1
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Rodrigues DB, Moreira HR, Jarnalo M, Horta R, Marques AP, Reis RL, Pirraco RP. Generation of 3D melanoma models using an assembloid-based approach. Acta Biomater 2024; 178:93-110. [PMID: 38382833 DOI: 10.1016/j.actbio.2024.02.023] [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: 07/25/2023] [Revised: 01/31/2024] [Accepted: 02/13/2024] [Indexed: 02/23/2024]
Abstract
While 3D tumor models have greatly evolved over the past years, there is still a strong requirement for more biosimilar models which are capable of recapitulating cellular crosstalk within the tumor microenvironment while equally displaying representative levels of tumor aggressiveness and invasion. Herein, we disclose an assembloid melanoma model based on the fusion of individual stromal multicellular spheroids (MCSs). In contrast to more traditional tumor models, we show that it is possible to develop self-organizing, heterotypic melanoma models where tumor cells present stem-cell like features like up-regulated pluripotency master regulators SOX2, POU5F1 and NANOG. Additionally, these assembloids display high levels of invasiveness while embedded in 3D matrices as evidenced by stromal cell promotion of melanoma cell invasion via metalloproteinase production. Furthermore, sensitivity to anticancer drug doxorubicin was demonstrated for the melanoma assembloid model. These findings suggest that melanoma assembloids may play a significant role in the field of 3D cancer models as they more closely mimic the tumor microenvironment when compared to more traditional MCSs, opening the doors to a better understanding of the role of tumor microenvironment in supporting tumor progression. STATEMENT OF SIGNIFICANCE: The development of complex 3D tumor models that better recapitulate the tumor microenvironment is crucial for both an improved comprehension of intercellular crosstalk and for more efficient drug screening. We have herein developed a self-organizing heterotypic assembloid-based melanoma model capable of closely mimicking the tumor microenvironment. Key features recapitulated were the preservation of cancer cell stemness, sensitivity to anti-cancer agents and tumor cell invasion promoted by stromal cells. The approach of pre-establishing distinct stromal domains for subsequent combination into more complex tumor constructs provides a route for developing superior tumor models with a higher degree of similarity to native cancer tissues.
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Affiliation(s)
- Daniel B Rodrigues
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga, Guimarães 4805-017, Portugal
| | - Helena R Moreira
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga, Guimarães 4805-017, Portugal
| | - Mariana Jarnalo
- Department of Plastic and Reconstructive Surgery, and Burn Unity, Centro Hospitalar de São João, Porto, Portugal; Faculty of Medicine - University of Porto, Portugal
| | - Ricardo Horta
- Department of Plastic and Reconstructive Surgery, and Burn Unity, Centro Hospitalar de São João, Porto, Portugal; Faculty of Medicine - University of Porto, Portugal
| | - Alexandra P Marques
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga, Guimarães 4805-017, Portugal
| | - Rui L Reis
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga, Guimarães 4805-017, Portugal
| | - Rogério P Pirraco
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga, Guimarães 4805-017, Portugal.
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2
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Xiao P, Zhang Y, Zeng Y, Yang D, Mo J, Zheng Z, Wang J, Zhang Y, Zhou Z, Zhong X, Yan W. Impaired angiogenesis in ageing: the central role of the extracellular matrix. J Transl Med 2023; 21:457. [PMID: 37434156 PMCID: PMC10334673 DOI: 10.1186/s12967-023-04315-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 06/30/2023] [Indexed: 07/13/2023] Open
Abstract
Each step in angiogenesis is regulated by the extracellular matrix (ECM). Accumulating evidence indicates that ageing-related changes in the ECM driven by cellular senescence lead to a reduction in neovascularisation, reduced microvascular density, and an increased risk of tissue ischaemic injury. These changes can lead to health events that have major negative impacts on quality of life and place a significant financial burden on the healthcare system. Elucidating interactions between the ECM and cells during angiogenesis in the context of ageing is neceary to clarify the mechanisms underlying reduced angiogenesis in older adults. In this review, we summarize ageing-related changes in the composition, structure, and function of the ECM and their relevance for angiogenesis. Then, we explore in detail the mechanisms of interaction between the aged ECM and cells during impaired angiogenesis in the older population for the first time, discussing diseases caused by restricted angiogenesis. We also outline several novel pro-angiogenic therapeutic strategies targeting the ECM that can provide new insights into the choice of appropriate treatments for a variety of age-related diseases. Based on the knowledge gathered from recent reports and journal articles, we provide a better understanding of the mechanisms underlying impaired angiogenesis with age and contribute to the development of effective treatments that will enhance quality of life.
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Affiliation(s)
- Ping Xiao
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Yanli Zhang
- Stomatological Hospital, Southern Medical University, Guangzhou, 510280, China
| | - Yuting Zeng
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Dehong Yang
- Department of Orthopedics Spinal Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Jiayao Mo
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Ziting Zheng
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Jilei Wang
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Yuxin Zhang
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Zhiyan Zhou
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Xincen Zhong
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Wenjuan Yan
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China.
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3
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Hao B, Beningo KA. Regulation of Traction Force through the Direct Binding of Basigin and Calpain 4. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.03.06.531406. [PMID: 36945510 PMCID: PMC10028868 DOI: 10.1101/2023.03.06.531406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
Abstract
Traction force and mechanosensing (the ability to sense mechanical attributes of the environment) are two important factors used by a cell to modify behavior during migration. Previously it was determined that the calpain small subunit, calpain 4, regulates the production of traction force independent of its proteolytic holoenzyme. A proteolytic enzyme is formed by calpain4 binding to either of its catalytic partners, calpain 1 and 2. To further understand how calpain 4 regulates traction force, we used two-hybrid analysis to identify more components of the traction pathway. We discovered that basigin, an integral membrane protein and a documented matrix-metalloprotease (MMP) inducer binds to calpain 4 in two-hybrid and pull-down assays. Traction force was deficient when basigin was silenced in MEF cells, and defective in substrate adhesion strength. Consistent with Capn4 -/- MEF cells, the cells deficient in basigin responded to localized stimuli. Together these results implicate basigin in the pathway in which calpain 4 regulates traction force independent of the catalytic large subunits.
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4
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Wu C, Zhang D, Chen J. Microtubules are essential for angiogenic sprout elongation in zebrafish. J Genet Genomics 2023; 50:126-129. [PMID: 36064182 DOI: 10.1016/j.jgg.2022.08.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 08/20/2022] [Accepted: 08/21/2022] [Indexed: 12/13/2022]
Affiliation(s)
- Chuan Wu
- Institute of Developmental Biology and Regenerative Medicine, Southwest University, Beibei, Chongqing 400715, China
| | - Da Zhang
- Institute of Developmental Biology and Regenerative Medicine, Southwest University, Beibei, Chongqing 400715, China
| | - Jingying Chen
- Institute of Developmental Biology and Regenerative Medicine, Southwest University, Beibei, Chongqing 400715, China; University of Chinese Academy of Sciences (Chongqing), Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Beibei, Chongqing 400714, China.
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5
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Tamayo-Angorrilla M, López de Andrés J, Jiménez G, Marchal JA. The biomimetic extracellular matrix: a therapeutic tool for breast cancer research. Transl Res 2022; 247:117-136. [PMID: 34844003 DOI: 10.1016/j.trsl.2021.11.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 11/17/2021] [Accepted: 11/21/2021] [Indexed: 12/14/2022]
Abstract
A deeper knowledge of the functional versatility and dynamic nature of the ECM has improved the understanding of cancer biology. Translational Significance: This work provides an in-depth view of the importance of the ECM to develop more mimetic breast cancer models, which aim to recreate the components and architecture of tumor microenvironment. Special focus is placed on decellularized matrices derived from tissue and cell culture, both in procurement and applications, as they have achieved great success in cancer research and pharmaceutical sector. The extracellular matrix (ECM) is increasingly recognized as a master regulator of cell behavior and response to breast cancer (BC) treatment. During BC progression, the mammary gland ECM is remodeled and altered in the composition and organization. Accumulated evidence suggests that changes in the composition and mechanics of ECM, orchestrated by tumor-stromal interactions along with ECM remodeling enzymes, are actively involved in BC progression and metastasis. Understanding how specific ECM components modulate the tumorigenic process has led to an increased interest in the development of biomaterial-based biomimetic ECM models to recapitulate key tumor characteristics. The decellularized ECMs (dECMs) have emerged as a promising in vitro 3D tumor model, whose recent advances in the processing and application could become the biomaterial by excellence for BC research and the pharmaceutical industry. This review offers a detailed view of the contribution of ECM in BC progression, and highlights the application of dECM-based biomaterials as promising personalized tumor models that more accurately mimic the tumorigenic mechanisms of BC and the response to treatment. This will allow the design of targeted therapeutic approaches adapted to the specific characteristics of each tumor that will have a great impact on the precision medicine applied to BC patients.
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Affiliation(s)
- Marta Tamayo-Angorrilla
- Biopathology and Regenerative Medicine Institute (IBIMER), Centre for Biomedical Research (CIBM), University of Granada, Granada, Spain
| | - Julia López de Andrés
- Biopathology and Regenerative Medicine Institute (IBIMER), Centre for Biomedical Research (CIBM), University of Granada, Granada, Spain; Instituto de Investigación Biosanitaria, ibs.GRANADA, University Hospitals of Granada- University of Granada, Granada, Spain; Excellence Research Unit "Modeling Nature" (MNat), University of Granada, Spain
| | - Gema Jiménez
- Biopathology and Regenerative Medicine Institute (IBIMER), Centre for Biomedical Research (CIBM), University of Granada, Granada, Spain; Instituto de Investigación Biosanitaria, ibs.GRANADA, University Hospitals of Granada- University of Granada, Granada, Spain; Excellence Research Unit "Modeling Nature" (MNat), University of Granada, Spain; Department of Human Anatomy and Embryology, Faculty of Medicine, University of Granada, Granada, Spain.
| | - Juan Antonio Marchal
- Biopathology and Regenerative Medicine Institute (IBIMER), Centre for Biomedical Research (CIBM), University of Granada, Granada, Spain; Instituto de Investigación Biosanitaria, ibs.GRANADA, University Hospitals of Granada- University of Granada, Granada, Spain; Excellence Research Unit "Modeling Nature" (MNat), University of Granada, Spain; Department of Human Anatomy and Embryology, Faculty of Medicine, University of Granada, Granada, Spain.
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6
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Abstract
Heart disease remains the leading cause of morbidity and mortality worldwide. With the advancement of modern technology, the role(s) of microtubules in the pathogenesis of heart disease has become increasingly apparent, though currently there are limited treatments targeting microtubule-relevant mechanisms. Here, we review the functions of microtubules in the cardiovascular system and their specific adaptive and pathological phenotypes in cardiac disorders. We further explore the use of microtubule-targeting drugs and highlight promising druggable therapeutic targets for the future treatment of heart diseases.
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Affiliation(s)
- Emily F Warner
- Department of Medicine, University of Cambridge, Addenbrookes Hospital, United Kingdom (E.F.W., X.L.)
| | - Yang Li
- Department of Cardiovascular Surgery, Zhongnan Hospital, Wuhan University School of Medicine, People's Republic of China (Y.L.)
| | - Xuan Li
- Department of Medicine, University of Cambridge, Addenbrookes Hospital, United Kingdom (E.F.W., X.L.)
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7
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Gao L, Hou Y, Wang H, Li M, Ma L, Chu Z, Donskyi IS, Haag R. A Metal‐Ion‐Incorporated Mussel‐Inspired Poly(Vinyl Alcohol)‐Based Polymer Coating Offers Improved Antibacterial Activity and Cellular Mechanoresponse Manipulation. Angew Chem Int Ed Engl 2022; 61:e202201563. [PMID: 35178851 PMCID: PMC9401572 DOI: 10.1002/anie.202201563] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Indexed: 11/12/2022]
Abstract
Cobalt (CoII) ions have been an attractive candidate for the biomedical modification of orthopedic implants for decades. However, limited research has been performed into how immobilized CoII ions affect the physical properties of implant devices and how these changes regulate cellular behavior. In this study we modified biocompatible poly(vinyl alcohol) with terpyridine and catechol groups (PVA‐TP‐CA) to create a stable surface coating in which bioactive metal ions could be anchored, endowing the coating with improved broad‐spectrum antibacterial activity against Escherichia coli and Staphylococcus aureus, as well as enhanced surface stiffness and cellular mechanoresponse manipulation. Strengthened by the addition of these metal ions, the coating elicited enhanced mechanosensing from adjacent cells, facilitating cell adhesion, spreading, proliferation, and osteogenic differentiation on the surface coating. This dual‐functional PVA‐TP‐CA/Co surface coating offers a promising approach for improving clinical implantation outcomes.
