abl-FBP17 mechanosensing system couples local plasma membrane curvature and stress fiber remodeling during mechanoadaptation. Nat Commun 2019; 10:5828. [PMID: 31862885 PMCID: PMC6925243 DOI: 10.1038/s41467-019-13782-2] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Accepted: 11/22/2019] [Indexed: 12/19/2022] Open
Abstract
Cells remodel their structure in response to mechanical strain. However, how mechanical forces are translated into biochemical signals that coordinate the structural changes observed at the plasma membrane (PM) and the underlying cytoskeleton during mechanoadaptation is unclear. Here, we show that PM mechanoadaptation is controlled by a tension-sensing pathway composed of c-Abl tyrosine kinase and membrane curvature regulator FBP17. FBP17 is recruited to caveolae to induce the formation of caveolar rosettes. FBP17 deficient cells have reduced rosette density, lack PM tension buffering capacity under osmotic shock, and cannot adapt to mechanical strain. Mechanistically, tension is transduced to the FBP17 F-BAR domain by direct phosphorylation mediated by c-Abl, a mechanosensitive molecule. This modification inhibits FBP17 membrane bending activity and releases FBP17-controlled inhibition of mDia1-dependent stress fibers, favoring membrane adaptation to increased tension. This mechanoprotective mechanism adapts the cell to changes in mechanical tension by coupling PM and actin cytoskeleton remodeling. Mechanical forces are sensed by cells and can alter plasma membrane properties, but biochemical changes underlying this are not clear. Here the authors show tension is sensed by c-Abl and FBP17, which couples changes in mechanical tension to remodelling of the plasma membrane and actin cytoskeleton.
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Affiliation(s)
- Asier Echarri
- Mechanoadaptation and Caveolae Biology Laboratory, Cell and Developmental Biology Area, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Melchor Fernández Almagro, 3, 28029, Madrid, Spain.
| | - Dácil M Pavón
- Mechanoadaptation and Caveolae Biology Laboratory, Cell and Developmental Biology Area, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Melchor Fernández Almagro, 3, 28029, Madrid, Spain
| | - Sara Sánchez
- Mechanoadaptation and Caveolae Biology Laboratory, Cell and Developmental Biology Area, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Melchor Fernández Almagro, 3, 28029, Madrid, Spain
| | - María García-García
- Mechanoadaptation and Caveolae Biology Laboratory, Cell and Developmental Biology Area, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Melchor Fernández Almagro, 3, 28029, Madrid, Spain
| | - Enrique Calvo
- Proteomics Unit, Vascular Pathophysiology Area, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Melchor Fernández Almagro, 3, 28029, Madrid, Spain
| | - Carla Huerta-López
- Molecular Mechanics of the Cardiovascular System Laboratory, Cell and Developmental Biology Area, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Melchor Fernández Almagro, 3, 28029, Madrid, Spain
| | - Diana Velázquez-Carreras
- Molecular Mechanics of the Cardiovascular System Laboratory, Cell and Developmental Biology Area, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Melchor Fernández Almagro, 3, 28029, Madrid, Spain
| | - Christine Viaris de Lesegno
- Membrane Mechanics and Dynamics of Intracellular Signaling Laboratory, Institut Curie - Centre de Recherche, PSL Research University, CNRS UMR3666, INSERM U1143, 75248, Paris, France
| | - Nicholas Ariotti
- The Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Ana Lázaro-Carrillo
- Mechanoadaptation and Caveolae Biology Laboratory, Cell and Developmental Biology Area, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Melchor Fernández Almagro, 3, 28029, Madrid, Spain.,Departamento de Biología, Universidad Autónoma de Madrid, Cantoblanco, 28049, Madrid, Spain
| | | | - David De Sancho
- Departamento de Ciencia y Tecnología de Polímeros, Euskal Herriko Unibertsitatea, 20018, Donostia-San Sebastián, Spain.,Donostia International Physics Center, Manuel Lardizabal Ibilbidea, 4, 20018, Donostia-San Sebastián, Spain
| | - Jorge Alegre-Cebollada
- Molecular Mechanics of the Cardiovascular System Laboratory, Cell and Developmental Biology Area, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Melchor Fernández Almagro, 3, 28029, Madrid, Spain
| | - Christophe Lamaze
- Membrane Mechanics and Dynamics of Intracellular Signaling Laboratory, Institut Curie - Centre de Recherche, PSL Research University, CNRS UMR3666, INSERM U1143, 75248, Paris, France
| | - Robert G Parton
- The Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, 4072, Australia.,The Centre for Microscopy and Microanalysis, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Miguel A Del Pozo
- Mechanoadaptation and Caveolae Biology Laboratory, Cell and Developmental Biology Area, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Melchor Fernández Almagro, 3, 28029, Madrid, Spain.
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5
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Song X, Xu W, Xu G, Kong S, Ding L, Xiao J, Cao X, Wang F. ACAP4 interacts with CrkII to promote the recycling of integrin β1. Biochem Biophys Res Commun 2019; 516:8-14. [PMID: 31182282 DOI: 10.1016/j.bbrc.2019.05.173] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Accepted: 05/29/2019] [Indexed: 12/20/2022]
Abstract
ACAP4, a GTPase-activating protein (GAP) for the ADP-ribosylation factor 6 (ARF6), plays import roles in cell migration, cell polarity, vesicle trafficking and tumorigenesis. Similarly, the ubiquitously expressed adaptor protein CrkII functions in a wide range of cellular activities, including cell proliferation, T cell adhesion and activation, tumorigenesis, and bacterial pathogenesis. Here, we demonstrate that ACAP4 physically interacts with CrkII. Biochemical experiments revealed that ACAP4550-660 and the SH3N domain of CrkII are responsible for the interaction. Functional characterization showed that the interaction is required for the recruitment of ACAP4 to the plasma membrane where ACAP4 functions to regulate the recycling of the signal transducer integrin β1. Thus, we suggest that the CrkII-ACAP4 complex may be involved in regulation of cell adhesion.
