1
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Thien ND, Hai-Nam N, Anh DT, Baecker D. Piezo1 and its inhibitors: Overview and perspectives. Eur J Med Chem 2024; 273:116502. [PMID: 38761789 DOI: 10.1016/j.ejmech.2024.116502] [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: 04/05/2024] [Revised: 05/11/2024] [Accepted: 05/13/2024] [Indexed: 05/20/2024]
Abstract
The cation channel Piezo1, a crucial mechanotransducer found in various organs and tissues, has gained considerable attention as a therapeutic target in recent years. Following this trend, several Piezo1 inhibitors have been discovered and studied for potential pharmacological properties. This review provides an overview of the structural and functional importance of Piezo1, as well as discussing the biological activities of Piezo1 inhibitors based on their mechanism of action. The compounds addressed include the toxin GsMTx4, Aβ peptides, certain fatty acids, ruthenium red and gadolinium, Dooku1, as well as the natural products tubeimoside I, salvianolic acid B, jatrorrhzine, and escin. The findings revealed that misexpression of Piezo1 can be associated with a number of chronic diseases, including hypertension, cancer, and hemolytic anemia. Consequently, inhibiting Piezo1 and the subsequent calcium influx can have beneficial effects on various pathological processes, as shown by many in vitro and in vivo studies. However, the development of Piezo1 inhibitors is still in its beginnings, with many opportunities and challenges remaining to be explored.
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Affiliation(s)
- Nguyen Duc Thien
- Hanoi University of Pharmacy, 13-15 Le Thanh Tong, Hanoi, 100000, Viet Nam
| | - Nguyen Hai-Nam
- Hanoi University of Pharmacy, 13-15 Le Thanh Tong, Hanoi, 100000, Viet Nam
| | - Duong Tien Anh
- Hanoi University of Pharmacy, 13-15 Le Thanh Tong, Hanoi, 100000, Viet Nam.
| | - Daniel Baecker
- Department of Pharmaceutical and Medicinal Chemistry, Institute of Pharmacy, Freie Universität Berlin, Königin-Luise-Straße 2+4, Berlin, 14195, Germany.
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2
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Martín-Sanz R, Rodrigues-Françoso A, García-Mesa Y, García-Alonso FJ, Gómez-Muñoz MA, Malmierca-González S, Salazar-Blázquez R, García-Suárez O, Feito J. Prognostic Evaluation of Piezo2 Channels in Mammary Gland Carcinoma. Cancers (Basel) 2024; 16:2413. [PMID: 39001475 PMCID: PMC11240440 DOI: 10.3390/cancers16132413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2024] [Revised: 06/26/2024] [Accepted: 06/28/2024] [Indexed: 07/16/2024] Open
Abstract
In the last decade, a group of Ca2+ channels called Piezo were discovered, demonstrating a decisive role in the cellular response to mechanical stimuli and being essential in the biological behavior of cells regarding the extracellular compartment. Several investigations have suggested a potential role in carcinogenesis, with a tumor suppressor role in some cases but increased expression in several high-grade neoplasms. Regarding Piezo2 expression in mammary gland neoplasms, a protective role for Piezo2 was initially suggested, but a subsequent study demonstrated a relationship between Piezo2 expression and the highly aggressive triple-negative phenotype of breast carcinoma. A cohort of 125 patients with clinical follow-up was chosen to study Piezo2 expression and clarify its clinical implications using the same immunohistochemical evaluation performed for other breast carcinoma parameters. Fisher's exact test was chosen to identify potential relationships between the different variables. A significant association was found with the Ki67 proliferation index, but not with mitoses. The tendency of most proliferative tumors was to have an increased score for Piezo2. A similar association was found between Piezo2 expression and perineural invasion.
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Affiliation(s)
- Raquel Martín-Sanz
- Instituto de Investigación Biomédica de Salamanca (IBSAL), 37007 Salamanca, Spain; (R.M.-S.); (S.M.-G.)
- Servicio de Oftalmología, Complejo Asistencial de Zamora, 49022 Zamora, Spain
| | | | - Yolanda García-Mesa
- Grupo SINPOS, Department of Cell Biology and Morphology, University of Oviedo, 33003 Oviedo, Spain; (Y.G.-M.); (O.G.-S.)
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Spain
| | | | - María Asunción Gómez-Muñoz
- Servicio de Anatomía Patológica, Complejo Asistencial Universitario de Salamanca, 37007 Salamanca, Spain; (M.A.G.-M.); (R.S.-B.)
| | - Sandra Malmierca-González
- Instituto de Investigación Biomédica de Salamanca (IBSAL), 37007 Salamanca, Spain; (R.M.-S.); (S.M.-G.)
- Servicio de Anatomía Patológica, Complejo Asistencial Universitario de Salamanca, 37007 Salamanca, Spain; (M.A.G.-M.); (R.S.-B.)
| | - Rocío Salazar-Blázquez
- Servicio de Anatomía Patológica, Complejo Asistencial Universitario de Salamanca, 37007 Salamanca, Spain; (M.A.G.-M.); (R.S.-B.)
| | - Olivia García-Suárez
- Grupo SINPOS, Department of Cell Biology and Morphology, University of Oviedo, 33003 Oviedo, Spain; (Y.G.-M.); (O.G.-S.)
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Spain
| | - Jorge Feito
- Instituto de Investigación Biomédica de Salamanca (IBSAL), 37007 Salamanca, Spain; (R.M.-S.); (S.M.-G.)
- Servicio de Anatomía Patológica, Complejo Asistencial Universitario de Salamanca, 37007 Salamanca, Spain; (M.A.G.-M.); (R.S.-B.)
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3
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Budde I, Schlichting A, Ing D, Schimmelpfennig S, Kuntze A, Fels B, Romac JMJ, Swain SM, Liddle RA, Stevens A, Schwab A, Pethő Z. Piezo1-induced durotaxis of pancreatic stellate cells depends on TRPC1 and TRPV4 channels. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2023.12.22.572956. [PMID: 38187663 PMCID: PMC10769407 DOI: 10.1101/2023.12.22.572956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2024]
Abstract
Pancreatic stellate cells (PSCs) are primarily responsible for producing the stiff tumor tissue in pancreatic ductal adenocarcinoma (PDAC). Thereby, PSCs generate a stiffness gradient between the healthy pancreas and the tumor. This gradient induces durotaxis, a form of directional cell migration driven by differential stiffness. The molecular sensors behind durotaxis are still unclear. To investigate the role of mechanosensitive ion channels in PSC durotaxis, we established a two-dimensional stiffness gradient mimicking PDAC. Using pharmacological and genetic methods, we investigated the role of the ion channels Piezo1, TRPC1, and TRPV4 in PSC durotaxis. We found that PSC migration towards a stiffer substrate is diminished by altering Piezo1 activity. Moreover, disrupting TRPC1 along with TRPV4 abolishes PSC durotaxis even when Piezo1 is functional. Hence, PSC durotaxis is optimal with an intermediary level of mechanosensitive channel activity, which we simulated using a numerically discretized mathematical model. Our findings suggest that mechanosensitive ion channels, particularly Piezo1, detect the mechanical microenvironment to guide PSC migration.
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Affiliation(s)
- Ilka Budde
- Institute of Physiology II, University of Münster, Robert-Koch Str. 27B, 48149, Germany
| | - André Schlichting
- Institute for Analysis and Numerics, University of Münster, Einsteinstr. 62, 48149, Germany
| | - David Ing
- Institute of Physiology II, University of Münster, Robert-Koch Str. 27B, 48149, Germany
| | | | - Anna Kuntze
- Institute of Physiology II, University of Münster, Robert-Koch Str. 27B, 48149, Germany
- Gerhard-Domagk-Institute of Pathology, University of Münster; Münster, Germany
| | - Benedikt Fels
- Institute of Physiology II, University of Münster, Robert-Koch Str. 27B, 48149, Germany
- Institute of Physiology, University of Lübeck; Lübeck, Germany
| | - Joelle M-J Romac
- Department of Medicine, Duke University, Durham, North Carolina, 27708, USA
| | - Sandip M Swain
- Department of Medicine, Duke University, Durham, North Carolina, 27708, USA
| | - Rodger A Liddle
- Department of Medicine, Duke University, Durham, North Carolina, 27708, USA
| | - Angela Stevens
- Institute for Analysis and Numerics, University of Münster, Einsteinstr. 62, 48149, Germany
| | - Albrecht Schwab
- Institute of Physiology II, University of Münster, Robert-Koch Str. 27B, 48149, Germany
| | - Zoltán Pethő
- Institute of Physiology II, University of Münster, Robert-Koch Str. 27B, 48149, Germany
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4
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Ai LJ, Li GD, Chen G, Sun ZQ, Zhang JN, Liu M. Molecular subtyping and the construction of a predictive model of colorectal cancer based on ion channel genes. Eur J Med Res 2024; 29:219. [PMID: 38576045 PMCID: PMC10993535 DOI: 10.1186/s40001-024-01819-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 03/29/2024] [Indexed: 04/06/2024] Open
Abstract
PURPOSE Colorectal cancer (CRC) is a highly heterogeneous malignancy with an unfavorable prognosis. The purpose of this study was to address the heterogeneity of CRC by categorizing it into ion channel subtypes, and to develop a predictive modeling based on ion channel genes to predict the survival and immunological states of patients with CRC. The model will provide guidance for personalized immunotherapy and drug treatment. METHODS A consistent clustering method was used to classify 619 CRC samples based on the expression of 279 ion channel genes. Such a method was allowed to investigate the relationship between molecular subtypes, prognosis, and immune infiltration. Furthermore, a predictive modeling was constructed for ion channels to evaluate the ion channel properties of individual tumors using the least absolute shrinkage and selection operator. The expression patterns of the characteristic genes were validated through molecular biology experiments. The effect of potassium channel tetramerization domain containing 9 (KCTD9) on CRC was verified by cellular functional experiments. RESULTS Four distinct ion channel subtypes were identified in CRC, each characterized by unique prognosis and immune infiltration patterns. Notably, Ion Cluster3 exhibited high levels of immune infiltration and a favorable prognosis, while Ion Cluster4 showed relatively lower levels of immune infiltration and a poorer prognosis. The ion channel score could predict overall survival, with lower scores correlated with longer survival. This score served as an independent prognostic factor and presented an excellent predictive efficacy in the nomogram. In addition, the score was closely related to immune infiltration, immunotherapy response, and chemotherapy sensitivity. Experimental evidence further confirmed that low expression of KCTD9 in tumor tissues was associated with an unfavorable prognosis in patients with CRC. The cellular functional experiments demonstrated that KCTD9 inhibited the proliferation, migration and invasion capabilities of LOVO cells. CONCLUSIONS Ion channel subtyping and scoring can effectively predict the prognosis and evaluate the immune microenvironment, immunotherapy response, and drug sensitivity in patients with CRC.
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Affiliation(s)
- Lian-Jie Ai
- Colorectal Tumor Surgery, The 2nd Affiliated Hospital of Harbin Medical University, Harbin, 150001, Heilongjiang, China
| | - Guo-Dong Li
- General Surgery, The 4th Affiliated Hospital of Harbin Medical University, Harbin, 150001, Heilongjiang, China
| | - Gang Chen
- General Surgery, The 4th Affiliated Hospital of Harbin Medical University, Harbin, 150001, Heilongjiang, China
| | - Zi-Quan Sun
- Colorectal Tumor Surgery, The 2nd Affiliated Hospital of Harbin Medical University, Harbin, 150001, Heilongjiang, China
| | - Jin-Ning Zhang
- Colorectal Tumor Surgery, The 2nd Affiliated Hospital of Harbin Medical University, Harbin, 150001, Heilongjiang, China
| | - Ming Liu
- General Surgery, The 4th Affiliated Hospital of Harbin Medical University, Harbin, 150001, Heilongjiang, China.
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5
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Guerrero-Ochoa P, Rodríguez-Zapater S, Anel A, Esteban LM, Camón-Fernández A, Espilez-Ortiz R, Gil-Sanz MJ, Borque-Fernando Á. Prostate Cancer and the Mevalonate Pathway. Int J Mol Sci 2024; 25:2152. [PMID: 38396837 PMCID: PMC10888820 DOI: 10.3390/ijms25042152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 02/04/2024] [Accepted: 02/07/2024] [Indexed: 02/25/2024] Open
Abstract
Antineoplastic therapies for prostate cancer (PCa) have traditionally centered around the androgen receptor (AR) pathway, which has demonstrated a significant role in oncogenesis. Nevertheless, it is becoming progressively apparent that therapeutic strategies must diversify their focus due to the emergence of resistance mechanisms that the tumor employs when subjected to monomolecular treatments. This review illustrates how the dysregulation of the lipid metabolic pathway constitutes a survival strategy adopted by tumors to evade eradication efforts. Integrating this aspect into oncological management could prove valuable in combating PCa.
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Affiliation(s)
- Patricia Guerrero-Ochoa
- Health Research Institute of Aragon Foundation, 50009 Zaragoza, Spain; (P.G.-O.); (A.C.-F.); (R.E.-O.); (M.J.G.-S.)
| | - Sergio Rodríguez-Zapater
- Minimally Invasive Research Group (GITMI), Faculty of Veterinary Medicine, University of Zaragoza, 50009 Zaragoza, Spain;
| | - Alberto Anel
- Department of Biochemistry and Molecular and Cellular Biology, Faculty of Sciences, University of Zaragoza, 50009 Zaragoza, Spain;
| | - Luis Mariano Esteban
- Department of Applied Mathematics, Escuela Universitaria Politécnica de La Almunia, Institute for Biocomputation and Physic of Complex Systems, Universidad de Zaragoza, 50100 La Almunia de Doña Godina, Spain
| | - Alejandro Camón-Fernández
- Health Research Institute of Aragon Foundation, 50009 Zaragoza, Spain; (P.G.-O.); (A.C.-F.); (R.E.-O.); (M.J.G.-S.)
| | - Raquel Espilez-Ortiz
- Health Research Institute of Aragon Foundation, 50009 Zaragoza, Spain; (P.G.-O.); (A.C.-F.); (R.E.-O.); (M.J.G.-S.)
- Department of Urology, Miguel Servet University Hospital, 50009 Zaragoza, Spain
- Area of Urology, Department of Surgery, Faculty of Medicine, University of Zaragoza, 50009 Zaragoza, Spain
| | - María Jesús Gil-Sanz
- Health Research Institute of Aragon Foundation, 50009 Zaragoza, Spain; (P.G.-O.); (A.C.-F.); (R.E.-O.); (M.J.G.-S.)
- Department of Urology, Miguel Servet University Hospital, 50009 Zaragoza, Spain
| | - Ángel Borque-Fernando
- Health Research Institute of Aragon Foundation, 50009 Zaragoza, Spain; (P.G.-O.); (A.C.-F.); (R.E.-O.); (M.J.G.-S.)
- Department of Applied Mathematics, Escuela Universitaria Politécnica de La Almunia, Institute for Biocomputation and Physic of Complex Systems, Universidad de Zaragoza, 50100 La Almunia de Doña Godina, Spain
- Department of Urology, Miguel Servet University Hospital, 50009 Zaragoza, Spain
- Area of Urology, Department of Surgery, Faculty of Medicine, University of Zaragoza, 50009 Zaragoza, Spain
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6
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Song J, Zeng X, Li C, Yin H, Mao S, Ren D. Alteration in cartilage matrix stiffness as an indicator and modulator of osteoarthritis. Biosci Rep 2024; 44:BSR20231730. [PMID: 38014522 PMCID: PMC10794814 DOI: 10.1042/bsr20231730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 11/22/2023] [Accepted: 11/24/2023] [Indexed: 11/29/2023] Open
Abstract
Osteoarthritis (OA) is characterized by cartilage degeneration and destruction, leading to joint ankylosis and disability. The major challenge in diagnosing OA at early stage is not only lack of clinical symptoms but also the insufficient histological and immunohistochemical signs. Alteration in cartilage stiffness during OA progression, especially at OA initiation, has been confirmed by growing evidences. Moreover, the stiffness of cartilage extracellular matrix (ECM), pericellular matrix (PCM) and chondrocytes during OA development are dynamically changed in unique and distinct fashions, revealing possibly inconsistent conclusions when detecting cartilage matrix stiffness at different locations and scales. In addition, it will be discussed regarding the mechanisms through which OA-related cartilage degenerations exhibit stiffened or softened matrix, highlighting some critical events that generally incurred to cartilage stiffness alteration, as well as some typical molecules that participated in constituting the mechanical properties of cartilage. Finally, in vitro culturing chondrocytes in various stiffness-tunable scaffolds provided a reliable method to explore the matrix stiffness-dependent modulation of chondrocyte metabolism, which offers valuable information on optimizing implant scaffolds to maximally promote cartilage repair and regeneration during OA. Overall, this review systematically and comprehensively elucidated the current progresses in the relationship between cartilage stiffness alteration and OA progression. We hope that deeper attention and understanding in this researching field will not only develop more innovative methods in OA early detection and diagnose but also provide promising ideas in OA therapy and prognosis.
