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HOXA5: A crucial transcriptional factor in cancer and a potential therapeutic target. Biomed Pharmacother 2022; 155:113800. [DOI: 10.1016/j.biopha.2022.113800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 09/29/2022] [Accepted: 10/02/2022] [Indexed: 11/20/2022] Open
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Viñado AC, Calvo IA, Cenzano I, Olaverri D, Cocera M, San Martin-Uriz P, Romero JP, Vilas-Zornoza A, Vera L, Gomez-Cebrian N, Puchades-Carrasco L, Lisi-Vega LE, Apaolaza I, Valera P, Guruceaga E, Granero-Molto F, Ripalda-Cemborain P, Luck TJ, Bullinger L, Planes FJ, Rifon JJ, Méndez-Ferrer S, Yusuf RZ, Pardo-Saganta A, Prosper F, Saez B. The bone marrow niche regulates redox and energy balance in MLL::AF9 leukemia stem cells. Leukemia 2022; 36:1969-1979. [PMID: 35618797 PMCID: PMC7614282 DOI: 10.1038/s41375-022-01601-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Revised: 05/09/2022] [Accepted: 05/11/2022] [Indexed: 01/14/2023]
Abstract
Eradicating leukemia requires a deep understanding of the interaction between leukemic cells and their protective microenvironment. The CXCL12/CXCR4 axis has been postulated as a critical pathway dictating leukemia stem cell (LSC) chemoresistance in AML due to its role in controlling cellular egress from the marrow. Nevertheless, the cellular source of CXCL12 in the acute myeloid leukemia (AML) microenvironment and the mechanism by which CXCL12 exerts its protective role in vivo remain unresolved. Here, we show that CXCL12 produced by Prx1+ mesenchymal cells but not by mature osteolineage cells provide the necessary cues for the maintenance of LSCs in the marrow of an MLL::AF9-induced AML model. Prx1+ cells promote survival of LSCs by modulating energy metabolism and the REDOX balance in LSCs. Deletion of Cxcl12 leads to the accumulation of reactive oxygen species and DNA damage in LSCs, impairing their ability to perpetuate leukemia in transplantation experiments, a defect that can be attenuated by antioxidant therapy. Importantly, our data suggest that this phenomenon appears to be conserved in human patients. Hence, we have identified Prx1+ mesenchymal cells as an integral part of the complex niche-AML metabolic intertwining, pointing towards CXCL12/CXCR4 as a target to eradicate parenchymal LSCs in AML.
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Affiliation(s)
- Ana C Viñado
- Hematology-Oncology Program, CIMA Universidad de Navarra, Instituto de Investigación Sanitaria de Navarra (IdiSNA), 31008, Pamplona, Spain
- Centro de Investigación Biomédica en Red de Cáncer, CIBERONC, Madrid, Spain
| | - Isabel A Calvo
- Hematology-Oncology Program, CIMA Universidad de Navarra, Instituto de Investigación Sanitaria de Navarra (IdiSNA), 31008, Pamplona, Spain
- Centro de Investigación Biomédica en Red de Cáncer, CIBERONC, Madrid, Spain
| | - Itziar Cenzano
- Hematology-Oncology Program, CIMA Universidad de Navarra, Instituto de Investigación Sanitaria de Navarra (IdiSNA), 31008, Pamplona, Spain
| | - Danel Olaverri
- Tecnun Universidad de Navarra, School of Engineering, 20018, San Sebastian, Spain
| | - Miguel Cocera
- Hematology-Oncology Program, CIMA Universidad de Navarra, Instituto de Investigación Sanitaria de Navarra (IdiSNA), 31008, Pamplona, Spain
| | - Patxi San Martin-Uriz
- Hematology-Oncology Program, CIMA Universidad de Navarra, Instituto de Investigación Sanitaria de Navarra (IdiSNA), 31008, Pamplona, Spain
| | - Juan P Romero
- Hematology-Oncology Program, CIMA Universidad de Navarra, Instituto de Investigación Sanitaria de Navarra (IdiSNA), 31008, Pamplona, Spain
| | - Amaia Vilas-Zornoza
- Hematology-Oncology Program, CIMA Universidad de Navarra, Instituto de Investigación Sanitaria de Navarra (IdiSNA), 31008, Pamplona, Spain
| | - Laura Vera
- Regenerative Medicine Program, CIMA Universidad de Navarra, Instituto de Investigación Sanitaria de Navarra (IdiSNA), 31008, Pamplona, Spain
| | - Nuria Gomez-Cebrian
- Drug Discovery Unit, Instituto de Investigación Sanitaria La Fe, 46026, Valencia, Spain
| | | | - Livia E Lisi-Vega
- Wellcome-MRC Cambridge Stem Cell Institute, Department of Hematology, University of Cambridge, and NHS Blood and Transplant, Cambridge, CB2 0AW, UK
| | - Iñigo Apaolaza
- Tecnun Universidad de Navarra, School of Engineering, 20018, San Sebastian, Spain
- Universidad de Navarra, Centro de Ingeniería Biomédica and DATAI Instituto de Ciencia de los Datos e Inteligencia Artificial, 31008, Pamplona, Spain
| | - Pablo Valera
- Hematology-Oncology Program, CIMA Universidad de Navarra, Instituto de Investigación Sanitaria de Navarra (IdiSNA), 31008, Pamplona, Spain
| | - Elisabeth Guruceaga
- Hematology-Oncology Program, CIMA Universidad de Navarra, Instituto de Investigación Sanitaria de Navarra (IdiSNA), 31008, Pamplona, Spain
| | - Froilan Granero-Molto
- Regenerative Medicine Program, CIMA Universidad de Navarra, Instituto de Investigación Sanitaria de Navarra (IdiSNA), 31008, Pamplona, Spain
- Cell Therapy Area, Clínica Universidad de Navarra, 31008, Pamplona, Spain
- Department of Orthopaedic Surgery and Traumatology, Clínica Universidad de Navarra, 31008, Pamplona, Spain
| | - Purificacion Ripalda-Cemborain
- Regenerative Medicine Program, CIMA Universidad de Navarra, Instituto de Investigación Sanitaria de Navarra (IdiSNA), 31008, Pamplona, Spain
- Department of Orthopaedic Surgery and Traumatology, Clínica Universidad de Navarra, 31008, Pamplona, Spain
| | - Tamara J Luck
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Hematology, Oncology, and Cancer Immunology, Berlin, Germany
- German Cancer Consortium (DKTK) and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Lars Bullinger
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Hematology, Oncology, and Cancer Immunology, Berlin, Germany
- German Cancer Consortium (DKTK) and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Francisco J Planes
- Tecnun Universidad de Navarra, School of Engineering, 20018, San Sebastian, Spain
- Universidad de Navarra, Centro de Ingeniería Biomédica and DATAI Instituto de Ciencia de los Datos e Inteligencia Artificial, 31008, Pamplona, Spain
