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de Pellegars-Malhortie A, Picque Lasorsa L, Mazard T, Granier F, Prévostel C. Why Is Wnt/β-Catenin Not Yet Targeted in Routine Cancer Care? Pharmaceuticals (Basel) 2024; 17:949. [PMID: 39065798 PMCID: PMC11279613 DOI: 10.3390/ph17070949] [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: 06/07/2024] [Revised: 07/04/2024] [Accepted: 07/11/2024] [Indexed: 07/28/2024] Open
Abstract
Despite significant progress in cancer prevention, screening, and treatment, the still limited number of therapeutic options is an obstacle towards increasing the cancer cure rate. In recent years, many efforts were put forth to develop therapeutics that selectively target different components of the oncogenic Wnt/β-catenin signaling pathway. These include small molecule inhibitors, antibodies, and more recently, gene-based approaches. Although some of them showed promising outcomes in clinical trials, the Wnt/β-catenin pathway is still not targeted in routine clinical practice for cancer management. As for most anticancer treatments, a critical limitation to the use of Wnt/β-catenin inhibitors is their therapeutic index, i.e., the difficulty of combining effective anticancer activity with acceptable toxicity. Protecting healthy tissues from the effects of Wnt/β-catenin inhibitors is a major issue due to the vital role of the Wnt/β-catenin signaling pathway in adult tissue homeostasis and regeneration. In this review, we provide an up-to-date summary of clinical trials on Wnt/β-catenin pathway inhibitors, examine their anti-tumor activity and associated adverse events, and explore strategies under development to improve the benefit/risk profile of this therapeutic approach.
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Affiliation(s)
- Auriane de Pellegars-Malhortie
- IRCM (Montpellier Cancer Research Institute), University of Montpellier, Inserm, ICM (Montpellier Regional Cancer Institute), 34298 Montpellier, CEDEX 5, France; (A.d.P.-M.); (L.P.L.); (T.M.)
| | - Laurence Picque Lasorsa
- IRCM (Montpellier Cancer Research Institute), University of Montpellier, Inserm, ICM (Montpellier Regional Cancer Institute), 34298 Montpellier, CEDEX 5, France; (A.d.P.-M.); (L.P.L.); (T.M.)
| | - Thibault Mazard
- IRCM (Montpellier Cancer Research Institute), University of Montpellier, Inserm, ICM (Montpellier Regional Cancer Institute), 34298 Montpellier, CEDEX 5, France; (A.d.P.-M.); (L.P.L.); (T.M.)
- Medical Oncology Department, ICM, University of Montpellier, CEDEX 5, 34298 Montpellier, France
| | | | - Corinne Prévostel
- IRCM (Montpellier Cancer Research Institute), University of Montpellier, Inserm, ICM (Montpellier Regional Cancer Institute), 34298 Montpellier, CEDEX 5, France; (A.d.P.-M.); (L.P.L.); (T.M.)
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2
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Samant C, Kale R, Pai KSR, Nandakumar K, Bhonde M. Role of Wnt/β-catenin pathway in cancer drug resistance: Insights into molecular aspects of major solid tumors. Biochem Biophys Res Commun 2024; 729:150348. [PMID: 38986260 DOI: 10.1016/j.bbrc.2024.150348] [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: 04/27/2024] [Revised: 06/23/2024] [Accepted: 07/03/2024] [Indexed: 07/12/2024]
Abstract
Adaptive resistance to conventional and targeted therapies remains one of the major obstacles in the effective management of cancer. Aberrant activation of key signaling mechanisms plays a pivotal role in modulating resistance to drugs. An evolutionarily conserved Wnt/β-catenin pathway is one of the signaling cascades which regulate resistance to drugs. Elevated Wnt signaling confers resistance to anticancer therapies, either through direct activation of its target genes or via indirect mechanisms and crosstalk over other signaling pathways. Involvement of the Wnt/β-catenin pathway in cancer hallmarks like inhibition of apoptosis, promotion of invasion and metastasis and cancer stem cell maintenance makes this pathway a potential target to exploit for addressing drug resistance. Accumulating evidences suggest a critical role of Wnt/β-catenin pathway in imparting resistance across multiple cancers including PDAC, NSCLC, TNBC, etc. Here we present a comprehensive assessment of how Wnt/β-catenin pathway mediates cancer drug resistance in majority of the solid tumors. We take a deep dive into the Wnt/β-catenin signaling-mediated modulation of cellular and downstream molecular mechanisms and their impact on cancer resistance.
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Affiliation(s)
- Charudatt Samant
- Department of Pharmacology, Novel Drug Discovery and Development (NDDD), Lupin Limited, Survey No. 46A/47A, Village Nande, Taluka Mulshi, Pune, 412115, Maharashtra, India.
| | - Ramesh Kale
- Department of Pharmacology, Novel Drug Discovery and Development (NDDD), Lupin Limited, Survey No. 46A/47A, Village Nande, Taluka Mulshi, Pune, 412115, Maharashtra, India
| | - K Sreedhara Ranganath Pai
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education (MAHE), Manipal, Karnataka, 576104, India
| | - Krishnadas Nandakumar
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education (MAHE), Manipal, Karnataka, 576104, India
| | - Mandar Bhonde
- Department of Pharmacology, Novel Drug Discovery and Development (NDDD), Lupin Limited, Survey No. 46A/47A, Village Nande, Taluka Mulshi, Pune, 412115, Maharashtra, India
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Kazanietz MG, Cooke M. Protein kinase C signaling "in" and "to" the nucleus: Master kinases in transcriptional regulation. J Biol Chem 2024; 300:105692. [PMID: 38301892 PMCID: PMC10907189 DOI: 10.1016/j.jbc.2024.105692] [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: 10/23/2023] [Revised: 01/08/2024] [Accepted: 01/09/2024] [Indexed: 02/03/2024] Open
Abstract
PKC is a multifunctional family of Ser-Thr kinases widely implicated in the regulation of fundamental cellular functions, including proliferation, polarity, motility, and differentiation. Notwithstanding their primary cytoplasmic localization and stringent activation by cell surface receptors, PKC isozymes impel prominent nuclear signaling ultimately impacting gene expression. While transcriptional regulation may be wielded by nuclear PKCs, it most often relies on cytoplasmic phosphorylation events that result in nuclear shuttling of PKC downstream effectors, including transcription factors. As expected from the unique coupling of PKC isozymes to signaling effector pathways, glaring disparities in gene activation/repression are observed upon targeting individual PKC family members. Notably, specific PKCs control the expression and activation of transcription factors implicated in cell cycle/mitogenesis, epithelial-to-mesenchymal transition and immune function. Additionally, PKCs isozymes tightly regulate transcription factors involved in stepwise differentiation of pluripotent stem cells toward specific epithelial, mesenchymal, and hematopoietic cell lineages. Aberrant PKC expression and/or activation in pathological conditions, such as in cancer, leads to profound alterations in gene expression, leading to an extensive rewiring of transcriptional networks associated with mitogenesis, invasiveness, stemness, and tumor microenvironment dysregulation. In this review, we outline the current understanding of PKC signaling "in" and "to" the nucleus, with significant focus on established paradigms of PKC-mediated transcriptional control. Dissecting these complexities would allow the identification of relevant molecular targets implicated in a wide spectrum of diseases.
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Affiliation(s)
- Marcelo G Kazanietz
- Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.
| | - Mariana Cooke
- Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.
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Jovanović Stojanov S, Ntungwe EN, Dinić J, Podolski-Renić A, Pajović M, Rijo P, Pešić M. Coleon U, Isolated from Plectranthus mutabilis Codd., Decreases P-Glycoprotein Activity Due to Mitochondrial Inhibition. Pharmaceutics 2023; 15:1942. [PMID: 37514128 PMCID: PMC10385270 DOI: 10.3390/pharmaceutics15071942] [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: 05/30/2023] [Revised: 07/05/2023] [Accepted: 07/07/2023] [Indexed: 07/30/2023] Open
Abstract
Multidrug resistance in cancer is often mediated by P-glycoprotein. Natural compounds have been suggested as a fourth generation of P-glycoprotein inhibitors. Coleon U, isolated from Plectranthus mutabilis Codd., was reported to modulate P-glycoprotein activity but the underlying mechanism has not yet been revealed. Therefore, the effects of Coleon U on cell viability, proliferation, and cell death induction were studied in a non-small-cell lung carcinoma model comprising sensitive and multidrug-resistant cells with P-glycoprotein overexpression. P-glycoprotein activity and mitochondrial membrane potential were assessed by flow cytometry upon Coleon U, sodium-orthovanadate (an ATPase inhibitor), and verapamil (an ATPase stimulator) treatments. SwissADME was used to identify the pharmacokinetic properties of Coleon U, while P-glycoprotein expression was studied by immunofluorescence. Our results showed that Coleon U is not a P-glycoprotein substrate and is equally efficient in sensitive and multidrug-resistant cancer cells. A decrease in P-glycoprotein activity observed with Coleon U and verapamil after 72 h is antagonized in combination with sodium-orthovanadate. Coleon U induced a pronounced effect on mitochondrial membrane depolarization and showed a tendency to decrease P-glycoprotein expression. In conclusion, Coleon U-delayed effect on the decrease in P-glycoprotein activity is due to P-glycoprotein's functioning dependence on ATP production in mitochondria.
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Affiliation(s)
- Sofija Jovanović Stojanov
- Institute for Biological Research "Siniša Stanković"-National Institute of the Republic of Serbia, University of Belgrade, 11060 Belgrade, Serbia
| | - Epole N Ntungwe
- CBIOS (Research Center for Biosciences and Health Technologies), Universidade Lusófona de Humanidades e Tecnologias, Campo Grande 376, 1749-024 Lisbon, Portugal
- Department of Chemistry, University of Coimbra, P-3004-535 Coimbra, Portugal
| | - Jelena Dinić
- Institute for Biological Research "Siniša Stanković"-National Institute of the Republic of Serbia, University of Belgrade, 11060 Belgrade, Serbia
| | - Ana Podolski-Renić
- Institute for Biological Research "Siniša Stanković"-National Institute of the Republic of Serbia, University of Belgrade, 11060 Belgrade, Serbia
| | - Milica Pajović
- Institute for Biological Research "Siniša Stanković"-National Institute of the Republic of Serbia, University of Belgrade, 11060 Belgrade, Serbia
| | - Patrícia Rijo
- CBIOS (Research Center for Biosciences and Health Technologies), Universidade Lusófona de Humanidades e Tecnologias, Campo Grande 376, 1749-024 Lisbon, Portugal
| | - Milica Pešić
- Institute for Biological Research "Siniša Stanković"-National Institute of the Republic of Serbia, University of Belgrade, 11060 Belgrade, Serbia
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Martin-Vega A, Earnest S, Augustyn A, Wichaidit C, Gazdar A, Girard L, Peyton M, Kollipara RK, Minna JD, Johnson JE, Cobb MH. ASCL1-ERK1/2 Axis: ASCL1 restrains ERK1/2 via the dual specificity phosphatase DUSP6 to promote survival of a subset of neuroendocrine lung cancers. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.06.15.545148. [PMID: 37398419 PMCID: PMC10312738 DOI: 10.1101/2023.06.15.545148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/04/2023]
Abstract
The transcription factor achaete-scute complex homolog 1 (ASCL1) is a lineage oncogene that is central for the growth and survival of small cell lung cancers (SCLC) and neuroendocrine non-small cell lung cancers (NSCLC-NE) that express it. Targeting ASCL1, or its downstream pathways, remains a challenge. However, a potential clue to overcoming this challenage has been information that SCLC and NSCLC-NE that express ASCL1 exhibit extremely low ERK1/2 activity, and efforts to increase ERK1/2 activity lead to inhibition of SCLC growth and surival. Of course, this is in dramatic contrast to the majority of NSCLCs where high activity of the ERK pathway plays a major role in cancer pathogenesis. A major knowledge gap is defining the mechanism(s) underlying the low ERK1/2 activity in SCLC, determining if ERK1/2 activity and ASCL1 function are inter-related, and if manipulating ERK1/2 activity provides a new therapeutic strategy for SCLC. We first found that expression of ERK signaling and ASCL1 have an inverse relationship in NE lung cancers: knocking down ASCL1 in SCLCs and NE-NSCLCs increased active ERK1/2, while inhibition of residual SCLC/NSCLC-NE ERK1/2 activity with a MEK inhibitor increased ASCL1 expression. To determine the effects of ERK activity on expression of other genes, we obtained RNA-seq from ASCL1-expressing lung tumor cells treated with an ERK pathway MEK inhibitor and identified down-regulated genes (such as SPRY4, ETV5, DUSP6, SPRED1) that potentially could influence SCLC/NSCLC-NE tumor cell survival. This led us to discover that genes regulated by MEK inhibition suppress ERK activation and CHIP-seq demonstrated these are bound by ASCL1. In addition, SPRY4, DUSP6, SPRED1 are known suppressors of the ERK1/2 pathway, while ETV5 regulates DUSP6. Survival of NE lung tumors was inhibited by activation of ERK1/2 and a subset of ASCL1-high NE lung tumors expressed DUSP6. Because the dual specificity phosphatase 6 (DUSP6) is an ERK1/2-selective phosphatase that inactivates these kinases and has a pharmacologic inhibitor, we focused mechanistic studies on DUSP6. These studies showed: Inhibition of DUSP6 increased active ERK1/2, which accumulated in the nucleus; pharmacologic and genetic inhibition of DUSP6 affected proliferation and survival of ASCL1-high NE lung cancers; and that knockout of DUSP6 "cured" some SCLCs while in others resistance rapidly developed indicating a bypass mechanism was activated. Thus, our findings fill this knowledge gap and indicate that combined expression of ASCL1, DUSP6 and low phospho-ERK1/2 identify some neuroendocrine lung cancers for which DUSP6 may be a therapeutic target.