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Affiliation(s)
- Jing Song
- Qingdao University Affiliated Qingdao Women and Children’s Hospital, Department of Stomatology Medical Center, Qingdao University, Qingdao, Shandong, CN, China
| | - Xuemin Zeng
- The Affiliated Hospital of Qingdao University, Department of Stomatology Medical Center, Qingdao University, Qingdao, Shandong, CN, China
| | - Chenzhi Li
- The Affiliated Hospital of Qingdao University, Department of Stomatology Medical Center, Qingdao University, Qingdao, Shandong, CN, China
| | - Hongyan Yin
- Institute of Hybrid Materials, College of Materials Science and Engineering, Qingdao University, Qingdao, Shandong, CN, China
| | - Sui Mao
- Institute of Hybrid Materials, College of Materials Science and Engineering, Qingdao University, Qingdao, Shandong, CN, China
| | - Dapeng Ren
- The Affiliated Hospital of Qingdao University, Department of Stomatology Medical Center, Qingdao University, Qingdao, Shandong, CN, China
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7
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Tranter JD, Kumar A, Nair VK, Sah R. Mechanosensing in Metabolism. Compr Physiol 2023; 14:5269-5290. [PMID: 38158369 DOI: 10.1002/cphy.c230005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
Electrical mechanosensing is a process mediated by specialized ion channels, gated directly or indirectly by mechanical forces, which allows cells to detect and subsequently respond to mechanical stimuli. The activation of mechanosensitive (MS) ion channels, intrinsically gated by mechanical forces, or mechanoresponsive (MR) ion channels, indirectly gated by mechanical forces, results in electrical signaling across lipid bilayers, such as the plasma membrane. While the functions of mechanically gated channels within a sensory context (e.g., proprioception and touch) are well described, there is emerging data demonstrating functions beyond touch and proprioception, including mechanoregulation of intracellular signaling and cellular/systemic metabolism. Both MR and MS ion channel signaling have been shown to contribute to the regulation of metabolic dysfunction, including obesity, insulin resistance, impaired insulin secretion, and inflammation. This review summarizes our current understanding of the contributions of several MS/MR ion channels in cell types implicated in metabolic dysfunction, namely, adipocytes, pancreatic β-cells, hepatocytes, and skeletal muscle cells, and discusses MS/MR ion channels as possible therapeutic targets. © 2024 American Physiological Society. Compr Physiol 14:5269-5290, 2024.
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Affiliation(s)
- John D Tranter
- Department of Internal Medicine, Cardiovascular Division, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Ashutosh Kumar
- Department of Internal Medicine, Cardiovascular Division, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Vinayak K Nair
- Department of Internal Medicine, Cardiovascular Division, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Rajan Sah
- Department of Internal Medicine, Cardiovascular Division, Washington University School of Medicine, St. Louis, Missouri, USA
- Center for Cardiovascular Research, Washington University, St. Louis, Missouri, USA
- St. Louis VA Medical Center, St. Louis, Missouri, USA
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8
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Murugan NJ, Cariba S, Abeygunawardena S, Rouleau N, Payne SL. Biophysical control of plasticity and patterning in regeneration and cancer. Cell Mol Life Sci 2023; 81:9. [PMID: 38099951 PMCID: PMC10724343 DOI: 10.1007/s00018-023-05054-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 10/12/2023] [Accepted: 11/13/2023] [Indexed: 12/18/2023]
Abstract
Cells and tissues display a remarkable range of plasticity and tissue-patterning activities that are emergent of complex signaling dynamics within their microenvironments. These properties, which when operating normally guide embryogenesis and regeneration, become highly disordered in diseases such as cancer. While morphogens and other molecular factors help determine the shapes of tissues and their patterned cellular organization, the parallel contributions of biophysical control mechanisms must be considered to accurately predict and model important processes such as growth, maturation, injury, repair, and senescence. We now know that mechanical, optical, electric, and electromagnetic signals are integral to cellular plasticity and tissue patterning. Because biophysical modalities underly interactions between cells and their extracellular matrices, including cell cycle, metabolism, migration, and differentiation, their applications as tuning dials for regenerative and anti-cancer therapies are being rapidly exploited. Despite this, the importance of cellular communication through biophysical signaling remains disproportionately underrepresented in the literature. Here, we provide a review of biophysical signaling modalities and known mechanisms that initiate, modulate, or inhibit plasticity and tissue patterning in models of regeneration and cancer. We also discuss current approaches in biomedical engineering that harness biophysical control mechanisms to model, characterize, diagnose, and treat disease states.
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Affiliation(s)
- Nirosha J Murugan
- Department of Health Sciences, Wilfrid Laurier University, Waterloo, ON, Canada.
- Allen Discovery Center, Tufts University, Medford, MA, USA.
| | - Solsa Cariba
- Department of Biomedical Sciences, Ontario Veterinary College, University of Guelph, Guelph, ON, Canada
| | | | - Nicolas Rouleau
- Department of Health Sciences, Wilfrid Laurier University, Waterloo, ON, Canada
- Allen Discovery Center, Tufts University, Medford, MA, USA
- Department of Biomedical Engineering, Tufts University, Medford, MA, USA
| | - Samantha L Payne
- Department of Biomedical Sciences, Ontario Veterinary College, University of Guelph, Guelph, ON, Canada
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9
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Zhang YZ, Li MZ, Wang GX, Wang DW. Bibliometric analysis of the global research status and trends of mechanotransduction in cancer. World J Clin Oncol 2023; 14:518-534. [PMID: 38059188 PMCID: PMC10696219 DOI: 10.5306/wjco.v14.i11.518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 09/14/2023] [Accepted: 10/16/2023] [Indexed: 11/22/2023] Open
Abstract
BACKGROUND The development of cancer is thought to involve the dynamic crosstalk between the tumor cells and the microenvironment they inhabit. Such crosstalk is thought to involve mechanotransduction, a process whereby the cells sense mechanical cues such as stiffness, and translate these into biochemical signals, which have an impact on the subsequent cellular activities. Bibliometric analysis is a statistical method that involves investigating different aspects (including authors' names and affiliations, article keywords, journals and citations) of large volumes of literature. Despite an increase in mechanotransduction-related research in recent years, there are currently no bibliometric studies that describe the global status and trends of mechanotransduction-related research in the cancer field. AIM To investigate the global research status and trends of mechanotransduction in cancer from a bibliometric viewpoint. METHODS Literature on mechanotransduction in cancer published from January 1, 1900 to December 31, 2022 was retrieved from the Web of Science Core Collection. Excel and GraphPad software carried out the statistical analysis of the relevant author, journal, organization, and country information. The co-authorship, keyword co-occurrence, and keyword burst analysis were visualized with VOSviewer and CiteSpace. RESULTS Of 597 publications from 745 institutions in 45 countries were published in 268 journals with 35510 citation times. With 270 articles, the United States is a well-established global leader in this field, and the University of California system, the most productive (n = 36) and influential institution (n = 4705 citations), is the most highly active in collaborating with other organizations. Cancers was the most frequent publisher with the highest H-index. The most productive researcher was Valerie M. Weaver, with 10 publications. The combined analysis of concurrent and burst keywords revealed that the future research hotspots of mechanotransduction in cancer were related to the plasma membrane, autophagy, piezo1/2, heterogeneity, cancer diagnosis, and post-transcriptional modifications. CONCLUSION Mechanotransduction-related cancer research remains a hot topic. The United States is in the leading position of global research on mechano-oncology after almost 30 years of investigations. Research group cooperations exist but remain largely domestic, lacking cross-national communications. The next big topic in this field is to explore how the plasma membrane and its localized mechanosensor can transduce mechanical force through post-transcriptional modifications and thereby participate in cellular activity regulations and cancer development.
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Affiliation(s)
- Yi-Zhan Zhang
- Department of Endocrinology, Shandong Provincial Hospital, Shandong University, Jinan 250021, Shandong Province, China
- Key Laboratory of Endocrine Glucose & Lipids Metabolism and Brain Aging, Ministry of Education, Jinan 250021, Shandong Province, China
| | - Meng-Zhu Li
- Department of Endocrinology, Shandong Provincial Hospital, Shandong University, Jinan 250021, Shandong Province, China
- Key Laboratory of Endocrine Glucose & Lipids Metabolism and Brain Aging, Ministry of Education, Jinan 250021, Shandong Province, China
| | - Guang-Xin Wang
- Shandong Innovation Center of Intelligent Diagnosis, Central Hospital Affiliated to Shandong First Medical University, Jinan 250013, Shandong Province, China
| | - Da-Wei Wang
- Department of Endocrinology, Shandong Provincial Hospital, Shandong University, Jinan 250021, Shandong Province, China
- Key Laboratory of Endocrine Glucose & Lipids Metabolism and Brain Aging, Ministry of Education, Jinan 250021, Shandong Province, China
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10
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Kalli M, Poskus MD, Stylianopoulos T, Zervantonakis IK. Beyond matrix stiffness: targeting force-induced cancer drug resistance. Trends Cancer 2023; 9:937-954. [PMID: 37558577 PMCID: PMC10592424 DOI: 10.1016/j.trecan.2023.07.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 06/27/2023] [Accepted: 07/13/2023] [Indexed: 08/11/2023]
Abstract
During tumor progression, mechanical abnormalities in the tumor microenvironment (TME) trigger signaling pathways in cells that activate cellular programs, resulting in tumor growth and drug resistance. In this review, we describe mechanisms of action for anti-cancer therapies and mechanotransduction programs that regulate cellular processes, including cell proliferation, apoptosis, survival and phenotype switching. We discuss how the therapeutic response is impacted by the three main mechanical TME abnormalities: high extracellular matrix (ECM) composition and stiffness; interstitial fluid pressure (IFP); and elevated mechanical forces. We also review drugs that normalize these abnormalities or block mechanosensors and mechanotransduction pathways. Finally, we discuss current challenges and perspectives for the development of new strategies targeting mechanically induced drug resistance in the clinic.
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Affiliation(s)
- Maria Kalli
- Cancer Biophysics Laboratory, Department of Mechanical and Manufacturing Engineering, University of Cyprus, Nicosia, Cyprus
| | - Matthew D Poskus
- Department of Bioengineering and Hillman Cancer Center, University of Pittsburgh, PA, USA
| | - Triantafyllos Stylianopoulos
- Cancer Biophysics Laboratory, Department of Mechanical and Manufacturing Engineering, University of Cyprus, Nicosia, Cyprus.
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11
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Loeck T, Rugi M, Todesca LM, Kalinowska P, Soret B, Neumann I, Schimmelpfennig S, Najder K, Pethő Z, Farfariello V, Prevarskaya N, Schwab A. The context-dependent role of the Na +/Ca 2+-exchanger (NCX) in pancreatic stellate cell migration. Pflugers Arch 2023; 475:1225-1240. [PMID: 37566113 PMCID: PMC10499968 DOI: 10.1007/s00424-023-02847-3] [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: 06/16/2023] [Revised: 06/16/2023] [Accepted: 07/26/2023] [Indexed: 08/12/2023]
Abstract
Pancreatic stellate cells (PSCs) that can co-metastasize with cancer cells shape the tumor microenvironment (TME) in pancreatic ductal adenocarcinoma (PDAC) by producing an excessive amount of extracellular matrix. This leads to a TME characterized by increased tissue pressure, hypoxia, and acidity. Moreover, cells within the tumor secrete growth factors. The stimuli of the TME trigger Ca2+ signaling and cellular Na+ loading. The Na+/Ca2+ exchanger (NCX) connects the cellular Ca2+ and Na+ homeostasis. The NCX is an electrogenic transporter, which shuffles 1 Ca2+ against 3 Na+ ions over the plasma membrane in a forward or reverse mode. Here, we studied how the impact of NCX activity on PSC migration is modulated by cues from the TME. NCX expression was revealed with qPCR and Western blot. [Ca2+]i, [Na+]i, and the cell membrane potential were determined with the fluorescent indicators Fura-2, Asante NaTRIUM Green-2, and DiBAC4(3), respectively. PSC migration was quantified with live-cell imaging. To mimic the TME, PSCs were exposed to hypoxia, pressure, acidic pH (pH 6.6), and PDGF. NCX-dependent signaling was determined with Western blot analyses. PSCs express NCX1.3 and NCX1.9. [Ca2+]i, [Na+]i, and the cell membrane potential are 94.4 nmol/l, 7.4 mmol/l, and - 39.8 mV, respectively. Thus, NCX1 usually operates in the forward (Ca2+ export) mode. NCX1 plays a differential role in translating cues from the TME into an altered migratory behavior. When NCX1 is operating in the forward mode, its inhibition accelerates PSC migration. Thus, NCX1-mediated extrusion of Ca2+ contributes to a slow mode of migration of PSCs.
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Affiliation(s)
- Thorsten Loeck
- Institute of Physiology II, University of Münster, Robert-Koch-Straße 27b, 48149, Münster, Germany
| | - Micol Rugi
- Institute of Physiology II, University of Münster, Robert-Koch-Straße 27b, 48149, Münster, Germany
| | - Luca Matteo Todesca
- Institute of Physiology II, University of Münster, Robert-Koch-Straße 27b, 48149, Münster, Germany
| | - Paulina Kalinowska
- Institute of Physiology II, University of Münster, Robert-Koch-Straße 27b, 48149, Münster, Germany
| | - Benjamin Soret
- Institute of Physiology II, University of Münster, Robert-Koch-Straße 27b, 48149, Münster, Germany
- Université de Lille, Inserm, U1003 - PhyCell - Physiologie Cellulaire, F-59000, Lille, France
- Laboratory of Excellence, Ion Channels Science and Therapeutics, Villeneuve d'Ascq, France
| | - Ilka Neumann
- Institute of Physiology II, University of Münster, Robert-Koch-Straße 27b, 48149, Münster, Germany
| | - Sandra Schimmelpfennig
- Institute of Physiology II, University of Münster, Robert-Koch-Straße 27b, 48149, Münster, Germany
| | - Karolina Najder
- Institute of Physiology II, University of Münster, Robert-Koch-Straße 27b, 48149, Münster, Germany
| | - Zoltán Pethő
- Institute of Physiology II, University of Münster, Robert-Koch-Straße 27b, 48149, Münster, Germany
| | - Valerio Farfariello
- Université de Lille, Inserm, U1003 - PhyCell - Physiologie Cellulaire, F-59000, Lille, France
- Laboratory of Excellence, Ion Channels Science and Therapeutics, Villeneuve d'Ascq, France
| | - Natalia Prevarskaya
- Université de Lille, Inserm, U1003 - PhyCell - Physiologie Cellulaire, F-59000, Lille, France
- Laboratory of Excellence, Ion Channels Science and Therapeutics, Villeneuve d'Ascq, France
| | - Albrecht Schwab
- Institute of Physiology II, University of Münster, Robert-Koch-Straße 27b, 48149, Münster, Germany.
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12
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Otero-Sobrino Á, Blanco-Carlón P, Navarro-Aguadero MÁ, Gallardo M, Martínez-López J, Velasco-Estévez M. Mechanosensitive Ion Channels: Their Physiological Importance and Potential Key Role in Cancer. Int J Mol Sci 2023; 24:13710. [PMID: 37762011 PMCID: PMC10530364 DOI: 10.3390/ijms241813710] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 08/30/2023] [Accepted: 09/01/2023] [Indexed: 09/29/2023] Open
Abstract
Mechanosensitive ion channels comprise a broad group of proteins that sense mechanical extracellular and intracellular changes, translating them into cation influx to adapt and respond to these physical cues. All cells in the organism are mechanosensitive, and these physical cues have proven to have an important role in regulating proliferation, cell fate and differentiation, migration and cellular stress, among other processes. Indeed, the mechanical properties of the extracellular matrix in cancer change drastically due to high cell proliferation and modification of extracellular protein secretion, suggesting an important contribution to tumor cell regulation. In this review, we describe the physiological significance of mechanosensitive ion channels, emphasizing their role in cancer and immunity, and providing compelling proof of the importance of continuing to explore their potential as new therapeutic targets in cancer research.
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Affiliation(s)
- Álvaro Otero-Sobrino
- H12O-CNIO Hematological Malignancies Clinical Research Unit, Centro Nacional de Investigaciones Oncologicas (CNIO), 28029 Madrid, Spain; (Á.O.-S.); (P.B.-C.); (M.Á.N.-A.); (M.G.); (J.M.-L.)
- Department of Hematology, Hospital Universitario 12 de Octubre, Instituto de Investigacion Sanitaria Hospital 12 de Octubre (imas12), 28041 Madrid, Spain
| | - Pablo Blanco-Carlón
- H12O-CNIO Hematological Malignancies Clinical Research Unit, Centro Nacional de Investigaciones Oncologicas (CNIO), 28029 Madrid, Spain; (Á.O.-S.); (P.B.-C.); (M.Á.N.-A.); (M.G.); (J.M.-L.)
