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Ma B, Xu Y, Gao H, Yang Y, Pan Y, You C. CLIP170 inhibits the metastasis and EMT of papillary thyroid cancer through the TGF-β pathway. Med Oncol 2024; 41:137. [PMID: 38705933 DOI: 10.1007/s12032-024-02355-z] [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: 11/29/2023] [Accepted: 03/11/2024] [Indexed: 05/07/2024]
Abstract
Metastasis poses a significant challenge in combating tumors. Even in papillary thyroid cancer (PTC), which typically exhibits a favorable prognosis, high recurrence rates are attributed to metastasis. Cytoplasmic linker protein 170 (CLIP170) functions as a classical microtubule plus-end tracking protein (+TIP) and has shown close association with cell migration. Nevertheless, the specific impact of CLIP170 on PTC cells remains to be elucidated. Our analysis of the GEO and TCGA databases unveiled an association between CLIP170 and the progression of PTC. To explore the impact of CLIP170 on PTC cells, we conducted various assays. We evaluated its effects through CCK-8, wound healing assay, and transwell assay after knocking down CLIP170. Additionally, the influence of CLIP170 on the cellular actin structure was examined via immunofluorescence; we further investigated the molecular expressions of epithelial-mesenchymal transition (EMT) and the transforming growth factor-β (TGF-β) signaling pathways through Western blotting and RT-qPCR. These findings were substantiated through an in vivo nude mouse model of lung metastasis. We observed a decreased expression of CLIP170 in PTC in contrast to normal thyroid tissue. Functionally, the knockdown of CLIP170 (CLIP170KD) notably enhanced the metastatic potential and EMT of PTC cells, both in vitro and in vivo. Mechanistically, CLIP170KD triggered the activation of the TGF-β pathway, subsequently promoting tumor cell migration, invasion, and EMT. Remarkably, the TGF-β inhibitor LY2157299 effectively countered TGF-β activity and significantly reversed tumor metastasis and EMT induced by CLIP170 knockdown. In summary, these findings collectively propose CLIP170 as a promising therapeutic target to mitigate metastatic tendencies in PTC.
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Affiliation(s)
- Binyuan Ma
- Laboratory Medicine Center, The Second Hospital & Clinical Medical School, Lanzhou University, Lanzhou, 730000, China
| | - Yaxin Xu
- Laboratory Medicine Center, Gansu Provincial Hospital, Lanzhou, 730000, China
| | - Hongwei Gao
- Laboratory Medicine Center, The Second Hospital & Clinical Medical School, Lanzhou University, Lanzhou, 730000, China
| | - Yinggui Yang
- Department of Laboratory, Gansu Third People's Hospital, Lanzhou, 730000, China
| | - Yunyan Pan
- Laboratory Medicine Center, The Second Hospital & Clinical Medical School, Lanzhou University, Lanzhou, 730000, China.
| | - Chongge You
- Laboratory Medicine Center, The Second Hospital & Clinical Medical School, Lanzhou University, Lanzhou, 730000, China.
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Villanueva J, Giménez-Molina Y, Gutiérrez LM. Confocal Microscopy Studies of F-Actin Cytoskeleton Distribution and Dynamics Using Fluorescent LifeAct Constructs in Bovine Adrenal Chromaffin Cells. Methods Mol Biol 2023; 2565:297-309. [PMID: 36205902 DOI: 10.1007/978-1-0716-2671-9_20] [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] [Indexed: 06/16/2023]
Abstract
Cultured bovine chromaffin cells have been characterized as a successful model to study changes in the cytoskeleton during the secretory process. In this sense, the distribution and dynamics of the F-actin cytoskeleton can be studied by confocal microscopy using appropriate molecular tools such as LifeAct, a peptide that stains the structures of F-actin. In this work, we describe some methodological protocols making possible to study, under controlled stimulus conditions, the local dynamic changes of F-actin in the cortical zone and also to detect the simultaneous displacements of chromaffin granules and organelles in active zones.
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Affiliation(s)
- José Villanueva
- Instituto de Neurociencias, Centro Mixto CSIC-Universidad Miguel Hernández, Alicante, Spain.
