1
|
Choi SC, Park YP, Roach T, Jimenez D, Fisher A, Zadeh M, Ma L, Sobel ES, Ge Y, Mohamadzadeh M, Morel L. Lupus susceptibility gene Pbx1 controls the development, stability, and function of regulatory T cells via Rtkn2 expression. Sci Adv 2024; 10:eadi4310. [PMID: 38536923 PMCID: PMC10971436 DOI: 10.1126/sciadv.adi4310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Accepted: 02/22/2024] [Indexed: 04/05/2024]
Abstract
The maintenance of regulatory T (Treg) cells critically prevents autoimmunity. Pre-B cell leukemia transcription factor 1 (Pbx1) variants are associated with lupus susceptibility, particularly through the expression of a dominant negative isoform Pbx1-d in CD4+ T cells. Pbx1-d overexpression impaired Treg cell homeostasis and promoted inflammatory CD4+ T cells. Here, we showed a high expression of Pbx1 in human and murine Treg cells, which is decreased in lupus patients and mice. Pbx1 deficiency or Pbx1-d overexpression reduced the number, stability, and suppressive activity of Treg cells, which increased murine responses to immunization and autoimmune induction. Mechanistically, Pbx1 deficiency altered the expression of genes implicated in cell cycle and apoptosis in Treg cells. Intriguingly, Rtkn2, a Rho-GTPase previously associated with Treg homeostasis, was directly transactivated by Pbx1. Our results suggest that the maintenance of Treg cell homeostasis and stability by Pbx1 through cell cycle progression prevent the expansion of inflammatory T cells that otherwise exacerbates lupus progression in the hosts.
Collapse
Affiliation(s)
- Seung-Chul Choi
- Department of Microbiology, Immunology, and Molecular Genetics, University of Texas Health San Antonio, TX 78229-3900, USA
| | - Yuk Pheel Park
- Department of Microbiology, Immunology, and Molecular Genetics, University of Texas Health San Antonio, TX 78229-3900, USA
| | - Tracoyia Roach
- Department of Microbiology, Immunology, and Molecular Genetics, University of Texas Health San Antonio, TX 78229-3900, USA
| | - Damian Jimenez
- Department of Microbiology, Immunology, and Molecular Genetics, University of Texas Health San Antonio, TX 78229-3900, USA
| | - Amanda Fisher
- Department of Microbiology, Immunology, and Molecular Genetics, University of Texas Health San Antonio, TX 78229-3900, USA
| | - Mojgan Zadeh
- Department of Microbiology, Immunology, and Molecular Genetics, University of Texas Health San Antonio, TX 78229-3900, USA
| | - Longhuan Ma
- Department of Microbiology, Immunology, and Molecular Genetics, University of Texas Health San Antonio, TX 78229-3900, USA
| | - Eric S. Sobel
- Department of Medicine, University of Florida, Gainesville, FL 32610, USA
| | - Yong Ge
- Department of Microbiology, Immunology, and Molecular Genetics, University of Texas Health San Antonio, TX 78229-3900, USA
| | - Mansour Mohamadzadeh
- Department of Microbiology, Immunology, and Molecular Genetics, University of Texas Health San Antonio, TX 78229-3900, USA
| | - Laurence Morel
- Department of Microbiology, Immunology, and Molecular Genetics, University of Texas Health San Antonio, TX 78229-3900, USA
| |
Collapse
|
2
|
Kao TW, Chen HH, Lin J, Wang TL, Shen YA. PBX1 as a novel master regulator in cancer: Its regulation, molecular biology, and therapeutic applications. Biochim Biophys Acta Rev Cancer 2024; 1879:189085. [PMID: 38341110 DOI: 10.1016/j.bbcan.2024.189085] [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: 10/20/2023] [Revised: 01/31/2024] [Accepted: 02/05/2024] [Indexed: 02/12/2024]
Abstract
PBX1 is a critical transcription factor at the top of various cell fate-determining pathways. In cancer, PBX1 stands at the crossroads of multiple oncogenic signaling pathways and mediates responses by recruiting a broad repertoire of downstream targets. Research thus far has corroborated the involvement of PBX1 in cancer proliferation, resisting apoptosis, tumor-associated neoangiogenesis, epithelial-mesenchymal transition (EMT) and metastasis, immune evasion, genome instability, and dysregulating cellular metabolism. Recently, our understanding of the functional regulation of the PBX1 protein has advanced, as increasing evidence has depicted a regulatory network consisting of transcriptional, post-transcriptional, and post-translational levels of control mechanisms. Furthermore, accumulating studies have supported the clinical utilization of PBX1 as a prognostic or therapeutic target in cancer. Preliminary results showed that PBX1 entails vast potential as a targetable master regulator in the treatment of cancer, particularly in those with high-risk features and resistance to other therapeutic strategies. In this review, we will explore the regulation, protein-protein interactions, molecular pathways, clinical application, and future challenges of PBX1.
Collapse
Affiliation(s)
- Ting-Wan Kao
- Department of Pathology, School of Medicine, College of Medicine, Taipei Medical University, Taipei 110301, Taiwan; Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei 110301, Taiwan
| | - Hsiao-Han Chen
- Department of General Medicine, National Taiwan University Hospital, Taipei 100224, Taiwan
| | - James Lin
- School of Medicine, College of Medicine, Taipei Medical University, Taipei 110301, Taiwan
| | - Tian-Li Wang
- Departments of Pathology, Oncology and Gynecology and Obstetrics, Johns Hopkins Medical Institutions, 1550 Orleans Street, CRB2, Room 306, Baltimore, MD 21231, USA; Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Yao-An Shen
- Department of Pathology, School of Medicine, College of Medicine, Taipei Medical University, Taipei 110301, Taiwan; Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei 110301, Taiwan; International Master/Ph.D. Program in Medicine, College of Medicine, Taipei Medical University, Taipei 110301, Taiwan.
| |
Collapse
|
3
|
Zhang L, Guo H, Zhang X, Wang L, Wei F, Zhao Y, Wang B, Meng Y, Li Y. Small nucleolar RNA Snora73 promotes psoriasis progression by sponging miR-3074-5p and regulating PBX1 expression. Funct Integr Genomics 2024; 24:15. [PMID: 38240925 PMCID: PMC10799104 DOI: 10.1007/s10142-024-01300-7] [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: 11/07/2023] [Revised: 01/11/2024] [Accepted: 01/13/2024] [Indexed: 01/22/2024]
Abstract
Chronic psoriasis is a kind of immune-mediated skin illness and the underlying molecular mechanisms of pathogenesis remain incompletely understood. Here, we used small RNA microarray assays to scan the differential expressed RNAs in psoriasis patient samples. The downstream miRNAs and its targets were predicted using bioinformatics analysis from online bases and confirmed using fluorescence in situ hybridization and dual‑luciferase report gene assay. Cell ability of proliferation and migration were detected using CCK-8 and transwell assays. The results showed that a new snoRNA Snora73 was upregulated in psoriasis patient samples. Overexpression of Snora73 significantly increased psoriasis cells viability and migration, while knockdown of Snora73 got the opposite results. Mechanistically, our results showed that Snora73 acted as a sponge for miR-3074-5p and PBX1 is a direct target of miR-3074-5p in psoriasis cells. Furthermore, miR-3074-5p suppressed psoriasis cell proliferation and migration, while PBX1 promoted cell proliferation and migration in psoriasis. Collectively, these findings reveal a crucial role of Snora73 in progression of psoriasis through miR-3074-5p/PBX1 signaling pathway and suggest a potential therapeutic strategy.
Collapse
Affiliation(s)
- Lihua Zhang
- Department of Dermatology, Clinical Medical Research Center of Dermatology and Venereal Disease in Hebei Province, The Second Hospital of Hebei Medical University, Shijiazhuang, 050000, China
- Construction Unit of the Sub-Center of the National Center for Clinical Medical Research On Skin and Immunological Diseases, The Second Hospital of Hebei Medical University, Shijiazhuang, 050000, China
| | - Hui Guo
- Key Laboratory of Infection and Immunity of CAS, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
| | - Xiaoguang Zhang
- Department of Dermatology, Clinical Medical Research Center of Dermatology and Venereal Disease in Hebei Province, The Second Hospital of Hebei Medical University, Shijiazhuang, 050000, China
- Construction Unit of the Sub-Center of the National Center for Clinical Medical Research On Skin and Immunological Diseases, The Second Hospital of Hebei Medical University, Shijiazhuang, 050000, China
| | - Ling Wang
- Department of Dermatology, Clinical Medical Research Center of Dermatology and Venereal Disease in Hebei Province, The Second Hospital of Hebei Medical University, Shijiazhuang, 050000, China
- Construction Unit of the Sub-Center of the National Center for Clinical Medical Research On Skin and Immunological Diseases, The Second Hospital of Hebei Medical University, Shijiazhuang, 050000, China
| | - Feng Wei
- Department of Dermatology, Clinical Medical Research Center of Dermatology and Venereal Disease in Hebei Province, The Second Hospital of Hebei Medical University, Shijiazhuang, 050000, China
- Construction Unit of the Sub-Center of the National Center for Clinical Medical Research On Skin and Immunological Diseases, The Second Hospital of Hebei Medical University, Shijiazhuang, 050000, China
| | - Yike Zhao
- Department of Dermatology, Clinical Medical Research Center of Dermatology and Venereal Disease in Hebei Province, The Second Hospital of Hebei Medical University, Shijiazhuang, 050000, China
- Construction Unit of the Sub-Center of the National Center for Clinical Medical Research On Skin and Immunological Diseases, The Second Hospital of Hebei Medical University, Shijiazhuang, 050000, China
| | - Bo Wang
- Department of Dermatology, Clinical Medical Research Center of Dermatology and Venereal Disease in Hebei Province, The Second Hospital of Hebei Medical University, Shijiazhuang, 050000, China
- Construction Unit of the Sub-Center of the National Center for Clinical Medical Research On Skin and Immunological Diseases, The Second Hospital of Hebei Medical University, Shijiazhuang, 050000, China
| | - Yibo Meng
- Department of Dermatology, Clinical Medical Research Center of Dermatology and Venereal Disease in Hebei Province, The Second Hospital of Hebei Medical University, Shijiazhuang, 050000, China
- Construction Unit of the Sub-Center of the National Center for Clinical Medical Research On Skin and Immunological Diseases, The Second Hospital of Hebei Medical University, Shijiazhuang, 050000, China
| | - Yanling Li
- Department of Dermatology, Clinical Medical Research Center of Dermatology and Venereal Disease in Hebei Province, The Second Hospital of Hebei Medical University, Shijiazhuang, 050000, China.
- Construction Unit of the Sub-Center of the National Center for Clinical Medical Research On Skin and Immunological Diseases, The Second Hospital of Hebei Medical University, Shijiazhuang, 050000, China.
| |
Collapse
|
4
|
Jia D, Han J, Cai J, Huan Z, Wang Y, Ge X. Mesenchymal stem cells overexpressing PBX1 alleviates haemorrhagic shock-induced kidney damage by inhibiting NF-κB activation. Biochim Biophys Acta Mol Cell Res 2024; 1871:119571. [PMID: 37673222 DOI: 10.1016/j.bbamcr.2023.119571] [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: 04/28/2023] [Revised: 08/21/2023] [Accepted: 08/26/2023] [Indexed: 09/08/2023]
Abstract
Mesenchymal stem cells (MSCs) have favourable outcomes in the treatment of kidney diseases. Pre-B-cell leukaemia transcription factor 1 (PBX1) has been reported to be a regulator of self-renewal of stem cells. Whether PBX1 is beneficial to MSCs in the treatment of haemorrhagic shock (HS)-induced kidney damage is unknown. We overexpressed PBX1 in rat bone marrow-derived mesenchymal stem cells (rBMSCs) and human bone marrow-derived mesenchymal stem cells (hBMSCs) to treat rats with HS and hypoxia-treated human proximal tubule epithelial cells (HK-2), respectively. The results indicated that PBX1 enhanced the homing capacity of rBMSCs to kidney tissues and that treatment with rBMSCs overexpressing PBX1 improved the indicators of kidney function, alleviated structural damage to kidney tissues. Furthermore, administration with rBMSCs overexpressing PBX1 inhibited HS-induced NOD-like receptor family pyrin domain containing 3 (NLRP3) inflammasome activation and the release of proinflammatory cytokines, and further attenuated apoptosis. We then determined whether NF-κB, an important factor in NLRP3 activation and the regulation of inflammation, participates in HS-induced kidney damage, and we found that rBMSCs overexpressing PBX1 inhibited NF-κB activation by decreasing the p-IκBα/IκBα and p-p65/p65 ratios and inhibiting the nuclear translocation and decreasing the DNA-binding capacity of NF-κB. hBMSCs overexpressing PBX1 also exhibited protective effects on HK-2 cells exposed to hypoxia, as shown by the increase in cell viability, the mitigation of apoptosis, the decrease in inflammation, and the inhibition of NF-κB and NLRP3 inflammasome activation. Our study demonstrates that MSCs overexpressing PBX1 ameliorates HS-induced kidney damage by inhibiting NF-κB pathway-mediated NLRP3 inflammasome activation and the inflammatory response.
Collapse
Affiliation(s)
- Di Jia
- Department of Critical Care Medicine, Wuxi 9th People's Hospital Affiliated to Soochow University, Wuxi, Jiangsu 214000, People's Republic of China
| | - Jiahui Han
- Department of Critical Care Medicine, Wuxi 9th People's Hospital Affiliated to Soochow University, Wuxi, Jiangsu 214000, People's Republic of China
| | - Jimin Cai
- Department of Critical Care Medicine, Wuxi 9th People's Hospital Affiliated to Soochow University, Wuxi, Jiangsu 214000, People's Republic of China
| | - Zhirong Huan
- Department of Critical Care Medicine, Wuxi 9th People's Hospital Affiliated to Soochow University, Wuxi, Jiangsu 214000, People's Republic of China
| | - Yan Wang
- Department of Critical Care Medicine, Wuxi 9th People's Hospital Affiliated to Soochow University, Wuxi, Jiangsu 214000, People's Republic of China
| | - Xin Ge
- Department of Critical Care Medicine, Wuxi 9th People's Hospital Affiliated to Soochow University, Wuxi, Jiangsu 214000, People's Republic of China; Orthopedic Institution of Wuxi City, Wuxi, Jiangsu 214000, People's Republic of China.
| |
Collapse
|
5
|
Roach T, Park YP, Choi SC, Morel L. Regulation of the STAT3 pathway by lupus susceptibility gene Pbx1 in T cells. Mol Immunol 2024; 165:1-10. [PMID: 38056350 DOI: 10.1016/j.molimm.2023.11.008] [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: 07/10/2023] [Revised: 11/01/2023] [Accepted: 11/14/2023] [Indexed: 12/08/2023]
Abstract
Systemic lupus erythematosus (SLE) is a chronic autoimmune disease in which poorly characterized genetic factors lead to the production of proinflammatory or autoreactive T cells. Pre-B cell leukemia homeobox 1 (PBX1) is a transcription factor whose dominant negative isoform (PBX1-D) is overexpressed in the CD4+ T cells of SLE patients and lupus-prone mice. Pbx1-D overexpression favors the expansion of proinflammatory T cells and impairs regulatory T (Treg) cell development. Here we show that Pbx1 deficiency and Pbx1-D overexpression decreased STAT3 expression and activation in T cells. Accordingly, Pbx1 deficiency in T cells and Pbx1-D overexpression reduced STAT3-dependent TH17 cell polarization in vitro, but it had no effect in vivo at steady state. STAT3-dependent follicular helper T (TFH) cell polarization in vitro and splenic TFH cell frequency were not affected by either Pbx1 deficiency or Pbx1-D overexpression. Pbx1 deficiency also increased the expression of cell cycle arrest and pro-apoptotic genes, with an increased apoptosis in T cells. Our results suggest a complex interplay between PBX1 and STAT3, which may contribute to lupus pathogenesis through dysregulation of the cell cycle and apoptosis.
Collapse
Affiliation(s)
- Tracoyia Roach
- Department of Pathology, Immunology, and Laboratory Medicine, Gainesville, FL 32610-0275, USA; Department of Microbiology, Immunology, and Molecular Genetics, University of Texas Health San Antonio, TX 78229-3900, USA
| | - Yuk Pheel Park
- Department of Microbiology, Immunology, and Molecular Genetics, University of Texas Health San Antonio, TX 78229-3900, USA
| | - Seung-Chul Choi
- Department of Microbiology, Immunology, and Molecular Genetics, University of Texas Health San Antonio, TX 78229-3900, USA
| | - Laurence Morel
- Department of Microbiology, Immunology, and Molecular Genetics, University of Texas Health San Antonio, TX 78229-3900, USA.
| |
Collapse
|
6
|
Park YP, Roach T, Soh S, Zeumer-Spataro L, Choi SC, Ostrov DA, Yang Y, Morel L. Molecular Mechanisms of Lupus Susceptibility Allele PBX1D. J Immunol 2023; 211:727-734. [PMID: 37486226 PMCID: PMC10530199 DOI: 10.4049/jimmunol.2300362] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 07/03/2023] [Indexed: 07/25/2023]
Abstract
Pre-B cell leukemia homeobox 1 (PBX1) controls chromatin accessibility to a large number of genes in various cell types. Its dominant negative splice isoform, PBX1D, which lacks the DNA and Hox-binding domains, is expressed more frequently in the CD4+ T cells from lupus-prone mice and patients with systemic lupus erythematosus than healthy control subjects. PBX1D overexpression in CD4+ T cells impaired regulatory T cell homeostasis and expanded inflammatory CD4+ T cells. In this study, we showed that PBX1 message expression is downregulated by activation in CD4+ T cells as well as in B cells. PBX1D protein was less stable than the normal isoform, PBX1B, and it is degraded through the ubiquitin-proteasome-dependent pathway. The DNA binding domain lacking in PBX1D has two putative ubiquitin binding sites, K292 and K293, that are predicted to be in direct contact with DNA. Mutation of K292-293 reduced PBX1B stability to a level similar to PBX1D and abrogated DNA binding. In addition, contrary to PBX1B, PBX1D is retained in the cytoplasm without the help of the cofactors MEIS or PREP1, indicating a different requirement for nuclear translocation. Overall, these findings suggest that multiple post-transcriptional mechanisms are responsible for PBX1D loss of function and induction of CD4+ T cell inflammatory phenotypes in systemic lupus erythematosus.
Collapse
Affiliation(s)
- Yuk Pheel Park
- Department of Microbiology, Immunology, and Molecular Genetics, University of Texas Health San Antonio, TX 78229-3900, USA
| | - Tracoyia Roach
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida, College of Medicine, Gainesville, FL32610, USA
| | - Sujung Soh
- Research Institute of Women’s Health, Sookmyung Women’s University, 100 Cheongparo 47-gil, Yongsan-Gu, Seoul 04310, South Korea, USA
| | - Leilani Zeumer-Spataro
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida, College of Medicine, Gainesville, FL32610, USA
| | - Seung-Chul Choi
- Department of Microbiology, Immunology, and Molecular Genetics, University of Texas Health San Antonio, TX 78229-3900, USA
| | - David A. Ostrov
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida, College of Medicine, Gainesville, FL32610, USA
| | - Young Yang
- Research Institute of Women’s Health, Sookmyung Women’s University, 100 Cheongparo 47-gil, Yongsan-Gu, Seoul 04310, South Korea, USA
| | - Laurence Morel
- Department of Microbiology, Immunology, and Molecular Genetics, University of Texas Health San Antonio, TX 78229-3900, USA
| |
Collapse
|
7
|
Losa M, Barozzi I, Osterwalder M, Hermosilla-Aguayo V, Morabito A, Chacón BH, Zarrineh P, Girdziusaite A, Benazet JD, Zhu J, Mackem S, Capellini TD, Dickel D, Bobola N, Zuniga A, Visel A, Zeller R, Selleri L. A spatio-temporally constrained gene regulatory network directed by PBX1/2 acquires limb patterning specificity via HAND2. Nat Commun 2023; 14:3993. [PMID: 37414772 PMCID: PMC10325989 DOI: 10.1038/s41467-023-39443-z] [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: 03/17/2022] [Accepted: 06/14/2023] [Indexed: 07/08/2023] Open
Abstract
A lingering question in developmental biology has centered on how transcription factors with widespread distribution in vertebrate embryos can perform tissue-specific functions. Here, using the murine hindlimb as a model, we investigate the elusive mechanisms whereby PBX TALE homeoproteins, viewed primarily as HOX cofactors, attain context-specific developmental roles despite ubiquitous presence in the embryo. We first demonstrate that mesenchymal-specific loss of PBX1/2 or the transcriptional regulator HAND2 generates similar limb phenotypes. By combining tissue-specific and temporally controlled mutagenesis with multi-omics approaches, we reconstruct a gene regulatory network (GRN) at organismal-level resolution that is collaboratively directed by PBX1/2 and HAND2 interactions in subsets of posterior hindlimb mesenchymal cells. Genome-wide profiling of PBX1 binding across multiple embryonic tissues further reveals that HAND2 interacts with subsets of PBX-bound regions to regulate limb-specific GRNs. Our research elucidates fundamental principles by which promiscuous transcription factors cooperate with cofactors that display domain-restricted localization to instruct tissue-specific developmental programs.