- Department of Hematology, Hospital Universitario 12 de Octubre, Instituto de Investigacion Sanitaria Hospital 12 de Octubre (imas12), 28041 Madrid, Spain
| | - Miguel Ángel Navarro-Aguadero
- H12O-CNIO Hematological Malignancies Clinical Research Unit, Centro Nacional de Investigaciones Oncologicas (CNIO), 28029 Madrid, Spain; (Á.O.-S.); (P.B.-C.); (M.Á.N.-A.); (M.G.); (J.M.-L.)
- Department of Hematology, Hospital Universitario 12 de Octubre, Instituto de Investigacion Sanitaria Hospital 12 de Octubre (imas12), 28041 Madrid, Spain
| | - Miguel Gallardo
- H12O-CNIO Hematological Malignancies Clinical Research Unit, Centro Nacional de Investigaciones Oncologicas (CNIO), 28029 Madrid, Spain; (Á.O.-S.); (P.B.-C.); (M.Á.N.-A.); (M.G.); (J.M.-L.)
- Department of Hematology, Hospital Universitario 12 de Octubre, Instituto de Investigacion Sanitaria Hospital 12 de Octubre (imas12), 28041 Madrid, Spain
| | - Joaquín Martínez-López
- H12O-CNIO Hematological Malignancies Clinical Research Unit, Centro Nacional de Investigaciones Oncologicas (CNIO), 28029 Madrid, Spain; (Á.O.-S.); (P.B.-C.); (M.Á.N.-A.); (M.G.); (J.M.-L.)
- Department of Hematology, Hospital Universitario 12 de Octubre, Instituto de Investigacion Sanitaria Hospital 12 de Octubre (imas12), 28041 Madrid, Spain
- Department of Medicine, School of Medicine, Universidad Complutense de Madrid (UCM), 28040 Madrid, Spain
| | - María Velasco-Estévez
- H12O-CNIO Hematological Malignancies Clinical Research Unit, Centro Nacional de Investigaciones Oncologicas (CNIO), 28029 Madrid, Spain; (Á.O.-S.); (P.B.-C.); (M.Á.N.-A.); (M.G.); (J.M.-L.)
- Department of Hematology, Hospital Universitario 12 de Octubre, Instituto de Investigacion Sanitaria Hospital 12 de Octubre (imas12), 28041 Madrid, Spain
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13
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Gorobets O, Gorobets S, Sharai I, Polyakova T, Zablotskii V. Interaction of magnetic fields with biogenic magnetic nanoparticles on cell membranes: Physiological consequences for organisms in health and disease. Bioelectrochemistry 2023; 151:108390. [PMID: 36746089 DOI: 10.1016/j.bioelechem.2023.108390] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 01/25/2023] [Accepted: 01/27/2023] [Indexed: 02/04/2023]
Abstract
The interaction mechanisms between magnetic fields (MFs) and living systems, which remained hidden for more than a hundred years, continue to attract the attention of researchers from various disciplines: physics, biology, medicine, and life sciences. Revealing these mechanisms at the cellular level would allow to understand complex cell systems and could help to explain and predict cell responses to MFs, intervene in organisms' reactions to MFs of different strengths, directions, and spatial distributions. We suggest several new physical mechanisms of the MF impacts on endothelial and cancer cells by the MF interaction with chains of biogenic and non-biogenic magnetic nanoparticles on cell membranes. The revealed mechanisms can play a hitherto unexpected role in creating physiological responses of organisms to externally applied MFs. We have also a set of theoretical models that can predict how cells will individually and collectively respond to a MF exposure. The physiological sequences of the MF - cell interactions for organisms in health and disease are discussed. The described effects and their underlying mechanisms are general and should take place in a large family of biological effects of MFs. The results are of great importance for further developing novel approaches in cell biology, cell therapy and medicine.
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Affiliation(s)
- Oksana Gorobets
- National Technical University of Ukraine, "Igor Sikorsky Kyiv Polytechnic Institute", Ukraine; Institute of Magnetism of NAS and MES of Ukraine, Ukraine.
| | - Svitlana Gorobets
- National Technical University of Ukraine, "Igor Sikorsky Kyiv Polytechnic Institute", Ukraine
| | - Iryna Sharai
- National Technical University of Ukraine, "Igor Sikorsky Kyiv Polytechnic Institute", Ukraine; Institute of Magnetism of NAS and MES of Ukraine, Ukraine
| | - Tatyana Polyakova
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - Vitalii Zablotskii
- Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic; International Magnetobiology Frontier Research Center (iMFRC), Science Island, China
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14
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Pathak R, Leslie M, Dondapati P, Davis R, Tanaka K, Jett E, Chervoneva I, Tanaka T. Increased breast cancer mortality due to treatment delay and needle biopsy type: a retrospective analysis of SEER-medicare. Breast Cancer 2023:10.1007/s12282-023-01456-3. [PMID: 37130988 DOI: 10.1007/s12282-023-01456-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2022] [Accepted: 03/20/2023] [Indexed: 05/04/2023]
Abstract
BACKGROUND Substantial evidence indicates that delay of first treatment after diagnosis is associated with poorer survival outcomes in breast cancer. Accordingly, the Commission on Cancer introduced a quality measure for receipt of therapeutic surgery within 60 days of diagnostic biopsy for stage I-III breast cancer patients in the non-neoadjuvant setting. It is unknown, however, what may contribute to mortality associated with treatment delay. Therefore, we investigated whether biopsy type moderates the effect of the mortality risk posed by treatment delay. METHODS Retrospective analysis of 31,306 women with stage I-III breast cancer diagnosed between 2003 and 2013 selected from the SEER-Medicare database was performed to determine whether needle biopsy type [core needle biopsy (CNB) or vacuum-assisted biopsy (VAB)] impacts time to treatment (TTT)-associated survival outcomes. Multivariable Fine-Gray competing risk survival models, adjusted for inverse propensity score weights, were used to determine the association between biopsy type, TTT, and breast cancer-specific mortality (BCSM). RESULTS TTT ≥ 60 days was associated with 45% higher risk of BCSM (sHR = 1.45, 95% CI 1.24-1.69) compared to those with TTT < 60 days in stage I-III cases. Independent of TTT, CNB was associated with 28% higher risk of BCSM compared to VAB in stage II-III cases (sHR = 1.28, 95% CI 1.11-1.36), translating to a 2.7% and 4.0% absolute difference in BCSM at 5 and 10 years, respectively. However, in stage I cases, the BCSM risk was not associated with type of biopsy. CONCLUSIONS Our results suggest that treatment delay ≥ 60 days is independently associated with poorer survival outcomes in breast cancer patients. In stage II-III, CNB is associated with higher BCSM than VAB. However, type of biopsy does not underlie TTT-associated breast cancer mortality risk.
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Affiliation(s)
- Rashmi Pathak
- Stephenson Cancer Center, University of Oklahoma Health Sciences Center, 975 NE 10th, BRC-W, Rm 1415, Oklahoma City, OK, 73104, USA
| | - Macall Leslie
- Stephenson Cancer Center, University of Oklahoma Health Sciences Center, 975 NE 10th, BRC-W, Rm 1415, Oklahoma City, OK, 73104, USA
| | - Priya Dondapati
- Stephenson Cancer Center, University of Oklahoma Health Sciences Center, 975 NE 10th, BRC-W, Rm 1415, Oklahoma City, OK, 73104, USA
| | - Rachel Davis
- Department of Surgery, University of Oklahoma Health Sciences Center, 975 NE 10th, Oklahoma City, OK, 73104, USA
| | - Kenichi Tanaka
- Department of Anesthesiology, University of Oklahoma Health Sciences Center, 920 SL Young Blvd, WP1140, Oklahoma City, OK, 73104, USA
| | - Elizabeth Jett
- Department of Radiology, University of Oklahoma Health Sciences Center, 800 SL Young Blvd, Oklahoma City, OK, 73104, USA
| | - Inna Chervoneva
- Department of Pharmacology, Physiology and Cancer Biology, Division of Biostatistics, Thomas Jefferson University, 130 S. 9th Street, 17th Floor, Philadelphia, PA, 19107, USA.
| | - Takemi Tanaka
- Stephenson Cancer Center, University of Oklahoma Health Sciences Center, 975 NE 10th, BRC-W, Rm 1415, Oklahoma City, OK, 73104, USA.
- Department of Pathology, University of Oklahoma Health Sciences Center, 975 NE 10th, Oklahoma City, OK, 73104, USA.
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15
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Griffin MF, Talbott HE, Guardino NJ, Guo JL, Spielman AF, Chen K, Parker JBL, Mascharak S, Henn D, Liang N, King M, Cotterell AC, Bauer-Rowe KE, Abbas DB, Diaz Deleon NM, Sivaraj D, Fahy EJ, Downer M, Akras D, Berry C, Cook J, Quarto N, Klein OD, Lorenz HP, Gurtner GC, Januszyk M, Wan DC, Longaker MT. Piezo inhibition prevents and rescues scarring by targeting the adipocyte to fibroblast transition. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.04.03.535302. [PMID: 37066136 PMCID: PMC10103999 DOI: 10.1101/2023.04.03.535302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/18/2023]
Abstract
While past studies have suggested that plasticity exists between dermal fibroblasts and adipocytes, it remains unknown whether fat actively contributes to fibrosis in scarring. We show that adipocytes convert to scar-forming fibroblasts in response to Piezo -mediated mechanosensing to drive wound fibrosis. We establish that mechanics alone are sufficient to drive adipocyte-to- fibroblast conversion. By leveraging clonal-lineage-tracing in combination with scRNA-seq, Visium, and CODEX, we define a "mechanically naïve" fibroblast-subpopulation that represents a transcriptionally intermediate state between adipocytes and scar-fibroblasts. Finally, we show that Piezo1 or Piezo2 -inhibition yields regenerative healing by preventing adipocytes' activation to fibroblasts, in both mouse-wounds and a novel human-xenograft-wound model. Importantly, Piezo1 -inhibition induced wound regeneration even in pre-existing established scars, a finding that suggests a role for adipocyte-to-fibroblast transition in wound remodeling, the least-understood phase of wound healing. Adipocyte-to-fibroblast transition may thus represent a therapeutic target for minimizing fibrosis via Piezo -inhibition in organs where fat contributes to fibrosis.
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16
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Soret B, Hense J, Lüdtke S, Thale I, Schwab A, Düfer M. Pancreatic K Ca3.1 channels in health and disease. Biol Chem 2023; 404:339-353. [PMID: 36571487 DOI: 10.1515/hsz-2022-0232] [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: 07/15/2022] [Accepted: 11/24/2022] [Indexed: 12/27/2022]
Abstract
Ion channels play an important role for regulation of the exocrine and the endocrine pancreas. This review focuses on the Ca2+-regulated K+ channel KCa3.1, encoded by the KCNN4 gene, which is present in both parts of the pancreas. In the islets of Langerhans, KCa3.1 channels are involved in the regulation of membrane potential oscillations characterizing nutrient-stimulated islet activity. Channel upregulation is induced by gluco- or lipotoxic conditions and might contribute to micro-inflammation and impaired insulin release in type 2 diabetes mellitus as well as to diabetes-associated renal and vascular complications. In the exocrine pancreas KCa3.1 channels are expressed in acinar and ductal cells. They are thought to play a role for anion secretion during digestion but their physiological role has not been fully elucidated yet. Pancreatic carcinoma, especially pancreatic ductal adenocarcinoma (PDAC), is associated with drastic overexpression of KCa3.1. For pharmacological targeting of KCa3.1 channels, we are discussing the possible benefits KCa3.1 channel inhibitors might provide in the context of diabetes mellitus and pancreatic cancer, respectively. We are also giving a perspective for the use of a fluorescently labeled derivative of the KCa3.1 blocker senicapoc as a tool to monitor channel distribution in pancreatic tissue. In summary, modulating KCa3.1 channel activity is a useful strategy for exo-and endocrine pancreatic disease but further studies are needed to evaluate its clinical suitability.
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Affiliation(s)
- Benjamin Soret
- University of Münster, Institute of Physiology II, Robert-Koch-Straße 27b, D-48149 Münster, Germany
| | - Jurek Hense
- University of Münster, Institute of Pharmaceutical and Medicinal Chemistry, Department of Pharmacology, Corrensstraße 48, D-48149 Münster, Germany
| | - Simon Lüdtke
- University of Münster, Institute of Pharmaceutical and Medicinal Chemistry, Department of Pharmacology, Corrensstraße 48, D-48149 Münster, Germany
| | - Insa Thale
- University of Münster, Institute of Pharmaceutical and Medicinal Chemistry, Corrensstraße 48, D-48149 Münster, Germany
| | - Albrecht Schwab
- University of Münster, Institute of Physiology II, Robert-Koch-Straße 27b, D-48149 Münster, Germany
| | - Martina Düfer
- University of Münster, Institute of Pharmaceutical and Medicinal Chemistry, Department of Pharmacology, Corrensstraße 48, D-48149 Münster, Germany
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17
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Karska J, Kowalski S, Saczko J, Moisescu MG, Kulbacka J. Mechanosensitive Ion Channels and Their Role in Cancer Cells. MEMBRANES 2023; 13:167. [PMID: 36837670 PMCID: PMC9965697 DOI: 10.3390/membranes13020167] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 01/25/2023] [Accepted: 01/26/2023] [Indexed: 06/18/2023]
Abstract
Mechanical forces are an inherent element in the world around us. The effects of their action can be observed both on the macro and molecular levels. They can also play a prominent role in the tissues and cells of animals due to the presence of mechanosensitive ion channels (MIChs) such as the Piezo and TRP families. They are essential in many physiological processes in the human body. However, their role in pathology has also been observed. Recent discoveries have highlighted the relationship between these channels and the development of malignant tumors. Multiple studies have shown that MIChs mediate the proliferation, migration, and invasion of various cancer cells via various mechanisms. This could show MIChs as new potential biomarkers in cancer detection and prognosis and interesting therapeutic targets in modern oncology. Our paper is a review of the latest literature on the role of the Piezo1 and TRP families in the molecular mechanisms of carcinogenesis in different types of cancer.
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Affiliation(s)
- Julia Karska
- Faculty of Medicine, Wroclaw Medical University, 50-345 Wroclaw, Poland
| | - Szymon Kowalski
- Faculty of Medicine, Wroclaw Medical University, 50-345 Wroclaw, Poland
| | - Jolanta Saczko
- Department of Molecular and Cellular Biology, Faculty of Pharmacy, Wroclaw Medical University, 50-556 Wroclaw, Poland
| | - Mihaela G. Moisescu
- Department of Biophysics and Cellular Biotechnology, Research Center of Excellence in Biophysics and Cellular Biotechnology, Faculty of Medicine, Carol Davila University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Julita Kulbacka
- Department of Molecular and Cellular Biology, Faculty of Pharmacy, Wroclaw Medical University, 50-556 Wroclaw, Poland
- Department of Immunology, State Research Institute Centre for Innovative Medicine, 08406 Vilnius, Lithuania
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18
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Thale I, Maskri S, Grey L, Todesca LM, Budde T, Maisuls I, Strassert CA, Koch O, Schwab A, Wünsch B. Imaging of K Ca 3.1 Channels in Tumor Cells with PET and Small-Molecule Fluorescent Probes. ChemMedChem 2023; 18:e202200551. [PMID: 36315933 PMCID: PMC10098740 DOI: 10.1002/cmdc.202200551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 10/31/2022] [Indexed: 01/20/2023]
Abstract
The Ca2+ activated K+ channel KCa 3.1 is overexpressed in several human tumor cell lines, e. g. clear cell renal carcinoma, prostate cancer, non-small cell lung cancer. Highly aggressive cancer cells use this ion channel for key processes of the metastatic cascade such as migration, extravasation and invasion. Therefore, small molecules, which are able to image this KCa 3.1 channel in vitro and in vivo represent valuable diagnostic and prognostic tool compounds. The [18 F]fluoroethyltriazolyl substituted senicapoc was used as positron emission tomography (PET) tracer and showed promising properties for imaging of KCa 3.1 channels in lung adenocarcinoma cells in mice. The novel senicapoc BODIPY conjugates with two F-atoms (9 a) and with a F-atom and a methoxy moiety (9 b) at the B-atom led to the characteristic punctate staining pattern resulting from labeling of single KCa 3.1 channels in A549-3R cells. This punctate pattern was completely removed by preincubation with an excess of senicapoc confirming the high specificity of KCa 3.1 labeling. Due to the methoxy moiety at the B-atom and the additional oxyethylene unit in the spacer, 9 b exhibits higher polarity, which improves solubility and handling without reduction of fluorescence quantum yield. Docking studies using a cryo-electron microscopy (EM) structure of the KCa 3.1 channel confirmed the interaction of 9 a and 9 b with a binding pocket in the channel pore.