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Affiliation(s)
- Lingyan Gao
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education College of Chemistry & Materials Science Northwest University 710069 Xi'an China
| | - Yong Hou
- Institut für Chemie und Biochemie Freie Universität Berlin Takustrasse 3 14195 Berlin Germany
- Department of Electrical and Electronic Engineering The University of Hong Kong Pokfulam Road Hong Kong Hong Kong
| | - Haojie Wang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education College of Chemistry & Materials Science Northwest University 710069 Xi'an China
| | - Mingjun Li
- Institut für Chemie und Biochemie Freie Universität Berlin Takustrasse 3 14195 Berlin Germany
- School of Health Sciences and Biomedical Engineering Hebei University of Technology 300130 Tianjin China
| | - Linjie Ma
- Department of Electrical and Electronic Engineering The University of Hong Kong Pokfulam Road Hong Kong Hong Kong
| | - Zhiqin Chu
- Department of Electrical and Electronic Engineering The University of Hong Kong Pokfulam Road Hong Kong Hong Kong
| | - Ievgen S. Donskyi
- Institut für Chemie und Biochemie Freie Universität Berlin Takustrasse 3 14195 Berlin Germany
| | - Rainer Haag
- Institut für Chemie und Biochemie Freie Universität Berlin Takustrasse 3 14195 Berlin Germany
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8
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Merenich D, Nakos K, Pompan T, Donovan SJ, Gill A, Patel P, Spiliotis ET, Myers KA. Septins guide noncentrosomal microtubules to promote focal adhesion disassembly in migrating cells. Mol Biol Cell 2022; 33:ar40. [PMID: 35274967 PMCID: PMC9282018 DOI: 10.1091/mbc.e21-06-0334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 02/07/2022] [Accepted: 03/04/2022] [Indexed: 11/30/2022] Open
Abstract
Endothelial cell migration is critical for vascular angiogenesis and is compromised to facilitate tumor metastasis. The migratory process requires the coordinated assembly and disassembly of focal adhesions (FA), actin, and microtubules (MT). MT dynamics at FAs deliver vesicular cargoes and enhance actomyosin contractility to promote FA turnover and facilitate cell advance. Noncentrosomal (NC) MTs regulate FA dynamics and are sufficient to drive cell polarity, but how NC MTs target FAs to control FA turnover is not understood. Here, we show that Rac1 induces the assembly of FA-proximal septin filaments that promote NC MT growth into FAs and inhibit mitotic centromere-associated kinesin (MCAK)-associated MT disassembly, thereby maintaining intact MT plus ends proximal to FAs. Septin-associated MT rescue is coupled with accumulation of Aurora-A kinase and cytoplasmic linker-associated protein (CLASP) localization to the MT between septin and FAs. In this way, NC MTs are strategically positioned to undergo MCAK- and CLASP-regulated bouts of assembly and disassembly into FAs, thereby regulating FA turnover and cell migration.
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Affiliation(s)
- Daniel Merenich
- Department of Biological Sciences, University of the Sciences in Philadelphia, Philadelphia, PA 19104
| | | | - Taylor Pompan
- Department of Biological Sciences, University of the Sciences in Philadelphia, Philadelphia, PA 19104
| | - Samantha J. Donovan
- Department of Biological Sciences, University of the Sciences in Philadelphia, Philadelphia, PA 19104
| | - Amrik Gill
- Department of Biological Sciences, University of the Sciences in Philadelphia, Philadelphia, PA 19104
| | - Pranav Patel
- Department of Biological Sciences, University of the Sciences in Philadelphia, Philadelphia, PA 19104
| | | | - Kenneth A. Myers
- Department of Biological Sciences, University of the Sciences in Philadelphia, Philadelphia, PA 19104
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9
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Sharma V, Letson J, Furuta S. Fibrous stroma: Driver and passenger in cancer development. Sci Signal 2022; 15:eabg3449. [PMID: 35258999 DOI: 10.1126/scisignal.abg3449] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Cumulative evidence shows that fibrogenic stroma and stiff extracellular matrix (ECM) not only result from tumor growth but also play pivotal roles in cellular transformation and tumor initiation. This emerging concept may largely account for the increased cancer risk associated with environmental fibrogenic agents, such as asbestos and silica, and with chronic conditions that are fibrogenic, such as obesity and diabetes. It may also contribute to poor outcomes in patients treated with certain chemotherapeutics that can promote fibrosis, such as bleomycin and methotrexate. Although the mechanistic details of this phenomenon are still being unraveled, we provide an overview of the experimental evidence linking fibrogenic stroma and tumor initiation. In this Review, we will summarize the causes and consequences of fibrous stroma and how this stromal cue is transmitted to the nuclei of parenchymal cells through a physical continuum from the ECM to chromatin, as well as ECM-dependent biochemical signaling that contributes to cellular transformation.
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Affiliation(s)
- Vandana Sharma
- Department of Cancer Biology, College of Medicine and Life Sciences, University of Toledo Health Science Campus, 3000 Arlington Ave., Toledo, OH 43614, USA
| | - Joshua Letson
- Department of Cancer Biology, College of Medicine and Life Sciences, University of Toledo Health Science Campus, 3000 Arlington Ave., Toledo, OH 43614, USA
| | - Saori Furuta
- Department of Cancer Biology, College of Medicine and Life Sciences, University of Toledo Health Science Campus, 3000 Arlington Ave., Toledo, OH 43614, USA
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10
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Seetharaman S, Vianay B, Roca V, Farrugia AJ, De Pascalis C, Boëda B, Dingli F, Loew D, Vassilopoulos S, Bershadsky A, Théry M, Etienne-Manneville S. Microtubules tune mechanosensitive cell responses. NATURE MATERIALS 2022; 21:366-377. [PMID: 34663953 DOI: 10.1038/s41563-021-01108-x] [Citation(s) in RCA: 57] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Accepted: 08/20/2021] [Indexed: 05/05/2023]
Abstract
Mechanotransduction is a process by which cells sense the mechanical properties of their surrounding environment and adapt accordingly to perform cellular functions such as adhesion, migration and differentiation. Integrin-mediated focal adhesions are major sites of mechanotransduction and their connection with the actomyosin network is crucial for mechanosensing as well as for the generation and transmission of forces onto the substrate. Despite having emerged as major regulators of cell adhesion and migration, the contribution of microtubules to mechanotransduction still remains elusive. Here, we show that talin- and actomyosin-dependent mechanosensing of substrate rigidity controls microtubule acetylation (a tubulin post-translational modification) by promoting the recruitment of α-tubulin acetyltransferase 1 (αTAT1) to focal adhesions. Microtubule acetylation tunes the mechanosensitivity of focal adhesions and Yes-associated protein (YAP) translocation. Microtubule acetylation, in turn, promotes the release of the guanine nucleotide exchange factor GEF-H1 from microtubules to activate RhoA, actomyosin contractility and traction forces. Our results reveal a fundamental crosstalk between microtubules and actin in mechanotransduction that contributes to mechanosensitive cell adhesion and migration.
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Affiliation(s)
- Shailaja Seetharaman
- Cell Polarity, Migration and Cancer Unit, Institut Pasteur, UMR3691 CNRS, Equipe Labellisée Ligue Contre le Cancer, Paris, France
- Université Paris Descartes, Paris, France
| | - Benoit Vianay
- Paris University, INSERM, CEA, Hôpital Saint Louis, Institut Universitaire d'Hematologie, Paris, France
| | - Vanessa Roca
- Cell Polarity, Migration and Cancer Unit, Institut Pasteur, UMR3691 CNRS, Equipe Labellisée Ligue Contre le Cancer, Paris, France
| | - Aaron J Farrugia
- Mechanobiology Institute, National University of Singapore, Singapore, Singapore
| | - Chiara De Pascalis
- Cell Polarity, Migration and Cancer Unit, Institut Pasteur, UMR3691 CNRS, Equipe Labellisée Ligue Contre le Cancer, Paris, France
| | - Batiste Boëda
- Cell Polarity, Migration and Cancer Unit, Institut Pasteur, UMR3691 CNRS, Equipe Labellisée Ligue Contre le Cancer, Paris, France
| | - Florent Dingli
- PSL Research University, Centre de Recherche, Laboratoire de Spectrométrie de Masse Protéomique, Institut Curie, Paris, France
| | - Damarys Loew
- PSL Research University, Centre de Recherche, Laboratoire de Spectrométrie de Masse Protéomique, Institut Curie, Paris, France
| | | | - Alexander Bershadsky
- Mechanobiology Institute, National University of Singapore, Singapore, Singapore
| | - Manuel Théry
- Paris University, INSERM, CEA, Hôpital Saint Louis, Institut Universitaire d'Hematologie, Paris, France
| | - Sandrine Etienne-Manneville
- Cell Polarity, Migration and Cancer Unit, Institut Pasteur, UMR3691 CNRS, Equipe Labellisée Ligue Contre le Cancer, Paris, France.
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11
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Seetharaman S, Vianay B, Roca V, Farrugia AJ, De Pascalis C, Boëda B, Dingli F, Loew D, Vassilopoulos S, Bershadsky A, Théry M, Etienne-Manneville S. Microtubules tune mechanosensitive cell responses. NATURE MATERIALS 2022; 21:366-377. [PMID: 34663953 DOI: 10.1101/2020.07.22.205203] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Accepted: 08/20/2021] [Indexed: 05/24/2023]
Abstract
Mechanotransduction is a process by which cells sense the mechanical properties of their surrounding environment and adapt accordingly to perform cellular functions such as adhesion, migration and differentiation. Integrin-mediated focal adhesions are major sites of mechanotransduction and their connection with the actomyosin network is crucial for mechanosensing as well as for the generation and transmission of forces onto the substrate. Despite having emerged as major regulators of cell adhesion and migration, the contribution of microtubules to mechanotransduction still remains elusive. Here, we show that talin- and actomyosin-dependent mechanosensing of substrate rigidity controls microtubule acetylation (a tubulin post-translational modification) by promoting the recruitment of α-tubulin acetyltransferase 1 (αTAT1) to focal adhesions. Microtubule acetylation tunes the mechanosensitivity of focal adhesions and Yes-associated protein (YAP) translocation. Microtubule acetylation, in turn, promotes the release of the guanine nucleotide exchange factor GEF-H1 from microtubules to activate RhoA, actomyosin contractility and traction forces. Our results reveal a fundamental crosstalk between microtubules and actin in mechanotransduction that contributes to mechanosensitive cell adhesion and migration.
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Affiliation(s)
- Shailaja Seetharaman
- Cell Polarity, Migration and Cancer Unit, Institut Pasteur, UMR3691 CNRS, Equipe Labellisée Ligue Contre le Cancer, Paris, France
- Université Paris Descartes, Paris, France
| | - Benoit Vianay
- Paris University, INSERM, CEA, Hôpital Saint Louis, Institut Universitaire d'Hematologie, Paris, France
| | - Vanessa Roca
- Cell Polarity, Migration and Cancer Unit, Institut Pasteur, UMR3691 CNRS, Equipe Labellisée Ligue Contre le Cancer, Paris, France
| | - Aaron J Farrugia
- Mechanobiology Institute, National University of Singapore, Singapore, Singapore
| | - Chiara De Pascalis
- Cell Polarity, Migration and Cancer Unit, Institut Pasteur, UMR3691 CNRS, Equipe Labellisée Ligue Contre le Cancer, Paris, France
| | - Batiste Boëda
- Cell Polarity, Migration and Cancer Unit, Institut Pasteur, UMR3691 CNRS, Equipe Labellisée Ligue Contre le Cancer, Paris, France
| | - Florent Dingli
- PSL Research University, Centre de Recherche, Laboratoire de Spectrométrie de Masse Protéomique, Institut Curie, Paris, France
| | - Damarys Loew
- PSL Research University, Centre de Recherche, Laboratoire de Spectrométrie de Masse Protéomique, Institut Curie, Paris, France
| | | | - Alexander Bershadsky
- Mechanobiology Institute, National University of Singapore, Singapore, Singapore
| | - Manuel Théry
- Paris University, INSERM, CEA, Hôpital Saint Louis, Institut Universitaire d'Hematologie, Paris, France
| | - Sandrine Etienne-Manneville
- Cell Polarity, Migration and Cancer Unit, Institut Pasteur, UMR3691 CNRS, Equipe Labellisée Ligue Contre le Cancer, Paris, France.
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12
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Gao L, Hou Y, Wang H, Li M, Ma L, Chu Z, Donskyi IS, Haag R. A Metal‐Ion‐Incorporated Mussel‐Inspired Poly(Vinyl Alcohol)‐Based Polymer Coating Offers Improved Antibacterial Activity and Cellular Mechanoresponse Manipulation. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202201563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Lingyan Gao
- Northwest University College of Chemistry & Materials Science CHINA
| | - Yong Hou
- Freie Universitat Berlin Biology, Chemistry, Pharmacy GERMANY
| | - Haojie Wang
- Northwest University College of Chemistry & Materials Science CHINA
| | - Mingjun Li
- Freie Universität Berlin Fachbereich Biologie Chemie Pharmazie: Freie Universitat Berlin Fachbereich Biologie Chemie Pharmazie Biology, Chemistry, Pharmacy GERMANY
| | - Linjie Ma
- The University of Hong Kong Department of Electrical and Electronic Engineering HONG KONG
| | - Zhiqin Chu
- The University of Hong Kong Department of Electrical and Electronic Engineering HONG KONG
| | - Ievgen S. Donskyi
- Freie Universität Berlin Fachbereich Biologie Chemie Pharmazie: Freie Universitat Berlin Fachbereich Biologie Chemie Pharmazie Biology, Chemistry, Pharmacy GERMANY
| | - Rainer Haag
- Freie Universität Berlin: Freie Universitat Berlin Takustr. 3Institute of Chemistry and Biochemistry 14195 Berlin GERMANY
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13
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Zheng R, Du Y, Wang X, Liao T, Zhang Z, Wang N, Li X, Shen Y, Shi L, Luo J, Xia J, Wang Z, Xu J. KIF2C regulates synaptic plasticity and cognition in mice through dynamic microtubule depolymerization. eLife 2022; 11:72483. [PMID: 35138249 PMCID: PMC8828051 DOI: 10.7554/elife.72483] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Accepted: 02/01/2022] [Indexed: 11/13/2022] Open
Abstract
Dynamic microtubules play a critical role in cell structure and function. In nervous system, microtubules are the major route for cargo protein trafficking and they specially extend into and out of synapses to regulate synaptic development and plasticity. However, the detailed depolymerization mechanism that regulates dynamic microtubules in synapses and dendrites is still unclear. In this study, we find that KIF2C, a dynamic microtubule depolymerization protein without known function in the nervous system, plays a pivotal role in the structural and functional plasticity of synapses and regulates cognitive function in mice. Through its microtubule depolymerization capability, KIF2C regulates microtubule dynamics in dendrites, and regulates microtubule invasion of spines in neurons in a neuronal activity-dependent manner. Using RNAi knockdown and conditional knockout approaches, we showed that KIF2C regulates spine morphology and synaptic membrane expression of AMPA receptors. Moreover, KIF2C deficiency leads to impaired excitatory transmission, long-term potentiation, and altered cognitive behaviors in mice. Collectively, our study explores a novel function of KIF2C in the nervous system and provides an important regulatory mechanism on how activity-dependent microtubule dynamic regulates synaptic plasticity and cognition behaviors.
