1
|
Yadav C, Yadav R, Nanda S, Ranga S, Ahuja P, Tanwar M. Role of HOX genes in cancer progression and their therapeutical aspects. Gene 2024; 919:148501. [PMID: 38670395 DOI: 10.1016/j.gene.2024.148501] [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: 01/19/2024] [Revised: 03/28/2024] [Accepted: 04/22/2024] [Indexed: 04/28/2024]
Abstract
HOX genes constitute a family of evolutionarily conserved transcription factors that play pivotal roles in embryonic development, tissue patterning, and cell differentiation. These genes are essential for the precise spatial and temporal control of body axis formation in vertebrates. In addition to their developmental functions, HOX genes have garnered significant attention for their involvement in various diseases, including cancer. Deregulation of HOX gene expression has been observed in numerous malignancies, where they can influence tumorigenesis, progression, and therapeutic responses. This review provides an overview of the diverse roles of HOX genes in development, disease, and potential therapeutic targets, highlighting their significance in understanding biological processes and their potential clinical implications.
Collapse
Affiliation(s)
- Chetna Yadav
- Department of Genetics, Maharshi Dayanand University, Rohtak, Haryana 124001, India
| | - Ritu Yadav
- Department of Genetics, Maharshi Dayanand University, Rohtak, Haryana 124001, India.
| | - Smiti Nanda
- Retd. Senior Professor and Head, Department of Gynaecology and Obstetrics, Pt. B.D. Sharma University of Health Sciences, Rohtak 124001, India
| | - Shalu Ranga
- Department of Genetics, Maharshi Dayanand University, Rohtak, Haryana 124001, India
| | - Parul Ahuja
- Department of Genetics, Maharshi Dayanand University, Rohtak, Haryana 124001, India
| | - Mukesh Tanwar
- Department of Genetics, Maharshi Dayanand University, Rohtak, Haryana 124001, India
| |
Collapse
|
2
|
Liu Y, Li Q, Song L, Gong C, Tang S, Budinich KA, Vanderbeck A, Mathias KM, Wertheim GB, Nguyen SC, Outen R, Joyce EF, Maillard I, Wan L. Condensate-Promoting ENL Mutation Drives Tumorigenesis In Vivo Through Dynamic Regulation of Histone Modifications and Gene Expression. Cancer Discov 2024; 14:1522-1546. [PMID: 38655899 PMCID: PMC11294821 DOI: 10.1158/2159-8290.cd-23-0876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 02/21/2024] [Accepted: 04/22/2024] [Indexed: 04/26/2024]
Abstract
Gain-of-function mutations in the histone acetylation "reader" eleven-nineteen-leukemia (ENL), found in acute myeloid leukemia (AML) and Wilms tumor, are known to drive condensate formation and gene activation in cellular systems. However, their role in tumorigenesis remains unclear. Using a conditional knock-in mouse model, we show that mutant ENL perturbs normal hematopoiesis, induces aberrant expansion of myeloid progenitors, and triggers rapid onset of aggressive AML. Mutant ENL alters developmental and inflammatory gene programs in part by remodeling histone modifications. Mutant ENL forms condensates in hematopoietic stem/progenitor cells at key leukemogenic genes, and disrupting condensate formation via mutagenesis impairs its chromatin and oncogenic function. Moreover, treatment with an acetyl-binding inhibitor of the mutant ENL displaces these condensates from target loci, inhibits mutant ENL-induced chromatin changes, and delays AML initiation and progression in vivo. Our study elucidates the function of ENL mutations in chromatin regulation and tumorigenesis and demonstrates the potential of targeting pathogenic condensates in cancer treatment. Significance: A direct link between ENL mutations, condensate formation, and tumorigenesis is lacking. This study elucidates the function and mechanism of ENL mutations in leukemogenesis, establishing these mutations as bona fide oncogenic drivers. Our results also support the role of condensate dysregulation in cancer and reveal strategies to target pathogenic condensates.
Collapse
Affiliation(s)
- Yiman Liu
- Department of Cancer Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
- Abramson Family Cancer Research Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
| | - Qinglan Li
- Department of Cancer Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
- Abramson Family Cancer Research Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
| | - Lele Song
- Department of Cancer Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
- Abramson Family Cancer Research Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
| | - Chujie Gong
- Department of Cancer Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
- Abramson Family Cancer Research Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
- Cell and Molecular Biology Graduate Group, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
| | - Sylvia Tang
- Department of Cancer Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
- Abramson Family Cancer Research Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
| | - Krista A. Budinich
- Department of Cancer Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
- Abramson Family Cancer Research Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
- Cancer Biology Graduate Group, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
| | - Ashley Vanderbeck
- VMD-PhD Program, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
- Immunology Graduate Group, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
- Division of Hematology/Oncology, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
| | - Kaeli M. Mathias
- Department of Cancer Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
- Abramson Family Cancer Research Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
- Biochemistry and Molecular Biophysics Graduate Group, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
- Center for Computational and Genomic Medicine, The Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania.
| | - Gerald B. Wertheim
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
- Division of Hematopathology, The Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania.
| | - Son C. Nguyen
- Epigenetics Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
- Department of Genetics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
| | - Riley Outen
- Division of Hematology/Oncology, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
| | - Eric F. Joyce
- Epigenetics Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
- Department of Genetics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
| | - Ivan Maillard
- Division of Hematology/Oncology, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
| | - Liling Wan
- Department of Cancer Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
- Abramson Family Cancer Research Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
- Epigenetics Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
- Institute for Regenerative Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
| |
Collapse
|
3
|
Dao B, Trinh VN, Nguyen HV, Nguyen HL, Le TD, Luu PL. Crosstalk between genomic variants and DNA methylation in FLT3 mutant acute myeloid leukemia. Brief Funct Genomics 2024:elae028. [PMID: 38944027 DOI: 10.1093/bfgp/elae028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 05/31/2024] [Accepted: 06/20/2024] [Indexed: 07/01/2024] Open
Abstract
Acute myeloid leukemia (AML) is a type of blood cancer with diverse genetic variations and DNA methylation alterations. By studying the interaction of gene mutations, expression, and DNA methylation, we aimed to gain valuable insights into the processes that lead to block differentiation in AML. We analyzed TCGA-LAML data (173 samples) with RNA sequencing and DNA methylation arrays, comparing FLT3 mutant (48) and wild-type (125) cases. We conducted differential gene expression analysis using cBioPortal, identified DNA methylation differences with ChAMP tool, and correlated them with gene expression changes. Gene set enrichment analysis (g:Profiler) revealed significant biological processes and pathways. ShinyGo and GeneCards were used to find potential transcription factors and their binding sites among significant genes. We found significant differentially expressed genes (DEGs) negatively correlated with their most significant methylation probes (Pearson correlation coefficient of -0.49, P-value <0.001) between FLT3 mutant and wild-type groups. Moreover, our exploration of 450 k CpG sites uncovered a global hypo-methylated status in 168 DEGs. Notably, these methylation changes were enriched in the promoter regions of Homebox superfamily gene, which are crucial in transcriptional-regulating pathways in blood cancer. Furthermore, in FLT3 mutant AML patient samples, we observed overexpress of WT1, a transcription factor known to bind homeobox gene family. This finding suggests a potential mechanism by which WT1 recruits TET2 to demethylate specific genomic regions. Integrating gene expression and DNA methylation analyses shed light on the impact of FLT3 mutations on cancer cell development and differentiation, supporting a two-hit model in AML. This research advances understanding of AML and fosters targeted therapeutic strategy development.
Collapse
Affiliation(s)
- Bac Dao
- Hanoi Medical University, Hanoi, Vietnam
- School of Biomedical Sciences, The University of Western Australia, Perth, Australia
| | - Van Ngu Trinh
- The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Huy V Nguyen
- Health Innovation and Transformation Centre, Federation University, Victoria, Australia
| | - Hoa L Nguyen
- Department of Population and Quantitative Health Sciences, UMass Chan Medical School
| | - Thuc Duy Le
- University of South Australia, Adelaide, Australia
| | - Phuc Loi Luu
- Data Science Division, Tam Anh Research Institute (TamRI), 2B Pho Quang Street, Ward 2, Tan Binh District, Ho Chi Minh City 700000, Vietnam
- Mathematics Department, Faculty of Fundamental Sciences, University of Medicine and Pharmacy at Ho Chi Minh City (UMP), 217 Hong Bang street, Ward 11, District 5, Ho Chi Minh City 700000, Vietnam
| |
Collapse
|
4
|
Kempis-Calanis LA, Rodríguez-Jorge O, Gutiérrez-Reyna DY, Ventura-Martínez CJ, Spicuglia S, Medina-Rivera A, Thieffry D, González A, Santana MA. Neonatal CD4+ T cells have a characteristic transcriptome and epigenome and respond to TCR stimulation with proliferation and yet a limited immune response. J Leukoc Biol 2024; 116:64-76. [PMID: 38146769 DOI: 10.1093/jleuko/qiad162] [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: 08/10/2023] [Revised: 11/28/2023] [Accepted: 11/30/2023] [Indexed: 12/27/2023] Open
Abstract
The adaptive immune response is coordinated by CD4+ T cells, which determine the type and strength of the immune response and the effector cells involved. It has been reported that CD4+ T cells are less responsive in neonates, leading to low activation of the cellular response and poor antibody production by B cells. This low response is essential for the tolerant window that favors birth transition from the sterile environment in the womb to the outside world but leaves neonates vulnerable to infection, which is still an important health issue. Neonates have a high morbidity and mortality rate due to infections, and the molecular reasons are still understudied. We asked whether the neonatal naive CD4+ T cells have a genomic program that predisposes them to a low response. Therefore, we evaluated the transcriptome and epigenome of human neonatal and adult naive CD4+ T cells. Our results point to a gene expression profile forming a distinct regulatory network in neonatal cells, which favors proliferation and a low T-cell response. Such expression profile is supported by a characteristic epigenetic landscape of neonatal CD4+ T cells, which correlates with the characteristic transcriptome of the neonatal cells. These results were confirmed by experiments showing a low response to activation signals, higher proliferation, and lower expression of cytokines of neonatal CD4+ T cells as compared to adult cells. Understanding this network could lead to novel vaccine formulations and better deal with life-threatening diseases during this highly vulnerable period of our lives.
Collapse
Affiliation(s)
- Linda Aimara Kempis-Calanis
- Laboratorio de Inmunología Celular y de Sistemas, Centro de Investigación en Dinámica Celular, Instituto de Investigación en Ciencias Básicas y Aplicadas, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001 Chamilpa 62209 Cuernavaca, México
| | - Otoniel Rodríguez-Jorge
- Laboratorio de Inmunología Celular y de Sistemas, Centro de Investigación en Dinámica Celular, Instituto de Investigación en Ciencias Básicas y Aplicadas, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001 Chamilpa 62209 Cuernavaca, México
| | - Darely Yarazeth Gutiérrez-Reyna
- Laboratorio de Inmunología Celular y de Sistemas, Centro de Investigación en Dinámica Celular, Instituto de Investigación en Ciencias Básicas y Aplicadas, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001 Chamilpa 62209 Cuernavaca, México
| | - Carlos Jesús Ventura-Martínez
- Laboratorio de Inmunología Celular y de Sistemas, Centro de Investigación en Dinámica Celular, Instituto de Investigación en Ciencias Básicas y Aplicadas, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001 Chamilpa 62209 Cuernavaca, México
| | - Salvatore Spicuglia
- Aix-Marseille University, Inserm, TAGC, UMR1090, Equipe Labélisée LIGUE contre le Cancer, 163 Avenue de Luminy, 13288 Marseille, France
| | - Alejandra Medina-Rivera
- Laboratorio Internacional de Investigación sobre el Genoma Humano, Universidad Nacional Autónoma de México, Campus UNAM 3002, Blvd. 3001, 76230 Juriquilla, Querétaro, México
| | - Denis Thieffry
- Département de Biologie de l'Ecole Normale Supérieure, PSL University, 46 rue d'Ulm, 75005 Paris, France
| | - Aitor González
- Aix-Marseille University, Inserm, TAGC, UMR1090, Equipe Labélisée LIGUE contre le Cancer, 163 Avenue de Luminy, 13288 Marseille, France
| | - María Angélica Santana
- Laboratorio de Inmunología Celular y de Sistemas, Centro de Investigación en Dinámica Celular, Instituto de Investigación en Ciencias Básicas y Aplicadas, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001 Chamilpa 62209 Cuernavaca, México
| |
Collapse
|
5
|
Shenoy US, Adiga D, Alhedyan F, Kabekkodu SP, Radhakrishnan R. HOXA9 transcription factor is a double-edged sword: from development to cancer progression. Cancer Metastasis Rev 2024; 43:709-728. [PMID: 38062297 PMCID: PMC11156722 DOI: 10.1007/s10555-023-10159-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Accepted: 11/30/2023] [Indexed: 04/02/2024]
Abstract
The HOXA9 transcription factor serves as a molecular orchestrator in cancer stemness, epithelial-mesenchymal transition (EMT), metastasis, and generation of the tumor microenvironment in hematological and solid malignancies. However, the multiple modes of regulation, multifaceted functions, and context-dependent interactions responsible for the dual role of HOXA9 as an oncogene or tumor suppressor in cancer remain obscure. Hence, unravelling its molecular complexities, binding partners, and interacting signaling molecules enables us to comprehend HOXA9-mediated transcriptional programs and molecular crosstalk. However, it is imperative to understand its central role in fundamental biological processes such as embryogenesis, foetus implantation, hematopoiesis, endothelial cell proliferation, and tissue homeostasis before designing targeted therapies. Indeed, it presents an enormous challenge for clinicians to selectively target its oncogenic functions or restore tumor-suppressive role without altering normal cellular functions. In addition to its implications in cancer, the present review also focuses on the clinical applications of HOXA9 in recurrence and drug resistance, which may provide a broader understanding beyond oncology, open new avenues for clinicians for accurate diagnoses, and develop personalized treatment strategies. Furthermore, we have also discussed the existing therapeutic options and accompanying challenges in HOXA9-targeted therapies in different cancer types.
