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Maynard S, Hall A, Galanos P, Rizza S, Yamamoto T, Gram H, Munk SHN, Shoaib M, Sørensen CS, Bohr V, Lerdrup M, Maya-Mendoza A, Bartek J. Lamin A/C impairments cause mitochondrial dysfunction by attenuating PGC1α and the NAMPT-NAD+ pathway. Nucleic Acids Res 2022; 50:9948-9965. [PMID: 36099415 PMCID: PMC9508839 DOI: 10.1093/nar/gkac741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 07/30/2022] [Accepted: 08/30/2022] [Indexed: 11/14/2022] Open
Abstract
Mutations in the lamin A/C gene (LMNA) cause laminopathies such as the premature aging Hutchinson Gilford progeria syndrome (HGPS) and altered lamin A/C levels are found in diverse malignancies. The underlying lamin-associated mechanisms remain poorly understood. Here we report that lamin A/C-null mouse embryo fibroblasts (Lmna-/- MEFs) and human progerin-expressing HGPS fibroblasts both display reduced NAD+ levels, unstable mitochondrial DNA and attenuated bioenergetics. This mitochondrial dysfunction is associated with reduced chromatin recruitment (Lmna-/- MEFs) or low levels (HGPS) of PGC1α, the key transcription factor for mitochondrial homeostasis. Lmna-/- MEFs showed reduced expression of the NAD+-biosynthesis enzyme NAMPT and attenuated activity of the NAD+-dependent deacetylase SIRT1. We find high PARylation in lamin A/C-aberrant cells, further decreasing the NAD+ pool and consistent with impaired DNA base excision repair in both cell models, a condition that fuels DNA damage-induced PARylation under oxidative stress. Further, ATAC-sequencing revealed a substantially altered chromatin landscape in Lmna-/- MEFs, including aberrantly reduced accessibility at the Nampt gene promoter. Thus, we identified a new role of lamin A/C as a key modulator of mitochondrial function through impairments of PGC1α and the NAMPT-NAD+ pathway, with broader implications for the aging process.
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Affiliation(s)
- Scott Maynard
- Danish Cancer Society Research Center, DK-2100 Copenhagen, Denmark
| | - Arnaldur Hall
- Danish Cancer Society Research Center, DK-2100 Copenhagen, Denmark
| | | | - Salvatore Rizza
- Danish Cancer Society Research Center, DK-2100 Copenhagen, Denmark
| | - Tatsuro Yamamoto
- Danish Cancer Society Research Center, DK-2100 Copenhagen, Denmark
| | | | | | - Muhammad Shoaib
- Biotech Research and Innovation Centre (BRIC), University of Copenhagen, DK-2200 Copenhagen, Denmark
| | - Claus Storgaard Sørensen
- Biotech Research and Innovation Centre (BRIC), University of Copenhagen, DK-2200 Copenhagen, Denmark
| | - Vilhelm A Bohr
- Department of Cellular and Molecular Medicine, Center for Healthy Aging, University of Copenhagen, DK-2200 Copenhagen, Denmark
- Laboratory of Molecular Gerontology, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA
| | - Mads Lerdrup
- The DNRF Center for Chromosome Stability, Department of Cellular and Molecular Medicine, University of Copenhagen, DK-2200 Copenhagen, Denmark
| | | | - Jiri Bartek
- Danish Cancer Society Research Center, DK-2100 Copenhagen, Denmark
- Division of Genome Biology, Department of Medical Biochemistry and Biophysics, Science for Life Laboratory, Karolinska Institute, SE-17177 Stockholm, Sweden
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Lamin-A/C Is Modulated by the Involvement of Histamine-Mediated Calcium/Calmodulin-Dependent Kinase II in Lung Cancer Cells. Int J Mol Sci 2022; 23:ijms23169075. [PMID: 36012358 PMCID: PMC9409298 DOI: 10.3390/ijms23169075] [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: 07/23/2022] [Revised: 08/09/2022] [Accepted: 08/11/2022] [Indexed: 12/03/2022] Open
Abstract
Lamins are nuclear envelope proteins involved in various cellular functions, such as DNA modulation, cellular differentiation, and development. In this study, we investigate the role of histamine in lung cancer biology. Since it is known that lamin-A/C is negatively regulated in lung cancer, we hypothesize that histamine signaling is related to nuclear lamin-A/C regulation and cancer progression. Our findings reveal that histamine stimulation enhances lamin-A/C expression in lung cancer cells. Lamin-A/C expression is dependent on histamine-mediated intracellular calcium signaling and subsequent calcium/calmodulin-dependent kinase II (Ca/CaMKII) activation. The nuclear protein nestin, which stabilizes lamin-A/C expression, is also modulated by Ca/CaMKII. However, histamine-mediated lamin-A/C expression is independent of Akt/focal adhesion kinase or autophagy signaling. Histamine stimulation attenuates lung cancer motility in the presence of enhanced lamin-A/C expression. In conclusion, we propose a regulatory mechanism that accounts for the modulation of lamin-A/C levels through the involvement of Ca/CaMKII in cancer cells and provides molecular evidence of histamine signaling in lamin-A/C biology.
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Wu G, Tian Q, Liu J, Zhou Q, Zou D, Chen Z, Wu T, Wang W, Xia H, Zhou J. Comprehensive analysis of expression and prognosis for LMNB family genes in human sarcoma. Medicine (Baltimore) 2022; 101:e28933. [PMID: 35356902 PMCID: PMC10513290 DOI: 10.1097/md.0000000000028933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 02/08/2022] [Indexed: 11/26/2022] Open
Abstract
ABSTRACT Previous studies indicated that lamin proteins were thought to be related to gene expression, chromatin structure, and unclear stability. There are 2 types of vertebrate lamins, including A and B. The 2 B type proteins are encoded by lamin B1 (LMNB1) and lamin B2 (LMNB2). The LMNBs factor has been found to be associated with the development of multiple tumors, but its association with sarcoma has been barely mentioned.The transcription levels of LMNBs were analyzed via Oncomine database. Gene Expression Profiling Interactive Analysis (GEPIA) dataset was adopted to analyze the differential expression of LMNBs in sarcoma. Cancer Cell Line Encyclopedia dataset was used to explore the expression of LMNBs in sarcoma cell line. We analyzed the prognostic value of LMNBs in GEPIA and Kaplan-Meier Plotter. Oncomine and GEPIA datasets were also used to detect the relationship between LMNBs and their co-expressed genes. We used the Database for Annotation, Visualization and Integrated Discovery to conduct the Gene Ontology analysis of LMNBs and their co-expressed genes. Kyoto Encyclopedia of Genes and Genomes was also used to analyze the pathway of LMNBs.LMNB1 and LMNB2 were reported to be hyperexpressed in sarcoma. The expression of LMNBs was elevated in various sarcoma cell lines. According to the results, we observed that LMNBs were connected to the poor overall survival, recurrence-free survival, and disease-free survival of sarcoma patients.This study indicated that hyperexpression of LMNBs was significantly related to worse outcome of sarcoma, LMNB1 and LMNB2 were expected to become potential biomarkers for human.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Hong Xia
- * Correspondence: Hong Xia, Department of Orthopedics, Xiangtan Central Hospital, Xiangtan, Hunan 411100, China (e-mail: ); Jian Zhou,Department of Orthopedics, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, China (e-mail: ).
| | - Jian Zhou
- * Correspondence: Hong Xia, Department of Orthopedics, Xiangtan Central Hospital, Xiangtan, Hunan 411100, China (e-mail: ); Jian Zhou,Department of Orthopedics, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, China (e-mail: ).
