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Zaidan N, Nitsche L, Diamanti E, Hannah R, Fidanza A, Wilson NK, Forrester LM, Göttgens B, Ottersbach K. Endothelial-specific Gata3 expression is required for hematopoietic stem cell generation. Stem Cell Reports 2022; 17:1788-1798. [PMID: 35905741 PMCID: PMC9391417 DOI: 10.1016/j.stemcr.2022.06.008] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 06/23/2022] [Accepted: 06/27/2022] [Indexed: 11/23/2022] Open
Abstract
To generate sufficient numbers of transplantable hematopoietic stem cells (HSCs) in vitro, a detailed understanding of how this process takes place in vivo is essential. The endothelial-to-hematopoietic transition (EHT), which culminates in the production of the first HSCs, is a highly complex process during which key regulators are switched on and off at precise moments, and that is embedded into a myriad of microenvironmental signals from surrounding cells and tissues. We have previously demonstrated an HSC-supportive function for GATA3 within the sympathetic nervous system and the sub-aortic mesenchyme, but show here that it also plays a cell-intrinsic role during the EHT. It is expressed in hemogenic endothelial cells and early HSC precursors, where its expression correlates with a more quiescent state. Importantly, endothelial-specific deletion of Gata3 shows that it is functionally required for these cells to mature into HSCs, placing GATA3 at the core of the EHT regulatory network.
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Affiliation(s)
- Nada Zaidan
- Centre for Regenerative Medicine, Institute for Regeneration and Repair, University of Edinburgh, Edinburgh EH16 4UU, UK; Department of Haematology, Wellcome Trust-Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Cambridge CB2 0AW, UK
| | - Leslie Nitsche
- Centre for Regenerative Medicine, Institute for Regeneration and Repair, University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Evangelia Diamanti
- Department of Haematology, Wellcome Trust-Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Cambridge CB2 0AW, UK
| | - Rebecca Hannah
- Department of Haematology, Wellcome Trust-Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Cambridge CB2 0AW, UK
| | - Antonella Fidanza
- Centre for Regenerative Medicine, Institute for Regeneration and Repair, University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Nicola K Wilson
- Department of Haematology, Wellcome Trust-Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Cambridge CB2 0AW, UK
| | - Lesley M Forrester
- Centre for Regenerative Medicine, Institute for Regeneration and Repair, University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Berthold Göttgens
- Department of Haematology, Wellcome Trust-Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Cambridge CB2 0AW, UK
| | - Katrin Ottersbach
- Centre for Regenerative Medicine, Institute for Regeneration and Repair, University of Edinburgh, Edinburgh EH16 4UU, UK.
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Choi JW, Joo JD, In JH, Kim D, Kim Y, Choi ST, Kim JH, Jung HS. The small molecule kobusone can stimulate islet β-cell replication in vivo. J Int Med Res 2021; 49:3000605211032849. [PMID: 34320857 PMCID: PMC8330483 DOI: 10.1177/03000605211032849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
OBJECTIVE To investigate the ability of kobusone to reduce high glucose levels and promote β-cell proliferation. METHODS Four-week-old female db/db mice were assigned to the kobusone (25 mg/kg body weight, intraperitoneally twice a day) or control group (same volume of PBS). Glucose levels and body weight were measured twice a week. After 6 weeks, intraperitoneal glucose tolerance tests and immunohistochemical studies were performed, and insulin levels were determined. The expression of mRNAs involved in cell proliferation, such as PI3K, Akt, cyclin D3 and p57Kip2, was measured by quantitative reverse transcription polymerase chain reaction (RT-qPCR). RESULTS Kobusone reduced blood glucose levels after 3 weeks and more strongly increased serum insulin levels than the vehicle. Immunohistochemistry illustrated that kobusone increased 5-bromo-2'-deoxyuridine incorporation into islet β-cells, suggesting that it can stimulate islet β-cell replication in vivo. RT-qPCR indicated that kobusone upregulated the mRNA expression of PI3K, Akt, and cyclin D3 and downregulated that of p57Kip2. CONCLUSION Our findings suggest that kobusone is a potent pancreatic islet β-cell inducer that has the potential to be developed as an anti-diabetic agent.