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A simplified analog of debromoaplysiatoxin lacking the B-ring of spiroketal moiety retains protein kinase C-binding and antiproliferative activities. Bioorg Med Chem 2022; 73:116988. [DOI: 10.1016/j.bmc.2022.116988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 08/23/2022] [Accepted: 08/24/2022] [Indexed: 11/20/2022]
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Black JD, Affandi T, Black AR, Reyland ME. PKCα and PKCδ: Friends and Rivals. J Biol Chem 2022; 298:102194. [PMID: 35760100 PMCID: PMC9352922 DOI: 10.1016/j.jbc.2022.102194] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 06/13/2022] [Accepted: 06/21/2022] [Indexed: 01/06/2023] Open
Abstract
PKC comprises a large family of serine/threonine kinases that share a requirement for allosteric activation by lipids. While PKC isoforms have significant homology, functional divergence is evident among subfamilies and between individual PKC isoforms within a subfamily. Here, we highlight these differences by comparing the regulation and function of representative PKC isoforms from the conventional (PKCα) and novel (PKCδ) subfamilies. We discuss how unique structural features of PKCα and PKCδ underlie differences in activation and highlight the similar, divergent, and even opposing biological functions of these kinases. We also consider how PKCα and PKCδ can contribute to pathophysiological conditions and discuss challenges to targeting these kinases therapeutically.
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Affiliation(s)
- Jennifer D Black
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE.
| | - Trisiani Affandi
- Department of Craniofacial Biology, School of Dental Medicine, University of Colorado Anschutz Medical Campus
| | - Adrian R Black
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE
| | - Mary E Reyland
- Department of Craniofacial Biology, School of Dental Medicine, University of Colorado Anschutz Medical Campus.
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Hsieh YY, Cheng YW, Wei PL, Yang PM. Repurposing of ingenol mebutate for treating human colorectal cancer by targeting S100 calcium-binding protein A4 (S100A4). Toxicol Appl Pharmacol 2022; 449:116134. [PMID: 35724704 DOI: 10.1016/j.taap.2022.116134] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2022] [Revised: 06/03/2022] [Accepted: 06/14/2022] [Indexed: 11/30/2022]
Abstract
Colorectal cancer (CRC) is the world's second most common cause of cancer-related death. Novel treatments are still urgently needed. S100 calcium-binding protein A4 (S100A4) was demonstrated to be an anticancer therapeutic target. Herein, we found that higher S100A4 expression was associated with a poorer prognosis in publicly available cohorts and a Taiwanese CRC patient cohort. To identify repurposed S100A4 inhibitors, we mined the Connectivity Map (CMap) database for clinical drugs mimicking the S100A4-knockdown gene signature. Ingenol mebutate, derived from the sap of the plant Euphorbia peplus, is approved as a topical treatment for actinic keratosis. The CMap analysis predicted ingenol mebutate as a potent S100A4 inhibitor. Indeed, both messenger RNA and protein levels of S100A4 were attenuated by ingenol mebutate in human CRC cells. In addition, CRC cells with higher S100A4 expressions and/or the wild-type p53 gene were more sensitive to ingenol mebutate, and their migration and invasion were inhibited by ingenol mebutate. Therefore, our results suggest the repurposing of ingenol mebutate for treating CRC by targeting S100A4.
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Affiliation(s)
- Yao-Yu Hsieh
- Division of Hematology and Oncology, Taipei Medical University Shuang Ho Hospital, New Taipei City 23561, Taiwan; Division of Hematology and Oncology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Ya-Wen Cheng
- TMU Research Center of Cancer Translational Medicine, Taipei Medical University, Taipei 11031, Taiwan; Department of R&D, Calgent Biotechnology Co., Ltd., Taipei 10675, Taiwan
| | - Po-Li Wei
- Department of Surgery, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan; Division of Colorectal Surgery, Department of Surgery, Taipei Medical University Hospital, Taipei Medical University, Taipei 11031, Taiwan; Cancer Research Center, Taipei Medical University Hospital, Taipei Medical University, Taipei 11031, Taiwan; Translational Laboratory, Department of Medical Research, Taipei Medical University Hospital, Taipei Medical University, Taipei 11031, Taiwan; Graduate Institute of Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan
| | - Pei-Ming Yang
- TMU Research Center of Cancer Translational Medicine, Taipei Medical University, Taipei 11031, Taiwan; Graduate Institute of Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan; PhD Program for Cancer Molecular Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University and Academia Sinica, Taipei 11031, Taiwan; Cancer Center, Wan Fang Hospital, Taipei Medical University, Taipei 11696, Taiwan.
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High-Throughput Profiling of Colorectal Cancer Liver Metastases Reveals Intra- and Inter-Patient Heterogeneity in the EGFR and WNT Pathways Associated with Clinical Outcome. Cancers (Basel) 2022; 14:cancers14092084. [PMID: 35565214 PMCID: PMC9104154 DOI: 10.3390/cancers14092084] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Accepted: 04/11/2022] [Indexed: 02/01/2023] Open
Abstract
Simple Summary Tumor heterogeneity can greatly influence therapy outcome and patient survival. In this study, we aimed at unraveling inter- and intra-patient heterogeneity of colorectal cancer liver metastases (CRLM). To this end, we comprehensively characterized CRLM using state-of-the-art high-throughput technologies combined with bioinformatics analyses. We found a high degree of inter- and intra-patient heterogeneity among the metastases, in particular in genes of the WNT and EGFR pathways. Through analyzing the master regulators and effectors associated with the regulation of these genes, we identified a specific gene signature that was highly expressed in a large cohort of colorectal cancer patients and associated with clinical outcome. Abstract Seventy percent of patients with colorectal cancer develop liver metastases (CRLM), which are a decisive factor in cancer progression. Therapy outcome is largely influenced by tumor heterogeneity, but the intra- and inter-patient heterogeneity of CRLM has been poorly studied. In particular, the contribution of the WNT and EGFR pathways, which are both frequently deregulated in colorectal cancer, has not yet been addressed in this context. To this end, we comprehensively characterized normal liver tissue and eight CRLM from two patients by standardized histopathological, molecular, and proteomic subtyping. Suitable fresh-frozen tissue samples were profiled by transcriptome sequencing (RNA-Seq) and proteomic profiling with reverse phase protein arrays (RPPA) combined with bioinformatic analyses to assess tumor heterogeneity and identify WNT- and EGFR-related master regulators and metastatic effectors. A standardized data analysis pipeline for integrating RNA-Seq with clinical, proteomic, and genetic data was established. Dimensionality reduction of the transcriptome data revealed a distinct signature for CRLM differing from normal liver tissue and indicated a high degree of tumor heterogeneity. WNT and EGFR signaling were highly active in CRLM and the genes of both pathways were heterogeneously expressed between the two patients as well as between the synchronous metastases of a single patient. An analysis of the master regulators and metastatic effectors implicated in the regulation of these genes revealed a set of four genes (SFN, IGF2BP1, STAT1, PIK3CG) that were differentially expressed in CRLM and were associated with clinical outcome in a large cohort of colorectal cancer patients as well as CRLM samples. In conclusion, high-throughput profiling enabled us to define a CRLM-specific signature and revealed the genes of the WNT and EGFR pathways associated with inter- and intra-patient heterogeneity, which were validated as prognostic biomarkers in CRC primary tumors as well as liver metastases.
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Zhou B, Lu Y, Zhao Z, Shi T, Wu H, Chen W, Zhang L, Zhang X. B7-H4 expression is upregulated by PKCδ activation and contributes to PKCδ-induced cell motility in colorectal cancer. Cancer Cell Int 2022; 22:147. [PMID: 35410218 PMCID: PMC8996430 DOI: 10.1186/s12935-022-02567-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 03/31/2022] [Indexed: 12/24/2022] Open
Abstract
Introduction B7-H4 is overexpressed in colorectal cancer (CRC) and plays an important role in tumor growth and immunosuppression. However, the exact mechanism that regulates B7-H4 expression remains largely unknown. Here, we investigated whether protein kinase C δ (PKCδ) regulates the expression of B7-H4 in CRC. Methods By using immunohistochemical (IHC) and immunofluorescence (IF) staining, we analyzed the expression of B7-H4 and phospho-PKCδ (p-PKCδ) in 225 colorectal tumor samples and determined the clinical significance of the expression patterns. In vitro experiments were performed with the CRC cell lines HCT116 and SW620 to detect the effect of PKCδ activation on B7-H4 expression, and xenograft-bearing mice were treated with rottlerin to monitor the expression of B7-H4 and tumor metastasis. Results The B7-H4 expression level was significantly correlated with the p-PKCδ level (r = 0.378, P < 0.001) in tumor tissues. Coexpression of p-PKCδ and B7-H4 was significantly associated with moderate/poor differentiation (P = 0.024), lymph node metastasis (P = 0.001) and advanced Dukes’ stage (P = 0.002). Western blot analysis showed that Phorbol-12-Myristate-13-Acetate (TPA) increased B7-H4 expression in a concentration-dependent manner and that rottlerin abrogated the TPA-induced increase in B7-H4 expression. The protein levels of B7-H4 and p-STAT3 were significantly reduced by a PKCδ-specific siRNA. Moreover, the STAT3 inhibitor cryptotanshinone significantly decreased the B7-H4 protein level in CRC cells. Knockdown of B7-H4 or PKCδ suppressed cell migration and motility. Rottlerin also inhibited B7-H4 expression and tumor metastasis in vivo. Conclusion The B7-H4 expression level is significantly correlated with the p-PKCδ level and tumor metastasis in CRC samples. B7-H4 expression is upregulated by STAT3 activation via PKCδ and plays roles in PKCδ-induced cancer cell motility and metastasis, suggesting that the PKCδ/STAT3/B7-H4 axis may be a potential therapeutic target for CRC. Supplementary Information The online version contains supplementary material available at 10.1186/s12935-022-02567-1.
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Affiliation(s)
- Bin Zhou
- Jiangsu Institute of Clinical Immunology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China.,Jiangsu Key Laboratory of Clinical Immunology, Soochow University, Suzhou, Jiangsu, China.,Jiangsu Key Laboratory of Gastrointestinal Tumor Immunology, Soochow University, Suzhou, Jiangsu, China
| | - Youwei Lu
- College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, China
| | - Zhiming Zhao
- College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, China
| | - Tongguo Shi
- Jiangsu Institute of Clinical Immunology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China.,Jiangsu Key Laboratory of Clinical Immunology, Soochow University, Suzhou, Jiangsu, China.,Jiangsu Key Laboratory of Gastrointestinal Tumor Immunology, Soochow University, Suzhou, Jiangsu, China
| | - Hongya Wu
- Jiangsu Institute of Clinical Immunology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China.,Jiangsu Key Laboratory of Clinical Immunology, Soochow University, Suzhou, Jiangsu, China.,Jiangsu Key Laboratory of Gastrointestinal Tumor Immunology, Soochow University, Suzhou, Jiangsu, China
| | - Weichang Chen
- Jiangsu Institute of Clinical Immunology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China.,Jiangsu Key Laboratory of Clinical Immunology, Soochow University, Suzhou, Jiangsu, China.,Jiangsu Key Laboratory of Gastrointestinal Tumor Immunology, Soochow University, Suzhou, Jiangsu, China
| | - Liang Zhang
- Jiangsu Key Laboratory of Clinical Immunology, Soochow University, Suzhou, Jiangsu, China. .,Jiangsu Key Laboratory of Gastrointestinal Tumor Immunology, Soochow University, Suzhou, Jiangsu, China. .,College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, China.
| | - Xueguang Zhang
- Jiangsu Institute of Clinical Immunology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China. .,Jiangsu Key Laboratory of Clinical Immunology, Soochow University, Suzhou, Jiangsu, China. .,Jiangsu Key Laboratory of Gastrointestinal Tumor Immunology, Soochow University, Suzhou, Jiangsu, China.