| | - José J Rifon
- Department of Hematology, Cell Therapy and Center of Cancer of the University of Navarra, Clínica Universidad de Navarra (CCUN), 31008, Pamplona, Spain
| | - Simón Méndez-Ferrer
- Wellcome-MRC Cambridge Stem Cell Institute, Department of Hematology, University of Cambridge, and NHS Blood and Transplant, Cambridge, CB2 0AW, UK
| | - Rushdia Z Yusuf
- Dana Farber Cancer Institute, 450 Brookline Ave, Boston, MA, 02215, USA
| | - Ana Pardo-Saganta
- Institute for Lung Health (ILH), Justus Liebig University Giessen, Giessen, 35392, Germany
- Universities of Giessen and Marburg Lung Center (UGMLC), Giessen, 35392, Germany
- German Center for Lung Research (DZL), Giessen, 35392, Germany
| | - Felipe Prosper
- Hematology-Oncology Program, CIMA Universidad de Navarra, Instituto de Investigación Sanitaria de Navarra (IdiSNA), 31008, Pamplona, Spain
- Centro de Investigación Biomédica en Red de Cáncer, CIBERONC, Madrid, Spain
- Department of Hematology, Cell Therapy and Center of Cancer of the University of Navarra, Clínica Universidad de Navarra (CCUN), 31008, Pamplona, Spain
| | - Borja Saez
- Hematology-Oncology Program, CIMA Universidad de Navarra, Instituto de Investigación Sanitaria de Navarra (IdiSNA), 31008, Pamplona, Spain.
- Centro de Investigación Biomédica en Red de Cáncer, CIBERONC, Madrid, Spain.
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Molecular implications of HOX genes targeting multiple signaling pathways in cancer. Cell Biol Toxicol 2021; 38:1-30. [PMID: 34617205 PMCID: PMC8789642 DOI: 10.1007/s10565-021-09657-2] [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] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Accepted: 09/10/2021] [Indexed: 11/17/2022]
Abstract
Homeobox (HOX) genes encode highly conserved homeotic transcription factors that play a crucial role in organogenesis and tissue homeostasis. Their deregulation impacts the function of several regulatory molecules contributing to tumor initiation and progression. A functional bridge exists between altered gene expression of individual HOX genes and tumorigenesis. This review focuses on how deregulation in the HOX-associated signaling pathways contributes to the metastatic progression in cancer. We discuss their functional significance, clinical implications and ascertain their role as a diagnostic and prognostic biomarker in the various cancer types. Besides, the mechanism of understanding the theoretical underpinning that affects HOX-mediated therapy resistance in cancers has been outlined. The knowledge gained shall pave the way for newer insights into the treatment of cancer.
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A forward genetic screen identifies modifiers of rocaglate responsiveness. Sci Rep 2021; 11:18516. [PMID: 34531456 PMCID: PMC8445955 DOI: 10.1038/s41598-021-97765-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Accepted: 08/27/2021] [Indexed: 12/13/2022] Open
Abstract
Rocaglates are a class of eukaryotic translation initiation inhibitors that are being explored as chemotherapeutic agents. They function by targeting eukaryotic initiation factor (eIF) 4A, an RNA helicase critical for recruitment of the 40S ribosome (and associated factors) to mRNA templates. Rocaglates perturb eIF4A activity by imparting a gain-of-function activity to eIF4A and mediating clamping to RNA. To appreciate how rocaglates could best be enabled in the clinic, an understanding of resistance mechanisms is important, as this could inform on strategies to bypass such events as well as identify responsive tumor types. Here, we report on the results of a positive selection, ORFeome screen aimed at identifying cDNAs capable of conferring resistance to rocaglates. Two of the most potent modifiers of rocaglate response identified were the transcription factors FOXP3 and NR1I3, both of which have been implicated in ABCB1 regulation-the gene encoding P-glycoprotein (Pgp). Pgp has previously been implicated in conferring resistance to silvestrol, a naturally occurring rocaglate, and we show here that this extends to additional synthetic rocaglate derivatives. In addition, FOXP3 and NR1I3 impart a multi-drug resistant phenotype that is reversed upon inhibition of Pgp, suggesting a potential therapeutic combination strategy.
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Yang Y, Zhong F, Huang X, Zhang N, Du J, Long Z, Zheng B, Lin W, Liu W, Ma W. High expression of HOXA5 is associated with poor prognosis in acute myeloid leukemia. Curr Probl Cancer 2020; 45:100673. [PMID: 33223227 DOI: 10.1016/j.currproblcancer.2020.100673] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 11/02/2020] [Accepted: 11/05/2020] [Indexed: 11/19/2022]
Abstract
BACKGROUND HOXA5 is considered as an oncogene in many tumors. This study in- vestigated the HOXA5 expression in Chinese acute myeloid leukemia (AML) patients and evaluated the predictive significance of HOXA5 with a single-center retrospective study. METHODS We investigated the expression pattern and prognostic value of HOXA5 in patients with AML through by using a series of databases and various datasets, including the ONCOMINE, TCGA, and STRING datasets. The bone marrow samples of 53 newly diagnosed AML patients (non-M3 subtype) and 19 benign individuals were collected in our center. HOXA5 mRNA expression levels were detected by real-time qPCR, HOXA5 protein expression levels were detected by Western Blot. Clinical data was obtained from inpatient medical records. RESULTS Two microarrays in Oncomine showed that the expression level of HOXA5 was significantly upregulated in AML. Our data revealed that AML patients had higher HOXA5 mRNA and protein expression levels than the controls (P < 0.001). The blast percentage in bone marrow of HOXA5 high-expression group was higher that of HOXA5 low-expression group (P < 0.05). Higher expression level of HOXA5 revealed a worse OS in AML (P < 0.05). CONCLUSION Our findings suggested that HOXA5 might have the potential ability to act as a diagnostic biomarker and potential therapeutic target for AML.
