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Pan D, Jiang M, Tao G, Shi J, Song Z, Chen R, Wang D. The role of Ca 2+ signalling and InsP3R in the pathogenesis of intrahepatic cholestasis of pregnancy. J OBSTET GYNAECOL 2024; 44:2345276. [PMID: 38685831 DOI: 10.1080/01443615.2024.2345276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Accepted: 04/14/2024] [Indexed: 05/02/2024]
Abstract
BACKGROUND In order to contribute new insights for future prevention and treatment of intrahepatic cholestasis of pregnancy (ICP), and to promote positive pregnancy outcomes, we evaluated serum Ca2+ levels and inositol 1,4,5-trisphosphate receptor (InsP3R) expression in the liver tissue of a rat ICP model. METHODS After establishing the model by injection of oestradiol benzoate and progesterone into pregnant rats, animals were divided into normal control (n = 5) and ICP model groups (n = 5). The expression of InsP3R protein in the liver, and serum levels of Ca2+, glycocholic acid and bile acid were detected. RESULTS InsP3R mRNA and protein were significantly lower in the ICP model group compared to the normal group, as determined by qPCR and immunohistochemistry, respectively. Serum enzyme-linked immunosorbent assay results revealed significantly higher levels of glycocholic acid and bile acid in the ICP model group compared to the normal group, while Ca2+ levels were significantly lower. The levers of Ca2+ were significantly and negatively correlated with the levels of glycocholic acid. The observed decrease in Ca2+ was associated with an increase in total bile acids, but there was no significant correlation. CONCLUSIONS Our results revealed that the expression of InsP3R and serum Ca2+ levels was significantly decreased in the liver tissue of ICP model rats. Additionally, Ca2+ levels were found to be negatively correlated with the level of glycocholic acid.
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Affiliation(s)
- Dan Pan
- Department of Obstetrics and Gynecology, Taizhou Municipal Hospital affiliated with Taizhou University, Taizhou, China
| | - Mengting Jiang
- Department of Obstetrics and Gynecology, Taizhou Municipal Hospital affiliated with Taizhou University, Taizhou, China
| | - Guoxian Tao
- Department of Obstetrics and Gynecology, Taizhou Municipal Hospital affiliated with Taizhou University, Taizhou, China
| | - Jinmei Shi
- Department of Obstetrics and Gynecology, Taizhou Municipal Hospital affiliated with Taizhou University, Taizhou, China
| | - Zhiwei Song
- Department of Medical Laboratory, Taizhou Municipal Hospital affiliated with Taizhou University, Taizhou, China
| | - Ren Chen
- Department of Obstetrics and Gynecology, Taizhou Municipal Hospital affiliated with Taizhou University, Taizhou, China
| | - Dongguo Wang
- Department of Central Laboratory, Taizhou Municipal Hospital affiliated with Taizhou University, Taizhou, China
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2
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Armijos MJG, Bassani TF, Fernandez CC, Rodrigues MA, Gomes DA. Decoding how receptor tyrosine kinases (RTKs) mediate nuclear calcium signaling. Adv Biol Regul 2024; 92:101033. [PMID: 38739986 DOI: 10.1016/j.jbior.2024.101033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 04/18/2024] [Accepted: 05/06/2024] [Indexed: 05/16/2024]
Abstract
Calcium (Ca2+) is a highly versatile intracellular messenger that regulates several cellular processes. Although it is unclear how a single-second messenger coordinates various effects within a cell, there is growing evidence that spatial patterns of Ca2+ signals play an essential role in determining their specificity. Ca2+ signaling patterns can differ in various cell regions, and Ca2+ signals in the nuclear and cytoplasmic compartments have been observed to occur independently. The initiation and function of Ca2+ signaling within the nucleus are not yet fully understood. Receptor tyrosine kinases (RTKs) induce Ca2+ signaling resulting from phosphatidylinositol 4,5-bisphosphate (PIP2) hydrolysis and inositol 1,4,5-trisphosphate (InsP3) formation within the nucleus. This signaling mechanism may be responsible for the effects of specific growth factors on cell proliferation and gene transcription. This review highlights the recent advances in RTK trafficking to the nucleus and explains how these receptors initiate nuclear calcium signaling.
