1
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Qin S, Gao K, Tian Z. Comprehensive characterization of differential glycation in hepatocellular carcinoma using tissue proteomics with stable isotopic labeling. Anal Bioanal Chem 2024; 416:4531-4541. [PMID: 38922433 DOI: 10.1007/s00216-024-05392-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Revised: 05/17/2024] [Accepted: 06/06/2024] [Indexed: 06/27/2024]
Abstract
Glycation is a non-enzymatic posttranslational modification coming from the reaction between reducing sugars and free amino groups in proteins, where early glycation products (fructosyl-lysine, FL) and advanced glycation end products (AGEs) are formed. The occurrence of glycation and accumulation of AGEs have been closely associated with hepatocellular carcinoma (HCC). Here, we reported the characterization of differential glycation in HCC using tissue proteomics with stable isotopic labeling; early glycation-modified peptides were enriched with boronate affinity chromatography (BAC), and AGEs-modified peptides were fractionated with basic reversed-phase separation. By this integrated approach, 3717 and 1137 early and advanced glycated peptides corresponding to 4007 sites on 1484 proteins were identified with a false discovery rate (FDR) of no more than 1%. One hundred fifty-five sites were modified with both early and advanced end glycation products. Five early and 7 advanced glycated peptides were quantified to be differentially expressed in HCC tissues relative to paired adjacent tissues. Most (8 out of 10) of the proteins corresponding to the differential glycated peptides have previously been reported with dysregulation in HCC. The results together may deepen our knowledge of glycation as well as provide insights for therapeutics.
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Affiliation(s)
- Shanshan Qin
- School of Chemical Science & Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University, Shanghai, 200092, China
| | - Ke Gao
- Department of Liver Surgery and Transplantation, and Key Laboratory of Carcinogenesis and Cancer Invasion (Ministry of Education), Liver Cancer Institute, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Zhixin Tian
- School of Chemical Science & Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University, Shanghai, 200092, China.
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2
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Ovsiannikova NL, Lavrushkina SV, Ivanova AV, Mazina LM, Zhironkina OA, Kireev II. Lamin A as a Determinant of Mechanical Properties of the Cell Nucleus in Health and Disease. BIOCHEMISTRY. BIOKHIMIIA 2021; 86:1288-1300. [PMID: 34903160 DOI: 10.1134/s0006297921100102] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 07/31/2021] [Accepted: 08/02/2021] [Indexed: 06/14/2023]
Abstract
One of the main factors associated with worse prognosis in oncology is metastasis, which is based on the ability of tumor cells to migrate from the primary source and to form secondary tumors. The search for new strategies to control migration of metastatic cells is one of the urgent issues in biomedicine. One of the strategies to stop spread of cancer cells could be regulation of the nuclear elasticity. Nucleus, as the biggest and stiffest cellular compartment, determines mechanical properties of the cell as a whole, and, hence, could prevent cell migration through the three-dimensional extracellular matrix. Nuclear rigidity is maintained by the nuclear lamina, two-dimensional network of intermediate filaments in the inner nuclear membrane (INM). Here we present the most significant factors defining nucleus rigidity, discuss the role of nuclear envelope composition in the cell migration, as well consider possible approaches to control lamina composition in order to change plasticity of the cell nucleus and ability of the tumor cells to metastasize.
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Affiliation(s)
- Natalia L Ovsiannikova
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, 119992, Russia.