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Affiliation(s)
- You Yang
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China; Department of Pediatrics, Affiliated Hospital of Southwest Medical University, Sichuan Clinical Research Center for Birth Defects, Luzhou, Sichuan, China
| | - Fangfang Zhong
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China; Department of Pediatrics, Affiliated Hospital of Southwest Medical University, Sichuan Clinical Research Center for Birth Defects, Luzhou, Sichuan, China
| | - Xiaoming Huang
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Na Zhang
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Jingjing Du
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Ze Long
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Bowen Zheng
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Wanjun Lin
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Wenjun Liu
- Department of Pediatrics, Affiliated Hospital of Southwest Medical University, Sichuan Clinical Research Center for Birth Defects, Luzhou, Sichuan, China.
| | - Wenzhe Ma
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China.
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Lamba JK, Cao X, Raimondi S, Downing J, Ribeiro R, Gruber TA, Rubnitz J, Pounds S. DNA Methylation Clusters and Their Relation to Cytogenetic Features in Pediatric AML. Cancers (Basel) 2020; 12:cancers12103024. [PMID: 33080932 PMCID: PMC7603219 DOI: 10.3390/cancers12103024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2020] [Accepted: 10/15/2020] [Indexed: 12/13/2022] Open
Abstract
Acute Myeloid Leukemia (AML) is characterized by recurrent genetic and cytogenetic lesions that are utilized for risk stratification and for making treatment decisions. In recent years, methylation dysregulation has been extensively studied and associated with risk groups and prognosis in adult AML, however, such studies in pediatric AML are limited. Moreover, the mutations in epigenetic genes such as DNMT3A, IDH1 or IDH2 are almost absent or rare in pediatric patients as compared to their abundance in adult AML. In the current study, we evaluated methylation patterns that occur with or independent of the well-defined cytogenetic features in pediatric AML patients enrolled on multi-site AML02 clinical trial (NCT00136084). Our results demonstrate that unlike adult AML, cytosine DNA methylation does not result in significant unique clusters in pediatric AML, however, DNA methylation signatures correlated significantly with the most common and recurrent cytogenetic features. Paired evaluation of DNA methylation and expression identified genes and pathways of biological relevance that hold promise for novel therapeutic strategies. Our results further demonstrate that epigenetic signatures occur complimentary to the well-established chromosomal/mutational landscape, implying that dysregulation of oncogenes or tumor suppressors might be leveraging both genetic and epigenetic mechanisms to impact biological pathways critical for leukemogenesis.
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Affiliation(s)
- Jatinder K. Lamba
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Gainesville, FL 32608, USA
- Correspondence:
| | - Xueyuan Cao
- Department of Acute and Tertiary Care, University of Tennessee Health Science Center, Memphis, TN 38163, USA;
| | - Susana Raimondi
- Department of Pathology, St. Jude Children’s Research Hospital, Memphis, TN 38105, USA; (S.R.); (J.D.)
| | - James Downing
- Department of Pathology, St. Jude Children’s Research Hospital, Memphis, TN 38105, USA; (S.R.); (J.D.)
| | - Raul Ribeiro
- Department of Oncology, St. Jude Children’s Research Hospital, Memphis, TN 38105, USA; (R.R.); (J.R.)
| | - Tanja A. Gruber
- Department of Pediatrics, Stanford University School of Medicine, Stanford, CA 94305, USA;
| | - Jeffrey Rubnitz
- Department of Oncology, St. Jude Children’s Research Hospital, Memphis, TN 38105, USA; (R.R.); (J.R.)
| | - Stanley Pounds
- Department of Biostatistics, St. Jude Children’s Research Hospital, Memphis, TN 38105, USA;
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Bondos SE, Geraldo Mendes G, Jons A. Context-dependent HOX transcription factor function in health and disease. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2020; 174:225-262. [PMID: 32828467 DOI: 10.1016/bs.pmbts.2020.05.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
During animal development, HOX transcription factors determine the fate of developing tissues to generate diverse organs and appendages. The power of these proteins is striking: mis-expressing a HOX protein causes homeotic transformation of one body part into another. During development, HOX proteins interpret their cellular context through protein interactions, alternative splicing, and post-translational modifications to regulate cell proliferation, cell death, cell migration, cell differentiation, and angiogenesis. Although mutation and/or mis-expression of HOX proteins during development can be lethal, changes in HOX proteins that do not pattern vital organs can result in survivable malformations. In adults, mutation and/or mis-expression of HOX proteins disrupts their gene regulatory networks, deregulating cell behaviors and leading to arthritis and cancer. On the molecular level, HOX proteins are composed of DNA binding homeodomain, and large regions of unstructured, or intrinsically disordered, protein sequence. The primary roles of HOX proteins in arthritis and cancer suggest that mutations associated with these diseases in both the structured and disordered regions of HOX proteins can have substantial functional effects. These insights lead to new questions critical for understanding and manipulating HOX function in physiological and pathological conditions.