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Affiliation(s)
- Jin Woo Choi
- Department of Anesthesiology and Pain Medicine, St. Vincent's Hospital, The Catholic University of Korea, Suwon, Korea
| | - Jin-Deok Joo
- Department of Anesthesiology and Pain Medicine, St. Vincent's Hospital, The Catholic University of Korea, Suwon, Korea
| | - Jang Hyeok In
- Department of Anesthesiology and Pain Medicine, St. Vincent's Hospital, The Catholic University of Korea, Suwon, Korea
| | - Daewoo Kim
- Department of Anesthesiology and Pain Medicine, St. Vincent's Hospital, The Catholic University of Korea, Suwon, Korea
| | - Yongshin Kim
- Department of Anesthesiology and Pain Medicine, St. Vincent's Hospital, The Catholic University of Korea, Suwon, Korea
| | - Seung Tae Choi
- Department of Anesthesiology and Pain Medicine, St. Vincent's Hospital, The Catholic University of Korea, Suwon, Korea
| | - Jung Han Kim
- Department of Anesthesiology and Pain Medicine, St. Vincent's Hospital, The Catholic University of Korea, Suwon, Korea
| | - Hong Soo Jung
- Department of Anesthesiology and Pain Medicine, St. Vincent's Hospital, The Catholic University of Korea, Suwon, Korea
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Stampone E, Bencivenga D, Barone C, Di Finizio M, Della Ragione F, Borriello A. A Beckwith-Wiedemann-Associated CDKN1C Mutation Allows the Identification of a Novel Nuclear Localization Signal in Human p57 Kip2. Int J Mol Sci 2021; 22:ijms22147428. [PMID: 34299047 PMCID: PMC8305445 DOI: 10.3390/ijms22147428] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Revised: 07/06/2021] [Accepted: 07/07/2021] [Indexed: 11/22/2022] Open
Abstract
p57Kip2 protein is a member of the CIP/Kip family, mainly localized in the nucleus where it exerts its Cyclin/CDKs inhibitory function. In addition, the protein plays key roles in embryogenesis, differentiation, and carcinogenesis depending on its cellular localization and interactors. Mutations of CDKN1C, the gene encoding human p57Kip2, result in the development of different genetic diseases, including Beckwith–Wiedemann, IMAGe and Silver–Russell syndromes. We investigated a specific Beckwith–Wiedemann associated CDKN1C change (c.946 C>T) that results in the substitution of the C-terminal amino acid (arginine 316) with a tryptophan (R316W-p57Kip2). We found a clear redistribution of R316W-p57Kip2, in that while the wild-type p57Kip2 mostly occurs in the nucleus, the mutant form is also distributed in the cytoplasm. Transfection of two expression constructs encoding the p57Kip2 N- and C-terminal domain, respectively, allows the mapping of the nuclear localization signal(s) (NLSs) between residues 220–316. Moreover, by removing the basic RKRLR sequence at the protein C-terminus (from 312 to 316 residue), p57Kip2 was confined in the cytosol, implying that this sequence is absolutely required for nuclear entry. In conclusion, we identified an unreported p57Kip2 NLS and suggest that its absence or mutation might be of relevance in CDKN1C-associated human diseases determining significant changes of p57Kip2 localization/regulatory roles.
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Affiliation(s)
| | | | | | | | - Fulvio Della Ragione
- Correspondence: (F.D.R.); (A.B.); Tel.: +39-(081)-5665812 (F.D.R.); +39-(081)-5667554 (A.B.)
| | - Adriana Borriello
- Correspondence: (F.D.R.); (A.B.); Tel.: +39-(081)-5665812 (F.D.R.); +39-(081)-5667554 (A.B.)
