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Huang S, Yang Y, Ji B, Ullah U, Chaulagain RP, Tian Y, Qiu J, Gao F, Deng P, Chen H, Qi J, Cang X, Liu L, Jin S. Exploring extrahepatic metastasis of hepatocellular carcinoma based on methylation driver genes and establishing a prognostic model for hepatocellular carcinoma. Gene 2025; 933:148937. [PMID: 39265845 DOI: 10.1016/j.gene.2024.148937] [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: 05/04/2024] [Revised: 09/07/2024] [Accepted: 09/09/2024] [Indexed: 09/14/2024]
Abstract
BACKGROUND Hepatocellular carcinoma (HCC), theseventh most common cancer worldwide, is characterized by a high mortality rate, advanced diagnosis, and susceptibility to extrahepatic metastasis. Numerous studies have shown that DNA methylation is a crucial factor in epigenetic modifications and regulation of carcinogenesis. METHODS HCC patient data were sourced from the TCGA dataset as a training set, while GSE116174 was used as an external validation set for verification. Differential methylation and expression analyses were performed on HCC samples with and without extrahepatic metastasis. In the intersecting genes, the relationship between methylation and expression levels of the intersecting genes was analyzed. Genes with a correlation coefficient≥|0.30| and P<0.05 were identified as methylation driver genes. Cox regression analysis was conducted to identify genes associated with HCC prognosis and establish a risk score. Subsequently, a prognostic model was established and validated using Cox regression analysis incorporating the risk score and other clinical factors. Using immunohistochemistry to evaluate the expression of DHX58 and EIF5A2 in HCC tissues with and without extrahepatic metastasis. Immunoinfiltration analysis was performed on the HCC samples using CIBERSORT. RESULTS Our research identified eight methylation driver genes for HCC extrahepatic metastasis, of which two genes (DHX58 and EIF5A2) were associated with HCC patient prognosis. And the study further constructed and validated the risk score and prognostic model. Immunoinfiltration analysis showed that M0 macrophage abundance was correlated with the prognosis of HCC patients. Immunohistochemistry revealed differences in DHX58 and EIF5A2 expression between HCC tissues with and without extrahepatic metastasis, consistent with our bioinformatics findings.
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Affiliation(s)
- ShiLing Huang
- Department of Gastroenterology and Hepatology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province 150086, China
| | - Yang Yang
- Department of Graduation, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province 150086, China
| | - BoShu Ji
- Department of Pathology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province 150086, China
| | - Ubaid Ullah
- Department of Gastroenterology and Hepatology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province 150086, China
| | - Ram Prasad Chaulagain
- Department of Gastroenterology and Hepatology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province 150086, China
| | - YingYing Tian
- Department of Gastroenterology and Hepatology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province 150086, China
| | - JiaWei Qiu
- Department of Gastroenterology and Hepatology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province 150086, China
| | - FeiYang Gao
- Department of Gastroenterology and Hepatology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province 150086, China
| | - PengChao Deng
- Department of Gastroenterology and Hepatology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province 150086, China
| | - HongLiang Chen
- Department of Gastroenterology and Hepatology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province 150086, China
| | - JiHan Qi
- Department of Gastroenterology and Hepatology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province 150086, China
| | - XueYu Cang
- Department of Gastroenterology and Hepatology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province 150086, China
| | - LiNa Liu
- Department of Gastroenterology and Hepatology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province 150086, China
| | - ShiZhu Jin
- Department of Gastroenterology and Hepatology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province 150086, China.
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Latham ZD, Bermudez A, Hu JK, Lin NYC. Regulation of epithelial cell jamming transition by cytoskeleton and cell-cell interactions. BIOPHYSICS REVIEWS 2024; 5:041301. [PMID: 39416285 PMCID: PMC11479637 DOI: 10.1063/5.0220088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2024] [Accepted: 09/16/2024] [Indexed: 10/19/2024]
Abstract
Multicellular systems, such as epithelial cell collectives, undergo transitions similar to those in inert physical systems like sand piles and foams. To remodel or maintain tissue organization during development or disease, these collectives transition between fluid-like and solid-like states, undergoing jamming or unjamming transitions. While these transitions share principles with physical systems, understanding their regulation and implications in cell biology is challenging. Although cell jamming and unjamming follow physics principles described by the jamming diagram, they are fundamentally biological processes. In this review, we explore how cellular processes and interactions regulate jamming and unjamming transitions. We begin with an overview of how these transitions control tissue remodeling in epithelial model systems and describe recent findings of the physical principles governing tissue solidification and fluidization. We then explore the mechanistic pathways that modulate the jamming phase diagram axes, focusing on the regulation of cell fluctuations and geometric compatibility. Drawing upon seminal works in cell biology, we discuss the roles of cytoskeleton and cell-cell adhesion in controlling cell motility and geometry. This comprehensive view illustrates the molecular control of cell jamming and unjamming, crucial for tissue remodeling in various biological contexts.
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Affiliation(s)
- Zoe D. Latham
- Bioengineering Department, UCLA, Los Angeles, California 90095, USA
| | | | - Jimmy K. Hu
- Authors to whom correspondence should be addressed: and
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Hasan M, Sarker MN, Jabin T, Sarker S, Ahmed S, Abdullah-Al-Shoeb M, Hossain T. Pathogenic single nucleotide polymorphisms in RhoA gene: Insights into structural and functional impacts on RhoA-PLD1 interaction through molecular dynamics simulation. Curr Res Struct Biol 2024; 8:100159. [PMID: 39698059 PMCID: PMC11653153 DOI: 10.1016/j.crstbi.2024.100159] [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: 08/21/2024] [Revised: 11/03/2024] [Accepted: 11/27/2024] [Indexed: 12/20/2024] Open
Abstract
Molecular switches serve as key regulators of biological systems by acting as one of the crucial driving forces in the initiation of signal transduction pathway cascades. The Ras homolog gene family member A (RhoA) is one of the molecular switches that binds with GTP in order to cycle between an active GTP-bound state and an inactive GDP-bound state. Any aberrance in control over this circuit, particularly due to any perturbation in switching, leads to the development of different pathogenicity. Consequently, the single nucleotide polymorphisms (SNPs) within the RhoA gene, especially deleterious genetic variations, are crucial to study to forecast structural alteration and their functional impacts in light of disease onset. In this comprehensive study, we employed a range of computational tools to screen the deleterious SNPs of RhoA from 207 nonsynonymous SNPs (nsSNPs). By utilizing 7 distinct tools for further analysis, 8 common deleterious SNPs were sorted, among them 5 nsSNPs (V9G, G17E, E40K, A61T, F171L) were found to be in the highly conserved regions, with E40K and A61T at G2 and G3 motif of the GTP-binding domain respectively, indicating potential perturbation in GTP/GDP binding ability of the protein. RhoA-GDP complex interacts with the enzyme phospholipase, specifically PLD1, to regulate different cellular activities. PLD1 is also a crucial regulator of thrombosis and cancer. In that line of focus, our initial structural analysis of Y66H, A61T, G17E, I86N, and I151T mutations of RhoA revealed remarkable decreased hydrophobicity from which we further filtered out G17E and I86N which may have potential impact on the RhoA-GDP-PLD1 complex. Intriguingly, the comparative 250 ns (ns) molecular dynamics (MD) simulation of these two mutated complexes revealed overall structural instability and altered interaction patterns. Therefore, further investigation into these deleterious mutations with in vitro and in vivo studies could lead to the identification of potential biomarkers in terms of different pathogenesis and could also be utilized in personalized therapeutic targets in the long run.
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Affiliation(s)
| | | | | | - Saifuddin Sarker
- Department of Biochemistry and Molecular Biology, Shahjalal University of Science and Technology, Sylhet, 3114, Bangladesh
| | - Shamim Ahmed
- Department of Biochemistry and Molecular Biology, Shahjalal University of Science and Technology, Sylhet, 3114, Bangladesh
| | - Mohammad Abdullah-Al-Shoeb
- Department of Biochemistry and Molecular Biology, Shahjalal University of Science and Technology, Sylhet, 3114, Bangladesh
| | - Tanvir Hossain
- Department of Biochemistry and Molecular Biology, Shahjalal University of Science and Technology, Sylhet, 3114, Bangladesh
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Chen Z, Chen X, Zou Y, Zhou Y, Du J, Qin Y, Zou P, Zhang J, Zhu Y, Zhang Z, Wang Y. The immune function of TLR4-1 gene in Octopus sinensis revealed by RNAi and RNA-seq. FISH & SHELLFISH IMMUNOLOGY 2024; 154:109899. [PMID: 39265964 DOI: 10.1016/j.fsi.2024.109899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2024] [Revised: 08/29/2024] [Accepted: 09/09/2024] [Indexed: 09/14/2024]
Abstract
Toll-like receptors (TLRs) are a class of conserved pattern recognition receptors (PRRs) that are crucial for initiating the innate immune response and aiding in the clearance of pathogenic organisms. Many studies have identified TLR4 as a distinctive member of the TLR family, capable of activating both the Myeloid differentiation factor 88-dependent signaling pathway (MyD88-dependent) and the TIR-domain-containing adaptor inducing IFN-β dependent signaling pathway (TRIF-dependent). Nevertheless, the role of TLR4 in Cephalopoda is still largely unexplored. To elucidate the immune function of the OsTLR4-1 gene in Octopus sinensis, the OsTLR4-1 gene was first validated and analyzed in this study. The cDNA comprises a 2475 bp ORF region, encoding 824 amino acids. Evolutionary tree analysis indicated a high homology and a close phylogenetic relationship between the Octopus sinensis and other mollusks. RNA interference (RNAi) experiments demonstrated that the expression level of OsTLR4-1 gene and its protein in the lymphocytes of the RNAi group treated with OsTLR4-1 dsRNA was extremely significantly lower than that of the blank control group and negative control group (P < 0.01), and the expression of downstream genes of OsTLR4-1, including ligand MyD88, IRAK4, TRAF6, MKK6, Hsp90, COX2, TRAF3, and RIP1, were significantly down-regulated compared to the blank and negative control group (P < 0.01). Additionally, OsTLR4-1 expression in lymphocytes was highly significantly up-regulated in the LPS-treated group compared to the blank control group (P < 0.01), while its expression was extremely significantly lower in the LPS-treated group after OsTLR4-1 interference than in the blank control group (P < 0.01). The expression of its downstream effector genes Big Defensin (Big-Def) and histone H2A.V (H2A.V) was highly significantly up-regulated in lymphocytes in the LPS-treated group compared to the blank control group (P < 0.01), while their expression in the LPS-treated group after OsTLR4-1 interference was extremely significantly lower than that in the blank control group (P < 0.01). Through comparative transcriptome analysis of the RNAi group and the blank control group, it was found that differentially expressed genes were enriched in the Toll-like receptor signaling pathway, PI3K-AKT signaling pathway, P53 signaling pathway, MAPK signaling pathway, and NF-κB signaling pathway. qRT-PCR results of key genes in these pathways revealed a decrease in all genes except IκB and Jun2 genes. This study enhances our understanding of the immune function of the TLR gene family in O. sinensis and provides a foundation for further research into innate immune signaling pathways in cephalopods.
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Affiliation(s)
- Zebin Chen
- State Key Laboratory of Mariculture Breeding, Fisheries College, Jimei University, Xiamen, 361021, China; Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture and Rural Affairs, Fisheries College, Jimei University, Xiamen, 361021, China
| | - Xinxin Chen
- State Key Laboratory of Mariculture Breeding, Fisheries College, Jimei University, Xiamen, 361021, China; Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture and Rural Affairs, Fisheries College, Jimei University, Xiamen, 361021, China
| | - Yihua Zou
- State Key Laboratory of Mariculture Breeding, Fisheries College, Jimei University, Xiamen, 361021, China; Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture and Rural Affairs, Fisheries College, Jimei University, Xiamen, 361021, China
| | - Yuquan Zhou
- State Key Laboratory of Mariculture Breeding, Fisheries College, Jimei University, Xiamen, 361021, China; Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture and Rural Affairs, Fisheries College, Jimei University, Xiamen, 361021, China
| | - Jiahui Du
- State Key Laboratory of Mariculture Breeding, Fisheries College, Jimei University, Xiamen, 361021, China; Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture and Rural Affairs, Fisheries College, Jimei University, Xiamen, 361021, China
| | - Yongjie Qin
- State Key Laboratory of Mariculture Breeding, Fisheries College, Jimei University, Xiamen, 361021, China; Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture and Rural Affairs, Fisheries College, Jimei University, Xiamen, 361021, China
| | - Pengfei Zou
- State Key Laboratory of Mariculture Breeding, Fisheries College, Jimei University, Xiamen, 361021, China; Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture and Rural Affairs, Fisheries College, Jimei University, Xiamen, 361021, China
| | - Jianming Zhang
- Putian Municipal Institute of Fishery Science, Putian, 351100, China
| | - Youfang Zhu
- Putian Municipal Institute of Fishery Science, Putian, 351100, China
| | - Ziping Zhang
- College of Marine Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, China.
| | - Yilei Wang
- State Key Laboratory of Mariculture Breeding, Fisheries College, Jimei University, Xiamen, 361021, China; Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture and Rural Affairs, Fisheries College, Jimei University, Xiamen, 361021, China.
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Jung S, Cheong S, Lee Y, Lee J, Lee J, Kwon MS, Oh YS, Kim T, Ha S, Kim SJ, Jo DH, Ko J, Jeon NL. Integrating Vascular Phenotypic and Proteomic Analysis in an Open Microfluidic Platform. ACS NANO 2024; 18:24909-24928. [PMID: 39208278 PMCID: PMC11394367 DOI: 10.1021/acsnano.4c05537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/04/2024]
Abstract
This research introduces a vascular phenotypic and proteomic analysis (VPT) platform designed to perform high-throughput experiments on vascular development. The VPT platform utilizes an open-channel configuration that facilitates angiogenesis by precise alignment of endothelial cells, allowing for a 3D morphological examination and protein analysis. We study the effects of antiangiogenic agents─bevacizumab, ramucirumab, cabozantinib, regorafenib, wortmannin, chloroquine, and paclitaxel─on cytoskeletal integrity and angiogenic sprouting, observing an approximately 50% reduction in sprouting at higher drug concentrations. Precise LC-MS/MS analyses reveal global protein expression changes in response to four of these drugs, providing insights into the signaling pathways related to the cell cycle, cytoskeleton, cellular senescence, and angiogenesis. Our findings emphasize the intricate relationship between cytoskeletal alterations and angiogenic responses, underlining the significance of integrating morphological and proteomic data for a comprehensive understanding of angiogenesis. The VPT platform not only advances our understanding of drug impacts on vascular biology but also offers a versatile tool for analyzing proteome and morphological features across various models beyond blood vessels.
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Affiliation(s)
- Sangmin Jung
- Department of Mechanical Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Sunghun Cheong
- Interdisciplinary Program in Bioengineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Yoonho Lee
- Interdisciplinary Program in Bioengineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Jungseub Lee
- Department of Mechanical Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Jihye Lee
- Target Link Therapeutics, Inc., Seoul 04545, Republic of Korea
| | - Min-Seok Kwon
- Target Link Therapeutics, Inc., Seoul 04545, Republic of Korea
- Department of Public Health Science, Graduate School of Public Health, Seoul National University, Seoul 08826, Republic of Korea
| | - Young Sun Oh
- Department of Mechanical Engineering, Seoul National University, Seoul 08826, Republic of Korea
- Target Link Therapeutics, Inc., Seoul 04545, Republic of Korea
| | - Taewan Kim
- Department of Electrical and Computer Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Sungjae Ha
- ProvaLabs, Inc., Seoul 08826, Republic of Korea
| | - Sung Jae Kim
- Department of Electrical and Computer Engineering, Seoul National University, Seoul 08826, Republic of Korea
- SOFT Foundry, Seoul National University, Seoul 08826, Republic of Korea
- Inter-university Semiconductor Research Center, Seoul National University, Seoul 08826, Republic of Korea
| | - Dong Hyun Jo
- Department of Anatomy and Cell Biology, Seoul National University College of Medicine, Seoul 03080, Republic of Korea
| | - Jihoon Ko
- Department of BioNano Technology, Gachon University, Seongnam-si, Gyeonggi-do 13120, Republic of Korea
| | - Noo Li Jeon
- Department of Mechanical Engineering, Seoul National University, Seoul 08826, Republic of Korea
- Interdisciplinary Program in Bioengineering, Seoul National University, Seoul 08826, Republic of Korea
- Institute of Advanced Machines and Design, Seoul National University, Seoul 08826, Republic of Korea
- Qureator, Inc., San Diego, California 92121, United States
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6
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Liu Z, Hou P, Fang J, Shao C, Shi Y, Melino G, Peschiaroli A. Hyaluronic acid metabolism and chemotherapy resistance: recent advances and therapeutic potential. Mol Oncol 2024; 18:2087-2106. [PMID: 37953485 PMCID: PMC11467803 DOI: 10.1002/1878-0261.13551] [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: 08/03/2023] [Revised: 10/04/2023] [Accepted: 11/10/2023] [Indexed: 11/14/2023] Open
Abstract
Hyaluronic acid (HA) is a major component of the extracellular matrix, providing essential mechanical scaffolding for cells and, at the same time, mediating essential biochemical signals required for tissue homeostasis. Many solid tumors are characterized by dysregulated HA metabolism, resulting in increased HA levels in cancer tissues. HA interacts with several cell surface receptors, such as cluster of differentiation 44 and receptor for hyaluronan-mediated motility, thus co-regulating important signaling pathways in cancer development and progression. In this review, we describe the enzymes controlling HA metabolism and its intracellular effectors emphasizing their impact on cancer chemotherapy resistance. We will also explore the current and future prospects of HA-based therapy, highlighting the opportunities and challenges in the field.
