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Liu Y, Suhail Y, Novin A, Afzal J, Pant A, Kshitiz. Lactate in breast cancer cells is associated with evasion of hypoxia-induced cell cycle arrest and adverse patient outcome. Hum Cell 2024; 37:768-781. [PMID: 38478356 DOI: 10.1007/s13577-024-01046-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Accepted: 02/14/2024] [Indexed: 04/15/2024]
Abstract
Tumor hypoxia is a common microenvironmental factor in breast cancers, resulting in stabilization of Hypoxia-Inducible Factor 1 (HIF-1), the master regulator of hypoxic response in cells. Metabolic adaptation by HIF-1 results in inhibition of citric acid cycle, causing accumulation of lactate in large concentrations in hypoxic cancers. Lactate can therefore serve as a secondary microenvironmental factor influencing cellular response to hypoxia. Presence of lactate can alter the hypoxic response of breast cancers in many ways, sometimes in opposite manners. Lactate stabilizes HIF-1 in oxidative condition, as well as destabilizes HIF-1 in hypoxia, increases cellular acidification, and mitigates HIF-1-driven inhibition of cellular respiration. We therefore tested the effect of lactate in MDA-MB-231 under hypoxia, finding that lactate can activate pathways associated with DNA replication, and cell cycling, as well as tissue morphogenesis associated with invasive processes. Using a bioengineered nano-patterned stromal invasion assay, we also confirmed that high lactate and induced HIF-1α gene overexpression can synergistically promote MDA-MB-231 dissemination and stromal trespass. Furthermore, using The Cancer Genome Atlas, we also surprisingly found that lactate in hypoxia promotes gene expression signatures prognosticating low survival in breast cancer patients. Our work documents that lactate accumulation contributes to increased heterogeneity in breast cancer gene expression promoting cancer growth and reducing patient survival.
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Affiliation(s)
- Yamin Liu
- Department of Biomedical Engineering, University of Connecticut Health, Farmington, CT, USA
| | - Yasir Suhail
- Department of Biomedical Engineering, University of Connecticut Health, Farmington, CT, USA
- Center for Cell Analysis and Modeling, University of Connecticut Health, Farmington, CT, USA
| | - Ashkan Novin
- Department of Biomedical Engineering, University of Connecticut Health, Farmington, CT, USA
| | - Junaid Afzal
- Department of Medicine, University of California San Francisco, San Francisco, CA, USA
| | - Aditya Pant
- Department of Biomedical Engineering, University of Connecticut Health, Farmington, CT, USA
- NEAG Comprehensive Cancer Center, University of Connecticut Health, Farmington, CT, USA
| | - Kshitiz
- Department of Biomedical Engineering, University of Connecticut Health, Farmington, CT, USA.
- Center for Cell Analysis and Modeling, University of Connecticut Health, Farmington, CT, USA.
- Department of Medicine, University of California San Francisco, San Francisco, CA, USA.
- NEAG Comprehensive Cancer Center, University of Connecticut Health, Farmington, CT, USA.
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Liu HY, Sun XJ, Xiu SY, Zhang XY, Wang ZQ, Gu YL, Yi CX, Liu JY, Dai YS, Yuan X, Liao HP, Liu ZM, Pang XC, Li TC. Frizzled receptors (FZDs) in Wnt signaling: potential therapeutic targets for human cancers. Acta Pharmacol Sin 2024:10.1038/s41401-024-01270-3. [PMID: 38632318 DOI: 10.1038/s41401-024-01270-3] [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: 11/22/2023] [Accepted: 03/24/2024] [Indexed: 04/19/2024] Open
Abstract
Frizzled receptors (FZDs) are key contributors intrinsic to the Wnt signaling pathway, activation of FZDs triggering the Wnt signaling cascade is frequently observed in human tumors and intimately associated with an aggressive carcinoma phenotype. It has been shown that the abnormal expression of FZD receptors contributes to the manifestation of malignant characteristics in human tumors such as enhanced cell proliferation, metastasis, chemotherapy resistance as well as the acquisition of cancer stemness. Given the essential roles of FZD receptors in the Wnt signaling in human tumors, this review aims to consolidate the prevailing knowledge on the specific status of FZD receptors (FZD1-10) and elucidate their respective functions in tumor progression. Furthermore, we delineate the structural basis for binding of FZD and its co-receptors to Wnt, and provide a better theoretical foundation for subsequent studies on related mechanisms. Finally, we describe the existing biological classes of small molecule-based FZD inhibitors in detail in the hope that they can provide useful assistance for design and development of novel drug candidates targeted FZDs.
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Affiliation(s)
- Hui-Yu Liu
- Department of Otorhinolaryngology Head and Neck Surgery, Peking University First Hospital, Beijing, 100034, China
| | - Xiao-Jiao Sun
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Si-Yu Xiu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Xiang-Yu Zhang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Zhi-Qi Wang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Yan-Lun Gu
- Department of Pharmacy, Peking University First Hospital, Beijing, 100034, China
| | - Chu-Xiao Yi
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Jun-Yan Liu
- Department of Otorhinolaryngology Head and Neck Surgery, Peking University First Hospital, Beijing, 100034, China
| | - Yu-Song Dai
- Department of Otorhinolaryngology Head and Neck Surgery, Peking University First Hospital, Beijing, 100034, China
| | - Xia Yuan
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Hua-Peng Liao
- Yizhang County People's Hospital, Chenzhou, 424200, China
| | - Zhen-Ming Liu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China.
| | - Xiao-Cong Pang
- Department of Pharmacy, Peking University First Hospital, Beijing, 100034, China.
| | - Tian-Cheng Li
- Department of Otorhinolaryngology Head and Neck Surgery, Peking University First Hospital, Beijing, 100034, China.
