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Brankiewicz-Kopcinska W, Kallingal A, Krzemieniecki R, Baginski M. Targeting shelterin proteins for cancer therapy. Drug Discov Today 2024; 29:104056. [PMID: 38844065 DOI: 10.1016/j.drudis.2024.104056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Revised: 05/17/2024] [Accepted: 05/31/2024] [Indexed: 06/12/2024]
Abstract
As a global health challenge, cancer prompts continuous exploration for innovative therapies that are also based on new targets. One promising avenue is targeting the shelterin protein complex, a safeguard for telomeres crucial in preventing DNA damage. The role of shelterin in modulating ataxia-telangiectasia mutated (ATM) and ataxia-telangiectasia and Rad3-related (ATR) kinases, key players in the DNA damage response (DDR), establishes its significance in cancer cells. Disrupting these defence mechanisms of shelterins, especially in cancer cells, renders telomeres vulnerable, potentially leading to genomic instability and hindering cancer cell survival. In this review, we outline recent approaches exploring shelterins as potential anticancer targets, highlighting the prospect of developing selective molecules to exploit telomere vulnerabilities toward new innovative cancer treatments.
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Affiliation(s)
- Wioletta Brankiewicz-Kopcinska
- Department of Pharmaceutical Technology and Biochemistry, Gdansk University of Technology, G. Narutowicza St 11/12, 80-233 Gdansk, Poland; Department of Medical Genetics, Institute of Clinical Medicine, University of Oslo, Kirkeveien 166, 0450 Oslo, Norway.
| | - Anoop Kallingal
- Department of Pharmaceutical Technology and Biochemistry, Gdansk University of Technology, G. Narutowicza St 11/12, 80-233 Gdansk, Poland
| | - Radoslaw Krzemieniecki
- Department of Pharmaceutical Technology and Biochemistry, Gdansk University of Technology, G. Narutowicza St 11/12, 80-233 Gdansk, Poland
| | - Maciej Baginski
- Department of Pharmaceutical Technology and Biochemistry, Gdansk University of Technology, G. Narutowicza St 11/12, 80-233 Gdansk, Poland.
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2
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Telomere Status of Advanced Non-Small-Cell Lung Cancer Offers a Novel Promising Prognostic and Predictive Biomarker. Cancers (Basel) 2022; 15:cancers15010290. [PMID: 36612286 PMCID: PMC9818321 DOI: 10.3390/cancers15010290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/18/2022] [Accepted: 12/19/2022] [Indexed: 01/04/2023] Open
Abstract
Telomere length appears to correlate with survival in early non-small-cell lung cancer (NSCLC), but the prognostic impact of telomere status in advanced NSCLC remains undetermined. Our purpose was to evaluate telomere parameters as prognostic and predictive biomarkers in advanced NSCLC. In 79 biopsies obtained before treatment, we analyzed the telomere length and expression of TERT and shelterin complex genes (TRF1, TRF2, POT1, TPP1, RAP1, and TIN2), using quantitative PCR. Non-responders to first-line chemotherapy were characterized by shorter telomeres and low RAP1 expression (p = 0.0035 and p = 0.0069), and tended to show higher TERT levels (p = 0.058). In multivariate analysis, short telomeres were associated with reduced event-free (EFS, p = 0.0023) and overall survival (OS, p = 0.00041). TERT and TRF2 overexpression correlated with poor EFS (p = 0.0069 and p = 0.00041) and OS (p = 0.0051 and p = 0.007). Low RAP1 and TIN2 expression-levels were linked to reduced EFS (p = 0.00032 and p = 0.0069) and OS (p = 0.000051 and p = 0.02). Short telomeres were also associated with decreased survival after nivolumab therapy (p = 0.097). Evaluation of telomere status in advanced NSCLC emerges as a useful biomarker that allows for the selection of patient groups with different clinical evolutions, to establish personalized treatment.
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3
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Niveta JPS, Kumar MA, Parvathi VD. Telomere attrition and inflammation: the chicken and the egg story. EGYPTIAN JOURNAL OF MEDICAL HUMAN GENETICS 2022. [DOI: 10.1186/s43042-022-00335-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
AbstractThe challenge to improve human life span has progressed with the advent of health care services and technologies. This improvement poses a new challenge of an associated wave of diseases and pathologies that have not been observed or experienced. This has led to rise in geriatric population who are currently facing health challenges that needs to be addressed by the research community. This review focuses primarily on two mechanisms that have contributed to aging and associated pathologies: telomere attrition and inflammatory insults. A strong interplay appears to exist between telomere attrition and inflammation, and this could be the basis of many pathologies associated with increasing age. This creates a scientific dilemma as to what comes first: telomere attrition or inflammation. This review will enthuse the reader to the underlying molecules and mechanisms associated with telomere attrition and inflammation and their contribution to aging.