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Xu B, Liu F, Gao Y, Sun J, Li Y, Lin Y, Liu X, Wen Y, Yi S, Dang J, Tu P, Wang Y. High Expression of IKZF2 in Malignant T Cells Promotes Disease Progression in Cutaneous T Cell Lymphoma. Acta Derm Venereol 2021; 101:adv00613. [PMID: 34853863 PMCID: PMC9472098 DOI: 10.2340/actadv.v101.570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Cutaneous T cell lymphoma is a generally indolent disease derived from skin-homing mature T cells. However, in advanced stages, cutaneous T cell lymphoma may manifest aggressive clinical behaviour and lead to a poor prognosis. The mechanism of disease progression in cutaneous T cell lymphoma remains unknown. This study, based on a large clinical cohort, found that IKZF2, an essential transcription factor during T cell development and differentiation, showed stage-dependent overexpression in the malignant T cells in mycosis fungoides lesions. IKZF2 is specifically over-expressed in advanced-stage mycosis fungoides lesions, and correlates with poor prognosis. Mechanistically, overexpression of IKZF2 promotes cutaneous T cell lymphoma progression via inhibiting malignant cell apoptosis and may contribute to tumour immune escape by downregulating major histocompatibility complex II molecules and up-regulating the production of anti-inflammatory cytokine interleukin-10 by malignant T cells. These results demonstrate the important role of IKZF2 in high-risk cutaneous T cell lymphoma and pave the way for future targeted therapy.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | - Yang Wang
- Department of Dermatology and Venereology, Peking University First Hospital, No.8 Xishiku Street, Xi Cheng District, Beijing 100034, China.
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Graziano S, Coll-Bonfill N, Teodoro-Castro B, Kuppa S, Jackson J, Shashkova E, Mahajan U, Vindigni A, Antony E, Gonzalo S. Lamin A/C recruits ssDNA protective proteins RPA and RAD51 to stalled replication forks to maintain fork stability. J Biol Chem 2021; 297:101301. [PMID: 34648766 PMCID: PMC8571089 DOI: 10.1016/j.jbc.2021.101301] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 09/15/2021] [Accepted: 10/08/2021] [Indexed: 12/11/2022] Open
Abstract
Lamin A/C provides a nuclear scaffold for compartmentalization of genome function that is important for genome integrity. Lamin A/C dysfunction is associated with cancer, aging, and degenerative diseases. The mechanisms whereby lamin A/C regulates genome stability remain poorly understood. We demonstrate a crucial role for lamin A/C in DNA replication. Lamin A/C binds to nascent DNA, especially during replication stress (RS), ensuring the recruitment of replication fork protective factors RPA and RAD51. These ssDNA-binding proteins, considered the first and second responders to RS respectively, function in the stabilization, remodeling, and repair of the stalled fork to ensure proper restart and genome stability. Reduced recruitment of RPA and RAD51 upon lamin A/C depletion elicits replication fork instability (RFI) characterized by MRE11 nuclease–mediated degradation of nascent DNA, RS-induced DNA damage, and sensitivity to replication inhibitors. Importantly, unlike homologous recombination–deficient cells, RFI in lamin A/C-depleted cells is not linked to replication fork reversal. Thus, the point of entry of nucleases is not the reversed fork but regions of ssDNA generated during RS that are not protected by RPA and RAD51. Consistently, RFI in lamin A/C-depleted cells is rescued by exogenous overexpression of RPA or RAD51. These data unveil involvement of structural nuclear proteins in the protection of ssDNA from nucleases during RS by promoting recruitment of RPA and RAD51 to stalled forks. Supporting this model, we show physical interaction between RPA and lamin A/C. We suggest that RS is a major source of genomic instability in laminopathies and lamin A/C-deficient tumors.
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Affiliation(s)
- Simona Graziano
- Edward A. Doisy Department of Biochemistry and Molecular Biology, St Louis University School of Medicine, St Louis, Missouri, USA
| | - Nuria Coll-Bonfill
- Edward A. Doisy Department of Biochemistry and Molecular Biology, St Louis University School of Medicine, St Louis, Missouri, USA
| | - Barbara Teodoro-Castro
- Edward A. Doisy Department of Biochemistry and Molecular Biology, St Louis University School of Medicine, St Louis, Missouri, USA
| | - Sahiti Kuppa
- Edward A. Doisy Department of Biochemistry and Molecular Biology, St Louis University School of Medicine, St Louis, Missouri, USA
| | - Jessica Jackson
- Edward A. Doisy Department of Biochemistry and Molecular Biology, St Louis University School of Medicine, St Louis, Missouri, USA
| | - Elena Shashkova
- Edward A. Doisy Department of Biochemistry and Molecular Biology, St Louis University School of Medicine, St Louis, Missouri, USA
| | - Urvashi Mahajan
- Edward A. Doisy Department of Biochemistry and Molecular Biology, St Louis University School of Medicine, St Louis, Missouri, USA
| | - Alessandro Vindigni
- Edward A. Doisy Department of Biochemistry and Molecular Biology, St Louis University School of Medicine, St Louis, Missouri, USA
| | - Edwin Antony
- Edward A. Doisy Department of Biochemistry and Molecular Biology, St Louis University School of Medicine, St Louis, Missouri, USA
| | - Susana Gonzalo
- Edward A. Doisy Department of Biochemistry and Molecular Biology, St Louis University School of Medicine, St Louis, Missouri, USA.
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Novel clinical features and pleiotropic effect in three unrelated patients with LMNA variant. Clin Dysmorphol 2021; 30:10-16. [PMID: 33038109 DOI: 10.1097/mcd.0000000000000355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
LMNA gene encodes A-type lamins and the encoded proteins join the structure of the nuclear lamina and affect the processes of nuclear homeostasis, DNA replication, repair, transcription, and apoptosis. LMNA variants cause a heterogeneous group of diseases known as laminopathies. Phenotypes associated with LMNA variants mainly affect the heart, skeleton, skin, bones, and nervous system. The affected tissues may vary depending on the site of the variant on the gene and the variation type. Complex phenotypes may also occur in some cases, in which findings of premature aging, cardiomyopathy, mandibuloacral dysplasia, lipodystrophy, renal involvement, metabolic involvement, and myopathy coexist. The pleiotropic effect of LMNA variants can result in heterogeneous phenotypes. In this study, we aimed to describe atypical phenotypic characteristics in a patient with familial partial lipodystrophy type 2 associated with LMNA variant, another with mandibuloacral dysplasia, and a third patient with a complex phenotype as well as discuss them in the context of their relationship with the genotype.
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Reduced Lamin A/C Does Not Facilitate Cancer Cell Transendothelial Migration but Compromises Lung Metastasis. Cancers (Basel) 2021; 13:cancers13102383. [PMID: 34069191 PMCID: PMC8157058 DOI: 10.3390/cancers13102383] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Accepted: 05/12/2021] [Indexed: 02/06/2023] Open
Abstract
The mechanisms by which the nuclear lamina of tumor cells influences tumor growth and migration are highly disputed. Lamin A and its variant lamin C are key lamina proteins that control nucleus stiffness and chromatin conformation. Downregulation of lamin A/C in two prototypic metastatic lines, B16F10 melanoma and E0771 breast carcinoma, facilitated cell squeezing through rigid pores, and reduced heterochromatin content. Surprisingly, both lamin A/C knockdown cells grew poorly in 3D spheroids within soft agar, and lamin A/C deficient cells derived from spheroids transcribed lower levels of the growth regulator Yap1. Unexpectedly, the transendothelial migration of both cancer cells in vitro and in vivo, through lung capillaries, was not elevated by lamin A/C knockdown and their metastasis in lungs was even dramatically reduced. Our results are the first indication that reduced lamin A/C content in distinct types of highly metastatic cancer cells does not elevate their transendothelial migration (TEM) capacity and diapedesis through lung vessels but can compromise lung metastasis at a post extravasation level.