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Affiliation(s)
- Zhanhong Liu
- Department of Experimental MedicineUniversity of Rome Tor VergataRomeItaly
- Institutes for Translational Medicine, State Key Laboratory of Radiation Medicine and ProtectionThe First Affiliated Hospital of Soochow University, Suzhou Medical College of Soochow UniversityChina
| | - Pengbo Hou
- Department of Experimental MedicineUniversity of Rome Tor VergataRomeItaly
- Institutes for Translational Medicine, State Key Laboratory of Radiation Medicine and ProtectionThe First Affiliated Hospital of Soochow University, Suzhou Medical College of Soochow UniversityChina
| | - Jiankai Fang
- Institutes for Translational Medicine, State Key Laboratory of Radiation Medicine and ProtectionThe First Affiliated Hospital of Soochow University, Suzhou Medical College of Soochow UniversityChina
| | - Changshun Shao
- Institutes for Translational Medicine, State Key Laboratory of Radiation Medicine and ProtectionThe First Affiliated Hospital of Soochow University, Suzhou Medical College of Soochow UniversityChina
| | - Yufang Shi
- Institutes for Translational Medicine, State Key Laboratory of Radiation Medicine and ProtectionThe First Affiliated Hospital of Soochow University, Suzhou Medical College of Soochow UniversityChina
| | - Gerry Melino
- Department of Experimental MedicineUniversity of Rome Tor VergataRomeItaly
| | - Angelo Peschiaroli
- Institute of Translational Pharmacology (IFT), National Research Council (CNR)RomeItaly
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Levy E, Fallet-Bianco C, Auclair N, Patey N, Marcil V, Sané AT, Spahis S. Unraveling Chylomicron Retention Disease Enhances Insight into SAR1B GTPase Functions and Mechanisms of Actions, While Shedding Light of Intracellular Chylomicron Trafficking. Biomedicines 2024; 12:1548. [PMID: 39062121 PMCID: PMC11274388 DOI: 10.3390/biomedicines12071548] [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: 05/22/2024] [Revised: 06/28/2024] [Accepted: 07/08/2024] [Indexed: 07/28/2024] Open
Abstract
Over the past three decades, significant efforts have been focused on unraveling congenital intestinal disorders that disrupt the absorption of dietary lipids and fat-soluble vitamins. The primary goal has been to gain deeper insights into intra-enterocyte sites, molecular steps, and crucial proteins/regulatory pathways involved, while simultaneously identifying novel therapeutic targets and diagnostic tools. This research not only delves into specific and rare malabsorptive conditions, such as chylomicron retention disease (CRD), but also contributes to our understanding of normal physiology through the utilization of cutting-edge cellular and animal models alongside advanced research methodologies. This review elucidates how modern techniques have facilitated the decoding of CRD gene defects, the identification of dysfunctional cellular processes, disease regulatory mechanisms, and the essential role of coat protein complex II-coated vesicles and cargo receptors in chylomicron trafficking and endoplasmic reticulum (ER) exit sites. Moreover, experimental approaches have shed light on the multifaceted functions of SAR1B GTPase, wherein loss-of-function mutations not only predispose individuals to CRD but also exacerbate oxidative stress, inflammation, and ER stress, potentially contributing to clinical complications associated with CRD. In addition to dissecting the primary disease pathology, genetically modified animal models have emerged as invaluable assets in exploring various ancillary aspects, including responses to environmental challenges such as dietary alterations, gender-specific disparities in disease onset and progression, and embryonic lethality or developmental abnormalities. In summary, this comprehensive review provides an in-depth and contemporary analysis of CRD, offering a meticulous examination of the CRD current landscape by synthesizing the latest research findings and advancements in the field.
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Affiliation(s)
- Emile Levy
- Azrieli Research Center, CHU Ste-Justine and Department of Nutrition, Université de Montréal, Montreal, QC H3T 1C5, Canada
| | - Catherine Fallet-Bianco
- Azrieli Research Center, CHU Ste-Justine and Pathology & Cell Biology, Université de Montréal, Montreal, QC H3T 1C5, Canada
| | - Nickolas Auclair
- Azrieli Research Center, CHU Ste-Justine and Pharmacology, Université de Montréal, Montreal, QC H3T 1C5, Canada
| | - Natalie Patey
- Azrieli Research Center, CHU Ste-Justine and Pathology & Cell Biology, Université de Montréal, Montreal, QC H3T 1C5, Canada
| | - Valérie Marcil
- Azrieli Research Center, CHU Ste-Justine and Department of Nutrition, Université de Montréal, Montreal, QC H3T 1C5, Canada
| | | | - Schohraya Spahis
- Azrieli Research Center, CHU Ste-Justine and Biochemistry & Molecular Medicine, Université de Montréal, Montreal, QC H3T 1C5, Canada;
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Pukkanasut P, Jaskula-Sztul R, Gomora JC, Velu SE. Therapeutic targeting of voltage-gated sodium channel Na V1.7 for cancer metastasis. Front Pharmacol 2024; 15:1416705. [PMID: 39045054 PMCID: PMC11263763 DOI: 10.3389/fphar.2024.1416705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Accepted: 06/12/2024] [Indexed: 07/25/2024] Open
Abstract
This review focuses on the expression and function of voltage-gated sodium channel subtype NaV1.7 in various cancers and explores its impact on the metastasis driving cell functions such as proliferation, migration, and invasiveness. An overview of its structural characteristics, drug binding sites, inhibitors and their likely mechanisms of action are presented. Despite the lack of clarity on the precise mechanism by which NaV1.7 contributes to cancer progression and metastasis; many studies have suggested a connection between NaV1.7 and proteins involved in multiple signaling pathways such as PKA and EGF/EGFR-ERK1/2. Moreover, the functional activity of NaV1.7 appears to elevate the expression levels of MACC1 and NHE-1, which are controlled by p38 MAPK activity, HGF/c-MET signaling and c-Jun activity. This cascade potentially enhances the secretion of extracellular matrix proteases, such as MMPs which play critical roles in cell migration and invasion activities. Furthermore, the NaV1.7 activity may indirectly upregulate Rho GTPases Rac activity, which is critical for cytoskeleton reorganization, cell adhesion, and actin polymerization. The relationship between NaV1.7 and cancer progression has prompted researchers to investigate the therapeutic potential of targeting NaV1.7 using inhibitors. The positive outcome of such studies resulted in the discovery of several inhibitors with the ability to reduce cancer cell migration, invasion, and tumor growth underscoring the significance of NaV1.7 as a promising pharmacological target for attenuating cancer cell proliferation and metastasis. The research findings summarized in this review suggest that the regulation of NaV1.7 expression and function by small molecules and/or by genetic engineering is a viable approach to discover novel therapeutics for the prevention and treatment of metastasis of cancers with elevated NaV1.7 expression.
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Affiliation(s)
- Piyasuda Pukkanasut
- Department of Chemistry, The University of Alabama at Birmingham, Birmingham, AL, United States
| | - Renata Jaskula-Sztul
- Department of Surgery, The University of Alabama at Birmingham, Birmingham, AL, United States
- O’Neal Comprehensive Cancer Center, The University of Alabama at Birmingham, Birmingham, AL, United States
| | - Juan Carlos Gomora
- Departamento de Neuropatología Molecular, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Sadanandan E. Velu
- Department of Chemistry, The University of Alabama at Birmingham, Birmingham, AL, United States
- O’Neal Comprehensive Cancer Center, The University of Alabama at Birmingham, Birmingham, AL, United States
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Singh N, Zhang P, Li KJ, Gordon KL. The Rac pathway prevents cell fragmentation in a nonprotrusively migrating leader cell during C. elegans gonad organogenesis. Curr Biol 2024; 34:2387-2402.e5. [PMID: 38776905 DOI: 10.1016/j.cub.2024.04.073] [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: 11/14/2023] [Revised: 03/22/2024] [Accepted: 04/29/2024] [Indexed: 05/25/2024]
Abstract
The C. elegans hermaphrodite distal tip cell (DTC) leads gonadogenesis. Loss-of-function mutations in a C. elegans ortholog of the Rac1 GTPase (ced-10) and its GEF complex (ced-5/DOCK180, ced-2/CrkII, ced-12/ELMO) cause gonad migration defects related to directional sensing; we discovered an additional defect class of gonad bifurcation in these mutants. Using genetic approaches, tissue-specific and whole-body RNAi, and in vivo imaging of endogenously tagged proteins and marked cells, we find that loss of Rac1 or its regulators causes the DTC to fragment as it migrates. Both products of fragmentation-the now-smaller DTC and the membranous patch of cellular material-localize important stem cell niche signaling (LAG-2 ligand) and migration (INA-1/integrin subunit alpha) factors to their membranes, but only one retains the DTC nucleus and therefore the ability to maintain gene expression over time. The enucleate patch can lead a bifurcating branch off the gonad arm that grows through germ cell proliferation. Germ cells in this branch differentiate as the patch loses LAG-2 expression. While the nucleus is surprisingly dispensable for aspects of leader cell function, it is required for stem cell niche activity long term. Prior work found that Rac1-/-;Rac2-/- mouse erythrocytes fragment; in this context, our new findings support the conclusion that maintaining a cohesive but deformable cell is a conserved function of this important cytoskeletal regulator.
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Affiliation(s)
- Noor Singh
- Department of Biology, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Pu Zhang
- Department of Biology, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Karen Jian Li
- Department of Biology, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Kacy Lynn Gordon
- Department of Biology, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.
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10
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Yu P, Hu C, Ding G, Shi X, Xu J, Cao Y, Chen X, Wu W, Xu Q, Fang J, Huang X, Yuan S, Chen H, Wang Z, Huang L, Pang F, Du Y, Cheng X. Mutation characteristics and molecular evolution of ovarian metastasis from gastric cancer and potential biomarkers for paclitaxel treatment. Nat Commun 2024; 15:3771. [PMID: 38704377 PMCID: PMC11069556 DOI: 10.1038/s41467-024-48144-0] [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: 02/27/2023] [Accepted: 04/19/2024] [Indexed: 05/06/2024] Open
Abstract
Ovarian metastasis is one of the major causes of treatment failure in patients with gastric cancer (GC). However, the genomic characteristics of ovarian metastasis in GC remain poorly understood. In this study, we enroll 74 GC patients with ovarian metastasis, with 64 having matched primary and metastatic samples. Here, we show a characterization of the mutation landscape of this disease, alongside an investigation into the molecular heterogeneity and pathway mutation enrichments between synchronous and metachronous metastasis. We classify patients into distinct clonal evolution patterns based on the distribution of mutations in paired samples. Notably, the parallel evolution group exhibits the most favorable prognosis. Additionally, by analyzing the differential response to chemotherapy, we identify potential biomarkers, including SALL4, CCDC105, and CLDN18, for predicting the efficacy of paclitaxel treatment. Furthermore, we validate that CLDN18 fusion mutations improve tumor response to paclitaxel treatment in GC with ovarian metastasis in vitro and vivo.
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Affiliation(s)
- Pengfei Yu
- Department of Gastric Surgery, Zhejiang Cancer Hospital, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang, China
| | - Can Hu
- Department of Gastric Surgery, Zhejiang Cancer Hospital, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang, China
| | - Guangyu Ding
- Department of Gastric Surgery, Zhejiang Cancer Hospital, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang, China
| | | | - Jingli Xu
- Department of Gastric Surgery, Zhejiang Cancer Hospital, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang, China
| | - Yang Cao
- Department of Gastric Surgery, Zhejiang Cancer Hospital, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang, China
| | - Xiangliu Chen
- Department of Gastric Surgery, Zhejiang Cancer Hospital, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang, China
| | - Wei Wu
- Department of Pathology, Zhejiang Cancer Hospital, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang, China
| | - Qi Xu
- Department of Oncology, Zhejiang Cancer Hospital, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang, China
| | - Jingquan Fang
- Department of Gastric Surgery, Zhejiang Cancer Hospital, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang, China
| | - Xingmao Huang
- Department of Gastric Surgery, Zhejiang Cancer Hospital, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang, China
| | | | - Hui Chen
- Shanghai OrigiMed Co., Ltd, Shanghai, PR China
| | | | - Ling Huang
- Department of Gastric Surgery, Zhejiang Cancer Hospital, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang, China
| | - Fei Pang
- Shanghai OrigiMed Co., Ltd, Shanghai, PR China
| | - Yian Du
- Department of Gastric Surgery, Zhejiang Cancer Hospital, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang, China
| | - Xiangdong Cheng
- Department of Gastric Surgery, Zhejiang Cancer Hospital, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang, China.
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11
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Crossley RM, Johnson S, Tsingos E, Bell Z, Berardi M, Botticelli M, Braat QJS, Metzcar J, Ruscone M, Yin Y, Shuttleworth R. Modeling the extracellular matrix in cell migration and morphogenesis: a guide for the curious biologist. Front Cell Dev Biol 2024; 12:1354132. [PMID: 38495620 PMCID: PMC10940354 DOI: 10.3389/fcell.2024.1354132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Accepted: 02/12/2024] [Indexed: 03/19/2024] Open
Abstract
The extracellular matrix (ECM) is a highly complex structure through which biochemical and mechanical signals are transmitted. In processes of cell migration, the ECM also acts as a scaffold, providing structural support to cells as well as points of potential attachment. Although the ECM is a well-studied structure, its role in many biological processes remains difficult to investigate comprehensively due to its complexity and structural variation within an organism. In tandem with experiments, mathematical models are helpful in refining and testing hypotheses, generating predictions, and exploring conditions outside the scope of experiments. Such models can be combined and calibrated with in vivo and in vitro data to identify critical cell-ECM interactions that drive developmental and homeostatic processes, or the progression of diseases. In this review, we focus on mathematical and computational models of the ECM in processes such as cell migration including cancer metastasis, and in tissue structure and morphogenesis. By highlighting the predictive power of these models, we aim to help bridge the gap between experimental and computational approaches to studying the ECM and to provide guidance on selecting an appropriate model framework to complement corresponding experimental studies.
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Affiliation(s)
- Rebecca M. Crossley
- Wolfson Centre for Mathematical Biology, Mathematical Institute, University of Oxford, Oxford, United Kingdom
| | - Samuel Johnson
- Wolfson Centre for Mathematical Biology, Mathematical Institute, University of Oxford, Oxford, United Kingdom
| | - Erika Tsingos
- Computational Developmental Biology Group, Institute of Biodynamics and Biocomplexity, Utrecht University, Utrecht, Netherlands
| | - Zoe Bell
- Northern Institute for Cancer Research, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Massimiliano Berardi
- LaserLab, Department of Physics and Astronomy, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
- Optics11 life, Amsterdam, Netherlands
| | | | - Quirine J. S. Braat
- Department of Applied Physics and Science Education, Eindhoven University of Technology, Eindhoven, Netherlands
| | - John Metzcar
- Department of Intelligent Systems Engineering, Indiana University, Bloomington, IN, United States
- Department of Informatics, Indiana University, Bloomington, IN, United States
| | | | - Yuan Yin
- Wolfson Centre for Mathematical Biology, Mathematical Institute, University of Oxford, Oxford, United Kingdom
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12
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Chen Y, Huang M, Lu J, Zhang Q, Wu J, Peng S, Chen S, Zhang Y, Cheng L, Lin T, Chen X, Huang J. Establishment of a prognostic model to predict chemotherapy response and identification of RAC3 as a chemotherapeutic target in bladder cancer. ENVIRONMENTAL TOXICOLOGY 2024; 39:509-528. [PMID: 37310098 DOI: 10.1002/tox.23860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 05/17/2023] [Accepted: 05/28/2023] [Indexed: 06/14/2023]
Abstract
Cisplatin-based chemotherapy is considered the primary treatment option for patients with advanced bladder cancer (BCa). However, the objective response rate to chemotherapy is often unsatisfactory, leading to a poor 5-year survival rate. Furthermore, current strategies for evaluating chemotherapy response and prognosis are limited and inefficient. In this study, we aimed to address these challenges by establishing a chemotherapy response type gene (CRTG) signature consisting of 9 genes and verified the prognostic value of this signature using TCGA and GEO BCa cohorts. The risk scores based on the CRTG signature were found to be associated with advanced clinicopathological status and demonstrated favorable predictive power for chemotherapy response in the TCGA cohort. Meanwhile, tumors with high risk scores exhibited a tendency toward a "cold tumor" phenotype. These tumors showed a low abundance of T cells, CD8+ T cells and cytotoxic lymphocytes, along with a high abundance of cancer-associated fibroblasts. Moreover, they displayed higher mRNA levels of these immune checkpoints: CD200, CD276, CD44, NRP1, PDCD1LG2 (PD-L2), and TNFSF9. Furthermore, we developed a nomogram that integrated the CRTG signature with clinicopathologic risk factors. This nomogram proved to be a more effective tool for predicting the prognosis of BCa patients. Additionally, we identified Rac family small GTPase 3 (RAC3) as a biomarker in our model. RAC3 was found to be overexpressed in chemoresistant BCa tissues and enhance the chemotherapeutic resistance of BCa cells in vitro and in vivo by regulating the PAK1-ERK1/2 pathway. In conclusion, our study presents a novel CRTG model for predicting chemotherapy response and prognosis in BCa. We also highlight the potential of combining chemotherapy with immunotherapy as a promising strategy for chemoresistant BCa and that RAC3 might be a latent target for therapeutic intervention.
