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Uryu H, Mishima Y, Ishihara Y, Shirouchi Y, Yamauchi N, Hirano M, Hirano K, Teramoto Y, Yoshida K, Maruyama D. Complex karyotype determined using conventional cytogenetic analysis is a poor prognostic factor in patients with multiple myeloma. J Clin Exp Hematop 2024; 64:10-20. [PMID: 38538316 PMCID: PMC11079984 DOI: 10.3960/jslrt.23047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 12/06/2023] [Accepted: 12/12/2023] [Indexed: 05/12/2024] Open
Abstract
High-risk cytogenetic abnormalities (HRCAs) influence the prognosis of multiple myeloma (MM). However, additional cytogenetic aberrations can lead to poor outcomes. This study aimed to clarify whether HRCAs and additional chromosomal abnormalities affect MM prognosis. Patients with newly diagnosed MM who were treated with novel agents were retrospectively evaluated. The primary objective was to assess the difference in progression-free survival (PFS) and overall survival (OS) between patients with/without HRCAs and between patients with/without complex karyotype (CK). The secondary objectives were to identify factors affecting PFS/OS and factors related to CK. HRCAs were defined as del(17p), t(4;14), t(14;16), and gain/amplification(1q) assessed using fluorescence in situ hybridization. CK was defined as ≥3 chromosomal abnormalities on G-banding. Among 110 patients, 40 had HRCAs and 15 had CK. In this study, survival durations between patients with/without HRCAs were similar, while the CK group had significantly poorer PFS/OS than the no-CK group (median PFS: 9 vs. 24 months and median OS: 29 vs. 97 months, respectively), and a poor prognostic impact of CK was maintained in patients with HRCAs. In multivariate analysis, CK was correlated with poor PFS/OS (hazard ratio [HR]: 2.39, 95% confidence interval [95% CI]: 1.22-4.66 and HR: 2.66, 95% CI: 1.10-6.45, respectively). Bone marrow plasma cell (BMPC) ≥60% (odds ratio [OR] = 6.40, 95% CI: 1.50-27.2) and Revised International Staging System III (OR = 7.53, 95% CI: 2.09-27.1) were associated with CK. Our study suggests that CK may contribute to the poor prognosis of MM. Aggressive disease status including high BMPC proliferation could be relevant to CK.
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Affiliation(s)
- Hideki Uryu
- Department of Hematology
Oncology, Cancer Institute Hospital, Japanese Foundation for
Cancer Research, Tokyo, Japan
| | - Yuko Mishima
- Department of Hematology
Oncology, Cancer Institute Hospital, Japanese Foundation for
Cancer Research, Tokyo, Japan
| | - Yuko Ishihara
- Department of Hematology
Oncology, Cancer Institute Hospital, Japanese Foundation for
Cancer Research, Tokyo, Japan
| | - Yuko Shirouchi
- Department of Hematology
Oncology, Cancer Institute Hospital, Japanese Foundation for
Cancer Research, Tokyo, Japan
| | - Nobuhiko Yamauchi
- Department of Hematology
Oncology, Cancer Institute Hospital, Japanese Foundation for
Cancer Research, Tokyo, Japan
| | - Mitsuhito Hirano
- Department of Hematology
Oncology, Cancer Institute Hospital, Japanese Foundation for
Cancer Research, Tokyo, Japan
| | - Kei Hirano
- Department of Hematology
Oncology, Cancer Institute Hospital, Japanese Foundation for
Cancer Research, Tokyo, Japan
| | - Yukako Teramoto
- Department of Hematology
Oncology, Cancer Institute Hospital, Japanese Foundation for
Cancer Research, Tokyo, Japan
| | - Kikuaki Yoshida
- Department of Hematology
Oncology, Cancer Institute Hospital, Japanese Foundation for
Cancer Research, Tokyo, Japan
| | - Dai Maruyama
- Department of Hematology
Oncology, Cancer Institute Hospital, Japanese Foundation for
Cancer Research, Tokyo, Japan
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2
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Ankathil R, Foong E, Siti-Mariam I, Norhidayah R, Nazihah MY, Sangeetha V, Hariharan S, Azlan H. Hyperdiploid Multiple Myeloma with Novel Complex Structural Chromosome Abnormalities Associated with Poor Prognosis : A Rare Case Report. Int J Hematol Oncol Stem Cell Res 2021; 15:199-205. [PMID: 35083001 PMCID: PMC8748240 DOI: 10.18502/ijhoscr.v15i3.6852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Accepted: 05/11/2020] [Indexed: 12/24/2022] Open
Abstract