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4
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Pan-cancer analysis reveals that CTC1-STN1-TEN1 (CST) complex may have a key position in oncology. Cancer Genet 2022; 262-263:80-90. [DOI: 10.1016/j.cancergen.2022.01.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 01/07/2022] [Accepted: 01/30/2022] [Indexed: 12/14/2022]
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5
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Telomeres and Cancer. Life (Basel) 2021; 11:life11121405. [PMID: 34947936 PMCID: PMC8704776 DOI: 10.3390/life11121405] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 12/01/2021] [Accepted: 12/06/2021] [Indexed: 12/18/2022] Open
Abstract
Telomeres cap the ends of eukaryotic chromosomes and are indispensable chromatin structures for genome protection and replication. Telomere length maintenance has been attributed to several functional modulators, including telomerase, the shelterin complex, and the CST complex, synergizing with DNA replication, repair, and the RNA metabolism pathway components. As dysfunctional telomere maintenance and telomerase activation are associated with several human diseases, including cancer, the molecular mechanisms behind telomere length regulation and protection need particular emphasis. Cancer cells exhibit telomerase activation, enabling replicative immortality. Telomerase reverse transcriptase (TERT) activation is involved in cancer development through diverse activities other than mediating telomere elongation. This review describes the telomere functions, the role of functional modulators, the implications in cancer development, and the future therapeutic opportunities.
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6
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Dos Santos GA, Viana NI, Pimenta R, de Camargo JA, T Reis S, Moreira Leite KR, Srougi M. Telomeric zinc-finger associated protein (TZAP) in cancer biology: friend or foe? MOLECULAR BIOLOGY RESEARCH COMMUNICATIONS 2021; 10:121-129. [PMID: 34476265 DOI: 10.22099/mbrc.2021.40106.1607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 09/30/2022]
Abstract
The new identified protein telomeric zinc-finger associated protein (TZAP) is a negative regulator of telomere length. Since telomere length and telomere maintenance mechanisms are essential to cancer progression, TZAP is considered a new player in cancer biology. Here we aimed to analyze TZAP using the Cancer Genome Atlas data in a Pan-Cancer approach. We gathering data from TCGA Pan-Cancer studies utilizing cBioPortal, GEPIA and UALCAN. In total we analyzed 33 types of cancer (n=9664) and their respective controls (n=711). TZAP is transcribed in all cancers but less than 5% of all tumors show any somatic changes. TZAP was downregulated in kidney chromophobe carcinoma, and upregulated in esophageal cancer, head and neck squamous cell carcinomas, kidney renal clear cell carcinoma and in liver hepatocellular carcinoma. Globally, TZAP expression is related to favorable prognosis, associated to better overall and disease-free survival. Looking to specific tumors, TZAP expression has a dual behavior. Its downregulation is associated with poor prognosis in cervical squamous cell carcinoma, in kidney renal clear cell carcinoma, kidney papillary cell carcinoma, lung adenocarcinoma and pancreas adenocarcinoma. On the contrary, in adrenocortical carcinoma, colon and rectal cancer, brain lower grade glioma and prostate adenocarcinoma the upregulation of TZAP is related with poor prognosis. TZAP expression has a positive correlation with TRF1 and TRF2 in normal tissue but not in cancer. Our analyses indicate that TZAP has an important role in oncology and may be considered as a potential biomarker.
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Affiliation(s)
- Gabriel Arantes Dos Santos
- Urology Department, Laboratory of Medical Investigation (LIM55), Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, Brazil.,D'Or Institute for Research and Education (IDOR), Sao Paulo, Brazil
| | - Nayara Izabel Viana
- Urology Department, Laboratory of Medical Investigation (LIM55), Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, Brazil.,Minas Gerais State University (UEMG), Passos, Minas Gerais, Brazil
| | - Ruan Pimenta
- Urology Department, Laboratory of Medical Investigation (LIM55), Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, Brazil.,D'Or Institute for Research and Education (IDOR), Sao Paulo, Brazil
| | - Juliana Alves de Camargo
- Urology Department, Laboratory of Medical Investigation (LIM55), Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
| | - Sabrina T Reis
- Urology Department, Laboratory of Medical Investigation (LIM55), Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, Brazil.,Minas Gerais State University (UEMG), Passos, Minas Gerais, Brazil.,Athens University Center (UniAtenas), Passos, Minas Gerais, Brazil
| | - Katia Ramos Moreira Leite
- Urology Department, Laboratory of Medical Investigation (LIM55), Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
| | - Miguel Srougi
- Urology Department, Laboratory of Medical Investigation (LIM55), Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, Brazil.,D'Or Institute for Research and Education (IDOR), Sao Paulo, Brazil
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7
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Khodadadi E, Mir SM, Memar MY, Sadeghi H, Kashiri M, Faeghiniya M, Jamalpoor Z, Sheikh Arabi M. Shelterin complex at telomeres: Roles in cancers. GENE REPORTS 2021. [DOI: 10.1016/j.genrep.2021.101174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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8
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Habib I, Khan S, Mohammad T, Hussain A, Alajmi MF, Rehman T, Anjum F, Hassan MI. Impact of non-synonymous mutations on the structure and function of telomeric repeat binding factor 1. J Biomol Struct Dyn 2021; 40:9053-9066. [PMID: 33982644 DOI: 10.1080/07391102.2021.1922313] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Telomeric repeat binding factor 1 (TRF1) is one of the major components of the shelterin complex. It directly binds to the telomere and controls its function by regulating the telomerase acting on it. Several variations are reported in the TRF1 gene; some are associated with variety of diseases. Here, we have studied the structural and functional significance of these variations in the TRFH domain of TRF1. We have used cutting-edge computational methods such as SIFT, PolyPhen-2, PROVEAN, Mutation Assessor, mCSM, SDM, STRUM, MAESTRO, and DUET to predict the effects of 124 mutations in the TRFH domain of TRF1. Out of 124 mutations, we have identified 12 deleterious mutations with high confidence based on their prediction. To see the impact of the finally selected mutations on the structure and stability of TRF1, all-atom molecular dynamics (MD) simulations on TRF1-Wild type (WT), L79R and P150R mutants for 200 ns were carried out. A significant conformational change in the structure of the P150R mutant was observed. Our integrated computational study provides a comprehensive understanding of structural changes in TRF1 incurred due to the mutations and subsequent function, leading to the progression of many diseases.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Insan Habib