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Affiliation(s)
- Sarah E Bondos
- Department of Molecular and Cellular Medicine, Texas A&M University, College Station, TX, United States.
| | - Gabriela Geraldo Mendes
- Department of Molecular and Cellular Medicine, Texas A&M University, College Station, TX, United States
| | - Amanda Jons
- Department of Molecular and Cellular Medicine, Texas A&M University, College Station, TX, United States
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The Role of the HOXA Gene Family in Acute Myeloid Leukemia. Genes (Basel) 2019; 10:genes10080621. [PMID: 31426381 PMCID: PMC6723066 DOI: 10.3390/genes10080621] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 08/06/2019] [Accepted: 08/14/2019] [Indexed: 01/12/2023] Open
Abstract
The HOXA gene family is associated with various cancer types. However, the role of HOXA genes in acute myeloid leukemia (AML) have not been comprehensively studied. We compared the transcriptional expression, survival data, and network analysis of HOXA-associated signaling pathways in patients with AML using the ONCOMINE, GEPIA, LinkedOmics, cBioPortal, and Metascape databases. We observed that HOXA2-10 mRNA expression levels were significantly upregulated in AML and that high HOXA1-10 expression was associated with poor AML patient prognosis. The HOXA genes were altered in ~18% of the AML samples, either in terms of amplification, deep deletion, or elevated mRNA expression. The following pathways were modulated by HOXA gene upregulation: GO:0048706: embryonic skeletal system development; R-HSA-5617472: activation of HOX genes in anterior hindbrain development during early embryogenesis; GO:0060216: definitive hemopoiesis; hsa05202: transcriptional mis-regulation in cancer; and GO:0045638: negative regulation of myeloid cell differentiation, and they were significantly regulated due to alterations affecting the HOXA genes. This study identified HOXA3-10 genes as potential AML therapeutic targets and prognostic markers.
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Saijo S, Kuwano Y, Tange S, Rokutan K, Nishida K. A novel long non-coding RNA from the HOXA6-HOXA5 locus facilitates colon cancer cell growth. BMC Cancer 2019; 19:532. [PMID: 31159758 PMCID: PMC6547586 DOI: 10.1186/s12885-019-5715-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2019] [Accepted: 05/14/2019] [Indexed: 12/12/2022] Open
Abstract
Background Homeobox A5 (HOXA5), a member of the HOX family, plays an important role in tumor development and morphogenesis, although opposite effects on tumorigenesis have been observed, depending on the tissue type. In this study, we aimed to investigate the role of a novel transcript from the HOXA6-HOXA5 locus in colon cancer tumorigenesis. Methods Human colon cancer cell lines were analyzed using next generation sequencing-based targeted mRNA capture. The effects of overexpression and silencing of HOXA5 transcripts were evaluated in vitro and using a xenograft nude mouse model. Results We identified three novel transcripts (HOXA5 short, long 1, and long 2) transcribed from the HOXA6-HOXA5 locus in HCT116 colon cancer cells using next generation sequencing-based targeted mRNA capture. Knockdown of HOXA5 long 1 and long 2 transcripts did not affect cell growth, while selective silencing of HOXA5 short RNA inhibited cell growth independent of HOXA5 expression. Stable overexpression of HOXA5 short RNA promoted proliferation and migration of colon cancer cell lines HCT116, DLD1, and HT-29 and accelerated tumor growth in the xenograft mouse model. In vitro translation assays suggested HOXA5 short RNA was a functional long non-coding RNA (lncRNA). Consistent with these observations, expression of HOXA5 short RNA was upregulated in advanced colon cancer tissues. Ingenuity Pathway Analysis of differentially expressed genes between HOXA5 short RNA overexpressed and silenced HCT116 cells revealed that HOXA5 short RNA preferentially modified expression of epidermal growth factor (EGF) signal-related genes. Western blot analysis demonstrated that stable overexpression of HOXA5 short RNA increased EGF receptor levels and facilitated its phosphorylation in both HCT116 cells and xenograft tumors. Conclusions Our results suggested that HOXA5 short RNA, a novel lncRNA, may play a crucial role in colon tumor growth through activation of EGF signaling. Electronic supplementary material The online version of this article (10.1186/s12885-019-5715-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Saki Saijo
- Department of Pathophysiology, Institute of Biomedical Sciences, Tokushima University Graduate School, 3-18-15 Kuramoto-cho, Tokushima, 770-8503, Japan
| | - Yuki Kuwano
- Department of Pathophysiology, Institute of Biomedical Sciences, Tokushima University Graduate School, 3-18-15 Kuramoto-cho, Tokushima, 770-8503, Japan
| | - Shoichiro Tange
- Department of Human Genetics, Institute of Biomedical Sciences, Tokushima University Graduate School, 3-18-15 Kuramoto-cho, Tokushima, 770-8503, Japan
| | - Kazuhito Rokutan
- Department of Pathophysiology, Institute of Biomedical Sciences, Tokushima University Graduate School, 3-18-15 Kuramoto-cho, Tokushima, 770-8503, Japan
| | - Kensei Nishida
- Department of Pathophysiology, Institute of Biomedical Sciences, Tokushima University Graduate School, 3-18-15 Kuramoto-cho, Tokushima, 770-8503, Japan.