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Affiliation(s)
- Rui Zheng
- Department of Neurobiology and Department of Rehabilitation of the Children's Hospital, Zhejiang University School of Medicine, Hangzhou, China.,NHC and CAMS Key Laboratory of Medical Neurobiology, Ministry of Education Frontier Science Center for Brain Research and Brain Machine Integration, School of Brain Science and Brain Medicine, Zhejiang University, Hangzhou, China
| | - Yonglan Du
- Department of Neurobiology and Department of Rehabilitation of the Children's Hospital, Zhejiang University School of Medicine, Hangzhou, China.,NHC and CAMS Key Laboratory of Medical Neurobiology, Ministry of Education Frontier Science Center for Brain Research and Brain Machine Integration, School of Brain Science and Brain Medicine, Zhejiang University, Hangzhou, China
| | - Xintai Wang
- NHC and CAMS Key Laboratory of Medical Neurobiology, Ministry of Education Frontier Science Center for Brain Research and Brain Machine Integration, School of Brain Science and Brain Medicine, Zhejiang University, Hangzhou, China
| | - Tailin Liao
- Department of Neurobiology and Department of Rehabilitation of the Children's Hospital, Zhejiang University School of Medicine, Hangzhou, China.,NHC and CAMS Key Laboratory of Medical Neurobiology, Ministry of Education Frontier Science Center for Brain Research and Brain Machine Integration, School of Brain Science and Brain Medicine, Zhejiang University, Hangzhou, China
| | - Zhe Zhang
- Department of Neurobiology and Department of Rehabilitation of the Children's Hospital, Zhejiang University School of Medicine, Hangzhou, China.,NHC and CAMS Key Laboratory of Medical Neurobiology, Ministry of Education Frontier Science Center for Brain Research and Brain Machine Integration, School of Brain Science and Brain Medicine, Zhejiang University, Hangzhou, China
| | - Na Wang
- Department of Neurobiology and Department of Rehabilitation of the Children's Hospital, Zhejiang University School of Medicine, Hangzhou, China.,NHC and CAMS Key Laboratory of Medical Neurobiology, Ministry of Education Frontier Science Center for Brain Research and Brain Machine Integration, School of Brain Science and Brain Medicine, Zhejiang University, Hangzhou, China
| | - Xiumao Li
- Department of Orthopedic Surgery, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Ying Shen
- Department of Physiology and Department of Neurology of First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Lei Shi
- JNU-HKUST Joint Laboratory for Neuroscience and Innovative Drug Research, Jinan University, Guanzhou, China
| | - Jianhong Luo
- Department of Neurobiology and Department of Rehabilitation of the Children's Hospital, Zhejiang University School of Medicine, Hangzhou, China.,NHC and CAMS Key Laboratory of Medical Neurobiology, Ministry of Education Frontier Science Center for Brain Research and Brain Machine Integration, School of Brain Science and Brain Medicine, Zhejiang University, Hangzhou, China
| | - Jun Xia
- Division of Life Science and The Brain and Intelligence Research Institute, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Ziyi Wang
- Innovative Institute of Basic Medical Sciences of Zhejiang University (Yuhang), Hangzhou, China
| | - Junyu Xu
- Department of Neurobiology and Department of Rehabilitation of the Children's Hospital, Zhejiang University School of Medicine, Hangzhou, China.,NHC and CAMS Key Laboratory of Medical Neurobiology, Ministry of Education Frontier Science Center for Brain Research and Brain Machine Integration, School of Brain Science and Brain Medicine, Zhejiang University, Hangzhou, China
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14
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Hornak I, Rieger H. Stochastic model of T Cell repolarization during target elimination (II). Biophys J 2022; 121:1246-1265. [PMID: 35196513 PMCID: PMC9034251 DOI: 10.1016/j.bpj.2022.02.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 08/08/2021] [Accepted: 02/16/2022] [Indexed: 11/16/2022] Open
Abstract
Cytotoxic T lymphocytes (T cells) and natural killer cells form a tight contact, the immunological synapse (IS), with target cells, where they release their lytic granules containing perforin/granzyme and cytokine-containing vesicles. During this process the cell repolarizes and moves the microtubule organizing center (MTOC) toward the IS. In the first part of our work we developed a computational model for the molecular-motor-driven motion of the microtubule cytoskeleton during T cell polarization and analyzed the effects of cortical-sliding and capture-shrinkage mechanisms. Here we use this model to analyze the dynamics of the MTOC repositioning in situations in which 1) the IS is in an arbitrary position with respect to the initial position of the MTOC and 2) the T cell has two IS at two arbitrary positions. In the case of one IS, we found that the initial position determines which mechanism is dominant and that the time of repositioning does not rise monotonously with the MTOC-IS distance. In the case of two IS, we observe several scenarios that have also been reported experimentally: the MTOC alternates stochastically (but with a well-defined average transition time) between the two IS; it wiggles in between the two IS without transiting to one of the two; or it is at some point pulled to one of the two IS and stays there. Our model allows one to predict which scenario emerges in dependency of the mechanisms in action and the number of dyneins present. We report that the presence of capture-shrinkage mechanism in at least one IS is necessary to assure the transitions in every cell configuration. Moreover, the frequency of transitions does not decrease with the distance between the two IS and is the highest when both mechanisms are present in both IS.
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Affiliation(s)
- Ivan Hornak
- Department of Theoretical Physics, Center for Biophysics, Saarland University, Saarbrücken, Germany.
| | - Heiko Rieger
- Department of Theoretical Physics, Center for Biophysics, Saarland University, Saarbrücken, Germany
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15
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Jones JO, Moody WM, Shields JD. Microenvironmental modulation of the developing tumour: an immune-stromal dialogue. Mol Oncol 2021; 15:2600-2633. [PMID: 32741067 PMCID: PMC8486574 DOI: 10.1002/1878-0261.12773] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 07/03/2020] [Accepted: 07/27/2020] [Indexed: 12/17/2022] Open
Abstract
Successful establishment of a tumour relies on a cascade of interactions between cancer cells and stromal cells within an evolving microenvironment. Both immune and nonimmune cellular components are key factors in this process, and the individual players may change their role from tumour elimination to tumour promotion as the microenvironment develops. While the tumour-stroma crosstalk present in an established tumour is well-studied, aspects in the early tumour or premalignant microenvironment have received less attention. This is in part due to the challenges in studying this process in the clinic or in mouse models. Here, we review the key anti- and pro-tumour factors in the early microenvironment and discuss how understanding this process may be exploited in the clinic.
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Affiliation(s)
- James O. Jones
- MRC Cancer UnitHutchison/MRC Research CentreUniversity of CambridgeCambridgeUK
- Department of OncologyCambridge University Hospitals NHS Foundation TrustCambridgeUK
| | - William M. Moody
- MRC Cancer UnitHutchison/MRC Research CentreUniversity of CambridgeCambridgeUK
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16
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Lin PK, Salvador J, Xie J, Aguera KN, Koller GM, Kemp SS, Griffin CT, Davis GE. Selective and Marked Blockade of Endothelial Sprouting Behavior Using Paclitaxel and Related Pharmacologic Agents. THE AMERICAN JOURNAL OF PATHOLOGY 2021; 191:2245-2264. [PMID: 34563512 DOI: 10.1016/j.ajpath.2021.08.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 08/10/2021] [Accepted: 08/26/2021] [Indexed: 12/11/2022]
Abstract
Whether alterations in the microtubule cytoskeleton affect the ability of endothelial cells (ECs) to sprout and form branching networks of tubes was investigated in this study. Bioassays of human EC tubulogenesis, where both sprouting behavior and lumen formation can be rigorously evaluated, were used to demonstrate that addition of the microtubule-stabilizing drugs, paclitaxel, docetaxel, ixabepilone, and epothilone B, completely interferes with EC tip cells and sprouting behavior, while allowing for EC lumen formation. In bioassays mimicking vasculogenesis using single or aggregated ECs, these drugs induce ring-like lumens from single cells or cyst-like spherical lumens from multicellular aggregates with no evidence of EC sprouting behavior. Remarkably, treatment of these cultures with a low dose of the microtubule-destabilizing drug, vinblastine, led to an identical result, with complete blockade of EC sprouting, but allowing for EC lumen formation. Administration of paclitaxel in vivo markedly interfered with angiogenic sprouting behavior in developing mouse retina, providing corroboration. These findings reveal novel biological activities for pharmacologic agents that are widely utilized in multidrug chemotherapeutic regimens for the treatment of human malignant cancers. Overall, this work demonstrates that manipulation of microtubule stability selectively interferes with the ability of ECs to sprout, a necessary step to initiate and form branched capillary tube networks.
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Affiliation(s)
- Prisca K Lin
- Department of Molecular Pharmacology and Physiology, Morsani College of Medicine, University of South Florida School of Medicine, Tampa, Florida
| | - Jocelynda Salvador
- Department of Molecular Pharmacology and Physiology, Morsani College of Medicine, University of South Florida School of Medicine, Tampa, Florida
| | - Jun Xie
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Kalia N Aguera
- Department of Molecular Pharmacology and Physiology, Morsani College of Medicine, University of South Florida School of Medicine, Tampa, Florida
| | - Gretchen M Koller
- Department of Molecular Pharmacology and Physiology, Morsani College of Medicine, University of South Florida School of Medicine, Tampa, Florida
| | - Scott S Kemp
- Department of Molecular Pharmacology and Physiology, Morsani College of Medicine, University of South Florida School of Medicine, Tampa, Florida
| | - Courtney T Griffin
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma; Department of Cell Biology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - George E Davis
- Department of Molecular Pharmacology and Physiology, Morsani College of Medicine, University of South Florida School of Medicine, Tampa, Florida.
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17
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Cai X, Wang KC, Meng Z. Mechanoregulation of YAP and TAZ in Cellular Homeostasis and Disease Progression. Front Cell Dev Biol 2021; 9:673599. [PMID: 34109179 PMCID: PMC8182050 DOI: 10.3389/fcell.2021.673599] [Citation(s) in RCA: 81] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Accepted: 04/30/2021] [Indexed: 12/12/2022] Open
Abstract
Biophysical cues, such as mechanical properties, play a critical role in tissue growth and homeostasis. During organ development and tissue injury repair, compressive and tensional forces generated by cell-extracellular matrix or cell-cell interaction are key factors for cell fate determination. In the vascular system, hemodynamic forces, shear stress, and cyclic stretch modulate vascular cell phenotypes and susceptibility to atherosclerosis. Despite that emerging efforts have been made to investigate how mechanotransduction is involved in tuning cell and tissue functions in various contexts, the regulatory mechanisms remain largely unknown. One of the challenges is to understand the signaling cascades that transmit mechanical cues from the plasma membrane to the cytoplasm and then to the nuclei to generate mechanoresponsive transcriptomes. YAP and its homolog TAZ, the Hippo pathway effectors, have been identified as key mechanotransducers that sense mechanical stimuli and relay the signals to control transcriptional programs for cell proliferation, differentiation, and transformation. However, the upstream mechanosensors for YAP/TAZ signaling and downstream transcriptome responses following YAP/TAZ activation or repression have not been well characterized. Moreover, the mechanoregulation of YAP/TAZ in literature is highly context-dependent. In this review, we summarize the biomechanical cues in the tissue microenvironment and provide an update on the roles of YAP/TAZ in mechanotransduction in various physiological and pathological conditions.
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Affiliation(s)
- Xiaomin Cai
- Department of Oncology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Kuei-Chun Wang
- School of Biological and Health Systems Engineering, Arizona State University, Tempe, AZ, United States
| | - Zhipeng Meng
- Department of Molecular and Cellular Pharmacology, University of Miami Miller School of Medicine, Miami, FL, United States
- Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, FL, United States
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18
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Role of Microenvironment in Non-Hodgkin Lymphoma: Understanding the Composition and Biology. ACTA ACUST UNITED AC 2021; 26:206-216. [PMID: 32496454 DOI: 10.1097/ppo.0000000000000446] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Lymphoma microenvironment is a dynamic and well-orchestrated network of various immune and stromal cells that is indispensable for tumor cell survival, growth, migration, immune escape, and drug resistance. Recent progress has enhanced our knowledge of the pivotal role of microenvironment in lymphomagenesis. Understanding the characteristics, functions, and contributions of various components of the tumor niche, along with its bidirectional interactions with tumor cells, is paramount. It offers the potential to identify new therapeutic targets with the ability to restore antitumor immune surveillance and eliminate the protumoral factors contributed by the tumor niche.