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Affiliation(s)
- María José González Armijos
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Thais Fernandes Bassani
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Clara Couto Fernandez
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Michele Angela Rodrigues
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Dawidson Assis Gomes
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
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3
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Casalin I, Ceneri E, Ratti S, Manzoli L, Cocco L, Follo MY. Nuclear Phospholipids and Signaling: An Update of the Story. Cells 2024; 13:713. [PMID: 38667329 PMCID: PMC11048846 DOI: 10.3390/cells13080713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 04/10/2024] [Accepted: 04/11/2024] [Indexed: 04/28/2024] Open
Abstract
In the last three decades, the presence of phospholipids in the nucleus has been shown and thoroughly investigated. A considerable amount of interest has been raised about nuclear inositol lipids, mainly because of their role in signaling acting. Here, we review the main issues of nuclear phospholipid localization and the role of nuclear inositol lipids and their related enzymes in cellular signaling, both in physiological and pathological conditions.
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Affiliation(s)
| | | | | | | | - Lucio Cocco
- Cellular Signaling Laboratory, Department of Biomedical and Neuromotor Sciences, University of Bologna, 40126 Bologna, Italy; (I.C.); (E.C.); (S.R.); (L.M.); (M.Y.F.)
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4
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Hu C, Shi Z, Liu X, Sun C. The Research Progress of Mitochondrial Transplantation in the Treatment of Mitochondrial Defective Diseases. Int J Mol Sci 2024; 25:1175. [PMID: 38256247 PMCID: PMC10816172 DOI: 10.3390/ijms25021175] [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: 12/22/2023] [Revised: 01/14/2024] [Accepted: 01/16/2024] [Indexed: 01/24/2024] Open
Abstract
Mitochondria are double-membrane organelles that are involved in energy production, apoptosis, and signaling in eukaryotic cells. Several studies conducted over the past decades have correlated mitochondrial dysfunction with various diseases, including cerebral ischemia, myocardial ischemia-reperfusion, and cancer. Mitochondrial transplantation entails importing intact mitochondria from healthy tissues into diseased tissues with damaged mitochondria to rescue the injured cells. In this review, the different mitochondrial transplantation techniques and their clinical applications have been discussed. In addition, the challenges and future directions pertaining to mitochondrial transplantation and its potential in the treatment of diseases with defective mitochondria have been summarized.
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Affiliation(s)
- Cuilan Hu
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; (C.H.); (Z.S.); (X.L.)
- Key Laboratory of Heavy Ion Radiation Biology and Medicine, Chinese Academy of Sciences, Lanzhou 730000, China
- Key Laboratory of Basic Research on Heavy Ion Radiation Application in Medicine, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zheng Shi
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; (C.H.); (Z.S.); (X.L.)
- Key Laboratory of Heavy Ion Radiation Biology and Medicine, Chinese Academy of Sciences, Lanzhou 730000, China
- Key Laboratory of Basic Research on Heavy Ion Radiation Application in Medicine, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiongxiong Liu
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; (C.H.); (Z.S.); (X.L.)
- Key Laboratory of Heavy Ion Radiation Biology and Medicine, Chinese Academy of Sciences, Lanzhou 730000, China
- Key Laboratory of Basic Research on Heavy Ion Radiation Application in Medicine, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chao Sun
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; (C.H.); (Z.S.); (X.L.)