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4
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Abstract
The cyclin/CDK inhibitor p57Kip2 belongs to the Cip/Kip family, with p21Cip1 and p27Kip1, and is the least studied member of the family. Unlike the other family members, p57Kip2 has a unique role during embryogenesis and is the only CDK inhibitor required for embryonic development. p57Kip2 is encoded by the imprinted gene CDKN1C, which is the gene most frequently silenced or mutated in the genetic disorder Beckwith-Wiedemann syndrome (BWS), characterized by multiple developmental anomalies. Although initially identified as a cell cycle inhibitor based on its homology to other Cip/Kip family proteins, multiple novel functions have been ascribed to p57Kip2 in recent years that participate in the control of various cellular processes, including apoptosis, migration and transcription. Here, we will review our current knowledge on p57Kip2 structure, regulation, and its diverse functions during development and homeostasis, as well as its potential implication in the development of various pathologies, including cancer.
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Affiliation(s)
- Justine Creff
- Centre National de la Recherche Scientifique, Laboratoire de Biologie Cellulaire et Moléculaire du Contrôle de la Prolifération, Centre de Biologie Intégrative, Université de Toulouse, Toulouse, France
| | - Arnaud Besson
- Centre National de la Recherche Scientifique, Laboratoire de Biologie Cellulaire et Moléculaire du Contrôle de la Prolifération, Centre de Biologie Intégrative, Université de Toulouse, Toulouse, France
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Russo GL, Stampone E, Cervellera C, Borriello A. Regulation of p27 Kip1 and p57 Kip2 Functions by Natural Polyphenols. Biomolecules 2020; 10:biom10091316. [PMID: 32933137 PMCID: PMC7564754 DOI: 10.3390/biom10091316] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 09/01/2020] [Accepted: 09/09/2020] [Indexed: 12/14/2022] Open
Abstract
In numerous instances, the fate of a single cell not only represents its peculiar outcome but also contributes to the overall status of an organism. In turn, the cell division cycle and its control strongly influence cell destiny, playing a critical role in targeting it towards a specific phenotype. Several factors participate in the control of growth, and among them, p27Kip1 and p57Kip2, two proteins modulating various transitions of the cell cycle, appear to play key functions. In this review, the major features of p27 and p57 will be described, focusing, in particular, on their recently identified roles not directly correlated with cell cycle modulation. Then, their possible roles as molecular effectors of polyphenols’ activities will be discussed. Polyphenols represent a large family of natural bioactive molecules that have been demonstrated to exhibit promising protective activities against several human diseases. Their use has also been proposed in association with classical therapies for improving their clinical effects and for diminishing their negative side activities. The importance of p27Kip1 and p57Kip2 in polyphenols’ cellular effects will be discussed with the aim of identifying novel therapeutic strategies for the treatment of important human diseases, such as cancers, characterized by an altered control of growth.
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Affiliation(s)
- Gian Luigi Russo
- National Research Council, Institute of Food Sciences, 83100 Avellino, Italy;
- Correspondence: (G.L.R.); (A.B.); Tel.: +39-0825-299-331 (G.L.R.)
| | - Emanuela Stampone
- Department of Precision Medicine, University of Campania “Luigi Vanvitelli”, 81031 Napoli, Italy;
| | - Carmen Cervellera
- National Research Council, Institute of Food Sciences, 83100 Avellino, Italy;
| | - Adriana Borriello
- Department of Precision Medicine, University of Campania “Luigi Vanvitelli”, 81031 Napoli, Italy;
- Correspondence: (G.L.R.); (A.B.); Tel.: +39-0825-299-331 (G.L.R.)