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19
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Dong Z, Chen X, Li Y, Zhuo R, Lai X, Liu M. Microtubule Severing Protein Fignl2 Contributes to Endothelial and Neuronal Branching in Zebrafish Development. Front Cell Dev Biol 2021; 8:593234. [PMID: 33585441 PMCID: PMC7873885 DOI: 10.3389/fcell.2020.593234] [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: 08/10/2020] [Accepted: 12/21/2020] [Indexed: 11/13/2022] Open
Abstract
Previously, fidgetin (fign) and its family members fidgetin-like 1 (fignl1) and fidgetin-like 2 (fignl2) were found to be highly expressed during zebrafish brain development, suggesting their functions in the nervous system. In this study, we report the effects of loss-of-function of these genes on development. We designed and identified single-guide RNAs targeted to generate fign, fignl1, and fignl2 mutants and then observed the overall morphological and behavioral changes. Our findings showed that while fign and fignl1 null mutants displayed no significant defects, fignl2 null zebrafish mutants displayed pericardial edema, reduced heart rate, and smaller eyes; fignl2 null mutants responded to the light-darkness shift with a lower swimming velocity. fignl2 mRNAs were identified in vascular endothelial cells by in situ hybridization and re-analysis of an online dataset of single-cell RNAseq results. Finally, we used morpholino oligonucleotides to confirm that fignl2 knockdown resulted in severe heart edema, which was caused by abnormal vascular branching. The zebrafish fignl2 morphants also showed longer axonal length and more branches of caudal primary neurons. Taken together, we summarize that Fignl2 functions on cellular branches in endothelial cells and neurons. This study reported for the first time that the microtubule-severing protein Fignl2 contributes to cell branching during development.
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Affiliation(s)
- Zhangji Dong
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, China
| | - Xu Chen
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, China
| | - Yuanyuan Li
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, China
| | - Run Zhuo
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, China
| | - Xiaona Lai
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, China
| | - Mei Liu
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, China
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20
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Piezo1-Mediated Ca2+ Activities Regulate Brain Vascular Pathfinding during Development. Neuron 2020; 108:180-192.e5. [DOI: 10.1016/j.neuron.2020.07.025] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 06/26/2020] [Accepted: 07/21/2020] [Indexed: 12/17/2022]
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21
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Luthria G, Li R, Wang S, Prytyskach M, Kohler RH, Lauffenburger DA, Mitchison TJ, Weissleder R, Miller MA. In vivo microscopy reveals macrophage polarization locally promotes coherent microtubule dynamics in migrating cancer cells. Nat Commun 2020; 11:3521. [PMID: 32665556 PMCID: PMC7360550 DOI: 10.1038/s41467-020-17147-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Accepted: 06/02/2020] [Indexed: 01/07/2023] Open
Abstract
Microtubules (MTs) mediate mitosis, directional signaling, and are therapeutic targets in cancer. Yet in vivo analysis of cancer cell MT behavior within the tumor microenvironment remains challenging. Here we developed an imaging pipeline using plus-end tip tracking and intravital microscopy to quantify MT dynamics in live xenograft tumor models. Among analyzed features, cancer cells in vivo displayed higher coherent orientation of MT dynamics along their cell major axes compared with 2D in vitro cultures, and distinct from 3D collagen gel cultures. This in vivo MT phenotype was reproduced in vitro when cells were co-cultured with IL4-polarized MΦ. MΦ depletion, MT disruption, targeted kinase inhibition, and altered MΦ polarization via IL10R blockade all reduced MT coherence and/or tumor cell elongation. We show that MT coherence is a defining feature for in vivo tumor cell dynamics and migration, modulated by local signaling from pro-tumor macrophages. The regulation of microtubule (MT) dynamics in cancer cells within the tumor microenvironment is less understood. Here, the authors develop an imaging platform to examine MT dynamics in live xenograft models and show that pro-tumor macrophages modulate MT coherence and alignment to promote cancer cell migration.
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Affiliation(s)
- Gaurav Luthria
- Center for Systems Biology, Massachusetts General Hospital Research Institute, Boston, MA, 02114, USA.,Department of Biomedical Informatics, Harvard Medical School, Boston, MA, 02115, USA
| | - Ran Li
- Center for Systems Biology, Massachusetts General Hospital Research Institute, Boston, MA, 02114, USA.,Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, 02115, USA
| | - Stephanie Wang
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02181, USA
| | - Mark Prytyskach
- Center for Systems Biology, Massachusetts General Hospital Research Institute, Boston, MA, 02114, USA
| | - Rainer H Kohler
- Center for Systems Biology, Massachusetts General Hospital Research Institute, Boston, MA, 02114, USA
| | - Douglas A Lauffenburger
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02181, USA
| | - Timothy J Mitchison
- Department of Systems Biology, Harvard Medical School, Boston, MA, 02115, USA
| | - Ralph Weissleder
- Center for Systems Biology, Massachusetts General Hospital Research Institute, Boston, MA, 02114, USA. .,Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, 02115, USA. .,Department of Systems Biology, Harvard Medical School, Boston, MA, 02115, USA.
| | - Miles A Miller
- Center for Systems Biology, Massachusetts General Hospital Research Institute, Boston, MA, 02114, USA. .,Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, 02115, USA.
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22
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Vaeyens MM, Jorge-Peñas A, Barrasa-Fano J, Shapeti A, Roeffaers M, Van Oosterwyck H. Actomyosin-dependent invasion of endothelial sprouts in collagen. Cytoskeleton (Hoboken) 2020; 77:261-276. [PMID: 32588525 DOI: 10.1002/cm.21624] [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: 04/16/2020] [Revised: 06/11/2020] [Accepted: 06/22/2020] [Indexed: 12/30/2022]
Abstract
During sprouting angiogenesis-the growth of blood vessels from the existing vasculature-endothelial cells (ECs) adopt an elongated invasive form and exert forces at cell-cell and cell-matrix interaction sites. These cell shape changes and cellular tractions require extensive reorganizations of the actomyosin network. However, the respective roles of actin and myosin for endothelial sprouting are not fully elucidated. In this study, we further investigate these roles by treating 2D-migrating and 3D-sprouting ECs with chemical compounds targeting either myosin or actin. These treatments affected the endothelial cytoskeleton drastically and reduced the invasive response in a compound-specific manner; pointing toward a tight control of the actin and myosin activity during sprouting. Clusters in the data further illustrate that endothelial sprout morphology is sensitive to the in vitro model mechanical microenvironment and directs future research toward mechanical substrate guidance as a strategy for promoting engineered tissue vascularization. In summary, our results add to a growing corpus of research highlighting a key role of the cytoskeleton for sprouting angiogenesis.
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Affiliation(s)
- Marie-Mo Vaeyens
- Biomechanics Section (BMe), Department of Mechanical Engineering, KU Leuven, Leuven, Belgium
| | - Alvaro Jorge-Peñas
- Biomechanics Section (BMe), Department of Mechanical Engineering, KU Leuven, Leuven, Belgium
| | - Jorge Barrasa-Fano
- Biomechanics Section (BMe), Department of Mechanical Engineering, KU Leuven, Leuven, Belgium
| | - Apeksha Shapeti
- Biomechanics Section (BMe), Department of Mechanical Engineering, KU Leuven, Leuven, Belgium
| | - Maarten Roeffaers
- Department of Microbial and Molecular Systems (M2S), Centre for Membrane Separations, Adsorption, Catalysis and Spectroscopy for Sustainable Solutions (cMACS), KU Leuven, Leuven, Belgium
| | - Hans Van Oosterwyck
- Biomechanics Section (BMe), Department of Mechanical Engineering, KU Leuven, Leuven, Belgium.,Prometheus, Division of Skeletal Tissue Engineering, KU Leuven, Leuven, Belgium
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23
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Zanotelli MR, Chada NC, Johnson CA, Reinhart-King CA. The Physical Microenvironment of Tumors: Characterization and Clinical Impact. ACTA ACUST UNITED AC 2020. [DOI: 10.1142/s1793048020300029] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The tumor microenvironment plays a critical role in tumorigenesis and metastasis. As tightly controlled extracellular matrix homeostasis is lost during tumor progression, a dysregulated extracellular matrix can significantly alter cellular phenotype and drive malignancy. Altered physical properties of the tumor microenvironment alter cancer cell behavior, limit delivery and efficacy of therapies, and correlate with tumorigenesis and patient prognosis. The physical features of the extracellular matrix during tumor progression have been characterized; however, a wide range of methods have been used between studies and cancer types resulting in a large range of reported values. Here, we discuss the significant mechanical and structural properties of the tumor microenvironment, summarizing their reported values and clinical impact across cancer type and grade. We attempt to integrate the values in the literature to identify sources of reported differences and commonalities to better understand how aberrant extracellular matrix dynamics contribute to cancer progression. An intimate understanding of altered matrix properties during malignant transformation will be crucial in effectively detecting, monitoring, and treating cancer.
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Affiliation(s)
- Matthew R. Zanotelli
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Weill Hall, Ithaca, NY 14583, USA
- Department of Biomedical Engineering, Vanderbilt University, 2414 Highland Avenue, Nashville, TN 37235, USA
| | - Neil C. Chada
- Department of Biomedical Engineering, Vanderbilt University, 2414 Highland Avenue, Nashville, TN 37235, USA
| | - C. Andrew Johnson
- Department of Biomedical Engineering, Vanderbilt University, 2414 Highland Avenue, Nashville, TN 37235, USA
| | - Cynthia A. Reinhart-King
- Department of Biomedical Engineering, Vanderbilt University, 2414 Highland Avenue, Nashville, TN 37235, USA
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24
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Ki SM, Kim JH, Won SY, Oh SJ, Lee IY, Bae Y, Chung KW, Choi B, Park B, Choi E, Lee JE. CEP41-mediated ciliary tubulin glutamylation drives angiogenesis through AURKA-dependent deciliation. EMBO Rep 2020; 21:e48290. [PMID: 31885126 PMCID: PMC7001496 DOI: 10.15252/embr.201948290] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 11/18/2019] [Accepted: 11/29/2019] [Indexed: 12/14/2022] Open
Abstract
The endothelial cilium is a microtubule-based organelle responsible for blood flow-induced mechanosensation and signal transduction during angiogenesis. The precise function and mechanisms by which ciliary mechanosensation occurs, however, are poorly understood. Although posttranslational modifications (PTMs) of cytoplasmic tubulin are known to be important in angiogenesis, the specific roles of ciliary tubulin PTMs play remain unclear. Here, we report that loss of centrosomal protein 41 (CEP41) results in vascular impairment in human cell lines and zebrafish, implying a previously unknown pro-angiogenic role for CEP41. We show that proper control of tubulin glutamylation by CEP41 is necessary for cilia disassembly and that is involved in endothelial cell (EC) dynamics such as migration and tubulogenesis. We show that in ECs responding to shear stress or hypoxia, CEP41 activates Aurora kinase A (AURKA) and upregulates expression of VEGFA and VEGFR2 through ciliary tubulin glutamylation, as well as leads to the deciliation. We further show that in hypoxia-induced angiogenesis, CEP41 is responsible for the activation of HIF1α to trigger the AURKA-VEGF pathway. Overall, our results suggest the CEP41-HIF1α-AURKA-VEGF axis as a key molecular mechanism of angiogenesis and demonstrate how important ciliary tubulin glutamylation is in mechanosense-responded EC dynamics.
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Affiliation(s)
- Soo Mi Ki
- Department of Health Sciences and TechnologySAIHSTSungkyunkwan UniversitySeoulSouth Korea
| | - Ji Hyun Kim
- Department of Health Sciences and TechnologySAIHSTSungkyunkwan UniversitySeoulSouth Korea
| | - So Yeon Won
- Department of Health Sciences and TechnologySAIHSTSungkyunkwan UniversitySeoulSouth Korea
| | - Shin Ji Oh
- Department of Health Sciences and TechnologySAIHSTSungkyunkwan UniversitySeoulSouth Korea
| | - In Young Lee
- Laboratory of Cell Death and Human DiseasesDepartment of Life SciencesKorea UniversitySeoulSouth Korea
| | - Young‐Ki Bae
- Comparative Biomedicine Research & Tumor Microenvironment Research BranchResearch InstituteNational Cancer CenterGoyangKorea
| | - Ki Wha Chung
- Department of Biological SciencesKongju National UniversityKongjuSouth Korea
| | - Byung‐Ok Choi
- Department of NeurologySungkyunkwan University School of MedicineSeoulSouth Korea
| | - Boyoun Park
- Department of Systems BiologyCollege of Life Science and BiotechnologyYonsei UniversitySeoulSouth Korea
| | - Eui‐Ju Choi
- Laboratory of Cell Death and Human DiseasesDepartment of Life SciencesKorea UniversitySeoulSouth Korea
| | - Ji Eun Lee
- Department of Health Sciences and TechnologySAIHSTSungkyunkwan UniversitySeoulSouth Korea
- Samsung Biomedical Research InstituteSamsung Medical CenterSeoulSouth Korea
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25
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Alova A, Erofeev A, Gorelkin P, Bibikova T, Korchev Y, Majouga A, Bulychev A. Prolonged oxygen depletion in microwounded cells of Chara corallina detected with novel oxygen nanosensors. JOURNAL OF EXPERIMENTAL BOTANY 2020; 71:386-398. [PMID: 31563950 DOI: 10.1093/jxb/erz433] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Accepted: 09/23/2019] [Indexed: 06/10/2023]
Abstract
Primary physicochemical steps in microwounding of plants were investigated using electrochemical nano- and microprobes, with a focus on the role of oxygen in the wounding responses of individual plant cells. Electrochemical measurements of cell oxygen content were made with carbon-filled quartz micropipettes with platinum-coated tips (oxygen nanosensors). These novel platinum nanoelectrodes are useful for understanding cell oxygen metabolism and can be employed to study the redox biochemistry and biology of cells, tissues and organisms. We show here that microinjury of Chara corallina internodal cells with the tip of a glass micropipette is associated with a drastic decrease in oxygen concentration at the vicinity of the stimulation site. This decrease is reversible and lasts for up to 40 minutes. Membrane stretching, calcium influx, and cytoskeleton rearrangements were found to be essential for the localized oxygen depletion induced by cell wall microwounding. Inhibition of electron transport in chloroplasts or mitochondria did not affect the magnitude or timing of the observed response. In contrast, the inhibition of NADPH oxidase activity caused a significant reduction in the amplitude of the decrease in oxygen concentration. We suggest that the observed creation of localized anoxic conditions in response to cell wall puncture might be mediated by NADPH oxidase.
