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Erol ÖD, Şenocak Ş, Aerts-Kaya F. The Role of Rab GTPases in the development of genetic and malignant diseases. Mol Cell Biochem 2024; 479:255-281. [PMID: 37060515 DOI: 10.1007/s11010-023-04727-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Accepted: 04/01/2023] [Indexed: 04/16/2023]
Abstract
Small GTPases have been shown to play an important role in several cellular functions, including cytoskeletal remodeling, cell polarity, intracellular trafficking, cell-cycle, progression and lipid transformation. The Ras-associated binding (Rab) family of GTPases constitutes the largest family of GTPases and consists of almost 70 known members of small GTPases in humans, which are known to play an important role in the regulation of intracellular membrane trafficking, membrane identity, vesicle budding, uncoating, motility and fusion of membranes. Mutations in Rab genes can cause a wide range of inherited genetic diseases, ranging from neurodegenerative diseases, such as Parkinson's disease (PD) and Alzheimer's disease (AD) to immune dysregulation/deficiency syndromes, like Griscelli Syndrome Type II (GS-II) and hemophagocytic lymphohistiocytosis (HLH), as well as a variety of cancers. Here, we provide an extended overview of human Rabs, discussing their function and diseases related to Rabs and Rab effectors, as well as focusing on effects of (aberrant) Rab expression. We aim to underline their importance in health and the development of genetic and malignant diseases by assessing their role in cellular structure, regulation, function and biology and discuss the possible use of stem cell gene therapy, as well as targeting of Rabs in order to treat malignancies, but also to monitor recurrence of cancer and metastasis through the use of Rabs as biomarkers. Future research should shed further light on the roles of Rabs in the development of multifactorial diseases, such as diabetes and assess Rabs as a possible treatment target.
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Affiliation(s)
- Özgür Doğuş Erol
- Department of Stem Cell Sciences, Hacettepe University Graduate School of Health Sciences, 06100, Ankara, Turkey
- Hacettepe University Center for Stem Cell Research and Development, 06100, Ankara, Turkey
| | - Şimal Şenocak
- Department of Stem Cell Sciences, Hacettepe University Graduate School of Health Sciences, 06100, Ankara, Turkey
- Hacettepe University Center for Stem Cell Research and Development, 06100, Ankara, Turkey
| | - Fatima Aerts-Kaya
- Department of Stem Cell Sciences, Hacettepe University Graduate School of Health Sciences, 06100, Ankara, Turkey.
- Hacettepe University Center for Stem Cell Research and Development, 06100, Ankara, Turkey.
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2
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Taskaeva I, Shatruk A, Bgatova N, Yeremina A, Trunov A, Kononova N, Chernykh V. Autophagy and vesicular trafficking in human uveal melanoma: A histopathological study. Microsc Res Tech 2024; 87:122-132. [PMID: 37698482 DOI: 10.1002/jemt.24417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 08/04/2023] [Accepted: 09/03/2023] [Indexed: 09/13/2023]
Abstract
Uveal melanoma is an ocular tumor with a high risk of developing metastases. The endo-lysosomal system can affect the melanoma progression by accelerating and facilitating invasion or metastasis. This study aims to conduct comparative analysis of normal choroidal melanocytes and uveal melanoma cells ultrastructure with a focus on intracellular transport system, and to examine the patterns of autophagy- and vesicular trafficking-related proteins expression in a case series of uveal melanomas. Transmission electron microscopy was used to assess the ultrastructure of normal choroidal melanocytes and uveal melanoma cells. The expression levels of autophagy- and vesicular trafficking-related proteins in three histological types of uveal melanoma were analyzed by immunofluorescence staining. Electron microscopy results showed that the autophagic vacuoles were more abundant in normal choroidal melanocytes, than in uveal melanoma cells. The normal choroidal melanocytes were characterized by active intracellular vesicular trafficking; however, the proportion of caveolae was higher in uveal melanoma cells. The spindle type of tumor was characterized by a high expression levels of LC3 beta, while Rab7 and Rab11 proteins expression was significantly up-regulated in the mixed-type tumor cells. The results indicate that uveal melanoma cells probably have lower basal levels of autophagy and higher receptor-mediated endocytic trafficking-associated with caveolae than normal choroidal melanocytes. RESEARCH HIGHLIGHTS: The autophagic vacuoles are abundant in normal choroidal melanocytes. Uveal melanoma cells are characterized by a high proportion of caveolae. The high expression levels of LC3 beta were revealed in a spindle type of tumor, while Rab7 and Rab11 proteins expression was up-regulated in the mixed-type tumor cells.
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Affiliation(s)
- Iuliia Taskaeva
- Laboratory of Ultrastructural Research, Research Institute of Clinical and Experimental Lymphology - Branch of the Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - Anastasia Shatruk
- Laboratory of Ultrastructural Research, Research Institute of Clinical and Experimental Lymphology - Branch of the Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - Nataliya Bgatova
- Laboratory of Ultrastructural Research, Research Institute of Clinical and Experimental Lymphology - Branch of the Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - Alena Yeremina
- S. N. Fyodorov Federal State Institution National Medical Research Center Intersectoral Research and Technology Complex "Eye Microsurgery" Ministry of Health of the Russian Federation, Novosibirsk, Russia
| | - Aleksander Trunov
- S. N. Fyodorov Federal State Institution National Medical Research Center Intersectoral Research and Technology Complex "Eye Microsurgery" Ministry of Health of the Russian Federation, Novosibirsk, Russia
| | - Natalya Kononova
- S. N. Fyodorov Federal State Institution National Medical Research Center Intersectoral Research and Technology Complex "Eye Microsurgery" Ministry of Health of the Russian Federation, Novosibirsk, Russia
| | - Valeriy Chernykh
- S. N. Fyodorov Federal State Institution National Medical Research Center Intersectoral Research and Technology Complex "Eye Microsurgery" Ministry of Health of the Russian Federation, Novosibirsk, Russia
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3
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Liu X, Hu Y, Li C, Chen J, Liu X, Shen Y, Xu Y, Chen W, Xu X. Overexpression of YEATS2 Remodels the Extracellular Matrix to Promote Hepatocellular Carcinoma Progression via the PI3K/AKT Pathway. Cancers (Basel) 2023; 15:cancers15061850. [PMID: 36980736 PMCID: PMC10046954 DOI: 10.3390/cancers15061850] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 03/12/2023] [Indexed: 03/30/2023] Open
Abstract
Hepatocellular carcinoma (HCC) is one of the most common cancers and the fourth leading cause of death in men. YEATS domain containing 2 (YEATS2) gene encodes a scaffolding subunit of the ATAC complex. We found that YEATS2 was upregulated in HCC tissues and was associated with a poor prognosis. However, the role of YEATS2 in HCC remains unclear. The purpose of this study was to investigate the effect of YEATS2 on the progression of HCC and to elucidate its related mechanisms. We found that overexpression of YEATS2 promoted tumor cell proliferation, migration, and invasion through the PI3K/AKT signaling pathway and regulation of extracellular matrix. These findings help to understand the role of YEATS2 in HCC, and YEATS2 may become a new target for HCC therapy.
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Affiliation(s)
- Xin Liu
- Department of Oncology, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Yi Hu
- Department of Oncology, General Hospital of Central Theater Command, Wuhan 430061, China
| | - Cairong Li
- School of Clinical Medicine, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100, China
| | - Jiayu Chen
- Department of Oncology, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Xiaohong Liu
- Department of Oncology, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Yang Shen
- Department of Oncology, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Yangtao Xu
- Department of Oncology, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Wenliang Chen
- Department of Oncology, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Ximing Xu
- Department of Oncology, Renmin Hospital of Wuhan University, Wuhan 430060, China
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Nandy N, Roy JK. Rab11 negatively regulates wingless preventing JNK-mediated apoptosis in Drosophila epithelium during embryonic dorsal closure. Cell Tissue Res 2023; 391:485-504. [PMID: 36705747 DOI: 10.1007/s00441-023-03740-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 01/12/2023] [Indexed: 01/28/2023]
Abstract
Rab11, a small Ras like GTPase marking the recycling endosomes, plays instrumental roles in Drosophila embryonic epithelial morphogenesis where an array of reports testify its importance in the maintenance of cyto-architectural as well as functional attributes of the concerned cells. Proper Rab11 functions ensure a precise regulation of developmentally active cell signaling pathways which in turn promote the expression of morphogens and other physico-chemical cues which finally forge an embryo out of a single layer of cells. Earlier reports have established that Rab11 functions are vital for fly embryonic development where amorphic mutants such as EP3017 homozygotes show a fair degree of epithelial defects along with incomplete dorsal closure. Here, we present a detailed account of the effects of Rab11 loss of function in the dorso-lateral epithelium which resulted in severe dorsal closure defects along with an elevated JNK-Dpp expression. We further observed that the dorso-lateral epithelial cells undergo epithelial to mesenchymal transition as well as apoptosis in Rab11 mutants with elevated expression levels of MMP1 and Caspase-3, where Caspase-3 contributes to the Rab11 knockout phenotype contrary to the knockdown mutants or hypomorphs. Interestingly, the elevated expressions of the core JNK-Dpp signaling could be rescued with a simultaneous knockdown of wingless in the Rab11 knockout mutants suggesting a genetic interaction of Rab11 with the Wingless pathway during dorsal closure, an ideal model of epithelial wound healing.
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Affiliation(s)
- Nabarun Nandy
- Cytogenetics Laboratory, Department of Zoology, Banaras Hindu University, Varanasi, 221005, India
| | - Jagat Kumar Roy
- Cytogenetics Laboratory, Department of Zoology, Banaras Hindu University, Varanasi, 221005, India.
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Sultana P, Novotny J. Rab11 and Its Role in Neurodegenerative Diseases. ASN Neuro 2022; 14:17590914221142360. [PMID: 36464817 PMCID: PMC9726856 DOI: 10.1177/17590914221142360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/08/2022] Open
Abstract
Vesicles mediate the trafficking of membranes/proteins in the endocytic and secretory pathways. These pathways are regulated by small GTPases of the Rab family. Rab proteins belong to the Ras superfamily of GTPases, which are significantly involved in various intracellular trafficking and signaling processes in the nervous system. Rab11 is known to play a key role especially in recycling many proteins, including receptors important for signal transduction and preservation of functional activities of nerve cells. Rab11 activity is controlled by GEFs (guanine exchange factors) and GAPs (GTPase activating proteins), which regulate its function through modulating GTP/GDP exchange and the intrinsic GTPase activity, respectively. Rab11 is involved in the transport of several growth factor molecules important for the development and repair of neurons. Overexpression of Rab11 has been shown to significantly enhance vesicle trafficking. On the other hand, a reduced expression of Rab11 was observed in several neurodegenerative diseases. Current evidence appears to support the notion that Rab11 and its cognate proteins may be potential targets for therapeutic intervention. In this review, we briefly discuss the function of Rab11 and its related interaction partners in intracellular pathways that may be involved in neurodegenerative processes.