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Affiliation(s)
- Yuelong Chen
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, PR China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, PR China
- Department of Urology, The First Affiliated Hospital of Kunming Medical University, Kunming, PR China
| | - Ming Huang
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, PR China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, PR China
| | - Junlin Lu
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, PR China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, PR China
| | - Qiang Zhang
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, PR China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, PR China
| | - Jilin Wu
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, PR China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, PR China
| | - Shengmeng Peng
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, PR China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, PR China
| | - Siting Chen
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, PR China
| | - Yangjie Zhang
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, PR China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, PR China
| | - Liang Cheng
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, PR China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, PR China
| | - Tianxin Lin
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, PR China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, PR China
- Guangdong Provincial Clinical Research Center for Urological Diseases, Guangzhou, PR China
| | - Xu Chen
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, PR China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, PR China
- Guangdong Provincial Clinical Research Center for Urological Diseases, Guangzhou, PR China
| | - Jian Huang
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, PR China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, PR China
- Guangdong Provincial Clinical Research Center for Urological Diseases, Guangzhou, PR China
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13
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Hussein MA, Valinezhad K, Adel E, Munirathinam G. MALAT-1 Is a Key Regulator of Epithelial-Mesenchymal Transition in Cancer: A Potential Therapeutic Target for Metastasis. Cancers (Basel) 2024; 16:234. [PMID: 38201661 PMCID: PMC10778055 DOI: 10.3390/cancers16010234] [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: 12/12/2023] [Revised: 12/29/2023] [Accepted: 01/01/2024] [Indexed: 01/12/2024] Open
Abstract
Metastasis-associated lung adenocarcinoma transcript-1 (MALAT-1) is a long intergenic non-coding RNA (lncRNA) located on chr11q13. It is overexpressed in several cancers and controls gene expression through chromatin modification, transcriptional regulation, and post-transcriptional regulation. Importantly, MALAT-1 stimulates cell proliferation, migration, and metastasis and serves a vital role in driving the epithelial-to-mesenchymal transition (EMT), subsequently acquiring cancer stem cell-like properties and developing drug resistance. MALAT-1 modulates EMT by interacting with various intracellular signaling pathways, notably the phosphoinositide 3-kinase (PI3K)/Akt and Wnt/β-catenin pathways. It also behaves like a sponge for microRNAs, preventing their interaction with target genes and promoting EMT. In addition, we have used bioinformatics online tools to highlight the disparities in the expression of MALAT-1 between normal and cancer samples using data from The Cancer Genome Atlas (TCGA). Furthermore, the intricate interplay of MALAT-1 with several essential targets of cancer progression and metastasis renders it a good candidate for therapeutic interventions. Several innovative approaches have been exploited to target MALAT-1, such as short hairpin RNAs (shRNAs), antisense oligonucleotides (ASOs), and natural products. This review emphasizes the interplay between MALAT-1 and EMT in modulating cancer metastasis, stemness, and chemoresistance in different cancers.
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Affiliation(s)
- Mohamed Ali Hussein
- Department of Pharmaceutical Services, Children’s Cancer Hospital Egypt, Cairo 57357, Egypt;
- Department of Biology, School of Sciences and Engineering, American University in Cairo, New Cairo 11835, Egypt;
| | - Kamyab Valinezhad
- Department of Biomedical Sciences, College of Medicine, University of Illinois, Rockford, IL 61107, USA;
| | - Eman Adel
- Department of Biology, School of Sciences and Engineering, American University in Cairo, New Cairo 11835, Egypt;
| | - Gnanasekar Munirathinam
- Department of Biomedical Sciences, College of Medicine, University of Illinois, Rockford, IL 61107, USA;
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14
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Singh N, Jian Li K, Lynn Gordon K. Getting there in one piece: The Rac pathway prevents cell fragmentation in a nonprotrusively migrating leader cell during organogenesis. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.12.01.569642. [PMID: 38106045 PMCID: PMC10723291 DOI: 10.1101/2023.12.01.569642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2023]
Abstract
The C. elegans hermaphrodite distal tip cell (DTC) leads gonadogenesis. Loss-of-function mutations in a C. elegans ortholog of the Rac1 GTPase (ced-10) and its GEF complex (ced-5/DOCK180, ced-2/CrkII, ced-12/ELMO) cause gonad migration defects related to directional sensing; we discovered an additional defect class of gonad bifurcation in these mutants. Using genetic approaches, tissue-specific and whole-body RNAi, and in vivo imaging of endogenously tagged proteins and marked cells, we find that loss of Rac1 or its regulators causes the DTC to fragment as it migrates. Both products of fragmentation-the now-smaller DTC and the membranous patch of cellular material-localize important stem cell niche signaling (LAG-2/DSL ligand) and migration (INA-1/integrin subunit alpha) factors to their membranes, but only one retains the DTC nucleus and therefore the ability to maintain gene expression over time. The enucleate patch can lead a bifurcating branch off the gonad arm that grows through germ cell proliferation. Germ cells in this branch differentiate as the patch loses LAG-2 expression. While the nucleus is surprisingly dispensable for aspects of leader cell function, it is required for stem cell niche activity long-term. Prior work found that Rac1-/-;Rac2-/- mouse erythrocytes fragment; in this context, our new findings support the conclusion that maintaining a cohesive but deformable cell is a conserved function of this important cytoskeletal regulator.
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Affiliation(s)
- Noor Singh
- Department of Biology, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599
| | - Karen Jian Li
- Department of Biology, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599
| | - Kacy Lynn Gordon
- Department of Biology, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599
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15
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Sofroniou MM, Lemmon CA. Differential regulation of fibronectin expression and fibrillogenesis by autocrine TGF-β1 signaling in malignant and benign mammary epithelial cells. Int J Biochem Cell Biol 2023; 165:106478. [PMID: 37866655 PMCID: PMC10775780 DOI: 10.1016/j.biocel.2023.106478] [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: 07/03/2023] [Revised: 10/02/2023] [Accepted: 10/17/2023] [Indexed: 10/24/2023]
Abstract
Remodeling of the extracellular matrix (ECM) is a key hallmark of cancer progression. A critical component of ECM remodeling is the assembly of the glycoprotein fibronectin (FN) into insoluble fibrils, which provide a scaffold for invading vascular endothelial cells and escaping cancer cells, as well as a framework for collagen deposition and oncogenic cytokine tethering. FN fibril assembly is induced by Transforming Growth Factor-β1 (TGF-β1), which was originally identified for its role in malignant transformation. Addition of exogenous TGF-β1 drives FN fibril assembly while also upregulating endogenous TGF-β1 expression and autocrine signaling. In the current study, we sought to determine if autocrine TGF-β1 signaling plays a role in FN fibril formation in either MCF10A mammary epithelial cells, which behave similarly to healthy epithelia, or malignant MDA- MB-231 breast cancer cells. Our results show two interesting findings: first, malignant MDA-MB- 231 cells assemble less FN into fibrils, despite expressing and secreting more soluble FN; second, autocrine TGF-β1 signaling is required for FN fibril formation in MCF10A epithelial cells, even in the presence of exogenous, active TGF-β1. This suggests that autocrine TGF-β1 is signaling through distinct pathways from active exogenous TGF-β1. We hypothesized that this signaling was mediated by interactions between the TGF-β1 latency associated peptide (LAP) and αv integrins; indeed, incubating MCF10As with soluble LAP, even in the absence of the active TGF-β1 ligand, partially recovered FN fibril assembly. Taken together, these data suggests that autocrine TGF-β1 plays a critical role in FN fibril assembly, and this interaction is mediated by LAP-integrin signaling.
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Affiliation(s)
- Michael M Sofroniou
- Department of Biomedical Engineering, Virginia Commonwealth University, 410 West Main St., Richmond, VA 23284, USA
| | - Christopher A Lemmon
- Department of Biomedical Engineering, Virginia Commonwealth University, 410 West Main St., Richmond, VA 23284, USA.
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16
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Pimenta FM, Huh J, Guzman B, Amanah D, Marston DJ, Pinkin NK, Danuser G, Hahn KM. Rho MultiBinder, a fluorescent biosensor that reports the activity of multiple GTPases. Biophys J 2023; 122:3646-3655. [PMID: 37085995 PMCID: PMC10541480 DOI: 10.1016/j.bpj.2023.04.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 02/28/2023] [Accepted: 04/17/2023] [Indexed: 04/23/2023] Open
Abstract
Imaging two or more fluorescent biosensors in the same living cell can reveal the spatiotemporal coordination of protein activities. However, using multiple Förster resonance energy transfer (FRET) biosensors together is challenging due to toxicity and the need for orthogonal fluorophores. Here we generate a biosensor component that binds selectively to the activated conformation of three different proteins. This enabled multiplexed FRET with fewer fluorophores, and reduced toxicity. We generated this MultiBinder (MB) reagent for the GTPases RhoA, Rac1, and Cdc42 by combining portions of the downstream effector proteins Pak1 and Rhotekin. Using FRET between mCherry on the MB and YPet or mAmetrine on two target proteins, the activities of any pair of GTPases could be distinguished. The MB was used to image Rac1 and RhoA together with a third, dye-based biosensor for Cdc42. Quantifying effects of biosensor combinations on the frequency, duration, and velocity of cell protrusions and retractions demonstrated reduced toxicity. Multiplexed imaging revealed signaling hierarchies between the three proteins at the cell edge where they regulate motility.
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Affiliation(s)
- Frederico M Pimenta
- Department of Pharmacology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Jaewon Huh
- Departments of Bioinformatics and Cell Biology, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Bryan Guzman
- Department of Pharmacology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Diepreye Amanah
- Department of Pharmacology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Daniel J Marston
- Department of Pharmacology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Nicholas K Pinkin
- Department of Pharmacology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Gaudenz Danuser
- Departments of Bioinformatics and Cell Biology, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Klaus M Hahn
- Department of Pharmacology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
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17
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Zhang Y, Kitagawa T, Furutani-Seiki M, Yoshimura SH. Yes-associated protein regulates cortical actin architecture and dynamics through intracellular translocation of Rho GTPase-activating protein 18. FASEB J 2023; 37:e23161. [PMID: 37638562 DOI: 10.1096/fj.202201992r] [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: 11/28/2022] [Revised: 07/07/2023] [Accepted: 08/11/2023] [Indexed: 08/29/2023]
Abstract
Yes-associated protein (YAP) is a transcriptional co-activator that controls the transcription of target genes and modulates the structures of various cytoskeletal architecture as mechanical responses. Although it has been known that YAP regulates actin-regulatory proteins, the detailed molecular mechanism of how they control and coordinate intracellular actin architecture remains elusive. Herein, we aimed to examine the structure and dynamics of intracellular actin architecture from molecular to cellular scales in normal and YAP-knockout (YAP-KO) cells utilizing high-speed atomic force microscopy (HS-AFM) for live-cell imaging and other microscope-based mechanical manipulation and measurement techniques. YAP-KO Madin-Darby canine kidney cells had a higher density and turnover of actin filaments in the cell cortex and a higher elastic modulus. Laser aberration assay demonstrated that YAP-KO cells were more resistant to damage than normal cells. We also found that Rho GTPase-activating protein 18 (ARHGAP18), a downstream factor of YAP, translocated from the cortex to the edge of sparsely cultured YAP-KO cells. It resulted in high RhoA activity and promotion of actin polymerization in the cell cortex and their reductions at the edge. HS-AFM imaging of live cell edge and a cell-migration assay demonstrated lower membrane dynamics and motility of YAP-KO cells than those of normal cells, suggesting lower actin dynamics at the edge. Together, these results demonstrate that a YAP-dependent pathway changes the intracellular distribution of RhoGAP and modulates actin dynamics in different parts of the cell, providing a mechanistic insight into how a mechano-sensitive transcription cofactor regulates multiple intracellular actin architecture and coordinates mechano-responses.
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Affiliation(s)
- Yanshu Zhang
- Graduate School of Biostudies, Kyoto University, Kyoto, Japan
| | - Takao Kitagawa
- Graduate School of Medicine, Yamaguchi University, Yamaguchi, Japan
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18
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Zheng X, Zhao X, Wang Y, Chen J, Wang X, Peng X, Ma L, Du J. Inhibition of Cxcr4 Disrupts Mouse Embryonic Palatal Mesenchymal Cell Migration and Induces Cleft Palate Occurrence. Int J Mol Sci 2023; 24:12740. [PMID: 37628919 PMCID: PMC10454820 DOI: 10.3390/ijms241612740] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 08/02/2023] [Accepted: 08/04/2023] [Indexed: 08/27/2023] Open
Abstract
Many processes take place during embryogenesis, and the development of the palate mainly involves proliferation, migration, osteogenesis, and epithelial-mesenchymal transition. Abnormalities in any of these processes can be the cause of cleft palate (CP). There have been few reports on whether C-X-C motif chemokine receptor 4 (CXCR4), which is involved in embryonic development, participates in these processes. In our study, the knockdown of Cxcr4 inhibited the migration of mouse embryonic palatal mesenchymal (MEPM) cells similarly to the use of its inhibitor plerixafor, and the inhibition of cell migration in the Cxcr4 knockdown group was partially reversed by supplementation with C-X-C motif chemokine ligand 12 (CXCL12). In combination with low-dose retinoic acid (RA), plerixafor increased the incidence of cleft palates in mice by decreasing the expression of Cxcr4 and its downstream migration-regulating gene Rac family small GTPase 1 (RAC1) mediating actin cytoskeleton to affect lamellipodia formation and focal complex assembly and ras homolog family member A (RHOA) regulating the actin cytoskeleton to affect stress fiber formation and focal complex maturation into focal adhesions. Our results indicate that the disruption of cell migration and impaired normal palatal development by inhibition of Cxcr4 expression might be mediated through Rac1 with RhoA. The combination of retinoic acid and plerixafor might increase the incidence of cleft palate, which also provided a rationale to guide the use of the drug during conception.
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Affiliation(s)
| | | | | | | | | | | | | | - Juan Du
- Laboratory of Orofacial Development, Laboratory of Molecular Signaling and Stem Cells Therapy, Molecular Laboratory for Gene Therapy and Tooth Regeneration, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Tiantan Xili No. 4, Beijing 100050, China; (X.Z.); (X.Z.); (Y.W.); (J.C.); (X.W.); (X.P.); (L.M.)
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19
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Crespo GV, Ortiz J, O'Farrill EH, Vlaar CP, Inyushin M, Kucheryavykh Y, Kucheryavykh L. The Rac inhibitor HV-107 as a potential therapeutic for metastatic breast cancer. Mol Med 2023; 29:75. [PMID: 37316799 PMCID: PMC10268403 DOI: 10.1186/s10020-023-00678-7] [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: 01/04/2023] [Accepted: 06/05/2023] [Indexed: 06/16/2023] Open
Abstract
BACKGROUND The significant challenge in treating triple-negative breast cancer (TNBC) lies in its high rate of distant metastasis. To address this, inhibiting metastasis formation in TNBC is vital. Rac is a key player in cancer metastasis. Previously, we developed Ehop-016, a Rac inhibitor that successfully reduced tumor growth and metastasis in mice. In this study, we assessed the effectiveness of HV-107, a derivative of Ehop-016, in inhibiting TNBC metastasis at lower doses. METHODS Rho GTPases activity assays were performed with the use of GST-PAK beads and Rac, Rho, and Cdc42 GLISA. Cell viability was assessed through trypan blue exclusion and MTT assays. Cell cycle analysis was conducted using flow cytometry. To evaluate invading capabilities, transwell assays and invadopodia formation assays were performed. Metastasis formation studies were conducted using a breast cancer xenograft mouse model. RESULTS HV-107 inhibited Rac activity by 50% in MDA-MB-231 and MDA-MB-468 cells at concentrations of 250-2000 nM, leading to a 90% decrease in invasion and invadopodia activity. Concentrations of 500 nM and above caused dose-dependent reductions in cell viability, resulting in up to 20% cell death after 72 h. Concentrations exceeding 1000 nM upregulated PAK1, PAK2, FAK, Pyk2, Cdc42, and Rho signallings, while Pyk2 was downregulated at 100-500 nM. Through in vitro experiments, optimal concentrations of HV-107 ranging from 250 to 500 nM were identified, effectively inhibiting Rac activity and invasion while minimizing off-target effects. In a breast cancer xenograft model, administration of 5 mg/kg HV-107 (administered intraperitoneally, 5 days a week) reduced Rac activity by 20% in tumors and decreased metastasis by 50% in the lungs and liver. No observed toxicity was noted at the tested doses. CONCLUSION The findings indicate that HV-107 exhibits promising potential as a therapeutic medication utilizing Rac inhibition mechanisms to address metastasis formation in TNBC.