Hyperdiploid multiple myeloma (MM) is associated with better prognosis and non-hyperdiploid subtype is associated with variable to adverse prognosis based on the nature of karyotype abnormality. Rarely exceptions to this hyperdiploid and non-hyperdiploid divisions do exist in a minority. We report an adult male MM patient who showed hyperdiploid karyotype with few novel complex abnormalities and who showed poor clinical outcome. Conventional cytogenetic analysis carried out in 22 GTG banded metaphases showed 53,Y,der(X)t(X;22)(q27;q11.2),+3,+5,+6,+9,+11,+15,der(17)ins(17;1;3)(q11.2;?;?),der(17)ins(17;1;3)(q11.2;?;?),+19,-22,+mar karyotype pattern in 15 metaphases whereas 7 metaphases showed 46,XY karyotype pattern. Interphase FISH revealed biallelic del(13q14) and del(17p13) but no translocations involving the 14q32 region. Through Spectral karyotyping FISH, the origin of complex abnormalities involving der(17) chromosome, translocation t(X;22), and marker chromosome could be clearly delineated. Although the present case showed hyperdiploid karyotype, he showed an adverse prognosis probably due to the co-existence of high risk and complex abnormalities and expired 5 months after initial diagnosis despite standard treatment given.
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Affiliation(s)
- Ravindran Ankathil
- Human Genome Centre, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian, Kelantan, Malaysia
| | - Eva Foong
- Human Genome Centre, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian, Kelantan, Malaysia
| | - Ismail Siti-Mariam
- Human Genome Centre, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian, Kelantan, Malaysia
| | - Ramli Norhidayah
- Human Genome Centre, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian, Kelantan, Malaysia
| | - Mohd Yunus Nazihah
- Human Genome Centre, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian, Kelantan, Malaysia
| | - Vijay Sangeetha
- Regional Cancer Centre, Medical College, Thiruvananthapuram, Kerala, India
| | | | - Husin Azlan
- Department of Internal Medicine and Clinical Hematology, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
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Hao S, Lu X, Gong Z, Bassett RL, Hu S, Konoplev SN, Tang G, Li S, Xu J, Khanlari M, Lee HC, Manasanch EE, Weber DM, Orlowski RZ, Medeiros LJ, Lin P. The survival impact of CKS1B gains or amplification is dependent on the background karyotype and TP53 deletion status in patients with myeloma. Mod Pathol 2021; 34:327-335. [PMID: 32908255 DOI: 10.1038/s41379-020-00669-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 08/18/2020] [Accepted: 08/19/2020] [Indexed: 11/09/2022]
Abstract
Gains or amplification (amp) of chromosome 1q21/CKS1B are reported to be a high-risk factor in myeloma. In this retrospective study, we analyzed the impact of CKS1B gain/amp on overall survival in the context of other genetic aberrations, such as TP53 deletion, FGFR3-IGH, IGH-MAF, MYEOV/CCND1-IGH, and RB1, as well as karyotype. The cohort included 132 myeloma patients with CKS1B gain/amp detected by fluorescence in-situ hybridization. There were 72 men and 60 women with a median age of 65 years (range 39-88 years). A normal, simple, or complex karyotype was observed in 39.5%, 5.4%, and 55% of patients, respectively. "Double hit," defined as CKS1B gain/amp coexisting with TP53 deletion, or "triple hit," defined as double hit plus t(4;14)FGFR3-IGH or t(14;16)IGH-MAF, were identified in 25 patients (18.9%) and five patients (3.8%), respectively. Double and triple hit were highly associated with a complex karyotype (p = 0.02). Ninety-nine patients (99/128, 77.3%) received stem cell transplantation. The median follow-up time was 48.2 months (range 2-104 months); 68 patients (51.5%) died, with a median overall survival of 58.8 months. Multivariate analysis (Cox model) showed that double hit with TP53 deletion (p = 0.0031), triple hit (p = 0.01), and complex karyotype (p = 0.0009) were each independently associated with poorer overall survival. Stem cell transplantation was associated with better overall survival, mainly in patients with a double or triple hit and complex karyotype (p = 0.003). These findings indicate that the inferior outcome of myeloma patients with CKS1B gain/amp is attributable to the high number of high-risk patients in this group. The prognostic impact of CKS1B gain/amp depends on the background karyotype and TP53 status.