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Affiliation(s)
| | - Jiri Novotny
- Jiri Novotny, Department of Physiology, Faculty of Science, Charles University, Prague, Czech Republic.
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Raue R, Frank AC, Fuhrmann DC, de la Cruz-Ojeda P, Rösser S, Bauer R, Cardamone G, Weigert A, Syed SN, Schmid T, Brüne B. MicroRNA-200c Attenuates the Tumor-Infiltrating Capacity of Macrophages. BIOLOGY 2022; 11:biology11030349. [PMID: 35336722 PMCID: PMC8945044 DOI: 10.3390/biology11030349] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 02/17/2022] [Accepted: 02/18/2022] [Indexed: 12/12/2022]
Abstract
Simple Summary The tumor microenvironment determines the prognosis and outcome for cancer patients. Herein, tumor-associated macrophages are not only highly abundant, but also play a crucial role in shaping a tumor-supporting microenvironment. Both their recruitment to the tumor as well as their functional polarization toward a pro-tumorigenic phenotype are mediated by tumor-derived factors including microRNAs. However, the impact of most microRNAs on the tumor cell-macrophage crosstalk remains to be elucidated. Thus, we reached out to investigate the role of hsa-miR-200c-3p (miR-200c) in tumor cell–macrophage interactions, as it was shown to be differentially expressed during cancer progression and metastasis. miR-200c was highly expressed in MCF7 breast tumor cells compared to macrophages. Furthermore, we identified a CD36-dependent uptake of miR-200c, derived from apoptotic tumor cells, into macrophages. In macrophages, elevated miR-200c levels reduced the expression of numerous migration-associated mRNAs, consequently reducing the capacity of macrophages to infiltrate into tumor spheroids. Finally, a distinct signature of miR-200c-repressed, predicted targets was identified, which strongly correlated with tumor infiltration. Targeting the miR-200c transfer from dying tumor cells to macrophages might therefore provide the opportunity to specifically modulate tumor-associated macrophage recruitment. Abstract Macrophages constitute a major part of the tumor-infiltrating immune cells. Within the tumor microenvironment, they acquire an alternatively activated, tumor-supporting phenotype. Factors released by tumor cells are crucial for the recruitment of tumor-associated macrophages. In the present project, we aimed to understand the role of hsa-miR-200c-3p (miR-200c) in the interplay between tumor cells and macrophages. To this end, we employed a coculture system of MCF7 breast tumor cells and primary human macrophages and observed the transfer of miR-200c from apoptotic tumor cells to macrophages, which required intact CD36 receptor in macrophages. We further comprehensively determined miR-200c targets in macrophages by mRNA-sequencing and identified numerous migration-associated mRNAs to be downregulated by miR-200c. Consequently, miR-200c attenuated macrophage infiltration into 3-dimensional tumor spheroids. miR-200c-mediated reduction in infiltration further correlated with a miR-200c migration signature comprised of the four miR-200c-repressed, predicted targets PPM1F, RAB11FIB2, RDX, and MSN.
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Affiliation(s)
- Rebecca Raue
- Institute of Biochemistry I, Faculty of Medicine, Goethe-University Frankfurt, 60590 Frankfurt, Germany; (R.R.); (A.-C.F.); (D.C.F.); (S.R.); (R.B.); (G.C.); (A.W.); (S.N.S.); (B.B.)
| | - Ann-Christin Frank
- Institute of Biochemistry I, Faculty of Medicine, Goethe-University Frankfurt, 60590 Frankfurt, Germany; (R.R.); (A.-C.F.); (D.C.F.); (S.R.); (R.B.); (G.C.); (A.W.); (S.N.S.); (B.B.)
| | - Dominik C. Fuhrmann
- Institute of Biochemistry I, Faculty of Medicine, Goethe-University Frankfurt, 60590 Frankfurt, Germany; (R.R.); (A.-C.F.); (D.C.F.); (S.R.); (R.B.); (G.C.); (A.W.); (S.N.S.); (B.B.)
| | - Patricia de la Cruz-Ojeda
- Institute of Biomedicine of Seville (IBiS), Hospital University “Virgen del Rocío”/CSIC/University of Seville, 41013 Seville, Spain;
| | - Silvia Rösser
- Institute of Biochemistry I, Faculty of Medicine, Goethe-University Frankfurt, 60590 Frankfurt, Germany; (R.R.); (A.-C.F.); (D.C.F.); (S.R.); (R.B.); (G.C.); (A.W.); (S.N.S.); (B.B.)
| | - Rebekka Bauer
- Institute of Biochemistry I, Faculty of Medicine, Goethe-University Frankfurt, 60590 Frankfurt, Germany; (R.R.); (A.-C.F.); (D.C.F.); (S.R.); (R.B.); (G.C.); (A.W.); (S.N.S.); (B.B.)
| | - Giulia Cardamone
- Institute of Biochemistry I, Faculty of Medicine, Goethe-University Frankfurt, 60590 Frankfurt, Germany; (R.R.); (A.-C.F.); (D.C.F.); (S.R.); (R.B.); (G.C.); (A.W.); (S.N.S.); (B.B.)
| | - Andreas Weigert
- Institute of Biochemistry I, Faculty of Medicine, Goethe-University Frankfurt, 60590 Frankfurt, Germany; (R.R.); (A.-C.F.); (D.C.F.); (S.R.); (R.B.); (G.C.); (A.W.); (S.N.S.); (B.B.)
- German Cancer Consortium (DKTK), Partner Site Frankfurt, 60590 Frankfurt, Germany
- Frankfurt Cancer Institute, Goethe-University Frankfurt, 60596 Frankfurt, Germany
| | - Shahzad Nawaz Syed
- Institute of Biochemistry I, Faculty of Medicine, Goethe-University Frankfurt, 60590 Frankfurt, Germany; (R.R.); (A.-C.F.); (D.C.F.); (S.R.); (R.B.); (G.C.); (A.W.); (S.N.S.); (B.B.)
| | - Tobias Schmid
- Institute of Biochemistry I, Faculty of Medicine, Goethe-University Frankfurt, 60590 Frankfurt, Germany; (R.R.); (A.-C.F.); (D.C.F.); (S.R.); (R.B.); (G.C.); (A.W.); (S.N.S.); (B.B.)
- Correspondence:
| | - Bernhard Brüne
- Institute of Biochemistry I, Faculty of Medicine, Goethe-University Frankfurt, 60590 Frankfurt, Germany; (R.R.); (A.-C.F.); (D.C.F.); (S.R.); (R.B.); (G.C.); (A.W.); (S.N.S.); (B.B.)
- German Cancer Consortium (DKTK), Partner Site Frankfurt, 60590 Frankfurt, Germany
- Frankfurt Cancer Institute, Goethe-University Frankfurt, 60596 Frankfurt, Germany
- Fraunhofer Institute for Translational Medicine and Pharmacology, 60596 Frankfurt, Germany
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Zhang J, Jiang Z, Shi A. Rab GTPases: The principal players in crafting the regulatory landscape of endosomal trafficking. Comput Struct Biotechnol J 2022; 20:4464-4472. [PMID: 36051867 PMCID: PMC9418685 DOI: 10.1016/j.csbj.2022.08.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Revised: 08/05/2022] [Accepted: 08/07/2022] [Indexed: 11/16/2022] Open
Abstract
After endocytosis, diverse cargos are sorted into endosomes and directed to various destinations, including extracellular macromolecules, membrane lipids, and membrane proteins. Some cargos are returned to the plasma membrane via endocytic recycling. In contrast, others are delivered to the Golgi apparatus through the retrograde pathway, while the rest are transported to late endosomes and eventually to lysosomes for degradation. Rab GTPases are major regulators that ensure cargos are delivered to their proper destinations. Rabs are localized to distinct endosomes and play predominant roles in membrane budding, vesicle formation and motility, vesicle tethering, and vesicle fusion by recruiting effectors. The cascades between Rabs via shared effectors or the recruitment of Rab activators provide an additional layer of spatiotemporal regulation of endocytic trafficking. Notably, several recent studies have indicated that disorders of Rab-mediated endocytic transports are closely associated with diseases such as immunodeficiency, cancer, and neurological disorders.
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Sattar RSA, Sumi MP, Nimisha, Apurva, Kumar A, Sharma AK, Ahmad E, Ali A, Mahajan B, Saluja SS. S1P signaling, its interactions and cross-talks with other partners and therapeutic importance in colorectal cancer. Cell Signal 2021; 86:110080. [PMID: 34245863 DOI: 10.1016/j.cellsig.2021.110080] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 06/25/2021] [Accepted: 07/05/2021] [Indexed: 02/07/2023]
Abstract
Sphingosine-1-Phosphate (S1P) plays an important role in normal physiology, inflammation, initiation and progression of cancer. Deregulation of S1P signaling causes aberrant proliferation, affects survival, leads to angiogenesis and metastasis. Sphingolipid rheostat is crucial for cellular homeostasis. Discrepancy in sphingolipid metabolism is linked to cancer and drug insensitivity. Owing to these diverse functions and being a potent mediator of tumor growth, S1P signaling might be a suitable candidate for anti-tumor therapy or combination therapy. In this review, with a focus on colorectal cancer we have summarized the interacting partners of S1P signaling pathway, its therapeutic approaches along with the contribution of S1P signaling to various cancer hallmarks.
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Affiliation(s)
- Real Sumayya Abdul Sattar
- Central Molecular Laboratory, Govind Ballabh Pant Institute of Postgraduate Medical Education and Research (GIPMER), New Delhi, India
| | - Mamta P Sumi
- Central Molecular Laboratory, Govind Ballabh Pant Institute of Postgraduate Medical Education and Research (GIPMER), New Delhi, India
| | - Nimisha
- Central Molecular Laboratory, Govind Ballabh Pant Institute of Postgraduate Medical Education and Research (GIPMER), New Delhi, India
| | - Apurva
- Central Molecular Laboratory, Govind Ballabh Pant Institute of Postgraduate Medical Education and Research (GIPMER), New Delhi, India
| | - Arun Kumar
- Central Molecular Laboratory, Govind Ballabh Pant Institute of Postgraduate Medical Education and Research (GIPMER), New Delhi, India
| | - Abhay Kumar Sharma
- Central Molecular Laboratory, Govind Ballabh Pant Institute of Postgraduate Medical Education and Research (GIPMER), New Delhi, India
| | - Ejaj Ahmad
- Central Molecular Laboratory, Govind Ballabh Pant Institute of Postgraduate Medical Education and Research (GIPMER), New Delhi, India
| | - Asgar Ali
- Department of Biochemistry, All India Institute of Medical Science (AIIMS), Patna, Bihar, India
| | - Bhawna Mahajan
- Central Molecular Laboratory, Govind Ballabh Pant Institute of Postgraduate Medical Education and Research (GIPMER), New Delhi, India; Department of Biochemistry, Govind Ballabh Pant Institute of Postgraduate Medical Education and Research (GIPMER), New Delhi, India
| | - Sundeep Singh Saluja
- Central Molecular Laboratory, Govind Ballabh Pant Institute of Postgraduate Medical Education and Research (GIPMER), New Delhi, India; Department of GI Surgery, Govind Ballabh Pant Institute of Postgraduate Medical Education and Research (GIPMER), New Delhi, India.
