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Usai G, Fambrini M, Pugliesi C, Simoni S. Exploring the patterns of evolution: Core thoughts and focus on the saltational model. Biosystems 2024; 238:105181. [PMID: 38479653 DOI: 10.1016/j.biosystems.2024.105181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 02/29/2024] [Accepted: 03/08/2024] [Indexed: 03/18/2024]
Abstract
The Modern Synthesis, a pillar in biological thought, united Darwin's species origin concepts with Mendel's laws of character heredity, providing a comprehensive understanding of evolution within species. Highlighting phenotypic variation and natural selection, it elucidated the environment's role as a selective force, shaping populations over time. This framework integrated additional mechanisms, including genetic drift, random mutations, and gene flow, predicting their cumulative effects on microevolution and the emergence of new species. Beyond the Modern Synthesis, the Extended Evolutionary Synthesis expands perspectives by recognizing the role of developmental plasticity, non-genetic inheritance, and epigenetics. We suggest that these aspects coexist in the plant evolutionary process; in this context, we focus on the saltational model, emphasizing how saltation events, such as dichotomous saltation, chromosomal mutations, epigenetic phenomena, and polyploidy, contribute to rapid evolutionary changes. The saltational model proposes that certain evolutionary changes, such as the rise of new species, may result suddenly from single macromutations rather than from gradual changes in DNA sequences and allele frequencies within a species over time. These events, observed in domesticated and wild higher plants, provide well-defined mechanistic bases, revealing their profound impact on plant diversity and rapid evolutionary events. Notably, next-generation sequencing exposes the likely crucial role of allopolyploidy and autopolyploidy (saltational events) in generating new plant species, each characterized by distinct chromosomal complements. In conclusion, through this review, we offer a thorough exploration of the ongoing dissertation on the saltational model, elucidating its implications for our understanding of plant evolutionary processes and paving the way for continued research in this intriguing field.
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Affiliation(s)
- Gabriele Usai
- Department of Agriculture, Food and Environment (DAFE), University of Pisa, Via del Borghetto 80, 56124, Pisa, Italy
| | - Marco Fambrini
- Department of Agriculture, Food and Environment (DAFE), University of Pisa, Via del Borghetto 80, 56124, Pisa, Italy
| | - Claudio Pugliesi
- Department of Agriculture, Food and Environment (DAFE), University of Pisa, Via del Borghetto 80, 56124, Pisa, Italy.
| | - Samuel Simoni
- Department of Agriculture, Food and Environment (DAFE), University of Pisa, Via del Borghetto 80, 56124, Pisa, Italy
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Rakotobe M, Fjerdingstad N, Ruiz-Reig N, Lamonerie T, D'Autréaux F. Central role of the habenulo-interpeduncular system in the neurodevelopmental basis of susceptibility and resilience to anxiety in mice. Neurobiol Dis 2024; 191:106392. [PMID: 38145853 DOI: 10.1016/j.nbd.2023.106392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 12/20/2023] [Accepted: 12/21/2023] [Indexed: 12/27/2023] Open
Abstract
Having experienced stress during sensitive periods of brain development strongly influences how individuals cope with later stress. Some are prone to develop anxiety or depression, while others appear resilient. The as-yet-unknown mechanisms underlying these differences may lie in how genes and environmental stress interact to shape the circuits that control emotions. Here, we investigated the role of the habenulo-interpeduncular system (HIPS), a critical node in reward circuits, in early stress-induced anxiety in mice. We found that habenular and IPN components characterized by the expression of Otx2 are synaptically connected and particularly sensitive to chronic stress (CS) during the peripubertal period. Stress-induced peripubertal activation of this HIPS subcircuit elicits both HIPS hypersensitivity to later stress and susceptibility to develop anxiety. We also show that HIPS silencing through conditional Otx2 knockout counteracts these effects of stress. Together, these results demonstrate that a genetic factor, Otx2, and stress interact during the peripubertal period to shape the stress sensitivity of the HIPS, which is shown to be a key modulator of susceptibility or resilience to develop anxiety.
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Affiliation(s)
- Malalaniaina Rakotobe
- Université Côte d'Azur, CNRS, Inserm, iBV, Institut de Biologie Valrose, 06108 Nice, France
| | - Niels Fjerdingstad
- Université Côte d'Azur, CNRS, Inserm, iBV, Institut de Biologie Valrose, 06108 Nice, France
| | - Nuria Ruiz-Reig
- Université Côte d'Azur, CNRS, Inserm, iBV, Institut de Biologie Valrose, 06108 Nice, France
| | - Thomas Lamonerie
- Université Côte d'Azur, CNRS, Inserm, iBV, Institut de Biologie Valrose, 06108 Nice, France.
| | - Fabien D'Autréaux
- Université Côte d'Azur, CNRS, Inserm, iBV, Institut de Biologie Valrose, 06108 Nice, France. Fabien.D'
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Cao Y, Jiang J, Song X, Wang X, Huang F, Li Y, Tang L, Li M, Chen Z, Chen F, Wan H. Engrailed 2 triggers the activation of multiple phosphorylation-induced signaling pathways in both transcription-dependent and -independent manners. Biochem Biophys Res Commun 2023; 680:127-134. [PMID: 37738902 DOI: 10.1016/j.bbrc.2023.09.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Accepted: 09/17/2023] [Indexed: 09/24/2023]
Abstract
Homeodomain (HD)-containing proteins are typically recognized as transcription factors. Engrailed 2 (EN2) is an HD-containing protein that is highly expressed in various types of cancers, however, the mechanism underlying the biological function of EN2 is not fully understood. Here, we report a transcription-independent function of EN2 in addition to its role as a transcription factor. EN2 expression leads to the activation of multiple signaling pathways mediated by phosphorylation cascades. A phosphoproteomic analysis revealed that the phosphorylation status of numerous protein sites was altered after EN2 is expressed. Notably, EN2 was shown to interact with a myriad of proteins implicated in phosphorylation signaling cascades, as determined by immunoprecipitation-mass spectrometry (IP-MS). We validated the interaction between EN2 and B55α, the regulatory subunit of the PP2A-B55α complex, and confirmed that the phosphatase activity of the complex was suppressed by EN2 binding. To target EN2-induced malignancy, two kinds of small molecules were utilized to inhibit the EN2-activated NF-κB and AKT signaling pathways. A clear synergistic effect was observed when the activation of the two pathways was simultaneously blocked. Collectively, the data show that EN2 functions in a transcription-independent manner in addition to its role as a transcription factor. This finding may have therapeutic implications in treating esophageal squamous cell carcinoma (ESCC).
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Affiliation(s)
- Yong Cao
- Experimental Medicine Center, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan, China; Luzhou Key Laboratory of Molecular Cancer, Luzhou, 646000, Sichuan, China
| | - Jie Jiang
- Experimental Medicine Center, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan, China
| | - Xueqin Song
- Experimental Medicine Center, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan, China; Luzhou Key Laboratory of Molecular Cancer, Luzhou, 646000, Sichuan, China
| | - Xiaoyan Wang
- Experimental Medicine Center, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan, China; Luzhou Key Laboratory of Molecular Cancer, Luzhou, 646000, Sichuan, China
| | - Fang Huang
- Experimental Medicine Center, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan, China; Luzhou Key Laboratory of Molecular Cancer, Luzhou, 646000, Sichuan, China
| | - Yan Li
- Experimental Medicine Center, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan, China; Luzhou Key Laboratory of Molecular Cancer, Luzhou, 646000, Sichuan, China
| | - Li Tang
- Experimental Medicine Center, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan, China; Luzhou Key Laboratory of Molecular Cancer, Luzhou, 646000, Sichuan, China
| | - Mingying Li
- Experimental Medicine Center, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan, China; Luzhou Key Laboratory of Molecular Cancer, Luzhou, 646000, Sichuan, China
| | - Zhuang Chen
- Experimental Medicine Center, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan, China; Luzhou Key Laboratory of Molecular Cancer, Luzhou, 646000, Sichuan, China
| | - Feng Chen
- Experimental Medicine Center, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan, China; Luzhou Key Laboratory of Molecular Cancer, Luzhou, 646000, Sichuan, China
| | - Haisu Wan
- Experimental Medicine Center, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan, China; Luzhou Key Laboratory of Molecular Cancer, Luzhou, 646000, Sichuan, China; Metabolic Vascular Disease Key Laboratory of Sichuan Province, Luzhou, 646000, Sichuan, China.
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Agarwal S, Kar P, Boruah M, Saha S, Millo T, Kumar C, Vuthaluru S, Goswami R. Innate differences in the molecular signature of normal inferior & superior human parathyroid glands: potential implications for parathyroid adenoma. Mol Cell Biochem 2023; 478:2351-2359. [PMID: 36703095 DOI: 10.1007/s11010-023-04664-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Accepted: 01/10/2023] [Indexed: 01/28/2023]
Abstract
Primary hyperparathyroidism is a common endocrine disorder. Interestingly, the majority (75%) of parathyroid tumors are localized to the inferior parathyroid glands. To date, the reason for this natural bias has not been investigated. We assessed the global gene expression profile of superior and inferior glands obtained from forensic autopsies. The genes with significant differential expression between superior and inferior parathyroids were further assessed by RT-PCR in 19 pairs. As an iterative approach, additional genes with an established role in parathyroid disorders, i.e., CASR, MAFB, PAX9, TBCE, TBX1, VDR, MEN1, CCND1, and CDC73 were also evaluated by RT-PCR in all 19 pairs of superior and inferior parathyroid glands. Seven homeobox genes, namely HOXA4, HOXA5, HOXBAS3, HOXB4, HOXB6, HOXB9, IRX1, and one encoding for ALDH1A2 showed a lower expression in the inferior parathyroid glands than in the superior. Conversely, SLC6A1 showed a higher expression in the inferior glands. Of the nine genes with significant differential mRNA expression among superior and inferior glands HOXB9, HOXB4 and IRX1 could be detected by western blotting/mass spectrometry. The study is the first to show the differential expression of nine genes HOXA4, HOXA5, HOXBAS3, HOXB4, HOXB6, HOXB9, IRX1, ALDH1A2, and SLC6A1 in inferior versus the superior parathyroid glands. This could have potential implications for the preferential localization of parathyroid tumors to the inferior parathyroid glands as observed in patients with primary hyperparathyroidism.
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Affiliation(s)
- Shipra Agarwal
- Department of Pathology, All India Institute of Medical Sciences, New Delhi, India
| | - Parmita Kar
- Department of Endocrinology and Metabolism, All India Institute of Medical Sciences, New Delhi, India
| | - Monikongkona Boruah
- Department of Pathology, All India Institute of Medical Sciences, New Delhi, India
| | - Soma Saha
- Department of Endocrinology and Metabolism, All India Institute of Medical Sciences, New Delhi, India
| | - Tabin Millo
- Department of Forensic Medicine and Toxicology, All India Institute of Medical Sciences, New Delhi, India
| | - Chitresh Kumar
- Department of Surgical Oncology, All India Institute of Medical Sciences, New Delhi, India
| | - Seenu Vuthaluru
- Department of Surgery, All India Institute of Medical Sciences, New Delhi, India
| | - Ravinder Goswami
- Department of Endocrinology and Metabolism, All India Institute of Medical Sciences, New Delhi, 110029, India.
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Chen S, Jiang X, Xia L, Chen Z, Zhou K, Yan J, Li P. The identification, adaptive evolutionary analyses and mRNA expression levels of homeobox (hox) genes in the Chinese mitten crab Eriocheir sinensis. BMC Genomics 2023; 24:436. [PMID: 37537567 PMCID: PMC10401747 DOI: 10.1186/s12864-023-09489-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 06/28/2023] [Indexed: 08/05/2023] Open
Abstract
BACKGROUND Arthropods are the largest group in the animal kingdom and are morphologically characterized by heterorhythmic segments. Brachyuran decapod crustaceans undergo brachyurization metamorphosis in the early developmental process, characterized by a reduced abdomen that is folded beneath the cephalothorax and inserted between the pereiopods or in a special cavity. As the main cause of major alterations in the evolution of animal body plans, Hox genes encode transcription factors and are involved in bilaterian anterior-posterior axis patterning. RESULTS We found eight Hox genes (labial, proboscipedia, Deformed, zerknüllt, Sex combs reduced, Antennapedia, Ultrabithorax, fushi tarazu, abdominal-A and Abdominal-B) in Eriocheir sinensis. The phylogenetic topology of 13 arthropod Hox genes was closely related to traditional taxonomic groupings. Genome collinearity analysis was performed using genomic data and chromosomal location data of E. sinensis and Portunus trituratus. We found that their chromosomes were highly collinear, and there was a corresponding collinear relationship between the three Hox genes (lab, ftz and Abd-B). The mRNA expression levels of Scr and Antp fluctuated significantly in different developmental stages of E. sinensis, especially in the brachyurization stages. Evolutionary analysis indicated the presence of positively selected sites in Ubx. CONCLUSIONS In this study, we used genome-wide analysis to identify and analyze all members of the Hox genes in E. sinensis. Our data will contribute to a better understanding of Hox genes in E. sinensis and provide useful molecular evolutionary information for further investigation on their roles in the brachyurization of crabs.
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Affiliation(s)
- Shasha Chen
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, 210023, China
| | - Xianfeng Jiang
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, 210023, China
| | - Longjie Xia
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, 210023, China
| | - Zhiyi Chen
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, 210023, China
| | - Kaiya Zhou
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, 210023, China
| | - Jie Yan
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, 210023, China.
| | - Peng Li
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, 210023, China.