- Department of Computer Science, Jamia Millia Islamia, New Delhi, India
| | - Shama Khan
- Drug Discovery and Development Centre (H3D), University of Cape Town, Rondebosch, South Africa
| | - Taj Mohammad
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, India
| | - Afzal Hussain
- Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Mohamed F Alajmi
- Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Tabish Rehman
- Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Farah Anjum
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Taif University, Taif, Saudi Arabia
| | - Md Imtaiyaz Hassan
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, India
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9
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MiR-185 targets POT1 to induce telomere dysfunction and cellular senescence. Aging (Albany NY) 2020; 12:14791-14807. [PMID: 32687062 PMCID: PMC7425516 DOI: 10.18632/aging.103541] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Accepted: 06/01/2020] [Indexed: 12/20/2022]
Abstract
Protection of telomere 1 (POT1), the telomeric single-stranded DNA (ssDNA)-binding protein in the shelterin complex, has been implicated in the DNA damage response, tumorigenesis and aging. Telomere dysfunction induced by telomere deprotection could accelerate cellular senescence in primary human cells. While previous work demonstrated the biological mechanism of POT1 in aging and cancer, how POT1 is posttranscriptionally regulated remains largely unknown. To better understand the POT1 regulatory axis, we performed bioinformatic prediction, and selected candidates were further confirmed by dual-luciferase reporter assay. Collectively, our results revealed that miR-185 can significantly reduce POT1 mRNA and protein levels by directly targeting the POT1 3’-untranslated region (3’-UTR). Overexpression of miR-185 increased telomere dysfunction-induced foci (TIF) signals in both cancer cells and primary human fibroblasts. Elevated miR-185 led to telomere elongation in the telomerase-positive cell line HTC75, which was phenotypically consistent with POT1 knocking down. Moreover, miR-185 accelerated the replicative senescence process in primary human fibroblasts in a POT1-dependent manner. Interestingly, increased serum miR-185 could represent a potential aging-related biomarker. Taken together, our findings reveal miR-185 as a novel aging-related miRNA that targets POT1 and provide insight into the telomere and senescence regulatory network at both the intracellular and extracellular levels.
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10
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Aramburu T, Plucinsky S, Skordalakes E. POT1-TPP1 telomere length regulation and disease. Comput Struct Biotechnol J 2020; 18:1939-1946. [PMID: 32774788 PMCID: PMC7385035 DOI: 10.1016/j.csbj.2020.06.040] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 06/24/2020] [Accepted: 06/27/2020] [Indexed: 12/27/2022] Open
Abstract
Telomeres are DNA repeats at the ends of linear chromosomes and are replicated by telomerase, a ribonucleoprotein reverse transcriptase. Telomere length regulation and chromosome end capping are essential for genome stability and are mediated primarily by the shelterin and CST complexes. POT1-TPP1, a subunit of shelterin, binds the telomeric overhang, suppresses ATR-dependent DNA damage response, and recruits telomerase to telomeres for DNA replication. POT1 localization to telomeres and chromosome end protection requires its interaction with TPP1. Therefore, the POT1-TPP1 complex is critical to telomere maintenance and full telomerase processivity. The aim of this mini-review is to summarize recent POT1-TPP1 structural studies and discuss how the complex contributes to telomere length regulation. In addition, we review how disruption of POT1-TPP1 function leads to human disease.
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Key Words
- ATM, Ataxia Telangiectasia Mutated protein
- ATR, Ataxia Telangiectasia and Rad3-related Protein
- CST, CTC1, Stn1 and Ten1
- CTC1, Conserved Telomere Capping Protein 1
- POT1
- POT1, Protection of telomere 1
- RAP1, Repressor/Activator Protein 1
- RPA, Replication Protein A
- SMCHD1, Structural Maintenance Of Chromosomes Flexible Hinge Domain Containing 1
- Shelterin
- Stn1, Suppressor of Cdc Thirteen
- TERC, Telomerase RNA
- TERT, Telomerase Reverse Transcriptase
- TIN2, TRF1- and TRF2-Interacting Nuclear Protein 2
- TPP1
- TPP1 also known as ACD, Adrenocortical Dysplasia Protein Homolog
- TRF1, Telomere Repeat binding Factor 1
- TRF2, Telomere Repeat binding Factor 2
- TSPYL5, Testis-specific Y-encoded-like protein 5
- Telomerase
- Telomeres
- Ten1, Telomere Length Regulation Protein
- USP7, ubiquitin-specific-processing protease 7
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11
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Mir SM, Samavarchi Tehrani S, Goodarzi G, Jamalpoor Z, Asadi J, Khelghati N, Qujeq D, Maniati M. Shelterin Complex at Telomeres: Implications in Ageing. Clin Interv Aging 2020; 15:827-839. [PMID: 32581523 PMCID: PMC7276337 DOI: 10.2147/cia.s256425] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 05/18/2020] [Indexed: 12/16/2022] Open
Abstract
Different factors influence the development and control of ageing. It is well known that progressive telomere shorting is one of the molecular mechanisms underlying ageing. The shelterin complex consists of six telomere-specific proteins which are involved in the protection of chromosome ends. More particularly, this vital complex protects the telomeres from degradation, prevents from activation of unwanted repair systems, regulates the activity of telomerase, and has a crucial role in cellular senescent and ageing-related pathologies. This review explores the organization and function of telomeric DNA along with the mechanism of telomeres during ageing, followed by a discussion of the critical role of shelterin components and their changes during ageing.