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Affiliation(s)
- Xueyan Song
- School of Life Sciences, Anhui Medical University, Hefei, 230032, China
| | - Wenjuan Xu
- School of Life Sciences, Anhui Medical University, Hefei, 230032, China
| | - Guangsheng Xu
- School of Life Sciences, Anhui Medical University, Hefei, 230032, China
| | - Shuai Kong
- School of Life Sciences, Anhui Medical University, Hefei, 230032, China
| | - Lu Ding
- School of Life Sciences, Anhui Medical University, Hefei, 230032, China
| | - Jin Xiao
- Department of Neurosurgery, First Affiliated Hospital of Anhui Medical University, Hefei, 230032, China
| | - Xinwang Cao
- School of Life Sciences, Anhui Medical University, Hefei, 230032, China
| | - Fengsong Wang
- School of Life Sciences, Anhui Medical University, Hefei, 230032, China.
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6
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Yuan Y, Zhao X, Wang P, Mei F, Zhou J, Jin Y, McNutt MA, Yin Y. PTENα regulates endocytosis and modulates olfactory function. FASEB J 2019; 33:11148-11162. [PMID: 31291551 DOI: 10.1096/fj.201900588rr] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Phosphatase and tensin homolog deleted on chromosome 10 (PTEN) α is the first identified isoform of the well-known tumor suppressor PTEN. PTENα has an evolutionarily conserved 173-aa N terminus compared with canonical PTEN. Recently, PTENα has been shown to play roles in multiple biologic processes including learning and memory, cardiac homeostasis, and antiviral immunity. Here, we report that PTENα maintains mitral cells in olfactory bulb (OB), regulates endocytosis in OB neurons, and controls olfactory behaviors in mice. We show that PTENα directly dephosphorylates the endocytic protein amphiphysin and promotes its binding to adaptor-related protein complex 2 subunit β1 (Ap2b1). In addition, we identified mutations in the N terminus of PTENα in patients with Parkinson disease and Lewy-body dementia, which are neurodegenerative disorders with early olfactory loss. Overexpression of PTENα mutant H169N in mice OB reduces odor sensitivity. Our data demonstrate a role of PTENα in olfactory function and provide insight into the mechanism of olfactory dysfunction in neurologic disorders.-Yuan, Y., Zhao, X., Wang, P., Mei, F., Zhou, J., Jin, Y., McNutt, M. A., Yin, Y. PTENα regulates endocytosis and modulates olfactory function.
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Affiliation(s)
- Yuyao Yuan
- Institute of Systems Biomedicine, Peking University Health Science Center, Beijing, China.,Department of Pathology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - Xuyang Zhao
- Department of Pathology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - Pan Wang
- Institute of Systems Biomedicine, Peking University Health Science Center, Beijing, China.,Department of Pathology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - Fan Mei
- Institute of Systems Biomedicine, Peking University Health Science Center, Beijing, China.,Department of Pathology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - Juntuo Zhou
- Institute of Systems Biomedicine, Peking University Health Science Center, Beijing, China
| | - Yan Jin
- Institute of Systems Biomedicine, Peking University Health Science Center, Beijing, China
| | - Michael A McNutt
- Institute of Systems Biomedicine, Peking University Health Science Center, Beijing, China
| | - Yuxin Yin
- Institute of Systems Biomedicine, Peking University Health Science Center, Beijing, China.,Department of Pathology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China.,Peking-Tsinghua Center for Life Sciences, Peking University Health Science Center, Beijing, China
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7
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Song X, Liu W, Yuan X, Jiang J, Wang W, Mullen M, Zhao X, Zhang Y, Liu F, Du S, Rehman A, Tian R, Li J, Frost A, Song Z, Green HN, Henry C, Liu X, Ding X, Wang D, Yao X. Acetylation of ACAP4 regulates CCL18-elicited breast cancer cell migration and invasion. J Mol Cell Biol 2018; 10:559-572. [PMID: 30395269 PMCID: PMC6692856 DOI: 10.1093/jmcb/mjy058] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 08/03/2018] [Accepted: 08/20/2018] [Indexed: 01/03/2023] Open
Abstract
Tumor metastasis represents the main causes of cancer-related death. Our recent study showed that chemokine CCL18 secreted from tumor-associated macrophages regulates breast tumor metastasis, but the underlying mechanisms remain less clear. Here, we show that ARF6 GTPase-activating protein ACAP4 regulates CCL18-elicited breast cancer cell migration via the acetyltransferase PCAF-mediated acetylation. CCL18 stimulation elicited breast cancer cell migration and invasion via PCAF-dependent acetylation. ACAP4 physically interacts with PCAF and is a cognate substrate of PCAF during CCL18 stimulation. The acetylation site of ACAP4 by PCAF was mapped to Lys311 by mass spectrometric analyses. Importantly, dynamic acetylation of ACAP4 is essential for CCL18-induced breast cancer cell migration and invasion, as overexpression of the persistent acetylation-mimicking or non-acetylatable ACAP4 mutant blocked CCL18-elicited cell migration and invasion. Mechanistically, the acetylation of ACAP4 at Lys311 reduced the lipid-binding activity of ACAP4 to ensure a robust and dynamic cycling of ARF6-ACAP4 complex with plasma membrane in response to CCL18 stimulation. Thus, these results present a previously undefined mechanism by which CCL18-elicited acetylation of the PH domain controls dynamic interaction between ACAP4 and plasma membrane during breast cancer cell migration and invasion.
