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Zhuang X, Martin TA, Ruge F, Zeng J(J, Li X(A, Khan E, Dou Q, Davies E, Jiang WG. Expression of Claudin-9 (CLDN9) in Breast Cancer, the Clinical Significance in Connection with Its Subcoat Anchorage Proteins ZO-1 and ZO-3 and Impact on Drug Resistance. Biomedicines 2023; 11:3136. [PMID: 38137355 PMCID: PMC10740911 DOI: 10.3390/biomedicines11123136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 11/17/2023] [Accepted: 11/20/2023] [Indexed: 12/24/2023] Open
Abstract
(1) Introduction: Claudin-9 (CLDN9) is a member of the claudin protein family, a critical transmembrane protein family for tight junctions that are implemented in the progression of numerous cancer types. The present study investigated the role that CLDN9, along with the subcoat proteins, Zonula Occludens (ZOs), plays in clinical breast cancer and subsequent impact on drug response of patients. (2) Methods: CLDN9 protein and CLDN9 transcript were determined and correlated with clinical and pathological indicators, together with the status of hormonal receptors. The levels of CLDN9 transcript were also assessed against the therapeutic responses of the patients to chemotherapies by using a dataset from the TCGA database. Breast cancer cell models, representing different molecular subtypes of breast cancer, with differential expression of CLDN9 were created and used to assess the biological impact and response to chemotherapeutic drugs. (3) Results: Breast cancer tissues expressed significantly higher levels of the CLDN9, with the high levels being associated with shorter survival. CLDN9 was significantly correlated with its anchorage proteins ZO-1 and ZO-3. Integrated expression of CLDN9, ZO-1 and ZO-3 formed a signature that was significantly linked to overall survival (OS) (p = 0.013) and relapse-free survival (RFS) (p = 0.024) in an independent matter. CLDN9 transcript was significantly higher in patients who were resistant to chemotherapies (p < 0.000001). CLDN9 connection to chemoresistance was particularly prominent in patients of ER-positive (ER(+)), Her-2-negative((Her-2(-)), ER(+)/Her-2(-) and triple-negative breast cancers (TNBCs), but not in patients with HER-2-positive tumors. In Her-2-negative MCF7 and MDA-MB-231 cancer cells, loss of CLDN9 significantly increased sensitivity to several chemotherapeutic drugs including paclitaxel, gemcitabine and methotrexate, which was not seen in Her-2(+) SKBR3 cells. However, suppressing Her-2 using neratinib, a permanent Her-2 inhibitor, sensitized cellular response to these chemodrugs in cells with CLDN9 knockdown. (4) Conclusions: CLDN9 is an important prognostic indicator for patients with breast cancer and also a pivotal factor in assessing patient responses to chemotherapies. Her-2 is a negating factor for the treatment response prediction value by CLDN9 and negating Her-2 and CLDN9 may enhance breast cancer cellular response to chemotherapeutic drugs.
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Affiliation(s)
- Xinguo Zhuang
- School of Medicine, Cardiff University, Cardiff CF14 4XN, UK; (X.Z.); (T.A.M.); (F.R.); (X.L.); or (Q.D.)
- Department of Clinical Laboratory, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361003, China
| | - Tracey A. Martin
- School of Medicine, Cardiff University, Cardiff CF14 4XN, UK; (X.Z.); (T.A.M.); (F.R.); (X.L.); or (Q.D.)
| | - Fiona Ruge
- School of Medicine, Cardiff University, Cardiff CF14 4XN, UK; (X.Z.); (T.A.M.); (F.R.); (X.L.); or (Q.D.)
| | - Jianyuan (Jimmy) Zeng
- School of Medicine, Cardiff University, Cardiff CF14 4XN, UK; (X.Z.); (T.A.M.); (F.R.); (X.L.); or (Q.D.)
| | - Xinyu (Amber) Li
- School of Medicine, Cardiff University, Cardiff CF14 4XN, UK; (X.Z.); (T.A.M.); (F.R.); (X.L.); or (Q.D.)
| | - Elyas Khan
- Karmanos Cancer Institute, Department of Oncology, School of Medicine, Wayne State University, Detroit, MI 48201, USA;
| | - Qingping Dou
- School of Medicine, Cardiff University, Cardiff CF14 4XN, UK; (X.Z.); (T.A.M.); (F.R.); (X.L.); or (Q.D.)