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Affiliation(s)
- Grace Velez Crespo
- Department of Biochemistry, Universidad Central del Caribe, Bayamón, Puerto Rico.
| | - Jescelica Ortiz
- Department of Biochemistry, Universidad Central del Caribe, Bayamón, Puerto Rico
| | - Eliud Hernández O'Farrill
- Department of Pharmaceutical Science, School of Pharmacy, University of Puerto Rico, Medical Sciences Campus, San Juan, Puerto Rico
| | - Cornelis P Vlaar
- Department of Biochemistry, School of Medicine, University of Puerto Rico, Medical Sciences Campus, San Juan, Puerto Rico
| | - Mikhail Inyushin
- Department of Physiology, Universidad Central del Caribe, Bayamón, Puerto Rico
| | - Yuriy Kucheryavykh
- Department of Biochemistry, Universidad Central del Caribe, Bayamón, Puerto Rico
| | - Lilia Kucheryavykh
- Department of Biochemistry, Universidad Central del Caribe, Bayamón, Puerto Rico
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20
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Tian X, Nanding K, Dai X, Wang Q, Wang J, Morigen, Fan L. Pattern recognition receptor mediated innate immune response requires a Rif-dependent pathway. J Autoimmun 2023; 134:102975. [PMID: 36527784 DOI: 10.1016/j.jaut.2022.102975] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 12/02/2022] [Accepted: 12/06/2022] [Indexed: 12/23/2022]
Abstract
Small GTPases play critical roles in cell morphology, movement, and adhesion by dynamic regulation of actin cytoskeleton. The small Rho GTPase Rif/RhoF (Rho in filopodia) regulates the formation of filopodia and stress fibers in cells. Rif is highly expressed in a number of cell types in the immune system; however, it's role in immune system function is unclear. In this research, we found that Rif expression is necessary for NF-κB activation in primary immune cells, and mature dendritic cell (mature DCs) induced from Bone Marrow-Derived Dendritic Cells (BMDCs) isolated from Rif knock out (Rif KO) mice displayed impaired degradation of I-κBα, as well as reduced TNF-α secretion and p38 MAPK phosphorylation under LPS stimulation. Interestingly, we revealed that TLR agonists, such as LPS and poly (I:C), as well as bacterial virulence factor SopE could induce a transient increase in Rif activation in monocytes THP-1 cells. Furthermore, Rif was found to be an integral part of the TLR4, TLR3 and nodosome signaling complex. We further identified Src tyrosine kinases as upstream activator of Rif in both bacterial and viral induced immune responses. Moreover, activated Rif induces activation of transcription factors, such as NF-κB, AP-1 and IRF-3, and mediates inflammation through secretion of IL-6, IL-8 or TNFα. Rif activation by PRRs contributes in a variety of ways to protective host responses against invading microbes. Taken together, this study reveals that Rif is indispensable for both extracellular and intracellular pattern-recognition receptor-mediated innate immune responses. Rif possess broad anti-pathogenic effect and understanding of the molecular mechanisms by which this small Rho GTPase interferes with innate immune system will be beneficial to develop therapies against infectious agents.
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Affiliation(s)
- Xiaoxia Tian
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, 010020, PR China; The Laboratory for Tumor Molecular Diagnosis, Affiliated People's Hospital of Inner Mongolia Medical University, Hohhot, China
| | - Kathleen Nanding
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, 010020, PR China
| | - Xueyao Dai
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, 010020, PR China
| | - Qian Wang
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, 010020, PR China
| | - Junyu Wang
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, 010020, PR China
| | - Morigen
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, 010020, PR China.
| | - Lifei Fan
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, 010020, PR China.
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21
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Chen S, Zhang Z, Zhang Y, Choi T, Zhao Y. Activation Mechanism of RhoA Caused by Constitutively Activating Mutations G14V and Q63L. Int J Mol Sci 2022; 23:ijms232415458. [PMID: 36555100 PMCID: PMC9778661 DOI: 10.3390/ijms232415458] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 11/23/2022] [Accepted: 11/30/2022] [Indexed: 12/12/2022] Open
Abstract
RhoA, a member of Rho GTPases, regulates myriad cellular processes. Abnormal expression of RhoA has been implicated in various diseases, including cancers, developmental disorders and bacterial infections. RhoA mutations G14V and Q63L have been reported to constitutively activate RhoA. To figure out the mechanisms, in total, 1.8 μs molecular dynamics (MD) simulations were performed here on RhoAWT and mutants G14V and Q63L in GTP-bound forms, followed by dynamic analysis. Both mutations were found to affect the conformational dynamics of RhoA switch regions, especially switch I, shifting the whole ensemble from the wild type's open inactive state to different active-like states, where T37 and Mg2+ played important roles. In RhoAG14V, both switches underwent thorough state transition, whereas in RhoAQ63L, only switch I was sustained in a much more closed conformation with additional hydrophobic interactions introduced by L63. Moreover, significantly decreased solvent exposure of the GTP-binding site was observed in both mutants with the surrounding hydrophobic regions expanded, which furnished access to water molecules required for hydrolysis more difficult and thereby impaired GTP hydrolysis. These structural and dynamic differences first suggested the potential activation mechanism of RhoAG14V and RhoAQ63L. Together, our findings complemented the understanding of RhoA activation at the atomic level and can be utilized in the development of novel therapies for RhoA-related diseases.
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22
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Liu L, Sui R, Li L, Zhang L, Zeng D, Ni X, Sun J. Light Activates Cdc42-Mediated Needle-Shaped Filopodia Formation via the Integration of Small GTPases. Cell Mol Bioeng 2022; 15:599-609. [PMID: 36531863 PMCID: PMC9751244 DOI: 10.1007/s12195-022-00743-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Accepted: 09/28/2022] [Indexed: 11/28/2022] Open
Abstract
Introduction Cdc42 has been linked to multiple human cancers and is implicated in the migration of cancer cells. Cdc42 could be activated via biochemical and biophysical factors in tumor microenvironment, the precise control of Cdc42 was essential to determine its role to cell behaviors. Needle-shaped protrusions (filopodia) could sense the extracellular biochemical cues and pave the path for cell movement, which was a key structure involved in the regulation of cancer cell motility. Methods We used the photoactivatable Cdc42 to elucidate the breast cancer cell protrusions, the mutation of Cdc42 was to confirm the optogenetic results. We also inhibit the Cdc42, Rac or Rho respectively by the corresponding inhibitors. Results We identified that the activation of Cdc42 by light could greatly enhance the formation of filopodia, which was positive for the contribution of cell movement. The expression of Cdc42 active form Cdc42-Q61L in cells resulted in the longer and more filopodia while the Cdc42 inactive form Cdc42-T17N were with the shorter and less filopodia. Moreover, the inhibition of Cdc42, Rac or Rho all significantly reduced the filopodia numbers and length in the co-expression of Cdc42-Q61L, which showed that the integration of small GTPases was necessary in the formation of filopodia. Furthermore, photoactivation of Cdc42 failed to enhance the filopodia formation with the inhibition of Rac or Rho. However, with the inhibition of Cdc42, the photoactivation of Cdc42 could partially recover back the filopodia formations, which indicated that the integration of small GTPases was key for the filopodia formations. Conclusions Our work highlights that light activates Cdc42 is sufficient to promote filopodia formation without the destructive structures of small GTPases, it not only points out the novel technique to determine cell structure formations but also provides the experimental basis for the efficient small GTPases-based anti-cancer strategies.
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Affiliation(s)
- Lingling Liu
- School of Medical Laboratory Science, Chengdu Medical College, Chengdu, 610500 Sichuan China
| | - Ran Sui
- Animal Microecology Institute, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130 Sichuan China
| | - Lianxin Li
- Animal Microecology Institute, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130 Sichuan China
| | - Lin Zhang
- School of Medical Laboratory Science, Chengdu Medical College, Chengdu, 610500 Sichuan China
| | - Dong Zeng
- Animal Microecology Institute, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130 Sichuan China
| | - Xueqin Ni
- Animal Microecology Institute, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130 Sichuan China
| | - Jinghui Sun
- School of Medical Laboratory Science, Chengdu Medical College, Chengdu, 610500 Sichuan China
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23
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Wang T, Rao D, Yu C, Sheng J, Luo Y, Xia L, Huang W. RHO GTPase family in hepatocellular carcinoma. Exp Hematol Oncol 2022; 11:91. [DOI: 10.1186/s40164-022-00344-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 10/18/2022] [Indexed: 11/09/2022] Open
Abstract
AbstractRHO GTPases are a subfamily of the RAS superfamily of proteins, which are highly conserved in eukaryotic species and have important biological functions, including actin cytoskeleton reorganization, cell proliferation, cell polarity, and vesicular transport. Recent studies indicate that RHO GTPases participate in the proliferation, migration, invasion and metastasis of cancer, playing an essential role in the tumorigenesis and progression of hepatocellular carcinoma (HCC). This review first introduces the classification, structure, regulators and functions of RHO GTPases, then dissects its role in HCC, especially in migration and metastasis. Finally, we summarize inhibitors targeting RHO GTPases and highlight the issues that should be addressed to improve the potency of these inhibitors.
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24
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Herron JC, Hu S, Liu B, Watanabe T, Hahn KM, Elston TC. Spatial models of pattern formation during phagocytosis. PLoS Comput Biol 2022; 18:e1010092. [PMID: 36190993 PMCID: PMC9560619 DOI: 10.1371/journal.pcbi.1010092] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 10/13/2022] [Accepted: 09/22/2022] [Indexed: 11/17/2022] Open
Abstract
Phagocytosis, the biological process in which cells ingest large particles such as bacteria, is a key component of the innate immune response. Fcγ receptor (FcγR)-mediated phagocytosis is initiated when these receptors are activated after binding immunoglobulin G (IgG). Receptor activation initiates a signaling cascade that leads to the formation of the phagocytic cup and culminates with ingestion of the foreign particle. In the experimental system termed "frustrated phagocytosis", cells attempt to internalize micropatterned disks of IgG. Cells that engage in frustrated phagocytosis form "rosettes" of actin-enriched structures called podosomes around the IgG disk. The mechanism that generates the rosette pattern is unknown. We present data that supports the involvement of Cdc42, a member of the Rho family of GTPases, in pattern formation. Cdc42 acts downstream of receptor activation, upstream of actin polymerization, and is known to play a role in polarity establishment. Reaction-diffusion models for GTPase spatiotemporal dynamics exist. We demonstrate how the addition of negative feedback and minor changes to these models can generate the experimentally observed rosette pattern of podosomes. We show that this pattern formation can occur through two general mechanisms. In the first mechanism, an intermediate species forms a ring of high activity around the IgG disk, which then promotes rosette organization. The second mechanism does not require initial ring formation but relies on spatial gradients of intermediate chemical species that are selectively activated over the IgG patch. Finally, we analyze the models to suggest experiments to test their validity.
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Affiliation(s)
- John Cody Herron
- Curriculum in Bioinformatics and Computational Biology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
- Computational Medicine Program, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Shiqiong Hu
- Department of Pharmacology, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Bei Liu
- Department of Pharmacology, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Takashi Watanabe
- Department of Pharmacology, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Klaus M. Hahn
- Computational Medicine Program, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
- Department of Pharmacology, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Timothy C. Elston
- Curriculum in Bioinformatics and Computational Biology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
- Computational Medicine Program, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
- Department of Pharmacology, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
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25
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Kitzinger R, Fritz G, Henninger C. Nuclear RAC1 is a modulator of the doxorubicin-induced DNA damage response. BIOCHIMICA ET BIOPHYSICA ACTA. MOLECULAR CELL RESEARCH 2022; 1869:119320. [PMID: 35817175 DOI: 10.1016/j.bbamcr.2022.119320] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 06/17/2022] [Accepted: 06/22/2022] [Indexed: 06/15/2023]
Abstract
Rho GTPases like RAC1 are localized on the inner side of the outer cell membrane where they act as molecular switches that can trigger signal transduction pathways in response to various extracellular stimuli. Nuclear functions of RAC1 were identified that are related to mitosis, cell cycle arrest and apoptosis. Previously, we showed that RAC1 plays a role in the doxorubicin (Dox)-induced DNA damage response (DDR). In this context it is still unknown whether cytosolic RAC1 modulates the Dox-induced DDR or if a nuclear fraction of RAC1 is involved. Here, we silenced RAC1 in mouse embryonic fibroblasts (MEF) pharmacologically with EHT1864 or by using siRNA against Rac1. Additionally, we transfected MEF with RAC1 mutants (wild-type, dominant-negative, constitutively active) containing a nuclear localization sequence (NLS). Afterwards, we analysed the Dox-induced DDR by evaluation of fluorescent nuclear γH2AX and 53BP1 foci formation, as well as by detection of activated proteins of the DDR by western blot to elucidate the role of nuclear RAC1 in the DDR. Treatment with EHT1864 as well as Rac1 knock-down reduced the Dox-induced DSB-formation to a similar extent. Enhanced nuclear localization of dominant-negative as well as constitutively active RAC1 mimicked these effects. Expression of the RAC1 mutants altered the Dox-induced amount of pP53 and pKAP1 protein. The observed effects were independent of S1981 ATM phosphorylation. We conclude that RAC1 is required for a substantial activation of the Dox-induced DDR and balanced levels of active/inactive RAC1 inside the nucleus are a prerequisite for this response.
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Affiliation(s)
- Rebekka Kitzinger
- Institute of Toxicology, Medical Faculty of the Heinrich Heine University Düsseldorf, Moorenstr. 5, 40225 Düsseldorf, Germany
| | - Gerhard Fritz
- Institute of Toxicology, Medical Faculty of the Heinrich Heine University Düsseldorf, Moorenstr. 5, 40225 Düsseldorf, Germany
| | - Christian Henninger
- Institute of Toxicology, Medical Faculty of the Heinrich Heine University Düsseldorf, Moorenstr. 5, 40225 Düsseldorf, Germany.
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26
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Roy D, Sengupta D, Kulkarni K. Substrate induced dynamical remodeling of the binding pocket generates GTPase specificity in DOCK family of guanine nucleotide exchange factors. Biochem Biophys Res Commun 2022; 631:32-40. [PMID: 36162327 DOI: 10.1016/j.bbrc.2022.09.059] [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: 09/12/2022] [Revised: 09/14/2022] [Accepted: 09/14/2022] [Indexed: 11/17/2022]
Abstract
Dedicator of cytokinesis (DOCK) family of guanine nucleotide exchange factors (GEFs) activate two members of Rho family GTPases, Rac1/Cdc42, to exert diverse cellular processes, including cell migration. As DOCK GEFs have been critically implicated in tumour cell migration, understanding their function and specificity is imperative for designing anti-metastatic drugs. Based on their GTPase specificity they have been classified as Rac, Cdc42 and dual specific GEFs. Despite extensive structural studies, the factors that determine GTPase specificity of DOCK GEFs have remained elusive. Here, we show that subtle dynamical coupling between GEF and GTPase structures modulate the binding interface to generate mutual specificity. To cluster the dynamically coupled residues in GEF-GTPase complexes a novel intra-residue backbone-torsion-angles based mutual information (TMI) technique was employed. TMI was calculated from 4500 trajectories obtained from a total of 4.5μs molecular dynamics simulations performed on members of all the three clades of DOCK GEFs. The obtained clusters suggest a specificity generation mechanism that involves optimization of the binding pocket for the crucial divergent residue at the 56th position of Rac/Cdc42 (FCdc42/WRac1). These clusters encompass five residues from the structural segment lobe C - α10 helix of the DOCK proteins and functional SWI region of GTPase, which induce orchestrated structural modulations to generate the specificity. Even the conserved residues from SWI region are seen to augment the specificity defining dynamical rearrangements. Furthermore, the proposed dynamical GTPase- DOCK GEF specificity model was verified using mutagenesis studies on Rac1 and dual GTPase specific Dock2 and Dock6, respectively. Thus the current study provides the generic substrate specificity determinants of DOCK GEFs, which are not apparent from the conventional structural analysis.