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Altered apoptotic protein expressions characterize the survival of Bcr-Abl-independent drug-resistant chronic myeloid leukemia cell line. JOURNAL OF BASIC AND CLINICAL HEALTH SCIENCES 2021. [DOI: 10.30621/jbachs.848797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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9
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Zhang WJ. Effect of P2X purinergic receptors in tumor progression and as a potential target for anti-tumor therapy. Purinergic Signal 2021; 17:151-162. [PMID: 33420658 PMCID: PMC7954979 DOI: 10.1007/s11302-020-09761-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Accepted: 12/10/2020] [Indexed: 02/06/2023] Open
Abstract
The development of tumors is a complex pathological process involving multiple factors, multiple steps, and multiple genes. Their prevention and treatment have always been a difficult problem at present. A large number of studies have proved that the tumor microenvironment plays an important role in the progression of tumors. The tumor microenvironment is the place where tumor cells depend for survival, and it plays an important role in regulating the growth, proliferation, apoptosis, migration, and invasion of tumor cells. P2X purinergic receptors, which depend on the ATP ion channel, can be activated by ATP in the tumor microenvironment, and by mediating tumor cells and related cells (such as immune cells) in the tumor microenvironment. They play an important regulatory role on the effects of the skeleton, membrane fluidity, and intracellular molecular metabolism of tumor cells. Therefore, here, we outlined the biological characteristics of P2X purinergic receptors, described the effect of tumor microenvironment on tumor progression, and discussed the effect of ATP on tumor. Moreover, we explored the role of P2X purinergic receptors in the development of tumors and anti-tumor therapy. These data indicate that P2X purinergic receptors may be used as another potential pharmacological target for tumor prevention and treatment.
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Affiliation(s)
- Wen-Jun Zhang
- Gastrointestinal Surgery, The Second Affiliated Hospital, Nanchang University, Nanchang, 343000, Jiangxi, China.
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10
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Shallie PD, Naicker T. Differential upregulations of SMAC and LAMIN B levels in the buffy coat of HIV associated preeclamptic women. J Matern Fetal Neonatal Med 2021; 35:5080-5086. [PMID: 33478301 DOI: 10.1080/14767058.2021.1875210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
OBJECTIVE To assess HIV positivity as an apoptotic confounding variable in pregnancies complicated by preeclampsia. METHODS AND MATERIALS Using a Bio-plex Multiplex Immunoassay, Smac and Lamin B concentrations (ng/ml) were analyzed in a buffy coat collected from 128 pregnant women attending a large regional hospital in Durban, South Africa. Study groups consisted of Normotensive and Preeclamptic pregnant women stratified according to their HIV status. All HIV positive groups received highly active antiretroviral therapy (HAART). RESULTS Our findings showed significant (p < .05) upregulation in the levels of both SMAC and LAMIN B in the HIV positive patients and a concomitant downregulation of the same apoptotic makers were observed in preeclampsia regardless of HIV status. CONCLUSIONS These results could be associated with the fact that apoptosis promotes deregulation of mitochondrial dynamics, contributing to the associated severe obstetric events observed in pregnancies among HIV-infected women on HAART.
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Affiliation(s)
- Philemon D Shallie
- Optics and Imaging Centre, Nelson R. Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa.,Anatomy, College of Medicine, Olabisi Onabanjo University, Sagamu, Nigeria
| | - Thajasvarie Naicker
- Optics and Imaging Centre, College of Health Sciences, Doris Duke Medical Research Institute, Nelson R. Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa
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11
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Dubik N, Mai S. Lamin A/C: Function in Normal and Tumor Cells. Cancers (Basel) 2020; 12:cancers12123688. [PMID: 33316938 PMCID: PMC7764147 DOI: 10.3390/cancers12123688] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 12/07/2020] [Accepted: 12/08/2020] [Indexed: 02/07/2023] Open
Abstract
Simple Summary The aim of this review is to summarize lamin A/C’s currently known functions in both normal and diseased cells. Lamin A/C is a nuclear protein with many functions in cells, such as maintaining a cell’s structural stability, cell motility, mechanosensing, chromosome organization, gene regulation, cell differentiation, DNA damage repair, and telomere protection. Mutations of the lamin A/C gene, incorrect processing of the protein, and lamin A/C deregulation can lead to various diseases and cancer. This review touches on diseases caused by mutation and incorrect processing of lamin A/C, called laminopathies. The effect of lamin A/C deregulation in cancer is also reviewed, and lamin A/C’s potential in helping to diagnose prostate cancers more accurately is discussed. Abstract This review is focused on lamin A/C, a nuclear protein with multiple functions in normal and diseased cells. Its functions, as known to date, are summarized. This summary includes its role in maintaining a cell’s structural stability, cell motility, mechanosensing, chromosome organization, gene regulation, cell differentiation, DNA damage repair, and telomere protection. As lamin A/C has a variety of critical roles within the cell, mutations of the lamin A/C gene and incorrect processing of the protein results in a wide variety of diseases, ranging from striated muscle disorders to accelerated aging diseases. These diseases, collectively termed laminopathies, are also touched upon. Finally, we review the existing evidence of lamin A/C’s deregulation in cancer. Lamin A/C deregulation leads to various traits, including genomic instability and increased tolerance to mechanical insult, which can lead to more aggressive cancer and poorer prognosis. As lamin A/C’s expression in specific cancers varies widely, currently known lamin A/C expression in various cancers is reviewed. Additionally, Lamin A/C’s potential as a biomarker in various cancers and as an aid in more accurately diagnosing intermediate Gleason score prostate cancers is also discussed.
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12
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Lamin A/C and the Immune System: One Intermediate Filament, Many Faces. Int J Mol Sci 2020; 21:ijms21176109. [PMID: 32854281 PMCID: PMC7504305 DOI: 10.3390/ijms21176109] [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: 07/31/2020] [Revised: 08/19/2020] [Accepted: 08/21/2020] [Indexed: 12/11/2022] Open
Abstract
Nuclear envelope lamin A/C proteins are a major component of the mammalian nuclear lamina, a dense fibrous protein meshwork located in the nuclear interior. Lamin A/C proteins regulate nuclear mechanics and structure and control cellular signaling, gene transcription, epigenetic regulation, cell cycle progression, cell differentiation, and cell migration. The immune system is composed of the innate and adaptive branches. Innate immunity is mediated by myeloid cells such as neutrophils, macrophages, and dendritic cells. These cells produce a rapid and nonspecific response through phagocytosis, cytokine production, and complement activation, as well as activating adaptive immunity. Specific adaptive immunity is activated by antigen presentation by antigen presenting cells (APCs) and the cytokine microenvironment, and is mainly mediated by the cellular functions of T cells and the production of antibodies by B cells. Unlike most cell types, immune cells regulate their lamin A/C protein expression relatively rapidly to exert their functions, with expression increasing in macrophages, reducing in neutrophils, and increasing transiently in T cells. In this review, we discuss and summarize studies that have addressed the role played by lamin A/C in the functions of innate and adaptive immune cells in the context of human inflammatory and autoimmune diseases, pathogen infections, and cancer.
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13
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Structural and Mechanical Aberrations of the Nuclear Lamina in Disease. Cells 2020; 9:cells9081884. [PMID: 32796718 PMCID: PMC7464082 DOI: 10.3390/cells9081884] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 08/02/2020] [Accepted: 08/10/2020] [Indexed: 12/13/2022] Open
Abstract
The nuclear lamins are the major components of the nuclear lamina in the nuclear envelope. Lamins are involved in numerous functions, including a role in providing structural support to the cell and the mechanosensing of the cell. Mutations in the genes encoding for lamins lead to the rare diseases termed laminopathies. However, not only laminopathies show alterations in the nuclear lamina. Deregulation of lamin expression is reported in multiple cancers and several viral infections lead to a disrupted nuclear lamina. The structural and mechanical effects of alterations in the nuclear lamina can partly explain the phenotypes seen in disease, such as muscular weakness in certain laminopathies and transmigration of cancer cells. However, a lot of answers to questions about the relation between changes in the nuclear lamina and disease development remain elusive. Here, we review the current understandings of the contribution of the nuclear lamina in the structural support and mechanosensing of healthy and diseased cells.