- Faculty of Bioengineering and Bioinformatics, Lomonosov Moscow State University, Moscow, 119234, Russia
| | - Svetlana V Lavrushkina
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, 119992, Russia
- Faculty of Bioengineering and Bioinformatics, Lomonosov Moscow State University, Moscow, 119234, Russia
| | - Anastasia V Ivanova
- Faculty of Biology, Lomonosov Moscow State University, Moscow, 119234, Russia
| | - Ludmila M Mazina
- Faculty of Biology, Lomonosov Moscow State University, Moscow, 119234, Russia
| | - Oxana A Zhironkina
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, 119992, Russia
| | - Igor I Kireev
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, 119992, Russia
- Faculty of Biology, Lomonosov Moscow State University, Moscow, 119234, Russia
- Kulakov National Medical Research Center for Obstetrics, Gynecology, and Perinatology, Moscow, 117198, Russia
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3
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Dong CH, Jiang T, Yin H, Song H, Zhang Y, Geng H, Shi PC, Xu YX, Gao H, Liu LY, Zhou L, Zhang ZH, Song J. LMNB2 promotes the progression of colorectal cancer by silencing p21 expression. Cell Death Dis 2021; 12:331. [PMID: 33782407 PMCID: PMC8007612 DOI: 10.1038/s41419-021-03602-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Revised: 02/22/2021] [Accepted: 03/01/2021] [Indexed: 02/07/2023]
Abstract
Colorectal cancer is the second common cause of death worldwide. Lamin B2 (LMNB2) is involved in chromatin remodeling and the rupture and reorganization of nuclear membrane during mitosis, which is necessary for eukaryotic cell proliferation. However, the role of LMNB2 in colorectal cancer (CRC) is poorly understood. This study explored the biological functions of LMNB2 in the progression of colorectal cancer and explored the possible molecular mechanisms. We found that LMNB2 was significantly upregulated in primary colorectal cancer tissues and cell lines, compared with paired non-cancerous tissues and normal colorectal epithelium. The high expression of LMNB2 in colorectal cancer tissues is significantly related to the clinicopathological characteristics of the patients and the shorter overall and disease-free cumulative survival. Functional analysis, including CCK8 cell proliferation test, EdU proliferation test, colony formation analysis, nude mouse xenograft, cell cycle, and apoptosis analysis showed that LMNB2 significantly promotes cell proliferation by promoting cell cycle progression in vivo and in vitro. In addition, gene set enrichment analysis, luciferase report analysis, and CHIP analysis showed that LMNB2 promotes cell proliferation by regulating the p21 promoter, whereas LMNB2 has no effect on cell apoptosis. In summary, these findings not only indicate that LMNB2 promotes the proliferation of colorectal cancer by regulating p21-mediated cell cycle progression, but also suggest the potential value of LMNB2 as a clinical prognostic marker and molecular therapy target.
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Affiliation(s)
- Chen-Hua Dong
- Department of General Surgery, The Affiliated Hospital of Xuzhou Medical University, Jiangsu, 221002, Xuzhou, China
- The Graduate School, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Tao Jiang
- Department of General Surgery, The Affiliated Hospital of Xuzhou Medical University, Jiangsu, 221002, Xuzhou, China
- Institute of Digestive Diseases, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Hang Yin
- Department of General Surgery, The Affiliated Hospital of Xuzhou Medical University, Jiangsu, 221002, Xuzhou, China
- The Graduate School, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Hu Song
- Department of General Surgery, The Affiliated Hospital of Xuzhou Medical University, Jiangsu, 221002, Xuzhou, China
- Institute of Digestive Diseases, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Yi Zhang
- Department of General Surgery, The Affiliated Hospital of Xuzhou Medical University, Jiangsu, 221002, Xuzhou, China
- Institute of Digestive Diseases, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Hao Geng
- Department of General Surgery, The Affiliated Hospital of Xuzhou Medical University, Jiangsu, 221002, Xuzhou, China
- The Graduate School, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Pei-Cong Shi
- Department of General Surgery, The Affiliated Hospital of Xuzhou Medical University, Jiangsu, 221002, Xuzhou, China
- Institute of Digestive Diseases, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Yi-Xin Xu
- Department of General Surgery, The Affiliated Hospital of Xuzhou Medical University, Jiangsu, 221002, Xuzhou, China
- Institute of Digestive Diseases, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Hong Gao
- Department of General Surgery, The Affiliated Hospital of Xuzhou Medical University, Jiangsu, 221002, Xuzhou, China
- Institute of Digestive Diseases, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Lian-Yu Liu
- Department of General Surgery, The Affiliated Hospital of Xuzhou Medical University, Jiangsu, 221002, Xuzhou, China
- The Graduate School, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Lei Zhou
- Department of General Surgery, The Affiliated Hospital of Xuzhou Medical University, Jiangsu, 221002, Xuzhou, China
- The Graduate School, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Zhao-Hui Zhang
- General Surgery, 97th Hospital of Chinese People's Liberation Army, Xuzhou, 221004, China.
| | - Jun Song
- Department of General Surgery, The Affiliated Hospital of Xuzhou Medical University, Jiangsu, 221002, Xuzhou, China.
