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Yadegari F, Farahmand L, Esmaeili R, Zarinfam S, Majidzadeh-A K. Inter-BRCT linker is probably the most intolerant region of the BRCA1 BRCT domain. J Biomol Struct Dyn 2024; 42:5734-5746. [PMID: 37948190 DOI: 10.1080/07391102.2023.2274517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Accepted: 06/15/2023] [Indexed: 11/12/2023]
Abstract
Pathogenic mutations in BRCA1 are associated with an increased risk of hereditary breast, ovarian, and some other cancers; however, the clinical significance of many mutations in this gene remains unknown (Variants of Unknown Significance/VUS). Since mutations in intolerant regions of a protein lead to dysfunction and pathogenicity, identifying these regions helps to predict the clinical importance of VUSs. This study aimed to identify intolerant regions of BRCA1 and understand the possible root of this susceptibility. Intolerant regions appear to carry more pathogenic mutations than expected due to their lower tolerance to missense variations. Therefore, we hypothesized that among the BRCA1 regions, the higher the mutation density, the greater the intolerance. Thus, pathogenic mutation density and regional intolerance scores were calculated to identify BRCA1-intolerant regions. To investigate the pathogenic mechanisms of missense-intolerant regions in BRCA1, transcription activation (TA) experiments and molecular dynamics (MD) simulations were also performed. The results showed that the RING domain, followed by the BRCT domain, has the highest density of pathogenic mutations. In the BRCT domain, a higher density of pathogenic mutations was observed in the inter-BRCT linker. Additionally, scores generated by Missense Tolerance Ratio-3D (MTR3D) and the Missense Tolerance Ratio consensus (MTRX) showed that the inter-BRCT linker is more intolerant than other regions of the BRCT domain. The MD results showed that mutations in the inter-BRCT linker led to cancer susceptibility, likely due to disruption of the interaction between BRCA1 and phosphopeptides. TA laboratory assays further supported the importance of the inter-BRCT linker.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Fatemeh Yadegari
- Genetics Department, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran, Iran
| | - Leila Farahmand
- Recombinant Proteins Department, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran, Iran
| | - Rezvan Esmaeili
- Genetics Department, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran, Iran
| | - Shiva Zarinfam
- Genetics Department, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran, Iran
| | - Keivan Majidzadeh-A
- Genetics Department, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran, Iran
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2
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İnanir M, Uçar E, Tüzün B, Eruygur N, Ataş M, Akpulat HA. The pharmacological properties of Gypsophila eriocalyx: The endemic medicinal plant of northern central Turkey. Int J Biol Macromol 2024; 266:130943. [PMID: 38522690 DOI: 10.1016/j.ijbiomac.2024.130943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2024] [Revised: 03/13/2024] [Accepted: 03/14/2024] [Indexed: 03/26/2024]
Abstract
The aim of this study is to evaluate and compare the biological properties of different extracts (methanol, ethanol, and water) obtained from Gypsophila eriocalyx (G. eriocalyx), a medicinal plant traditionally used in Turkey. The components of different extracts were defined using the GC-MS method. The effects of G. eriocalyx extracts on cell proliferation, apoptosis, and cell cycle arrest in MDA-MB-231 breast cancer as well as in vitro antioxidant, enzyme inhibition, and antimicrobial activities were investigated. In accordance with the results obtained, although ethanol and methanol extracts of G. eriocalyx show higher antioxidant activity than G. eriocalyx water extract, enzyme inhibition activities of the extracts were not found to be significant compared to the reference drug. The methanol and ethanol extract of G. eriocalyx exhibited moderate antimicrobial activity against Staphylococcus aureus and methanol extract showed significant antimicrobial activity against Bacillus cereus. In addition, both extracts significantly inhibited cell viability in a dose-dependent manner in breast cancer cells. The cell growth inhibition by methanol and ethanol extracts induced S phase cell-cycle arrest and apoptosis in MDA-MB-231 cells. Lastly, in order to compare the activities of the chemicals found in Gypsophila eriocalyx plant extract, their activities against various proteins that are breast cancer protein (PDB ID:1A52 and 1JNX), antioxidant protein (PDB ID: 1HD2), AChE enzyme protein (PDB ID: 4M0E), BChE enzyme protein (PDB ID: 5NN0), and Escherichia coli protein (PDB ID: 4PRV)were compared. Then, ADME/T analysis calculations were made to examine the effects of molecules with high activity on human metabolism. Eventually, G. eriocalyx is thought to be a potent therapeutic herb that can be considered as an alternative and functional therapy for the management of diseases of a progressive nature related to oxidative damage such as infection, diabetes, cancer, and Alzheimer's disease.
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Affiliation(s)
- Merve İnanir
- Department of Pharmacology, Faculty of Pharmacy, Sivas Cumhuriyet University, Sivas, Turkey.
| | - Esra Uçar
- Department of Medicinal and Aromatic Plant, Vocational School, Sivas Cumhuriyet University, Sivas, Turkey
| | - Burak Tüzün
- Plant and Animal Production Department, Technical SciencesVocational School of Sivas, Sivas Cumhuriyet University, Sivas, Turkey.
| | - Nuraniye Eruygur
- Department of Pharmacognosy, Faculty of Pharmacy, Selçuk University, Konya, Turkey
| | - Mehmet Ataş
- Department of Microbiology, Faculty of Pharmacy, Sivas Cumhuriyet University, Sivas, Turkey
| | - Hüseyin Aşkın Akpulat
- Department of Biology, Faculty of Science,Sivas Cumhuriyet University, Sivas, Turkey
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3
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Stein RA, Mchaourab HS. Rosetta Energy Analysis of AlphaFold2 models: Point Mutations and Conformational Ensembles. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2023.09.05.556364. [PMID: 37732281 PMCID: PMC10508732 DOI: 10.1101/2023.09.05.556364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/22/2023]
Abstract
There has been an explosive growth in the applications of AlphaFold2, and other structure prediction platforms, to accurately predict protein structures from a multiple sequence alignment (MSA) for downstream structural analysis. However, two outstanding questions persist in the field regarding the robustness of AlphaFold2 predictions of the consequences of point mutations and the completeness of its prediction of protein conformational ensembles. We combined our previously developed method SPEACH_AF with model relaxation and energetic analysis with Rosetta to address these questions. SPEACH_AF introduces residue substitutions across the MSA and not just within the input sequence. With respect to conformational ensembles, we combined SPEACH_AF and a new MSA subsampling method, AF_cluster, and for a benchmarked set of proteins, we found that the energetics of the conformational ensembles generated by AlphaFold2 correspond to those of experimental structures and explored by standard molecular dynamic methods. With respect to point mutations, we compared the structural and energetic consequences of having the mutation(s) in the input sequence versus in the whole MSA (SPEACH_AF). Both methods yielded models different from the wild-type sequence, with more robust changes when the mutation(s) were in the whole MSA. While our findings demonstrate the robustness of AlphaFold2 in analyzing point mutations and exploring conformational ensembles, they highlight the need for multi parameter structural and energetic analyses of these models to generate experimentally testable hypotheses.
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Affiliation(s)
- Richard A Stein
- Department of Molecular Physiology and Biophysics and Center for Applied AI in Protein Dynamics Vanderbilt University
| | - Hassane S Mchaourab
- Department of Molecular Physiology and Biophysics and Center for Applied AI in Protein Dynamics Vanderbilt University
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4
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Mermer A, Tüzün B, Daştan SD, Koçyiğit ÜM, Çetin FN, Çevik Ö. Piperazin incorporated Schiff Base derivatives: Assessment of in vitro biological activities, metabolic enzyme inhibition properties, and molecular docking calculations. J Biochem Mol Toxicol 2023; 37:e23465. [PMID: 37462216 DOI: 10.1002/jbt.23465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 06/21/2023] [Accepted: 07/06/2023] [Indexed: 11/10/2023]
Abstract
The cytotoxic activities of the compounds were determined by the 3-(4,5-dimethylthiazolyl-2)-2,5-diphenyltetrazolium bromide (MTT) method in human breast cancer (MCF-7), human cervical cancer (HeLa), and mouse fibroblast (L929) cell lines. The compounds MAAS-5 and four modified the supercoiled tertiary structure of pBR322 plasmid DNA. MAAS-5 showed the highest cytotoxic activity in HeLa, MCF-7, and L929 cells with IC50 values of 16.76 ± 3.22, 28.83 ± 5.61, and 2.18 ± 1.22 µM, respectively. MAAS-3 was found to have almost the lowest cytotoxic activities with the IC50 values of 93.17 ± 9.28, 181.07 ± 11.54, and 16.86 ± 6.42 µM in HeLa, MCF-7, and L929 cells respectively at 24 h. Moreover, the antiepileptic potentials of these compounds were investigated in this study. To this end, the effect of newly synthesized Schiff base derivatives on the enzyme activities of carbonic anhydrase I and II isozymes (human carbonic anhydrase [hCA] I and hCA II) was evaluated spectrophotometrically. The target compounds demonstrated high inhibitory activities compared with standard inhibitors with Ki values in the range of 4.54 ± 0.86-15.46 ± 8.65 nM for hCA I (Ki value for standard inhibitor = 12.08 ± 2.00 nM), 1.09 ± 0.32-29.94 ± 0.82 nM for hCA II (Ki value for standard inhibitor = 18.22 ± 4.90 nM). Finally, the activities of the compounds were compared with the Gaussian programme in the B3lyp, HF, M062X base sets with 6-31++G (d,p) levels. In addition, the activities of five compounds against various breast cancer proteins and hCA I and II were compared with molecular docking calculations. Also, absorption, distribution, metabolism, excretion, and toxicity analysis was performed to investigate the possibility of using five compounds as drug candidates.
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Affiliation(s)
- Arif Mermer
- Experimental Medicine Application & Research Center, Validebağ Research Park, University of Health Sciences, Istanbul, Türkiye
- Department of Biotechnology, University of Health Sciences, Istanbul, Türkiye
| | - Burak Tüzün
- Plant and Animal Production Department, Technical Sciences Vocational School of Sivas, Sivas Cumhuriyet University, Sivas, Turkey
| | - Sevgi Durna Daştan
- Department of Biology, Faculty of Science, Sivas Cumhuriyet University, Sivas, Turkey
| | - Ümit M Koçyiğit
- Department of Basic Pharmaceutical Sciences, Sivas Cumhuriyet University, Sivas, Turkey
| | - Feyza Nur Çetin
- Department of Basic Pharmaceutical Sciences, Sivas Cumhuriyet University, Sivas, Turkey
| | - Özge Çevik
- Department of Biochemistry, Adnan Menderes University, Aydın, Turkey
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5
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Nepomuceno TC, Foo TK, Richardson ME, Ranola JMO, Weyandt J, Varga MJ, Alarcon A, Gutierrez D, von Wachenfeldt A, Eriksson D, Kim R, Armel S, Iversen E, Couch FJ, Borg Å, Xia B, Carvalho MA, Monteiro ANA. BRCA1 frameshift variants leading to extended incorrect protein C termini. HGG ADVANCES 2023; 4:100240. [PMID: 37718511 PMCID: PMC10558845 DOI: 10.1016/j.xhgg.2023.100240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 09/13/2023] [Accepted: 09/13/2023] [Indexed: 09/19/2023] Open
Abstract
Carriers of BRCA1 germline pathogenic variants are at substantially higher risk of developing breast and ovarian cancer than the general population. Accurate identification of at-risk individuals is crucial for risk stratification and the implementation of targeted preventive and therapeutic interventions. Despite significant progress in variant classification efforts, a sizable portion of reported BRCA1 variants remain as variants of uncertain clinical significance (VUSs). Variants leading to premature protein termination and loss of essential functional domains are typically classified as pathogenic. However, the impact of frameshift variants that result in an extended incorrect terminus is not clear. Using validated functional assays, we conducted a systematic functional assessment of 17 previously reported BRCA1 extended incorrect terminus variants (EITs) and concluded that 16 constitute loss-of-function variants. This suggests that most EITs are likely to be pathogenic. However, one variant, c.5578dup, displayed a protein expression level, affinity to known binding partners, and activity in transcription and homologous recombination assays comparable to the wild-type BRCA1 protein. Twenty-three additional carriers of c.5578dup were identified at a US clinical diagnostic lab and assessed using a family history likelihood model providing, in combination with the functional data, a likely benign interpretation. These results, consistent with family history data in the current study and available data from ClinVar, indicate that most, but not all, BRCA1 variants leading to an extended incorrect terminus constitute loss-of-function variants and underscore the need for comprehensive assessment of individual variants.
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Affiliation(s)
- Thales C Nepomuceno
- Department of Cancer Epidemiology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA; Divisão de Pesquisa Clínica, Instituto Nacional de Câncer, Rio de Janeiro 20230-130, Brazil
| | - Tzeh Keong Foo
- Rutgers Cancer Institute of New Jersey and Robert Wood Johnson Medical School, New Brunswick, NJ, USA
| | | | | | | | | | - Amaya Alarcon
- Department of Cancer Epidemiology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - Diana Gutierrez
- Department of Cancer Epidemiology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | | | - Daniel Eriksson
- Department of Clinical Genetics, Akademiska Sjukhuset, Uppsala, Sweden
| | - Raymond Kim
- Bhalwani Familial Cancer Clinic, Princess Margaret Cancer Centre, Toronto, ON M5G 2C1, Canada
| | - Susan Armel
- Bhalwani Familial Cancer Clinic, Princess Margaret Cancer Centre, Toronto, ON M5G 2C1, Canada
| | | | | | - Åke Borg
- University of Lund, 221 00 Lund, Sweden
| | - Bing Xia
- Rutgers Cancer Institute of New Jersey and Robert Wood Johnson Medical School, New Brunswick, NJ, USA
| | - Marcelo A Carvalho
- Divisão de Pesquisa Clínica, Instituto Nacional de Câncer, Rio de Janeiro 20230-130, Brazil; Instituto Federal do Rio de Janeiro - IFRJ, Rio de Janeiro 20270-021, Brazil.
| | - Alvaro N A Monteiro
- Department of Cancer Epidemiology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA.
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6
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Rein HL, Bernstein KA. Finding significance: New perspectives in variant classification of the RAD51 regulators, BRCA2 and beyond. DNA Repair (Amst) 2023; 130:103563. [PMID: 37651978 PMCID: PMC10529980 DOI: 10.1016/j.dnarep.2023.103563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 08/11/2023] [Accepted: 08/15/2023] [Indexed: 09/02/2023]
Abstract
For many individuals harboring a variant of uncertain functional significance (VUS) in a homologous recombination (HR) gene, their risk of developing breast and ovarian cancer is unknown. Integral to the process of HR are BRCA1 and regulators of the central HR protein, RAD51, including BRCA2, PALB2, RAD51C and RAD51D. Due to advancements in sequencing technology and the continued expansion of cancer screening panels, the number of VUS identified in these genes has risen significantly. Standard practices for variant classification utilize different types of predictive, population, phenotypic, allelic and functional evidence. While variant analysis is improving, there remains a struggle to keep up with demand. Understanding the effects of an HR variant can aid in preventative care and is critical for developing an effective cancer treatment plan. In this review, we discuss current perspectives in the classification of variants in the breast and ovarian cancer genes BRCA1, BRCA2, PALB2, RAD51C and RAD51D.