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Affiliation(s)
- Seyed Mostafa Mir
- Trauma Research Center, AJA University of Medical Sciences, Tehran, Iran.,Student Research Committee, Babol University of Medical Sciences, Babol, Iran.,Cellular and Molecular Biology Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran
| | - Sadra Samavarchi Tehrani
- Department of Clinical Biochemistry, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.,Student Scientific Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Golnaz Goodarzi
- Department of Clinical Biochemistry, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.,Student Scientific Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Zahra Jamalpoor
- Trauma Research Center, AJA University of Medical Sciences, Tehran, Iran
| | - Jahanbakhsh Asadi
- Metabolic Disorders Research Center, Golestan University of Medical Sciences, Gorgan, Iran
| | - Nafiseh Khelghati
- Department of Clinical Biochemistry, School of Medicine, Urmia University of Medical Sciences, Urmia, Iran
| | - Durdi Qujeq
- Student Research Committee, Babol University of Medical Sciences, Babol, Iran.,Cellular and Molecular Biology Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran
| | - Mahmood Maniati
- School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
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12
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Structural Features of Nucleoprotein CST/Shelterin Complex Involved in the Telomere Maintenance and Its Association with Disease Mutations. Cells 2020; 9:cells9020359. [PMID: 32033110 PMCID: PMC7072152 DOI: 10.3390/cells9020359] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 01/23/2020] [Accepted: 01/24/2020] [Indexed: 12/29/2022] Open
Abstract
Telomere comprises the ends of eukaryotic linear chromosomes and is composed of G-rich (TTAGGG) tandem repeats which play an important role in maintaining genome stability, premature aging and onsets of many diseases. Majority of the telomere are replicated by conventional DNA replication, and only the last bit of the lagging strand is synthesized by telomerase (a reverse transcriptase). In addition to replication, telomere maintenance is principally carried out by two key complexes known as shelterin (TRF1, TRF2, TIN2, RAP1, POT1, and TPP1) and CST (CDC13/CTC1, STN1, and TEN1). Shelterin protects the telomere from DNA damage response (DDR) and regulates telomere length by telomerase; while, CST govern the extension of telomere by telomerase and C strand fill-in synthesis. We have investigated both structural and biochemical features of shelterin and CST complexes to get a clear understanding of their importance in the telomere maintenance. Further, we have analyzed ~115 clinically important mutations in both of the complexes. Association of such mutations with specific cellular fault unveils the importance of shelterin and CST complexes in the maintenance of genome stability. A possibility of targeting shelterin and CST by small molecule inhibitors is further investigated towards the therapeutic management of associated diseases. Overall, this review provides a possible direction to understand the mechanisms of telomere borne diseases, and their therapeutic intervention.
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Bhattacharya P, Dhanyamraju PK, Sarmah A, Jay MP, Jose CM, Dbritto S, Mallavarapu S, Patel TN. Mutational profiling of POT1 gene and its interaction with TPP1 in cancer- A computational approach. INFORMATICS IN MEDICINE UNLOCKED 2020. [DOI: 10.1016/j.imu.2020.100389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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14
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Ko E, Kim JS, Bae JW, Kim J, Park SG, Jung G. SERPINA3 is a key modulator of HNRNP-K transcriptional activity against oxidative stress in HCC. Redox Biol 2019; 24:101217. [PMID: 31121493 PMCID: PMC6529774 DOI: 10.1016/j.redox.2019.101217] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 04/26/2019] [Accepted: 05/10/2019] [Indexed: 02/07/2023] Open
Abstract
Most studies about serpin peptidase inhibitor, clade A member 3 (SERPINA3) has been limited to its inhibitory functions and mechanisms. Herein, we report a novel role of SERPINA3 in transcriptional regulation of HCC progression-related genes. Among 19 selected genes through HCC cell isolation system based on telomere length, microarray analyses, and cell-based studies, SERPINA3 was the strongest determinant of increases in telomere length, HCC cell proliferation, survival, migration, and invasion. We also found that SERPINA3 strongly interacted with heterogeneous nuclear ribonucleoprotein K (HNRNP-K) under H2O2 exposure, and the oxidation-elicited SERPINA3-HNRNP-K complex enhanced the promoter activities and transcript levels of a telomere-relating gene (POT1) and HCC-promoting genes (UHRF1 and HIST2H2BE). Intriguingly, the inhibition of SERPINA3 oxidation rendered the transcriptional activity of the SERPINA3-HNRNP-K complex suppressed. Moreover, the co-immunoprecipitated HNRNP-K with SERPINA3 quantitatively correlated with not only the level of SERPINA3 oxidation but also the level of POT1, UHRF1, and HIST2H2BE transcripts and telomere length in HCC tissues. Therefore, the upregulated transcriptional activity of HNRNP-K mediated by SERPINA3 promotes HCC cell survival and proliferation and could be an indicator of poor prognosis for HCC patients. SERPINA3-HNRNP-K complex promotes HCC survival and proliferation. Oxidation of SERPINA3 accentuated the role of complex on target regulatory DNA. Blockade of the SERPINA3-HNRNP-K complex could be valuable in HCC therapy.