Collapse
Affiliation(s)
- Marta Losa
- Program in Craniofacial Biology, Institute for Human Genetics, Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Department of Orofacial Sciences and Department of Anatomy, University of California San Francisco, San Francisco, CA, USA
| | - Iros Barozzi
- Center for Cancer Research, Medical University of Vienna, Vienna, Austria
| | - Marco Osterwalder
- Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
- Department for Biomedical Research (DBMR), University of Bern, Bern, Switzerland
- Department of Cardiology, Bern University Hospital, Bern, Switzerland
| | - Viviana Hermosilla-Aguayo
- Program in Craniofacial Biology, Institute for Human Genetics, Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Department of Orofacial Sciences and Department of Anatomy, University of California San Francisco, San Francisco, CA, USA
| | - Angela Morabito
- Developmental Genetics, Department Biomedicine, University of Basel, Basel, Switzerland
| | - Brandon H Chacón
- Program in Craniofacial Biology, Institute for Human Genetics, Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Department of Orofacial Sciences and Department of Anatomy, University of California San Francisco, San Francisco, CA, USA
| | - Peyman Zarrineh
- School of Medical Sciences, University of Manchester, Manchester, UK
| | - Ausra Girdziusaite
- Developmental Genetics, Department Biomedicine, University of Basel, Basel, Switzerland
| | - Jean Denis Benazet
- Program in Craniofacial Biology, Institute for Human Genetics, Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Department of Orofacial Sciences and Department of Anatomy, University of California San Francisco, San Francisco, CA, USA
| | - Jianjian Zhu
- Cancer and Developmental Biology Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, MD, USA
| | - Susan Mackem
- Cancer and Developmental Biology Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, MD, USA
| | - Terence D Capellini
- Department of Human Evolutionary Biology, Harvard University, Cambridge, MA, USA
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Diane Dickel
- Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Nicoletta Bobola
- School of Medical Sciences, University of Manchester, Manchester, UK
| | - Aimée Zuniga
- Developmental Genetics, Department Biomedicine, University of Basel, Basel, Switzerland
| | - Axel Visel
- Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
- US Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
- School of Natural Sciences, University of California, Merced, Merced, CA, 95343, USA
| | - Rolf Zeller
- Developmental Genetics, Department Biomedicine, University of Basel, Basel, Switzerland
| | - Licia Selleri
- Program in Craniofacial Biology, Institute for Human Genetics, Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Department of Orofacial Sciences and Department of Anatomy, University of California San Francisco, San Francisco, CA, USA.
| |
Collapse
|
8
|
Mary L, Leclerc D, Gilot D, Belaud-Rotureau MA, Jaillard S. The TALE never ends: A comprehensive overview of the role of PBX1, a TALE transcription factor, in human developmental defects. Hum Mutat 2022; 43:1125-1148. [PMID: 35451537 DOI: 10.1002/humu.24388] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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: 11/15/2021] [Revised: 03/25/2022] [Accepted: 04/20/2022] [Indexed: 11/07/2022]
Abstract
PBX1 is a highly conserved atypical homeodomain transcription factor (TF) belonging to the TALE (three amino acid loop extension) family. Dimerized with other TALE proteins, it can interact with numerous partners and reach dozens of regulating sequences, suggesting its role as a pioneer factor. PBX1 is expressed throughout the embryonic stages (as early as the blastula stage) in vertebrates. In human, PBX1 germline variations are linked to syndromic renal anomalies (CAKUTHED). In this review, we summarized available data on PBX1 functions, PBX1-deficient animal models, and PBX1 germline variations in humans. Two types of genetic alterations were identified in PBX1 gene. PBX1 missense variations generate a severe phenotype including lung hypoplasia, cardiac malformations, and sexual development defects (DSDs). Conversely, truncating variants generate milder phenotypes (mainly cryptorchidism and deafness). We suggest that defects in PBX1 interactions with various partners, including proteins from the HOX (HOXA7, HOXA10, etc.), WNT (WNT9B, WNT3), and Polycomb (BMI1, EED) families are responsible for abnormal proliferation and differentiation of the embryonic mesenchyme. These alterations could explain most of the defects observed in humans. However, some phenotype variability (especially DSDs) remains poorly understood. Further studies are needed to explore the TALE family in greater depth.
Collapse
Affiliation(s)
- Laura Mary
- Service de Cytogénétique et Biologie Cellulaire, CHU Rennes, Rennes, France
- INSERM, EHESP, IRSET (Institut de recherche en santé, environnement et travail)- UMR_S 1085, Université Rennes 1, Rennes, France
| | - Delphine Leclerc
- Inserm U1242, Centre de lutte contre le cancer Eugène Marquis, Université de Rennes, Rennes, France
| | - David Gilot
- Service de Cytogénétique et Biologie Cellulaire, CHU Rennes, Rennes, France
- Inserm U1242, Centre de lutte contre le cancer Eugène Marquis, Université de Rennes, Rennes, France
| | - Marc-Antoine Belaud-Rotureau
- Service de Cytogénétique et Biologie Cellulaire, CHU Rennes, Rennes, France
- INSERM, EHESP, IRSET (Institut de recherche en santé, environnement et travail)- UMR_S 1085, Université Rennes 1, Rennes, France
| | - Sylvie Jaillard
- Service de Cytogénétique et Biologie Cellulaire, CHU Rennes, Rennes, France
- INSERM, EHESP, IRSET (Institut de recherche en santé, environnement et travail)- UMR_S 1085, Université Rennes 1, Rennes, France
| |
Collapse
|
9
|
Ruscitti F, Cerminara M, Iascone M, Pezzoli L, Rosti G, Romano F, Ronchetto P, Martucciello G, Buratti S, Buffelli F, Bocciardi R, Puliti A, Divizia MT. An example of parenchymal renal sparing in the context of complex malformations due to a novel mutation in the PBX1 gene. Birth Defects Res 2022; 114:674-681. [PMID: 35751431 DOI: 10.1002/bdr2.2065] [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: 03/30/2022] [Revised: 05/31/2022] [Accepted: 06/06/2022] [Indexed: 11/10/2022]
Abstract
INTRODUCTION PBX1 encodes the pre-B cell leukemia factor 1, a Three Amino acid Loop Extension (TALE) transcription factor crucial to regulate basic developmental processes. PBX1 loss-of-function variants have been initially described in association with renal malformations in both isolated and syndromic forms. CASE REPORT Herein, we report a male infant presenting multiple organ malformations (cleidosternal dysostosis, micrognathia, left lung hypoplasia, wide interatrial defect, pulmonary hypertension, total anomalous pulmonary venous return, intestinal malrotation) and carrying the heterozygous de novo c.868C > T (p.Arg290Trp) variant in PBX1. This novel variant affects the highly conserved homeodomain of the protein, leading to a non-conservative substitution and consequently altering its tridimensional structure and DNA-binding capacity. CONCLUSION So far, PBX1 has been reported in association with a broad spectrum of renal anomalies. However, given the role of this gene in many different developing processes, whole-exome sequencing can detect mutations in PBX1 even in patients with different phenotypes, not necessarily involving the renal primordium. This report presents a novel PBX1 variant with a predicted strong deleterious effect. The mutation leads to a non-conservative substitution in a very highly conserved domain of the protein, thus altering its tertiary structure and DNA-binding capacity.
Collapse
Affiliation(s)
| | - Maria Cerminara
- DINOGMI, University of Genoa, Genoa, Italy
- UOC Genetica Medica, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | - Maria Iascone
- Laboratorio di Genetica Medica, ASST Papa Giovanni XXIII, Bergamo, Italy
| | - Laura Pezzoli
- Laboratorio di Genetica Medica, ASST Papa Giovanni XXIII, Bergamo, Italy
| | - Giulia Rosti
- DINOGMI, University of Genoa, Genoa, Italy
- UOC Genetica Medica, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | | | - Patrizia Ronchetto
- UOC Laboratorio di Genetica Umana, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | - Giuseppe Martucciello
- DINOGMI, University of Genoa, Genoa, Italy
- UOC Chirurgia Pediatrica, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | - Silvia Buratti
- UOC Terapia Intensiva Neonatale e Pediatrica, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | - Francesca Buffelli
- Fetal-Perinatal Pathology Unit, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | - Renata Bocciardi
- DINOGMI, University of Genoa, Genoa, Italy
- UOC Genetica Medica, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | - Aldamaria Puliti
- DINOGMI, University of Genoa, Genoa, Italy
- UOC Genetica Medica, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | | |
Collapse
|
10
|
Wang H, Wang X, Xu L, Zhang J. PBX1, EMCN and ERG are associated with the sub-clusters and the prognosis of VHL mutant clear cell renal cell carcinoma. Sci Rep 2022; 12:8955. [PMID: 35624190 PMCID: PMC9142578 DOI: 10.1038/s41598-022-13148-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 05/20/2022] [Indexed: 12/30/2022] Open
Abstract
The molecular heterogeneity of primary clear cell renal cell carcinoma (ccRCC) has been reported. However, the classifications of Von Hippel-Lindau (VHL) mutant ccRCC are unclear. Here, VHL mutant ccRCC from The Cancer Genome Atlas and E-MTAB-1980 datasets were divided into two sub-clusters through non-negative matrix factorization algorithm. Most VHL mutant ccRCC patients in sub-cluster2 were with pathological T1 stage and VHL mutant ccRCC patients in sub-cluster1 were with decreased overall survival. DNA replication and homologous recombination scores were higher, while, WNT signaling pathway and regulation of autophagy scores were lower in sub-cluster1 VHL mutant ccRCC. Moreover, PBX1 transcriptional scores and mRNA expressions were lower in sub-cluster1 VHL mutant ccRCC patients and were associated with the overall survival of VHL mutant ccRCC. Furthermore, PBX1 associated genes EMCN and ERG were down-regulated in sub-cluster1 VHL mutant ccRCC and overall survival was decreased in EMCN or ERG lowly expressed VHL mutant ccRCC patients. Also, PBX1 and EMCN were down-regulated in ccRCC tissues, compared with normal kidney tissues. At last, we constructed risk models based on PBX1, EMCN and EGR expression features. With the increase of the risk score, the number of death of VHL mutant ccRCC patients was increased.
Collapse
Affiliation(s)
- Haiwei Wang
- Fujian Maternity and Child Health Hospital, Fujian Medical University, Fuzhou, Fujian, China.
| | - Xinrui Wang
- Fujian Maternity and Child Health Hospital, Fujian Medical University, Fuzhou, Fujian, China
| | - Liangpu Xu
- Fujian Maternity and Child Health Hospital, Fujian Medical University, Fuzhou, Fujian, China
| | - Ji Zhang
- Shanghai Institute of Hematology, Rui-Jin Hospital Affiliated to School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
| |
Collapse
|
11
|
Trasanidis N, Katsarou A, Ponnusamy K, Shen YA, Kostopoulos IV, Bergonia B, Keren K, Reema P, Xiao X, Szydlo RM, Sabbattini PMR, Roberts IAG, Auner HW, Naresh KN, Chaidos A, Wang TL, Magnani L, Caputo VS, Karadimitris A. Systems medicine dissection of chr1q-amp reveals a novel PBX1-FOXM1 axis for targeted therapy in multiple myeloma. Blood 2022; 139:1939-1953. [PMID: 35015835 DOI: 10.1182/blood.2021014391] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 12/20/2021] [Indexed: 11/20/2022] Open
Abstract
Understanding the biological and clinical impact of copy number aberrations (CNAs) on the development of precision therapies in cancer remains an unmet challenge. Genetic amplification of chromosome 1q (chr1q-amp) is a major CNA conferring an adverse prognosis in several types of cancer, including in the blood cancer multiple myeloma (MM). Although several genes across chromosome 1 (chr1q) portend high-risk MM disease, the underpinning molecular etiology remains elusive. Here, with reference to the 3-dimensional (3D) chromatin structure, we integrate multi-omics data sets from patients with MM with genetic variables to obtain an associated clinical risk map across chr1q and to identify 103 adverse prognosis genes in chr1q-amp MM. Prominent among these genes, the transcription factor PBX1 is ectopically expressed by genetic amplification and epigenetic activation of its own preserved 3D regulatory domain. By binding to reprogrammed superenhancers, PBX1 directly regulates critical oncogenic pathways and a FOXM1-dependent transcriptional program. Together, PBX1 and FOXM1 activate a proliferative gene signature that predicts adverse prognosis across multiple types of cancer. Notably, pharmacological disruption of the PBX1-FOXM1 axis with existing agents (thiostrepton) and a novel PBX1 small molecule inhibitor (T417) is selectively toxic against chr1q-amp myeloma and solid tumor cells. Overall, our systems medicine approach successfully identifies CNA-driven oncogenic circuitries, links them to clinical phenotypes, and proposes novel CNA-targeted therapy strategies in MM and other types of cancer.
Collapse
Affiliation(s)
- Nikolaos Trasanidis
- Hugh and Josseline Langmuir Centre for Myeloma Research, Centre for Haematology, Department of Immunology and Inflammation, Imperial College London, London, United Kingdom
| | - Alexia Katsarou
- Hugh and Josseline Langmuir Centre for Myeloma Research, Centre for Haematology, Department of Immunology and Inflammation, Imperial College London, London, United Kingdom
- Department of Haematology, Hammersmith Hospital, Imperial College Healthcare NHS Foundation Trust, London, United Kingdom
| | - Kanagaraju Ponnusamy
- Hugh and Josseline Langmuir Centre for Myeloma Research, Centre for Haematology, Department of Immunology and Inflammation, Imperial College London, London, United Kingdom
| | - Yao-An Shen
- Department of Pathology
- Department of Oncology
- Department of Gynecology and Obstetrics, and
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD
- Department of Pathology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Ioannis V Kostopoulos
- Hugh and Josseline Langmuir Centre for Myeloma Research, Centre for Haematology, Department of Immunology and Inflammation, Imperial College London, London, United Kingdom
- Department of Biology, School of Science, National and Kapodistrian University of Athens, Athens, Greece
| | - Bien Bergonia
- Hugh and Josseline Langmuir Centre for Myeloma Research, Centre for Haematology, Department of Immunology and Inflammation, Imperial College London, London, United Kingdom
| | - Keren Keren
- Hugh and Josseline Langmuir Centre for Myeloma Research, Centre for Haematology, Department of Immunology and Inflammation, Imperial College London, London, United Kingdom
| | - Paudel Reema
- Imperial Experimental Cancer Medicine Centre and Cancer Research UK Imperial Centre, London, United Kingdom
| | - Xiaolin Xiao
- Hugh and Josseline Langmuir Centre for Myeloma Research, Centre for Haematology, Department of Immunology and Inflammation, Imperial College London, London, United Kingdom
| | - Richard M Szydlo
- Hugh and Josseline Langmuir Centre for Myeloma Research, Centre for Haematology, Department of Immunology and Inflammation, Imperial College London, London, United Kingdom
| | - Pierangela M R Sabbattini
- Hugh and Josseline Langmuir Centre for Myeloma Research, Centre for Haematology, Department of Immunology and Inflammation, Imperial College London, London, United Kingdom
| | - Irene A G Roberts
- Department of Paediatrics and Medical Research Council Molecular Haematology Unit, Weatherall Institute of Molecular Medicine, Oxford University, Oxford, United Kingdom
- Oxford Biomedical Research Centre Blood Theme, National Institute for Health Research Oxford Biomedical Centre, Oxford, United Kingdom
| | - Holger W Auner
- Hugh and Josseline Langmuir Centre for Myeloma Research, Centre for Haematology, Department of Immunology and Inflammation, Imperial College London, London, United Kingdom
- Department of Haematology, Hammersmith Hospital, Imperial College Healthcare NHS Foundation Trust, London, United Kingdom
| | - Kikkeri N Naresh
- Department of Haematology, Hammersmith Hospital, Imperial College Healthcare NHS Foundation Trust, London, United Kingdom
- Imperial Experimental Cancer Medicine Centre and Cancer Research UK Imperial Centre, London, United Kingdom
| | - Aristeidis Chaidos
- Hugh and Josseline Langmuir Centre for Myeloma Research, Centre for Haematology, Department of Immunology and Inflammation, Imperial College London, London, United Kingdom
- Department of Haematology, Hammersmith Hospital, Imperial College Healthcare NHS Foundation Trust, London, United Kingdom
| | - Tian-Li Wang
- Department of Pathology
- Department of Oncology
- Department of Gynecology and Obstetrics, and
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Luca Magnani
- Department of Surgery and Cancer, Imperial College London, London, United Kingdom; and
| | - Valentina S Caputo
- Hugh and Josseline Langmuir Centre for Myeloma Research, Centre for Haematology, Department of Immunology and Inflammation, Imperial College London, London, United Kingdom
- Cancer Biology and Therapy Laboratory, School of Applied Science, London South Bank University, London, United Kingdom
| | - Anastasios Karadimitris
- Hugh and Josseline Langmuir Centre for Myeloma Research, Centre for Haematology, Department of Immunology and Inflammation, Imperial College London, London, United Kingdom
- Department of Haematology, Hammersmith Hospital, Imperial College Healthcare NHS Foundation Trust, London, United Kingdom
| |
Collapse
|
12
|
Safgren SL, Olson RJ, Pinto E Vairo F, Bothun ED, Hanna C, Klee EW, Schimmenti LA. De novo PBX1 variant in a patient with glaucoma, kidney anomalies, and developmental delay: An expansion of the CAKUTHED phenotype. Am J Med Genet A 2022; 188:919-925. [PMID: 34797033 DOI: 10.1002/ajmg.a.62576] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [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: 08/25/2021] [Revised: 10/05/2021] [Accepted: 11/02/2021] [Indexed: 01/22/2023]
Abstract
An infant was referred for evaluation of congenital glaucoma and corneal clouding. In addition, he had a pelvic kidney, hypotonia, patent ductus arteriosus, abnormal pinnae, and developmental delay. Exome sequencing identified a previously unpublished de novo single nucleotide insertion in PBX1 c.400dupG (NM_002585.3), predicted to cause a frameshift resulting in a truncated protein with loss of function (p.Ala134Glyfs*65). Identification of this loss of function variant supports the diagnosis of congenital anomalies of the kidney and urinary tract syndrome with or without hearing loss, abnormal ears, or developmental delay (CAKUTHED). Here, we propose glaucoma as an extra-renal manifestation associated with PBX1-related disease due to the relationship of PBX1 with MEIS1, MEIS2, and FOXC1 transcription factors associated with eye development.