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Wang SL, Huang Y, Su R, Yu YY. Silencing long non-coding RNA HOTAIR exerts anti-oncogenic effect on human acute myeloid leukemia via demethylation of HOXA5 by inhibiting Dnmt3b. Cancer Cell Int 2019; 19:114. [PMID: 31168296 PMCID: PMC6489230 DOI: 10.1186/s12935-019-0808-z] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2018] [Accepted: 03/28/2019] [Indexed: 11/10/2022] Open
Abstract
Background As an aggressive hematological malignancy, acute myeloid leukemia (AML) remains a dismal disease with poor prognosis. Long non-coding RNAs (lncRNAs) have been widely reported to be involved in tumorigenesis of AML. Here, we define an important role of lncRNA HOTAIR in AML in relation to HOXA5 methylation. Methods Firstly, the expression of HOTAIR was examined in AML samples and cells collected. Next, gain- or loss-of function experiments were conducted in AML cells to explore the effect of HOTAIR on AML. Then, relationship among HOXA5 promoter methylation, HOTAIR and Dnmt3b was measured. Expression of HOXA5 and cell proliferation/apoptosis-related genes was also detected. A last, in vivo assay was performed to assess the tumor formation in nude mice in order to explore the roles of HOTAIR and HOXA5 in cell apoptosis and proliferation. Results LncRNA HOTAIR was found to be upregulated in AML cells and tissues. With silencing of HOTAIR and overexpression of HOXA5, AML cell proliferation was decreased while the apoptosis was induced. Furthermore, HOTAIR was observed to recruit Dnmt3b and to increase HOXA5 promoter methylation. Moreover, silencing HOTAIR and upregulating HOXA5 were found to induce apoptosis and reduce proliferation of AML cells in vivo. Conclusion Our findings highlight the anti-tumor ability of HOTAIR silencing in AML, suggesting that silencing HOTAIR was able to inhibit AML progression through HOXA5 promoter demethylation by decreasing Dnmt3b. Electronic supplementary material The online version of this article (10.1186/s12935-019-0808-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Si-Li Wang
- 1Department of Hematology, The First Affiliated Hospital of Xiamen University, No. 55, Zhenhai Road, Xiamen, 361003 Fujian People's Republic of China.,2Department of Clinical Medicines, Fujian Medical University, No. 1, Xuefu North Road, Fuzhou, 350108 Fujian People's Republic of China
| | - Yun Huang
- 1Department of Hematology, The First Affiliated Hospital of Xiamen University, No. 55, Zhenhai Road, Xiamen, 361003 Fujian People's Republic of China
| | - Rui Su
- 1Department of Hematology, The First Affiliated Hospital of Xiamen University, No. 55, Zhenhai Road, Xiamen, 361003 Fujian People's Republic of China
| | - Yong-Yang Yu
- 3Department of General Surgery, The First Affiliated Hospital of Xiamen University, Xiamen, 361003 People's Republic of China
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Primon M, Hunter KD, Pandha HS, Morgan R. Kinase Regulation of HOX Transcription Factors. Cancers (Basel) 2019; 11:cancers11040508. [PMID: 30974835 PMCID: PMC6521248 DOI: 10.3390/cancers11040508] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 04/02/2019] [Accepted: 04/07/2019] [Indexed: 01/03/2023] Open
Abstract
The HOX genes are a group of homeodomain-containing transcription factors that play important regulatory roles in early development, including the establishment of cell and tissue identity. HOX expression is generally reduced in adult cells but is frequently re-established as an early event in tumour formation and supports an oncogenic phenotype. HOX transcription factors are also involved in cell cycle regulation and DNA repair, along with normal adult physiological process including stem cell renewal. There have been extensive studies on the mechanism by which HOX proteins regulate transcription, with particular emphasis on their interaction with cofactors such as Pre-B-cell Leukaemia Homeobox (PBX) and Myeloid Ecotropic Viral Integration Site 1 (MEIS). However, significantly less is known of how the activity of HOX proteins is regulated. There is growing evidence that phosphorylation may play an important role in this context, and in this review, we draw together a number of important studies published over the last 20 years, and discuss the relevance of phosphorylation in the regulation and function of HOX proteins in development, evolution, cell cycle regulation, and cancer.
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Affiliation(s)
- Monika Primon
- Institute of Cancer Therapeutics, Faculty of Life Sciences, University of Bradford, Bradford BD7 1DP, UK.
| | - Keith D Hunter
- Unit of Oral and Maxillofacial Pathology, School of Clinical Dentistry, University of Sheffield, Sheffield S10 2TN, UK.
| | - Hardev S Pandha
- Faculty of Health and Medical Sciences, University of Surrey, Guildford GU2 7XH, UK.
| | - Richard Morgan
- Institute of Cancer Therapeutics, Faculty of Life Sciences, University of Bradford, Bradford BD7 1DP, UK.
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12
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Wu Y, Zhou T, Tang Q, Xiao J. HOXA5 inhibits tumor growth of gastric cancer under the regulation of microRNA-196a. Gene 2018; 681:62-68. [PMID: 30267809 DOI: 10.1016/j.gene.2018.09.051] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 09/19/2018] [Accepted: 09/25/2018] [Indexed: 12/28/2022]
Abstract
Homeobox A5 (HOXA5) is a member of the HOX protein family which were implicated in serval critical process and was cancer-specific dysregulated in human cancers. However, its expression and function in human gastric cancer (GC) was still largely unknown. In this study, we confirmed for the first time that HOXA5 mRNA and protein was down-regulated in GC tissues and cell lines. Clinical data showed that low HOXA5 was significantly associated poor prognostic features, including large tumor size and advanced TNM stage. For 5-year survival, HOXA5 served as a potential prognostic marker of GC patients. Notably, HOXA5 inhibited cell viability, colony formation, proliferation, cell cycle progression and promoted apoptosis in vitro and in vivo. Furthermore, we demonstrated that HOXA5 expression was regulated by miR-196a. In GC tissues, miR-196a has an inverse correlation with HOXA5 expression. Conclusively, our results demonstrated that HOXA5 functions as a tumor suppressor in regulating tumor growth of GC under regulation of miR-196a, supporting its potential utility as a therapeutic target for GC.
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Affiliation(s)
- Yingxin Wu
- Department of Gastrointestinal surgery, The First Affiliated Hospital of Chengdu Medical College, Chengdu, Sichuan 610500, China
| | - Tong Zhou
- Department of Gastrointestinal surgery, The Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan 637000, China
| | - Qian Tang
- Department of Emergency, The Third People's Hospital of Chengdu, Chengdu, Sichuan 610000, China
| | - Jiangwei Xiao
- Department of Gastrointestinal surgery, The First Affiliated Hospital of Chengdu Medical College, Chengdu, Sichuan 610500, China.