- Karmanos Cancer Institute, Department of Oncology, School of Medicine, Wayne State University, Detroit, MI 48201, USA;
| | - Eleri Davies
- Wales Breast Centre, University Llandough Hospital, Cardiff and Vales University Health Board, Cardiff CF64 2XX, UK;
| | - Wen G. Jiang
- School of Medicine, Cardiff University, Cardiff CF14 4XN, UK; (X.Z.); (T.A.M.); (F.R.); (X.L.); or (Q.D.)
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Abstract
Sequential expression of claudins, a family of tight junction proteins, along the nephron mirrors the sequential expression of ion channels and transporters. Only by the interplay of transcellular and paracellular transport can the kidney efficiently maintain electrolyte and water homeostasis in an organism. Although channel and transporter defects have long been known to perturb homeostasis, the contribution of individual tight junction proteins has been less clear. Over the past two decades, the regulation and dysregulation of claudins have been intensively studied in the gastrointestinal tract. Claudin expression patterns have, for instance, been found to be affected in infection and inflammation, or in cancer. In the kidney, a deeper understanding of the causes as well as the effects of claudin expression alterations is only just emerging. Little is known about hormonal control of the paracellular pathway along the nephron, effects of cytokines on renal claudin expression or relevance of changes in paracellular permeability to the outcome in any of the major kidney diseases. By summarizing current findings on the role of specific claudins in maintaining electrolyte and water homeostasis, this Review aims to stimulate investigations on claudins as prognostic markers or as druggable targets in kidney disease.
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Affiliation(s)
- Luca Meoli
- Clinical Physiology/Nutritional Medicine, Medical Department, Division of Gastroenterology, Infectiology, Rheumatology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Dorothee Günzel
- Clinical Physiology/Nutritional Medicine, Medical Department, Division of Gastroenterology, Infectiology, Rheumatology, Charité - Universitätsmedizin Berlin, Berlin, Germany.
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Wang L, Bayinchahan B, Zhang D, Wang Z, Xiao D. The novel biomarker circ_0020339 drives septic acute kidney injury by targeting miR-17-5p/IPMK axis. Int Urol Nephrol 2023; 55:437-448. [PMID: 35986866 DOI: 10.1007/s11255-022-03331-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Accepted: 07/25/2022] [Indexed: 01/25/2023]
Abstract
PURPOSE Sepsis is a systemic life-threatening inflammatory disease, which leads to septic acute kidney injury (AKI). Circular RNAs (circRNAs) are involved in septic AKI. Herein, we aimed to expound the action of circ_0020339 in septic AKI. The dysregulation of plasma circRNAs between patients with septic non-AKI and patients with septic AKI were screened by circRNA chip. METHODS The dysregulation of circ_0020339, microRNA (miR)-17-5p, and inositol polyphosphate multi kinase (IPMK) mRNA was detected by quantitative real-time polymerase chain reaction (qRT-PCR). Cell viability and apoptosis were measured by cell counting kit-8 (CCK-8) and flow cytometry, respectively. The release of serum creatinine (SCr), tissue inhibitor metalloproteinase-2 (TIMP-2), insulin-like growth factor binding protein-7 (IGFBP7), tumor necrosis factor (TNF)α and interleukin (IL)-1β was evaluated by enzyme-linked immunosorbent assay (ELISA). Bioinformatic analysis, dual-luciferase reporter assay and miRNA pull down assay were used to confirm the interaction between miR-17-5p and circ_0020339 or IPMK 3'untranslated region (UTR). Protein level of IPMK, TNF receptor-associated factor 6 (TRAF6), phosphorylated AKT (p-AKT)/total (t)-AKT, p-nuclear factor kappa-B (NF-κB) kinase (p-IKK)/t-IKK, p-inhibitor of NF-κB (p-IκB)α/t-IκBα, and p-p65/t-p65 were conducted by western blot. RESULTS Circ_0020339 was upregulated in the plasma of patients with septic AKI as well as LPS-treated HK2 cells and C57BL/6 mice relative to the corresponding counterparts. Functionally, circ_0020339 was positively correlated with markers of renal functional injury and inflammation in patients with septic AKI; si-circ_0020339 facilitated cell proliferation, while restrained cell apoptosis and inflammation in LPS-triggered HK2 cells; meanwhile, si-circ_0020339 restrained survival rate, renal functional injury and inflammation in LPS-triggered C57BL/6 mice. Furthermore, circ_0020339 and IPMK 3'UTR shared the same complementary sites with miR-17-5p. CONCLUSION si-circ_0020339 attenuated LPS-induced cell damage by targeting miR-17-5p/IPMK axis and inactivation of TRAF6/p-AKT/p-IKK/p-IκBα/p-p65. Altogether, plasma circ_0020339 serves as a novel diagnostic marker of patients with septic AKI.