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Increased O-GlcNAcylation promotes IGF-1 receptor/PhosphatidyI Inositol-3 kinase/Akt pathway in cervical cancer cells. Sci Rep 2022; 12:4464. [PMID: 35296731 PMCID: PMC8927345 DOI: 10.1038/s41598-022-08445-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Accepted: 03/04/2022] [Indexed: 12/28/2022] Open
Abstract
O-linked β-N-acetylglucosaminylation (O-GlcNAcylation) is a reversible post-translational modification on serine and threonine residues of cytosolic, nuclear and mitochondrial proteins. O-GlcNAcylation level is regulated by OGT (O-GlcNAc transferase), which adds GlcNAc on proteins, and OGA (O-GlcNAcase), which removes it. Abnormal level of protein O-GlcNAcylation has been observed in numerous cancer cell types, including cervical cancer cells. In the present study, we have evaluated the effect of increasing protein O-GlcNAcylation on cervical cancer-derived CaSki cells. We observed that pharmacological enhancement of protein O-GlcNAcylation by Thiamet G (an inhibitor of OGA) and glucosamine (which provides UDP-GlcNAc substrate to OGT) increases CaSki cells proliferation, migration and survival. Moreover, we showed that increased O-GlcNAcylation promotes IGF-1 receptor (IGF1R) autophosphorylation, possibly through inhibition of protein tyrosine-phosphatase 1B activity. This was associated with increased IGF-1-induced phosphatidyl-Inositol 3-phosphate production at the plasma membrane and increased Akt activation in CaSki cells. Finally, we showed that protein O-GlcNAcylation and Akt phosphorylation levels were higher in human cervical cancer samples compared to healthy cervix tissues, and a highly positive correlation was observed between O-GlcNAcylation level and Akt phosphorylation in theses tissues. Together, our results indicate that increased O-GlcNAcylation, by activating IGF1R/ Phosphatidyl inositol 3-Kinase (PI-3K)/Akt signaling, may participate in cervical cancer cell growth and proliferation.
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Hong J, Xie Z, Yang Z, Yang F, Liao H, Rao S, Huang X. Inactivation of Wnt-LRP5 signaling suppresses the proliferation and migration of ovarian cancer cells. Transl Cancer Res 2022; 10:2277-2285. [PMID: 35116545 PMCID: PMC8797788 DOI: 10.21037/tcr-20-3462] [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: 12/18/2020] [Accepted: 03/05/2021] [Indexed: 11/15/2022]
Abstract
Background Ovarian cancer (OCa) is the most lethal gynecological malignant tumor, with few or no specific symptoms in its early stage. There are many signaling pathways involved in the process of OCa progression, among which the highly complex Wnt signaling pathway plays a unique role in the occurrence and development of OCa because of its functions of regulating gene expression, cell proliferation, migration, and invasion. Lipoprotein associated receptor protein 5/6 (LRP5/6) binds to activate this key pathway. Therefore, it is very important to study the mechanism of Wnt-LRP5 signaling pathway in the proliferation and migration of OCa. Methods In the present study, we have investigated the role of Wnt-LRP5 signaling pathway in OCa proliferation and migration for the first time using the dominant negative plasmid of LRP5 (DN-LRP5) and human OCa cells HO8910PM plus in a mouse model. Results Our data showed inactivation of LRP5 resulted in shift of epithelial-mesenchymal transition (EMT), rearrangement of the cytoskeleton, lowered activity of pro-proliferation and pro-migration cancer signaling pathways including Akt, p38 and NF-κB, eventually decreased proliferation and migration of OCa cells HO8910PM in vitro. Moreover, in vivo OCa-DN-LRP5 mouse model developed significantly smaller tumors as determined by inoculation of HO8910PM-DN-LRP5 cells into nude mice. Conclusions Collectively, our results demonstrate the dominant role of Wnt-LRP5 in OCa proliferation and migration and its potential as a valuable therapeutic target.
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Affiliation(s)
- Jing Hong
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, China
| | - Zeyu Xie
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, China
| | - Zhihua Yang
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, China
| | - Fangyao Yang
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, China
| | - Hai Liao
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, China
| | - Shuquan Rao
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, China
| | - Xinhe Huang
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, China
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13
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Gao Z, Xu M, Yue S, Shan H, Xia J, Jiang J, Yang S. Abnormal sialylation and fucosylation of saliva glycoproteins: Characteristics of lung cancer-specific biomarkers. CURRENT RESEARCH IN PHARMACOLOGY AND DRUG DISCOVERY 2021; 3:100079. [PMID: 35005612 PMCID: PMC8718573 DOI: 10.1016/j.crphar.2021.100079] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 10/31/2021] [Accepted: 12/15/2021] [Indexed: 12/23/2022] Open
Abstract
Dysregulated surface glycoproteins play an important role in tumor cell proliferation and progression. Abnormal glycosylation of these glycoproteins may activate tumor signal transduction and lead to tumor development. The tumor microenvironment alters its molecular composition, some of which regulate protein glycosylation biosynthesis. The glycosylation of saliva proteins in lung cancer patients is different from healthy controls, in which the glycans of cancer patients are highly sialylated and hyperfucosylated. Most studies have shown that O-glycans from cancer are truncated O-glycans, while N-glycans contain fucoses and sialic acids. Because glycosylation analysis is challenging, there are few reports on how glycosylation of saliva proteins is related to the occurrence or progression of lung cancer. In this review, we discussed glycoenzymes involved in protein glycosylation, their changes in tumor microenvironment, potential tumor biomarkers present in body fluids, and abnormal glycosylation of saliva or lung glycoproteins. We further explored the effect of glycosylation changes on tumor signal transduction, and emphasized the role of receptor tyrosine kinases in tumorigenesis and metastasis.
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Affiliation(s)
- Ziyuan Gao
- Center for Clinical Mass Spectrometry, School of Pharmaceutical Sciences, Soochow University, Jiangsu, 215123, China
- Department of Respiratory and Critical Care Medicine, Dushu Lake Hospital to Soochow University, Suzhou, Jiangsu, 215125, China
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Soochow University; Suzhou Jiangsu, 215006, China
| | - Mingming Xu
- Center for Clinical Mass Spectrometry, School of Pharmaceutical Sciences, Soochow University, Jiangsu, 215123, China
| | - Shuang Yue
- Center for Clinical Mass Spectrometry, School of Pharmaceutical Sciences, Soochow University, Jiangsu, 215123, China
| | - Huang Shan
- Center for Clinical Mass Spectrometry, School of Pharmaceutical Sciences, Soochow University, Jiangsu, 215123, China
| | - Jun Xia
- Department of Clinical Laboratory Center, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang, 310014, China
| | - Junhong Jiang
- Department of Respiratory and Critical Care Medicine, Dushu Lake Hospital to Soochow University, Suzhou, Jiangsu, 215125, China
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Soochow University; Suzhou Jiangsu, 215006, China
| | - Shuang Yang
- Center for Clinical Mass Spectrometry, School of Pharmaceutical Sciences, Soochow University, Jiangsu, 215123, China
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14
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Xie J, Huang L, Lu YG, Zheng DL. Roles of the Wnt Signaling Pathway in Head and Neck Squamous Cell Carcinoma. Front Mol Biosci 2021; 7:590912. [PMID: 33469547 PMCID: PMC7814318 DOI: 10.3389/fmolb.2020.590912] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 10/21/2020] [Indexed: 12/12/2022] Open
Abstract
Head and neck squamous cell carcinoma (HNSCC) is the most common type of head and neck tumor. It is a high incidence malignant tumor associated with a low survival rate and limited treatment options. Accumulating conclusions indicate that the Wnt signaling pathway plays a vital role in the pathobiological process of HNSCC. The canonical Wnt/β-catenin signaling pathway affects a variety of cellular progression, enabling tumor cells to maintain and further promote the immature stem-like phenotype, proliferate, prolong survival, and gain invasiveness. Genomic studies of head and neck tumors have shown that although β-catenin is not frequently mutated in HNSCC, its activity is not inhibited by mutations in upstream gene encoding β-catenin, NOTCH1, FAT1, and AJUBA. Genetic defects affect the components of the Wnt pathway in oral squamous cell carcinoma (OSCC) and the epigenetic mechanisms that regulate inhibitors of the Wnt pathway. This paper aims to summarize the groundbreaking discoveries and recent advances involving the Wnt signaling pathway and highlight the relevance of this pathway in head and neck squamous cell cancer, which will help provide new insights into improving the treatment of human HNSCC by interfering with the transcriptional signaling of Wnt.
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Affiliation(s)
- Jing Xie
- Fujian Key Laboratory of Oral Diseases, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China.,Department of Preventive Dentistry, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
| | - Li Huang
- Fujian Key Laboratory of Oral Diseases, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China.,Department of Dentistry, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China
| | - You-Guang Lu
- Fujian Key Laboratory of Oral Diseases, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China.,Department of Preventive Dentistry, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
| | - Da-Li Zheng
- Fujian Key Laboratory of Oral Diseases, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
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15
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Speidel JT, Affandi T, Jones DNM, Ferrara SE, Reyland ME. Functional proteomic analysis reveals roles for PKCδ in regulation of cell survival and cell death: Implications for cancer pathogenesis and therapy. Adv Biol Regul 2020; 78:100757. [PMID: 33045516 PMCID: PMC8294469 DOI: 10.1016/j.jbior.2020.100757] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 09/18/2020] [Accepted: 09/21/2020] [Indexed: 12/18/2022]
Abstract
Protein Kinase C-δ (PKCδ), regulates a broad group of biological functions and disease processes, including well-defined roles in immune function, cell survival and apoptosis. PKCδ primarily regulates apoptosis in normal tissues and non-transformed cells, and genetic disruption of the PRKCD gene in mice is protective in many diseases and tissue damage models. However pro-survival/pro-proliferative functions have also been described in some transformed cells and in mouse models of cancer. Recent evidence suggests that the contribution of PKCδ to specific cancers may depend in part on the oncogenic context of the tumor, consistent with its paradoxical role in cell survival and cell death. Here we will discuss what is currently known about biological functions of PKCδ and potential paradigms for PKCδ function in cancer. To further understand mechanisms of regulation by PKCδ, and to gain insight into the plasticity of PKCδ signaling, we have used functional proteomics to identify pathways that are dependent on PKCδ. Understanding how these distinct functions of PKCδ are regulated will be critical for the logical design of therapeutics to target this pathway.
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Affiliation(s)
- Jordan T Speidel
- Department of Craniofacial Biology, School of Dental Medicine, USA
| | - Trisiani Affandi
- Department of Craniofacial Biology, School of Dental Medicine, USA
| | | | - Sarah E Ferrara
- University of Colorado Comprehensive Cancer Center, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Mary E Reyland
- Department of Craniofacial Biology, School of Dental Medicine, USA.