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Addressing the Molecular Mechanism of Longitudinal Lamin Assembly Using Chimeric Fusions. Cells 2020; 9:cells9071633. [PMID: 32645958 PMCID: PMC7407374 DOI: 10.3390/cells9071633] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 07/01/2020] [Accepted: 07/02/2020] [Indexed: 12/28/2022] Open
Abstract
The molecular architecture and assembly mechanism of intermediate filaments have been enigmatic for decades. Among those, lamin filaments are of particular interest due to their universal role in cell nucleus and numerous disease-related mutations. Filament assembly is driven by specific interactions of the elementary dimers, which consist of the central coiled-coil rod domain flanked by non-helical head and tail domains. We aimed to investigate the longitudinal 'head-to-tail' interaction of lamin dimers (the so-called ACN interaction), which is crucial for filament assembly. To this end, we prepared a series of recombinant fragments of human lamin A centred around the N- and C-termini of the rod. The fragments were stabilized by fusions to heterologous capping motifs which provide for a correct formation of parallel, in-register coiled-coil dimers. As a result, we established crystal structures of two N-terminal fragments one of which highlights the propensity of the coiled-coil to open up, and one C-terminal rod fragment. Additional studies highlighted the capacity of such N- and C-terminal fragments to form specific complexes in solution, which were further characterized using chemical cross-linking. These data yielded a molecular model of the ACN complex which features a 6.5 nm overlap of the rod ends.
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15
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Fischer EG. Nuclear Morphology and the Biology of Cancer Cells. Acta Cytol 2020; 64:511-519. [PMID: 32570234 DOI: 10.1159/000508780] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 05/19/2020] [Indexed: 01/09/2023]
Abstract
BACKGROUND For more than a century, diagnostic pathologists have used morphologic abnormalities of the nucleus as essential diagnostic features to distinguish benign from malignant cells. These features include nuclear enlargement and increased nuclear-to-cytoplasmic ratio, nuclear membrane irregularities, hyperchromasia, and abnormal chromatin distribution. As our knowledge about the genetic and epigenetic abnormalities of cancer cells has increased in recent decades, the pathophysiologic mechanisms that underlie these morphologic abnormalities remain incompletely understood. SUMMARY This review attempts to summarize biologic abnormalities in malignant cells related to these morphologic changes. The molecular anatomy of the nuclear envelope in normal and malignant cells is discussed as well as regulation of nuclear size and shape, regulation of signal transduction pathways by molecules of the nuclear envelope, chromatin distribution, and the effects of HPV infection on dysplastic cells in the uterine cervix. Key Message: Causes of morphologic nuclear abnormalities in malignant cells are likely multifactorial. They probably include mutations, dysregulation of signal transduction pathways, abnormal gene expression patterns, alterations of nuclear envelope proteins and chromatin, and aneuploidy.
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Affiliation(s)
- Edgar G Fischer
- Division of Surgical Pathology and Cytopathology, Department of Pathology, University of New Mexico, Albuquerque, New Mexico, USA,
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16
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Maynard S, Keijzers G, Akbari M, Ezra MB, Hall A, Morevati M, Scheibye-Knudsen M, Gonzalo S, Bartek J, Bohr VA. Lamin A/C promotes DNA base excision repair. Nucleic Acids Res 2020; 47:11709-11728. [PMID: 31647095 DOI: 10.1093/nar/gkz912] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 09/25/2019] [Accepted: 10/02/2019] [Indexed: 12/17/2022] Open
Abstract
The A-type lamins (lamin A/C), encoded by the LMNA gene, are important structural components of the nuclear lamina. LMNA mutations lead to degenerative disorders known as laminopathies, including the premature aging disease Hutchinson-Gilford progeria syndrome. In addition, altered lamin A/C expression is found in various cancers. Reports indicate that lamin A/C plays a role in DNA double strand break repair, but a role in DNA base excision repair (BER) has not been described. We provide evidence for reduced BER efficiency in lamin A/C-depleted cells (Lmna null MEFs and lamin A/C-knockdown U2OS). The mechanism involves impairment of the APE1 and POLβ BER activities, partly effectuated by associated reduction in poly-ADP-ribose chain formation. Also, Lmna null MEFs displayed reduced expression of several core BER enzymes (PARP1, LIG3 and POLβ). Absence of Lmna led to accumulation of 8-oxoguanine (8-oxoG) lesions, and to an increased frequency of substitution mutations induced by chronic oxidative stress including GC>TA transversions (a fingerprint of 8-oxoG:A mismatches). Collectively, our results provide novel insights into the functional interplay between the nuclear lamina and cellular defenses against oxidative DNA damage, with implications for cancer and aging.
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Affiliation(s)
- Scott Maynard
- Danish Cancer Society Research Center, DK-2100 Copenhagen, Denmark
| | - Guido Keijzers
- Department of Cellular and Molecular Medicine, Center for Healthy Aging, University of Copenhagen, DK-2200 Copenhagen, Denmark
| | - Mansour Akbari
- Department of Cellular and Molecular Medicine, Center for Healthy Aging, University of Copenhagen, DK-2200 Copenhagen, Denmark
| | - Michael Ben Ezra
- Department of Cellular and Molecular Medicine, Center for Healthy Aging, University of Copenhagen, DK-2200 Copenhagen, Denmark
| | - Arnaldur Hall
- Danish Cancer Society Research Center, DK-2100 Copenhagen, Denmark
| | - Marya Morevati
- Department of Cellular and Molecular Medicine, Center for Healthy Aging, University of Copenhagen, DK-2200 Copenhagen, Denmark
| | - Morten Scheibye-Knudsen
- Department of Cellular and Molecular Medicine, Center for Healthy Aging, University of Copenhagen, DK-2200 Copenhagen, Denmark
| | - Susana Gonzalo
- Department of Biochemistry and Molecular Biology, Saint Louis University, School of Medicine, Saint Louis, MO 63104, USA
| | - Jiri Bartek
- Danish Cancer Society Research Center, DK-2100 Copenhagen, Denmark.,Division of Genome Biology, Department of Medical Biochemistry and Biophysics, Science for Life Laboratory, Karolinska Institute, SE-17177 Stockholm, Sweden
| | - Vilhelm A Bohr
- Department of Cellular and Molecular Medicine, Center for Healthy Aging, University of Copenhagen, DK-2200 Copenhagen, Denmark.,Laboratory of Molecular Gerontology, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA
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17
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Alvarado-Kristensson M, Rosselló CA. The Biology of the Nuclear Envelope and Its Implications in Cancer Biology. Int J Mol Sci 2019; 20:E2586. [PMID: 31137762 PMCID: PMC6566445 DOI: 10.3390/ijms20102586] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2019] [Revised: 05/07/2019] [Accepted: 05/25/2019] [Indexed: 12/18/2022] Open
Abstract
The formation of the nuclear envelope and the subsequent compartmentalization of the genome is a defining feature of eukaryotes. Traditionally, the nuclear envelope was purely viewed as a physical barrier to preserve genetic material in eukaryotic cells. However, in the last few decades, it has been revealed to be a critical cellular component in controlling gene expression and has been implicated in several human diseases. In cancer, the relevance of the cell nucleus was first reported in the mid-1800s when an altered nuclear morphology was observed in tumor cells. This review aims to give a current and comprehensive view of the role of the nuclear envelope on cancer first by recapitulating the changes of the nuclear envelope during cell division, second, by reviewing the role of the nuclear envelope in cell cycle regulation, signaling, and the regulation of the genome, and finally, by addressing the nuclear envelope link to cell migration and metastasis and its use in cancer prognosis.
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Affiliation(s)
- Maria Alvarado-Kristensson
- Molecular Pathology, Department of Translational Medicine, Lund University, Skåne University Hospital, 20502 Malmö, Sweden.
| | - Catalina Ana Rosselló
- Laboratory of Molecular Cell Biomedicine, University of the Balearic Islands, 07121 Palma de Mallorca, Spain.