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Affiliation(s)
- Anna Alova
- Lomonosov Moscow State University, Leninskiye gory, Moscow, Russian Federation
| | - Alexander Erofeev
- Lomonosov Moscow State University, Leninskiye gory, Moscow, Russian Federation
- National University of Science and Technology 'MISIS', Moscow, Russian Federation
| | - Petr Gorelkin
- Medical Nanotechnology LLC, Skolkovo Innovation Center, Moscow, Russian Federation
| | - Tatyana Bibikova
- Lomonosov Moscow State University, Leninskiye gory, Moscow, Russian Federation
| | - Yury Korchev
- Department of Medicine, Imperial College, London, UK
- WPI Nano Life Science Institute, Kanazawa University, Kakuma-machi, Kanazawa, Japan
| | - Alexander Majouga
- Lomonosov Moscow State University, Leninskiye gory, Moscow, Russian Federation
- Dmitry Mendeleev University of Chemical Technology of Russia, Miusskaya, Moscow, Russian Federation
| | - Alexander Bulychev
- Lomonosov Moscow State University, Leninskiye gory, Moscow, Russian Federation
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26
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McKenzie AJ, Svec KV, Williams TF, Howe AK. Protein kinase A activity is regulated by actomyosin contractility during cell migration and is required for durotaxis. Mol Biol Cell 2019; 31:45-58. [PMID: 31721649 PMCID: PMC6938270 DOI: 10.1091/mbc.e19-03-0131] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Dynamic subcellular regulation of protein kinase A (PKA) activity is important for the motile behavior of many cell types, yet the mechanisms governing PKA activity during cell migration remain largely unknown. The motility of SKOV-3 epithelial ovarian cancer (EOC) cells has been shown to be dependent both on localized PKA activity and, more recently, on mechanical reciprocity between cellular tension and extracellular matrix rigidity. Here, we investigated the possibility that PKA is regulated by mechanical signaling during migration. We find that localized PKA activity in migrating cells rapidly decreases upon inhibition of actomyosin contractility (specifically, of myosin ATPase, Rho kinase, or myosin light-chain kinase activity). Moreover, PKA activity is spatially and temporally correlated with cellular traction forces in migrating cells. Additionally, PKA is rapidly and locally activated by mechanical stretch in an actomyosin contractility-dependent manner. Finally, inhibition of PKA activity inhibits mechanically guided migration, also known as durotaxis. These observations establish PKA as a locally regulated effector of cellular mechanotransduction and as a regulator of mechanically guided cell migration.
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Affiliation(s)
- Andrew J McKenzie
- Department of Pharmacology.,University of Vermont Cancer Center, and
| | - Kathryn V Svec
- Department of Pharmacology.,University of Vermont Cancer Center, and
| | - Tamara F Williams
- Department of Pharmacology.,University of Vermont Cancer Center, and
| | - Alan K Howe
- Department of Pharmacology.,University of Vermont Cancer Center, and.,Department of Molecular Physiology and Biophysics, University of Vermont, Burlington, VT 05405
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27
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Sato Y, Kamijo K, Tsutsumi M, Murakami Y, Takahashi M. Nonmuscle myosin IIA and IIB differently suppress microtubule growth to stabilize cell morphology. J Biochem 2019; 167:25-39. [DOI: 10.1093/jb/mvz082] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Accepted: 09/22/2019] [Indexed: 12/21/2022] Open
Abstract
Abstract
Precise regulation of cytoskeletal dynamics is important in many fundamental cellular processes such as cell shape determination. Actin and microtubule (MT) cytoskeletons mutually regulate their stability and dynamics. Nonmuscle myosin II (NMII) is a candidate protein that mediates the actin–MT crosstalk. NMII regulates the stability and dynamics of actin filaments to control cell morphology. Additionally, previous reports suggest that NMII-dependent cellular contractility regulates MT dynamics, and MTs also control cell morphology; however, the detailed mechanism whereby NMII regulates MT dynamics and the relationship among actin dynamics, MT dynamics and cell morphology remain unclear. The present study explores the roles of two well-characterized NMII isoforms, NMIIA and NMIIB, on the regulation of MT growth dynamics and cell morphology. We performed RNAi and drug experiments and demonstrated the NMII isoform-specific mechanisms—NMIIA-dependent cellular contractility upregulates the expression of some mammalian diaphanous-related formin (mDia) proteins that suppress MT dynamics; NMIIB-dependent inhibition of actin depolymerization suppresses MT growth independently of cellular contractility. The depletion of either NMIIA or NMIIB resulted in the increase in cellular morphological dynamicity, which was alleviated by the perturbation of MT dynamics. Thus, the NMII-dependent control of cell morphology significantly relies on MT dynamics.
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Affiliation(s)
- Yuta Sato
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Kita 13, Nishi 8, Kita-ku, Sapporo Hokkaido, Japan
| | - Keiju Kamijo
- Division of Anatomy and Cell Biology, Faculty of Medicine, Tohoku Medical and Pharmaceutical University, 1-15-1 Fukumuro, Miyagino-ku, Sendai Miyagi, Japan
| | - Motosuke Tsutsumi
- Research Institute for Electronic Science, Hokkaido University, Kita 20, Nishi 10, Kita-ku, Sapporo Hokkaido, Japan
| | - Yota Murakami
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Kita 13, Nishi 8, Kita-ku, Sapporo Hokkaido, Japan
- Department of Chemistry, Faculty of Science, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo Hokkaido, Japan
| | - Masayuki Takahashi
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Kita 13, Nishi 8, Kita-ku, Sapporo Hokkaido, Japan
- Department of Chemistry, Faculty of Science, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo Hokkaido, Japan
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28
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Wei Z, Volkova E, Blatchley MR, Gerecht S. Hydrogel vehicles for sequential delivery of protein drugs to promote vascular regeneration. Adv Drug Deliv Rev 2019; 149-150:95-106. [PMID: 31421149 PMCID: PMC6889011 DOI: 10.1016/j.addr.2019.08.005] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 07/04/2019] [Accepted: 08/12/2019] [Indexed: 12/12/2022]
Abstract
In recent years, as the mechanisms of vasculogenesis and angiogenesis have been uncovered, the functions of various pro-angiogenic growth factors (GFs) and cytokines have been identified. Therefore, therapeutic angiogenesis, by delivery of GFs, has been sought as a treatment for many vascular diseases. However, direct injection of these protein drugs has proven to have limited clinical success due to their short half-lives and systemic off-target effects. To overcome this, hydrogel carriers have been developed to conjugate single or multiple GFs with controllable, sustained, and localized delivery. However, these attempts have failed to account for the temporal complexity of natural angiogenic pathways, resulting in limited therapeutic effects. Recently, the emerging ideas of optimal sequential delivery of multiple GFs have been suggested to better mimic the biological processes and to enhance therapeutic angiogenesis. Incorporating sequential release into drug delivery platforms will likely promote the formation of neovasculature and generate vast therapeutic potential.
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Affiliation(s)
- Zhao Wei
- Department of Chemical and Biomolecular Engineering, The Institute for NanoBioTechnology Physical-Sciences Oncology Center, Johns Hopkins University, Baltimore, MD 21218, USA
| | - Eugenia Volkova
- Department of Chemical and Biomolecular Engineering, The Institute for NanoBioTechnology Physical-Sciences Oncology Center, Johns Hopkins University, Baltimore, MD 21218, USA
| | - Michael R Blatchley
- Department of Chemical and Biomolecular Engineering, The Institute for NanoBioTechnology Physical-Sciences Oncology Center, Johns Hopkins University, Baltimore, MD 21218, USA; Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Sharon Gerecht
- Department of Chemical and Biomolecular Engineering, The Institute for NanoBioTechnology Physical-Sciences Oncology Center, Johns Hopkins University, Baltimore, MD 21218, USA; Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, MD 21218, USA; Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.
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29
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Varol C. Tumorigenic Interplay Between Macrophages and Collagenous Matrix in the Tumor Microenvironment. Methods Mol Biol 2019; 1944:203-220. [PMID: 30840245 DOI: 10.1007/978-1-4939-9095-5_15] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The tumor microenvironment is a heterogeneous tissue that in addition to tumor cells, contain tumor-associated cell types such as immune cells, fibroblasts, and endothelial cells. Considerably important in the tumor microenvironment is its noncellular component, namely, the extracellular matrix (ECM). In particular, the collagenous matrix is subjected to significant alterations in its composition and structure that create a permissive environment for tumor growth, invasion, and dissemination. Among tumor-infiltrating immune cells, tumor-associated macrophages (TAMs) are numerous in the tumor stroma and are locally educated to mediate important biological functions that profoundly affect tumor initiation, growth, and dissemination. While the influence of TAMs and mechanical properties of the collagenous matrix on tumor invasion and progression have been comprehensively investigated individually, their interaction within the complex tumor microenvironment was overlooked. This review summarizes accumulating evidence that indicate the existence of an intricate tumorigenic crosstalk between TAMs and collagenous matrix. A better mechanistic comprehension of this reciprocal interplay may open a novel arena for cancer therapeutics.
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Affiliation(s)
- Chen Varol
- The Research Center for Digestive Tract and Liver Diseases, Sourasky Medical Center, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel. .,Department of Clinical Microbiology and Immunology, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel.
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30
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Khan GA, Bhagat S, Alam MI. PGE 2 -induced migration of human brain endothelial cell is mediated though protein kinase A in cooperation of EP receptors. J Leukoc Biol 2019; 105:705-717. [PMID: 30835912 DOI: 10.1002/jlb.2a0918-361r] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 01/21/2019] [Accepted: 02/10/2019] [Indexed: 12/14/2022] Open
Abstract
PGE2 plays a critical role in angiogenesis, ischemic, and neuro-inflammatory disorders of the brain, which breakdown the blood-brain barrier (BBB). However, the effects of PGE2 on human brain endothelial cell (HBECs) migration, a key process in the angiogenic response and BBB stability, are not well defined. In this study, we investigated the mechanism of PGE2 in HBECs migration in vitro. Here we showed that PGE2 stimulated migration of HBECs in a dose-time and matrix-dependent manner, evaluated by the Boyden chamber assay, but other prostanoids failed to do so. PGE2 receptor (EP2; butaprost), EP3 (sulprostone), and EP4 (PGE1 -OH) receptor agonists stimulated HBECs migration, but the silencing of EP significantly attenuated this effect. EP1 agonist (11-trinor PGE1 ) had no effect on HBECs migration on silencing of the EP1 receptor. We further showed that PGE2 stimulated cAMP production and activated protein kinase A (PKA), whereas pretreatment with the adenyl cyclase inhibitor (dideoxyadenosine; 1 μM) or PKA inhibitors, H89 (0.5 μM)/PKAI (1 μM), completely abrogated PGE2 -induced migration. Furthermore, silencing of the EP2/EP4 receptors significantly inhibited PGE2 -induced cAMP and PKA activation, whereas EP3 receptor silencing failed to do so. These results suggest that PGE2 regulates HBEC migration via cooperation of EP2, EP3, and EP4 receptors. Coupling of PGE2 to these receptors resulted in increased production of cAMP, which regulates HBEC migration via PKA pathway. The elucidation of molecular events involved is critical for the development of targeted strategies to treat cerebrovascular diseases associated with dysregulated angiogenesis.
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Affiliation(s)
- Gausal A Khan
- Department of Physiology, Defence Institute of Physiology and Allied Sciences, Timarpur, New Delhi, India
| | - Saumya Bhagat
- Department of Physiology, Defence Institute of Physiology and Allied Sciences, Timarpur, New Delhi, India
| | - Md Iqbal Alam
- Department of Physiology, HIMSR, Jamia Hamdard, Hamdard Nagar, New Delhi, India
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31
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Aoki T, Nishita M, Sonoda J, Ikeda T, Kakeji Y, Minami Y. Intraflagellar transport 20 promotes collective cancer cell invasion by regulating polarized organization of Golgi-associated microtubules. Cancer Sci 2019; 110:1306-1316. [PMID: 30742741 PMCID: PMC6447847 DOI: 10.1111/cas.13970] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 01/27/2019] [Accepted: 02/07/2019] [Indexed: 12/14/2022] Open
Abstract
Collective invasion is an important strategy of cancers of epithelial origin, including colorectal cancer (CRC), to infiltrate efficiently into local tissues as collective cell groups. Within the groups, cells at the invasive front, called leader cells, are highly polarized and motile, thereby providing the migratory traction that guides the follower cells. However, its underlying mechanisms remain unclear. We have previously shown that signaling emanating from the receptor tyrosine kinase Ror2 can promote invasion of human osteosarcoma cells and that intraflagellar transport 20 (IFT20) mediates its signaling to regulate Golgi structure and transport. Herein, we investigated the role of Ror2 and IFT20 in collective invasion of CRC cells, where Ror2 expression is either silenced or nonsilenced. We show by cell biological analyses that IFT20 promotes collective invasion of CRC cells, irrespective of expression and function of Ror2. Intraflagellar transport 20 is required for organization of Golgi‐associated, stabilized microtubules, oriented toward the direction of invasion in leader cells. Our results also indicate that IFT20 promotes reorientation of the Golgi apparatus toward the front side of leader cells. Live cell imaging of the microtubule plus‐end binding protein EB1 revealed that IFT20 is required for continuous polarized microtubule growth in leader cells. These results indicate that IFT20 plays an important role in collective invasion of CRC cells by regulating organization of Golgi‐associated, stabilized microtubules and Golgi polarity in leader cells.