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6
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Stampone E, Bencivenga D, Barone C, Aulitto A, Verace F, Della Ragione F, Borriello A. High Dosage Lithium Treatment Induces DNA Damage and p57 Kip2 Decrease. Int J Mol Sci 2020; 21:ijms21031169. [PMID: 32050593 PMCID: PMC7038110 DOI: 10.3390/ijms21031169] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [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: 12/15/2019] [Revised: 02/06/2020] [Accepted: 02/07/2020] [Indexed: 12/22/2022] Open
Abstract
Lithium salt is the first-line therapeutic option for bipolar disorder and has been proposed as a potential antitumoral drug. The effects of LiCl treatment were investigated in SH-SY5Y, a human neuroblastoma cell line and an in vitro model of dopaminergic neuronal differentiation. LiCl, at the dosage used in psychiatric treatment, does not affect cell proliferation, while at higher doses it delays the SH-SY5Y cell division cycle and for prolonged usage reduces cell viability. Moreover, the ion treatment affects DNA integrity as demonstrated by accumulation of p53 and γH2AX (the phosphorylated form of H2AX histone), two important markers of genome damage. p57Kip2, a CIP/Kip protein, is required for proper neuronal maturation and represents a main factor of response to stress including genotoxicity. We evaluated the effect of lithium on p57Kip2 levels. Unexpectedly, we found that lithium downregulates the level of p57Kip2 in a dose-dependent manner, mainly acting at the transcriptional level. A number of different approaches, mostly based on p57Kip2 content handling, confirmed that the CKI/Kip reduction plays a key role in the DNA damage activated by lithium and suggests the unanticipated view that p57Kip2 might be involved in DNA double-strand break responses. In conclusion, our study identified novel roles for p57Kip2 in the molecular mechanism of lithium at high concentration and, more in general, in the process of DNA repair.
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Affiliation(s)
| | | | | | | | | | - Fulvio Della Ragione
- Correspondence: (A.B.); (F.D.R.); Tel.: +39-0815667554 (A.B.); +39-0815665812 (F.D.R.)
| | - Adriana Borriello
- Correspondence: (A.B.); (F.D.R.); Tel.: +39-0815667554 (A.B.); +39-0815665812 (F.D.R.)
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7
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Stampone E, Caldarelli I, Zullo A, Bencivenga D, Mancini FP, Della Ragione F, Borriello A. Genetic and Epigenetic Control of CDKN1C Expression: Importance in Cell Commitment and Differentiation, Tissue Homeostasis and Human Diseases. Int J Mol Sci 2018; 19:E1055. [PMID: 29614816 DOI: 10.3390/ijms19041055] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 03/31/2018] [Accepted: 03/31/2018] [Indexed: 12/28/2022] Open
Abstract
The CDKN1C gene encodes the p57Kip2 protein which has been identified as the third member of the CIP/Kip family, also including p27Kip1 and p21Cip1. In analogy with these proteins, p57Kip2 is able to bind tightly and inhibit cyclin/cyclin-dependent kinase complexes and, in turn, modulate cell division cycle progression. For a long time, the main function of p57Kip2 has been associated only to correct embryogenesis, since CDKN1C-ablated mice are not vital. Accordingly, it has been demonstrated that CDKN1C alterations cause three human hereditary syndromes, characterized by altered growth rate. Subsequently, the p57Kip2 role in several cell phenotypes has been clearly assessed as well as its down-regulation in human cancers. CDKN1C lies in a genetic locus, 11p15.5, characterized by a remarkable regional imprinting that results in the transcription of only the maternal allele. The control of CDKN1C transcription is also linked to additional mechanisms, including DNA methylation and specific histone methylation/acetylation. Finally, long non-coding RNAs and miRNAs appear to play important roles in controlling p57Kip2 levels. This review mostly represents an appraisal of the available data regarding the control of CDKN1C gene expression. In addition, the structure and function of p57Kip2 protein are briefly described and correlated to human physiology and diseases.