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Revising Endosomal Trafficking under Insulin Receptor Activation. Int J Mol Sci 2021; 22:ijms22136978. [PMID: 34209489 PMCID: PMC8268289 DOI: 10.3390/ijms22136978] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Revised: 06/25/2021] [Accepted: 06/27/2021] [Indexed: 02/06/2023] Open
Abstract
The endocytosis of ligand-bound receptors and their eventual recycling to the plasma membrane (PM) are processes that have an influence on signalling activity and therefore on many cell functions, including migration and proliferation. Like other tyrosine kinase receptors (TKR), the insulin receptor (INSR) has been shown to be endocytosed by clathrin-dependent and -independent mechanisms. Once at the early endosome (EE), the sorting of the receptor, either to the late endosome (LE) for degradation or back to the PM through slow or fast recycling pathways, will determine the intensity and duration of insulin effects. Both the endocytic and the endosomic pathways are regulated by many proteins, the Arf and Rab families of small GTPases being some of the most relevant. Here, we argue for a specific role for the slow recycling route, whilst we review the main molecular mechanisms involved in INSR endocytosis, sorting and recycling, as well as their possible role in cell functions.
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Zhang W, Li X, Zhang W, Lu Y, Lin W, Yang L, Zhang Z, Li X. The LncRNA CASC11 Promotes Colorectal Cancer Cell Proliferation and Migration by Adsorbing miR-646 and miR-381-3p to Upregulate Their Target RAB11FIP2. Front Oncol 2021; 11:657650. [PMID: 33937069 PMCID: PMC8084185 DOI: 10.3389/fonc.2021.657650] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Accepted: 03/25/2021] [Indexed: 12/24/2022] Open
Abstract
Background We previously reported that the long non-coding RNA (lncRNA) CASC11 promotes colorectal cancer (CRC) progression as an oncogene by binding to HNRNPK. However, it remains unknown whether CASC11 can act as a competitive endogenous RNA (ceRNA) in CRC. In this study, we focused on the role of CASC11 as a ceRNA in CRC by regulating miR-646 and miR-381-3p targeting of RAB11FIP2. Methods We identified the target microRNAs (miRNAs) of CASC11 and the target genes of miR-646 and miR-381-3p using bioinformatic methods. A dual-luciferase reporter assay was performed to validate the target relationship. Quantitative real-time PCR (qRT-PCR), western blotting (WB), and immunohistochemistry (IHC) were used to measure the RNA and protein expression levels. Rescue experiments in vitro and in vivo were performed to investigate the influence of the CASC11/miR-646 and miR-381-3p/RAB11FIP2 axis on CRC progression. Results We found that CASC11 binds to miR-646 and miR-381-3p in the cytoplasm of CRC cells. Moreover, miR-646 and miR-381-3p inhibitors reversed the suppressive effect of CASC11 silencing on CRC growth and metastasis in vitro and in vivo. We further confirmed that RAB11FIP2 is a mutual target of miR-646 and miR-381-3p. The expression levels of CASC11 and RAB11FIP2 in CRC were positively correlated and reciprocally regulated. Further study showed that CASC11 played an important role in regulating PI3K/AKT pathway by miR-646 and miR-381-3p/RAB11FIP2 axis. Conclusion Our study showed that CASC11 promotes the progression of CRC as a ceRNA by sponging miR-646 and miR-381-3p. Thus, CASC11 is a potential biomarker and a therapeutic target of CRC.
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Affiliation(s)
- Wei Zhang
- Department of Pathology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China.,Department of Pathology, The First Affiliated Hospital (Yijishan Hospital) of Wannan Medical College, Wuhu, China
| | - Xiaomin Li
- Department of Pathology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Wenjuan Zhang
- Department of Pathology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Yanxia Lu
- Department of Pathology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Weihao Lin
- Department of Pathology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Lawei Yang
- Department of Pathology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Zheying Zhang
- Department of Pathology, Xinxiang Medical University, Xinxiang, China
| | - Xuenong Li
- Department of Pathology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
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11
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McKenna M, Balasuriya N, Zhong S, Li SSC, O'Donoghue P. Phospho-Form Specific Substrates of Protein Kinase B (AKT1). Front Bioeng Biotechnol 2021; 8:619252. [PMID: 33614606 PMCID: PMC7886700 DOI: 10.3389/fbioe.2020.619252] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Accepted: 12/29/2020] [Indexed: 11/17/2022] Open
Abstract
Protein kinase B (AKT1) is hyper-activated in diverse human tumors. AKT1 is activated by phosphorylation at two key regulatory sites, Thr308 and Ser473. Active AKT1 phosphorylates many, perhaps hundreds, of downstream cellular targets in the cytosol and nucleus. AKT1 is well-known for phosphorylating proteins that regulate cell survival and apoptosis, however, the full catalog of AKT1 substrates remains unknown. Using peptide arrays, we recently discovered that each phosphorylated form of AKT1 (pAKT1S473, pAKT1T308, and ppAKT1S473,T308) has a distinct substrate specificity, and these data were used to predict potential new AKT1 substrates. To test the high-confidence predictions, we synthesized target peptides representing putative AKT1 substrates. Peptides substrates were synthesized by solid phase synthesis and their purity was confirmed by mass spectrometry. Most of the predicted peptides showed phosphate accepting activity similar to or greater than that observed with a peptide derived from a well-established AKT1 substrate, glycogen synthase kinase 3β (GSK-3β). Among the novel substrates, AKT1 was most active with peptides representing PIP3-binding protein Rab11 family-interacting protein 2 and cysteinyl leukotriene receptor 1, indicating their potential role in AKT1-dependent cellular signaling. The ppAKT1S473,T308 enzyme was highly selective for peptides containing a patch of basic residues at −5, −4, −3 and aromatic residues (Phe/Tyr) at +1 positions from the phosphorylation site. The pAKT1S473 variant preferred more acidic peptides, Ser or Pro at +4, and was agnostic to the residue at −5. The data further support our hypothesis that Ser473 phosphorylation plays a key role in modulating AKT1 substrate selectivity.
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Affiliation(s)
- McShane McKenna
- Department of Biochemistry, The University of Western Ontario, London, ON, Canada
| | - Nileeka Balasuriya
- Department of Biochemistry, The University of Western Ontario, London, ON, Canada
| | - Shanshan Zhong
- Department of Biochemistry, The University of Western Ontario, London, ON, Canada
| | - Shawn Shun-Cheng Li
- Department of Biochemistry, The University of Western Ontario, London, ON, Canada
| | - Patrick O'Donoghue
- Department of Biochemistry, The University of Western Ontario, London, ON, Canada.,Department of Chemistry, The University of Western Ontario, London, ON, Canada
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12
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Gao S, Yan L, Zhang H, Fan X, Jiao X, Shao F. Identification of a Metastasis-Associated Gene Signature of Clear Cell Renal Cell Carcinoma. Front Genet 2021; 11:603455. [PMID: 33613617 PMCID: PMC7889952 DOI: 10.3389/fgene.2020.603455] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Accepted: 12/29/2020] [Indexed: 12/16/2022] Open
Abstract
Clear cell renal cell carcinoma (ccRCC) is one of the most frequent pathological subtypes of kidney cancer, accounting for ~70-75%, and the major cause of mortality is metastatic disease. The difference in gene expression profiles between primary ccRCC tumors and metastatic tumors has not been determined. Thus, we report integrated genomic and transcriptomic analysis for identifying differentially expressed genes (DEGs) between primary and metastatic ccRCC tumors to understand the molecular mechanisms underlying the development of metastases. The microarray datasets GSE105261 and GSE85258 were obtained from the Gene Expression Omnibus (GEO) database, and the R package limma was used for DEG analyses. In summary, the results described herein provide important molecular evidence that metastatic ccRCC tumors are different from primary tumors. Enrichment analysis indicated that the DEGs were mainly enriched in ECM-receptor interaction, platelet activation, protein digestion, absorption, focal adhesion, and the PI3K-Akt signaling pathway. Moreover, we found that DEGs associated with a higher level of tumor immune infiltrates and tumor mutation burden were more susceptible to poor prognosis of ccRCC. Specifically, our study indicates that seven core genes, namely the collagen family (COL1A2, COL1A1, COL6A3, and COL5A1), DCN, FBLN1, and POSTN, were significantly upregulated in metastatic tumors compared with those in primary tumors and, thus, potentially offer insight into novel therapeutic and early diagnostic biomarkers of ccRCC.
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Affiliation(s)
- Suhua Gao
- He'nan Provincial Key Laboratory of Kidney Disease and Immunology, Department of Nephrology, He'nan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou, China
| | - Lei Yan
- He'nan Provincial Key Laboratory of Kidney Disease and Immunology, Department of Nephrology, He'nan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou, China
| | - Hongtao Zhang
- He'nan Provincial Key Laboratory of Kidney Disease and Immunology, Department of Nephrology, He'nan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou, China
| | - Xiaoguang Fan
- He'nan Provincial Key Laboratory of Kidney Disease and Immunology, Department of Nephrology, He'nan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou, China
| | - Xiaojing Jiao
- He'nan Provincial Key Laboratory of Kidney Disease and Immunology, Department of Nephrology, He'nan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou, China
| | - Fengmin Shao
- He'nan Provincial Key Laboratory of Kidney Disease and Immunology, Department of Nephrology, He'nan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou, China
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13
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EBV-miR-BART10-3p and EBV-miR-BART22 promote metastasis of EBV-associated gastric carcinoma by activating the canonical Wnt signaling pathway. Cell Oncol (Dordr) 2020; 43:901-913. [PMID: 32533512 DOI: 10.1007/s13402-020-00538-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2019] [Revised: 05/20/2020] [Accepted: 05/22/2020] [Indexed: 02/06/2023] Open
Abstract
PURPOSE Epstein-Barr virus (EBV)-associated gastric carcinoma (EBVaGC) constitutes the largest subpopulation in EBV-associated tumors worldwide. To date, 44 mature EBV-encoded microRNAs (EBV miRNAs) have been identified, but their roles in EBVaGC development are still poorly understood. In this study, we aimed to investigate the roles and targets of ebv-miR-BART10-3p (BART10-3p) and ebv-miR-BART22 (BART22) in EBVaGC. METHODS EBV miRNA expression in EBVaGCs was evaluated by deep sequencing and qRT-PCR, and relationships between BART10-3p or BART22 expression and clinicolpathological characteristics and survival rates of patients with EBVaGC were analyzed. The roles of BART10-3p and BART22 and their underlying mechanisms were further investigated through exogenous overexpression or silencing in EBVaGC cells, and validated in clinical EBVaGC tissue samples. RESULTS BART10-3p and BART22 were found to be highly expressed in the EBVaGC cell lines SNU719 and YCCEL1. Higher expression of BART10-3p or BART22 in primary EBVaGC samples was significantly associated with lymph node metastasis and a worse 5-year overall survival. BART10-3p and BART22 promoted cell migration and invasion by targeting adenomatous polyposis coli (APC) and Dickkopf 1 (DKK1), thereby activating the Wnt signaling pathway and, consequently, upregulating downstream Twist and downregulating downstream E-cadherin. In 874 primary gastric carcinoma samples, APC and DKK1 were found to be lower expressed in EBVaGC than in EBV-negative samples, and their expression levels were inversely correlated with those of BART10-3p and BART22 in 71 EBVaGC samples. CONCLUSIONS From our data we conclude that BART10-3p and BART22 play vital roles in promoting EBVaGC metastasis by targeting APC and DKK1 and, subsequently, activating the Wnt signaling pathway, thereby providing novel prognostic biomarkers and potential therapeutic targets for EBVaGC.