Collapse
Affiliation(s)
- Stephanie L Safgren
- Department of Quantitative Health Sciences, Division of Computational Biology, Mayo Clinic, Rochester, Minnesota, USA
| | - Rory J Olson
- Center of Individualized Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Filippo Pinto E Vairo
- Center of Individualized Medicine, Mayo Clinic, Rochester, Minnesota, USA
- Department of Clinical Genomics, Mayo Clinic, Rochester, Minnesota, USA
| | - Erick D Bothun
- Department of Ophthalmology, Mayo Clinic, Rochester, Minnesota, USA
| | - Christian Hanna
- Department of Pediatric Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota, USA
| | - Eric W Klee
- Department of Quantitative Health Sciences, Division of Computational Biology, Mayo Clinic, Rochester, Minnesota, USA
- Center of Individualized Medicine, Mayo Clinic, Rochester, Minnesota, USA
- Department of Clinical Genomics, Mayo Clinic, Rochester, Minnesota, USA
| | - Lisa A Schimmenti
- Department of Ophthalmology, Mayo Clinic, Rochester, Minnesota, USA
- Department of Otorhinolaryngology, Mayo Clinic, Rochester, Minnesota, USA
- Department of Clinical Genomics, Mayo Clinic, Rochester, Minnesota, USA
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, Minnesota, USA
| |
Collapse
|
13
|
Zhao Y, Che J, Tian A, Zhang G, Xu Y, Li S, Liu S, Wan Y. PBX1 Participates in Estrogen-mediated Bladder Cancer Progression and Chemo-resistance Affecting Estrogen Receptors. Curr Cancer Drug Targets 2022; 22:757-770. [PMID: 35422219 DOI: 10.2174/1568009622666220413084456] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [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: 12/23/2021] [Revised: 01/11/2022] [Accepted: 02/05/2022] [Indexed: 12/24/2022]
Abstract
BACKGROUND Bladder cancer (BCa) is a common cancer associated with high morbidity and mortality worldwide. Pre-B-cell leukemia transcription factor 1 (PBX1) has been reported to be involved in tumor progression. OBJECTIVE The aim of the study was to explore the specific role of PBX1 in BCa and its underlying mechanisms. METHODS The relative expressions of PBX1 in muscle-invasive BCa tissues and cell lines were analyzed through RT-qPCR and western blotting. Kaplan-Meier analysis was used to analyze the relationship between PBX1 levels and survival status. Co-immunoprecipitation (CO-IP) and chromatin immunoprecipitation (ChIP)-qPCR assays were adopted to verify the interaction between PBX1 and Estrogen receptors (ERs) and explore the estrogen receptors (ERs)-dependent genes transcription. RESULTS PBX1 was upregulated in invasive BCa patients and BCa cells, positively associated with tumor size, lymph node metastasis, distant metastasis and poorer survival status. The overexpression of PBX1 promoted cell growth, invasion, epithelial-mesenchymal transition (EMT) process and cisplatin resistance in BCa cells, while the silence of PBX1 showed opposite effects. Furthermore, PBX1 interacted with ERs and was required for ER function. PBX1 overexpression aggravated the tumorpromoting effect of estrogen on BCa cells, while it partially suppressed the inhibitory effects of ER antagonist AZD9496 on BCa cells. CONCLUSION This study revealed that PBX1 participated in estrogen mediated BCa progression and chemo-resistance through binding and activating estrogen receptors. Hence, PBX1 may serve as a potential prognostic and therapeutic target for BCa treatment.
Collapse
Affiliation(s)
- Yang Zhao
- Department of Urology, Yantai Affiliated Hospital of Binzhou Medical University, No. 717 Jinbu Street, Muping District, 264100, Yantai, Shandong, China
| | - Jizhong Che
- Department of Urology, Yantai Affiliated Hospital of Binzhou Medical University, No. 717 Jinbu Street, Muping District, 264100, Yantai, Shandong, China
| | - Aimin Tian
- Department of Urology, Yantai Affiliated Hospital of Binzhou Medical University, No. 717 Jinbu Street, Muping District, 264100, Yantai, Shandong, China
| | - Gang Zhang
- Department of Urology, Yantai Affiliated Hospital of Binzhou Medical University, No. 717 Jinbu Street, Muping District, 264100, Yantai, Shandong, China
| | - Yankai Xu
- Department of Urology, Yantai Affiliated Hospital of Binzhou Medical University, No. 717 Jinbu Street, Muping District, 264100, Yantai, Shandong, China
| | - Shuhang Li
- Department of Urology, Yantai Affiliated Hospital of Binzhou Medical University, No. 717 Jinbu Street, Muping District, 264100, Yantai, Shandong, China
| | - Songlin Liu
- Department of Urology, Yantai Affiliated Hospital of Binzhou Medical University, No. 717 Jinbu Street, Muping District, 264100, Yantai, Shandong, China
| | - Yinxu Wan
- Department of Urology, Yantai Affiliated Hospital of Binzhou Medical University, No. 717 Jinbu Street, Muping District, 264100, Yantai, Shandong, China
| |
Collapse
|
14
|
Vinti L, Del Baldo G, Lodi M, Stocchi F, Cefalo MG, Pagliara D. Poor prognosis of B-cell acute lymphoblastic leukemia with TCF/PBX1 fusion gene and ovarian involvement at diagnosis: Two case reports and review of the literature. Pediatr Blood Cancer 2022; 69:e29299. [PMID: 34411424 DOI: 10.1002/pbc.29299] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 08/02/2021] [Accepted: 08/03/2021] [Indexed: 11/10/2022]
Affiliation(s)
- Luciana Vinti
- Department of Paediatric Haematology/Oncology, Cell and Gene Therapy, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Giada Del Baldo
- Department of Paediatric Haematology/Oncology, Cell and Gene Therapy, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Mariachiara Lodi
- Department of Paediatric Haematology/Oncology, Cell and Gene Therapy, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Francesca Stocchi
- Department of Paediatric Haematology/Oncology, Cell and Gene Therapy, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Maria Giuseppina Cefalo
- Department of Paediatric Haematology/Oncology, Cell and Gene Therapy, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Daria Pagliara
- Department of Paediatric Haematology/Oncology, Cell and Gene Therapy, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| |
Collapse
|
15
|
Veiga RN, de Oliveira JC, Gradia DF. PBX1: a key character of the hallmarks of cancer. J Mol Med (Berl) 2021; 99:1667-1680. [PMID: 34529123 DOI: 10.1007/s00109-021-02139-2] [Citation(s) in RCA: 12] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 08/17/2021] [Accepted: 09/08/2021] [Indexed: 12/13/2022]
Abstract
Pre-B-cell leukemia homeobox transcription factor 1 (PBX1) was first identified as part of a fusion protein resulting from the chromosomal translocation t(1;19) in pre-B cell acute lymphoblastic leukemias. Since then, PBX1 has been associated with important developmental programs, and its expression dysregulation has been related to multifactorial disorders, including cancer. As PBX1 overexpression in many cancers is correlated to poor prognosis, we sought to understand how this transcription factor contributes to carcinogenesis, and to organize PBX1's roles in the hallmarks of cancer. There is enough evidence to associate PBX1 with at least five hallmarks: sustaining proliferative signaling, activating invasion and metastasis, inducing angiogenesis, resisting cell death, and deregulating cellular energetics. The lack of studies investigating a possible role for PBX1 on the remaining hallmarks made it impossible to defend or refute its contribution on them. However, the functions of some of the PBX1's transcription targets indicate a potential engagement of PBX1 in the avoidance of immune destruction and in the tumor-promoting inflammation hallmarks. Interestingly, PBX1 might be a player in tumor suppression by activating the transcription of some DNA damage response genes. This is the first review organizing PBX1 roles into the hallmarks of cancer. Thus, we encourage future studies to uncover the PBX1's underlying mechanisms to promote carcinogenesis, for it is a promising diagnostic and prognostic biomarker, as well as a potential target in cancer treatment.
Collapse
Affiliation(s)
- Rafaela Nasser Veiga
- Laboratory of Human Cytogenetics and Oncogenetics, Department of Genetics, Postgraduate Program in Genetics, Universidade Federal Do Paraná, Rua Coronel Francisco Heráclito Dos Santos, 100, Jardim das AméricasCuritiba, CEP, 81531-980, Brazil
| | - Jaqueline Carvalho de Oliveira
- Laboratory of Human Cytogenetics and Oncogenetics, Department of Genetics, Postgraduate Program in Genetics, Universidade Federal Do Paraná, Rua Coronel Francisco Heráclito Dos Santos, 100, Jardim das AméricasCuritiba, CEP, 81531-980, Brazil
| | - Daniela Fiori Gradia
- Laboratory of Human Cytogenetics and Oncogenetics, Department of Genetics, Postgraduate Program in Genetics, Universidade Federal Do Paraná, Rua Coronel Francisco Heráclito Dos Santos, 100, Jardim das AméricasCuritiba, CEP, 81531-980, Brazil.
| |
Collapse
|
16
|
Muggeo S, Crisafulli L, Uva P, Fontana E, Ubezio M, Morenghi E, Colombo FS, Rigoni R, Peano C, Vezzoni P, Della Porta MG, Villa A, Ficara F. PBX1-directed stem cell transcriptional program drives tumor progression in myeloproliferative neoplasm. Stem Cell Reports 2021; 16:2607-2616. [PMID: 34678207 PMCID: PMC8581051 DOI: 10.1016/j.stemcr.2021.09.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 09/21/2021] [Accepted: 09/22/2021] [Indexed: 01/15/2023] Open
Abstract
PBX1 regulates the balance between self-renewal and differentiation of hematopoietic stem cells and maintains proto-oncogenic transcriptional pathways in early progenitors. Its increased expression was found in myeloproliferative neoplasm (MPN) patients bearing the JAK2V617F mutation. To investigate if PBX1 contributes to MPN, and to explore its potential as therapeutic target, we generated the JP mouse strain, in which the human JAK2 mutation is induced in the absence of PBX1. Typical MPN features, such as thrombocythemia and granulocytosis, did not develop without PBX1, while erythrocytosis, initially displayed by JP mice, gradually resolved over time; splenic myeloid metaplasia and in vitro cytokine independent growth were absent upon PBX1 inactivation. The aberrant transcriptome in stem/progenitor cells from the MPN model was reverted by the absence of PBX1, demonstrating that PBX1 controls part of the molecular pathways deregulated by the JAK2V617F mutation. Modulation of the PBX1-driven transcriptional program might represent a novel therapeutic approach.
Collapse
Affiliation(s)
- Sharon Muggeo
- UOS Milan Unit, Istituto di Ricerca Genetica e Biomedica (IRGB), CNR, Milan, Italy; Human Genome and Biomedical Technologies Unit, IRCCS Humanitas Research Hospital, via Manzoni 56, Rozzano, Milan 20089, Italy
| | - Laura Crisafulli
- UOS Milan Unit, Istituto di Ricerca Genetica e Biomedica (IRGB), CNR, Milan, Italy; Human Genome and Biomedical Technologies Unit, IRCCS Humanitas Research Hospital, via Manzoni 56, Rozzano, Milan 20089, Italy
| | - Paolo Uva
- CRS4, Science and Technology Park Polaris, Pula (CA), Italy
| | - Elena Fontana
- UOS Milan Unit, Istituto di Ricerca Genetica e Biomedica (IRGB), CNR, Milan, Italy; Human Genome and Biomedical Technologies Unit, IRCCS Humanitas Research Hospital, via Manzoni 56, Rozzano, Milan 20089, Italy
| | - Marta Ubezio
- Department of Oncology and Hematology, IRCCS Humanitas Research Hospital, via Manzoni 56, Rozzano, 20089 Milan, Italy
| | - Emanuela Morenghi
- Biostatistics Unit, IRCCS Humanitas Research Hospital, via Manzoni 56, Rozzano, Milan, Italy
| | - Federico Simone Colombo
- Flow Cytometry Core, IRCCS Humanitas Research Hospital, via Manzoni 56, Rozzano, 20089 Milan, Italy
| | - Rosita Rigoni
- UOS Milan Unit, Istituto di Ricerca Genetica e Biomedica (IRGB), CNR, Milan, Italy; Human Genome and Biomedical Technologies Unit, IRCCS Humanitas Research Hospital, via Manzoni 56, Rozzano, Milan 20089, Italy
| | - Clelia Peano
- UOS Milan Unit, Istituto di Ricerca Genetica e Biomedica (IRGB), CNR, Milan, Italy; Genomic Unit, IRCCS Humanitas Research Hospital, via Manzoni 56, Rozzano, 20089 Milan, Italy
| | - Paolo Vezzoni
- UOS Milan Unit, Istituto di Ricerca Genetica e Biomedica (IRGB), CNR, Milan, Italy; Human Genome and Biomedical Technologies Unit, IRCCS Humanitas Research Hospital, via Manzoni 56, Rozzano, Milan 20089, Italy
| | - Matteo Giovanni Della Porta
- Department of Oncology and Hematology, IRCCS Humanitas Research Hospital, via Manzoni 56, Rozzano, 20089 Milan, Italy; Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini 4, Pieve Emanuele, 20090 Milan, Italy
| | - Anna Villa
- UOS Milan Unit, Istituto di Ricerca Genetica e Biomedica (IRGB), CNR, Milan, Italy; San Raffaele Telethon Institute for Gene Therapy (SR-TIGET), IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Francesca Ficara
- UOS Milan Unit, Istituto di Ricerca Genetica e Biomedica (IRGB), CNR, Milan, Italy; Human Genome and Biomedical Technologies Unit, IRCCS Humanitas Research Hospital, via Manzoni 56, Rozzano, Milan 20089, Italy.
| |
Collapse
|
17
|
Parker HJ, De Kumar B, Pushel I, Bronner ME, Krumlauf R. Analysis of lamprey meis genes reveals that conserved inputs from Hox, Meis and Pbx proteins control their expression in the hindbrain and neural tube. Dev Biol 2021; 479:61-76. [PMID: 34310923 DOI: 10.1016/j.ydbio.2021.07.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 01/15/2021] [Revised: 06/10/2021] [Accepted: 07/22/2021] [Indexed: 11/23/2022]
Abstract
Meis genes are known to play important roles in the hindbrain and neural crest cells of jawed vertebrates. To explore the roles of Meis genes in head development during evolution of vertebrates, we have identified four meis genes in the sea lamprey genome and characterized their patterns of expression and regulation, with a focus on the hindbrain and pharynx. Each of the lamprey meis genes displays temporally and spatially dynamic patterns of expression, some of which are coupled to rhombomeric domains in the developing hindbrain and select pharyngeal arches. Studies of Meis loci in mouse and zebrafish have identified enhancers that are bound by Hox and TALE (Meis and Pbx) proteins, implicating these factors in the direct regulation of Meis expression. We examined the lamprey meis loci and identified a series of cis-elements conserved between lamprey and jawed vertebrate meis genes. In transgenic reporter assays we demonstrated that these elements act as neural enhancers in lamprey embryos, directing reporter expression in appropriate domains when compared to expression of their associated endogenous meis gene. Sequence alignments reveal that these conserved elements are in similar relative positions of the meis loci and contain a series of consensus binding motifs for Hox and TALE proteins. This suggests that ancient Hox and TALE-responsive enhancers regulated expression of ancestral vertebrate meis genes in segmental domains in the hindbrain and have been retained in the meis loci during vertebrate evolution. The presence of conserved Meis, Pbx and Hox binding sites in these lamprey enhancers links Hox and TALE factors to regulation of lamprey meis genes in the developing hindbrain, indicating a deep ancestry for these regulatory interactions prior to the divergence of jawed and jawless vertebrates.
Collapse
Affiliation(s)
- Hugo J Parker
- Stowers Institute for Medical Research, Kansas City, MO, 64110, USA
| | - Bony De Kumar
- Stowers Institute for Medical Research, Kansas City, MO, 64110, USA
| | - Irina Pushel
- Stowers Institute for Medical Research, Kansas City, MO, 64110, USA
| | - Marianne E Bronner
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, 91125, USA
| | - Robb Krumlauf
- Stowers Institute for Medical Research, Kansas City, MO, 64110, USA; Department of Anatomy and Cell Biology, Kansas University Medical Center, Kansas City, KS, 66160, USA.
| |
Collapse
|
18
|
Mohammadi M, Salehzadeh A, Talesh Sasani S, Tarang A. rs6426881 in the 3'-UTR of PBX1 is involved in breast and gastric cancers via altering the binding potential of miR-522-3p. Mol Biol Rep 2021; 48:7405-7414. [PMID: 34655407 DOI: 10.1007/s11033-021-06756-5] [Citation(s) in RCA: 5] [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: 04/02/2021] [Accepted: 09/15/2021] [Indexed: 02/07/2023]
Abstract
BACKGROUND Breast and gastric cancers are the most important diseases that lead to cancer death and social healthcare challenge. Overexpression of PBX1, a proto-oncogene, is correlated with the progression and metastasis of various cancers. For the first time, in this study the researchers evaluated the relationship between rs6426881, affecting miR-522-3p binding to the PBX1, with breast and gastric cancers. METHODS AND RESULTS The Microarray analysis was performed for finding the relative expression level of PBX1 and hsa-miR-522-3p, based on high throughput experiments. The GSE54397, GSE112369, GSE10810, GSE241585.ER, GSE24185.PR, GSE68373, and GSE38167 datasets were analyzed. A case-control study was carried out in 123 Iranian suffering from breast cancer and 132 participants as control samples as well as 130 people suffering from gastric cancer and 54 people as control group members. SNP rs6426881 in the 3'-UTR of PBX1 was genotyped by the High-Resolution Melting (HRM) method. Association analysis revealed that rs6426881 is correlated with Estrogen and Progesterone receptors, grade, and stage of breast cancer. Furthermore, a significant relationship was observed between the genotypes and blood groups in gastric cancer, while the distribution of alleles was significantly related to smoking, status of the primary tumor, and metastasis (Chi-Square P < 0.05). Finally, Bioinformatics analyses suggested that rs6426881 contains binding sites for miR-522-3p in the 3'-UTR of PBX1 transcript. The finding suggested that TT genotype is associated with poor prognosis in breast and gastric cancer. CONCLUSIONS The rs6426881 T allele at PBX1 3'-UT is significantly related to breast and gastric cancers by altering the regulatory affinity of miR-522-3p to PBX1 3'-UTR and may be suggested as a novel prognostic biomarker for the diseases.
Collapse
Affiliation(s)
- Maryam Mohammadi
- Department of Biology, Rasht Branch, Islamic Azad University, Rasht, Iran
| | - Ali Salehzadeh
- Department of Biology, Rasht Branch, Islamic Azad University, Rasht, Iran.
| | | | - Alireza Tarang
- Rice Research Institute of Iran, Agricultural Research, Education and Extension Organization (AREEO), Rasht, Iran
| |
Collapse
|
19
|
Zhou B, Chu X, Tian H, Liu T, Liu H, Gao W, Chen S, Hu S, Wu D, Xu Y. The clinical outcomes and genomic landscapes of acute lymphoblastic leukemia patients with E2A-PBX1: A 10-year retrospective study. Am J Hematol 2021; 96:1461-1471. [PMID: 34406703 DOI: 10.1002/ajh.26324] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Revised: 07/06/2021] [Accepted: 08/11/2021] [Indexed: 12/21/2022]
Abstract
The clinical outcomes and genomic features of E2A-PBX1 (TCF3-PBX1)-positive B-cell acute lymphoblastic leukemia (B-ALL) patients remain unclear. A total of 137 patients carrying E2A-PBX1 among 3164 B-ALL patients between 2009 and 2019 were retrospectively analyzed. The 5-year overall survival (OS) and disease-free survival (DFS) rates of the whole cohort were 68.6% and 61.0%, respectively. Age [DFS, p = 0.037; cumulative incidence of relapse (CIR), p = 0.005] and the level of minimal residual disease (MRD) after induction chemotherapy (OS, p = 0.020; DFS, p = 0.002; CIR, p = 0.006) were independent risk factors. In adolescents/adults, allogeneic hematopoietic stem cell transplantation (allo-HSCT) at first complete remission (CR1) significantly improved the 5-year prognosis (OS, p < 0.001; DFS, p < 0.001; CIR, p < 0.001). Haploidentical HSCT decreased the CIR compared with human leukocyte antigen-matched HSCT in adolescents/adults (p = 0.017). Mutations in PBX1, PAX5, CTCF and SETD2, amplification of AKT3, and deletion of CDKN2A/B were common in the total cohort, while transcriptome differences were found in the cell cycle, nerve growth factor (NGF) signaling pathway and transcriptional regulation by TP53 between adolescents/adults and children. Patients with multiple subclones at diagnosis tended to have unfavorable 3-year prognoses (DFS, p = 0.010; CIR, p = 0.021). Leukemia clones with DNA repair gene mutations showed aggressive and treatment-refractory phenotypes in this subtype of ALL. Our study indicated that age, the level of MRD and DNA repair gene mutations were associated with E2A-PBX1-positive B-ALL outcomes. Allo-HSCT, especially haploidentical HSCT, could improve the prognosis of adolescent/adult patients.