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Affiliation(s)
- Lu Wang
- Department of Critical Care, People's Hospital of Xinjiang Uygur Autonomous Region, No. 91 Tianchi Road, Urumqi, 830001, Xinjiang, China
| | - Boranyi Bayinchahan
- Department of Critical Care, People's Hospital of Xinjiang Uygur Autonomous Region, No. 91 Tianchi Road, Urumqi, 830001, Xinjiang, China
| | - Daquan Zhang
- Department of Critical Care, People's Hospital of Xinjiang Uygur Autonomous Region, No. 91 Tianchi Road, Urumqi, 830001, Xinjiang, China
| | - Zhigao Wang
- Department of Critical Care, People's Hospital of Xinjiang Uygur Autonomous Region, No. 91 Tianchi Road, Urumqi, 830001, Xinjiang, China
| | - Dong Xiao
- Department of Critical Care, People's Hospital of Xinjiang Uygur Autonomous Region, No. 91 Tianchi Road, Urumqi, 830001, Xinjiang, China.
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Molema G, Zijlstra JG, van Meurs M, Kamps JAAM. Renal microvascular endothelial cell responses in sepsis-induced acute kidney injury. Nat Rev Nephrol 2022; 18:95-112. [PMID: 34667283 DOI: 10.1038/s41581-021-00489-1] [Citation(s) in RCA: 48] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/10/2021] [Indexed: 12/29/2022]
Abstract
Microvascular endothelial cells in the kidney have been a neglected cell type in sepsis-induced acute kidney injury (sepsis-AKI) research; yet, they offer tremendous potential as pharmacological targets. As endothelial cells in distinct cortical microvascular segments are highly heterogeneous, this Review focuses on endothelial cells in their anatomical niche. In animal models of sepsis-AKI, reduced glomerular blood flow has been attributed to inhibition of endothelial nitric oxide synthase activation in arterioles and glomeruli, whereas decreased cortex peritubular capillary perfusion is associated with epithelial redox stress. Elevated systemic levels of vascular endothelial growth factor, reduced levels of circulating sphingosine 1-phosphate and loss of components of the glycocalyx from glomerular endothelial cells lead to increased microvascular permeability. Although coagulation disbalance occurs in all microvascular segments, the molecules involved differ between segments. Induction of the expression of adhesion molecules and leukocyte recruitment also occurs in a heterogeneous manner. Evidence of similar endothelial cell responses has been found in kidney and blood samples from patients with sepsis. Comprehensive studies are needed to investigate the relationships between segment-specific changes in the microvasculature and kidney function loss in sepsis-AKI. The application of omics technologies to kidney tissues from animals and patients will be key in identifying these relationships and in developing novel therapeutics for sepsis.