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16
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Lu J, Xu Z, Duan H, Ji H, Zhen Z, Li B, Wang H, Tang H, Zhou J, Guo T, Wu B, Wang D, Liu Y, Niu Y, Zhang R. Tumor-associated macrophage interleukin-β promotes glycerol-3-phosphate dehydrogenase activation, glycolysis and tumorigenesis in glioma cells. Cancer Sci 2020; 111:1979-1990. [PMID: 32259365 PMCID: PMC7293068 DOI: 10.1111/cas.14408] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 02/27/2020] [Accepted: 03/02/2020] [Indexed: 12/12/2022] Open
Abstract
Tumor-immune crosstalk within the tumor microenvironment (TME) occurs at all stages of tumorigenesis. Tumor-associated M2 macrophages play a central role in tumor development, but the molecular underpinnings have not been fully elucidated. We demonstrated that M2 macrophages produce interleukin 1β (IL-1β), which activates phosphorylation of the glycolytic enzyme glycerol-3-phosphate dehydrogenase (GPD2) at threonine 10 (GPD2 pT10) through phosphatidylinositol-3-kinase-mediated activation of protein kinase-delta (PKCδ) in glioma cells. GPD2 pT10 enhanced its substrate affinity and increased the catalytic rate of glycolysis in glioma cells. Inhibiting PKCδ or GPD2 pT10 in glioma cells or blocking IL-1β generated by macrophages attenuated the glycolytic rate and proliferation of glioma cells. Furthermore, human glioblastoma tumor GPD2 pT10 levels were positively correlated with tumor p-PKCδ and IL-1β levels as well as intratumoral macrophage recruitment, tumor grade and human glioblastoma patient survival. These results reveal a novel tumorigenic role for M2 macrophages in the TME. In addition, these findings suggest possible treatment strategies for glioma patients through blockade of cytokine crosstalk between M2 macrophages and glioma cells.
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Affiliation(s)
- Jian Lu
- Department of Neurosurgery, General Hospital of TISCO, Taiyuan, China
| | - Zhongye Xu
- Department of Neurosurgery, Huizhou Third People's Hospital, Guangzhou Medical University, Huizhou, China
| | - Hubin Duan
- Department of Neurosurgery, First Hospital of Shanxi Medical University, Taiyuan, China
| | - Hongming Ji
- Department of Neurosurgery, Shanxi Provincial People's Hospital, Taiyuan, China
| | - Zigang Zhen
- Department of Neurosurgery, Shanxi Provincial People's Hospital, Taiyuan, China
| | - Bo Li
- Department of Neurosurgery, General Hospital of TISCO, Taiyuan, China
| | - Huangsuo Wang
- Department of Neurosurgery, General Hospital of TISCO, Taiyuan, China
| | - Huoquan Tang
- Department of Neurosurgery, General Hospital of TISCO, Taiyuan, China
| | - Jie Zhou
- Department of Neurosurgery, General Hospital of TISCO, Taiyuan, China
| | - Tao Guo
- Department of Neurosurgery, General Hospital of TISCO, Taiyuan, China
| | - Bin Wu
- Department of Central Laboratory, General Hospital of TISCO, Taiyuan, China
| | - Dawei Wang
- Department of Neurosurgery, General Hospital of TISCO, Taiyuan, China
| | - Yueting Liu
- Department of Neurosurgery, First Hospital of Shanxi Medical University, Taiyuan, China
| | - Yuhu Niu
- Biochemical Laboratory in Shanxi Medical University, Shanxi Medical University, Taiyuan, China
| | - Ruisheng Zhang
- Department of Neurosurgery, General Hospital of TISCO, Taiyuan, China
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17
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COL1A2 is a TBX3 target that mediates its impact on fibrosarcoma and chondrosarcoma cell migration. Cancer Lett 2019; 459:227-239. [PMID: 31202624 DOI: 10.1016/j.canlet.2019.06.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 06/05/2019] [Accepted: 06/08/2019] [Indexed: 02/07/2023]
Abstract
The developmentally important T-box transcription factor TBX3, is overexpressed in several cancers and contributes to tumorigenesis as either a tumour promoter or tumour suppressor. For example, TBX3 promotes cell proliferation, migration and invasion of chondrosarcoma cells but inhibits these processes in fibrosarcoma cells. This suggests that the cellular context influences TBX3 oncogenic functions, but the mechanism(s) involved has not been elucidated. COL1A2 encodes type I collagen and, like TBX3, plays important roles during embryogenesis and can act as either oncogene or tumour suppressor. Here we explore the possibility that COL1A2 may be a TBX3 target gene responsible for mediating its opposing oncogenic roles in chondrosarcoma and fibrosarcoma cells. Results from qRT-PCR, western blotting, luciferase reporter and chromatin immunoprecipitation assays show that TBX3 binds and activates the COL1A2 promoter. Furthermore, we show that TBX3 levels are regulated by AKT1 and that pseudo-phosphorylation of TBX3 at an AKT consensus serine site, enhances its ability to activate COL1A2. Importantly, we demonstrate that COL1A2 mediates the pro- and anti-migratory effects of TBX3 in chondrosarcoma and fibrosarcoma cells respectively. Our data reveal that the AKT1/TBX3/COL1A2 axis plays an important role in sarcomagenesis.
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18
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Banerjee A, Jothimani G, Prasad SV, Marotta F, Pathak S. Targeting Wnt Signaling through Small molecules in Governing Stem Cell Fate and Diseases. Endocr Metab Immune Disord Drug Targets 2019; 19:233-246. [PMID: 30657051 DOI: 10.2174/1871530319666190118103907] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Revised: 08/27/2018] [Accepted: 01/07/2019] [Indexed: 02/07/2023]
Abstract
BACKGROUND The conserved Wnt/β-catenin signaling pathway is responsible for multiple functions including regulation of stem cell pluripotency, cell migration, self-renewability and cell fate determination. This signaling pathway is of utmost importance, owing to its ability to fuel tissue repair and regeneration of stem cell activity in diverse organs. The human adult stem cells including hematopoietic cells, intestinal cells, mammary and mesenchymal cells rely on the manifold effects of Wnt pathway. The consequences of any dysfunction or manipulation in the Wnt genes or Wnt pathway components result in specific developmental defects and may even lead to cancer, as it is often implicated in stem cell control. It is absolutely essential to possess a comprehensive understanding of the inhibition and/ or stimulation of the Wnt signaling pathway which in turn is implicated in determining the fate of the stem cells. RESULTS In recent years, there has been considerable interest in the studies associated with the implementation of small molecule compounds in key areas of stem cell biology including regeneration differentiation, proliferation. In support of this statement, small molecules have unfolded as imperative tools to selectively activate and inhibit specific developmental signaling pathways involving the less complex mechanism of action. These compounds have been reported to modulate the core molecular mechanisms by which the stem cells regenerate and differentiate. CONCLUSION This review aims to provide an overview of the prevalent trends in the small molecules based regulation of stem cell fate via targeting the Wnt signaling pathway.
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Affiliation(s)
- Antara Banerjee
- Faculty of Allied Health Sciences, Chettinad Academy of Research and Education, Kelambakkam 603 103, India
| | - Ganesan Jothimani
- Faculty of Allied Health Sciences, Chettinad Academy of Research and Education, Kelambakkam 603 103, India
| | - Suhanya Veronica Prasad
- Faculty of Allied Health Sciences, Chettinad Academy of Research and Education, Kelambakkam 603 103, India
| | - Francesco Marotta
- ReGenera R&D International for Aging Intervention, Milano, Italy and San Babila Clinic, Healthy Aging Unit by Genomics and Biotechnology, Milano, Italy
| | - Surajit Pathak
- Faculty of Allied Health Sciences, Chettinad Academy of Research and Education, Kelambakkam 603 103, India
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19
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Yogosawa S, Yoshida K. Tumor suppressive role for kinases phosphorylating p53 in DNA damage-induced apoptosis. Cancer Sci 2018; 109:3376-3382. [PMID: 30191640 PMCID: PMC6215896 DOI: 10.1111/cas.13792] [Citation(s) in RCA: 100] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 07/23/2018] [Accepted: 09/02/2018] [Indexed: 12/20/2022] Open
Abstract
Tumor suppressor p53 plays an important role in cancer prevention. Under normal conditions, p53 is maintained at a low level. However, in response to various cellular stresses, p53 is stabilized and activated, which, in turn, initiates DNA repair, cell-cycle arrest, senescence and apoptosis. Post-translational modifications of p53 including phosphorylation, ubiquitination, and acetylation at multiple sites are important to regulate its activation and subsequent transcriptional gene expression. Particularly, phosphorylation of p53 plays a critical role in modulating its activation to induce apoptosis in cancer cells. In this context, previous studies show that several serine/threonine kinases regulate p53 phosphorylation and downstream gene expression. The molecular basis by which p53 and its kinases induce apoptosis for cancer prevention has been extensively studied. However, the relationship between p53 phosphorylation and its kinases and how the activity of kinases is controlled are still largely unclear; hence, they need to be investigated. In this review, we discuss various roles for p53 phosphorylation and its responsible kinases to induce apoptosis and a new therapeutic approach in a broad range of cancers.
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Affiliation(s)
- Satomi Yogosawa
- Department of Biochemistry, Jikei University School of Medicine, Tokyo, Japan
| | - Kiyotsugu Yoshida
- Department of Biochemistry, Jikei University School of Medicine, Tokyo, Japan
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20
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Bessa C, Soares J, Raimundo L, Loureiro JB, Gomes C, Reis F, Soares ML, Santos D, Dureja C, Chaudhuri SR, Lopez-Haber C, Kazanietz MG, Gonçalves J, Simões MF, Rijo P, Saraiva L. Discovery of a small-molecule protein kinase Cδ-selective activator with promising application in colon cancer therapy. Cell Death Dis 2018; 9:23. [PMID: 29348560 PMCID: PMC5833815 DOI: 10.1038/s41419-017-0154-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Revised: 11/06/2017] [Accepted: 11/09/2017] [Indexed: 12/12/2022]
Abstract
Protein kinase C (PKC) isozymes play major roles in human diseases, including cancer. Yet, the poor understanding of isozymes-specific functions and the limited availability of selective pharmacological modulators of PKC isozymes have limited the clinical translation of PKC-targeting agents. Here, we report the first small-molecule PKCδ-selective activator, the 7α-acetoxy-6β-benzoyloxy-12-O-benzoylroyleanone (Roy-Bz), which binds to the PKCδ-C1-domain. Roy-Bz potently inhibited the proliferation of colon cancer cells by inducing a PKCδ-dependent mitochondrial apoptotic pathway involving caspase-3 activation. In HCT116 colon cancer cells, Roy-Bz specifically triggered the translocation of PKCδ but not other phorbol ester responsive PKCs. Roy-Bz caused a marked inhibition in migration of HCT116 cells in a PKCδ-dependent manner. Additionally, the impairment of colonosphere growth and formation, associated with depletion of stemness markers, indicate that Roy-Bz also targets drug-resistant cancer stem cells, preventing tumor dissemination and recurrence. Notably, in xenograft mouse models, Roy-Bz showed a PKCδ-dependent antitumor effect, through anti-proliferative, pro-apoptotic, and anti-angiogenic activities. Besides, Roy-Bz was non-genotoxic, and in vivo it had no apparent toxic side effects. Collectively, our findings reveal a novel promising anticancer drug candidate. Most importantly, Roy-Bz opens the way to a new era on PKC biology and pharmacology, contributing to the potential redefinition of the structural requirements of isozyme-selective agents, and to the re-establishment of PKC isozymes as feasible therapeutic targets in human diseases.
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Affiliation(s)
- Cláudia Bessa
- UCIBIO/REQUIMTE, Laboratório de Microbiologia, Departamento de Ciências Biológicas, Faculdade de Farmácia, Universidade do Porto, Porto, Portugal
| | - Joana Soares
- UCIBIO/REQUIMTE, Laboratório de Microbiologia, Departamento de Ciências Biológicas, Faculdade de Farmácia, Universidade do Porto, Porto, Portugal
| | - Liliana Raimundo
- UCIBIO/REQUIMTE, Laboratório de Microbiologia, Departamento de Ciências Biológicas, Faculdade de Farmácia, Universidade do Porto, Porto, Portugal
| | - Joana B Loureiro
- UCIBIO/REQUIMTE, Laboratório de Microbiologia, Departamento de Ciências Biológicas, Faculdade de Farmácia, Universidade do Porto, Porto, Portugal
| | - Célia Gomes
- Laboratory of Pharmacology and Experimental Therapeutics, Institute for Biomedical Imaging and Life Sciences (IBILI), Faculty of Medicine, & CNC.IBILI Research Consortium, University of Coimbra, Coimbra, Portugal
| | - Flávio Reis
- Laboratory of Pharmacology and Experimental Therapeutics, Institute for Biomedical Imaging and Life Sciences (IBILI), Faculty of Medicine, & CNC.IBILI Research Consortium, University of Coimbra, Coimbra, Portugal
| | - Miguel L Soares
- Laboratório de Apoio à Investigação em Medicina Molecular, Departamento de Biomedicina, Faculdade de Medicina da Universidade do Porto, Porto, Portugal
| | - Daniel Santos
- REQUIMTE, Faculdade de Ciências da Universidade do Porto, Porto, Portugal
| | - Chetna Dureja
- CSIR-Institute of Microbial Technology, Sector 39A, Chandigarh, India
| | | | - Cynthia Lopez-Haber
- Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, USA
| | - Marcelo G Kazanietz
- Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, USA
| | - Jorge Gonçalves
- Laboratório de Farmacologia, Departamento de Ciências do Medicamento, Faculdade de Farmácia, Universidade do Porto, Porto, Portugal
| | - Maria F Simões
- CBIOS-Centro de Investigação em Biociências e Tecnologias da Saúde, Universidade Lusófona, Lisboa, Portugal.,iMed.ULisboa, Instituto de Investigação do Medicamento, Faculdade de Farmácia da Universidade de Lisboa, Lisboa, Portugal
| | - Patrícia Rijo
- CBIOS-Centro de Investigação em Biociências e Tecnologias da Saúde, Universidade Lusófona, Lisboa, Portugal. .,iMed.ULisboa, Instituto de Investigação do Medicamento, Faculdade de Farmácia da Universidade de Lisboa, Lisboa, Portugal.
| | - Lucília Saraiva
- UCIBIO/REQUIMTE, Laboratório de Microbiologia, Departamento de Ciências Biológicas, Faculdade de Farmácia, Universidade do Porto, Porto, Portugal.