Collapse
Affiliation(s)
- Biqi Zhou
- Jiangsu Institute of Hematology, National Clinical Research Center for Hematologic Diseases, The First Affiliated Hospital of Soochow University, Suzhou, China
- Institute of Blood and Marrow Transplantation, Collaborative Innovation Center of Hematology, Soochow University, Suzhou, China
| | - Xinran Chu
- Department of Hematology and Oncology, The Children's Hospital of Soochow University, Suzhou, China
| | - Hong Tian
- Jiangsu Institute of Hematology, National Clinical Research Center for Hematologic Diseases, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Tianhui Liu
- Jiangsu Institute of Hematology, National Clinical Research Center for Hematologic Diseases, The First Affiliated Hospital of Soochow University, Suzhou, China
- Institute of Blood and Marrow Transplantation, Collaborative Innovation Center of Hematology, Soochow University, Suzhou, China
| | - Hong Liu
- Jiangsu Institute of Hematology, National Clinical Research Center for Hematologic Diseases, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Wei Gao
- Department of Hematology and Oncology, The Children's Hospital of Soochow University, Suzhou, China
| | - Suning Chen
- Jiangsu Institute of Hematology, National Clinical Research Center for Hematologic Diseases, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Shaoyan Hu
- Department of Hematology and Oncology, The Children's Hospital of Soochow University, Suzhou, China
| | - Depei Wu
- Jiangsu Institute of Hematology, National Clinical Research Center for Hematologic Diseases, The First Affiliated Hospital of Soochow University, Suzhou, China
- Institute of Blood and Marrow Transplantation, Collaborative Innovation Center of Hematology, Soochow University, Suzhou, China
| | - Yang Xu
- Jiangsu Institute of Hematology, National Clinical Research Center for Hematologic Diseases, The First Affiliated Hospital of Soochow University, Suzhou, China
- Institute of Blood and Marrow Transplantation, Collaborative Innovation Center of Hematology, Soochow University, Suzhou, China
| |
Collapse
|
20
|
Zhang P, Perez OC, Southey BR, Sweedler JV, Pradhan AA, Rodriguez-Zas SL. Alternative Splicing Mechanisms Underlying Opioid-Induced Hyperalgesia. Genes (Basel) 2021; 12:1570. [PMID: 34680965 PMCID: PMC8535871 DOI: 10.3390/genes12101570] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 09/19/2021] [Accepted: 09/30/2021] [Indexed: 12/13/2022] Open
Abstract
Prolonged use of opioids can cause opioid-induced hyperalgesia (OIH). The impact of alternative splicing on OIH remains partially characterized. A study of the absolute and relative modes of action of alternative splicing further the understanding of the molecular mechanisms underlying OIH. Differential absolute and relative isoform profiles were detected in the trigeminal ganglia and nucleus accumbens of mice presenting OIH behaviors elicited by chronic morphine administration relative to control mice. Genes that participate in glutamatergic synapse (e.g., Grip1, Grin1, Wnk3), myelin protein processes (e.g., Mbp, Mpz), and axon guidance presented absolute and relative splicing associated with OIH. Splicing of genes in the gonadotropin-releasing hormone receptor pathway was detected in the nucleus accumbens while splicing in the vascular endothelial growth factor, endogenous cannabinoid signaling, circadian clock system, and metabotropic glutamate receptor pathways was detected in the trigeminal ganglia. A notable finding was the prevalence of alternatively spliced transcription factors and regulators (e.g., Ciart, Ablim2, Pbx1, Arntl2) in the trigeminal ganglia. Insights into the nociceptive and antinociceptive modulatory action of Hnrnpk were gained. The results from our study highlight the impact of alternative splicing and transcriptional regulators on OIH and expose the need for isoform-level research to advance the understanding of morphine-associated hyperalgesia.
Collapse
Affiliation(s)
- Pan Zhang
- Illinois Informatics Institute, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA;
| | - Olivia C. Perez
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA; (O.C.P.); (B.R.S.)
| | - Bruce R. Southey
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA; (O.C.P.); (B.R.S.)
| | - Jonathan V. Sweedler
- Department of Chemistry and the Beckman Institute, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA;
| | - Amynah A. Pradhan
- Department of Psychiatry, University of Illinois at Chicago, Chicago, IL 60612, USA;
| | - Sandra L. Rodriguez-Zas
- Illinois Informatics Institute, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA;
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA; (O.C.P.); (B.R.S.)
- Department of Statistics, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| |
Collapse
|
21
|
Lee SR, Qian M, Yang W, Diedrich JD, Raetz E, Yang W, Dong Q, Devidas M, Pei D, Yeoh A, Cheng C, Pui CH, Evans WE, Mullighan CG, Hunger SP, Savic D, Relling MV, Loh ML, Yang JJ. Genome-Wide Association Study of Susceptibility Loci for TCF3-PBX1 Acute Lymphoblastic Leukemia in Children. J Natl Cancer Inst 2021; 113:933-937. [PMID: 32882024 PMCID: PMC8487647 DOI: 10.1093/jnci/djaa133] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 08/14/2020] [Accepted: 08/20/2020] [Indexed: 01/03/2023] Open
Abstract
Acute lymphoblastic leukemia (ALL) is the most common cancer in children. TCF3-PBX1 fusion defines a common molecular subtype of ALL with unique clinical features, but the molecular basis of its inherited susceptibility is unknown. In a genome-wide association study of 1494 ALL cases and 2057 non-ALL controls, we identified a germline risk locus located in an intergenic region between BCL11A and PAPOLG: rs2665658, P = 1.88 × 10-8 for TCF3-PBX1 ALL vs non-ALL, and P = 1.70 × 10-8 for TCF3-PBX1 ALL vs other-ALL. The lead variant was validated in a replication cohort, and conditional analyses pointed to a single causal variant with subtype-specific effect. The risk variant is located in a regulatory DNA element uniquely activated in ALL cells with the TCF3-PBX1 fusion and may distally modulate the transcription of the adjacent gene REL. Our results expand the understanding of subtype-specific ALL susceptibility and highlight plausible interplay between germline variants and somatic genomic abnormalities in ALL pathogenesis.
Collapse
Affiliation(s)
- Shawn H. R Lee
- Department of Pharmaceutical Sciences, St. Jude Children’s Research Hospital, Memphis, TN, USA
- Khoo Teck Puat–National University Children’s Medical Institute, National University Health System, Singapore
- Department of Paediatrics, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Maoxiang Qian
- Institute of Pediatrics and Department of Hematology and Oncology, Children’s Hospital of Fudan University, Shanghai Key Laboratory of Medical Epigenetics, Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Wentao Yang
- Department of Pharmaceutical Sciences, St. Jude Children’s Research Hospital, Memphis, TN, USA
| | - Jonathan D Diedrich
- Department of Pharmaceutical Sciences, St. Jude Children’s Research Hospital, Memphis, TN, USA
| | - Elizabeth Raetz
- Division of Pediatric Hematology and Oncology, New York University Langone Health, New York, NY, USA
| | - Wenjian Yang
- Department of Pharmaceutical Sciences, St. Jude Children’s Research Hospital, Memphis, TN, USA
| | - Qian Dong
- Department of Pharmaceutical Sciences, St. Jude Children’s Research Hospital, Memphis, TN, USA
| | - Meenakshi Devidas
- Department of Global Pediatric Medicine, St Jude Children’s Research Hospital, Memphis, TN, USA
- Department of Biostatistics, University of Florida, Gainesville, FL, USA
| | - Deqing Pei
- Department of Biostatistics, St. Jude Children’s Research Hospital, Memphis, TN, USA
| | - Allen Yeoh
- Khoo Teck Puat–National University Children’s Medical Institute, National University Health System, Singapore
- Department of Paediatrics, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Cheng Cheng
- Department of Biostatistics, St. Jude Children’s Research Hospital, Memphis, TN, USA
| | - Ching-Hon Pui
- Department of Oncology, St. Jude Children’s Research Hospital, Memphis, TN, USA
| | - William E Evans
- Department of Pharmaceutical Sciences, St. Jude Children’s Research Hospital, Memphis, TN, USA
| | - Charles G Mullighan
- Department of Pathology, St. Jude Children’s Research Hospital, Memphis, TN, USA
| | - Stephen P Hunger
- Department of Pediatrics and Center for Childhood Cancer Research, Children’s Hospital of Philadelphia and the Perelman School of Medicine at The University of Pennsylvania, Philadelphia, PA, USA
| | - Daniel Savic
- Department of Pharmaceutical Sciences, St. Jude Children’s Research Hospital, Memphis, TN, USA
| | - Mary V Relling
- Department of Pharmaceutical Sciences, St. Jude Children’s Research Hospital, Memphis, TN, USA
| | - Mignon L Loh
- Department of Pediatrics, Benioff Children’s Hospital and the Helen Diller Family Comprehensive Cancer Center, University of California San Francisco, San Francisco, CA, USA
| | - Jun J Yang
- Department of Pharmaceutical Sciences, St. Jude Children’s Research Hospital, Memphis, TN, USA
| |
Collapse
|
22
|
Yamamura Y, Furuichi K, Murakawa Y, Hirabayashi S, Yoshihara M, Sako K, Kitajima S, Toyama T, Iwata Y, Sakai N, Hosomichi K, Murphy PM, Tajima A, Okita K, Osafune K, Kaneko S, Wada T. Identification of candidate PAX2-regulated genes implicated in human kidney development. Sci Rep 2021; 11:9123. [PMID: 33907292 PMCID: PMC8079710 DOI: 10.1038/s41598-021-88743-1] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Accepted: 04/16/2021] [Indexed: 02/02/2023] Open
Abstract
PAX2 is a transcription factor essential for kidney development and the main causative gene for renal coloboma syndrome (RCS). The mechanisms of PAX2 action during kidney development have been evaluated in mice but not in humans. This is a critical gap in knowledge since important differences have been reported in kidney development in the two species. In the present study, we hypothesized that key human PAX2-dependent kidney development genes are differentially expressed in nephron progenitor cells from induced pluripotent stem cells (iPSCs) in patients with RCS relative to healthy individuals. Cap analysis of gene expression revealed 189 candidate promoters and 71 candidate enhancers that were differentially activated by PAX2 in this system in three patients with RCS with PAX2 mutations. By comparing this list with the list of candidate Pax2-regulated mouse kidney development genes obtained from the Functional Annotation of the Mouse/Mammalian (FANTOM) database, we prioritized 17 genes. Furthermore, we ranked three genes-PBX1, POSTN, and ITGA9-as the top candidates based on closely aligned expression kinetics with PAX2 in the iPSC culture system and susceptibility to suppression by a Pax2 inhibitor in cultured mouse embryonic kidney explants. Identification of these genes may provide important information to clarify the pathogenesis of RCS, human kidney development, and kidney regeneration.
Collapse
Affiliation(s)
- Yuta Yamamura
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, 13-1 Takara-machi, Kanazawa, Ishikawa, 920-8640, Japan
| | - Kengo Furuichi
- Department of Nephrology, School of Medicine, Kanazawa Medical University, 1-1 Daigaku, Uchinada, Kahoku, Ishikawa, 920-0293, Japan.
| | - Yasuhiro Murakawa
- RIKEN Preventive Medicine and Diagnosis Innovation Program, Yokohama, Kanagawa, Japan
| | - Shigeki Hirabayashi
- RIKEN Preventive Medicine and Diagnosis Innovation Program, Yokohama, Kanagawa, Japan
| | - Masahito Yoshihara
- Division of Genomic Technologies, RIKEN Center for Life Science Technologies, Yokohama, Kanagawa, Japan
| | - Keisuke Sako
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, 13-1 Takara-machi, Kanazawa, Ishikawa, 920-8640, Japan
| | - Shinji Kitajima
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, 13-1 Takara-machi, Kanazawa, Ishikawa, 920-8640, Japan
| | - Tadashi Toyama
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, 13-1 Takara-machi, Kanazawa, Ishikawa, 920-8640, Japan
| | - Yasunori Iwata
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, 13-1 Takara-machi, Kanazawa, Ishikawa, 920-8640, Japan
| | - Norihiko Sakai
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, 13-1 Takara-machi, Kanazawa, Ishikawa, 920-8640, Japan
| | - Kazuyoshi Hosomichi
- Department of Bioinformatics and Genomics, Graduate School of Advanced Preventive Medical Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Philip M Murphy
- Molecular Signaling Section, Laboratory of Molecular Immunology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Atsushi Tajima
- Department of Bioinformatics and Genomics, Graduate School of Advanced Preventive Medical Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Keisuke Okita
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
| | - Kenji Osafune
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
| | - Shuichi Kaneko
- Department of System Biology, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Takashi Wada
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, 13-1 Takara-machi, Kanazawa, Ishikawa, 920-8640, Japan.
| |
Collapse
|
23
|
Lüdtke TH, Wojahn I, Kleppa MJ, Schierstaedt J, Christoffels VM, Künzler P, Kispert A. Combined genomic and proteomic approaches reveal DNA binding sites and interaction partners of TBX2 in the developing lung. Respir Res 2021; 22:85. [PMID: 33731112 PMCID: PMC7968368 DOI: 10.1186/s12931-021-01679-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Accepted: 03/07/2021] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Tbx2 encodes a transcriptional repressor implicated in the development of numerous organs in mouse. During lung development TBX2 maintains the proliferation of mesenchymal progenitors, and hence, epithelial proliferation and branching morphogenesis. The pro-proliferative function was traced to direct repression of the cell-cycle inhibitor genes Cdkn1a and Cdkn1b, as well as of genes encoding WNT antagonists, Frzb and Shisa3, to increase pro-proliferative WNT signaling. Despite these important molecular insights, we still lack knowledge of the DNA occupancy of TBX2 in the genome, and of the protein interaction partners involved in transcriptional repression of target genes. METHODS We used chromatin immunoprecipitation (ChIP)-sequencing and expression analyses to identify genomic DNA-binding sites and transcription units directly regulated by TBX2 in the developing lung. Moreover, we purified TBX2 containing protein complexes from embryonic lung tissue and identified potential interaction partners by subsequent liquid chromatography/mass spectrometry. The interaction with candidate proteins was validated by immunofluorescence, proximity ligation and individual co-immunoprecipitation analyses. RESULTS We identified Il33 and Ccn4 as additional direct target genes of TBX2 in the pulmonary mesenchyme. Analyzing TBX2 occupancy data unveiled the enrichment of five consensus sequences, three of which match T-box binding elements. The remaining two correspond to a high mobility group (HMG)-box and a homeobox consensus sequence motif. We found and validated binding of TBX2 to the HMG-box transcription factor HMGB2 and the homeobox transcription factor PBX1, to the heterochromatin protein CBX3, and to various members of the nucleosome remodeling and deacetylase (NuRD) chromatin remodeling complex including HDAC1, HDAC2 and CHD4. CONCLUSION Our data suggest that TBX2 interacts with homeobox and HMG-box transcription factors as well as with the NuRD chromatin remodeling complex to repress transcription of anti-proliferative genes in the pulmonary mesenchyme.
Collapse
Affiliation(s)
- Timo H Lüdtke
- Institut Für Molekularbiologie, Medizinische Hochschule Hannover, Hannover, Germany
| | - Irina Wojahn
- Institut Für Molekularbiologie, Medizinische Hochschule Hannover, Hannover, Germany
| | - Marc-Jens Kleppa
- Institut Für Molekularbiologie, Medizinische Hochschule Hannover, Hannover, Germany
| | - Jasper Schierstaedt
- Institut Für Molekularbiologie, Medizinische Hochschule Hannover, Hannover, Germany
- Plant-Microbe Systems, Leibniz Institute of Vegetable and Ornamental Crops, Großbeeren, Germany
| | - Vincent M Christoffels
- Department of Anatomy, Embryology and Physiology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Patrick Künzler
- Institut Für Pflanzengenetik, Leibniz Universität Hannover, Hannover, Germany
| | - Andreas Kispert
- Institut Für Molekularbiologie, Medizinische Hochschule Hannover, Hannover, Germany.
| |
Collapse
|
24
|
Liu J, Wang L, Li J, Xu Y. Upregulation of microRNA-650 by PBX1 is correlated with the development of Helicobacter pylori-associated gastric carcinoma. Neoplasma 2021; 68:262-272. [PMID: 33147052 DOI: 10.4149/neo_2020_200806n823] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 10/05/2020] [Indexed: 11/08/2022]
Abstract
Helicobacter pylori (HP) infection induces the development of gastric carcinoma (GC), one of the most frequent and fatal cancers worldwide, via a progressive cascade. The roles of microRNAs (miRNAs) involved in the cascade and the behind mechanisms, however, are still unclear. This study was designed to investigate the expression of miR-650, a well-recognized oncogenic miRNA in GC samples and to analyze the associations between this miRNA and HP infection, and the molecular mechanism. Following miRNA- and mRNA-based microarray analyses, miR-650, pre-B-cell leukemia transcription factor 1 (PBX1), and LATS2 were filtered as targets. After that, function assays were implemented to assess their function in GC cells. miR-650 was upregulated in HP+ tissues and cells, and inhibition of miR-650 attenuated cell proliferation, invasion, migration, yet enhanced apoptosis. PBX1 was overexpressed in HP+ tissues and cells and promoted miR-650 transcription. Overexpression of PBX1 abrogated the effect of the miR-650 inhibitor on GC cells. miR-650 targeted LATS2, and LATS2 was poorly expressed in HP+ tissues and cell lines. Simultaneous knockdown of miR-650 and LATS2 reduced GC cell apoptosis. These results display that upregulation of miR-650 induced by HP infection and PBX1 dampens LATS2 in GC cells, potentially offering novel intervention targets for GC.
Collapse
Affiliation(s)
- Junzheng Liu
- Digestive System Department, Cangzhou People`s Hospital, Cangzhou, China
| | - Lei Wang
- Department of General Surgery, Eastern Hospital of the Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Jie Li
- Medical Department, Dongying Second People's Hospital, Dongying, China
| | - Yu Xu
- Department of Oncology, Zibo Hospital of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Zibo, China
| |
Collapse
|
25
|
Nagel S, Pommerenke C, Meyer C, MacLeod RAF, Drexler HG. Establishment of the TALE-code reveals aberrantly activated homeobox gene PBX1 in Hodgkin lymphoma. PLoS One 2021; 16:e0246603. [PMID: 33539429 PMCID: PMC7861379 DOI: 10.1371/journal.pone.0246603] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Accepted: 01/21/2021] [Indexed: 12/26/2022] Open
Abstract
Homeobox genes encode transcription factors which regulate basic processes in development and cell differentiation and are grouped into classes and subclasses according to sequence similarities. Here, we analyzed the activities of the 20 members strong TALE homeobox gene class in early hematopoiesis and in lymphopoiesis including developing and mature B-cells, T-cells, natural killer (NK)-cells and innate lymphoid cells (ILC). The resultant expression pattern comprised eleven genes and which we termed TALE-code enables discrimination of normal and aberrant activities of TALE homeobox genes in lymphoid malignancies. Subsequent expression analysis of TALE homeobox genes in public datasets of Hodgkin lymphoma (HL) patients revealed overexpression of IRX3, IRX4, MEIS1, MEIS3, PBX1, PBX4 and TGIF1. As paradigm we focused on PBX1 which was deregulated in about 17% HL patients. Normal PBX1 expression was restricted to hematopoietic stem cells and progenitors of T-cells and ILCs but absent in B-cells, reflecting its roles in stemness and early differentiation. HL cell line SUP-HD1 expressed enhanced PBX1 levels and served as an in vitro model to identify upstream regulators and downstream targets in this malignancy. Genomic studies of this cell line therein showed a gain of the PBX1 locus at 1q23 which may underlie its aberrant expression. Comparative expression profiling analyses of HL patients and cell lines followed by knockdown experiments revealed NFIB and TLX2 as target genes activated by PBX1. HOX proteins operate as cofactors of PBX1. Accordingly, our data showed that HOXB9 overexpressed in HL coactivated TLX2 but not NFIB while activating TNFRSF9 without PBX1. Further downstream analyses showed that TLX2 activated TBX15 which operated anti-apoptotically. Taken together, we discovered a lymphoid TALE-code and identified an aberrant network around deregulated TALE homeobox gene PBX1 which may disturb B-cell differentiation in HL by reactivation of progenitor-specific genes. These findings may provide the framework for future studies to exploit possible vulnerabilities of malignant cells in therapeutic scenarios.
Collapse
Affiliation(s)
- Stefan Nagel
- Department of Human and Animal Cell Lines, Leibniz-Institute DSMZ – German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany
| | - Claudia Pommerenke
- Department of Human and Animal Cell Lines, Leibniz-Institute DSMZ – German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany
| | - Corinna Meyer
- Department of Human and Animal Cell Lines, Leibniz-Institute DSMZ – German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany
| | - Roderick A. F. MacLeod
- Department of Human and Animal Cell Lines, Leibniz-Institute DSMZ – German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany
| | - Hans G. Drexler
- Department of Human and Animal Cell Lines, Leibniz-Institute DSMZ – German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany
| |
Collapse
|
26
|
Fitzgerald KK, Powell-Hamilton N, Shillingford AJ, Robinson B, Gripp KW. Inherited intragenic PBX1 deletion: Expanding the phenotype. Am J Med Genet A 2021; 185:234-237. [PMID: 33098248 DOI: 10.1002/ajmg.a.61932] [Citation(s) in RCA: 5] [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: 06/23/2020] [Revised: 09/29/2020] [Accepted: 10/03/2020] [Indexed: 11/10/2022]
Abstract
PBX1 encodes the pre-B cell leukemia homeobox transcription factor, a three amino acid loop extension (TALE) homeodomain transcription factor, which forms nuclear complexes with other TALE class homeodomain proteins that ultimately regulate target genes controlling organ patterning during embryogenesis. Heterozygous de novo pathogenic variants in PBX1 resulting in haploinsufficiency are associated with congenital anomalies of the kidneys and urinary tract, most commonly renal hypoplasia, as well as anomalies involving the external ear, branchial arch, heart, and genitalia, and they cause intellectual disability and developmental delay. Affected individuals described thus far have had de novo variants. Here, we report three related individuals with an inherited pathogenic intragenic PBX1 deletion with variable clinical features typical for this syndrome.