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Affiliation(s)
- Insa Thale
- Westfälische Wilhelms-Universität Münster, GRK 2515, Chemical biology of ion channels (Chembion), Corrensstraße 48, 48149, Münster, Germany.,Westfälische Wilhelms-Universität Münster, Institut für Pharmazeutische und Medizinische Chemie, Corrensstraße 48, 48149, Münster, Germany
| | - Sarah Maskri
- Westfälische Wilhelms-Universität Münster, GRK 2515, Chemical biology of ion channels (Chembion), Corrensstraße 48, 48149, Münster, Germany.,Westfälische Wilhelms-Universität Münster, Institut für Pharmazeutische und Medizinische Chemie, Corrensstraße 48, 48149, Münster, Germany
| | - Lucie Grey
- Westfälische Wilhelms-Universität Münster, Institut für Pharmazeutische und Medizinische Chemie, Corrensstraße 48, 48149, Münster, Germany
| | - Luca Matteo Todesca
- Westfälische Wilhelms-Universität Münster, GRK 2515, Chemical biology of ion channels (Chembion), Corrensstraße 48, 48149, Münster, Germany.,Westfälische Wilhelms-Universität Münster, Universitätsklinikum Münster, Institute of Physiology II, Robert-Koch-Straße 27b, 48149, Münster, Germany
| | - Thomas Budde
- Westfälische Wilhelms-Universität Münster, GRK 2515, Chemical biology of ion channels (Chembion), Corrensstraße 48, 48149, Münster, Germany.,Westfälische Wilhelms-Universität Münster, Universitätsklinikum Münster, Institute of Physiology I, Robert-Koch-Straße 27a, 48149, Münster, Germany
| | - Ivan Maisuls
- Westfälische Wilhelms-Universität Münster, Institut für Anorganische und Analytische Chemie CiMIC, SoN, Corrensstraße 28, 48149, Münster, Germany.,Westfälische Wilhelms-Universität Münster, CeNTech, Heisenbergstraße 11, 48149, Münster, Germany
| | - Cristian A Strassert
- Westfälische Wilhelms-Universität Münster, Institut für Anorganische und Analytische Chemie CiMIC, SoN, Corrensstraße 28, 48149, Münster, Germany.,Westfälische Wilhelms-Universität Münster, CeNTech, Heisenbergstraße 11, 48149, Münster, Germany
| | - Oliver Koch
- Westfälische Wilhelms-Universität Münster, GRK 2515, Chemical biology of ion channels (Chembion), Corrensstraße 48, 48149, Münster, Germany.,Westfälische Wilhelms-Universität Münster, Institut für Pharmazeutische und Medizinische Chemie, Corrensstraße 48, 48149, Münster, Germany
| | - Albrecht Schwab
- Westfälische Wilhelms-Universität Münster, GRK 2515, Chemical biology of ion channels (Chembion), Corrensstraße 48, 48149, Münster, Germany.,Westfälische Wilhelms-Universität Münster, Universitätsklinikum Münster, Institute of Physiology II, Robert-Koch-Straße 27b, 48149, Münster, Germany
| | - Bernhard Wünsch
- Westfälische Wilhelms-Universität Münster, GRK 2515, Chemical biology of ion channels (Chembion), Corrensstraße 48, 48149, Münster, Germany.,Westfälische Wilhelms-Universität Münster, Institut für Pharmazeutische und Medizinische Chemie, Corrensstraße 48, 48149, Münster, Germany
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19
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Li M, Tian P, Zhao Q, Ma X, Zhang Y. Potassium channels: Novel targets for tumor diagnosis and chemoresistance. Front Oncol 2023; 12:1074469. [PMID: 36703789 PMCID: PMC9872028 DOI: 10.3389/fonc.2022.1074469] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Accepted: 12/21/2022] [Indexed: 01/11/2023] Open
Abstract
In recent years, the role of potassium channels in tumors has been intensively studied. Potassium channel proteins are widely involved in various physiological and pathological processes of cells. The expression and dysfunction of potassium channels are closely related to tumor progression. Potassium channel blockers or activators present antitumor effects by directly inhibiting tumor growth or enhancing the potency of classical antitumor agents in combination therapy. This article reviews the mechanisms by which potassium channels contribute to tumor development in various tumors in recent years, introduces the potential of potassium channels as diagnostic targets and therapeutic means for tumors, and provides further ideas for the proper individualized treatment of tumors.
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Affiliation(s)
- Meizeng Li
- School of Basic Medical Science, Weifang Medical University, Weifang, China
| | - Peijie Tian
- School of Basic Medical Science, Weifang Medical University, Weifang, China
| | - Qing Zhao
- School of Basic Medical Science, Weifang Medical University, Weifang, China
| | - Xialin Ma
- School of Basic Medical Science, Weifang Medical University, Weifang, China
| | - Yunxiang Zhang
- Department of Pathology, Weifang People’ s Hospital, Weifang, China,*Correspondence: Yunxiang Zhang,
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20
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Ochoa SV, Casas Z, Albarracín SL, Sutachan JJ, Torres YP. Therapeutic potential of TRPM8 channels in cancer treatment. Front Pharmacol 2023; 14:1098448. [PMID: 37033630 PMCID: PMC10073478 DOI: 10.3389/fphar.2023.1098448] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 02/20/2023] [Indexed: 04/11/2023] Open
Abstract
Cancer is a multifactorial process associated with changes in signaling pathways leading to cell cycle variations and gene expression. The transient receptor potential melastatin 8 (TRPM8) channel is a non-selective cation channel expressed in neuronal and non-neuronal tissues, where it is involved in several processes, including thermosensation, differentiation, and migration. Cancer is a multifactorial process associated with changes in signaling pathways leading to variations in cell cycle and gene expression. Interestingly, it has been shown that TRPM8 channels also participate in physiological processes related to cancer, such as proliferation, survival, and invasion. For instance, TRPM8 channels have an important role in the diagnosis, prognosis, and treatment of prostate cancer. In addition, it has been reported that TRPM8 channels are involved in the progress of pancreatic, breast, bladder, colon, gastric, and skin cancers, glioblastoma, and neuroblastoma. In this review, we summarize the current knowledge on the role of TRPM8 channels in cancer progression. We also discuss the therapeutic potential of TRPM8 in carcinogenesis, which has been proposed as a molecular target for cancer therapy.
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Affiliation(s)
- Sara V. Ochoa
- Departamento de Nutrición y Bioquímica, Pontificia Universidad Javeriana, Bogotá, Colombia
- Semillero de Investigación, Biofísica y Fisiología de Canales Iónicos, Pontificia Universidad Javeriana, Bogotá, Colombia
- *Correspondence: Sara V. Ochoa, ; Yolima P. Torres,
| | - Zulma Casas
- Departamento de Nutrición y Bioquímica, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Sonia L. Albarracín
- Departamento de Nutrición y Bioquímica, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Jhon Jairo Sutachan
- Departamento de Nutrición y Bioquímica, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Yolima P. Torres
- Departamento de Nutrición y Bioquímica, Pontificia Universidad Javeriana, Bogotá, Colombia
- *Correspondence: Sara V. Ochoa, ; Yolima P. Torres,
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21
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Immunoregulatory Role of the Mechanosensitive Ion Channel Piezo1 in Inflammation and Cancer. MOLECULES (BASEL, SWITZERLAND) 2022; 28:molecules28010213. [PMID: 36615408 PMCID: PMC9822220 DOI: 10.3390/molecules28010213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Revised: 12/22/2022] [Accepted: 12/25/2022] [Indexed: 12/28/2022]
Abstract
Piezo1 was originally identified as a mechanically activated, nonselective cation ion channel, with significant permeability to calcium ions, is evolutionally conserved, and is involved in the proliferation and development of various types of cells, in the context of various types of mechanical or innate stimuli. Recently, our study and work by others have reported that Piezo1 from all kinds of immune cells is involved in regulating many diseases, including infectious inflammation and cancer. This review summarizes the recent progress made in understanding the immunoregulatory role and mechanisms of the mechanical receptor Piezo1 in inflammation and cancer and provides new insight into the biological significance of Piezo1 in regulating immunity and tumors.
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22
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Mapping the functional expression of auxiliary subunits of K Ca1.1 in glioblastoma. Sci Rep 2022; 12:22023. [PMID: 36539587 PMCID: PMC9768140 DOI: 10.1038/s41598-022-26196-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 12/12/2022] [Indexed: 12/24/2022] Open
Abstract
Glioblastoma (GBM) is the most aggressive glial tumor, where ion channels, including KCa1.1, are candidates for new therapeutic options. Since the auxiliary subunits linked to KCa1.1 in GBM are largely unknown we used electrophysiology combined with pharmacology and gene silencing to address the functional expression of KCa1.1/β subunits complexes in both primary tumor cells and in the glioblastoma cell line U-87 MG. The pattern of the sensitivity (activation/inhibition) of the whole-cell currents to paxilline, lithocholic acid, arachidonic acid, and iberiotoxin; the presence of inactivation of the whole-cell current along with the loss of the outward rectification upon exposure to the reducing agent DTT collectively argue that KCa1.1/β3 complex is expressed in U-87 MG. Similar results were found using human primary glioblastoma cells isolated from patient samples. Silencing the β3 subunit expression inhibited carbachol-induced Ca2+ transients in U-87 MG thereby indicating the role of the KCa1.1/β3 in the Ca2+ signaling of glioblastoma cells. Functional expression of the KCa1.1/β3 complex, on the other hand, lacks cell cycle dependence. We suggest that the KCa1.1/β3 complex may have diagnostic and therapeutic potential in glioblastoma in the future.
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23
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Promalignant effects of antiangiogenics in the tumor microenvironment. Semin Cancer Biol 2022; 86:199-206. [PMID: 35248730 DOI: 10.1016/j.semcancer.2022.03.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 03/02/2022] [Accepted: 03/02/2022] [Indexed: 02/07/2023]
Abstract
Antiangiogenic therapies are considered a promising strategy against solid tumors. Their aim is to inhibit the formation of new blood vasculature, thereby reducing the oxygen and nutrient supply to prevent further tumor growth and spreading. However, the strategy has seen limitations, as survival benefits are modest and often accompanied with increased tumor aggressiveness in form of invasion and metastasis. Antiangiogenic induced changes in the tumor microenvironment, such as hypoxia, mechanical stress or extracellular acidification can activate different receptors of tumoral and stromal cells and induce an extensive remodeling of the entire tumor microenvironment, with the overall goal to invade nearby tissues and regain access to the vasculature. In this regard, receptor tyrosine kinases have been studied intensively and especially the inhibition of c-Met has given promising results, characterized by a reduction in invasiveness and prolonged survival. Receptors that sense changes in the extracellular matrix like integrins or proteoglycans can also induce downstream signaling that stimulates the expression of remodeling factors such as new matrix components, enzymes or chemoattractants. Targeting multiple receptors and sensors of cancer cells simultaneously might represent an effective second line treatment that prevents the formation of malignant side effects.
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24
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Konken CP, Heßling K, Thale I, Schelhaas S, Dabel J, Maskri S, Bulk E, Budde T, Koch O, Schwab A, Schäfers M, Wünsch B. Imaging of the calcium activated potassium channel 3.1 (K Ca 3.1) in vivo using a senicapoc-derived positron emission tomography tracer. Arch Pharm (Weinheim) 2022; 355:e2200388. [PMID: 36161669 DOI: 10.1002/ardp.202200388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 09/05/2022] [Accepted: 09/06/2022] [Indexed: 11/10/2022]
Abstract
The calcium-activated potassium channel 3.1 (KCa 3.1) is overexpressed in many tumor entities and has predictive power concerning disease progression and outcome. Imaging of the KCa 3.1 channel in vivo using a radiotracer for positron emission tomography (PET) could therefore establish a potentially powerful diagnostic tool. Senicapoc shows high affinity and excellent selectivity toward the KCa 3.1 channel. We have successfully pursued the synthesis of the 18 F-labeled derivative [18 F]3 of senicapoc using the prosthetic group approach with 1-azido-2-[18 F]fluoroethane ([18 F]6) in a "click" reaction. The biological activity of the new PET tracer was evaluated in vitro and in vivo. Inhibition of the KCa 3.1 channel by 3 was demonstrated by patch clamp experiments and the binding pose was analyzed by docking studies. In mouse and human serum, [18 F]3 was stable for at least one half-life of [18 F]fluorine. Biodistribution experiments in wild-type mice were promising, showing rapid and predominantly renal excretion. An in vivo study using A549-based tumor-bearing mice was performed. The tumor signal could be delineated and image analysis showed a tumor-to-muscle ratio of 1.47 ± 0.24. The approach using 1-azido-2-[18 F]fluoroethane seems to be a good general strategy to achieve triarylacetamide-based fluorinated PET tracers for imaging of the KCa 3.1 channel in vivo.
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Affiliation(s)
- Christian P Konken
- Department of Nuclear Medicine, University Hospital Münster, Münster, Germany
| | - Kathrin Heßling
- Institute of Pharmaceutical and Medicinal Chemistry, Westphalian Wilhelms-University Münster, Münster, Germany
| | - Insa Thale
- Institute of Pharmaceutical and Medicinal Chemistry, Westphalian Wilhelms-University Münster, Münster, Germany.,GRK 2515, Chemical Biology of Ion Channels (Chembion), Westfälische Wilhelms-Universität Münster, Münster, Germany
| | - Sonja Schelhaas
- European Institute for Molecular Imaging (EIMI), Westphalian Wilhelms-University Münster, Münster, Germany.,Cells-in-Motion Interfaculty Center, Westphalian Wilhelms-University Münster, Münster, Germany
| | - Jennifer Dabel
- European Institute for Molecular Imaging (EIMI), Westphalian Wilhelms-University Münster, Münster, Germany
| | - Sarah Maskri
- Institute of Pharmaceutical and Medicinal Chemistry, Westphalian Wilhelms-University Münster, Münster, Germany.,GRK 2515, Chemical Biology of Ion Channels (Chembion), Westfälische Wilhelms-Universität Münster, Münster, Germany
| | - Etmar Bulk
- Institute for Physiology II, University Hospital Münster, Münster, Germany
| | - Thomas Budde
- GRK 2515, Chemical Biology of Ion Channels (Chembion), Westfälische Wilhelms-Universität Münster, Münster, Germany.,Institute for Physiology I, University Hospital Münster, Münster, Germany
| | - Oliver Koch
- Institute of Pharmaceutical and Medicinal Chemistry, Westphalian Wilhelms-University Münster, Münster, Germany.,GRK 2515, Chemical Biology of Ion Channels (Chembion), Westfälische Wilhelms-Universität Münster, Münster, Germany
| | - Albrecht Schwab
- GRK 2515, Chemical Biology of Ion Channels (Chembion), Westfälische Wilhelms-Universität Münster, Münster, Germany.,Institute for Physiology II, University Hospital Münster, Münster, Germany
| | - Michael Schäfers
- Department of Nuclear Medicine, University Hospital Münster, Münster, Germany.,European Institute for Molecular Imaging (EIMI), Westphalian Wilhelms-University Münster, Münster, Germany.,Cells-in-Motion Interfaculty Center, Westphalian Wilhelms-University Münster, Münster, Germany
| | - Bernhard Wünsch
- Institute of Pharmaceutical and Medicinal Chemistry, Westphalian Wilhelms-University Münster, Münster, Germany.,GRK 2515, Chemical Biology of Ion Channels (Chembion), Westfälische Wilhelms-Universität Münster, Münster, Germany.,Cells-in-Motion Interfaculty Center, Westphalian Wilhelms-University Münster, Münster, Germany
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25
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Xiu M, Li L, Li Y, Gao Y. An update regarding the role of WNK kinases in cancer. Cell Death Dis 2022; 13:795. [PMID: 36123332 PMCID: PMC9485243 DOI: 10.1038/s41419-022-05249-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 09/07/2022] [Accepted: 09/08/2022] [Indexed: 01/23/2023]
Abstract
Mammalian WNK kinases (WNKs) are serine/threonine kinases that contain four members, WNK1-4. They function to maintain ion homeostasis and regulate blood pressure in mammals. Recent studies have revealed that the dysregulation of WNKs contributes to tumor growth, metastasis, and angiogenesis through complex mechanisms, especially through phosphorylating kinase substrates SPS1-related proline/alanine-rich kinase (SPAK) and oxidative stress-responsive kinase 1 (OSR1). Here, we review and discuss the relationships between WNKs and several key factors/biological processes in cancer, including ion channels, cation chloride cotransporters, sodium bicarbonate cotransporters, signaling pathways, angiogenesis, autophagy, and non-coding RNAs. In addition, the potential drugs for targeting WNK-SPAK/OSR1 signaling have also been discussed. This review summarizes and discusses knowledge of the roles of WNKs in cancer, which provides a comprehensive reference for future studies.