- Key Laboratory of Heavy Ion Radiation Biology and Medicine, Chinese Academy of Sciences, Lanzhou 730000, China
- Key Laboratory of Basic Research on Heavy Ion Radiation Application in Medicine, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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5
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Rodrigues MA, Gomes DA, Fiorotto R, Guerra MT, Weerachayaphorn J, Bo T, Sessa WC, Strazzabosco M, Nathanson MH. Molecular determinants of peri-apical targeting of inositol 1,4,5-trisphosphate receptor type 3 in cholangiocytes. Hepatol Commun 2022; 6:2748-2764. [PMID: 35852334 PMCID: PMC9512452 DOI: 10.1002/hep4.2042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Revised: 06/03/2022] [Accepted: 06/20/2022] [Indexed: 11/19/2022] Open
Abstract
Fluid and bicarbonate secretion is a principal function of cholangiocytes, and impaired secretion results in cholestasis. Cholangiocyte secretion depends on peri-apical expression of the type 3 inositol trisphosphate receptor (ITPR3), and loss of this intracellular Ca2+ release channel is a final common event in most cholangiopathies. Here we investigated the mechanism by which ITPR3 localizes to the apical region to regulate secretion. Isolated bile duct units, primary mouse cholangiocytes, and polarized Madin-Darby canine kidney (MDCK) cells were examined using a combination of biochemical and fluorescence microscopy techniques to investigate the mechanism of ITPR3 targeting to the apical region. Apical localization of ITPR3 depended on the presence of intact lipid rafts as well as interactions with both caveolin 1 (CAV1) and myosin heavy chain 9 (MYH9). Chemical disruption of lipid rafts or knockdown of CAV1 or MYH9 redistributed ITPR3 away from the apical region. MYH9 interacted with the five c-terminal amino acids of the ITPR3 peptide. Disruption of lipid rafts impaired Ca2+ signaling, and absence of CAV1 impaired both Ca2+ signaling and fluid secretion. Conclusion: A cooperative mechanism involving MYH9, CAV1, and apical lipid rafts localize ITPR3 to the apical region to regulate Ca2+ signaling and secretion in cholangiocytes.
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Affiliation(s)
- Michele A. Rodrigues
- Section of Digestive Diseases, Internal MedicineYale UniversityNew HavenConnecticutUSA
- Department of Biochemistry and ImmunologyFederal University of Minas Gerais (UFMG)Belo HorizonteMGBrazil
| | - Dawidson A. Gomes
- Section of Digestive Diseases, Internal MedicineYale UniversityNew HavenConnecticutUSA
- Department of Biochemistry and ImmunologyFederal University of Minas Gerais (UFMG)Belo HorizonteMGBrazil
| | - Romina Fiorotto
- Section of Digestive Diseases, Internal MedicineYale UniversityNew HavenConnecticutUSA
| | - Mateus T. Guerra
- Section of Digestive Diseases, Internal MedicineYale UniversityNew HavenConnecticutUSA
| | | | - Tao Bo
- Department of Pharmacology and Program in Vascular Cell Signaling and TherapeuticsYale University School of MedicineNew HavenConnecticutUSA
| | - William C. Sessa
- Department of Pharmacology and Program in Vascular Cell Signaling and TherapeuticsYale University School of MedicineNew HavenConnecticutUSA
| | - Mario Strazzabosco
- Section of Digestive Diseases, Internal MedicineYale UniversityNew HavenConnecticutUSA
| | - Michael H. Nathanson
- Section of Digestive Diseases, Internal MedicineYale UniversityNew HavenConnecticutUSA
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6
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Challenges for the application of EGFR-targeting peptide GE11 in tumor diagnosis and treatment. J Control Release 2022; 349:592-605. [PMID: 35872181 DOI: 10.1016/j.jconrel.2022.07.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 07/15/2022] [Accepted: 07/16/2022] [Indexed: 11/20/2022]
Abstract
Abnormal regulation of cell signaling pathways on cell survival, proliferation and migration contributes to the development of malignant tumors. Among them, epidermal growth factor receptor (EGFR) is one of the most important biomarkers in many types of malignant solid tumors. Its over-expression and mutation status can be served as a biomarker to identify patients who can be benifit from EGFR tyrosine kinase inhibitors and anti-EGFR monocloncal antibody (mAb) therapy. For decades, researches on EGFR targeted ligands were actively carried out to identify potent candidates for cancer therapy. An ideal EGFR ligand can competitively inhibit the binding of endogenous growth factor, such as epidermal growth factor (EGF) and transforming growth factor-α(TGF-α) to EGFR, thus block EGFR signaling pathway and downregulate EGFR expression. Alternatively, conjugation of EGFR ligands on drug delivery systems (DDS) can facilitate targeting delivery of therapeutics or diagnostic agents to EGFR over-expression tumors via EGFR-mediated endocytosis. GE11 peptide is one of the potent EGFR ligand screened from a phage display peptide library. It is a dodecapeptide that can specifically binds to EGFR with high affinity and selectivity. GE11 has been widely used in the diagnosis and targeted delivery of drugs for radiotherapy, genetherapy and chemotherpy against EGFR positive tumors. In this review, the critical factors affecting the in vivo and in vitro targeting performance of GE11 peptide, including ligand-receptor intermolecular force, linker bond properties and physiochemical properties of carrier materials, are detailedly interpreted. This review provides a valuable vision for the rational design and optimization of GE11-based active targeting strategies for cancer treatment, and it will promote the translation studies of GE11 from lab research to clinical application.