Collapse
Affiliation(s)
- Kristi K Fitzgerald
- Nemours Cardiac Center, Alfred I. duPont Hospital for Children, Wilmington, Delaware, USA
- Division of Medical Genetics, Alfred I. duPont Hospital for Children, Wilmington, Delaware, USA
| | - Nina Powell-Hamilton
- Division of Medical Genetics, Alfred I. duPont Hospital for Children, Wilmington, Delaware, USA
| | - Amanda J Shillingford
- Nemours Cardiac Center, Alfred I. duPont Hospital for Children, Wilmington, Delaware, USA
| | - Bradley Robinson
- Nemours Cardiac Center, Alfred I. duPont Hospital for Children, Wilmington, Delaware, USA
| | - Karen W Gripp
- Division of Medical Genetics, Alfred I. duPont Hospital for Children, Wilmington, Delaware, USA
| |
Collapse
|
27
|
Yao XP, Peng HX, Wu JR. [Silencing PBX1 expression induces apoptosis and ROS production of lung cancer cells]. Zhonghua Zhong Liu Za Zhi 2020; 42:843-848. [PMID: 33113625 DOI: 10.3760/cma.j.cn112152-20200220-00107] [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: 11/05/2022]
Abstract
Objective: To investigate the effects of pre-B lymphocytic leukemia transcription factor (PBX1) expression on the apoptosis, reactive oxygen species (ROS) content and transcriptional activation factor 3 (STAT3) signaling pathway of lung cancer cells. Methods: Real-time quantitative polymerase chain reaction was used to detect the expression level of PBX1 in lung cancer tissues and adjacent tissues. The correlation between PBX1 expression level and clinical pathological parameters of patients were analyzed. Western blot was used to detect the protein expression level of PBX1 in human lung cancer cell lines, including A549, SPC-A1, SK-MES-1 and H1299. A549 cells were transfected with blank control (blank group), negative control (NC group) or PBX1 small interfering RNA (siRNA group), respectively. The cells apoptosis and ROS content were detected by flow cytometry. The protein expression levels of PBX1, STAT3, phosphorylated STAT3 (p-STAT3), B cell lymphoma/leukemia-2 (Bcl-2) and survivin in each group were detected by western blot. Results: The expression level of PBX1 mRNA in lung cancer was (2.36±0.23), significantly higher than (1.02±0.15) in paracancerous tissues (P<0.05). The expression level of PBX1 was correlated with lung cancer differentiation, lymph node metastasis and TNM stage (P<0.05). The expression levels of PBX1 in human lung cancer cells A549, SPC-A1, SK-MES-1 and H1299 were (0.454±0.038), (0.403±0.034), (0.311±0.028) and (0.377±0.035), respectively, significantly higher than (0.041±0.007) of human normal lung cells MRC-5 (P<0.05). The expression level of PBX1 protein in A549 cells transfected with PBX1 siRNA was (0.082±0.010), significantly lower than (0.704±0.065) of the blank group (P<0.05). The apoptosis rate and ROS content of siPBX1 group were (30.78±3.64)% and (51.55±5.03), respectively, significantly higher than (3.92±0.27)% and (22.36±1.31) of blank group (P<0.05). The protein expressions of p-STAT3, Bcl-2 and survivin were (0.051±0.006), (0.202±0.018) and (0.068±0.008), respectively, significantly lower than (0.172±0.010), (0.425±0.041) and (0.196±0.021) of blank group (P<0.05). Conclusion: Inhibition of PBX1 expression can induce the apoptosis of lung cancer cell, the mechanism may be related to ROS production and down-regulation of STAT3 signal.
Collapse
Affiliation(s)
- X P Yao
- Department of Respiratory Medicine, Xiangyang Central Hospital, Hubei University of Arts and Sciences, Xiangyang 441000, China
| | - H X Peng
- Department of Respiratory and Critical Care Medicine, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430000, China
| | - J R Wu
- Department of Respiratory Medicine, Xiangyang Central Hospital, Hubei University of Arts and Sciences, Xiangyang 441000, China
| |
Collapse
|
28
|
Yu D, Ma Y, Feng C, Ma Z, Guo J, Chen H, He T, Guo J, Sun X, Qin Q, Sun X, Ma J. PBX1 Increases the Radiosensitivity of Oesophageal Squamous Cancer by Targeting of STAT3. Pathol Oncol Res 2020; 26:2161-2168. [PMID: 32170580 DOI: 10.1007/s12253-020-00803-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [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: 12/20/2018] [Accepted: 03/04/2020] [Indexed: 10/24/2022]
Abstract
The radioresistance of oesophageal squamous cell carcinoma (OSCC) is a critical factor leading to a poor prognosis among patients. The expression of PBX1 is abnormally high in a broad range of human tissues, and this gene plays a key role in tumour proliferation. This research intended to explore the radiosensitization of OSCC by silencing PBX1. The OSCC cell lines KYSE450 and KYSE150 were subjected to PBX1 silencing and/or irradiation (IR). Cell proliferation, colony formation, and apoptosis were tested to evaluate the radiosensitization ability of PBX1 silencing. The levels of STAT3 and p-STAT3 in the OSCC cells were tested by Western blotting. Furthermore, KYSE150 cells with or without PBX1 silencing were xenografted into nude mice with or without radiation exposure. Concomitant PBX1 silencing and IR can obviously suppress growth and enhance radiosensitivity in OSCC cells and xenografts. Moreover, the downregulation of PBX1 inhibits the expression of STAT3 and p-STAT3. The downregulation of PBX1 may increase radiosensitivity in OSCC cells and xenografts via the PBX1/STAT3 pathway. Our findings demonstrate that PBX1 may be a potential target for promoting the effect of radiation therapy in OSCC patients.
Collapse
Affiliation(s)
- Dingyue Yu
- Department of radiotherapy, The Lianyungang municipal oriental Hospital Affiliated to Bengbu Medical College, 57 Zhonghua West Road, Lianyungang, 222042, Jiangsu Province, China
| | - Yuanyuan Ma
- Department of radiotherapy, The Lianyungang municipal oriental Hospital Affiliated to Bengbu Medical College, 57 Zhonghua West Road, Lianyungang, 222042, Jiangsu Province, China
| | - Chen Feng
- Oncology Department, First Hospital of Bengbu Medical College, Bengbu, 233000, AnHui, China
| | - Zhiyu Ma
- Department of radiotherapy, The Lianyungang municipal oriental Hospital Affiliated to Bengbu Medical College, 57 Zhonghua West Road, Lianyungang, 222042, Jiangsu Province, China
| | - Jiayou Guo
- Department of radiotherapy, The Lianyungang municipal oriental Hospital Affiliated to Bengbu Medical College, 57 Zhonghua West Road, Lianyungang, 222042, Jiangsu Province, China
| | - Hui Chen
- Department of radiotherapy, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210000, Jiangsu, China
| | - Tianli He
- Department of Respiratory, Changxing People's Hospital, Huzhou, 313000, Zhejiang, China
| | - Jiayi Guo
- Department of radiotherapy, The Lianyungang municipal oriental Hospital Affiliated to Bengbu Medical College, 57 Zhonghua West Road, Lianyungang, 222042, Jiangsu Province, China
| | - Xingbang Sun
- Department of radiotherapy, The Lianyungang municipal oriental Hospital Affiliated to Bengbu Medical College, 57 Zhonghua West Road, Lianyungang, 222042, Jiangsu Province, China
| | - Qin Qin
- Department of radiotherapy, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210000, Jiangsu, China
| | - Xinchen Sun
- Department of radiotherapy, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210000, Jiangsu, China
| | - Jianxin Ma
- Department of radiotherapy, The Lianyungang municipal oriental Hospital Affiliated to Bengbu Medical College, 57 Zhonghua West Road, Lianyungang, 222042, Jiangsu Province, China.
| |
Collapse
|
29
|
Wang B, Liu F, Liu Z, Han X, Lian A, Zhang Y, Zuo K, Wang Y, Liu M, Zou F, Jiang Y, Jin M, Liu X, Liu J. Internalization of the TAT-PBX1 fusion protein significantly enhances the proliferation of human hair follicle-derived mesenchymal stem cells and delays their senescence. Biotechnol Lett 2020; 42:1877-1885. [PMID: 32436118 DOI: 10.1007/s10529-020-02909-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [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: 12/19/2019] [Accepted: 05/07/2020] [Indexed: 01/20/2023]
Abstract
OBJECTIVES To express a TAT-PBX1 fusion protein using a prokaryotic expression system and to explore potential effects of TAT-PBX1 in the proliferation and senescence of human hair follicle-derived mesenchymal stem cells. RESULTS The TAT-PBX1 fusion was produced in inclusion bodies and heterogenously expressed in Rosetta (DE3) cells. Immunofluorescence staining showed that TAT-PBX1 fusion proteins were internalized by human hair follicle-derived mesenchymal stem cells. The growth rate of cells was increased after treatment with more than 5.0 μg/mL of TAT-PBX1. The rate of senescence-associated β-galactosidase positive cells was reduced in the 10.0 μg/mL TAT-PBX1 group (28%) than the 0 μg/mL control group (60%). Cells treated with the TAT-PBX1 fusion protein showed higher expression of p-AKT (1.22-fold that of the control), which indicates that TAT-PBX1 activated AKT pathway after cellular uptake. CONCLUSIONS The TAT-PBX1 fusion protein increased the proliferation of hair follicle mesenchymal stem cells and delayed their senescence by activating the AKT pathway following internalization by cells.
Collapse
Affiliation(s)
- Bo Wang
- Department of Toxicology, School of Public Health, Jilin University, 1163 Xinmin Avenue, Changchun, 130021, China
| | - Feilin Liu
- Department of Ophthalmology, The Second Hospital of Jilin University, 218 Ziqiang Street, Changchun, 130021, China
| | - Zinan Liu
- Department of Toxicology, School of Public Health, Jilin University, 1163 Xinmin Avenue, Changchun, 130021, China
| | - Xing Han
- Department of Toxicology, School of Public Health, Jilin University, 1163 Xinmin Avenue, Changchun, 130021, China
| | - Aobo Lian
- Department of Toxicology, School of Public Health, Jilin University, 1163 Xinmin Avenue, Changchun, 130021, China
| | - Yuying Zhang
- Department of Toxicology, School of Public Health, Jilin University, 1163 Xinmin Avenue, Changchun, 130021, China
| | - Kuiyang Zuo
- Department of Toxicology, School of Public Health, Jilin University, 1163 Xinmin Avenue, Changchun, 130021, China
| | - Yuan Wang
- Department of Toxicology, School of Public Health, Jilin University, 1163 Xinmin Avenue, Changchun, 130021, China
| | - Mingsheng Liu
- Department of Toxicology, School of Public Health, Jilin University, 1163 Xinmin Avenue, Changchun, 130021, China
| | - Fei Zou
- Department of Pediatrics, The First Hospital of Jilin University, 71 Xinmin Avenue, Changchun, 130021, China
| | - Yixu Jiang
- Department of Toxicology, School of Public Health, Jilin University, 1163 Xinmin Avenue, Changchun, 130021, China
| | - Minghua Jin
- Department of Toxicology, School of Public Health, Jilin University, 1163 Xinmin Avenue, Changchun, 130021, China
| | - Xiaomei Liu
- Department of Toxicology, School of Public Health, Jilin University, 1163 Xinmin Avenue, Changchun, 130021, China.
| | - Jinyu Liu
- Department of Toxicology, School of Public Health, Jilin University, 1163 Xinmin Avenue, Changchun, 130021, China.
| |
Collapse
|
30
|
Abstract
Previous studies revealed that PBX1 ranked the third in the differentially expressed genes about development and progression of breast cancer (BC). Nevertheless, the role of PBX1 contributing to progression of BC has been unevaluated. Here, on the basis of ONCOMINE and GOBO databases, we compared BC samples with normal controls about the expression of PBX1 in various types of cancers, as well as their related expression levels in cancer cell lines by Cancer Cell Line Encyclopedia (CCLE) analysis. It was also found that, when compared with normal controls, PBX1 was markedly higher expressed not only in BC samples but also in BC cell lines, and coexpressed with EMP2 by ONCOMINE and CCLE coexpression analysis, which was also expressed higher in BC samples and BC cell lines similarly. According to Kaplan-Meier plotter, we further explored the prognostic functions of PBX1 and EMP2 in different molecular subtypes of BC, respectively. We demonstrated that overexpression of PBX1 mRNA was correlated with worse survival in luminal B subtype BC, whereas increased EMP2 expression was associated with shorter relapse-free survival in estrogen receptor (ER)-negative patients. Combining with previous studies, we could make a conclusion that coexpression of PBX1 and EMP2 predicts poor prognosis in ER-negative BC, which could be effective biomarkers for BC.
Collapse
Affiliation(s)
- Yier Qiu
- Department of Endoscopic Surgery of Thyroid Gland and Breast, The Yinzhou People's Hospital, Ningbo, P.R. China
| | - Guowen Lu
- Department of Endoscopic Surgery of Thyroid Gland and Breast, The Yinzhou People's Hospital, Ningbo, P.R. China
| | - Yingjie Wu
- Department of Endoscopic Surgery of Thyroid Gland and Breast, The Yinzhou People's Hospital, Ningbo, P.R. China
| |
Collapse
|
31
|
Liu N, Zhang Z, Li L, Shen X, Sun B, Wang R, Zhong H, Shi Q, Wei L, Zhang Y, Wang Y, Xu C, Liu Y, Yuan W. MicroRNA-181 regulates the development of Ossification of Posterior longitudinal ligament via Epigenetic Modulation by targeting PBX1. Theranostics 2020; 10:7492-7509. [PMID: 32685001 PMCID: PMC7359103 DOI: 10.7150/thno.44309] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [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: 01/27/2020] [Accepted: 06/02/2020] [Indexed: 12/24/2022] Open
Abstract
Objectives: Ossification of the posterior longitudinal ligament (OPLL) presents as the development of heterotopic ossification in the posterior longitudinal ligament of the spine. The etiology of OPLL is genetically linked, as shown by its high prevalence in Asian populations. However, the molecular mechanism of the disease remains obscure. In this study, we explored the function and mechanism of OPLL-specific microRNAs. Methods: The expression levels of the ossification-related OPLL-specific miR-181 family were measured in normal or OPLL ligament tissues. The effect of miR-181a on the ossification of normal or pathogenic ligament cells was tested using real-time polymerase chain reaction (PCR), Western blot, alizarin red staining and alkaline phosphatase (ALP) staining. The candidate targets of miR-181 were screened using a dual luciferase reporter assay and functional analysis. The link between miR-181a and its target PBX1 was investigated using chromatin immunoprecipitation, followed by real-time PCR detection. Histological and immunohistochemical analysis as well as micro-CT scanning were used to evaluate the effects of miR-181 and its antagonist using both tip-toe-walking OPLL mice and in vivo bone formation assays. Results: Using bioinformatic analysis, we found that miR-181a-5p is predicted to play important roles in the development of OPLL. Overexpression of miR-181a-5p significantly increased the expression of ossification-related genes, staining level of alizarin red and ALP activity, while the inhibition of miR-181a-5p by treatment with an antagomir had the opposite effects. Functional analysis identified PBX1 as a direct target of miR-181a-5p, and we determined that PBX1 was responsible for miR-181a-5p's osteogenic phenotype. By chromatin immunoprecipitation assay, we found that miR-181a-5p controls ligament cell ossification by regulating PBX1-mediated modulation of histone methylation and acetylation levels in the promoter region of osteogenesis-related genes. Additionally, using an in vivo model, we confirmed that miR-181a-5p can substantially increase the bone formation ability of posterior ligament cells and cause increased osteophyte formation in the cervical spine of tip-toe-walking mice. Conclusions: Our data unveiled the mechanism by which the miR-181a-5p/PBX1 axis functions in the development of OPLL, and it revealed the therapeutic effects of the miR-181a-5p antagomir in preventing OPLL development both in vivo and in vitro. Our work is the first to demonstrate that microRNA perturbation could modulate the development of OPLL through epigenetic regulation.
Collapse
Affiliation(s)
- Ning Liu
- Department of Orthopedics, Changzheng Hospital Affiliated to Second Military Medical University, 415th Feng Yang Road, Shanghai, 200003, PR China
| | - Zicheng Zhang
- Undergraduate Brigade, Changhai Hospital Affiliated to Second Military Medical University, 168th Chang Hai Road, Shanghai, 200433, China
| | - Li Li
- Research Center of Developmental Biology, Second Military Medical University, 800th Xiang Yin Road, Shanghai, 200433, PR China
| | - Xiaolong Shen
- Department of Orthopedics, Changzheng Hospital Affiliated to Second Military Medical University, 415th Feng Yang Road, Shanghai, 200003, PR China
| | - Baifeng Sun
- Department of Orthopedics, Changzheng Hospital Affiliated to Second Military Medical University, 415th Feng Yang Road, Shanghai, 200003, PR China
| | - Ruizhe Wang
- Department of Orthopedics, Changzheng Hospital Affiliated to Second Military Medical University, 415th Feng Yang Road, Shanghai, 200003, PR China
| | - Huajian Zhong
- Department of Orthopedics, Changzheng Hospital Affiliated to Second Military Medical University, 415th Feng Yang Road, Shanghai, 200003, PR China
| | - Qianghui Shi
- Department of Orthopedics, Changzheng Hospital Affiliated to Second Military Medical University, 415th Feng Yang Road, Shanghai, 200003, PR China
| | - Leixin Wei
- Department of Orthopedics, Changzheng Hospital Affiliated to Second Military Medical University, 415th Feng Yang Road, Shanghai, 200003, PR China
| | - Yizhi Zhang
- Department of Orthopedics, Changzheng Hospital Affiliated to Second Military Medical University, 415th Feng Yang Road, Shanghai, 200003, PR China
| | - Yue Wang
- Research Center of Developmental Biology, Second Military Medical University, 800th Xiang Yin Road, Shanghai, 200433, PR China
| | - Chen Xu
- Department of Orthopedics, Changzheng Hospital Affiliated to Second Military Medical University, 415th Feng Yang Road, Shanghai, 200003, PR China
| | - Yang Liu
- Department of Orthopedics, Changzheng Hospital Affiliated to Second Military Medical University, 415th Feng Yang Road, Shanghai, 200003, PR China
| | - Wen Yuan
- Department of Orthopedics, Changzheng Hospital Affiliated to Second Military Medical University, 415th Feng Yang Road, Shanghai, 200003, PR China
| |
Collapse
|
32
|
Arts P, Garland J, Byrne AB, Hardy TS, Babic M, Feng J, Wang P, Ha T, King‐Smith SL, Schreiber AW, Crawford A, Manton N, Moore L, Barnett CP, Scott HS. Paternal mosaicism for a novel PBX1 mutation associated with recurrent perinatal death: Phenotypic expansion of the PBX1-related syndrome. Am J Med Genet A 2020; 182:1273-1277. [PMID: 32141698 PMCID: PMC7217179 DOI: 10.1002/ajmg.a.61541] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 02/09/2020] [Accepted: 02/13/2020] [Indexed: 11/11/2022]
Abstract
Autosomal dominant (de novo) mutations in PBX1 are known to cause congenital abnormalities of the kidney and urinary tract (CAKUT), with or without extra-renal abnormalities. Using trio exome sequencing, we identified a PBX1 p.(Arg107Trp) mutation in a deceased one-day-old neonate presenting with CAKUT, asplenia, and severe bilateral diaphragmatic thinning and eventration. Further investigation by droplet digital PCR revealed that the mutation had occurred post-zygotically in the father, with different variant allele frequencies of the mosaic PBX1 mutation in blood (10%) and sperm (20%). Interestingly, the father had subclinical hydronephrosis in childhood. With an expected recurrence risk of one in five, chorionic villus sampling and prenatal diagnosis for the PBX1 mutation identified recurrence in a subsequent pregnancy. The family opted to continue the pregnancy and the second affected sibling was stillborn at 35 weeks, presenting with similar severe bilateral diaphragmatic eventration, microsplenia, and complete sex reversal (46, XY female). This study highlights the importance of follow-up studies for presumed de novo and low-level mosaic variants and broadens the phenotypic spectrum of developmental abnormalities caused by PBX1 mutations.