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Affiliation(s)
- Hayley L Rein
- University of Pittsburgh, School of Medicine, Department of Pharmacology and Chemical Biology, Pittsburgh, PA, USA
| | - Kara A Bernstein
- University of Pennsylvania School of Medicine, Department of Biochemistry and Biophysics, 421 Curie Boulevard, Philadelphia, PA, USA.
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7
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Gracia B, Montes P, Gutierrez AM, Arun B, Karras GI. Protein-Folding Chaperones Predict Structure-Function Relationships and Cancer Risk in BRCA1 Mutation Carriers. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.09.14.557795. [PMID: 37745493 PMCID: PMC10515940 DOI: 10.1101/2023.09.14.557795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/26/2023]
Abstract
Identifying pathogenic mutations and predicting their impact on protein structure, function and phenotype remain major challenges in genome sciences. Protein-folding chaperones participate in structure-function relationships by facilitating the folding of protein variants encoded by mutant genes. Here, we utilize a high-throughput protein-protein interaction assay to test HSP70 and HSP90 chaperone interactions as predictors of pathogenicity for variants in the tumor suppressor BRCA1. Chaperones bind 77% of pathogenic BRCA1-BRCT variants, most of which engaged HSP70 more than HSP90. Remarkably, the magnitude of chaperone binding to variants is proportional to the degree of structural and phenotypic defect induced by BRCA1 mutation. Quantitative chaperone interactions identified BRCA1-BRCT separation-of-function variants and hypomorphic alleles missed by pathogenicity prediction algorithms. Furthermore, increased chaperone binding signified greater cancer risk in human BRCA1 carriers. Altogether, our study showcases the utility of chaperones as quantitative cellular biosensors of variant folding and phenotypic severity. HIGHLIGHTS Chaperones detect an abundance of pathogenic folding variants of BRCA1-BRCT.Degree of chaperone binding reflects severity of structural and phenotypic defect.Chaperones identify separation-of-function and hypomorphic variants. Chaperone interactions indicate penetrance and expressivity of BRCA1 alleles.
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8
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Mota MBS, Woods NT, Carvalho MA, Monteiro ANA, Mesquita RD. Evolution of the triplet BRCT domain. DNA Repair (Amst) 2023; 129:103532. [PMID: 37453244 DOI: 10.1016/j.dnarep.2023.103532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 06/28/2023] [Accepted: 07/01/2023] [Indexed: 07/18/2023]
Abstract
Organisms have evolved a complex system, called the DNA damage response (DDR), which maintains genome integrity. The DDR is responsible for identifying and repairing a variety of lesions and alterations in DNA. DDR proteins coordinate DNA damage detection, cell cycle arrest, and repair, with many of these events regulated by protein phosphorylation. In the human proteome, 23 proteins contain the BRCT (BRCA1 C-Terminus domain) domain, a modular signaling domain that can bind phosphopeptides and mediate protein-protein interactions. BRCTs can be found as functional single units, tandem (tBRCT), triplet (tpBRCT), and quartet. Here we examine the evolution of the tpBRCT architecture present in TOPBP1 (DNA topoisomerase II binding protein 1) and ECT2 (epithelial cell transforming 2), and their respective interaction partners RAD9 (Cell cycle checkpoint control protein RAD9) and CYK-4 (Rac GTPase-activating protein 1), with a focus on the conservation of the phosphopeptide-binding residues. The pair TOPBP1-RAD9 arose with the Eukaryotes and ECT2-CYK-4 with the Eumetazoans. Triplet structural and functional characteristics were conserved in almost all organisms. The first unit of the triplet (BRCT0) is different from the other two BRCTs but conserved between orthologs for both TOPBP1 and ECT2. BRCT domain evolution simulations suggest a trend to retain the singlet or towards two or three BRCT copies per protein consistent with functional tBRCT and tpBRCT architectures. Our results shed light on the emergence of the function and architecture of multiple BRCT domain organizations and provide information about the evolution of the BRCT triplet. Knowledge of BRCT domain evolution can improve the understanding of DNA damage response mechanisms and signal transduction in DDR.
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Affiliation(s)
- M B S Mota
- Departamento de Bioquímica, Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - N T Woods
- Eppley Institute, Fred & Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - M A Carvalho
- Instituto Federal de Educação, Ciência e Tecnologia do Rio de Janeiro, RJ, Brazil; Instituto Nacional de Câncer, Rio de Janeiro, RJ, Brazil
| | - A N A Monteiro
- Cancer Epidemiology Program, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - R D Mesquita
- Departamento de Bioquímica, Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil.
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9
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Stephens DC, Crabtree A, Beasley HK, Garza-Lopez E, Mungai M, Vang L, Neikirk K, Vue Z, Vue N, Marshall AG, Turner K, Shao JQ, Sarker B, Murray S, Gaddy JA, Hinton AO, Damo S, Davis J. In the Age of Machine Learning Cryo-EM Research is Still Necessary: A Path toward Precision Medicine. Adv Biol (Weinh) 2023; 7:e2300122. [PMID: 37246245 DOI: 10.1002/adbi.202300122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 04/29/2023] [Indexed: 05/30/2023]
Abstract
Machine learning has proven useful in analyzing complex biological data and has greatly influenced the course of research in structural biology and precision medicine. Deep neural network models oftentimes fail to predict the structure of complex proteins and are heavily dependent on experimentally determined structures for their training and validation. Single-particle cryogenic electron microscopy (cryoEM) is also advancing the understanding of biology and will be needed to complement these models by continuously supplying high-quality experimentally validated structures for improvements in prediction quality. In this perspective, the significance of structure prediction methods is highlighted, but the authors also ask, what if these programs cannot accurately predict a protein structure important for preventing disease? The role of cryoEM is discussed to help fill the gaps left by artificial intelligence predictive models in resolving targetable proteins and protein complexes that will pave the way for personalized therapeutics.
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Affiliation(s)
- Dominique C Stephens
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN, 37232, USA
- Department of Life and Physical Sciences, Fisk University, Nashville, TN, 37232, USA
| | - Amber Crabtree
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN, 37232, USA
| | - Heather K Beasley
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN, 37232, USA
| | - Edgar Garza-Lopez
- Department of Internal Medicine, University of Iowa, Iowa City, IA, 52242, USA
| | - Margaret Mungai
- Department of Internal Medicine, University of Iowa, Iowa City, IA, 52242, USA
| | - Larry Vang
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN, 37232, USA
| | - Kit Neikirk
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN, 37232, USA
| | - Zer Vue
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN, 37232, USA
| | - Neng Vue
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN, 37232, USA
| | - Andrea G Marshall
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN, 37232, USA
| | - Kyrin Turner
- Department of Life and Physical Sciences, Fisk University, Nashville, TN, 37232, USA
| | - Jian-Qiang Shao
- Central Microscopy Research Facility, University of Iowa, Iowa City, IA, 52242, USA
| | - Bishnu Sarker
- School of Applied Computational Sciences, Meharry Medical College, Nashville, TN, 37208, USA
| | - Sandra Murray
- Department of Cell Biology, College of Medicine, University of Pittsburgh, Pittsburgh, PA, 15260, USA
| | - Jennifer A Gaddy
- Division of Infectious Diseases, Vanderbilt University School of Medicine, Nashville, TN, 37232, USA
- U.S. Department of Veterans Affairs, Tennessee Valley Healthcare Systems, Nashville, TN, 37212, USA
| | - Antentor O Hinton
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN, 37232, USA
| | - Steven Damo
- Department of Life and Physical Sciences, Fisk University, Nashville, TN, 37232, USA
| | - Jamaine Davis
- Department of Biochemistry and Cancer Biology, Meharry Medical College, Nashville, TN, 37208, USA
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10
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Peña-Guerrero J, Fernández-Rubio C, García-Sosa AT, Nguewa PA. BRCT Domains: Structure, Functions, and Implications in Disease-New Therapeutic Targets for Innovative Drug Discovery against Infections. Pharmaceutics 2023; 15:1839. [PMID: 37514027 PMCID: PMC10386641 DOI: 10.3390/pharmaceutics15071839] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 06/12/2023] [Accepted: 06/22/2023] [Indexed: 07/30/2023] Open
Abstract
The search for new therapeutic targets and their implications in drug development remains an emerging scientific topic. BRCT-bearing proteins are found in Archaea, Bacteria, Eukarya, and viruses. They are traditionally involved in DNA repair, recombination, and cell cycle control. To carry out these functions, BRCT domains are able to interact with DNA and proteins. Moreover, such domains are also implicated in several pathogenic processes and malignancies including breast, ovarian, and lung cancer. Although these domains exhibit moderately conserved folding, their sequences show very low conservation. Interestingly, sequence variations among species are considered positive traits in the search for suitable therapeutic targets, since non-specific drug interactions might be reduced. These main characteristics of BRCT, as well as its critical implications in key biological processes in the cell, have prompted the study of these domains as therapeutic targets. This review explores the possible roles of BRCT domains as therapeutic targets for drug discovery. We describe their common structural features and relevant interactions and pathways, as well as their implications in pathologic processes. Drugs commonly used to target these domains are also presented. Finally, based on their structures, we describe new drug design possibilities using modern and innovative techniques.
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Affiliation(s)
- José Peña-Guerrero
- ISTUN Institute of Tropical Health, Department of Microbiology and Parasitology, University of Navarra, IdiSNA (Navarra Institute for Health Research), E-31008 Pamplona, Navarra, Spain
| | - Celia Fernández-Rubio
- ISTUN Institute of Tropical Health, Department of Microbiology and Parasitology, University of Navarra, IdiSNA (Navarra Institute for Health Research), E-31008 Pamplona, Navarra, Spain
| | - Alfonso T García-Sosa
- Chair of Molecular Technology, Institute of Chemistry, University of Tartu, Ravila 14a, 50411 Tartu, Estonia
| | - Paul A Nguewa
- ISTUN Institute of Tropical Health, Department of Microbiology and Parasitology, University of Navarra, IdiSNA (Navarra Institute for Health Research), E-31008 Pamplona, Navarra, Spain
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11
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Bassi N, Hovland HN, Rasheed K, Jarhelle E, Pedersen N, Mchaina EK, Bakkan SME, Iversen N, Høberg-Vetti H, Haukanes BI, Knappskog PM, Aukrust I, Ognedal E, Van Ghelue M. Functional analyses of rare germline BRCA1 variants by transcriptional activation and homologous recombination repair assays. BMC Cancer 2023; 23:368. [PMID: 37085799 PMCID: PMC10122298 DOI: 10.1186/s12885-023-10790-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 03/30/2023] [Indexed: 04/23/2023] Open
Abstract
BACKGROUND Damaging alterations in the BRCA1 gene have been extensively described as one of the main causes of hereditary breast and ovarian cancer (HBOC). BRCA1 alterations can lead to impaired homologous recombination repair (HRR) of double-stranded DNA breaks, a process which involves the RING, BRCT and coiled-coil domains of the BRCA1 protein. In addition, the BRCA1 protein is involved in transcriptional activation (TA) of several genes through its C-terminal BRCT domain. METHODS In this study, we have investigated the effect on HRR and TA of 11 rare BRCA1 missense variants classified as variants of uncertain clinical significance (VUS), located within or in close proximity to the BRCT domain, with the aim of generating additional knowledge to guide the correct classification of these variants. The variants were selected from our previous study "BRCA1 Norway", which is a collection of all BRCA1 variants detected at the four medical genetic departments in Norway. RESULTS All variants, except one, showed a significantly reduced HRR activity compared to the wild type (WT) protein. Two of the variants (p.Ala1708Val and p.Trp1718Ser) also exhibited low TA activity similar to the pathogenic controls. The variant p.Trp1718Ser could be reclassified to likely pathogenic. However, for ten of the variants, the total strength of pathogenic evidence was not sufficient for reclassification according to the CanVIG-UK BRCA1/BRCA2 gene-specific guidelines for variant interpretation. CONCLUSIONS When including the newly achieved functional evidence with other available information, one VUS was reclassified to likely pathogenic. Eight of the investigated variants affected only one of the assessed activities of BRCA1, highlighting the importance of comparing results obtained from several functional assays to better understand the consequences of BRCA1 variants on protein function. This is especially important for multifunctional proteins such as BRCA1.
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Affiliation(s)
- Nicola Bassi
- Department of Medical Genetics, Division of Child and Adolescent Health, University Hospital of North Norway, Tromsø, Norway
| | - Henrikke Nilsen Hovland
- Familial Cancer Center, Haukeland University Hospital, Bergen, Norway
- Department of Medical Genetics, Haukeland University Hospital, Bergen, Norway
- Department of Clinical Science, University of Bergen, Bergen, Norway
| | - Kashif Rasheed
- Department of Medical Biology, University of Tromsø, Tromsø, Norway
- Present address: Institute for Clinical and Molecular Medicine, Norwegian University of Science and Technology, NTNU, Trondheim, Norway
| | - Elisabeth Jarhelle
- Department of Medical Genetics, Division of Child and Adolescent Health, University Hospital of North Norway, Tromsø, Norway
- Northern Norway Family Cancer Center, University Hospital of North Norway, Tromsø, Norway
| | - Nikara Pedersen
- Department of Biological Sciences, University of Bergen, Bergen, Norway
| | - Eunice Kabanyana Mchaina
- Familial Cancer Center, Haukeland University Hospital, Bergen, Norway
- Department of Medical Genetics, Haukeland University Hospital, Bergen, Norway
| | | | - Nina Iversen
- Department of Medical Genetics, Oslo University Hospital, Oslo, Norway
| | - Hildegunn Høberg-Vetti
- Familial Cancer Center, Haukeland University Hospital, Bergen, Norway
- Department of Medical Genetics, Haukeland University Hospital, Bergen, Norway
| | - Bjørn Ivar Haukanes
- Department of Medical Genetics, Haukeland University Hospital, Bergen, Norway
| | - Per Morten Knappskog
- Department of Medical Genetics, Haukeland University Hospital, Bergen, Norway
- Department of Clinical Science, University of Bergen, Bergen, Norway
| | - Ingvild Aukrust
- Department of Medical Genetics, Haukeland University Hospital, Bergen, Norway.