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Affiliation(s)
- Grietje Molema
- Dept. Pathology and Medical Biology, Medical Biology section, University Medical Center Groningen, University of Groningen, Groningen, Netherlands.
| | - Jan G Zijlstra
- Dept. Critical Care, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Matijs van Meurs
- Dept. Pathology and Medical Biology, Medical Biology section, University Medical Center Groningen, University of Groningen, Groningen, Netherlands.,Dept. Critical Care, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Jan A A M Kamps
- Dept. Pathology and Medical Biology, Medical Biology section, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
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Grigoryan R, Costas-Rodríguez M, Van Wonterghem E, Vandenbroucke RE, Vanhaecke F. Effect of Endotoxemia Induced by Intraperitoneal Injection of Lipopolysaccharide on the Mg isotopic Composition of Biofluids and Tissues in Mice. Front Med (Lausanne) 2021; 8:664666. [PMID: 34368182 PMCID: PMC8342922 DOI: 10.3389/fmed.2021.664666] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 06/22/2021] [Indexed: 12/02/2022] Open
Abstract
Endotoxemia induced in vivo in mice by intraperitoneal injection of lipopolysaccharide (LPS) leads to (neuro)inflammation and sepsis. Also the homeostasis of mineral elements can be altered through mechanisms that still are poorly understood. The isotopic composition of Mg and the concentrations of the minor elements Ca, K, Mg, Na, P, and S were determined in biological fluids and tissues of young (14–28 weeks) and aged (40–65 weeks) LPS-injected mice and age-matched controls to reveal potential effects of the LPS-induced infection. Blood plasma of young and aged LPS-injected mice showed a heavy Mg isotopic composition, as well as elevated Mg and P concentrations, compared to matched controls. The plasma Mg isotopic composition was correlated with the P concentration in aged mice. Also the liver Mg isotopic composition was strongly affected in the young and aged LPS-injected mice, while for aged mice, an additional effect on the urine Mg isotopic composition was established. These observations were hypothetically associated with liver inflammation and/or hepatotoxicity, and reduced urinary Mg excretion, respectively. Also a regional endotoxin-induced difference was observed in the brain Mg isotopic composition for the aged mice only, and was attributed to potential disruption of the blood-brain barrier.
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Affiliation(s)
- Rosa Grigoryan
- Atomic & Mass Spectrometry - A&MS Research Unit, Department of Chemistry, Ghent University, Ghent, Belgium
| | - Marta Costas-Rodríguez
- Atomic & Mass Spectrometry - A&MS Research Unit, Department of Chemistry, Ghent University, Ghent, Belgium
| | - Elien Van Wonterghem
- Atomic & Mass Spectrometry - A&MS Research Unit, Department of Chemistry, Ghent University, Ghent, Belgium
| | - Roosmarijn E Vandenbroucke
- Vlaams Instituut voor Biotechnologie (VIB) Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Frank Vanhaecke
- Atomic & Mass Spectrometry - A&MS Research Unit, Department of Chemistry, Ghent University, Ghent, Belgium
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Time-Dependent miRNA Profile during Septic Acute Kidney Injury in Mice. Int J Mol Sci 2020; 21:ijms21155316. [PMID: 32727087 PMCID: PMC7432314 DOI: 10.3390/ijms21155316] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Accepted: 07/25/2020] [Indexed: 12/11/2022] Open
Abstract
(1) Background: Lipopolysaccharide (LPS)-induced systemic inflammation is associated with septic acute kidney injury (AKI). We investigated the time-dependent miRNA expression changes in the kidney caused by LPS. (2) Methods: Male outbred NMRI mice were injected with LPS and sacrificed at 1.5 and 6 h (40 mg/kg i.p., early phase, EP) or at 24 and 48 h (10 mg/kg i.p., late phase, LP). The miRNA profile was established using miRCURY LNA™ microarray and confirmed with qPCR. Total renal proteome was analyzed by LC-MS/MS (ProteomeXchange: PXD014664). (3) Results: Septic AKI was confirmed by increases in plasma urea concentration and in renal TNF-α and IL-6 mRNA expression. Most miRNAs were altered at 6 and 24 h and declined by 48 h. In EP miR-762 was newly identified and validated and was the most elevated miRNA. The predicted target of miR-762, Ras related GTPase 1B (Sar1b) was downregulated. In LP miR-21a-5p was the most influenced miRNA followed by miR-451a, miR-144-3p, and miR-146a-5p. Among the potential protein targets of the most influenced miRNAs, only aquaporin-1, a target of miR-144-3p was downregulated at 24 h. (4) Conclusion: Besides already known miRNAs, septic AKI upregulated miR-762, which may regulate GTP signaling, and miR-144-3p and downregulated its target, aquaporin-1.
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