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14
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Zhang ZY, Lu M, Liu ZK, Li H, Yong YL, Zhang RY, Chen ZN, Bian H. Rab11a regulates MMP2 expression by activating the PI3K/AKT pathway in human hepatocellular carcinoma cells. Pathol Res Pract 2020; 216:153046. [PMID: 32825931 DOI: 10.1016/j.prp.2020.153046] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 05/17/2020] [Accepted: 05/31/2020] [Indexed: 02/06/2023]
Abstract
As a member of the Rab GTPase family, Rab11a plays an important role in vesicle transport and tumor progression. However, it is not clear whether it can also be used as an oncoprotein in hepatocellular carcinoma (HCC). In this study, database and immunohistochemical analyses showed that Rab11a was highly expressed in HCC tissues, and associated with poor clinical prognosis. Rab11a overexpression promoted the proliferation, migration, invasion, and anti-apoptosis of human HCC cell lines, MHCC-97H and HCC-LM3, whereas the downregulation of Rab11a inhibited these biological tumor activities. Nude mice xenograft demonstrated that Rab11a had a positive effect on the growth of hepatocellular carcinoma cells in vivo. Further studies found that the PI3K/AKT pathway and matrix metalloproteinase 2 (MMP2) upregulation can be activated by over-expression of Rab11a. However, MMP2 upregulation induced by Rab11a can be inhibited by the PI3K/AKT pathway inhibitor, LY294002. Altogether, our study established for the first time that Rab11a can play a pro-cancer role in HCC, as a novel oncoprotein, by activating the PI3K/AKT pathway to regulate MMP2 expression.
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Affiliation(s)
- Zhi-Yun Zhang
- Department of Cell Biology, National Translational Science Center for Molecular Medicine, Fourth Military Medical University, Xi'an, 710032, China
| | - Meng Lu
- Department of Cell Biology, National Translational Science Center for Molecular Medicine, Fourth Military Medical University, Xi'an, 710032, China
| | - Ze-Kun Liu
- Department of Cell Biology, National Translational Science Center for Molecular Medicine, Fourth Military Medical University, Xi'an, 710032, China
| | - Hao Li
- Department of Cell Biology, National Translational Science Center for Molecular Medicine, Fourth Military Medical University, Xi'an, 710032, China
| | - Yu-Le Yong
- Department of Cell Biology, National Translational Science Center for Molecular Medicine, Fourth Military Medical University, Xi'an, 710032, China
| | - Ren-Yu Zhang
- Department of Cell Biology, National Translational Science Center for Molecular Medicine, Fourth Military Medical University, Xi'an, 710032, China
| | - Zhi-Nan Chen
- Department of Cell Biology, National Translational Science Center for Molecular Medicine, Fourth Military Medical University, Xi'an, 710032, China.
| | - Huijie Bian
- Department of Cell Biology, National Translational Science Center for Molecular Medicine, Fourth Military Medical University, Xi'an, 710032, China.
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15
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Fu Q, Yu Z. Phosphoglycerate kinase 1 (PGK1) in cancer: A promising target for diagnosis and therapy. Life Sci 2020; 256:117863. [PMID: 32479953 DOI: 10.1016/j.lfs.2020.117863] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 05/26/2020] [Accepted: 05/27/2020] [Indexed: 12/22/2022]
Abstract
Phosphoglycerate kinase 1 (PGK1) is the first critical enzyme to produce ATP in the glycolytic pathway. PGK1 is not only a metabolic enzyme but also a protein kinase, which mediates the tumor growth, migration and invasion through phosphorylation some important substrates. Moreover, PGK1 is associated with poor treatment and prognosis of cancers. This manuscript reviews the structure, functions, post-translational modifications (PTMs) of PGK1 and its relationship with tumors, which demonstrates that PGK1 has indispensable value in the tumor progression. The current review highlights the important role of PGK1 in anticancer treatments.
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Affiliation(s)
- Qi Fu
- Department of Reproductive Medicine, Affiliated Hospital of Weifang Medical University, Weifang, Shandong Province, PR China.; College of Bioscience and Technology, Weifang Medical University, Weifang, Shandong Province, PR China
| | - Zhenhai Yu
- Department of Reproductive Medicine, Affiliated Hospital of Weifang Medical University, Weifang, Shandong Province, PR China..
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16
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Wang Z, Xu H, Zhang J, Jin H, Wei P. Basic fibroblast growth factor blockade enhances lung cancer cell invasion by activating the AKT/MMP-2/VEGF pathway. Basic Clin Pharmacol Toxicol 2020; 126:43-50. [PMID: 31314153 DOI: 10.1111/bcpt.13290] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Accepted: 07/08/2019] [Indexed: 01/19/2023]
Abstract
Basic fibroblast growth factor (bFGF) can stimulate cancer cell growth and invasion; however, the influence of bFGF blockade remains unclear. Therefore, we aimed to explore the effects of bFGF blockade on the growth and invasion in A549 (high bFGF expression) and H2122 (low bFGF expression) lung cancer cells. We found that the blocking of bFGF by a neutralizing monoclonal antibody suppressed the growth of A549 cells but not of H2122 cells, as well as strongly induced the invasiveness of A549 cancer cells. Furthermore, bFGF blockade activated the AKT pathway and enhanced the expression levels of matrix metalloproteinase (MMP)-2 and vascular endothelial growth factor (VEGF) in A549 cells. These responses could be reversed by treatment with AKT inhibitor and siMMP-2, thus indicating the involvement of the AKT/MMP-2/VEGF-positive feedback loop. Finally, we confirmed that the anti-bFGF-induced invasion of cancer cells could be rescued by inhibiting the AKT/MMP-2/VEGF loop. Our results revealed that bFGF blockade suppresses cell growth but promotes cell invasion in lung cancer cells with high bFGF expression levels. Our data further reinforced the importance of the AKT/MMP-2/VEGF loop in regulating anti-bFGF-induced tumour cell invasion and suggested the limitations of the bFGF-targeting strategy in lung cancer treatment.
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Affiliation(s)
- Zhiyong Wang
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Guangdong Medical University, Dongguan, China.,Department of Immunology, Zhuhai Campus of Zunyi Medical University, Zhuhai, China
| | - Huan Xu
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Guangdong Medical University, Dongguan, China
| | - Junai Zhang
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Guangdong Medical University, Dongguan, China
| | - Hua Jin
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Guangdong Medical University, Dongguan, China
| | - Pei Wei
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Guangdong Medical University, Dongguan, China
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17
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Liu L, Xie D, Xie H, Huang W, Zhang J, Jin W, Jiang W, Xie D. ARHGAP10 Inhibits the Proliferation and Metastasis of CRC Cells via Blocking the Activity of RhoA/AKT Signaling Pathway. Onco Targets Ther 2019; 12:11507-11516. [PMID: 31920339 PMCID: PMC6938210 DOI: 10.2147/ott.s222564] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Accepted: 12/09/2019] [Indexed: 12/21/2022] Open
Abstract
Introduction ARHGAP10 belongs to the ARHGAP family, which is downregulated in certain human tumors. However, the detailed function of ARHGAP10 remains unclear in human colon carcinoma (CRC). In the current study, we aimed to explore the role of ARHGAP10 in the growth and metastasis of CRC cells. Methods ARHGAP10 was induced silencing and overexpression using RNA interference (RNAi) and lentiviral-vector in CRC cells. Quantitative real-time PCR (qRT-PCR) and Western blot were used to quantify the mRNA and protein contents of ARHGAP10. Cell proliferation was determined by using Cell counting kit-8 (CCK-8). Transwell assay was utilized to examine the role of ARHGAP10 in the migration and invasion of CRC cells. Results Our results indicated that ARHGAP10 was downregulated in human CRC tissues and low expression of ARHGAP10 was associated with poor prognosis of patients with CRC. Moreover, ARHGAP10 overexpression significantly inhibited the proliferation and metastasis of CRC cells. Moreover, a PI3K/AKT inhibitor LY294002 was utilized to examine the connection between ARHGAP10 and AKT. Our findings demonstrated that the AKT inhibitor LY294002 could rescue the function of ARHGAP10 in CRC cells. Discussion It was the first time to elucidate that AKT involved in the ARHGAP10 signaling pathway and ARHGAP10 negatively mediated the phosphorylation of AKT (p-AKT) and RhoA activity in CRC cells. Interestingly, the Rho/MRTF/SRF inhibitor CCG-1423 significantly inhibited the phosphorylation of AKT in ARHGAP10 siRNA transfected CRC cells. Much importantly, overexpression of ARHGAP10 deeply suppressed the metastasis of CRC cells in the lung in vivo. Taken together, our findings not only enhanced the understanding of the anti-cancer effect of ARHGAP10 in CRC cells but also indicated its underlying pathway in CRC.