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13
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Shi Q, Shen L, Dong B, Fu H, Kang X, Dai L, Yang Y, Yan W, Chen K. Downregulation of HOXA13 sensitizes human esophageal squamous cell carcinoma to chemotherapy. Thorac Cancer 2018; 9:836-846. [PMID: 29757528 PMCID: PMC6026615 DOI: 10.1111/1759-7714.12758] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 04/02/2018] [Accepted: 04/06/2018] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Chemoresistance often develops in esophageal squamous cell carcinoma (ESCC), leading to poor prognosis. HOX genes play a crucial role in embryonic development and cell differentiation. Studies have recently linked HOX with chemoresistance, thus we explored whether HOXA13 is involved in ESCC chemoresistance. METHODS One hundred thirty-one ESCC patients who received neoadjuvant chemotherapy were enrolled. HOXA13 expression was examined by immunohistochemistry. RNA interference was used to knock down the HOXA13 expression in KYSE70 and transfected HOXA13 plasmid to overexpress HOXA13 in KYSE510 cells. We examined half-maximal inhibitory concentration of cisplatin, apoptosis, and epithelial-to-mesenchymal transition (EMT) in ESCC cell lines with different HOXA13 expression levels by cell counting kit-8, flow cytometry, and transwell analysis. RESULTS The median survival of patients with high HOXA13 expression was significantly shorter than those with low expression (P = 0.027). HOXA13 was associated with worse tumor regression grade (P = 0.009). Low HOXA13 expressed cells decreased the half-maximal inhibitory concentration of cisplatin (P < 0.05), increased cisplatin-induced apoptosis (P < 0.05), and decreased EMT (P < 0.05) compared with high HOXA13 expressed cells. In low HOXA13 expressed cells, cleaved caspase-3 and cleaved PARP expression induced by cisplatin increased, while expression of E-cadherin and Snail protein, markers of EMT, was upregulated and downregulated, respectively. EMT decreased in low HOXA13 expressed cells. CONCLUSION High HOXA13 expression was associated with inferior tumor regression grade and poor overall survival in ESCC patients treated with neoadjuvant chemotherapy. HOXA13 increased cisplatin-resistance and promoted EMT in ESCC cells.
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Affiliation(s)
- Qi Shi
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Thoracic Surgery IPeking University Cancer Hospital & InstituteBeijingChina
| | - Luyan Shen
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Thoracic Surgery IPeking University Cancer Hospital & InstituteBeijingChina
| | - Bin Dong
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of PathologyPeking University Cancer Hospital & InstituteBeijingChina
| | - Hao Fu
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Thoracic Surgery IPeking University Cancer Hospital & InstituteBeijingChina
| | - Xiaozheng Kang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Thoracic Surgery IPeking University Cancer Hospital & InstituteBeijingChina
| | - Liang Dai
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Thoracic Surgery IPeking University Cancer Hospital & InstituteBeijingChina
| | - Yongbo Yang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Thoracic Surgery IPeking University Cancer Hospital & InstituteBeijingChina
| | - Wanpu Yan
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Thoracic Surgery IPeking University Cancer Hospital & InstituteBeijingChina
| | - Ke‐Neng Chen
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Thoracic Surgery IPeking University Cancer Hospital & InstituteBeijingChina
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14
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Morgan R, El-Tanani M, Hunter KD, Harrington KJ, Pandha HS. Targeting HOX/PBX dimers in cancer. Oncotarget 2018; 8:32322-32331. [PMID: 28423659 PMCID: PMC5458287 DOI: 10.18632/oncotarget.15971] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Accepted: 02/23/2017] [Indexed: 12/30/2022] Open
Abstract
The HOX and PBX gene families encode transcription factors that have key roles in establishing the identity of cells and tissues in early development. Over the last 20 years it has become apparent that they are also dysregulated in a wide range of solid and haematological malignancies and have a predominantly pro-oncogenic function. A key mode of transcriptional regulation by HOX and PBX proteins is through their interaction as a heterodimer or larger complex that enhances their binding affinity and specificity for DNA, and there is growing evidence that this interaction is a potential therapeutic target in malignancies that include prostate, breast, renal, ovarian and lung cancer, melanoma, myeloma, and acute myeloid leukaemia. This review summarizes the roles of HOX and PBX genes in cancer and assesses the therapeutic potential of HOX/PBX dimer inhibition, including the availability of biomarkers for its application in precision medicine.
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Affiliation(s)
- Richard Morgan
- Institute of Cancer Therapeutics, Faculty of Life Sciences, University of Bradford, UK
| | - Mohamed El-Tanani
- Institute of Cancer Therapeutics, Faculty of Life Sciences, University of Bradford, UK
| | - Keith D Hunter
- Unit of Oral and Maxillofacial Pathology, School of Clinical Dentistry, University of Sheffield, Sheffield, UK
| | - Kevin J Harrington
- Targeted Therapy Team, Chester Beatty Laboratories, The Institute of Cancer Research, London, UK
| | - Hardev S Pandha
- Faculty of Health and Medical Sciences, University of Surrey, Guildford, UK
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15
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Sun Y, Zeng C, Gan S, Li H, Cheng Y, Chen D, Li R, Zhu W. LncRNA HOTTIP-Mediated HOXA11 Expression Promotes Cell Growth, Migration and Inhibits Cell Apoptosis in Breast Cancer. Int J Mol Sci 2018; 19:ijms19020472. [PMID: 29415429 PMCID: PMC5855694 DOI: 10.3390/ijms19020472] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Revised: 01/29/2018] [Accepted: 02/02/2018] [Indexed: 12/16/2022] Open
Abstract
As the most common cause of cancer death in women, the pathogenesis of breast cancer still remains unclear. Here, we reported a long non-coding RNA (lncRNA), HOTTIP (HOXA transcript at the distal tip), that may play an important role in the pathogenesis of breast cancer. Using gain-and-loss-of experiments in vitro and in vivo, we observed the marked upregulation of HOTTIP/HOXA11 in the breast cancer cell line, MCF-7, and the downregulation of HOTTIP or HOXA11, which might inhibit cell proliferation and migration but promote cell apoptosis in breast cancer MCF-7 cells. In addition, by further rescue experiments with HOXA11 overexpression, we uncovered a novel potential regulatory mechanism between HOTTIP and one of its physical HOXA clusters, HOXA11. Hence, HOTTIP may mediate, at least partly, HOXA11 expression involved in cell growth, migration, and apoptosis of breast cancer MCF-7 cells.