| | - Yolanda Giménez-Molina
- Instituto de Neurociencias, Centro Mixto CSIC-Universidad Miguel Hernández, Alicante, Spain
| | - Luis M Gutiérrez
- Instituto de Neurociencias, Centro Mixto CSIC-Universidad Miguel Hernández, Alicante, Spain
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De-Miguel FF. The Thermodynamically Expensive Contribution of Three Calcium Sources to Somatic Release of Serotonin. Int J Mol Sci 2022; 23:ijms23031495. [PMID: 35163419 PMCID: PMC8836226 DOI: 10.3390/ijms23031495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 12/28/2021] [Accepted: 12/30/2021] [Indexed: 02/01/2023] Open
Abstract
The soma, dendrites and axon of neurons may display calcium-dependent release of transmitters and peptides. Such release is named extrasynaptic for occurring in absence of synaptic structures. This review describes the cooperative actions of three calcium sources on somatic exocytosis. Emphasis is given to the somatic release of serotonin by the classical leech Retzius neuron, which has allowed detailed studies on the fine steps from excitation to exocytosis. Trains of action potentials induce transmembrane calcium entry through L-type channels. For action potential frequencies above 5 Hz, summation of calcium transients on individual action potentials activates the second calcium source: ryanodine receptors produce calcium-induced calcium release. The resulting calcium tsunami activates mitochondrial ATP synthesis to fuel transport of vesicles to the plasma membrane. Serotonin that is released maintains a large-scale exocytosis by activating the third calcium source: serotonin autoreceptors coupled to phospholipase C promote IP3 production. Activated IP3 receptors in peripheral endoplasmic reticulum release calcium that promotes vesicle fusion. The Swiss-clock workings of the machinery for somatic exocytosis has a striking disadvantage. The essential calcium-releasing endoplasmic reticulum near the plasma membrane hinders the vesicle transport, drastically reducing the thermodynamic efficiency of the ATP expenses and elevating the energy cost of release.
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Affiliation(s)
- Francisco F De-Miguel
- Instituto de Fisiología Celular-Neurociencias, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico
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Koronfel M, Kounatidis I, Mwangangi DM, Vyas N, Okolo C, Jadhav A, Fish T, Chotchuang P, Schulte A, Robinson RC, Harkiolaki M. Correlative cryo-imaging of the cellular universe with soft X-rays and laser light used to track F-actin structures in mammalian cells. Acta Crystallogr D Struct Biol 2021; 77:1479-1485. [PMID: 34866605 PMCID: PMC8647181 DOI: 10.1107/s2059798321010329] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Accepted: 10/06/2021] [Indexed: 11/16/2022] Open
Abstract
Imaging of actin filaments is crucial due to the integral role that they play in many cellular functions such as intracellular transport, membrane remodelling and cell motility. Visualizing actin filaments has so far relied on fluorescence microscopy and electron microscopy/tomography. The former lacks the capacity to capture the overall local ultrastructure, while the latter requires rigorous sample preparation that can lead to potential artefacts, and only delivers relatively small volumes of imaging data at the thinnest areas of a cell. In this work, a correlative approach utilizing in situ super-resolution fluorescence imaging and cryo X-ray tomography was used to image bundles of actin filaments deep inside cells under near-native conditions. In this case, fluorescence 3D imaging localized the actin bundles within the intracellular space, while X-ray tomograms of the same areas provided detailed views of the local ultrastructure. Using this new approach, actin trails connecting vesicles in the perinuclear area and hotspots of actin presence within and around multivesicular bodies were observed. The characteristic prevalence of filamentous actin in cytoplasmic extensions was also documented.
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Affiliation(s)
- Mohamed Koronfel
- Beamline B24, Diamond Light Source, Harwell Science and Innovation Campus, Didcot OX11 0DE, United Kingdom
| | - Ilias Kounatidis
- Beamline B24, Diamond Light Source, Harwell Science and Innovation Campus, Didcot OX11 0DE, United Kingdom
| | - Dennis M. Mwangangi
- Institute of Molecular and Cell Biology, A*STAR (Agency for Science, Technology and Research), Biopolis, Singapore 138673, Singapore
| | - Nina Vyas
- Beamline B24, Diamond Light Source, Harwell Science and Innovation Campus, Didcot OX11 0DE, United Kingdom
| | - Chidinma Okolo
- Beamline B24, Diamond Light Source, Harwell Science and Innovation Campus, Didcot OX11 0DE, United Kingdom
| | - Archana Jadhav
- Beamline B24, Diamond Light Source, Harwell Science and Innovation Campus, Didcot OX11 0DE, United Kingdom
| | - Tom Fish
- Beamline B24, Diamond Light Source, Harwell Science and Innovation Campus, Didcot OX11 0DE, United Kingdom
| | - Phatcharin Chotchuang
- Research Institute for Interdisciplinary Science (RIIS), Okayama University, Okayama 700-8530, Japan
| | - Albert Schulte
- Research Institute for Interdisciplinary Science (RIIS), Okayama University, Okayama 700-8530, Japan
| | - Robert C. Robinson
- Institute of Molecular and Cell Biology, A*STAR (Agency for Science, Technology and Research), Biopolis, Singapore 138673, Singapore
- Research Institute for Interdisciplinary Science (RIIS), Okayama University, Okayama 700-8530, Japan
- School of Biomolecular Science and Engineering (BSE), Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong 21210, Thailand
| | - Maria Harkiolaki
- Beamline B24, Diamond Light Source, Harwell Science and Innovation Campus, Didcot OX11 0DE, United Kingdom
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Abstract
Background We studies the expression of Coronin 1c and F-actin protein in breast cancer and explored their relationship with breast cancer metastasis. Material/Methods A total of 210 breast cancer tissues and adjacent normal tissues were collected from January 2013 to December 2014. The expressions of Coronin 1c and F-actin were detected by immunohistochemistry and Western blotting. We analyzed the relationship between Coronin 1c and F-actin and clinical data of breast cancer. Results The expressions of Coronin 1c and F-actin in breast cancer tissues were positively correlated (r=0.926, P<0.05) and were significantly higher than those in normal tissues (P<0.05). The Coronin 1c and F-actin expressions were not correlated with age, tumor size, ER expression, or PR expression in breast cancer patients (P>0.05), but were significantly correlated with HER-2 expression, histological grade, lymph node metastasis, molecular classification, and TNM (P<0.05). The expression of HER-2 in breast cancer tissues was positively correlated with the expression of Coronin 1c (r=0.706, P<0.05) and F-actin 1c, while F-actin protein in breast cancer tissues with lymph node metastasis was significantly higher than in those without lymph node metastasis (P<0.05). Conclusions Coronin 1c protein and F-actin protein are highly expressed in breast cancer and their expression may be related to the metastasis of breast cancer cells.