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Affiliation(s)
- Mengxi Xiu
- grid.24516.340000000123704535Department of Oncology, Shanghai East Hospital, Tongji University School of Medicine, 200120 Shanghai, China
| | - Li Li
- grid.24516.340000000123704535Department of Oncology, Shanghai East Hospital, Tongji University School of Medicine, 200120 Shanghai, China
| | - Yandong Li
- grid.24516.340000000123704535Department of Oncology, Shanghai East Hospital, Tongji University School of Medicine, 200120 Shanghai, China
| | - Yong Gao
- grid.24516.340000000123704535Department of Oncology, Shanghai East Hospital, Tongji University School of Medicine, 200120 Shanghai, China
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26
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Esteban-Linares A, Wareham LK, Walmsley TS, Holden JM, Fitzgerald ML, Pan Z, Xu YQ, Li D. Dynamic Observation of Retinal Response to Pressure Elevation in a Microfluidic Chamber. Anal Chem 2022; 94:12297-12304. [PMID: 36018813 PMCID: PMC10519618 DOI: 10.1021/acs.analchem.1c05652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Dynamic observation of cell and tissue responses to elevated pressure could help our understanding of important physiological and pathological processes related to pressure-induced injury. Here, we report on a microfluidic platform capable of maintaining a wide range of stable operating pressures (30 to 200 mmHg) while using a low flowrate (2-14 μL/h) to limit shear stress. This is achieved by forcing flow through a porous resistance matrix composed of agarose gel downstream of a microfluidic chamber. The flow characteristics were investigated and the permeabilities of the agarose with four different concentrations were extracted, agreeing well with results found in the literature. To demonstrate the capability of the device, we measured the change in intracellular Ca2+ levels of retinal ganglion cells in whole mouse retina in response to pressure. The onset of enhanced pressure results in, on average, an immediate 119.16% increase in the intracellular Ca2+ levels of retinal ganglion cells. The demonstrated microfluidic platform could be widely used to probe cell and tissue responses to elevated pressure.
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Affiliation(s)
| | - Lauren K. Wareham
- Vanderbilt Eye Institute, Vanderbilt Medical Center, Nashville, TN, 37232, USA
| | - Thayer S. Walmsley
- Department of Electrical and Computer Engineering, Vanderbilt University, Nashville, TN 37235, USA
| | - Joseph M. Holden
- Vanderbilt Eye Institute, Vanderbilt Medical Center, Nashville, TN, 37232, USA
| | - Matthew L. Fitzgerald
- Department of Mechanical Engineering, Vanderbilt University, Nashville, TN, 37235, USA
| | - Zhiliang Pan
- Department of Mechanical Engineering, Vanderbilt University, Nashville, TN, 37235, USA
| | - Ya-Qiong Xu
- Department of Electrical and Computer Engineering, Vanderbilt University, Nashville, TN 37235, USA
- Department of Physics and Astronomy, Vanderbilt University, Nashville, TN, 37235, USA
| | - Deyu Li
- Department of Mechanical Engineering, Vanderbilt University, Nashville, TN, 37235, USA
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27
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Bera K, Kiepas A, Zhang Y, Sun SX, Konstantopoulos K. The interplay between physical cues and mechanosensitive ion channels in cancer metastasis. Front Cell Dev Biol 2022; 10:954099. [PMID: 36158191 PMCID: PMC9490090 DOI: 10.3389/fcell.2022.954099] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Accepted: 08/08/2022] [Indexed: 11/13/2022] Open
Abstract
Physical cues have emerged as critical influencers of cell function during physiological processes, like development and organogenesis, and throughout pathological abnormalities, including cancer progression and fibrosis. While ion channels have been implicated in maintaining cellular homeostasis, their cell surface localization often places them among the first few molecules to sense external cues. Mechanosensitive ion channels (MICs) are especially important transducers of physical stimuli into biochemical signals. In this review, we describe how physical cues in the tumor microenvironment are sensed by MICs and contribute to cancer metastasis. First, we highlight mechanical perturbations, by both solid and fluid surroundings typically found in the tumor microenvironment and during critical stages of cancer cell dissemination from the primary tumor. Next, we describe how Piezo1/2 and transient receptor potential (TRP) channels respond to these physical cues to regulate cancer cell behavior during different stages of metastasis. We conclude by proposing alternative mechanisms of MIC activation that work in tandem with cytoskeletal components and other ion channels to bestow cells with the capacity to sense, respond and navigate through the surrounding microenvironment. Collectively, this review provides a perspective for devising treatment strategies against cancer by targeting MICs that sense aberrant physical characteristics during metastasis, the most lethal aspect of cancer.
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Affiliation(s)
- Kaustav Bera
- Department of Chemical and Biomolecular Engineering, The Johns Hopkins University, Baltimore, MD, United States
- Johns Hopkins Institute for NanoBioTechnology, The Johns Hopkins University, Baltimore, MD, United States
| | - Alexander Kiepas
- Department of Chemical and Biomolecular Engineering, The Johns Hopkins University, Baltimore, MD, United States
- Johns Hopkins Institute for NanoBioTechnology, The Johns Hopkins University, Baltimore, MD, United States
- *Correspondence: Alexander Kiepas, ; Konstantinos Konstantopoulos,
| | - Yuqi Zhang
- Department of Chemical and Biomolecular Engineering, The Johns Hopkins University, Baltimore, MD, United States
- Johns Hopkins Institute for NanoBioTechnology, The Johns Hopkins University, Baltimore, MD, United States
| | - Sean X. Sun
- Department of Chemical and Biomolecular Engineering, The Johns Hopkins University, Baltimore, MD, United States
- Johns Hopkins Institute for NanoBioTechnology, The Johns Hopkins University, Baltimore, MD, United States
- Department of Biomedical Engineering, The Johns Hopkins University, Baltimore, MD, United States
- Department of Mechanical Engineering, The Johns Hopkins University, Baltimore, MD, United States
| | - Konstantinos Konstantopoulos
- Department of Chemical and Biomolecular Engineering, The Johns Hopkins University, Baltimore, MD, United States
- Johns Hopkins Institute for NanoBioTechnology, The Johns Hopkins University, Baltimore, MD, United States
- Department of Biomedical Engineering, The Johns Hopkins University, Baltimore, MD, United States
- Department of Oncology, The Johns Hopkins University, Baltimore, MD, United States
- *Correspondence: Alexander Kiepas, ; Konstantinos Konstantopoulos,
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28
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Radoslavova S, Fels B, Pethö Z, Gruner M, Ruck T, Meuth SG, Folcher A, Prevarskaya N, Schwab A, Ouadid-Ahidouch H. TRPC1 channels regulate the activation of pancreatic stellate cells through ERK1/2 and SMAD2 pathways and perpetuate their pressure-mediated activation. Cell Calcium 2022; 106:102621. [PMID: 35905654 DOI: 10.1016/j.ceca.2022.102621] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 07/04/2022] [Accepted: 07/05/2022] [Indexed: 11/02/2022]
Abstract
Pancreatic stellate cell (PSC) activation is a major event occurring during pancreatic ductal adenocarcinoma (PDAC) development. Up to now mechanisms underlying their activation by mechanical cues such as the elevated tissue pressure in PDAC remain poorly understood. Here we investigate the role of one potential mechano-transducer, TRPC1 ion channel, in PSC activation. Using pre-activated human siTRPC1 and murine TRPC1-KO PSCs, we show that TRPC1 promotes αSMA (α-smooth muscle actin) expression, the main activation marker, in cooperation with the phosphorylated SMAD2, under normal and elevated pressure. Functional studies following TRPC1 silencing demonstrate the dual role of TRPC1 in the modulation of PSC proliferation and IL-6 secretion through the activation of ERK1/2 and SMAD2 pathways. Moreover, pressurization changes the mechanical behavior of PSCs by increasing their cellular stiffness and emitted traction forces in a TRPC1-dependent manner. In summary, these results point to a role of TRPC1 channels in sensing and transducing the characteristic mechanical properties of the PDAC microenvironment in PSCs.
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Affiliation(s)
- Silviya Radoslavova
- Laboratory of Cellular and Molecular Physiology, UR-UPJV 4667, University of Picardie Jules Verne, 80039 Amiens, France; University of Lille, Inserm U1003 - PHYCEL - Cellular Physiology, F-59000 Lille, France
| | - Benedikt Fels
- Institute of Physiology, University Lübeck, Lübeck, Germany; DZHK (German Research Centre for Cardiovascular Research), Partner Site Hamburg/Lübeck/Kiel, Lübeck, Germany
| | - Zoltan Pethö
- Institute of Physiology II, University Münster, Münster, Germany
| | - Matthias Gruner
- Institute of Physiology II, University Münster, Münster, Germany
| | - Tobias Ruck
- Klinik für Neurologie, Medical Faculty, Universitätsklinikum Düsseldorf, Düsseldorf, Germany
| | - Sven G Meuth
- Klinik für Neurologie, Medical Faculty, Universitätsklinikum Düsseldorf, Düsseldorf, Germany
| | - Antoine Folcher
- University of Lille, Inserm U1003 - PHYCEL - Cellular Physiology, F-59000 Lille, France
| | - Natalia Prevarskaya
- University of Lille, Inserm U1003 - PHYCEL - Cellular Physiology, F-59000 Lille, France.
| | - Albrecht Schwab
- Institute of Physiology II, University Münster, Münster, Germany.
| | - Halima Ouadid-Ahidouch
- Laboratory of Cellular and Molecular Physiology, UR-UPJV 4667, University of Picardie Jules Verne, 80039 Amiens, France.
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29
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Li X, Hu J, Zhao X, Li J, Chen Y. Piezo channels in the urinary system. Exp Mol Med 2022; 54:697-710. [PMID: 35701561 PMCID: PMC9256749 DOI: 10.1038/s12276-022-00777-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 01/25/2022] [Accepted: 02/16/2022] [Indexed: 12/24/2022] Open
Abstract
The Piezo channel family, including Piezo1 and Piezo2, includes essential mechanosensitive transduction molecules in mammals. Functioning in the conversion of mechanical signals to biological signals to regulate a plethora of physiological processes, Piezo channels, which have a unique homotrimeric three-blade propeller-shaped structure, utilize a cap-motion and plug-and-latch mechanism to gate their ion-conducting pathways. Piezo channels have a wide range of biological roles in various human systems, both in vitro and in vivo. Currently, there is a lack of comprehensive understanding of their antagonists and agonists, and therefore further investigation is needed. Remarkably, increasingly compelling evidence demonstrates that Piezo channel function in the urinary system is important. This review article systematically summarizes the existing evidence of the importance of Piezo channels, including protein structure, mechanogating mechanisms, and pharmacological characteristics, with a particular focus on their physiological and pathophysiological roles in the urinary system. Collectively, this review aims to provide a direction for future clinical applications in urinary system diseases.
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Affiliation(s)
- Xu Li
- Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 200032, China
| | - Junwei Hu
- Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 200032, China
| | - Xuedan Zhao
- Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 200032, China
| | - Juanjuan Li
- Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 200032, China
| | - Yuelai Chen
- Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 200032, China.
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30
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García-Mesa Y, Martín-Sanz R, García-Piqueras J, Cobo R, Muñoz-Bravo S, García-Suárez O, Martín-Biedma B, Vega JA, Feito J. Merkel Cell Carcinoma Display PIEZO2 Immunoreactivity. J Pers Med 2022; 12:jpm12060894. [PMID: 35743679 PMCID: PMC9224776 DOI: 10.3390/jpm12060894] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 05/25/2022] [Accepted: 05/27/2022] [Indexed: 02/01/2023] Open
Abstract
As an essential component of mechano-gated ion channels, critically required for mechanotransduction in mammalian cells, PIEZO2 is known to be characteristically expressed by Merkel cells in human skin. Here, we immunohistochemically investigated the occurrence of Piezo channels in a case series of Merkel cell carcinoma. A panel of antibodies was used to characterize Merkel cells, and to detect PIEZO2 expression. All analyzed tumors displayed PIEZO2 in nearly all cells, showing two patterns of immunostaining: membranous and perinuclear dot-like. PIEZO2 co-localized with cytokeratin 20, chromogranin A, synaptophysin and neurofilament. Moreover, neurofilament immunoreactive structures resembling nerve-Merkel cell contacts were occasionally found. PIEZO2 was also detected in cells of the sweat ducts. The role of PIEZO2 in Merkel cell carcinoma is still unknown, but it could be related with the mechanical regulation of the tumor biology or be a mere vestige of the Merkel cell derivation.
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Affiliation(s)
- Yolanda García-Mesa
- Departamento de Morfología y Biología Celular, Grupo SINPOS, Universidad de Oviedo, 33003 Oviedo, Spain; (Y.G.-M.); (J.G.-P.); (R.C.); (O.G.-S.); (J.A.V.)
| | - Raquel Martín-Sanz
- Servicio de Oftalmología, IBSAL, Complejo Asistencial Universitario de Salamanca, 37007 Salamanca, Spain;
| | - Jorge García-Piqueras
- Departamento de Morfología y Biología Celular, Grupo SINPOS, Universidad de Oviedo, 33003 Oviedo, Spain; (Y.G.-M.); (J.G.-P.); (R.C.); (O.G.-S.); (J.A.V.)
- Departamento de Anatomía e Histología, Universidad de Zaragoza, 50009 Zaragoza, Spain
| | - Ramón Cobo
- Departamento de Morfología y Biología Celular, Grupo SINPOS, Universidad de Oviedo, 33003 Oviedo, Spain; (Y.G.-M.); (J.G.-P.); (R.C.); (O.G.-S.); (J.A.V.)
| | - Saray Muñoz-Bravo
- Servicio de Anatomía Patológica, Instituto de Investigación Biomédica de Salamanca, Complejo Asistencial Universitario de Salamanca, 37007 Salamanca, Spain;
| | - Olivia García-Suárez
- Departamento de Morfología y Biología Celular, Grupo SINPOS, Universidad de Oviedo, 33003 Oviedo, Spain; (Y.G.-M.); (J.G.-P.); (R.C.); (O.G.-S.); (J.A.V.)
| | - Benjamín Martín-Biedma
- Departamento de Cirugía y Especialidades Médico-Quirúrgicas, Universidad de Santiago de Compostela, 15782 Santiago de Compostela, Spain;
| | - José Antonio Vega
- Departamento de Morfología y Biología Celular, Grupo SINPOS, Universidad de Oviedo, 33003 Oviedo, Spain; (Y.G.-M.); (J.G.-P.); (R.C.); (O.G.-S.); (J.A.V.)
- Facultad de Ciencias de la Salud, Universidad Autónoma de Chile, 7500912 Santiago, Chile
| | - Jorge Feito
- Servicio de Anatomía Patológica, Instituto de Investigación Biomédica de Salamanca, Complejo Asistencial Universitario de Salamanca, 37007 Salamanca, Spain;
- Correspondence: ; Tel.: +34-923136783
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Mukherjee P, Rahaman SG, Goswami R, Dutta B, Mahanty M, Rahaman SO. Role of mechanosensitive channels/receptors in atherosclerosis. Am J Physiol Cell Physiol 2022; 322:C927-C938. [PMID: 35353635 PMCID: PMC9109792 DOI: 10.1152/ajpcell.00396.2021] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 03/09/2022] [Accepted: 03/22/2022] [Indexed: 11/22/2022]
Abstract
Mechanical forces are critical physical cues that can affect numerous cellular processes regulating the development, tissue maintenance, and functionality of cells. The contribution of mechanical forces is especially crucial in the vascular system where it is required for embryogenesis and for maintenance of physiological function in vascular cells including aortic endothelial cells, resident macrophages, and smooth muscle cells. Emerging evidence has also identified a role of these mechanical cues in pathological conditions of the vascular system such as atherosclerosis and associated diseases like hypertension. Of the different mechanotransducers, mechanosensitive ion channels/receptors are gaining prominence due to their involvement in numerous physiological and pathological conditions. However, only a handful of potential mechanosensory ion channels/receptors have been shown to be involved in atherosclerosis, and their precise role in disease development and progression remains poorly understood. Here, we provide a comprehensive account of recent studies investigating the role of mechanosensitive ion channels/receptors in atherosclerosis. We discuss the different groups of mechanosensitive proteins and their specific roles in inflammation, endothelial dysfunction, macrophage foam cell formation, and lesion development, which are crucial for the development and progression of atherosclerosis. Results of the studies discussed here will help in developing an understanding of the current state of mechanobiology in vascular diseases, specifically in atherosclerosis, which may be important for the development of innovative and targeted therapeutics for this disease.