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing, 100034, China.
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Khan SU, Rayees S, Sharma P, Malik F. Targeting redox regulation and autophagy systems in cancer stem cells. Clin Exp Med 2023; 23:1405-1423. [PMID: 36473988 DOI: 10.1007/s10238-022-00955-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Accepted: 11/16/2022] [Indexed: 12/12/2022]
Abstract
Cancer is a dysregulated cellular level pathological condition that results in tumor formation followed by metastasis. In the heterogeneous tumor architecture, cancer stem cells (CSCs) are essential to push forward the progression of tumors due to their strong pro-tumor properties such as stemness, self-renewal, plasticity, metastasis, and being poorly responsive to radiotherapy and chemotherapeutic agents. Cancer stem cells have the ability to withstand various stress pressures by modulating transcriptional and translational mechanisms, and adaptable metabolic changes. Owing to CSCs heterogeneity and plasticity, these cells display varied metabolic and redox profiles across different types of cancers. It has been established that there is a disparity in the levels of Reactive Oxygen Species (ROS) generated in CSCs vs Non-CSC and these differential levels are detected across different tumors. CSCs have unique metabolic demands and are known to change plasticity during metastasis by passing through the interchangeable epithelial and mesenchymal-like phenotypes. During the metastatic process, tumor cells undergo epithelial to mesenchymal transition (EMT) thus attaining invasive properties while leaving the primary tumor site, similarly during the course of circulation and extravasation at a distant organ, these cells regain their epithelial characteristics through Mesenchymal to Epithelial Transition (MET) to initiate micrometastasis. It has been evidenced that levels of Reactive Oxygen Species (ROS) and associated metabolic activities vary between the epithelial and mesenchymal states of CSCs. Similarly, the levels of oxidative and metabolic states were observed to get altered in CSCs post-drug treatments. As oxidative and metabolic changes guide the onset of autophagy in cells, its role in self-renewal, quiescence, proliferation and response to drug treatment is well established. This review will highlight the molecular mechanisms useful for expanding therapeutic strategies based on modulating redox regulation and autophagy activation to targets. Specifically, we will account for the mounting data that focus on the role of ROS generated by different metabolic pathways and autophagy regulation in eradicating stem-like cells hereafter referred to as cancer stem cells (CSCs).
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Affiliation(s)
- Sameer Ullah Khan
- Division of Cancer Pharmacology, CSIR-Indian Institute of Integrative Medicine, Srinagar, 190005, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Sheikh Rayees
- PK PD Toxicology Division, CSIR-Indian Institute of Integrative Medicine, Jammu, India
| | - Pankaj Sharma
- Division of Cancer Pharmacology, CSIR-Indian Institute of Integrative Medicine, Srinagar, 190005, India
| | - Fayaz Malik
- Division of Cancer Pharmacology, CSIR-Indian Institute of Integrative Medicine, Srinagar, 190005, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
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Banerjee M, Devi Rajeswari V. A novel cross-communication of HIF-1α and HIF-2α with Wnt signaling in TNBC and influence of hypoxic microenvironment in the formation of an organ-on-chip model of breast cancer. Med Oncol 2023; 40:245. [PMID: 37454033 DOI: 10.1007/s12032-023-02112-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Accepted: 07/01/2023] [Indexed: 07/18/2023]
Abstract
The microenvironment role is very important in cancer development. The epithelial-mesenchymal transition of the cancer cells depends upon specific signaling and microenvironmental conditions, such as hypoxic conditions. The crosstalk between hypoxia and Wnt signaling through some molecular mechanism in TNBC is related. Cross-communication between hypoxia and Wnt signaling in cancer cells is known, but the detailed mechanism in TNBC is unknown. This review includes the role of the hypoxia microenvironment in TNBC and the novel crosstalk of the Wnt signaling and hypoxia. When targeted, the new pathway and crosstalk link may be a solution for metastatic TNBC and chemoresistance. The microenvironment influences cancer's metastasis, which changes from person to person. Therefore, organ-on-a-chip is a very novel model to test the drugs clinically before going for human trials, focusing on personalized medications can be done. The effect of the hypoxia microenvironment on breast cancer stem cells is still unknown. Apart from all the published papers, this paper mainly focuses only on the hypoxic microenvironment and its association with the growth of TNBC. The medicines or small proteins, drugs, mimics, and inhibitors targeting wnt and hypoxia genes are consolidated in this review paper.
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Affiliation(s)
- Manosi Banerjee
- Department of Biomedical Science, School of Bioscience and Technology, Vellore Institute of Technology, Vellore, 632014, Tamil Nadu, India
| | - V Devi Rajeswari
- Department of Biomedical Science, School of Bioscience and Technology, Vellore Institute of Technology, Vellore, 632014, Tamil Nadu, India.
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Ordaz-Ramos A, Tellez-Jimenez O, Vazquez-Santillan K. Signaling pathways governing the maintenance of breast cancer stem cells and their therapeutic implications. Front Cell Dev Biol 2023; 11:1221175. [PMID: 37492224 PMCID: PMC10363614 DOI: 10.3389/fcell.2023.1221175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Accepted: 06/28/2023] [Indexed: 07/27/2023] Open
Abstract
Breast cancer stem cells (BCSCs) represent a distinct subpopulation of cells with the ability to self-renewal and differentiate into phenotypically diverse tumor cells. The involvement of CSC in treatment resistance and cancer recurrence has been well established. Numerous studies have provided compelling evidence that the self-renewal ability of cancer stem cells is tightly regulated by specific signaling pathways, which exert critical roles to maintain an undifferentiated phenotype and prevent the differentiation of CSCs. Signaling pathways such as Wnt/β-catenin, NF-κB, Notch, Hedgehog, TGF-β, and Hippo have been implicated in the promotion of self-renewal of many normal and cancer stem cells. Given the pivotal role of BCSCs in driving breast cancer aggressiveness, targeting self-renewal signaling pathways holds promise as a viable therapeutic strategy for combating this disease. In this review, we will discuss the main signaling pathways involved in the maintenance of the self-renewal ability of BCSC, while also highlighting current strategies employed to disrupt the signaling molecules associated with stemness.