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Affiliation(s)
- Eunkyong Ko
- Department of Biological Sciences, College of Natural Sciences, Seoul National University, 599 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Jong-Seo Kim
- Department of Biological Sciences, College of Natural Sciences, Seoul National University, 599 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea; Center for RNA Research, Institute of Basic Science (IBS), Seoul, 08826, Republic of Korea
| | - Jong Woo Bae
- Department of Biological Sciences, College of Natural Sciences, Seoul National University, 599 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea; Center for RNA Research, Institute of Basic Science (IBS), Seoul, 08826, Republic of Korea
| | - Jeesoo Kim
- Department of Biological Sciences, College of Natural Sciences, Seoul National University, 599 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea; Center for RNA Research, Institute of Basic Science (IBS), Seoul, 08826, Republic of Korea
| | - Sung-Gyoo Park
- School of Life Sciences, Gwangju Institute of Science and Technology (GIST), Gwangju, 61005, Republic of Korea
| | - Guhung Jung
- Department of Biological Sciences, College of Natural Sciences, Seoul National University, 599 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea.
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15
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Polito F, Cucinotta M, Abbritti RV, Brogna A, Pergolizzi S, Tomasello C, Barresi V, Angileri FF, Di Giorgio R, Conti A, La Torre D, Germanò A, Aguennouz M. Silencing of telomere-binding protein adrenocortical dysplasia (ACD) homolog enhances radiosensitivity in glioblastoma cells. Transl Res 2018; 202:99-108. [PMID: 30080989 DOI: 10.1016/j.trsl.2018.07.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 06/23/2018] [Accepted: 07/10/2018] [Indexed: 11/30/2022]
Abstract
Adrenocortical dysplasia (ACD) is a shelterin protein involved in the maintenance of telomere length and in cancer radioresistance. This study investigated the expression profile of ACD in human gliomas and its role in radioresistance of glioma cells. The expression of ACD was analyzed in 62 different grades of glioma tissues and correlated with prognosis. A radioresistant cell line was generated from U87MG cells. For mechanistic studies, ACD was inhibited by small interfering RNA-targeting ACD and the effect on cell radioresistance, telomerase activity, cyclinD1, caspase-3, hTERT, and BIRC1 was evaluated. Clonogenic assay was performed after irradiation, to investigate the effect of ACD silencing on radiation sensitivity. ACD expression appeared strongly upregulated in higher grade gliomas, and its expression was significantly correlated to grading and poor prognosis. In glioma cell lines, ACD expression pattern was similar to those observed in glioma tissues. In irradiated cells, ACD expression was increased in an ionizing radiation dose-dependent manner. A higher expression of ACD was observed in the radioresistant clones than parental cells. Silencing of ACD led to the enhanced radiation sensitivity, decreased telomerase activity and cyclin D1 expression, reduced expression of BIRC1, and finally to the upregulation of caspase-3. This study represents the first report, which demonstrated the expression pattern of ACD in gliomas and its prognostic value. Our results suggested that ACD is involved in glioblastoma radioresistance, likely through the modulation of telomerase activity, proliferation, and apoptosis. ACD might represent a potential molecular biomarker and a novel therapeutic target in glioblastoma.
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Affiliation(s)
- Francesca Polito
- Department of Biomedical, Dental Sciences and of Morphological and Functional Images, University of Messina, Italy
| | - Maria Cucinotta
- Department of Clinical and Experimental Medicine, University of Messina, Italy
| | - Rosaria V Abbritti
- Department of Biomedical, Dental Sciences and of Morphological and Functional Images, University of Messina, Italy
| | - Anna Brogna
- Department of Biomedical, Dental Sciences and of Morphological and Functional Images, University of Messina, Italy
| | - Stefano Pergolizzi
- Department of Biomedical, Dental Sciences and of Morphological and Functional Images, University of Messina, Italy
| | - Chiara Tomasello
- Department of Biomedical, Dental Sciences and of Morphological and Functional Images, University of Messina, Italy
| | | | - Flavio F Angileri
- Department of Biomedical, Dental Sciences and of Morphological and Functional Images, University of Messina, Italy
| | | | - Alfredo Conti
- Department of Biomedical, Dental Sciences and of Morphological and Functional Images, University of Messina, Italy
| | - Domenico La Torre
- Department of Biomedical, Dental Sciences and of Morphological and Functional Images, University of Messina, Italy
| | - Antonino Germanò
- Department of Biomedical, Dental Sciences and of Morphological and Functional Images, University of Messina, Italy
| | - M'hammed Aguennouz
- Department of Clinical and Experimental Medicine, University of Messina, Italy.