Collapse
Affiliation(s)
- U Sangeetha Shenoy
- Department of Cell and Molecular Biology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Divya Adiga
- Department of Cell and Molecular Biology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Faisal Alhedyan
- Department of Oral and Maxillofacial Surgery and Diagnostic Sciences, Prince Sattam bin Abdulaziz University, Al-Kharj, 11942, Saudi Arabia
- Unit of Oral and Maxillofacial Pathology, School of Clinical Dentistry, The University of Sheffield, Sheffield, United Kingdom
| | - Shama Prasada Kabekkodu
- Department of Cell and Molecular Biology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Raghu Radhakrishnan
- Department of Oral Pathology, Manipal College of Dental Sciences, Manipal Academy of Higher Education, Manipal, 576104, India.
- Unit of Oral and Maxillofacial Pathology, School of Clinical Dentistry, The University of Sheffield, Sheffield, United Kingdom.
| |
Collapse
|
6
|
Wang T, Liu M, Jia M. Integrated Bioinformatic Analysis of the Correlation of HOXA10 Expression with Survival and Immune Cell Infiltration in Lower Grade Glioma. Biochem Genet 2023; 61:238-257. [PMID: 35836029 DOI: 10.1007/s10528-022-10258-9] [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: 12/05/2021] [Accepted: 06/22/2022] [Indexed: 01/24/2023]
Abstract
Homeobox A10 (HOXA10) encodes a transcription factor that regulates developmental processes. Whether HOXA10 mRNA levels in lower grade glioma (LGG) correlate with survival and immune cell infiltration has not been evaluated. The differential expression of HOXA10 in different tumors and their corresponding normal tissues was evaluated by exploring public datasets. The correlations between HOXA10 and survival, tumor immune cell infiltration, diverse gene mutation characteristics, and tumor mutation burden in LGG were also investigated using several independent datasets. Pathway enrichment analysis was conducted to identify HOXA10-associated signaling pathways. We found that HOXA10 expression levels did not significantly differ between LGG tumors and normal tissues. Upon assessing the association between HOXA10 expression and immune cell infiltration in LGG, as expected, HOXA10 gene mRNA levels were positively associated with B-cell and dendritic cell infiltration levels in public online datasets. Different HOXA10 expression groups showed diverse gene mutation characteristics and TMB, and low HOXA10 expression was closely related to improved LGG patient survival. Pathway enrichment analysis of HOXA10-associated genes indicated that the cell cycle signaling pathway may participate in affecting the outcomes of LGG patients. Our findings showed that HOXA10 expression was associated with LGG prognosis and tumor immunity.
Collapse
Affiliation(s)
- Ting Wang
- Department of Radiology, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Shandong Medicine and Health Key Laboratory of Abdominal Medical Imaging, Shandong Lung Cancer Institute, Shandong Institute of Neuroimmunology, Jinan, Shandong, China
| | - Mingqian Liu
- Department of Hematology, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan, Shandong, China
| | - Ming Jia
- Department of Cancer Center, The Secondary Hospital, Cheeloo College of Medicine, Shandong University, 247 Beiyuan Street, Jinan, 250033, Shandong, China.
| |
Collapse
|
7
|
Ma J, Zhang T, Wang W, Chen Y, Cai W, Zhu B, Xu L, Gao H, Zhang L, Li J, Gao X. Comparative Transcriptome Analyses of Gayal (Bos frontalis), Yak (Bos grunniens), and Cattle (Bos taurus) Reveal the High-Altitude Adaptation. Front Genet 2022; 12:778788. [PMID: 35087567 PMCID: PMC8789257 DOI: 10.3389/fgene.2021.778788] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Accepted: 12/06/2021] [Indexed: 11/13/2022] Open
Abstract
Gayal and yak are well adapted to their local high-altitude environments, yet the transcriptional regulation difference of the plateau environment among them remains obscure. Herein, cross-tissue and cross-species comparative transcriptome analyses were performed for the six hypoxia-sensitive tissues from gayal, yak, and cattle. Gene expression profiles for all single-copy orthologous genes showed tissue-specific expression patterns. By differential expression analysis, we identified 3,020 and 1,995 differentially expressed genes (DEGs) in at least one tissue of gayal vs. cattle and yak vs. cattle, respectively. Notably, we found that the adaptability of the gayal to the alpine canyon environment is highly similar to the yak living in the Qinghai-Tibet Plateau, such as promoting red blood cell development, angiogenesis, reducing blood coagulation, immune system activation, and energy metabolism shifts from fatty acid β-oxidation to glycolysis. By further analyzing the common and unique DEGs in the six tissues, we also found that numerous expressed regulatory genes related to these functions are unique in the gayal and yak, which may play important roles in adapting to the corresponding high-altitude environment. Combined with WGCNA analysis, we found that UQCRC1 and COX5A are the shared differentially expressed hub genes related to the energy supply of myocardial contraction in the heart-related modules of gayal and yak, and CAPS is a shared differential hub gene among the hub genes of the lung-related module, which is related to pulmonary artery smooth muscle contraction. Additionally, EDN3 is the unique differentially expressed hub gene related to the tracheal epithelium and pulmonary vasoconstriction in the lung of gayal. CHRM2 is a unique differentially expressed hub gene that was identified in the heart of yak, which has an important role in the autonomous regulation of the heart. These results provide a basis for further understanding the complex transcriptome expression pattern and the regulatory mechanism of high-altitude domestication of gayal and yak.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | | | | | - Junya Li
- *Correspondence: Junya Li, ; Xue Gao,
| | - Xue Gao
- *Correspondence: Junya Li, ; Xue Gao,
| |
Collapse
|
8
|
Feng Y, Zhang T, Wang Y, Xie M, Ji X, Luo X, Huang W, Xia L. Homeobox Genes in Cancers: From Carcinogenesis to Recent Therapeutic Intervention. Front Oncol 2021; 11:770428. [PMID: 34722321 PMCID: PMC8551923 DOI: 10.3389/fonc.2021.770428] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 09/28/2021] [Indexed: 12/11/2022] Open
Abstract
The homeobox (HOX) genes encoding an evolutionarily highly conserved family of homeodomain-containing transcriptional factors are essential for embryogenesis and tumorigenesis. HOX genes are involved in cell identity determination during early embryonic development and postnatal processes. The deregulation of HOX genes is closely associated with numerous human malignancies, highlighting the indispensable involvement in mortal cancer development. Since most HOX genes behave as oncogenes or tumor suppressors in human cancer, a better comprehension of their upstream regulators and downstream targets contributes to elucidating the function of HOX genes in cancer development. In addition, targeting HOX genes may imply therapeutic potential. Recently, novel therapies such as monoclonal antibodies targeting tyrosine receptor kinases, small molecular chemical inhibitors, and small interfering RNA strategies, are difficult to implement for targeting transcriptional factors on account of the dual function and pleiotropic nature of HOX genes-related molecular networks. This paper summarizes the current state of knowledge on the roles of HOX genes in human cancer and emphasizes the emerging importance of HOX genes as potential therapeutic targets to overcome the limitations of present cancer therapy.
Collapse
Affiliation(s)
- Yangyang Feng
- Department of Gastroenterology, Institute of Liver and Gastrointestinal Diseases, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Tongyue Zhang
- Department of Gastroenterology, Institute of Liver and Gastrointestinal Diseases, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yijun Wang
- Department of Gastroenterology, Institute of Liver and Gastrointestinal Diseases, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Meng Xie
- Department of Gastroenterology, Institute of Liver and Gastrointestinal Diseases, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaoyu Ji
- Department of Gastroenterology, Institute of Liver and Gastrointestinal Diseases, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiangyuan Luo
- Department of Gastroenterology, Institute of Liver and Gastrointestinal Diseases, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Wenjie Huang
- Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Limin Xia
- Department of Gastroenterology, Institute of Liver and Gastrointestinal Diseases, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| |
Collapse
|
9
|
Aljazi MB, Gao Y, Wu Y, Mias GI, He J. Histone H3K36me2-Specific Methyltransferase ASH1L Promotes MLL-AF9-Induced Leukemogenesis. Front Oncol 2021; 11:754093. [PMID: 34692539 PMCID: PMC8534482 DOI: 10.3389/fonc.2021.754093] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 09/17/2021] [Indexed: 01/19/2023] Open
Abstract
ASH1L and MLL1 are two histone methyltransferases that facilitate transcriptional activation during normal development. However, the roles of ASH1L and its enzymatic activity in the development of MLL-rearranged leukemias are not fully elucidated in Ash1L gene knockout animal models. In this study, we used an Ash1L conditional knockout mouse model to show that loss of ASH1L in hematopoietic progenitor cells impaired the initiation of MLL-AF9-induced leukemic transformation in vitro. Furthermore, genetic deletion of ASH1L in the MLL-AF9-transformed cells impaired the maintenance of leukemic cells in vitro and largely blocked the leukemia progression in vivo. Importantly, the loss of ASH1L function in the Ash1L-deleted cells could be rescued by wild-type but not the catalytic-dead mutant ASH1L, suggesting the enzymatic activity of ASH1L was required for its function in promoting MLL-AF9-induced leukemic transformation. At the molecular level, ASH1L enhanced the MLL-AF9 target gene expression by directly binding to the gene promoters and modifying the local histone H3K36me2 levels. Thus, our study revealed the critical functions of ASH1L in promoting the MLL-AF9-induced leukemogenesis, which provides a molecular basis for targeting ASH1L and its enzymatic activity to treat MLL-AF9-induced leukemias.
Collapse
Affiliation(s)
- Mohammad B Aljazi
- Department of Biochemistry and Molecular Biology, College of Nature Sciences, Michigan State University, East Lansing, MI, United States
| | - Yuen Gao
- Department of Biochemistry and Molecular Biology, College of Nature Sciences, Michigan State University, East Lansing, MI, United States
| | - Yan Wu
- Department of Biochemistry and Molecular Biology, College of Nature Sciences, Michigan State University, East Lansing, MI, United States
| | - George I Mias
- Department of Biochemistry and Molecular Biology, College of Nature Sciences, Michigan State University, East Lansing, MI, United States.,Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing, MI, United States
| | - Jin He
- Department of Biochemistry and Molecular Biology, College of Nature Sciences, Michigan State University, East Lansing, MI, United States
| |
Collapse
|
10
|
Cieslak A, Charbonnier G, Tesio M, Mathieu EL, Belhocine M, Touzart A, Smith C, Hypolite G, Andrieu GP, Martens JHA, Janssen-Megens E, Gut M, Gut I, Boissel N, Petit A, Puthier D, Macintyre E, Stunnenberg HG, Spicuglia S, Asnafi V. Blueprint of human thymopoiesis reveals molecular mechanisms of stage-specific TCR enhancer activation. J Exp Med 2021; 217:151947. [PMID: 32667968 PMCID: PMC7478722 DOI: 10.1084/jem.20192360] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 04/03/2020] [Accepted: 05/15/2020] [Indexed: 01/30/2023] Open
Abstract
Cell differentiation is accompanied by epigenetic changes leading to precise lineage definition and cell identity. Here we present a comprehensive resource of epigenomic data of human T cell precursors along with an integrative analysis of other hematopoietic populations. Although T cell commitment is accompanied by large scale epigenetic changes, we observed that the majority of distal regulatory elements are constitutively unmethylated throughout T cell differentiation, irrespective of their activation status. Among these, the TCRA gene enhancer (Eα) is in an open and unmethylated chromatin structure well before activation. Integrative analyses revealed that the HOXA5-9 transcription factors repress the Eα enhancer at early stages of T cell differentiation, while their decommission is required for TCRA locus activation and enforced αβ T lineage differentiation. Remarkably, the HOXA-mediated repression of Eα is paralleled by the ectopic expression of homeodomain-related oncogenes in T cell acute lymphoblastic leukemia. These results highlight an analogous enhancer repression mechanism at play in normal and cancer conditions, but imposing distinct developmental constraints.