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7
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Rodrigues MA, Gomes DA, Cosme AL, Sanches MD, Resende V, Cassali GD. Inositol 1,4,5-trisphosphate receptor type 3 (ITPR3) is overexpressed in cholangiocarcinoma and its expression correlates with S100 calcium-binding protein A4 (S100A4). Biomed Pharmacother 2022; 145:112403. [PMID: 34798470 PMCID: PMC8678364 DOI: 10.1016/j.biopha.2021.112403] [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: 08/16/2021] [Revised: 10/31/2021] [Accepted: 11/03/2021] [Indexed: 01/03/2023] Open
Abstract
Cholangiocarcinoma (CCA) is the second most malignant neoplasm in the liver that arises from the biliary tree. CCA is associated with a poor prognosis, and the key players involved in its pathogenesis are still not well understood. Receptor tyrosine kinases (RTKs), such as epidermal growth factor receptor (EGFR), can mediate intracellular calcium (Ca2+) signaling pathways via inositol 1,4,5-trisphosphate (InsP3), activating inositol 1,4,5-trisphosphate receptors (ITPRs) and regulating tumor growth. ITPR isoform 3 (ITPR3) is the main intracellular Ca2+ release channel in cholangiocytes. The effects of intracellular Ca2+ are mediated by calcium-binding proteins such as Calmodulin and S100 calcium-binding protein A4 (S100A4). However, the clinicopathological and biological significance of EGFR, ITPR3 and S100A4 in CCA remains unclear. Thus, the present work investigates the immunoexpression of these three proteins in 59 CCAs from patients who underwent curative surgical treatment and correlates the data with clinicopathological features and survival. High ITPR3 expression was correlated with CA 19-9 levels, TNM stage and lymph node metastasis (N). Furthermore, ITPR3 expression was increased in distal CCA compared to control bile ducts and intrahepatic and perihilar CCAs. These observations were confirmed by proteomic analysis. ITPR3 and S100A4 clinical scores were significantly correlated. Furthermore, it was demonstrated that EGF induces calcium signaling in a cholangiocarcinoma cell line and ITPR3 colocalizes with nonmuscle myosin IIA (NMIIA). In summary, ITPR3 overexpression could contribute to CCA progression and it may represent a potential therapeutic target.
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Affiliation(s)
- Michele A. Rodrigues
- Department of General Pathology, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte, Minas Gerais, CEP: 31270-901, Brazil
| | - Dawidson A. Gomes
- Department of Biochemistry and Immunology, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte, Minas Gerais, CEP: 31270-901, Brazil
| | - Ana Luiza Cosme
- School of Medicine, Department of Surgery, Universidade Federal de Minas Gerais, Av. Prof. Alfredo Balena 190, Belo Horizonte, Minas Gerais, CEP: 30130-100, Brazil
| | - Marcelo Dias Sanches
- School of Medicine, Department of Surgery, Universidade Federal de Minas Gerais, Av. Prof. Alfredo Balena 190, Belo Horizonte, Minas Gerais, CEP: 30130-100, Brazil.,Hepatopancreatobiliary Division, Clinical Hospital, Universidade Federal de Minas Gerais, Av. Prof. Alfredo Balena 110, Belo Horizonte, Minas Gerais, CEP: 30130-100, Brazil
| | - Vivian Resende
- School of Medicine, Department of Surgery, Universidade Federal de Minas Gerais, Av. Prof. Alfredo Balena 190, Belo Horizonte, Minas Gerais, CEP: 30130-100, Brazil.,Hepatopancreatobiliary Division, Clinical Hospital, Universidade Federal de Minas Gerais, Av. Prof. Alfredo Balena 110, Belo Horizonte, Minas Gerais, CEP: 30130-100, Brazil
| | - Geovanni D. Cassali
- Department of General Pathology, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte, Minas Gerais, CEP: 31270-901, Brazil.,Corresponding author: Department of General Pathology, Instituto de Ciências Biológicas, Bloco C3, Sala 102, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627 Belo Horizonte–MG, Brazil 31270-901. Tel: +55 31 34092891.