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16
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Ding M, Yang Y, Duan X, Wang S, Feng X, Wang T, Wang P, Liu S, Li L, Liu J, Tang L, Niu X, Zhang Y, Li G, Yao W, Cui L, Wang W. Association of genetic polymorphisms of telomere binding proteins with cholinesterase activity in omethoate-exposed workers. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 161:563-568. [PMID: 29929132 DOI: 10.1016/j.ecoenv.2018.06.036] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Revised: 06/01/2018] [Accepted: 06/12/2018] [Indexed: 06/08/2023]
Abstract
Omethoate, an organophosphorous pesticide, can cause a variety of health effects, especially the decrease of cholinesterase activity. The aim of this study is to explore the association of genetic polymorphisms of telomere binding proteins with cholinesterase activity in omethoate-exposed population. Cholinesterase activities in whole blood, red blood cell and plasma were detected using acetylthiocholine and dithio-bis-(nitrobenzoic acid) method; Genetic Genotyping of POT1 rs1034794, POT1 rs10250202, TERF1 rs3863242 and TERT rs2736098 were performed with PCR-RFLP. The cholinesterase activities of whole blood, red blood cells and plasma in exposure group are significantly lower than that of the control group (P < 0.001). Multivariate analysis indicates that exposure group (b = - 1.016, P < 0.001), agender (b = 0.365, P < 0.001), drinking (b = 0.271, P = 0.004) and TERF1rs3863242 (b = - 0.368, P = 0.016) had an impact on cholinesterase activities. The results suggest that individual carrying AG+GG genotypes in TERF1 gene rs3863242 polymorphism were susceptible to damage in cholinesterase induced by omethoate.
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Affiliation(s)
- Mingcui Ding
- Department of Occupational and Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, China
| | - Yongli Yang
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, China
| | - Xiaoran Duan
- Department of Occupational and Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, China
| | - Sihua Wang
- Department of Occupational Health, Henan Institute for Occupational Medicine, Zhengzhou, China
| | - Xiaolei Feng
- Department of Occupational and Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, China
| | - Tuanwei Wang
- Department of Occupational and Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, China
| | - Pengpeng Wang
- Department of Occupational and Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, China
| | - Suxiang Liu
- Department of Zhengzhou Institute of Occupational Health, Zhengzhou, China
| | - Lei Li
- Department of Zhengzhou Institute of Occupational Health, Zhengzhou, China
| | - Junling Liu
- Department of Zhengzhou Institute of Occupational Health, Zhengzhou, China
| | - Lixia Tang
- Department of Zhengzhou Institute of Occupational Health, Zhengzhou, China
| | - Xinhua Niu
- Department of Zhengzhou Institute of Occupational Health, Zhengzhou, China
| | - Yuhong Zhang
- Department of Zhengzhou Institute of Occupational Health, Zhengzhou, China
| | - Guoyu Li
- Department of Zhengzhou Institute of Occupational Health, Zhengzhou, China
| | - Wu Yao
- Department of Occupational and Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, China
| | - Liuxin Cui
- Department of Occupational and Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, China
| | - Wei Wang
- Department of Occupational and Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, China.
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17
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Kosebent EG, Uysal F, Ozturk S. Telomere length and telomerase activity during folliculogenesis in mammals. J Reprod Dev 2018; 64:477-484. [PMID: 30270279 PMCID: PMC6305847 DOI: 10.1262/jrd.2018-076] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Telomeres are repetitive non-coding DNA sequences located at the ends of chromosomes in eukaryotic cells. Their most important function is to protect chromosome ends from being recognized
as DNA damage. They are also implicated in meiosis and synapse formation. The length of telomeres inevitably shortens at the end of each round of DNA replication and, also, as a consequence
of the exposure to oxidative stress and/or genotoxic agents. The enzyme telomerase contributes to telomere lengthening. It has been reported that telomerase is exclusively expressed in germ
cells, granulosa cells, early embryos, stem cells, and various types of cancerous cells. Granulosa cells undergo many mitotic divisions and either granulosa cells or oocytes are exposed to a
variety of genotoxic agents throughout folliculogenesis; thus, telomerase plays an important role in the maintenance of telomere length. In this review article, we have comprehensively
evaluated the studies focusing on the regulation of telomerase expression and activity, as well as telomere length, during folliculogenesis from primordial to antral follicles, in several
mammalian species including mice, bovines, and humans. Also, the possible relationships between female infertility caused by follicular development defects and alterations in the telomeres
and/or telomerase activity are discussed.