- Department of Clinical Science, University of Bergen, Bergen, Norway.
| | - Elisabet Ognedal
- Familial Cancer Center, Haukeland University Hospital, Bergen, Norway
- Department of Medical Genetics, Haukeland University Hospital, Bergen, Norway
| | - Marijke Van Ghelue
- Department of Medical Genetics, Division of Child and Adolescent Health, University Hospital of North Norway, Tromsø, Norway
- Northern Norway Family Cancer Center, University Hospital of North Norway, Tromsø, Norway
- Department of Clinical Medicine, University of Tromsø, Tromsø, Norway
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12
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Qin Z, Li J, Tam B, Sinha S, Zhao B, Bhaskaran SP, Huang T, Wu X, Chian JS, Guo M, Kou SH, Lei H, Zhang L, Wang X, Lagniton PNP, Xiao F, Jiang X, Wang SM. Ethnic-specificity, evolution origin and deleteriousness of Asian BRCA variation revealed by over 7500 BRCA variants derived from Asian population. Int J Cancer 2023; 152:1159-1173. [PMID: 36385461 PMCID: PMC10098510 DOI: 10.1002/ijc.34359] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 10/23/2022] [Accepted: 11/08/2022] [Indexed: 11/18/2022]
Abstract
Pathogenic variation in BRCA1 and BRCA2 (BRCA) causes high risk of breast and ovarian cancer, and BRCA variation data are important markers for BRCA-related clinical cancer applications. However, comprehensive BRCA variation data are lacking from the Asian population despite its large population size, heterogenous genetic background and diversified living environment across the Asia continent. We performed a systematic study on BRCA variation in Asian population including extensive data mining, standardization, annotation and characterization. We identified 7587 BRCA variants from 685 592 Asian individuals in 40 Asia countries and regions, including 1762 clinically actionable pathogenic variants and 4915 functionally unknown variants (https://genemutation.fhs.um.edu.mo/Asian-BRCA/). We observed the highly ethnic-specific nature of Asian BRCA variants between Asian and non-Asian populations and within Asian populations, highlighting that the current European descendant population-based BRCA data is inadequate to reflect BRCA variation in the Asian population. We also provided archeological evidence for the evolutionary origin and arising time of Asian BRCA variation. We further provided structural-based evidence for the deleterious variants enriched within the functionally unknown Asian BRCA variants. The data from our study provide a current view of BRCA variation in the Asian population and a rich resource to guide clinical applications of BRCA-related cancer for the Asian population.
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Affiliation(s)
- Zixin Qin
- Ministry of Education Frontiers Science Center for Precision Oncology, Cancer Centre and Institute of Translational Medicine, Department of Public Health and Medical Administration, Faculty of Health Sciences, University of Macau, Macao SAR, China
| | - Jiaheng Li
- Ministry of Education Frontiers Science Center for Precision Oncology, Cancer Centre and Institute of Translational Medicine, Department of Public Health and Medical Administration, Faculty of Health Sciences, University of Macau, Macao SAR, China
| | - Benjamin Tam
- Ministry of Education Frontiers Science Center for Precision Oncology, Cancer Centre and Institute of Translational Medicine, Department of Public Health and Medical Administration, Faculty of Health Sciences, University of Macau, Macao SAR, China
| | - Siddharth Sinha
- Ministry of Education Frontiers Science Center for Precision Oncology, Cancer Centre and Institute of Translational Medicine, Department of Public Health and Medical Administration, Faculty of Health Sciences, University of Macau, Macao SAR, China
| | - Bojin Zhao
- Ministry of Education Frontiers Science Center for Precision Oncology, Cancer Centre and Institute of Translational Medicine, Department of Public Health and Medical Administration, Faculty of Health Sciences, University of Macau, Macao SAR, China
| | - Shanmuga Priya Bhaskaran
- Ministry of Education Frontiers Science Center for Precision Oncology, Cancer Centre and Institute of Translational Medicine, Department of Public Health and Medical Administration, Faculty of Health Sciences, University of Macau, Macao SAR, China
| | - Teng Huang
- Ministry of Education Frontiers Science Center for Precision Oncology, Cancer Centre and Institute of Translational Medicine, Department of Public Health and Medical Administration, Faculty of Health Sciences, University of Macau, Macao SAR, China
| | - Xiaobing Wu
- Ministry of Education Frontiers Science Center for Precision Oncology, Cancer Centre and Institute of Translational Medicine, Department of Public Health and Medical Administration, Faculty of Health Sciences, University of Macau, Macao SAR, China
| | - Jia Sheng Chian
- Ministry of Education Frontiers Science Center for Precision Oncology, Cancer Centre and Institute of Translational Medicine, Department of Public Health and Medical Administration, Faculty of Health Sciences, University of Macau, Macao SAR, China
| | - Maoni Guo
- Ministry of Education Frontiers Science Center for Precision Oncology, Cancer Centre and Institute of Translational Medicine, Department of Public Health and Medical Administration, Faculty of Health Sciences, University of Macau, Macao SAR, China
| | - Si Hoi Kou
- Ministry of Education Frontiers Science Center for Precision Oncology, Cancer Centre and Institute of Translational Medicine, Department of Public Health and Medical Administration, Faculty of Health Sciences, University of Macau, Macao SAR, China
| | - Huijun Lei
- Ministry of Education Frontiers Science Center for Precision Oncology, Cancer Centre and Institute of Translational Medicine, Department of Public Health and Medical Administration, Faculty of Health Sciences, University of Macau, Macao SAR, China
| | - Li Zhang
- Ministry of Education Frontiers Science Center for Precision Oncology, Cancer Centre and Institute of Translational Medicine, Department of Public Health and Medical Administration, Faculty of Health Sciences, University of Macau, Macao SAR, China
| | - Xiaoyu Wang
- Ministry of Education Frontiers Science Center for Precision Oncology, Cancer Centre and Institute of Translational Medicine, Department of Public Health and Medical Administration, Faculty of Health Sciences, University of Macau, Macao SAR, China
| | - Philip Naderev P Lagniton
- Ministry of Education Frontiers Science Center for Precision Oncology, Cancer Centre and Institute of Translational Medicine, Department of Public Health and Medical Administration, Faculty of Health Sciences, University of Macau, Macao SAR, China
| | - Fengxia Xiao
- Ministry of Education Frontiers Science Center for Precision Oncology, Cancer Centre and Institute of Translational Medicine, Department of Public Health and Medical Administration, Faculty of Health Sciences, University of Macau, Macao SAR, China
| | - Xinyang Jiang
- Ministry of Education Frontiers Science Center for Precision Oncology, Cancer Centre and Institute of Translational Medicine, Department of Public Health and Medical Administration, Faculty of Health Sciences, University of Macau, Macao SAR, China
| | - San Ming Wang
- Ministry of Education Frontiers Science Center for Precision Oncology, Cancer Centre and Institute of Translational Medicine, Department of Public Health and Medical Administration, Faculty of Health Sciences, University of Macau, Macao SAR, China
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13
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Ducker C, Ratnam M, Shaw PE, Layfield R. Comparative analysis of protein expression systems and PTM landscape in the study of transcription factor ELK-1. Protein Expr Purif 2023; 203:106216. [PMID: 36528218 DOI: 10.1016/j.pep.2022.106216] [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: 10/11/2022] [Revised: 12/06/2022] [Accepted: 12/14/2022] [Indexed: 12/23/2022]
Abstract
Post-translational modifications (PTMs) are important for protein folding and activity, and the ability to recreate physiologically relevant PTM profiles on recombinantly-expressed proteins is vital for meaningful functional analysis. The ETS transcription factor ELK-1 serves as a paradigm for cellular responses to mitogens and can synergise with androgen receptor to promote prostate cancer progression, although in vitro protein function analyses to date have largely overlooked its complex PTM landscapes. We expressed and purified human ELK-1 using mammalian (HEK293T), insect (Sf9) and bacterial (E. coli) systems in parallel and compared PTMs imparted upon purified proteins, along with their performance in DNA and protein interaction assays. Phosphorylation of ELK-1 within its transactivation domain, known to promote DNA binding, was most apparent in protein isolated from human cells and accordingly conferred the strongest DNA binding in vitro, while protein expressed in insect cells bound most efficiently to the androgen receptor. We observed lysine acetylation, a hitherto unreported PTM of ELK-1, which appeared highest in insect cell-derived ELK-1 but was also present in HEK293T-derived ELK-1. Acetylation of ELK-1 was enhanced in HEK293T cells following starvation and mitogen stimulation, and modified lysines showed overlap with previously identified regulatory SUMOylation and ubiquitination sites. Our data demonstrate that the choice of recombinant expression system can be tailored to suit biochemical application rather than to maximise soluble protein production and suggest the potential for crosstalk and antagonism between different PTMs of ELK-1.
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Affiliation(s)
- Charles Ducker
- School of Life Sciences, University of Nottingham, Queen's Medical Centre, Nottingham, United Kingdom.
| | - Manohar Ratnam
- Department of Oncology, Wayne State University School of Medicine and Barbara Ann Karmanos Cancer Institute, Detroit, MI, USA
| | - Peter E Shaw
- School of Life Sciences, University of Nottingham, Queen's Medical Centre, Nottingham, United Kingdom
| | - Robert Layfield
- School of Life Sciences, University of Nottingham, Queen's Medical Centre, Nottingham, United Kingdom
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14
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Functional Analyses of Rare Germline Missense BRCA1 Variants Located within and outside Protein Domains with Known Functions. Genes (Basel) 2023; 14:genes14020262. [PMID: 36833189 PMCID: PMC9957003 DOI: 10.3390/genes14020262] [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: 12/14/2022] [Revised: 01/16/2023] [Accepted: 01/17/2023] [Indexed: 01/20/2023] Open
Abstract
The BRCA1 protein is implicated in numerous important cellular processes to prevent genomic instability and tumorigenesis, and pathogenic germline variants predispose carriers to hereditary breast and ovarian cancer (HBOC). Most functional studies of missense variants in BRCA1 focus on variants located within the Really Interesting New Gene (RING), coiled-coil and BRCA1 C-terminal (BRCT) domains, and several missense variants in these regions have been shown to be pathogenic. However, the majority of these studies focus on domain specific assays, and have been performed using isolated protein domains and not the full-length BRCA1 protein. Furthermore, it has been suggested that BRCA1 missense variants located outside domains with known function are of no functional importance, and could be classified as (likely) benign. However, very little is known about the role of the regions outside the well-established domains of BRCA1, and only a few functional studies of missense variants located within these regions have been published. In this study, we have, therefore, functionally evaluated the effect of 14 rare BRCA1 missense variants considered to be of uncertain clinical significance, of which 13 are located outside the well-established domains and one within the RING domain. In order to investigate the hypothesis stating that most BRCA1 variants located outside the known protein domains are benign and of no functional importance, multiple protein assays including protein expression and stability, subcellular localisation and protein interactions have been performed, utilising the full-length protein to better mimic the native state of the protein. Two variants located outside the known domains (p.Met297Val and p.Asp1152Asn) and one variant within the RING domain (p.Leu52Phe) were found to make the BRCA1 protein more prone to proteasome-mediated degradation. In addition, two variants (p.Leu1439Phe and p.Gly890Arg) also located outside known domains were found to have reduced protein stability compared to the wild type protein. These findings indicate that variants located outside the RING, BRCT and coiled-coiled domains could also affect the BRCA1 protein function. For the nine remaining variants, no significant effects on BRCA1 protein functions were observed. Based on this, a reclassification of seven variants from VUS to likely benign could be suggested.
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15
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De Paolis E, Paris I, Tilocca B, Roncada P, Foca L, Tiberi G, D’Angelo T, Pavese F, Muratore M, Carbognin L, Garganese G, Masetti R, Di Leone A, Fabi A, Scambia G, Urbani A, Generali D, Minucci A, Santonocito C. Assessing the pathogenicity of BRCA1/2 variants of unknown significance: Relevance and challenges for breast cancer precision medicine. Front Oncol 2023; 12:1053035. [PMID: 36741700 PMCID: PMC9891372 DOI: 10.3389/fonc.2022.1053035] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Accepted: 12/28/2022] [Indexed: 01/19/2023] Open
Abstract
Introduction Breast cancer (BC) is the leading cause of cancer-related death in women worldwide. Pathogenic variants in BRCA1 and BRCA2 genes account for approximately 50% of all hereditary BC, with 60-80% of patients characterized by Triple Negative Breast Cancer (TNBC) at an early stage phenotype. The identification of a pathogenic BRCA1/2 variant has important and expanding roles in risk-reducing surgeries, treatment planning, and familial surveillance. Otherwise, finding unclassified Variants of Unknown Significance (VUS) limits the clinical utility of the molecular test, leading to an "imprecise medicine". Methods We reported the explanatory example of the BRCA1 c.5057A>C, p.(His1686Pro) VUS identified in a patient with TNBC. We integrated data from family history and clinic-pathological evaluations, genetic analyses, and bioinformatics in silico investigations to evaluate the VUS classification. Results Our evaluation posed evidences for the pathogenicity significance of the investigated VUS: 1) association of the BRCA1 variant to cancer-affected members of the family; 2) absence of another high-risk mutation; 3) multiple indirect evidences derived from gene and protein structural analysis. Discussion In line with the ongoing efforts to uncertain variants classification, we speculated about the relevance of an in-depth assessment of pathogenicity of BRCA1/2 VUS for a personalized management of patients with BC. We underlined that the efficient integration of clinical data with the widest number of supporting molecular evidences should be adopted for the proper management of patients, with the final aim of effectively guide the best prognostic and therapeutic paths.