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Affiliation(s)
- Xiaoyu Song
- Anhui Key Laboratory for Cellular Dynamics & Chemical Biology, Hefei National Science Center for Physical Sciences at Nanoscale, CAS Center of Excellence in Molecular Cell Sciences, University of Science & Technology of China, Hefei, China
- Keck Center for Cellular Dynamics & Department of Physiology, Morehouse School of Medicine, Atlanta, GA, USA
| | - Wei Liu
- Anhui Key Laboratory for Cellular Dynamics & Chemical Biology, Hefei National Science Center for Physical Sciences at Nanoscale, CAS Center of Excellence in Molecular Cell Sciences, University of Science & Technology of China, Hefei, China
- Keck Center for Cellular Dynamics & Department of Physiology, Morehouse School of Medicine, Atlanta, GA, USA
| | - Xiao Yuan
- Anhui Key Laboratory for Cellular Dynamics & Chemical Biology, Hefei National Science Center for Physical Sciences at Nanoscale, CAS Center of Excellence in Molecular Cell Sciences, University of Science & Technology of China, Hefei, China
- Department of Chemistry, Southern University of Science & Technology, Shenzhen, China
| | - Jiying Jiang
- Anhui Key Laboratory for Cellular Dynamics & Chemical Biology, Hefei National Science Center for Physical Sciences at Nanoscale, CAS Center of Excellence in Molecular Cell Sciences, University of Science & Technology of China, Hefei, China
- Keck Center for Cellular Dynamics & Department of Physiology, Morehouse School of Medicine, Atlanta, GA, USA
| | - Wanjuan Wang
- School of Basic Medical Sciences, Beijing University of Chinese Medicine, Beijing, China
| | - McKay Mullen
- Keck Center for Cellular Dynamics & Department of Physiology, Morehouse School of Medicine, Atlanta, GA, USA
| | - Xuannv Zhao
- Anhui Key Laboratory for Cellular Dynamics & Chemical Biology, Hefei National Science Center for Physical Sciences at Nanoscale, CAS Center of Excellence in Molecular Cell Sciences, University of Science & Technology of China, Hefei, China
| | - Yin Zhang
- Anhui Key Laboratory for Cellular Dynamics & Chemical Biology, Hefei National Science Center for Physical Sciences at Nanoscale, CAS Center of Excellence in Molecular Cell Sciences, University of Science & Technology of China, Hefei, China
- School of Basic Medical Sciences, Beijing University of Chinese Medicine, Beijing, China
| | - Fusheng Liu
- Anhui Key Laboratory for Cellular Dynamics & Chemical Biology, Hefei National Science Center for Physical Sciences at Nanoscale, CAS Center of Excellence in Molecular Cell Sciences, University of Science & Technology of China, Hefei, China
- School of Basic Medical Sciences, Beijing University of Chinese Medicine, Beijing, China
| | - Shihao Du
- Anhui Key Laboratory for Cellular Dynamics & Chemical Biology, Hefei National Science Center for Physical Sciences at Nanoscale, CAS Center of Excellence in Molecular Cell Sciences, University of Science & Technology of China, Hefei, China
- School of Basic Medical Sciences, Beijing University of Chinese Medicine, Beijing, China
| | - Adeel Rehman
- Anhui Key Laboratory for Cellular Dynamics & Chemical Biology, Hefei National Science Center for Physical Sciences at Nanoscale, CAS Center of Excellence in Molecular Cell Sciences, University of Science & Technology of China, Hefei, China
| | - Ruijun Tian
- Department of Chemistry, Southern University of Science & Technology, Shenzhen, China
| | - Jian Li
- Keck Center for Cellular Dynamics & Department of Physiology, Morehouse School of Medicine, Atlanta, GA, USA
| | - Andra Frost
- Department of Pathology, University of Alabama School of Medicine, Birmingham, AL, USA
| | - Zhenwei Song
- Anhui Key Laboratory for Cellular Dynamics & Chemical Biology, Hefei National Science Center for Physical Sciences at Nanoscale, CAS Center of Excellence in Molecular Cell Sciences, University of Science & Technology of China, Hefei, China
| | - Hadiyah-Nicole Green
- Keck Center for Cellular Dynamics & Department of Physiology, Morehouse School of Medicine, Atlanta, GA, USA
| | - Calmour Henry
- Keck Center for Cellular Dynamics & Department of Physiology, Morehouse School of Medicine, Atlanta, GA, USA
| | - Xing Liu
- Anhui Key Laboratory for Cellular Dynamics & Chemical Biology, Hefei National Science Center for Physical Sciences at Nanoscale, CAS Center of Excellence in Molecular Cell Sciences, University of Science & Technology of China, Hefei, China
- Keck Center for Cellular Dynamics & Department of Physiology, Morehouse School of Medicine, Atlanta, GA, USA
| | - Xia Ding
- School of Basic Medical Sciences, Beijing University of Chinese Medicine, Beijing, China
- Keck Center for Cellular Dynamics & Department of Physiology, Morehouse School of Medicine, Atlanta, GA, USA
| | - Dongmei Wang
- Anhui Key Laboratory for Cellular Dynamics & Chemical Biology, Hefei National Science Center for Physical Sciences at Nanoscale, CAS Center of Excellence in Molecular Cell Sciences, University of Science & Technology of China, Hefei, China
| | - Xuebiao Yao
- Anhui Key Laboratory for Cellular Dynamics & Chemical Biology, Hefei National Science Center for Physical Sciences at Nanoscale, CAS Center of Excellence in Molecular Cell Sciences, University of Science & Technology of China, Hefei, China
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8
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Mao X, Fan C, Yu X, Chen B, Jin F. DDEFL1 correlated with Rho GTPases activity in breast cancer. Oncotarget 2017; 8:112487-112497. [PMID: 29348842 PMCID: PMC5762527 DOI: 10.18632/oncotarget.22095] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Accepted: 09/22/2017] [Indexed: 01/13/2023] Open
Abstract
DDEFL1 is related to maintaining a limiting amount of ARF6 in GTP-loaded form by accelerating its GTP hydrolysis activity, which has been implicated in hepatocellular cancer pathogenesis and lung cancer development. We investigated DDEFL1 expression in breast cancer and paired normal breast tissues by immunohistochemistry and found that DDEFL1 expression was significantly associated with tumor size, lymph node metastasis, high content of elastosis and TNM stage but not with menopausal status or age. We detected the mRNA and protein expression of DDEFL1 in breast cancer cell lines by Western blotting and quantitative real-time PCR (qRT-PCR). DDEFL1 was obvious in MDA-MB-435s and MDA-MB-231 but very weak in ZR-75-1. Further experiments were conducted to evaluate the effect of DDEFL1 small interfering RNA (siRNA) transfection on the biological behavior of MDA-MB-231. After transfection, the effects of DDEFL1 inhibition on expression of mRNA and protein were also analyzed by Western blotting and qRT-PCR. Increased apoptosis and invasive ability, decreased cellular proliferation was found in MDA-MB-231 with successful DDEFL1 siRNA transient transfection (p < 0.05). Western blotting and qRT-PCR results showed that the DDEFL1 inhibition up-regulated Caspase-3, Apaf-1, cytochrome c, and Bax expression and down-regulated Bcl-2 expression. The DDEFL1 inhibition also down-regulated the mRNA and protein expression of Rho, CDC42 and Rac1. Our study provided a functional linkage through DDEFL1 with breast cancer biological behaviours by Rho GTPases. Possible implication of our main finding for the DDEFL1 role in breast cancer and the downstream signaling pathways for the treatment of breast cancer.