Collapse
Affiliation(s)
- Agata Cieslak
- Université de Paris (Descartes), Institut Necker-Enfants Malades, Institut National de la Santé et de la Recherche Médicale U1151, and Laboratory of Onco-Hematology, Assistance Publique-Hôpitaux de Paris, Hôpital Necker Enfants-Malades, Paris, France
| | - Guillaume Charbonnier
- Aix-Marseille University, Institut National de la Santé et de la Recherche Médicale, Theories and Approaches of Genomic Complexity, UMR1090, Marseille, France.,Equipe Labellisée Ligue Contre le Cancer, Marseille, France
| | - Melania Tesio
- Université de Paris (Descartes), Institut Necker-Enfants Malades, Institut National de la Santé et de la Recherche Médicale U1151, and Laboratory of Onco-Hematology, Assistance Publique-Hôpitaux de Paris, Hôpital Necker Enfants-Malades, Paris, France
| | - Eve-Lyne Mathieu
- Aix-Marseille University, Institut National de la Santé et de la Recherche Médicale, Theories and Approaches of Genomic Complexity, UMR1090, Marseille, France.,Equipe Labellisée Ligue Contre le Cancer, Marseille, France
| | - Mohamed Belhocine
- Aix-Marseille University, Institut National de la Santé et de la Recherche Médicale, Theories and Approaches of Genomic Complexity, UMR1090, Marseille, France.,Equipe Labellisée Ligue Contre le Cancer, Marseille, France
| | - Aurore Touzart
- Université de Paris (Descartes), Institut Necker-Enfants Malades, Institut National de la Santé et de la Recherche Médicale U1151, and Laboratory of Onco-Hematology, Assistance Publique-Hôpitaux de Paris, Hôpital Necker Enfants-Malades, Paris, France.,Division of Cancer Epigenomics, German Cancer Research Center, Heidelberg, Germany
| | - Charlotte Smith
- Université de Paris (Descartes), Institut Necker-Enfants Malades, Institut National de la Santé et de la Recherche Médicale U1151, and Laboratory of Onco-Hematology, Assistance Publique-Hôpitaux de Paris, Hôpital Necker Enfants-Malades, Paris, France
| | - Guillaume Hypolite
- Université de Paris (Descartes), Institut Necker-Enfants Malades, Institut National de la Santé et de la Recherche Médicale U1151, and Laboratory of Onco-Hematology, Assistance Publique-Hôpitaux de Paris, Hôpital Necker Enfants-Malades, Paris, France
| | - Guillaume P Andrieu
- Université de Paris (Descartes), Institut Necker-Enfants Malades, Institut National de la Santé et de la Recherche Médicale U1151, and Laboratory of Onco-Hematology, Assistance Publique-Hôpitaux de Paris, Hôpital Necker Enfants-Malades, Paris, France
| | - Joost H A Martens
- Department of Molecular Biology, Faculties of Science and Medicine, Radboud Institute for Molecular Life Sciences, Radboud University, Nijmegen, Netherlands
| | - Eva Janssen-Megens
- Department of Molecular Biology, Faculties of Science and Medicine, Radboud Institute for Molecular Life Sciences, Radboud University, Nijmegen, Netherlands
| | - Marta Gut
- Centro Nacional de Análisis Genómico-Centre for Genomic Regulation, Barcelona Institute of Science and Technology, Barcelona, Spain.,Universitat Pompeu Fabra, Barcelona, Spain
| | - Ivo Gut
- Centro Nacional de Análisis Genómico-Centre for Genomic Regulation, Barcelona Institute of Science and Technology, Barcelona, Spain.,Universitat Pompeu Fabra, Barcelona, Spain
| | - Nicolas Boissel
- Université Paris Diderot, Institut Universitaire d'Hématologie, EA-3518, Assistance Publique-Hôpitaux de Paris, University Hospital Saint-Louis, Paris, France
| | - Arnaud Petit
- Department of Pediatric Hematology and Oncology, Assistance Publique-Hôpitaux de Paris, Hôpital Armand Trousseau, Paris, France
| | - Denis Puthier
- Aix-Marseille University, Institut National de la Santé et de la Recherche Médicale, Theories and Approaches of Genomic Complexity, UMR1090, Marseille, France.,Equipe Labellisée Ligue Contre le Cancer, Marseille, France
| | - Elizabeth Macintyre
- Université de Paris (Descartes), Institut Necker-Enfants Malades, Institut National de la Santé et de la Recherche Médicale U1151, and Laboratory of Onco-Hematology, Assistance Publique-Hôpitaux de Paris, Hôpital Necker Enfants-Malades, Paris, France
| | - Hendrik G Stunnenberg
- Department of Molecular Biology, Faculties of Science and Medicine, Radboud Institute for Molecular Life Sciences, Radboud University, Nijmegen, Netherlands
| | - Salvatore Spicuglia
- Aix-Marseille University, Institut National de la Santé et de la Recherche Médicale, Theories and Approaches of Genomic Complexity, UMR1090, Marseille, France.,Equipe Labellisée Ligue Contre le Cancer, Marseille, France
| | - Vahid Asnafi
- Université de Paris (Descartes), Institut Necker-Enfants Malades, Institut National de la Santé et de la Recherche Médicale U1151, and Laboratory of Onco-Hematology, Assistance Publique-Hôpitaux de Paris, Hôpital Necker Enfants-Malades, Paris, France
| |
Collapse
|
11
|
Rajavel A, Schmitt AO, Gültas M. Computational Identification of Master Regulators Influencing Trypanotolerance in Cattle. Int J Mol Sci 2021; 22:ijms22020562. [PMID: 33429951 PMCID: PMC7827104 DOI: 10.3390/ijms22020562] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 12/31/2020] [Accepted: 01/05/2021] [Indexed: 12/15/2022] Open
Abstract
African Animal Trypanosomiasis (AAT) is transmitted by the tsetse fly which carries pathogenic trypanosomes in its saliva, thus causing debilitating infection to livestock health. As the disease advances, a multistage progression process is observed based on the progressive clinical signs displayed in the host’s body. Investigation of genes expressed with regular monotonic patterns (known as Monotonically Expressed Genes (MEGs)) and of their master regulators can provide important clue for the understanding of the molecular mechanisms underlying the AAT disease. For this purpose, we analysed MEGs for three tissues (liver, spleen and lymph node) of two cattle breeds, namely trypanosusceptible Boran and trypanotolerant N’Dama. Our analysis revealed cattle breed-specific master regulators which are highly related to distinguish the genetic programs in both cattle breeds. Especially the master regulators MYC and DBP found in this study, seem to influence the immune responses strongly, thereby susceptibility and trypanotolerance of Boran and N’Dama respectively. Furthermore, our pathway analysis also bolsters the crucial roles of these master regulators. Taken together, our findings provide novel insights into breed-specific master regulators which orchestrate the regulatory cascades influencing the level of trypanotolerance in cattle breeds and thus could be promising drug targets for future therapeutic interventions.
Collapse
Affiliation(s)
- Abirami Rajavel
- Breeding Informatics Group, Department of Animal Sciences, Georg-August University, Margarethe von Wrangell-Weg 7, 37075 Göttingen, Germany; (A.R.); (A.O.S.)
| | - Armin Otto Schmitt
- Breeding Informatics Group, Department of Animal Sciences, Georg-August University, Margarethe von Wrangell-Weg 7, 37075 Göttingen, Germany; (A.R.); (A.O.S.)
- Center for Integrated Breeding Research (CiBreed), Albrecht-Thaer-Weg 3, Georg-August University, 37075 Göttingen, Germany
| | - Mehmet Gültas
- Breeding Informatics Group, Department of Animal Sciences, Georg-August University, Margarethe von Wrangell-Weg 7, 37075 Göttingen, Germany; (A.R.); (A.O.S.)
- Center for Integrated Breeding Research (CiBreed), Albrecht-Thaer-Weg 3, Georg-August University, 37075 Göttingen, Germany
- Correspondence:
| |
Collapse
|
12
|
Jia Y, Bleicher F, Reboulet J, Merabet S. Bimolecular Fluorescence Complementation (BiFC) and Multiplexed Imaging of Protein-Protein Interactions in Human Living Cells. Methods Mol Biol 2021; 2350:173-190. [PMID: 34331286 DOI: 10.1007/978-1-0716-1593-5_12] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Deciphering protein-protein interactions (PPIs) in vivo is crucial to understand protein function. Bimolecular fluorescence complementation (BiFC) makes applicable the analysis of PPIs in many different native contexts, including human live cells. It relies on the property of monomeric fluorescent proteins to be reconstituted from two separate subfragments upon spatial proximity. Candidate partners fused to such complementary subfragments can form a fluorescent protein complex upon interaction, allowing visualization of weak and transient PPIs. It can also be applied for investigation of distinct PPIs at the same time using a multicolor setup. In this chapter, we provide a detailed protocol for analyzing PPIs by doing BiFC in cultured cells. Proof-of-principle experiments rely on the complementation property between the N-terminal fragment of mVenus (designated VN173) and the C-terminal fragment of mCerulean (designated CC155) and the partnership between HOXA7 and PBX1 proteins. This protocol is compatible with any other fluorescent complementation pair fragments and any type of candidate interacting proteins.
Collapse
Affiliation(s)
- Yunlong Jia
- Institut de Génomique Fonctionnelle de Lyon, UMR5242, Université Lyon 1, CNRS, Ecole Normale Supérieure de Lyon, Lyon Cedex 07, France
| | - Françoise Bleicher
- Institut de Génomique Fonctionnelle de Lyon, UMR5242, Université Lyon 1, CNRS, Ecole Normale Supérieure de Lyon, Lyon Cedex 07, France
| | - Jonathan Reboulet
- Institut de Génomique Fonctionnelle de Lyon, UMR5242, Université Lyon 1, CNRS, Ecole Normale Supérieure de Lyon, Lyon Cedex 07, France
| | - Samir Merabet
- Institut de Génomique Fonctionnelle de Lyon, UMR5242, Université Lyon 1, CNRS, Ecole Normale Supérieure de Lyon, Lyon Cedex 07, France.
| |
Collapse
|
13
|
HOX Genes Family and Cancer: A Novel Role for Homeobox B9 in the Resistance to Anti-Angiogenic Therapies. Cancers (Basel) 2020; 12:cancers12113299. [PMID: 33171691 PMCID: PMC7695342 DOI: 10.3390/cancers12113299] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 10/30/2020] [Accepted: 11/06/2020] [Indexed: 01/05/2023] Open
Abstract
Simple Summary The inhibition of angiogenesis, relying on the use of drugs targeting the VEGF signaling pathway, has become one of the main strategies for cancer treatment. However, the intrinsic and acquired resistance to this type of therapy limit its efficacy. Thus, the identification of novel therapeutic targets is urgently needed. The resistance to anti-angiogenic treatment often occurs through the activation of alternative VEGF independent signaling pathways and recruitment of bone marrow-derived pro-angiogenic cells in the tumor microenvironment. HOX genes are key regulators of embryonic development, also involved in angiogenesis and in cancer progression. HOXB9 upregulation occurs in many types of cancer and it has been identified as a critical transcription factor involved in tumour resistance to anti-angiogenic drugs. Indeed, HOXB9 modulates the expression of alternative pro-angiogenic secreted factors in the tumour microenvironment leading tumor escape from the anti-angiogenic treatments. Hence, HOXB9 could serves as a novel therapeutic target to overcome the resistance to anti-angiogenic therapies. Abstract Angiogenesis is one of the hallmarks of cancer, and the inhibition of pro-angiogenic factors and or their receptors has become a primary strategy for cancer therapy. However, despite promising results in preclinical studies, the majority of patients either do not respond to these treatments or, after an initial period of response, they develop resistance to anti-angiogenic agents. Thus, the identification of a novel therapeutic target is urgently needed. Multiple mechanisms of resistance to anti-angiogenic therapy have been identified, including the upregulation of alternative angiogenic pathways and the recruitment of pro-angiogenic myeloid cells in the tumor microenvironment. Homeobox containing (HOX) genes are master regulators of embryonic development playing a pivotal role during both embryonic vasculogenesis and pathological angiogenesis in adults. The importance of HOX genes during cancer progression has been reported in many studies. In this review we will give a brief description of the HOX genes and their involvement in angiogenesis and cancer, with particular emphasis on HOXB9 as a possible novel target for anti-angiogenic therapy. HOXB9 upregulation has been reported in many types of cancers and it has been identified as a critical transcription factor involved in resistance to anti-angiogenic drugs.
Collapse
|
14
|
Gutiérrez-Reyna DY, Cedillo-Baños A, Kempis-Calanis LA, Ramírez-Pliego O, Bargier L, Puthier D, Abad-Flores JD, Thomas-Chollier M, Thieffry D, Medina-Rivera A, Spicuglia S, Santana MA. IL-12 Signaling Contributes to the Reprogramming of Neonatal CD8 + T Cells. Front Immunol 2020; 11:1089. [PMID: 32582178 PMCID: PMC7292210 DOI: 10.3389/fimmu.2020.01089] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Accepted: 05/05/2020] [Indexed: 01/26/2023] Open
Abstract
Neonates are highly susceptible to intracellular pathogens, leading to high morbidity and mortality rates. CD8+ T lymphocytes are responsible for the elimination of infected cells. Understanding the response of these cells to normal and high stimulatory conditions is important to propose better treatments and vaccine formulations for neonates. We have previously shown that human neonatal CD8+ T cells overexpress innate inflammatory genes and have a low expression of cytotoxic and cell signaling genes. To investigate the activation potential of these cells, we evaluated the transcriptome of human neonatal and adult naïve CD8+ T cells after TCR/CD28 signals ± IL-12. We found that in neonatal cells, IL-12 signals contribute to the adult-like expression of genes associated with cell-signaling, T-cell cytokines, metabolism, and cell division. Additionally, IL-12 signals contributed to the downregulation of the neutrophil signature transcription factor CEBPE and other immaturity related genes. To validate the transcriptome results, we evaluated the expression of a series of genes by RT-qPCR and the promoter methylation status on independent samples. We found that in agreement with the transcriptome, IL-12 signals contributed to the chromatin closure of neutrophil-like genes and the opening of cytotoxicity genes, suggesting that IL-12 signals contribute to the epigenetic reprogramming of neonatal lymphocytes. Furthermore, high expression of some inflammatory genes was observed in naïve and stimulated neonatal cells, in agreement with the high inflammatory profile of neonates to infections. Altogether our results point to an important contribution of IL-12 signals to the reprogramming of the neonatal CD8+ T cells.
Collapse
Affiliation(s)
- Darely Y Gutiérrez-Reyna
- Centro de Investigación en Dinámica Celular (IICBA), Universidad Autónoma del Estado de Morelos, Cuernavaca, Mexico
| | - Alejandra Cedillo-Baños
- Centro de Investigación en Dinámica Celular (IICBA), Universidad Autónoma del Estado de Morelos, Cuernavaca, Mexico
| | - Linda A Kempis-Calanis
- Centro de Investigación en Dinámica Celular (IICBA), Universidad Autónoma del Estado de Morelos, Cuernavaca, Mexico
| | - Oscar Ramírez-Pliego
- Centro de Investigación en Dinámica Celular (IICBA), Universidad Autónoma del Estado de Morelos, Cuernavaca, Mexico
| | - Lisa Bargier
- Aix-Marseille University, TAGC, INSERM UMR1090, Marseille, France
| | - Denis Puthier
- Aix-Marseille University, TAGC, INSERM UMR1090, Marseille, France.,Equipe Labélisée Ligue Contre le Cancer, Marseille, France
| | - Jose D Abad-Flores
- Aix-Marseille University, TAGC, INSERM UMR1090, Marseille, France.,Equipe Labélisée Ligue Contre le Cancer, Marseille, France
| | - Morgane Thomas-Chollier
- Institut de Biologie de l'École Normale Supérieure (IBENS), Département de Biologie, École Normale Supérieure, CNRS, INSERM, Université PSL, Paris, France
| | - Denis Thieffry
- Institut de Biologie de l'École Normale Supérieure (IBENS), Département de Biologie, École Normale Supérieure, CNRS, INSERM, Université PSL, Paris, France
| | - Alejandra Medina-Rivera
- Laboratorio Internacional de Investigación sobre el Genoma Humano, Universidad Nacional Autónoma de Mexico, Juriquilla, Mexico
| | - Salvatore Spicuglia
- Aix-Marseille University, TAGC, INSERM UMR1090, Marseille, France.,Equipe Labélisée Ligue Contre le Cancer, Marseille, France
| | - Maria A Santana
- Centro de Investigación en Dinámica Celular (IICBA), Universidad Autónoma del Estado de Morelos, Cuernavaca, Mexico
| |
Collapse
|
15
|
Padmanabhan U, Dahake R, Chowdhary AS, Koka PS. HIV-1 inhibits haematopoiesis via microRNA secreted by virus-infected CD4+ T cells. Eur J Haematol 2019; 104:170-180. [PMID: 31733152 DOI: 10.1111/ejh.13350] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 11/02/2019] [Accepted: 11/06/2019] [Indexed: 11/30/2022]
Abstract
INTRODUCTION HIV-1-infected patients develop haematological disorders such as cytopenias. One possible explanation is the inhibition of haematopoiesis at the level of differentiation of CD34+ haematopoietic progenitor stem cells. Based on our previous studies, we hypothesised that there may be viral encoded, or host cellular factors which participate in the process of inhibition of haematopoiesis. MATERIALS AND METHODS Virus-depleted media from infected CD4+ T cells was prepared by filtration and added to CD34+ cell differentiation semisolid medium. We have also used the virus-depleted media to isolate host/viral factors including miRNA. Isolated miRNAs were screened for their haematopoietic inhibitory function using the miRNA mining approach. RESULTS Addition of virus-depleted media caused a 40% inhibition of differentiation of CD34+ cells into myeloid and erythroid colony formation. Real-time RT-PCR showed miR-15a and miR-24 from both pIndie-C1 and pNL4.3 HIV-1-infected cells showed a significant differential expression when compared to control media. CONCLUSION In this study, we have identified two miRNAs, miR-15a and miR-24 secreted from purified HIV-1-infected CD4+ T cells that inhibited CD34+ haematopoietic progenitor stem cell differentiation into myeloid and erythroid colonies in vitro.