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Affiliation(s)
- Pritha Mukherjee
- Department of Nutrition and Food Science, University of Maryland, College Park, Maryland
| | | | - Rishov Goswami
- Department of Nutrition and Food Science, University of Maryland, College Park, Maryland
| | - Bidisha Dutta
- Department of Nutrition and Food Science, University of Maryland, College Park, Maryland
| | - Manisha Mahanty
- Department of Nutrition and Food Science, University of Maryland, College Park, Maryland
| | - Shaik O Rahaman
- Department of Nutrition and Food Science, University of Maryland, College Park, Maryland
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32
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Wen D, Gao Y, Ho C, Yu L, Zhang Y, Lyu G, Hu D, Li Q, Zhang Y. Focusing on Mechanoregulation Axis in Fibrosis: Sensing, Transduction and Effecting. Front Mol Biosci 2022; 9:804680. [PMID: 35359592 PMCID: PMC8963247 DOI: 10.3389/fmolb.2022.804680] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Accepted: 02/09/2022] [Indexed: 11/24/2022] Open
Abstract
Fibrosis, a pathologic process featured by the excessive deposition of connective tissue components, can affect virtually every organ and has no satisfactory therapy yet. Fibrotic diseases are often associated with organ dysfunction which leads to high morbidity and mortality. Biomechanical stmuli and the corresponding cellular response havebeen identified in fibrogenesis, as the fibrotic remodeling could be seen as the incapacity to reestablish mechanical homeostasis: along with extracellular matrix accumulating, the physical property became more “stiff” and could in turn induce fibrosis. In this review, we provide a comprehensive overview of mechanoregulation in fibrosis, from initialing cellular mechanosensing to intracellular mechanotransduction and processing, and ends up in mechanoeffecting. Our contents are not limited to the cellular mechanism, but further expand to the disorders involved and current clinical trials, providing an insight into the disease and hopefully inspiring new approaches for the treatment of tissue fibrosis.
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Affiliation(s)
- Dongsheng Wen
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ya Gao
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Chiakang Ho
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Li Yu
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yuguang Zhang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Guozhong Lyu
- Department of Burns and Plastic Surgery, Affiliated Hospital of Jiangnan University, Wuxi, China
| | - Dahai Hu
- Burns Centre of PLA, Department of Burns and Cutaneous Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an, China
| | - Qingfeng Li
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- *Correspondence: Qingfeng Li, ; Yifan Zhang,
| | - Yifan Zhang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- *Correspondence: Qingfeng Li, ; Yifan Zhang,
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33
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Pope L, Minor DL. The Polysite Pharmacology of TREK K 2P Channels. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2022; 1349:51-65. [PMID: 35138610 DOI: 10.1007/978-981-16-4254-8_4] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
K2P (KCNK) potassium channels form "background" or "leak" currents that have critical roles in cell excitability control in the brain, cardiovascular system, and somatosensory neurons. Similar to many ion channel families, studies of K2Ps have been limited by poor pharmacology. Of six K2P subfamilies, the thermo- and mechanosensitive TREK subfamily comprising K2P2.1 (TREK-1), K2P4.1 (TRAAK), and K2P10.1 (TREK-2) are the first to have structures determined for each subfamily member. These structural studies have revealed key architectural features that underlie K2P function and have uncovered sites residing at every level of the channel structure with respect to the membrane where small molecules or lipids can control channel function. This polysite pharmacology within a relatively small (~70 kDa) ion channel comprises four structurally defined modulator binding sites that occur above (Keystone inhibitor site), at the level of (K2P modulator pocket), and below (Fenestration and Modulatory lipid sites) the C-type selectivity filter gate that is at the heart of K2P function. Uncovering this rich structural landscape provides the framework for understanding and developing subtype-selective modulators to probe K2P function that may provide leads for drugs for anesthesia, pain, arrhythmia, ischemia, and migraine.
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Affiliation(s)
- Lianne Pope
- Cardiovascular Research Institute, University of California San Francisco, San Francisco, CA, US
| | - Daniel L Minor
- Cardiovascular Research Institute, University of California San Francisco, San Francisco, CA, US. .,Departments of Biochemistry and Biophysics, and Cellular and Molecular Pharmacology, University of California, San Francisco, CA, USA. .,California Institute for Quantitative Biomedical Research, University of California, San Francisco, CA, USA. .,Kavli Institute for Fundamental Neuroscience, University of California, San Francisco, CA, USA. .,Molecular Biophysics and Integrated Bio-imaging Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.
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Kalthoff H. How open is the therapeutic horizon for pancreatic cancer patients? Hepatobiliary Pancreat Dis Int 2022; 21:1-3. [PMID: 34789410 DOI: 10.1016/j.hbpd.2021.11.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Accepted: 10/26/2021] [Indexed: 02/05/2023]
Affiliation(s)
- Holger Kalthoff
- Institute for Experimental Cancer Research, Christian-Albrechts-University, Kiel, Germany.
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35
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Mikhailov N, Plotnikova L, Singh P, Giniatullin R, Hämäläinen RH. Functional Characterization of Mechanosensitive Piezo1 Channels in Trigeminal and Somatic Nerves in a Neuron-on-Chip Model. Int J Mol Sci 2022; 23:ijms23031370. [PMID: 35163293 PMCID: PMC8835985 DOI: 10.3390/ijms23031370] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 01/20/2022] [Accepted: 01/24/2022] [Indexed: 02/04/2023] Open
Abstract
Mechanosensitive ion channels, Piezo1 and 2, are activated by pressure and involved in diverse physiological functions, including senses of touch and pain, proprioception and many more. Understanding their function is important for elucidating the mechanosensitive mechanisms of a range of human diseases. Recently, Piezo channels were suggested to be contributors to migraine pain generation. Migraine is typically characterized by allodynia and mechanical hyperalgesia associated with the activation and sensitization of trigeminal ganglion (TG) nerve fibers. Notably, migraine specific medicines are ineffective for other types of pain, suggesting a distinct underlying mechanism. To address, in a straightforward manner, the specificity of the mechanosensitivity of trigeminal vs. somatic nerves, we compared the activity of Piezo1 channels in mouse TG neurons vs. dorsal root ganglia (DRG) neurons. We assessed the functional expression of Piezo1 receptors using a conventional live calcium imaging setup equipped with a multibarrel application system and utilizing a microfluidic chip-based setup. Surprisingly, the TG neurons, despite higher expression of the Piezo1 gene, were less responsive to Piezo1 agonist Yoda1 than the DRG neurons. This difference was more prominent in the chip-based setup, suggesting that certain limitations of the conventional approach, such as turbulence, can be overcome by utilizing microfluidic devices with laminar solution flow.
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Affiliation(s)
- Nikita Mikhailov
- A. I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Neulaniementie 2, 70211 Kuopio, Finland; (N.M.); (L.P.)
| | - Lidiia Plotnikova
- A. I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Neulaniementie 2, 70211 Kuopio, Finland; (N.M.); (L.P.)
| | | | - Rashid Giniatullin
- A. I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Neulaniementie 2, 70211 Kuopio, Finland; (N.M.); (L.P.)
- Correspondence: (R.G.); (R.H.H.)
| | - Riikka H. Hämäläinen
- A. I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Neulaniementie 2, 70211 Kuopio, Finland; (N.M.); (L.P.)
- Correspondence: (R.G.); (R.H.H.)
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36
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Shen S, Zhou W, Xuan J, Xu W, Xu H, Yang M, Zhu L, Yang Z, Yang B, Shi B, Zhao Y, Wang F. Overexpression of pressure-responsive miRNA-5703 inhibits pressure-induced growth and metastasis of liver cancer. J Cancer 2022; 13:325-342. [PMID: 34976193 PMCID: PMC8692678 DOI: 10.7150/jca.64926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Accepted: 11/07/2021] [Indexed: 12/24/2022] Open
Abstract
A vast majority of liver cancers coexist with cirrhosis and/or portal hypertension. A high-pressure tumour microenvironment may lead to malignant progression of liver cancer. Through quantitative reverse transcription-polymerase chain reaction, we found that miRNA-5703 was expressed at low levels in HepG2 and Huh-7 cells and pressure-treated MHCC97H implanted mouse cancer tissues, while its potential target gene, sarcoma gene (SRC), was highly expressed. The expression of miRNA-5703 was higher in liver cancer tissues from Barcelona Clinic Liver Cancer (BCLC) stage A1 patients than those from BCLC stage A2-D patients, whereas SRC showed the opposite expression pattern. Bioinformatics analysis, luciferase reporter assay, and western blotting were performed to verify the relationship between miRNA-5703 and its potential target SRC. Using intravital imaging and immunohistochemistry, we demonstrated that pressure promotes tumour growth in subcutaneous tumourigenesis nude mice, and overexpression of miRNA-5703 significantly downregulated Ki67 and upregulated NM23 in tumour tissues of mice, implying the blockage of tumour growth and metastasis. The activation of proliferation, migration, and invasion of HepG2 and Huh-7 cells by pressure, and inhibition by overexpressing miRNA-5703 were observed by cell counting kit-8 assay, flow cycle assay, transwell assay, and wound healing assay. After the intervention of pressure, inhibitor, and lentivirus to hepatoma cells, SRC, focal adhesion kinase (FAK), phosphatidylinositol 3-kinase (PI3K), serum/glucocorticoid regulated kinase-3 (SGK3), phosphoinositide dependent protein kinase 1 (PDK1), and paxillin were upregulated, and forkhead box O1 (FOXO1) and cyclin dependent kinase inhibitor 1B (P27Kip1) were downregulated in pressure-loaded hepatoma cells, which could be reversed by overexpression of miRNA-5703 or SRC knockdown. In conclusion, upregulation of miRNA-5703 inhibited pressure-induced growth and metastasis by suppressing the SRC-FAK-FOXO1 axis and SRC-paxillin axis. This novel perspective may be conducive to the mechano-inspired anticancer drugs of liver cancer.
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Affiliation(s)
- Si Shen
- Jinling Hosp Dept of Gastroenterology and Hepatology, Nanjing Univ, Sch Med, Nanjing 210002, P R China.,Changzheng Hosp Dept of Gastroenterology, Naval Med Univ, Shanghai 200003, P R China
| | - Wenli Zhou
- Changzheng Hosp Dept of Oncology, Naval Med Univ, Shanghai 200003, P R China
| | - Ji Xuan
- Jinling Hosp Dept of Gastroenterology and Hepatology, Nanjing Univ, Sch Med, Nanjing 210002, P R China
| | - Weijun Xu
- Jinling Hosp Dept of Gastroenterology and Hepatology, Nanjing Univ, Sch Med, Nanjing 210002, P R China
| | - Huabing Xu
- Jinling Hosp Dept of Gastroenterology and Hepatology, Nanjing Univ, Sch Med, Nanjing 210002, P R China
| | - Miaofang Yang
- Jinling Hosp Dept of Gastroenterology and Hepatology, Nanjing Univ, Sch Med, Nanjing 210002, P R China
| | - Liang Zhu
- Changzheng Hosp Dept of Gastroenterology, Naval Med Univ, Shanghai 200003, P R China
| | - Zhuoxin Yang
- Jinling Hosp Dept of Gastroenterology and Hepatology, Nanjing Univ, Sch Med, Nanjing 210002, P R China
| | - Benzhao Yang
- Dept of Cardiology, Naval Medical Center, Naval Med Univ, Shanghai 200005, P R China
| | - Bin Shi
- Changzheng Hosp Dept of Gastroenterology, Naval Med Univ, Shanghai 200003, P R China
| | - Ying Zhao
- Changzheng Hosp Dept of Traditional Chinese Medicine, Naval Med Univ, Shanghai 200003, P R China
| | - Fangyu Wang
- Jinling Hosp Dept of Gastroenterology and Hepatology, Nanjing Univ, Sch Med, Nanjing 210002, P R China
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37
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Wei Q, Wang S, Han F, Wang H, Zhang W, Yu Q, Liu C, Ding L, Wang J, Yu L, Zhu C, Li B, Bl, Cz, Cz, Cz, Qw, Sw, Fh, Hw, Wz, Qy, Cl, Ld, Jw, Ly, Cz, Qw. Cellular modulation by the mechanical cues from biomaterials for tissue engineering. BIOMATERIALS TRANSLATIONAL 2021; 2:323-342. [PMID: 35837415 PMCID: PMC9255801 DOI: 10.12336/biomatertransl.2021.04.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 06/13/2021] [Accepted: 07/10/2021] [Indexed: 01/17/2023]
Abstract
Mechanical cues from the extracellular matrix (ECM) microenvironment are known to be significant in modulating the fate of stem cells to guide developmental processes and maintain bodily homeostasis. Tissue engineering has provided a promising approach to the repair or regeneration of damaged tissues. Scaffolds are fundamental in cell-based regenerative therapies. Developing artificial ECM that mimics the mechanical properties of native ECM would greatly help to guide cell functions and thus promote tissue regeneration. In this review, we introduce various mechanical cues provided by the ECM including elasticity, viscoelasticity, topography, and external stimuli, and their effects on cell behaviours. Meanwhile, we discuss the underlying principles and strategies to develop natural or synthetic biomaterials with different mechanical properties for cellular modulation, and explore the mechanism by which the mechanical cues from biomaterials regulate cell function toward tissue regeneration. We also discuss the challenges in multimodal mechanical modulation of cell behaviours and the interplay between mechanical cues and other microenvironmental factors.
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Affiliation(s)
- Qiang Wei
- Department of Orthopaedic Surgery, Orthopaedic Institute, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Shenghao Wang
- Department of Orthopaedic Surgery, Orthopaedic Institute, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Feng Han
- Department of Orthopaedic Surgery, Orthopaedic Institute, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Huan Wang
- Department of Orthopaedic Surgery, Orthopaedic Institute, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Weidong Zhang
- Department of Orthopaedic Surgery, Orthopaedic Institute, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Qifan Yu
- Department of Orthopaedic Surgery, Orthopaedic Institute, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Changjiang Liu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu Province, China
| | - Luguang Ding
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu Province, China
| | - Jiayuan Wang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu Province, China
| | - Lili Yu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu Province, China
| | - Caihong Zhu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu Province, China,Corresponding authors: Caihong Zhu, ; Bin Li,
| | - Bin Li
- Department of Orthopaedic Surgery, Orthopaedic Institute, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China,College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu Province, China,China Orthopaedic Regenerative Medicine Group (CORMed), Hangzhou, Zhejiang Province, China,Corresponding authors: Caihong Zhu, ; Bin Li,
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38
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Djamgoz MB, Pchelintseva E. Mechanosensitive Ion Channels and Stem Cell Differentiation. Bioelectricity 2021. [DOI: 10.1089/bioe.2021.0037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Affiliation(s)
- Mustafa B.A. Djamgoz
- Department of Life Sciences, Imperial College London, London, United Kingdom
- Biotechnology Research Centre, Cyprus International University, Nicosia, TRNC, Mersin 10, Turkey
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39
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Qin L, He T, Chen S, Yang D, Yi W, Cao H, Xiao G. Roles of mechanosensitive channel Piezo1/2 proteins in skeleton and other tissues. Bone Res 2021; 9:44. [PMID: 34667178 PMCID: PMC8526690 DOI: 10.1038/s41413-021-00168-8] [Citation(s) in RCA: 59] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 06/16/2021] [Accepted: 07/08/2021] [Indexed: 12/12/2022] Open
Abstract
Mechanotransduction is a fundamental ability that allows living organisms to receive and respond to physical signals from both the external and internal environments. The mechanotransduction process requires a range of special proteins termed mechanotransducers to convert mechanical forces into biochemical signals in cells. The Piezo proteins are mechanically activated nonselective cation channels and the largest plasma membrane ion channels reported thus far. The regulation of two family members, Piezo1 and Piezo2, has been reported to have essential functions in mechanosensation and transduction in different organs and tissues. Recently, the predominant contributions of the Piezo family were reported to occur in the skeletal system, especially in bone development and mechano-stimulated bone homeostasis. Here we review current studies focused on the tissue-specific functions of Piezo1 and Piezo2 in various backgrounds with special highlights on their importance in regulating skeletal cell mechanotransduction. In this review, we emphasize the diverse functions of Piezo1 and Piezo2 and related signaling pathways in osteoblast lineage cells and chondrocytes. We also summarize our current understanding of Piezo channel structures and the key findings about PIEZO gene mutations in human diseases.
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Affiliation(s)
- Lei Qin
- Department of Orthopedics, Huazhong University of Science and Technology Union Shenzhen Hospital, Shenzhen, Guangdong, China
- Department of Biochemistry, School of Medicine, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Shenzhen Key Laboratory of Cell Microenvironment, Southern University of Science and Technology, Shenzhen, Guangdong, China
| | - Tailin He
- Department of Biochemistry, School of Medicine, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Shenzhen Key Laboratory of Cell Microenvironment, Southern University of Science and Technology, Shenzhen, Guangdong, China
| | - Sheng Chen
- Department of Biochemistry, School of Medicine, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Shenzhen Key Laboratory of Cell Microenvironment, Southern University of Science and Technology, Shenzhen, Guangdong, China
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Dazhi Yang
- Department of Orthopedics, Huazhong University of Science and Technology Union Shenzhen Hospital, Shenzhen, Guangdong, China
| | - Weihong Yi
- Department of Orthopedics, Huazhong University of Science and Technology Union Shenzhen Hospital, Shenzhen, Guangdong, China.
| | - Huiling Cao
- Department of Biochemistry, School of Medicine, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Shenzhen Key Laboratory of Cell Microenvironment, Southern University of Science and Technology, Shenzhen, Guangdong, China.
| | - Guozhi Xiao
- Department of Biochemistry, School of Medicine, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Shenzhen Key Laboratory of Cell Microenvironment, Southern University of Science and Technology, Shenzhen, Guangdong, China.