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Affiliation(s)
- Yanqin Sun
- Department of Pathology, Guangdong Medical University, Dongguan 523808, China.
| | - Chao Zeng
- Department of Pathology, Guangdong Medical University, Dongguan 523808, China.
| | - Siyuan Gan
- Department of Pathology, Guangdong Medical University, Dongguan 523808, China.
| | - Hongmei Li
- Department of Pathology, Guangdong Medical University, Dongguan 523808, China.
| | - Ying Cheng
- Department of Pathology, Guangdong Medical University, Dongguan 523808, China.
| | - Dongjie Chen
- Department of Radiotherapy, State Key Laboratory of Oncology in South China, Cancer Center, Sun Yat-Sen University, Guangzhou 510060, China.
| | - Rujia Li
- Department of Pathology, Guangdong Medical University, Dongguan 523808, China.
| | - Wei Zhu
- Department of Pathology, Guangdong Medical University, Dongguan 523808, China.
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16
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Gao F, Liu W, Guo Q, Bai Y, Yang H, Chen H. Physcion blocks cell cycle and induces apoptosis in human B cell precursor acute lymphoblastic leukemia cells by downregulating HOXA5. Biomed Pharmacother 2017; 94:850-857. [PMID: 28810515 DOI: 10.1016/j.biopha.2017.07.149] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 07/17/2017] [Accepted: 07/30/2017] [Indexed: 01/01/2023] Open
Abstract
Acute lymphoblastic leukemia (ALL) presents the most common type of malignancy in children and ranks the third most common cancer in adults. This study is aimed to investigate the anti-leukemia activity of physcion in ALL. Our results have showed that physcion could significantly suppress cell growth, induce apoptosis and blocked cell cycle progression in vitro. Mechanistically, we found that physcion downregulated the expression of HOXA5, which is responsible for the anti-leukemia activity of physcion. To verify this finding, siRNA targeting HOXA5 and overexpressing plasmid were used to repress HOXA5 expression and introduce ectopic overexpression of HOXA5 in ALL cell lines, respectively. Our results showed that overexpression of HOXA5 significantly abrogated the inducing effect of physcion on apoptosis and cell cycle blockasde. In contrast, knockdown of HOXA5 by siRNA enhanced the anti-tumor effect of physcion on ALL cell lines. Our results provided experimental base for the use of physcion in the treatment of ALL.
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Affiliation(s)
- Fei Gao
- Department of Pediatrics, Affliated Hospital of Southwest Medical University, Luzhou 646000, Sichuan, China
| | - Wenjun Liu
- Department of Pediatrics, Affliated Hospital of Southwest Medical University, Luzhou 646000, Sichuan, China.
| | - Qulian Guo
- Department of Pediatrics, Affliated Hospital of Southwest Medical University, Luzhou 646000, Sichuan, China
| | - Yongqi Bai
- Department of Pediatrics, Affliated Hospital of Southwest Medical University, Luzhou 646000, Sichuan, China
| | - Hong Yang
- Department of Pediatrics, Affliated Hospital of Southwest Medical University, Luzhou 646000, Sichuan, China
| | - Hongying Chen
- Department of Pediatrics, Affliated Hospital of Southwest Medical University, Luzhou 646000, Sichuan, China
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17
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Shen LY, Fan MY, Dong B, Yan WP, Chen KN. Increased HOXC6 expression predicts chemotherapy sensitivity in patients with esophageal squamous cell carcinoma. Oncol Lett 2017; 14:4835-4840. [PMID: 29085488 DOI: 10.3892/ol.2017.6772] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Accepted: 03/10/2017] [Indexed: 12/21/2022] Open
Abstract
Increased expression of homeobox C6 (HOXC6) predicts poor prognosis of patients with esophageal squamous cell carcinoma (ESCC) and promotes ESCC cell proliferation. Additionally, the expression of HOXC6 was upregulated in chemosensitive ESCC cell lines. Therefore, it was hypothesized that HOXC6 may be associated with chemosensitivity of ESCC. Patients with ESCC who underwent neoadjuvant chemotherapy followed by surgery by a single-surgeon team between January 2000 and December 2012 were enrolled in the present study. Pretreatment biopsy specimens and postoperative resection samples were collected. Immunohistochemistry was performed to examine HOXC6 expression, and the association between HOXC6 expression and tumor regression grade (TRG) was analyzed. In cell lines exhibiting stable knockdown of HOXC6, Cell Counting Kit-8 assays were used to evaluate the chemosensitivity of cells to various concentrations of cisplatin and paclitaxel. A total of 51 pretreatment biopsy specimens were assessed, and patients with increased expression of HOXC6 in pretreatment biopsy specimens exhibited higher TRGs. A total of 186 surgical samples were evaluated; HOXC6 was expressed at a decreased level in patients with higher TRG and at a high level in patients with lower TRG. In addition, downregulation of HOXC6 decreased the sensitivity of ESCC cell lines to cisplatin and paclitaxel, resulting in an increased half-maximal inhibitory concentration. Increased expression of HOXC6 prior to treatment was associated with chemosensitivity in ESCC tissues.