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Affiliation(s)
- Alejandro Ordaz-Ramos
- Innovation in Precision Medicine Laboratory, Instituto Nacional de Medicina Genómica, Mexico City, México
- Posgrado en Ciencias Biológicas, Unidad de Posgrado, Circuito de Posgrados, Ciudad Universitaria, Coyoacán, México
| | - Olivia Tellez-Jimenez
- Innovation in Precision Medicine Laboratory, Instituto Nacional de Medicina Genómica, Mexico City, México
- Posgrado en Ciencias Biológicas, Unidad de Posgrado, Circuito de Posgrados, Ciudad Universitaria, Coyoacán, México
| | - Karla Vazquez-Santillan
- Innovation in Precision Medicine Laboratory, Instituto Nacional de Medicina Genómica, Mexico City, México
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Park AY, Han MR, Seo BK, Ju HY, Son GS, Lee HY, Chang YW, Choi J, Cho KR, Song SE, Woo OH, Park HS. MRI-based breast cancer radiogenomics using RNA profiling: association with subtypes in a single-center prospective study. Breast Cancer Res 2023; 25:79. [PMID: 37391754 PMCID: PMC10311893 DOI: 10.1186/s13058-023-01668-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 05/31/2023] [Indexed: 07/02/2023] Open
Abstract
BACKGROUND There are few prospective studies on the correlations between MRI features and whole RNA-sequencing data in breast cancer according to molecular subtypes. The purpose of our study was to explore the association between genetic profiles and MRI phenotypes of breast cancer and to identify imaging markers that influences the prognosis and treatment according to subtypes. METHODS From June 2017 to August 2018, MRIs of 95 women with invasive breast cancer were prospectively analyzed, using the breast imaging-reporting and data system and texture analysis. Whole RNA obtained from surgical specimens was analyzed using next-generation sequencing. The association between MRI features and gene expression profiles was analyzed in the entire tumor and subtypes. Gene networks, enriched functions, and canonical pathways were analyzed using Ingenuity Pathway Analysis. The P value for differential expression was obtained using a parametric F test comparing nested linear models and adjusted for multiple testing by reporting Q value. RESULTS In 95 participants (mean age, 53 years ± 11 [standard deviation]), mass lesion type was associated with upregulation of CCL3L1 (sevenfold) and irregular mass shape was associated with downregulation of MIR421 (sixfold). In estrogen receptor-positive cancer with mass lesion type, CCL3L1 (21-fold), SNHG12 (11-fold), and MIR206 (sevenfold) were upregulated, and MIR597 (265-fold), MIR126 (12-fold), and SOX17 (fivefold) were downregulated. In triple-negative breast cancer with increased standard deviation of texture analysis on precontrast T1-weighted imaging, CLEC3A (23-fold), SRGN (13-fold), HSPG2 (sevenfold), KMT2D (fivefold), and VMP1 (fivefold) were upregulated, and IGLC2 (73-fold) and PRDX4 (sevenfold) were downregulated (all, P < 0.05 and Q < 0.1). Gene network and functional analysis showed that mass type estrogen receptor-positive cancers were associated with cell growth, anti-estrogen resistance, and poor survival. CONCLUSION MRI characteristics are associated with the different expressions of genes related to metastasis, anti-drug resistance, and prognosis, depending on the molecular subtypes of breast cancer.
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Affiliation(s)
- Ah Young Park
- Department of Radiology, CHA Bundang Medical Center, CHA University, Seongnam, Republic of Korea
| | - Mi-Ryung Han
- Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon, Republic of Korea
| | - Bo Kyoung Seo
- Department of Radiology, Korea University Ansan Hospital, Korea University College of Medicine, 123 Jeokgeum-ro, Danwon-gu, Ansan City, Gyeonggi-do, 15355, Republic of Korea.