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21
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Lee KH, Jeong WJ, Cha PH, Lee SK, Min DS, Choi KY. Stabilization of Sur8 via PKCα/δ degradation promotes transformation and migration of colorectal cancer cells. Oncotarget 2017; 8:115596-115608. [PMID: 29383184 PMCID: PMC5777796 DOI: 10.18632/oncotarget.23313] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2017] [Accepted: 12/03/2017] [Indexed: 12/23/2022] Open
Abstract
Scaffold proteins of the mitogen activated protein kinase (MAPK) pathway recruit protein kinase cascades to confer context-specificity to cellular signaling. Varying concentrations of scaffold proteins determine different aspects of signaling outputs. However, regulatory mechanisms of scaffold proteins are poorly understood. Sur8, a scaffold protein in the Ras-MAPK pathway, is known to be involved in cell transformation and migration, and is increased in human colorectal cancer (CRC) patient tissue. Here we determine that regulation of Sur8 stability mediates transformation and migration of CRC cells. Fibroblast growth factor 2 (FGF2) is identified as an external regulator that stabilizes Sur8. Protein kinase C-alpha and -delta (PKCα/δ) are also identified as specific mediators of FGF2 regulation of Sur8 stability. PKCα/δ phosphorylate Sur8 at Thr-71 and Ser-297, respectively. This phosphorylation is essential for polyubiquitin-dependent degradation of Sur8. Sur8 mutations, which mimic phosphorylation by PKCα/δ and destabilized Sur8, suppress the FGF2-induced transformation and migration of CRC cells. The clinical relevance of Sur8 regulation by PKCα/δ is indicated by the inverse relationship between PKCα/δ and Sur8 expression in human CRC patient tissues. Overall, our findings demonstrate for the first time a regulatory mechanism of Sur8 stability involving cellular transformation and migration in CRC.
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Affiliation(s)
- Kug Hwa Lee
- Translational Research Center for Protein Function Control, Yonsei University, Seoul, South Korea.,Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul, South Korea
| | - Woo-Jeong Jeong
- Translational Research Center for Protein Function Control, Yonsei University, Seoul, South Korea.,Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul, South Korea
| | - Pu-Hyeon Cha
- Translational Research Center for Protein Function Control, Yonsei University, Seoul, South Korea.,Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul, South Korea
| | - Sang-Kyu Lee
- Translational Research Center for Protein Function Control, Yonsei University, Seoul, South Korea.,Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul, South Korea
| | - Do Sik Min
- Translational Research Center for Protein Function Control, Yonsei University, Seoul, South Korea.,Department of Molecular Biology, College of Natural Science, Pusan National University, Pusan, South Korea
| | - Kang-Yell Choi
- Translational Research Center for Protein Function Control, Yonsei University, Seoul, South Korea.,Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul, South Korea
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22
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Wei LH, Lin JM, Chu JF, Chen HW, Li QY, Peng J. Scutellaria barbata D. Don inhibits colorectal cancer growth via suppression of Wnt/β-catenin signaling pathway. Chin J Integr Med 2017; 23:858-863. [PMID: 29080197 DOI: 10.1007/s11655-017-2775-3] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Indexed: 01/05/2023]
Abstract
OBJECTIVE To investigate the effect of the ethanol extract of Scutellaria barbata D. Don (EESB) on colorectal cancer (CRC) growth and Wnt/β-catenin signaling pathway in vivo and in vitro. METHODS In vivo experiment, CRC xenograft mouse model was constructed with injection of HT-29 cells. Following xenograft implantation, twenty mice were randomly divided into EESB-treated group (n=10) and control group (n=10) by a random number table, and were given with intra-gastric administration of 2 g/kg EESB or saline, 5 days a week for 16 days, respectively. At the end of experiment, tumors were removed and weighed by electronic scales. The proliferation biomarker Ki-67 of tumor was evaluated by immunohistochemistry (IHC) assay. In vitro study, HT-29 cells were treated with 0, 0.5, 1.5, 2.5 mg/mL EESB for 24 h. At the end of the treatment, the viability and survival of HT-29 cells were determined by methylthiazolyldiphenyl-tetrazolium bromide (MTT) assay and colony formation assay, respectively. The mRNA expression of c-Myc, Survivin and adenomatous polyposis coli (APC) was examined by reverse transcription-polymerase chain reaction (RT-PCR) both in tumor tissues of CRC xenograft mice and HT-29 cells. Protein expression of c-Myc, Survivin, APC, and β-catenin as well as β-catenin phosphorylation level were evaluated by IHC assay or Western blotting. RESULTS EESB significantly reduced tumor weight in CRC xenografts mice, compared with the control group (P<0.05). IHC assay showed that EESB significantly inhibited protein expression of Ki-67 in tumor tissues (P<0.05). MTT assay showed that EESB significantly reduced HT-29 cell viability in a dose-dependent manner (P<0.05). Colony formation assay showed that EESB dose-dependently decreased the survival of HT-29 cells (P<0.05). In addition, RT-PCR assay showed that EESB decreased the mRNA expression of c-Myc and Survivin and increased APC expression, both in tumor tissues of CRC xenograft mice and HT-29 cells (P<0.05). IHC assay or Western blotting showed that EESB decreased protein expression of β-catenin, c-Myc and Survivin, as well as increased APC expression and β-catenin phosphorylation in tumor tissues or HT-29 cells (P<0.05). CONCLUSIONS EESB significantly reduced tumor growth in CRC xenografts mice, and inhibited the viability and survival of HT-29 cells. EESB could suppress the activation of the Wnt/β-catenin pathway, which might be one of the mechanisms whereby Scutellaria barbata D. Don exerts its anticancer activity.
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Affiliation(s)
- Li-Hui Wei
- Academy of Integrative Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, 350122, China
- Fujian Key Laboratory of Integrative Medicine on Geriatrics, Fujian University of Traditional Chinese Medicine, Fuzhou, 350122, China
| | - Jiu-Mao Lin
- Academy of Integrative Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, 350122, China
- Fujian Key Laboratory of Integrative Medicine on Geriatrics, Fujian University of Traditional Chinese Medicine, Fuzhou, 350122, China
| | - Jian-Feng Chu
- Academy of Integrative Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, 350122, China
- Fujian Key Laboratory of Integrative Medicine on Geriatrics, Fujian University of Traditional Chinese Medicine, Fuzhou, 350122, China
| | - Hong-Wei Chen
- Academy of Integrative Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, 350122, China
- Fujian Key Laboratory of Integrative Medicine on Geriatrics, Fujian University of Traditional Chinese Medicine, Fuzhou, 350122, China
| | - Qing-Yu Li
- Academy of Integrative Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, 350122, China
- Fujian Key Laboratory of Integrative Medicine on Geriatrics, Fujian University of Traditional Chinese Medicine, Fuzhou, 350122, China
| | - Jun Peng
- Academy of Integrative Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, 350122, China.
- Fujian Key Laboratory of Integrative Medicine on Geriatrics, Fujian University of Traditional Chinese Medicine, Fuzhou, 350122, China.
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23
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Park CK, Kim WK, Kim H. Clinicopathological characteristics of KIT and protein kinase C-δ expression in adenoid cystic carcinoma: comparison with chromophobe renal cell carcinoma and gastrointestinal stromal tumour. Histopathology 2017; 71:529-542. [PMID: 28561935 DOI: 10.1111/his.13270] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Accepted: 05/28/2017] [Indexed: 12/16/2022]
Abstract
AIMS KIT overexpression is frequently observed in adenoid cystic carcinomas (AdCCs), chromophobe renal cell carcinomas (ChRCCs), and gastrointestinal stromal tumours (GISTs). Persistent KIT activation has been reported to be mediated by protein kinase C (PKC)-δ in a subset of colon cancers with wild-type KIT overexpression, and by PKC-θ in GISTs with mutant KIT overexpression. To elucidate the clinical implications of PKC-δ and PKC-θ expression in KIT-expressing tumours, we investigated the expression of KIT, PKC-δ and PKC-θ in AdCCs and ChRCCs in comparison with GISTs. METHODS AND RESULTS KIT expression, PKC-δ expression and PKC-θ expression were analysed in whole sections from 41 AdCCs, 40 ChRCCs and 56 GISTs by immunohistochemistry. Membranous expression of KIT was found in 34 AdCCs and all ChRCCs, whereas cytoplasmic expression of KIT was found in 46 GISTs. In AdCCs, PKC-δ expression was associated with histological grade (P = 0.049), lymphovascular invasion (P = 0.004), perineural invasion (P = 0.002), and KIT positivity (P = 0.002). PKC-δ positivity was associated with shorter relapse-free survival (RFS) (P = 0.017) and a tendency for there to be shorter overall survival (OS) (P = 0.090) in patients with AdCCs. No clinicopathological associations were observed between PKC-δ and KIT expression in ChRCCs. In GISTs, PKC-θ expression was associated with higher mitotic count (P = 0.011) and high grade according to the modified National Institutes of Health criteria (P < 0.001). PKC-θ positivity was associated with shorter RFS (P = 0.016) and a tendency for there to be shorter OS (P = 0.051) in patients with GISTs. CONCLUSIONS PKC-δ expression is associated with KIT expression and the prognosis of patients with AdCCs, suggesting that PKC-δ may be a potential therapeutic target for AdCCs.
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Affiliation(s)
- Cheol Keun Park
- Department of Pathology, Armed Forces Capital Hospital, Seongnam, Republic of Korea.,Department of Pathology, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Won Kyu Kim
- Department of Pathology, Yonsei University College of Medicine, Seoul, Republic of Korea.,Brain Korea 21 PLUS Projects for Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Hoguen Kim
- Department of Pathology, Yonsei University College of Medicine, Seoul, Republic of Korea.,Brain Korea 21 PLUS Projects for Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea.,Healthcare Review and Assessment Committee, Health Insurance Review & Assessment Service, Seoul, Republic of Korea
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24
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Duong M, Yu X, Teng B, Schroder P, Haller H, Eschenburg S, Schiffer M. Protein kinase C ϵ stabilizes β-catenin and regulates its subcellular localization in podocytes. J Biol Chem 2017; 292:12100-12110. [PMID: 28539358 DOI: 10.1074/jbc.m117.775700] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2017] [Revised: 05/23/2017] [Indexed: 01/18/2023] Open
Abstract
Kidney disease has been linked to dysregulated signaling via PKC in kidney cells such as podocytes. PKCα is a conventional isoform of PKC and a well-known binding partner of β-catenin, which promotes its degradation. β-Catenin is the main effector of the canonical Wnt pathway and is critical in cell adhesion. However, whether other PKC isoforms interact with β-catenin has not been studied systematically. Here we demonstrate that PKCϵ-deficient mice, which develop proteinuria and glomerulosclerosis, display lower β-catenin expression compared with PKC wild-type mice, consistent with an altered phenotype of podocytes in culture. Remarkably, β-catenin showed a reversed subcellular localization pattern: Although β-catenin exhibited a perinuclear pattern in undifferentiated wild-type cells, it predominantly localized to the nucleus in PKCϵ knockout cells. Phorbol 12-myristate 13-acetate stimulation of both cell types revealed that PKCϵ positively regulates β-catenin expression and stabilization in a glycogen synthase kinase 3β-independent manner. Further, β-catenin overexpression in PKCϵ-deficient podocytes could restore the wild-type phenotype, similar to rescue with a PKCϵ construct. This effect was mediated by up-regulation of P-cadherin and the β-catenin downstream target fascin1. Zebrafish studies indicated three PKCϵ-specific phosphorylation sites in β-catenin that are required for full β-catenin function. Co-immunoprecipitation and pulldown assays confirmed PKCϵ and β-catenin as binding partners and revealed that ablation of the three PKCϵ phosphorylation sites weakens their interaction. In summary, we identified a novel pathway for regulation of β-catenin levels and define PKCϵ as an important β-catenin interaction partner and signaling opponent of other PKC isoforms in podocytes.