- The Graduate School, Xuzhou Medical University, Xuzhou, Jiangsu, China.
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4
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Liu H, Li D, Zhou L, Kan S, He G, Zhou K, Wang L, Chen M, Shu W. LMNA functions as an oncogene in hepatocellular carcinoma by regulating the proliferation and migration ability. J Cell Mol Med 2020; 24:12008-12019. [PMID: 32896989 PMCID: PMC7578910 DOI: 10.1111/jcmm.15829] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 07/21/2020] [Accepted: 08/17/2020] [Indexed: 12/13/2022] Open
Abstract
The role of the LMNA gene in the development and progression of hepatocellular carcinoma (HCC) and the associated molecular mechanism is not yet clear. Therefore, the purpose of this study was to evaluate the relationship between LMNA and HCC. LMNA gene expression in normal tissues and corresponding tumours was evaluated and the Kaplan-Meier survival analysis was performed. Next, the LMNA gene was knocked out in the 293T and HepG2 cell lines using the CRISPR/Cas9 technique. Subsequently, the proliferation, migration and colony formation rate of the two LMNA knockout cell lines were analysed. Finally, the molecular mechanism affecting the tumorigenesis due to the loss of the LMNA gene was evaluated. The results showed that the LMNA gene was abnormally expressed in many tumours, and the survival rate of the HCC patients with a high expression of the LMNA gene was significantly reduced compared with the rate in patients with a low LMNA expression. The knockout of the LMNA gene in the HCC cell line HepG2 resulted in a decreased tumorigenicity, up-regulation of the P16 expression and down-regulation of the CDK1 expression. These findings suggested that LMNA might function as an oncogene in HCC and provided a potential new target for the diagnosis and treatment of HCC.
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Affiliation(s)
- Heng Liu
- College of Biotechnology, Guilin Medical University, Guilin, China.,College of Stomatology, Guangxi Medical University, Nanning, China
| | - Dongming Li
- Department of Cell Biology and Genetics, Guangxi Medical University, Nanning, China
| | - Ling Zhou
- Department of Cell Biology and Genetics, Guangxi Medical University, Nanning, China
| | - Shuang Kan
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, Guilin, China
| | - Guozhang He
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, Guilin, China
| | - Kun Zhou
- Department of General Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - Liping Wang
- College of Biotechnology, Guilin Medical University, Guilin, China
| | - Ming Chen
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, Guilin, China
| | - Wei Shu
- College of Biotechnology, Guilin Medical University, Guilin, China
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Abstract
In the present study, we investigated the role of miR-122 in hepatocarcinoma progression and explored the mechanism. In hepatocarcinoma tissues and cells, we used qRT-PCR to validate the miR-122 expression level. Next, we used colony formation by crystal violet staining assay to compare cell proliferation ability, and we used scratch test or Transwell assay to compare cell migration or invasion ability. We then conducted bioinformatics or luciferase reporter gene assay to prove the regulation effect of miR-122 on lamin B2 (LMNB2), and the biological function of LMNB2 was analyzed. We used nude mouse tumorigenicity assay to test the inhibition effect of miR-122 ASO therapy against hepatocarcinoma. miR-122 was reduced in hepatocarcinoma tissues compared to the paracarcinoma tissues, which was relatively low or high in hepatocarcinoma cell line SMMC7721 or Hep3B, and overexpressed miR-122 inhibited proliferation, migration, and invasion in hepatocarcinoma cells. Additionally, some reports showed that LMNB2 was regulated by miR-122, which inhibited the expression of LMNB2. Moreover, LMNB2 functioned to promote cell proliferation, migration, and invasion. We could achieve the inhibition of hepatocarcinoma using miR-122 therapy through decreasing LMNB2 expression in vivo. Our data indicated that miR-122 could inhibit hepatocellular carcinoma cell progression by targeting LMNB2 and as a therapeutic target for hepatocarcinoma treatment.