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8
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The basis of nuclear phospholipase C in cell proliferation. Adv Biol Regul 2021; 82:100834. [PMID: 34710785 DOI: 10.1016/j.jbior.2021.100834] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 10/17/2021] [Accepted: 10/21/2021] [Indexed: 11/23/2022]
Abstract
Ca2+ is a highly versatile intracellular signal that regulates many biological processes such as cell death and proliferation. Broad Ca2+-signaling machinery is used to assemble signaling systems with a precise spatial and temporal resolution to achieve this versatility. Ca2+-signaling components can be organized in different regions of the cell and local increases in Ca2+ within the nucleus can regulate different cellular functions from the increases in cytosolic Ca2+. However, the mechanisms and pathways that promote localized increases in Ca2+ levels in the nucleus are still under investigation. This review presents evidence that the nucleus has its own Ca2+ stores and signaling machinery, which modulate processes such as cell proliferation and tumor growth. We focus on what is known about the functions of nuclear Phospholipase C (PLC) in the generation of nuclear Ca2+ transients that are involved in cell proliferation.
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9
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Ramanayake-Mudiyanselage V, Embogama DM, Pflum MKH. Kinase-Catalyzed Biotinylation to Map Cell Signaling Pathways: Application to Epidermal Growth Factor Signaling. J Proteome Res 2021; 20:4852-4861. [PMID: 34491762 DOI: 10.1021/acs.jproteome.1c00562] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Cell signaling involves a network of protein-protein interactions and post-translational modifications that govern cellular responses to environmental cues. To understand and ultimately modulate these signaling pathways to confront disease, the complex web of proteins that becomes phosphorylated after extracellular stimulation has been studied using mass spectrometry-based proteomics methods. To complement prior work and fully characterize all phosphorylated proteins after the stimulation of cell signaling, we developed K-BMAPS (kinase-catalyzed biotinylation to map signaling), which utilizes ATP-biotin as a kinase cosubstrate to biotin label substrates. As a first application of the K-BMAPS method, the well-characterized epidermal growth factor receptor (EGFR) kinase signaling pathway was monitored by treating epidermal growth factor (EGF)-stimulated HeLa lysates with ATP-biotin, followed by streptavidin enrichment and quantitative mass spectrometry analysis. On the basis of the dynamic phosphoproteins identified, a pathway map was developed considering functional categories and known interactors of EGFR. Remarkably, 94% of the K-BMAPS hit proteins were included in the EGFR pathway map. With many proteins involved in transcription, translation, cell adhesion, and GTPase signaling, K-BMAPS identified phosphoproteins were associated with late and continuous signaling events. In summary, the K-BMAPS method is a powerful tool to map the dynamic phosphorylation governing cell signaling pathways.