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Cocci P, Mosconi G, Palermo FA. Effect of polycyclic aromatic hydrocarbons on homeobox gene expression during embryonic development of cuttlefish, Sepia officinalis. Chemosphere 2023; 325:138315. [PMID: 36889469 DOI: 10.1016/j.chemosphere.2023.138315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 02/24/2023] [Accepted: 03/03/2023] [Indexed: 06/18/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) are persistent organic pollutants (POPs) commonly found in marine environments. Their bioaccumulation can cause harm to aquatic organisms, including invertebrates, particularly during the early stages of embryonic development. In this study, we evaluated, for the first time, the patterns of PAH accumulation in both capsule and embryo of common cuttlefish (Sepia officinalis). In addition, we explored the effects of PAHs by analysing the expression profiles of seven homeobox genes [i.e., gastrulation brain homeobox (GBX), paralogy group labial/Hox1 (HOX1), paralogy group Hox3 (HOX3), dorsal root ganglia homeobox (DRGX), visual system homeobox (VSX), aristaless-like homeobox (ARX) and LIM-homeodomain transcription factor (LHX3/4)]. We found that PAH levels in egg capsules were higher than those observed in chorion membranes (35.1 ± 13.3 ng/g vs 16.4 ± 5.9 ng/g). Furthermore, PAHs were also found in perivitellin fluid (11.5 ± 5.0 ng/ml). Naphthalene and acenaphthene were the congeners present at highest concentrations in each analysed egg component suggesting higher bioaccumulation rates. Embryos with high concentrations of PAHs also showed a significant increase in mRNA expression for each of the analysed homeobox genes. In particular, we observed a 15-fold increase in the ARX expression levels. Additionally, the statistically significant variation in homeobox gene expression patterns was accompanied by a concomitant increase in mRNA levels of both aryl hydrocarbon receptor (AhR) and estrogen receptor (ER). These findings suggest that bioaccumulation of PAHs may modulate developmental processes of cuttlefish embryos by targeting homeobox gene-mediated transcriptional outcomes. Mechanisms underlying the upregulation of homeobox genes could be related to the ability of PAHs to directly activate AhR- or ER-related signaling pathways.
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Affiliation(s)
- Paolo Cocci
- School of Biosciences and Veterinary Medicine, University of Camerino, Via Gentile III Da Varano, I-62032, Camerino, MC, Italy
| | - Gilberto Mosconi
- School of Biosciences and Veterinary Medicine, University of Camerino, Via Gentile III Da Varano, I-62032, Camerino, MC, Italy
| | - Francesco Alessandro Palermo
- School of Biosciences and Veterinary Medicine, University of Camerino, Via Gentile III Da Varano, I-62032, Camerino, MC, Italy.
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Saboori-Darabi S, Carrera P, Akbari A, Amiri-Yekta A, Almadani N, Battista Pipitone G, Shahrokh-Tehraninejad E, Lotfi M, Mazaheri M, Totonchi M. A heterozygous missense variant in DLX3 leads to uterine leiomyomas and pregnancy losses in a consanguineous Iranian family. Gene 2023; 865:147292. [PMID: 36854347 DOI: 10.1016/j.gene.2023.147292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 02/07/2023] [Accepted: 02/15/2023] [Indexed: 03/01/2023]
Abstract
Uterine leiomyomas (ULs) are benign solid tumors arising from the uterine myometrium. They are the most common pelvic tumors among females of reproductive age. Despite the universal prevalence of ULs and its huge impact on women's lives, the exact etiology and pathophysiologic mechanisms have not been fully understood. Numerous studies indicate that genetic factors play a crucial role in ULs development. This study aims to identify the probable genetic causes of ULs in a consanguineous Iranian family. Whole-exome sequencing (WES) on five family members with ULs revealed a likely pathogenic missense variant encoding for Y88C in the transactivation (TA) domain of DLX3 gene (c.263A > G; p.Y88C). Sanger sequencing of a total of 9 affected and non-affected family members indicated a segregation with disease with autosomal dominant inheritance. Moreover, targeted Sanger sequencing on 32 additional non-related patients with ULs showed none was heterozygous for this variant. MutPred2 predicted the pathogenicity of candidate variant by both phosphorylation and sulfation loss as actionable hypotheses. Project HOPE revealed that the identified variant residue is smaller and more hydrophobic comparing to the wild-type residue. I-TASSER and UCSF Chimera were also used for modeling and visualizing the predicted variant, respectively. This WES analysis is the first to report a variant in DLX3 variation associated with ULs pathogenicity in Iranian population highlighting the effectiveness of WES as a strong diagnostic method. However, further functional studies on this variant are needed to confirm the potential pathogenicity of this mutation.
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Affiliation(s)
- Samaneh Saboori-Darabi
- Department of Medical Genetics, School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Paola Carrera
- Laboratory of Clinical Molecular Biology and Cytogenetics, IRCCS San Raffaele Hospital, Milan, Italy
| | - Arvand Akbari
- Department of Genetics, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
| | - Amir Amiri-Yekta
- Department of Genetics, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
| | - Navid Almadani
- Department of Genetics, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
| | | | - Ensieh Shahrokh-Tehraninejad
- Department of Endocrinology and Female Infertility, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
| | - Marzieh Lotfi
- Department of Medical Genetics, School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Mahta Mazaheri
- Department of Medical Genetics, School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran; Mother & Newborn Health Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
| | - Mehdi Totonchi
- Department of Genetics, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran; School of Biological Science, Institute for Research in Fundamental Sciences (IPM), Tehran, Iran.
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Hii EPW, Ramanathan A, Pandarathodiyil AK, Wong GR, Sekhar EVS, Binti Talib R, Zaini ZM, Zain RB. Homeobox Genes in Odontogenic Lesions: A Scoping Review. Head Neck Pathol 2023; 17:218-232. [PMID: 36344906 PMCID: PMC10063701 DOI: 10.1007/s12105-022-01481-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 07/24/2022] [Accepted: 07/25/2022] [Indexed: 11/09/2022]
Abstract
BACKGROUND Homeobox genes play crucial roles in tooth morphogenesis and development and thus mutations in homeobox genes cause developmental disorders such as odontogenic lesions. The aim of this scoping review is to identify and compile available data from the literatures on the topic of homeobox gene expression in odontogenic lesions. METHOD An electronic search to collate all the information on studies on homeobox gene expression in odontogenic lesions was carried out in four databases (PubMed, EBSCO host, Web of Science and Cochrane Library) with selected keywords. All papers which reported expression of homeobox genes in odontogenic lesions were considered. RESULTS A total of eleven (11) papers describing expression of homeobox genes in odontogenic lesions were identified. Methods of studies included next generation sequencing, microarray analysis, RT-PCR, Western blotting, in situ hybridization, and immunohistochemistry. The homeobox reported in odontogenic lesions includes LHX8 and DLX3 in odontoma; PITX2, MSX1, MSX2, DLX, DLX2, DLX3, DLX4, DLX5, DLX6, ISL1, OCT4 and HOX C in ameloblastoma; OCT4 in adenomatoid odontogenic tumour; PITX2 and MSX2 in primordial odontogenic tumour; PAX9 and BARX1 in odontogenic keratocyst; PITX2, ZEB1 and MEIS2 in ameloblastic carcinoma while there is absence of DLX2, DLX3 and MSX2 in clear cell odontogenic carcinoma. CONCLUSIONS This paper summarized and reviews the possible link between homeobox gene expression in odontogenic lesions. Based on the current available data, there are insufficient evidence to support any definite role of homeobox gene in odontogenic lesions.
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Affiliation(s)
- Erica Pey Wen Hii
- Department of Oral & Maxillofacial Clinical Sciences, Faculty of Dentistry, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
| | - Anand Ramanathan
- Department of Oral & Maxillofacial Clinical Sciences, Faculty of Dentistry, Universiti Malaya, 50603, Kuala Lumpur, Malaysia.
- Oral Cancer Research & Coordinating Centre, Faculty of Dentistry, Universiti Malaya, 50603, Kuala Lumpur, Malaysia.
| | | | - Gou Rean Wong
- Faculty of Dentistry, MAHSA University, Jenjarom, Selangor, Malaysia
| | - E V Soma Sekhar
- Faculty of Dentistry, MAHSA University, Jenjarom, Selangor, Malaysia
| | | | - Zuraiza Mohamad Zaini
- Department of Oral & Maxillofacial Clinical Sciences, Faculty of Dentistry, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
- Oral Cancer Research & Coordinating Centre, Faculty of Dentistry, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
| | - Rosnah Binti Zain
- Oral Cancer Research & Coordinating Centre, Faculty of Dentistry, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
- Faculty of Dentistry, MAHSA University, Jenjarom, Selangor, Malaysia
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9
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Gao M, Cui Z, Li S, Li N, Tong L, Wang Y, Song M, Zhou B, Yin Z. Survival Outcome and Clinicopathologicl analysis of Homeobox gene cluster-embedded LncRNAs in Human Cancers: A Systematic Review and Meta-analysis. Expert Rev Mol Diagn 2021; 21:1211-1221. [PMID: 34410213 DOI: 10.1080/14737159.2021.1970536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Abstract
OBJECTIVE The ectopic expression of Homeobox (HOX) gene cluster-embedded long non-coding RNAs (LncRNAs) have been involved several carcinogenic development and progressions. This meta-analysis aimed to summarize the LncRNAs to validate the functions and the prognostic values in several kinds of cancer. METHODS The retrospective study was conducted to analyze the association between HOX gene-related LncRNAs and the survival outcomes. Cochran's Q and I2 test were used for calculated heterogeneity, and I2 > 50%, P < 0.05 was conformed to the random effect model. Publication bias was indicated by Begg's and Egger's test. RESULTS Total 15,315 patients extracting from 121 studies focused on assessing the association between LncRNAs and the survival outcomes and 12,110 participants were enrolled to address the clinicopathological features. The results demonstrated that the overexpression of HOX gene cluster-embedded LncRNAs revealed notable association among tumor size (pooled OR = 1.80), lymph node metastasis (LNM) stage (pooled OR = 3.00), tumor node metastasis (TNM) stage (pooled OR = 2.86), histological differentiation (pooled OR = 1.59) and distant metastasis (pooled OR = 2.49). Additionally, the up-regulated LncRNAs predicted a poor prognosis in overall survival (pooled HR = 1.95, 95%CI = 1.86-2.04), and also disclosed worse prognosis among the stratified analysis included HOX clusters, LncRNAs, ethnicity, and tumor classification (pooled HRs >1). CONCLUSION In summary, the findings proved that HOX gene cluster-embedded LncRNAs acted as potential biomarkers for clinical treatment of several tumors and the overexpression might be a candidate hallmark for prognosis outcome.
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Affiliation(s)
- Min Gao
- Department of Epidemiology, School of Public Health, China Medical University, Liaoning, PR China
| | - Zhigang Cui
- Department of Science and Education, School of Nursing, China Medical University, Liaoning, Pr, China
| | - Sixuan Li
- Department of Epidemiology, School of Public Health, China Medical University, Liaoning, PR China
| | - Na Li
- Department of Epidemiology, School of Public Health, China Medical University, Liaoning, PR China
| | - Lianwei Tong
- Department of Epidemiology, School of Public Health, China Medical University, Liaoning, PR China
| | - Ying Wang
- Department of Epidemiology, School of Public Health, China Medical University, Liaoning, PR China
| | - Mingyang Song
- Department of Epidemiology, School of Public Health, China Medical University, Liaoning, PR China
| | - Baosen Zhou
- Department of Clinical Epidemiology and Evidence-based Medicine, First Affiliated Hospital of China Medical University, Liaoning, Pr China.,Key Laboratory of Cancer Etiology and Intervention, University of Liaoning Province, Liaoning, PR China
| | - Zhihua Yin
- Department of Epidemiology, School of Public Health, China Medical University, Liaoning, PR China.,Key Laboratory of Cancer Etiology and Intervention, University of Liaoning Province, Liaoning, PR China
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10
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Rodrigues MFSD, Xavier FCA, Esteves CD, Nascimento RB, Nobile JS, Severino P, de Cicco R, Toporcov TN, Tajara EH, Nunes FD. Homeobox gene amplification and methylation in oral squamous cell carcinoma. Arch Oral Biol 2021; 129:105195. [PMID: 34126417 DOI: 10.1016/j.archoralbio.2021.105195] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Revised: 06/03/2021] [Accepted: 06/04/2021] [Indexed: 02/07/2023]
Abstract
OBJECTIVES Investigate the DNA copy number and the methylation profile of the homeobox genes HOXA5, HOXA7, HOXA9, HOXB5, HOXB13, HOXC12, HOXC13, HOXD10, HOXD11, IRX4 and ZHX1, and correlate them with clinicopathological parameters and overall survival. MATERIAL AND METHODS DNA from OSCC samples and surgical margins were submitted to DNA amplification by qPCR and to DNA methylation analysis using a DNA Methylation PCR Array System. RESULTS HOXA5, HOXB5 and HOXD10 were amplified in surgical margins while HOXA9, HOXB13 and IRX4 were amplified in OSCC. HOXD10 demonstrated hypermethylation in half of the tumor while ZHX1 did not show hypermethylation. No correlation of DNA copy number or methylation with clinicopathological parameters or survival was observed. CONCLUSION HOXA9, HOXB13 and IRX4 genes appears to be regulated by amplification and HOXD10 by methylation in OSCC. Further studies are needed to determine the role of these events in OSCC development.
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Affiliation(s)
| | - Flávia Caló Aquino Xavier
- Laboratory of Oral Surgical Pathology, School of Dentistry, Federal University of Bahia, Salvador, Brazil
| | - Carina Duarte Esteves
- Department of Oral Pathology, School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - Rebeca Barros Nascimento
- Laboratory of Oral Surgical Pathology, School of Dentistry, Federal University of Bahia, Salvador, Brazil
| | - Juliana Stephan Nobile
- Postgraduate Program in Biophotonics Applied to Health Sciences, Nove De Julho University (UNINOVE), São Paulo, SP, Brazil
| | - Patrícia Severino
- Center for Experimental Research, Albert Einstein Research and Education Institute, Hospital Israelita Albert Einstein, Sao Paulo, Brazil
| | | | | | - Eloiza Helena Tajara
- Department of Molecular Biology, School of Medicine of São José do Rio Preto/FAMERP, São José do Rio Preto, SP, Brazil
| | - Fábio Daumas Nunes
- Department of Oral Pathology, School of Dentistry, University of São Paulo, São Paulo, Brazil.