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Affiliation(s)
- Xiaoyun Mao
- Department of Breast Surgery, First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, China
| | - Chuifeng Fan
- Department of Pathology, First Affiliated Hospital and College of Basic Medical Sciences of China Medical University, Shenyang, Liaoning 110001, China
| | - Xinmiao Yu
- Department of Breast Surgery, First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, China
| | - Bo Chen
- Department of Breast Surgery, First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, China
| | - Feng Jin
- Department of Breast Surgery, First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, China
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9
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ASAP3 regulates microvilli structure in parietal cells and presents intervention target for gastric acidity. Signal Transduct Target Ther 2017; 2:17003. [PMID: 29263912 PMCID: PMC5661632 DOI: 10.1038/sigtrans.2017.3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Revised: 01/20/2017] [Accepted: 01/22/2017] [Indexed: 01/28/2023] Open
Abstract
Gastric acidity-associated disorders such as peptic ulcer and reflux diseases are widespread, and the reported resistance and side effects of currently used medicines suggest an urgent requirement for alternative therapeutic approaches. Here we demonstrate a critical role of ASAP3 in regulating the microvilli structure of parietal cells in vivo, and reveal the feasibility of controlling gastric acidity by targeting ASAP3. Conditional knockout of ASAP3 in mice caused elongation and stacking of microvilli in parietal cells, and substantially decreased gastric acid secretion. These were associated with active assembly of F-actin caused by a higher level of GTP-bound Arf6 GTPase. Consistently, a small molecular compound QS11 inhibited ASAP3 function and significantly reduced gastric acidity in vivo. Of note, the expression of ASAP3 was positively correlated with gastric acid secretion in 90 human cases, and high expression of ASAP3 was associated with reflux disease and peptic ulcer. These results reveal for the first time that ASAP3 regulates the microvilli structures in parietal cells. Our data also suggest ASAP3 as a feasible and drugable therapeutic target for gastric acidity-associated diseases.
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10
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Yuan X, Yao PY, Jiang J, Zhang Y, Su Z, Yao W, Wang X, Gui P, Mullen M, Henry C, Ward T, Wang W, Brako L, Tian R, Zhao X, Wang F, Cao X, Wang D, Liu X, Ding X, Yao X. MST4 kinase phosphorylates ACAP4 protein to orchestrate apical membrane remodeling during gastric acid secretion. J Biol Chem 2017; 292:16174-16187. [PMID: 28808054 DOI: 10.1074/jbc.m117.808212] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Indexed: 12/18/2022] Open
Abstract
Digestion in the stomach depends on acidification of the lumen. Histamine-elicited acid secretion is triggered by activation of the PKA cascade, which ultimately results in the insertion of gastric H,K-ATPases into the apical plasma membranes of parietal cells. Our recent study revealed the functional role of PKA-MST4-ezrin signaling axis in histamine-elicited acid secretion. However, it remains uncharacterized how the PKA-MST4-ezrin signaling axis operates the insertion of H,K-ATPases into the apical plasma membranes of gastric parietal cells. Here we show that MST4 phosphorylates ACAP4, an ARF6 GTPase-activating protein, at Thr545 Histamine stimulation activates MST4 and promotes MST4 interaction with ACAP4. ACAP4 physically interacts with MST4 and is a cognate substrate of MST4 during parietal cell activation. The phosphorylation site of ACAP4 by MST4 was mapped to Thr545 by mass spectrometric analyses. Importantly, phosphorylation of Thr545 is essential for acid secretion in parietal cells because either suppression of ACAP4 or overexpression of non-phosphorylatable ACAP4 prevents the apical membrane reorganization and proton pump translocation elicited by histamine stimulation. In addition, persistent overexpression of MST4 phosphorylation-deficient ACAP4 results in inhibition of gastric acid secretion and blockage of tubulovesicle fusion to the apical membranes. Significantly, phosphorylation of Thr545 enables ACAP4 to interact with ezrin. Given the location of Thr545 between the GTPase-activating protein domain and the first ankyrin repeat, we reason that MST4 phosphorylation elicits a conformational change that enables ezrin-ACAP4 interaction. Taken together, these results define a novel molecular mechanism linking the PKA-MST4-ACAP4 signaling cascade to polarized acid secretion in gastric parietal cells.