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Affiliation(s)
| | - D Maheeka Embogama
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, Michigan 48202, United States
| | - Mary Kay H Pflum
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, Michigan 48202, United States
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10
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de Miranda MC, Ferreira ADF, de Melo MIA, Kunrath-Lima M, Goes AMD, Rodrigues MA, Gomes DA, Faria JAQA. Adipose-derived stem/stromal cell secretome modulates breast cancer cell proliferation and differentiation state towards aggressiveness. Biochimie 2021; 191:69-77. [PMID: 34454978 DOI: 10.1016/j.biochi.2021.08.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 06/29/2021] [Accepted: 08/24/2021] [Indexed: 11/18/2022]
Abstract
It is becoming increasingly evident that mesenchymal stem/stromal cells are recruited by cancer cells from nearby endogenous host stroma and promote events such as tumor proliferation, angiogenesis, invasion, and metastasis, as well as mediate therapeutic resistance. Consequently, understanding the regulatory mechanisms of ASCs that influence the tumor microenvironment may provide an avenue for further treatment. To understand the role of the ASC secretome in breast cancer cell proliferation, death, and phenotype alteration, adipose-derived stem cell-conditioned medium (mASC) was used to cultivate MCF-7 and MDA-MB-231 cells. These breast cancer cells in mASC showed a shorter doubling time, higher frequency of EdU positivity, and higher levels of phosphorylated histone 3. In addition, increased expression of cyclin B1 was observed, suggesting that proliferation was induced. The mASC was also able to increase apoptosis in MCF-7 cells, which was confirmed by caspase-7 activation. The number of tumor-initiating cells (CD44+ CD24-/low) and migration capacity were increased in cells cultivated in mASC. These data collectively suggest that ASC-conditioned medium can induce selective pressure by increasing cell proliferation, giving rise to a more aggressive phenotype in MCF-7 and MDA-MB-231 cells. Our study provides a foundation for further elucidation of the precise mechanism underlying ASCs in breast cancer cells and the modulation of ASCs in potential therapeutic uses.
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Affiliation(s)
- Marcelo Coutinho de Miranda
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Andrea da Fonseca Ferreira
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Mariane Izabella Abreu de Melo
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Marianna Kunrath-Lima
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Alfredo Miranda de Goes
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Michele Angela Rodrigues
- Departamento de Patologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Dawidson Assis Gomes
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
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11
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Mozolewski P, Jeziorek M, Schuster CM, Bading H, Frost B, Dobrowolski R. The role of nuclear Ca2+ in maintaining neuronal homeostasis and brain health. J Cell Sci 2021; 134:jcs254904. [PMID: 33912918 PMCID: PMC8084578 DOI: 10.1242/jcs.254904] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Nuclear Ca2+ has emerged as one of the most potent mediators of the dialogue between neuronal synapses and the nucleus that regulates heterochromatin states, transcription factor activity, nuclear morphology and neuronal gene expression induced by synaptic activity. Recent studies underline the importance of nuclear Ca2+ signaling in long-lasting, activity-induced adaptation and maintenance of proper brain function. Diverse forms of neuroadaptation require transient nuclear Ca2+ signaling and cyclic AMP-responsive element-binding protein (CREB1, referred to here as CREB) as its prime target, which works as a tunable switch to drive and modulate specific gene expression profiles associated with memory, pain, addiction and neuroprotection. Furthermore, a reduction of nuclear Ca2+ levels has been shown to be neurotoxic and a causal factor driving the progression of neurodegenerative disorders, as well as affecting neuronal autophagy. Because of its central role in the brain, deficits in nuclear Ca2+ signaling may underlie a continuous loss of neuroprotection in the aging brain, contributing to the pathophysiology of Alzheimer's disease. In this Review, we discuss the principles of the 'nuclear calcium hypothesis' in the context of human brain function and its role in controlling diverse forms of neuroadaptation and neuroprotection. Furthermore, we present the most relevant and promising perspectives for future studies.