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11
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Liu P, Zhang J, Du D, Zhang D, Jin Z, Qiu W, Zhou X, Dong S, Zhou M, Zhao H, Zhang W, Ma J, Sun S, Fu W, Liu Y, Wang L. Altered DNA methylation pattern reveals epigenetic regulation of Hox genes in thoracic aortic dissection and serves as a biomarker in disease diagnosis. Clin Epigenetics 2021; 13:124. [PMID: 34103071 PMCID: PMC8186232 DOI: 10.1186/s13148-021-01110-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 05/31/2021] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Thoracic aortic dissection (TAD) is a severe disease with limited understandings in its pathogenesis. Altered DNA methylation has been revealed to be involved in many diseases etiology. Few studies have examined the role of DNA methylation in the development of TAD. This study explored alterations of the DNA methylation landscape in TAD and examined the potential role of cell-free DNA (cfDNA) methylation as a biomarker in TAD diagnosis. RESULTS Ascending aortic tissues from TAD patients (Stanford type A; n = 6) and healthy controls (n = 6) were first examined via whole-genome bisulfite sequencing (WGBS). While no obvious global methylation shift was observed, numerous differentially methylated regions (DMRs) were identified, with associated genes enriched in the areas of vasculature and heart development. We further confirmed the methylation and expression changes in homeobox (Hox) clusters with 10 independent samples using bisulfite pyrosequencing and quantitative real-time PCR (qPCR). Among these, HOXA5, HOXB6 and HOXC6 were significantly down-regulated in TAD samples relative to controls. To evaluate cfDNA methylation pattern as a biomarker in TAD diagnosis, cfDNA from TAD patients (Stanford type A; n = 7) and healthy controls (n = 4) were examined by WGBS. A prediction model was built using DMRs identified previously from aortic tissues on methylation data from cfDNA. Both high sensitivity (86%) and specificity (75%) were achieved in patient classification (AUC = 0.96). CONCLUSIONS These findings showed an altered epigenetic regulation in TAD patients. This altered epigenetic regulation and subsequent altered expression of genes associated with vasculature and heart development, such as Hox family genes, may contribute to the loss of aortic integrity and TAD pathogenesis. Additionally, the cfDNA methylation in TAD was highly disease specific, which can be used as a non-invasive biomarker for disease prediction.
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Affiliation(s)
- Peiru Liu
- MOE Key Laboratory of Metabolism and Molecular Medicine, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences and Zhongshan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Jing Zhang
- Vascular Surgery Department, Zhongshan Xiamen Hospital, Fudan University, Xiamen, People's Republic of China.,Vascular Surgery Department, Zhongshan Hospital, Fudan University, Shanghai, People's Republic of China.,Department of Cardiac Surgery, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, People's Republic of China
| | - Duo Du
- MOE Key Laboratory of Metabolism and Molecular Medicine, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences and Zhongshan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Dandan Zhang
- MOE Key Laboratory of Metabolism and Molecular Medicine, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences and Zhongshan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Zelin Jin
- MOE Key Laboratory of Metabolism and Molecular Medicine, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences and Zhongshan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Wenqing Qiu
- MOE Key Laboratory of Metabolism and Molecular Medicine, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences and Zhongshan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Xiushi Zhou
- Vascular Surgery Department, Zhongshan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Shulong Dong
- MOE Key Laboratory of Metabolism and Molecular Medicine, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences and Zhongshan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Mengyu Zhou
- MOE Key Laboratory of Metabolism and Molecular Medicine, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences and Zhongshan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Heyu Zhao
- MOE Key Laboratory of Metabolism and Molecular Medicine, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences and Zhongshan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Wei Zhang
- Vascular Surgery Department, Zhongshan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Jiakang Ma
- MOE Key Laboratory of Metabolism and Molecular Medicine, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences and Zhongshan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Shaoyang Sun
- MOE Key Laboratory of Metabolism and Molecular Medicine, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences and Zhongshan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Weiguo Fu
- Vascular Surgery Department, Zhongshan Xiamen Hospital, Fudan University, Xiamen, People's Republic of China. .,Vascular Surgery Department, Zhongshan Hospital, Fudan University, Shanghai, People's Republic of China.
| | - Yun Liu
- MOE Key Laboratory of Metabolism and Molecular Medicine, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences and Zhongshan Hospital, Fudan University, Shanghai, People's Republic of China. .,State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, Shanghai, People's Republic of China.
| | - Lixin Wang
- Vascular Surgery Department, Zhongshan Xiamen Hospital, Fudan University, Xiamen, People's Republic of China. .,Vascular Surgery Department, Zhongshan Hospital, Fudan University, Shanghai, People's Republic of China.
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Abstract
Homeobox genes encode sequence-specific transcription factors (SSTFs) that recognize specific DNA sequences and regulate organogenesis in all eukaryotes. They are essential in specifying spatial and temporal cell identity and as a result, their mutations often cause severe developmental defects. Pitx genes belong to the PRD class of the highly evolutionary conserved homeobox genes in all animals. Vertebrates possess three Pitx paralogs, Pitx1, Pitx2, and Pitx3 while non-vertebrates have only one Pitx gene. The ancient role of regulating left-right (LR) asymmetry is conserved while new functions emerge to afford more complex body plan and functionalities. In mouse, Pitx1 regulates hindlimb tissue patterning and pituitary development. Pitx2 is essential for the development of the oral cavity and abdominal wall while regulates the formation and symmetry of other organs including pituitary, heart, gut, lung among others by controlling growth control genes upon activation of the Wnt/ß-catenin signaling pathway. Pitx3 is essential for lens development and migration and survival of the dopaminergic neurons of the substantia nigra. Pitx gene mutations are linked to various congenital defects and cancers in humans. Pitx gene family has the potential to offer a new approach in regenerative medicine and aid in identifying new drug targets.
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13
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Guerrero Schimpf M, Milesi MM, Luque EH, Varayoud J. Evaluation of Development of the Rat Uterus as a Toxicity Biomarker. Methods Mol Biol 2021; 2240:103-17. [PMID: 33423230 DOI: 10.1007/978-1-0716-1091-6_9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
Abstract
The developing uterus is highly sensitive to a brief exposure to different substances, in particular those with endocrine-disrupting activity. Thus, exposure to environmental, nutritional, chemical, and other xenobiotic factors affecting signaling events during critical organizational periods can alter the normal course of uterine development with lasting consequences. In this chapter, we provide an experimental protocol to evaluate the development of the rat uterus as a toxicity biomarker at two different developmental time points: (1) the neonatal period, on postnatal day (PND) 8, and (2) the prepubertal period, on PND21. In this experimental approach, we propose to assess: (1) uterine morphology and cytodifferentiation, (2) uterine cell proliferation, and (3) the expression of proteins involved in uterine organogenetic differentiation. All these morphological and molecular markers are useful tools to determine the consequences of exposure to toxicants with the potential to disrupt the uterine development.
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Bistoletti M, Micheloni G, Baranzini N, Bosi A, Conti A, Filpa V, Pirrone C, Millefanti G, Moro E, Grimaldi A, Valli R, Baj A, Crema F, Giaroni C, Porta G. Homeoprotein OTX1 and OTX2 involvement in rat myenteric neuron adaptation after DNBS-induced colitis. PeerJ 2020; 8:e8442. [PMID: 32095330 PMCID: PMC7024580 DOI: 10.7717/peerj.8442] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Accepted: 12/20/2019] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Inflammatory bowel diseases are associated with remodeling of neuronal circuitries within the enteric nervous system, occurring also at sites distant from the acute site of inflammation and underlying disturbed intestinal functions. Homeoproteins orthodenticle OTX1 and OTX2 are neuronal transcription factors participating to adaptation during inflammation and underlying tumor growth both in the central nervous system and in the periphery. In this study, we evaluated OTX1 and OTX2 expression in the rat small intestine and distal colon myenteric plexus after intrarectal dinitro-benzene sulfonic (DNBS) acid-induced colitis. METHODS OTX1 and OTX2 distribution was immunohistochemically investigated in longitudinal muscle myenteric plexus (LMMP)-whole mount preparations. mRNAs and protein levels of both OTX1 and OTX2 were evaluated by qRT-PCR and Western blotting in LMMPs. RESULTS DNBS-treatment induced major gross morphology and histological alterations in the distal colon, while the number of myenteric neurons was significantly reduced both in the small intestine and colon. mRNA levels of the inflammatory markers, TNFα, pro-IL1β, IL6, HIF1α and VEGFα and myeloperoxidase activity raised in both regions. In both small intestine and colon, an anti-OTX1 antibody labeled a small percentage of myenteric neurons, and prevalently enteric glial cells, as evidenced by co-staining with the glial marker S100β. OTX2 immunoreactivity was present only in myenteric neurons and was highly co-localized with neuronal nitric oxide synthase. Both in the small intestine and distal colon, the number of OTX1- and OTX2-immunoreactive myenteric neurons significantly increased after DNBS treatment. In these conditions, OTX1 immunostaining was highly superimposable with inducible nitric oxide synthase in both regions. OTX1 and OTX2 mRNA and protein levels significantly enhanced in LMMP preparations of both regions after DNBS treatment. CONCLUSIONS These data suggest that colitis up-regulates OTX1 and OTX2 in myenteric plexus both on site and distantly from the injury, potentially participating to inflammatory-related myenteric ganglia remodeling processes involving nitrergic transmission.
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Affiliation(s)
- Michela Bistoletti
- Department of Medicine and Surgery, University of Insubria, Varese, Italy
| | - Giovanni Micheloni
- Department of Medicine and Surgery, University of Insubria, Varese, Italy
| | - Nicolò Baranzini
- Department of Biotechnology and Life Sciences, University of Insubria, Varese, Italy
| | - Annalisa Bosi
- Department of Medicine and Surgery, University of Insubria, Varese, Italy
| | - Andrea Conti
- Department of Medicine and Surgery, University of Insubria, Varese, Italy
| | - Viviana Filpa
- Department of Medicine and Surgery, University of Insubria, Varese, Italy
| | - Cristina Pirrone
- Department of Medicine and Surgery, University of Insubria, Varese, Italy
| | - Giorgia Millefanti
- Department of Medicine and Surgery, University of Insubria, Varese, Italy
| | - Elisabetta Moro
- Department of Internal Medicine and Therapeutics, University of Pavia, Pavia, Italy
| | - Annalisa Grimaldi
- Department of Biotechnology and Life Sciences, University of Insubria, Varese, Italy
| | - Roberto Valli
- Department of Medicine and Surgery, University of Insubria, Varese, Italy
| | - Andreina Baj
- Department of Medicine and Surgery, University of Insubria, Varese, Italy
| | - Francesca Crema
- Department of Internal Medicine and Therapeutics, University of Pavia, Pavia, Italy
| | - Cristina Giaroni
- Department of Medicine and Surgery, University of Insubria, Varese, Italy
| | - Giovanni Porta
- Department of Medicine and Surgery, University of Insubria, Varese, Italy
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15
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Li L, Zhang X, Liu Q, Yin H, Diao Y, Zhang Z, Wang Y, Gao Y, Ren X, Li J, Cui D, Lu Y, Liu H. Emerging role of HOX genes and their related long noncoding RNAs in lung cancer. Crit Rev Oncol Hematol 2019; 139:1-6. [PMID: 31112877 DOI: 10.1016/j.critrevonc.2019.04.019] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 04/12/2019] [Accepted: 04/19/2019] [Indexed: 01/02/2023] Open
Abstract
The transcription factor homeobox (Hox) proteins are the master regulator for the embryonic development. Studies have identified new functions for HOX in the regulation of metabolism and other primary cellular processes in humans. Their dysregulation has been observed in a variety of cancers and accumulating evidence has revealed the crucial role of HOX in cancer progression, metastasis, and resistance to therapy. HOX-related long non-coding RNAs (lncRNAs) became the most attracting lncRNAs recently that play critical role in gene regulation and chromatin dynamics in cancers. In this review, we explore the roles of HOX and their related lncRNAs in lung cancer, indicating HOX genes as potential therapeutic targets in lung cancer.
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Affiliation(s)
- Lianlian Li
- Institute of Basic Medicine, Shandong Academy of Medical Sciences, Jinan, 250062, Shandong, China
| | - Xiaoyu Zhang
- Institute of Basic Medicine, Shandong Academy of Medical Sciences, Jinan, 250062, Shandong, China
| | - Qian Liu
- Institute of Basic Medicine, Shandong Academy of Medical Sciences, Jinan, 250062, Shandong, China; School of Life Science, Ludong University, Yantai, 264025, Shandong, China
| | - Haipeng Yin
- Institute of Basic Medicine, Shandong Academy of Medical Sciences, Jinan, 250062, Shandong, China
| | - Yutao Diao
- Institute of Basic Medicine, Shandong Academy of Medical Sciences, Jinan, 250062, Shandong, China
| | - Zhiyong Zhang
- Institute of Basic Medicine, Shandong Academy of Medical Sciences, Jinan, 250062, Shandong, China
| | - Yang Wang
- Institute of Basic Medicine, Shandong Academy of Medical Sciences, Jinan, 250062, Shandong, China
| | - Yan Gao
- Institute of Basic Medicine, Shandong Academy of Medical Sciences, Jinan, 250062, Shandong, China
| | - Xia Ren
- Institute of Basic Medicine, Shandong Academy of Medical Sciences, Jinan, 250062, Shandong, China
| | - Juan Li
- Institute of Basic Medicine, Shandong Academy of Medical Sciences, Jinan, 250062, Shandong, China
| | - Dayong Cui
- School of Life Sciences, Qilu Normal University, Jinan, 250200, Shandong, China
| | - Yanqin Lu
- Shandong Medicinal Biotechnology Center, Shandong Academy of Medical Sciences, Jinan, 250062, Shandong, China
| | - Hongyan Liu
- Institute of Basic Medicine, Shandong Academy of Medical Sciences, Jinan, 250062, Shandong, China.