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Affiliation(s)
- Elisa De Paolis
- Clinical Chemistry, Biochemistry and Molecular Biology Operations (UOC), Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy,Department of Basic Biotechnological Sciences, Intensivological and Perioperative Clinics, Catholic University of Sacred Heart, Rome, Italy
| | - Ida Paris
- Division of Oncological Gynecology, Department of Women’s and Children’s Health, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy,*Correspondence: Ida Paris,
| | - Bruno Tilocca
- Department of Health Science, University “Magna Graecia” of Catanzaro, Catanzaro, Italy
| | - Paola Roncada
- Department of Health Science, University “Magna Graecia” of Catanzaro, Catanzaro, Italy
| | - Laura Foca
- Clinical Chemistry, Biochemistry and Molecular Biology Operations (UOC), Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Giordana Tiberi
- Division of Oncological Gynecology, Department of Women’s and Children’s Health, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Tatiana D’Angelo
- Division of Oncological Gynecology, Department of Women’s and Children’s Health, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Francesco Pavese
- Division of Oncological Gynecology, Department of Women’s and Children’s Health, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Margherita Muratore
- Division of Oncological Gynecology, Department of Women’s and Children’s Health, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Luisa Carbognin
- Division of Oncological Gynecology, Department of Women’s and Children’s Health, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Giorgia Garganese
- Gynaecology and Breast Care Center, Mater Olbia Hospital, Olbia, Italy,Dipartimento Universitario Scienze della Vita e Sanità Pubblica, Sezione di Ginecologia ed Ostetricia, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Riccardo Masetti
- Division of Oncological Gynecology, Department of Women’s and Children’s Health, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Alba Di Leone
- Division of Oncological Gynecology, Department of Women’s and Children’s Health, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Alessandra Fabi
- Unit of Precision Medicine in Breast Cancer, Scientific Directorate, Department of Woman and Child Health and Public Health, Fondazione Policlinico Universitario A. Gemelli, IRCCS, Rome, Italy
| | - Giovanni Scambia
- Division of Oncological Gynecology, Department of Women’s and Children’s Health, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Andrea Urbani
- Clinical Chemistry, Biochemistry and Molecular Biology Operations (UOC), Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy,Department of Basic Biotechnological Sciences, Intensivological and Perioperative Clinics, Catholic University of Sacred Heart, Rome, Italy
| | - Daniele Generali
- Department of Medical, Surgery and Health Sciences, University of Trieste, Trieste, Italy
| | - Angelo Minucci
- Departmental Unit of Molecular and Genomic Diagnostics, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Concetta Santonocito
- Clinical Chemistry, Biochemistry and Molecular Biology Operations (UOC), Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy,Department of Basic Biotechnological Sciences, Intensivological and Perioperative Clinics, Catholic University of Sacred Heart, Rome, Italy
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16
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Noumi E, Ahmad I, Bouali N, Patel H, Ghannay S, ALrashidi AA, Abdulhakeem MA, Patel M, Ceylan O, Badraoui R, Mousa Elayyan AE, Adnan M, Kadri A, Snoussi M. Thymus musilii Velen. Methanolic Extract: In Vitro and In Silico Screening of Its Antimicrobial, Antioxidant, Anti-Quorum Sensing, Antibiofilm, and Anticancer Activities. LIFE (BASEL, SWITZERLAND) 2022; 13:life13010062. [PMID: 36676011 PMCID: PMC9862435 DOI: 10.3390/life13010062] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 12/19/2022] [Accepted: 12/20/2022] [Indexed: 12/28/2022]
Abstract
Thymus musilii Velen. is a rare plant species cultivated in the Ha'il region (Saudi Arabia) under greenhouse conditions. In this work, we described, for the first time, the phytochemical composition, antimicrobial, antioxidant, anti-quorum sensing, and anticancer activities of T. musilii methanolic extract using both experimental and computational approaches. The obtained results showed the identification of eight small-like peptides and eighteen phyto-compounds by using high-resolution liquid chromatography-mass spectrometry (HR-LCMS) dominated mainly by compounds belonging to isoprenoid, fatty acyl, flavonoid, and alkaloid classes. The tested extracts exhibited high antifungal and antibacterial activity with the mean diameter of growth inhibition zones ranging from 12.33 ± 0.57 mm (Pseudomonas aeruginosa ATCC 27853) to 29.33 ± 1.15 mm (Candida albicans ATCC 10231). Low minimal inhibitory concentrations were recorded for the tested micro-organisms ranging from 0.781 mg/mL to 12.5 mg/mL. While higher doses were necessary to completely kill all tested bacterial and fungal strains. Thyme extract was able to scavenge DPPH•, ABTS•+, β-carotene, and FRAP free radicals, and the IC50 values were 0.077 ± 0.0015 mg/mL, 0.040 ± 0.011 mg/mL, 0.287 ± 0.012 mg/mL, and 0.106 ± 0.007 mg/mL, respectively. The highest percentage of swarming and swimming inhibition was recorded at 100 µg/mL with 39.73 ± 1.5% and 25.18 ± 1%, respectively. The highest percentage of biofilm inhibition was recorded at 10 mg/mL for S. typhimurium ATCC 14028 (53.96 ± 4.21%) and L. monocytogenes ATCC 7644 (49.54 ± 4.5 mg/mL). The in silico docking study revealed that the observed antimicrobial, antioxidant, and anticancer activities of the constituent compounds of T. musilii are thermodynamically feasible, notably, such as those of the tripeptides (Asn-Met-His, His-Cys-Asn, and Phe-His-Gln), isoprenoids (10-Hydroxyloganin), and diterpene glycosides (4-Ketoretinoic acid glucuronide).
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Affiliation(s)
- Emira Noumi
- Department of Biology, College of Science, University of Ha’il, P.O. Box 2440, Hail 81451, Saudi Arabia
- Laboratory of Genetics, Biodiversity and Valorization of Bio-Resources (LR11ES41), Higher Institute of Biotechnology of Monastir, University of Monastir, Avenue Tahar Haddad, BP74, Monastir 5000, Tunisia
- Correspondence:
| | - Iqrar Ahmad
- Department of Pharmaceutical Chemistry, Prof. Ravindra Nikam College of Pharmacy, Gondur, Dhule 424002, India
| | - Nouha Bouali
- Department of Biology, College of Science, University of Ha’il, P.O. Box 2440, Hail 81451, Saudi Arabia
| | - Harun Patel
- Division of Computer Aided Drug Design, Department of Pharmaceutical Chemistry, R. C. Patel Institute of Pharmaceutical Education and Research, Shirpur 425405, India
| | - Siwar Ghannay
- Department of Chemistry, College of Science, Qassim University, P.O. Box 6688, Buraidah 51452, Saudi Arabia
| | - Ayshah Aysh ALrashidi
- Department of Biology, College of Science, University of Ha’il, P.O. Box 2440, Hail 81451, Saudi Arabia
| | - Mohammad A. Abdulhakeem
- Department of Biology, College of Science, University of Ha’il, P.O. Box 2440, Hail 81451, Saudi Arabia
| | - Mitesh Patel
- Centre of Research for Development, Department of Biotechnology, Parul Institute of Applied Sciences, Parul University, Vadodara 391760, India
| | - Ozgur Ceylan
- Ula Ali Kocman Vocational School, Mugla Sitki Kocman University, Mugla 48147, Turkey
| | - Riadh Badraoui
- Department of Biology, College of Science, University of Ha’il, P.O. Box 2440, Hail 81451, Saudi Arabia
- Department of Histo Embryology and Cytogenetics, Medicine Faculty of Sfax, University of Sfax, Road of Majida Boulia, Sfax 3029, Tunisia
| | - Afnan Elayyan Mousa Elayyan
- Department of Clinical Laboratory Science, College of Applied Sciences-Qurayyat, Jouf University, P.O. Box 2014, Sakaka 72388, Saudi Arabia
| | - Mohd Adnan
- Department of Biology, College of Science, University of Ha’il, P.O. Box 2440, Hail 81451, Saudi Arabia
| | - Adel Kadri
- Faculty of Science and Arts in Baljurashi, Albaha University, P.O. Box 1988, Albaha 65527, Saudi Arabia
- Department of Chemistry, Faculty of Science of Sfax, University of Sfax, B.P. 1171, Sfax 3000, Tunisia
| | - Mejdi Snoussi
- Department of Biology, College of Science, University of Ha’il, P.O. Box 2440, Hail 81451, Saudi Arabia
- Laboratory of Genetics, Biodiversity and Valorization of Bio-Resources (LR11ES41), Higher Institute of Biotechnology of Monastir, University of Monastir, Avenue Tahar Haddad, BP74, Monastir 5000, Tunisia
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17
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Zhang J, Pei J, Durham J, Bos T, Cong Q. Computed cancer interactome explains the effects of somatic mutations in cancers. Protein Sci 2022; 31:e4479. [PMID: 36261849 PMCID: PMC9667826 DOI: 10.1002/pro.4479] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 09/28/2022] [Accepted: 10/13/2022] [Indexed: 12/13/2022]
Abstract
Protein-protein interactions (PPIs) are involved in almost all essential cellular processes. Perturbation of PPI networks plays critical roles in tumorigenesis, cancer progression, and metastasis. While numerous high-throughput experiments have produced a vast amount of data for PPIs, these data sets suffer from high false positive rates and exhibit a high degree of discrepancy. Coevolution of amino acid positions between protein pairs has proven to be useful in identifying interacting proteins and providing structural details of the interaction interfaces with the help of deep learning methods like AlphaFold (AF). In this study, we applied AF to investigate the cancer protein-protein interactome. We predicted 1,798 PPIs for cancer driver proteins involved in diverse cellular processes such as transcription regulation, signal transduction, DNA repair, and cell cycle. We modeled the spatial structures for the predicted binary protein complexes, 1,087 of which lacked previous 3D structure information. Our predictions offer novel structural insight into many cancer-related processes such as the MAP kinase cascade and Fanconi anemia pathway. We further investigated the cancer mutation landscape by mapping somatic missense mutations (SMMs) in cancer to the predicted PPI interfaces and performing enrichment and depletion analyses. Interfaces enriched or depleted with SMMs exhibit different preferences for functional categories. Interfaces enriched in mutations tend to function in pathways that are deregulated in cancers and they may help explain the molecular mechanisms of cancers in patients; interfaces lacking mutations appear to be essential for the survival of cancer cells and thus may be future targets for PPI modulating drugs.
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Affiliation(s)
- Jing Zhang
- Eugene McDermott Center for Human Growth and DevelopmentUniversity of Texas Southwestern Medical CenterDallasTexasUSA
- Department of BiophysicsUniversity of Texas Southwestern Medical CenterDallasTexasUSA
| | - Jimin Pei
- Eugene McDermott Center for Human Growth and DevelopmentUniversity of Texas Southwestern Medical CenterDallasTexasUSA
- Department of BiophysicsUniversity of Texas Southwestern Medical CenterDallasTexasUSA
| | - Jesse Durham
- Eugene McDermott Center for Human Growth and DevelopmentUniversity of Texas Southwestern Medical CenterDallasTexasUSA
- Department of BiophysicsUniversity of Texas Southwestern Medical CenterDallasTexasUSA
| | - Tasia Bos
- Eugene McDermott Center for Human Growth and DevelopmentUniversity of Texas Southwestern Medical CenterDallasTexasUSA
- Department of BiophysicsUniversity of Texas Southwestern Medical CenterDallasTexasUSA
| | - Qian Cong
- Eugene McDermott Center for Human Growth and DevelopmentUniversity of Texas Southwestern Medical CenterDallasTexasUSA
- Department of BiophysicsUniversity of Texas Southwestern Medical CenterDallasTexasUSA
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18
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Regulation of BRCA1 stability through the tandem UBX domains of isoleucyl-tRNA synthetase 1. Nat Commun 2022; 13:6732. [PMID: 36347866 PMCID: PMC9643514 DOI: 10.1038/s41467-022-34612-y] [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: 02/25/2022] [Accepted: 10/27/2022] [Indexed: 11/11/2022] Open
Abstract
Aminoacyl-tRNA synthetases (ARSs) have evolved to acquire various additional domains. These domains allow ARSs to communicate with other cellular proteins in order to promote non-translational functions. Vertebrate cytoplasmic isoleucyl-tRNA synthetases (IARS1s) have an uncharacterized unique domain, UNE-I. Here, we present the crystal structure of the chicken IARS1 UNE-I complexed with glutamyl-tRNA synthetase 1 (EARS1). UNE-I consists of tandem ubiquitin regulatory X (UBX) domains that interact with a distinct hairpin loop on EARS1 and protect its neighboring proteins in the multi-synthetase complex from degradation. Phosphomimetic mutation of the two serine residues in the hairpin loop releases IARS1 from the complex. IARS1 interacts with BRCA1 in the nucleus, regulates its stability by inhibiting ubiquitylation via the UBX domains, and controls DNA repair function.
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19
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Chemical Composition and the Anticancer, Antimicrobial, and Antioxidant Properties of Acacia Honey from the Hail Region: The in vitro and in silico Investigation. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2022; 2022:1518511. [PMID: 35966725 PMCID: PMC9371847 DOI: 10.1155/2022/1518511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Revised: 05/27/2022] [Accepted: 06/28/2022] [Indexed: 11/17/2022]
Abstract
In consideration of the emergence of novel drug-resistant microbial strains and the increase in the incidences of various cancers throughout the world, honey could be utilized as a great alternative source of potent bioactive compounds. In this context, this study pioneers in reporting the phytochemical profiling and the antimicrobial, antioxidant, and anticancer properties of Acacia honey (AH) from the Hail region of Saudi Arabia, assessed using in vitro and molecular docking approaches. The phytochemical profiling based on high-resolution liquid chromatography-mass spectrometry (HR-LCMS) revealed eight compounds and three small peptide-like proteins as the constituents. The honey samples exhibited promising antioxidant activities (DPPH-IC50 = 0.670 mg/mL; ABTS-IC50 = 1.056 mg/mL; β-carotene-IC50 > 5 mg/mL). In the well-diffusion assay, a high mean growth inhibition zone (mGIZ) was observed against Staphylococcus aureus (48.33 ± 1.53 mm), Escherichia coli ATCC 10536 (38.33 ± 1.53 mm), and Staphylococcus epidermidis ATCC 12228 (39.33 ± 1.15 mm). The microdilution assay revealed that low concentrations of AH could inhibit the growth of almost all the evaluated bacterial and fungal strains, with the minimal bactericidal concentration values (MBCs) ranging from 75 mg/mL to 300 mg/mL. On the contrary, high AH concentrations were required to kill the tested microorganisms, with the minimal bactericidal concentration values (MBCs) ranging from approximately 300 mg/mL to over 600 mg/mL and the minimal fungicidal concentration values (MFCs) of approximately 600 mg/mL. The AH exhibited effective anticancer activity in a dose-dependent manner against breast (MCF-7), colon (HCT-116), and lung (A549) cancer cell lines, with the corresponding IC50 values of 5.053 μg/mL, 5.382 μg/mL, and 6.728 μg/mL, respectively. The in silico investigation revealed that the observed antimicrobial, antioxidant, and anticancer activities of the constituent compounds of AH are thermodynamically feasible, particularly those of the tripeptides (Asp-Trp-His and Trp-Arg-Ala) and aminocyclitol glycoside. The overall results highlighted the potential of AH as a source of bioactive compounds with significant antimicrobial, antioxidant, and anticancer activities, which could imply further pharmacological applications of AH.
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20
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Synthesis, characterization and bioactivity of novel 8-hydroxyquinoline derivatives: Experimental, molecular docking, DFT and POM analyses. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132688] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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Chen T, Yeh HW, Chen PP, Huang WT, Wu CY, Liao TC, Lin SL, Chen YY, Lin KT, Hsu STD, Cheng HC. BARD1 is an ATPase activating protein for OLA1. Biochim Biophys Acta Gen Subj 2022; 1866:130099. [DOI: 10.1016/j.bbagen.2022.130099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 01/19/2022] [Accepted: 02/01/2022] [Indexed: 11/30/2022]
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22
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Kökbudak Z, Akkoç S, Karataş H, Tüzün B, Aslan G. In Silico
and
In Vitro
Antiproliferative Activity Assessment of New Schiff Bases. ChemistrySelect 2022. [DOI: 10.1002/slct.202103679] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - Senem Akkoç
- Department of Basic Pharmaceutical Science Suleyman Demirel University Isparta Turkey
| | - Halis Karataş
- Department of Chemistry Erciyes University Kayseri Turkey
| | - Burak Tüzün
- Plant and Animal Production Department Sivas Cumhuriyet University Sivas Turkey
| | - Güzin Aslan
- Department of Chemistry Erciyes University Kayseri Turkey
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23
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Affiliation(s)
- Gwen R Buel
- Center for Structural Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD, USA
| | - Kylie J Walters
- Center for Structural Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD, USA.