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Affiliation(s)
- Pawel Mozolewski
- Department of Biological Sciences, Rutgers University, Newark, NJ 07102, USA
| | - Maciej Jeziorek
- Department of Biological Sciences, Rutgers University, Newark, NJ 07102, USA
| | - Christoph M. Schuster
- Department of Neurobiology, Interdisciplinary Center for Neurosciences (IZN), Heidelberg University, INF 345 and INF 366, 69120 Heidelberg, Germany
| | - Hilmar Bading
- Department of Neurobiology, Interdisciplinary Center for Neurosciences (IZN), Heidelberg University, INF 345 and INF 366, 69120 Heidelberg, Germany
| | - Bess Frost
- Glenn Biggs Institute for Alzheimer's and Neurodegenerative Diseases, University of Texas Health, San Antonio, San Antonio, TX 78229, USA
- Sam and Ann Barshop Institute for Longevity and Aging Studies, Department of Cell Systems and Anatomy, University of Texas Health, San Antonio, San Antonio, TX 78229, USA
| | - Radek Dobrowolski
- Department of Biological Sciences, Rutgers University, Newark, NJ 07102, USA
- Glenn Biggs Institute for Alzheimer's and Neurodegenerative Diseases, University of Texas Health, San Antonio, San Antonio, TX 78229, USA
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12
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Simultaneous readout of multiple FRET pairs using photochromism. Nat Commun 2021; 12:2005. [PMID: 33790271 PMCID: PMC8012603 DOI: 10.1038/s41467-021-22043-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 02/17/2021] [Indexed: 01/11/2023] Open
Abstract
Förster resonant energy transfer (FRET) is a powerful mechanism to probe associations in situ. Simultaneously performing more than one FRET measurement can be challenging due to the spectral bandwidth required for the donor and acceptor fluorophores. We present an approach to distinguish overlapping FRET pairs based on the photochromism of the donor fluorophores, even if the involved fluorophores display essentially identical absorption and emission spectra. We develop the theory underlying this method and validate our approach using numerical simulations. To apply our system, we develop rsAKARev, a photochromic biosensor for cAMP-dependent protein kinase (PKA), and combine it with the spectrally-identical biosensor EKARev, a reporter for extracellular signal-regulated kinase (ERK) activity, to deliver simultaneous readout of both activities in the same cell. We further perform multiplexed PKA, ERK, and calcium measurements by including a third, spectrally-shifted biosensor. Our work demonstrates that exploiting donor photochromism in FRET can be a powerful approach to simultaneously read out multiple associations within living cells. Performing multiple FRET measurements at once can be challenging. Here the authors report a method to discriminate between overlapping FRET pairs, even if the fluorophores display almost identical absorption and emission spectra, based on the photochromism of the donor fluorophores.
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Rodrigues MA, Caldeira-Brant AL, Gomes DA, Silveira TL, Chiarini-Garcia H, Cassali GD. Characterization of neoplastic cells outlining the cystic space of invasive micropapillary carcinoma of the canine mammary gland. BMC Vet Res 2021; 17:130. [PMID: 33761962 PMCID: PMC7992814 DOI: 10.1186/s12917-021-02807-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 02/19/2021] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Invasive micropapillary carcinoma (IMPC) is a rare malignant breast tumor and a variant form of invasive ductal carcinoma that is an aggressive neoplasm of the human breast and canine mammary gland. The importance of the tumor microenvironment in cancer development has gradually been recognized, but little is known about the cell types outlining the cystic space of canine IMPC. This study aimed to characterize the neoplastic cells outlining the cystic space of IMPC. RESULTS Immunohistochemistry (IHC), immunofluorescence (IF), superresolution and transmission electron microscopy (TEM) were used to assess the cell types in the cystic areas of IMPCs. Cells expressing the mesenchymal markers alpha-smooth muscle actin (αSMA), Vimentin, and S100A4 outlined the cystic space of IMPC. Furthermore, loss of epithelial cell polarity in IMPC was shown by the localization of MUC1 at the stroma-facing surface. This protein modulates lumen formation and inhibits the cell-stroma interaction. Immunohistochemical and IF staining for the myoepithelial cell marker p63 were negative in IMPC samples. Furthermore, associated with peculiar morphology, such as thin cytoplasmic extensions outlining cystic spaces, was observed under TEM. These observations suggested cells with characteristics of myoepithelial-like cells. CONCLUSIONS The cells outlining the cystic space of IMPC in the canine mammary gland were characterized using IHC, IF and TEM. The presence of cells expressing αSMA, Vimentin, and S100A4 in the IMPC stroma suggested a role for tumor-associated fibroblasts in the IMPC microenvironment. The reversal of cell polarity revealed by the limited basal localization of MUC1 may be an important factor contributing to the invasiveness of IMPC. For the first time, the cystic space of canine mammary gland IMPC was shown to be delimited by myoepithelial-like cells that had lost p63 expression. These findings may enhance our understanding of the cellular microenvironment of invasive tumors to improve cancer diagnosis and treatment.