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Affiliation(s)
- Xiao Yuan
- From the BUCM-USTC Collaborative Center for Parietal Cell Research, CAS Center for Excellence in Molecular Cell Science, University of Science and Technology of China, Hefei 230027, China
| | - Phil Y Yao
- the Beijing University of Chinese Medicine, Beijing 100029, China.,the Keck Center for Cellular Dynamics, Morehouse School of Medicine, Atlanta, Georgia 30310
| | - Jiying Jiang
- From the BUCM-USTC Collaborative Center for Parietal Cell Research, CAS Center for Excellence in Molecular Cell Science, University of Science and Technology of China, Hefei 230027, China
| | - Yin Zhang
- From the BUCM-USTC Collaborative Center for Parietal Cell Research, CAS Center for Excellence in Molecular Cell Science, University of Science and Technology of China, Hefei 230027, China.,the Beijing University of Chinese Medicine, Beijing 100029, China
| | - Zeqi Su
- From the BUCM-USTC Collaborative Center for Parietal Cell Research, CAS Center for Excellence in Molecular Cell Science, University of Science and Technology of China, Hefei 230027, China.,the Beijing University of Chinese Medicine, Beijing 100029, China
| | - Wendy Yao
- the Keck Center for Cellular Dynamics, Morehouse School of Medicine, Atlanta, Georgia 30310
| | - Xueying Wang
- From the BUCM-USTC Collaborative Center for Parietal Cell Research, CAS Center for Excellence in Molecular Cell Science, University of Science and Technology of China, Hefei 230027, China
| | - Ping Gui
- From the BUCM-USTC Collaborative Center for Parietal Cell Research, CAS Center for Excellence in Molecular Cell Science, University of Science and Technology of China, Hefei 230027, China
| | - McKay Mullen
- the Keck Center for Cellular Dynamics, Morehouse School of Medicine, Atlanta, Georgia 30310
| | - Calmour Henry
- the Keck Center for Cellular Dynamics, Morehouse School of Medicine, Atlanta, Georgia 30310
| | - Tarsha Ward
- From the BUCM-USTC Collaborative Center for Parietal Cell Research, CAS Center for Excellence in Molecular Cell Science, University of Science and Technology of China, Hefei 230027, China.,the Keck Center for Cellular Dynamics, Morehouse School of Medicine, Atlanta, Georgia 30310
| | - Wenwen Wang
- From the BUCM-USTC Collaborative Center for Parietal Cell Research, CAS Center for Excellence in Molecular Cell Science, University of Science and Technology of China, Hefei 230027, China.,the Keck Center for Cellular Dynamics, Morehouse School of Medicine, Atlanta, Georgia 30310
| | - Larry Brako
- the Keck Center for Cellular Dynamics, Morehouse School of Medicine, Atlanta, Georgia 30310
| | - Ruijun Tian
- From the BUCM-USTC Collaborative Center for Parietal Cell Research, CAS Center for Excellence in Molecular Cell Science, University of Science and Technology of China, Hefei 230027, China.,the Southern University of Science and Technology, Shenzhen 518055, China
| | - Xuannv Zhao
- the Beijing University of Chinese Medicine, Beijing 100029, China
| | - Fengsong Wang
- From the BUCM-USTC Collaborative Center for Parietal Cell Research, CAS Center for Excellence in Molecular Cell Science, University of Science and Technology of China, Hefei 230027, China.,the Keck Center for Cellular Dynamics, Morehouse School of Medicine, Atlanta, Georgia 30310.,the Department of Biochemistry, Anhui Medical University, Hefei 230027, China, and
| | - Xinwang Cao
- the Keck Center for Cellular Dynamics, Morehouse School of Medicine, Atlanta, Georgia 30310.,the Department of Biochemistry, Anhui Medical University, Hefei 230027, China, and
| | - Dongmei Wang
- From the BUCM-USTC Collaborative Center for Parietal Cell Research, CAS Center for Excellence in Molecular Cell Science, University of Science and Technology of China, Hefei 230027, China
| | - Xing Liu
- From the BUCM-USTC Collaborative Center for Parietal Cell Research, CAS Center for Excellence in Molecular Cell Science, University of Science and Technology of China, Hefei 230027, China, .,the Keck Center for Cellular Dynamics, Morehouse School of Medicine, Atlanta, Georgia 30310
| | - Xia Ding
- the Beijing University of Chinese Medicine, Beijing 100029, China,
| | - Xuebiao Yao
- From the BUCM-USTC Collaborative Center for Parietal Cell Research, CAS Center for Excellence in Molecular Cell Science, University of Science and Technology of China, Hefei 230027, China, .,the Keck Center for Cellular Dynamics, Morehouse School of Medicine, Atlanta, Georgia 30310
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11
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Tian H, Qian J, Ai L, Li Y, Su W, Kong XM, Xu J, Fang JY. Upregulation of ASAP3 contributes to colorectal carcinogenesis and indicates poor survival outcome. Cancer Sci 2017; 108:1544-1555. [PMID: 28502111 PMCID: PMC5543456 DOI: 10.1111/cas.13281] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Revised: 03/31/2017] [Accepted: 05/10/2017] [Indexed: 01/10/2023] Open
Abstract
The function and clinical implication of ArfGAP with SH3 domain, ankyrin repeat, and PH domain 3 (ASAP3) in colorectal cancer (CRC) remains undefined. In the present study, we showed that the expression level of ASAP3 was dramatically increased in CRC and its upregulation was associated with American Joint Committee on Cancer stage (P < 0.001) and poor prognosis (P = 0.0022). The combination of stage and ASAP3 expression improved the prediction of survival in CRC patients. Suppression of ASAP3 inhibited cell proliferation by inducing G1 phase arrest without influencing apoptosis. ASAP3 promoted growth of colon tumors in mice with colitis, and accelerated cell invasion and migration in vitro. Increased ASAP3 was associated with activation of the nuclear factor‐κB (NF‐κB) canonical pathway in CRC. Upregulation of ASAP3 increased the phosphorylation and nuclear translocation of the p65 NF‐κB subunit. Mechanistically, ASAP3 interacts with NF‐κB essential modulator (NEMO) and could reduce the polyubiquitinylation of NEMO. Overall, ASAP3 might regulate NF‐κB via binding to NEMO. ASAP3 acts as an oncogene in colonic cancer and could be a potential biomarker of colon carcinogenesis.
