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Zhao H, Wu G, Luo Y, Xie Y, Han Y, Zhang D, Han Q, Zhao X, Qin Y, Li Q, Wang E. WNT5B promotes the malignant phenotype of non-small cell lung cancer via the FZD3-DVL3-RAC1-PCP-JNK pathway. Cell Signal 2024; 122:111330. [PMID: 39094673 DOI: 10.1016/j.cellsig.2024.111330] [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: 04/08/2024] [Revised: 07/10/2024] [Accepted: 07/30/2024] [Indexed: 08/04/2024]
Abstract
The WNT5B ligand regulates the non-canonical wingless-related integration site (WNT)-planar cell polarity (PCP) pathway. However, the detailed mechanism underlying the activity of WNT5B in the WNT-PCP pathway in non-small cell lung cancer (NSCLC) is unclear. In this study, we assessed the clinicopathological significance of WNT5B expression in NSCLC specimens. WNT5B-overexpression and -knockdown NSCLC cell lines were generated in vivo and in vitro, respectively. WNT5B overexpression in NSCLC specimens correlates with advanced tumor node metastasis (TNM) stage, lymph node metastasis, and poor prognosis in patients with NSCLC. Additionally, WNT5B promotes the malignant phenotype of NSCLC cells in vivo and in vitro. Interactions were identified among WNT5B, frizzled3 (FZD3), and disheveled3 (DVL3) in NSCLC cells, leading to the activation of WNT-PCP signaling. The FZD3 receptor initiates DVL3 recruitment to the membrane for phosphorylation in a WNT5B ligand-dependent manner and activates c-Jun N-terminal kinase (JNK) signaling via the small GTPase RAC1. Furthermore, the deletion of the DEP domain of DVL3 abrogated these effects. Overall, we demonstrated a novel signal transduction pathway in which WNT5B recruits DVL3 to the membrane via its DEP domain through interaction with FZD3 to promote RAC1-PCP-JNK signaling, providing a potential target for clinical intervention in NSCLC treatment.
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Affiliation(s)
- Huanyu Zhao
- Department of Pathology, The First Hospital and College of Basic Medical Sciences, China Medical University, Shenyang, China.
| | - Guangping Wu
- Department of Pathology, The First Hospital and College of Basic Medical Sciences, China Medical University, Shenyang, China.
| | - Yuan Luo
- Department of Pathology, The First Hospital and College of Basic Medical Sciences, China Medical University, Shenyang, China.
| | - Yusai Xie
- Department of Pathology, The First Hospital and College of Basic Medical Sciences, China Medical University, Shenyang, China.
| | - Yang Han
- Department of Pathology, The First Hospital and College of Basic Medical Sciences, China Medical University, Shenyang, China.
| | - Di Zhang
- Department of Pathology, The First Hospital and College of Basic Medical Sciences, China Medical University, Shenyang, China.
| | - Qiang Han
- Department of Pathology, The First Hospital and College of Basic Medical Sciences, China Medical University, Shenyang, China.
| | - Xinran Zhao
- Department of Pathology, The First Hospital and College of Basic Medical Sciences, China Medical University, Shenyang, China.
| | - Ye Qin
- Department of Pathology, The First Hospital and College of Basic Medical Sciences, China Medical University, Shenyang, China.
| | - Qingchang Li
- Department of Pathology, The First Hospital and College of Basic Medical Sciences, China Medical University, Shenyang, China.
| | - Enhua Wang
- Department of Pathology, The First Hospital and College of Basic Medical Sciences, China Medical University, Shenyang, China.