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Affiliation(s)
- Michele A Rodrigues
- Department of General Pathology, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte, Minas Gerais, CEP: 31270-901, Brazil
| | - Andre L Caldeira-Brant
- Department of Morphology, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte, Minas Gerais, CEP: 31270-901, Brazil
| | - Dawidson A Gomes
- Department of Biochemistry and Immunology, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte, Minas Gerais, CEP: 31270-901, Brazil
| | - Tatiany L Silveira
- Department of General Pathology, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte, Minas Gerais, CEP: 31270-901, Brazil
| | - Hélio Chiarini-Garcia
- Department of Morphology, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte, Minas Gerais, CEP: 31270-901, Brazil
| | - Geovanni D Cassali
- Department of General Pathology, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte, Minas Gerais, CEP: 31270-901, Brazil.
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Lin CC, Huang YK, Cho CF, Lin YS, Lo CC, Kuo TT, Tseng GC, Cheng WC, Chang WC, Hsiao TH, Lai LC, Shih JY, Liu YH, Chao KC, Hsu JL, Lee PC, Sun X, Hung MC, Sher YP. Targeting positive feedback between BASP1 and EGFR as a therapeutic strategy for lung cancer progression. Theranostics 2020; 10:10925-10939. [PMID: 33042262 PMCID: PMC7532684 DOI: 10.7150/thno.49425] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Accepted: 08/18/2020] [Indexed: 02/06/2023] Open
Abstract
Rationale: Brain metastasis in patients with lung cancer is life-threatening. However, the molecular mechanism for this catastrophic disease remains elusive, and few druggable targets are available. Therefore, this study aimed to identify and characterize proteins that could be used as therapeutic targets. Methods: Proteomic analyses were conducted to identify differentially expressed membrane proteins between brain metastatic lung cancer cells and primary lung cancer cells. A neuronal growth-associated protein, brain acid soluble protein 1 (BASP1), was chosen for further investigation. The clinical relevance of BASP1 in lung adenocarcinoma was first assessed. Tyrosine kinase activity assays and in vitro and in vivo functional assays were conducted to explore the oncogenic mechanisms of BASP1. Results: The protein levels of BASP1 were positively associated with tumor progression and poor prognosis in patients with lung adenocarcinoma. Membrane-bound BASP1 increased EGFR signaling and stabilized EGFR proteins by facilitating their escape from the ubiquitin-proteasome pathway. Reciprocally, activation of EGFR recruited more BASP1 to the plasma membrane, generating a positive feedback loop between BASP1 and EGFR. Moreover, the synergistic therapeutic effects of EGFR tyrosine kinase inhibitor and arsenic trioxide led to a reduction in the level of BASP1 protein observed in lung cancer cells with acquired resistance to EGFR inhibitors. Conclusions: The reciprocal interaction between BASP1 and EGFR facilitates EGFR signaling in brain metastatic lung cancer. Targeting the newly identified BASP1-EGFR interaction could open new venues for lung cancer treatment.
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Type 3 inositol 1,4,5-trisphosphate receptor: A calcium channel for all seasons. Cell Calcium 2019; 85:102132. [PMID: 31790953 DOI: 10.1016/j.ceca.2019.102132] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 11/21/2019] [Accepted: 11/22/2019] [Indexed: 12/18/2022]
Abstract
Inositol 1,4,5 trisphosphate receptors (ITPRs) are a family of endoplasmic reticulum Ca2+ channels essential for the control of intracellular Ca2+ levels in virtually every mammalian cell type. The three isoforms (ITPR1, ITPR2 and ITPR3) are highly homologous in amino acid sequence, but they differ considerably in terms of biophysical properties, subcellular localization, and tissue distribution. Such differences underscore the variety of cellular responses triggered by each isoform and suggest that the expression/activity of specific isoforms might be linked to particular pathophysiological states. Indeed, recent findings demonstrate that changes in expression of ITPR isoforms are associated with a number of human diseases ranging from fatty liver disease to cancer. ITPR3 is emerging as the isoform that is particularly important in the pathogenesis of various human diseases. Here we review the physiological and pathophysiological roles of ITPR3 in various tissues and the mechanisms by which the expression of this isoform is modulated in health and disease.
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