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Affiliation(s)
- Xiao-Na Li
- *The Department of General Surgery, Tongde Hospital of Zhejiang Province, Zhejiang Province, P.R. China
| | - Hong Yang
- †The Department of Medical Oncology, The First Hospital of Shijiazhuang, Shijiazhuang, Hebei Province, P.R. China
| | - Tao Yang
- ‡The Department of Hepatological Surgery, Tongde Hospital of Zhejiang Province, Zhejiang Province, P.R. China
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Abdelghany AM, Rezk NS, Osman MM, Hamid AI, Al-Breedy AM, Abdelsattar HA. Using Lamin B1 mRNA for the early diagnosis of hepatocellular carcinoma: a cross-sectional diagnostic accuracy study. F1000Res 2018; 7:1339. [PMID: 30467522 PMCID: PMC6208568 DOI: 10.12688/f1000research.14795.1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/26/2018] [Indexed: 01/30/2023] Open
Abstract
Background: Hepatocellular carcinoma (HCC) is vital medical issue in Egypt. It accounts for 70.48% of all liver tumors among Egyptians. The aim of this study was to determine the diagnostic role of plasma levels of mRNA of lamin B1 by RT-qPCR as an early marker of HCC. Methods: This study was conducted at the Clinical Pathology Department in collaboration with the Department of Tropical Medicine and Infectious Diseases at Ain Shams University Hospitals. It included 30 patients with primary HCC and viral cirrhosis (all were hepatitis C virus-positive) (Group I), in addition to 10 patients with chronic liver diseases (Group II) and 10 healthy age- and sex-matched subjects (Group III). Group I was further classified according to the Barcelona-Clinic Liver Cancer Staging System. Serum α-fetoprotein (AFP) chemiluminescent-immunoassays and RT-qPCR analysis of plasma lamin B1 mRNA levels were performed for all participants. Results: AFP and lamin B1 significantly elevated in patients with HCC compared to those in the other studied groups. AFP and lamin B1 status could discriminate group I from group II and III. A significant increase was found among the three Barcelona stages with regards to AFP and lamin B1 levels. A significant decrease was found between group II and stage 0, A and B with regards to AFP and lamin B1. Lamin B1 and AFP could both differentiate HCC patients with one tumor nodule (T1) from those with two or more tumor nodules (T2&Tm), as well as between those with tumor sizes >3 cm and ≤3 cm. Conclusion: Measurement of lamin B1 mRNA is recommended in patients with chronic liver disease with normal serum AFP, especially in known cirrhotic patients that deteriorate rapidly without any apparent etiology.