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2
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Wu Q, Du X, Cheng J, Qi X, Liu H, Lv X, Gong X, Shao C, Wang M, Yue L, Yang X, Li S, Zhang Y, Li X, Yang H. PECAM-1 drives β-catenin-mediated EndMT via internalization in colon cancer with diabetes mellitus. Cell Commun Signal 2023; 21:203. [PMID: 37580771 PMCID: PMC10426208 DOI: 10.1186/s12964-023-01193-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 06/10/2023] [Indexed: 08/16/2023] Open
Abstract
BACKGROUND Diabetes mellitus (DM) is considered to be a risk factor in carcinogenesis and progression, although the biological mechanisms are not well understood. Here we demonstrate that platelet-endothelial cell adhesion molecule 1 (PECAM-1) internalization drives β-catenin-mediated endothelial-mesenchymal transition (EndMT) to link DM to cancer. METHODS The tumor microenvironment (TME) was investigated for differences between colon cancer with and without DM by mRNA-microarray analysis. The effect of DM on colon cancer was determined in clinical patients and animal models. Furthermore, EndMT, PECAM-1 and Akt/GSK-3β/β-catenin signaling were analyzed under high glucose (HG) and human colon cancer cell (HCCC) supernatant (SN) or coculture conditions by western and immunofluorescence tests. RESULTS DM promoted the progression and EndMT occurrence of colon cancer (CC). Regarding the mechanism, DM induced PECAM-1 defection from the cytomembrane, internalization and subsequent accumulation around the cell nucleus in endothelial cells, which promoted β-catenin entry into the nucleus, leading to EndMT occurrence in CC with DM. Additionally, Akt/GSK-3β signaling was enhanced to inhibit the degradation of β-catenin, which regulates the process of EndMT. CONCLUSIONS PECAM-1 defects and/or internalization are key events for β-catenin-mediated EndMT, which is significantly boosted by enhanced Akt/GSK-3β signaling in the DM-associated TME. This contributes to the mechanism by which DM promotes the carcinogenesis and progression of CC. Video Abstract.
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Affiliation(s)
- Qing Wu
- Department of Anatomy, Harbin Medical University, Harbin, China
| | - Xingxing Du
- Department of Anatomy, Harbin Medical University, Harbin, China
| | - Jianing Cheng
- Department of Anatomy, Harbin Medical University, Harbin, China
| | - Xiuying Qi
- Department of Anatomy, Harbin Medical University, Harbin, China
| | - Huan Liu
- Department of Humanities Foundation, Heilongjiang Nursing College, Harbin, China
| | - Xiaohong Lv
- Department of Anatomy, Harbin Medical University, Harbin, China
| | - Xieyang Gong
- Department of Obstetrics and Gynecology, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Changxin Shao
- Department of Obstetrics and Gynecology, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Muhong Wang
- Colorectal Cancer Surgical Ward 2, Harbin Medical University Cancer Hospital, Harbin, China
| | - Luxiao Yue
- Department of Anatomy, Harbin Medical University, Harbin, China
| | - Xin Yang
- Department of Anatomy, Harbin Medical University, Harbin, China
| | - Shiyu Li
- Department of Anatomy, Harbin Medical University, Harbin, China
| | - Yafang Zhang
- Department of Anatomy, Harbin Medical University, Harbin, China.
| | - Xuemei Li
- Department of Anatomy, Harbin Medical University, Harbin, China.
| | - Huike Yang
- Department of Anatomy, Harbin Medical University, Harbin, China.
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3
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Kmiecik SW, Shi Q, Chen YG, Moormann J, Hildebrandt TM, Schade A, Fischer M, Kim KQ. Crafting figures to describe cellular processes. Trends Biochem Sci 2023; 48:491-494. [PMID: 37172571 DOI: 10.1016/j.tibs.2022.09.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 09/14/2022] [Indexed: 05/15/2023]
Affiliation(s)
- Szymon W Kmiecik
- Center for Molecular Biology of Heidelberg University (ZMBH), DKFZ-ZMBH-Alliance, Heidelberg, Germany.
| | - Qiaoni Shi
- School of Life Sciences, Tsinghua University, Beijing 100084, China.
| | - Ye-Guang Chen
- School of Life Sciences, Tsinghua University, Beijing 100084, China.
| | - Jannis Moormann
- Institute for Plant Sciences, Cluster of Excellence on Plant Sciences (CEPLAS), University of Cologne, Cologne, Germany.
| | - Tatjana M Hildebrandt
- Institute for Plant Sciences, Cluster of Excellence on Plant Sciences (CEPLAS), University of Cologne, Cologne, Germany.
| | - Amy Schade
- Harvard Medical School, Brigham and Women's Hospital, Boston, MA, USA.
| | - Martin Fischer
- Leibniz Institute on Aging - Fritz Lipmann Institute (FLI), Jena, Germany.
| | - Kyusik Q Kim
- Department of Biology, Washington University in St. Louis, St. Louis, MO, USA.