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16
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Treffkorn S, Mayer G. Expression of NK genes that are not part of the NK cluster in the onychophoran Euperipatoides rowelli (Peripatopsidae). BMC Dev Biol 2019; 19:7. [PMID: 30987579 PMCID: PMC6466738 DOI: 10.1186/s12861-019-0185-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Accepted: 03/12/2019] [Indexed: 12/25/2022]
Abstract
Background NK genes are a group of homeobox transcription factors that are involved in various molecular pathways across bilaterians. They are typically divided into two subgroups, the NK cluster (NKC) and NK-linked genes (NKL). While the NKC genes have been studied in various bilaterians, corresponding data of many NKL genes are missing to date. To further investigate the ancestral roles of NK family genes, we analyzed the expression patterns of NKL genes in the onychophoran Euperipatoides rowelli. Results The NKL gene complement of E. rowelli comprises eight genes, including BarH, Bari, Emx, Hhex, Nedx, NK2.1, vax and NK2.2, of which only NK2.2 was studied previously. Our data for the remaining seven NKL genes revealed expression in different structures associated with the developing nervous system in embryos of E. rowelli. While NK2.1 and vax are expressed in distinct medial regions of the developing protocerebrum early in development, BarH, Bari, Emx, Hhex and Nedx are expressed in late developmental stages, after all major structures of the nervous system have been established. Furthermore, BarH and Nedx are expressed in distinct mesodermal domains in the developing limbs. Conclusions Comparison of our expression data to those of other bilaterians revealed similar patterns of NK2.1, vax, BarH and Emx in various aspects of neural development, such as the formation of anterior neurosecretory cells mediated by a conserved molecular mechanism including NK2.1 and vax, and the development of the central and peripheral nervous system involving BarH and Emx. A conserved role in neural development has also been reported from NK2.2, suggesting that the NKL genes might have been primarily involved in neural development in the last common ancestor of bilaterians or at least nephrozoans (all bilaterians excluding xenacoelomorphs). The lack of comparative data for many of the remaining NKL genes, including Bari, Hhex and Nedx currently hampers further evolutionary conclusions. Hence, future studies should focus on the expression of these genes in other bilaterians, which would provide a basis for comparative studies and might help to better understand the role of NK genes in the diversification of bilaterians. Electronic supplementary material The online version of this article (10.1186/s12861-019-0185-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Sandra Treffkorn
- Department of Zoology, Institute of Biology, University of Kassel, Kassel, Germany.
| | - Georg Mayer
- Department of Zoology, Institute of Biology, University of Kassel, Kassel, Germany
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17
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Cui S, Li L, Yu RT, Downes M, Evans RM, Hulin JA, Makarenkova HP, Meech R. β-Catenin is essential for differentiation of primary myoblasts via cooperation with MyoD and α-catenin. Development 2019; 146:dev.167080. [PMID: 30683662 DOI: 10.1242/dev.167080] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Accepted: 01/16/2019] [Indexed: 12/12/2022]
Abstract
Canonical Wnts promote myoblast differentiation; however, the role of β-catenin in adult myogenesis has been contentious, and its mechanism(s) unclear. Using CRISPR-generated β-catenin-null primary adult mouse myoblasts, we found that β-catenin was essential for morphological differentiation and timely deployment of the myogenic gene program. Alignment, elongation and fusion were grossly impaired in null cells, and myogenic gene expression was not coordinated with cytoskeletal and membrane remodeling events. Rescue studies and genome-wide analyses extended previous findings that a β-catenin-TCF/LEF interaction is not required for differentiation, and that β-catenin enhances MyoD binding to myogenic loci. We mapped cellular pathways controlled by β-catenin and defined novel targets in myoblasts, including the fusogenic genes myomaker and myomixer. We also showed that interaction of β-catenin with α-catenin was important for efficient differentiation. Overall the study suggests dual roles for β-catenin: a TCF/LEF-independent nuclear function that coordinates an extensive network of myogenic genes in cooperation with MyoD; and an α-catenin-dependent membrane function that helps control cell-cell interactions. β-Catenin-TCF/LEF complexes may function primarily in feedback regulation to control levels of β-catenin and thus prevent precocious/excessive myoblast fusion.
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Affiliation(s)
- Shuang Cui
- Department of Clinical Pharmacology, Flinders University, Bedford Park, SA 5042, Australia.,Department of Physiology, Shandong University School of Medicine, Jinan, Shandong 250012, China
| | - Liang Li
- Department of Biochemistry, Flinders University, Bedford Park, SA 5042 and Department of Biochemistry, University of Adelaide, North Tce, Adelaide, SA 5005, Australia
| | - Ruth T Yu
- Gene Expression Laboratory, Salk Institute, La Jolla, CA 92037, USA
| | - Michael Downes
- Gene Expression Laboratory, Salk Institute, La Jolla, CA 92037, USA
| | - Ronald M Evans
- Gene Expression Laboratory, Salk Institute, La Jolla, CA 92037, USA.,Howard Hughes Medical Institute, Salk Institute, La Jolla, CA 92037, USA
| | - Julie-Ann Hulin
- Department of Clinical Pharmacology, Flinders University, Bedford Park, SA 5042, Australia
| | - Helen P Makarenkova
- Department of Molecular Medicine, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Robyn Meech
- Department of Clinical Pharmacology, Flinders University, Bedford Park, SA 5042, Australia
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18
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Bertolini I, Terrasi A, Martelli C, Gaudioso G, Di Cristofori A, Storaci AM, Formica M, Braidotti P, Todoerti K, Ferrero S, Caroli M, Ottobrini L, Vaccari T, Vaira V. A GBM-like V-ATPase signature directs cell-cell tumor signaling and reprogramming via large oncosomes. EBioMedicine 2019; 41:225-235. [PMID: 30737083 PMCID: PMC6441844 DOI: 10.1016/j.ebiom.2019.01.051] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 01/24/2019] [Accepted: 01/25/2019] [Indexed: 12/17/2022] Open
Abstract
Background The V-ATPase proton pump controls acidification of intra and extra-cellular milieu in both physiological and pathological conditions. We previously showed that some V-ATPase subunits are enriched in glioma stem cells and in patients with poor survival. In this study, we investigated how expression of a GBM-like V-ATPase pump influences the non-neoplastic brain microenvironment. Methods Large oncosome (LO) vesicles were isolated from primary glioblastoma (GBM) neurospheres, or from patient sera, and co-cultured with primary neoplastic or non-neoplastic brain cells. LO transcript and protein contents were analyzed by qPCR, immunoblotting and immunogold staining. Activation of pathways in recipient cells was determined at gene and protein expression levels. V-ATPase activity was impaired by Bafilomycin A1 or gene silencing. Findings GBM neurospheres influence their non-neoplastic microenvironment by delivering the V-ATPase subunit V1G1 and the homeobox genes HOXA7, HOXA10, and POU3F2 to recipient cells via LO. LOs reprogram recipient cells to proliferate, grow as spheres and to migrate. Moreover, LOs are particularly abundant in the circulation of GBM patients with short survival time. Finally, impairment of V-ATPase reduces LOs activity. Interpretation We identified a novel mechanism adopted by glioma stem cells to promote disease progression via LO-mediated reprogramming of their microenvironment. Our data provide preliminary evidence for future development of LO-based liquid biopsies and suggest a novel potential strategy to contrast glioma progression. Fund This work was supported by Fondazione Cariplo (2014-1148 to VV) and by the Italian Minister of Health-Ricerca Corrente program 2017 (to SF).
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Affiliation(s)
- Irene Bertolini
- Division of Pathology, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Andrea Terrasi
- Division of Pathology, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Cristina Martelli
- Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - Gabriella Gaudioso
- Division of Pathology, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Andrea Di Cristofori
- Division of Neurosurgery, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Alessandra Maria Storaci
- Division of Pathology, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy; Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - Miriam Formica
- Department of Biosciences, Universita' degli Studi di Milano, Milan, Italy
| | | | - Katia Todoerti
- Department of Oncology and Hemato-oncology, University of Milan, Hematology Division, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Stefano Ferrero
- Division of Pathology, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy; Department of Biosciences, University of Milan, Milan, Italy
| | - Manuela Caroli
- Division of Neurosurgery, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Luisa Ottobrini
- Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - Thomas Vaccari
- Department of Biosciences, University of Milan, Milan, Italy.
| | - Valentina Vaira
- Division of Pathology, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy; Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy; Fondazione Istituto Nazionale Genetica Molecolare 'Romeo ed Enrica Invernizzi', Milan, Italy.
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19
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Terrasi A, Bertolini I, Martelli C, Gaudioso G, Di Cristofori A, Storaci AM, Formica M, Bosari S, Caroli M, Ottobrini L, Vaccari T, Vaira V. Specific V-ATPase expression sub-classifies IDHwt lower-grade gliomas and impacts glioma growth in vivo. EBioMedicine 2019; 41:214-24. [PMID: 30737087 DOI: 10.1016/j.ebiom.2019.01.052] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Revised: 01/24/2019] [Accepted: 01/25/2019] [Indexed: 12/27/2022] Open
Abstract
Background Cancer cells use specific V-ATPase subunits to activate oncogenic pathways. Therefore, we investigated V-ATPase deregulation in aggressive gliomas and associated signaling. Methods V-ATPase genes expression and associated pathways were analyzed in different series of glioma available from public databases, as well as in patients' cohort. Activation of pathways was analyzed at gene and protein expression levels. A genetic model of glioma in Drosophila melanogaster and mice with GBM patients-derived orthotopic xenografts were used as in vivo models of disease. Findings GBM and recurrent gliomas display a specific V-ATPase signature. Such signature resolves the heterogeneous class of IDH-wild type lower-grade gliomas, identifying the patients with worse prognosis independently from clinical and molecular features (p = 0·03, by Cox proportional-hazards model). In vivo, V-ATPase subunits deregulation significantly impacts tumor growth and proliferation. At the molecular level, GBM-like V-ATPase expression correlates with upregulation of Homeobox genes. Interpretation Our data identify a V-ATPase signature that accompanies glioma aggressiveness and suggest new entry points for glioma stratification and follow-up. Fund This work was supported by Fondazione Cariplo (2014–1148 to VV), Fondazione IRCCS Ca' Granda, and Fondazione INGM Grant in Molecular Medicine 2014 (to VV).
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Gross V, Treffkorn S, Reichelt J, Epple L, Lüter C, Mayer G. Miniaturization of tardigrades (water bears): Morphological and genomic perspectives. Arthropod Struct Dev 2019; 48:12-19. [PMID: 30447338 DOI: 10.1016/j.asd.2018.11.006] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 11/08/2018] [Accepted: 11/13/2018] [Indexed: 05/03/2023]
Abstract
Tardigrades form a monophyletic group of microscopic ecdysozoans best known for surviving extreme environmental conditions. Due to their key phylogenetic position as a subgroup of the Panarthropoda, understanding tardigrade biology is important for comparative studies with related groups like Arthropoda. Panarthropods - and Ecdysozoa as a whole - likely evolved from macroscopic ancestors, with several taxa becoming secondarily miniaturized. Morphological and genomic evidence likewise points to a miniaturized tardigrade ancestor. The five-segmented tardigrade body typically measures less than 1 mm in length and consists of only about 1000 cells. Most organs comprise a relatively small number of cells, with the highest proportion belonging to the central nervous system, while muscles are reduced to a single cell each. Similarly, fully sequenced genomes of three tardigrade species - together with Hox gene expression data - point to extensive modifications, rearrangements, and major losses of genes and even a large body region. Parallels are evident with related ecdysozoans that may have also undergone genomic reductions, such as the nematode Caenorhabditis elegans. We interpret these data together as evidence of miniaturization in the tardigrade lineage, while cautioning that the effects of miniaturization may manifest in different ways depending on the organ or organ system under examination.
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Affiliation(s)
- Vladimir Gross
- Department of Zoology, Institute of Biology, University of Kassel, Heinrich-Plett-Straße 40, Kassel, D-34132, Germany
| | - Sandra Treffkorn
- Department of Zoology, Institute of Biology, University of Kassel, Heinrich-Plett-Straße 40, Kassel, D-34132, Germany
| | - Julian Reichelt
- Department of Zoology, Institute of Biology, University of Kassel, Heinrich-Plett-Straße 40, Kassel, D-34132, Germany
| | - Lisa Epple
- Department of Zoology, Institute of Biology, University of Kassel, Heinrich-Plett-Straße 40, Kassel, D-34132, Germany
| | - Carsten Lüter
- Museum für Naturkunde, Leibniz-Institute for Evolution and Biodiversity Science, Invalidenstraße 43, Berlin, D-10115, Germany
| | - Georg Mayer
- Department of Zoology, Institute of Biology, University of Kassel, Heinrich-Plett-Straße 40, Kassel, D-34132, Germany.
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Miksiunas R, Mobasheri A, Bironaite D. Homeobox Genes and Homeodomain Proteins: New Insights into Cardiac Development, Degeneration and Regeneration. Adv Exp Med Biol 2019; 1212:155-178. [PMID: 30945165 DOI: 10.1007/5584_2019_349] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Cardiovascular diseases are the most common cause of human death in the developing world. Extensive evidence indicates that various toxic environmental factors and unhealthy lifestyle choices contribute to the risk, incidence and severity of cardiovascular diseases. Alterations in the genetic level of myocardium affects normal heart development and initiates pathological processes leading to various types of cardiac diseases. Homeobox genes are a large and highly specialized family of closely related genes that direct the formation of body structure, including cardiac development. Homeobox genes encode homeodomain proteins that function as transcription factors with characteristic structures that allow them to bind to DNA, regulate gene expression and subsequently control the proper physiological function of cells, tissues and organs. Mutations in homeobox genes are rare and usually lethal with evident alterations in cardiac function at or soon after the birth. Our understanding of homeobox gene family expression and function has expanded significantly during the recent years. However, the involvement of homeobox genes in the development of human and animal cardiac tissue requires further investigation. The phenotype of human congenital heart defects unveils only some aspects of human heart development. Therefore, mouse models are often used to gain a better understanding of human heart function, pathology and regeneration. In this review, we have focused on the role of homeobox genes in the development and pathology of human heart as potential tools for the future development of targeted regenerative strategies for various heart malfunctions.