Collapse
Affiliation(s)
- Peer Arts
- Genetics and Molecular Pathology Research Laboratory, Centre for Cancer BiologyAn Alliance Between SA Pathology and the University of South AustraliaAdelaideSouth AustraliaAustralia
| | - Jessica Garland
- Paediatric and Reproductive Genetics UnitWomen's and Children's HospitalAdelaideSouth AustraliaAustralia
| | - Alicia B. Byrne
- Genetics and Molecular Pathology Research Laboratory, Centre for Cancer BiologyAn Alliance Between SA Pathology and the University of South AustraliaAdelaideSouth AustraliaAustralia
- School of Pharmacy and Medical SciencesUniversity of South AustraliaAdelaideSouth AustraliaAustralia
- Australian Genomics Health AllianceMelbourneVictoriaAustralia
| | - Tristan S.E. Hardy
- Genetics and Molecular Pathology Research Laboratory, Centre for Cancer BiologyAn Alliance Between SA Pathology and the University of South AustraliaAdelaideSouth AustraliaAustralia
- RepromedDulwichAustralia
- School of MedicineUniversity of AdelaideAdelaideSouth AustraliaAustralia
| | - Milena Babic
- Genetics and Molecular Pathology Research Laboratory, Centre for Cancer BiologyAn Alliance Between SA Pathology and the University of South AustraliaAdelaideSouth AustraliaAustralia
| | - Jinghua Feng
- School of Pharmacy and Medical SciencesUniversity of South AustraliaAdelaideSouth AustraliaAustralia
- ACRF Cancer Genomics Facility, Centre for Cancer BiologyAn Alliance Between SA Pathology and the University of South AustraliaAdelaideSouth AustraliaAustralia
| | - Paul Wang
- ACRF Cancer Genomics Facility, Centre for Cancer BiologyAn Alliance Between SA Pathology and the University of South AustraliaAdelaideSouth AustraliaAustralia
| | - Thuong Ha
- Genetics and Molecular Pathology Research Laboratory, Centre for Cancer BiologyAn Alliance Between SA Pathology and the University of South AustraliaAdelaideSouth AustraliaAustralia
| | - Sarah L. King‐Smith
- Genetics and Molecular Pathology Research Laboratory, Centre for Cancer BiologyAn Alliance Between SA Pathology and the University of South AustraliaAdelaideSouth AustraliaAustralia
- Australian Genomics Health AllianceMelbourneVictoriaAustralia
| | - Andreas W. Schreiber
- School of Pharmacy and Medical SciencesUniversity of South AustraliaAdelaideSouth AustraliaAustralia
- ACRF Cancer Genomics Facility, Centre for Cancer BiologyAn Alliance Between SA Pathology and the University of South AustraliaAdelaideSouth AustraliaAustralia
- School of Biological SciencesUniversity of AdelaideAdelaideSouth AustraliaAustralia
| | - April Crawford
- Department of Anatomical PathologySA Pathology, Women's and Children's HospitalNorth AdelaideSouth AustraliaAustralia
| | - Nick Manton
- Department of Anatomical PathologySA Pathology, Women's and Children's HospitalNorth AdelaideSouth AustraliaAustralia
| | - Lynette Moore
- School of MedicineUniversity of AdelaideAdelaideSouth AustraliaAustralia
- Department of Anatomical PathologySA Pathology, Women's and Children's HospitalNorth AdelaideSouth AustraliaAustralia
| | - Christopher P. Barnett
- Paediatric and Reproductive Genetics UnitWomen's and Children's HospitalAdelaideSouth AustraliaAustralia
- School of MedicineUniversity of AdelaideAdelaideSouth AustraliaAustralia
| | - Hamish S. Scott
- Genetics and Molecular Pathology Research Laboratory, Centre for Cancer BiologyAn Alliance Between SA Pathology and the University of South AustraliaAdelaideSouth AustraliaAustralia
- School of Pharmacy and Medical SciencesUniversity of South AustraliaAdelaideSouth AustraliaAustralia
- School of MedicineUniversity of AdelaideAdelaideSouth AustraliaAustralia
- ACRF Cancer Genomics Facility, Centre for Cancer BiologyAn Alliance Between SA Pathology and the University of South AustraliaAdelaideSouth AustraliaAustralia
- Australian Genomics Health AllianceMelbourneVictoriaAustralia
| |
Collapse
|
33
|
Okura E, Saito S, Natsume T, Morita D, Tanaka M, Kiyokawa N, Nakazawa Y. Multiple heterogeneous bone invasions of B lymphoblastic lymphoma with the TCF3/PBX1 fusion gene: a case report. Int J Hematol 2020; 111:163-165. [PMID: 31828595 DOI: 10.1007/s12185-019-02794-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 12/03/2019] [Accepted: 12/06/2019] [Indexed: 11/25/2022]
Affiliation(s)
- Eri Okura
- Department of Pediatrics, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, 390-8621, Japan
| | - Shoji Saito
- Department of Pediatrics, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, 390-8621, Japan.
| | - Takenori Natsume
- Department of Pediatrics, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, 390-8621, Japan
| | - Daisuke Morita
- Department of Pediatrics, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, 390-8621, Japan
| | - Miyuki Tanaka
- Department of Pediatrics, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, 390-8621, Japan
| | - Nobutaka Kiyokawa
- Department of Pediatric Hematology and Oncology Research, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Yozo Nakazawa
- Department of Pediatrics, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, 390-8621, Japan
| |
Collapse
|
34
|
Orzechowska BU, Wróbel G, Turlej E, Jatczak B, Sochocka M, Chaber R. Antitumor effect of baicalin from the Scutellaria baicalensis radix extract in B-acute lymphoblastic leukemia with different chromosomal rearrangements. Int Immunopharmacol 2020; 79:106114. [PMID: 31881375 DOI: 10.1016/j.intimp.2019.106114] [Citation(s) in RCA: 20] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 11/15/2019] [Accepted: 12/03/2019] [Indexed: 12/20/2022]
Abstract
Acute B-lymphoblastic leukemia (B-ALL) is the most common hematologic malignancy in children. Many cases of B-ALL harbor chromosomal translocations which are often critical determinants of prognosis. Most of them represent altered transcription factors that impact gene transcription or enhance signaling. B-ALLs harboring the mixed-lineage leukemia 1 (MLL1) gene rearrangements represent aggressive, high-risk type of early childhood leukemias that are usually associated with a very poor prognosis. Therefore, there is an urgent need for novel therapeutic agents as well as new treatment strategies. The objective was to examine the vitro inhibitory effects of Scutellaria baicalensis root extract (SBE) in B-ALL cell lines with different chromosomal rearrangements and in leukemic blasts derived from patients' bone marrow (BMCs). In this study we showed that baicalin which is the main component of the SBE possess antitumor activity against all leukemic cell lines especially those with MLL and PBX1 gene rearrangements. Baicalin inhibited cell proliferation, arrested the cell cycle at the G0/G1 phase, and induced cell death through caspase 3/7 activation. Moreover, baicalin treatment inhibited the glycogen synthase kinase-3β (GSK-3β) by suppressing its phosphorylation at Y216, and upregulated the downstream mediator of the cell cycle arrest - cyclin dependent kinase inhibitor p27Kip1. Bone marrow derived blasts from B-ALL patients also exhibited varied sensitivity towards baicalin with 72% patients sensitive to the SBE and baicalin treatment. Taken together, our findings provide new insights into the anti-cancer properties of baicalin by showing its diverse mode of action which might be related to the different genetic background.
Collapse
Affiliation(s)
- Beata U Orzechowska
- Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, R. Weigla 12, 53-114 Wroclaw, Poland.
| | - Grażyna Wróbel
- Dept. of Paediatric Bone Marrow Transplantation, Oncology and Hematology, Wroclaw Medical University, ul. Borowska 213, 50-556 Wroclaw, Poland
| | - Eliza Turlej
- Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, R. Weigla 12, 53-114 Wroclaw, Poland
| | - Bogna Jatczak
- Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, R. Weigla 12, 53-114 Wroclaw, Poland
| | - Marta Sochocka
- Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, R. Weigla 12, 53-114 Wroclaw, Poland
| | - Radosław Chaber
- Clinic of Paediatric Oncology and Haematology, Faculty of Medicine, University of Rzeszow, ul. Kopisto 2a, 35-310 Rzeszow, Poland
| |
Collapse
|
35
|
Liu F, Shi J, Zhang Y, Lian A, Han X, Zuo K, Liu M, Zheng T, Zou F, Liu X, Jin M, Mu Y, Li G, Su G, Liu J. NANOG Attenuates Hair Follicle-Derived Mesenchymal Stem Cell Senescence by Upregulating PBX1 and Activating AKT Signaling. Oxid Med Cell Longev 2019; 2019:4286213. [PMID: 31885790 PMCID: PMC6914946 DOI: 10.1155/2019/4286213] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 09/24/2019] [Accepted: 10/12/2019] [Indexed: 02/06/2023]
Abstract
Stem cells derived from elderly donors or harvested by repeated subculture exhibit a marked decrease in proliferative capacity and multipotency, which not only compromises their therapeutic potential but also raises safety concerns for regenerative medicine. NANOG-a well-known core transcription factor-plays an important role in maintaining the self-renewal and pluripotency of stem cells. Unfortunately, the mechanism that NANOG delays mesenchymal stem cell (MSC) senescence is not well-known until now. In our study, we showed that both ectopic NANOG expression and PBX1 overexpression (i) significantly upregulated phosphorylated AKT (p-AKT) and PARP1; (ii) promoted cell proliferation, cell cycle progression, and osteogenesis; (iii) reduced the number of senescence-associated-β-galactosidase- (SA-β-gal-) positive cells; and (iv) downregulated the expression of p16, p53, and p21. Western blotting and dual-luciferase activity assays showed that ectopic NANOG expression significantly upregulated PBX1 expression and increased PBX1 promoter activity. In contrast, PBX1 knockdown by RNA interference in hair follicle- (HF-) derived MSCs that were ectopically expressing NANOG resulted in the significant downregulation of p-AKT and the upregulation of p16 and p21. Moreover, blocking AKT with the PI3K/AKT inhibitor LY294002 or knocking down AKT via RNA interference significantly decreased PBX1 expression, while increasing p16 and p21 expression and the number of SA-β-gal-positive cells. In conclusion, our findings show that NANOG delays HF-MSC senescence by upregulating PBX1 and activating AKT signaling and that a feedback loop likely exists between PBX1 and AKT signaling.
Collapse
Affiliation(s)
- Feilin Liu
- Department of Toxicology, School of Public Health, Jilin University, Changchun, China
- Department of Ophthalmology, The Second Hospital of Jilin University, Changchun, China
| | - Jiahong Shi
- Department of Toxicology, School of Public Health, Jilin University, Changchun, China
- Department of Ultrasound, The China-Japan Union Hospital of Jilin University, Changchun, China
| | - Yingyao Zhang
- Department of Toxicology, School of Public Health, Jilin University, Changchun, China
| | - Aobo Lian
- Department of Toxicology, School of Public Health, Jilin University, Changchun, China
| | - Xing Han
- Department of Toxicology, School of Public Health, Jilin University, Changchun, China
| | - Kuiyang Zuo
- Department of Toxicology, School of Public Health, Jilin University, Changchun, China
| | - Mingsheng Liu
- Department of Toxicology, School of Public Health, Jilin University, Changchun, China
| | - Tong Zheng
- Department of Toxicology, School of Public Health, Jilin University, Changchun, China
| | - Fei Zou
- Department of Toxicology, School of Public Health, Jilin University, Changchun, China
| | - Xiaomei Liu
- Department of Toxicology, School of Public Health, Jilin University, Changchun, China
| | - Minghua Jin
- Department of Toxicology, School of Public Health, Jilin University, Changchun, China
| | - Ying Mu
- Research Center for Analytical Instrumentation, Institute of Cyber-Systems and Control, State Key Laboratory of Industrial Control Technology, Zhejiang University, Hangzhou, China
| | - Gang Li
- Department of Orthopaedics & Traumatology, Li Ka Shing Institute of Health Sciences, Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong, China
| | - Guanfang Su
- Department of Ophthalmology, The Second Hospital of Jilin University, Changchun, China
| | - Jinyu Liu
- Department of Toxicology, School of Public Health, Jilin University, Changchun, China
| |
Collapse
|
36
|
Mestre-Alagarda C, Nieto G, Terrádez L, Monteagudo C. Primary cutaneous biphasic sarcomatoid basal cell carcinoma with myoepithelial carcinoma differentiation: A new variant. J Cutan Pathol 2019; 46:949-953. [PMID: 31278765 DOI: 10.1111/cup.13543] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [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: 03/25/2019] [Revised: 06/14/2019] [Accepted: 07/03/2019] [Indexed: 12/01/2022]
Abstract
Isolated cases of basal cell carcinoma (BCC) with partial myoepithelial component have been described. However, myoepithelial differentiation has not been described in sarcomatoid basal cell carcinomas, which usually show features resembling osteosarcoma, chondrosarcoma, or leiomyosarcoma. We report a case of an 87-year-old man with a forehead lesion that histologically showed a minor component of conventional nodular BCC in transition with a major biphasic sarcomatoid growth composed of invasive spindle-cell and epithelial-like components, the latter with a reticular pattern and scattered ductal structures. Both components showed cytological atypia and high mitotic rate (26/10HPF), with atypical mitotic figures. BER-EP4 immunostaining was exclusively found in the nodular BCC component whereas the sarcomatoid component revealed immunostaining for α-smooth muscle actin (SMA), muscle-specific actin (MSA), calponin, and p63 in both epithelial-like and spindle-cell populations. Focal immunoreactivity was observed in the epithelial component for S100 and glial fibrillary acidic protein (GFAP). Furthermore, EWSR1-PBX1 gene fusion was also detected. This is to our knowledge, the first fully documented case of biphasic sarcomatoid BCC with myoepithelial carcinoma differentiation.
Collapse
Affiliation(s)
- Claudia Mestre-Alagarda
- Department of Pathology, Hospital Clínico Universitario, Universitat de Valencia, Valencia, Spain
| | - Gema Nieto
- Department of Pathology, Hospital Clínico Universitario, Universitat de Valencia, Valencia, Spain
| | - Liria Terrádez
- Department of Pathology, Hospital Clínico Universitario, Universitat de Valencia, Valencia, Spain
| | - Carlos Monteagudo
- Department of Pathology, Hospital Clínico Universitario, Universitat de Valencia, Valencia, Spain
| |
Collapse
|
37
|
Eudy AM, Voora D, Myers RA, Clowse MEB. Effect of aspirin response signature gene expression on preterm birth and preeclampsia among women with lupus: a pilot study. Lupus 2019; 28:1640-1647. [PMID: 31684818 PMCID: PMC7001736 DOI: 10.1177/0961203319886069] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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] [Indexed: 12/13/2022]
Abstract
BACKGROUND Women with lupus have an increased risk of preeclampsia and preterm birth, and aspirin 81 mg/day is recommended as a preventative measure for preeclampsia. This pilot study quantified the association between a 60-gene aspirin response signature (ARS) gene expression with preterm birth and preeclampsia risk among women with lupus taking aspirin. METHODS The analysis included 48 RNA samples from 23 pregnancies in the Duke Autoimmunity Pregnancy Registry. RNA was isolated from peripheral blood, and quantitative polymerase chain reaction was performed for ARS genes. The primary outcome was poor pregnancy outcome (preeclampsia or preterm birth). Gene expression was modeled as a response to presence or absence of a poor pregnancy outcome using linear regression models, stratified by trimester. RESULTS Of the 23 pregnancies, nine delivered preterm and four had preeclampsia. Expression of PBX1 and MMD was higher in the second trimester among patients who experienced a poor pregnancy outcome compared to those who did not. However, in a global test of all ARS genes, we identified no association between expression of ARS genes and poor pregnancy outcomes. CONCLUSION Our pilot study identified two candidate genes that are reflective of the platelet function response to aspirin. Further work is needed to determine the role of these genes in identifying women with lupus at high risk for preeclampsia and preterm delivery despite aspirin therapy.
Collapse
Affiliation(s)
- Amanda M. Eudy
- Division of Rheumatology & Immunology, Duke University School of Medicine, Durham, NC, USA
| | - Deepak Voora
- Duke Center for Applied Genomics & Precision Medicine, Duke University, Durham, NC, USA
| | - Rachel A. Myers
- Duke Center for Applied Genomics & Precision Medicine, Duke University, Durham, NC, USA
| | - Megan E. B. Clowse
- Division of Rheumatology & Immunology, Duke University School of Medicine, Durham, NC, USA
| |
Collapse
|
38
|
Jiang Y, Liu F, Zou F, Zhang Y, Wang B, Zhang Y, Lian A, Han X, Liu Z, Liu X, Jin M, Wang D, Li G, Liu J. PBX homeobox 1 enhances hair follicle mesenchymal stem cell proliferation and reprogramming through activation of the AKT/glycogen synthase kinase signaling pathway and suppression of apoptosis. Stem Cell Res Ther 2019; 10:268. [PMID: 31443676 PMCID: PMC6708256 DOI: 10.1186/s13287-019-1382-y] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Revised: 08/08/2019] [Accepted: 08/12/2019] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND PBX homeobox 1 (PBX1) is involved in the maintenance of the pluripotency of human embryonic and hematopoietic stem cells; however, the effects of PBX1 in the self-renewal and reprogramming of hair follicle mesenchymal stem cells (HF-MSCs) are unclear. The AKT/glycogen synthase kinase (GSK) 3β pathway regulates cell metabolism, proliferation, apoptosis, and reprogramming, and p16 and p21, which act downstream of this pathway, regulate cell proliferation, cell cycle, and apoptosis induced by reprogramming. Here, we aimed to elucidate the roles of PBX1 in regulating the proliferation and reprogramming of HF-MSCs. METHODS A lentiviral vector designed to carry the PBX1 sequence or PBX1 short hairpin RNA sequence was used to overexpress or knock down PBX1. The roles of PBX1 in proliferation and apoptosis were investigated by flow cytometry. Real-time polymerase chain reaction was performed to evaluate pluripotent gene expression. Dual-luciferase reporter assays were performed to examine the transcriptional activity of the NANOG promoter. Western blotting was performed to identify the molecules downstream of PBX1 involved in proliferation and reprogramming. Caspase3 activity was detected to assess HF-MSC reprogramming. The phosphatidylinositol 3-kinase/AKT inhibitor LY294002 was used to inhibit the phosphorylation and activity of AKT. RESULTS Overexpression of PBX1 in HF-MSCs increased the phosphorylation of AKT and nuclear translocation of β-catenin, resulting in the progression of the cell cycle from G0/G1 to S phase. Moreover, transfection with a combination of five transcription factors (SOMKP) in HF-MSCs enhanced the formation of alkaline phosphatase-stained colonies compared with that in HF-MSCs transfected with a combination of four transcription factors (SOMK). PBX1 upregulated Nanog transcription by activating the promoter and promoted the expression of endogenous SOX2 and OCT4. Furthermore, PBX1 expression activated the AKT/glycogen synthase kinase (GSK) 3β pathway and reduced apoptosis during the early stages of reprogramming. Inhibition of phospho-AKT or knockdown of PBX1 promoted mitochondrion-mediated apoptosis and reduced reprogramming efficiency. CONCLUSIONS PBX1 enhanced HF-MSC proliferation, and HF-MSCs induced pluripotent stem cells (iPSC) generation by activating the AKT/GSK3β signaling pathway. During the reprogramming of HF-MSCs into HF-iPSCs, PBX1 activated the NANOG promoter, upregulated NANOG, and inhibited mitochondrion-mediated apoptosis via the AKT/GSK3β pathway during the early stages of reprogramming.