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Affiliation(s)
- Haiying Tian
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Institute of Digestive Disease, Shanghai Jiao Tong University, Shanghai, China.,Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jin Qian
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Institute of Digestive Disease, Shanghai Jiao Tong University, Shanghai, China
| | - Luoyan Ai
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Institute of Digestive Disease, Shanghai Jiao Tong University, Shanghai, China
| | - Yueyuan Li
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Institute of Digestive Disease, Shanghai Jiao Tong University, Shanghai, China
| | - Wenyu Su
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Institute of Digestive Disease, Shanghai Jiao Tong University, Shanghai, China
| | - Xian-Ming Kong
- Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jie Xu
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Institute of Digestive Disease, Shanghai Jiao Tong University, Shanghai, China
| | - Jing-Yuan Fang
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Institute of Digestive Disease, Shanghai Jiao Tong University, Shanghai, China
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12
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13
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Suetsugu S. Higher-order assemblies of BAR domain proteins for shaping membranes. Microscopy (Oxf) 2016; 65:201-10. [DOI: 10.1093/jmicro/dfw002] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2015] [Accepted: 01/09/2016] [Indexed: 02/07/2023] Open
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14
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Ma XL, Cui WN, Zhao Q, Zhao J, Hou XN, Li DY, Chen ZL, Shen YZ, Huang ZJ. Functional study of a salt-inducible TaSR gene in Triticum aestivum. PHYSIOLOGIA PLANTARUM 2016; 156:40-53. [PMID: 25855206 DOI: 10.1111/ppl.12337] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Revised: 02/16/2015] [Accepted: 02/20/2015] [Indexed: 06/04/2023]
Abstract
The gene expression chip of a salt-tolerant wheat mutant under salt stress was used to clone a salt-induced gene with unknown functions. This gene was designated as TaSR (Triticum aestivum salt-response gene) and submitted to GenBank under accession number EF580107. Quantitative polymerase chain reaction (PCR) analysis showed that gene expression was induced by salt stress. Arabidopsis and rice (Oryza sativa) plants expressing TaSR presented higher salt tolerance than the controls, whereas AtSR mutant and RNA interference rice plants were more sensitive to salt. Under salt stress, TaSR reduced Na(+) concentration and improved cellular K(+) and Ca(2+) concentrations; this gene was also localized on the cell membrane. β-Glucuronidase (GUS) staining and GUS fluorescence quantitative determination were conducted through fragmentation cloning of the TaSR promoter. Salt stress-responsive elements were detected at 588-1074 bp upstream of the start codon. GUS quantitative tests of the full-length promoter in different tissues indicated that promoter activity was highest in the leaf under salt stress. Bimolecular fluorescence complementation and yeast two-hybrid screening further showed the correlation of TaSR with TaPRK and TaKPP. In vitro phosphorylation of TaSR and TaPRK2697 showed that TaPRK2697 did not phosphorylate TaSR. This study revealed that the novel TaSR may be used to improve plant tolerance to salt stress.
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Affiliation(s)
- Xiao-Li Ma
- College of Life Science, Hebei Normal University, Shijiazhuang, People's Republic of China
| | - Wei-Na Cui
- College of Life Science, Hebei Normal University, Shijiazhuang, People's Republic of China
| | - Qian Zhao
- College of Life Science, Hebei Normal University, Shijiazhuang, People's Republic of China
| | - Jing Zhao
- College of Life Science, Hebei Normal University, Shijiazhuang, People's Republic of China
| | - Xiao-Na Hou
- College of Life Science, Hebei Normal University, Shijiazhuang, People's Republic of China
- School of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong, People's Republic of China
| | - Dong-Yan Li
- College of Life Science, Hebei Normal University, Shijiazhuang, People's Republic of China
| | - Zhao-Liang Chen
- College of Life Science, Hebei Normal University, Shijiazhuang, People's Republic of China
| | - Yin-Zhu Shen
- College of Life Science, Hebei Normal University, Shijiazhuang, People's Republic of China
| | - Zhan-Jing Huang
- College of Life Science, Hebei Normal University, Shijiazhuang, People's Republic of China
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15
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Liu D, Liu X, Zhou T, Yao W, Zhao J, Zheng Z, Jiang W, Wang F, Aikhionbare FO, Hill DL, Emmett N, Guo Z, Wang D, Yao X, Chen Y. IRE1-RACK1 axis orchestrates ER stress preconditioning-elicited cytoprotection from ischemia/reperfusion injury in liver. J Mol Cell Biol 2015; 8:144-56. [PMID: 26711306 DOI: 10.1093/jmcb/mjv066] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2015] [Accepted: 09/22/2015] [Indexed: 12/14/2022] Open
Abstract
Endoplasmic reticulum (ER) stress is involved in ischemic preconditioning that protects various organs from ischemia/reperfusion (I/R) injury. We established an in vivo ER stress preconditioning model in which tunicamycin was injected into rats before hepatic I/R. The hepatic I/R injury, demonstrated by serum aminotransferase level and the ultra-structure of the liver, was alleviated by administration of tunicamycin, which induced ER stress in rat liver by activating inositol-requiring enzyme 1 (IRE1) and upregulating 78 kDa glucose-regulated protein (GRP78). The proteomic identification for IRE1 binders revealed interaction and cooperation among receptor for activated C kinase 1 (RACK1), phosphorylated AMPK, and IRE1 under ER stress conditions in a spatiotemporal manner. Furthermore, in vitro ER stress preconditioning was induced by thapsigargin and tunicamycin in L02 and HepG2 cells. Surprisingly, BCL2 was found to be phosphorylated by IRE1 under ER stress conditions to prevent apoptotic process by activation of autophagy. In conclusion, ER stress preconditioning protects against hepatic I/R injury, which is orchestrated by IRE1-RACK1 axis through the activation of BCL2. Our findings provide novel insights into the molecular pathways underlying ER stress preconditioning-elicited cytoprotective effect against hepatic I/R injury.