Collapse
Affiliation(s)
- Usha Padmanabhan
- Department of Cell Biology, Haffkine Institute for Training, Research & Testing, Mumbai, India
| | - Ritwik Dahake
- Department of Virology & Immunology, Haffkine Institute for Training, Research & Testing, Mumbai, India
| | - Abhay S Chowdhary
- Department of Microbiology, School of Medicine, D Y Patil University, Navi Mumbai, India
| | - Prasad S Koka
- Department of Virology & Immunology, Haffkine Institute for Training, Research & Testing, Mumbai, India
| |
Collapse
|
16
|
Alriyami M, Marchand L, Li Q, Du X, Olivier M, Polychronakos C. Clonal copy-number mosaicism in autoreactive T lymphocytes in diabetic NOD mice. Genome Res 2019; 29:1951-1961. [PMID: 31694869 PMCID: PMC6886509 DOI: 10.1101/gr.247882.118] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Accepted: 11/02/2019] [Indexed: 01/10/2023]
Abstract
Concordance for type 1 diabetes (T1D) is far from 100% in monozygotic twins and in inbred nonobese diabetic (NOD) mice, despite genetic identity and shared environment during incidence peak years. This points to stochastic determinants, such as postzygotic mutations (PZMs) in the expanding antigen-specific autoreactive T cell lineages, by analogy to their role in the expanding tumor lineage in cancer. Using comparative genomic hybridization of DNA from pancreatic lymph-node memory CD4+ T cells of 25 diabetic NOD mice, we found lymphocyte-exclusive mosaic somatic copy-number aberrations (CNAs) with highly nonrandom independent involvement of the same gene(s) across different mice, some with an autoimmunity association (e.g., Ilf3 and Dgka). We confirmed genes of interest using the gold standard approach for CNA quantification, multiplex ligation-dependent probe amplification (MLPA), as an independent method. As controls, we examined lymphocytes expanded during normal host defense (17 NOD and BALB/c mice infected with Leishmania major parasite). Here, CNAs found were fewer and significantly smaller compared to those in autoreactive cells (P = 0.0019). We determined a low T cell clonality for our samples suggesting a prethymic formation of these CNAs. In this study, we describe a novel, unexplored phenomenon of a potential causal contribution of PZMs in autoreactive T cells in T1D pathogenesis. We expect that exploration of point mutations and studies in human T cells will enable the further delineation of driver genes to target for functional studies. Our findings challenge the classical notions of autoimmunity and open conceptual avenues toward individualized prevention and therapeutics.
Collapse
Affiliation(s)
- Maha Alriyami
- The Endocrine Genetics Laboratory, Child Health and Human Development Program and Department of Pediatrics, McGill University Health Centre Research Institute, Montreal, Quebec H3H 1P3, Canada.,Department of Biochemistry, College of Medicine and Health Sciences, Sultan Qaboos University, 123, Muscat, Oman
| | - Luc Marchand
- The Endocrine Genetics Laboratory, Child Health and Human Development Program and Department of Pediatrics, McGill University Health Centre Research Institute, Montreal, Quebec H3H 1P3, Canada
| | - Quan Li
- The Endocrine Genetics Laboratory, Child Health and Human Development Program and Department of Pediatrics, McGill University Health Centre Research Institute, Montreal, Quebec H3H 1P3, Canada.,Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, ON M5G 2C1, Canada
| | - Xiaoyu Du
- The Endocrine Genetics Laboratory, Child Health and Human Development Program and Department of Pediatrics, McGill University Health Centre Research Institute, Montreal, Quebec H3H 1P3, Canada
| | - Martin Olivier
- Departments of Medicine, Microbiology, and Immunology, McGill University Health Centre Research Institute, Montreal, Quebec H3H 1P3, Canada
| | - Constantin Polychronakos
- The Endocrine Genetics Laboratory, Child Health and Human Development Program and Department of Pediatrics, McGill University Health Centre Research Institute, Montreal, Quebec H3H 1P3, Canada
| |
Collapse
|
17
|
A predicted novel protein isoform of HOXA9. Leuk Res 2019; 82:7-10. [PMID: 31112908 DOI: 10.1016/j.leukres.2019.05.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 04/15/2019] [Accepted: 05/03/2019] [Indexed: 11/20/2022]
|
18
|
Ghanavat M, Ebrahimi M, Rafieemehr H, Maniati M, Behzad MM, Shahrabi S. Thrombocytopenia in solid tumors: Prognostic significance. Oncol Rev 2019; 13:413. [PMID: 31205603 PMCID: PMC6542370 DOI: 10.4081/oncol.2019.413] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Accepted: 03/18/2019] [Indexed: 01/01/2023] Open
Abstract
Solid tumors are a heterogeneous group of malignancies that result from out-of-control proliferation of cells. Thrombocytopenia is a common complication among patients with solid tumors that predispose them to bleeding disorders. The aim of this review article is to investigate the underlying mechanisms of the risk and incidence of thrombocytopenia in solid tumors. It can be argued that thrombocytopenia is a poor prognostic factor in solid tumors that can result from several factors such as polymorphism and mutation in some transcription factors and cytokines involved in megakaryocytic maturation or from the adverse effects of treatment. Therefore, an understanding of the exact mechanism of thrombocytopenia pathogenesis in each stage of solid tumors can help in developing therapeutic strategies to decrease bleeding complications in these malignancies.
Collapse
Affiliation(s)
- Majid Ghanavat
- Child Growth and Development Research Center, Isfahan University of Medical Sciences, Isfahan
| | - Mina Ebrahimi
- Thalassemia and Hemoglobinopathy Research Center, Research Institute of Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz
| | - Hassan Rafieemehr
- Department of Medical Laboratory Sciences, School of Paramedicine, Hamadan University of Medical Sciences, Hamadan
| | - Mahmood Maniati
- Thalassemia and Hemoglobinopathy Research Center, Research Institute of Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz
| | - Masumeh Maleki Behzad
- Thalassemia and Hemoglobinopathy Research Center, Research Institute of Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz
| | - Saeid Shahrabi
- Department of Biochemistry and Hematology, Faculty of Medicine, Semnan University Of Medical Sciences, Semnan, Iran
| |
Collapse
|
19
|
Li G, Han N, Yang H, Wang L, Lin X, Diao S, Du J, Dong R, Wang S, Fan Z. Homeobox C10 inhibits the osteogenic differentiation potential of mesenchymal stem cells. Connect Tissue Res 2018; 59:201-211. [PMID: 28605223 DOI: 10.1080/03008207.2017.1341496] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
PURPOSE Mesenchymal stem cells (MSCs) are a reliable cell source for tissue regeneration. However, the molecular mechanisms underlying the directed differentiation of MSCs remain unclear which impedes potential clinical applications. Recent studies have discovered that Homeobox (HOX) genes are involved in the differentiation regulation of MSCs and bone formation. In this study, we investigate the HOXC10 function in the osteogenic differentiation potential of MSCs. MATERIALS AND METHODS Stem cells from apical papilla (SCAPs) and adipose-derived stem cells (ADSCs) were used in this study. Alkaline phosphatase (ALP) activity assays, ALP staining, Alizarin red staining, quantitative calcium analysis, osteogenesis-associated gene expression, and in vivo transplantation experiments were used to study osteogenic differentiation potential. RESULTS Our results showed that overexpression of HOXC10 in SCAPs inhibited ALP activity and mineralization in vitro and decreased the mRNA expression of collagen alpha-1 (I) chain, bone sialoprotein, osteocalcin, and a key transcription factor, runt-related transcription factor 2, in SCAPs. Depletion of HOXC10 promoted osteogenic differentiation in SCAPs in vitro. In addition, in vivo transplantation experiments in nude mice confirmed that SCAPs osteogenesis was triggered when HOXC10 was downregulated. Furthermore, depletion of HOXC10 also enhanced osteogenic differentiation in ADSCs. CONCLUSIONS Taken together, these results indicated that HOXC10 decreased the MSC osteogenic differentiation potential. Thus, inhibition of HOXC10 in MSCs might have the potential to improve tissue regeneration and provide insight into the mechanism underlying the directed differentiation of MSCs.
Collapse
Affiliation(s)
- Guoqing Li
- a Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction , Capital Medical University School of Stomatology , Beijing , China.,b Molecular Laboratory for Gene Therapy and Tooth Regeneration, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction , Capital Medical University School of Stomatology , Beijing , China
| | - Nannan Han
- a Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction , Capital Medical University School of Stomatology , Beijing , China.,c Department of Periodontology , Capital Medical University School of Stomatology , Beijing , China
| | - Haoqing Yang
- a Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction , Capital Medical University School of Stomatology , Beijing , China
| | - Liping Wang
- a Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction , Capital Medical University School of Stomatology , Beijing , China
| | - Xiao Lin
- a Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction , Capital Medical University School of Stomatology , Beijing , China.,d Department of Implant Dentistry , Capital Medical University School of Stomatology , Beijing , China
| | - Shu Diao
- a Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction , Capital Medical University School of Stomatology , Beijing , China.,e Department of Pediatric Dentistry , Capital Medical University School of Stomatology , Beijing , China
| | - Juan Du
- a Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction , Capital Medical University School of Stomatology , Beijing , China
| | - Rui Dong
- a Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction , Capital Medical University School of Stomatology , Beijing , China
| | - Songlin Wang
- b Molecular Laboratory for Gene Therapy and Tooth Regeneration, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction , Capital Medical University School of Stomatology , Beijing , China.,f Department of Biochemistry and Molecular Biology , Capital Medical University School of Basic Medical Sciences , Beijing , China
| | - Zhipeng Fan
- a Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction , Capital Medical University School of Stomatology , Beijing , China
| |
Collapse
|
20
|
Ehrlichia chaffeensis TRP120 Effector Targets and Recruits Host Polycomb Group Proteins for Degradation To Promote Intracellular Infection. Infect Immun 2018; 86:IAI.00845-17. [PMID: 29358333 DOI: 10.1128/iai.00845-17] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Accepted: 01/12/2018] [Indexed: 02/08/2023] Open
Abstract
Ehrlichia chaffeensis has a group of well-characterized type I secreted tandem repeat protein (TRP) effectors that have moonlighting capabilities. TRPs modulate various cellular processes, reprogram host gene transcription as nucleomodulins, function as ubiquitin ligases, and directly activate conserved host cell signaling pathways to promote E. chaffeensis infection. One TRP-interacting host target is polycomb group ring finger protein 5 (PCGF5), a member of the polycomb group (PcG) protein family and a component of the polycomb repressive complex 1 (PRC1). The current study demonstrates that during early infection, PCGF5 strongly colocalizes with TRP120 in the nucleus and later dramatically redistributes to the ehrlichial vacuole along with other PCGF isoforms. Ectopic expression and immunoprecipitation of TRP120 confirmed the interaction of TRP120 with multiple different PCGF isoforms. At 48 h postinfection, a dramatic redistribution of PCGF isoforms from the nucleus to the ehrlichial vacuole was observed, which also temporally coincided with proteasomal degradation of PCGF isoforms and TRP120 expression on the vacuole. A decrease in PRC1-mediated repressive chromatin mark and an altered transcriptional activity in PRC1-associated Hox genes primarily from HOXB and HOXC clusters were observed along with the degradation of PCGF isoforms, suggesting disruption of the PRC1 in E. chaffeensis-infected cells. Notably, small interfering RNA (siRNA)-mediated knockdown of PCGF isoforms resulted in significantly increased E. chaffeensis infection. This study demonstrates a novel strategy in which E. chaffeensis manipulates PRC complexes through interactions between TRP120 and PCGF isoforms to promote infection.
Collapse
|
21
|
Gene Co-Expression Network Analysis Unraveling Transcriptional Regulation of High-Altitude Adaptation of Tibetan Pig. PLoS One 2016; 11:e0168161. [PMID: 27936142 PMCID: PMC5148111 DOI: 10.1371/journal.pone.0168161] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Accepted: 11/27/2016] [Indexed: 02/08/2023] Open
Abstract
Tibetan pigs have survived at high altitude for millennia and they have a suite of adaptive features to tolerate the hypoxic environment. However, the molecular mechanisms underlying the regulation of hypoxia-adaptive phenotypes have not been completely elucidated. In this study, we analyzed differentially expressed genes (DEGs), biological pathways and constructed co-expression regulation networks using whole-transcriptome microarrays from lung tissues of Tibetan and Duroc pigs both at high and low altitude. A total of 3,066 DEGs were identified and this list was over-represented for the ontology terms including metabolic process, catalytic activity, and KEGG pathway including metabolic pathway and PI3K-Akt signaling pathway. The regulatory (RIF) and phenotypic (PIF) impact factor analysis identified several known and several potentially novel regulators of hypoxia adaption, including: IKBKG, KLF6 and RBPJ (RIF1), SF3B1, EFEMP1, HOXB6 and ATF6 (RIF2). These findings provide new details of the regulatory architecture of hypoxia-adaptive genes and also insight into which genes may undergo epigenetic modification for further study in the high-altitude adaptation.