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Affiliation(s)
- Amani M. Abdelghany
- Department of Clinical Pathology, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Nasser Sadek Rezk
- Department of Clinical Pathology, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Mona Mostafa Osman
- Department of Clinical Pathology, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Amira I. Hamid
- Department of Clinical Pathology, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Ashraf Mohammad Al-Breedy
- Department of Tropical Medicine and Infectious Diseases, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Hoda A. Abdelsattar
- Department of Clinical Pathology, Faculty of Medicine, Ain Shams University, Cairo, Egypt
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7
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Ma Y, Fei L, Zhang M, Zhang W, Liu X, Wang C, Luo Y, Zhang H, Han Y. Lamin B2 binding to minichromosome maintenance complex component 7 promotes non-small cell lung carcinogenesis. Oncotarget 2017; 8:104813-104830. [PMID: 29285216 PMCID: PMC5739603 DOI: 10.18632/oncotarget.20338] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Accepted: 07/17/2017] [Indexed: 12/13/2022] Open
Abstract
We investigated the role of lamin B2 in non-small cell lung cancer (NSCLC). We detected higher lamin B2 expression in 20 NSCLC tumor tissues obtained from The Cancer Genome Atlas than in adjacent normal lung tissues. LMNB2-RNAi knockdown in A549 and H1299 NSCLC cells inhibited colony formation, cell proliferation and G1-S cell cycle progression while increasing apoptosis. LMNB2 overexpression had the opposite effects. Tumor xenograft experiments showed diminished tumor growth with LMNB2 knockdown H1299 cells than with controls. Yeast two-hybrid studies revealed minichromosome maintenance complex component 7 (MCM7) to be a binding partner of lamin B2, which was confirmed by co-immunoprecipitation and co-localization studies. Lamin B2 binding enhanced DNA binding and helicase activities of MCM7. Deletion analysis with MCM7-N, MCM7-M or MCM7-C mutant proteins showed that lamin B2 binds to the C-terminus of MCM7, and competes with the binding of the tumor suppressor retinoblastoma (RB) protein. Immunohistochemical analysis of 150 NSCLC patient samples revealed that both lamin B2 and MCM7 levels positively correlated with histological grade and tumor TNM stage. Moreover, high lamin B2 and MCM7 levels correlated with shorter overall survival of NSCLC patients. In sum, these results show that lamin B2 interaction with MCM7 promotes NSCLC progression.
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Affiliation(s)
- Yinan Ma
- Departments of Pathology, School of Basic Medical Sciences, China Medical University, Liaoning, China
| | - Liangru Fei
- Departments of Pathology, School of Basic Medical Sciences, China Medical University, Liaoning, China
| | - Meiyu Zhang
- Departments of Pathology, School of Basic Medical Sciences, China Medical University, Liaoning, China
| | - Wenzhu Zhang
- Departments of Pathology, School of Basic Medical Sciences, China Medical University, Liaoning, China
| | - Xiaofang Liu
- Department of Pathology, The First Affiliated Hospital of China Medical University, Liaoning, China
| | - Congcong Wang
- Department of Pathology, The First Affiliated Hospital of China Medical University, Liaoning, China
| | - Yuan Luo
- Departments of Pathology, School of Basic Medical Sciences, China Medical University, Liaoning, China
| | - Haiyan Zhang
- Department of Pathology, The First People's Hospital of Jining, Shandong, China
| | - Yuchen Han
- Departments of Pathology, School of Basic Medical Sciences, China Medical University, Liaoning, China.,Department of Pathology, The First Affiliated Hospital of China Medical University, Liaoning, China.,Department of Pathology, Shanghai Chest Hospital, Shanghai, China
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Sakthivel KM, Sehgal P. A Novel Role of Lamins from Genetic Disease to Cancer Biomarkers. Oncol Rev 2016; 10:309. [PMID: 27994771 PMCID: PMC5136755 DOI: 10.4081/oncol.2016.309] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2016] [Revised: 11/03/2016] [Accepted: 11/04/2016] [Indexed: 12/22/2022] Open
Abstract
Lamins are the key components of the nuclear lamina and by virtue of their interactions with chromatin and binding partners act as regulators of cell proliferation and differentiation. Of late, the diverse roles of lamins in cellular processes have made them the topic of intense debate for their role in cancer progression. The observations about aberrant localization or misexpression of the nuclear lamins in cancerous tissues have often led to the speculative role of lamins as a cancer risk biomarker. Here we discuss the involvement of lamins in several cancer subtypes and their potential role in predicting the tumor progression.