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Affiliation(s)
- Dong Liu
- Department of Hepatobiliary Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China Present address: Department of Hepatobiliary Surgery, Navy General Hospital, Beijing 100048, China
| | - Xing Liu
- Anhui Key Laboratory of Cellular Dynamics and Hefei National Laboratory for Physical Sciences at Nanoscale, Hefei 230027, China
| | - Ti Zhou
- Department of Hepatobiliary Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - William Yao
- Atlanta Clinical & Translational Science Institute, Atlanta, GA 30310, USA
| | - Jun Zhao
- Department of Pathology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Zhigang Zheng
- Department of Hepatobiliary Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Wei Jiang
- Department of Hepatobiliary Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Fengsong Wang
- Anhui Key Laboratory of Cellular Dynamics and Hefei National Laboratory for Physical Sciences at Nanoscale, Hefei 230027, China Atlanta Clinical & Translational Science Institute, Atlanta, GA 30310, USA Department of Biochemistry, Anhui Medical University, Hefei 230027, China
| | | | - Donald L Hill
- Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Nerimah Emmett
- Atlanta Clinical & Translational Science Institute, Atlanta, GA 30310, USA
| | - Zhen Guo
- Anhui Key Laboratory of Cellular Dynamics and Hefei National Laboratory for Physical Sciences at Nanoscale, Hefei 230027, China
| | - Dongmei Wang
- Anhui Key Laboratory of Cellular Dynamics and Hefei National Laboratory for Physical Sciences at Nanoscale, Hefei 230027, China
| | - Xuebiao Yao
- Atlanta Clinical & Translational Science Institute, Atlanta, GA 30310, USA
| | - Yong Chen
- Department of Hepatobiliary Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
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16
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Wang D, Guo Z, Zhou J, Chen J, Zhao G, Chen R, He M, Liu Z, Wang H, Chen Q. Novel Mn3 [Co(CN)6]2@SiO2@Ag Core-Shell Nanocube: Enhanced Two-Photon Fluorescence and Magnetic Resonance Dual-Modal Imaging-Guided Photothermal and Chemo-therapy. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:5956-5967. [PMID: 26437078 DOI: 10.1002/smll.201502102] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 08/22/2015] [Indexed: 06/05/2023]
Abstract
The versatile Mn3[Co(CN)6]2@SiO2@Ag core-shell NCs are prepared by a simple coprecipitation method. Ag nanoparticles with an average diameter of 12 nm deposited on the surface of Mn3[Co(CN)6]2@SiO2 through S-Ag bonding are fabricated in ethanol solution by reducing silver nitrate (AgNO3 ) with NaBH4 . The NCs possess T1 -T2 dual-modal magnetic resonance imaging ability. The inner Prussian blue analogs (PBAs) Mn3[Co(CN)6]2 exhibit bright two-photon fluorescence (TPF) imaging when excited at 730 nm. Moreover, the TPF imaging intensity displays 1.85-fold enhancement after loading of Ag nanoparticles. Besides, the sample also has multicolor fluorescence imaging ability under 403, 488, and 543 nm single photon excitation. The as-synthesized Mn3[Co(CN)6]2@SiO2@Ag NCs show a DOX loading capacity of 600 mg g(-1) and exhibit an excellent ability of near-infrared (NIR)-responsive drug release and photothermal therapy (PTT) which is induced from the relative high absorbance in NIR region. The combined chemotherapy and PTT against cancer cells in vitro test shows high therapeutic efficiency. The multimodal treatment and imaging could lead to this material a potential multifunctional system for biomedical diagnosis and therapy.
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Affiliation(s)
- Dongdong Wang
- Hefei National Laboratory for Physical Sciences at Microscale and Department of Materials Science & Engineering, CAS High Magnetic Field Laboratory, University of Science and Technology of China, 96 Jinzhai Road, Hefei, 230026, P. R. China
| | - Zhen Guo
- Anhui Key Laboratory for Cellular Dynamics and Chemical Biology and School of Life Sciences, University of Science and Technology of China, 96 Jinzhai Road, Hefei, 230026, P. R. China
| | - Jiajia Zhou
- Anhui Key Laboratory for Cellular Dynamics and Chemical Biology and School of Life Sciences, University of Science and Technology of China, 96 Jinzhai Road, Hefei, 230026, P. R. China
| | - Jian Chen
- Hefei National Laboratory for Physical Sciences at Microscale and Department of Materials Science & Engineering, CAS High Magnetic Field Laboratory, University of Science and Technology of China, 96 Jinzhai Road, Hefei, 230026, P. R. China
| | - Gaozheng Zhao
- Hefei National Laboratory for Physical Sciences at Microscale and Department of Materials Science & Engineering, CAS High Magnetic Field Laboratory, University of Science and Technology of China, 96 Jinzhai Road, Hefei, 230026, P. R. China
| | - Ruhui Chen
- Hefei National Laboratory for Physical Sciences at Microscale and Department of Materials Science & Engineering, CAS High Magnetic Field Laboratory, University of Science and Technology of China, 96 Jinzhai Road, Hefei, 230026, P. R. China
| | - Mengni He
- Hefei National Laboratory for Physical Sciences at Microscale and Department of Materials Science & Engineering, CAS High Magnetic Field Laboratory, University of Science and Technology of China, 96 Jinzhai Road, Hefei, 230026, P. R. China
| | - Zhenbang Liu
- Anhui Key Laboratory for Cellular Dynamics and Chemical Biology and School of Life Sciences, University of Science and Technology of China, 96 Jinzhai Road, Hefei, 230026, P. R. China
| | - Haibao Wang
- Radiology Department of the First Affiliated Hospital of Anhui Medical University, 218 Jixi Road, Hefei, 230022, P. R. China
| | - Qianwang Chen
- Hefei National Laboratory for Physical Sciences at Microscale and Department of Materials Science & Engineering, CAS High Magnetic Field Laboratory, University of Science and Technology of China, 96 Jinzhai Road, Hefei, 230026, P. R. China
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17
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Suetsugu S, Kurisu S, Takenawa T. Dynamic shaping of cellular membranes by phospholipids and membrane-deforming proteins. Physiol Rev 2014; 94:1219-48. [PMID: 25287863 DOI: 10.1152/physrev.00040.2013] [Citation(s) in RCA: 150] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
All cellular compartments are separated from the external environment by a membrane, which consists of a lipid bilayer. Subcellular structures, including clathrin-coated pits, caveolae, filopodia, lamellipodia, podosomes, and other intracellular membrane systems, are molded into their specific submicron-scale shapes through various mechanisms. Cells construct their micro-structures on plasma membrane and execute vital functions for life, such as cell migration, cell division, endocytosis, exocytosis, and cytoskeletal regulation. The plasma membrane, rich in anionic phospholipids, utilizes the electrostatic nature of the lipids, specifically the phosphoinositides, to form interactions with cytosolic proteins. These cytosolic proteins have three modes of interaction: 1) electrostatic interaction through unstructured polycationic regions, 2) through structured phosphoinositide-specific binding domains, and 3) through structured domains that bind the membrane without specificity for particular phospholipid. Among the structured domains, there are several that have membrane-deforming activity, which is essential for the formation of concave or convex membrane curvature. These domains include the amphipathic helix, which deforms the membrane by hemi-insertion of the helix with both hydrophobic and electrostatic interactions, and/or the BAR domain superfamily, known to use their positively charged, curved structural surface to deform membranes. Below the membrane, actin filaments support the micro-structures through interactions with several BAR proteins as well as other scaffold proteins, resulting in outward and inward membrane micro-structure formation. Here, we describe the characteristics of phospholipids, and the mechanisms utilized by phosphoinositides to regulate cellular events. We then summarize the precise mechanisms underlying the construction of membrane micro-structures and their involvements in physiological and pathological processes.