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4
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He R, Chen Y, Qian C, Hu Y, Huang X, Tao R. Dishevelled segment polarity protein 2 promotes gastric cancer progression through Wnt/β-catenin pathway. Tissue Cell 2023; 82:102119. [PMID: 37257286 DOI: 10.1016/j.tice.2023.102119] [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: 01/01/2023] [Revised: 05/12/2023] [Accepted: 05/23/2023] [Indexed: 06/02/2023]
Abstract
Dishevelled family proteins (DVL1-3), key scaffold proteins, act on canonical and non-canonical Wnt/β-catenin signaling pathway. DVL has been implicated in various tumor progression. However, its role and underlying mechanisms in gastric cancer (GC) remain unclear. The aim of this study was to investigate the role of DVL in GC development using cell lines and 209 GC specimens. We analyzed three orthologs of DVL in GC tissues and paired adjacent non-tumor tissues, and only DVL2 is highly expressed in GC tissues. We also analyzed clinicopathological data on DVL2 expression in gastric cancer specimens. In immunohistochemistry, DVL2 expression was up-regulated in GC tissues compared with paired adjacent non-tumor tissues (153/209, 73.2%). DVL2 expression level was significantly correlated with many clinicopathological parameters such as T stage (P < 0.001) and N stage (P < 0.001). Survival analysis showed that the overall survival (OS) of patients with high expression of DVL2 was significantly shorter than those with low expression. Multivariate Cox regression analysis revealed that DVL2 expression was an important and independent prognostic factor for gastric cancer patients (P = 0.011, HR=1.78, 95%CI (1.14-2.79). Depletion of endogenous DVL2 using short hairpin RNA (shRNA) inhibited GC cell proliferation, migration, and invasion. The abnormal activation of Wnt/β-catenin signaling pathway is mainly achieved through the abnormal expression of DVL2. DVL2 is highly expressed in gastric cancer tissues, which may be a new independent risk factor for the prognosis of gastric cancer patients. In gastric cancer, DVL2 overexpression plays a crucial role in the occurrence and development of gastric cancer, so it may become a new, effective and complementary therapeutic target for gastric cancer.
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Affiliation(s)
- Ruofei He
- Department of Gastrointestinal Surgery, Affiliated Hospital of Nantong University, Medical school of Nantong University, Nantong 226001, China
| | - Yu Chen
- Department of Gastrointestinal Surgery, Affiliated Hospital of Nantong University, Medical school of Nantong University, Nantong 226001, China
| | - Chenyu Qian
- Department of Gastrointestinal Surgery, Affiliated Hospital of Nantong University, Medical school of Nantong University, Nantong 226001, China
| | - YiLin Hu
- Department of Gastrointestinal Surgery, Affiliated Hospital of Nantong University, Medical school of Nantong University, Nantong 226001, China
| | - Xinkun Huang
- Department of Gastrointestinal Surgery, Affiliated Hospital of Nantong University, Nantong 226001, China.
| | - Ran Tao
- Department of Gastrointestinal Surgery, Affiliated Hospital of Nantong University, Nantong 226001, China.