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Affiliation(s)
- Suyang Hao
- Department of Pathology and Genomic Medicine, The Houston Methodist Hospital, Houston, TX, USA
| | - Xinyan Lu
- Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Zimu Gong
- Department of Internal Medicine, AMITA Health Saint Joseph Hospital, Chicago, IL, USA
| | - Roland L Bassett
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Shimin Hu
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Sergej N Konoplev
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Guilin Tang
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Shaoying Li
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Jie Xu
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Mahsa Khanlari
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Hans C Lee
- Department of Lymphoma and Myeloma, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Elisabet E Manasanch
- Department of Lymphoma and Myeloma, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Donna M Weber
- Department of Lymphoma and Myeloma, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Robert Z Orlowski
- Department of Lymphoma and Myeloma, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - L Jeffrey Medeiros
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Pei Lin
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
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Bolli N, Genuardi E, Ziccheddu B, Martello M, Oliva S, Terragna C. Next-Generation Sequencing for Clinical Management of Multiple Myeloma: Ready for Prime Time? Front Oncol 2020; 10:189. [PMID: 32181154 PMCID: PMC7057289 DOI: 10.3389/fonc.2020.00189] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2019] [Accepted: 02/04/2020] [Indexed: 12/22/2022] Open
Abstract
Personalized treatment is an attractive strategy that promises increased efficacy with reduced side effects in cancer. The feasibility of such an approach has been greatly boosted by next-generation sequencing (NGS) techniques, which can return detailed information on the genome and on the transcriptome of each patient's tumor, thus highlighting biomarkers of response or druggable targets that may differ from case to case. However, while the number of cancers sequenced is growing exponentially, much fewer cases are amenable to a molecularly-guided treatment outside of clinical trials to date. In multiple myeloma, genomic analysis shows a variety of gene mutations, aneuploidies, segmental copy-number changes, translocations that are extremely heterogeneous, and more numerous than other hematological malignancies. Currently, in routine clinical practice we employ reduced FISH panels that only capture three high-risk features as part of the R-ISS. On the contrary, recent advances have suggested that extending genomic analysis to the full spectrum of recurrent mutations and structural abnormalities in multiple myeloma may have biological and clinical implications. Furthermore, increased efficacy of novel treatments can now produce deeper responses, and standard methods do not have enough sensitivity to stratify patients in complete biochemical remission. Consequently, NGS techniques have been developed to monitor the size of the clone to a sensitivity of up to a cell in a million after treatment. However, even these techniques are not within reach of standard laboratories. In this review we will recapitulate recent advances in multiple myeloma genomics, with special focus on the ones that may have immediate translational impact. We will analyze the benefits and pitfalls of NGS-based diagnostics, highlighting crucial aspects that will need to be taken into account before this can be implemented in most laboratories. We will make the point that a new era in myeloma diagnostics and minimal residual disease monitoring is close and conventional genetic testing will not be able to return the required information. This will mandate that even in routine practice NGS should soon be adopted owing to a higher informative potential with increasing clinical benefits.
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Affiliation(s)
- Niccolo Bolli
- Department of Clinical Oncology and Hematology, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy.,Department of Oncology and Onco-Hematology, University of Milan, Milan, Italy
| | - Elisa Genuardi
- Department of Molecular Biotechnologies and Health Sciences, University of Turin, Turin, Italy
| | - Bachisio Ziccheddu
- Department of Clinical Oncology and Hematology, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy.,Department of Molecular Biotechnologies and Health Sciences, University of Turin, Turin, Italy
| | - Marina Martello
- Seràgnoli Institute of Hematology, Bologna University School of Medicine, Bologna, Italy
| | - Stefania Oliva
- Department of Molecular Biotechnologies and Health Sciences, University of Turin, Turin, Italy
| | - Carolina Terragna
- Seràgnoli Institute of Hematology, Azienda Ospedaliero-Universitaria Sant'Orsola-Malpighi, Bologna, Italy
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5
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Yang N, Mun YC, Seong CM, Huh HJ, Huh J. Clinicopathological Characteristics of Hyperdiploidy with High-Risk Cytogenetics in Multiple Myeloma. Ann Lab Med 2018; 38:160-164. [PMID: 29214761 PMCID: PMC5736676 DOI: 10.3343/alm.2018.38.2.160] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Revised: 06/25/2017] [Accepted: 10/25/2017] [Indexed: 01/06/2023] Open
Abstract
In multiple myeloma (MM), hyperdiploidy (HD) is known to impart longer overall survival. However, it is unclear whether coexistent HD ameliorates the adverse effects of known high-risk cytogenetics in MM patients. To address this issue, we investigated the clinicopathological characteristics of HD with high-risk cytogenetics in MM. Ninety-seven patients with MM were included in the study. For metaphase cytogenetics (MC), unstimulated cells from bone marrow aspirates were cultured for either 24 or 48 hours. To detect HD by interphase fluorescence in situ hybridization (iFISH), we assessed trisomies of chromosomes 5, 7, 9, 11, 15, and 17. Of the 97 MM patients, 40 showed HD. The frequency of co-occurrence of HD and high-risk cytogenetics was 14% (14/97). When the clinicopathological characteristics were compared between the two groups of HD with high-risk cytogenetics vs. non-HD (NHD) with high-risk cytogenetics, the level of beta 2 microglobulin and stage distribution significantly differed (P=0.020, P=0.032, respectively). This study shows that some of the clinicopathological characteristics of MM patients with high-risk cytogenetics differ according to HD or NHD status.