Collapse
|
22
|
Sauvegarde C, Paul D, Bridoux L, Jouneau A, Degrelle S, Hue I, Rezsohazy R, Donnay I. Dynamic Pattern of HOXB9 Protein Localization during Oocyte Maturation and Early Embryonic Development in Mammals. PLoS One 2016; 11:e0165898. [PMID: 27798681 PMCID: PMC5087947 DOI: 10.1371/journal.pone.0165898] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Accepted: 10/01/2016] [Indexed: 02/06/2023] Open
Abstract
Background We previously showed that the homeodomain transcription factor HOXB9 is expressed in mammalian oocytes and early embryos. However, a systematic and exhaustive study of the localization of the HOXB9 protein, and HOX proteins in general, during mammalian early embryonic development has so far never been performed. Results The distribution of HOXB9 proteins in oocytes and the early embryo was characterized by immunofluorescence from the immature oocyte stage to the peri-gastrulation period in both the mouse and the bovine. HOXB9 was detected at all studied stages with a dynamic expression pattern. Its distribution was well conserved between the two species until the blastocyst stage and was mainly nuclear. From that stage on, trophoblastic cells always showed a strong nuclear staining, while the inner cell mass and the derived cell lines showed important dynamic variations both in staining intensity and in intra-cellular localization. Indeed, HOXB9 appeared to be progressively downregulated in epiblast cells and only reappeared after gastrulation had well progressed. The protein was also detected in the primitive endoderm and its derivatives with a distinctive presence in apical vacuoles of mouse visceral endoderm cells. Conclusions Together, these results could suggest the existence of unsuspected functions for HOXB9 during early embryonic development in mammals.
Collapse
Affiliation(s)
- Caroline Sauvegarde
- Biologie Moléculaire et Cellulaire Animale (AMCB), Institut des Sciences de la Vie (ISV), Université catholique de Louvain, Louvain-la-Neuve, Belgium
| | - Delphine Paul
- Biologie Moléculaire et Cellulaire Animale (AMCB), Institut des Sciences de la Vie (ISV), Université catholique de Louvain, Louvain-la-Neuve, Belgium
| | - Laure Bridoux
- Biologie Moléculaire et Cellulaire Animale (AMCB), Institut des Sciences de la Vie (ISV), Université catholique de Louvain, Louvain-la-Neuve, Belgium
| | - Alice Jouneau
- UMR BDR, INRA, ENVA, Université Paris Saclay, Jouy-en-Josas, France
| | - Séverine Degrelle
- Institut National de la Santé et de la Recherche Médicale (INSERM), UMR-S1139, U767, Faculté des Sciences Pharmaceutiques et Biologiques, Paris, France
- Université Paris Descartes, Sorbonne Paris Cité, Paris, France
- PremUp Foundation, Paris, France
| | - Isabelle Hue
- UMR BDR, INRA, ENVA, Université Paris Saclay, Jouy-en-Josas, France
| | - René Rezsohazy
- Biologie Moléculaire et Cellulaire Animale (AMCB), Institut des Sciences de la Vie (ISV), Université catholique de Louvain, Louvain-la-Neuve, Belgium
| | - Isabelle Donnay
- Biologie Moléculaire et Cellulaire Animale (AMCB), Institut des Sciences de la Vie (ISV), Université catholique de Louvain, Louvain-la-Neuve, Belgium
- * E-mail:
| |
Collapse
|
23
|
Yokoyama T, Nakatake M, Kuwata T, Couzinet A, Goitsuka R, Tsutsumi S, Aburatani H, Valk PJM, Delwel R, Nakamura T. MEIS1-mediated transactivation of synaptotagmin-like 1 promotes CXCL12/CXCR4 signaling and leukemogenesis. J Clin Invest 2016; 126:1664-78. [PMID: 27018596 DOI: 10.1172/jci81516] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Accepted: 02/11/2016] [Indexed: 12/12/2022] Open
Abstract
The TALE-class homeoprotein MEIS1 specifically collaborates with HOXA9 to drive myeloid leukemogenesis. Although MEIS1 alone has only a moderate effect on cell proliferation in vitro, it is essential for the development of HOXA9-induced leukemia in vivo. Here, using murine models of leukemogenesis, we have shown that MEIS1 promotes leukemic cell homing and engraftment in bone marrow and enhances cell-cell interactions and cytokine-mediated cell migration. We analyzed global DNA binding of MEIS1 in leukemic cells as well as gene expression alterations in MEIS1-deficent cells and identified synaptotagmin-like 1 (Sytl1, also known as Slp1) as the MEIS1 target gene that cooperates with Hoxa9 in leukemogenesis. Replacement of SYTL1 in MEIS1-deficent cells restored both cell migration and engraftment. Further analysis revealed that SYTL1 promotes cell migration via activation of the CXCL12/CXCR4 axis, as SYTL1 determines intracellular trafficking of CXCR4. Together, our results reveal that MEIS1, through induction of SYTL1, promotes leukemogenesis and supports leukemic cell homing and engraftment, facilitating interactions between leukemic cells and bone marrow stroma.
Collapse
|
24
|
Abraham A, Kim YS, Zhao H, Humphries K, Persons DA. Increased Engraftment of Human Short Term Repopulating Hematopoietic Cells in NOD/SCID/IL2rγnull Mice by Lentiviral Expression of NUP98-HOXA10HD. PLoS One 2016; 11:e0147059. [PMID: 26761813 PMCID: PMC4711970 DOI: 10.1371/journal.pone.0147059] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Accepted: 12/28/2015] [Indexed: 12/12/2022] Open
Abstract
Techniques to expand human hematopoietic stem cells ex-vivo could be beneficial to the fields of clinical hematopoietic stem cell transplantation and gene therapy targeted at hematopoietic stem cells. NUP98-HOXA10HD is a relatively newly discovered fusion gene that in mouse transplant experiments has been shown to increase numbers of hematopoietic stem cells. We evaluated whether this fusion gene could be used to expand engrafting human primitive CD34+ cells in an immunodeficient mouse model. Gene transfer was achieved using a lentiviral based vector. The engraftment of mobilized peripheral blood human CD34+ cells grown in culture for one week after gene transfer was evaluated 3–4 months after transplant and found to be 2–3 fold higher in the NUP98-HOXA10HD groups as compared to controls. These data suggest an expansive effect at least at the short term human repopulating cell level. Further evaluation in long term repopulating models and investment in a NUP98-HOXA10HD protein seems worthy of consideration. Additionally, the results here provide strong impetus to utilize NUP98-HOXA10HD as a tool to search for underlying genes and pathways involved in hematopoietic stem cell expansion that can be enhanced and have an even more potent expansive effect.
Collapse
Affiliation(s)
- Allistair Abraham
- Division of Experimental Hematology, St Jude Children's Research Hospital, Memphis, Tennessee, United States of America
- * E-mail:
| | - Yoon-Sang Kim
- Division of Experimental Hematology, St Jude Children's Research Hospital, Memphis, Tennessee, United States of America
| | - Huifen Zhao
- Division of Experimental Hematology, St Jude Children's Research Hospital, Memphis, Tennessee, United States of America
| | - Keith Humphries
- Terry Fox Laboratory, British Columbia Cancer Agency, Vancouver, British Columbia, V5Z 1L3, Canada
| | - Derek A. Persons
- Division of Experimental Hematology, St Jude Children's Research Hospital, Memphis, Tennessee, United States of America
| |
Collapse
|
25
|
Platais C, Hakami F, Darda L, Lambert DW, Morgan R, Hunter KD. The role of HOX genes in head and neck squamous cell carcinoma. J Oral Pathol Med 2015; 45:239-47. [PMID: 26661059 DOI: 10.1111/jop.12388] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/31/2015] [Indexed: 12/13/2022]
Abstract
Recent decades have witnessed the publication of numerous studies reporting alterations in the genome and transcriptome of head and neck squamous cell carcinoma (HNSCC). Currently, the utilisation of these alterations as biomarkers and targets for therapy is limited and new, useful molecular characteristics are being sought. Many of the published HNSCC gene expression profiles demonstrate alterations in the expression of HOX genes. These are a family of Homeobox-containing genes which are involved in developmental patterning and morphogenesis in the embryo, and which are often aberrantly expressed in cancer. The 39 HOX genes found in the human genome are arranged in four paralogous groups at different chromosomal loci. These control a wide range of cellular processes, including proliferation and migration, which are relevant in the context of cancer development. In this review article, we will outline the biology of HOX genes in relation to cancer and summarise the accumulating evidence for their role in the development of HNSCC and the possibility that they could be a therapeutic target in this malignancy. We will also identify areas where our current understanding is weak to focus future work and appraise the ongoing strategies for pharmacological intervention.
Collapse
Affiliation(s)
- Christopher Platais
- Unit of Oral and Maxillofacial Pathology, School of Clinical Dentistry, University of Sheffield, Sheffield, UK
| | - Fahad Hakami
- Unit of Oral and Maxillofacial Pathology, School of Clinical Dentistry, University of Sheffield, Sheffield, UK.,Department of Pathology and Laboratory Medicine, King Abdulaziz Medical City-WR, Jeddah, Saudi Arabia
| | - Lav Darda
- Unit of Oral and Maxillofacial Pathology, School of Clinical Dentistry, University of Sheffield, Sheffield, UK
| | - Daniel W Lambert
- Unit of Oral and Maxillofacial Pathology, School of Clinical Dentistry, University of Sheffield, Sheffield, UK
| | - Richard Morgan
- Institute of Cancer Therapeutics, University of Bradford, Bradford, UK
| | - Keith D Hunter
- Unit of Oral and Maxillofacial Pathology, School of Clinical Dentistry, University of Sheffield, Sheffield, UK.,Department of Oral Pathology and Biology, University of Pretoria, Pretoria, South Africa
| |
Collapse
|
26
|
Hsu CH, Nguyen C, Yan C, Ries RE, Chen QR, Hu Y, Ostronoff F, Stirewalt DL, Komatsoulis G, Levy S, Meerzaman D, Meshinchi S. Transcriptome Profiling of Pediatric Core Binding Factor AML. PLoS One 2015; 10:e0138782. [PMID: 26397705 PMCID: PMC4580636 DOI: 10.1371/journal.pone.0138782] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Accepted: 09/03/2015] [Indexed: 11/29/2022] Open
Abstract
The t(8;21) and Inv(16) translocations disrupt the normal function of core binding factors alpha (CBFA) and beta (CBFB), respectively. These translocations represent two of the most common genomic abnormalities in acute myeloid leukemia (AML) patients, occurring in approximately 25% pediatric and 15% of adult with this malignancy. Both translocations are associated with favorable clinical outcomes after intensive chemotherapy, and given the perceived mechanistic similarities, patients with these translocations are frequently referred to as having CBF-AML. It remains uncertain as to whether, collectively, these translocations are mechanistically the same or impact different pathways in subtle ways that have both biological and clinical significance. Therefore, we used transcriptome sequencing (RNA-seq) to investigate the similarities and differences in genes and pathways between these subtypes of pediatric AMLs. Diagnostic RNA from patients with t(8;21) (N = 17), Inv(16) (N = 14), and normal karyotype (NK, N = 33) were subjected to RNA-seq. Analyses compared the transcriptomes across these three cytogenetic subtypes, using the NK cohort as the control. A total of 1291 genes in t(8;21) and 474 genes in Inv(16) were differentially expressed relative to the NK controls, with 198 genes differentially expressed in both subtypes. The majority of these genes (175/198; binomial test p-value < 10−30) are consistent in expression changes among the two subtypes suggesting the expression profiles are more similar between the CBF cohorts than in the NK cohort. Our analysis also revealed alternative splicing events (ASEs) differentially expressed across subtypes, with 337 t(8;21)-specific and 407 Inv(16)-specific ASEs detected, the majority of which were acetylated proteins (p = 1.5x10-51 and p = 1.8x10-54 for the two subsets). In addition to known fusions, we identified and verified 16 de novo fusions in 43 patients, including three fusions involving NUP98 in six patients. Clustering of differentially expressed genes indicated that the homeobox (HOX) gene family, including two transcription factors (MEIS1 and NKX2-3) were down-regulated in CBF compared to NK samples. This finding supports existing data that the dysregulation of HOX genes play a central role in biology CBF-AML hematopoiesis. These data provide comprehensive transcriptome profiling of CBF-AML and delineate genes and pathways that are differentially expressed, providing insights into the shared biology as well as differences in the two CBF subsets.