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24
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El Faydy M, Dahaieh N, Ounine K, Lakhrissi B, Warad I, Tüzün B, Zarrouk A. Synthesis, Identification, Antibacterial Activity, ADME/T and 1BNA-Docking Investigations of 8-Quinolinol Analogs Bearing a Benzimidazole Moiety. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2022. [DOI: 10.1007/s13369-021-05749-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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25
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Synthesis, bioinformatics and biological evaluation of novel pyridine based on 8-hydroxyquinoline derivatives as antibacterial agents: DFT, molecular docking and ADME/T studies. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130934] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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26
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Russi M, Marson D, Fermeglia A, Aulic S, Fermeglia M, Laurini E, Pricl S. The fellowship of the RING: BRCA1, its partner BARD1 and their liaison in DNA repair and cancer. Pharmacol Ther 2021; 232:108009. [PMID: 34619284 DOI: 10.1016/j.pharmthera.2021.108009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Revised: 08/22/2021] [Accepted: 09/20/2021] [Indexed: 12/12/2022]
Abstract
The breast cancer type 1 susceptibility protein (BRCA1) and its partner - the BRCA1-associated RING domain protein 1 (BARD1) - are key players in a plethora of fundamental biological functions including, among others, DNA repair, replication fork protection, cell cycle progression, telomere maintenance, chromatin remodeling, apoptosis and tumor suppression. However, mutations in their encoding genes transform them into dangerous threats, and substantially increase the risk of developing cancer and other malignancies during the lifetime of the affected individuals. Understanding how BRCA1 and BARD1 perform their biological activities therefore not only provides a powerful mean to prevent such fatal occurrences but can also pave the way to the development of new targeted therapeutics. Thus, through this review work we aim at presenting the major efforts focused on the functional characterization and structural insights of BRCA1 and BARD1, per se and in combination with all their principal mediators and regulators, and on the multifaceted roles these proteins play in the maintenance of human genome integrity.
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Affiliation(s)
- Maria Russi
- Molecular Biology and Nanotechnology Laboratory (MolBNL@UniTs), DEA, University of Trieste, Trieste, Italy
| | - Domenico Marson
- Molecular Biology and Nanotechnology Laboratory (MolBNL@UniTs), DEA, University of Trieste, Trieste, Italy
| | - Alice Fermeglia
- Molecular Biology and Nanotechnology Laboratory (MolBNL@UniTs), DEA, University of Trieste, Trieste, Italy
| | - Suzana Aulic
- Molecular Biology and Nanotechnology Laboratory (MolBNL@UniTs), DEA, University of Trieste, Trieste, Italy
| | - Maurizio Fermeglia
- Molecular Biology and Nanotechnology Laboratory (MolBNL@UniTs), DEA, University of Trieste, Trieste, Italy
| | - Erik Laurini
- Molecular Biology and Nanotechnology Laboratory (MolBNL@UniTs), DEA, University of Trieste, Trieste, Italy
| | - Sabrina Pricl
- Molecular Biology and Nanotechnology Laboratory (MolBNL@UniTs), DEA, University of Trieste, Trieste, Italy; Department of General Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, Lodz, Poland.
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27
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Bilgiçli AT, Kandemir T, Tüzün B, Arıduru R, Günsel A, Abak Ç, Yarasir MN, Arabaci G. Octa‐substituted Zinc(II), Cu(II), and Co(II) phthalocyanines with 1‐(4‐hydroxyphenyl)propane‐1‐one: Synthesis, sensitive protonation behaviors, Ag(I) induced H‐type aggregation properties, antibacterial–antioxidant activity, and molecular docking studies. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6353] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
| | | | - Burak Tüzün
- Department of Chemistry Cumhuriyet University Sivas Turkey
| | - Rana Arıduru
- Department of Chemistry Sakarya University Sakarya Turkey
| | - Armağan Günsel
- Department of Chemistry Sakarya University Sakarya Turkey
| | - Çağla Abak
- Department of Chemistry Sakarya University Sakarya Turkey
| | | | - Gulnur Arabaci
- Department of Chemistry Sakarya University Sakarya Turkey
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28
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Yavuz SÇ, Akkoç S, Tüzün B, Şahin O, Saripinar E. Efficient synthesis and molecular docking studies of new pyrimidine-chromeno hybrid derivatives as potential antiproliferative agents. SYNTHETIC COMMUN 2021. [DOI: 10.1080/00397911.2021.1922920] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Sevtap Çağlar Yavuz
- Department of Chemistry, Faculty of Science, Erciyes University, Kayseri, Turkey
- Department of Veterinary Science, Şefaatli Vocational School, Yozgat Bozok University, Yozgat, Turkey
| | - Senem Akkoç
- Department of Basic Pharmaceutical Sciences, Faculty of Pharmacy, Süleyman Demirel University, Isparta, Turkey
| | - Burak Tüzün
- Department of Chemistry, Faculty of Science, Sivas Cumhuriyet University, Sivas, Turkey
| | - Onur Şahin
- Scientific and Technological Research Application and Research Center, Sinop University, Sinop, Turkey
| | - Emin Saripinar
- Department of Chemistry, Faculty of Science, Erciyes University, Kayseri, Turkey
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29
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Önem E, Tüzün B, Akkoç S. Anti-quorum sensing activity in Pseudomonas aeruginosa PA01 of benzimidazolium salts: electronic, spectral and structural investigations as theoretical approach. J Biomol Struct Dyn 2021; 40:6845-6856. [PMID: 33645444 DOI: 10.1080/07391102.2021.1890222] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Quorum sensing (QS) is a system used in the expression of virulence factors by many pathogenic bacteria, and blockage of the system is seen as a new and effective strategy in combating with resistant bacteria. The inhibition effects of two benzimidazolium salts, namely 1-(2-methylbenzonitrile)-3-benzylbenzimidazolium bromide (2) and 1-(N-methylphthalimide)-3-(4-methylbenzyl)benzimidazolium bromide (3), on quorum sensing-related virulence factors such as pyocyanin, elastase, biofilm formation and swarming motility, which is an opportunistic pathogen Pseudomonas aeruginosa PA01, were investigated in this study. The results show that the compound 3 has a significant inhibition on biofilm formation with 94%. Furthermore, the compounds 2 and 3 reduced swarming motility by 64-69% as well as pyocyanin production by 49-64% in P. aeruginosa PA01 without preventing bacterial growth in the tested concentrations. HF, B3LYP and M06-2X methods were used with 3-21 g, 6-31 g, sdd basis sets to compare the chemical activity of the compounds. Theoretically, 1H NMR, 13C NMR and Infrared spectra of the compounds were calculated in the HF/6-31++g basis set. The biological activities of the relative compounds were theoretically studied against cancer proteins. Crystal structure of the BRCT repeat region from the breast cancer associated protein, ID: 1JNX, crystal structure of liver cancer protein, ID: 3WZE and crystal structure of lung cancer protein, ID: 5ZMA, were compared. In the docking studies, the best result was obtained with compound 2 against the lung cancer cell with a docking score parameter of -5.85.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Ebru Önem
- Faculty of Pharmacy, Department of Pharmaceutical Microbiology, Suleyman Demirel University, Isparta, Turkey
| | - Burak Tüzün
- Faculty of Sciences, Department of Chemistry, Cumhuriyet University, Sivas, Turkey
| | - Senem Akkoç
- Faculty of Pharmacy, Department of Basic Pharmaceutical Sciences, Suleyman Demirel University, Isparta, Turkey
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30
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Kaya S, Erkan S, Karakaş D. Computational investigation of molecular structures, spectroscopic properties and antitumor-antibacterial activities of some Schiff bases. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 244:118829. [PMID: 32858450 DOI: 10.1016/j.saa.2020.118829] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 07/29/2020] [Accepted: 08/09/2020] [Indexed: 06/11/2023]
Abstract
Molecular structures, spectroscopic properties (IR, 1H NMR and 13C NMR, UV-VIS), molecular electrostatic potential maps and some molecular properties (ionization energy, electron affinity, energy gap, hardness, electronegativity, electrophilicity index, static dipole moment and average linear polarizability) of three Schiff bases which are 2-((ethylamino)methyl)-6-methoxyphenol (HL1), 2-((ethylamino) methyl)-6-methylphenol (HL2) and 2-((ethylamino)methyl)-6-chlorophenol (HL3) were computed at B3LYP/6-31G(d) level in aqueous phase. The effects of methoxy, methyl and chloro substituents on Schiff bases were examined and it was found that the electron donating property of methyl and chlorine substituents was higher than the methoxy substituent. In order to investigate the antitumor activities of Schiff bases were docked against the breast cancer (MCF7) cell line. Molecular docking results were compared with antitumor standard 5-fluorouracil. Antitumor activity of HL2 and HL3 molecule was found to be higher than HL1 against MCF-7 cell line. In addition, in order to predict the antibacterial activities of Schiff bases were docked against the Mycobacterium tuberculosis (H37Rv) cell line. Docking results were compared with the antibacterial reference N-(salicylidene)-2-hydroxyaniline. Antibacterial activity of HL2 and HL3 molecules was found to be higher than HL1. It is estimated that the binding of the electron donating group to the ortho position of the hydroxyl group in studied Schiff bases increases both antitumor and antibacterial activity.
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Affiliation(s)
- Serpil Kaya
- Sivas Cumhuriyet University, Science Faculty, Chemistry Department, 58140 Sivas, Turkey
| | - Sultan Erkan
- Sivas Cumhuriyet University, Science Faculty, Chemistry Department, 58140 Sivas, Turkey
| | - Duran Karakaş
- Sivas Cumhuriyet University, Science Faculty, Chemistry Department, 58140 Sivas, Turkey.
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31
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Zhang J, Yan Z, Wang Y, Wang Y, Guo X, Jing J, Dong X, Dong S, Liu X, Yu X, Wu C. Cancer-associated 53BP1 mutations induce DNA damage repair defects. Cancer Lett 2020; 501:43-54. [PMID: 33359708 DOI: 10.1016/j.canlet.2020.12.033] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 12/18/2020] [Accepted: 12/21/2020] [Indexed: 12/29/2022]
Abstract
TP53 binding protein 1 (53BP1) plays an important role in DNA damage repair and maintaining genomic stability. However, the mutations of 53BP1 in human cancers have not been systematically examined. Here, we have analyzed 541 somatic mutations of 53BP1 across 34 types of human cancer from databases of The Cancer Genome Atlas, International Cancer Genome Consortium and Catalogue of Somatic Mutations in Cancer. Among these cancer-associated 53BP1 mutations, truncation mutations disrupt the nuclear localization of 53BP1 thus abolish its biological functions in DNA damage repair. Moreover, with biochemical analyses and structural modeling, we have examined the detailed molecular mechanism by which missense mutations in the key domains causes the DNA damage repair defects. Taken together, our results reveal the functional defects of a set of cancer-associated 53BP1 mutations.
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Affiliation(s)
- Jiajia Zhang
- School of Life Sciences, Institute of Life Sciences and Green Development, Hebei University, Baoding, 071002, Hebei, China
| | - Zhenzhen Yan
- School of Life Sciences, Institute of Life Sciences and Green Development, Hebei University, Baoding, 071002, Hebei, China
| | - Yukun Wang
- School of Life Sciences, Institute of Life Sciences and Green Development, Hebei University, Baoding, 071002, Hebei, China
| | - Yaguang Wang
- School of Life Sciences, Institute of Life Sciences and Green Development, Hebei University, Baoding, 071002, Hebei, China
| | - Xin Guo
- School of Life Sciences, Institute of Life Sciences and Green Development, Hebei University, Baoding, 071002, Hebei, China
| | - Ju Jing
- School of Life Sciences, Institute of Life Sciences and Green Development, Hebei University, Baoding, 071002, Hebei, China
| | - Xiangnan Dong
- School of Life Sciences, Institute of Life Sciences and Green Development, Hebei University, Baoding, 071002, Hebei, China
| | - Shasha Dong
- School of Life Sciences, Institute of Life Sciences and Green Development, Hebei University, Baoding, 071002, Hebei, China
| | - Xiuhua Liu
- School of Life Sciences, Institute of Life Sciences and Green Development, Hebei University, Baoding, 071002, Hebei, China.
| | - Xiaochun Yu
- School of Life Sciences, Westlake University, Hangzhou, Zhejiang, 310024, China.
| | - Chen Wu
- School of Life Sciences, Institute of Life Sciences and Green Development, Hebei University, Baoding, 071002, Hebei, China.
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32
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Lyra PCM, Nepomuceno TC, de Souza MLM, Machado GF, Veloso MF, Henriques TB, Dos Santos DZ, Ribeiro IG, Ribeiro RS, Rangel LBA, Richardson M, Iversen ES, Goldgar D, Couch FJ, Carvalho MA, Monteiro ANA. Integration of functional assay data results provides strong evidence for classification of hundreds of BRCA1 variants of uncertain significance. Genet Med 2020; 23:306-315. [PMID: 33087888 PMCID: PMC7862071 DOI: 10.1038/s41436-020-00991-0] [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: 04/09/2020] [Revised: 09/21/2020] [Accepted: 09/22/2020] [Indexed: 12/13/2022] Open
Abstract
Purpose BRCA1 pathogenic variant heterozygotes are at a substantially increased risk for breast and ovarian cancer. The widespread uptake of testing has led to a significant increase in the detection of missense variants in BRCA1, the vast majority of which are variants of uncertain clinical significance (VUS), posing a challenge to genetic counseling. Here, we harness a wealth of functional data for thousands of variants to aid in variant classification. Methods We have collected, curated, and harmonized functional data for 2701 missense variants representing 24.5% of possible missense variants in BRCA1. Results were harmonized across studies by converting data into binary categorical variables (functional impact versus no functional impact). Using a panel of reference variants we identified a subset of assays with high sensitivity and specificity (≥80%) and apply the American College of Medical Genetics and Genomics/Association for Molecular Pathology (ACMG/AMP) variant interpretation guidelines to assign evidence criteria for classification. Results Integration of data from validated assays provided ACMG/AMP evidence criteria in favor of pathogenicity for 297 variants or against pathogenicity for 2058 representing 96.2% of current VUS functionally assessed. We also explore discordant results and identify limitations in the approach. Conclusion High quality functional data are available for BRCA1 missense variants and provide evidence for classification of 2355 VUS according to their pathogenicity.
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Affiliation(s)
- Paulo C M Lyra
- Biotechnology/RENORBIO Program, Federal University of Espírito Santo, Vitória, ES, Brazil
| | - Thales C Nepomuceno
- Instituto Nacional de Câncer, Programa de Pesquisa Clínica, Rio de Janeiro, Brazil.,Divisão de Pesquisa Clínica, Instituto Nacional de Câncer, Rio de Janeiro, Brazil.,Cancer Epidemiology Program, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Marcele L M de Souza
- Biotechnology/RENORBIO Program, Federal University of Espírito Santo, Vitória, ES, Brazil
| | - Géssica F Machado
- Biotechnology/RENORBIO Program, Federal University of Espírito Santo, Vitória, ES, Brazil
| | - Mariana F Veloso
- Biotechnology/RENORBIO Program, Federal University of Espírito Santo, Vitória, ES, Brazil
| | - Taciane B Henriques
- Biotechnology/RENORBIO Program, Federal University of Espírito Santo, Vitória, ES, Brazil
| | - Diandra Z Dos Santos
- Biotechnology/RENORBIO Program, Federal University of Espírito Santo, Vitória, ES, Brazil
| | - Iuly G Ribeiro
- Biotechnology/RENORBIO Program, Federal University of Espírito Santo, Vitória, ES, Brazil
| | - Roberto S Ribeiro
- Biotechnology/RENORBIO Program, Federal University of Espírito Santo, Vitória, ES, Brazil
| | - Leticia B A Rangel
- Biotechnology/RENORBIO Program, Federal University of Espírito Santo, Vitória, ES, Brazil
| | | | - Edwin S Iversen
- Department of Statistical Science, Duke University, Durham, NC, USA
| | - David Goldgar
- Department of Dermatology, Huntsman Cancer Institute, University of Utah School of Medicine, Salt Lake City, UT, USA
| | | | - Marcelo A Carvalho
- Instituto Nacional de Câncer, Programa de Pesquisa Clínica, Rio de Janeiro, Brazil.,Instituto Federal do Rio de Janeiro-IFRJ, Rio de Janeiro, Brazil
| | - Alvaro N A Monteiro
- Cancer Epidemiology Program, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA.