| | - Hye-Yeon Ju
- Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon, Republic of Korea
| | - Gil Soo Son
- Division of Breast and Endocrine Surgery, Department of Surgery, Korea University Ansan Hospital, Korea University College of Medicine, Ansan City, Gyeonggi-do, Republic of Korea
| | - Hye Yoon Lee
- Division of Breast and Endocrine Surgery, Department of Surgery, Korea University Ansan Hospital, Korea University College of Medicine, Ansan City, Gyeonggi-do, Republic of Korea
| | - Young Woo Chang
- Division of Breast and Endocrine Surgery, Department of Surgery, Korea University Ansan Hospital, Korea University College of Medicine, Ansan City, Gyeonggi-do, Republic of Korea
| | - Jungyoon Choi
- Division of Hematology/Oncology, Department of Internal Medicine, Korea University Ansan Hospital, Korea University College of Medicine, Ansan City, Gyeonggi-do, Republic of Korea
| | - Kyu Ran Cho
- Department of Radiology, Korea University Anam Hospital, Korea University College of Medicine, Seoul, Republic of Korea
| | - Sung Eun Song
- Department of Radiology, Korea University Anam Hospital, Korea University College of Medicine, Seoul, Republic of Korea
| | - Ok Hee Woo
- Department of Radiology, Korea University Guro Hospital, Korea University College of Medicine, Seoul, Republic of Korea
| | - Hyun Soo Park
- Department of Radiology, Korea University Ansan Hospital, Korea University College of Medicine, 123 Jeokgeum-ro, Danwon-gu, Ansan City, Gyeonggi-do, 15355, Republic of Korea
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Wang X, Zhang W, Guo Y, Zhang Y, Bai X, Xie Y. Identification of critical prognosis signature associated with lymph node metastasis of stomach adenocarcinomas. World J Surg Oncol 2023; 21:61. [PMID: 36823639 PMCID: PMC9948474 DOI: 10.1186/s12957-023-02940-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Accepted: 02/11/2023] [Indexed: 02/25/2023] Open
Abstract
Lymph node metastasis (LNM) is an important factor affecting the prognosis of patients with gastric adenocarcinoma (STAD), which is the most common malignancy of the human digestive system. Current detection techniques have limited sensitivity and specificity, and there is a lack of effective biomarkers to screen for LNM. Therefore, it is critical to screen for biomarkers that predict LNM in STAD. Gene expression differential analysis (false discovery rate < 0.05, |log2Fold change| ≥1.5) was performed on 102 LNM samples, 224 non-LNM samples, and 29 normal gastric tissue samples from The Cancer Genome Atlas (TCGA) STAD dataset, and 269 LNM-specific genes (DEGs) were obtained. Enrichment analysis showed that LNM-specific genes functioned mainly in cytokine-cytokine receptor interactions, calcium signaling, and other pathways. Ten DEGs significantly associated with overall survival in STAD patients were screened by multivariate Cox regression, and an LNM-based 10-mRNA prognostic signature was established (Logrank P < 0.0001). This 10-mRNA signature was well predicted in both the TCGA training set and the Gene Expression Omnibus validation dataset (GSE84437) and was associated with survival in patients with LNM or advanced-stage STAD. Using Kaplan-Meier survival, receiver operating characteristic curve, C-index analysis, and decision curve analysis, the 10-mRNA signature was found to be a more effective predictor of prognosis in STAD patients than the other two reported models (P < 0.0005). Protein-protein interaction network and gene set enrichment analysis of the 10-mRNA signature revealed that the signature may affect the expression of multiple biological pathways and related genes. Finally, the expression levels of prognostic genes in STAD tissues and cell lines were verified using qRT-PCR, Western blot, and the Human Protein Atlas database. Taken together, the prognostic signature constructed in this study may become an indicator for clinical prognostic assessment of LNM-STAD and provide a new strategy for future targeted therapy.
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Affiliation(s)
- Xiaohui Wang
- Department of General Surgery, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China.
| | - Wei Zhang
- Department of General Surgery, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China
| | - Yulin Guo
- Department of General Surgery, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China
| | - Yifei Zhang
- Department of General Surgery, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China
| | - Xiaofeng Bai
- Department of Pancreatic and Gastric Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 100021, Beijing, China.
| | - Yibin Xie
- Department of Pancreatic and Gastric Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 100021, Beijing, China.
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Ning S, Liu C, Lou W, Yang JC, Lombard AP, D'Abronzo LS, Batra N, Yu AM, Leslie AR, Sharifi M, Evans CP, Gao AC. Bioengineered BERA-Wnt5a siRNA Targeting Wnt5a/FZD2 Signaling Suppresses Advanced Prostate Cancer Tumor Growth and Enhances Enzalutamide Treatment. Mol Cancer Ther 2022; 21:1594-1607. [PMID: 35930737 PMCID: PMC9547958 DOI: 10.1158/1535-7163.mct-22-0216] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 05/23/2022] [Accepted: 07/28/2022] [Indexed: 01/21/2023]
Abstract
The next-generation antiandrogen drugs such as enzalutamide and abiraterone extend survival times and improve quality of life in patients with advanced prostate cancer. However, resistance to both drugs occurs frequently through mechanisms that are incompletely understood. Wnt signaling, particularly through Wnt5a, plays vital roles in promoting prostate cancer progression and induction of resistance to enzalutamide and abiraterone. Development of novel strategies targeting Wnt5a to overcome resistance is an urgent need. In this study, we demonstrated that Wnt5a/FZD2-mediated noncanonical Wnt pathway is overexpressed in enzalutamide-resistant prostate cancer. In patient databases, both the levels of Wnt5a and FZD2 expression are upregulated upon the development of enzalutamide resistance and correlate with higher Gleason score, biochemical recurrence, and metastatic status, and with shortened disease-free survival duration. Blocking Wnt5a/FZD2 signal transduction not only diminished the activation of noncanonical Wnt signaling pathway, but also suppressed the constitutively activated androgen receptor (AR) and AR variants. Furthermore, we developed a novel bioengineered BERA-Wnt5a siRNA construct and demonstrated that inhibition of Wnt5a expression by the BERA-Wnt5a siRNA significantly suppressed tumor growth and enhanced enzalutamide treatment in vivo. These results indicate that Wnt5a/FZD2 signal pathway plays a critical role in promoting enzalutamide resistance, and targeting this pathway by BERA-Wnt5a siRNA can be developed as a potential therapy to treat advanced prostate cancer.