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Affiliation(s)
- Naery Yang
- Department of Laboratory Medicine, College of Medicine, Ewha Womans University, Seoul, Korea
| | - Yeung Chul Mun
- Department of Internal Medicine, College of Medicine, Ewha Womans University, Seoul, Korea
| | - Chu Myong Seong
- Department of Internal Medicine, College of Medicine, Ewha Womans University, Seoul, Korea
| | - Hee Jin Huh
- Department of Laboratory Medicine, Dongguk University, Ilsan Medical Center, Goyang, Korea.
| | - Jungwon Huh
- Department of Laboratory Medicine, College of Medicine, Ewha Womans University, Seoul, Korea.
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6
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Saxe D, Seo EJ, Bergeron MB, Han JY. Recent advances in cytogenetic characterization of multiple myeloma. Int J Lab Hematol 2018; 41:5-14. [PMID: 29971938 DOI: 10.1111/ijlh.12882] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2018] [Accepted: 06/08/2018] [Indexed: 12/21/2022]
Abstract
The detection of cytogenetic abnormalities in multiple myeloma (MM) has received more importance over last years for risk stratification and the new risk-adapted treatment strategies. Conventional G-banding analysis should be included in a routine procedure for the initial diagnostic workup for patients suspected of MM. However, the detection of chromosomal abnormalities in MM by conventional cytogenetics is limited owing to the low proliferative activity of malignant plasma cells as well as the low number of plasma cells in bone marrow specimens. Fluorescence in situ hybridization (FISH) or microarray-based technologies can overcome some of those drawbacks and detect specific target arrangements as well as chromosomal copy number changes. In this review, we will discuss different cytogenetic approaches and compare their strength and weakness to provide genetic information for risk stratification and prediction of outcome in MM patients.
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Affiliation(s)
- Debra Saxe
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, Georgia
| | - Eul-Ju Seo
- Department of Laboratory Medicine, College of Medicine and Asan Medical Center, University of Ulsan, Seoul, Korea
| | - Melanie Beaulieu Bergeron
- Department of Pathology and Laboratory Medicine, University of Ottawa, Ottawa, ON, Canada.,Department of Genetics, Children's Hospital of Eastern Ontario, Ottawa, ON, Canada
| | - Jin-Yeong Han
- Department of Laboratory Medicine, Dong-A University College of Medicine, Busan, Korea
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Tisato V, Voltan R, Gonelli A, Secchiero P, Zauli G. MDM2/X inhibitors under clinical evaluation: perspectives for the management of hematological malignancies and pediatric cancer. J Hematol Oncol 2017; 10:133. [PMID: 28673313 PMCID: PMC5496368 DOI: 10.1186/s13045-017-0500-5] [Citation(s) in RCA: 184] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Accepted: 06/20/2017] [Indexed: 02/07/2023] Open
Abstract
The two murine double minute (MDM) family members MDM2 and MDMX are at the center of an intense clinical assessment as molecular target for the management of cancer. Indeed, the two proteins act as regulators of P53, a well-known key controller of the cell cycle regulation and cell proliferation that, when altered, plays a direct role on cancer development and progression. Several evidence demonstrated that functional aberrations of P53 in tumors are in most cases the consequence of alterations on the MDM2 and MDMX regulatory proteins, in particular in patients with hematological malignancies where TP53 shows a relatively low frequency of mutation while MDM2 and MDMX are frequently found amplified/overexpressed. The pharmacological targeting of these two P53-regulators in order to restore or increase P53 expression and activity represents therefore a strategy for cancer therapy. From the discovery of the Nutlins in 2004, several compounds have been developed and reported with the ability of targeting the P53-MDM2/X axis by inhibiting MDM2 and/or MDMX. From natural compounds up to small molecules and stapled peptides, these MDM2/X pharmacological inhibitors have been extensively studied, revealing different biological features and different rate of efficacy when tested in in vitro and in vivo experimental tumor models. The data/evidence coming from the preclinical experimentation have allowed the identification of the most promising molecules and the setting of clinical studies for their evaluation as monotherapy or in therapeutic combination with conventional chemotherapy or with innovative therapeutic protocols in different tumor settings. Preliminary results have been recently published reporting data about safety, tolerability, potential side effects, and efficacy of such therapeutic approaches. In this light, the aim of this review is to give an updated overview about the state of the art of the clinical evaluation of MDM2/X inhibitor compounds with a special attention to hematological malignancies and to the potential for the management of pediatric cancers.