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5
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Li Z, Yang Z, Liu W, Zhu W, Yin L, Han Z, Xian Y, Wen J, Tang H, Lin X, Yang Y, Wang J, Zhang K. Disheveled3 enhanced EMT and cancer stem-like cells properties via Wnt/β-catenin/c-Myc/SOX2 pathway in colorectal cancer. J Transl Med 2023; 21:302. [PMID: 37147666 PMCID: PMC10161491 DOI: 10.1186/s12967-023-04120-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 04/09/2023] [Indexed: 05/07/2023] Open
Abstract
BACKGROUND Epithelial-to-mesenchymal transition (EMT) and cancer stem-like cells (CSLCs) play crucial role in tumor metastasis and drug-resistance. Disheveled3 (DVL3) is involved in malignant behaviors of cancer. However, the role and potential mechanism of DVL3 remain elusive in EMT and CSLCs of colorectal cancer (CRC). METHODS UALCAN and PrognoScan databases were employed to evaluate DVL3 expression in CRC tissues and its correlation with CRC prognosis, respectively. Transwell, sphere formation and CCK8 assay were used to assess metastasis, stemness and drug sensitivity of CRC cells, respectively. Western blotting and dual luciferase assay were performed to analyze the protein expression and Wnt/β-catenin activation, respectively. Lentiviral transfection was used to construct the stable cell lines. Animal studies were performed to analyze the effect of silencing DVL3 on tumorigenicity and metastasis of CRC cells in vivo. RESULTS DVL3 was overexpressed in CRC tissues and several CRC cell lines. DVL3 expression was also higher in CRC tissues with lymph node metastasis than tumor tissues without metastasis, and correlated with poor prognosis of CRC patients. DVL3 positively regulated the abilities of migration, invasion and EMT-like molecular changes in CRC cells. Moreover, DVL3 promoted CSLCs properties and multidrug resistance. We further identified that Wnt/β-catenin was crucial for DVL3-mediated EMT, stemness and SOX2 expression, while silencing SOX2 inhibited DVL3-mediated EMT and stemness. Furthermore, c-Myc, a direct target gene of Wnt/β-catenin, was required for SOX2 expression and strengthened EMT and stemness via SOX2 in CRC cells. Finally, knockdown of DVL3 suppressed tumorigenicity and lung metastasis of CRC cells in nude mice. CONCLUSION DVL3 promoted EMT and CSLCs properties of CRC via Wnt/β-catenin/c-Myc/SOX2 axis, providing a new strategy for successful CRC treatment.
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Affiliation(s)
- Zhengguang Li
- Oncology Department of Chengdu Seventh People's Hospital, Chengdu, China.
- School of Biological Sciences and Technology, Chengdu Medical College, Chengdu, 610500, China.
| | - Zhirong Yang
- Pathology Department of Deyang People's Hospital, Deyang, 618000, China
- School of Biological Sciences and Technology, Chengdu Medical College, Chengdu, 610500, China
| | - Wei Liu
- The Second Affiliated Hospital of Chengdu Medical College, China National Nuclear Corporation 416 Hospital, Chengdu, 61051, China
- School of Biological Sciences and Technology, Chengdu Medical College, Chengdu, 610500, China
| | - Wanglong Zhu
- School of Biological Sciences and Technology, Chengdu Medical College, Chengdu, 610500, China
| | - Lan Yin
- School of Biological Sciences and Technology, Chengdu Medical College, Chengdu, 610500, China
| | - Zhenyu Han
- School of Biological Sciences and Technology, Chengdu Medical College, Chengdu, 610500, China
| | - Yu Xian
- School of Biological Sciences and Technology, Chengdu Medical College, Chengdu, 610500, China
| | - Jie Wen
- School of Biological Sciences and Technology, Chengdu Medical College, Chengdu, 610500, China
| | - Hualong Tang
- School of Biological Sciences and Technology, Chengdu Medical College, Chengdu, 610500, China
| | - Xinyue Lin
- School of Biological Sciences and Technology, Chengdu Medical College, Chengdu, 610500, China
| | - Yuhan Yang
- School of Biological Sciences and Technology, Chengdu Medical College, Chengdu, 610500, China
| | - Jingyi Wang
- The Second Affiliated Hospital of Chengdu Medical College, China National Nuclear Corporation 416 Hospital, Chengdu, 61051, China.
- School of Biological Sciences and Technology, Chengdu Medical College, Chengdu, 610500, China.
| | - Kun Zhang
- The Second Affiliated Hospital of Chengdu Medical College, China National Nuclear Corporation 416 Hospital, Chengdu, 61051, China.
- School of Biological Sciences and Technology, Chengdu Medical College, Chengdu, 610500, China.