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Affiliation(s)
- Rokas Miksiunas
- Department of Regenerative Medicine, State Research Institute Centre for Innovative Medicine, Vilnius, Lithuania
| | - Ali Mobasheri
- Department of Regenerative Medicine, State Research Institute Centre for Innovative Medicine, Vilnius, Lithuania
| | - Daiva Bironaite
- Department of Regenerative Medicine, State Research Institute Centre for Innovative Medicine, Vilnius, Lithuania.
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22
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Treffkorn S, Kahnke L, Hering L, Mayer G. Expression of NK cluster genes in the onychophoran Euperipatoides rowelli: implications for the evolution of NK family genes in nephrozoans. EvoDevo 2018; 9:17. [PMID: 30026904 PMCID: PMC6050708 DOI: 10.1186/s13227-018-0105-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Accepted: 07/06/2018] [Indexed: 02/05/2023] Open
Abstract
Background Understanding the evolution and development of morphological traits of the last common bilaterian ancestor is a major goal of the evo-devo discipline. The reconstruction of this "urbilaterian" is mainly based on comparative studies of common molecular patterning mechanisms in recent model organisms. The NK homeobox genes are key players in many of these molecular pathways, including processes regulating mesoderm, heart and neural development. Shared features seen in the expression patterns of NK genes have been used to determine the ancestral bilaterian characters. However, the commonly used model organisms provide only a limited view on the evolution of these molecular pathways. To further investigate the ancestral roles of NK cluster genes, we analyzed their expression patterns in the onychophoran Euperipatoides rowelli. Results We identified nine transcripts of NK cluster genes in E. rowelli, including single copies of NK1, NK3, NK4, NK5, Msx, Lbx and Tlx, and two copies of NK6. All of these genes except for NK6.1 and NK6.2 are expressed in different mesodermal organs and tissues in embryos of E. rowelli, including the anlagen of somatic musculature and the heart. Furthermore, we found distinct expression patterns of NK3, NK5, NK6, Lbx and Msx in the developing nervous system. The same holds true for the NKL gene NK2.2, which does not belong to the NK cluster but is a related gene playing a role in neural patterning. Surprisingly, NK1, Msx and Lbx are additionally expressed in a segment polarity-like pattern early in development-a feature that has been otherwise reported only from annelids. Conclusion Our results indicate that the NK cluster genes were involved in mesoderm and neural development in the last common ancestor of bilaterians or at least nephrozoans (i.e., bilaterians to the exclusion of xenacoelomorphs). By comparing our data from an onychophoran to those from other bilaterians, we critically review the hypothesis of a complex "urbilaterian" with a segmented body, a pulsatile organ or heart, and a condensed mediolaterally patterned nerve cord.
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Affiliation(s)
- Sandra Treffkorn
- Department of Zoology, Institute of Biology, University of Kassel, Heinrich-Plett-Str. 40, 34132 Kassel, Germany
| | - Laura Kahnke
- Department of Zoology, Institute of Biology, University of Kassel, Heinrich-Plett-Str. 40, 34132 Kassel, Germany
| | - Lars Hering
- Department of Zoology, Institute of Biology, University of Kassel, Heinrich-Plett-Str. 40, 34132 Kassel, Germany
| | - Georg Mayer
- Department of Zoology, Institute of Biology, University of Kassel, Heinrich-Plett-Str. 40, 34132 Kassel, Germany
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Que F, Wang GL, Li T, Wang YH, Xu ZS, Xiong AS. Genome-wide identification, expansion, and evolution analysis of homeobox genes and their expression profiles during root development in carrot. Funct Integr Genomics 2018; 18:685-700. [PMID: 29909521 DOI: 10.1007/s10142-018-0624-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Revised: 06/05/2018] [Accepted: 06/07/2018] [Indexed: 01/31/2023]
Abstract
The homeobox gene family, a large family represented by transcription factors, has been implicated in secondary growth, early embryo patterning, and hormone response pathways in plants. However, reports about the information and evolutionary history of the homeobox gene family in carrot are limited. In the present study, a total of 130 homeobox family genes were identified in the carrot genome. Specific codomain and phylogenetic analyses revealed that the genes were classified into 14 subgroups. Whole genome and proximal duplication participated in the homeobox gene family expansion in carrot. Purifying selection also contributed to the evolution of carrot homeobox genes. In Gene Ontology (GO) analysis, most members of the HD-ZIP III and IV subfamilies were found to have a lipid binding (GO:0008289) term. Most HD-ZIP III and IV genes also harbored a steroidogenic acute regulatory protein-related lipid transfer (START) domain. These results suggested that the HD-ZIP III and IV subfamilies might be related to lipid transfer. Transcriptome and quantitative real-time PCR (RT-qPCR) data indicated that members of the WOX and KNOX subfamilies were likely implicated in carrot root development. Our study provided a useful basis for further studies on the complexity and function of the homeobox gene family in carrot.
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Affiliation(s)
- Feng Que
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Guang-Long Wang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Tong Li
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Ya-Hui Wang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Zhi-Sheng Xu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Ai-Sheng Xiong
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, China.
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Rejlova K, Musilova A, Kramarzova KS, Zaliova M, Fiser K, Alberich-Jorda M, Trka J, Starkova J. Low HOX gene expression in PML-RARα-positive leukemia results from suppressed histone demethylation. Epigenetics 2018; 13:73-84. [PMID: 29224413 DOI: 10.1080/15592294.2017.1413517] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Abstract
Homeobox (HOX) genes are frequently dysregulated in leukemia. Previous studies have shown that aberrant HOX gene expression accompanies leukemogenesis and affects disease progression and leukemia patient survival. Patients with acute myeloid leukemia (AML) bearing PML-RARα fusion gene have distinct HOX gene signature in comparison to other subtypes of AML patients, although the mechanism of transcription regulation is not completely understood. We previously found an association between the mRNA levels of HOX genes and those of the histone demethylases JMJD3 and UTX in PML-RARα- positive leukemia patients. Here, we demonstrate that the release of the PML-RARα-mediated block in PML-RARα-positive myeloid leukemia cells increased both JMJD3 and HOX gene expression, while inhibition of JMJD3 using the specific inhibitor GSK-J4 reversed the effect. This effect was driven specifically through PML-RARα fusion protein since expression changes did not occur in cells with mutated RARα and was independent of differentiation. We confirmed that gene expression levels were inversely correlated with alterations in H3K27me3 histone marks localized at HOX gene promoters. Furthermore, data from chromatin immunoprecipitation followed by sequencing broaden a list of clustered HOX genes regulated by JMJD3 in PML-RARα-positive leukemic cells. Interestingly, the combination of GSK-J4 and all-trans retinoic acid (ATRA) significantly increased PML-RARα-positive cell apoptosis compared with ATRA treatment alone. This effect was also observed in ATRA-resistant NB4 clones, which may provide a new therapeutic opportunity for patients with acute promyelocytic leukemia (APL) resistant to current treatment. The results of our study reveal the mechanism of HOX gene expression regulation and contribute to our understanding of APL pathogenesis.
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Affiliation(s)
- Katerina Rejlova
- a CLIP - Childhood Leukaemia Investigation Prague.,b Department of Pediatric Hematology and Oncology , Second Faculty of Medicine, Charles University , Prague , Czech Republic
| | - Alena Musilova
- a CLIP - Childhood Leukaemia Investigation Prague.,b Department of Pediatric Hematology and Oncology , Second Faculty of Medicine, Charles University , Prague , Czech Republic
| | - Karolina Skvarova Kramarzova
- a CLIP - Childhood Leukaemia Investigation Prague.,b Department of Pediatric Hematology and Oncology , Second Faculty of Medicine, Charles University , Prague , Czech Republic
| | - Marketa Zaliova
- a CLIP - Childhood Leukaemia Investigation Prague.,b Department of Pediatric Hematology and Oncology , Second Faculty of Medicine, Charles University , Prague , Czech Republic
| | - Karel Fiser
- a CLIP - Childhood Leukaemia Investigation Prague.,b Department of Pediatric Hematology and Oncology , Second Faculty of Medicine, Charles University , Prague , Czech Republic
| | | | - Jan Trka
- a CLIP - Childhood Leukaemia Investigation Prague.,b Department of Pediatric Hematology and Oncology , Second Faculty of Medicine, Charles University , Prague , Czech Republic.,c University Hospital Motol , Prague , Czech Republic
| | - Julia Starkova
- a CLIP - Childhood Leukaemia Investigation Prague.,b Department of Pediatric Hematology and Oncology , Second Faculty of Medicine, Charles University , Prague , Czech Republic
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Ramanathan A, Srijaya TC, Sukumaran P, Zain RB, Abu Kasim NH. Homeobox genes and tooth development: Understanding the biological pathways and applications in regenerative dental science. Arch Oral Biol 2017; 85:23-39. [PMID: 29031235 DOI: 10.1016/j.archoralbio.2017.09.033] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Revised: 09/27/2017] [Accepted: 09/30/2017] [Indexed: 12/31/2022]
Abstract
OBJECTIVES Homeobox genes are a group of conserved class of transcription factors that function as key regulators during the embryonic developmental processes. They act as master regulator for developmental genes, which involves coordinated actions of various auto and cross-regulatory mechanisms. In this review, we summarize the expression pattern of homeobox genes in relation to the tooth development and various signaling pathways or molecules contributing to the specific actions of these genes in the regulation of odontogenesis. MATERIALS AND METHODS An electronic search was undertaken using combination of keywords e.g. Homeobox genes, tooth development, dental diseases, stem cells, induced pluripotent stem cells, gene control region was used as search terms in PubMed and Web of Science and relevant full text articles and abstract were retrieved that were written in English. A manual hand search in text books were also carried out. Articles related to homeobox genes in dentistry and tissue engineering and regenerative medicine of odontogenesis were selected. RESULTS The possible perspective of stem cells technology in odontogenesis and subsequent analysis of gene correction pertaining to dental disorders through the possibility of induced pluripotent stem cells technology is also inferred. CONCLUSIONS We demonstrate the promising role of tissue engineering and regenerative medicine on odontogenesis, which can generate a new ray of hope in the field of dental science.
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Affiliation(s)
- Anand Ramanathan
- Oral Cancer Research and Coordinating Center, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia; Department of Oral & Maxillofacial Clinical Science, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia.
| | | | - Prema Sukumaran
- Department of Restorative Dentistry, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia.
| | - Rosnah Binti Zain
- Oral Cancer Research and Coordinating Center, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia; Department of Oral & Maxillofacial Clinical Science, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia; Faculty of Dentistry, MAHSA University, Jenjarom, Selangor, Malaysia.
| | - Noor Hayaty Abu Kasim
- Department of Restorative Dentistry, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia.
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Passaro A, Miselli MA, Sanz JM, Dalla Nora E, Morieri ML, Colonna R, Pišot R, Zuliani G. Gene expression regional differences in human subcutaneous adipose tissue. BMC Genomics 2017; 18:202. [PMID: 28231762 PMCID: PMC5324328 DOI: 10.1186/s12864-017-3564-2] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2016] [Accepted: 02/07/2017] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Accumulation of visceral adipose tissue (VAT) is clearly associated with an increased risk of obesity-related diseases and all-cause mortality, whereas gluteal subcutaneous fat accumulation (g-SAT) is associated with a lower risk. The relative contribution, in term of cardiovascular risk, of abdominal subcutaneous adipose tissue (a-SAT) is still controversial with studies showing both a detrimental effect and a protective role. Animal and in vitro studies demonstrated that adipocytes from visceral and subcutaneous depots have distinct morphological, metabolic and functional characteristics. These regional differences have a key role in the pathogenesis of obesity-related diseases. There is recent evidence that differentiation between upper-body and lower-body adipose tissues might be under control of site-specific sets of developmental genes, such as Homebox (HOX) genes, a group of related genes that control the body plan of an embryo along the anterior-posterior axis. However, the possible heterogeneity between different subcutaneous regions has not been extensively investigated. Here we studied global mRNA expression in g-SAT and a-SAT with a microarray approach. RNA was isolated from g-SAT and a-SAT biopsy, from eight healthy subjects, and hybridized on RNA microarray chips in order to detect regional differences in gene expression. RESULTS A total of 131 genes are significantly and differently (>1.5 fold change, p < 0.05) expressed in a-SAT and g-SAT. Expression profiling reveals significant differences in expression of several HOX genes. Interestingly, two molecular signature of visceral adipocyte lineage, homebox genes HOXA5 and NR2F1, are up-regulated in a-SAT versus g-SAT by a 2.5 fold change. CONCLUSIONS Our study shows that g-SAT and a-SAT have distinct expression profiles. The finding of a different expression of HOX genes, fundamental during the embryo development, suggests an early regional differentiation of subcutaneous adipose depots. Moreover, the higher expression of HOXA5 and NR2F1, two molecular signatures of visceral adipocytes, in a-SAT suggests that this subcutaneous adipose depot could be more similar to VAT than g-SAT. Our data suggest that we should look at SAT as composed of distinct depots with possibly different impact in obesity associated metabolic complications.