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Affiliation(s)
- Debopriya Roy
- Division of Biochemical Sciences, CSIR-National Chemical Laboratory, Pune, 411008, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Durba Sengupta
- Physical and Materials Chemistry Division, CSIR-National Chemical Laboratory, Pune, 411008, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Kiran Kulkarni
- Division of Biochemical Sciences, CSIR-National Chemical Laboratory, Pune, 411008, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
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Şen S, Erber R. Neuronal Guidance Molecules in Bone Remodeling and Orthodontic Tooth Movement. Int J Mol Sci 2022; 23:ijms231710077. [PMID: 36077474 PMCID: PMC9456342 DOI: 10.3390/ijms231710077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 08/31/2022] [Accepted: 09/01/2022] [Indexed: 11/22/2022] Open
Abstract
During orthodontic tooth movement, mechanically induced remodeling occurs in the alveolar bone due to the action of orthodontic forces. The number of factors identified to be involved in mechanically induced bone remodeling is growing steadily. With the uncovering of the functions of neuronal guidance molecules (NGMs) for skeletal development as well as for bone homeostasis, NGMs are now also among the potentially significant factors for the regulation of bone remodeling during orthodontic tooth movement. This narrative review attempts to summarize the functions of NGMs in bone homeostasis and provides insight into the currently sparse literature on the functions of these molecules during orthodontic tooth movement. Presently, four families of NGMs are known: Netrins, Slits, Semaphorins, ephrins and Eph receptors. A search of electronic databases revealed roles in bone homeostasis for representatives from all four NGM families. Functions during orthodontic tooth movement, however, were only identified for Semaphorins, ephrins and Eph receptors. For these, crucial prerequisites for participation in the regulation of orthodontically induced bone remodeling, such as expression in cells of the periodontal ligament and in the alveolar bone, as well as mechanical inducibility, were shown, which suggests that the importance of NGMs in orthodontic tooth movement may be underappreciated to date and further research might be warranted.
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Affiliation(s)
- Sinan Şen
- Department of Orthodontics, University Medical Center Schleswig-Holstein, Campus Kiel, Christian Albrechts University, 24105 Kiel, Germany
- Correspondence: ; Tel.: +49-431-5002-6301
| | - Ralf Erber
- Department of Orthodontics and Dentofacial Orthopedics, University of Heidelberg, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany
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28
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He S, Zhang K, Cao Y, Liu G, Zou H, Song R, Liu Z. Effect of cadmium on Rho GTPases signal transduction during osteoclast differentiation. ENVIRONMENTAL TOXICOLOGY 2022; 37:1608-1617. [PMID: 35257471 DOI: 10.1002/tox.23510] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 02/14/2022] [Accepted: 02/19/2022] [Indexed: 06/14/2023]
Abstract
Osteoclasts are the key target cells for cadmium (Cd)-induced bone metabolism diseases, while Rho GTPases play an important role in osteoclast differentiation and bone resorption. To identify new therapeutic targets of Cd-induced bone diseases; we evaluated signal transduction through Rho GTPases during osteoclast differentiation under the influence of Cd. In osteoclastic precursor cells, 10 nM Cd induced pseudopodia stretching, promoted cell migration, upregulated the levels of Cdc42, and RhoQ mRNAs and downstream Rho-associated coiled-coil kinase 1 (ROCK1) and ROCK2 proteins, and downregulated the actin-related protein 2/3 (ARP2/3) levels. Cd at 2 and 5 μM shortened the pseudopodia, inhibited cell migration, and decreased ROCK1, ROCK2, and ARP2/3 protein levels; Cd at 5 μM also reduced the mRNA expression levels of Rac1, Rac2, and RhoU mRNAs and decreased the level of phosphorylated (p)-cofilin. In osteoclasts, 10 nM Cd induced the formation of sealing zones, slightly upregulated Cdc42 mRNA levels and ROCK2 and ARP2/3 protein levels and significantly reduced p-cofilin levels. Cd at 2 μM and 5 μM Cd blocked the fusion of precursor cells; and 5 μM Cd downregulated the expression levels of RhoB, Rac1, Rac3, and RhoU mRNAs, and ROCK1, p-cofilin and ARP2/3 protein levels, significantly. In vivo, Cd (at 5 or 25 mg/L) increased the levels of key proteins RhoA, Rac1/2/3, Cdc42, and RhoU and their mRNAs in bone marrow cells. In summary, the results suggested that Cd affected the differentiation process of osteoclast and altered the expression of several Rho GTPases, which might be crucial targets of Cd during the differentiation of osteoclasts.
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Affiliation(s)
- Shuangjiang He
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu, China
| | - Kanglei Zhang
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu, China
| | - Ying Cao
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu, China
| | - Gang Liu
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu, China
| | - Hui Zou
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu, China
| | - Ruilong Song
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu, China
| | - Zongping Liu
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu, China
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Silvestro S, Diomede F, Chiricosta L, Zingale VD, Marconi GD, Pizzicannella J, Valeri A, Avanzini MA, Calcaterra V, Pelizzo G, Mazzon E. The Role of Hypoxia in Improving the Therapeutic Potential of Mesenchymal Stromal Cells. A Comparative Study From Healthy Lung and Congenital Pulmonary Airway Malformations in Infants. Front Bioeng Biotechnol 2022; 10:868486. [PMID: 35774062 PMCID: PMC9237219 DOI: 10.3389/fbioe.2022.868486] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Accepted: 05/20/2022] [Indexed: 11/17/2022] Open
Abstract
Mesenchymal stromal cells (MSCs) play an important role in the field of regenerative medicine thanks to their immunomodulatory properties and their ability to secrete paracrine factors. The use of MSCs has also been tested in children with congenital lung diseases inducing fibrosis and a decrease in lung function. Congenital malformations of the pulmonary airways (CPAM) are the most frequently encountered lung lesion that results from defects in early development of airways. Despite the beneficial properties of MSCs, interventions aimed at improving the outcome of cell therapy are needed. Hypoxia may be an approach aimed to ameliorate the therapeutic potential of MSCs. In this regard, we evaluated the transcriptomic profile of MSCs collected from pediatric patients with CPAM, analyzing similarities and differences between healthy tissue (MSCs-lung) and cystic tissue (MSCs-CPAM) both in normoxia and in cells preconditioned with hypoxia (0.2%) for 24 h. Study results showed that hypoxia induces cell cycle activation, increasing in such a way the cell proliferation ability, and enhancing cell anaerobic metabolism in both MSCs-lung and MSCs-CPAM-lung. Additionally, hypoxia downregulated several pro-apoptotic genes preserving MSCs from apoptosis and, at the same time, improving their viability in both comparisons. Finally, data obtained indicates that hypoxia leads to a greater expression of genes involved in the regulation of the cytoskeleton in MSCs-lung than MSCs-CPAM.
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Affiliation(s)
| | - Francesca Diomede
- Department of Innovative Technologies in Medicine and Dentistry, University “G. D’Annunzio” Chieti-Pescara, Chieti, Italy
| | | | | | - Guya Diletta Marconi
- Department of Medical, Oral and Biotechnological Sciences, University “G. D’Annunzio” Chieti-Pescara, Chieti, Italy
| | | | - Andrea Valeri
- IRCCS Centro Neurolesi “Bonino-Pulejo”, Messina, Italy
| | - Maria Antonietta Avanzini
- Cell Factory, Pediatric Hematology Oncology Unit, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Valeria Calcaterra
- Pediatrics and Adolescentology Unit, Department of Internal Medicine, University of Pavia, Pavia, Italy
- Pediatric Department, Children’s Hospital “Vittore Buzzi”, Milano, Italy
| | - Gloria Pelizzo
- Pediatric Surgery Department, Children’s Hospital “Vittore Buzzi”, Milano, Italy
- Department of Biomedical and Clinical Sciences-L. Sacco, University of Milan, Milan, Italy
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30
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Boyd RJ, Olson TL, Zook JD, Stein D, Aceves M, Lin WH, Craciunescu FM, Hansen DT, Anastasiadis PZ, Singharoy A, Fromme P. Characterization and computational simulation of human Syx, a RhoGEF implicated in glioblastoma. FASEB J 2022; 36:e22378. [PMID: 35639414 PMCID: PMC9262375 DOI: 10.1096/fj.202101808rr] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 05/10/2022] [Accepted: 05/13/2022] [Indexed: 12/04/2022]
Abstract
Structural discovery of guanine nucleotide exchange factor (GEF) protein complexes is likely to become increasingly relevant with the development of new therapeutics targeting small GTPases and development of new classes of small molecules that inhibit protein‐protein interactions. Syx (also known as PLEKHG5 in humans) is a RhoA GEF implicated in the pathology of glioblastoma (GBM). Here we investigated protein expression and purification of ten different human Syx constructs and performed biophysical characterizations and computational studies that provide insights into why expression of this protein was previously intractable. We show that human Syx can be expressed and isolated and Syx is folded as observed by circular dichroism (CD) spectroscopy and actively binds to RhoA as determined by co‐elution during size exclusion chromatography (SEC). This characterization may provide critical insights into the expression and purification of other recalcitrant members of the large class of oncogenic—Diffuse B‐cell lymphoma (Dbl) homology GEF proteins. In addition, we performed detailed homology modeling and molecular dynamics simulations on the surface of a physiologically realistic membrane. These simulations reveal novel insights into GEF activity and allosteric modulation by the plekstrin homology (PH) domain. These newly revealed interactions between the GEF PH domain and the membrane embedded region of RhoA support previously unexplained experimental findings regarding the allosteric effects of the PH domain from numerous activity studies of Dbl homology GEF proteins. This work establishes new hypotheses for structural interactivity and allosteric signal modulation in Dbl homology RhoGEFs.
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Affiliation(s)
- Ryan J Boyd
- Biodesign Center for Applied Structural Discovery, Arizona State University, Tempe, Arizona, USA
| | - Tien L Olson
- Biodesign Center for Applied Structural Discovery, Arizona State University, Tempe, Arizona, USA
| | - James D Zook
- Biodesign Center for Applied Structural Discovery, Arizona State University, Tempe, Arizona, USA
| | - Derek Stein
- Biodesign Center for Applied Structural Discovery, Arizona State University, Tempe, Arizona, USA
| | - Manuel Aceves
- Biodesign Center for Applied Structural Discovery, Arizona State University, Tempe, Arizona, USA
| | - Wan-Hsin Lin
- Department of Cancer Biology, Mayo Clinic, Jacksonville, Florida, USA
| | - Felicia M Craciunescu
- Biodesign Center for Applied Structural Discovery, Arizona State University, Tempe, Arizona, USA
| | - Debra T Hansen
- Biodesign Center for Applied Structural Discovery, Arizona State University, Tempe, Arizona, USA.,Center for Innovations in Medicine, Arizona State University, Tempe, Arizona, USA
| | | | - Abhishek Singharoy
- Biodesign Center for Applied Structural Discovery, Arizona State University, Tempe, Arizona, USA
| | - Petra Fromme
- Biodesign Center for Applied Structural Discovery, Arizona State University, Tempe, Arizona, USA
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Apte A, Manich M, Labruyère E, Datta S. PI Kinase-EhGEF2-EhRho5 axis contributes to LPA stimulated macropinocytosis in Entamoeba histolytica. PLoS Pathog 2022; 18:e1010550. [PMID: 35594320 PMCID: PMC9173640 DOI: 10.1371/journal.ppat.1010550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 06/07/2022] [Accepted: 04/26/2022] [Indexed: 12/04/2022] Open
Abstract
Entamoeba histolytica is a protozoan responsible for several pathologies in humans. Trophozoites breach the intestinal site to enter the bloodstream and thus traverse to a secondary site. Macropinocytosis and phagocytosis, collectively accounting for heterophagy, are the two major processes responsible for sustenance of Entamoeba histolytica within the host. Both of these processes require significant rearrangements in the structure to entrap the target. Rho GTPases play an indispensable role in mustering proteins that regulate cytoskeletal remodelling. Unlike phagocytosis which has been studied in extensive detail, information on machinery of macropinocytosis in E. histolytica is still limited. In the current study, using site directed mutagenesis and RNAi based silencing, coupled with functional studies, we have demonstrated the involvement of EhRho5 in constitutive and LPA stimulated macropinocytosis. We also report that LPA, a bioactive phospholipid present in the bloodstream of the host, activates EhRho5 and translocates it from cytosol to plasma membrane and endomembrane compartments. Using biochemical and FRAP studies, we established that a PI Kinase acts upstream of EhRho5 in LPA mediated signalling. We further identified EhGEF2 as a guanine nucleotide exchange factor of EhRho5. In the amoebic trophozoites, EhGEF2 depletion leads to reduced macropinocytic efficiency of trophozoites, thus phenocopying its substrate. Upon LPA stimulation, EhGEF2 is found to sequester near the plasma membrane in a wortmannin sensitive fashion, explaining a possible mode for activation of EhRho5 in the amoebic trophozoites. Collectively, we propose that LPA stimulated macropinocytosis in E. histolytica is driven by the PI Kinase-EhGEF2-EhRho5 axis.
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Affiliation(s)
- Achala Apte
- Indian Institute of Science Education and Research, Bhopal, Madhya Pradesh, India
| | - Maria Manich
- Bioimage Analysis Unit, Institut Pasteur, Paris, France
| | | | - Sunando Datta
- Indian Institute of Science Education and Research, Bhopal, Madhya Pradesh, India
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32
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Sun Y, Zhang X, Wang Y, Zhang Z. Long-read RNA sequencing of Pacific abalone Haliotis discus hannai reveals innate immune system responses to environmental stress. FISH & SHELLFISH IMMUNOLOGY 2022; 122:131-145. [PMID: 35122948 DOI: 10.1016/j.fsi.2022.01.042] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 01/28/2022] [Accepted: 01/31/2022] [Indexed: 06/14/2023]
Abstract
Haliotis discus hannai is a commercially important mollusk species, and the abalone aquaculture sector has been jeopardized by deteriorating environmental circumstances such as bacterial infection and thermal stress during the hot summers. However, due to a paucity of genetic information, such as transcriptome resources, our understanding of their stress adaptation is restricted. In this research, using single-molecule long-read (SMRT) sequencing technology, a library composed of ten tissues (i.e., haemocytes, gills, muscle, hepatopancreas, digestive tract, mantle, mucous gland, ovary, testis and head) was constructed and sequenced. In all, 41,855 high-quality unique transcripts, among which 24,778 were successfully annotated. Additionally, 13,463 SSRs, 1,169 transcription factors, and 18,124 lncRNAs were identified in H. discus hannai transcriptome. Furthermore, multiple immune-related transcripts were identified according to KEGG annotation, and a portion of these transcripts were mapped into several classical immune-related pathways, including the PI3K-AKT signaling pathway and Toll-like receptor signaling pathway. Additionally, 24 typical sequences related to the immunity pathway were detected by RT-PCR; the results showed that most of the immune-related genes showed significantly high expression at 72 h after bacterial challenges and thermal stress, especially the expression level of genes in gills was significantly higher than that in haemocytes under V. parahaemolyticus stress at 24 h. At the same time. The analysis of alternative splicing identified several innate immunity-related functions genes, including CD109 and caspase 2. These results suggest that the complex immune system, particularly the powerful innate immunity system, was crucial for H. discus hannai response to numerous environmental challenges.
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Affiliation(s)
- Yulong Sun
- College of Marine Science, Fujian Agriculture and Forestry University, Fuzhou, 350002, China; Fisheries College, Jimei University, Xiamen, 361021, China
| | - Xin Zhang
- College of Marine Science, Fujian Agriculture and Forestry University, Fuzhou, 350002, China; Fisheries College, Jimei University, Xiamen, 361021, China
| | - Yilei Wang
- Fisheries College, Jimei University, Xiamen, 361021, China.
| | - Ziping Zhang
- College of Marine Science, Fujian Agriculture and Forestry University, Fuzhou, 350002, China; Key Laboratory of Marine Biotechnology of Fujian Province, Institute of Oceanology, Fujian Agriculture and Forestry University, Fuzhou, 350002, China.
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33
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Liu Y, Jones C, Coward K. An investigation of mechanisms underlying mouse blastocyst hatching: a ribonucleic acid sequencing study. F&S SCIENCE 2022; 3:35-48. [PMID: 35559994 DOI: 10.1016/j.xfss.2021.12.003] [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: 10/25/2021] [Revised: 12/17/2021] [Accepted: 12/17/2021] [Indexed: 06/15/2023]
Abstract
OBJECTIVE To investigate the regulatory mechanisms and signaling molecules underlying hatching in mouse embryos. DESIGN Experimental laboratory study using a mouse embryo model. SETTING University-based basic scientific research laboratory. ANIMALS A total of 40 B6C3F1 × B6D2F1 mouse embryos were used in this study. INTERVENTION(S) Frozen/thawed mouse embryos, at the 8-cell stage, were cultured in vitro for 2 days. The resulting hatching and prehatching blastocysts were then used for complementary deoxyribonucleic acid (cDNA) library preparation and ribonucleic acid (RNA) sequencing analysis (n = 8 for each group). Differentially expressed genes were then used for downstream functional analysis. In addition, a list of genes related to developmental progression in humans was used to identify genes that were potentially related to the hatching of human embryos. MAIN OUTCOME MEASURE(S) Differentially expressed genes, enriched Gene Ontology terms and canonical pathways, clustered gene networks, activated upstream regulators, and common genes between a gene list of hatching-related genes in mice and a gene list associated with developmental progression in humans. RESULT(S) A total 275 differentially expressed genes were identified between hatching and prehatching blastocysts: 230 up-regulated and 45 down-regulated genes. Functional enrichment analysis suggested that blastocyst hatching in vitro is an adenosine triphosphate (ATP)-dependent process that involves protein biosynthesis and organization of the cytoskeleton. Furthermore, by regulating cell motility, the RhoA signaling pathway (including Arpc2, Cfl1, Gsn, Pfn1, Tpi1, Grb2, Tmsb10, Enah, and Rnd3 genes) may be a crucial signaling pathway during hatching. We also identified a cluster of genes (Krt8, Krt7, Cldn4, and Aqp3) that exerted functional roles in cell-cell junctions and water homeostasis during hatching. Moreover, some growth factors (angiotensinogen and fibroblast growth factor 2) and endocrine factors (estrogen receptor and prolactin) were predicted to be involved in the regulation of embryo hatching. In addition, we identified 81 potential genes that are potentially involved in the hatching process in human embryos. CONCLUSION(S) Our analysis identified potential genes and molecular regulatory pathways involved in the blastocyst hatching process in mice; we also identified genes that may potentially regulate hatching in human embryos. Our findings enhance our knowledge of embryo development and provide useful information for further exploring the mechanisms underlying embryo hatching.