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Duquesnes N, Callot C, Jeannot P, Daburon V, Nakayama KI, Manenti S, Davy A, Besson A. p57(Kip2) knock-in mouse reveals CDK-independent contribution in the development of Beckwith-Wiedemann syndrome. J Pathol 2016; 239:250-61. [PMID: 27015986 DOI: 10.1002/path.4721] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Revised: 03/07/2016] [Accepted: 03/11/2016] [Indexed: 11/10/2022]
Abstract
CDKN1C encodes the cyclin-CDK inhibitor p57(Kip2) (p57), a negative regulator of the cell cycle and putative tumour suppressor. Genetic and epigenetic alterations causing loss of p57 function are the most frequent cause of Beckwith-Wiedemann syndrome (BWS), a genetic disorder characterized by multiple developmental anomalies and increased susceptibility to tumour development during childhood. So far, BWS development has been attributed entirely to the deregulation of proliferation caused by loss of p57-mediated CDK inhibition. However, a fraction of BWS patients have point mutations in CDKN1C located outside of the CDK inhibitory region, suggesting the involvement of other parts of the protein in the disease. To test this possibility, we generated knock-in mice deficient for p57-mediated cyclin-CDK inhibition (p57(CK) (-) ), the only clearly defined function of p57. Comparative analysis of p57(CK) (-) and p57(KO) mice provided clear evidence for CDK-independent roles of p57 and revealed that BWS is not caused entirely by CDK deregulation, as several features of BWS are caused by the loss of CDK-independent roles of p57. Thus, while the genetic origin of BWS is well understood, our results underscore that the underlying molecular mechanisms remain largely unclear. To probe these mechanisms further, we determined the p57 interactome. Several partners identified are involved in genetic disorders with features resembling those caused by CDKN1C mutation, suggesting that they could be involved in BWS pathogenesis and revealing a possible connection between seemingly distinct syndromes. Copyright © 2016 Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd.
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Affiliation(s)
- Nicolas Duquesnes
- INSERM UMR1037, Cancer Research Centre of Toulouse, France.,Université de Toulouse, France.,CNRS ERL5294, Toulouse, France
| | - Caroline Callot
- INSERM UMR1037, Cancer Research Centre of Toulouse, France.,Université de Toulouse, France.,CNRS ERL5294, Toulouse, France
| | - Pauline Jeannot
- INSERM UMR1037, Cancer Research Centre of Toulouse, France.,Université de Toulouse, France.,CNRS ERL5294, Toulouse, France
| | - Virginie Daburon
- Université de Toulouse, France.,CNRS UMR5088 LBCMCP, Toulouse, France
| | - Keiichi I Nakayama
- Division of Cell Biology, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan
| | - Stephane Manenti
- INSERM UMR1037, Cancer Research Centre of Toulouse, France.,Université de Toulouse, France.,CNRS ERL5294, Toulouse, France
| | - Alice Davy
- Université de Toulouse, France.,CNRS UMR5547, Centre de Biologie du Développement, Toulouse, France
| | - Arnaud Besson
- INSERM UMR1037, Cancer Research Centre of Toulouse, France.,Université de Toulouse, France.,CNRS ERL5294, Toulouse, France
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Yang C, Nan H, Ma J, Jiang L, Guo Q, Han L, Zhang Y, Nan K, Guo H. High Skp2/Low p57(Kip2) Expression is Associated with Poor Prognosis in Human Breast Carcinoma. Breast Cancer (Auckl) 2015; 9:13-21. [PMID: 26309408 PMCID: PMC4525793 DOI: 10.4137/bcbcr.s30101] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/04/2015] [Revised: 07/12/2015] [Accepted: 07/14/2015] [Indexed: 01/20/2023]
Abstract
Downregulation of p57Kip2 is involved in tumor progression, and S-phase kinase-associated protein 2 (Skp2) is an E3 ligase that regulates a variety of cell cycle proteins. However, the prognostic value of p57Kip2 and its correlation with Skp2 in breast cancer have not been fully elucidated. Here we report our study on the expression of p57Kip2 and Skp2 in 102 breast cancer patients by immunohistochemistry, and analysis of clinicopathologic parameters in relation to patient prognosis. The expression of p57Kip2 was negatively associated with Skp2 expression in breast cancer (r = −0.26, P = 0.009). Kaplan–Meier analysis indicated that both high Skp2 and low p57Kip2 correlated with poor disease-free survival (DFS) (P = 0.05), and a group with the combination of high Skp2/low p57Kip2 demonstrated even worse DFS (log-rank = 21.118, P < 0.001). In addition, univariate analysis showed that Skp2, p57Kip2, histological grade, lymph node metastasis, and estrogen and progesterone receptors (ER and PR) were all associated with DFS, and multivariate analysis revealed that lymph node metastasis and Skp2 were independent prognostic biomarkers. The correlation between p57 and Skp2 was further demonstrated in multiple breast cancer cell lines and cell cycle phases. Half-life and immunoprecipitation (IP) experiments indicated that Skp2 directly interacts with p57Kip2 and promotes its degradation, rather than its mutant p57Kip2 (T310A). Overall, our findings demonstrate that Skp2 directly degrades p57Kip2, and an inverse correlation between these proteins (high skp2/low p57Kip2) is associated with poor prognosis in breast cancer. Thus, our results indicate a combined prognostic value of these markers in breast cancer diagnosis and treatment.