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Affiliation(s)
- Angelina Passaro
- Azienda Ospedaliero Universitaria di Ferrara, Ferrara, Italy. .,Department of Medical Sciences, Section of Internal Medicine and CardioRespiratory, University of Ferrara, Ferrara, Italy.
| | - Maria Agata Miselli
- Azienda Ospedaliero Universitaria di Ferrara, Ferrara, Italy.,Department of Medical Sciences, Section of Internal Medicine and CardioRespiratory, University of Ferrara, Ferrara, Italy
| | - Juana Maria Sanz
- Department of Medical Sciences, Section of Internal Medicine and CardioRespiratory, University of Ferrara, Ferrara, Italy
| | - Edoardo Dalla Nora
- Azienda Ospedaliero Universitaria di Ferrara, Ferrara, Italy.,Department of Medical Sciences, Section of Internal Medicine and CardioRespiratory, University of Ferrara, Ferrara, Italy
| | - Mario Luca Morieri
- Azienda Ospedaliero Universitaria di Ferrara, Ferrara, Italy.,Department of Medical Sciences, Section of Internal Medicine and CardioRespiratory, University of Ferrara, Ferrara, Italy
| | - Rossella Colonna
- Azienda Ospedaliero Universitaria di Ferrara, Ferrara, Italy.,Department of Medical Sciences, Section of Internal Medicine and CardioRespiratory, University of Ferrara, Ferrara, Italy
| | - Rado Pišot
- Science and Research Centre, University of Primorska, Koper, 6000, Slovenia
| | - Giovanni Zuliani
- Azienda Ospedaliero Universitaria di Ferrara, Ferrara, Italy.,Department of Medical Sciences, Section of Internal Medicine and CardioRespiratory, University of Ferrara, Ferrara, Italy
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Shah M, Cardenas R, Wang B, Persson J, Mongan NP, Grabowska A, Allegrucci C. HOXC8 regulates self-renewal, differentiation and transformation of breast cancer stem cells. Mol Cancer 2017; 16:38. [PMID: 28202042 PMCID: PMC5312582 DOI: 10.1186/s12943-017-0605-z] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Accepted: 01/23/2017] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Homeobox genes are master regulators of cell fate during embryonic development and their expression is altered in cancer. By regulating the balance between cell proliferation and differentiation, they maintain homeostasis of normal tissues. Here, we screened the expression of homeobox genes in mammary stem cells to establish their role in stem cells transformation in breast cancer. METHODS Using a Homeobox Genes PCR array, we screened 83 homeobox genes in normal cancer breast stem/progenitor cells isolated by flow cytometry. The candidate gene HOXC8 epigenetic regulation was studied by DNA methylation and miRNA expression analyses. Self-renewal and differentiation of HOXC8-overexpressing or knockdown cells were assessed by flow cytometry and mammosphere, 3D matrigel and soft agar assays. Clinical relevance of in vitro findings were validated by bioinformatics analysis of patient datasets from TCGA and METABRIC studies. RESULTS In this study we demonstrate altered expression of homeobox genes in breast cancer stem/progenitor cells. HOXC8 was consistently downregulated in stem/progenitor cells of all breast molecular subtypes, thus representing an interesting tumour suppressor candidate. We show that downregulated expression of HOXC8 is associated with DNA methylation at the gene promoter and expression of miR196 family members. Functional studies demonstrated that HOXC8 gain of function induces a decrease in the CD44+/CD24-/low cancer stem cell population and proportion of chemoresistant cells, with a concomitant increase in CD24+ differentiated cells. Increased HOXC8 levels also decrease the ability of cancer cells to form mammospheres and to grow in anchorage-independent conditions. Furthermore, loss of HOXC8 in non-tumorigenic mammary epithelial cells expands the cancer stem/progenitor cells pool, increases stem cell self-renewal, prevents differentiation induced by retinoic acid and induces a transformed phenotype. CONCLUSIONS Taken together, our study points to an important role of homeobox genes in breast cancer stem/progenitor cell function and establishes HOXC8 as a suppressor of stemness and transformation in the mammary gland lineage.
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Affiliation(s)
- Mansi Shah
- SVMS, University of Nottingham, Sutton Bonington Campus, Loughborough, LE12 5RD, UK
| | - Ryan Cardenas
- SVMS, University of Nottingham, Sutton Bonington Campus, Loughborough, LE12 5RD, UK
| | - Belinda Wang
- SVMS, University of Nottingham, Sutton Bonington Campus, Loughborough, LE12 5RD, UK
| | - Jenny Persson
- Department of Translational Medicine, Lund University, Malmö, 205 02, Sweden.,Department of Molecular Biology, Umeå University, 901 87, Umeå, Sweden
| | - Nigel P Mongan
- SVMS, University of Nottingham, Sutton Bonington Campus, Loughborough, LE12 5RD, UK.,Department of Pharmacology, Weill Cornell Medicine, 1300 York Ave., New York, NY, 10065, USA
| | - Anna Grabowska
- Cancer Biology, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, QMC, Nottingham, NG7 2UH, UK
| | - Cinzia Allegrucci
- SVMS, University of Nottingham, Sutton Bonington Campus, Loughborough, LE12 5RD, UK.
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Rodrigues MFSD, Esteves CM, Xavier FCA, Nunes FD. Methylation status of homeobox genes in common human cancers. Genomics 2016; 108:185-193. [PMID: 27826049 DOI: 10.1016/j.ygeno.2016.11.001] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Revised: 09/27/2016] [Accepted: 11/01/2016] [Indexed: 02/06/2023]
Abstract
Approximately 300 homeobox loci were identified in the euchromatic regions of the human genome, of which 235 are probable functional genes and 65 are likely pseudogenes. Many of these genes play important roles in embryonic development and cell differentiation. Dysregulation of homeobox gene expression is a frequent occurrence in cancer. Accumulating evidence suggests that as genetics disorders, epigenetic modifications alter the expression of oncogenes and tumor suppressor genes driving tumorigenesis and perhaps play a more central role in the evolution and progression of this disease. Here, we described the current knowledge regarding homeobox gene DNA methylation in human cancer and describe its relevance in the diagnosis, therapeutic response and prognosis of different types of human cancers.
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Affiliation(s)
| | | | | | - Fabio Daumas Nunes
- Department of Oral Pathology, School of Dentistry, University of São Paulo, São Paulo, Brazil.
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Abstract
Homeobox genes, including HOX and non-HOX genes, have been identified to be expressed aberrantly in solid tumors. In gastrointestinal (GI) cancers, most studies have focused on the function of non-HOX genes including caudal-related homeobox transcription factor 1 (CDX1) and CDX2. CDX2 is a crucial factor in the development of pre-cancerous lesions such as Barrett’s esophagus or intestinal metaplasia in the stomach, and its tumor suppressive role has been investigated in colorectal cancers. Recently, several HOX genes were reported to have specific roles in GI cancers; for example, HOXA13 in esophageal squamous cell cancer and HOXB7 in stomach and colorectal cancers. HOXD10 is upregulated in colorectal cancer while it is silenced epigenetically in gastric cancer. Thus, it is essential to examine the differential expression pattern of various homeobox genes in specific tumor types or cell lineages, and understand their underlying mechanisms. In this review, we summarize the available research on homeobox genes and present their potential value for the prediction of prognosis in GI cancers.
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30
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Schaffer AA, Bazarsky M, Levy K, Chalifa-Caspi V, Gat U. A transcriptional time-course analysis of oral vs. aboral whole-body regeneration in the Sea anemone Nematostella vectensis. BMC Genomics 2016; 17:718. [PMID: 27605362 DOI: 10.1186/s12864-016-3027-1] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Accepted: 08/20/2016] [Indexed: 02/07/2023] Open
Abstract
Background The ability of regeneration is essential for the homeostasis of all animals as it allows the repair and renewal of tissues and body parts upon normal turnover or injury. The extent of this ability varies greatly in different animals with the sea anemone Nematostella vectensis, a basal cnidarian model animal, displaying remarkable whole-body regeneration competence. Results In order to study this process in Nematostella we performed an RNA-Seq screen wherein we analyzed and compared the transcriptional response to bisection in the wound-proximal body parts undergoing oral (head) or aboral (tail) regeneration at several time points up to the initial restoration of the basic body shape. The transcriptional profiles of regeneration responsive genes were analyzed so as to define the temporal pattern of differential gene expression associated with the tissue-specific oral and aboral regeneration. The identified genes were characterized according to their GO (gene ontology) assignations revealing groups that were enriched in the regeneration process with particular attention to their affiliation to the major developmental signaling pathways. While some of the genes and gene groups thus analyzed were previously known to be active in regeneration, we have also revealed novel and surprising candidate genes such as cilia-associated genes that likely participate in this important developmental program. Conclusions This work highlighted the main groups of genes which showed polarization upon regeneration, notably the proteinases, multiple transcription factors and the Wnt pathway genes that were highly represented, all displaying an intricate temporal balance between the two sides. In addition, the evolutionary comparison performed between regeneration in different animal model systems may reveal the basic mechanisms playing a role in this fascinating process. Electronic supplementary material The online version of this article (doi:10.1186/s12864-016-3027-1) contains supplementary material, which is available to authorized users.
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Se YB, Kim SH, Kim JY, Kim JE, Dho YS, Kim JW, Kim YH, Woo HG, Kim SH, Kang SH, Kim HJ, Kim TM, Lee ST, Choi SH, Park SH, Kim IH, Kim DG, Park CK. Underexpression of HOXA11 Is Associated with Treatment Resistance and Poor Prognosis in Glioblastoma. Cancer Res Treat 2016; 49:387-398. [PMID: 27456940 PMCID: PMC5398402 DOI: 10.4143/crt.2016.106] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Accepted: 06/30/2016] [Indexed: 12/16/2022] Open
Abstract
Purpose Homeobox (HOX) genes are essential developmental regulators that should normally be in the silenced state in an adult brain. The aberrant expression of HOX genes has been associated with the prognosis of many cancer types, including glioblastoma (GBM). This study examined the identity and role of HOX genes affecting GBM prognosis and treatment resistance. Materials and Methods The full series of HOX genes of five pairs of initial and recurrent human GBM samples were screened by microarray analysis to determine the most plausible candidate responsible for GBM prognosis. Another 20 newly diagnosed GBM samples were used for prognostic validation. In vitro experiments were performed to confirm the role of HOX in treatment resistance. Mediators involved in HOX gene regulation were searched using differentially expressed gene analysis, gene set enrichment tests, and network analysis. Results The underexpression of HOXA11 was identified as a consistent signature for a poor prognosis among the HOX genes. The overall survival of the GBM patients indicated a significantly favorable prognosis in patients with high HOXA11 expression (31±15.3 months) compared to the prognoses in thosewith low HOXA11 expression (18±7.3 months, p=0.03). When HOXA11 was suppressed in the GBM cell lines, the anticancer effect of radiotherapy and/or temozolomide declined. In addition, five candidate mediators (TGFBR2, CRIM1, TXNIP, DPYSL2, and CRMP1) that may confer an oncologic effect after HOXA11 suppression were identified. Conclusion The treatment resistance induced by the underexpression of HOXA11 can contribute to a poor prognosis in GBM. Further investigation will be needed to confirm the value of HOXA11 as a potential target for overcoming the treatment resistance by developing chemo- or radiosensitizers.
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Affiliation(s)
- Young-Bem Se
- Department of Neurosurgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Seung Hyun Kim
- Department of Neurosurgery, Seoul National University College of Medicine, Seoul, Korea
| | - Ji Young Kim
- Department of Neurosurgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Ja Eun Kim
- Department of Neurosurgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Yun-Sik Dho
- Department of Neurosurgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Jin Wook Kim
- Department of Neurosurgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Yong Hwy Kim
- Department of Neurosurgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Hyun Goo Woo
- Department of Physiology, Ajou University School of Medicine, Suwon, Korea
| | - Se-Hyuk Kim
- Department of Neurosurgery, Ajou University School of Medicine, Suwon, Korea
| | - Shin-Hyuk Kang
- Department of Neurosurgery, Korea University College of Medicine, Seoul, Korea
| | - Hak Jae Kim
- Department of Radiation Oncology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Tae Min Kim
- Department of Internal Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Soon-Tae Lee
- Department of Neurology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Seung Hong Choi
- Department of Radiology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Sung-Hye Park
- Department of Pathology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Il Han Kim
- Department of Radiation Oncology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Dong Gyu Kim
- Department of Neurosurgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea.,Department of Neurosurgery, Seoul National University College of Medicine, Seoul, Korea
| | - Chul-Kee Park
- Department of Neurosurgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea.,Department of Neurosurgery, Seoul National University College of Medicine, Seoul, Korea
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Hulin JA, Nguyen TDT, Cui S, Marri S, Yu RT, Downes M, Evans RM, Makarenkova H, Meech R. Barx2 and Pax7 Regulate Axin2 Expression in Myoblasts by Interaction with β-Catenin and Chromatin Remodelling. Stem Cells 2016; 34:2169-82. [PMID: 27144473 PMCID: PMC5019118 DOI: 10.1002/stem.2396] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Revised: 02/15/2016] [Accepted: 04/14/2016] [Indexed: 12/13/2022]
Abstract
Satellite cells are the resident stem cells of skeletal muscle; quiescent in adults until activated by injury to generate proliferating myoblasts. The canonical Wnt signalling pathway, mediated by T-cell factor/lymphoid enhancer factor (TCF/LEF) and β-catenin effector proteins, controls myoblast differentiation in vitro, and recent work suggests that timely termination of the Wnt/β-catenin signal is important for normal adult myogenesis. We recently identified the Barx2 and Pax7 homeobox proteins as novel components of the Wnt effector complex. Here, we examine molecular and epigenetic mechanisms by which Barx2 and Pax7 regulate the canonical Wnt target gene Axin2, which mediates critical feedback to terminate the transcriptional response to Wnt signals. Barx2 is recruited to the Axin2 gene via TCF/LEF binding sites, recruits β-catenin and the coactivator GRIP-1, and induces local H3K-acetylation. Barx2 also promotes nuclear localization of β-catenin. Conversely, Pax7 represses Axin2 promoter/intron activity and inhibits Barx2-mediated H3K-acetylation via the corepressor HDAC1. Wnt3a not only induces Barx2 mRNA, but also stabilises Barx2 protein in myoblasts; conversely, Wnt3a potently inhibits Pax7 protein expression. As Barx2 promotes myogenic differentiation and Pax7 suppresses it, this novel posttranscriptional regulation of Barx2 and Pax7 by Wnt3a may be involved in the specification of differentiation-competent and -incompetent myoblast populations. Finally, we propose a model for dual function of Barx2 downstream of Wnt signals: activation of myogenic target genes in association with canonical myogenic regulatory factors, and regulation of the negative feedback loop that limits the response of myoblasts to Wnt signals via direct interaction of Barx2 with the TCF/β-catenin complex. Stem Cells 2016;34:2169-2182.