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Affiliation(s)
- Yaqiong Liu
- Nuffield Department of Women's and Reproductive Health, University of Oxford, Women's Centre, John Radcliffe Hospital, Headington, Oxford, United Kingdom
| | - Celine Jones
- Nuffield Department of Women's and Reproductive Health, University of Oxford, Women's Centre, John Radcliffe Hospital, Headington, Oxford, United Kingdom
| | - Kevin Coward
- Nuffield Department of Women's and Reproductive Health, University of Oxford, Women's Centre, John Radcliffe Hospital, Headington, Oxford, United Kingdom.
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Dinsmore CJ, Soriano P. Differential regulation of cranial and cardiac neural crest by serum response factor and its cofactors. eLife 2022; 11:e75106. [PMID: 35044299 PMCID: PMC8806183 DOI: 10.7554/elife.75106] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Accepted: 01/18/2022] [Indexed: 11/13/2022] Open
Abstract
Serum response factor (SRF) is an essential transcription factor that influences many cellular processes including cell proliferation, migration, and differentiation. SRF directly regulates and is required for immediate early gene (IEG) and actin cytoskeleton-related gene expression. SRF coordinates these competing transcription programs through discrete sets of cofactors, the ternary complex factors (TCFs) and myocardin-related transcription factors (MRTFs). The relative contribution of these two programs to in vivo SRF activity and mutant phenotypes is not fully understood. To study how SRF utilizes its cofactors during development, we generated a knock-in SrfaI allele in mice harboring point mutations that disrupt SRF-MRTF-DNA complex formation but leave SRF-TCF activity unaffected. Homozygous SrfaI/aI mutants die at E10.5 with notable cardiovascular phenotypes, and neural crest conditional mutants succumb at birth to defects of the cardiac outflow tract but display none of the craniofacial phenotypes associated with complete loss of SRF in that lineage. Our studies further support an important role for MRTF mediating SRF function in cardiac neural crest and suggest new mechanisms by which SRF regulates transcription during development.
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Affiliation(s)
- Colin J Dinsmore
- Department of Cell, Development and Regenerative Biology, Icahn School of Medicine at Mount SinaiNew YorkUnited States
| | - Philippe Soriano
- Department of Cell, Development and Regenerative Biology, Icahn School of Medicine at Mount SinaiNew YorkUnited States
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35
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Allam VSRR, Paudel KR, Gupta G, Singh SK, Vishwas S, Gulati M, Gupta S, Chaitanya MVNL, Jha NK, Gupta PK, Patel VK, Liu G, Kamal MA, Hansbro PM, Oliver BGG, Chellappan DK, Dua K. Nutraceuticals and mitochondrial oxidative stress: bridging the gap in the management of bronchial asthma. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:62733-62754. [PMID: 35796922 PMCID: PMC9477936 DOI: 10.1007/s11356-022-21454-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Accepted: 06/10/2022] [Indexed: 02/05/2023]
Abstract
Asthma is a chronic inflammatory disease primarily characterized by inflammation and reversible bronchoconstriction. It is currently one of the leading causes of morbidity and mortality in the world. Oxidative stress further complicates the pathology of the disease. The current treatment strategies for asthma mainly involve the use of anti-inflammatory agents and bronchodilators. However, long-term usage of such medications is associated with severe adverse effects and complications. Hence, there is an urgent need to develop newer, novel, and safe treatment modalities for the management of asthma. This has therefore prompted further investigations and detailed research to identify and develop novel therapeutic interventions from potent untapped resources. This review focuses on the significance of oxidative stressors that are primarily derived from both mitochondrial and non-mitochondrial sources in initiating the clinical features of asthma. The review also discusses the biological scavenging system of the body and factors that may lead to its malfunction which could result in altered states. Furthermore, the review provides a detailed insight into the therapeutic role of nutraceuticals as an effective strategy to attenuate the deleterious effects of oxidative stress and may be used in the mitigation of the cardinal features of bronchial asthma.
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Affiliation(s)
| | - Keshav Raj Paudel
- Centre for Inflammation, Centenary Institute and University of Technology Sydney, School of Life Sciences, Faculty of Science, Sydney, NSW, 2007, Australia
| | - Gaurav Gupta
- School of Pharmacy, Suresh Gyan Vihar University, Jagatpura, Jaipur, India
- Department of Pharmacology, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India
- Uttaranchal Institute of Pharmaceutical Sciences, Uttaranchal University, Dehradun, India
| | - Sachin Kumar Singh
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab, India
- Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, P.O. Box: 123 Broadway, Ultimo, NSW, 2007, Australia
| | - Sukriti Vishwas
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab, India
| | - Monica Gulati
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab, India
- Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, P.O. Box: 123 Broadway, Ultimo, NSW, 2007, Australia
| | - Saurabh Gupta
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | | | - Niraj Kumar Jha
- Department of Biotechnology, School of Engineering & Technology (SET), Sharda University, Greater Noida, Uttar Pradesh, India
- Department of Biotechnology, School of Applied & Life Sciences (SALS), Uttaranchal University, Dehradun, 248007, India
| | - Piyush Kumar Gupta
- Department of Life Sciences, School of Basic Sciences and Research (SBSR), Sharda University, Greater Noida, Uttar Pradesh, Australia
| | - Vyoma K Patel
- School of Clinical Medicine, Faculty of Medicine and Health, University of New South Wales, Sydney, NSW, 2052, Australia
- Faculty of Health, Australian Research Centre in Complementary and Integrative Medicine, University of Technology Sydney, Ultimo, NSW, 2007, Australia
| | - Gang Liu
- Centre for Inflammation, Centenary Institute and University of Technology Sydney, School of Life Sciences, Faculty of Science, Sydney, NSW, 2007, Australia
| | - Mohammad Amjad Kamal
- King Fahd Medical Research Center, King Abdulaziz University, P. O. Box 80216, Jeddah, 21589, Saudi Arabia
- Institutes for Systems Genetics, Frontiers Science Center for Disease related Molecular Network, West China Hospital, Sichuan University, Chengdu, China
- Enzymoics, Novel Global Community Educational Foundation, 7 Peterlee Place, Hebersham, NSW, 2770, Australia
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka, 1207, Bangladesh
| | - Philip M Hansbro
- Centre for Inflammation, Centenary Institute and University of Technology Sydney, School of Life Sciences, Faculty of Science, Sydney, NSW, 2007, Australia
| | - Brian Gregory George Oliver
- School of Life Sciences, Faculty of Science, University of Technology Sydney, Ultimo, NSW, Australia
- Woolcock Institute of Medical Research, University of Sydney, Sydney, NSW, Australia
| | - Dinesh Kumar Chellappan
- Department of Life Sciences, School of Pharmacy, International Medical University, Bukit Jalil, Kuala Lumpur, 57000, Malaysia
| | - Kamal Dua
- Woolcock Institute of Medical Research, University of Sydney, Sydney, NSW, Australia.
- Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, P.O. Box: 123 Broadway, Ultimo, NSW, 2007, Australia.
- Faculty of Health, Australian Research Centre in Complementary and Integrative Medicine, University of Technology Sydney, Ultimo, NSW, 2007, Australia.
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36
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Abdellatef S, Fakhoury I, Al Haddad M, Jaafar L, Maalouf H, Hanna S, Khalil B, El Masri Z, Hodgson L, El-Sibai M. StarD13 negatively regulates invadopodia formation and invasion in high-grade serous (HGS) ovarian adenocarcinoma cells by inhibiting Cdc42. Eur J Cell Biol 2022; 101:151197. [PMID: 34958986 PMCID: PMC8756770 DOI: 10.1016/j.ejcb.2021.151197] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 12/18/2021] [Accepted: 12/19/2021] [Indexed: 01/03/2023] Open
Abstract
Metastasis remains the main challenge to overcome for treating ovarian cancers. In this study, we investigate the potential role of the Cdc42 GAP StarD13 in the modulation of cell motility, invasion in ovarian cancer cells. StarD13 depletion does not affect the 2D motility of ovarian cancer cells. More importantly, StarD13 inhibits matrix degradation, invadopodia formation and cell invasion through the inhibition of Cdc42. StarD13 does not localize to mature TKS4-labeled invadopodia that possess matrix degradation ability, while a Cdc42 FRET biosensor, detects Cdc42 activation in these invadopodia. In fact, StarD13 localization and Cdc42 activation appear mutually exclusive in invadopodial structures. Finally, for the first time we uncover a potential role of Cdc42 in the direct recruitment of TKS4 to invadopodia. This study emphasizes the specific role of StarD13 as a narrow spatial regulator of Cdc42, inhibiting invasion, suggesting the suitability of StarD13 for targeted therapy.
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Affiliation(s)
- Sandra Abdellatef
- Department of Natural Sciences, School of Arts and Sciences, Lebanese American University, Beirut, Lebanon
| | - Isabelle Fakhoury
- Department of Natural Sciences, School of Arts and Sciences, Lebanese American University, Beirut, Lebanon
| | - Maria Al Haddad
- Department of Natural Sciences, School of Arts and Sciences, Lebanese American University, Beirut, Lebanon
| | - Leila Jaafar
- Department of Natural Sciences, School of Arts and Sciences, Lebanese American University, Beirut, Lebanon
| | - Hiba Maalouf
- Department of Natural Sciences, School of Arts and Sciences, Lebanese American University, Beirut, Lebanon
| | - Samer Hanna
- Department of Pediatrics Hematology/Oncology division, Weill Cornell Medicine, Joan & Sanford I. Weill Medical College of Cornell University, Ithaca, NY, USA
| | - Bassem Khalil
- Department of Medicine, Icahn School of Medicine at Mount Sinai, Department of Biological Sciences, Fordham University, Bronx, NY, USA
| | - Zeinab El Masri
- Department of Biochemistry and Molecular Biology, University Park, Pennsylvania State University, State College, PA, USA
| | - Louis Hodgson
- Department of Anatomy and Structural Biology, Albert Einstein College of Medicine of Yeshiva University, Bronx, NY, USA,Gruss-Lipper Biophotonics Center, Albert Einstein College of Medicine of Yeshiva University, Bronx, NY, USA
| | - Mirvat El-Sibai
- Department of Natural Sciences, School of Arts and Sciences, Lebanese American University, Beirut, Lebanon,Correspondence to: Department of Natural Sciences, Lebanese American University, P.O. Box: 13-5053, Chouran 1102 2801, Beirut, Lebanon. (M. El-Sibai)
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37
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Zhang Z, Liu M, Zheng Y. Role of Rho GTPases in stem cell regulation. Biochem Soc Trans 2021; 49:2941-2955. [PMID: 34854916 PMCID: PMC9008577 DOI: 10.1042/bst20211071] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 11/17/2021] [Accepted: 11/18/2021] [Indexed: 02/05/2023]
Abstract
The future of regenerative medicine relies on our understanding of stem cells which are essential for tissue/organ generation and regeneration to maintain and/or restore tissue homeostasis. Rho family GTPases are known regulators of a wide variety of cellular processes related to cytoskeletal dynamics, polarity and gene transcription. In the last decade, major new advances have been made in understanding the regulatory role and mechanism of Rho GTPases in self-renewal, differentiation, migration, and lineage specification in tissue-specific signaling mechanisms in various stem cell types to regulate embryonic development, adult tissue homeostasis, and tissue regeneration upon stress or damage. Importantly, implication of Rho GTPases and their upstream regulators or downstream effectors in the transformation, migration, invasion and tumorigenesis of diverse cancer stem cells highlights the potential of Rho GTPase targeting in cancer therapy. In this review, we discuss recent evidence of Rho GTPase signaling in the regulation of embryonic stem cells, multiple somatic stem cells, and cancer stem cells. We propose promising areas where Rho GTPase pathways may serve as useful targets for stem cell manipulation and related future therapies.
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Affiliation(s)
- Zheng Zhang
- Division of Experimental Hematology and Cancer Biology, Children’s Hospital Medical Center, University of Cincinnati, 3333 Burnet Avenue, Cincinnati, OH 45229, U.S.A
| | - Ming Liu
- Department of Abdominal Oncology, West China Hospital, Sichuan University, Chengdu, China
| | - Yi Zheng
- Division of Experimental Hematology and Cancer Biology, Children’s Hospital Medical Center, University of Cincinnati, 3333 Burnet Avenue, Cincinnati, OH 45229, U.S.A
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38
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Stoiber P, Scribani Rossi P, Pokharel N, Germany JL, York EA, Schaus SE, Hansen U. Factor quinolinone inhibitors alter cell morphology and motility by destabilizing interphase microtubules. Sci Rep 2021; 11:23564. [PMID: 34876605 PMCID: PMC8651680 DOI: 10.1038/s41598-021-02962-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Accepted: 11/18/2021] [Indexed: 11/17/2022] Open
Abstract
Factor quinolinone inhibitors are promising anti-cancer compounds, initially characterized as specific inhibitors of the oncogenic transcription factor LSF (TFCP2). These compounds exert anti-proliferative activity at least in part by disrupting mitotic spindles. Herein, we report additional interphase consequences of the initial lead compound, FQI1, in two telomerase immortalized cell lines. Within minutes of FQI1 addition, the microtubule network is disrupted, resulting in a substantial, although not complete, depletion of microtubules as evidenced both by microtubule sedimentation assays and microscopy. Surprisingly, this microtubule breakdown is quickly followed by an increase in tubulin acetylation in the remaining microtubules. The sudden breakdown and partial depolymerization of the microtubule network precedes FQI1-induced morphological changes. These involve rapid reduction of cell spreading of interphase fetal hepatocytes and increase in circularity of retinal pigment epithelial cells. Microtubule depolymerization gives rise to FH-B cell compaction, as pretreatment with taxol prevents this morphological change. Finally, FQI1 decreases the rate and range of locomotion of interphase cells, supporting an impact of FQI1-induced microtubule breakdown on cell motility. Taken together, our results show that FQI1 interferes with microtubule-associated functions in interphase, specifically cell morphology and motility.
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Affiliation(s)
- Patrick Stoiber
- grid.189504.10000 0004 1936 7558MCBB Graduate Program, Boston University, Boston, MA 02215 USA ,grid.189504.10000 0004 1936 7558Department of Biology, Boston University, Boston, MA 02215 USA
| | - Pietro Scribani Rossi
- grid.189504.10000 0004 1936 7558Department of Biology, Boston University, Boston, MA 02215 USA ,grid.7841.aPresent Address: Faculty of Medicine and Dentistry, Sapienza University of Rome, 00185 Rome, Italy
| | - Niranjana Pokharel
- grid.189504.10000 0004 1936 7558Department of Chemistry, Boston University, Boston, MA 02215 USA ,grid.189504.10000 0004 1936 7558Center for Molecular Discovery, Boston University, Boston, MA 02215 USA
| | - Jean-Luc Germany
- grid.189504.10000 0004 1936 7558Department of Biology, Boston University, Boston, MA 02215 USA
| | - Emily A. York
- grid.189504.10000 0004 1936 7558Department of Chemistry, Boston University, Boston, MA 02215 USA ,grid.189504.10000 0004 1936 7558Center for Molecular Discovery, Boston University, Boston, MA 02215 USA
| | - Scott E. Schaus
- grid.189504.10000 0004 1936 7558Department of Chemistry, Boston University, Boston, MA 02215 USA ,grid.189504.10000 0004 1936 7558Center for Molecular Discovery, Boston University, Boston, MA 02215 USA
| | - Ulla Hansen
- MCBB Graduate Program, Boston University, Boston, MA, 02215, USA. .,Department of Biology, Boston University, Boston, MA, 02215, USA.