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Affiliation(s)
- Chengcheng Yang
- Department of Oncology, First Affiliated Hospital, School of Medicine, Xi'an Jiaotong University, Xi'an, Shannxi, P. R. China
| | - Haocheng Nan
- Department of Oncology, First Affiliated Hospital, School of Medicine, Xi'an Jiaotong University, Xi'an, Shannxi, P. R. China
| | - Jiequn Ma
- Department of Oncology, First Affiliated Hospital, School of Medicine, Xi'an Jiaotong University, Xi'an, Shannxi, P. R. China
| | - Lili Jiang
- Department of Oncology, First Affiliated Hospital, School of Medicine, Xi'an Jiaotong University, Xi'an, Shannxi, P. R. China
| | - Qianqian Guo
- Department of Oncology, First Affiliated Hospital, School of Medicine, Xi'an Jiaotong University, Xi'an, Shannxi, P. R. China
| | - Lili Han
- Department of Oncology, First Affiliated Hospital, School of Medicine, Xi'an Jiaotong University, Xi'an, Shannxi, P. R. China
| | - Yamin Zhang
- Department of Oncology, First Affiliated Hospital, School of Medicine, Xi'an Jiaotong University, Xi'an, Shannxi, P. R. China
| | - Kejun Nan
- Department of Oncology, First Affiliated Hospital, School of Medicine, Xi'an Jiaotong University, Xi'an, Shannxi, P. R. China
| | - Hui Guo
- Department of Oncology, First Affiliated Hospital, School of Medicine, Xi'an Jiaotong University, Xi'an, Shannxi, P. R. China
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10
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Maj M, Schneider G, Ratajczak J, Suszynska M, Kucia M, Ratajczak MZ. The cell cycle- and insulin-signaling-inhibiting miRNA expression pattern of very small embryonic-like stem cells contributes to their quiescent state. Exp Biol Med (Maywood) 2015; 240:1107-11. [PMID: 25966979 DOI: 10.1177/1535370215584940] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Accepted: 03/23/2015] [Indexed: 11/15/2022] Open
Abstract
Murine Oct4(+), very small embryonic-like stem cells (VSELs), are a quiescent stem cell population that requires a supportive co-culture layer to proliferate and/or to differentiate in vitro. Gene expression studies have revealed that the quiescence of these cells is due to changes in expression of parentally imprinted genes, including genes involved in cell cycle regulation and insulin and insulin-like growth factor signaling (IIS). To investigate the role of microRNAs (miRNAs) in VSEL quiescence, we performed miRNA studies in highly purified VSELs and observed a unique miRNA expression pattern in these cells. Specifically, we observed significant differences in the expression of certain miRNA species (relative to a reference cell population), including (i) miRNA-25_1 and miRNA-19 b, whose downregulation has the effect of upregulating cell cycle checkpoint genes and (ii) miRNA-675-3 p and miRNA-675-5 p, miRNA-292-5 p, miRNA-184, and miRNA-125 b, whose upregulation attenuates IIS. These observations are important for understanding the biology of these cells and for developing efficient ex vivo expansion strategies for VSELs isolated from adult tissues.