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Affiliation(s)
- Julie-Ann Hulin
- Department of Clinical Pharmacology, Flinders University, Bedford Park, South Australia, Australia
| | - Thi Diem Tran Nguyen
- Department of Clinical Pharmacology, Flinders University, Bedford Park, South Australia, Australia.,Centre for Cancer Biology, University of South Australia, Adelaide, South Australia, Australia
| | - Shuang Cui
- Department of Clinical Pharmacology, Flinders University, Bedford Park, South Australia, Australia
| | - Shashikanth Marri
- Department of Molecular Medicine, Flinders University, Bedford Park, South Australia, Australia
| | - Ruth T Yu
- Gene Expression Laboratory, Salk Institute, La Jolla, California, USA
| | - Michael Downes
- Gene Expression Laboratory, Salk Institute, La Jolla, California, USA
| | - Ronald M Evans
- Gene Expression Laboratory, Salk Institute, La Jolla, California, USA.,Howard Hughes Medical Institute, Salk Institute, La Jolla, California, USA
| | - Helen Makarenkova
- Department of Cell Biology, The Scripps Research Institute, La Jolla, California, USA
| | - Robyn Meech
- Department of Clinical Pharmacology, Flinders University, Bedford Park, South Australia, Australia
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Wollesen T, Rodríguez Monje SV, McDougall C, Degnan BM, Wanninger A. The ParaHox gene Gsx patterns the apical organ and central nervous system but not the foregut in scaphopod and cephalopod mollusks. EvoDevo 2015; 6:41. [PMID: 26715985 PMCID: PMC4693441 DOI: 10.1186/s13227-015-0037-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Accepted: 12/17/2015] [Indexed: 11/21/2022] Open
Abstract
Background It has been hypothesized that the ParaHox gene Gsx patterned the foregut of the last common bilaterian ancestor. This notion was corroborated by Gsx expression in three out of four lophotrochozoan species, several ecdysozoans, and some deuterostomes. Remarkably, Gsx is also expressed in the bilaterian anterior-most central nervous system (CNS) and the gastropod and annelid apical organ. To infer whether these findings are consistent with other mollusks or even lophotrochozoans, we investigated Gsx expression in developmental stages of representatives of two other molluscan classes, the scaphopod Antalis entalis and the cephalopod Idiosepius notoides. Results Gsx is not expressed in the developing digestive tract of Antalis entalis and Idiosepius notoides. Instead, it is expressed in cells of the apical organ in the scaphopod trochophore and in two cells adjacent to this organ. Late-stage trochophores express Aen-Gsx in cells of the developing cerebral and pedal ganglia and in cells close to the pavilion, mantle, and foot. In postmetamorphic specimens, Aen-Gsx is expressed in the cerebral and pedal ganglia, the foot, and the nascent captacula. In early squid embryos, Ino-Gsx is expressed in the cerebral, palliovisceral, and optic ganglia. In late-stage embryos, Ino-Gsx is additionally expressed close to the eyes and in the supraesophageal and posterior subesophageal masses and optic lobes. Developmental stages close to hatching express Ino-Gsx only close to the eyes. Conclusions Our results suggest that Gsx expression in the foregut might not be a plesiomorphic trait of the Lophotrochozoa as insinuated previously. Since neither ecdysozoans nor deuterostomes express Gsx in their gut, a role in gut formation in the last common bilaterian ancestor appears unlikely. Gsx is consistently expressed in the bilaterian anterior-most CNS and the apical organ of lophotrochozoan larvae, suggesting a recruitment of Gsx into the formation of this organ in the Lophotrochozoa. The cephalopod posterior subesophageal mass and optic ganglia and the scaphopod pedal ganglia also express Gsx. In summary, Gsx expression only appears to be conserved in the anterior-most brain region during evolution. Accordingly, Gsx appears to have been recruited into the formation of other expression domains, e.g., the apical organ or the foregut, in some lophotrochozoans.
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Affiliation(s)
- Tim Wollesen
- Department of Integrative Zoology, Faculty of Life Sciences, University of Vienna, 1090 Vienna, Austria
| | | | - Carmel McDougall
- School of Biological Sciences, The University of Queensland, Brisbane, QLD 4072 Australia
| | - Bernard M Degnan
- School of Biological Sciences, The University of Queensland, Brisbane, QLD 4072 Australia
| | - Andreas Wanninger
- Department of Integrative Zoology, Faculty of Life Sciences, University of Vienna, 1090 Vienna, Austria
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Candini O, Spano C, Murgia A, Grisendi G, Veronesi E, Piccinno MS, Ferracin M, Negrini M, Giacobbi F, Bambi F, Horwitz EM, Conte P, Paolucci P, Dominici M. Mesenchymal progenitors aging highlights a miR-196 switch targeting HOXB7 as master regulator of proliferation and osteogenesis. Stem Cells 2015; 33:939-50. [PMID: 25428821 DOI: 10.1002/stem.1897] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2014] [Revised: 10/23/2014] [Accepted: 11/01/2014] [Indexed: 12/12/2022]
Abstract
Human aging is associated with a decrease in tissue functions combined with a decline in stem cells frequency and activity followed by a loss of regenerative capacity. The molecular mechanisms behind this senescence remain largely obscure, precluding targeted approaches to counteract aging. Focusing on mesenchymal stromal/stem cells (MSC) as known adult progenitors, we identified a specific switch in miRNA expression during aging, revealing a miR-196a upregulation which was inversely correlated with MSC proliferation through HOXB7 targeting. A forced HOXB7 expression was associated with an improved cell growth, a reduction of senescence, and an improved osteogenesis linked to a dramatic increase of autocrine basic fibroblast growth factor secretion. These findings, along with the progressive decrease of HOXB7 levels observed during skeletal aging in mice, indicate HOXB7 as a master factor driving progenitors behavior lifetime, providing a better understanding of bone senescence and leading to an optimization of MSC performance.
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Affiliation(s)
- Olivia Candini
- Department of Medical and Surgical Sciences for Children & Adults, University-Hospital of Modena and Reggio Emilia, Modena, Italy
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Jeddy N, Radhika T, Nithya S, Krithika C, Prabakar R. Single Rooted Permanent Premolars and Molars - A Rare Clinical Presentation Confirmed using Cone Beam Computed Tomography. J Clin Diagn Res 2015; 9:ZD15-7. [PMID: 26436065 DOI: 10.7860/jcdr/2015/13592.6396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Accepted: 07/06/2015] [Indexed: 11/24/2022]
Abstract
The morphology of the root and root canal system plays a significant role in the treatment outcome of endodontic procedures. The necessity of clear and high contrast images for tissues like bone and teeth has made the usage of newer imaging techniques inevitable. This is a rare case report wherein, the permanent posterior dentition of both arches was single rooted. While sporadic cases of single rooted teeth have been reported, it is rare for all the premolars and molars to show such variation. This rare clinical observation has been enhanced by Cone Beam Computed Tomography (CBCT), which provides a clear image with added benefits of 3D (Three Dimensional) image reconstruction, low dosage and rapid scan time.
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Affiliation(s)
- Nadeem Jeddy
- Professor and Head, Department of Oral Pathology and Microbiology, Thai Moogambigai Dental College and Hospital , Golden George Nagar, Chennai, India
| | - T Radhika
- Reader, Department of Oral Pathology and Microbiology, Thai Moogambigai Dental College and Hospital , Golden George Nagar, Chennai, India
| | - S Nithya
- Senior lecturer, Department of Oral Pathology and Microbiology, Thai Moogambigai Dental College and Hospital , Golden George Nagar, Chennai, India
| | - C Krithika
- Professor, Department of Oral Medicine and Radiology, Thai Moogambigai Dental College and Hospital , Golden George Nagar, Chennai, India
| | - Ramachandra Prabakar
- Professor and Head, Department of Orthodontia, Thai Moogambigai Dental College and Hospital , Golden George Nagar, Chennai, India
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Cai JQ, Xu XW, Mou YP, Chen K, Pan Y, Wu D. Upregulation of HOXB7 promotes the tumorigenesis and progression of gastric cancer and correlates with clinical characteristics. Tumour Biol. 2016;37:1641-1650. [PMID: 26307396 DOI: 10.1007/s13277-015-3948-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Accepted: 08/18/2015] [Indexed: 12/27/2022] Open
Abstract
Several examples of aberrant homeobox gene expression have been found across a range of cancers, and it is also confirmed that homeobox genes play a critical roles in tumorigenesis and progression. Notwithstanding homeobox B7 (HOXB7) has been documented that its deregulation promotes carcinogenesis and development in gastrointestinal tract, its function in gastric cancer has not been investigated. In this study, HOXB7 expression was examined to be distinctly upregulated in gastric carcinoma GC cell lines and in the tumor relative to normal gastric tissue. High HOXB7 expression was correlated with tumor differentiation (P = 0.025) and TNM stage (P = 0.008). HOXB7 knockdown in BGC-823 and SGC-7901 resulted in decreased migration and invasion with alteration of epithelial-mesenchymal transition (EMT) proteins and influenced proliferation, apoptosis, and cell cycle. Furthermore, complementary DNA (cDNA) microarray, qPCR, and Western blotting were performed to explore potential downstream target genes of HOXB7. HOXB7 is generally overexpressed in GC, associated with patient clinical characteristics, and specifically promotes GC cell malignant biological properties through PIK3R3/AKT signaling pathways, indicating HOXB7 as a causal factor in promoting tumor progression.
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37
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Yong HS, Eamsobhana P, Lim PE, Razali R, Aziz FA, Rosli NSM, Poole-Johnson J, Anwar A. Draft genome of neurotropic nematode parasite Angiostrongylus cantonensis, causative agent of human eosinophilic meningitis. Acta Trop 2015; 148:51-7. [PMID: 25910624 DOI: 10.1016/j.actatropica.2015.04.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Revised: 04/09/2015] [Accepted: 04/14/2015] [Indexed: 12/11/2022]
Abstract
Angiostrongylus cantonensis is a bursate nematode parasite that causes eosinophilic meningitis (or meningoencephalitis) in humans in many parts of the world. The genomic data from A. cantonensis will form a useful resource for comparative genomic and chemogenomic studies to aid the development of diagnostics and therapeutics. We have sequenced, assembled and annotated the genome of A. cantonensis. The genome size is estimated to be ∼260 Mb, with 17,280 genomic scaffolds, 91X coverage, 81.45% for complete and 93.95% for partial score based on CEGMA analysis of genome completeness. The number of predicted genes of ≥300 bp was 17,482. A total of 7737 predicted protein-coding genes of ≥50 amino acids were identified in the assembled genome. Among the proteins of known function, kinases are the most abundant followed by transferases. The draft genome contains 34 excretory-secretory proteins (ES), a minimum of 44 Nematode Astacin (NAS) metalloproteases, 12 Homeobox (HOX) genes, and 30 neurotransmitters. The assembled genome size (260 Mb) is larger than those of Pristionchus pacificus, Caenorhabditis elegans, Necator americanus, Caenorhabditis briggsae, Trichinella spiralis, Brugia malayi and Loa loa, but smaller than Haemonchus contortus and Ascaris suum. The repeat content (25%) is similar to H. contortus. The GC content (41.17%) is lower compared to P. pacificus (42.7%) and H. contortus (43.1%) but higher compared to C. briggsae (37.69%), A. suum (37.9%) and N. americanus (40.2%) while the scaffold N50 is 42,191. This draft genome will facilitate the understanding of many unresolved issues on the parasite and the disorder it causes.
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Affiliation(s)
- Hoi-Sen Yong
- Institute of Biological Sciences, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Praphathip Eamsobhana
- Department of Parasitology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand.
| | - Phaik-Eem Lim
- Institute of Biological Sciences, University of Malaya, 50603 Kuala Lumpur, Malaysia; Institute of Ocean and Earth Sciences, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Rozaimi Razali
- Sengenics HIR, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | | | | | | | - Arif Anwar
- Sengenics HIR, University of Malaya, 50603 Kuala Lumpur, Malaysia
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Di Z, Yu Y, Wu Y, Hao P, He Y, Zhao H, Li Y, Zhao G, Li X, Li W, Cao Z. Genome-wide analysis of homeobox genes from Mesobuthus martensii reveals Hox gene duplication in scorpions. Insect Biochem Mol Biol 2015; 61:25-33. [PMID: 25910680 DOI: 10.1016/j.ibmb.2015.04.002] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Revised: 04/10/2015] [Accepted: 04/12/2015] [Indexed: 06/04/2023]
Abstract
Homeobox genes belong to a large gene group, which encodes the famous DNA-binding homeodomain that plays a key role in development and cellular differentiation during embryogenesis in animals. Here, one hundred forty-nine homeobox genes were identified from the Asian scorpion, Mesobuthus martensii (Chelicerata: Arachnida: Scorpiones: Buthidae) based on our newly assembled genome sequence with approximately 248 × coverage. The identified homeobox genes were categorized into eight classes including 82 families: 67 ANTP class genes, 33 PRD genes, 11 LIM genes, five POU genes, six SINE genes, 14 TALE genes, five CUT genes, two ZF genes and six unclassified genes. Transcriptome data confirmed that more than half of the genes were expressed in adults. The homeobox gene diversity of the eight classes is similar to the previously analyzed Mandibulata arthropods. Interestingly, it is hypothesized that the scorpion M. martensii may have two Hox clusters. The first complete genome-wide analysis of homeobox genes in Chelicerata not only reveals the repertoire of scorpion, arachnid and chelicerate homeobox genes, but also shows some insights into the evolution of arthropod homeobox genes.