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Affiliation(s)
- Michelle Duong
- Department of Hypertension and Nephrology, Hanover Medical School, 30625 Hanover, Germany
| | - Xuejiao Yu
- Department of Hypertension and Nephrology, Hanover Medical School, 30625 Hanover, Germany
| | - Beina Teng
- Department of Hypertension and Nephrology, Hanover Medical School, 30625 Hanover, Germany
| | - Patricia Schroder
- Mount Desert Island Biological Laboratory, Salisbury Cove, Maine 04672
| | - Hermann Haller
- Department of Hypertension and Nephrology, Hanover Medical School, 30625 Hanover, Germany
| | - Susanne Eschenburg
- Institute for Biophysical Chemistry, Hanover Medical School, 30625 Hanover, Germany
| | - Mario Schiffer
- Department of Hypertension and Nephrology, Hanover Medical School, 30625 Hanover, Germany.
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25
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Pan T, Xu J, Zhu Y. Self-renewal molecular mechanisms of colorectal cancer stem cells. Int J Mol Med 2016; 39:9-20. [PMID: 27909729 PMCID: PMC5179189 DOI: 10.3892/ijmm.2016.2815] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Accepted: 11/22/2016] [Indexed: 12/19/2022] Open
Abstract
Colorectal cancer stem cells (CCSCs) represent a small fraction of the colorectal cancer cell population that possess self-renewal and multi-lineage differentiation potential and drive tumorigenicity. Self-renewal is essential for the malignant biological behaviors of colorectal cancer stem cells. While the self-renewal molecular mechanisms of colorectal cancer stem cells are not yet fully understood, the aberrant activation of signaling pathways, such as Wnt, Notch, transforming growth factor-β (TGF-β)/bone morphogenetic protein (BMP) and Hedgehog-Gli (HH-GLI), specific roles mediated by cell surface markers and micro-environmental factors are involved in the regulation of self-renewal. The elucidation of the molecular mechanisms behind self-renewal may lead to the development of novel targeted interventions for the treatment of colorectal cancer.
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Affiliation(s)
- Tianhui Pan
- Laboratory of Gastroenterology, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, P.R. China
| | - Jinghong Xu
- Department of Pathology, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, P.R. China
| | - Yongliang Zhu
- Laboratory of Gastroenterology, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, P.R. China
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26
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Hwang E, Yoo KC, Kang SG, Kim RK, Cui YH, Lee HJ, Kim MJ, Lee JS, Kim IG, Suh Y, Lee SJ. PKCδ activated by c-MET enhances infiltration of human glioblastoma cells through NOTCH2 signaling. Oncotarget 2016; 7:4890-902. [PMID: 26700818 PMCID: PMC4826251 DOI: 10.18632/oncotarget.6640] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Accepted: 12/05/2015] [Indexed: 11/25/2022] Open
Abstract
Poor prognosis of glioblastoma (GBM) is attributable to the propensity of tumor cells to infiltrate into the brain parenchyma. Protein kinase C (PKC) isozymes are highly expressed or aberrantly activated in GBM. However, how this signaling node translates to GBM cell invasiveness remains unknown. Here, we report that among PKC isoforms, PKCδ is strongly associated with infiltration of GBM cells. Notably, PKCδ enhanced Tyr418 phosphorylation of the non-receptor tyrosine kinase SRC, which in turn activated STAT3 and subsequent NOTCH2 signaling, ultimately leading to GBM cell invasiveness. Furthermore, we showed that PKCδ was aberrantly activated in GBM cells by c-MET, a receptor tyrosine kinase hyperactivated in GBM. In agreement, inhibition either component in the c-MET/PKCδ/SRC/STAT3 signaling axis effectively blocked the NOTCH2 signaling and invasiveness of GBM cells. Taken together, our findings shed a light on the signaling mechanisms behind the constitutive activation of PKCδ signaling in GBM.
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Affiliation(s)
- Eunji Hwang
- Department of Life Science, Research Institute for Natural Sciences, Hanyang University, Seoul, Korea
| | - Ki-Chun Yoo
- Department of Life Science, Research Institute for Natural Sciences, Hanyang University, Seoul, Korea
| | - Seok-Gu Kang
- Department of Neurosurgery, Severance Hospital, Yonsei University College of Medicine, Seodaemun-gu, Korea
| | - Rae-Kwon Kim
- Department of Life Science, Research Institute for Natural Sciences, Hanyang University, Seoul, Korea
| | - Yan-Hong Cui
- Department of Life Science, Research Institute for Natural Sciences, Hanyang University, Seoul, Korea
| | - Hae-June Lee
- Division of Radiation Effect, Korea Institute of Radiological and Medical Sciences, Seoul, Korea
| | - Min-Jung Kim
- Laboratory of Radiation Exposure & Therapeutics, National Radiation Emergency Medical Center, Korea Institute of Radiological and Medical Sciences, Seoul, Korea
| | - Jae-Seong Lee
- Department of Biological Sciences, College of Science, Sungkyunkwan University, Seoul, Korea
| | - In-Gyu Kim
- Department of Radiation Biology, Environmental Radiation Research Group, Korea Atomic Energy Research Institute, Daejeon, Korea
| | - Yongjoon Suh
- Department of Life Science, Research Institute for Natural Sciences, Hanyang University, Seoul, Korea
| | - Su-Jae Lee
- Department of Life Science, Research Institute for Natural Sciences, Hanyang University, Seoul, Korea
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27
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Niku M, Pajari AM, Sarantaus L, Päivärinta E, Storvik M, Heiman-Lindh A, Suokas S, Nyström M, Mutanen M. Western diet enhances intestinal tumorigenesis in Min/+ mice, associating with mucosal metabolic and inflammatory stress and loss of Apc heterozygosity. J Nutr Biochem 2016; 39:126-133. [PMID: 27833053 DOI: 10.1016/j.jnutbio.2016.09.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Revised: 08/21/2016] [Accepted: 09/13/2016] [Indexed: 11/25/2022]
Abstract
Western-type diet (WD) is a risk factor for colorectal cancer, but the underlying mechanisms are poorly understood. We investigated the interaction of WD and heterozygous mutation in the Apc gene on adenoma formation and metabolic and immunological changes in the histologically normal intestinal mucosa of ApcMin/+ (Min/+) mice. The diet used was high in saturated fat and low in calcium, vitamin D, fiber and folate. The number of adenomas was twofold higher in the WD mice compared to controls, but adenoma size, proliferation or apoptosis did not differ. The ratio of the Min to wild-type allele was higher in the WD mice, indicating accelerated loss of Apc heterozygosity (LOH). Densities of intraepithelial CD3ε+ T lymphocytes and of mucosal FoxP3+ regulatory T cells were higher in the WD mice, implying inflammatory changes. Western blot analyses from the mucosa of the WD mice showed suppressed activation of the ERK and AKT pathways and a tendency for reduced activation of the mTOR pathway as measured in phosphoS6/S6 levels. The expression of pyruvate dehydrogenase kinase 4 was up-regulated in both mRNA and protein levels. Gene expression analyses showed changes in oxidation/reduction, fatty acid and monosaccharide metabolic pathways, tissue organization, cell fate and regulation of apoptosis. Together, our results suggest that the high-risk Western diet primes the intestine to tumorigenesis through synergistic effects in energy metabolism, inflammation and oxidative stress, which culminate in the acceleration of LOH of the Apc gene.
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Affiliation(s)
- Mikael Niku
- Department of Food and Environmental Sciences, Division of Nutrition, University of Helsinki, P.O. Box 66, Agnes Sjöbergin katu 2, FI-00014 Helsinki, Finland; Faculty of Veterinary Medicine, Division of Veterinary Biosciences, University of Helsinki, P.O. Box 66, Agnes Sjöbergin katu 2, FI-00014 Helsinki, Finland
| | - Anne-Maria Pajari
- Department of Food and Environmental Sciences, Division of Nutrition, University of Helsinki, P.O. Box 66, Agnes Sjöbergin katu 2, FI-00014 Helsinki, Finland
| | - Laura Sarantaus
- Department of Biosciences, Division of Genetics, P.O. Box 65, University of Helsinki, FI-00014 Helsinki, Finland
| | - Essi Päivärinta
- Department of Food and Environmental Sciences, Division of Nutrition, University of Helsinki, P.O. Box 66, Agnes Sjöbergin katu 2, FI-00014 Helsinki, Finland
| | - Markus Storvik
- School of Pharmacy, University of Eastern Finland, P.O. Box 1627, FI-70211, Kuopio, Finland
| | - Anu Heiman-Lindh
- Department of Food and Environmental Sciences, Division of Nutrition, University of Helsinki, P.O. Box 66, Agnes Sjöbergin katu 2, FI-00014 Helsinki, Finland
| | - Santeri Suokas
- Faculty of Veterinary Medicine, Division of Veterinary Biosciences, University of Helsinki, P.O. Box 66, Agnes Sjöbergin katu 2, FI-00014 Helsinki, Finland
| | - Minna Nyström
- Department of Biosciences, Division of Genetics, P.O. Box 65, University of Helsinki, FI-00014 Helsinki, Finland
| | - Marja Mutanen
- Department of Food and Environmental Sciences, Division of Nutrition, University of Helsinki, P.O. Box 66, Agnes Sjöbergin katu 2, FI-00014 Helsinki, Finland.
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28
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Reyland ME, Jones DNM. Multifunctional roles of PKCδ: Opportunities for targeted therapy in human disease. Pharmacol Ther 2016; 165:1-13. [PMID: 27179744 DOI: 10.1016/j.pharmthera.2016.05.001] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The serine-threonine protein kinase, protein kinase C-δ (PKCδ), is emerging as a bi-functional regulator of cell death and proliferation. Studies in PKCδ-/- mice have confirmed a pro-apoptotic role for this kinase in response to DNA damage and a tumor promoter role in some oncogenic contexts. In non-transformed cells, inhibition of PKCδ suppresses the release of cytochrome c and caspase activation, indicating a function upstream of apoptotic pathways. Data from PKCδ-/- mice demonstrate a role for PKCδ in the execution of DNA damage-induced and physiologic apoptosis. This has led to the important finding that inhibitors of PKCδ can be used therapeutically to reduce irradiation and chemotherapy-induced toxicity. By contrast, PKCδ is a tumor promoter in mouse models of mammary gland and lung cancer, and increased PKCδ expression is a negative prognostic indicator in Her2+ and other subtypes of human breast cancer. Understanding how these distinct functions of PKCδ are regulated is critical for the design of therapeutics to target this pathway. This review will discuss what is currently known about biological roles of PKCδ and prospects for targeting PKCδ in human disease.
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Affiliation(s)
- Mary E Reyland
- Department of Craniofacial Biology, School of Dental Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA.
| | - David N M Jones
- Department of Pharmacology, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
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29
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Flores ML, Castilla C, Gasca J, Medina R, Pérez-Valderrama B, Romero F, Japón MA, Sáez C. Loss of PKCδ Induces Prostate Cancer Resistance to Paclitaxel through Activation of Wnt/β-Catenin Pathway and Mcl-1 Accumulation. Mol Cancer Ther 2016; 15:1713-25. [PMID: 27196755 DOI: 10.1158/1535-7163.mct-15-0951] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Accepted: 04/05/2016] [Indexed: 11/16/2022]
Abstract
Prostate cancer is the leading cause of cancer-related death among men in developed countries. Although castration therapy is initially effective, prostate cancers progress to hormone-refractory disease and in this case taxane-based chemotherapy is widely used. Castration-resistant prostate cancer cells often develop resistance to chemotherapy agents and the search for new therapeutic strategies is necessary. In this article, we demonstrate that PKCδ silencing favors mitotic arrest after paclitaxel treatment in PC3 and LNCaP cells; however, this is associated with resistance to paclitaxel-induced apoptosis. In prostate cancer cells, PKCδ seems to exert a proapoptotic role, acting as a negative regulator of the canonical Wnt/β-catenin pathway. PKCδ silencing induces activation of Wnt/β-catenin pathway and the expression of its target genes, including Aurora kinase A, which is involved in activation of Akt and both factors play a key role in GSK3β inactivation and consequently in the stabilization of β-catenin and antiapoptotic protein Mcl-1. We also show that combined treatments with paclitaxel and Wnt/β-catenin or Akt inhibitors improve the apoptotic response to paclitaxel, even in the absence of PKCδ. Finally, we observe that high Gleason score prostate tumors lose PKCδ expression and this correlates with higher activation of β-catenin, inactivation of GSK3β, and higher levels of Aurora kinase A and Mcl-1 proteins. These findings suggest that targeting Wnt/β-catenin or Akt pathways may increase the efficacy of taxane chemotherapy in advanced human prostate cancers that have lost PKCδ expression. Mol Cancer Ther; 15(7); 1713-25. ©2016 AACR.