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Affiliation(s)
- Shu Ning
- Department of Urologic Surgery, University of California Davis, Davis, California
| | - Chengfei Liu
- Department of Urologic Surgery, University of California Davis, Davis, California
- UC Davis Comprehensive Cancer Center, University of California Davis, Davis, California
| | - Wei Lou
- Department of Urologic Surgery, University of California Davis, Davis, California
| | - Joy C Yang
- Department of Urologic Surgery, University of California Davis, Davis, California
| | - Alan P Lombard
- Department of Urologic Surgery, University of California Davis, Davis, California
| | - Leandro S D'Abronzo
- Department of Urologic Surgery, University of California Davis, Davis, California
| | - Neelu Batra
- UC Davis Comprehensive Cancer Center, University of California Davis, Davis, California
- Department of Biochemistry and Molecular Medicine, University of California Davis, Davis, California
| | - Ai-Ming Yu
- UC Davis Comprehensive Cancer Center, University of California Davis, Davis, California
- Department of Biochemistry and Molecular Medicine, University of California Davis, Davis, California
| | - Amy R Leslie
- Department of Urologic Surgery, University of California Davis, Davis, California
| | - Masuda Sharifi
- Department of Urologic Surgery, University of California Davis, Davis, California
| | - Christopher P Evans
- Department of Urologic Surgery, University of California Davis, Davis, California
- UC Davis Comprehensive Cancer Center, University of California Davis, Davis, California
| | - Allen C Gao
- Department of Urologic Surgery, University of California Davis, Davis, California
- UC Davis Comprehensive Cancer Center, University of California Davis, Davis, California
- VA Northern California Health Care System, Sacramento, California
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TAZ Regulates the Cisplatin Resistance of Epithelial Ovarian Cancer Cells via the ANGPTL4/SOX2 Axis. Anal Cell Pathol 2022; 2022:5632164. [PMID: 36247876 PMCID: PMC9553699 DOI: 10.1155/2022/5632164] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Revised: 05/20/2022] [Accepted: 08/04/2022] [Indexed: 11/28/2022] Open
Abstract
Objective Epithelial ovarian cancer (EOC) is a fatal gynecological malignancy. This study explored the mechanism of TAZ in regulating drug sensitivity of cisplatin (DDP-)-resistant EOC cells through the ANGPTL4/SOX2 axis. Methods The A2780/DDP cells were prepared by stepwise progressive concentration method. The drug resistance and TAZ expression in EOC cells were determined. Drug sensitivity was measured after TAZ overexpression in A2780 cells and TAZ downregulation in A2780/DDP cells, respectively. The effects of TAZ knockdown on apoptosis rate, stemness, and cancer stem cell (CSC) marker (CD44, OCT4, and ALDH1A) levels in A2780/DDP and DDP-treated A2780/DDP cells were assessed. The binding of TAZ and ANGPTL4 was verified using ChIP-qPCR, and ANGPTL4 and SOX2 levels were determined. The effects of different combined treatments of TAZ, ANGPTL4, and SOX2 on drug sensitivity of A2780/DDP cells and DDP-treated A2780/DDP cells were evaluated. Results TAZ was upregulated in drug-resistant EOC cells. TAZ knockdown significantly increased the drug sensitivity of A2780/DDP cells, while TAZ overexpression markedly decreased the drug sensitivity of A2780 cells. TAZ silencing promoted apoptosis of drug-resistant EOC cells and inhibited cell stemness. TAZ targeted ANGPTL4 and TAZ silencing enhanced drug sensitivity of A2780/DDP cells by inhibiting ANGPTL4. ANGPTL4 overexpression elevated SOX2 expression, and SOX2 downregulation reduced the drug resistance and promoted the apoptosis of A2780/DDP cells. Conclusion TAZ regulates DDP sensitivity of drug-resistant EOC cells via the ANGPTL4/SOX2 axis.
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Omics Analysis of Chemoresistant Triple Negative Breast Cancer Cells Reveals Novel Metabolic Vulnerabilities. Cells 2022; 11:cells11172719. [PMID: 36078127 PMCID: PMC9454761 DOI: 10.3390/cells11172719] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 08/23/2022] [Accepted: 08/25/2022] [Indexed: 11/16/2022] Open
Abstract
The emergence of drug resistance in cancer poses the greatest hurdle for successful therapeutic results and is associated with most cancer deaths. In triple negative breast cancer (TNBC), due to the lack of specific therapeutic targets, systemic chemotherapy is at the forefront of treatments, but it only benefits a fraction of patients because of the development of resistance. Cancer cells may possess an innate resistance to chemotherapeutic agents or develop new mechanisms of acquired resistance after long-term drug exposure. Such mechanisms involve an interplay between genetic, epigenetic and metabolic alterations that enable cancer cells to evade therapy. In this work, we generated and characterized a chemoresistant TNBC cell line to be used for the investigation of mechanisms that drive resistance to paclitaxel. Transcriptomic analysis highlighted the important role of metabolic-associated pathways in the resistant cells, prompting us to employ 1H-NMR to explore the metabolome and lipidome of these cells. We identified and described herein numerous metabolites and lipids that were significantly altered in the resistant cells. Integrated analysis of our omics data revealed MSMO1, an intermediate enzyme of cholesterol biosynthesis, as a novel mediator of chemoresistance in TNBC. Overall, our data provide a critical insight into the metabolic adaptations that accompany acquired resistance in TNBC and pinpoint potential new targets.