Collapse
MESH Headings
- Acetylation
- Alternative Splicing
- Binding Sites
- Chromosome Inversion
- Chromosomes, Human, Pair 16
- Chromosomes, Human, Pair 21
- Chromosomes, Human, Pair 8
- Core Binding Factor Alpha 2 Subunit/metabolism
- Core Binding Factor alpha Subunits/metabolism
- Core Binding Factor beta Subunit/metabolism
- Gene Expression Profiling
- Gene Regulatory Networks
- Homeodomain Proteins/metabolism
- Humans
- Karyotyping
- Leukemia, Myeloid, Acute/genetics
- Leukemia, Myeloid, Acute/pathology
- Myeloid Ecotropic Viral Integration Site 1 Protein
- Neoplasm Proteins/metabolism
- Principal Component Analysis
- Protein Binding
- Sequence Analysis, RNA
- Transcription Factors/metabolism
- Transcriptome
- Translocation, Genetic
Collapse
Affiliation(s)
- Chih-Hao Hsu
- Center for Biomedical Informatics and Information Technology, National Cancer Institute, Rockville, MD, 20850, United States of America
| | - Cu Nguyen
- Center for Biomedical Informatics and Information Technology, National Cancer Institute, Rockville, MD, 20850, United States of America
| | - Chunhua Yan
- Center for Biomedical Informatics and Information Technology, National Cancer Institute, Rockville, MD, 20850, United States of America
| | - Rhonda E. Ries
- Fred Hutchinson Cancer Research Center, Seattle, WA, United States of America
| | - Qing-Rong Chen
- Center for Biomedical Informatics and Information Technology, National Cancer Institute, Rockville, MD, 20850, United States of America
| | - Ying Hu
- Center for Biomedical Informatics and Information Technology, National Cancer Institute, Rockville, MD, 20850, United States of America
| | - Fabiana Ostronoff
- Fred Hutchinson Cancer Research Center, Seattle, WA, United States of America
| | - Derek L. Stirewalt
- Fred Hutchinson Cancer Research Center, Seattle, WA, United States of America
| | - George Komatsoulis
- Center for Biomedical Informatics and Information Technology, National Cancer Institute, Rockville, MD, 20850, United States of America
| | - Shawn Levy
- Hudson Alpha Institute for Biotechnology, Huntsville, AL, United States of America
| | - Daoud Meerzaman
- Center for Biomedical Informatics and Information Technology, National Cancer Institute, Rockville, MD, 20850, United States of America
| | - Soheil Meshinchi
- Fred Hutchinson Cancer Research Center, Seattle, WA, United States of America
- * E-mail:
| |
Collapse
|
27
|
Sharma M, Rawal L, Panwar D, Sehgal N, Ali S. Differential expression of Homeobox C11 protein in water buffalo Bubalus bubalis and its putative 3D structure. BMC Genomics 2014; 15:638. [PMID: 25080327 PMCID: PMC4139611 DOI: 10.1186/1471-2164-15-638] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Accepted: 07/17/2014] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The Homeobox (Hox) family complex contains 39 genes, clustered into four groups (A-D) all expressing in sequential manner. The HOX proteins are transcriptional factors involved in regulation of pattern formation of the anterio-posterior body axis across the species. Most of the Hox family genes have been studied with respect to their organization and expression during the embryonic stages. However, expression pattern of Homeobox C11 (Hoxc11) gene in the 5' region, particularly in higher mammals remains largely unexplored. RESULTS We cloned and expressed Homeobox C11 (Hoxc11) gene from water buffalo Bubalus bubalis. The recombinant HOXC11 protein expressed as inclusion bodies was solubilized in Tris buffer (10 mM, pH-6.5) and purified using Ni-NTA affinity column. The purity and molecular weight of HOXC11 protein (~33 kDa) were confirmed by SDS-PAGE and western blot analysis. Employing immunohistochemistry approach, we localized HOXC11 protein in the nuclei across the tissues of buffalo. Western blot analysis showed highest expression of HOXC11 protein in kidney and lung although its possible renal and respiratory roles are not yet established. Electrophoretic mobility shift assay (EMSA) demonstrated the specific binding of HOXC11 protein with the promoter element, CE-LPH1 of lactase-phlorizin hydrolase (LPH) gene showing reduced mobility of the protein-DNA complex, corroborating with earlier report on the possible role of this protein in intestinal functions. In silico analysis of HOXC11 showed predominance of α helices and presence of six conserved domains. We deduced the putative 3D structure of HOXC11 protein and fifteen possible DNA interacting residues within the homeodomain. CONCLUSIONS Present study augments our understanding on the specific expression of HOXC11 protein in kidney and lung in water buffalo. The fifteen DNA interacting residues reported herein provide an opportunity to establish much broader structural and functional perspectives of HOXC11 protein in the context of genome analysis in general and animal biotechnology in particular.
Collapse
Affiliation(s)
| | | | | | | | - Sher Ali
- Molecular Genetics Laboratory, National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi 110067, India.
| |
Collapse
|
28
|
Hoshino Y, Hayashida T, Hirata A, Takahashi H, Chiba N, Ohmura M, Wakui M, Jinno H, Hasegawa H, Maheswaran S, Suematsu M, Kitagawa Y. Bevacizumab terminates homeobox B9-induced tumor proliferation by silencing microenvironmental communication. Mol Cancer 2014; 13:102. [PMID: 24885802 PMCID: PMC4023179 DOI: 10.1186/1476-4598-13-102] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2013] [Accepted: 05/01/2014] [Indexed: 12/20/2022] Open
Abstract
Background Homeobox B9 (HOXB9), a transcriptional factor, regulates developmental processes and tumor progression and has recently been recognized as one of important transcriptional factors related to angiogenesis. This study aimed to investigate the role of HOXB9 in tumorigenesis and angiogenesis. Methods We examined the expression of HOXB9 in colorectal cancer using qPCR and in situ hybridization. We also examined the effect of HOXB9 overexpression in colorectal cancer using a proliferation assay, ELISA, a multiplex assay, and xenograft models. The clinical significance of HOXB9 was statistically evaluated in resected specimens. Results HOXB9 was expressed in colorectal cancer specimens. HOXB9 induced angiogenesis and tumor proliferation in vitro, which resulted in high tumorigenicity in vivo and poor overall survival. Bevacizumab, an anti-vascular endothelial growth factor (VEGF) antibody, remarkably suppressed tumor proliferation by inhibiting angiogenesis in HOXB9-overexpressing xenografts, and it improved overall survival and provided prolonged progression-free survival in HOXB9-overexpressing patients. A comprehensive multiplex assay of the supernatant of cancer cells co-cultured with human vascular endothelial cells and fibroblasts indicated significantly higher interleukin-6 (IL6) levels than those in the supernatant of monocultured cells. HOXB9 overexpression in clinical specimens was significantly correlated with increased IL6 expression. An IL6-neutralizing antibody inhibited VEGF secretion and tumor proliferation in the co-culture system. Conclusions HOXB9 promotes the secretion of angiogenic factors, including VEGF, to induce tumor proliferation through microenvironmental production of cytokines including IL6 signaling. Moreover, silencing of VEGF or IL6 terminates cytokine release in tumor microenvironment. Thus, HOXB9 and IL6 may be potential biomarkers for bevacizumab treatment.
Collapse
Affiliation(s)
| | - Tetsu Hayashida
- Department of Surgery, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
29
|
Torresan C, Oliveira MMC, Pereira SRF, Ribeiro EMSF, Marian C, Gusev Y, Lima RS, Urban CA, Berg PE, Haddad BR, Cavalli IJ, Cavalli LR. Increased copy number of the DLX4 homeobox gene in breast axillary lymph node metastasis. Cancer Genet 2014; 207:177-87. [PMID: 24947980 DOI: 10.1016/j.cancergen.2014.04.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Revised: 04/08/2014] [Accepted: 04/20/2014] [Indexed: 10/25/2022]
Abstract
DLX4 is a homeobox gene strongly implicated in breast tumor progression and invasion. Our main objective was to determine the DLX4 copy number status in sentinel lymph node (SLN) metastasis to assess its involvement in the initial stages of the axillary metastatic process. A total of 37 paired samples of SLN metastasis and primary breast tumors (PBT) were evaluated by fluorescence in situ hybridization, quantitative polymerase chain reaction and array comparative genomic hybridization assays. DLX4 increased copy number was observed in 21.6% of the PBT and 24.3% of the SLN metastasis; regression analysis demonstrated that the DLX4 alterations observed in the SLN metastasis were dependent on the ones in the PBT, indicating that they occur in the primary tumor cell populations and are maintained in the early axillary metastatic site. In addition, regression analysis demonstrated that DLX4 alterations (and other DLX and HOXB family members) occurred independently of the ones in the HER2/NEU gene, the main amplification driver on the 17q region. Additional studies evaluating DLX4 copy number in non-SLN axillary lymph nodes and/or distant breast cancer metastasis are necessary to determine if these alterations are carried on and maintained during more advanced stages of tumor progression and if could be used as a predictive marker for axillary involvement.
Collapse
Affiliation(s)
- Clarissa Torresan
- Department of Genetics, Federal University of Paraná, Curitiba, PR, Brazil
| | | | - Silma R F Pereira
- Department of Biology, Federal University of Maranhão, São Luis, MA, Brazil
| | | | - Catalin Marian
- Department of Biochemistry, University of Medicine and Pharmacy, Timisoara, Romania
| | - Yuriy Gusev
- Innovation Center for Biomedical Informatics, Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC, USA
| | - Rubens S Lima
- Breast Unit, Hospital Nossa Senhora das Graças, Curitiba, PR, Brazil
| | - Cicero A Urban
- Breast Unit, Hospital Nossa Senhora das Graças, Curitiba, PR, Brazil; Positivo University, Curitiba, PR, Brazil
| | - Patricia E Berg
- Department of Biochemistry and Molecular Medicine, George Washington University Medical Center, Washington, DC, USA
| | - Bassem R Haddad
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC, USA
| | - Iglenir J Cavalli
- Department of Genetics, Federal University of Paraná, Curitiba, PR, Brazil
| | - Luciane R Cavalli
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC, USA.
| |
Collapse
|
30
|
Tong N, Xu B, Shi D, Du M, Li X, Sheng X, Wang M, Chu H, Fang Y, Li J, Wu D, Zhang Z. Hsa-miR-196a2 polymorphism increases the risk of acute lymphoblastic leukemia in Chinese children. Mutat Res 2014; 759:16-21. [PMID: 24291415 DOI: 10.1016/j.mrfmmm.2013.11.004] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2013] [Revised: 10/30/2013] [Accepted: 11/20/2013] [Indexed: 06/02/2023]
Abstract
Acute lymphoblastic leukemia (ALL) is a major cause of mortality and morbidity in childhood, and the causes of ALL are not completely understood. microRNAs (miRNAs) regulate various biological processes including organ development, cell growth regulation, cell differentiation, apoptosis, and tumorigenesis. We performed a case-control study with 570 childhood ALL cases and 673 cancer-free controls to investigate the association between hsa-miR-196a2 rs11614913 T>C polymorphism and ALL risk. The bioinformatics was used to estimate the potential target of hsa-miR-196a2. In the present study, the hsa-miR-196a2 variant TC heterozygote, and CC/TC genotypes were found to be associated with a significantly increased childhood ALL risk, compared with the TT wild-type homozygote (adjusted OR=1.50, 95% CI=1.15-1.95 for TC and OR=1.40, 95% CI=1.09-1.79 for CC/TC). Further, the difference was pronounced in younger (≤6) subjects or parental non-drinker. The significance of the increased risk is more obvious than the higher treatment branch. Additionally, we found that the rs11614913 TC genotype can increase B-phenotype ALL risk (OR=1.37, 95% CI=1.07-1.76). Finally, combination of three bioinformatics approaches revealed that HOXC8 may be the target gene of hsa-miR-196a2. Taken together, our finding suggested that hsa-miR-196a2 rs11614913 T>C may increase the risk of childhood ALL. Large studies with the function of hsa-miR-196a2 are needed in the further study.
Collapse
Affiliation(s)
- Na Tong
- Department of Environmental Genomics, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Cancer Center, Nanjing Medical University, Nanjing, China; Department of Genetic Toxicology, The Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Bin Xu
- Surgical Research Center, Medical School, Southeast University, Nanjing, China
| | - Danni Shi
- Department of Environmental Genomics, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Cancer Center, Nanjing Medical University, Nanjing, China; Department of Genetic Toxicology, The Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Mulong Du
- Department of Environmental Genomics, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Cancer Center, Nanjing Medical University, Nanjing, China; Department of Genetic Toxicology, The Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Xin Li
- Department of Environmental Genomics, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Cancer Center, Nanjing Medical University, Nanjing, China; Department of Genetic Toxicology, The Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Xiaojing Sheng
- Department of Environmental Genomics, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Cancer Center, Nanjing Medical University, Nanjing, China; Department of Genetic Toxicology, The Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Meilin Wang
- Department of Environmental Genomics, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Cancer Center, Nanjing Medical University, Nanjing, China; Department of Genetic Toxicology, The Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Haiyan Chu
- Department of Environmental Genomics, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Cancer Center, Nanjing Medical University, Nanjing, China; Department of Genetic Toxicology, The Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Yongjun Fang
- Department of Hematology and Oncology, The Affiliated Nanjing Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Jie Li
- Department of Hematology and Oncology, Soochow Children's Hospital Affiliated to Soochow University, Suzhou, China
| | - Dongmei Wu
- Department of Environmental Genomics, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Cancer Center, Nanjing Medical University, Nanjing, China; Department of Genetic Toxicology, The Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Zhengdong Zhang
- Department of Environmental Genomics, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Cancer Center, Nanjing Medical University, Nanjing, China; Department of Genetic Toxicology, The Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, China.
| |
Collapse
|
31
|
Bruderer M, Alini M, Stoddart MJ. Role of HOXA9 and VEZF1 in endothelial biology. J Vasc Res 2013; 50:265-78. [PMID: 23921720 DOI: 10.1159/000353287] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2012] [Accepted: 03/15/2013] [Indexed: 11/19/2022] Open
Abstract
Proper development of the vascular system as one of the earliest and most critical steps during vertebrate embryogenesis is ensured by the exact spatial and temporal control of gene expression in cells forming the vessel network. Whereas the regulation of vascular system development is well elucidated on the level of ligand-receptor signaling, the processes on the transcriptional level are much less understood. As the signaling mechanisms in embryogenesis and pathological conditions are similar, the study of embryonic blood vessel development is of great interest for the treatment of cardiovascular diseases and cancer. This review discusses two transcription factors, HOXA9 and VEZF1, which are relevant for endothelial biology but are excluded in the bulk of transcription factor references discussing endothelial biology. To our knowledge, there is no comprehensive overview of these two transcription factors available to date. Here, we summarize the current knowledge of human HOXA9 and VEZF1 biology and function, we detail their target genes and roles in endothelial biology and propose that HOXA9 and VEZF1 also deserve consideration as relevant transcriptional regulators of endothelial biology. Due to their broad role in multiple aspects of endothelial biology, they might potentially become interesting targets for therapeutic manipulation of pathological blood vessel growth.
Collapse
Affiliation(s)
- Marco Bruderer
- Musculoskeletal Regeneration Program, AO Research Institute Davos, Davos, Switzerland
| | | | | |
Collapse
|
32
|
Koh CP, Wang CQ, Ng CEL, Ito Y, Araki M, Tergaonkar V, Huang G, Osato M. RUNX1 meets MLL: epigenetic regulation of hematopoiesis by two leukemia genes. Leukemia 2013; 27:1793-802. [PMID: 23817177 DOI: 10.1038/leu.2013.200] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2013] [Revised: 06/26/2013] [Accepted: 06/26/2013] [Indexed: 01/05/2023]
Abstract
A broad range of human leukemias carries RUNX1 and MLL genetic alterations. Despite such widespread involvements, the relationship between RUNX1 and MLL has never been appreciated. Recently, we showed that RUNX1 physically and functionally interacts with MLL, thereby regulating the epigenetic status of critical cis-regulatory elements for hematopoietic genes. This newly unveiled interaction between the two most prevalent leukemia genes has solved a long-standing conundrum: leukemia-associated RUNX1 N-terminal point mutants that exhibit no obvious functional abnormalities in classical assays for the assessment of transcriptional activities. These mutants turned out to be defective in MLL interaction and subsequent epigenetic modifications that can be examined by the histone-modification status of cis-regulatory elements in the target genes. RUNX1/MLL binding confirms the importance of RUNX1 function as an epigenetic regulator. Recent studies employing next-generation sequencing on human hematological malignancies identified a plethora of mutations in epigenetic regulator genes. These new findings would enhance our understanding on the mechanistic basis for leukemia development and may provide a novel direction for therapeutic applications. This review summarizes the current knowledge about the epigenetic regulation of normal and malignant hematopoiesis by RUNX1 and MLL.