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40
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Kirschner A, Strat AN, Yablonski J, Yoo H, Bagué T, Li H, Zhao J, Bollinger KE, Herberg S, Ganapathy PS. Mechanosensitive channel inhibition attenuates TGFβ2-induced actin cytoskeletal remodeling and reactivity in mouse optic nerve head astrocytes. Exp Eye Res 2021; 212:108791. [PMID: 34656548 DOI: 10.1016/j.exer.2021.108791] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 09/22/2021] [Accepted: 10/11/2021] [Indexed: 11/27/2022]
Abstract
Astrocytes within the optic nerve head undergo actin cytoskeletal rearrangement early in glaucoma, which coincides with astrocyte reactivity and extracellular matrix (ECM) deposition. Elevated transforming growth factor beta 2 (TGFβ2) levels within astrocytes have been described in glaucoma, and TGFβ signaling induces actin cytoskeletal remodeling and ECM deposition in many tissues. A key mechanism by which astrocytes sense and respond to external stimuli is via mechanosensitive ion channels. Here, we tested the hypothesis that inhibition of mechanosensitive channels will attenuate TGFβ2-mediated optic nerve head astrocyte actin cytoskeletal remodeling, reactivity, and ECM deposition. Primary optic nerve head astrocytes were isolated from C57BL/6J mice and cell purity was confirmed by immunostaining. Astrocytes were treated with vehicle control, TGFβ2 (5 ng/ml), GsMTx4 (a mechanosensitive channel inhibitor; 500 nM), or TGFβ2 (5 ng/ml) + GsMTx4 (500 nM) for 48 h. FITC-phalloidin staining was used to assess the formation of f-actin stress fibers and to quantify the presence of crosslinked actin networks (CLANs). Cell reactivity was determined by immunostaining and immunoblotting for GFAP. Levels of fibronectin and collagen IV deposition were also quantified. Primary optic nerve head astrocytes were positive for the astrocyte marker GFAP and negative for markers for microglia (F4/80) and oligodendrocytes (OSP1). Significantly increased %CLAN-positive cells were observed after 48-h treatment with TGFβ2 vs. control in a dose-dependent manner. Co-treatment with GsMTx4 significantly decreased %CLAN-positive cells vs. TGFβ2 treatment and the presence of f-actin stress fibers. TGFβ2 treatment significantly increased GFAP, fibronectin, and collagen IV levels, and GsMTx4 co-treatment ameliorated GFAP immunoreactivity. Our data suggest inhibition of mechanosensitive channel activity as a potential therapeutic strategy to modulate actin cytoskeletal remodeling within the optic nerve head in glaucoma.
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Affiliation(s)
- Alexander Kirschner
- Department of Ophthalmology & Visual Sciences, SUNY Upstate Medical University, Syracuse, NY, 13210, USA
| | - Ana N Strat
- Department of Ophthalmology & Visual Sciences, SUNY Upstate Medical University, Syracuse, NY, 13210, USA; Department of Neuroscience and Physiology, SUNY Upstate Medical University, Syracuse, NY, 13210, USA
| | - John Yablonski
- Department of Ophthalmology & Visual Sciences, SUNY Upstate Medical University, Syracuse, NY, 13210, USA
| | - Hannah Yoo
- Department of Ophthalmology & Visual Sciences, SUNY Upstate Medical University, Syracuse, NY, 13210, USA
| | - Tyler Bagué
- Department of Ophthalmology & Visual Sciences, SUNY Upstate Medical University, Syracuse, NY, 13210, USA
| | - Haiyan Li
- Department of Ophthalmology & Visual Sciences, SUNY Upstate Medical University, Syracuse, NY, 13210, USA; Department of Cell and Developmental Biology, SUNY Upstate Medical University, Syracuse, NY, 13210, USA; BioInspired Institute, Syracuse University, Syracuse, NY, 13244, USA
| | - Jing Zhao
- Department of Ophthalmology, Medical College of Georgia at Augusta University, Augusta, GA, 30912, USA; Culver Vision Discovery Institute, Augusta, GA, 30912, USA
| | - Kathryn E Bollinger
- Department of Ophthalmology, Medical College of Georgia at Augusta University, Augusta, GA, 30912, USA; Culver Vision Discovery Institute, Augusta, GA, 30912, USA
| | - Samuel Herberg
- Department of Ophthalmology & Visual Sciences, SUNY Upstate Medical University, Syracuse, NY, 13210, USA; Department of Cell and Developmental Biology, SUNY Upstate Medical University, Syracuse, NY, 13210, USA; BioInspired Institute, Syracuse University, Syracuse, NY, 13244, USA; Department of Biochemistry and Molecular Biology, SUNY Upstate Medical University, Syracuse, NY, 13210, USA; Department of Biomedical and Chemical Engineering, Syracuse University, Syracuse, NY, 13244, USA
| | - Preethi S Ganapathy
- Department of Ophthalmology & Visual Sciences, SUNY Upstate Medical University, Syracuse, NY, 13210, USA; Department of Neuroscience and Physiology, SUNY Upstate Medical University, Syracuse, NY, 13210, USA; BioInspired Institute, Syracuse University, Syracuse, NY, 13244, USA.
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41
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Brömmel K, Konken CP, Börgel F, Obeng-Darko H, Schelhaas S, Bulk E, Budde T, Schwab A, Schäfers M, Wünsch B. Synthesis and biological evaluation of PET tracers designed for imaging of calcium activated potassium channel 3.1 (K Ca3.1) channels in vivo. RSC Adv 2021; 11:30295-30304. [PMID: 35480282 PMCID: PMC9041111 DOI: 10.1039/d1ra03850h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 09/05/2021] [Indexed: 12/14/2022] Open
Abstract
Expression of the Ca2+ activated potassium channel 3.1 (KCa3.1) channel (also known as the Gàrdos channel) is dysregulated in many tumor entities and has predictive power with respect to patient survival. Therefore, a positron emission tomography (PET) tracer targeting this ion channel could serve as a potential diagnostic tool by imaging the KCa3.1 channel in vivo. It was envisaged to synthesize [18F]senicapoc ([18F]1) since senicapoc (1) shows high affinity and excellent selectivity towards the KCa3.1 channels. Because problems occurred during 18F-fluorination, the [18F]fluoroethoxy senicapoc derivative [18F]28 was synthesized to generate an alternative PET tracer targeting the KCa3.1 channel. Inhibition of the KCa3.1 channel by 28 was confirmed by patch clamp experiments. In vitro stability in mouse and human serum was shown for 28. Furthermore, biodistribution experiments in wild type mice were performed. Since [18F]fluoride was detected in vivo after application of [18F]28, an in vitro metabolism study was conducted. A potential degradation route of fluoroethoxy derivatives in vivo was found which in general should be taken into account when designing new PET tracers for different targets with a [18F]fluoroethoxy moiety as well as when using the popular prosthetic group [18F]fluoroethyl tosylate for the alkylation of phenols. Expression of the Ca2+ activated potassium channel 3.1 (KCa3.1) channel (also known as the Gàrdos channel) is dysregulated in many tumor entities and has predictive power with respect to patient survival.![]()
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Affiliation(s)
- Kathrin Brömmel
- Institute for Pharmaceutical and Medicinal Chemistry, Westphalian Wilhelms-University Münster Corrensstraße 48 D-48149 Münster Germany
| | - Christian Paul Konken
- Department of Nuclear Medicine, University Hospital Münster, Albert-Schweitzer-Campus 1 Building A1 D-48149 Münster Germany +49-8347363 +49-251-8344791
| | - Frederik Börgel
- Institute for Pharmaceutical and Medicinal Chemistry, Westphalian Wilhelms-University Münster Corrensstraße 48 D-48149 Münster Germany
| | - Henry Obeng-Darko
- Institute for Pharmaceutical and Medicinal Chemistry, Westphalian Wilhelms-University Münster Corrensstraße 48 D-48149 Münster Germany
| | - Sonja Schelhaas
- European Institute for Molecular Imaging (EIMI), Westphalian Wilhelms-University Münster Waldeyerstraße 15 D-48149 Münster Germany
| | - Etmar Bulk
- Institute for Physiology II, University Hospital Münster Robert-Koch-Straße 27b D-48149 Münster Germany
| | - Thomas Budde
- Institute for Physiology I, University Hospital Münster Robert-Koch-Straße 27a D-48149 Münster Germany.,Cells-in-Motion Interfaculty Center, Westphalian Wilhelms-University Münster Waldeyerstraße 15 D-84149 Münster Germany
| | - Albrecht Schwab
- Institute for Physiology II, University Hospital Münster Robert-Koch-Straße 27b D-48149 Münster Germany.,Cells-in-Motion Interfaculty Center, Westphalian Wilhelms-University Münster Waldeyerstraße 15 D-84149 Münster Germany
| | - Michael Schäfers
- Department of Nuclear Medicine, University Hospital Münster, Albert-Schweitzer-Campus 1 Building A1 D-48149 Münster Germany +49-8347363 +49-251-8344791.,European Institute for Molecular Imaging (EIMI), Westphalian Wilhelms-University Münster Waldeyerstraße 15 D-48149 Münster Germany.,Cells-in-Motion Interfaculty Center, Westphalian Wilhelms-University Münster Waldeyerstraße 15 D-84149 Münster Germany
| | - Bernhard Wünsch
- Institute for Pharmaceutical and Medicinal Chemistry, Westphalian Wilhelms-University Münster Corrensstraße 48 D-48149 Münster Germany.,Cells-in-Motion Interfaculty Center, Westphalian Wilhelms-University Münster Waldeyerstraße 15 D-84149 Münster Germany
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42
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Wang MM, Cui JF. Role of mechanosensitive ion channel Piezo1 in tumors. Shijie Huaren Xiaohua Zazhi 2021; 29:758-764. [DOI: 10.11569/wcjd.v29.i14.758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
A better understanding of mechanotransduction mechanisms is the key to exploring biomechanical signal-regulated tumor malignant characteristics, and it is also the theoretical and practical basis for effective intervention from the upstream of mechanical cues. The discovery of the novel mechanosensitive ion channel protein Piezo1 (piezo type mechanosensitive ion channel component 1) provides a new perspective for the study of mechanotransduction mechanism in tumors. This article summarizes some of the latest research progress of Piezo1 in modulating tumor progression, including inducing cell carcinogenesis; regulating cell cycle, proliferation, invasion, and metastasis; influencing tumor stemness and angiogenesis; as well as reprogramming tumor immune microenvironment, etc.
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Affiliation(s)
- Mi-Mi Wang
- Liver Cancer Institute, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Jie-Feng Cui
- Liver Cancer Institute, Zhongshan Hospital, Fudan University, Shanghai 200032, China
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43
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Kärki T, Tojkander S. TRPV Protein Family-From Mechanosensing to Cancer Invasion. Biomolecules 2021; 11:1019. [PMID: 34356643 PMCID: PMC8301805 DOI: 10.3390/biom11071019] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 06/30/2021] [Accepted: 07/09/2021] [Indexed: 02/08/2023] Open
Abstract
Biophysical cues from the cellular microenvironment are detected by mechanosensitive machineries that translate physical signals into biochemical signaling cascades. At the crossroads of extracellular space and cell interior are located several ion channel families, including TRP family proteins, that are triggered by mechanical stimuli and drive intracellular signaling pathways through spatio-temporally controlled Ca2+-influx. Mechanosensitive Ca2+-channels, therefore, act as critical components in the rapid transmission of physical signals into biologically compatible information to impact crucial processes during development, morphogenesis and regeneration. Given the mechanosensitive nature of many of the TRP family channels, they must also respond to the biophysical changes along the development of several pathophysiological conditions and have also been linked to cancer progression. In this review, we will focus on the TRPV, vanilloid family of TRP proteins, and their connection to cancer progression through their mechanosensitive nature.
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Affiliation(s)
- Tytti Kärki
- Department of Applied Physics, School of Science, Aalto University, 00076 Espoo, Finland;
| | - Sari Tojkander
- Department of Veterinary Biosciences, Section of Pathology, University of Helsinki, 00014 Helsinki, Finland
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44
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Langevin HM. Fascia Mobility, Proprioception, and Myofascial Pain. Life (Basel) 2021; 11:life11070668. [PMID: 34357040 PMCID: PMC8304470 DOI: 10.3390/life11070668] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 06/29/2021] [Accepted: 07/03/2021] [Indexed: 12/19/2022] Open
Abstract
The network of fasciae is an important part of the musculoskeletal system that is often overlooked. Fascia mobility, especially along shear planes separating muscles, is critical for musculoskeletal function and may play an important, but little studied, role in proprioception. Fasciae, especially the deep epimysium and aponeuroses, have recently been recognized as highly innervated with small diameter fibers that can transmit nociceptive signals, especially in the presence of inflammation. Patients with connective tissue hyper- and hypo-mobility disorders suffer in large number from musculoskeletal pain, and many have abnormal proprioception. The relationships among fascia mobility, proprioception, and myofascial pain are largely unstudied, but a better understanding of these areas could result in improved care for many patients with musculoskeletal pain.
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Affiliation(s)
- Helene M Langevin
- National Center for Complementary and Integrative Health, National Institutes of Health, 31 Center Drive, Suite 2B11, Bethesda, MD 20892, USA
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45
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Jakob D, Klesen A, Allegrini B, Darkow E, Aria D, Emig R, Chica AS, Rog-Zielinska EA, Guth T, Beyersdorf F, Kari FA, Proksch S, Hatem SN, Karck M, Künzel SR, Guizouarn H, Schmidt C, Kohl P, Ravens U, Peyronnet R. Piezo1 and BK Ca channels in human atrial fibroblasts: Interplay and remodelling in atrial fibrillation. J Mol Cell Cardiol 2021; 158:49-62. [PMID: 33974928 DOI: 10.1016/j.yjmcc.2021.05.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 04/18/2021] [Accepted: 05/04/2021] [Indexed: 12/17/2022]
Abstract
AIMS Atrial Fibrillation (AF) is an arrhythmia of increasing prevalence in the aging populations of developed countries. One of the important indicators of AF is sustained atrial dilatation, highlighting the importance of mechanical overload in the pathophysiology of AF. The mechanisms by which atrial cells, including fibroblasts, sense and react to changing mechanical forces, are not fully elucidated. Here, we characterise stretch-activated ion channels (SAC) in human atrial fibroblasts and changes in SAC- presence and activity associated with AF. METHODS AND RESULTS Using primary cultures of human atrial fibroblasts, isolated from patients in sinus rhythm or sustained AF, we combine electrophysiological, molecular and pharmacological tools to identify SAC. Two electrophysiological SAC- signatures were detected, indicative of cation-nonselective and potassium-selective channels. Using siRNA-mediated knockdown, we identified the cation-nonselective SAC as Piezo1. Biophysical properties of the potassium-selective channel, its sensitivity to calcium, paxilline or iberiotoxin (blockers), and NS11021 (activator), indicated presence of calcium-dependent 'big potassium channels' (BKCa). In cells from AF patients, Piezo1 activity and mRNA expression levels were higher than in cells from sinus rhythm patients, while BKCa activity (but not expression) was downregulated. Both Piezo1-knockdown and removal of extracellular calcium from the patch pipette resulted in a significant reduction of BKCa current during stretch. No co-immunoprecipitation of Piezo1 and BKCa was detected. CONCLUSIONS Human atrial fibroblasts contain at least two types of ion channels that are activated during stretch: Piezo1 and BKCa. While Piezo1 is directly stretch-activated, the increase in BKCa activity during mechanical stimulation appears to be mainly secondary to calcium influx via SAC such as Piezo1. During sustained AF, Piezo1 is increased, while BKCa activity is reduced, highlighting differential regulation of both channels. Our data support the presence and interplay of Piezo1 and BKCa in human atrial fibroblasts in the absence of physical links between the two channel proteins.