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33
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Batenburg NL, Walker JR, Coulombe Y, Sherker A, Masson JY, Zhu XD. CSB interacts with BRCA1 in late S/G2 to promote MRN- and CtIP-mediated DNA end resection. Nucleic Acids Res 2020; 47:10678-10692. [PMID: 31501894 PMCID: PMC6847465 DOI: 10.1093/nar/gkz784] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2019] [Revised: 08/19/2019] [Accepted: 09/03/2019] [Indexed: 01/01/2023] Open
Abstract
CSB, a member of the SWI2/SNF2 superfamily, has been implicated in evicting histones to promote the DSB pathway choice towards homologous recombination (HR) repair. However, how CSB promotes HR repair remains poorly characterized. Here we demonstrate that CSB interacts with both MRE11/RAD50/NBS1 (MRN) and BRCA1 in a cell cycle regulated manner, with the former requiring its WHD and occurring predominantly in early S phase. CSB interacts with the BRCT domain of BRCA1 and this interaction is regulated by CDK-dependent phosphorylation of CSB on S1276. The CSB–BRCA1 interaction, which peaks in late S/G2 phase, is responsible for mediating the interaction of CSB with the BRCA1-C complex consisting of BRCA1, MRN and CtIP. While dispensable for histone eviction at DSBs, CSB phosphorylation on S1276 is necessary to promote efficient MRN- and CtIP-mediated DNA end resection, thereby restricting NHEJ and enforcing the DSB repair pathway choice to HR. CSB phosphorylation on S1276 is also necessary to support cell survival in response to DNA damage-inducing agents. These results altogether suggest that CSB interacts with BRCA1 to promote DNA end resection for HR repair and that although prerequisite, CSB-mediated histone eviction alone is insufficient to promote the pathway choice towards HR.
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Affiliation(s)
- Nicole L Batenburg
- Department of Biology, McMaster University, Hamilton, Ontario L8S 4K1, Canada
| | - John R Walker
- Department of Biology, McMaster University, Hamilton, Ontario L8S 4K1, Canada
| | - Yan Coulombe
- Genome Stability Laboratory, CHU de Québec Research Center, HDQ Pavilion, Oncology Division, 9 McMahon, Québec City, QC G1R 3S3, Canada.,Department of Molecular Biology, Medical Biochemistry and Pathology, Laval University Cancer Research Center, Québec City, QC G1V 0A6, Canada
| | - Alana Sherker
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, 600 University Avenue, Toronto, Ontario M5G 1X5, Canada.,Department of Molecular Genetics, University of Toronto, ON M5S 1A8, Canada
| | - Jean-Yves Masson
- Genome Stability Laboratory, CHU de Québec Research Center, HDQ Pavilion, Oncology Division, 9 McMahon, Québec City, QC G1R 3S3, Canada.,Department of Molecular Biology, Medical Biochemistry and Pathology, Laval University Cancer Research Center, Québec City, QC G1V 0A6, Canada
| | - Xu-Dong Zhu
- Department of Biology, McMaster University, Hamilton, Ontario L8S 4K1, Canada
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34
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Sinha S, Wang SM. Classification of VUS and unclassified variants in BRCA1 BRCT repeats by molecular dynamics simulation. Comput Struct Biotechnol J 2020; 18:723-736. [PMID: 32257056 PMCID: PMC7125325 DOI: 10.1016/j.csbj.2020.03.013] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 03/15/2020] [Accepted: 03/17/2020] [Indexed: 10/29/2022] Open
Abstract
Pathogenic mutation in BRCA1 gene is one of the most penetrant genetic predispositions towards cancer. Identification of the mutation provides important aspect in prevention and treatment of the mutation-caused cancer. Of the large quantity of genetic variants identified in human BRCA1, substantial portion is classified as Variant of Uncertain Significance (VUS) or unclassified variants due to the lack of functional evidence. In this study, we focused on the VUS and unclassified variants in BRCT repeat located at BRCA1 C-terminal. Utilizing the well-determined structure of BRCT repeats, we measured the influence of the variants on the structural conformations of BRCT repeats by using molecular dynamics simulation (MDS) consisting of RMSD (Root-mean-square-deviation), RMSF (Root-mean-square-fluctuations), Rg (Radius of gyration), SASA (Solvent accessible surface area), NH bond (hydrogen bond) and Covariance analysis. Using this approach, we analyzed 131 variants consisting of 89 VUS (Variant of Uncertain Significance) and 42 unclassified variants (unclassifiable by current methods) within BRCT repeats and were able to differentiate them into 78 Deleterious and 53 Tolerated variants. Comparing the results made by the saturation genome editing assay, multiple experimental assays, and BRCA1 reference databases shows that our approach provides high specificity, sensitivity and robust. Our study opens an avenue to classify VUS and unclassified variants in many cancer predisposition genes with known protein structure.
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Affiliation(s)
- Siddharth Sinha
- Cancer Centre and Institute of Translational Medicine, Faculty of Health Sciences, University of Macau, Macau, China
| | - San Ming Wang
- Cancer Centre and Institute of Translational Medicine, Faculty of Health Sciences, University of Macau, Macau, China
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35
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Liu W, Palovcak A, Li F, Zafar A, Yuan F, Zhang Y. Fanconi anemia pathway as a prospective target for cancer intervention. Cell Biosci 2020; 10:39. [PMID: 32190289 PMCID: PMC7075017 DOI: 10.1186/s13578-020-00401-7] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Accepted: 03/06/2020] [Indexed: 12/13/2022] Open
Abstract
Fanconi anemia (FA) is a recessive genetic disorder caused by biallelic mutations in at least one of 22 FA genes. Beyond its pathological presentation of bone marrow failure and congenital abnormalities, FA is associated with chromosomal abnormality and genomic instability, and thus represents a genetic vulnerability for cancer predisposition. The cancer relevance of the FA pathway is further established with the pervasive occurrence of FA gene alterations in somatic cancers and observations of FA pathway activation-associated chemotherapy resistance. In this article we describe the role of the FA pathway in canonical interstrand crosslink (ICL) repair and possible contributions of FA gene alterations to cancer development. We also discuss the perspectives and potential of targeting the FA pathway for cancer intervention.
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Affiliation(s)
- Wenjun Liu
- Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Gautier Building Room 311, 1011 NW 15th Street, Miami, FL 33136 USA
| | - Anna Palovcak
- Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Gautier Building Room 311, 1011 NW 15th Street, Miami, FL 33136 USA
| | - Fang Li
- Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Gautier Building Room 311, 1011 NW 15th Street, Miami, FL 33136 USA
| | - Alyan Zafar
- Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Gautier Building Room 311, 1011 NW 15th Street, Miami, FL 33136 USA
| | - Fenghua Yuan
- Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Gautier Building Room 311, 1011 NW 15th Street, Miami, FL 33136 USA
| | - Yanbin Zhang
- Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Gautier Building Room 311, 1011 NW 15th Street, Miami, FL 33136 USA
- Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, FL 33136 USA
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36
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Patel VL, Busch EL, Friebel TM, Cronin A, Leslie G, McGuffog L, Adlard J, Agata S, Agnarsson BA, Ahmed M, Aittomäki K, Alducci E, Andrulis IL, Arason A, Arnold N, Artioli G, Arver B, Auber B, Azzollini J, Balmaña J, Barkardottir RB, Barnes DR, Barroso A, Barrowdale D, Belotti M, Benitez J, Bertelsen B, Blok MJ, Bodrogi I, Bonadona V, Bonanni B, Bondavalli D, Boonen SE, Borde J, Borg A, Bradbury AR, Brady A, Brewer C, Brunet J, Buecher B, Buys SS, Cabezas-Camarero S, Caldés T, Caliebe A, Caligo MA, Calvello M, Campbell IG, Carnevali I, Carrasco E, Chan TL, Chu ATW, Chung WK, Claes KBM, Collaborators GS, Collaborators E, Cook J, Cortesi L, Couch FJ, Daly MB, Damante G, Darder E, Davidson R, de la Hoya M, Puppa LD, Dennis J, Díez O, Ding YC, Ditsch N, Domchek SM, Donaldson A, Dworniczak B, Easton DF, Eccles DM, Eeles RA, Ehrencrona H, Ejlertsen B, Engel C, Evans DG, Faivre L, Faust U, Feliubadaló L, Foretova L, Fostira F, Fountzilas G, Frost D, García-Barberán V, Garre P, Gauthier-Villars M, Géczi L, Gehrig A, Gerdes AM, Gesta P, Giannini G, Glendon G, Godwin AK, Goldgar DE, Greene MH, Gutierrez-Barrera AM, Hahnen E, Hamann U, Hauke J, Herold N, Hogervorst FBL, Honisch E, Hopper JL, Hulick PJ, Investigators KC, Investigators H, Izatt L, Jager A, James P, Janavicius R, Jensen UB, Jensen TD, Johannsson OT, John EM, Joseph V, Kang E, Kast K, Kiiski JI, Kim SW, Kim Z, Ko KP, Konstantopoulou I, Kramer G, Krogh L, Kruse TA, Kwong A, Larsen M, Lasset C, Lautrup C, Lazaro C, Lee J, Lee JW, Lee MH, Lemke J, Lesueur F, Liljegren A, Lindblom A, Llovet P, Lopez-Fernández A, Lopez-Perolio I, Lorca V, Loud JT, Ma ESK, Mai PL, Manoukian S, Mari V, Martin L, Matricardi L, Mebirouk N, Medici V, Meijers-Heijboer HEJ, Meindl A, Mensenkamp AR, Miller C, Gomes DM, Montagna M, Mooij TM, Moserle L, Mouret-Fourme E, Mulligan AM, Nathanson KL, Navratilova M, Nevanlinna H, Niederacher D, Nielsen FCC, Nikitina-Zake L, Offit K, Olah E, Olopade OI, Ong KR, Osorio A, Ott CE, Palli D, Park SK, Parsons MT, Pedersen IS, Peissel B, Peixoto A, Pérez-Segura P, Peterlongo P, Petersen AH, Porteous ME, Pujana MA, Radice P, Ramser J, Rantala J, Rashid MU, Rhiem K, Rizzolo P, Robson ME, Rookus MA, Rossing CM, Ruddy KJ, Santos C, Saule C, Scarpitta R, Schmutzler RK, Schuster H, Senter L, Seynaeve CM, Shah PD, Sharma P, Shin VY, Silvestri V, Simard J, Singer CF, Skytte AB, Snape K, Solano AR, Soucy P, Southey MC, Spurdle AB, Steele L, Steinemann D, Stoppa-Lyonnet D, Stradella A, Sunde L, Sutter C, Tan YY, Teixeira MR, Teo SH, Thomassen M, Tibiletti MG, Tischkowitz M, Tognazzo S, Toland AE, Tommasi S, Torres D, Toss A, Trainer AH, Tung N, van Asperen CJ, van der Baan FH, van der Kolk LE, van der Luijt RB, van Hest LP, Varesco L, Varon-Mateeva R, Viel A, Vierstraete J, Villa R, von Wachenfeldt A, Wagner P, Wang-Gohrke S, Wappenschmidt B, Weitzel JN, Wieme G, Yadav S, Yannoukakos D, Yoon SY, Zanzottera C, Zorn KK, D'Amico AV, Freedman ML, Pomerantz MM, Chenevix-Trench G, Antoniou AC, Neuhausen SL, Ottini L, Nielsen HR, Rebbeck TR. Association of Genomic Domains in BRCA1 and BRCA2 with Prostate Cancer Risk and Aggressiveness. Cancer Res 2020; 80:624-638. [PMID: 31723001 PMCID: PMC7553241 DOI: 10.1158/0008-5472.can-19-1840] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 08/07/2019] [Accepted: 11/08/2019] [Indexed: 12/15/2022]
Abstract
Pathogenic sequence variants (PSV) in BRCA1 or BRCA2 (BRCA1/2) are associated with increased risk and severity of prostate cancer. We evaluated whether PSVs in BRCA1/2 were associated with risk of overall prostate cancer or high grade (Gleason 8+) prostate cancer using an international sample of 65 BRCA1 and 171 BRCA2 male PSV carriers with prostate cancer, and 3,388 BRCA1 and 2,880 BRCA2 male PSV carriers without prostate cancer. PSVs in the 3' region of BRCA2 (c.7914+) were significantly associated with elevated risk of prostate cancer compared with reference bin c.1001-c.7913 [HR = 1.78; 95% confidence interval (CI), 1.25-2.52; P = 0.001], as well as elevated risk of Gleason 8+ prostate cancer (HR = 3.11; 95% CI, 1.63-5.95; P = 0.001). c.756-c.1000 was also associated with elevated prostate cancer risk (HR = 2.83; 95% CI, 1.71-4.68; P = 0.00004) and elevated risk of Gleason 8+ prostate cancer (HR = 4.95; 95% CI, 2.12-11.54; P = 0.0002). No genotype-phenotype associations were detected for PSVs in BRCA1. These results demonstrate that specific BRCA2 PSVs may be associated with elevated risk of developing aggressive prostate cancer. SIGNIFICANCE: Aggressive prostate cancer risk in BRCA2 mutation carriers may vary according to the specific BRCA2 mutation inherited by the at-risk individual.