Collapse
Affiliation(s)
- C P Koh
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | | | | | | | | | | | | | | |
Collapse
|
33
|
Kinnaird JH, Weir W, Durrani Z, Pillai SS, Baird M, Shiels BR. A Bovine Lymphosarcoma Cell Line Infected with Theileria annulata Exhibits an Irreversible Reconfiguration of Host Cell Gene Expression. PLoS One 2013; 8:e66833. [PMID: 23840536 PMCID: PMC3694138 DOI: 10.1371/journal.pone.0066833] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2013] [Accepted: 05/13/2013] [Indexed: 01/20/2023] Open
Abstract
Theileria annulata, an intracellular parasite of bovine lymphoid cells, induces substantial phenotypic alterations to its host cell including continuous proliferation, cytoskeletal changes and resistance to apoptosis. While parasite induced modulation of host cell signal transduction pathways and NFκB activation are established, there remains considerable speculation on the complexities of the parasite directed control mechanisms that govern these radical changes to the host cell. Our objectives in this study were to provide a comprehensive analysis of the global changes to host cell gene expression with emphasis on those that result from direct intervention by the parasite. By using comparative microarray analysis of an uninfected bovine cell line and its Theileria infected counterpart, in conjunction with use of the specific parasitacidal agent, buparvaquone, we have identified a large number of host cell gene expression changes that result from parasite infection. Our results indicate that the viable parasite can irreversibly modify the transformed phenotype of a bovine cell line. Fifty percent of genes with altered expression failed to show a reversible response to parasite death, a possible contributing factor to initiation of host cell apoptosis. The genes that did show an early predicted response to loss of parasite viability highlighted a sub-group of genes that are likely to be under direct control by parasite infection. Network and pathway analysis demonstrated that this sub-group is significantly enriched for genes involved in regulation of chromatin modification and gene expression. The results provide evidence that the Theileria parasite has the regulatory capacity to generate widespread change to host cell gene expression in a complex and largely irreversible manner.
Collapse
Affiliation(s)
- Jane H. Kinnaird
- Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, United Kingdom
| | - William Weir
- Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, United Kingdom
| | - Zeeshan Durrani
- Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, United Kingdom
| | - Sreerekha S. Pillai
- Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, United Kingdom
- Institute of Cell Biology, School of Biological Sciences, University of Edinburgh, Edinburgh, United Kingdom
| | - Margaret Baird
- Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, United Kingdom
| | - Brian R. Shiels
- Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, United Kingdom
- * E-mail:
| |
Collapse
|
34
|
Picchi J, Trombi L, Spugnesi L, Barachini S, Maroni G, Brodano GB, Boriani S, Valtieri M, Petrini M, Magli MC. HOX and TALE signatures specify human stromal stem cell populations from different sources. J Cell Physiol 2013; 228:879-89. [PMID: 23018864 DOI: 10.1002/jcp.24239] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2012] [Accepted: 09/24/2012] [Indexed: 12/30/2022]
Abstract
Human stromal stem cell populations reside in different tissues and anatomical sites, however a critical question related to their efficient use in regenerative medicine is whether they exhibit equivalent biological properties. Here, we compared cellular and molecular characteristics of stromal stem cells derived from the bone marrow, at different body sites (iliac crest, sternum, and vertebrae) and other tissues (dental pulp and colon). In particular, we investigated whether homeobox genes of the HOX and TALE subfamilies might provide suitable markers to identify distinct stromal cell populations, as HOX proteins control cell positional identity and, together with their co-factors TALE, are involved in orchestrating differentiation of adult tissues. Our results show that stromal populations from different sources, although immunophenotypically similar, display distinct HOX and TALE signatures, as well as different growth and differentiation abilities. Stromal stem cells from different tissues are characterized by specific HOX profiles, differing in the number and type of active genes, as well as in their level of expression. Conversely, bone marrow-derived cell populations can be essentially distinguished for the expression levels of specific HOX members, strongly suggesting that quantitative differences in HOX activity may be crucial. Taken together, our data indicate that the HOX and TALE profiles provide positional, embryological and hierarchical identity of human stromal stem cells. Furthermore, our data suggest that cell populations derived from different body sites may not represent equivalent cell sources for cell-based therapeutical strategies for regeneration and repair of specific tissues.
Collapse
Affiliation(s)
- Jacopo Picchi
- Institute of Biomedical Technologies, National Research Council, Pisa, Italy
| | | | | | | | | | | | | | | | | | | |
Collapse
|
35
|
Bauersachs S, Wolf E. Transcriptome analyses of bovine, porcine and equine endometrium during the pre-implantation phase. Anim Reprod Sci 2012; 134:84-94. [PMID: 22917876 DOI: 10.1016/j.anireprosci.2012.08.015] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Different reproductive strategies evolved in various mammalian groups to achieve recognition, establishment and maintenance of pregnancy. The complexity of these processes is reflected by a high incidence of embryonic loss during this critical period in many mammalian species. Besides studies in mice and humans a number of transcriptome studies of endometrial tissue samples and also of early embryos have been performed during the pre-implantation phase in cattle, swine and horse to identify genes associated with embryo-maternal interaction. Results of these studies are reviewed and compared between species. The comparison of data sets from different species indicated a general role of interferons for the establishment of pregnancy. In addition to many species-specific changes in gene expression, which may reflect different pregnancy recognition signals and mechanisms of embryo implantation, a number of transcriptome changes were found to be similar across species. These genes may have conserved roles during the establishment of pregnancy in mammals and reflect basic principles of mammalian reproduction. The relevance and strategies, but also the challenges of cross-species comparisons of gene expression data are discussed.
Collapse
Affiliation(s)
- Stefan Bauersachs
- Molecular Animal Breeding & Biotechnology and Laboratory for Functional Genome Analysis (LAFUGA), Gene Center, Ludwig-Maximilians-Universität München, Feodor-Lynen-Str. 25, 81377 Munich, Germany.
| | | |
Collapse
|
36
|
Bauersachs S, Ulbrich SE, Reichenbach HD, Reichenbach M, Büttner M, Meyer HH, Spencer TE, Minten M, Sax G, Winter G, Wolf E. Comparison of the Effects of Early Pregnancy with Human Interferon, Alpha 2 (IFNA2), on Gene Expression in Bovine Endometrium1. Biol Reprod 2012; 86:46. [DOI: 10.1095/biolreprod.111.094771] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
|
37
|
Tanaka Y, Kawahashi K, Katagiri ZI, Nakayama Y, Mahajan M, Kioussis D. Dual function of histone H3 lysine 36 methyltransferase ASH1 in regulation of Hox gene expression. PLoS One 2011; 6:e28171. [PMID: 22140534 PMCID: PMC3225378 DOI: 10.1371/journal.pone.0028171] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2011] [Accepted: 11/02/2011] [Indexed: 11/24/2022] Open
Abstract
Hox genes play important roles in haematopoietic development in mammals. ASH1 is a member of the trithorax group (trxG) that is required for proper expression of Hox genes and is preferentially expressed in haematopoietic stem cells. We have recently reported that ASH1 methylates histone H3 at lysine 36 (K36) but its biological function has remained elusive. Here we show that ASH1 regulates Hox gene expression positively and negatively in a leukemic cell line K562 and is required for myelomonocytic differentiation of murine haematopoietic stem cells. ASH1 binds to endogenous Hox loci in K562 cells and its knockdown causes reduced expression of Hox genes. In addition, ASH1 and MLL1 induce more than 100-fold activation of Hox promoters in HeLa cells if expressed simultaneously but not individually. Notably, ASH1 harbouring a point mutation that kills methyltransferase activity is more efficient than wild type ASH1 in Hox gene activation, indicating that K36 methylation is not a prerequisite for Hox gene expression. Moreover, tethering wild type or catalytically inactive methyltransferase domain of ASH1 to a heterologous promoter causes downregulation or upregulation, respectively, of transcription, supporting a hypothesis that K36 methylation imparts repression. Knockdown of ASH1 in K562 cells in vitro causes increased expression of ε-globin gene and reduced expression of myelomonocytic markers GPIIb and GPIIIa, whereas knockdown of ASH1 in murine haematopoietic stem cells in vivo results in decreased number of macrophages and granulocytes, a phenotype similar to that induced by loss of mll1 function. Taken together, our data suggest that ASH1 and MLL1 synergize in activation of Hox genes and thereby regulate development of myelomonocytic lineages from haematopoietic stem cells.
Collapse
Affiliation(s)
- Yujiro Tanaka
- Genome Structure and Regulation, School of Biomedical Science and Biochemical Genetics, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan.
| | | | | | | | | | | |
Collapse
|
38
|
Abstract
Recent studies identified an interaction between the Polymerase Associated Factor complex (PAFc) and Mixed Lineage Leukemia (MLL), including MLL-rearranged oncoproteins. This interaction is critical for MLL transcriptional activity and MLL-rearranged leukemogenesis. Here, we discuss the potential molecular role of the PAFc in transcriptional dysregulation of MLL target genes and the interplay between PAFc and MLL-rearranged oncoproteins in leukemogenesis.
Collapse
Affiliation(s)
- Jiaying Tan
- Department of Pathology, University of Michigan Medical School, 5240 Medical Sciences 1, 1301 Catherine Avenue, Ann Arbor MI 48109, USA
| | | | | |
Collapse
|
39
|
Paul D, Bridoux L, Rezsöhazy R, Donnay I. HOX genes are expressed in bovine and mouse oocytes and early embryos. Mol Reprod Dev 2011; 78:436-49. [PMID: 21567651 DOI: 10.1002/mrd.21321] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2011] [Accepted: 04/11/2011] [Indexed: 11/06/2022]
Abstract
HOX proteins are transcription factors that play a major role in patterning the body axis of vertebrates from the gastrulation stage. While nothing has been reported so far about their roles at earlier stages, there is evidence that some HOX genes are expressed before gastrulation. The objective of this work was to study the pattern of expression of several HOX genes during oocyte maturation and early embryonic development up to the blastocyst stage. Using nested PCR, HOXD1, HOXA3, HOXD4, HOXB7, HOXB9, and HOXC9 transcripts were detected in bovine oocytes and early embryos at various frequencies depending on the stage of development. Quantitative PCR was performed on bovine oocytes and early embryos: relative expression of HOXD1, HOXA3, and HOXC9 decreased sharply after the 5-8 cell stage. HOXB9 relative expression increased between the oocyte and the morula stage. All transcripts seemed to be of maternal origin before the maternal to embryonic transition, as demonstrated by blocking transcription with α-amanitin. Reverse transcription was performed with either hexamers or oligo-dT, allowing for the determination that HOXC9 transcripts were slightly deadenylated during oocyte maturation; HOXD1, HOXA3, and HOXB9 transcripts were not, indicating that they could be translated. Hoxd1, Hoxa3, Hoxb9, and Hoxc9 expression was also detected in mouse oocytes and early embryos. A similar pattern of expression was found in the two species. In conclusion, mammalian HOX genes might be implicated in the control of oocyte maturation, the maternal-to-embryonic transition or the first steps of embryo differentiation.
Collapse
Affiliation(s)
- Delphine Paul
- Université Catholique de Louvain, Institut des Sciences de la Vie, Embryologie Moléculaire et Cellulaire Animale, Louvain-la-Neuve, Belgium
| | | | | | | |
Collapse
|
40
|
Quéré R, Andradottir S, Brun ACM, Zubarev RA, Karlsson G, Olsson K, Magnusson M, Cammenga J, Karlsson S. High levels of the adhesion molecule CD44 on leukemic cells generate acute myeloid leukemia relapse after withdrawal of the initial transforming event. Leukemia 2010; 25:515-26. [PMID: 21116281 PMCID: PMC3072510 DOI: 10.1038/leu.2010.281] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Multiple genetic hits are detected in patients with acute myeloid leukemia (AML). To investigate this further, we developed a tetracycline-inducible mouse model of AML, in which the initial transforming event, overexpression of HOXA10, can be eliminated. Continuous overexpression of HOXA10 is required to generate AML in primary recipient mice, but is not essential for maintenance of the leukemia. Transplantation of AML to secondary recipients showed that in established leukemias, ∼80% of the leukemia-initiating cells (LICs) in bone marrow stopped proliferating upon withdrawal of HOXA10 overexpression. However, the population of LICs in primary recipients is heterogeneous, as ∼20% of the LICs induce leukemia in secondary recipients despite elimination of HOXA10-induced overexpression. Intrinsic genetic activation of several proto-oncogenes was observed in leukemic cells resistant to inactivation of the initial transformation event. Interestingly, high levels of the adhesion molecule CD44 on leukemic cells are essential to generate leukemia after removal of the primary event. This suggests that extrinsic niche-dependent factors are also involved in the host-dependent outgrowth of leukemias after withdrawal of HOXA10 overexpression event that initiates the leukemia.