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Affiliation(s)
- Magdalena Maj
- Stem Cell Institute, James Graham Brown Cancer Center, University of Louisville, Louisville, KY 40202, USA
| | - Gabriela Schneider
- Stem Cell Institute, James Graham Brown Cancer Center, University of Louisville, Louisville, KY 40202, USA
| | - Janina Ratajczak
- Stem Cell Institute, James Graham Brown Cancer Center, University of Louisville, Louisville, KY 40202, USA
| | - Malwina Suszynska
- Stem Cell Institute, James Graham Brown Cancer Center, University of Louisville, Louisville, KY 40202, USA
| | - Magda Kucia
- Stem Cell Institute, James Graham Brown Cancer Center, University of Louisville, Louisville, KY 40202, USA Department of Regenerative Medicine, Warsaw Medical University, Warsaw 02-091, Poland
| | - Mariusz Z Ratajczak
- Stem Cell Institute, James Graham Brown Cancer Center, University of Louisville, Louisville, KY 40202, USA Department of Regenerative Medicine, Warsaw Medical University, Warsaw 02-091, Poland
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Li Y, Wang D, Zhang H, Wang C, Dai W, Cheng Z, Wang G, Li F. P21-Activated Kinase 4 Regulates the Cyclin-Dependent Kinase Inhibitor P57Kip2in Human Breast Cancer. Anat Rec (Hoboken) 2013; 296:1561-7. [DOI: 10.1002/ar.22754] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Revised: 05/14/2013] [Accepted: 05/23/2013] [Indexed: 12/12/2022]
Affiliation(s)
- Yanshu Li
- Department of Cell Biology; Key Laboratory of Cell Biology; Ministry of Public Health; and Key Laboratory of Medical Cell Biology; Ministry of Education; China Medical University; Shenyang 110001 China
| | - Di Wang
- Department of Cell Biology; Key Laboratory of Cell Biology; Ministry of Public Health; and Key Laboratory of Medical Cell Biology; Ministry of Education; China Medical University; Shenyang 110001 China
| | - Hongyan Zhang
- Department of Cell Biology; Key Laboratory of Cell Biology; Ministry of Public Health; and Key Laboratory of Medical Cell Biology; Ministry of Education; China Medical University; Shenyang 110001 China
| | - Chunyu Wang
- Department of Cell Biology; Key Laboratory of Cell Biology; Ministry of Public Health; and Key Laboratory of Medical Cell Biology; Ministry of Education; China Medical University; Shenyang 110001 China
| | - Wei Dai
- Department of Cell Biology; Key Laboratory of Cell Biology; Ministry of Public Health; and Key Laboratory of Medical Cell Biology; Ministry of Education; China Medical University; Shenyang 110001 China
| | - Zhenguo Cheng
- Department of Cell Biology; Key Laboratory of Cell Biology; Ministry of Public Health; and Key Laboratory of Medical Cell Biology; Ministry of Education; China Medical University; Shenyang 110001 China
| | - Guanqiao Wang
- Department of Cell Biology; Key Laboratory of Cell Biology; Ministry of Public Health; and Key Laboratory of Medical Cell Biology; Ministry of Education; China Medical University; Shenyang 110001 China
| | - Feng Li
- Department of Cell Biology; Key Laboratory of Cell Biology; Ministry of Public Health; and Key Laboratory of Medical Cell Biology; Ministry of Education; China Medical University; Shenyang 110001 China
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12
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Affiliation(s)
- Hui-Wen Lo
- Division of Surgical Sciences, Department of Surgery, Duke Cancer Institute, Duke University School of Medicine, Durham, NC, USA.
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13
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Affiliation(s)
- Leonardo Salmena
- Ontario Cancer Institute, University Health Network and Department of Medical Biophysics, University of Toronto, Toronto, ON Canada
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