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39
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Orduña-Castillo LB, Del-Río-Robles JE, García-Jiménez I, Zavala-Barrera C, Beltrán-Navarro YM, Hidalgo-Moyle JJ, Ramírez-Rangel I, Hernández-Bedolla MA, Reyes-Ibarra AP, Valadez-Sánchez M, Vázquez-Prado J, Reyes-Cruz G. Calcium sensing receptor stimulates breast cancer cell migration via the Gβγ-AKT-mTORC2 signaling pathway. J Cell Commun Signal 2021; 16:239-252. [PMID: 34854057 DOI: 10.1007/s12079-021-00662-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Accepted: 11/21/2021] [Indexed: 10/19/2022] Open
Abstract
Calcium sensing receptor, a pleiotropic G protein coupled receptor, activates secretory pathways in cancer cells and putatively exacerbates their metastatic behavior. Here, we show that various CaSR mutants, identified in breast cancer patients, differ in their ability to stimulate Rac, a small Rho GTPase linked to cytoskeletal reorganization and cell protrusion, but are similarly active on the mitogenic ERK pathway. To investigate how CaSR activates Rac and drives cell migration, we used invasive MDA-MB-231 breast cancer cells. We revealed, by pharmacological and knockdown strategies, that CaSR activates Rac and cell migration via the Gβγ-PI3K-mTORC2 pathway. These findings further support current efforts to validate CaSR as a relevant therapeutic target in metastatic cancer.
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Affiliation(s)
- Lennis Beatriz Orduña-Castillo
- Department of Cell Biology, CINVESTAV, Av. Instituto Politécnico Nacional 2508, Col. San Pedro Zacatenco, CP 07360, Mexico City, Mexico
| | - Jorge Eduardo Del-Río-Robles
- Department of Cell Biology, CINVESTAV, Av. Instituto Politécnico Nacional 2508, Col. San Pedro Zacatenco, CP 07360, Mexico City, Mexico
| | - Irving García-Jiménez
- Department of Cell Biology, CINVESTAV, Av. Instituto Politécnico Nacional 2508, Col. San Pedro Zacatenco, CP 07360, Mexico City, Mexico
| | - César Zavala-Barrera
- Department of Cell Biology, CINVESTAV, Av. Instituto Politécnico Nacional 2508, Col. San Pedro Zacatenco, CP 07360, Mexico City, Mexico
| | | | - Joseline Janai Hidalgo-Moyle
- Department of Cell Biology, CINVESTAV, Av. Instituto Politécnico Nacional 2508, Col. San Pedro Zacatenco, CP 07360, Mexico City, Mexico
| | | | - Marco A Hernández-Bedolla
- Department of Cell Biology, CINVESTAV, Av. Instituto Politécnico Nacional 2508, Col. San Pedro Zacatenco, CP 07360, Mexico City, Mexico.,Licenciatura en Enfermería, Escuela Superior de Huejutla, Universidad Autónoma del Estado de Hidalgo, Huejutla de Reyes, Hidalgo, México
| | - Alma P Reyes-Ibarra
- Department of Cell Biology, CINVESTAV, Av. Instituto Politécnico Nacional 2508, Col. San Pedro Zacatenco, CP 07360, Mexico City, Mexico
| | - Margarita Valadez-Sánchez
- Department of Cell Biology, CINVESTAV, Av. Instituto Politécnico Nacional 2508, Col. San Pedro Zacatenco, CP 07360, Mexico City, Mexico
| | | | - Guadalupe Reyes-Cruz
- Department of Cell Biology, CINVESTAV, Av. Instituto Politécnico Nacional 2508, Col. San Pedro Zacatenco, CP 07360, Mexico City, Mexico.
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40
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Shen J, Rossato FA, Cano I, Ng YSE. Novel engineered, membrane-tethered VEGF-A variants promote formation of filopodia, proliferation, survival, and cord or tube formation by endothelial cells via persistent VEGFR2/ERK signaling and activation of CDC42/ROCK pathways. FASEB J 2021; 35:e22036. [PMID: 34793603 DOI: 10.1096/fj.202100448rr] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 10/22/2021] [Accepted: 10/26/2021] [Indexed: 01/04/2023]
Abstract
Therapeutic angiogenesis would be clinically valuable in situations such as peripheral vascular disease in diabetic patients and tissue reperfusion following ischemia or injury, but approaches using traditional isoforms of vascular endothelial growth factor-A (VEGF) have had little success. The isoform VEGF165 is both soluble and matrix-associated, but can cause pathologic vascular changes. Freely diffusible VEGF121 is not associated with pathologic angiogenesis, but its failure to remain in the vicinity of the targeted area presents therapeutic challenges. In this study, we evaluate the cellular effects of engineered VEGF variants that tether extracellular VEGF121 to the cell membrane with the goal of activating VEGF receptor 2 (VEGFR2) in a sustained, autologous fashion in endothelial cells. When expressed by primary human retinal endothelial cells (hRECs), the engineered, membrane-tethered variants eVEGF-38 and eVEGF-53 provide a lasting VEGF signal that induces cell proliferation and survival, increases endothelial permeability, promotes the formation of a cord/tube network, and stimulates the formation of elongated filopodia on the endothelial cells. The engineered VEGF variants activate VEGFR2, MAPK/ERK, and the Rho GTPase mediators CDC42 and ROCK, activities that are required for the formation of the elongated filopodia. The sustained, pro-angiogenic activities induced by eVEGF-38 and eVEGF-53 support the potential of engineered VEGF variants-overexpressing endothelial cells as a novel combination of gene and cell-based therapeutic strategy for stimulating endothelial cell-autologous therapeutic angiogenesis.
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Affiliation(s)
- Junhui Shen
- Harvard Ophthalmology, Schepens Eye Research Institute of Massachusetts Eye and Ear, Boston, Massachusetts, USA.,Eye Center of the 2nd Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Franco Aparecido Rossato
- Harvard Ophthalmology, Schepens Eye Research Institute of Massachusetts Eye and Ear, Boston, Massachusetts, USA
| | - Issahy Cano
- Harvard Ophthalmology, Schepens Eye Research Institute of Massachusetts Eye and Ear, Boston, Massachusetts, USA
| | - Yin Shan Eric Ng
- Harvard Ophthalmology, Schepens Eye Research Institute of Massachusetts Eye and Ear, Boston, Massachusetts, USA
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41
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Li J, Chen W, Cao Y, Li ZR. The Identification of Alternative Polyadenylation in Stomach Adenocarcinomas Using the Genotype-Tissue Expression Project and the Cancer Genome Atlas- Stomach Adenocarcinoma Profiles. Int J Gen Med 2021; 14:6035-6045. [PMID: 34588807 PMCID: PMC8475968 DOI: 10.2147/ijgm.s329064] [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: 07/12/2021] [Accepted: 08/27/2021] [Indexed: 12/09/2022] Open
Abstract
Objective Alternative polyadenylation (APA) is a common mechanism that is present in most human genes and determines the length of the messenger ribonucleic acid (mRNA) three prime untranslated region (3ʹ-UTR), which can give rise to changes in mRNA stability and localization. However, little is known about the specific changes related to APA in stomach adenocarcinomas (STADs). Methods We integrated RNA sequencing data from The Cancer Genome Atlas and Genotype-Tissue Expression project to comprehensively analyze APA events in 289 cases of STAD. Results Our results showed that APA events were widespread in patients with STAD and were rich in genes related to known STAD pathways. The APA events result in the loss of tumor-suppressing micro-ribonucleic acid (miRNA) binding sites and increased heterogeneity in the length of the 3ʹ-UTR altered genes. Survival analysis revealed that specific subsets of 3ʹ-UTR-altered genes independently characterized a poor prognostic cohort among patients with STAD, thereby indicating the potential of APA as a new prognostic biomarker. Conclusion Our single-cancer analysis showed that by losing miRNA regulation, APA can become a driving factor for regulating the expression of oncogenic genes in STAD and promote its development. Our research revealed that APA events regulated STAD genes that were functionally related, thereby providing a new approach for gaining a better understanding of the progress of STADs and a means for identifying new drug targets as avenues of treatment.
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Affiliation(s)
- Jian Li
- Department of Gastrointestinal Surgery, Jiangxi Provincial People's Hospital Affiliated to Nanchang University, Nanchang, 330000, People's Republic of China
| | - Wen Chen
- Key Laboratory of Bioprocess Engineering of Jiangxi Province, College of Life Sciences, Jiangxi Science and Technology Normal University, Nanchang, People's Republic of China
| | - Yi Cao
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, 330000, People's Republic of China
| | - Zheng-Rong Li
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, 330000, People's Republic of China
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42
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Li P, Chen Y, Peng Y, Zhang Y, Zhou H, Chen X, Li T, Li S, Yang H, Wu C, Zheng C, Zhu J, You F, Li L, Qin X, Liu Y. Notch-1 signaling promotes reattachment of suspended cancer cells by cdc42-dependent microtentacles formation. Cancer Sci 2021; 112:4894-4908. [PMID: 34582616 PMCID: PMC8645759 DOI: 10.1111/cas.15146] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 09/15/2021] [Accepted: 09/23/2021] [Indexed: 01/14/2023] Open
Abstract
Circulating tumor cells (CTCs) are associated with a higher risk of metastasis in tumor patients. The adhesion and arrest of CTCs at a secondary site is an essential prerequisite for the occurrence of tumor metastasis. CTC reattachment has shown to be dependent on microtentacle (McTN) formation in vivo. However, the specific molecular mechanism of McTN formation in suspended cancer cells remains largely unclear. Here, we demonstrated that the activation of Notch-1 signaling triggers McTN formation to facilitate cell reattachment in suspended cell culture conditions. Moreover, molecular mechanistic studies revealed that McTN formation is governed by the balance between microtubule-driven outgrowth and actomyosin-driven cell contractility. The activation of Notch-1 downregulates the acetylation level of microtubules via the Cdc42/HDAC6 pathway, which contributes to microtubule polymerization. Simultaneously, Notch-1 signaling-induced Cdc42 activation also reduced phosphorylation of myosin regulatory light chain, leading to cell contractility attenuation. Altogether, these results defined a novel mechanism by which Notch-1 signaling disturbs the balance between the expansion of microtubules and contraction of the cortical actin, which promotes McTN formation and cell reattachment. Our findings provide a new perspective on the effective therapeutic target to prevent CTC reattachment.
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Affiliation(s)
- Ping Li
- Department of Biophysics, School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, China
| | - Yu Chen
- Department of Biophysics, School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, China
| | - Yueting Peng
- Department of Biophysics, School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, China
| | - Yixi Zhang
- Department of Biophysics, School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, China
| | - Hanying Zhou
- Department of Biophysics, School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, China
| | - Xiangyan Chen
- Department of Biophysics, School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, China
| | - Tingting Li
- Department of Biophysics, School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, China
| | - Shun Li
- Department of Biophysics, School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, China
| | - Hong Yang
- Department of Biophysics, School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, China
| | - Chunhui Wu
- Department of Biophysics, School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, China
| | - Chuan Zheng
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Jie Zhu
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Fengming You
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Li Li
- Department of Biophysics, School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, China
| | - Xiang Qin
- Department of Biophysics, School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, China
| | - Yiyao Liu
- Department of Biophysics, School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, China.,TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
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43
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El-Mais N, Fakhoury I, Al Haddad M, Nohra S, Abi-Habib R, El-Sibai M. Human Recombinant Arginase I [HuArgI(Co)-PEG5000]-Induced Arginine Depletion Inhibits Pancreatic Cancer Cell Migration and Invasion Through Autophagy. Pancreas 2021; 50:1187-1194. [PMID: 34714283 DOI: 10.1097/mpa.0000000000001891] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
OBJECTIVES Pancreatic cancer is one of the most aggressive solid cancers and the fourth leading cause of cancer death in men and women. We previously showed that arginine depletion, using arginase I [HuArgI(Co)-PEG5000], selectively triggers cell death by autophagy in PANC-1 pancreatic cancer cells. The mechanism of action of [HuArgI(Co)-PEG5000], however, has remained poorly understood. In this study, we investigated the effects of arginine depletion on PANC-1 cell migration, adhesion, and invasion and determined the main molecular targets, which mediate PANC-1 cell response to treatment with HuArgI(Co)-PEG5000. METHODS This was done through examining 2-dimensional (2D) cell motility assays (wound healing and time lapse), cell adhesion, and cell invasion assays, as well as immunostaining for focal adhesions and invadopodia in cells without or with the treatment with arginase. RESULTS We demonstrate that arginine depletion decreases PANC-1 2D cell migration, adhesion, and 3D invasion. Moreover, our data suggest that these effects are mediated by autophagy and subsequent decrease in the activation of members of Ras homolog gene family (Rho) GTPase family. CONCLUSIONS Altogether, these findings uncover the mechanism of action of [HuArgI(Co)-PEG5000] and highlight the promising and selective anticancer potential for arginine depletion in the treatment of pancreatic cancer cells.
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Affiliation(s)
- Nour El-Mais
- From the Department of Natural Sciences, School of Arts and Sciences, Lebanese American University, Beirut, Lebanon
| | - Isabelle Fakhoury
- From the Department of Natural Sciences, School of Arts and Sciences, Lebanese American University, Beirut, Lebanon
| | - Maria Al Haddad
- From the Department of Natural Sciences, School of Arts and Sciences, Lebanese American University, Beirut, Lebanon
| | - Sarah Nohra
- Department of Biosciences, School of Science and Technology, Università degli Studi di Milano, Milan, Italy
| | - Ralph Abi-Habib
- From the Department of Natural Sciences, School of Arts and Sciences, Lebanese American University, Beirut, Lebanon
| | - Mirvat El-Sibai
- From the Department of Natural Sciences, School of Arts and Sciences, Lebanese American University, Beirut, Lebanon
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44
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Suzuki-Kemuriyama N, Abe A, Nakane S, Uno K, Ogawa S, Watanabe A, Sano R, Yuki M, Miyajima K, Nakae D. Non-obese mice with nonalcoholic steatohepatitis fed on a choline-deficient, L-amino acid-defined, high-fat diet exhibit alterations in signaling pathways. FEBS Open Bio 2021; 11:2950-2965. [PMID: 34390210 PMCID: PMC8564345 DOI: 10.1002/2211-5463.13272] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 07/21/2021] [Accepted: 08/11/2021] [Indexed: 11/10/2022] Open
Abstract
Nonalcoholic steatohepatitis (NASH) is often associated with obesity, but some patients develop NASH without obesity. The physiological processes by which non-obese patients develop NASH and cirrhosis have not yet been determined. Here, we analyzed the effects of dietary methionine content on NASH induced in mice fed on a choline-deficient, methionine-lowered, L-amino acid-defined high-fat diet (CDAHFD). CDAHFD with insufficient methionine induced insulin sensitivity and enhanced NASH pathology, but without obesity. In contrast, CDAHFD with sufficient methionine induced steatosis, and unlike CDAHFD with insufficient methionine, also induced obesity and insulin resistance. Gene profile analysis revealed that the disease severity in CDAHFD may partially be due to upregulation of the Rho family GTPases pathway, and mitochondrial and nuclear receptor signal dysfunction. The signaling factors/pathways detected in this study may assist in future study of NASH regulation, especially its "non-obese" subtype.
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Affiliation(s)
- Noriko Suzuki-Kemuriyama
- Department of Nutritional Science and Food Safety, Faculty of Applied Bioscience, Tokyo University of Agriculture, 1-1-1, Sakura-ga-Oka, Setagaya, Tokyo, 156-8502, Japan
| | - Akari Abe
- Department of Nutritional Science and Food Safety, Graduate School of Applied Bioscience, Tokyo University of Agriculture, 1-1-1, Sakura-ga-Oka, Setagaya, Tokyo, 156-8502, Japan
| | - Sae Nakane
- Department of Nutritional Science and Food Safety, Graduate School of Applied Bioscience, Tokyo University of Agriculture, 1-1-1, Sakura-ga-Oka, Setagaya, Tokyo, 156-8502, Japan
| | - Kiniko Uno
- Department of Food and Nutritional Science, Graduate School of Applied Bioscience, Tokyo University of Agriculture, 1-1-1, Sakura-ga-Oka, Setagaya, Tokyo, 156-8502, Japan
| | - Shuji Ogawa
- Department of Food and Nutritional Science, Graduate School of Applied Bioscience, Tokyo University of Agriculture, 1-1-1, Sakura-ga-Oka, Setagaya, Tokyo, 156-8502, Japan
| | - Atsushi Watanabe
- Department of Nutritional Science and Food Safety, Graduate School of Applied Bioscience, Tokyo University of Agriculture, 1-1-1, Sakura-ga-Oka, Setagaya, Tokyo, 156-8502, Japan
| | - Ryuhei Sano
- Department of Nutritional Science and Food Safety, Graduate School of Applied Bioscience, Tokyo University of Agriculture, 1-1-1, Sakura-ga-Oka, Setagaya, Tokyo, 156-8502, Japan
| | - Megumi Yuki
- Department of Nutritional Science and Food Safety, Graduate School of Applied Bioscience, Tokyo University of Agriculture, 1-1-1, Sakura-ga-Oka, Setagaya, Tokyo, 156-8502, Japan
| | - Katsuhiro Miyajima
- Department of Nutritional Science and Food Safety, Faculty of Applied Bioscience, Tokyo University of Agriculture, 1-1-1, Sakura-ga-Oka, Setagaya, Tokyo, 156-8502, Japan.,Department of Nutritional Science and Food Safety, Graduate School of Applied Bioscience, Tokyo University of Agriculture, 1-1-1, Sakura-ga-Oka, Setagaya, Tokyo, 156-8502, Japan
| | - Dai Nakae
- Department of Nutritional Science and Food Safety, Faculty of Applied Bioscience, Tokyo University of Agriculture, 1-1-1, Sakura-ga-Oka, Setagaya, Tokyo, 156-8502, Japan.,Department of Nutritional Science and Food Safety, Graduate School of Applied Bioscience, Tokyo University of Agriculture, 1-1-1, Sakura-ga-Oka, Setagaya, Tokyo, 156-8502, Japan
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45
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Ridge SM, Whiteley AE, Yao H, Price TT, Brockman ML, Murray AS, Simon BG, Islam P, Sipkins DA. Pan-PI3Ki targets multiple B-ALL microenvironment interactions that fuel systemic and CNS relapse. Leuk Lymphoma 2021; 62:2690-2702. [PMID: 34355654 DOI: 10.1080/10428194.2021.1929963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
The majority of adult patients with acute lymphoblastic leukemia (ALL) suffer relapse, and in patients with central nervous system (CNS) metastasis, prognosis is particularly poor. We recently demonstrated a novel route of ALL CNS metastasis dependent on PI3Kδ regulation of the laminin receptor integrin α6. B-ALL cells did not, however, rely on PI3Kδ signaling for growth. Here we show that broad targeting of PI3K isoforms can induce growth arrest in B-ALL, reducing systemic disease burden in mice treated with a single agent pan-PI3Ki, copanlisib. Moreover, we show that cellular stress activates PI3K/Akt-dependent survival pathways in B-ALL, exposing their vulnerability to PI3Kδ and pan-PI3Ki. The addition of a brief course of copanlisib to chemotherapy delivered the combined benefits of increased survival, decreased systemic disease, and reduced CNS metastasis. These data suggest the promising, multifaceted potential of pan-PI3Ki for B-ALL CNS prophylaxis, systemic disease control, and chemosensitization.