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Affiliation(s)
- M Luz Flores
- Instituto de Biomedicina de Sevilla (IBIS), Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, Spain
| | - Carolina Castilla
- Instituto de Biomedicina de Sevilla (IBIS), Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, Spain
| | - Jessica Gasca
- Instituto de Biomedicina de Sevilla (IBIS), Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, Spain
| | - Rafael Medina
- Department of Urology, Hospital Universitario Virgen del Rocío, Seville, Spain
| | | | - Francisco Romero
- Department of Microbiology, Faculty of Biology, Universidad de Sevilla, Seville, Spain
| | - Miguel A Japón
- Instituto de Biomedicina de Sevilla (IBIS), Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, Spain. Department of Pathology, Hospital Universitario Virgen del Rocío, Seville, Spain.
| | - Carmen Sáez
- Instituto de Biomedicina de Sevilla (IBIS), Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, Spain. Department of Pathology, Hospital Universitario Virgen del Rocío, Seville, Spain.
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30
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Gentilin E, Di Pasquale C, Gagliano T, Tagliati F, Benfini K, Ambrosio MR, Bondanelli M, degli Uberti EC, Zatelli MC. Protein Kinase C Delta restrains growth in ACTH-secreting pituitary adenoma cells. Mol Cell Endocrinol 2016; 419:252-8. [PMID: 26522132 DOI: 10.1016/j.mce.2015.10.025] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Revised: 10/21/2015] [Accepted: 10/26/2015] [Indexed: 12/25/2022]
Abstract
Protein Kinase C Delta (PRKCD) has been highlighted among disrupted pathways in corticotroph adenomas. PRKCD is expressed at low level in human corticotroph adenomas and controls cell cycle in vitro. Therefore, PRKCD may play an important role in the development/progression of corticotroph adenomas, warranting further studies to understand the role of PRKCD and related pathways in restraining pituitary cell growth. We evaluated PRKCD role in influencing cell behavior in terms of cell viability, hormone expression and protein expression profile, by silencing PRKCD in AtT-20/D16v-F2 cells. PRKCD silencing increases cell viability, enhances hormone expression and induces morphological changes associated with deregulation of adhesion molecules. PRKCD silencing is associated with an increase in Epithelial Growth Factor Receptor (EGFR) expression, a marker of tumor aggressive behavior, and sensitivity to anti-EGFR molecules. PRKCD might restrain corticotroph adenoma cells from acquiring an aggressive behavior, candidating PRKCD as a possible molecular target for the treatment of corticotroph adenomas.
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Affiliation(s)
- Erica Gentilin
- Section of Endocrinology & Internal Medicine, Dept. of Medical Sciences, University of Ferrara, Italy; Laboratorio in rete del Tecnopolo "Tecnologie delle terapie avanzate" (LTTA) of the University of Ferrara, Italy
| | - Carmelina Di Pasquale
- Section of Endocrinology & Internal Medicine, Dept. of Medical Sciences, University of Ferrara, Italy
| | - Teresa Gagliano
- Section of Endocrinology & Internal Medicine, Dept. of Medical Sciences, University of Ferrara, Italy
| | - Federico Tagliati
- Section of Endocrinology & Internal Medicine, Dept. of Medical Sciences, University of Ferrara, Italy
| | - Katiuscia Benfini
- Section of Endocrinology & Internal Medicine, Dept. of Medical Sciences, University of Ferrara, Italy
| | - Maria Rosaria Ambrosio
- Section of Endocrinology & Internal Medicine, Dept. of Medical Sciences, University of Ferrara, Italy
| | - Marta Bondanelli
- Section of Endocrinology & Internal Medicine, Dept. of Medical Sciences, University of Ferrara, Italy
| | - Ettore C degli Uberti
- Section of Endocrinology & Internal Medicine, Dept. of Medical Sciences, University of Ferrara, Italy; Laboratorio in rete del Tecnopolo "Tecnologie delle terapie avanzate" (LTTA) of the University of Ferrara, Italy
| | - Maria Chiara Zatelli
- Section of Endocrinology & Internal Medicine, Dept. of Medical Sciences, University of Ferrara, Italy; Laboratorio in rete del Tecnopolo "Tecnologie delle terapie avanzate" (LTTA) of the University of Ferrara, Italy.
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31
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Kim S, Chun SY, Kwon YS, Nam KS. Crosstalk between Wnt signaling and Phorbol ester-mediated PKC signaling in MCF-7 human breast cancer cells. Biomed Pharmacother 2015; 77:114-9. [PMID: 26796274 DOI: 10.1016/j.biopha.2015.12.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Revised: 11/26/2015] [Accepted: 12/15/2015] [Indexed: 11/25/2022] Open
Abstract
Although many studies have implicated the crosstalk between the Wnt and PKC signaling pathways in tumor initiation and progression, the molecular roles of PKC isoforms in the Wnt signaling pathway remain poorly understood. In this study, we explored the contribution of PKC isoforms to canonical and noncanonical Wnt signaling pathway in mediating cell migration and an epithelial-mesenchymal transition (EMT). When MCF-7 cells were treated with 12-O-tetradecanoylphorbol-13-acetate (TPA) for up to 3 weeks, the effect of TPA on Wnt signaling pathway was dramatically different depending on the exposure time. The short term exposure (3 days) of MCF-7 cells to TPA exhibited significant induction of Wnt5a expression, along with the enhanced expression of PKC-α, to promote cell migration, which suggested that activation of noncanonical Wnt signaling pathway is associated with PKC-α. However, the chronic exposure (3 weeks) of cells to TPA completely suppressed Wnt5a expression and the expression of PKC-η and PKC-δ, whereas the expression of Wnt3a and PKC-θ were up-regulated to activate the canonical Wnt signaling pathway. Moreover, the loss of epithelial markers, including E-cadherin and GATA-3, suggested that chronic exposure of TPA stimulates EMT. Taken together, our data suggest that PKC-θ positively regulates the canonical Wnt signaling pathway, and that PKC-η and PKC-δ negatively modulate this signaling pathway.
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Affiliation(s)
- Soyoung Kim
- Department of Pharmacology, School of Medicine and Intractable Disease Research Center, Dongguk University, 123 Dongdae-ro, Gyeongju-si, Gyeongsangbuk-do 38066, Republic of Korea
| | - So-Young Chun
- Department of Pharmacology, School of Medicine and Intractable Disease Research Center, Dongguk University, 123 Dongdae-ro, Gyeongju-si, Gyeongsangbuk-do 38066, Republic of Korea
| | - Yun-Suk Kwon
- Department of Pharmacology, School of Medicine and Intractable Disease Research Center, Dongguk University, 123 Dongdae-ro, Gyeongju-si, Gyeongsangbuk-do 38066, Republic of Korea
| | - Kyung-Soo Nam
- Department of Pharmacology, School of Medicine and Intractable Disease Research Center, Dongguk University, 123 Dongdae-ro, Gyeongju-si, Gyeongsangbuk-do 38066, Republic of Korea.
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Cooper NH, Balachandra JP, Hardman MJ. Global Gene Expression Analysis in PKCα-/- Mouse Skin Reveals Structural Changes in the Dermis and Defective Wound Granulation Tissue. J Invest Dermatol 2015; 135:3173-3182. [PMID: 26354149 DOI: 10.1038/jid.2015.338] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Revised: 08/10/2015] [Accepted: 08/12/2015] [Indexed: 01/06/2023]
Abstract
The skin's mechanical integrity is maintained by an organized and robust dermal extracellular matrix (ECM). Resistance to mechanical disruption hinges primarily on homeostasis of the dermal collagen fibril architecture, which is regulated, at least in part, by members of the small leucine-rich proteoglycan (SLRP) family. Here we present data linking protein kinase C alpha (PKCα) to the regulated expression of multiple ECM components including SLRPs. Global microarray profiling reveals deficiencies in ECM gene expression in PKCα-/- skin correlating with abnormal collagen fibril morphology, disorganized dermal architecture, and reduced skin strength. Detailed analysis of the skin and wounds from wild-type and PKCα-/- mice reveals a failure to upregulate collagen and other ECM components in response to injury, resulting in delayed granulation tissue deposition in PKCα-/- wounds. Thus, our data reveal a previously unappreciated role for PKCα in the regulation of ECM structure and deposition during skin wound healing.
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Affiliation(s)
- Nichola H Cooper
- The Healing Foundation Centre, Faculty of Life Sciences, University of Manchester, Manchester, UK; Institute of Medical Biology, Epithelial Epigenetics Laboratory, Agency for Science, Technology and Research, Singapore, Singapore
| | - Jeya P Balachandra
- The Healing Foundation Centre, Faculty of Life Sciences, University of Manchester, Manchester, UK
| | - Matthew J Hardman
- The Healing Foundation Centre, Faculty of Life Sciences, University of Manchester, Manchester, UK.
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Freiberger SN, Cheng PF, Iotzova-Weiss G, Neu J, Liu Q, Dziunycz P, Zibert JR, Dummer R, Skak K, Levesque MP, Hofbauer GFL. Ingenol Mebutate Signals via PKC/MEK/ERK in Keratinocytes and Induces Interleukin Decoy Receptors IL1R2 and IL13RA2. Mol Cancer Ther 2015; 14:2132-42. [PMID: 26116359 DOI: 10.1158/1535-7163.mct-15-0023-t] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2015] [Accepted: 06/02/2015] [Indexed: 11/16/2022]
Abstract
Squamous cell carcinoma (SCC) is the second most common human skin cancer and the second leading cause of skin cancer-related death. Recently, a new compound, ingenol mebutate, was approved for treatment of actinic keratosis, a precursor of SCC. As the mechanism of action is poorly understood, we have further investigated the mechanism of ingenol mebutate-induced cell death. We elucidate direct effects of ingenol mebutate on primary keratinocytes, patient-derived SCC cells, and a SCC cell line. Transcriptional profiling followed by pathway analysis was performed on ingenol mebutate-treated primary keratinocytes and patient-derived SCC cells to find key mediators and identify the mechanism of action. Activation of the resulting pathways was confirmed in cells and human skin explants and supported by a phosphorylation screen of treated primary cells. The necessity of these pathways was demonstrated by inhibition of certain pathway components. Ingenol mebutate inhibited viability and proliferation of all keratinocyte-derived cells in a biphasic manner. Transcriptional profiling identified the involvement of PKC/MEK/ERK signaling in the mechanism of action and inhibition of this signaling pathway rescued ingenol mebutate-induced cell death after treatment with 100 nmol/L ingenol mebutate, the optimal concentration for the first peak of response. We found the interleukin decoy receptors IL1R2 and IL13RA2 induced by ingenol mebutate in a PKC/MEK/ERK-dependent manner. Furthermore, siRNA knockdown of IL1R2 and IL13RA2 partially rescued ingenol mebutate-treated cells. In conclusion, we have shown that ingenol mebutate-induced cell death is mediated through the PKCδ/MEK/ERK pathway, and we have functionally linked the downstream induction of IL1R2 and IL13RA2 expression to the reduced viability of ingenol mebutate-treated cells.