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Sompel K, Elango A, Smith AJ, Tennis MA. Cancer chemoprevention through Frizzled receptors and EMT. Discov Oncol 2021; 12:32. [PMID: 34604862 PMCID: PMC8429367 DOI: 10.1007/s12672-021-00429-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 08/31/2021] [Indexed: 12/11/2022] Open
Abstract
Frizzled (FZD) transmembrane receptors are well known for their role in β-catenin signaling and development and now understanding of their role in the context of cancer is growing. FZDs are often associated with the process of epithelial to mesenchymal transition (EMT) through β-catenin, but some also influence EMT through non-canonical pathways. With ten different FZDs, there is a wide range of activity from oncogenic to tumor suppressive depending on the tissue context. Alterations in FZD signaling can occur during development of premalignant lesions, supporting their potential as targets of chemoprevention agents. Agonizing or antagonizing FZD activity may affect EMT, which is a key process in lesion progression often targeted by chemoprevention agents. Recent studies identified a specific FZD as important for activity of an EMT inhibiting chemopreventive agent and other studies have highlighted the previously unrecognized potential for targeting small molecules to FZD receptors. This work demonstrates the value of investigating FZDs in chemoprevention and here we provide a review of FZDs in cancer EMT and their potential as chemoprevention targets.
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Affiliation(s)
- K. Sompel
- Division of Pulmonary Sciences and Critical Care Medicine, School of Medicine, University of Colorado Anschutz Medical Campus, 12700 E 19th AVE, RC2 Box C272, Aurora, CO 80045 USA
| | - A. Elango
- Division of Pulmonary Sciences and Critical Care Medicine, School of Medicine, University of Colorado Anschutz Medical Campus, 12700 E 19th AVE, RC2 Box C272, Aurora, CO 80045 USA
| | - A. J. Smith
- Division of Pulmonary Sciences and Critical Care Medicine, School of Medicine, University of Colorado Anschutz Medical Campus, 12700 E 19th AVE, RC2 Box C272, Aurora, CO 80045 USA
| | - M. A. Tennis
- Division of Pulmonary Sciences and Critical Care Medicine, School of Medicine, University of Colorado Anschutz Medical Campus, 12700 E 19th AVE, RC2 Box C272, Aurora, CO 80045 USA
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12
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Integrated lipidomics and proteomics reveal cardiolipin alterations, upregulation of HADHA and long chain fatty acids in pancreatic cancer stem cells. Sci Rep 2021; 11:13297. [PMID: 34168259 PMCID: PMC8225828 DOI: 10.1038/s41598-021-92752-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 06/15/2021] [Indexed: 02/06/2023] Open
Abstract
Pancreatic cancer stem cells (PCSCs) play a key role in the aggressiveness of pancreatic ductal adenocarcinomas (PDAC); however, little is known about their signaling and metabolic pathways. Here we show that PCSCs have specific and common proteome and lipidome modulations. PCSCs displayed downregulation of lactate dehydrogenase A chain, and upregulation of trifunctional enzyme subunit alpha. The upregulated proteins of PCSCs are mainly involved in fatty acid (FA) elongation and biosynthesis of unsaturated FAs. Accordingly, lipidomics reveals an increase in long and very long-chain unsaturated FAs, which are products of fatty acid elongase-5 predicted as a key gene. Moreover, lipidomics showed the induction in PCSCs of molecular species of cardiolipin with mixed incorporation of 16:0, 18:1, and 18:2 acyl chains. Our data indicate a crucial role of FA elongation and alteration in cardiolipin acyl chain composition in PCSCs, representing attractive therapeutic targets in PDAC.
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13
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Zhou M, Sun X, Zhu Y. Analysis of the role of Frizzled 2 in different cancer types. FEBS Open Bio 2021; 11:1195-1208. [PMID: 33565732 PMCID: PMC8016138 DOI: 10.1002/2211-5463.13111] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 01/28/2021] [Accepted: 01/30/2021] [Indexed: 01/02/2023] Open
Abstract
Frizzled 2 (FZD2) is an important receptor in the Wnt pathway, which is highly expressed in malignant tumors and helps regulate multiple tumor behaviors. Its expression level is related to prognosis. Here, bioinformatic analysis was performed to understand the expression of FZD2 in different tumors. We examined FZD2 expression using pan‐cancer data of 33 cancer types from The Cancer Genome Atlas (TCGA). Differential expression analysis (Wilcoxon's test) was used to compare tumor and normal tissues. Univariate Cox proportional hazard regression was performed to compare gene expression and overall patient survival. COSMIC, cBioPortal, and CCLE were used to examine FZD2 mutations in human cancers. Dryness index was calculated using one‐class logistic regression (OCLR). Spearman's correlation was performed based on gene expression and dryness score and used to analyze the correlation between gene expression and stemness score, matrix score, immune score, estimated score, tumor mutation burden (TMB), microsatellite instability (MSI), and drug sensitivity. STRING website was used to construct an FZD2 protein interaction network and identify genes that interact with FZD2. We report that FZD2 is highly expressed in most tumors, differing between cancer types. Expression was related to patient overall survival (OS), disease‐specific survival, disease‐free interval (DFI), mutations, drug sensitivity, tumor microenvironment, immune cell infiltration, immune checkpoint gene expression, immunotherapy indicators (TMB, MSI), and tumor cell stemness. FZD2 influenced drug sensitivities, including cobimetinib (r = −0.553, P < 0.001), selumetinib (r = −0.539, P < 0.001), bafetinib (r = −0.538, P < 0.001), tamoxifen (r = −0.523, P < 0.001), alvespimycin (r = −0.520, P < 0.001), and nilotinib (r = −0.502, P < 0.001). FZD2 has the most significant correlation with ROR2 (r = 0.4, P < 0.001), Wnt2 (r = 0.37, P < 0.001), and Wnt4A (r = 0.34, P < 0.001). The results confirm the importance of FZD2 expression in cancer prognosis and treatment, and provide new clues for treatment strategies.