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6
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Kang K, Shi Q, Wang X, Chen YG. Dishevelled phase separation promotes Wnt signalosome assembly and destruction complex disassembly. J Cell Biol 2022; 221:213667. [PMID: 36342472 PMCID: PMC9811998 DOI: 10.1083/jcb.202205069] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 08/21/2022] [Accepted: 09/19/2022] [Indexed: 11/09/2022] Open
Abstract
The amplitude of Wnt/β-catenin signaling is precisely controlled by the assembly of the cell surface-localized Wnt receptor signalosome and the cytosolic β-catenin destruction complex. How these two distinct complexes are coordinately controlled remains largely unknown. Here, we demonstrated that the signalosome scaffold protein Dishevelled 2 (Dvl2) undergoes liquid-liquid phase separation (LLPS). Dvl2 LLPS is mediated by an intrinsically disordered region and facilitated by components of the signalosome, such as the receptor Fzd5. Assembly of the signalosome is initiated by rapid recruitment of Dvl2 to the membrane, followed by slow and dynamic recruitment of Axin1. Axin LLPS mediates assembly of the β-catenin destruction complex, and Dvl2 attenuates LLPS of Axin. Compared with the destruction complex, Axin partitions into the signalosome at a lower concentration and exhibits a higher mobility. Together, our results revealed that Dvl2 LLPS is crucial for controlling the assembly of the Wnt receptor signalosome and disruption of the phase-separated β-catenin destruction complex.
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Affiliation(s)
- Kexin Kang
- The State Key Laboratory of Membrane Biology, Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing, China
| | - Qiaoni Shi
- The State Key Laboratory of Membrane Biology, Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing, China
| | - Xu Wang
- Guangzhou Laboratory, Guangzhou, China
| | - Ye-Guang Chen
- The State Key Laboratory of Membrane Biology, Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing, China,Guangzhou Laboratory, Guangzhou, China,School of Basic Medicine, Nanchang University, Nanchang, China,Correspondence to Ye-Guang Chen:
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7
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Goncalves A, Antonetti DA. Transgenic animal models to explore and modulate the blood brain and blood retinal barriers of the CNS. Fluids Barriers CNS 2022; 19:86. [PMID: 36320068 PMCID: PMC9628113 DOI: 10.1186/s12987-022-00386-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 10/03/2022] [Indexed: 11/18/2022] Open
Abstract
The unique environment of the brain and retina is tightly regulated by blood-brain barrier and the blood-retinal barrier, respectively, to ensure proper neuronal function. Endothelial cells within these tissues possess distinct properties that allow for controlled passage of solutes and fluids. Pericytes, glia cells and neurons signal to endothelial cells (ECs) to form and maintain the barriers and control blood flow, helping to create the neurovascular unit. This barrier is lost in a wide range of diseases affecting the central nervous system (CNS) and retina such as brain tumors, stroke, dementia, and in the eye, diabetic retinopathy, retinal vein occlusions and age-related macular degeneration to name prominent examples. Recent studies directly link barrier changes to promotion of disease pathology and degradation of neuronal function. Understanding how these barriers form and how to restore these barriers in disease provides an important point for therapeutic intervention. This review aims to describe the fundamentals of the blood-tissue barriers of the CNS and how the use of transgenic animal models led to our current understanding of the molecular framework of these barriers. The review also highlights examples of targeting barrier properties to protect neuronal function in disease states.
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Affiliation(s)
- Andreia Goncalves
- Department of Ophthalmology and Visual Sciences, University of Michigan Kellogg Eye Center, 1000 Wall St Rm, Ann Arbor, MI, 7317, USA
| | - David A Antonetti
- Department of Ophthalmology and Visual Sciences, University of Michigan Kellogg Eye Center, 1000 Wall St Rm, Ann Arbor, MI, 7317, USA.