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Affiliation(s)
- Sarah M Ridge
- Department of Medicine, Division of Hematologic Malignancies and Cellular Therapy, Duke University, Durham, NC, USA
| | - Andrew E Whiteley
- Department of Medicine, Division of Hematologic Malignancies and Cellular Therapy, Duke University, Durham, NC, USA
| | - Hisayuki Yao
- Department of Medicine, Division of Hematologic Malignancies and Cellular Therapy, Duke University, Durham, NC, USA.,Department of Stem Cell Biology and Medicine, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Trevor T Price
- Department of Medicine, Division of Hematologic Malignancies and Cellular Therapy, Duke University, Durham, NC, USA
| | - Maegan L Brockman
- Department of Medicine, Division of Hematologic Malignancies and Cellular Therapy, Duke University, Durham, NC, USA
| | - Andrew S Murray
- Department of Medicine, Division of Hematologic Malignancies and Cellular Therapy, Duke University, Durham, NC, USA
| | - Brennan G Simon
- Department of Medicine, Division of Hematologic Malignancies and Cellular Therapy, Duke University, Durham, NC, USA
| | - Prioty Islam
- Department of Medicine, Division of Hematologic Malignancies and Cellular Therapy, Duke University, Durham, NC, USA
| | - Dorothy A Sipkins
- Department of Medicine, Division of Hematologic Malignancies and Cellular Therapy, Duke University, Durham, NC, USA
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46
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Winters BL, Vaughan CW. Mechanisms of endocannabinoid control of synaptic plasticity. Neuropharmacology 2021; 197:108736. [PMID: 34343612 DOI: 10.1016/j.neuropharm.2021.108736] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 07/27/2021] [Accepted: 07/28/2021] [Indexed: 01/13/2023]
Abstract
The endogenous cannabinoid transmitter system regulates synaptic transmission throughout the nervous system. Unlike conventional transmitters, specific stimuli induce synthesis of endocannabinoids (eCBs) in the postsynaptic neuron, and these travel backwards to modulate presynaptic inputs. In doing so, eCBs can induce short-term changes in synaptic strength and longer-term plasticity. While this eCB regulation is near ubiquitous, it displays major regional and synapse specific variations with different synapse specific forms of short-versus long-term plasticity throughout the brain. These differences are due to the plethora of pre- and postsynaptic mechanisms which have been implicated in eCB signalling, the intricacies of which are only just being realised. In this review, we shall describe the current understanding and highlight new advances in this area, with a focus on the retrograde action of eCBs at CB1 receptors (CB1Rs).
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Affiliation(s)
- Bryony Laura Winters
- Pain Management Research Institute, Kolling Institute of Medical Research, Northern Clinical School, University of Sydney at Royal North Shore Hospital, NSW, Australia.
| | - Christopher Walter Vaughan
- Pain Management Research Institute, Kolling Institute of Medical Research, Northern Clinical School, University of Sydney at Royal North Shore Hospital, NSW, Australia
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47
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Mughees M, Bano F, Wajid S. Mechanism of WASP and WAVE family proteins in the progression of prostate cancer. PROTOPLASMA 2021; 258:683-693. [PMID: 33471226 DOI: 10.1007/s00709-021-01608-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Accepted: 01/08/2021] [Indexed: 06/12/2023]
Abstract
Prostate cancer (PCa) is the second most commonly diagnosed and third lethal cause of death from cancer in men worldwide. Despite the availability of vast treatment procedures, still the high occurrence of invasion and metastasis of PCa are reported in cancer patients. The WASP (Wiskott-Aldrich syndrome protein) and WAVE (WASP family verprolin homologous protein) family of proteins are actin cytoskeleton regulatory proteins, reported to enhance cancer cell invasion and migration in prostate cancer. Hence, this review sheds light on the studies that explored the potential role of WASP and WAVE family of proteins in invasion and metastasis of prostate cancer. The research articles explored for the completion of this review were mostly from PubMed and Google Scholar by using the appropriate keywords for indexing. The conserved function of WASP and WAVE protein family is to receive the upstream signals from the Rho GTPase family and transmit them to activate the Arp2/3 complex that leads to rapid actin polymerization at leading edge of cells, which is crucial for PCa metastasis. Therefore, targeting these proteins could reflect a very interesting therapeutic opportunity to combat prostate cancer.
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Affiliation(s)
- Mohd Mughees
- Department of Biotechnology, School of Chemical and Life Sciences, Jamia Hamdard, New Delhi, 110062, India
| | - Faizia Bano
- Department of Biotechnology, School of Chemical and Life Sciences, Jamia Hamdard, New Delhi, 110062, India
| | - Saima Wajid
- Department of Biotechnology, School of Chemical and Life Sciences, Jamia Hamdard, New Delhi, 110062, India.
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48
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Mäkitie RE, Henning P, Jiu Y, Kämpe A, Kogan K, Costantini A, Välimäki V, Medina‐Gomez C, Pekkinen M, Salusky IB, Schalin‐Jäntti C, Haanpää MK, Rivadeneira F, Bassett JHD, Williams GR, Lerner UH, Pereira RC, Lappalainen P, Mäkitie O. An ARHGAP25 variant links aberrant Rac1 function to early-onset skeletal fragility. JBMR Plus 2021; 5:e10509. [PMID: 34258505 PMCID: PMC8260816 DOI: 10.1002/jbm4.10509] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 04/10/2021] [Accepted: 04/21/2021] [Indexed: 11/10/2022] Open
Abstract
Ras homologous guanosine triphosphatases (RhoGTPases) control several cellular functions, including cytoskeletal actin remodeling and cell migration. Their activities are downregulated by GTPase-activating proteins (GAPs). Although RhoGTPases are implicated in bone remodeling and osteoclast and osteoblast function, their significance in human bone health and disease remains elusive. Here, we report defective RhoGTPase regulation as a cause of severe, early-onset, autosomal-dominant skeletal fragility in a three-generation Finnish family. Affected individuals (n = 13) presented with multiple low-energy peripheral and vertebral fractures despite normal bone mineral density (BMD). Bone histomorphometry suggested reduced bone volume, low surface area covered by osteoblasts and osteoclasts, and low bone turnover. Exome sequencing identified a novel heterozygous missense variant c.652G>A (p.G218R) in ARHGAP25, encoding a GAP for Rho-family GTPase Rac1. Variants in the ARHGAP25 5' untranslated region (UTR) also associated with BMD and fracture risk in the general population, across multiple genomewide association study (GWAS) meta-analyses (lead variant rs10048745). ARHGAP25 messenger RNA (mRNA) was expressed in macrophage colony-stimulating factor (M-CSF)-stimulated human monocytes and mouse osteoblasts, indicating a possible role for ARHGAP25 in osteoclast and osteoblast differentiation and activity. Studies on subject-derived osteoclasts from peripheral blood mononuclear cells did not reveal robust defects in mature osteoclast formation or resorptive activity. However, analysis of osteosarcoma cells overexpressing the ARHGAP25 G218R-mutant, combined with structural modeling, confirmed that the mutant protein had decreased GAP-activity against Rac1, resulting in elevated Rac1 activity, increased cell spreading, and membrane ruffling. Our findings indicate that mutated ARHGAP25 causes aberrant Rac1 function and consequently abnormal bone metabolism, highlighting the importance of RhoGAP signaling in bone metabolism in familial forms of skeletal fragility and in the general population, and expanding our understanding of the molecular pathways underlying skeletal fragility. © 2021 The Authors. JBMR Plus published by Wiley Periodicals LLC on behalf of American Society for Bone and Mineral Research.
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Affiliation(s)
- Riikka E. Mäkitie
- Folkhälsan Institute of GeneticsHelsinkiFinland
- Research Program for Clinical and Molecular Metabolism, Faculty of MedicineUniversity of HelsinkiHelsinkiFinland
- Molecular Endocrinology Laboratory, Department of Metabolism, Digestion and ReproductionImperial College LondonLondonUK
| | - Petra Henning
- Department of Internal Medicine and Clinical NutritionCentre for Bone and Arthritis Research, Institute of Medicine, Sahlgrenska Academy, University of GothenburgGothenburgSweden
| | - Yaming Jiu
- HiLIFE Institute of BiotechnologyUniversity of HelsinkiHelsinkiFinland
- The Center for Microbes, Development and Health, Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of ShanghaiChinese Academy of SciencesShanghaiChina
- University of Chinese Academy of SciencesBeijingChina
| | - Anders Kämpe
- Department of Molecular Medicine and Surgery and Center for Molecular MedicineKarolinska InstitutetStockholmSweden
| | - Konstantin Kogan
- HiLIFE Institute of BiotechnologyUniversity of HelsinkiHelsinkiFinland
| | - Alice Costantini
- Department of Molecular Medicine and Surgery and Center for Molecular MedicineKarolinska InstitutetStockholmSweden
| | - Ville‐Valtteri Välimäki
- Department of Orthopaedics and TraumatologyHelsinki University Central Hospital and Helsinki University, Jorvi HospitalEspooFinland
| | - Carolina Medina‐Gomez
- Department of Internal MedicineErasmus MC, University Medical Center RotterdamRotterdamThe Netherlands
| | - Minna Pekkinen
- Folkhälsan Institute of GeneticsHelsinkiFinland
- Research Program for Clinical and Molecular Metabolism, Faculty of MedicineUniversity of HelsinkiHelsinkiFinland
| | - Isidro B. Salusky
- Department of PediatricsDavid Geffen School of Medicine at UCLALos AngelesCaliforniaUSA
| | - Camilla Schalin‐Jäntti
- Endocrinology, Abdominal CenterUniversity of Helsinki and Helsinki University HospitalHelsinkiFinland
| | - Maria K. Haanpää
- Department of Genomics and Clinical GeneticsTurku University HospitalTurkuFinland
| | - Fernando Rivadeneira
- Department of Internal MedicineErasmus MC, University Medical Center RotterdamRotterdamThe Netherlands
| | - John H. Duncan Bassett
- Molecular Endocrinology Laboratory, Department of Metabolism, Digestion and ReproductionImperial College LondonLondonUK
| | - Graham R. Williams
- Molecular Endocrinology Laboratory, Department of Metabolism, Digestion and ReproductionImperial College LondonLondonUK
| | - Ulf H. Lerner
- Department of Internal Medicine and Clinical NutritionCentre for Bone and Arthritis Research, Institute of Medicine, Sahlgrenska Academy, University of GothenburgGothenburgSweden
| | - Renata C. Pereira
- Department of PediatricsDavid Geffen School of Medicine at UCLALos AngelesCaliforniaUSA
| | - Pekka Lappalainen
- HiLIFE Institute of BiotechnologyUniversity of HelsinkiHelsinkiFinland
| | - Outi Mäkitie
- Folkhälsan Institute of GeneticsHelsinkiFinland
- Research Program for Clinical and Molecular Metabolism, Faculty of MedicineUniversity of HelsinkiHelsinkiFinland
- Department of Molecular Medicine and Surgery and Center for Molecular MedicineKarolinska InstitutetStockholmSweden
- Children's HospitalUniversity and Helsinki University HospitalHelsinkiFinland
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KLHL38 involvement in non-small cell lung cancer progression via activation of the Akt signaling pathway. Cell Death Dis 2021; 12:556. [PMID: 34050138 PMCID: PMC8163838 DOI: 10.1038/s41419-021-03835-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 05/08/2021] [Accepted: 05/10/2021] [Indexed: 12/14/2022]
Abstract
Lung cancer is the leading cause of cancer-related death worldwide. KLHL38 has been reported to be upregulated during diapause but downregulated after androgen treatment during the reversal of androgen-dependent skeletal muscle atrophy. This study aimed to clarify the role of KLHL38 in non-small cell lung cancer (NSCLC). KLHL38 expression was evaluated in tumor and adjacent normal tissues from 241 patients with NSCLC using immunohistochemistry and real-time PCR, and its association with clinicopathological parameters was analyzed. KLHL38 levels positively correlated with tumor size, lymph node metastasis, and pathological tumor-node-metastasis stage (all P < 0.001). In NSCLC cell lines, KLHL38 overexpression promoted PTEN ubiquitination, thereby activating Akt signaling. It also promoted cell proliferation, migration, and invasion by upregulating the expression of genes encoding cyclin D1, cyclin B, c-myc, RhoA, and MMP9, while downregulating the expression of p21 and E-cadherin. In vivo experiments in nude mice further confirmed that KLHL38 promotes NSCLC progression through Akt signaling pathway activation. Together, these results indicate that KLHL38 is a valuable candidate prognostic biomarker and potential therapeutic target for NSCLC.
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50
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Yap JKY, Pickard BS, Gan SY, Chan EWL. Genes associated with amyloid-beta-induced inflammasome-mediated neuronal death identified using functional gene trap mutagenesis approach. Int J Biochem Cell Biol 2021; 136:106014. [PMID: 34022435 DOI: 10.1016/j.biocel.2021.106014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 02/18/2021] [Accepted: 05/11/2021] [Indexed: 01/15/2023]
Abstract
Alzheimer's disease is an irreversible neurodegenerative disease, which accounts for most dementia cases. Neuroinflammation is increasingly recognised for its roles in Alzheimer's disease pathogenesis which, in part, links amyloid-beta to neuronal death. Neuroinflammatory signalling can be exhibited by neurons themselves, potentially leading to widespread neuronal cell death, although neuroinflammation is commonly associated with glial cells. The presence of the inflammasomes such as nucleotide-binding leucine-rich repeat receptors protein 1 in neurons accelerates amyloid-beta -induced neuroinflammation and has been shown to trigger neuronal pyroptosis in murine Alzheimer's disease models. However, the pathways involved in amyloid-beta activation of inflammasomes have yet to be elucidated. In this study, a gene trap mutagenesis approach was utilised to resolve the genes functionally involved in inflammasome signalling within neurons, and the mechanism behind amyloid-beta-induced neuronal death. The results indicate that amyloid-beta significantly accelerated neuroinflammatory cell death in the presence of a primed inflammasome (the NLR family pyrin domain-containing 1). The mutagenesis screen discovered the atypical mitochondrial Ras homolog family member T1 as a significant contributor to amyloid-beta-induced inflammasome -mediated neuronal death. The mutagenesis screen also identified two genes involved in transforming growth factor beta signalling, namely Transforming Growth Factor Beta Receptor 1 and SNW domain containing 1. Additionally, a gene associated with cytoskeletal reorganisation, SLIT-ROBO Rho GTPase Activating Protein 3 was found to be neuroprotective. In conclusion, these genes could play important roles in inflammasome signalling in neurons, which makes them promising therapeutic targets for future drug development against neuroinflammation in Alzheimer's disease.
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Affiliation(s)
- Jeremy Kean Yi Yap
- School of Postgraduate Studies, International Medical University, Kuala Lumpur, Malaysia
| | - Benjamin Simon Pickard
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow, G4 0RE, United Kingdom
| | - Sook Yee Gan
- Department of Life Sciences, School of Pharmacy, International Medical University, Kuala Lumpur, Malaysia
| | - Elaine Wan Ling Chan
- Institute for Research, Development and Innovation, International Medical University, Kuala Lumpur, Malaysia.
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