- Lipopharma Therapeutics, Isaac Newton, 07121 Palma de Mallorca, Spain.
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18
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Tyrsina E, Nikulitskiy S, Inshakov A, Ryabaya O, Tyrsin D. Detection and quantification of VEGFR-1 in the nuclei of tumor cells by a new flow cytometry-based method. J Immunotoxicol 2019; 16:74-81. [DOI: 10.1080/1547691x.2019.1598522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
Affiliation(s)
- Ekaterina Tyrsina
- Laboratory of Experimental Diagnostics and Biotherapy of Tumors, Research Institute of Experimental Diagnostics and Therapy of Tumors, N. N. Blokhin National Medical Research Center of Oncology, Ministry of Health of Russia, Moscow, Russia
| | - Sergey Nikulitskiy
- Laboratory of Experimental Diagnostics and Biotherapy of Tumors, Research Institute of Experimental Diagnostics and Therapy of Tumors, N. N. Blokhin National Medical Research Center of Oncology, Ministry of Health of Russia, Moscow, Russia
| | - Andrey Inshakov
- Laboratory of Experimental Diagnostics and Biotherapy of Tumors, Research Institute of Experimental Diagnostics and Therapy of Tumors, N. N. Blokhin National Medical Research Center of Oncology, Ministry of Health of Russia, Moscow, Russia
| | - Oxana Ryabaya
- Laboratory of Experimental Diagnostics and Biotherapy of Tumors, Research Institute of Experimental Diagnostics and Therapy of Tumors, N. N. Blokhin National Medical Research Center of Oncology, Ministry of Health of Russia, Moscow, Russia
| | - Dmitry Tyrsin
- Laboratory of Experimental Diagnostics and Biotherapy of Tumors, Research Institute of Experimental Diagnostics and Therapy of Tumors, N. N. Blokhin National Medical Research Center of Oncology, Ministry of Health of Russia, Moscow, Russia
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19
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Misono S, Seki N, Mizuno K, Yamada Y, Uchida A, Arai T, Kumamoto T, Sanada H, Suetsugu T, Inoue H. Dual strands of the miR-145 duplex (miR-145-5p and miR-145-3p) regulate oncogenes in lung adenocarcinoma pathogenesis. J Hum Genet 2018; 63:1015-1028. [PMID: 30082847 DOI: 10.1038/s10038-018-0497-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Revised: 07/18/2018] [Accepted: 07/21/2018] [Indexed: 12/15/2022]
Abstract
Our original microRNA (miRNA) expression signatures (based on RNA sequencing) revealed that both strands of the miR-145 duplex (miR-145-5p, the guide strand, and miR-145-3p, the passenger strand) were downregulated in several types of cancer tissues. Involvement of passenger strands of miRNAs in cancer pathogenesis is a new concept in miRNA biogenesis. In our continuing analysis of lung adenocarcinoma (LUAD) pathogenesis, we aimed here to identify important oncogenes that were controlled by miR-145-5p and miR-145-3p. Downregulation of miR-145-5p and miR-145-3p was confirmed in LUAD clinical specimens. Functional assays showed that miR-145-3p significantly blocked the malignant abilities in LUAD cells, e.g., cancer cell proliferation, migration and invasion. Thus, the data showed that expression of the passenger strand of the miR-145-duplex acted as an anti-tumor miRNA. In LUAD cells, we identified four possible target genes (LMNB2, NLN, SIX4, and DDC) that might be regulated by both strands of miR-145. Among the possible targets, high expression of LMNB2 predicted a significantly poorer prognosis of LUAD patients (disease-free survival, p = 0.0353 and overall survival, p = 0.0017). Overexpression of LMNB2 was detected in LUAD clinical specimens and its aberrant expression promoted malignant transformation of LUAD cells. Genes regulated by anti-tumor miR-145-5p and miR-145-3p are closely involved in the molecular pathogenesis of LUAD. We suggest that they are promising prognostic markers for this disease. Our approach, based on the roles of anti-tumor miRNAs, will contribute to improved understanding of the molecular pathogenesis of LUAD.
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Affiliation(s)
- Shunsuke Misono
- Department of Pulmonary Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, 890-8520, Japan
| | - Naohiko Seki
- Department of Functional Genomics, Chiba University Graduate School of Medicine, Chuo-ku, Chiba, 260-8670, Japan.
| | - Keiko Mizuno
- Department of Pulmonary Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, 890-8520, Japan
| | - Yasutaka Yamada
- Department of Functional Genomics, Chiba University Graduate School of Medicine, Chuo-ku, Chiba, 260-8670, Japan
| | - Akifumi Uchida
- Department of Pulmonary Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, 890-8520, Japan
| | - Takayuki Arai
- Department of Functional Genomics, Chiba University Graduate School of Medicine, Chuo-ku, Chiba, 260-8670, Japan
| | - Tomohiro Kumamoto
- Department of Pulmonary Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, 890-8520, Japan
| | - Hiroki Sanada
- Department of Pulmonary Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, 890-8520, Japan
| | - Takayuki Suetsugu
- Department of Pulmonary Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, 890-8520, Japan
| | - Hiromasa Inoue
- Department of Pulmonary Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, 890-8520, Japan
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20
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Kopeina GS, Prokhorova EA, Lavrik IN, Zhivotovsky B. Alterations in the nucleocytoplasmic transport in apoptosis: Caspases lead the way. Cell Prolif 2018; 51:e12467. [PMID: 29947118 DOI: 10.1111/cpr.12467] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Accepted: 04/19/2018] [Indexed: 12/13/2022] Open
Abstract
Apoptosis is a mode of regulated cell death that is indispensable for the morphogenesis, development and homeostasis of multicellular organisms. Caspases are cysteine-dependent aspartate-specific proteases, which function as initiators and executors of apoptosis. Caspases are cytosolic proteins that can cleave substrates located in different intracellular compartments during apoptosis. Many years ago, the involvement of caspases in the regulation of nuclear changes, a hallmark of apoptosis, was documented. Accumulated data suggest that apoptosis-associated alterations in nucleocytoplasmic transport are also linked to caspase activity. Here, we aim to discuss the current state of knowledge regarding this process. Particular attention will be focused on caspase nuclear entry and their functions in the demolition of the nucleus upon apoptotic stimuli.
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Affiliation(s)
- Gelina S Kopeina
- Faculty of Medicine, Lomonosov Moscow State University, Moscow, Russia
| | | | - Inna N Lavrik
- Faculty of Medicine, Lomonosov Moscow State University, Moscow, Russia.,Translational Inflammation Research, Medical Faculty, Otto von Guericke University, Magdeburg, Germany
| | - Boris Zhivotovsky
- Faculty of Medicine, Lomonosov Moscow State University, Moscow, Russia.,Division of Toxicology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
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21
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Tyrsina EG, Nikulitskiy SI, Inshakov AN, Ryabaya OO. VEGF-R1 as a Potential Molecular Target for Anticancer Therapy. DOKL BIOCHEM BIOPHYS 2018. [PMID: 29536302 DOI: 10.1134/s1607672918010052] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The possibility of using VEGF-R1 receptor for targeted therapy in oncology was investigated. Using the approach to measuring the protein content in intact nuclei of cells, which was developed by us, we showed the presence of this receptor in the nuclei of tumor, but not normal cells. A direct correlation between the level of VEGF-R1 expression in the nucleus and the degree of malignancy of tumor cells, indicating the prognostic value of this parameter, was found. The mechanisms of the functioning of this receptor and the pathways of inhibiting its activity are discussed, and the validity of the selection of VEGF-R1 as a molecular target for anticancer therapy is conformed.