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Affiliation(s)
- Lin Liu
- Department of Pharmacy, Dahua Hospital, Shanghai, People's Republic of China
| | - Dongyu Xie
- Department of Spleen-Stomach, Zhenjiang Affiliated Hospital of Nanjing University of Chinese Medicine, Zhenjiang, People's Republic of China.,Department of Spleen-Stomach, Zhenjiang Hospital of Traditional Chinese Medicine, Zhenjiang, People's Republic of China
| | - Haina Xie
- School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai, People's Republic of China
| | - Wei Huang
- Department of Pharmacy, Dahua Hospital, Shanghai, People's Republic of China
| | - Jingxian Zhang
- Department of Pharmacy, Guanghua Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai, People's Republic of China
| | - Wenye Jin
- Department of Pharmacy, Guanghua Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai, People's Republic of China
| | - Wenjing Jiang
- Department of Pharmacy, Dahua Hospital, Shanghai, People's Republic of China
| | - Donghao Xie
- Department of Pharmacy, Guanghua Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai, People's Republic of China.,School of Pharmacy, Jiangsu University, Zhenjiang, People's Republic of China
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18
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Feng G, Qin L, Liao Z, Xiao X, Li B, Cui W, Liang L, Mo Y, Huang G, Li P, Zhou X, Zhang Z, Xiao X. Knockdown Rab11-FIP2 inhibits migration and invasion of nasopharyngeal carcinoma via suppressing Rho GTPase signaling. J Cell Biochem 2019; 121:1072-1086. [PMID: 31452257 DOI: 10.1002/jcb.29344] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Accepted: 08/13/2019] [Indexed: 02/07/2023]
Abstract
Rab11 family interacting protein 2 (Rab11-FIP2) is a conserved protein and effector molecule for the small GTPase Rab11. By interacting with Rab11 and MYO5B, Rab11-FIP2 regulates endosome trafficking of plasma membrane proteins, promoting cellular motility. The endosomal trafficking system in nasopharyngeal carcinoma (NPC) remains unclear. Here, an outlier analysis using the Oncomine database suggested that Rab11-FIP2 but not Rab11 and MYO5B was overexpressed in NPC. We confirmed that the transcription of Rab11-FIP2 was upregulated in NPC cell lines and primary tumor tissues as compared with a normal nasopharyngeal epithelial cell line and normal nasopharynx tissues. We further confirmed the elevated protein expression level of Rab11-FIP2 in NPC biopsies. Instead of regulating the epithelial-mesenchymal transition or Akt signaling pathway, knockdown of Rab11-FIP2 inhibited the migration and invasion ability of NPC cell lines by decreasing the expression of Rac and Cdc42. In summary, Rab11-FIP2 could be an oncogene in NPC, mainly contributing to metastatic capacity by activating Rho GTPase signaling.
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Affiliation(s)
- Guofei Feng
- Department of Otolaryngology-Head & Neck Surgery, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Liting Qin
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Zhipeng Liao
- Department of Otolaryngology-Head & Neck Surgery, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Xiling Xiao
- Department of Otolaryngology-Head & Neck Surgery, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Bo Li
- Department of Radiotherapy, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Wanmeng Cui
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Libin Liang
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Yingxi Mo
- Department of Research, Affiliated Tumor Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Guangwu Huang
- Department of Otolaryngology-Head & Neck Surgery, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Ping Li
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Xiaoying Zhou
- Life Science Institute, Guangxi Medical University, Nanning, Guangxi, China
| | - Zhe Zhang
- Department of Otolaryngology-Head & Neck Surgery, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Xue Xiao
- Department of Otolaryngology-Head & Neck Surgery, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
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19
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Rab GTPases: Switching to Human Diseases. Cells 2019; 8:cells8080909. [PMID: 31426400 PMCID: PMC6721686 DOI: 10.3390/cells8080909] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Revised: 08/13/2019] [Accepted: 08/14/2019] [Indexed: 02/07/2023] Open
Abstract
Rab proteins compose the largest family of small GTPases and control the different steps of intracellular membrane traffic. More recently, they have been shown to also regulate cell signaling, division, survival, and migration. The regulation of these processes generally occurs through recruitment of effectors and regulatory proteins, which control the association of Rab proteins to membranes and their activation state. Alterations in Rab proteins and their effectors are associated with multiple human diseases, including neurodegeneration, cancer, and infections. This review provides an overview of how the dysregulation of Rab-mediated functions and membrane trafficking contributes to these disorders. Understanding the altered dynamics of Rabs and intracellular transport defects might thus shed new light on potential therapeutic strategies.
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20
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Gu X, Jiang Y, Xue W, Song C, Wang Y, Liu Y, Cui B. SPNS2 promotes the malignancy of colorectal cancer cells via regulating Akt and ERK pathway. Clin Exp Pharmacol Physiol 2019; 46:861-871. [PMID: 31206801 DOI: 10.1111/1440-1681.13124] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 05/27/2019] [Accepted: 06/11/2019] [Indexed: 12/13/2022]
Abstract
Colorectal cancer (CRC) is a prevalent malignant tumour that causes considerable cancer-related deaths globally. The sphingolipid transporter 2 (SPNS2), a sphingosine-1-phosphate (S1P) transporter, modulates multiple biological events including malignancy of cancer cells. In this study, the effects of SPNS2 on CRC progression were studied. We found that SPNS2 expression was significantly upregulated in CRC tissues compared to that in adjacent non-tumour tissues. To assess the role of SPNS2 in CRC cells, we performed loss- and gain-of-function experiments in SW480 and HCT116 cells, respectively. The results demonstrated that SPNS2 promoted proliferation, migration and invasion, and inhibited apoptosis in CRC cells. Additionally, SPNS2 enhanced the release of intracellular S1P, and increased S1P receptor 1 (S1PR1) and S1PR3 expression. Moreover, SPNS2 activated the Akt and ERK pathways, and the biological behaviours of SPNS2 were attenuated by Akt or ERK inhibitor in HCT116 cells. In conclusion, our results demonstrated that SPNS2 promoted proliferation, migration and invasion, and inhibited apoptosis by regulating S1P/S1PR1/3 axis and activating Akt and ERK pathway in CRC cells.
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Affiliation(s)
- Xinyue Gu
- Department of Colorectal Surgery, Harbin Medical University Cancer Hospital, Harbin, China
| | - Yang Jiang
- Department of Pathology, Harbin Medical University Cancer Hospital, Harbin, China
| | - Weinan Xue
- Department of Colorectal Surgery, Harbin Medical University Cancer Hospital, Harbin, China
| | - Chengxin Song
- Department of Colorectal Surgery, Harbin Medical University Cancer Hospital, Harbin, China
| | - Yangyang Wang
- Department of Colorectal Surgery, Harbin Medical University Cancer Hospital, Harbin, China
| | - Yanlong Liu
- Department of Colorectal Surgery, Harbin Medical University Cancer Hospital, Harbin, China
| | - Binbin Cui
- Department of Colorectal Surgery, Harbin Medical University Cancer Hospital, Harbin, China
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21
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Miki M, Oono T, Fujimori N, Takaoka T, Kawabe K, Miyasaka Y, Ohtsuka T, Saito D, Nakamura M, Ohkawa Y, Oda Y, Suyama M, Ito T, Ogawa Y. CLEC3A, MMP7, and LCN2 as novel markers for predicting recurrence in resected G1 and G2 pancreatic neuroendocrine tumors. Cancer Med 2019; 8:3748-3760. [PMID: 31129920 PMCID: PMC6639196 DOI: 10.1002/cam4.2232] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 04/23/2019] [Accepted: 04/25/2019] [Indexed: 12/23/2022] Open
Abstract
Although the postoperative recurrence rate for pancreatic neuroendocrine tumors (PNETs) is reported to be 13.5%-30%, the paucity of valuable biomarkers to predict recurrence poses a problem for the early detection of relapse. Hence, this study aimed to identify new biomarkers to predict the recurrence of PNETs. We performed RNA sequencing (RNA-Seq) on RNA isolated from frozen primary tumors sampled from all localized G1/G2 PNETs resected curatively from 1998 to 2015 in our institution. We calculated differentially expressed genes (DEGs) in tumor with and without recurrence (≥3 years) for the propensity-matched cohort. Gene ontology analysis for the identified DEGs was also performed. Furthermore, we evaluated the expression levels of candidate genes as recurrence predictors via immunostaining. Comparison of transcriptional levels in tumors with and without recurrence identified 166 DEGs. Up- and downregulated genes with high significance in these tumors were mainly related to extracellular organization and cell adhesion, respectively. We observed the top three upregulated genes, C-type lectin domain family 3 member A (CLEC3A), matrix metalloproteinase-7 (MMP7), and lipocalin2 (LCN2) immunohistochemically and compared their levels in recurrent and nonrecurrent tumors. Significantly higher recurrence rate was shown in patients with positive expression of CLEC3A (P = 0.028), MMP7 (P = 0.003), and LCN2 (P = 0.040) than that with negative expression. We identified CLEC3A, MMP7, and LCN2 known to be associated with the phosphatidylinositol-3-kinase/Akt pathway, as potential novel markers to predict the postoperative recurrence of PNETs.
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Affiliation(s)
- Masami Miki
- Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Takamasa Oono
- Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Nao Fujimori
- Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Takehiro Takaoka
- Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Ken Kawabe
- Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Yoshihiro Miyasaka
- Department of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Takao Ohtsuka
- Department of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Daisuke Saito
- Division of Bioinformatics, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan
| | - Masafumi Nakamura
- Department of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Yasuyuki Ohkawa
- Division of Transcriptomics, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan
| | - Yoshinao Oda
- Department of Anatomical Pathology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Mikita Suyama
- Division of Bioinformatics, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan
| | - Tetsuhide Ito
- Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.,Neuroendocrine Tumor Centre, Fukuoka Sanno Hospital, Internal University of Health and Welfare, Fukuoka, Japan
| | - Yoshihiro Ogawa
- Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.,Department of Molecular and Cellular Metabolism, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.,CREST, Japan Agency for Medical Research and Development, Tokyo, Japan
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22
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Dong W, Li H, Wu X. Rab11-FIP2 suppressed tumor growth via regulation of PGK1 ubiquitination in non-small cell lung cancer. Biochem Biophys Res Commun 2018; 508:60-65. [PMID: 30471866 DOI: 10.1016/j.bbrc.2018.11.108] [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: 11/07/2018] [Accepted: 11/16/2018] [Indexed: 02/07/2023]
Abstract
Mounting evidence has shown that the Rab11-FIP2 has critical roles in cancer cell growth. However, the clinical significance of Rab11-FIP2 in Non-small cell lung cancer (NSCLC) remains to be fully elucidated. In this study, we investigated the expression of Rab11-FIP2 using immunohistochemistry in 150 patients with NSCLC. We found that its expression level in NSCLC was much lower than that in the corresponding adjacent normal tissues. The DNA methylation data revealed that Rab11-FIP2 were significantly hypermethylated in NSCLC. The methylation level in the gene body was negatively correlated with the expression level of Rab11-FIP2 in NSCLC. Furthermore, enforced expression of Rab11-FIP2 dramatically reduced cancer cell proliferation and tumorigenesis, indicating a tumor suppressor role of PGK1 in NSCLC progression. Mechanistic investigations showed that Rab11-FIP2 interacted with the glycolytic kinase PGK1 and promoted its ubiquitination in NSCLC cells, leading to inactivation of the oncogenic AKT/mTOR signaling pathway. Overall, our data indicate that reduced expression of Rab11-FIP2 by DNA hypermethylation plays an important role in NSCLC tumor growth.