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Affiliation(s)
- Zhiyong Di
- College of Life Sciences, Wuhan University, Wuhan, China; College of Life Sciences, University of Science and Technology of China, Hefei, China
| | - Yao Yu
- Key Laboratory of Synthetic Biology, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Yingliang Wu
- College of Life Sciences, Wuhan University, Wuhan, China
| | - Pei Hao
- Key Lab of Systems Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Yawen He
- College of Life Sciences, Wuhan University, Wuhan, China
| | - Huabin Zhao
- College of Life Sciences, Wuhan University, Wuhan, China
| | - Yixue Li
- Key Lab of Systems Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Guoping Zhao
- Key Laboratory of Synthetic Biology, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Xuan Li
- Key Lab of Systems Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China.
| | - Wenxin Li
- College of Life Sciences, Wuhan University, Wuhan, China.
| | - Zhijian Cao
- College of Life Sciences, Wuhan University, Wuhan, China.
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Sheikh BN, Downer NL, Kueh AJ, Thomas T, Voss AK. Excessive versus physiologically relevant levels of retinoic acid in embryonic stem cell differentiation. Stem Cells 2015; 32:1451-8. [PMID: 25099890 DOI: 10.1002/stem.1604] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2013] [Revised: 10/28/2013] [Accepted: 11/03/2013] [Indexed: 01/01/2023]
Abstract
Over the past two decades, embryonic stem cells (ESCs) have been established as a valuable system to study the complex molecular events that underlie the collinear activation of Hox genes during development. When ESCs are induced to differentiate in response to retinoic acid (RA), Hox genes are transcriptionally activated in their chromosomal order, with the most 3' Hox genes activated first, sequentially followed by more 5' Hox genes. In contrast to the low levels of RA detected during gastrulation (∼33 nM), a time when Hox genes are induced during embryonic development, high levels of RA are used to study Hox gene activation in ESCs in vitro (1-10 µM). This compelled us to compare RA-induced ESC differentiation in vitro with Hox gene activation in vivo. In this study, we show that treatment of ESCs for 2 days with RA best mimics activation of Hox genes during embryonic development. Furthermore, we show that defects in Hox gene expression known to occur in embryos lacking the histone acetyltransferase MOZ (also called MYST3 or KAT6A) were masked in Moz-deficient ESCs when excessive RA (0.5-5 µM) was used. The role of MOZ in Hox gene activation was only evident when ESCs were differentiated at low concentrations of RA, namely 20 nM, which is similar to RA levels in vivo. Our results demonstrate that using RA at physiologically relevant levels to study the activation of Hox genes, more accurately reflects the molecular events during the early phase of Hox gene activation in vivo.
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Affiliation(s)
- Bilal N Sheikh
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, Victoria, Australia; Department of Medical Biology, University of Melbourne, Melbourne, Victoria, Australia
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Northcott JM, Northey JJ, Barnes JM, Weaver VM. Fighting the force: Potential of homeobox genes for tumor microenvironment regulation. Biochim Biophys Acta Rev Cancer 2015; 1855:248-53. [PMID: 25818365 DOI: 10.1016/j.bbcan.2015.03.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Revised: 02/28/2015] [Accepted: 03/19/2015] [Indexed: 12/26/2022]
Abstract
Tumor cells exist in a constantly evolving stromal microenvironment composed of vasculature, immune cells and cancer-associated fibroblasts, all residing within a dynamic extracellular matrix. In this review, we examine the biochemical and biophysical interactions between these various stromal cells and their matrix microenvironment. While the stroma can alter tumor progression via multiple mechanisms, we emphasize the role of homeobox genes in detecting and modulating the mechanical changes in the microenvironment during tumor progression.
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Affiliation(s)
- Josette M Northcott
- Department of Surgery, Surgical Research Laboratory, UCSF, 1001 Potrero Ave, San Francisco, CA 94143, USA
| | - Jason J Northey
- Department of Surgery, Center for Bioengineering and Tissue Regeneration, UCSF, 513 Parnassus Ave, San Francisco, CA 94143, USA
| | - J Matthew Barnes
- Department of Surgery, Center for Bioengineering and Tissue Regeneration, UCSF, 513 Parnassus Ave, San Francisco, CA 94143, USA
| | - Valerie M Weaver
- Department of Surgery, Center for Bioengineering and Tissue Regeneration, UCSF, 513 Parnassus Ave, San Francisco, CA 94143, USA; Department of Anatomy, UCSF, San Francisco, CA, USA; Department of Bioengineering and Therapeutic Sciences, UCSF, San Francisco, CA, USA; Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, UCSF, San Francisco, CA, USA; UCSF Helen Diller Comprehensive Cancer Center, UCSF, San Francisco, CA, USA.
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Abstract
In oral cavity, disturbances due to genetic alterations may range from lack of tooth development to morphological defects. Due to technical advances in genetic engineering and molecular biology, valuable information regarding dentofacial growth could be studied in detailed manner. This helped us to explain the aetiology and pathogenesis of many dentofacial disorders. The success in treatment lies first in determining the aetiology of tooth anomalies and finally differentiating the effect of genes and environment on the orofacial diseases of that particular individual. Several genes belonging to class II homeobox families are expressed during odontogenesis however homeobox genes are not directly imvolved in tooth formation as they are not directly expressed in the first branchial arch derivatives.
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Affiliation(s)
- Sreevalli Suryadeva
- Associate Professor, Department of Orthodontics, Drs. Sudha and Nageswara Rao Pinnamineni Siddhartha Institute of Dental Sciences , Gunnavaram, Vijayawada, Andhara Pradesh, India
| | - Mohammadi Begum Khan
- Assistant Professor, Department of Orthodontics, Drs. Sudha and Nageswara Rao Pinnamineni Siddhartha Institute of Dental Sciences , Gunnavaram, Vijayawada, Andhara Pradesh, India
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42
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Phillips MJ, Perez ET, Martin JM, Reshel ST, Wallace KA, Capowski EE, Singh R, Wright LS, Clark EM, Barney PM, Stewart R, Dickerson SJ, Miller MJ, Percin EF, Thomson JA, Gamm DM. Modeling human retinal development with patient-specific induced pluripotent stem cells reveals multiple roles for visual system homeobox 2. Stem Cells 2015; 32:1480-92. [PMID: 24532057 DOI: 10.1002/stem.1667] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2013] [Revised: 01/07/2014] [Accepted: 01/12/2014] [Indexed: 12/14/2022]
Abstract
Human induced pluripotent stem cells (hiPSCs) have been shown to differentiate along the retinal lineage in a manner that mimics normal mammalian development. Under certain culture conditions, hiPSCs form optic vesicle-like structures (OVs), which contain proliferating progenitors capable of yielding all neural retina (NR) cell types over time. Such observations imply conserved roles for regulators of retinogenesis in hiPSC-derived cultures and the developing embryo. However, whether and to what extent this assumption holds true has remained largely uninvestigated. We examined the role of a key NR transcription factor, visual system homeobox 2 (VSX2), using hiPSCs derived from a patient with microphthalmia caused by an R200Q mutation in the VSX2 homeodomain region. No differences were noted between (R200Q)VSX2 and sibling control hiPSCs prior to OV generation. Thereafter, (R200Q)VSX2 hiPSC-OVs displayed a significant growth deficit compared to control hiPSC-OVs, as well as increased production of retinal pigmented epithelium at the expense of NR cell derivatives. Furthermore, (R200Q)VSX2 hiPSC-OVs failed to produce bipolar cells, a distinctive feature previously observed in Vsx2 mutant mice. (R200Q)VSX2 hiPSC-OVs also demonstrated delayed photoreceptor maturation, which could be overcome via exogenous expression of wild-type VSX2 at early stages of retinal differentiation. Finally, RNAseq analysis on isolated hiPSC-OVs implicated key transcription factors and extracellular signaling pathways as potential downstream effectors of VSX2-mediated gene regulation. Our results establish hiPSC-OVs as versatile model systems to study retinal development at stages not previously accessible in humans and support the bona fide nature of hiPSC-OV-derived retinal progeny.
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Affiliation(s)
- M Joseph Phillips
- Waisman Center, University of Wisconsin-Madison, Madison, Wisconsin, USA; McPherson Eye Research Institute, University of Wisconsin-Madison, Madison, Wisconsin, USA
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43
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López-Romero R, Marrero-Rodríguez D, Romero-Morelos P, Villegas V, Valdivia A, Arreola H, Huerta-Padilla V, Salcedo M. [The role of developmental HOX genes in cervical cancer]. Rev Med Inst Mex Seguro Soc 2015; 53 Suppl 2:S188-S193. [PMID: 26462515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Cervical cancer (CC) is a multifactorial disease associated to genetic, environmental and epigenetic factors, being the infection by human papillomavirus the main etiologic agent. Additionally, the alteration in the expression of transcription factors has been considered of importance for the development of this tumor. HOX genes encode a group of transcription factors involved in cellular proliferation and differentiation processes during the development of embryonic structures in vertebrates; their aberrant expression is associated with tumorigenesis and metastasis. A range of evidence suggests a role for HOX genes in the development of cervical neoplastic cell. Studies in CC cell lines, primary tumors and premalignant lesions have suggested the involvement of HOXA1, HOXC5, C6, C8 and C10, HOXD9 and HOXD13 in the process of cervical carcinogenesis. Also, the de novo expression of genes HOXB2, B4, B13 and HOXC11-C13 appears to be involved in the process of malignant transformation of cervical epithelial cell. These data would allow to open a field in search of new molecular markers in cervical cancer and the development of new therapeutic strategies for this malignancy.
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Affiliation(s)
- Ricardo López-Romero
- Unidad de Investigación Médica en Enfermedades Oncológicas, Hospital de Oncología, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Distrito Federal, México.
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44
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Abstract
The regulation of fetal growth is multifactorial and complex. Normal fetal growth is determined by the genetically predetermined growth potential and further modulated by maternal, fetal, placental, and environmental factors. The placenta provides critical transport functions between the maternal and fetal circulations during intrauterine development. Formation of this interface is controlled by several growth factors, cytokines and transcription factors including homeobox genes. This review summarizes our current knowledge regarding homeobox genes in the human placenta and their differential expression and functions in human idiopathic fetal growth restriction (FGR). The review also describes the research strategies that were used for the identification of homeobox genes, their expression in FGR, functional role and target genes of homeobox genes in the trophoblasts and the hormonal regulators of homeobox gene expression in vitro. A better understanding of molecular pathways driven by placental homeobox genes and further elucidation of signaling pathways underlying the hormone-mediated homeobox gene developmental programs may offer novel strategies of targeted therapy for improving feto-placental growth in idiopathic FGR pregnancies.
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Affiliation(s)
- P Murthi
- Department of Perinatal Medicine, Pregnancy Research Centre, The Royal Women's Hospital and Department of Obstetrics and Gynaecology, The University of Melbourne, Parkville 3052, Australia.
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Chui A, Kalionis B, Abumaree M, Cocquebert M, Fournier T, Evain-Brion D, Brennecke SP, Murthi P. Downstream targets of the homeobox gene DLX3 are differentially expressed in the placentae of pregnancies affected by human idiopathic fetal growth restriction. Mol Cell Endocrinol 2013; 377:75-83. [PMID: 23831639 DOI: 10.1016/j.mce.2013.06.032] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2012] [Revised: 06/21/2013] [Accepted: 06/25/2013] [Indexed: 10/26/2022]
Abstract
Human idiopathic fetal growth restriction (FGR) is associated with placental insufficiency. Previously, we reported that the expression of homeobox gene Distal-less 3 (DLX3) is increased in idiopathic FGR placentae and is a regulator of villous trophoblast differentiation. Here, we identify the downstream targets of DLX3 in trophoblast-derived cell lines. We modelled the high levels of DLX3 in FGR using an over-expression plasmid construct and complemented this using short-interference RNA (siRNA) for inactivation in cultured cells. Using a real-time PCR-based gene profiling, candidate target genes of DLX3 over-expression and inactivation were identified as regulators of trophoblast differentiation; GATA2 and PPARγ. The expression of GATA2 and PPARγ were further assessed in placental tissues and showed increased mRNA and protein levels in FGR-affected tissues compared with gestation-matched controls. We conclude that DLX3 orchestrates the expression of multiple regulators of trophoblast differentiation and that expression of these regulatory genes is abnormal in FGR.
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Affiliation(s)
- Amy Chui
- Department of Perinatal Medicine Pregnancy Research Centre, Royal Women's Hospital, Parkville, Victoria 3052, Australia
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46
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Abstract
Msx1 and Msx2 encode homeodomain transcription factors that play a role in several embryonic developmental processes. Previously, we have shown that in the adult mouse, Msx1(lacZ) is expressed in vascular smooth muscle cells (VSMCs) and pericytes, and that Msx2(lacZ) is also expressed in VSMCs as well as in a few endothelial cells (ECs). The mouse retina and choroid are two highly vascularized tissues. Vessel alterations in the retina are associated with several human diseases and the retina has been intensely used for angiogenesis studies, whereas the choroid has been much less investigated. Using the Msx1(lacZ) and Msx2(lacZ) reporter alleles, we observed that Msx2 is not expressed in the eye vascular tree in contrast to Msx1, for which we establish the spatial and temporal expression pattern in these tissues. In the retina, expression of Msx1 takes place from P3, and by P10, it becomes confined to a subpopulation of ECs at branching points of superficial arterioles. These branching sites are characterized by a subpopulation of mural cells that also show specific expression programs. Specific Msx gene inactivation in the endothelium, using Msx1 and Msx2 conditional mutant alleles together with a Tie2-Cre transgene, did not lead to conspicuous structural defects in the retinal vascular network. Expression of Msx1 at branching sites might therefore be linked to vessel physiology. The retinal blood flow is autonomously regulated and perfusion of capillaries has been proposed to depend on arteriolar precapillary structures that might be the sites for Msx1 expression. On the other hand, branching sites are subject to shear stress that might induce Msx1 expression. In the choroid vascular layer Msx1(lacZ) is expressed more broadly and dynamically. At birth Msx1(lacZ) expression takes place in the endothelium but at P21 its expression has shifted towards the mural layer. We discuss the possible functions of Msx1 in the eye vasculature.
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Affiliation(s)
- Miguel Lopes
- Present address: IPSEN Innovation, Scientific affairs department, 5 Avenue du Canada, 91966 Les Ulis Cedex, France
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