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Affiliation(s)
- E G Tyrsina
- Blokhin Russian Cancer Research Center, Ministry of Health of the Russian Federation, Moscow, 115478, Russia.
| | - S I Nikulitskiy
- Blokhin Russian Cancer Research Center, Ministry of Health of the Russian Federation, Moscow, 115478, Russia
| | - A N Inshakov
- Blokhin Russian Cancer Research Center, Ministry of Health of the Russian Federation, Moscow, 115478, Russia
| | - O O Ryabaya
- Blokhin Russian Cancer Research Center, Ministry of Health of the Russian Federation, Moscow, 115478, Russia
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22
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Chen L, Jiang F, Qiao Y, Li H, Wei Z, Huang T, Lan J, Xia Y, Li J. Nucleoskeletal stiffness regulates stem cell migration and differentiation through lamin A/C. J Cell Physiol 2018; 233:5112-5118. [PMID: 29215717 DOI: 10.1002/jcp.26336] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Accepted: 11/27/2017] [Indexed: 02/05/2023]
Abstract
Stem cell-based tissue engineering provides a prospective strategy to bone tissue repair. Bone tissue repair begins at the recruitment and directional movement of stem cells, and ultimately achieved on the directional differentiation of stem cells. The migration and differentiation of stem cells are regulated by nucleoskeletal stiffness. Mechanical properties of lamin A/C contribute to the nucleoskeletal stiffness and consequently to the regulation of cell migration and differentiation. Nuclear lamin A/C determines cell migration through the regulation of nucleoskeletal stiffness and rigidity and involve in nuclear-cytoskeletal coupling. Moreover, lamin A/C is the essential core module regulating stem cell differentiation. The cells with higher migration ability tend to have enhanced differentiation potential, while the optimum amount of lamin A/C in migration and differentiation of MSCs is in conflict. This contrary phenomenon may be the result of mechanical microenvironment modulation.
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Affiliation(s)
- Liujing Chen
- Department of Orthodontics, West China Hospital of Stomatology, West China School of Stomatology Sichuan University, State Key Laboratory of Oral Diseases, Chengdu, Sichuan, China
| | - Fulin Jiang
- Department of Orthodontics, West China Hospital of Stomatology, West China School of Stomatology Sichuan University, State Key Laboratory of Oral Diseases, Chengdu, Sichuan, China
| | - Yini Qiao
- Department of Orthodontics, West China Hospital of Stomatology, West China School of Stomatology Sichuan University, State Key Laboratory of Oral Diseases, Chengdu, Sichuan, China
| | - Hong Li
- Hangzhou Dental Hospital, School of Stomatology, Zhejiang Chinese Medical University, Hangzhou, China
| | - Zhangming Wei
- Department of Orthodontics, West China Hospital of Stomatology, West China School of Stomatology Sichuan University, State Key Laboratory of Oral Diseases, Chengdu, Sichuan, China
| | - Tu Huang
- Department of Orthodontics, West China Hospital of Stomatology, West China School of Stomatology Sichuan University, State Key Laboratory of Oral Diseases, Chengdu, Sichuan, China
| | - Jingxiang Lan
- Department of Orthodontics, West China Hospital of Stomatology, West China School of Stomatology Sichuan University, State Key Laboratory of Oral Diseases, Chengdu, Sichuan, China
| | - Yue Xia
- Department of Orthodontics, West China Hospital of Stomatology, West China School of Stomatology Sichuan University, State Key Laboratory of Oral Diseases, Chengdu, Sichuan, China
| | - Juan Li
- Department of Orthodontics, West China Hospital of Stomatology, West China School of Stomatology Sichuan University, State Key Laboratory of Oral Diseases, Chengdu, Sichuan, China
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23
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Guinde J, Kaspi E, Frankel D, Perrin S, Laroumagne S, Robaglia-Schlupp A, Ostacolo K, Harhouri K, Tazi-Mezalek R, Micallef J, Dutau H, Tomasini P, De Sandre-Giovannoli A, Levy N, Cau P, Astoul P, Roll P. Lamine A comme marqueur pronostique dans les adénocarcinomes bronchiques métastatiques : étude in vivo à partir d’épanchements pleuraux métastatiques. Rev Mal Respir 2018. [DOI: 10.1016/j.rmr.2017.10.221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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24
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Kaspi E, Frankel D, Guinde J, Perrin S, Laroumagne S, Robaglia-Schlupp A, Ostacolo K, Harhouri K, Tazi-Mezalek R, Micallef J, Dutau H, Tomasini P, De Sandre-Giovannoli A, Lévy N, Cau P, Astoul P, Roll P. Low lamin A expression in lung adenocarcinoma cells from pleural effusions is a pejorative factor associated with high number of metastatic sites and poor Performance status. PLoS One 2017; 12:e0183136. [PMID: 28806747 PMCID: PMC5555706 DOI: 10.1371/journal.pone.0183136] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Accepted: 07/31/2017] [Indexed: 11/29/2022] Open
Abstract
The type V intermediate filament lamins are the principal components of the nuclear matrix, including the nuclear lamina. Lamins are divided into A-type and B-type, which are encoded by three genes, LMNA, LMNB1, and LMNB2. The alternative splicing of LMNA produces two major A-type lamins, lamin A and lamin C. Previous studies have suggested that lamins are involved in cancer development and progression. A-type lamins have been proposed as biomarkers for cancer diagnosis, prognosis, and/or follow-up. The aim of the present study was to investigate lamins in cancer cells from metastatic pleural effusions using immunofluorescence, western blotting, and flow cytometry. In a sub-group of lung adenocarcinomas, we found reduced expression of lamin A but not of lamin C. The reduction in lamin A expression was correlated with the loss of epithelial membrane antigen (EMA)/MUC-1, an epithelial marker that is involved in the epithelial to mesenchymal transition (EMT). Finally, the lamin A expression was inversely correlated with the number of metastatic sites and the WHO Performance status, and association of pleural, bone and lung metastatic localizations was more frequent when lamin A expression was reduced. In conclusion, low lamin A but not lamin C expression in pleural metastatic cells could represent a major actor in the development of metastasis, associated with EMT and could account for a pejorative factor correlated with a poor Performance status.