Collapse
Affiliation(s)
- Yixu Jiang
- The Key Laboratory of Pathobiology, Ministry of Education, Department of Pathology, College of Basic Medical Sciences, Jilin University, 126 Xinmin Avenue, Changchun, 130021 China
| | - Feilin Liu
- Department of Ophthalmology, The Second Hospital of Jilin University, Changchun, 130021 China
| | - Fei Zou
- Department of Pediatrics, The First Hospital of Jilin University, Changchun, 130021 China
| | - Yingyao Zhang
- Department of Toxicology, School of Public Health, Jilin University, 1163 Xinmin Avenue, Changchun, 130021 China
| | - Bo Wang
- Department of Toxicology, School of Public Health, Jilin University, 1163 Xinmin Avenue, Changchun, 130021 China
| | - Yuying Zhang
- Department of Toxicology, School of Public Health, Jilin University, 1163 Xinmin Avenue, Changchun, 130021 China
| | - Aobo Lian
- Department of Toxicology, School of Public Health, Jilin University, 1163 Xinmin Avenue, Changchun, 130021 China
| | - Xing Han
- Department of Toxicology, School of Public Health, Jilin University, 1163 Xinmin Avenue, Changchun, 130021 China
| | - Zinan Liu
- Department of Toxicology, School of Public Health, Jilin University, 1163 Xinmin Avenue, Changchun, 130021 China
| | - Xiaomei Liu
- Department of Toxicology, School of Public Health, Jilin University, 1163 Xinmin Avenue, Changchun, 130021 China
| | - Minghua Jin
- Department of Toxicology, School of Public Health, Jilin University, 1163 Xinmin Avenue, Changchun, 130021 China
| | - Dianliang Wang
- Stem Cell and Tissue Engineering Research Laboratory, PLA Rocket Force Characteristic Medical Center, Beijing, 100088 China
| | - Gang Li
- Department of Orthopaedics & Traumatology, Li Ka Shing Institute of Health Sciences, Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong, 999077 China
| | - Jinyu Liu
- The Key Laboratory of Pathobiology, Ministry of Education, Department of Pathology, College of Basic Medical Sciences, Jilin University, 126 Xinmin Avenue, Changchun, 130021 China
- Department of Toxicology, School of Public Health, Jilin University, 1163 Xinmin Avenue, Changchun, 130021 China
| |
Collapse
|
39
|
Eozenou C, Bashamboo A, Bignon-Topalovic J, Merel T, Zwermann O, Lourenco D, Lottmann H, Lichtenauer U, Rojo S, Beuschlein F, McElreavey K, Brauner R. The TALE homeodomain of PBX1 is involved in human primary testis-determination. Hum Mutat 2019; 40:1071-1076. [PMID: 31058389 DOI: 10.1002/humu.23780] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [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: 08/24/2018] [Revised: 04/28/2019] [Accepted: 04/30/2019] [Indexed: 11/08/2022]
Abstract
Human sex-determination is a poorly understood genetic process, where gonad development depends on a cell fate decision that occurs in a somatic cell to commit to Sertoli (male) or granulosa (female) cells. A lack of testis-determination in the human results in 46,XY gonadal dysgenesis. A minority of these cases is explained by mutations in genes known to be involved in sex-determination. Here, we identified a de novo missense mutation, p.Arg235Gln in the highly conserved TALE homeodomain of the transcription factor Pre-B-Cell Leukemia Transcription Factor 1 (PBX1) in a child with 46,XY gonadal dysgenesis and radiocubital synostosis. This mutation, within the nuclear localization signal of the protein, modifies the ability of the PBX1 protein to localize to the nucleus. The mutation abolishes the physical interaction of PBX1 with two proteins known to be involved in testis-determination, CBX2 and EMX2. These results provide a mechanism whereby this mutation results specifically in the absence of testis-determination.
Collapse
Affiliation(s)
- Caroline Eozenou
- Human Developmental Genetics, CNRS UMR3738, Institut Pasteur, Paris, France
| | - Anu Bashamboo
- Human Developmental Genetics, CNRS UMR3738, Institut Pasteur, Paris, France
| | | | - Tiphanie Merel
- Human Developmental Genetics, CNRS UMR3738, Institut Pasteur, Paris, France
| | - Oliver Zwermann
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Munich, Germany
| | - Diana Lourenco
- Human Developmental Genetics, CNRS UMR3738, Institut Pasteur, Paris, France
| | - Henri Lottmann
- Assistance Publique-Hôpitaux de Paris, Hôpital Necker-Enfants Malades, Service de chirurgie viscérale pédiatrique, Paris, France
| | - Urs Lichtenauer
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Munich, Germany
| | - Sandra Rojo
- Human Developmental Genetics, CNRS UMR3738, Institut Pasteur, Paris, France
| | - Felix Beuschlein
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Munich, Germany
- Klinik für Endokrinologie, Diabetologie und Klinische Ernährung, UniversitätsSpital Zürich, Zurich, Switzerland
| | - Ken McElreavey
- Human Developmental Genetics, CNRS UMR3738, Institut Pasteur, Paris, France
| | - Raja Brauner
- Pediatric Endocrinology Unit, Foundation Ophtalmologique Adolphe de Rothschild and Université Paris Descartes, Paris, France
| |
Collapse
|
40
|
Dobrotkova V, Chlapek P, Jezova M, Adamkova K, Mazanek P, Sterba J, Veselska R. Prediction of neuroblastoma cell response to treatment with natural or synthetic retinoids using selected protein biomarkers. PLoS One 2019; 14:e0218269. [PMID: 31188873 PMCID: PMC6561640 DOI: 10.1371/journal.pone.0218269] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2019] [Accepted: 05/29/2019] [Indexed: 01/20/2023] Open
Abstract
Although the administration of retinoids represents an important part of treatment for children suffering from high-risk neuroblastomas, approximately 50% of these patients do not respond to this therapy or develop resistance to retinoids during treatment. Our study focused on the comparative analysis of the expression of five genes and corresponding proteins (DDX39A, HMGA1, HMGA2, HOXC9 and PBX1) that have recently been discussed as possible predictive biomarkers of clinical response to retinoid differentiation therapy. Expression of these five candidate biomarkers was evaluated at both the mRNA and protein level in the same subset of 8 neuroblastoma cell lines after treatment with natural or synthetic retinoids. We found that the cell lines that were HMGA2-positive and/or HOXC9-negative have a reduced sensitivity to retinoids. Furthermore, the experiments revealed that the retinoid-sensitive cell lines showed a uniform pattern of change after treatment with both natural and sensitive retinoids: increased DDX39A and decreased PBX1 protein levels. Our results showed that in NBL cells, these putative protein biomarkers are associated with sensitivity or resistance to retinoids, and their endogenous or induced expression can distinguish between these two phenotypes.
Collapse
Affiliation(s)
- Viera Dobrotkova
- Laboratory of Tumor Biology, Department of Experimental Biology, Faculty of Science, Masaryk University, Kotlarska, Czech Republic
- International Clinical Research Center, St. Anne’s University Hospital, Pekarska, Czech Republic
| | - Petr Chlapek
- Laboratory of Tumor Biology, Department of Experimental Biology, Faculty of Science, Masaryk University, Kotlarska, Czech Republic
- International Clinical Research Center, St. Anne’s University Hospital, Pekarska, Czech Republic
| | - Marta Jezova
- Department of Pathology, University Hospital Brno and Faculty of Medicine, Masaryk University, Jihlavska, Czech Republic
| | - Katerina Adamkova
- Laboratory of Tumor Biology, Department of Experimental Biology, Faculty of Science, Masaryk University, Kotlarska, Czech Republic
| | - Pavel Mazanek
- Department of Pediatric Oncology, University Hospital Brno and Faculty of Medicine, Masaryk University, Cernopolni, Czech Republic
| | - Jaroslav Sterba
- International Clinical Research Center, St. Anne’s University Hospital, Pekarska, Czech Republic
- Department of Pediatric Oncology, University Hospital Brno and Faculty of Medicine, Masaryk University, Cernopolni, Czech Republic
| | - Renata Veselska
- Laboratory of Tumor Biology, Department of Experimental Biology, Faculty of Science, Masaryk University, Kotlarska, Czech Republic
- International Clinical Research Center, St. Anne’s University Hospital, Pekarska, Czech Republic
- Department of Pediatric Oncology, University Hospital Brno and Faculty of Medicine, Masaryk University, Cernopolni, Czech Republic
| |
Collapse
|
41
|
Hatzistergos KE, Williams AR, Dykxhoorn D, Bellio MA, Yu W, Hare JM. Tumor Suppressors RB1 and CDKN2a Cooperatively Regulate Cell-Cycle Progression and Differentiation During Cardiomyocyte Development and Repair. Circ Res 2019; 124:1184-1197. [PMID: 30744497 DOI: 10.1161/circresaha.118.314063] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [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] [Indexed: 12/12/2022]
Abstract
RATIONALE Although rare cardiomyogenesis is reported in the adult mammalian heart, whether this results from differentiation or proliferation of cardiomyogenic cells remains controversial. The tumor suppressor genes RB1 (retinoblastoma) and CDKN2a (cyclin-dependent kinase inhibitor 2a) are critical cell-cycle regulators, but their roles in human cardiomyogenesis remains unclear. OBJECTIVE We hypothesized that developmental activation of RB1 and CDKN2a cooperatively cause permanent cell-cycle withdrawal of human cardiac precursors (CPCs) driving terminal differentiation into mature cardiomyocytes, and that dual inactivation of these tumor suppressor genes promotes myocyte cell-cycle reentry. METHODS AND RESULTS Directed differentiation of human pluripotent stem cells (hPSCs) into cardiomyocytes revealed that RB1 and CDKN2a are upregulated at the onset of cardiac precursor specification, simultaneously with GATA4 (GATA-binding protein 4) homeobox genes PBX1 (pre-B-cell leukemia transcription factor 1) and MEIS1 (myeloid ecotropic viral integration site 1 homolog), and remain so until terminal cardiomyocyte differentiation. In both GATA4+ hPSC cardiac precursors and postmitotic hPSC-cardiomyocytes, RB1 is hyperphosphorylated and inactivated. Transient, stage-specific, depletion of RB1 during hPSC differentiation enhances cardiomyogenesis at the cardiac precursors stage, but not in terminally differentiated hPSC-cardiomyocytes, by transiently upregulating GATA4 expression through a cell-cycle regulatory pathway involving CDKN2a. Importantly, cytokinesis in postmitotic hPSC-cardiomyocytes can be induced with transient, dual RB1, and CDKN2a silencing. The relevance of this pathway in vivo was suggested by findings in a porcine model of cardiac cell therapy post-MI, whereby dual RB1 and CDKN2a inactivation in adult GATA4+ cells correlates with the degree of scar size reduction and endogenous cardiomyocyte mitosis, particularly in response to combined transendocardial injection of adult human hMSCs (bone marrow-derived mesenchymal stromal cells) and cKit+ cardiac cells. CONCLUSIONS Together these findings reveal an important and coordinated role for RB1 and CDKN2a in regulating cell-cycle progression and differentiation during human cardiomyogenesis. Moreover, transient, dual inactivation of RB1 and CDKN2a in endogenous adult GATA4+ cells and cardiomyocytes mediates, at least in part, the beneficial effects of cell-based therapy in a post-MI large mammalian model, a finding with potential clinical implications.
Collapse
Affiliation(s)
- Konstantinos E Hatzistergos
- From the Interdisciplinary Stem Cell Institute (K.E.H., A.R.W., M.A.B., W.Y., J.M.H.), University of Miami, Miller School of Medicine, FL
- Department of Cell Biology (K.E.H.), University of Miami, Miller School of Medicine, FL
| | - Adam R Williams
- From the Interdisciplinary Stem Cell Institute (K.E.H., A.R.W., M.A.B., W.Y., J.M.H.), University of Miami, Miller School of Medicine, FL
- Department of Surgery (A.R.W.), University of Miami, Miller School of Medicine, FL
- Department of Surgery, Duke University School of Medicine, Durham, NC (A.R.W.)
| | - Derek Dykxhoorn
- Department of Human Genetics (D.D.), University of Miami, Miller School of Medicine, FL
- John P. Hussman Institute for Human Genomics (D.D.), University of Miami, Miller School of Medicine, FL
| | - Michael A Bellio
- From the Interdisciplinary Stem Cell Institute (K.E.H., A.R.W., M.A.B., W.Y., J.M.H.), University of Miami, Miller School of Medicine, FL
| | - Wendou Yu
- From the Interdisciplinary Stem Cell Institute (K.E.H., A.R.W., M.A.B., W.Y., J.M.H.), University of Miami, Miller School of Medicine, FL
- Department of Pediatrics (W.Y.), University of Miami, Miller School of Medicine, FL
| | - Joshua M Hare
- From the Interdisciplinary Stem Cell Institute (K.E.H., A.R.W., M.A.B., W.Y., J.M.H.), University of Miami, Miller School of Medicine, FL
- Department of Molecular and Cellular Pharmacology (J.M.H.), University of Miami, Miller School of Medicine, FL
- Cardiology Division, Department of Medicine (J.M.H.), University of Miami, Miller School of Medicine, FL
| |
Collapse
|
42
|
Liu Y, Xu X, Lin P, He Y, Zhang Y, Cao B, Zhang Z, Sethi G, Liu J, Zhou X, Mao X. Inhibition of the deubiquitinase USP9x induces pre-B cell homeobox 1 (PBX1) degradation and thereby stimulates prostate cancer cell apoptosis. J Biol Chem 2019; 294:4572-4582. [PMID: 30718275 PMCID: PMC6433065 DOI: 10.1074/jbc.ra118.006057] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [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: 09/29/2018] [Revised: 01/29/2019] [Indexed: 01/21/2023] Open
Abstract
Chemoresistance is a leading obstacle in effective management of advanced prostate cancer (PCa). A better understanding of the molecular mechanisms involved in PCa chemoresistance could improve treatment of patients with PCa. In the present study, using immune histochemical, chemistry, and precipitation assays with cells from individuals with benign or malignant prostate cancer or established PCa cell lines, we found that the oncogenic transcription factor pre-B cell leukemia homeobox-1 (PBX1) promotes PCa cell proliferation and confers to resistance against common anti-cancer drugs such as doxorubicin and cisplatin. We observed that genetic PBX1 knockdown abrogates this resistance, and further experiments revealed that PBX1 stability was modulated by the ubiquitin-proteasomal pathway. To directly probe the impact of this pathway on PBX1 activity, we screened for PBX1-specific deubiquitinases (Dubs) and found that ubiquitin-specific peptidase 9 X-linked (USP9x) interacted with and stabilized the PBX1 protein by attenuating its Lys-48-linked polyubiquitination. Moreover, the USP9x inhibitor WP1130 markedly induced PBX1 degradation and promoted PCa cell apoptosis. The results in this study indicate that PBX1 confers to PCa chemoresistance and identify USP9x as a Dub of PBX1. We concluded that targeting the USP9x/PBX1 axis could be a potential therapeutic strategy for managing advanced prostate cancer.
Collapse
Affiliation(s)
- Yan Liu
- From the Key Laboratory of Protein Modification and Degradation, School of Basic Medical Sciences, Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou 511436, China
- the Department of Pharmacology, Jiangsu Key Laboratory of Neuropsychiatric Diseases, College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215123, China
- Sichuan Kelun Pharmaceutical Co., Ltd., Chengdu, Sichuan 610071, China
| | - Xiaofeng Xu
- the Department of Urology, Nanjing Jinling Hospital, School of Medicine, Nanjing University, Nanjing, Jiangsu 21002, China
| | - Peng Lin
- the Department of Pharmacology, Jiangsu Key Laboratory of Neuropsychiatric Diseases, College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215123, China
| | - Yuanming He
- the Department of Pharmacology, Jiangsu Key Laboratory of Neuropsychiatric Diseases, College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215123, China
| | - Yawen Zhang
- the Department of Pharmacology, Jiangsu Key Laboratory of Neuropsychiatric Diseases, College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215123, China
| | - Biyin Cao
- the Department of Pharmacology, Jiangsu Key Laboratory of Neuropsychiatric Diseases, College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215123, China
| | - Zubin Zhang
- From the Key Laboratory of Protein Modification and Degradation, School of Basic Medical Sciences, Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou 511436, China
- the Department of Pharmacology, Jiangsu Key Laboratory of Neuropsychiatric Diseases, College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215123, China
| | - Gautam Sethi
- the Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, 117600 Singapore
| | - Jinbao Liu
- From the Key Laboratory of Protein Modification and Degradation, School of Basic Medical Sciences, Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou 511436, China
| | - Xiumin Zhou
- the Department of Oncology, the First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, China, and
| | - Xinliang Mao
- From the Key Laboratory of Protein Modification and Degradation, School of Basic Medical Sciences, Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou 511436, China,
- the Department of Pharmacology, Jiangsu Key Laboratory of Neuropsychiatric Diseases, College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215123, China
| |
Collapse
|
43
|
Lin CH, Wang Z, Duque-Afonso J, Wong SHK, Demeter J, Loktev AV, Somervaille TCP, Jackson PK, Cleary ML. Oligomeric self-association contributes to E2A-PBX1-mediated oncogenesis. Sci Rep 2019; 9:4915. [PMID: 30894657 PMCID: PMC6426973 DOI: 10.1038/s41598-019-41393-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2018] [Accepted: 03/04/2019] [Indexed: 11/16/2022] Open
Abstract
The PBX1 homeodomain transcription factor is converted by t(1;19) chromosomal translocations in acute leukemia into the chimeric E2A-PBX1 oncoprotein. Fusion with E2A confers potent transcriptional activation and constitutive nuclear localization, bypassing the need for dimerization with protein partners that normally stabilize and regulate import of PBX1 into the nucleus, but the mechanisms underlying its oncogenic activation are incompletely defined. We demonstrate here that E2A-PBX1 self-associates through the PBX1 PBC-B domain of the chimeric protein to form higher-order oligomers in t(1;19) human leukemia cells, and that this property is required for oncogenic activity. Structural and functional studies indicate that self-association facilitates the binding of E2A-PBX1 to DNA. Mutants unable to self-associate are transformation defective, however their oncogenic activity is rescued by the synthetic oligomerization domain of FKBP, which confers conditional transformation properties on E2A-PBX1. In contrast to self-association, PBX1 protein domains that mediate interactions with HOX DNA-binding partners are dispensable. These studies suggest that oligomeric self-association may compensate for the inability of monomeric E2A-PBX1 to stably bind DNA and circumvents protein interactions that otherwise modulate PBX1 stability, nuclear localization, DNA binding, and transcriptional activity. The unique dependence on self-association for E2A-PBX1 oncogenic activity suggests potential approaches for mechanism-based targeted therapies.
Collapse
MESH Headings
- Basic Helix-Loop-Helix Transcription Factors/genetics
- Basic Helix-Loop-Helix Transcription Factors/metabolism
- Carcinogenesis/genetics
- Cell Line, Tumor
- Chromosomes, Human, Pair 1/chemistry
- Chromosomes, Human, Pair 19/chemistry
- DNA, Neoplasm/genetics
- DNA, Neoplasm/metabolism
- Gene Expression Regulation, Neoplastic
- HEK293 Cells
- Humans
- Leukemia, Myeloid, Acute/genetics
- Leukemia, Myeloid, Acute/metabolism
- Leukemia, Myeloid, Acute/pathology
- Oncogene Proteins, Fusion/genetics
- Oncogene Proteins, Fusion/metabolism
- Pre-B-Cell Leukemia Transcription Factor 1/genetics
- Pre-B-Cell Leukemia Transcription Factor 1/metabolism
- Protein Binding
- Protein Multimerization
- Protein Stability
- Tacrolimus Binding Proteins/genetics
- Tacrolimus Binding Proteins/metabolism
- Transcription, Genetic
- Translocation, Genetic
Collapse
Affiliation(s)
- Chiou-Hong Lin
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Zhong Wang
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, 94305, USA
- Sun Yat-Sen University, School of Pharmaceutical Sciences, Guangzhou, 510006, China
| | - Jesús Duque-Afonso
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, 94305, USA
- Department of Hematology and Oncology, University Medical Center Freiburg, Freiburg, Germany
| | - Stephen Hon-Kit Wong
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Janos Demeter
- Baxter Laboratory for Stem Cell Biology, Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Alexander V Loktev
- Baxter Laboratory for Stem Cell Biology, Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Tim C P Somervaille
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, 94305, USA
- Leukaemia Biology Laboratory, Cancer Research UK Manchester Institute, The University of Manchester, Manchester, M20 4GJ, UK
| | - Peter K Jackson
- Baxter Laboratory for Stem Cell Biology, Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Michael L Cleary
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, 94305, USA.
| |
Collapse
|
44
|
Sun M, Lou J, Li Q, Chen J, Li Y, Li D, Yuan H, Liu Y. Prenatal findings and molecular cytogenetic analyses of a de novo interstitial deletion of 1q23.3 encompassing PBX1 gene. Taiwan J Obstet Gynecol 2019; 58:292-295. [PMID: 30910156 DOI: 10.1016/j.tjog.2019.01.022] [Citation(s) in RCA: 4] [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] [Subscribe] [Scholar Register] [Accepted: 12/21/2018] [Indexed: 01/11/2023] Open
Abstract
OBJECTIVES To present the prenatal findings and the molecular cytogenetic analyses of a de novo interstitial deletion of 1q23.3 encompassing PBX1 gene. CASE REPORT A 32-year-old woman (gravida 1, para 0) underwent amniocentesis at 26 weeks' gestation because of constant small fetal kidneys on prenatal ultrasound. Chromosome microarray analysis (CMA) detected a de novo deletion of 1.871 Mb at 1q23.3. The deletion encompassed 2 genes of PBX1 and LMX1A. PBX1 haploinsufficiency had been reported to lead syndromic congenital anomalies of kidney and urinary tract (CAKUT) in humans. Furthermore, at 31 weeks' gestation, borderline oligohydramnios and restricted fetal dimensions were revealed. Ultimately, the pregnancy was terminated at 32 weeks with a 1500-g female fetus presenting polydactyl of left hand. CONCLUSIONS The shared phenotypes between this case and the previously published prenatal cases demonstrate that loss of function mutation in PBX1 should be suspicious in fetus with bilateral renal hypoplasia, oligohydramnios and intrauterine growth retardation (IUGR).