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Affiliation(s)
- Esra Gozde Kosebent
- Department of Histology and Embryology, Akdeniz University School of Medicine, Antalya 07070, Turkey
| | - Fatma Uysal
- Department of Histology and Embryology, Ankara University School of Medicine, Ankara, Turkey
| | - Saffet Ozturk
- Department of Histology and Embryology, Akdeniz University School of Medicine, Antalya 07070, Turkey
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18
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da Silva Neto Trajano LA, Trajano ETL, da Silva Sergio LP, Teixeira AF, Mencalha AL, Stumbo AC, de Souza da Fonseca A. Photobiomodulation effects on mRNA levels from genomic and chromosome stabilization genes in injured muscle. Lasers Med Sci 2018; 33:1513-1519. [DOI: 10.1007/s10103-018-2510-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Accepted: 04/17/2018] [Indexed: 01/09/2023]
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19
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Panero J, Alves-Paiva RM, Roisman A, Santana-Lemos BA, Falcão RP, Oliveira G, Martins D, Stanganelli C, Slavutsky I, Calado RT. Acquired TERT promoter mutations stimulate TERT transcription in mantle cell lymphoma. Am J Hematol 2016; 91:481-5. [PMID: 26852175 DOI: 10.1002/ajh.24324] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2015] [Revised: 01/25/2016] [Accepted: 02/01/2016] [Indexed: 01/07/2023]
Abstract
Mantle cell lymphoma (MCL) is an aggressive lymphoid neoplasm with poor prognosis. Acquired telomerase reverse transcriptase gene promoter (TERTp) mutations are among the most frequent somatic non-coding mutations in cancers. In this study, the prevalence of TERTp mutations in 24 MCL and 21 other lymphoid neoplasias (oLN) was investigated. Eight MCL samples (33%) carried TERTp mutations, two homozygous and six heterozygous (seven C228T and one C250T), which directly correlated with higher TERT transcription, mitochondrial DNA copy number, and IGHV mutational status in MCL neoplastic cells. TERTp mutations were not found in oLN. TERTp mutations correlated with more lymphoma proliferation and tumor burden, as suggested by the higher number of lymphoma cells circulating in peripheral blood, and tended to associate with longer MCL telomeres, especially in homozygous mutants, although not statistically significant. Telomere-biology genes were overexpressed in MCL cells in comparison to healthy lymphocytes, but were not influenced by mutation status. The findings described for the first time that acquired TERTp mutations are common in MCL but not in other lymphoid neoplasms. It was also demonstrated that TERTp mutations are associated with higher TERT mRNA expression in MCL cells in vivo and higher tumor burden, suggesting these mutations as a driver event in MCL development and progression.
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Affiliation(s)
- Julieta Panero
- Laboratorio de Genética de Neoplasias Linfoides, Instituto de Medicina Experimental; CONICET-Academia Nacional de Medicina; Buenos Aires C1425AUM Argentina
| | - Raquel M. Alves-Paiva
- Divisão De Hematologia, Departamento de Clínica Médica; Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo; Ribeirão Preto SP 14048-900 Brazil
- Centro de Terapia Celular; Fundação de Amparo À Pesquisa do Estado de São Paulo (FAPESP); Ribeirão Preto SP 14048-900 Brazil
| | - Alejandro Roisman
- Laboratorio de Genética de Neoplasias Linfoides, Instituto de Medicina Experimental; CONICET-Academia Nacional de Medicina; Buenos Aires C1425AUM Argentina
| | - Barbara A. Santana-Lemos
- Divisão De Hematologia, Departamento de Clínica Médica; Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo; Ribeirão Preto SP 14048-900 Brazil
- Centro de Terapia Celular; Fundação de Amparo À Pesquisa do Estado de São Paulo (FAPESP); Ribeirão Preto SP 14048-900 Brazil
| | - Roberto P. Falcão
- Divisão De Hematologia, Departamento de Clínica Médica; Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo; Ribeirão Preto SP 14048-900 Brazil
- Centro de Terapia Celular; Fundação de Amparo À Pesquisa do Estado de São Paulo (FAPESP); Ribeirão Preto SP 14048-900 Brazil
| | - Gustavo Oliveira
- Divisão De Hematologia, Departamento de Clínica Médica; Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo; Ribeirão Preto SP 14048-900 Brazil
| | - Diego Martins
- Divisão De Hematologia, Departamento de Clínica Médica; Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo; Ribeirão Preto SP 14048-900 Brazil
| | - Carmen Stanganelli
- División Patología Molecular, Instituto de Investigaciones Hematológicas; Academia Nacional de Medicina; Buenos Aires C1425AUM Argentina
| | - Irma Slavutsky
- Laboratorio de Genética de Neoplasias Linfoides, Instituto de Medicina Experimental; CONICET-Academia Nacional de Medicina; Buenos Aires C1425AUM Argentina
| | - Rodrigo T. Calado
- Divisão De Hematologia, Departamento de Clínica Médica; Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo; Ribeirão Preto SP 14048-900 Brazil
- Centro de Terapia Celular; Fundação de Amparo À Pesquisa do Estado de São Paulo (FAPESP); Ribeirão Preto SP 14048-900 Brazil
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20
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Calvete O, Martinez P, Garcia-Pavia P, Benitez-Buelga C, Paumard-Hernández B, Fernandez V, Dominguez F, Salas C, Romero-Laorden N, Garcia-Donas J, Carrillo J, Perona R, Triviño JC, Andrés R, Cano JM, Rivera B, Alonso-Pulpon L, Setien F, Esteller M, Rodriguez-Perales S, Bougeard G, Frebourg T, Urioste M, Blasco MA, Benítez J. A mutation in the POT1 gene is responsible for cardiac angiosarcoma in TP53-negative Li-Fraumeni-like families. Nat Commun 2015; 6:8383. [PMID: 26403419 DOI: 10.1038/ncomms9383] [Citation(s) in RCA: 110] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2015] [Accepted: 08/14/2015] [Indexed: 12/30/2022] Open
Abstract
Cardiac angiosarcoma (CAS) is a rare malignant tumour whose genetic basis is unknown. Here we show, by whole-exome sequencing of a TP53-negative Li-Fraumeni-like (LFL) family including CAS cases, that a missense variant (p.R117C) in POT1 (protection of telomeres 1) gene is responsible for CAS. The same gene alteration is found in two other LFL families with CAS, supporting the causal effect of the identified mutation. We extend the analysis to TP53-negative LFL families with no CAS and find the same mutation in a breast AS family. The mutation is recently found once in 121,324 studied alleles in ExAC server but it is not described in any other database or found in 1,520 Spanish controls. In silico structural analysis suggests how the mutation disrupts POT1 structure. Functional and in vitro studies demonstrate that carriers of the mutation show reduced telomere-bound POT1 levels, abnormally long telomeres and increased telomere fragility.