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Affiliation(s)
| | - Phil F Cheng
- Department of Dermatology, University Hospital Zurich, Switzerland
| | | | - Johannes Neu
- Department of Dermatology, University Hospital Zurich, Switzerland
| | - Qinxiu Liu
- Department of Dermatology, University Hospital Zurich, Switzerland
| | - Piotr Dziunycz
- Department of Dermatology, University Hospital Zurich, Switzerland
| | | | - Reinhard Dummer
- Department of Dermatology, University Hospital Zurich, Switzerland
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PKCδ maintains phenotypes of tumor initiating cells through cytokine-mediated autocrine loop with positive feedback. Oncogene 2015; 34:5749-59. [DOI: 10.1038/onc.2015.29] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2014] [Revised: 12/27/2014] [Accepted: 01/23/2015] [Indexed: 02/08/2023]
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Fang W, Fu C, Chen X, Mou X, Liu F, Qian J, Zhao P, Zheng Y, Zheng YI, Deng J, Ye P, Wang Y, Zheng S. Neurokinin-2 receptor polymorphism predicts lymph node metastasis in colorectal cancer patients. Oncol Lett 2015; 9:2003-2006. [PMID: 26137002 DOI: 10.3892/ol.2015.3016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2014] [Accepted: 01/16/2015] [Indexed: 11/05/2022] Open
Abstract
To analyze the single nucleotide polymorphisms (SNPs) of two subtypes of neurokinin (NK) receptors, NK1R and NK2R (also known as TAC1R and TAC2R), in colorectal cancer (CRC), peripheral blood samples were collected from 199 CRC patients. Direct-sequencing was performed to identify the NK1R rs10198644 and NK2R rs4644560 SNPs. Genotype results were correlated with clinical factors. The allele frequencies of NK1R rs10198644 GC, CC and GG were 52, 17 and 31%, respectively, while that of NK2R rs4644560 GC, CC, and GG were 36, 50 and 14%, respectively. Patients with NK2R rs4644560 GC exhibited more positive lymph nodes than those with CC (mean, 2.2 vs. 1.3; P=0.016). Further analysis highlighted that the number of positive lymph nodes was also increased in the NK2R rs4644560 GC/NK1R rs10198644 GG group compared with the NK2R rs4644560 GG/NK1R rs10198644 GG group (mean, 2.2 vs. 0.9; P=0.04). These data suggested that the NK2R rs4644560 GC polymorphism alone or combination with NK1R rs10198644 GG may be a promising prognostic marker of lymph node metastasis in CRC patients.
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Affiliation(s)
- Weijia Fang
- Biotherapy Center, Department of Medical Oncology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
| | - Caiyun Fu
- Lab of Proteomics and Molecular Enzymology, School of Life Sciences, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, P.R. China ; Institute for Cell-based Drug Development of Zhejiang Province, Hangzhou, Zhejiang 310058, P.R. China
| | - Xiaogang Chen
- Biotherapy Center, Department of Medical Oncology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
| | - Xiaozhou Mou
- Biotherapy Center, Department of Medical Oncology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China ; Institute for Cell-based Drug Development of Zhejiang Province, Hangzhou, Zhejiang 310058, P.R. China
| | - Fanlong Liu
- Biotherapy Center, Department of Medical Oncology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
| | - Jiong Qian
- Biotherapy Center, Department of Medical Oncology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
| | - Peng Zhao
- Biotherapy Center, Department of Medical Oncology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
| | - Yulong Zheng
- Biotherapy Center, Department of Medical Oncology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
| | - Y I Zheng
- Biotherapy Center, Department of Medical Oncology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
| | - Jing Deng
- Biotherapy Center, Department of Medical Oncology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
| | - Pingjiang Ye
- Department of Anorectum, People's Hospital of Shaoxing, Shaoxing, Zhejiang 312000, P.R. China
| | - Yifei Wang
- Second People's Hospital of Jiaxing, Jiaxing, Zhejiang 314000, P.R. China
| | - Shusen Zheng
- Biotherapy Center, Department of Medical Oncology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
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Xue J, Chen Y, Wu Y, Wang Z, Zhou A, Zhang S, Lin K, Aldape K, Majumder S, Lu Z, Huang S. Tumour suppressor TRIM33 targets nuclear β-catenin degradation. Nat Commun 2015; 6:6156. [PMID: 25639486 PMCID: PMC4315364 DOI: 10.1038/ncomms7156] [Citation(s) in RCA: 109] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2014] [Accepted: 12/15/2014] [Indexed: 01/15/2023] Open
Abstract
Aberrant activation of β-catenin in the nucleus has been implicated in a variety of human cancers but the fate of nuclear β-catenin is unknown. Here we demonstrate that tripartite motif-containing protein 33 (TRIM33), acting as an E3 ubiquitin ligase, reduces the abundance of nuclear β-catenin protein. TRIM33-mediated β-catenin is destabilized and is GSK-3β or β-TrCP independent. TRIM33 interacts with and ubiquitylates nuclear β-catenin. Moreover, protein kinase Cδ, which directly phosphorylates β-catenin at Ser715, is required for the TRIM33–β-catenin interaction. The function of TRIM33 in suppressing tumour cell proliferation and brain tumour development depends on TRIM33-promoted β-catenin degradation. In human glioblastoma specimens, endogenous TRIM33 levels are inversely correlated with β-catenin. In summary, our findings identify TRIM33 as a tumour suppressor that can abolish tumour cell proliferation and tumorigenesis by degrading nuclear β-catenin. This work suggests a new therapeutic strategy against human cancers caused by aberrant activation of β-catenin.
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Affiliation(s)
- Jianfei Xue
- Department of Neurosurgery, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA
| | - Yaohui Chen
- Department of Neurosurgery, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA
| | - Yamei Wu
- Department of Neurosurgery, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA
| | - Zhongyong Wang
- Department of Neurosurgery, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA
| | - Aidong Zhou
- Department of Neurosurgery, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA
| | - Sicong Zhang
- 1] Department of Neurosurgery, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA [2] Program in Cancer Biology, The University of Texas Graduate School of Biomedical Sciences at Houston, Houston, Texas 77030, USA
| | - Kangyu Lin
- Department of Neurosurgery, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA
| | - Kenneth Aldape
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA
| | - Sadhan Majumder
- 1] Program in Cancer Biology, The University of Texas Graduate School of Biomedical Sciences at Houston, Houston, Texas 77030, USA [2] Department of Genetics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA
| | - Zhimin Lu
- 1] Program in Cancer Biology, The University of Texas Graduate School of Biomedical Sciences at Houston, Houston, Texas 77030, USA [2] Department of Neuro-Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA
| | - Suyun Huang
- 1] Department of Neurosurgery, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA [2] Program in Cancer Biology, The University of Texas Graduate School of Biomedical Sciences at Houston, Houston, Texas 77030, USA
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Antal CE, Hudson AM, Kang E, Zanca C, Wirth C, Stephenson NL, Trotter EW, Gallegos LL, Miller CJ, Furnari FB, Hunter T, Brognard J, Newton AC. Cancer-associated protein kinase C mutations reveal kinase's role as tumor suppressor. Cell 2015; 160:489-502. [PMID: 25619690 PMCID: PMC4313737 DOI: 10.1016/j.cell.2015.01.001] [Citation(s) in RCA: 247] [Impact Index Per Article: 27.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2014] [Revised: 11/12/2014] [Accepted: 12/24/2014] [Indexed: 12/24/2022]
Abstract
Protein kinase C (PKC) isozymes have remained elusive cancer targets despite the unambiguous tumor promoting function of their potent ligands, phorbol esters, and the prevalence of their mutations. We analyzed 8% of PKC mutations identified in human cancers and found that, surprisingly, most were loss of function and none were activating. Loss-of-function mutations occurred in all PKC subgroups and impeded second-messenger binding, phosphorylation, or catalysis. Correction of a loss-of-function PKCβ mutation by CRISPR-mediated genome editing in a patient-derived colon cancer cell line suppressed anchorage-independent growth and reduced tumor growth in a xenograft model. Hemizygous deletion promoted anchorage-independent growth, revealing that PKCβ is haploinsufficient for tumor suppression. Several mutations were dominant negative, suppressing global PKC signaling output, and bioinformatic analysis suggested that PKC mutations cooperate with co-occurring mutations in cancer drivers. These data establish that PKC isozymes generally function as tumor suppressors, indicating that therapies should focus on restoring, not inhibiting, PKC activity.
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Affiliation(s)
- Corina E Antal
- Department of Pharmacology, University of California at San Diego, La Jolla, CA 92093, USA; Biomedical Sciences Graduate Program, University of California at San Diego, La Jolla, CA 92093, USA
| | - Andrew M Hudson
- Signalling Networks in Cancer Group, Cancer Research UK Manchester Institute, University of Manchester, Manchester M20 4BX, UK
| | - Emily Kang
- Department of Pharmacology, University of California at San Diego, La Jolla, CA 92093, USA
| | - Ciro Zanca
- Ludwig Institute for Cancer Research, University of California at San Diego, La Jolla, CA 92093, USA
| | - Christopher Wirth
- Applied Computational Biology and Bioinformatics Group, Cancer Research UK Manchester Institute, University of Manchester, Manchester M20 4BX, UK
| | - Natalie L Stephenson
- Signalling Networks in Cancer Group, Cancer Research UK Manchester Institute, University of Manchester, Manchester M20 4BX, UK
| | - Eleanor W Trotter
- Signalling Networks in Cancer Group, Cancer Research UK Manchester Institute, University of Manchester, Manchester M20 4BX, UK
| | - Lisa L Gallegos
- Department of Pharmacology, University of California at San Diego, La Jolla, CA 92093, USA; Biomedical Sciences Graduate Program, University of California at San Diego, La Jolla, CA 92093, USA
| | - Crispin J Miller
- Applied Computational Biology and Bioinformatics Group, Cancer Research UK Manchester Institute, University of Manchester, Manchester M20 4BX, UK
| | - Frank B Furnari
- Ludwig Institute for Cancer Research, University of California at San Diego, La Jolla, CA 92093, USA
| | | | - John Brognard
- Signalling Networks in Cancer Group, Cancer Research UK Manchester Institute, University of Manchester, Manchester M20 4BX, UK.
| | - Alexandra C Newton
- Department of Pharmacology, University of California at San Diego, La Jolla, CA 92093, USA.
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ZHAO HENAN, BI TIE, QU ZHENYUN, JIANG JIYONG, CUI SHIYING, WANG YAN. Expression of miR-224-5p is associated with the original cisplatin resistance of ovarian papillary serous carcinoma. Oncol Rep 2014; 32:1003-12. [DOI: 10.3892/or.2014.3311] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Accepted: 06/05/2014] [Indexed: 11/06/2022] Open
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Sadik NAH, Shaker OG. Inhibitory effect of a standardized pomegranate fruit extract on Wnt signalling in 1, 2-dimethylhydrazine induced rat colon carcinogenesis. Dig Dis Sci 2013; 58:2507-17. [PMID: 23722564 DOI: 10.1007/s10620-013-2704-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Accepted: 04/24/2013] [Indexed: 12/11/2022]
Abstract
BACKGROUND De-regulation of Wnt signalling is increasingly being implicated in both experimental and human carcinogenesis including colon cancer. AIMS Our goal was to identify possible dietary agents that block Wnt signalling as a step toward investigating new strategies for suppression of colon cancer. Pomegranate extract has emerged as an intriguing candidate due to its polyphenolic content. METHODS We used a 1,2-dimethylhydrazine dihydrochloride (DMH)-induced rat colon carcinogenesis model to investigate the expression pattern of the main key players in Wnt signalling by reverse transcription polymerase chain reaction (RT-PCR) analysis. RESULTS Our results showed that many Wnt-target genes, e.g., Wnt5a, frizzled receptor (FRZ)-8, β-catenin, T cell factor/lymphoid enhancer binding protein (Tcf4/Lef1), c-myc and cyclin D1, were up-regulated whereas adenomatous polyposis coli (APC) and axin1 exhibited down-regulation in colonic tissues of our DMH-colon cancer group compared with the normal group. Standardized pomegranate extract minimised all the aberrant alterations observed in the studied Wnt genes in colonic tissues of the DMH+pomegranate group as compared with the DMH-induced colon cancer group. This effect was also confirmed by the normalization of survival rate, inhibition of tumour incidence and a reduction of serum tumour marker carcinoembryonic antigen (CEA) level. Histopathological observations provided supportive evidence for the biochemical and molecular analyses. CONCLUSIONS Standardized pomegranate extract holds great promise in the field of colon cancer prevention by dietary agents.
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Affiliation(s)
- Nermin Abdel Hamid Sadik
- Biochemistry Department, Faculty of Pharmacy, Cairo University, Kasr El-Eini Street, Cairo, 11562, Egypt.
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