Collapse
Affiliation(s)
- R Quéré
- Molecular Medicine and Gene Therapy, Division of Molecular Medicine and Gene Therapy, Lund Strategic Center for Stem Cell Biology and Cell Therapy, Lund University Hospital, Lund, Sweden
| | | | | | | | | | | | | | | | | |
Collapse
|
41
|
Axlund SD, Lambert JR, Nordeen SK. HOXC8 inhibits androgen receptor signaling in human prostate cancer cells by inhibiting SRC-3 recruitment to direct androgen target genes. Mol Cancer Res 2010; 8:1643-55. [PMID: 21047772 DOI: 10.1158/1541-7786.mcr-10-0111] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
HOX (homeobox) genes encode homeodomain-containing transcription factors critical to development, differentiation, and homeostasis. Their dysregulation has been implicated in a variety of cancers. Previously, we showed that a subset of genes of the HOXC cluster is upregulated in primary prostate tumors, lymph node metastases, and malignant prostate cell lines. In the present study, we show that HOXC8 inhibits androgen receptor (AR)-mediated gene induction in LNCaP prostate cancer cells and HPr-1 AR, a nontumorigenic prostate epithelial cell line. Mechanistically, HOXC8 blocks the AR-dependent recruitment of the steroid receptor coactivators steroid receptor coactivator-3 (SRC-3), and CREB binding protein to the androgen-regulated prostate-specific antigen gene enhancer and inhibits histone acetylation of androgen-regulated genes. Inhibition of androgen induction by HOXC8 is reversed upon expression of SRC-3, a member of the SRC/p160 steroid receptor cofactor family. Coimmunoprecipitation studies show that HOXC8 expression inhibits the hormone-dependent interaction of AR and SRC-3. Finally, HOXC8 expression increases invasion in HPr-1 AR nontumorigenic cells. These data suggest a complex role for HOXC8 in prostate cancer, promoting invasiveness while inhibiting AR-mediated gene induction at androgen response element-regulated genes associated with differentiated function of the prostate. A greater understanding of HOXC8 actions in the prostate and its interactions with androgen signaling pathways may elucidate mechanisms driving the onset and progression of prostate cancer.
Collapse
Affiliation(s)
- Sunshine Daddario Axlund
- Department of Pathology, University of Colorado Denver, Anschutz Medical Campus, 12801 E 17th Ave., Aurora, CO 80045, USA
| | | | | |
Collapse
|
42
|
Lebert-Ghali CE, Fournier M, Dickson GJ, Thompson A, Sauvageau G, Bijl JJ. HoxA cluster is haploinsufficient for activity of hematopoietic stem and progenitor cells. Exp Hematol 2010; 38:1074-1086.e1-5. [DOI: 10.1016/j.exphem.2010.07.006] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2010] [Revised: 07/05/2010] [Accepted: 07/14/2010] [Indexed: 11/25/2022]
|
43
|
|
44
|
Hong JH, Lee JK, Park JJ, Lee NW, Lee KW, Na JY. Expression pattern of the class I homeobox genes in ovarian carcinoma. J Gynecol Oncol 2010; 21:29-37. [PMID: 20379445 DOI: 10.3802/jgo.2010.21.1.29] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2009] [Revised: 11/29/2009] [Accepted: 12/15/2009] [Indexed: 12/13/2022] Open
Abstract
OBJECTIVE Although some sporadic reports reveal the link between the homeobox (HOX) genes and ovarian carcinoma, there is no comprehensive analysis of the expression pattern of the class I homeobox genes in ovarian carcinoma that determines the candidate genes involved in ovarian carcinogenesis. METHODS The different patterns of expression of 36 HOX genes were analyzed, including 4 ovarian cancer cell lines and 4 normal ovarian tissues. Using a reverse transcription-polymerase chain reaction (RT-PCR) and quantification analysis, the specific gene that showed a significantly higher expression in ovarian cancer cell lines than in normal ovaries was selected, and western blot analysis was performed adding 7 ovarian cancer tissue specimens. Finally, immunohistochemical and immunocytochemical analyses were performed to compare the pattern of expression of the specific HOX gene between ovarian cancer tissue and normal ovaries. RESULTS Among 36 genes, 11 genes had a different level of mRNA expression between the cancer cell lines and the normal ovarian tissues. Of the 11 genes, only HOXB4 had a significantly higher level of expression in ovarian cancer cell lines than in normal ovaries (p=0.029). Based on western blot, immunohistochemical, and immunocytochemical analyses, HOXB4 was expressed exclusively in the ovarian cancer cell lines or cancer tissue specimens, but not in the normal ovaries. CONCLUSION We suggest HOXB4 may be a novel candidate gene involved in ovarian carcinogenesis.
Collapse
Affiliation(s)
- Jin Hwa Hong
- Department of Obstetrics and Gynecology, Korea University College of Medicine, Seoul, Korea
| | | | | | | | | | | |
Collapse
|
45
|
Abstract
Chromosomal aberrations occur with great frequency and some specificity in leukemia and other hematologic malignancies. The most common outcome of these rearrangements is the formation of a fusion gene, comprising portions of 2 genes normally present in the cell. These fusion proteins are presumed to be oncogenic; in many cases, animal models have proven them to be oncogenic. One of the most promiscuous fusion partner genes is the newly identified NUP98 gene, located on chromosome 11p15.5, which to date has been observed fused to 15 different fusion partners. NUP98 encodes a 98 kD protein that is an important component of the nuclear pore complex, which mediates nucleo-cytoplasmic transport of protein and RNA. The fusion partners of NUP98 form 2 distinct groups: homeobox genes and non-homeobox genes. All NUP98 fusions join the N-terminal GLFG repeats of NUP98 to the C-terminal portion of the partner gene, which, in the case of the homeobox gene partners, includes the homeodomain. Clinical findings are reviewed here, along with the findings of several in vivo and in vitro models have been employed to investigate the mechanisms by which NUP98 fusion genes contribute to the pathogenesis of leukemia.
Collapse
MESH Headings
- Acute Disease
- Antineoplastic Agents/pharmacology
- Cell Transformation, Neoplastic/genetics
- Chromosome Breakage
- Chromosomes, Human, Pair 11/genetics
- DNA Topoisomerases, Type II/physiology
- Enzyme Inhibitors/pharmacology
- Genes, Homeobox
- Hematologic Neoplasms/genetics
- Hematologic Neoplasms/metabolism
- Homeodomain Proteins/genetics
- Homeodomain Proteins/physiology
- Humans
- Leukemia/genetics
- Leukemia/metabolism
- Models, Genetic
- Neoplasm Proteins/genetics
- Neoplasm Proteins/physiology
- Nuclear Pore/physiology
- Nuclear Pore Complex Proteins/genetics
- Nuclear Pore Complex Proteins/physiology
- Oncogene Proteins, Fusion/genetics
- Oncogene Proteins, Fusion/physiology
- Protein Structure, Tertiary
- Topoisomerase II Inhibitors
- Translocation, Genetic
Collapse
Affiliation(s)
- Christopher Slape
- Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Navy 8, Room 5101, Bethesda, Maryland, MD 20889-5105, USA
| | | |
Collapse
|
46
|
Hanington PC, Tam J, Katzenback BA, Hitchen SJ, Barreda DR, Belosevic M. Development of macrophages of cyprinid fish. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2009; 33:411-429. [PMID: 19063916 DOI: 10.1016/j.dci.2008.11.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2008] [Revised: 11/11/2008] [Accepted: 11/14/2008] [Indexed: 05/27/2023]
Abstract
The innate immune responses of early vertebrates, such as bony fishes, play a central role in host defence against infectious diseases and one of the most important effector cells of innate immunity are macrophages. In order for macrophages to be effective in host defence they must be present at all times in the tissues of their host and importantly, the host must be capable of rapidly increasing macrophage numbers during times of need. Hematopoiesis is a process of formation and development of mature blood cells, including macrophages. Hematopoiesis is controlled by soluble factors known as cytokines, that influence changes in transcription factors within the target cells, resulting in cell fate changes and the final development of specific effector cells. The processes involved in macrophage development have been largely derived from mammalian model organisms. However, recent advancements have been made in the understanding of macrophage development in bony fish, a group of organisms that rely heavily on their innate immune defences. Our understanding of the growth factors involved in teleost macrophage development, as well as the receptors and regulatory mechanisms in place to control them has increased substantially. Furthermore, model organisms such as the zebrafish have emerged as important instruments in furthering our understanding of the transcriptional control of cell development in fish as well as in mammals. This review highlights the recent advancements in our understanding of teleost macrophage development. We focused on the growth factors identified to be important in the regulation of macrophage development from a progenitor cell into a functional macrophage and discuss the important transcription factors that have been identified to function in teleost hematopoiesis. We also describe the findings of in vivo studies that have reinforced observations made in vitro and have greatly improved the relevance and importance of using teleost fish as model organisms for studying developmental processes.
Collapse
|
47
|
Maillard I, Hess JL. The Role of Menin in Hematopoiesis. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2009; 668:51-7. [DOI: 10.1007/978-1-4419-1664-8_5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
|
48
|
Gemelli C, Orlandi C, Zanocco Marani T, Martello A, Vignudelli T, Ferrari F, Montanari M, Parenti S, Testa A, Grande A, Ferrari S. The vitamin D3/Hox-A10 pathway supports MafB function during the monocyte differentiation of human CD34+ hemopoietic progenitors. THE JOURNAL OF IMMUNOLOGY 2008; 181:5660-72. [PMID: 18832725 DOI: 10.4049/jimmunol.181.8.5660] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Although a considerable number of reports indicate an involvement of the Hox-A10 gene in the molecular control of hemopoiesis, the conclusions of such studies are quite controversial given that they support, in some cases, a role in the stimulation of stem cell self-renewal and myeloid progenitor expansion, whereas in others they implicate this transcription factor in the induction of monocyte-macrophage differentiation. To clarify this issue, we analyzed the biological effects and the transcriptome changes determined in human primary CD34(+) hemopoietic progenitors by retroviral transduction of a full-length Hox-A10 cDNA. The results obtained clearly indicated that this homeogene is an inducer of monocyte differentiation, at least partly acting through the up-regulation of the MafB gene, recently identified as the master regulator of such a maturation pathway. By using a combined approach based on computational analysis, EMSA experiments, and luciferase assays, we were able to demonstrate the presence of a Hox-A10-binding site in the promoter region of the MafB gene, which suggested the likely molecular mechanism underlying the observed effect. Stimulation of the same cells with the vitamin D(3) monocyte differentiation inducer resulted in a clear increase of Hox-A10 and MafB transcripts, indicating the existence of a precise transactivation cascade involving vitamin D(3) receptor, Hox-A10, and MafB transcription factors. Altogether, these data allow one to conclude that the vitamin D(3)/Hox-A10 pathway supports MafB function during the induction of monocyte differentiation.
Collapse
Affiliation(s)
- Claudia Gemelli
- Department of Biomedical Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
49
|
Pirro M, Bagaglia F, Paoletti L, Razzi R, Mannarino MR. Review: Hypercholesterolemia-associated endothelial progenitor cell dysfunction. Ther Adv Cardiovasc Dis 2008; 2:329-39. [DOI: 10.1177/1753944708094769] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Hypercholesterolemia has been associated with increased cardiovascular risk by contributing to mechanical endothelial injury and dysfunction. There is evidence that chronic exposure to increased plasma cholesterol levels might also impair the repair of lipoprotein-mediated endothelial injury, possibly by reducing the availability and function of circulating endothelial progenitors. This review summarizes current knowledge about the mechanisms of lipoprotein-mediated endothelial injury and endothelial progenitor cell assisted vascular repair; the influence of hypercholesterolemia on endothelial progenitor cell dysfunction will be also addressed.
Collapse
Affiliation(s)
- Matteo Pirro
- Medicina Interna, Angiologia e Malattie da Arteriosclerosi, Università degli Studi di Perugia, Ospedale S. Maria della Misericordia, Piazzale Menghini, 06132 Perugia, Italy,
| | - Francesco Bagaglia
- Medicina Interna, Angiologia e Malattie da Arteriosclerosi, Università degli Studi di Perugia, Ospedale S. Maria della Misericordia, Piazzale Menghini, 06132 Perugia, Italy
| | - Lucio Paoletti
- Medicina Interna, Angiologia e Malattie da Arteriosclerosi, Università degli Studi di Perugia, Ospedale S. Maria della Misericordia, Piazzale Menghini, 06132 Perugia, Italy
| | - Rolando Razzi
- Medicina Interna, Angiologia e Malattie da Arteriosclerosi, Università degli Studi di Perugia, Ospedale S. Maria della Misericordia, Piazzale Menghini, 06132 Perugia, Italy
| | - Massimo R. Mannarino
- Medicina Interna, Angiologia e Malattie da Arteriosclerosi, Università degli Studi di Perugia, Ospedale S. Maria della Misericordia, Piazzale Menghini, 06132 Perugia, Italy
| |
Collapse
|
50
|
Lim CK, Hwang WYK, Aw SE, Sun L. Study of gene expression profile during cord blood-associated megakaryopoiesis. Eur J Haematol 2008; 81:196-208. [PMID: 18510698 DOI: 10.1111/j.1600-0609.2008.01104.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
AIMS To study the gene profile in cord blood (CB)-associated megakaryopoiesis. METHODS In vitro differentiation of megakaryocytes (Mks) was carried out using human CB CD34(+) cells under the stimulation of recombinant human interleukin-3, stem cell factor and thrombopoietin for 7 d, followed by thrombopoietin only for further 3 d. Lineage-specific differentiation of Mk was examined by the expression of CD41 using flow cytometry and confocal microscopy. Total cellular RNA was extracted from day-0 CD34(+), day-10 CD41(+) and CD41(-) populations were isolated by immunomagnetic sorting respectively. Microarray was performed, and the data were analyzed using the GeneChip Operating System, Spotfire software and Genomatix BiblioSphere. RESULTS Flow cytometric analysis showed 19.44 +/- 3.05% CD41(+) cells at day 10 of culture. The purity of CD41(+) population was enriched to 95.70 +/- 4.19% after sorting. Gene expression profiling revealed an upregulation of 285 and downregulation of 53 unique genes in the CD41(+) cells compared with CD41(-) and CD34(+) cells. Platelet-associated genes, such as thrombospondin 1, platelet glycoprotein IIIa, etc., were highly expressed in CD41(+) cells but not in CD41(-) cells and CD34(+) cells. Moreover, some genes that have not been reported to be associated with CB-derived megakaryopoiesis, such as Cbl-interacting proteins Sts-1, protocadherin 21, etc., are found to be highly expressed in the CD41(+) cells from this study. CONCLUSIONS This study reveals a global gene expression profile of in vitro human CB-derived megakaryopoiesis at day 10. Some of these genes may play regulatory roles during the development of CB-derived megakaryopoiesis.
Collapse
Affiliation(s)
- Che Kang Lim
- Department of Clinical Research, Singapore General Hospital, Singapore, Republic of Singapore
| | | | | | | |
Collapse
|