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Affiliation(s)
- Elise Kaspi
- Aix Marseille Univ, INSERM, GMGF, Marseille, France
- APHM, Hôpital la Timone, Service de Biologie Cellulaire, Marseille, France
| | - Diane Frankel
- Aix Marseille Univ, INSERM, GMGF, Marseille, France
- APHM, Hôpital la Timone, Service de Biologie Cellulaire, Marseille, France
| | - Julien Guinde
- Aix Marseille Univ, INSERM, GMGF, Marseille, France
- APHM, Hôpital Nord, Department of Thoracic Oncology–Pleural diseases–Interventional pulmonology, Marseille, France
| | | | - Sophie Laroumagne
- APHM, Hôpital Nord, Department of Thoracic Oncology–Pleural diseases–Interventional pulmonology, Marseille, France
| | - Andrée Robaglia-Schlupp
- Aix Marseille Univ, INSERM, GMGF, Marseille, France
- APHM, Hôpital la Timone, Service de Biologie Cellulaire, Marseille, France
- APHM, Hôpital la Timone, Département de Génétique Médicale et Centre de Ressources Biologiques, Marseille, France
| | | | | | - Rachid Tazi-Mezalek
- APHM, Hôpital Nord, Department of Thoracic Oncology–Pleural diseases–Interventional pulmonology, Marseille, France
| | - Joelle Micallef
- APHM, Hôpital la Timone, Service de Pharmacologie Clinique & Centre d’Investigation Clinique—CPCET, Marseille, France
- Aix Marseille Univ, CNRS, INT, Inst Neurosci Timone, Marseille, France
| | - Hervé Dutau
- APHM, Hôpital Nord, Department of Thoracic Oncology–Pleural diseases–Interventional pulmonology, Marseille, France
| | - Pascale Tomasini
- Aix Marseille Univ, APHM, Marseille Early Phases Cancer Trials Center CLIP, Marseille, France
| | - Annachiara De Sandre-Giovannoli
- Aix Marseille Univ, INSERM, GMGF, Marseille, France
- APHM, Hôpital la Timone, Département de Génétique Médicale et Centre de Ressources Biologiques, Marseille, France
| | - Nicolas Lévy
- Aix Marseille Univ, INSERM, GMGF, Marseille, France
- APHM, Hôpital la Timone, Département de Génétique Médicale et Centre de Ressources Biologiques, Marseille, France
| | - Pierre Cau
- Aix Marseille Univ, INSERM, GMGF, Marseille, France
| | - Philippe Astoul
- APHM, Hôpital Nord, Department of Thoracic Oncology–Pleural diseases–Interventional pulmonology, Marseille, France
- Aix Marseille Univ, Marseille, France
| | - Patrice Roll
- Aix Marseille Univ, INSERM, GMGF, Marseille, France
- APHM, Hôpital la Timone, Service de Biologie Cellulaire, Marseille, France
- * E-mail:
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25
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Rauschert I, Aldunate F, Preussner J, Arocena-Sutz M, Peraza V, Looso M, Benech JC, Agrelo R. Promoter hypermethylation as a mechanism for Lamin A/C silencing in a subset of neuroblastoma cells. PLoS One 2017; 12:e0175953. [PMID: 28422997 PMCID: PMC5397038 DOI: 10.1371/journal.pone.0175953] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2016] [Accepted: 04/03/2017] [Indexed: 02/07/2023] Open
Abstract
Nuclear lamins support the nuclear envelope and provide anchorage sites for chromatin. They are involved in DNA synthesis, transcription, and replication. It has previously been reported that the lack of Lamin A/C expression in lymphoma and leukaemia is due to CpG island promoter hypermethylation. Here, we provide evidence that Lamin A/C is silenced via this mechanism in a subset of neuroblastoma cells. Moreover, Lamin A/C expression can be restored with a demethylating agent. Importantly, Lamin A/C reintroduction reduced cell growth kinetics and impaired migration, invasion, and anchorage-independent cell growth. Cytoskeletal restructuring was also induced. In addition, the introduction of lamin Δ50, known as Progerin, caused senescence in these neuroblastoma cells. These cells were stiffer and developed a cytoskeletal structure that differed from that observed upon Lamin A/C introduction. Of relevance, short hairpin RNA Lamin A/C depletion in unmethylated neuroblastoma cells enhanced the aforementioned tumour properties. A cytoskeletal structure similar to that observed in methylated cells was induced. Furthermore, atomic force microscopy revealed that Lamin A/C knockdown decreased cellular stiffness in the lamellar region. Finally, the bioinformatic analysis of a set of methylation arrays of neuroblastoma primary tumours showed that a group of patients (around 3%) gives a methylation signal in some of the CpG sites located within the Lamin A/C promoter region analysed by bisulphite sequencing PCR. These findings highlight the importance of Lamin A/C epigenetic inactivation for a subset of neuroblastomas, leading to enhanced tumour properties and cytoskeletal changes. Additionally, these findings may have treatment implications because tumour cells lacking Lamin A/C exhibit more aggressive behaviour.
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Affiliation(s)
- Ines Rauschert
- Laboratory of Cellular Signaling and Nanobiology, Instituto de Investigaciones Biológicas Clemente Estable, Montevideo, Uruguay
| | - Fabian Aldunate
- Epigenetics of Cancer and Aging Laboratory, Institut Pasteur de Montevideo, Montevideo, Uruguay
| | - Jens Preussner
- Bioinformatics Core Unit (BCU), Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Miguel Arocena-Sutz
- Epigenetics of Cancer and Aging Laboratory, Institut Pasteur de Montevideo, Montevideo, Uruguay
| | - Vanina Peraza
- Epigenetics of Cancer and Aging Laboratory, Institut Pasteur de Montevideo, Montevideo, Uruguay
| | - Mario Looso
- Bioinformatics Core Unit (BCU), Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Juan C. Benech
- Laboratory of Cellular Signaling and Nanobiology, Instituto de Investigaciones Biológicas Clemente Estable, Montevideo, Uruguay
| | - Ruben Agrelo
- Epigenetics of Cancer and Aging Laboratory, Institut Pasteur de Montevideo, Montevideo, Uruguay
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26
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Efficacy, long-term toxicity, and mechanistic studies of gold nanorods photothermal therapy of cancer in xenograft mice. Proc Natl Acad Sci U S A 2017; 114:E3110-E3118. [PMID: 28356516 DOI: 10.1073/pnas.1619302114] [Citation(s) in RCA: 179] [Impact Index Per Article: 25.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Gold nanorods (AuNRs)-assisted plasmonic photothermal therapy (AuNRs-PPTT) is a promising strategy for combating cancer in which AuNRs absorb near-infrared light and convert it into heat, causing cell death mainly by apoptosis and/or necrosis. Developing a valid PPTT that induces cancer cell apoptosis and avoids necrosis in vivo and exploring its molecular mechanism of action is of great importance. Furthermore, assessment of the long-term fate of the AuNRs after treatment is critical for clinical use. We first optimized the size, surface modification [rifampicin (RF) conjugation], and concentration (2.5 nM) of AuNRs and the PPTT laser power (2 W/cm2) to achieve maximal induction of apoptosis. Second, we studied the potential mechanism of action of AuNRs-PPTT using quantitative proteomic analysis in mouse tumor tissues. Several death pathways were identified, mainly involving apoptosis and cell death by releasing neutrophil extracellular traps (NETs) (NETosis), which were more obvious upon PPTT using RF-conjugated AuNRs (AuNRs@RF) than with polyethylene glycol thiol-conjugated AuNRs. Cytochrome c and p53-related apoptosis mechanisms were identified as contributing to the enhanced effect of PPTT with AuNRs@RF. Furthermore, Pin1 and IL18-related signaling contributed to the observed perturbation of the NETosis pathway by PPTT with AuNRs@RF. Third, we report a 15-month toxicity study that showed no long-term toxicity of AuNRs in vivo. Together, these data demonstrate that our AuNRs-PPTT platform is effective and safe for cancer therapy in mouse models. These findings provide a strong framework for the translation of PPTT to the clinic.
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27
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Shah P, Wolf K, Lammerding J. Bursting the Bubble - Nuclear Envelope Rupture as a Path to Genomic Instability? Trends Cell Biol 2017; 27:546-555. [PMID: 28285738 DOI: 10.1016/j.tcb.2017.02.008] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2016] [Revised: 02/17/2017] [Accepted: 02/17/2017] [Indexed: 01/22/2023]
Abstract
The nuclear envelope safeguards the genetic material inside the nucleus by separating it from the cytoplasm. Until recently, it was assumed that nuclear envelope (NE) breakdown occurs only in a highly controlled fashion during mitosis when the chromatin is condensed and divided between the daughter cells. However, recent studies have demonstrated that adherent and migrating cells exhibit transient NE rupture during interphase caused by compression from cytoskeletal or external forces. NE rupture results in uncontrolled exchange between the nuclear interior and cytoplasm and leads to DNA damage. In this review, we discuss the causes and consequences of NE rupture, and how NE rupture could contribute to genomic instability.
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Affiliation(s)
- Pragya Shah
- Weill Institute for Cell and Molecular Biology, Cornell University, Ithaca, NY, USA
| | - Katarina Wolf
- Department of Cell Biology, Radboud University Medical Centre, 6525 GA Nijmegen, The Netherlands
| | - Jan Lammerding
- Weill Institute for Cell and Molecular Biology, Cornell University, Ithaca, NY, USA; Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY, USA.