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Affiliation(s)
| | - Xuezhu Sun
- West Anhui Health Vocational College, Anhui, China
| | - Yunhao Zhu
- West Anhui Health Vocational College, Anhui, China
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14
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Dong D, Na L, Zhou K, Wang Z, Sun Y, Zheng Q, Gao J, Zhao C, Wang W. FZD5 prevents epithelial-mesenchymal transition in gastric cancer. Cell Commun Signal 2021; 19:21. [PMID: 33618713 PMCID: PMC7898745 DOI: 10.1186/s12964-021-00708-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 01/18/2021] [Indexed: 12/11/2022] Open
Abstract
Background Frizzled (FZD) proteins function as receptors for WNT ligands. Members in FZD family including FZD2, FZD4, FZD7, FZD8 and FZD10 have been demonstrated to mediate cancer cell epithelial-mesenchymal transition (EMT). Methods CCLE and TCGA databases were interrogated to reveal the association of FZD5 with EMT. EMT was analyzed by investigating the alterations in CDH1 (E-cadherin), VIM (Vimentin) and ZEB1 expression, cell migration and cell morphology. Transcriptional modulation was determined by ChIP in combination with Real-time PCR. Survival was analyzed by Kaplan–Meier method. Results In contrast to other FZDs, FZD5 was identified to prevent EMT in gastric cancer. FZD5 maintains epithelial-like phenotype and is negatively modulated by transcription factors SNAI2 and TEAD1. Epithelial-specific factor ELF3 is a downstream effecter, and protein kinase C (PKC) links FZD5 to ELF3. ELF3 represses ZEB1 expression, further guarding against EMT. Moreover, FZD5 signaling requires its co-receptor LRP5 and WNT7B is a putative ligand for FZD5. FZD5 and ELF3 are associated with longer survival, whereas SNAI2 and TEAD1 are associated with shorter survival. Conclusions Taken together, FZD5-ELF3 signaling blocks EMT, and plays a potential tumor-suppressing role in gastric cancer. ![]()
Video Abstract
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Affiliation(s)
- Dan Dong
- Department of Pathophysiology, College of Basic Medical Science, China Medical University, Shenyang, People's Republic of China
| | - Lei Na
- Department of Pathophysiology, College of Basic Medical Science, China Medical University, Shenyang, People's Republic of China.,Department of Urology, Shengjing Hospital of China Medical University, Shenyang, People's Republic of China
| | - Kailing Zhou
- Department of Pathophysiology, College of Basic Medical Science, China Medical University, Shenyang, People's Republic of China
| | - Zhuo Wang
- Department of Pathophysiology, College of Basic Medical Science, China Medical University, Shenyang, People's Republic of China
| | - Yu Sun
- Department of Pathophysiology, College of Basic Medical Science, China Medical University, Shenyang, People's Republic of China
| | - Qianqian Zheng
- Department of Pathophysiology, College of Basic Medical Science, China Medical University, Shenyang, People's Republic of China
| | - Jian Gao
- Center of Laboratory Technology and Experimental Medicine, China Medical University, Shenyang, People's Republic of China
| | - Chenghai Zhao
- Department of Pathophysiology, College of Basic Medical Science, China Medical University, Shenyang, People's Republic of China.
| | - Wei Wang
- Department of Pathophysiology, College of Basic Medical Science, China Medical University, Shenyang, People's Republic of China.
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15
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Azbazdar Y, Karabicici M, Erdal E, Ozhan G. Regulation of Wnt Signaling Pathways at the Plasma Membrane and Their Misregulation in Cancer. Front Cell Dev Biol 2021; 9:631623. [PMID: 33585487 PMCID: PMC7873896 DOI: 10.3389/fcell.2021.631623] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Accepted: 01/04/2021] [Indexed: 12/24/2022] Open
Abstract
Wnt signaling is one of the key signaling pathways that govern numerous physiological activities such as growth, differentiation and migration during development and homeostasis. As pathway misregulation has been extensively linked to pathological processes including malignant tumors, a thorough understanding of pathway regulation is essential for development of effective therapeutic approaches. A prominent feature of cancer cells is that they significantly differ from healthy cells with respect to their plasma membrane composition and lipid organization. Here, we review the key role of membrane composition and lipid order in activation of Wnt signaling pathway by tightly regulating formation and interactions of the Wnt-receptor complex. We also discuss in detail how plasma membrane components, in particular the ligands, (co)receptors and extracellular or membrane-bound modulators, of Wnt pathways are affected in lung, colorectal, liver and breast cancers that have been associated with abnormal activation of Wnt signaling. Wnt-receptor complex components and their modulators are frequently misexpressed in these cancers and this appears to correlate with metastasis and cancer progression. Thus, composition and organization of the plasma membrane can be exploited to develop new anticancer drugs that are targeted in a highly specific manner to the Wnt-receptor complex, rendering a more effective therapeutic outcome possible.