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Affiliation(s)
- Veronica Tisato
- Department of Morphology, Surgery and Experimental Medicine and LTTA Centre, University of Ferrara, Via Fossato di Mortara 66, 44121, Ferrara, Italy.
| | - Rebecca Voltan
- Department of Morphology, Surgery and Experimental Medicine and LTTA Centre, University of Ferrara, Via Fossato di Mortara 66, 44121, Ferrara, Italy
| | - Arianna Gonelli
- Department of Morphology, Surgery and Experimental Medicine and LTTA Centre, University of Ferrara, Via Fossato di Mortara 66, 44121, Ferrara, Italy
| | - Paola Secchiero
- Department of Morphology, Surgery and Experimental Medicine and LTTA Centre, University of Ferrara, Via Fossato di Mortara 66, 44121, Ferrara, Italy
| | - Giorgio Zauli
- Department of Morphology, Surgery and Experimental Medicine and LTTA Centre, University of Ferrara, Via Fossato di Mortara 66, 44121, Ferrara, Italy
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SPP1, analyzed by bioinformatics methods, promotes the metastasis in colorectal cancer by activating EMT pathway. Biomed Pharmacother 2017; 91:1167-1177. [PMID: 28531945 DOI: 10.1016/j.biopha.2017.05.056] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 04/26/2017] [Accepted: 05/10/2017] [Indexed: 12/30/2022] Open
Abstract
OBJECTIVE Tumor metastasis is still a great challenge for the prognosis of colorectal cancer (CRC). Although secreted phosphoprotein 1 (SPP1) over-expression is confirmed to associate with invasion, metastasis of CRC, the underlying mechanism by which modulates the CRC metastasis is still not fully explained. METHOD GDS4382 was obtained from GEO database and differentially expressed genes (DEGs) were analyzed by bioinformatics methods 55 paired samples of CRC and adjacent non-cancerous tissues were collected to detect the expression of SPP1 by q-PCR and western blot. Functional analysis of siRNA-SPP1, including proliferation, apoptosis, colony formation, cell cycle, migration, was investigated in CRC cell lines and tumor xenografts were conducted in nude mice. Protein expression of E-cadherin and vimentin was detected by western blot. RESULTS 1887 DEGs were analyzed and selected from GDS4382, of which, SPP1 and epithelial-mesenchymal-transition (EMT) showed a close association by bioinformatics analysis. The mRNA and protein expression of SPP1 were significantly higher in CRC tissues than that in adjacent non-cancerous tissues (P<0.05). Overexpression of SPP1 closely associated with tumor invasion, metastasis and low survival in CRC. Moreover, siRNA-SPP1 repressed proliferation, cell cycle, colony formation, migration and tumor growth in vivo and promoted cell apoptosis in CRC cell lines. In addition, Protein expression of E-cadherin was obviously up-regulated and Vimentin was down-regulated in CRC cells after siRNA-SPP1 (P<0.05). CONCLUSION SPP1 expression was significantly up-regulated in CRC. And SPP1 promoted the metastasis of CRC by activating EMT, which could be a potentially therapeutic target for patients with CRC.
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