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Affiliation(s)
- Lu-Yan Shen
- Department of Thoracic Surgery I, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, Beijing 100142, P.R. China
| | - Meng-Ying Fan
- Department of Thoracic Surgery I, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, Beijing 100142, P.R. China
| | - Bin Dong
- Department of Pathology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, Beijing 100142, P.R. China
| | - Wan-Pu Yan
- Department of Thoracic Surgery I, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, Beijing 100142, P.R. China
| | - Ke-Neng Chen
- Department of Thoracic Surgery I, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, Beijing 100142, P.R. China
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18
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Cañete A, Cano E, Muñoz-Chápuli R, Carmona R. Role of Vitamin A/Retinoic Acid in Regulation of Embryonic and Adult Hematopoiesis. Nutrients 2017; 9:E159. [PMID: 28230720 PMCID: PMC5331590 DOI: 10.3390/nu9020159] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2016] [Revised: 02/05/2017] [Accepted: 02/16/2017] [Indexed: 12/11/2022] Open
Abstract
Vitamin A is an essential micronutrient throughout life. Its physiologically active metabolite retinoic acid (RA), acting through nuclear retinoic acid receptors (RARs), is a potent regulator of patterning during embryonic development, as well as being necessary for adult tissue homeostasis. Vitamin A deficiency during pregnancy increases risk of maternal night blindness and anemia and may be a cause of congenital malformations. Childhood Vitamin A deficiency can cause xerophthalmia, lower resistance to infection and increased risk of mortality. RA signaling appears to be essential for expression of genes involved in developmental hematopoiesis, regulating the endothelial/blood cells balance in the yolk sac, promoting the hemogenic program in the aorta-gonad-mesonephros area and stimulating eryrthropoiesis in fetal liver by activating the expression of erythropoietin. In adults, RA signaling regulates differentiation of granulocytes and enhances erythropoiesis. Vitamin A may facilitate iron absorption and metabolism to prevent anemia and plays a key role in mucosal immune responses, modulating the function of regulatory T cells. Furthermore, defective RA/RARα signaling is involved in the pathogenesis of acute promyelocytic leukemia due to a failure in differentiation of promyelocytes. This review focuses on the different roles played by vitamin A/RA signaling in physiological and pathological mouse hematopoiesis duddurring both, embryonic and adult life, and the consequences of vitamin A deficiency for the blood system.
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Affiliation(s)
- Ana Cañete
- Department of Animal Biology, Faculty of Science, University of Malaga, Campus de Teatinos s/n Malaga 29071, Spain and Andalusian Center for Nanomedicine and Biotechnology (BIONAND), Severo Ochoa 25, Campanillas 29590, Spain.
| | - Elena Cano
- Max-Delbruck Center for Molecular Medicine, Robert Roessle-Strasse 10, 13125 Berlin, Germany.
| | - Ramón Muñoz-Chápuli
- Department of Animal Biology, Faculty of Science, University of Malaga, Campus de Teatinos s/n Malaga 29071, Spain and Andalusian Center for Nanomedicine and Biotechnology (BIONAND), Severo Ochoa 25, Campanillas 29590, Spain.
| | - Rita Carmona
- Department of Animal Biology, Faculty of Science, University of Malaga, Campus de Teatinos s/n Malaga 29071, Spain and Andalusian Center for Nanomedicine and Biotechnology (BIONAND), Severo Ochoa 25, Campanillas 29590, Spain.
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19
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Wang H, Jia XH, Chen JR, Yi YJ, Wang JY, Li YJ, Xie SY. HOXB4 knockdown reverses multidrug resistance of human myelogenous leukemia K562/ADM cells by downregulating P-gp, MRP1 and BCRP expression via PI3K/Akt signaling pathway. Int J Oncol 2016; 49:2529-2537. [PMID: 27779650 DOI: 10.3892/ijo.2016.3738] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2016] [Accepted: 10/14/2016] [Indexed: 11/06/2022] Open
Abstract
Multidrug resistance (MDR) plays a pivotal role in human chronic myelogenous leukemia (CML) chemotherapy failure. MDR is mainly associated with the overexpression of drug efflux transporters of the ATP-binding cassette (ABC) proteins. Phosphoinositide 3-kinase (PI3K)/Akt signaling cascade is involved in the MDR phenotype and is correlated with multidrug resistance 1 (MDR1)/P-glycoprotein (P-gp), multidrug resistance-associated protein 1 (MRP1) and breast cancer resistance protein (BCRP) expression in many human malignancies. Homeobox (HOX) B4, a member of the HOX gene family, has been reported to be correlated with occurrence, development, poor prognosis and drug resistance of human leukemia. In the present study, HOXB4 expression was analyzed in K562 cell line and its MDR subline K562/ADM. Compared with K562 cells, drug-resistant K562/ADM cells demonstrated evidently higher HOXB4 expression. In addition, we firstly investigated the reversal effect of HOXB4 deletion on K562/ADM cells and the underlying mechanism. The Cell Counting kit-8 (CCK-8) and flow cytometry assays showed that knockdown of HOXB4 enhanced chemosensitivity and decreased drug efflux in K562/ADM cells. Moreover, HOXB4 knockout led to downregulation of P-gp, MRP1 and BCRP expression and PI3K/Akt signaling activity, suggesting that repression of HOXB4 might be a key point to reverse MDR of K562/ADM cells.
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Affiliation(s)
- Hong Wang
- Department of Pediatrics, The Affiliated Hospital of Binzhou Medical University, Binzhou, Shandong 256603, P.R. China
| | - Xiu-Hong Jia
- Department of Pediatrics, The Affiliated Hospital of Binzhou Medical University, Binzhou, Shandong 256603, P.R. China
| | - Jie-Ru Chen
- Department of Pediatrics, The Affiliated Hospital of Binzhou Medical University, Binzhou, Shandong 256603, P.R. China
| | - Ying-Jie Yi
- Department of Pediatrics, The Affiliated Hospital of Binzhou Medical University, Binzhou, Shandong 256603, P.R. China
| | - Jian-Yong Wang
- Department of Pediatrics, The Affiliated Hospital of Binzhou Medical University, Binzhou, Shandong 256603, P.R. China
| | - You-Jie Li
- Department of Biochemistry and Molecular Biology, Key Laboratory of Tumour Molecular Biology, Binzhou Medical University, Yantai, Shandong 264003, P.R. China
| | - Shu-Yang Xie
- Department of Biochemistry and Molecular Biology, Key Laboratory of Tumour Molecular Biology, Binzhou Medical University, Yantai, Shandong 264003, P.R. China
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