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Affiliation(s)
- Shiro Suetsugu
- Graduate School of Biological Sciences, Nara Institute of Science and Technology, Ikoma, Nara, Japan; Biosignal Research Center, Kobe University, Kobe, Hyogo, Japan; and Graduate School of Medicine, Kobe University, Kobe, Hyogo, Japan
| | - Shusaku Kurisu
- Graduate School of Biological Sciences, Nara Institute of Science and Technology, Ikoma, Nara, Japan; Biosignal Research Center, Kobe University, Kobe, Hyogo, Japan; and Graduate School of Medicine, Kobe University, Kobe, Hyogo, Japan
| | - Tadaomi Takenawa
- Graduate School of Biological Sciences, Nara Institute of Science and Technology, Ikoma, Nara, Japan; Biosignal Research Center, Kobe University, Kobe, Hyogo, Japan; and Graduate School of Medicine, Kobe University, Kobe, Hyogo, Japan
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18
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Caldwell JL, Smith CER, Taylor RF, Kitmitto A, Eisner DA, Dibb KM, Trafford AW. Dependence of cardiac transverse tubules on the BAR domain protein amphiphysin II (BIN-1). Circ Res 2014; 115:986-96. [PMID: 25332206 DOI: 10.1161/circresaha.116.303448] [Citation(s) in RCA: 96] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
RATIONALE Transverse tubules (t-tubules) regulate cardiac excitation-contraction coupling and exhibit interchamber and interspecies differences in expression. In cardiac disease, t-tubule loss occurs and affects the systolic calcium transient. However, the mechanisms controlling t-tubule maintenance and whether these factors differ between species, cardiac chambers, and in a disease setting remain unclear. OBJECTIVE To determine the role of the Bin/Amphiphysin/Rvs domain protein amphiphysin II (AmpII) in regulating t-tubule maintenance and the systolic calcium transient. METHODS AND RESULTS T-tubule density was assessed by di-4-ANEPPS, FM4-64 or WGA staining using confocal microscopy. In rat, ferret, and sheep hearts t-tubule density and AmpII protein levels were lower in the atrium than in the ventricle. Heart failure (HF) was induced in sheep using right ventricular tachypacing and ferrets by ascending aortic coarctation. In both HF models, AmpII protein and t-tubule density were decreased in the ventricles. In the sheep, atrial t-tubules were also lost in HF and AmpII levels decreased. Conversely, junctophilin 2 levels did not show interchamber differences in the rat and ferret nor did they change in HF in the sheep or ferret. In addition, in rat atrial and sheep HF atrial cells where t-tubules were absent, junctophilin 2 had sarcomeric intracellular distribution. Small interfering RNA-induced knockdown of AmpII protein reduced t-tubule density, calcium transient amplitude, and the synchrony of the systolic calcium transient. CONCLUSIONS AmpII is intricately involved in t-tubule maintenance. Reducing AmpII protein decreases t-tubule density, reduces the amplitude, and increases the heterogeneity of the systolic calcium transient.
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Affiliation(s)
- Jessica L Caldwell
- From the Unit of Cardiac Physiology and Cardiac Biophysics Group, Institute of Cardiovascular Sciences, Manchester Academic Health Science Centre, University of Manchester, Manchester, United Kingdom
| | - Charlotte E R Smith
- From the Unit of Cardiac Physiology and Cardiac Biophysics Group, Institute of Cardiovascular Sciences, Manchester Academic Health Science Centre, University of Manchester, Manchester, United Kingdom
| | - Rebecca F Taylor
- From the Unit of Cardiac Physiology and Cardiac Biophysics Group, Institute of Cardiovascular Sciences, Manchester Academic Health Science Centre, University of Manchester, Manchester, United Kingdom
| | - Ashraf Kitmitto
- From the Unit of Cardiac Physiology and Cardiac Biophysics Group, Institute of Cardiovascular Sciences, Manchester Academic Health Science Centre, University of Manchester, Manchester, United Kingdom
| | - David A Eisner
- From the Unit of Cardiac Physiology and Cardiac Biophysics Group, Institute of Cardiovascular Sciences, Manchester Academic Health Science Centre, University of Manchester, Manchester, United Kingdom
| | - Katharine M Dibb
- From the Unit of Cardiac Physiology and Cardiac Biophysics Group, Institute of Cardiovascular Sciences, Manchester Academic Health Science Centre, University of Manchester, Manchester, United Kingdom
| | - Andrew W Trafford
- From the Unit of Cardiac Physiology and Cardiac Biophysics Group, Institute of Cardiovascular Sciences, Manchester Academic Health Science Centre, University of Manchester, Manchester, United Kingdom.
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