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Affiliation(s)
- Yagmur Azbazdar
- Izmir Biomedicine and Genome Center, Dokuz Eylul University Health Campus, İzmir, Turkey.,Izmir International Biomedicine and Genome Institute (IBG-Izmir), Dokuz Eylul University, İzmir, Turkey
| | - Mustafa Karabicici
- Izmir Biomedicine and Genome Center, Dokuz Eylul University Health Campus, İzmir, Turkey.,Izmir International Biomedicine and Genome Institute (IBG-Izmir), Dokuz Eylul University, İzmir, Turkey
| | - Esra Erdal
- Izmir Biomedicine and Genome Center, Dokuz Eylul University Health Campus, İzmir, Turkey.,Department of Medical Biology and Genetics, Faculty of Medicine, Dokuz Eylul University, İzmir, Turkey
| | - Gunes Ozhan
- Izmir Biomedicine and Genome Center, Dokuz Eylul University Health Campus, İzmir, Turkey.,Izmir International Biomedicine and Genome Institute (IBG-Izmir), Dokuz Eylul University, İzmir, Turkey
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16
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Wang J, Feng D, Gao B. An Overview of Potential Therapeutic Agents Targeting WNT/PCP Signaling. Handb Exp Pharmacol 2021; 269:175-213. [PMID: 34463852 DOI: 10.1007/164_2021_533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Since the discovery of the proto-oncogene Wnt1 (Int1) in 1982, WNT signaling has been identified as one of the most important pathways that regulates a wide range of fundamental developmental and physiological processes in multicellular organisms. The canonical WNT signaling pathway depends on the stabilization and translocation of β-catenin and plays important roles in development and homeostasis. The WNT/planar cell polarity (WNT/PCP) signaling, also known as one of the β-catenin-independent WNT pathways, conveys directional information to coordinate polarized cell behaviors. Similar to WNT/β-catenin signaling, disruption or aberrant activation of WNT/PCP signaling also underlies a variety of developmental defects and cancers. However, the pharmacological targeting of WNT/PCP signaling for therapeutic purposes remains largely unexplored. In this review, we briefly discuss WNT/PCP signaling in development and disease and summarize the known drugs/inhibitors targeting this pathway.
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Affiliation(s)
- Jin Wang
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
| | - Di Feng
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
| | - Bo Gao
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong SAR, China.
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17
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Katanaev VL, Blagodatski A, Xu J, Khotimchenko Y, Koval A. Mining Natural Compounds to Target WNT Signaling: Land and Sea Tales. Handb Exp Pharmacol 2021; 269:215-248. [PMID: 34455487 DOI: 10.1007/164_2021_530] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
WNT signaling plays paramount roles in organism development, physiology, and disease, representing a highly attractive target for drug development. However, no WNT-modulating drugs have been approved, with several candidates trudging through the early clinical trials. This delay instigates alternative approaches to discover WNT-modulating drugs. Natural products were the source of therapeutics for centuries, but the chemical diversity they offer, especially when looking at different taxonomic groups and habitats, is still to a large extent unexplored. These considerations urge researchers to screen natural compounds for the WNT-modulatory activities. Since several reviews on such endeavors exist, we here have attempted to present these efforts as "Land and sea tales" (citing the book title by Rudyard Kipling) superimposing them onto the traditional pipeline of drug discovery and early development. In doing so, we illustrate each step of the pipeline with case studies stemming from our own research. It will become obvious that several steps of the pipeline need to be modified when applied to natural products rather than to synthetic libraries. Yet the main message of this chapter is that natural compounds represent a powerful source for the WNT signaling modulators and can be developed towards drug candidates against WNT-dependent maladies.
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Affiliation(s)
- Vladimir L Katanaev
- Department of Cell Physiology and Metabolism, Faculty of Medicine, Translational Research Centre in Oncohaematology, University of Geneva, Geneva, Switzerland.
- School of Biomedicine, Far Eastern Federal University, Vladivostok, Russia.
| | - Artem Blagodatski
- School of Biomedicine, Far Eastern Federal University, Vladivostok, Russia
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences Pushchino, Moscow, Russia
| | - Jiabin Xu
- Department of Cell Physiology and Metabolism, Faculty of Medicine, Translational Research Centre in Oncohaematology, University of Geneva, Geneva, Switzerland
| | - Yuri Khotimchenko
- School of Biomedicine, Far Eastern Federal University, Vladivostok, Russia
- National Scientific Center for Marine Biology, Far Eastern Branch of Russian Academy of Sciences, Vladivostok, Russia
| | - Alexey Koval
- Department of Cell Physiology and Metabolism, Faculty of Medicine, Translational Research Centre in Oncohaematology, University of Geneva, Geneva, Switzerland
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18
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Sun Y, Wang W, Zhao C. Frizzled Receptors in Tumors, Focusing on Signaling, Roles, Modulation Mechanisms, and Targeted Therapies. Oncol Res 2020; 28:661-674. [PMID: 32998794 PMCID: PMC7962935 DOI: 10.3727/096504020x16014648664459] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Wnt molecules play crucial roles in development and adult homeostasis through their receptors Frizzled proteins (Fzds). Fzds mediate canonical β-catenin pathway and various noncanonical β-catenin-independent pathways. Aberrant Fzd signaling is involved in many diseases including cancer. Wnt/β-catenin is a well-established oncogenic pathway involved in almost every aspect of tumor development. However, Fzd-mediated noncanonical Wnt pathways function as both tumor promoters and tumor suppressors depending on cellular context. Fzd-targeted therapies have proven to be effective on cultured tumor cells, tumor cell xenografts, mouse tumor models, and patient-derived xenografts (PDX). Moreover, Fzd-targeted therapies synergize with chemotherapy in preclinical models. However, the occurrence of fragility fractures in patients treated with Fzd-targeted agents such as OMP-54F28 and OMP-18R5 limits the development of this combination. Along with new insights on signaling, roles, and modulation mechanisms of Fzds in human tumors, more Fzd-related therapeutic targets will be developed.
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Affiliation(s)
- Yu Sun
- Department of Pathophysiology, College of Basic Medical Science, China Medical UniversityShenyangP.R. China
| | - Wei Wang
- Department of Pathophysiology, College of Basic Medical Science, China Medical UniversityShenyangP.R. China
| | - Chenghai Zhao
- Department of Pathophysiology, College of Basic Medical Science, China Medical UniversityShenyangP.R. China
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