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Affiliation(s)
- Dorothee Jakob
- Institute for Experimental Cardiovascular Medicine, University Heart Center Freiburg, Bad Krozingen, Medical Center - University of Freiburg, Germany; Faculty of Medicine, University of Freiburg, Germany
| | - Alexander Klesen
- Institute for Experimental Cardiovascular Medicine, University Heart Center Freiburg, Bad Krozingen, Medical Center - University of Freiburg, Germany; Faculty of Medicine, University of Freiburg, Germany
| | - Benoit Allegrini
- CNRS University Cote d'Azur laboratory Institut Biology Valrose, Nice, France
| | - Elisa Darkow
- Institute for Experimental Cardiovascular Medicine, University Heart Center Freiburg, Bad Krozingen, Medical Center - University of Freiburg, Germany; Faculty of Medicine, University of Freiburg, Germany; Spemann Graduate School of Biology and Medicine (SGBM), University of Freiburg, Freiburg, Germany; Faculty of Biology, University of Freiburg, Freiburg, Germany
| | - Diana Aria
- Institute for Experimental Cardiovascular Medicine, University Heart Center Freiburg, Bad Krozingen, Medical Center - University of Freiburg, Germany; Faculty of Medicine, University of Freiburg, Germany; G.E.R.N. Tissue Replacement, Regeneration & Neogenesis, Department of Operative Dentistry and Periodontology, Medical Center - University of Freiburg, Germany
| | - Ramona Emig
- Institute for Experimental Cardiovascular Medicine, University Heart Center Freiburg, Bad Krozingen, Medical Center - University of Freiburg, Germany; Faculty of Medicine, University of Freiburg, Germany; CIBSS Centre for Integrative Biological Signalling Studies, Faculty of Biology, University of Freiburg, Germany
| | - Ana Simon Chica
- Institute for Experimental Cardiovascular Medicine, University Heart Center Freiburg, Bad Krozingen, Medical Center - University of Freiburg, Germany; Faculty of Medicine, University of Freiburg, Germany
| | - Eva A Rog-Zielinska
- Institute for Experimental Cardiovascular Medicine, University Heart Center Freiburg, Bad Krozingen, Medical Center - University of Freiburg, Germany; Faculty of Medicine, University of Freiburg, Germany
| | - Tim Guth
- Institute for Experimental Cardiovascular Medicine, University Heart Center Freiburg, Bad Krozingen, Medical Center - University of Freiburg, Germany; Faculty of Medicine, University of Freiburg, Germany
| | - Friedhelm Beyersdorf
- Faculty of Medicine, University of Freiburg, Germany; Department of Cardiovascular Surgery, University Heart Center Freiburg Bad Krozingen, Medical Center - University of Freiburg, Germany
| | - Fabian A Kari
- Faculty of Medicine, University of Freiburg, Germany; Department of Cardiovascular Surgery, University Heart Center Freiburg Bad Krozingen, Medical Center - University of Freiburg, Germany
| | - Susanne Proksch
- Faculty of Medicine, University of Freiburg, Germany; G.E.R.N. Tissue Replacement, Regeneration & Neogenesis, Department of Operative Dentistry and Periodontology, Medical Center - University of Freiburg, Germany
| | - Stéphane N Hatem
- Sorbonne University, Assistance Publique-Hôpitaux de Paris, GH Pitié-Salpêtrière Hospital, INSERM UMR_S1166, Cardiology department, Institute of Cardiometabolism and Nutrition-ICAN, Paris, France
| | - Matthias Karck
- Department of Cardiac Surgery, University of Heidelberg, Germany
| | - Stephan R Künzel
- Institute of Pharmacology and Toxicology, Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, Germany
| | - Hélène Guizouarn
- CNRS University Cote d'Azur laboratory Institut Biology Valrose, Nice, France
| | - Constanze Schmidt
- Department of Cardiology, University of Heidelberg, Germany; DZHK (German Center for Cardiovascular Research) partner site Heidelberg/Mannheim, University of Heidelberg, Germany
| | - Peter Kohl
- Institute for Experimental Cardiovascular Medicine, University Heart Center Freiburg, Bad Krozingen, Medical Center - University of Freiburg, Germany; Faculty of Medicine, University of Freiburg, Germany; CIBSS Centre for Integrative Biological Signalling Studies, Faculty of Biology, University of Freiburg, Germany
| | - Ursula Ravens
- Institute for Experimental Cardiovascular Medicine, University Heart Center Freiburg, Bad Krozingen, Medical Center - University of Freiburg, Germany; Faculty of Medicine, University of Freiburg, Germany
| | - Rémi Peyronnet
- Institute for Experimental Cardiovascular Medicine, University Heart Center Freiburg, Bad Krozingen, Medical Center - University of Freiburg, Germany; Faculty of Medicine, University of Freiburg, Germany.
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Espina JA, Marchant CL, Barriga EH. Durotaxis: the mechanical control of directed cell migration. FEBS J 2021; 289:2736-2754. [PMID: 33811732 PMCID: PMC9292038 DOI: 10.1111/febs.15862] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 02/23/2021] [Accepted: 04/01/2021] [Indexed: 11/28/2022]
Abstract
Directed cell migration is essential for cells to efficiently migrate in physiological and pathological processes. While migrating in their native environment, cells interact with multiple types of cues, such as mechanical and chemical signals. The role of chemical guidance via chemotaxis has been studied in the past, the understanding of mechanical guidance of cell migration via durotaxis remained unclear until very recently. Nonetheless, durotaxis has become a topic of intensive research and several advances have been made in the study of mechanically guided cell migration across multiple fields. Thus, in this article we provide a state of the art about durotaxis by discussing in silico, in vitro and in vivo data. We also present insights on the general mechanisms by which cells sense, transduce and respond to environmental mechanics, to then contextualize these mechanisms in the process of durotaxis and explain how cells bias their migration in anisotropic substrates. Furthermore, we discuss what is known about durotaxis in vivo and we comment on how haptotaxis could arise from integrating durotaxis and chemotaxis in native environments.
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Affiliation(s)
- Jaime A Espina
- Mechanisms of Morphogenesis Lab, Gulbenkian Institute of Science (IGC), Oeiras, Portugal
| | - Cristian L Marchant
- Mechanisms of Morphogenesis Lab, Gulbenkian Institute of Science (IGC), Oeiras, Portugal
| | - Elias H Barriga
- Mechanisms of Morphogenesis Lab, Gulbenkian Institute of Science (IGC), Oeiras, Portugal
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47
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Momin A, Bahrampour S, Min HK, Chen X, Wang X, Sun Y, Huang X. Channeling Force in the Brain: Mechanosensitive Ion Channels Choreograph Mechanics and Malignancies. Trends Pharmacol Sci 2021; 42:367-384. [PMID: 33752907 DOI: 10.1016/j.tips.2021.02.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 02/15/2021] [Accepted: 02/26/2021] [Indexed: 12/15/2022]
Abstract
Force is everywhere. Through cell-intrinsic activities and interactions with the microenvironment, cells generate, transmit, and sense mechanical forces, such as compression, tension, and shear stress. These forces shape the mechanical properties of cells and tissues. Akin to how balanced biochemical signaling safeguards physiological processes, a mechanical optimum is required for homeostasis. The brain constructs a mechanical optimum from its cellular and extracellular constituents. However, in brain cancer, the mechanical properties are disrupted: tumor and nontumoral cells experience dysregulated solid and fluid stress, while tumor tissue develops altered stiffness. Mechanosensitive (MS) ion channels perceive mechanical cues to govern ion flux and cellular signaling. In this review, we describe the mechanical properties of the brain in healthy and cancer states and illustrate MS ion channels as sensors of mechanical cues to regulate malignant growth. Targeting MS ion channels offers disease insights at the interface of cancer, neuroscience, and mechanobiology to reveal therapeutic opportunities in brain tumors.
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Affiliation(s)
- Ali Momin
- Program in Developmental and Stem Cell Biology, The Hospital for Sick Children, Toronto, ONT, M5G 1X8, Canada; Arthur and Sonia Labatt Brain Tumour Research Centre, The Hospital for Sick Children, Toronto, ONT, M5G 1X8, Canada; Department of Molecular Genetics, University of Toronto, Toronto, ONT, M5S 3E1, Canada.
| | - Shahrzad Bahrampour
- Program in Developmental and Stem Cell Biology, The Hospital for Sick Children, Toronto, ONT, M5G 1X8, Canada; Arthur and Sonia Labatt Brain Tumour Research Centre, The Hospital for Sick Children, Toronto, ONT, M5G 1X8, Canada; Department of Cell and Molecular Biology (CMB), Karolinska Institutet, Stockholm, 171 77, Sweden
| | - Hyun-Kee Min
- Program in Developmental and Stem Cell Biology, The Hospital for Sick Children, Toronto, ONT, M5G 1X8, Canada; Arthur and Sonia Labatt Brain Tumour Research Centre, The Hospital for Sick Children, Toronto, ONT, M5G 1X8, Canada; Department of Molecular Genetics, University of Toronto, Toronto, ONT, M5S 3E1, Canada
| | - Xin Chen
- Program in Developmental and Stem Cell Biology, The Hospital for Sick Children, Toronto, ONT, M5G 1X8, Canada; Arthur and Sonia Labatt Brain Tumour Research Centre, The Hospital for Sick Children, Toronto, ONT, M5G 1X8, Canada
| | - Xian Wang
- Program in Developmental and Stem Cell Biology, The Hospital for Sick Children, Toronto, ONT, M5G 1X8, Canada; Arthur and Sonia Labatt Brain Tumour Research Centre, The Hospital for Sick Children, Toronto, ONT, M5G 1X8, Canada
| | - Yu Sun
- Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, ONT, M5S 3G8, Canada
| | - Xi Huang
- Program in Developmental and Stem Cell Biology, The Hospital for Sick Children, Toronto, ONT, M5G 1X8, Canada; Arthur and Sonia Labatt Brain Tumour Research Centre, The Hospital for Sick Children, Toronto, ONT, M5G 1X8, Canada; Department of Molecular Genetics, University of Toronto, Toronto, ONT, M5S 3E1, Canada.
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Hofschröer V, Najder K, Rugi M, Bouazzi R, Cozzolino M, Arcangeli A, Panyi G, Schwab A. Ion Channels Orchestrate Pancreatic Ductal Adenocarcinoma Progression and Therapy. Front Pharmacol 2021; 11:586599. [PMID: 33841132 PMCID: PMC8025202 DOI: 10.3389/fphar.2020.586599] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 10/30/2020] [Indexed: 02/06/2023] Open
Abstract
Pancreatic ductal adenocarcinoma is a devastating disease with a dismal prognosis. Therapeutic interventions are largely ineffective. A better understanding of the pathophysiology is required. Ion channels contribute substantially to the "hallmarks of cancer." Their expression is dysregulated in cancer, and they are "misused" to drive cancer progression, but the underlying mechanisms are unclear. Ion channels are located in the cell membrane at the interface between the intracellular and extracellular space. They sense and modify the tumor microenvironment which in itself is a driver of PDAC aggressiveness. Ion channels detect, for example, locally altered proton and electrolyte concentrations or mechanical stimuli and transduce signals triggered by these microenvironmental cues through association with intracellular signaling cascades. While these concepts have been firmly established for other cancers, evidence has emerged only recently that ion channels are drivers of PDAC aggressiveness. Particularly, they appear to contribute to two of the characteristic PDAC features: the massive fibrosis of the tumor stroma (desmoplasia) and the efficient immune evasion. Our critical review of the literature clearly shows that there is still a remarkable lack of knowledge with respect to the contribution of ion channels to these two typical PDAC properties. Yet, we can draw parallels from ion channel research in other fibrotic and inflammatory diseases. Evidence is accumulating that pancreatic stellate cells express the same "profibrotic" ion channels. Similarly, it is at least in part known which major ion channels are expressed in those innate and adaptive immune cells that populate the PDAC microenvironment. We explore potential therapeutic avenues derived thereof. Since drugs targeting PDAC-relevant ion channels are already in clinical use, we propose to repurpose those in PDAC. The quest for ion channel targets is both motivated and complicated by the fact that some of the relevant channels, for example, KCa3.1, are functionally expressed in the cancer, stroma, and immune cells. Only in vivo studies will reveal which arm of the balance we should put our weights on when developing channel-targeting PDAC therapies. The time is up to explore the efficacy of ion channel targeting in (transgenic) murine PDAC models before launching clinical trials with repurposed drugs.
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Affiliation(s)
| | - Karolina Najder
- Institute of Physiology II, University of Münster, Münster, Germany
| | - Micol Rugi
- Institute of Physiology II, University of Münster, Münster, Germany
| | - Rayhana Bouazzi
- Department of Experimental and Clinical Medicine, Section of Internal Medicine, University of Florence, Florence, Italy
| | - Marco Cozzolino
- Department of Biophysics and Cell Biology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Annarosa Arcangeli
- Department of Experimental and Clinical Medicine, Section of Internal Medicine, University of Florence, Florence, Italy
| | - Gyorgy Panyi
- Department of Biophysics and Cell Biology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Albrecht Schwab
- Institute of Physiology II, University of Münster, Münster, Germany
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49
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Stock C. Circulating Tumor Cells: Does Ion Transport Contribute to Intravascular Survival, Adhesion, Extravasation, and Metastatic Organotropism? Rev Physiol Biochem Pharmacol 2021; 182:139-175. [DOI: 10.1007/112_2021_68] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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50
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Brömmel K, Maskri S, Bulk E, Pethő Z, Rieke M, Budde T, Koch O, Schwab A, Wünsch B. Co-staining of K Ca 3.1 Channels in NSCLC Cells with a Small-Molecule Fluorescent Probe and Antibody-Based Indirect Immunofluorescence. ChemMedChem 2020; 15:2462-2469. [PMID: 33043595 PMCID: PMC7756743 DOI: 10.1002/cmdc.202000652] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 09/21/2020] [Indexed: 01/01/2023]
Abstract
The Ca2+ activated potassium channel 3.1 (KCa 3.1) is involved in critical steps of the metastatic cascade, such as proliferation, migration, invasion and extravasation. Therefore, a fast and efficient protocol for imaging of KCa 3.1 channels was envisaged. The novel fluorescently labeled small molecule imaging probes 1 and 2 were synthesized by connecting a dimethylpyrrole-based BODIPY dye with a derivative of the KCa 3.1 channel inhibitor senicapoc via linkers of different length. Patch-clamp experiments revealed the inhibition of KCa 3.1 channels by the probes confirming interaction with the channel. Both probes 1 and 2 were able to stain KCa 3.1 channels in non-small-cell lung cancer (NSCLC) cells following a simple, fast and efficient protocol. Pre-incubation with unlabeled senicapoc removed the punctate staining pattern showing the specificity of the new probes 1 and 2. Staining of the channel with the fluorescently labeled senicapoc derivatives 1 or 2 or with antibody-based indirect immunofluorescence yielded identical or very similar densities of stained KCa 3.1 channels. However, co-staining using both methods did not lead to the expected overlapping punctate staining pattern. This observation was explained by docking studies showing that the antibody used for indirect immunofluorescence and the probes 1 and 2 label different channel populations. Whereas the antibody binds at the closed channel conformation, the probes 1 and 2 bind within the open channel.
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Affiliation(s)
- Kathrin Brömmel
- Institute for Pharmaceutical and Medicinal ChemistryWestphalian Wilhelms-University MünsterCorrensstraße 4848149MünsterGermany
- Cells-in-Motion Interfaculty CenterWestphalian Wilhelms-University MünsterWaldeyerstraße 1584149MünsterGermany
| | - Sarah Maskri
- Institute for Pharmaceutical and Medicinal ChemistryWestphalian Wilhelms-University MünsterCorrensstraße 4848149MünsterGermany
| | - Etmar Bulk
- Institute for Physiology IIUniversity Hospital MünsterRobert-Koch-Straße 27b48149MünsterGermany
| | - Zoltan Pethő
- Institute for Physiology IIUniversity Hospital MünsterRobert-Koch-Straße 27b48149MünsterGermany
| | - Marius Rieke
- Institute for Physiology IIUniversity Hospital MünsterRobert-Koch-Straße 27b48149MünsterGermany
| | - Thomas Budde
- Institute for Physiology IUniversity Hospital MünsterRobert-Koch-Straße 27a48149MünsterGermany
- Cells-in-Motion Interfaculty CenterWestphalian Wilhelms-University MünsterWaldeyerstraße 1584149MünsterGermany
| | - Oliver Koch
- Institute for Pharmaceutical and Medicinal ChemistryWestphalian Wilhelms-University MünsterCorrensstraße 4848149MünsterGermany
| | - Albrecht Schwab
- Institute for Physiology IIUniversity Hospital MünsterRobert-Koch-Straße 27b48149MünsterGermany
- Cells-in-Motion Interfaculty CenterWestphalian Wilhelms-University MünsterWaldeyerstraße 1584149MünsterGermany
| | - Bernhard Wünsch
- Institute for Pharmaceutical and Medicinal ChemistryWestphalian Wilhelms-University MünsterCorrensstraße 4848149MünsterGermany
- Cells-in-Motion Interfaculty CenterWestphalian Wilhelms-University MünsterWaldeyerstraße 1584149MünsterGermany
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