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Bigley RB, Payumo AY, Alexander JM, Huang GN. Insights into nuclear dynamics using live-cell imaging approaches. WILEY INTERDISCIPLINARY REVIEWS. SYSTEMS BIOLOGY AND MEDICINE 2017; 9:10.1002/wsbm.1372. [PMID: 28078793 PMCID: PMC5315593 DOI: 10.1002/wsbm.1372] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Revised: 10/27/2016] [Accepted: 10/28/2016] [Indexed: 11/11/2022]
Abstract
The nucleus contains the genetic blueprint of the cell and myriad interactions within this subcellular structure are required for gene regulation. In the current scientific era, characterization of these gene regulatory networks through biochemical techniques coupled with systems-wide 'omic' approaches has become commonplace. However, these strategies are limited because they represent a mere snapshot of the cellular state. To obtain a holistic understanding of nuclear dynamics, relevant molecules must be studied in their native contexts in living systems. Live-cell imaging approaches are capable of providing quantitative assessment of the dynamics of gene regulatory interactions within the nucleus. We survey recent insights into what live-cell imaging approaches have provided the field of nuclear dynamics. In this review, we focus on interactions of DNA with other DNA loci, proteins, RNA, and the nuclear envelope. WIREs Syst Biol Med 2017, 9:e1372. doi: 10.1002/wsbm.1372 For further resources related to this article, please visit the WIREs website.
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Affiliation(s)
- Rachel B. Bigley
- Cardiovascular Research Institute and Department of Physiology, School of Medicine, University of California, San Francisco CA 94158, USA
| | - Alexander Y. Payumo
- Cardiovascular Research Institute and Department of Physiology, School of Medicine, University of California, San Francisco CA 94158, USA
| | - Jeffrey M. Alexander
- Cardiovascular Research Institute and Department of Physiology, School of Medicine, University of California, San Francisco CA 94158, USA
| | - Guo N. Huang
- Cardiovascular Research Institute and Department of Physiology, School of Medicine, University of California, San Francisco CA 94158, USA
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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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Liu L, Luo Q, Sun J, Song G. Nucleus and nucleus-cytoskeleton connections in 3D cell migration. Exp Cell Res 2016; 348:56-65. [DOI: 10.1016/j.yexcr.2016.09.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2016] [Revised: 09/02/2016] [Accepted: 09/03/2016] [Indexed: 12/21/2022]
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Baik IH, Jo GH, Seo D, Ko MJ, Cho CH, Lee MG, Lee YH. Knockdown of RPL9 expression inhibits colorectal carcinoma growth via the inactivation of Id-1/NF-κB signaling axis. Int J Oncol 2016; 49:1953-1962. [PMID: 27633352 DOI: 10.3892/ijo.2016.3688] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Accepted: 08/25/2016] [Indexed: 11/06/2022] Open
Abstract
Ribosomal protein L9 (RPL9), a component of the 60S subunit for protein synthesis, is upregulated in human colorectal cancer. In the present study, we investigated whether RPL9 gained extraribosomal function during tumorigenesis and whether targeting of RPL9 with small interfering (si) RNA could alter the course of colorectal cancer progression. Our results showed that siRNA knockdown of RPL9 suppresses colorectal cancer (CRC) cell growth and long-term colony formation through an increase in sub-G1 cell population and a strong induction of apoptotic cell death. To obtain insights into the molecular changes in response to RPL9 knockdown, global changes in gene expression were examined using RNA sequencing. It revealed that RPL9-specific knockdown led to dysregulation of 918 genes in HCT116 and 3178 genes in HT29 cells. Among these, 296 genes showed same directional regulation (128 upregulated and 168 downregulated genes) and were considered as a common RPL9 knockdown signature. Particularly, we found through a network analysis that Id-1, which is functionally associated with activation of NF-κB and cell survival, was commonly downregulated. Subsequent western blot analysis affirmed that RPL9 silencing induced the decrease in the levels of Id-1 and phosphorylated IκBα in both HCT116 and HT29 cells. Also, the same condition decreased the levels of PARP-1 and pro-caspase-3, accelerating apoptosis. Furthermore, inhibition of RPL9 expression significantly suppressed the growth of human CRC xenografts in nude mice. These findings indicate that the function of RPL9 is correlated with Id-1/NF-κB signaling axis and suggest that targeting RPL9 could be an attractive option for molecular therapy of colorectal cancer.
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Affiliation(s)
- In Hye Baik
- Department of Molecular Medicine, Keimyung University School of Medicine, Daegu, Republic of Korea
| | - Guk-Heui Jo
- Myunggok Eye Research Institute, Kim's Eye Hospital, Konyang University College of Medicine, Seoul, Republic of Korea
| | - Daekwan Seo
- Severance Biomedical Science Institute, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Min Ji Ko
- Department of Molecular Medicine, Keimyung University School of Medicine, Daegu, Republic of Korea
| | - Chi Heum Cho
- Department of Obstetrics and Gynecology, Keimyung University School of Medicine, Daegu, Republic of Korea
| | - Min Goo Lee
- Department of Pharmacology and Brain Korea 21 Project for Medical Sciences, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Yun-Han Lee
- Department of Molecular Medicine, Keimyung University School of Medicine, Daegu, Republic of Korea
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Meaburn KJ. Spatial Genome Organization and Its Emerging Role as a Potential Diagnosis Tool. Front Genet 2016; 7:134. [PMID: 27507988 PMCID: PMC4961005 DOI: 10.3389/fgene.2016.00134] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Accepted: 07/13/2016] [Indexed: 12/12/2022] Open
Abstract
In eukaryotic cells the genome is highly spatially organized. Functional relevance of higher order genome organization is implied by the fact that specific genes, and even whole chromosomes, alter spatial position in concert with functional changes within the nucleus, for example with modifications to chromatin or transcription. The exact molecular pathways that regulate spatial genome organization and the full implication to the cell of such an organization remain to be determined. However, there is a growing realization that the spatial organization of the genome can be used as a marker of disease. While global genome organization patterns remain largely conserved in disease, some genes and chromosomes occupy distinct nuclear positions in diseased cells compared to their normal counterparts, with the patterns of reorganization differing between diseases. Importantly, mapping the spatial positioning patterns of specific genomic loci can distinguish cancerous tissue from benign with high accuracy. Genome positioning is an attractive novel biomarker since additional quantitative biomarkers are urgently required in many cancer types. Current diagnostic techniques are often subjective and generally lack the ability to identify aggressive cancer from indolent, which can lead to over- or under-treatment of patients. Proof-of-principle for the use of genome positioning as a diagnostic tool has been provided based on small scale retrospective studies. Future large-scale studies are required to assess the feasibility of bringing spatial genome organization-based diagnostics to the clinical setting and to determine if the positioning patterns of specific loci can be useful biomarkers for cancer prognosis. Since spatial reorganization of the genome has been identified in multiple human diseases, it is likely that spatial genome positioning patterns as a diagnostic biomarker may be applied to many diseases.
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Affiliation(s)
- Karen J. Meaburn
- Cell Biology of Genomes Group, National Cancer Institute, National Institutes of HealthBethesda, MD, USA
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Krause M, Wolf K. Cancer cell migration in 3D tissue: negotiating space by proteolysis and nuclear deformability. Cell Adh Migr 2015; 9:357-66. [PMID: 26301444 DOI: 10.1080/19336918.2015.1061173] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Efficient tumor cell invasion into the surrounding desmoplastic stroma is a hallmark of cancer progression and involves the navigation through available small tissue spaces existent within the dense stromal network. Such navigation includes the reciprocal adaptation of the moving tumor cell, including the nucleus as largest and stiffest organelle, to pre-existent or de-novo generated extracellular matrix (ECM) gaps, pores and trails within stromal compartments. Within the context of migration, we briefly summarize physiological and tumor-related changes in ECM geometries as well as tissue proteolysis. We then focus on mechanisms that ensure the successful translocation of a nucleus through a confining pore by cytoskeleton-mediated coupling, as well as regulators of cell and nuclear deformability such as chromatin organization and nuclear lamina expression. In summary, understanding dynamic nuclear mechanics during migration in response to confined space will add to a better conceptual appreciation of cancer invasion and progression.
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Affiliation(s)
- Marina Krause
- a Department of Cell Biology ; Radboud University Medical Center ; Nijmegen , The Netherlands
| | - Katarina Wolf
- a Department of Cell Biology ; Radboud University Medical Center ; Nijmegen , The Netherlands
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