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Affiliation(s)
- Vivek L Patel
- Department of Radiation Oncology, Dana-Farber Cancer Institute and Brigham and Women's Hospital, Boston, Massachusetts
| | - Evan L Busch
- Harvard T.H. Chan School of Public Health, Boston, Massachusetts
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Tara M Friebel
- Harvard T.H. Chan School of Public Health, Boston, Massachusetts
- Dana-Farber Cancer Institute. Boston, Massachusetts
| | - Angel Cronin
- Dana-Farber Cancer Institute. Boston, Massachusetts
| | - Goska Leslie
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, United Kingdom
| | - Lesley McGuffog
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, United Kingdom
| | - Julian Adlard
- Yorkshire Regional Genetics Service, Chapel Allerton Hospital, Leeds, United Kingdom
| | - Simona Agata
- Immunology and Molecular Oncology Unit, Veneto Institute of Oncology IOV - IRCCS, Padua, Italy
| | - Bjarni A Agnarsson
- Department of Pathology, Landspitali University Hospital, 101, Reykjavik, Iceland
- School of Medicine, University of Iceland, Reykjavik, Iceland
| | - Munaza Ahmed
- North East Thames Regional Genetics Service, Great Ormond Street Hospital for Children NHS Trust, London, United Kingdom
| | - Kristiina Aittomäki
- Department of Clinical Genetics, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - Elisa Alducci
- Immunology and Molecular Oncology Unit, Veneto Institute of Oncology IOV - IRCCS, Padua, Italy
| | - Irene L Andrulis
- Fred A. Litwin Center for Cancer Genetics, Lunenfeld-Tanenbaum Research Institute of Mount Sinai Hospital, Toronto, Ontario, Canada
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada
| | - Adalgeir Arason
- Department of Pathology, Landspitali University Hospital, 101, Reykjavik, Iceland
- BMC (Biomedical Centre), Faculty of Medicine, University of Iceland, Reykjavik, Iceland
| | - Norbert Arnold
- Department of Gynaecology and Obstetrics, University Hospital of Schleswig-Holstein, Campus Kiel, Christian-Albrechts University Kiel, Kiel, Germany
| | - Grazia Artioli
- ULSS 3 Serenissima, U.O.C. Oncologia ed Ematologia Oncologica, Mirano, Venice, Italy
| | - Brita Arver
- Department of Oncology, Karolinska Institutet, Stockholm, Sweden
| | - Bernd Auber
- Institute of Human Genetics, Hannover Medical School, Hannover, Germany
| | - Jacopo Azzollini
- Unit of Medical Genetics, Department of Medical Oncology and Hematology, Fondazione IRCCS (Istituto di Ricovero e Cura a Carattere Scientifico), Istituto Nazionale dei Tumori di Milano, Milan, Italy
| | - Judith Balmaña
- High Risk and Cancer Prevention Group, Vall d'Hebron Institute of Oncology, University Hospital Vall d'Hebron, Barcelona, Spain
| | - Rosa B Barkardottir
- Department of Pathology, Landspitali University Hospital, 101, Reykjavik, Iceland
- BMC (Biomedical Centre), Faculty of Medicine, University of Iceland, Reykjavik, Iceland
| | - Daniel R Barnes
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, United Kingdom
| | - Alicia Barroso
- Human Genetics Group, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
| | - Daniel Barrowdale
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, United Kingdom
| | | | - Javier Benitez
- Human Cancer Genetics Programme, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
- Biomedical Network on Rare Diseases (CIBERER), Madrid, Spain
| | - Birgitte Bertelsen
- Center for Genomic Medicine, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Marinus J Blok
- Department of Clinical Genetics, Maastricht University Medical Center, Maastricht, the Netherlands
| | - Istvan Bodrogi
- Department of Chemotherapy, National Institute of Oncology, Budapest, Hungary
| | - Valérie Bonadona
- Unité de Prévention et d'Epidémiologie Génétique, Centre Léon Bérard, Lyon, France
| | - Bernardo Bonanni
- Division of Cancer Prevention and Genetics, IEO, European Institute of Oncology IRCCS, Milan, Italy
| | - Davide Bondavalli
- Division of Cancer Prevention and Genetics, IEO, European Institute of Oncology IRCCS, Milan, Italy
| | - Susanne E Boonen
- Clinical Genetic Unit, Department of Paediatrics, Zealand University Hospital, Roskilde, Denmark
| | - Julika Borde
- Center for Integrated Oncology (CIO), University Hospital of Cologne, Cologne, Germany
- Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany
- Center for Hereditary Breast and Ovarian Cancer, University Hospital of Cologne, Cologne, Germany
| | - Ake Borg
- Department of Oncology, Lund University and Skåne University Hospital, Lund, Sweden
| | - Angela R Bradbury
- Department of Medicine, Abramson Cancer Center, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Angela Brady
- North West Thames Regional Genetics Service, Kennedy Galton Centre, The North West London Hospitals NHS Trust, Middlesex, United Kingdom
| | - Carole Brewer
- Department of Clinical Genetics, Royal Devon & Exeter Hospital, Exeter, United Kingdom
| | - Joan Brunet
- Genetic Counseling Unit, Hereditary Cancer Program, IDIBGI (Institut d'Investigació Biomèdica de Girona), Catalan Institute of Oncology, CIBERONC, Girona, Spain
| | | | - Saundra S Buys
- Department of Medicine, Huntsman Cancer Institute, Salt Lake City, Utah
| | | | - Trinidad Caldés
- Medical Oncology Department, Hospital Clínico San Carlos, Instituto de Investigación Sanitaria San Carlos (IdISSC), Centro Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain
| | - Almuth Caliebe
- Institute of Human Genetics, University Hospital of Schleswig-Holstein, Campus Kiel, Christian-Albrechts University Kiel, Kiel, Germany
| | - Maria A Caligo
- Section of Molecular Genetics, Department of Laboratory Medicine, University Hospital of Pisa, Pisa, Italy
| | - Mariarosaria Calvello
- Division of Cancer Prevention and Genetics, IEO, European Institute of Oncology IRCCS, Milan, Italy
| | - Ian G Campbell
- Peter MacCallum Cancer Center, Melbourne, Victoria, Australia
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Melbourne, Victoria, Australia
| | - Ileana Carnevali
- UO Anatomia Patologica, Ospedale di Circolo-Università dell'Insubria, Varese, Italy
| | - Estela Carrasco
- High Risk and Cancer Prevention Group, Vall d'Hebron Institute of Oncology, University Hospital Vall d'Hebron, Barcelona, Spain
| | - Tsun L Chan
- Hong Kong Hereditary Breast Cancer Family Registry, Cancer Genetics Centre, Happy Valley, Hong Kong
- Department of Pathology, Hong Kong Sanatorium and Hospital, Happy Valley, Hong Kong
| | - Annie T W Chu
- Hong Kong Hereditary Breast Cancer Family Registry, Cancer Genetics Centre, Happy Valley, Hong Kong
| | - Wendy K Chung
- Departments of Pediatrics and Medicine, Columbia University, New York, New York
| | | | | | - Embrace Collaborators
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, United Kingdom
| | - Jackie Cook
- Sheffield Clinical Genetics Service, Sheffield Children's Hospital, Sheffield, United Kingdom
| | - Laura Cortesi
- Department of Oncology and Haematology, University of Modena and Reggio Emilia, Modena, Italy
| | - Fergus J Couch
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota
| | - Mary B Daly
- Department of Clinical Genetics, Fox Chase Cancer Center, Philadelphia, Pennsylvania
| | - Giuseppe Damante
- Department of Medical and Biological Sciences, University of Udine, Udine, Italy
| | - Esther Darder
- Genetic Counseling Unit, Hereditary Cancer Program, IDIBGI (Institut d'Investigació Biomèdica de Girona), Catalan Institute of Oncology, CIBERONC, Girona, Spain
| | - Rosemarie Davidson
- Department of Clinical Genetics, South Glasgow University Hospitals, Glasgow, United Kingdom
| | - Miguel de la Hoya
- Medical Oncology Department, Hospital Clínico San Carlos, Instituto de Investigación Sanitaria San Carlos (IdISSC), Centro Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain
| | - Lara Della Puppa
- Division of Functional Onco-genomics and Genetics, Centro di Riferimento Oncologico di Aviano (CRO), IRCCS, Aviano, Italy
| | - Joe Dennis
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, United Kingdom
| | - Orland Díez
- Oncogenetics Group, Clinical and Molecular Genetics Area, Vall d'Hebron Institute of Oncology (VHIO), University Hospital, Barcelona, Spain
| | - Yuan Chun Ding
- Department of Population Sciences, Beckman Research Institute of City of Hope, Duarte, California
| | - Nina Ditsch
- Department of Gynecology and Obstetrics, Ludwig Maximilian University of Munich, Munich, Germany
| | - Susan M Domchek
- Department of Medicine, Abramson Cancer Center, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Alan Donaldson
- Clinical Genetics Department, St Michael's Hospital, Bristol, United Kingdom
| | - Bernd Dworniczak
- Institute of Human Genetics, University of Münster, Münster, Germany
| | - Douglas F Easton
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, United Kingdom
- Centre for Cancer Genetic Epidemiology, Department of Oncology, University of Cambridge, Cambridge, United Kingdom
| | - Diana M Eccles
- Cancer Sciences Academic Unit, Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| | - Rosalind A Eeles
- Oncogenetics Team, The Institute of Cancer Research and Royal Marsden NHS Foundation Trust, Sutton, United Kingdom
| | - Hans Ehrencrona
- Department of Clinical Genetics, Lund University Hospital, Lund, Sweden
| | - Bent Ejlertsen
- Department of Oncology, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Christoph Engel
- Institute for Medical Informatics, Statistics and Epidemiology, University of Leipzig, Leipzig, Germany
- LIFE - Leipzig Research Centre for Civilization Diseases, University of Leipzig, Leipzig, Germany
| | - D Gareth Evans
- Division of Evolution and Genomic Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health and Manchester Academic Health Science Centre, University of Manchester, Manchester, United Kingdom
- Manchester Centre for Genomic Medicine, St Mary's Hospital, Central Manchester University Hospitals NHS Foundation Trust and Manchester Academic Health Science Centre, Manchester, United Kingdom
| | - Laurence Faivre
- Unité d'oncogénétique, Centre de Lutte Contre le Cancer, Centre Georges-François Leclerc, Dijon, France
| | - Ulrike Faust
- Institute of Medical Genetics and Applied Genomics, University of Tübingen, Tübingen, Germany
| | - Lídia Feliubadaló
- Molecular Diagnostic Unit, Hereditary Cancer Program, IDIBELL (Bellvitge Biomedical Research Institute), Catalan Institute of Oncology, CIBERONC, Barcelona, Spain
| | - Lenka Foretova
- Department of Cancer Epidemiology and Genetics, Masaryk Memorial Cancer Institute, Brno, Czech Republic
| | - Florentia Fostira
- Molecular Diagnostics Laboratory, INRASTES, National Centre for Scientific Research "Demokritos", Athens, Greece
| | - George Fountzilas
- Second Department of Medical Oncology, EUROMEDICA General Clinic of Thessaloniki, Aristotle University of Thessaloniki School of Medicine, Thessaloniki, Greece
| | - Debra Frost
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, United Kingdom
| | - Vanesa García-Barberán
- Medical Oncology Department, Hospital Clínico San Carlos, Instituto de Investigación Sanitaria San Carlos (IdISSC), Centro Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain
| | - Pilar Garre
- Medical Oncology Department, Hospital Clínico San Carlos, Instituto de Investigación Sanitaria San Carlos (IdISSC), Centro Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain
| | | | - Lajos Géczi
- Department of Chemotherapy, National Institute of Oncology, Budapest, Hungary
| | - Andrea Gehrig
- Centre of Familial Breast and Ovarian Cancer, Department of Medical Genetics, Institute of Human Genetics, University of Würzburg, Würzburg, Germany
| | - Anne-Marie Gerdes
- Department of Clinical Genetics, Rigshospitalet, Copenhagen, Denmark
| | - Paul Gesta
- Service Régional Oncogénétique Poitou-Charentes, CH Niort, Niort, France
| | - Giuseppe Giannini
- Department of Molecular Medicine, University La Sapienza, Rome, Italy
| | - Gord Glendon
- Fred A. Litwin Center for Cancer Genetics, Lunenfeld-Tanenbaum Research Institute of Mount Sinai Hospital, Toronto, Ontario, Canada
| | - Andrew K Godwin
- Department of Pathology and Laboratory Medicine, Kansas University Medical Center, Kansas City, Kansas
| | - David E Goldgar
- Department of Dermatology, Huntsman Cancer Institute, University of Utah School of Medicine, Salt Lake City, Utah
| | - Mark H Greene
- Clinical Genetics Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, Maryland
| | - Angelica M Gutierrez-Barrera
- Department of Breast Medical Oncology and Clinical Genetics Program, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Eric Hahnen
- Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany
- Center for Hereditary Breast and Ovarian Cancer, University Hospital of Cologne, Cologne, Germany
| | - Ute Hamann
- Molecular Genetics of Breast Cancer, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Jan Hauke
- Center for Integrated Oncology (CIO), University Hospital of Cologne, Cologne, Germany
- Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany
- Center for Hereditary Breast and Ovarian Cancer, University Hospital of Cologne, Cologne, Germany
| | - Natalie Herold
- Center for Integrated Oncology (CIO), University Hospital of Cologne, Cologne, Germany
- Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany
- Center for Hereditary Breast and Ovarian Cancer, University Hospital of Cologne, Cologne, Germany
| | - Frans B L Hogervorst
- Family Cancer Clinic, The Netherlands Cancer Institute - Antoni van Leeuwenhoek Hospital, Amsterdam, the Netherlands
| | - Ellen Honisch
- Department of Gynecology and Obstetrics, University Hospital Düsseldorf, Heinrich-Heine University Düsseldorf, Düsseldorf, Germany
| | - John L Hopper
- Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Melbourne, Victoria, Australia
| | - Peter J Hulick
- Center for Medical Genetics, NorthShore University HealthSystem, Evanston, Illinois
- The University of Chicago Pritzker School of Medicine, Chicago, Illinois
| | - KConFab Investigators
- Peter MacCallum Cancer Center, Melbourne, Victoria, Australia
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Melbourne, Victoria, Australia
| | - Hebon Investigators
- The Hereditary Breast and Ovarian Cancer Research Group Netherlands (HEBON), Coordinating center: The Netherlands Cancer Institute, Amsterdam, the Netherlands
| | - Louise Izatt
- Clinical Genetics, Guy's and St Thomas' NHS Foundation Trust, London, United Kingdom
| | - Agnes Jager
- Department of Medical Oncology, Family Cancer Clinic, Erasmus MC Cancer Institute, Rotterdam, the Netherlands
| | - Paul James
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Melbourne, Victoria, Australia
- Parkville Familial Cancer Centre, Peter MacCallum Cancer Center, Melbourne, Victoria, Australia
| | - Ramunas Janavicius
- Hematology, Oncology and Transfusion Medicine Center, Department of Molecular and Regenerative Medicine, Vilnius University Hospital Santariskiu Clinics, Vilnius, Lithuania
| | - Uffe Birk Jensen
- Department of Clinical Genetics, Aarhus University Hospital, Aarhus, Denmark
| | | | | | - Esther M John
- Division of Oncology, Department of Medicine, Stanford Cancer Institute, Stanford University School of Medicine, Stanford, California
| | - Vijai Joseph
- Clinical Genetics Research Lab, Department of Cancer Biology and Genetics, Memorial Sloan-Kettering Cancer Center, New York, New York