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Affiliation(s)
- Wenjie Dong
- Department of Internal Medicine-Oncology, The First Affiliated Hospital, Zhengzhou University, China.
| | - Huixia Li
- Department of Internal Medicine-Oncology, The First Affiliated Hospital, Zhengzhou University, China
| | - Xinai Wu
- Department of Internal Medicine-Oncology, The First Affiliated Hospital, Zhengzhou University, China.
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23
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Hu R, Wang MQ, Niu WB, Wang YJ, Liu YY, Liu LY, Wang M, Zhong J, You HY, Wu XH, Deng N, Lu L, Wei LB. SKA3 promotes cell proliferation and migration in cervical cancer by activating the PI3K/Akt signaling pathway. Cancer Cell Int 2018; 18:183. [PMID: 30459531 PMCID: PMC6236911 DOI: 10.1186/s12935-018-0670-4] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Accepted: 10/30/2018] [Indexed: 01/03/2023] Open
Abstract
Background Cervical cancer (CC) is one of the most common cancers among females worldwide. Spindle and kinetochore-associated complex subunit 3 (SKA3), located on chromosome 13q, was identified as a novel gene involved in promoting malignant transformation in cancers. However, the function and underlying mechanisms of SKA3 in CC remain unknown. Using the Oncomine database, we found that expression of SKA3 mRNA is higher in CC tissues than in normal tissues and is linked with poor prognosis. Methods In our study, immunohistochemistry showed increased expression of SKA3 in CC tissues. The effect of SKA3 on cell proliferation and migration was evaluated by CCK8, clone formation, Transwell and wound-healing assays in HeLa and SiHa cells with stable SKA3 overexpression and knockdown. In addition, we established a xenograft tumor model in vivo. Results SKA3 overexpression promoted cell proliferation and migration and accelerated tumor growth. We further identified that SKA3 is involved in regulating cell cycle progression and the PI3K/Akt signaling pathway via RNA-sequencing (RNA-Seq) and gene set enrichment analyses. Western blotting results revealed that SKA3 overexpression increased levels of p-Akt, cyclin E2, CDK2, cyclin D1, CDK4, E2F1 and p-Rb in HeLa cells. Additionally, the use of an Akt inhibitor (GSK690693) significantly reversed the cell proliferation capacity induced by SKA3 overexpression in HeLa cells. Conclusions We suggest that SKA3 overexpression contributes to CC cell growth and migration by promoting cell cycle progression and activating the PI3K-Akt signaling pathway, which may provide potential novel therapeutic targets for CC treatment.
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Affiliation(s)
- Rong Hu
- 1Shenzhen Hospital, Southern Medical University, No. 1333, Xinhu Road, Bao'an District, Shenzhen, 518101 Guangdong China.,2School of Traditional Chinese Medicine, Southern Medical University, No. 1838, Guangzhou Avenue North, Baiyun District, Guangzhou, 510515 Guangdong China
| | - Ming-Qing Wang
- 1Shenzhen Hospital, Southern Medical University, No. 1333, Xinhu Road, Bao'an District, Shenzhen, 518101 Guangdong China.,2School of Traditional Chinese Medicine, Southern Medical University, No. 1838, Guangzhou Avenue North, Baiyun District, Guangzhou, 510515 Guangdong China
| | - Wen-Bo Niu
- 5Cancer Research Institute, Southern Medical University, No. 1838, Guangzhou Avenue North, Baiyun District, Guangzhou, 510515 Guangdong China
| | - Yan-Jing Wang
- 3Zhujiang Hospital of Southern Medical University, No. 253, Industrial Avenue, Haizhu District, Guangzhou, 510280 Guangdong China
| | - Yang-Yang Liu
- Zhongshan Huangpu People's Hospital, No. 32, Long'an Street, Huangpu Town, Zhongshan, 528429 Guangdong China
| | - Ling-Yu Liu
- 1Shenzhen Hospital, Southern Medical University, No. 1333, Xinhu Road, Bao'an District, Shenzhen, 518101 Guangdong China.,2School of Traditional Chinese Medicine, Southern Medical University, No. 1838, Guangzhou Avenue North, Baiyun District, Guangzhou, 510515 Guangdong China
| | - Ming Wang
- 3Zhujiang Hospital of Southern Medical University, No. 253, Industrial Avenue, Haizhu District, Guangzhou, 510280 Guangdong China
| | - Juan Zhong
- 1Shenzhen Hospital, Southern Medical University, No. 1333, Xinhu Road, Bao'an District, Shenzhen, 518101 Guangdong China.,2School of Traditional Chinese Medicine, Southern Medical University, No. 1838, Guangzhou Avenue North, Baiyun District, Guangzhou, 510515 Guangdong China
| | - Hai-Yan You
- 1Shenzhen Hospital, Southern Medical University, No. 1333, Xinhu Road, Bao'an District, Shenzhen, 518101 Guangdong China.,2School of Traditional Chinese Medicine, Southern Medical University, No. 1838, Guangzhou Avenue North, Baiyun District, Guangzhou, 510515 Guangdong China
| | - Xiao-Hui Wu
- 1Shenzhen Hospital, Southern Medical University, No. 1333, Xinhu Road, Bao'an District, Shenzhen, 518101 Guangdong China.,2School of Traditional Chinese Medicine, Southern Medical University, No. 1838, Guangzhou Avenue North, Baiyun District, Guangzhou, 510515 Guangdong China
| | - Ning Deng
- 2School of Traditional Chinese Medicine, Southern Medical University, No. 1838, Guangzhou Avenue North, Baiyun District, Guangzhou, 510515 Guangdong China
| | - Lu Lu
- 4The First Affiliated Hospital, Guangzhou University of Chinese Medicine, No.16 Baiyun Airport Road, Baiyun District, Guangzhou, 510405 Guangdong China
| | - Lian-Bo Wei
- 1Shenzhen Hospital, Southern Medical University, No. 1333, Xinhu Road, Bao'an District, Shenzhen, 518101 Guangdong China.,2School of Traditional Chinese Medicine, Southern Medical University, No. 1838, Guangzhou Avenue North, Baiyun District, Guangzhou, 510515 Guangdong China
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Hua K, Li Y, Zhou H, Hu X, Chen Y, He R, Luo R, Zhou R, Bi D, Jin H. Haemophilus parasuis Infection Disrupts Adherens Junctions and Initializes EMT Dependent on Canonical Wnt/β-Catenin Signaling Pathway. Front Cell Infect Microbiol 2018; 8:324. [PMID: 30258822 PMCID: PMC6143654 DOI: 10.3389/fcimb.2018.00324] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Accepted: 08/24/2018] [Indexed: 12/16/2022] Open
Abstract
In this study, animal experimentation verified that the canonical Wnt/β-catenin signaling pathway was activated under a reduced activity of p-β-catenin (Ser33/37/Thr41) and an increased accumulation of β-catenin in the lungs and kidneys of pigs infected with a highly virulent strain of H. parasuis. In PK-15 and NPTr cells, it was also confirmed that infection with a high-virulence strain of H. parasuis induced cytoplasmic accumulation and nuclear translocation of β-catenin. H. parasuis infection caused a sharp degradation of E-cadherin and an increase of the epithelial cell monolayer permeability, as well as a broken interaction between β-catenin and E-cadherin dependent on Wnt/β-catenin signaling pathway. Moreover, Wnt/β-catenin signaling pathway also contributed to the initiation of epithelial-mesenchymal transition (EMT) during high-virulence strain of H. parasuis infection with expression changes of epithelial/mesenchymal markers, increased migratory capabilities as well as the morphologically spindle-like switch in PK-15 and NPTr cells. Therefore, we originally speculated that H. parasuis infection activates the canonical Wnt/β-catenin signaling pathway leading to a disruption of the epithelial barrier, altering cell structure and increasing cell migration, which results in severe acute systemic infection characterized by fibrinous polyserositis during H. parasuis infection.
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Affiliation(s)
- Kexin Hua
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, China.,College of Animal Medicine, Huazhong Agricultural University, Wuhan, China.,Hubei Provincial Key Laboratory of Preventive Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Yangjie Li
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, China.,College of Animal Medicine, Huazhong Agricultural University, Wuhan, China.,Hubei Provincial Key Laboratory of Preventive Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Hufeng Zhou
- Department of Medicine, Brigham and Women's Hospital, Boston, MA, United States.,Department of Immunology and Microbiology, Harvard Medical School, Boston, MA, United States
| | - Xueying Hu
- College of Animal Medicine, Huazhong Agricultural University, Wuhan, China
| | - Yushan Chen
- Brain and Cognition Research Institute, Wuhan University of Science and Technology, Wuhan, China.,Key Laboratory of Occupational Hazard Identification and Control in Hubei Province, Wuhan University of Science and Technology, Wuhan, China
| | - Rongrong He
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, China.,College of Animal Medicine, Huazhong Agricultural University, Wuhan, China.,Hubei Provincial Key Laboratory of Preventive Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Rui Luo
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, China.,College of Animal Medicine, Huazhong Agricultural University, Wuhan, China.,Hubei Provincial Key Laboratory of Preventive Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Rui Zhou
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, China.,College of Animal Medicine, Huazhong Agricultural University, Wuhan, China.,Hubei Provincial Key Laboratory of Preventive Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Dingren Bi
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, China.,College of Animal Medicine, Huazhong Agricultural University, Wuhan, China.,Hubei Provincial Key Laboratory of Preventive Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Hui Jin
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, China.,College of Animal Medicine, Huazhong Agricultural University, Wuhan, China.,Hubei Provincial Key Laboratory of Preventive Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
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25
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Xu H, Yuan Y, Wu W, Zhou M, Jiang Q, Niu L, Ji J, Liu N, Zhang L, Wang X. Hypoxia stimulates invasion and migration of human cervical cancer cell lines HeLa/SiHa through the Rab11 trafficking of integrin αvβ3/FAK/PI3K pathway-mediated Rac1 activation. J Biosci 2018; 42:491-499. [PMID: 29358562 DOI: 10.1007/s12038-017-9699-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Hypoxia plays a key role in tumour cell survival, invasion, and metastasis. An increasing number of studies have attempted to characterize the tumour response to hypoxia and to identify predictive markers of disease. Here we show that hypoxia increases tumour cell invasion and migration by the modulation of Rab11, an important molecule for vesicular trafficking. In our study, we found that Rab11, together with the activation of Rac1, could stimulate invasion and migration of cervical cancer cell lines HeLa/SiHa in hypoxia. Activation of Rac1 activity by hypoxia seems to be central to carcinoma invasion. We also found that these effects could be related to the integrin αvβ3. In addition, we studied the molecular pathway for this process. Our results showed that in cervical cancer cell lines HeLa/SiHa, Rac1 activation in hypoxia could stimulate invasion and migration, and this process was mediated by integrin αvβ3-mediated FAK and PI3K phosphorylation. Furthermore, hypoxia induced a dramatic increase in αvβ3 integrin surface expression, and this increase is dependent on Rab11. In conclusion, our study might provide a new mechanism for the effect of hypoxia on stimulating cervical carcinoma invasion.