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Affiliation(s)
- Tomoaki Aoki
- Division of Cell Physiology, Department of Physiology and Cell biology, Graduate School of Medicine, Kobe University, Kobe, Japan.,Division of Gastrointestinal Surgery, Department of Surgery, Graduate School of Medicine, Kobe University, Kobe, Japan
| | - Michiru Nishita
- Division of Cell Physiology, Department of Physiology and Cell biology, Graduate School of Medicine, Kobe University, Kobe, Japan
| | - Junya Sonoda
- Division of Cell Physiology, Department of Physiology and Cell biology, Graduate School of Medicine, Kobe University, Kobe, Japan
| | - Taro Ikeda
- Division of Cell Physiology, Department of Physiology and Cell biology, Graduate School of Medicine, Kobe University, Kobe, Japan.,Division of Gastrointestinal Surgery, Department of Surgery, Graduate School of Medicine, Kobe University, Kobe, Japan
| | - Yoshihiro Kakeji
- Division of Gastrointestinal Surgery, Department of Surgery, Graduate School of Medicine, Kobe University, Kobe, Japan
| | - Yasuhiro Minami
- Division of Cell Physiology, Department of Physiology and Cell biology, Graduate School of Medicine, Kobe University, Kobe, Japan
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32
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McCoy MG, Wei JM, Choi S, Goerger JP, Zipfel W, Fischbach C. Collagen Fiber Orientation Regulates 3D Vascular Network Formation and Alignment. ACS Biomater Sci Eng 2018; 4:2967-2976. [PMID: 33435017 DOI: 10.1021/acsbiomaterials.8b00384] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Alignment of collagen type I fibers is a hallmark of both physiological and pathological tissue remodeling. However, the effects of collagen fiber orientation on endothelial cell behavior and vascular network formation are poorly understood because of a lack of model systems that allow studying these potential functional connections. By casting collagen type I into prestrained (0, 10, 25, 50% strain), poly(dimethylsiloxane) (PDMS)-based microwells and releasing the mold strain following polymerization, we have created collagen gels with varying fiber alignment as confirmed by structural analysis. Endothelial cells embedded within the different gels responded to increased collagen fiber orientation by assembling into 3D vascular networks that consisted of thicker, more aligned branches and featured elevated collagen IV deposition and lumen formation relative to control conditions. These substrate-dependent changes in microvascular network formation were associated with altered cell division and migration patterns and related to enhanced mechanosignaling. Our studies indicate that collagen fiber alignment can directly regulate vascular network formation and that culture models with aligned collagen may be used to investigate the underlying mechanisms ultimately advancing our understanding of tissue development, homeostasis, and disease.
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Affiliation(s)
- Michael G McCoy
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Jane M Wei
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, New York 14853, United States.,Biological Sciences, Cornell University, Ithaca, New York 14853, United States
| | - Siyoung Choi
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Julian Palacios Goerger
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Warren Zipfel
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Claudia Fischbach
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, New York 14853, United States.,Kavli Institute at Cornell for Nanoscale Science, Cornell University, Ithaca, New York 14853, United States
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33
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A cell surface display fluorescent biosensor for measuring MMP14 activity in real-time. Sci Rep 2018; 8:5916. [PMID: 29651043 PMCID: PMC5897415 DOI: 10.1038/s41598-018-24080-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Accepted: 03/23/2018] [Indexed: 01/16/2023] Open
Abstract
Despite numerous recent advances in imaging technologies, one continuing challenge for cell biologists and microscopists is the visualization and measurement of endogenous proteins as they function within living cells. Achieving this goal will provide a tool that investigators can use to associate cellular outcomes with the behavior and activity of many well-studied target proteins. Here, we describe the development of a plasmid-based fluorescent biosensor engineered to measure the location and activity of matrix metalloprotease-14 (MMP14). The biosensor design uses fluorogen-activating protein technology coupled with a MMP14-selective protease sequence to generate a binary, “switch-on” fluorescence reporter capable of measuring MMP14 location, activity, and temporal dynamics. The MMP14-fluorogen activating protein biosensor approach is applicable to both short and long-term imaging modalities and contains an adaptable module that can be used to study many membrane-bound proteases. This MMP14 biosensor promises to serve as a tool for the advancement of a broad range of investigations targeting MMP14 activity during cell migration in health and disease.
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34
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Martin M, Veloso A, Wu J, Katrukha EA, Akhmanova A. Control of endothelial cell polarity and sprouting angiogenesis by non-centrosomal microtubules. eLife 2018; 7:33864. [PMID: 29547120 PMCID: PMC5898915 DOI: 10.7554/elife.33864] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2017] [Accepted: 03/13/2018] [Indexed: 12/11/2022] Open
Abstract
Microtubules control different aspects of cell polarization. In cells with a radial microtubule system, a pivotal role in setting up asymmetry is attributed to the relative positioning of the centrosome and the nucleus. Here, we show that centrosome loss had no effect on the ability of endothelial cells to polarize and move in 2D and 3D environments. In contrast, non-centrosomal microtubules stabilized by the microtubule minus-end-binding protein CAMSAP2 were required for directional migration on 2D substrates and for the establishment of polarized cell morphology in soft 3D matrices. CAMSAP2 was also important for persistent endothelial cell sprouting during in vivo zebrafish vessel development. In the absence of CAMSAP2, cell polarization in 3D could be partly rescued by centrosome depletion, indicating that in these conditions the centrosome inhibited cell polarity. We propose that CAMSAP2-protected non-centrosomal microtubules are needed for establishing cell asymmetry by enabling microtubule enrichment in a single-cell protrusion. Networks of blood vessels grow like trees. Sprouts appear on existing vessels, stretching out to form new branches in a process called angiogenesis. The cells responsible are the same cells that line the finished vessels. These “endothelial cells” start the process by reorganizing themselves to face the direction of the new sprout, changing shape to become asymmetrical, and then they begin to migrate. Beneath the surface, a network of protein scaffolding supports each migrating cell. The scaffolding includes tube-like fibers called microtubules that extend towards the cell membrane and organize the inside of the cell. Destroying microtubules damages blood vessel formation, but their exact role remains unclear. A structure called the centrosome can organize microtubules within cells. The centrosome was generally believed to act like a compass, pointing in the direction that the cell will move. Microtubules can anchor to the centrosome, and this structure is thought to play an important role in cell migration. Yet, many microtubules organize without it; these microtubules instead are organized by a compartment of the cell called the Golgi apparatus and are stabilized by a protein named CAMSAP2. Martin et al. now report that removing the cells’ centrosomes did not affect cell migration, but getting rid of CAMSAP2 did. Analysis of cell shape and movement in cells grown in the laboratory and in living animals revealed that cells cannot become asymmetrical, or “polarize”, and migrate without CAMSAP2. In a two-dimensional wound-healing assay, a sheet of cells originally grown from the vessels of a human umbilical cord was scratched, and a microscope was then used to record the cell’s movement as they repaired the injury. Normally, the cells on either side move in a straight line using their microtubules, and though the process was not affected in cells without centrosomes, it was in those without CAMSAP2. Even more striking results were seen in three-dimensional assays. When the same blood vessel cells from human umbilical cords are grown as spheres inside collagen gels, they form sprouts as they would in the body. Without CAMSAP2, the cells could not organize their microtubules and they were unable to elongate in one direction and form stable sprouts. Lastly, depleting CAMSAP2 also prevented the normal formation of blood vessels in zebrafish embryos. Taken together, these findings change our understanding of how microtubules affect cell movement and how important the centrosome is for this process. Further work could have an impact on human health, not least in cancer research. Tumors need a good blood supply to grow, so understanding how to block blood vessel formation could lead to new treatments. Microtubules are already a target for cancer therapy, so future work could help to optimize the use of existing drugs.
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Affiliation(s)
- Maud Martin
- Cell Biology, Department of Biology, Faculty of Science, Utrecht University, Utrecht, Netherlands
| | - Alexandra Veloso
- Interdisciplinary Cluster for Applied Genoproteomics, University of Liège, Liège, Belgium.,GIGA-Molecular Biology in Diseases, University of Liège, Liège, Belgium
| | - Jingchao Wu
- Cell Biology, Department of Biology, Faculty of Science, Utrecht University, Utrecht, Netherlands
| | - Eugene A Katrukha
- Cell Biology, Department of Biology, Faculty of Science, Utrecht University, Utrecht, Netherlands
| | - Anna Akhmanova
- Cell Biology, Department of Biology, Faculty of Science, Utrecht University, Utrecht, Netherlands
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35
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Loehr JA, Wang S, Cully TR, Pal R, Larina IV, Larin KV, Rodney GG. NADPH oxidase mediates microtubule alterations and diaphragm dysfunction in dystrophic mice. eLife 2018; 7:31732. [PMID: 29381135 PMCID: PMC5812717 DOI: 10.7554/elife.31732] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 01/20/2018] [Indexed: 12/18/2022] Open
Abstract
Skeletal muscle from mdx mice is characterized by increased Nox2 ROS, altered microtubule network, increased muscle stiffness, and decreased muscle/respiratory function. While microtubule de-tyrosination has been suggested to increase stiffness and Nox2 ROS production in isolated single myofibers, its role in altering tissue stiffness and muscle function has not been established. Because Nox2 ROS production is upregulated prior to microtubule network alterations and ROS affect microtubule formation, we investigated the role of Nox2 ROS in diaphragm tissue microtubule organization, stiffness and muscle/respiratory function. Eliminating Nox2 ROS prevents microtubule disorganization and reduces fibrosis and muscle stiffness in mdx diaphragm. Fibrosis accounts for the majority of variance in diaphragm stiffness and decreased function, implicating altered extracellular matrix and not microtubule de-tyrosination as a modulator of diaphragm tissue function. Ultimately, inhibiting Nox2 ROS production increased force and respiratory function in dystrophic diaphragm, establishing Nox2 as a potential therapeutic target in Duchenne muscular dystrophy.
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Affiliation(s)
- James Anthony Loehr
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, United States
| | - Shang Wang
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, United States
| | - Tanya R Cully
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, United States
| | - Rituraj Pal
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, United States
| | - Irina V Larina
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, United States
| | - Kirill V Larin
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, United States.,Department of Biomedical Engineering, University of Houston, Houston, United States.,Interdisciplinary Laboratory of Biophotonics, Tomsk State University, Tomsk, Russia
| | - George G Rodney
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, United States
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36
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Varol C, Sagi I. Phagocyte-extracellular matrix crosstalk empowers tumor development and dissemination. FEBS J 2017; 285:734-751. [DOI: 10.1111/febs.14317] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Revised: 10/01/2017] [Accepted: 10/31/2017] [Indexed: 12/15/2022]
Affiliation(s)
- Chen Varol
- The Research Center for Digestive Tract and Liver Diseases; Tel-Aviv Sourasky Medical Center; Sackler Faculty of Medicine; Tel-Aviv University; Israel
- Department of Clinical Microbiology and Immunology; Sackler Faculty of Medicine; Tel Aviv University; Israel
| | - Irit Sagi
- Department of Biological Regulation; Weizmann Institute of Science; Rehovot Israel
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37
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Myer NM, Myers KA. CLASP1 regulates endothelial cell branching morphology and directed migration. Biol Open 2017; 6:1502-1515. [PMID: 28860131 PMCID: PMC5665473 DOI: 10.1242/bio.028571] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Endothelial cell (EC) branching is critically dependent upon the dynamic nature of the microtubule (MT) cytoskeleton. Extracellular matrix (ECM) mechanosensing is a prominent mechanism by which cytoskeletal reorganization is achieved; yet how ECM-induced signaling is able to target cytoskeletal reorganization intracellularly to facilitate productive EC branching morphogenesis is not known. Here, we tested the hypothesis that the composition and density of the ECM drive the regulation of MT growth dynamics in ECs by targeting the MT stabilizing protein, cytoplasmic linker associated protein 1 (CLASP1). High-resolution fluorescent microscopy coupled with computational image analysis reveal that CLASP1 promotes slow MT growth on glass ECMs and promotes short-lived MT growth on high-density collagen-I and fibronectin ECMs. Within EC branches, engagement of either high-density collagen-I or high-density fibronectin ECMs results in reduced MT growth speeds, while CLASP1-dependent effects on MT dynamics promotes elevated numbers of short, branched protrusions that guide persistent and directed EC migration. Summary: CLASP1 modulates microtubule dynamics with sub-cellular specificity in response to extracellular matrix density and composition. CLASP1 effects on microtubules promote short, branched protrusions that guide persistent and directional EC migration. This article has an associated First Person interview with the first author of the paper as part of the supplementary information.