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Affiliation(s)
- Jianqiang Shao
- 3rd Surgical Department, Cangzhou Central Hospital, Cangzhou, Hebei, China (mainland)
| | - Hui Zhang
- 3rd Surgical Department, Cangzhou Central Hospital, Cangzhou, Hebei, China (mainland)
| | - Zunyi Wang
- 3rd Surgical Department, Cangzhou Central Hospital, Cangzhou, Hebei, China (mainland)
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Gimenez-Molina Y, Villanueva J, Nanclares C, Lopez-Font I, Viniegra S, Francés MDM, Gandia L, Gil A, Gutiérrez LM. The Differential Organization of F-Actin Alters the Distribution of Organelles in Cultured When Compared to Native Chromaffin Cells. Front Cell Neurosci 2017; 11:135. [PMID: 28522964 PMCID: PMC5415619 DOI: 10.3389/fncel.2017.00135] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Accepted: 04/21/2017] [Indexed: 11/17/2022] Open
Abstract
Cultured bovine chromaffin cells have been used extensively as a neuroendocrine model to study regulated secretion. In order to extend such experimental findings to the physiological situation, it is necessary to study mayor cellular structures affecting secretion in cultured cells with their counterparts present in the adrenomedullary tissue. F-actin concentrates in a peripheral ring in cultured cells, as witnessed by phalloidin–rodhamine labeling, while extends throughout the cytoplasm in native cells. This result is also confirmed when studying the localization of α-fodrin, a F-actin-associated protein. Furthermore, as a consequence of this redistribution of F-actin, we observed that chromaffin granules and mitochondria located into two different cortical and internal populations in cultured cells, whereas they are homogeneously distributed throughout the cytoplasm in the adrenomedullary tissue. Nevertheless, secretion from isolated cells and adrenal gland pieces is remarkably similar when measured by amperometry. Finally, we generate mathematical models to consider how the distribution of organelles affects the secretory kinetics of intact and cultured cells. Our results imply that we have to consider F-actin structural changes to interpret functional data obtained in cultured neuroendocrine cells.
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Affiliation(s)
- Yolanda Gimenez-Molina
- Instituto de Neurociencias, Centro Mixto del Consejo Superior de Investigaciones Científicas, Universidad Miguel HernándezAlicante, Spain
| | - José Villanueva
- Instituto de Neurociencias, Centro Mixto del Consejo Superior de Investigaciones Científicas, Universidad Miguel HernándezAlicante, Spain
| | - Carmen Nanclares
- Instituto Teófilo Hernando, Departamento de Farmacología y Terapéutica, Facultad de Medicina, Universidad Autónoma de MadridMadrid, Spain
| | - Inmaculada Lopez-Font
- Instituto de Neurociencias, Centro Mixto del Consejo Superior de Investigaciones Científicas, Universidad Miguel HernándezAlicante, Spain.,Centro de Investigación Biomédica en Red de Enfermedades NeurodegenerativasAlicante, Spain
| | - Salvador Viniegra
- Instituto de Neurociencias, Centro Mixto del Consejo Superior de Investigaciones Científicas, Universidad Miguel HernándezAlicante, Spain
| | - Maria Del Mar Francés
- Instituto de Neurociencias, Centro Mixto del Consejo Superior de Investigaciones Científicas, Universidad Miguel HernándezAlicante, Spain
| | - Luis Gandia
- Instituto Teófilo Hernando, Departamento de Farmacología y Terapéutica, Facultad de Medicina, Universidad Autónoma de MadridMadrid, Spain
| | - Amparo Gil
- Department Matemática Aplicada y Ciencias de la Computación, Universidad de CantabriaSantander, Spain
| | - Luis M Gutiérrez
- Instituto de Neurociencias, Centro Mixto del Consejo Superior de Investigaciones Científicas, Universidad Miguel HernándezAlicante, Spain
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