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Affiliation(s)
- Hao Xu
- Department of Radiotherapy, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
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26
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Gong X, Liu J, Zhang X, Dong F, Liu Y, Wang P. Rab11 Functions as an Oncoprotein via Nuclear Factor kappa B (NF-κB) Signaling Pathway in Human Bladder Carcinoma. Med Sci Monit 2018; 24:5093-5101. [PMID: 30032159 PMCID: PMC6067026 DOI: 10.12659/msm.911454] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Background Elevated expression of Rab11 has been reported in different human cancers, including human bladder carcinoma. This study, we investigated the biological effects and mechanism of Rab11 overexpression in human bladder carcinoma for the first time. Material/Methods Rab11 expression in bladder cancer tissues was detected using immunohistochemistry and Western blot analysis. Then, Rab11 expression was inhibited in T24 cells and it was overexpressed in BIU-87 cells. The effects of Rab11 perturbations on cell growth rate and invasion were analyzed by CCK8, cell cycle assay, and matrix gel invasion assay. MMP-9, cyclin E, and cyclin D1 levels were studied using Western blot and qPCR. NF-κB activity was studied by luciferase assay. Results High expression of Rab11 was detected in 41.5% (66/159) of tumor specimens. We found a significant correlation between high Rab11 expression and depth of tumor invasion (P=0.004). Rab11 overexpression was observed to promote the growth rate and invasiveness of cancer cells through upregulation of MMP9, cyclin E, and cyclin D1 levels. Rab11 overexpression further elevated NF-κB reporter activity and enhanced p-IκB expression. Use of BAY 11-7082, a noted NF-κB inhibitor, partially abolished overexpression of MMP9 and cyclin D1 by Rab11. Conclusions Our research proved that high Rab11 expression enhances cellular multiplication and invasiveness of bladder cancer, possibly by regulating the NF-κB signaling pathway.
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Affiliation(s)
- Xue Gong
- Department of Urology, The Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning, China (mainland)
| | - Jia Liu
- Department of Urology, The Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning, China (mainland)
| | - Xiling Zhang
- Department of Urology, The Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning, China (mainland)
| | - Fengming Dong
- Department of Urology, The Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning, China (mainland)
| | - Yili Liu
- Department of Urology, The Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning, China (mainland)
| | - Ping Wang
- Department of Urology, The Fourth Affiliated Hospital of China Medical University, Shenyang, China (mainland)
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27
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Inhibition of the miR-192/215-Rab11-FIP2 axis suppresses human gastric cancer progression. Cell Death Dis 2018; 9:778. [PMID: 30006518 PMCID: PMC6045576 DOI: 10.1038/s41419-018-0785-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Revised: 06/07/2018] [Accepted: 06/11/2018] [Indexed: 12/17/2022]
Abstract
Less than a century ago, gastric cancer (GC) was the most common cancer throughout the world. Despite advances in surgical, chemotherapeutic, and radiotherapeutic treatment, GC remains the number 3 cancer killer worldwide. This fact highlights the need for better diagnostic biomarkers and more effective therapeutic targets. RAB11-FIP2, a member of the Rab11 family of interacting proteins, exhibits potential tumor suppressor function. However, involvement of RAB11-FIP2 in gastric carcinogenesis is yet to be elucidated. In this study, we demonstrated that RAB11-FIP2 was downregulated in GC tissues and constituted a target of the known onco-miRs, miR-192/215. We also showed that functionally, Rab11-FIP2 regulation by miR-192/215 is involved in GC-related biological activities. Finally, RAB11-FIP2 inhibition by miR-192/215 affected the establishment of cell polarity and tight junction formation in GC cells. In summary, this miR-192/215–Rab11-FIP2 axis appears to represent a new molecular mechanism underlying GC progression, while supplying a promising avenue of further research into diagnosis and therapy of GC.
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28
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Dong W, Wu X. Overexpression of Rab11-FIP2 in colorectal cancer cells promotes tumor migration and angiogenesis through increasing secretion of PAI-1. Cancer Cell Int 2018. [PMID: 29540997 PMCID: PMC5845176 DOI: 10.1186/s12935-018-0532-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Background Rab11 family-interacting protein 2 (Rab11-FIP2) can interact with MYO5B and plays an important role in regulating plasma membrane recycling. However, little is known about the clinical significance of DUSP2 in colorectal cancer (CRC). Methods In this study, we investigated Rab11-FIP2 expression by immunohistochemistry in 125 patients with colorectal cancer. Conditioned media containing all secreted factors was harvested. Chemokine secretion and expression were analyzed by Chemi-array. Results We found that the expression level of Rab11-FIP2 was significantly increased in colorectal cancer tissues and high expression of Rab11-FIP2 was closely correlated with nodal metastasis in colorectal cancer patients. Rab11-FIP2 overexpression promoted colorectal cancer metastasis in vitro and in vivo. Finally, we demonstrated that Rab11-FIP2 overexpression may contribute to increased secretion of PAI-1 in human colorectal cancer cells. Conclusions Our findings reveal a novel mechanism underlying the role of Rab11-FIP2 in colorectal cancer dissemination, suggesting that targeting Rab11-FIP2 might be a promising therapeutic strategy for CRC. Electronic supplementary material The online version of this article (10.1186/s12935-018-0532-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Wenjie Dong
- Department of Medical Oncology, the First Affiliated Hospital, Zhengzhou University, 1 East Jianshe Road, Zhengzhou, 450052 Henan People's Republic of China
| | - Xinai Wu
- Department of Medical Oncology, the First Affiliated Hospital, Zhengzhou University, 1 East Jianshe Road, Zhengzhou, 450052 Henan People's Republic of China
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29
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Shu R, Xu Y, Tian Y, Zeng Y, Sun L, Gong F, Lei Y, Wang K, Luo H. Differential expression profiles of long noncoding RNA and mRNA in colorectal cancer tissues from patients with lung metastasis. Mol Med Rep 2018; 17:5666-5675. [PMID: 29436635 PMCID: PMC5866008 DOI: 10.3892/mmr.2018.8576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Accepted: 11/21/2017] [Indexed: 11/18/2022] Open
Abstract
Lungs are the most common extra-abdominal site of metastasis of colorectal cancer (CRC), in which long noncoding RNA (lncRNA) may serve a role. In the present study, a high-throughput microarray assay was performed to detect lncRNA expression and identify novel targets for further study of lung metastasis in CRC. In the CRC tissues from patients with lung metastasis, 7,632 lncRNA (3,574 upregulated and 4,058 downregulated) and 6,185 mRNA (3,394 upregulated and 2,791 downregulated) were detected to be differentially expressed with a fold change ≥2 and P<0.05 compared with the CRC tissues without metastasis. A total of six differentially regulated lncRNA were confirmed by reverse transcription-quantitative polymerase chain reaction in 20 pairs of CRC samples. Furthermore, gene ontology and pathway analysis were conducted to predict the possible roles of the identified mRNA. The upregulated mRNA were associated with cell division (biological processes), protein kinase B binding (molecular functions) and cellular components. The downregulated mRNA were associated with cell adhesion, platelet-derived growth factor binding and membrane components. Pathway analysis determined that the upregulated mRNA were associated with the Wnt signaling pathway in the CRC tissues from patients with lung metastasis, while the downregulated mRNA were associated with the phosphoinositide 3-kinase/Akt signaling pathway. The results of the present study suggested that differentially expressed lncRNA may be associated with lung metastasis and may provide insights into the biology and prevention of lung metastasis.
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Affiliation(s)
- Ruo Shu
- Department of Gastrointestinal and Hernia Surgery, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China
| | - Yu Xu
- Department of Gastrointestinal and Hernia Surgery, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China
| | - Yan Tian
- Kunming Engineering Technology Center of Digestive Disease, Kunming, Yunnan 650032, P.R. China
| | - Yujian Zeng
- Department of Gastrointestinal and Hernia Surgery, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China
| | - Liang Sun
- Kunming Engineering Technology Center of Digestive Disease, Kunming, Yunnan 650032, P.R. China
| | - Fangyou Gong
- Kunming Engineering Technology Center of Digestive Disease, Kunming, Yunnan 650032, P.R. China
| | - Yi Lei
- Kunming Engineering Technology Center of Digestive Disease, Kunming, Yunnan 650032, P.R. China
| | - Kunhua Wang
- Department of Gastrointestinal and Hernia Surgery, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China
| | - Huayou Luo
- Department of Gastrointestinal and Hernia Surgery, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China
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30
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Wang JZ, Yang SX, Ye F, Xia XP, Shao XX, Xia SL, Zheng B, Xu CL. Hypoxia-induced Rab11-family interacting protein 4 expression promotes migration and invasion of colon cancer and correlates with poor prognosis. Mol Med Rep 2017; 17:3797-3806. [PMID: 29257314 DOI: 10.3892/mmr.2017.8283] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Accepted: 09/06/2017] [Indexed: 11/06/2022] Open
Abstract
Rab11-family interacting proteins (Rab11‑FIPs) are associated with the progression of various tumors; however, their expression and clinical significance in colorectal cancer (CRC) remains largely undetermined. In this study, the clinical implications, functions and underlying mechanisms of Rab11‑FIP4 in CRC were investigated. Immunohistochemical analysis revealed that expression of Rab11‑FIP4 was significantly increased in human CRC tissues and correlated with poor prognosis of patients with CRC. Overexpression of Rab11‑FIP4 in the CRC cell line significantly promoted cell proliferation, migration and invasion in vitro and tumor metastasis in vivo. Furthermore, the results of a co‑immunoprecipitation assay and western blot analysis demonstrated that Rab11‑FIP4 interacted with Rab11 and insulin‑like growth factor 1 receptor, and increased the phosphorylation of extracellular signal‑regulated kinase 1/2 and AKT serine/threonine kinase. In addition, hypoxia contributed to the upregulation of Rab11‑FIP4 expression via hypoxia‑inducible factor‑1α activation of the Rab11‑FIP4 promoter. In conclusion, the results of the present study suggest that Rab11‑FIP4 may act as an oncogene in CRC, and may be a potential therapeutic target for the treatment of patients with CRC.