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Affiliation(s)
- Nicole M Myer
- Department of Biological Sciences, University of the Sciences in Philadelphia, Philadelphia PA 19104, USA
| | - Kenneth A Myers
- Department of Biological Sciences, University of the Sciences in Philadelphia, Philadelphia PA 19104, USA
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38
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Beroz F, Jawerth LM, Münster S, Weitz DA, Broedersz CP, Wingreen NS. Physical limits to biomechanical sensing in disordered fibre networks. Nat Commun 2017; 8:16096. [PMID: 28719577 PMCID: PMC5520107 DOI: 10.1038/ncomms16096] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Accepted: 05/26/2017] [Indexed: 12/13/2022] Open
Abstract
Cells actively probe and respond to the stiffness of their surroundings. Since mechanosensory cells in connective tissue are surrounded by a disordered network of biopolymers, their in vivo mechanical environment can be extremely heterogeneous. Here we investigate how this heterogeneity impacts mechanosensing by modelling the cell as an idealized local stiffness sensor inside a disordered fibre network. For all types of networks we study, including experimentally-imaged collagen and fibrin architectures, we find that measurements applied at different points yield a strikingly broad range of local stiffnesses, spanning roughly two decades. We verify via simulations and scaling arguments that this broad range of local stiffnesses is a generic property of disordered fibre networks. Finally, we show that to obtain optimal, reliable estimates of global tissue stiffness, a cell must adjust its size, shape, and position to integrate multiple stiffness measurements over extended regions of space. Cells in the connective tissue are surrounded by a heterogeneous network of biopolymers. Here, the authors investigate how such heterogeneity affects cellular mechanosensing by simulating the deformation response of experimental and modelled biopolymer networks to locally applied forces.
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Affiliation(s)
- Farzan Beroz
- Joseph Henry Laboratories of Physics, Princeton University, Princeton, New Jersey 08540, USA.,Arnold-Sommerfeld-Center for Theoretical Physics and Center for NanoScience, Ludwig-Maximilian University of Munich, Munich D-80333, Germany
| | - Louise M Jawerth
- Department of Biological Physics, Max Planck Institute for the Physics of Complex Systems, Dresden 01187, Germany.,Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA
| | - Stefan Münster
- Department of Biological Physics, Max Planck Institute for the Physics of Complex Systems, Dresden 01187, Germany.,School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, USA
| | - David A Weitz
- Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA.,School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, USA
| | - Chase P Broedersz
- Joseph Henry Laboratories of Physics, Princeton University, Princeton, New Jersey 08540, USA.,Arnold-Sommerfeld-Center for Theoretical Physics and Center for NanoScience, Ludwig-Maximilian University of Munich, Munich D-80333, Germany.,Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, New Jersey 08540, USA
| | - Ned S Wingreen
- Joseph Henry Laboratories of Physics, Princeton University, Princeton, New Jersey 08540, USA.,Department of Molecular Biology, Princeton University, Princeton, New Jersey 08540, USA
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39
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De Pascalis C, Etienne-Manneville S. Single and collective cell migration: the mechanics of adhesions. Mol Biol Cell 2017; 28:1833-1846. [PMID: 28684609 PMCID: PMC5541834 DOI: 10.1091/mbc.e17-03-0134] [Citation(s) in RCA: 214] [Impact Index Per Article: 30.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Revised: 05/30/2017] [Accepted: 06/02/2017] [Indexed: 12/11/2022] Open
Abstract
Chemical and physical properties of the environment control cell proliferation, differentiation, or apoptosis in the long term. However, to be able to move and migrate through a complex three-dimensional environment, cells must quickly adapt in the short term to the physical properties of their surroundings. Interactions with the extracellular matrix (ECM) occur through focal adhesions or hemidesmosomes via the engagement of integrins with fibrillar ECM proteins. Cells also interact with their neighbors, and this involves various types of intercellular adhesive structures such as tight junctions, cadherin-based adherens junctions, and desmosomes. Mechanobiology studies have shown that cell-ECM and cell-cell adhesions participate in mechanosensing to transduce mechanical cues into biochemical signals and conversely are responsible for the transmission of intracellular forces to the extracellular environment. As they migrate, cells use these adhesive structures to probe their surroundings, adapt their mechanical properties, and exert the appropriate forces required for their movements. The focus of this review is to give an overview of recent developments showing the bidirectional relationship between the physical properties of the environment and the cell mechanical responses during single and collective cell migration.
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Affiliation(s)
- Chiara De Pascalis
- Cell Polarity, Migration and Cancer Unit, Institut Pasteur Paris, CNRS UMR3691, 75724 Paris Cedex 15, France
- UPMC Université Paris 06, IFD, Sorbonne Universités, 75252 Paris Cedex 05, France
| | - Sandrine Etienne-Manneville
- Cell Polarity, Migration and Cancer Unit, Institut Pasteur Paris, CNRS UMR3691, 75724 Paris Cedex 15, France
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40
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D'Angelo L, Myer NM, Myers KA. MCAK-mediated regulation of endothelial cell microtubule dynamics is mechanosensitive to myosin-II contractility. Mol Biol Cell 2017; 28:1223-1237. [PMID: 28298485 PMCID: PMC5415018 DOI: 10.1091/mbc.e16-05-0306] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Revised: 02/21/2017] [Accepted: 02/24/2017] [Indexed: 01/16/2023] Open
Abstract
This study indicates that MCAK contributes to the mechanosensing-mediated regulation of MT dynamics through a myosin-II–dependent mechanism that becomes uncoupled in response to 3D ECM engagement specifically within EC branches. Compliance and dimensionality mechanosensing, the processes by which cells sense the physical attributes of the extracellular matrix (ECM), are known to drive cell branching and shape change largely through a myosin-II–mediated reorganization of the actin and microtubule (MT) cytoskeletons. Subcellular regulation of MT dynamics is spatially controlled through a Rac1–Aurora-A kinase pathway that locally inhibits the MT depolymerizing activity of mitotic centromere–associated kinesin (MCAK), thereby promoting leading-edge MT growth and cell polarization. These results suggest that the regulation of MT growth dynamics is intimately linked to physical engagement of the cell with the ECM. Here, we tested the hypothesis that MCAK contributes to compliance and dimensionality mechanosensing-mediated regulation of MT growth dynamics through a myosin-II–dependent signaling pathway. We cultured endothelial cells (ECs) on collagen-coupled stiff or compliant polyacrylamide ECMs to examine the effects of MCAK expression on MT growth dynamics and EC branching morphology. Our results identify that MCAK promotes fast MT growth speeds in ECs cultured on compliant 2D ECMs but promotes slow MT growth speeds in ECs cultured on compliant 3D ECMs, and these effects are myosin-II dependent. Furthermore, we find that 3D ECM engagement uncouples MCAK-mediated regulation of MT growth persistence from myosin-II–mediated regulation of growth persistence specifically within EC branched protrusions.
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Affiliation(s)
- Lauren D'Angelo
- Department of Biological Sciences, University of the Sciences in Philadelphia, Philadelphia, PA 19104
| | - Nicole M Myer
- Department of Biological Sciences, University of the Sciences in Philadelphia, Philadelphia, PA 19104
| | - Kenneth A Myers
- Department of Biological Sciences, University of the Sciences in Philadelphia, Philadelphia, PA 19104
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41
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Abstract
ABSTRACT
Three-dimensional (3D) cell motility underlies essential processes, such as embryonic development, tissue repair and immune surveillance, and is involved in cancer progression. Although the cytoskeleton is a well-studied regulator of cell migration, most of what we know about its functions originates from studies conducted in two-dimensional (2D) cultures. This research established that the microtubule network mediates polarized trafficking and signaling that are crucial for cell shape and movement in 2D. In parallel, developments in light microscopy and 3D cell culture systems progressively allowed to investigate cytoskeletal functions in more physiologically relevant settings. Interestingly, several studies have demonstrated that microtubule involvement in cell morphogenesis and motility can differ in 2D and 3D environments. In this Commentary, we discuss these differences and their relevance for the understanding the role of microtubules in cell migration in vivo. We also provide an overview of microtubule functions that were shown to control cell shape and motility in 3D matrices and discuss how they can be investigated further by using physiologically relevant models.
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Affiliation(s)
- Benjamin P. Bouchet
- Cell Biology, Department of Biology, Faculty of Science, Utrecht University, Padualaan 8, Utrecht 3584 CH, The Netherlands
| | - Anna Akhmanova
- Cell Biology, Department of Biology, Faculty of Science, Utrecht University, Padualaan 8, Utrecht 3584 CH, The Netherlands
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42
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Wang F, Guan X, Wu T, Qiao J, Han Z, Wu J, Yu X, You Q. Acellular Endocardium as a Novel Biomaterial for the Intima of Tissue-Engineered Small-Caliber Vascular Grafts. Artif Organs 2016; 40:E253-E265. [DOI: 10.1111/aor.12814] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2015] [Revised: 05/09/2016] [Accepted: 07/06/2016] [Indexed: 12/14/2022]
Affiliation(s)
- Feng Wang
- Department of Cardiothoracic Surgery; Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; Shanghai
| | - Xin Guan
- Department of Cardiothoracic Surgery; Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; Shanghai
| | - TianYi Wu
- Department of Orthopaedics & Traumatology, Faculty of Medicine; Chinese University of Hong Kong, Prince of Wales Hospital; Hong Kong
| | - JianOu Qiao
- Department of Respiratory Medicine; Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine
| | - ZhaoQing Han
- Department of Respiratory Medicine; Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine
| | - JinLong Wu
- Department of Cardiothoracic Surgery; Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; Shanghai
| | - XiaoWei Yu
- Department of Orthopaedic Surgery; Shanghai Jiao Tong University Affiliated Sixth People's Hospital; Shanghai
| | - QingJun You
- Department of Thoracic and Cardiovascular Surgery; Affiliated Hospital of Jiangnan University; Wuxi China
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43
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Kaushik S, Pickup MW, Weaver VM. From transformation to metastasis: deconstructing the extracellular matrix in breast cancer. Cancer Metastasis Rev 2016; 35:655-667. [PMID: 27914000 PMCID: PMC5215979 DOI: 10.1007/s10555-016-9650-0] [Citation(s) in RCA: 106] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The extracellular matrix (ECM) is a guiding force that regulates various developmental stages of the breast. In addition to providing structural support for the cells, it mediates epithelial-stromal communication and provides cues for cell survival, proliferation, and differentiation. Perturbations in ECM architecture profoundly influence breast tumor progression and metastasis. Understanding how a dysregulated ECM can facilitate malignant transformation is crucial to designing treatments to effectively target the tumor microenvironment. Here, we address the contribution of ECM mechanics to breast cancer progression, metastasis, and treatment resistance and discuss potential therapeutic strategies targeting the ECM.
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Affiliation(s)
- Shelly Kaushik
- Center for Bioengineering and Tissue Regeneration, Department of Surgery, UCSF, San Francisco, CA, USA
| | - Michael W Pickup
- Center for Bioengineering and Tissue Regeneration, Department of Surgery, UCSF, San Francisco, CA, USA
| | - Valerie M Weaver
- Center for Bioengineering and Tissue Regeneration, Department of Surgery, UCSF, San Francisco, CA, USA.
- Department of Anatomy, UCSF, San Francisco, CA, USA.
- Department of Bioengineering and Therapeutic Sciences, UCSF, San Francisco, CA, USA.
- Department of Radiation Oncology, UCSF, San Francisco, CA, USA.
- UCSF Helen Diller Comprehensive Cancer Center, UCSF, San Francisco, CA, USA.
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, UCSF, San Francisco, CA, USA.
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44
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Braun A, Caesar NM, Dang K, Myers KA. High-resolution Time-lapse Imaging and Automated Analysis of Microtubule Dynamics in Living Human Umbilical Vein Endothelial Cells. J Vis Exp 2016. [PMID: 27584860 PMCID: PMC5091855 DOI: 10.3791/54265] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
The physiological process by which new vasculature forms from existing vasculature requires specific signaling events that trigger morphological changes within individual endothelial cells (ECs). These processes are critical for homeostatic maintenance such as wound healing, and are also crucial in promoting tumor growth and metastasis. EC morphology is defined by the organization of the cytoskeleton, a tightly regulated system of actin and microtubule (MT) dynamics that is known to control EC branching, polarity and directional migration, essential components of angiogenesis. To study MT dynamics, we used high-resolution fluorescence microscopy coupled with computational image analysis of fluorescently-labeled MT plus-ends to investigate MT growth dynamics and the regulation of EC branching morphology and directional migration. Time-lapse imaging of living Human Umbilical Vein Endothelial Cells (HUVECs) was performed following transfection with fluorescently-labeled MT End Binding protein 3 (EB3) and Mitotic Centromere Associated Kinesin (MCAK)-specific cDNA constructs to evaluate effects on MT dynamics. PlusTipTracker software was used to track EB3-labeled MT plus ends in order to measure MT growth speeds and MT growth lifetimes in time-lapse images. This methodology allows for the study of MT dynamics and the identification of how localized regulation of MT dynamics within sub-cellular regions contributes to the angiogenic processes of EC branching and migration.