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Affiliation(s)
- Oriol Calvete
- Human Genetics Group, Spanish National Cancer Research Center (CNIO), Melchor Fernandez Almagro 3, Madrid 28029, Spain.,Center for Biomedical Network Research on Rare Diseases (CIBERER), Madrid 28029, Spain
| | - Paula Martinez
- Telomeres and Telomerase Group, Spanish National Cancer Research Center (CNIO), Madrid 28029, Spain
| | - Pablo Garcia-Pavia
- Department of Cardiology. Hospital Universitario Puerta de Hierro, Mahadahonda, Madrid 28222, Spain.,Department of Cardiovascular Development and Repair, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid 28029, Spain
| | - Carlos Benitez-Buelga
- Human Genetics Group, Spanish National Cancer Research Center (CNIO), Melchor Fernandez Almagro 3, Madrid 28029, Spain
| | - Beatriz Paumard-Hernández
- Human Genetics Group, Spanish National Cancer Research Center (CNIO), Melchor Fernandez Almagro 3, Madrid 28029, Spain
| | - Victoria Fernandez
- Human Genetics Group, Spanish National Cancer Research Center (CNIO), Melchor Fernandez Almagro 3, Madrid 28029, Spain
| | - Fernando Dominguez
- Department of Cardiology. Hospital Universitario Puerta de Hierro, Mahadahonda, Madrid 28222, Spain
| | - Clara Salas
- Department of Pathology. Hospital Universitario Puerta de Hierro Majadahonda, Madrid 28222, Spain
| | - Nuria Romero-Laorden
- Oncology Department, Clara Campal Comprehensive Cancer Center, Sanchinarro, Madrid 28050, Spain
| | - Jesus Garcia-Donas
- Oncology Department, Clara Campal Comprehensive Cancer Center, Sanchinarro, Madrid 28050, Spain
| | - Jaime Carrillo
- Department of Experimental Models of Human Disease. Instituto Investigaciones Biomédicas (CSIC/UAM), Madrid 28029, Spain
| | - Rosario Perona
- Center for Biomedical Network Research on Rare Diseases (CIBERER), Madrid 28029, Spain.,Department of Experimental Models of Human Disease. Instituto Investigaciones Biomédicas (CSIC/UAM), Madrid 28029, Spain
| | | | - Raquel Andrés
- Medical Oncology Service, Hospital Universitario Lozano Blesa, Zaragoza 50009, Spain
| | - Juana María Cano
- Medical Oncology Service, Hospital General de Ciudad Real, Ciudad Real 13005, Spain
| | - Bárbara Rivera
- Familial Cancer Clinical Unit, Spanish National Cancer Research Center (CNIO), Madrid 28029, Spain
| | - Luis Alonso-Pulpon
- Department of Cardiology. Hospital Universitario Puerta de Hierro, Mahadahonda, Madrid 28222, Spain
| | - Fernando Setien
- Cancer Epigenetics and Biology Program (PEBC), Bellvitge Biomedical Research Institute (IDIBELL), Barcelona 08908, Spain
| | - Manel Esteller
- Cancer Epigenetics and Biology Program (PEBC), Bellvitge Biomedical Research Institute (IDIBELL), Barcelona 08908, Spain.,Department of Physiological Sciences II, School of Medicine, University of Barcelona, Barcelona 08007, Spain.,Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona 08010, Spain
| | | | - Gaelle Bougeard
- Genetics Department, Rouen University Hospital, Rouen 76000, France
| | - Tierry Frebourg
- Genetics Department, Rouen University Hospital, Rouen 76000, France
| | - Miguel Urioste
- Center for Biomedical Network Research on Rare Diseases (CIBERER), Madrid 28029, Spain.,Familial Cancer Clinical Unit, Spanish National Cancer Research Center (CNIO), Madrid 28029, Spain
| | - Maria A Blasco
- Telomeres and Telomerase Group, Spanish National Cancer Research Center (CNIO), Madrid 28029, Spain
| | - Javier Benítez
- Human Genetics Group, Spanish National Cancer Research Center (CNIO), Melchor Fernandez Almagro 3, Madrid 28029, Spain.,Center for Biomedical Network Research on Rare Diseases (CIBERER), Madrid 28029, Spain
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