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Affiliation(s)
- Jian-Zhang Wang
- Department of Gastroenterology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, P.R. China
| | - Shou-Xing Yang
- Department of Gastroenterology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, P.R. China
| | - Fangpeng Ye
- Department of Gastroenterology, Ruian People's Hospital, Wenzhou, Zhejiang 325200, P.R. China
| | - Xuan-Ping Xia
- Department of Gastroenterology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, P.R. China
| | - Xiao-Xiao Shao
- Department of Gastroenterology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, P.R. China
| | - Sheng-Long Xia
- Department of Gastroenterology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, P.R. China
| | - Bo Zheng
- Department of Gastroenterology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, P.R. China
| | - Chang-Long Xu
- Department of Gastroenterology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, P.R. China
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31
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Liu J, An H, Yuan W, Feng Q, Chen L, Ma J. Prognostic Relevance and Function of MSX2 in Colorectal Cancer. J Diabetes Res 2017; 2017:3827037. [PMID: 28286778 PMCID: PMC5327771 DOI: 10.1155/2017/3827037] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Accepted: 12/01/2016] [Indexed: 12/20/2022] Open
Abstract
Colorectal cancer patients with diabetes had the high risks of total mortality. High expression of MSX2 is related to development of diabetes. There are few reports about the clinical implications and function of MSX2 in colorectal cancer (CRC). The purpose of this study is to investigate the relationship between the expression of MSX2 and clinical relevance and discover the possible mechanism of MSX2 in the development of CRC. Compared with adjacent tissues, the expression of MSX2 was higher in tumor tissues in both mRNA and protein levels (P < 0.01). Kaplan-Meier survival analysis showed that high mRNA expression of MSX2 was associated with short survival time (P = 0.013). Chi-squared test analysis indicated that MSX2 expression was related to tumor size (P = 0.04), tumor locus (P = 0.025), clinical stage (P < 0.001), tumor invasion (P = 0.003), lymphatic metastasis (P = 0.01), and distant metastasis (P = 0.033). In vitro experiments demonstrated that knockdown of MSX2 expression attenuated cell proliferation and invasion, promoted cell cycle arrest and apoptosis, and inactivated Akt phosphorylation. In conclusion, MSX2 played a crucial role in the progression of CRC and may be a potential novel prognostic factor and therapeutic target for CRC therapy. Our work may provide certain enlightenment for investigating the mechanism of MSX2 in the process of diabetes.
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Affiliation(s)
- Jiancheng Liu
- State Key Laboratory of Molecular Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Huaying An
- State Key Laboratory of Molecular Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Wei Yuan
- State Key Laboratory of Molecular Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
- Clinical Immunology Center, Chinese Academy of Medical Science, Beijing 100730, China
| | - Qiang Feng
- Department of Colorectal Surgery, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Lianzhen Chen
- Department of Pharmacy, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
- *Lianzhen Chen: and
| | - Jie Ma
- State Key Laboratory of Molecular Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
- Clinical Immunology Center, Chinese Academy of Medical Science, Beijing 100730, China
- Beijing Hospital, National Center of Gerontology, Beijing 100730, China
- *Jie Ma:
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32
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He Y, Ye M, Zhou L, Shan Y, Lu G, Zhou Y, Zhong J, Zheng J, Xue Z, Cai Z. High Rab11-FIP4 expression predicts poor prognosis and exhibits tumor promotion in pancreatic cancer. Int J Oncol 2016; 50:396-404. [PMID: 28035375 PMCID: PMC5238782 DOI: 10.3892/ijo.2016.3828] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Accepted: 12/09/2016] [Indexed: 02/07/2023] Open
Abstract
Some studies have demonstrated that Rab11-family interacting proteins (Rab11-FIPs) are connected with the tumorigenesis, and they may act as tumor promoters in some cancers. The clinicopathological significance of Rab11-family interacting protein 4 (Rab11-FIP4) expression and its possible effects on pancreatic cancer (PC) are still undiscovered. In this study, Rab11-FIP4 protein expression level in 60 PC specimens and pair-matched non-cancerous samples were detected by immunohistochemistry analysis. The results were analysed and compared with each patients' clinical data. Rab11-FIP4 expression in PC tissues increased significantly more than that of adjacent non-cancerous tissues (P=0.0001). Overexpression of Rab11-FIP4 in the PC tissues was significantly related to tumor size (P=0.0001), histological grade (P=0.028), metastasis (P=0.001) and TNM stage (P=0.004) but not with age (P=0.832), gender (P=0.228) or tumor site (P=0.875). Kaplan-Meier survival analysis showed that overexpression of Rab11-FIP4 was significantly related to overall survival time (P=0.0036). In addition, Rab11-FIP4 in PANC-1 pancreatic cancer cells were successfully knocked-out using the CRISPR/Cas9 system. Rab11-FIP4 knockout in PANC-1 cells inhibited cell growth, invasion and metastasis, and arrested cell cycle progression, but did not alter apoptosis. Our findings suggest that overexpression of Rab11-FIP4 predicts poor clinical outcomes for pancreatic cancer and contributes to pancreatic tumor progression.
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Affiliation(s)
- Yun He
- Department of Gastroenterology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Mengsi Ye
- Department of Gastroenterology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Lingling Zhou
- Department of Pathology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Yunfeng Shan
- Department of Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Guangrong Lu
- Department of Gastroenterology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Yuhui Zhou
- Department of Gastroenterology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Jinwei Zhong
- Department of Gastroenterology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Jihang Zheng
- Department of General Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Zhanxiong Xue
- Department of Gastroenterology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Zhenzhai Cai
- Department of Gastroenterology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
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Nakano N, Matsuda S, Ichimura M, Minami A, Ogino M, Murai T, Kitagishi Y. PI3K/AKT signaling mediated by G protein-coupled receptors is involved in neurodegenerative Parkinson's disease (Review). Int J Mol Med 2016; 39:253-260. [DOI: 10.3892/ijmm.2016.2833] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Accepted: 12/12/2016] [Indexed: 11/05/2022] Open
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Restelli M, Magni M, Ruscica V, Pinciroli P, De Cecco L, Buscemi G, Delia D, Zannini L. A novel crosstalk between CCAR2 and AKT pathway in the regulation of cancer cell proliferation. Cell Death Dis 2016; 7:e2453. [PMID: 27809307 PMCID: PMC5260903 DOI: 10.1038/cddis.2016.359] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Revised: 09/29/2016] [Accepted: 10/04/2016] [Indexed: 02/06/2023]
Abstract
Human CCAR2 has recently emerged as having a pivotal role in the DNA damage response, promoting apoptosis and repair of heterochromatic DNA breaks. However, less is known about the function of CCAR2 in tumor formation and cancer progression. Here, we demonstrate, for the first time, that CCAR2 loss inhibits the proliferation of cancer cells, but preserves the growth of normal cells. Investigating the mechanisms responsible for this differential effect, we found that CCAR2 depletion specifically impairs the activation of AKT pathway in cancer cells, but not in normal cells, by reducing AKT phosphorylation on Ser473. This effect is achieved through the transcriptional upregulation of TRB3 gene and accumulation of TRB3 protein, which then binds to and inhibits the phosphorylation and activation of AKT. The defective activation of AKT finally results in reduced GSK3β phosphorylation, prevention of G1/S transition and inhibition of cancer cell growth. These results establish an important role for CCAR2 in cancer cells proliferation and could shed new light on novel therapeutic strategies against cancer, devoid of detrimental side effects.
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Affiliation(s)
- Michela Restelli
- Department of Experimental Oncology, Fondazione IRCCS Istituto Nazionale dei Tumori, Via Amadeo 42, Milan 20133, Italy
| | - Martina Magni
- Department of Experimental Oncology, Fondazione IRCCS Istituto Nazionale dei Tumori, Via Amadeo 42, Milan 20133, Italy
| | - Vincenzo Ruscica
- Department of Biochemistry, Max Planck Institute for Developmental Biology, Tubingen, Germany
| | - Patrizia Pinciroli
- Department of Experimental Oncology, Fondazione IRCCS Istituto Nazionale dei Tumori, Via Amadeo 42, Milan 20133, Italy
| | - Loris De Cecco
- Department of Experimental Oncology, Fondazione IRCCS Istituto Nazionale dei Tumori, Via Amadeo 42, Milan 20133, Italy
| | - Giacomo Buscemi
- Department of Biosciences, University of Milan, via Celoria 26, Milan 20133, Italy
| | - Domenico Delia
- Department of Experimental Oncology, Fondazione IRCCS Istituto Nazionale dei Tumori, Via Amadeo 42, Milan 20133, Italy
| | - Laura Zannini
- Department of Experimental Oncology, Fondazione IRCCS Istituto Nazionale dei Tumori, Via Amadeo 42, Milan 20133, Italy
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Abstract
A large group of small Rab GTPases which mediate secretory and endosomal membrane transport, as well as autophagosome biogenesis, are essential components of vesicle trafficking machinery. Specific Rab protein together with the cognate effectors coordinates the dynamics of trafficking pathway and determines the cargo proteins destination. Functional impairments of Rab proteins by mutations or post-translational modifications disrupting the regulatory network of vesicle trafficking have been implicated in tumorigenesis. Therefore, the vesicle transport regulators play essential roles in the mediation of cancer cell biology, including uncontrolled cell growth, invasion and metastasis. The context-dependent role of the same Rab to act as either an oncoprotein or tumor suppressor in different cancers is found. Such discrepancies may be due in part to the interaction of specific Rab protein with different effectors or cargos in various tumors. Here, we review recent advances in the roles of Rab GTPases in communicating with other effectors in tumor progression. In this review, we also emphasize dysregulation of Rab-mediated membrane delivery shifting normal cell behaviors toward malignancy. Thus, recovery of the dysregulated vesicle trafficking systems in cancer cells may provide future directions for potential strategy to restrain tumor progression.
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Affiliation(s)
- Hong-Tai Tzeng
- Department of Pharmacology, National Cheng Kung University, College of Medicine, No.1, University Road, Tainan, 70101, Taiwan, People's Republic of China
| | - Yi-Ching Wang
- Department of Pharmacology, National Cheng Kung University, College of Medicine, No.1, University Road, Tainan, 70101, Taiwan, People's Republic of China. .,Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, No.1, University Road, Tainan, 70101, Taiwan, People's Republic of China.
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Wang Y, Guo H, Zhang D, Yu X, Leng X, Li S, Zhu W. Overexpression of SOX18 correlates with accelerated cell growth and poor prognosis in human pancreatic ductal adenocarcinoma. Biochem Biophys Res Commun 2016; 479:510-516. [DOI: 10.1016/j.bbrc.2016.09.099] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 09/20/2016] [Indexed: 12/23/2022]
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PTP1B promotes aggressiveness of breast cancer cells by regulating PTEN but not EMT. Tumour Biol 2016; 37:13479-13487. [DOI: 10.1007/s13277-016-5245-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Accepted: 07/15/2016] [Indexed: 11/26/2022] Open
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