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Affiliation(s)
| | - Poonam Sehgal
- Chemical and Biomolecular Engineering, University of Illinois , Urbana-Champaign, IL, USA
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Abstract
For over two decades, B-type lamins were thought to have roles in fundamental processes including correct assembly of nuclear envelopes, DNA replication, transcription and cell survival. Recent studies have questioned these roles and have instead emphasised the role of these proteins in tissue building and tissue integrity, particularly in tissues devoid of A-type lamins. Other studies have suggested that the expression of B-type lamins in somatic cells influences the rate of entry into states of cellular senescence. In humans duplication of the LMNB1 gene (encoding lamin B1) causes an adult onset neurodegenerative disorder, termed autosomal dominant leukodystrophy, whilst very recently, LMNB1 has been implicated as a susceptibility gene in neural tube defects. This is consistent with studies in mice that reveal a critical role for B-type lamins in neuronal migration and brain development. In this review, I will consider how different model systems have contributed to our understanding of the functions of B-type lamins and which of those functions are critical for human health and disease.
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Affiliation(s)
- C J Hutchison
- School of Biological and Biomedical Sciences, Durham University, Durham DH1 3LE, United Kingdom.
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10
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Wazir U, Ahmed MH, Bridger JM, Harvey A, Jiang WG, Sharma AK, Mokbel K. The clinicopathological significance of lamin A/C, lamin B1 and lamin B receptor mRNA expression in human breast cancer. Cell Mol Biol Lett 2013; 18:595-611. [PMID: 24293108 PMCID: PMC6275779 DOI: 10.2478/s11658-013-0109-9] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2013] [Accepted: 11/25/2013] [Indexed: 12/26/2022] Open
Abstract
Lamin A/C (LMNA), lamin B1 (LMNB1) and lamin B receptor (LBR) have key roles in nuclear structural integrity and chromosomal stability. In this study, we have studied the relationships between the mRNA expressions of A-type lamins, LMNB1 and LBR and the clinicopathological parameters in human breast cancer. Samples of breast cancer tissues (n = 115) and associated non-cancerous tissue (ANCT; n = 30) were assessed using reverse transcription and quantitative PCR. Transcript levels were correlated with clinicopathological data. Higher levels of A-type lamins and LMNB1 mRNA expression were seen in ANCT. Higher lamin A/C expression was associated with the early clinical stage (TNM1 vs. TNM3 - 13 vs. 0.21; p = 0.0515), with better clinical outcomes (disease-free survival vs. mortality - 11 vs. 1; p = 0.0326), and with better overall (p = 0.004) and disease-free survival (p = 0.062). The expression of LMNB1 declined with worsening clinical outcome (disease-free vs. mortalities - 0.0011 vs. 0.000; p = 0.0177). LBR mRNA expression was directly associated with tumor grade (grade 1 vs. grade 3 - 0.00 vs. 0.00; p = 0.0479) and Nottingham Prognostic Index (NPI1 vs. NPI3 - 0.00 vs. 0.00; p = 0.0551). To the best of our knowledge, this is the first study to suggest such a role for A-type lamins, lamin B1 and LBR in human breast cancer, identifying an important area for further research.
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Affiliation(s)
- Umar Wazir
- The London Breast Institute, Princess Grace Hospital, London, UK
- Department of Breast Surgery, St. George’s Hospital and Medical School, University of London, London, UK
| | - Mai Hassan Ahmed
- Centre for Cell & Chromosome Biology, Uxbridge, London, UK
- Brunel Institute for Cancer Genetics and Pharmacogenomics, School of Health Sciences and Social Care, Brunel University, Uxbridge, London, UK
| | | | - Amanda Harvey
- Brunel Institute for Cancer Genetics and Pharmacogenomics, School of Health Sciences and Social Care, Brunel University, Uxbridge, London, UK
| | - Wen G. Jiang
- Metastasis and Angiogenesis Research Group, University Department of Surgery, Cardiff University School of Medicine, Cardiff University, Cardiff, Wales, UK
| | - Anup K. Sharma
- The London Breast Institute, Princess Grace Hospital, London, UK
| | - Kefah Mokbel
- London Breast Institute, the Princess Grace Hospital, 45 Nottingham Place, London, W1U 5NY UK
- The London Breast Institute, Princess Grace Hospital, London, UK
- Department of Breast Surgery, St. George’s Hospital and Medical School, University of London, London, UK
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