Collapse
Affiliation(s)
- Manna Sun
- Prenatal Diagnostic Center, Dongguan Maternal and Children Health Hospital, Dongguan, Guangdong, People's Republic of China
| | - Jiwu Lou
- Prenatal Diagnostic Center, Dongguan Maternal and Children Health Hospital, Dongguan, Guangdong, People's Republic of China
| | - Qiaoyi Li
- Prenatal Diagnostic Center, Dongguan Maternal and Children Health Hospital, Dongguan, Guangdong, People's Republic of China
| | - Jianhong Chen
- Prenatal Diagnostic Center, Huizhou Women & Children Hospital, Huizhou, Guangdong, People's Republic of China
| | - Yujuan Li
- Prenatal Diagnostic Center, Dongguan Maternal and Children Health Hospital, Dongguan, Guangdong, People's Republic of China
| | - Dongzhi Li
- Prenatal Diagnostic Center, Guangzhou Women & Children Medical Center Affiliated to Guangzhou Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Haiming Yuan
- Prenatal Diagnostic Center, Dongguan Maternal and Children Health Hospital, Dongguan, Guangdong, People's Republic of China
| | - Yanhui Liu
- Prenatal Diagnostic Center, Dongguan Maternal and Children Health Hospital, Dongguan, Guangdong, People's Republic of China.
| |
Collapse
|
45
|
Melo-Felippe FB, Fontenelle LF, Kohlrausch FB. Gene variations in PBX1, LMX1A and SLITRK1 are associated with obsessive-compulsive disorder and its clinical features. J Clin Neurosci 2019; 61:180-185. [PMID: 30377043 DOI: 10.1016/j.jocn.2018.10.042] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [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: 05/14/2018] [Accepted: 10/07/2018] [Indexed: 12/19/2022]
Abstract
Genetic factors probably influence OCD development and a current hypothesis proposes that genes involved in the development of the central nervous system (CNS) are related to OCD. The aim of this study was to analyze six Single Nucleotide Polymorphisms (SNPs) in five genes with functions related to neurodevelopment in OCD. A total of 203 patient and 203 control samples were genotyped using the TaqMan® methodology. Statistically significant associations between OCD and PBX1 (rs2275558) in total sample (P = 0.002) and in males (P = 0.0003) were observed. Concerning symptom dimensions, the expression of neutralization showed a statistical significant association with LMX1A (rs4657411, P = 0.004) in total sample. We also observed significant association between LMX1A (rs4657411) and washing dimension in females (P = 0.01). Additionally, SLITRK1 (rs9593835) was significantly associated with checking dimension in male patients (P = 0.04). Our results indicate an important influence of neurodevelopment genes in the OCD susceptibility. Additional studies with larger samples are needed to confirm these results.
Collapse
Affiliation(s)
- Fernanda B Melo-Felippe
- Departamento de Biologia Geral, Instituto de Biologia, Universidade Federal Fluminense (UFF), Niterói, Brazil
| | - Leonardo F Fontenelle
- Programa de Transtornos Obsessivo-Compulsivos e de Ansiedade, Instituto de Psiquiatria, Universidade Federal do Rio de Janeiro (UFRJ), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil; Instituto D'Or de Pesquisa e Ensino (IDOR), Rio de Janeiro, Brazil; School of Psychological Sciences, MONASH University, Melbourne, Australia
| | - Fabiana B Kohlrausch
- Departamento de Biologia Geral, Instituto de Biologia, Universidade Federal Fluminense (UFF), Niterói, Brazil.
| |
Collapse
|
46
|
Reis ST, Leite KRM, Marchini GS, Guimarães RM, Viana NI, Pimenta RCA, Torricelli FC, Danilovic A, Vicentini FC, Nahas WC, Srougi M, Mazzucchi E. Polymorphism in the PBX1 gene is related to cystinuria in Brazilian families. J Cell Mol Med 2019; 23:1593-1597. [PMID: 30450686 PMCID: PMC6349145 DOI: 10.1111/jcmm.13981] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Accepted: 10/02/2018] [Indexed: 11/27/2022] Open
Abstract
The aim of our study was to determine regions of loss of heterozygosity, copy number variation analysis, and single nucleotide polymorphisms (SNPs) in Brazilian patients with cystinuria. A linkage study was performed using DNA samples from six patients with cystinuria and six healthy individuals. Genotyping was done with the Genome-Wide Human SNP 6.0 arrays (Affymetrix, Inc., Santa Clara, CA, USA). For validation, SNPs were genotyped using a TaqMan® SNP Genotyping Assay Kit. The homozygote polymorphic genotype of SNP rs17383719 in the gene PBX1 was more frequent (P = 0.015) in cystinuric patients. The presence of the polymorphic allele for this SNP increased the chance of cystinuria by 3.0-fold (P = 0.036). Pre-B-cell leukaemia transcription factor 1 (PBX1) was overexpressed 3.3-fold in patients with cystinuria. However, when we compared the gene expression findings with the genotyping, patients with a polymorphic homozygote genotype had underexpression of PBX1, while patients with a heterozygote or wild-type homozygote genotype had overexpression of PBX1. There is a 3-fold increase in the risk of the development of cystinuria among individuals with this particular SNP in the PBX1 gene. We postulate that the presence of this SNP alters the expression of PBX1, thus affecting the renal absorption of cystine and other amino acids, predisposing to nephrolithiasis.
Collapse
Affiliation(s)
- Sabrina T. Reis
- Laboratory of Medical Investigation (LIM55)Division of UrologyUniversity of Sao Paulo Medical SchoolSao PauloBrazil
- Endourology and Stone Disease SectionDivision of UrologyUniversity of Sao Paulo Medical SchoolSao PauloBrazil
| | - Katia R. M. Leite
- Laboratory of Medical Investigation (LIM55)Division of UrologyUniversity of Sao Paulo Medical SchoolSao PauloBrazil
| | - Giovanni S. Marchini
- Endourology and Stone Disease SectionDivision of UrologyUniversity of Sao Paulo Medical SchoolSao PauloBrazil
| | - Ronaldo M. Guimarães
- Endourology and Stone Disease SectionDivision of UrologyUniversity of Sao Paulo Medical SchoolSao PauloBrazil
| | - Nayara I. Viana
- Laboratory of Medical Investigation (LIM55)Division of UrologyUniversity of Sao Paulo Medical SchoolSao PauloBrazil
| | - Ruan C. A. Pimenta
- Laboratory of Medical Investigation (LIM55)Division of UrologyUniversity of Sao Paulo Medical SchoolSao PauloBrazil
| | - Fabio C. Torricelli
- Endourology and Stone Disease SectionDivision of UrologyUniversity of Sao Paulo Medical SchoolSao PauloBrazil
| | - Alexandre Danilovic
- Endourology and Stone Disease SectionDivision of UrologyUniversity of Sao Paulo Medical SchoolSao PauloBrazil
| | - Fábio Carvalho Vicentini
- Endourology and Stone Disease SectionDivision of UrologyUniversity of Sao Paulo Medical SchoolSao PauloBrazil
| | - William Carlos Nahas
- Laboratory of Medical Investigation (LIM55)Division of UrologyUniversity of Sao Paulo Medical SchoolSao PauloBrazil
| | - Miguel Srougi
- Laboratory of Medical Investigation (LIM55)Division of UrologyUniversity of Sao Paulo Medical SchoolSao PauloBrazil
| | - Eduardo Mazzucchi
- Endourology and Stone Disease SectionDivision of UrologyUniversity of Sao Paulo Medical SchoolSao PauloBrazil
| |
Collapse
|
47
|
Groves JA, Gillman C, DeLay CN, Kroll TT. Identification of Novel Binding Partners for Transcription Factor Emx2. Protein J 2019; 38:2-11. [PMID: 30628007 DOI: 10.1007/s10930-019-09810-1] [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] [Indexed: 11/26/2022]
Abstract
The mammalian homolog of Drosophila empty spiracles 2 (Emx2) is a homeobox transcription factor that plays central roles in early development of the inner ear, pelvic and shoulder girdles, cerebral cortex, and urogenital organs. The role for Emx2 is best understood within the context of the development of the neocortical region of the cortex, where Emx2 is expressed in a high posterior-medial to low anterior-lateral gradient that regulates the partitioning of the neocortex into different functional fields that perform discrete computational tasks. Despite several lines of evidence demonstrating an Emx2 concentration-dependent mechanism for establishing functional areas within the developing neocortex, little is known about how Emx2 physically carries out this role. Although several binding partners for Emx2 have been identified (including Sp8, eIF4E, and Pbx1), no screens have been used to identify potential protein binding partners for this protein. We utilized a yeast two-hybrid screen using a library constructed from embryonic mouse cDNA in an attempt to identify novel binding partners for Emx2. This initial screen isolated two potential Emx2-binding partner proteins, Cnot6l and QkI-7. These novel Emx2-binding proteins are involved in multiple levels of mRNA metabolism that including splicing, mRNA export, translation, and destruction, thus making them interesting targets for further study.
Collapse
Affiliation(s)
- Jennifer A Groves
- Department of Chemistry, Central Washington University, 400 E. University Way, Ellensburg, WA, 98929-7539, USA
| | - Cody Gillman
- Division of Chemistry and Chemical Engineering, California Institute of Technology, 157 Broad Center, M/C, Pasadena, USA
| | - Cierra N DeLay
- Department of Chemistry, Central Washington University, 400 E. University Way, Ellensburg, WA, 98929-7539, USA
| | - Todd T Kroll
- Department of Chemistry, Central Washington University, 400 E. University Way, Ellensburg, WA, 98929-7539, USA.
| |
Collapse
|
48
|
Abstract
BACKGROUND Understanding the embryonic stem cell (ESC) fate decision between self-renewal and proper differentiation is important for developmental biology and regenerative medicine. Attention has focused on mechanisms involving histone modifications, alternative pre-messenger RNA splicing, and cell-cycle progression. However, their intricate interrelations and joint contributions to ESC fate decision remain unclear. RESULTS We analyze the transcriptomes and epigenomes of human ESC and five types of differentiated cells. We identify thousands of alternatively spliced exons and reveal their development and lineage-dependent characterizations. Several histone modifications show dynamic changes in alternatively spliced exons and three are strongly associated with 52.8% of alternative splicing events upon hESC differentiation. The histone modification-associated alternatively spliced genes predominantly function in G2/M phases and ATM/ATR-mediated DNA damage response pathway for cell differentiation, whereas other alternatively spliced genes are enriched in the G1 phase and pathways for self-renewal. These results imply a potential epigenetic mechanism by which some histone modifications contribute to ESC fate decision through the regulation of alternative splicing in specific pathways and cell-cycle genes. Supported by experimental validations and extended datasets from Roadmap/ENCODE projects, we exemplify this mechanism by a cell-cycle-related transcription factor, PBX1, which regulates the pluripotency regulatory network by binding to NANOG. We suggest that the isoform switch from PBX1a to PBX1b links H3K36me3 to hESC fate determination through the PSIP1/SRSF1 adaptor, which results in the exon skipping of PBX1. CONCLUSION We reveal the mechanism by which alternative splicing links histone modifications to stem cell fate decision.
Collapse
Affiliation(s)
- Yungang Xu
- Center for Computational Systems Medicine, School of Biomedical Informatics, The University of Texas Health Science Center at Houston, Houston, TX 77030 USA
- Center for Bioinformatics and Systems Biology, Wake Forest School of Medicine, Winston-Salem, NC 27157 USA
| | - Weiling Zhao
- Center for Computational Systems Medicine, School of Biomedical Informatics, The University of Texas Health Science Center at Houston, Houston, TX 77030 USA
- Center for Bioinformatics and Systems Biology, Wake Forest School of Medicine, Winston-Salem, NC 27157 USA
| | - Scott D. Olson
- Department of Pediatric Surgery, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77030 USA
| | - Karthik S. Prabhakara
- Department of Pediatric Surgery, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77030 USA
| | - Xiaobo Zhou
- Center for Computational Systems Medicine, School of Biomedical Informatics, The University of Texas Health Science Center at Houston, Houston, TX 77030 USA
- Center for Bioinformatics and Systems Biology, Wake Forest School of Medicine, Winston-Salem, NC 27157 USA
| |
Collapse
|
49
|
Lin CH, Wong SHK, Kurzer JH, Schneidawind C, Wei MC, Duque-Afonso J, Jeong J, Feng X, Cleary ML. SETDB2 Links E2A-PBX1 to Cell-Cycle Dysregulation in Acute Leukemia through CDKN2C Repression. Cell Rep 2018; 23:1166-1177. [PMID: 29694893 PMCID: PMC5963704 DOI: 10.1016/j.celrep.2018.03.124] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 02/23/2018] [Accepted: 03/27/2018] [Indexed: 11/26/2022] Open
Abstract
Acute lymphoblastic leukemia (ALL) is associated with significant morbidity and mortality, necessitating further improvements in diagnosis and therapy. Targeted therapies directed against chromatin regulators are emerging as promising approaches in preclinical studies and early clinical trials. Here, we demonstrate an oncogenic role for the protein lysine methyltransferase SETDB2 in leukemia pathogenesis. It is overexpressed in pre-BCR+ ALL and required for their maintenance in vitro and in vivo. SETDB2 expression is maintained as a direct target gene of the chimeric transcription factor E2A-PBX1 in a subset of ALL and suppresses expression of the cell-cycle inhibitor CDKN2C through histone H3K9 tri-methylation, thus establishing an oncogenic pathway subordinate to E2A-PBX1 that silences a major tumor suppressor in ALL. In contrast, SETDB2 was relatively dispensable for normal hematopoietic stem and progenitor cell proliferation. SETDB2 knockdown enhances sensitivity to kinase and chromatin inhibitors, providing a mechanistic rationale for targeting SETDB2 therapeutically in ALL.
Collapse
Affiliation(s)
- Chiou-Hong Lin
- Department of Pathology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Stephen Hon-Kit Wong
- Department of Pathology, Stanford University School of Medicine, Stanford, CA 94305, USA.
| | - Jason H Kurzer
- Department of Pathology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Corina Schneidawind
- Department of Pathology, Stanford University School of Medicine, Stanford, CA 94305, USA; Department of Hematology and Oncology, University Hospital Tuebingen, Tuebingen, Germany
| | - Michael C Wei
- Department of Pediatrics, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Jesús Duque-Afonso
- Department of Pathology, Stanford University School of Medicine, Stanford, CA 94305, USA; Department of Hematology and Oncology, University Medical Center Freiburg, Freiburg, Germany
| | - Johan Jeong
- Department of Pathology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Xuhui Feng
- Krannert Institute of Cardiology and Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Michael L Cleary
- Department of Pathology, Stanford University School of Medicine, Stanford, CA 94305, USA.
| |
Collapse
|
50
|
Losa M, Risolino M, Li B, Hart J, Quintana L, Grishina I, Yang H, Choi IF, Lewicki P, Khan S, Aho R, Feenstra J, Vincent CT, Brown AMC, Ferretti E, Williams T, Selleri L. Face morphogenesis is promoted by Pbx-dependent EMT via regulation of Snail1 during frontonasal prominence fusion. Development 2018; 145:dev157628. [PMID: 29437830 PMCID: PMC5868993 DOI: 10.1242/dev.157628] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [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: 07/29/2017] [Accepted: 01/24/2018] [Indexed: 12/17/2022]
Abstract
Human cleft lip with or without cleft palate (CL/P) is a common craniofacial abnormality caused by impaired fusion of the facial prominences. We have previously reported that, in the mouse embryo, epithelial apoptosis mediates fusion at the seam where the prominences coalesce. Here, we show that apoptosis alone is not sufficient to remove the epithelial layers. We observed morphological changes in the seam epithelia, intermingling of cells of epithelial descent into the mesenchyme and molecular signatures of epithelial-mesenchymal transition (EMT). Utilizing mouse lines with cephalic epithelium-specific Pbx loss exhibiting CL/P, we demonstrate that these cellular behaviors are Pbx dependent, as is the transcriptional regulation of the EMT driver Snail1. Furthermore, in the embryo, the majority of epithelial cells expressing high levels of Snail1 do not undergo apoptosis. Pbx1 loss- and gain-of-function in a tractable epithelial culture system revealed that Pbx1 is both necessary and sufficient for EMT induction. This study establishes that Pbx-dependent EMT programs mediate murine upper lip/primary palate morphogenesis and fusion via regulation of Snail1. Of note, the EMT signatures observed in the embryo are mirrored in the epithelial culture system.
Collapse
Affiliation(s)
- Marta Losa
- Program in Craniofacial Biology, Institute of Human Genetics, Eli and Edyth Broad Center of Regeneration Medicine & Stem Cell Research, Departments of Orofacial Sciences and Anatomy, University of California, San Francisco, 513 Parnassus Avenue, HSW 710, San Francisco, CA 94143, USA
| | - Maurizio Risolino
- Program in Craniofacial Biology, Institute of Human Genetics, Eli and Edyth Broad Center of Regeneration Medicine & Stem Cell Research, Departments of Orofacial Sciences and Anatomy, University of California, San Francisco, 513 Parnassus Avenue, HSW 710, San Francisco, CA 94143, USA
| | - Bingsi Li
- Department of Cell and Developmental Biology, Weill Cornell Medical College, 1300 York Avenue, W-512, New York, NY 10065, USA
| | - James Hart
- Department of Cell and Developmental Biology, Weill Cornell Medical College, 1300 York Avenue, W-512, New York, NY 10065, USA
| | - Laura Quintana
- Department of Cell and Developmental Biology, Weill Cornell Medical College, 1300 York Avenue, W-512, New York, NY 10065, USA
| | - Irina Grishina
- Department of Cell and Developmental Biology, Weill Cornell Medical College, 1300 York Avenue, W-512, New York, NY 10065, USA
| | - Hui Yang
- Departments of Craniofacial Biology and Cell and Developmental Biology, University of Colorado at Denver, Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Irene F Choi
- Departments of Craniofacial Biology and Cell and Developmental Biology, University of Colorado at Denver, Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Patrick Lewicki
- Department of Cell and Developmental Biology, Weill Cornell Medical College, 1300 York Avenue, W-512, New York, NY 10065, USA
| | - Sameer Khan
- Department of Cell and Developmental Biology, Weill Cornell Medical College, 1300 York Avenue, W-512, New York, NY 10065, USA
| | - Robert Aho
- Program in Craniofacial Biology, Institute of Human Genetics, Eli and Edyth Broad Center of Regeneration Medicine & Stem Cell Research, Departments of Orofacial Sciences and Anatomy, University of California, San Francisco, 513 Parnassus Avenue, HSW 710, San Francisco, CA 94143, USA
| | - Jennifer Feenstra
- Department of Cell and Developmental Biology, Weill Cornell Medical College, 1300 York Avenue, W-512, New York, NY 10065, USA
- Karolinska Institute, Department of Physiology and Pharmacology, Nanna svartz väg 2, 17177 Stockholm, Sweden
| | - C Theresa Vincent
- Karolinska Institute, Department of Physiology and Pharmacology, Nanna svartz väg 2, 17177 Stockholm, Sweden
- Department of Physiology and Biophysics, Weill Cornell Medical College, 1300 York Avenue, New York, NY 10065, USA
| | - Anthony M C Brown
- Department of Cell and Developmental Biology, Weill Cornell Medical College, 1300 York Avenue, W-512, New York, NY 10065, USA
| | - Elisabetta Ferretti
- Department of Cell and Developmental Biology, Weill Cornell Medical College, 1300 York Avenue, W-512, New York, NY 10065, USA
| | - Trevor Williams
- Departments of Craniofacial Biology and Cell and Developmental Biology, University of Colorado at Denver, Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Licia Selleri
- Program in Craniofacial Biology, Institute of Human Genetics, Eli and Edyth Broad Center of Regeneration Medicine & Stem Cell Research, Departments of Orofacial Sciences and Anatomy, University of California, San Francisco, 513 Parnassus Avenue, HSW 710, San Francisco, CA 94143, USA
- Department of Cell and Developmental Biology, Weill Cornell Medical College, 1300 York Avenue, W-512, New York, NY 10065, USA
| |
Collapse
|