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Affiliation(s)
- Alexander Braun
- Department of Biological Sciences, University of the Sciences in Philadelphia
| | - Nicole M Caesar
- Department of Biological Sciences, University of the Sciences in Philadelphia
| | - Kyvan Dang
- Department of Biological Sciences, University of the Sciences in Philadelphia
| | - Kenneth A Myers
- Department of Biological Sciences, University of the Sciences in Philadelphia;
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45
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Navis A, Nelson CM. Pulling together: Tissue-generated forces that drive lumen morphogenesis. Semin Cell Dev Biol 2016; 55:139-47. [PMID: 26778757 PMCID: PMC4903947 DOI: 10.1016/j.semcdb.2016.01.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2015] [Accepted: 01/05/2016] [Indexed: 12/20/2022]
Abstract
Mechanical interactions are essential for bending and shaping tissues during morphogenesis. A common feature of nearly all internal organs is the formation of a tubular network consisting of an epithelium that surrounds a central lumen. Lumen formation during organogenesis requires precisely coordinated mechanical and biochemical interactions. Whereas many genetic regulators of lumen formation have been identified, relatively little is known about the mechanical cues that drive lumen morphogenesis. Lumens can be shaped by a variety of physical behaviors including wrapping a sheet of cells around a hollow core, rearranging cells to expose a lumenal cavity, or elongating a tube via cell migration, though many of the details underlying these movements remain poorly understood. It is essential to define how forces generated by individual cells cooperate to produce the tissue-level forces that drive organogenesis. Transduction of mechanical forces relies on several conserved processes including the contraction of cytoskeletal networks or expansion of lumens through increased fluid pressure. The morphogenetic events that drive lumen formation serve as a model for similar mechanical processes occurring throughout development. To understand how lumenal networks arise, it will be essential to investigate how biochemical and mechanical processes integrate to generate complex structures from comparatively simple interactions.
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Affiliation(s)
- Adam Navis
- Department of Chemical & Biological Engineering, Princeton University, Princeton, NJ 08544, United States
| | - Celeste M Nelson
- Department of Chemical & Biological Engineering, Princeton University, Princeton, NJ 08544, United States; Department of Molecular Biology, Princeton University, Princeton, NJ 08544, United States.
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46
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Serbo JV, Kuo S, Lewis S, Lehmann M, Li J, Gracias DH, Romer LH. Patterning of Fibroblast and Matrix Anisotropy within 3D Confinement is Driven by the Cytoskeleton. Adv Healthc Mater 2016; 5:146-58. [PMID: 26033825 PMCID: PMC5817161 DOI: 10.1002/adhm.201500030] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2015] [Revised: 05/12/2015] [Indexed: 12/16/2022]
Abstract
Effects of 3D confinement on cellular growth and matrix assembly are important in tissue engineering, developmental biology, and regenerative medicine. Polydimethylsiloxane wells with varying anisotropy are microfabicated using soft-lithography. Microcontact printing of bovine serum albumin is used to block cell adhesion to surfaces between wells. The orientations of fibroblast stress fibers, microtubules, and fibronectin fibrils are examined 1 day after cell seeding using laser scanning confocal microscopy, and anisotropy is quantified using a custom autocorrelation analysis. Actin, microtubules, and fibronectin exhibit higher anisotropy coefficients for cells grown in rectangular wells with aspect ratios of 1:4 and 1:8, as compared to those in wells with lower aspect ratios or in square wells. The effects of disabling individual cytoskeletal components on fibroblast responses to anisotropy are then tested by applying actin or microtubule polymerization inhibitors, Rho kinase inhibitor, or by siRNA-mediated knockdown of AXL or cofilin-1. Latrunculin A decreases cytoskeletal and matrix anisotropy, nocodazole ablates both, and Y27632 mutes cellular polarity while decreasing matrix anisotropy. AXL siRNA knockdown has little effect, as does siRNA knockdown of cofilin-1. These data identify several specific cytoskeletal strategies as targets for the manipulation of anisotropy in 3D tissue constructs.
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Affiliation(s)
- Janna V. Serbo
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Scot Kuo
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Department of Cell Biology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Shawna Lewis
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Matthew Lehmann
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD, USA
| | - Jiuru Li
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD, USA
| | - David H. Gracias
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD, USA
- Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, MD, USA
| | - Lewis H. Romer
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Department of Cell Biology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Center for Cell Dynamics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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47
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Quintin S, Wang S, Pontabry J, Bender A, Robin F, Hyenne V, Landmann F, Gally C, Oegema K, Labouesse M. Non-centrosomal epidermal microtubules act in parallel to LET-502/ROCK to promote C. elegans elongation. Development 2015; 143:160-73. [PMID: 26586219 PMCID: PMC6514414 DOI: 10.1242/dev.126615] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Accepted: 11/10/2015] [Indexed: 12/11/2022]
Abstract
C. elegans embryonic elongation is a morphogenetic event driven by actomyosin contractility and muscle-induced tension transmitted through hemidesmosomes. A role for the microtubule cytoskeleton has also been proposed, but its contribution remains poorly characterized. Here, we investigate the organization of the non-centrosomal microtubule arrays present in the epidermis and assess their function in elongation. We show that the microtubule regulators γ-tubulin and NOCA-1 are recruited to hemidesmosomes and adherens junctions early in elongation. Several parallel approaches suggest that microtubule nucleation occurs from these sites. Disrupting the epidermal microtubule array by overexpressing the microtubule-severing protein Spastin or by inhibiting the C. elegans ninein homolog NOCA-1 in the epidermis mildly affected elongation. However, microtubules were essential for elongation when hemidesmosomes or the activity of the Rho kinase LET-502/ROCK were partially compromised. Imaging of junctional components and genetic analyses suggest that epidermal microtubules function together with Rho kinase to promote the transport of E-cadherin to adherens junctions and myotactin to hemidesmosomes. Our results indicate that the role of LET-502 in junctional remodeling is likely to be independent of its established function as a myosin II activator, but requires a microtubule-dependent pathway involving the syntaxin SYX-5. Hence, we propose that non-centrosomal microtubules organized by epidermal junctions contribute to elongation by transporting junction remodeling factors, rather than having a mechanical role. Summary: During C. elegans embryonic elongation, microtubules nucleate at adjerens junctions and hemidesmosomes, and are important for the transport of junctional proteins.
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Affiliation(s)
- Sophie Quintin
- IGBMC - CNRS UMR 7104 - INSERM U964 - Université de Strasbourg, 1 rue Laurent Fries, BP 10142, Illkirch 67404, Cedex, France
| | - Shahoe Wang
- Ludwig Institute for Cancer Research, Department of Cellular and Molecular Medicine, University of California, San Diego, La Jolla, CA 92037, USA
| | - Julien Pontabry
- IGBMC - CNRS UMR 7104 - INSERM U964 - Université de Strasbourg, 1 rue Laurent Fries, BP 10142, Illkirch 67404, Cedex, France
| | - Ambre Bender
- IGBMC - CNRS UMR 7104 - INSERM U964 - Université de Strasbourg, 1 rue Laurent Fries, BP 10142, Illkirch 67404, Cedex, France
| | - François Robin
- Institut de Biologie Paris Seine, IBPS FR3631, Université Pierre et Marie Curie, 7-9 Quai Saint Bernard, Paris 75005, France
| | - Vincent Hyenne
- IGBMC - CNRS UMR 7104 - INSERM U964 - Université de Strasbourg, 1 rue Laurent Fries, BP 10142, Illkirch 67404, Cedex, France
| | - Frédéric Landmann
- IGBMC - CNRS UMR 7104 - INSERM U964 - Université de Strasbourg, 1 rue Laurent Fries, BP 10142, Illkirch 67404, Cedex, France
| | - Christelle Gally
- IGBMC - CNRS UMR 7104 - INSERM U964 - Université de Strasbourg, 1 rue Laurent Fries, BP 10142, Illkirch 67404, Cedex, France
| | - Karen Oegema
- Ludwig Institute for Cancer Research, Department of Cellular and Molecular Medicine, University of California, San Diego, La Jolla, CA 92037, USA
| | - Michel Labouesse
- IGBMC - CNRS UMR 7104 - INSERM U964 - Université de Strasbourg, 1 rue Laurent Fries, BP 10142, Illkirch 67404, Cedex, France Institut de Biologie Paris Seine, IBPS FR3631, Université Pierre et Marie Curie, 7-9 Quai Saint Bernard, Paris 75005, France
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48
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Ali S, Wall IB, Mason C, Pelling AE, Veraitch FS. The effect of Young's modulus on the neuronal differentiation of mouse embryonic stem cells. Acta Biomater 2015; 25:253-267. [PMID: 26159105 DOI: 10.1016/j.actbio.2015.07.008] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2014] [Revised: 05/27/2015] [Accepted: 07/05/2015] [Indexed: 12/15/2022]
Abstract
There is substantial evidence that cells produce a diverse response to changes in ECM stiffness depending on their identity. Our aim was to understand how stiffness impacts neuronal differentiation of embryonic stem cells (ESC's), and how this varies at three specific stages of the differentiation process. In this investigation, three effects of stiffness on cells were considered; attachment, expansion and phenotypic changes during differentiation. Stiffness was varied from 2 kPa to 18 kPa to finally 35 kPa. Attachment was found to decrease with increasing stiffness for both ESC's (with a 95% decrease on 35 kPa compared to 2 kPa) and neural precursors (with a 83% decrease on 35 kPa). The attachment of immature neurons was unaffected by stiffness. Expansion was independent of stiffness for all cell types, implying that the proliferation of cells during this differentiation process was independent of Young's modulus. Stiffness had no effect upon phenotypic changes during differentiation for mESC's and neural precursors. 2 kPa increased the proportion of cells that differentiated from immature into mature neurons. Taken together our findings imply that the impact of Young's modulus on attachment diminishes as neuronal cells become more mature. Conversely, the impact of Young's modulus on changes in phenotype increased as cells became more mature.
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49
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Wright CE, Kushner EJ, Du Q, Bautch VL. LGN Directs Interphase Endothelial Cell Behavior via the Microtubule Network. PLoS One 2015; 10:e0138763. [PMID: 26398908 PMCID: PMC4580422 DOI: 10.1371/journal.pone.0138763] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Accepted: 09/03/2015] [Indexed: 12/24/2022] Open
Abstract
Angiogenic sprouts require coordination of endothelial cell (EC) behaviors as they extend and branch. Microtubules influence behaviors such as cell migration and cell-cell interactions via regulated growth and shrinkage. Here we investigated the role of the mitotic polarity protein LGN in EC behaviors and sprouting angiogenesis. Surprisingly, reduced levels of LGN did not affect oriented division of EC within a sprout, but knockdown perturbed overall sprouting. At the cell level, LGN knockdown compromised cell-cell adhesion and migration. EC with reduced LGN levels also showed enhanced growth and stabilization of microtubules that correlated with perturbed migration. These results fit a model whereby LGN influences interphase microtubule dynamics in endothelial cells to regulate migration, cell adhesion, and sprout extension, and reveal a novel non-mitotic role for LGN in sprouting angiogenesis.
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Affiliation(s)
- Catherine E. Wright
- Curriculum in Genetics and Molecular Biology, University of North Carolina, Chapel Hill, North Carolina, United States of America
| | - Erich J. Kushner
- Department of Biology, University of North Carolina, Chapel Hill, North Carolina, United States of America
| | - Quansheng Du
- Department of Neurology, Institute of Molecular Medicine and Genetics, Georgia Regents University, Augusta, Georgia, United States of America
| | - Victoria L. Bautch
- Curriculum in Genetics and Molecular Biology, University of North Carolina, Chapel Hill, North Carolina, United States of America
- Department of Biology, University of North Carolina, Chapel Hill, North Carolina, United States of America
- McAllister Heart Institute, University of North Carolina, Chapel Hill, North Carolina, United States of America
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, North Carolina, United States of America
- * E-mail:
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50
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Schardt L, Ander JJ, Lohmann I, Papagiannouli F. Stage-specific control of niche positioning and integrity in the Drosophila testis. Mech Dev 2015; 138 Pt 3:336-48. [PMID: 26226434 DOI: 10.1016/j.mod.2015.07.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Revised: 06/23/2015] [Accepted: 07/24/2015] [Indexed: 12/11/2022]
Abstract
A fundamental question is how complex structures are maintained after their initial specification. Stem cells reside in a specialized microenvironment, called niche, which provides essential signals controlling stem cell behavior. We addressed this question by studying the Drosophila male stem cell niche, called the hub. Once specified, the hub cells need to maintain their position and architectural integrity through embryonic, larval and pupal stages of testis organogenesis and during adult life. The Hox gene Abd-B, in addition to its described role in male embryonic gonads, maintains the architecture and positioning of the larval hub from the germline by affecting integrin localization in the neighboring somatic cyst cells. We find that the AbdB-Boss/Sev cascade affects integrin independent of Talin, while genetic interactions depict integrin as the central downstream player in this system. Focal adhesion and integrin-adaptor proteins within the somatic stem cells and cyst cells, such as Paxillin, Pinch and Vav, also contribute to proper hub integrity and positioning. During adult stages, hub positioning is controlled by Abd-B activity in the outer acto-myosin sheath, while Abd-B expression in adult spermatocytes exerts no effect on hub positioning and integrin localization. Our data point at a cell- and stage-specific function of Abd-B and suggest that the occurrence of new cell types and cell interactions in the course of testis organogenesis made it necessary to adapt the whole system by reusing the same players for male stem cell niche positioning and integrity in an alternative manner.
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Affiliation(s)
- Lisa Schardt
- Centre for Organismal Studies (COS) Heidelberg, Cell Networks - Cluster of Excellence, University of Heidelberg, D-69120, Germany; Deutsches Krebsforschungszentrum (DKFZ), D-69120, Germany
| | - Janina-Jacqueline Ander
- Centre for Organismal Studies (COS) Heidelberg, Cell Networks - Cluster of Excellence, University of Heidelberg, D-69120, Germany
| | - Ingrid Lohmann
- Centre for Organismal Studies (COS) Heidelberg, Cell Networks - Cluster of Excellence, University of Heidelberg, D-69120, Germany.
| | - Fani Papagiannouli
- Centre for Organismal Studies (COS) Heidelberg, Cell Networks - Cluster of Excellence, University of Heidelberg, D-69120, Germany.
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