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8
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Boligala GP, Yang MV, van Wunnik JC, Pruitt K. Nuclear Dishevelled: An enigmatic role in governing cell fate and Wnt signaling. BIOCHIMICA ET BIOPHYSICA ACTA. MOLECULAR CELL RESEARCH 2022; 1869:119305. [PMID: 35688346 DOI: 10.1016/j.bbamcr.2022.119305] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 05/26/2022] [Accepted: 05/29/2022] [Indexed: 06/15/2023]
Abstract
The Dishevelled gene was first identified in Drosophila mutants with disoriented hair and bristle polarity and subsequent work has now demonstrated its importance in critical and diverse aspects of biology. Since those early discoveries, Dishevelled has been shown to coordinate a plethora of developmental and cellular processes that range from controlling cell polarity during gastrulation to partnering with chromatin modifying enzymes to regulate histone methylation at genomic loci. While the role of DVL in development is well-respected and the cytosolic function of DVL has been studied more extensively, its nuclear role continues to remain murky. In this review we highlight some of the seminal discoveries that have contributed to the field, but the primary focus is to discuss recent advances with respect to the nuclear role of Dishevelled. This nuclear function of Dishevelled is a dimension which is proving to be increasingly important yet remains enigmatic.
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Affiliation(s)
- Geetha Priya Boligala
- Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Mingxiao V Yang
- Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Jenna C van Wunnik
- Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Kevin Pruitt
- Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, TX, USA.
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9
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Wu S, Yin Y, Du L. FUS aggregation following ischemic stroke favors brain astrocyte activation through inducing excessive autophagy. Exp Neurol 2022; 355:114144. [PMID: 35718207 DOI: 10.1016/j.expneurol.2022.114144] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 05/25/2022] [Accepted: 06/13/2022] [Indexed: 11/04/2022]
Abstract
As is the case with neurodegenerative diseases, abnormal accumulation of aggregated proteins in neurons and glial are also known to implicate in the pathogenesis of ischemic stroke. However, the potential role of protein aggregates in brain ischemia remains largely unknown. Fused in Sarcoma (FUS) protein has a vital role in RNA metabolism and regulating cellular homeostasis. FUS pathology has been demonstrated in the formation of toxic aggregates and critically affecting cell viability in neurodegenerative diseases including amyotrophic lateral sclerosis (ALS) and frontotemporal dementia (FTD), but whether this also applies to neurological injury following cerebral ischemia is unclear. Herein, we demonstrated a critical role of aggregated FUS in astrocyte activation caused by cerebral ischemia and a possible underlying molecular mechanism. Cerebral ischemic injury significantly induced the formation of cytoplasmic FUS aggregates in reactive astrocytes and injured neurons, thereby aggravating neurofunctional damages and worsening stroke outcomes. Further analysis revealed that extranuclear aggregation of FUS in astrocytes was involved in the induction of excessive autophagy, which contributes to autophagic cell injury or death. In conclusion, our results reveal the important contribution of FUS aggregates in promoting astrocyte activation in stroke pathology independent of its transcriptional regulation activity. We thus propose that aggregation of FUS is an important pathological process in ischemic stroke and targeting FUS aggregates might be of unique therapeutic value in the development of future treatment strategies for ischemic stroke.
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Affiliation(s)
- Shusheng Wu
- Department of Immunology, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Yuye Yin
- Department of Immunology, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Longfei Du
- Department of Laboratory Medicine, Affiliated Hospital of Yangzhou University, Yangzhou, Jiangsu, China.
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10
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Yoon GH, Kim K, Park DS, Choi SC. RNF152 negatively regulates Wnt/β-catenin signaling in Xenopus embryos. BMB Rep 2022. [PMID: 35410636 PMCID: PMC9152578 DOI: 10.5483/bmbrep.2022.55.5.187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
The Wnt/β-catenin signaling plays crucial roles in early development, tissue homeostasis, stem cells, and cancers. Here, we show that RNF152, an E3 ligase localized to lysosomes, acts as a negative regulator of the Wnt/β-catenin pathway during Xenopus early embryogenesis. Overexpression of wild-type (WT) RNF152 inhibited XWnt8-induced stabilization of β-catenin, ectopic expression of target genes, and activity of a Wnt-responsive promoter. Likewise, an E3 ligase-defective RNF152 had repressive effects on the Wnt-dependent gene responses but not its truncation mutant lacking the transmembrane domain. Conversely, knockdown of RNF152 further enhanced the transcriptional responses induced by XWnt8. RNF152 morphants exhibited defects in craniofacial structures and pigmentation. In line with this, the gain-of-RNF152 function interfered with the expression of neural crest (NC) markers, whereas its depletion up-regulated NC formation in the early embryo. Mechanistically, RNF152 inhibits the polymerization of Dishevelled, which is key to Wnt signaling, in an E3 ligase-independent manner. Together, these results suggest that RNF152 controls negatively Wnt/β-catenin signaling to fine-tune its activity for NC formation in Xenopus embryo.
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Affiliation(s)
- Gang-Ho Yoon
- Department of Biomedical Sciences, University of Ulsan College of Medicine, Seoul 05505, Korea
| | - Kyuhee Kim
- Department of Biomedical Sciences, University of Ulsan College of Medicine, Seoul 05505, Korea
| | - Dong-Seok Park
- Department of Biomedical Sciences, University of Ulsan College of Medicine, Seoul 05505, Korea
| | - Sun-Cheol Choi
- Department of Biomedical Sciences, University of Ulsan College of Medicine, Seoul 05505, Korea
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11
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Dietrich B, Haider S, Meinhardt G, Pollheimer J, Knöfler M. WNT and NOTCH signaling in human trophoblast development and differentiation. Cell Mol Life Sci 2022; 79:292. [PMID: 35562545 PMCID: PMC9106601 DOI: 10.1007/s00018-022-04285-3] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 03/25/2022] [Accepted: 04/01/2022] [Indexed: 12/16/2022]
Abstract
Correct development of the human placenta and its differentiated epithelial cells, syncytial trophoblasts (STBs) and extravillous trophoblasts (EVTs), is crucial for a successful pregnancy outcome. STBs develop by cell fusion of mononuclear cytotrophoblasts (CTBs) in placental floating villi, whereas migratory EVTs originate from specialized villi anchoring to the maternal decidua. Defects in trophoblast differentiation have been associated with severe pregnancy disorders such as early-onset preeclampsia and fetal growth restriction. However, the evolutionary pathways underlying normal and adverse placentation are poorly understood. Herein, we discuss Wingless (WNT) and NOTCH signaling, two pathways that play pivotal roles in human placenta and trophoblast development. Whereas WNT is necessary for expansion of trophoblast progenitors and stem cells, NOTCH1 is required for proliferation and survival of EVT precursors. Differentiation of the latter is orchestrated by a switch in NOTCH receptor expression as well as by changes in WNT ligands and their downstream effectors.
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Affiliation(s)
- Bianca Dietrich
- grid.22937.3d0000 0000 9259 8492Placental Development Group, Department of Obstetrics and Gynaecology, Reproductive Biology Unit, Medical University of Vienna, Währinger Gürtel 18–20, 5Q, 1090 Vienna, Austria
| | - Sandra Haider
- grid.22937.3d0000 0000 9259 8492Placental Development Group, Department of Obstetrics and Gynaecology, Reproductive Biology Unit, Medical University of Vienna, Währinger Gürtel 18–20, 5Q, 1090 Vienna, Austria
| | - Gudrun Meinhardt
- grid.22937.3d0000 0000 9259 8492Placental Development Group, Department of Obstetrics and Gynaecology, Reproductive Biology Unit, Medical University of Vienna, Währinger Gürtel 18–20, 5Q, 1090 Vienna, Austria
| | - Jürgen Pollheimer
- grid.22937.3d0000 0000 9259 8492Maternal-Fetal Immunology Group, Department of Obstetrics and Gynaecology, Reproductive Biology Unit, Medical University of Vienna, Währinger Gürtel 18–20, 5Q, 1090 Vienna, Austria
| | - Martin Knöfler
- grid.22937.3d0000 0000 9259 8492Placental Development Group, Department of Obstetrics and Gynaecology, Reproductive Biology Unit, Medical University of Vienna, Währinger Gürtel 18–20, 5Q, 1090 Vienna, Austria
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