| | - Eunyoung Kang
- Department of Surgery, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Karin Kast
- Department of Gynecology and Obstetrics, Technical University of Dresden, Dresden, Germany
| | - Johanna I Kiiski
- Department of Obstetrics and Gynecology, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - Sung-Won Kim
- Department of Surgery, Daerim Saint Mary's Hospital, Seoul, Korea
| | - Zisun Kim
- Department of Surgery, Soonchunhyang University Bucheon Hospital, Bucheon, Korea
| | - Kwang-Pil Ko
- Department of Preventive Medicine, Gacheon University College of Medicine, Incheon, Republic of Korea
| | - Irene Konstantopoulou
- Molecular Diagnostics Laboratory, INRASTES, National Centre for Scientific Research "Demokritos", Athens, Greece
| | - Gero Kramer
- Department of Urology, Medical University of Vienna, Vienna, Austria
| | - Lotte Krogh
- Department of Clinical Genetics, Odense University Hospital, Odense, Denmark
| | - Torben A Kruse
- Department of Clinical Genetics, Odense University Hospital, Odense, Denmark
| | - Ava Kwong
- Hong Kong Hereditary Breast Cancer Family Registry, Cancer Genetics Centre, Happy Valley, Hong Kong
- Department of Surgery, The University of Hong Kong, Pok Fu Lam, Hong Kong
- Department of Surgery, Hong Kong Sanatorium and Hospital, Happy Valley, Hong Kong
| | - Mirjam Larsen
- Center for Integrated Oncology (CIO), University Hospital of Cologne, Cologne, Germany
- Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany
- Center for Hereditary Breast and Ovarian Cancer, University Hospital of Cologne, Cologne, Germany
| | - Christine Lasset
- Unité de Prévention et d'Epidémiologie Génétique, Centre Léon Bérard, Lyon, France
| | - Charlotte Lautrup
- Department of Clinical Genetics, Aalborg University Hospital, Aalborg, Denmark
| | - Conxi Lazaro
- Molecular Diagnostic Unit, Hereditary Cancer Program, IDIBELL (Bellvitge Biomedical Research Institute), Catalan Institute of Oncology, CIBERONC, Barcelona, Spain
| | - Jihyoun Lee
- Department of Surgery, Soonchunhyang University College of Medicine and Soonchunhyang University Hospital, Seoul, Korea
| | - Jong Won Lee
- Department of Surgery, Ulsan University College of Medicine and Asan Medical Center, Seoul, Korea
| | - Min Hyuk Lee
- Department of Surgery, Soonchunhyang University College of Medicine and Soonchunhyang University Hospital, Seoul, Korea
| | - Johannes Lemke
- Institute of Human Genetics, University Hospital Leipzig, Leipzig, Germany
| | - Fabienne Lesueur
- Service de Génétique, Institut Curie, Paris, France
- Genetic Epidemiology of Cancer Team, Inserm U900, Paris, France
- Institut Curie, Paris, France
- Mines ParisTech, Fontainebleau, France
| | | | - Annika Lindblom
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
- Department of Clinical Genetics, Karolinska University Hospital, Stockholm, Sweden
| | - Patricia Llovet
- Medical Oncology Department, Hospital Clínico San Carlos, Instituto de Investigación Sanitaria San Carlos (IdISSC), Centro Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain
| | - Adria Lopez-Fernández
- High Risk and Cancer Prevention Group, Vall d'Hebron Institute of Oncology, University Hospital Vall d'Hebron, Barcelona, Spain
| | - Irene Lopez-Perolio
- Medical Oncology Department, Hospital Clínico San Carlos, Instituto de Investigación Sanitaria San Carlos (IdISSC), Centro Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain
| | - Victor Lorca
- Medical Oncology Department, Hospital Clínico San Carlos, Instituto de Investigación Sanitaria San Carlos (IdISSC), Centro Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain
| | - Jennifer T Loud
- Clinical Genetics Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, Maryland
| | - Edmond S K Ma
- Hong Kong Hereditary Breast Cancer Family Registry, Cancer Genetics Centre, Happy Valley, Hong Kong
- Department of Pathology, Hong Kong Sanatorium and Hospital, Happy Valley, Hong Kong
| | - Phuong L Mai
- Magee-Womens Hospital, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Siranoush Manoukian
- Unit of Medical Genetics, Department of Medical Oncology and Hematology, Fondazione IRCCS (Istituto di Ricovero e Cura a Carattere Scientifico), Istituto Nazionale dei Tumori di Milano, Milan, Italy
| | - Veronique Mari
- Département d'Hématologie-Oncologie Médicale, Centre Antoine Lacassagne, Nice, France
| | - Lynn Martin
- Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Laura Matricardi
- Immunology and Molecular Oncology Unit, Veneto Institute of Oncology IOV - IRCCS, Padua, Italy
| | - Noura Mebirouk
- Service de Génétique, Institut Curie, Paris, France
- Genetic Epidemiology of Cancer Team, Inserm U900, Paris, France
- Institut Curie, Paris, France
- Mines ParisTech, Fontainebleau, France
| | - Veronica Medici
- Department of Oncology and Haematology, University of Modena and Reggio Emilia, Modena, Italy
| | | | - Alfons Meindl
- Department of Gynecology and Obstetrics, Ludwig Maximilian University of Munich, Munich, Germany
| | - Arjen R Mensenkamp
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Clare Miller
- Department of Clinical Genetics, Alder Hey Hospital, Liverpool, United Kingdom
| | - Denise Molina Gomes
- Service de Biologie de la Reproduction, Cytogénétique et Génétique Médicale, CHI Poissy - Saint Germain, Poissy, France
| | - Marco Montagna
- Immunology and Molecular Oncology Unit, Veneto Institute of Oncology IOV - IRCCS, Padua, Italy
| | - Thea M Mooij
- Department of Epidemiology, The Netherlands Cancer Institute, Amsterdam, the Netherlands
| | - Lidia Moserle
- Immunology and Molecular Oncology Unit, Veneto Institute of Oncology IOV - IRCCS, Padua, Italy
| | | | - Anna Marie Mulligan
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada
- Laboratory Medicine Program, University Health Network, Toronto, Ontario, Canada
| | - Katherine L Nathanson
- Department of Medicine, Abramson Cancer Center, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Marie Navratilova
- Department of Cancer Epidemiology and Genetics, Masaryk Memorial Cancer Institute, Brno, Czech Republic
| | - Heli Nevanlinna
- Department of Obstetrics and Gynecology, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - Dieter Niederacher
- Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Melbourne, Victoria, Australia
| | - Finn C Cilius Nielsen
- Center for Genomic Medicine, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | | | - Kenneth Offit
- Department of Surgery, Seoul National University Bundang Hospital, Seongnam, Korea
- Clinical Genetics Service, Department of Medicine, Memorial Sloan-Kettering Cancer Center, New York, New York
| | - Edith Olah
- Department of Molecular Genetics, National Institute of Oncology, Budapest, Hungary
| | | | - Kai-Ren Ong
- West Midlands Regional Genetics Service, Birmingham Women's Hospital Healthcare NHS Trust, Birmingham, United Kingdom
| | - Ana Osorio
- Human Cancer Genetics Programme, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
- Biomedical Network on Rare Diseases (CIBERER), Madrid, Spain
| | - Claus-Eric Ott
- Institute for Medical Genetics and Human Genetics, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Domenico Palli
- Cancer Risk Factors and Life-Style Epidemiology Unit, Institute for Cancer Research, Prevention and Clinical Network (ISPRO), Florence, Italy
| | - Sue K Park
- Department of Preventive Medicine, Seoul National University College of Medicine, Seoul, Korea
- Department of Biomedical Sciences, Seoul National University Graduate School, Seoul, Korea
- Cancer Research Institute, Seoul National University, Seoul, Korea
| | - Michael T Parsons
- Department of Genetics and Computational Biology, QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Inge Sokilde Pedersen
- Section of Molecular Diagnostics, Clinical Biochemistry, Aalborg University Hospital, Aalborg, Denmark
| | - Bernard Peissel
- Unit of Medical Genetics, Department of Medical Oncology and Hematology, Fondazione IRCCS (Istituto di Ricovero e Cura a Carattere Scientifico), Istituto Nazionale dei Tumori di Milano, Milan, Italy
| | - Ana Peixoto
- Department of Genetics, Portuguese Oncology Institute, Porto, Portugal
| | - Pedro Pérez-Segura
- Department of Oncology, Hospital Clinico San Carlos, IdISSC, Madrid, Spain
| | - Paolo Peterlongo
- Genome Diagnostics Program, IFOM - the FIRC (Italian Foundation for Cancer Research) Institute of Molecular Oncology, Milan, Italy
| | | | - Mary E Porteous
- South East of Scotland Regional Genetics Service, Western General Hospital, Edinburgh, United Kingdom
| | - Miguel Angel Pujana
- Translational Research Laboratory, IDIBELL (Bellvitge Biomedical Research Institute), Catalan Institute of Oncology, CIBERONC, Barcelona, Spain
| | - Paolo Radice
- Unit of Molecular Bases of Genetic Risk and Genetic Testing, Department of Research, in Fondazione IRCCS (Istituto Di Ricovero e Cura a Carattere Scientifico) Istituto Nazionale dei Tumori (INT), Milan, Italy
| | - Juliane Ramser
- Division of Gynaecology and Obstetrics, Klinikum rechts der Isar der Technischen Universität München, Munich, Germany
| | | | - Muhammad U Rashid
- Molecular Genetics of Breast Cancer, German Cancer Research Center (DKFZ), Heidelberg, Germany
- Department of Basic Sciences, Shaukat Khanum Memorial Cancer Hospital and Research Centre (SKMCH & RC), Lahore, Pakistan
| | - Kerstin Rhiem
- Center for Integrated Oncology (CIO), University Hospital of Cologne, Cologne, Germany
- Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany
- Center for Hereditary Breast and Ovarian Cancer, University Hospital of Cologne, Cologne, Germany
| | - Piera Rizzolo
- Department of Molecular Medicine, University La Sapienza, Rome, Italy
| | - Mark E Robson
- Clinical Genetics Service, Department of Medicine, Memorial Sloan-Kettering Cancer Center, New York, New York
| | - Matti A Rookus
- Department of Epidemiology, The Netherlands Cancer Institute, Amsterdam, the Netherlands
| | - Caroline M Rossing
- Center for Genomic Medicine, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | | | - Catarina Santos
- Department of Genetics, Portuguese Oncology Institute, Porto, Portugal
| | - Claire Saule
- Service de Génétique, Institut Curie, Paris, France
| | - Rosa Scarpitta
- Section of Genetic Oncology, Department of Laboratory Medicine, University and University Hospital of Pisa, Pisa, Italy
| | - Rita K Schmutzler
- Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany
- Center for Hereditary Breast and Ovarian Cancer, University Hospital of Cologne, Cologne, Germany
| | - Hélène Schuster
- Unité d'Oncogénétique, Centre de Lutte Contre le Cancer Paul Strauss, Strasbourg, France
| | - Leigha Senter
- Clinical Cancer Genetics Program, Division of Human Genetics, Department of Internal Medicine, The Comprehensive Cancer Center, The Ohio State University, Columbus, Ohio
| | - Caroline M Seynaeve
- Department of Medical Oncology, Family Cancer Clinic, Erasmus MC Cancer Institute, Rotterdam, the Netherlands
| | - Payal D Shah
- Department of Medicine, Abramson Cancer Center, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Priyanka Sharma
- Department of Internal Medicine, Division of Oncology, University of Kansas Medical Center, Westwood, Kansas
| | - Vivian Y Shin
- Department of Surgery, The University of Hong Kong, Pok Fu Lam, Hong Kong
| | | | - Jacques Simard
- Genomics Center, Centre Hospitalier Universitaire de Québec - Université Laval, Research Centre, Québec City, Québec, Canada
| | - Christian F Singer
- Dept of OB/GYN and Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | | | - Katie Snape
- Medical Genetics Unit, St George's, University of London, London, United Kingdom
| | - Angela R Solano
- INBIOMED, Faculty of Medicine/CONICET and CEMIC, Department of Clinical Chemistry, Medical Direction, University of Buenos Aires, Buenos Aires, Argentina
| | - Penny Soucy
- Department of Internal Medicine, Division of Oncology, University of Kansas Medical Center, Westwood, Kansas
| | - Melissa C Southey
- Precision Medicine, School of Clinical Sciences at Monash Health, Monash University, Clayton, Victoria, Australia
- Department of Clinical Pathology, The University of Melbourne, Melbourne, Victoria, Australia
| | - Amanda B Spurdle
- Department of Genetics and Computational Biology, QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Linda Steele
- Department of Population Sciences, Beckman Research Institute of City of Hope, Duarte, California
| | - Doris Steinemann
- Institute of Cell and Molecular Pathology, Hannover Medical School, Hannover, Germany
| | - Dominique Stoppa-Lyonnet
- Service de Génétique, Institut Curie, Paris, France
- Department of Tumour Biology, INSERM U830, Paris, France
- Université Paris Descartes, Paris, France
| | - Agostina Stradella
- Genetic Counseling Unit, Hereditary Cancer Program, IDIBELL (Bellvitge Biomedical Research Institute), Catalan Institute of Oncology, CIBERONC, Barcelona, Spain
| | - Lone Sunde
- Department of Clinical Genetics, Aarhus University Hospital, Aarhus, Denmark
| | - Christian Sutter
- Institute of Human Genetics, University Hospital Heidelberg, Heidelberg, Germany
| | - Yen Y Tan
- Department of OB/GYN, Medical University of Vienna, Vienna, Austria
| | - Manuel R Teixeira
- Department of Genetics, Portuguese Oncology Institute, Porto, Portugal
- Biomedical Sciences Institute (ICBAS), University of Porto, Porto, Portugal
| | - Soo Hwang Teo
- Cancer Research Malaysia, Subang Jaya, Selangor, Malaysia
- Breast Cancer Research Unit, Cancer Research Institute, University Malaya Medical Centre, Kuala Lumpur, Malaysia
| | - Mads Thomassen
- Department of Clinical Genetics, Odense University Hospital, Odense, Denmark
| | | | - Marc Tischkowitz
- Program in Cancer Genetics, Departments of Human Genetics and Oncology, McGill University, Montréal, Quebec, Canada
- Department of Medical Genetics, University of Cambridge, Cambridge, United Kingdom
| | - Silvia Tognazzo
- Immunology and Molecular Oncology Unit, Veneto Institute of Oncology IOV - IRCCS, Padua, Italy
| | - Amanda E Toland
- Department of Cancer Biology and Genetics, The Ohio State University, Columbus, Ohio
| | | | - Diana Torres
- Molecular Genetics of Breast Cancer, German Cancer Research Center (DKFZ), Heidelberg, Germany
- Institute of Human Genetics, Pontificia Universidad Javeriana, Bogota, Colombia
| | - Angela Toss
- Department of Oncology and Haematology, University of Modena and Reggio Emilia, Modena, Italy
| | - Alison H Trainer
- Parkville Familial Cancer Centre, Peter MacCallum Cancer Center, Melbourne, Victoria, Australia
| | - Nadine Tung
- Department of Medical Oncology, Beth Israel Deaconess Medical Center, Boston, Massachusetts
| | - Christi J van Asperen
- Department of Clinical Genetics, Leiden University Medical Center, Leiden, the Netherlands
| | | | - Lizet E van der Kolk
- Family Cancer Clinic, The Netherlands Cancer Institute - Antoni van Leeuwenhoek Hospital, Amsterdam, the Netherlands
| | - Rob B van der Luijt
- Department of Medical Genetics, University Medical Center, Utrecht, the Netherlands
| | - Liselotte P van Hest
- Clinical Genetics, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands
| | - Liliana Varesco
- Unit of Hereditary Cancer, Department of Epidemiology, Prevention and Special Functions, IRCCS (Istituto di Ricovero e Cura a Carattere Scientifico) AOU San Martino, IST Istituto Nazionale per la Ricerca sul Cancro, Genoa, Italy
| | - Raymonda Varon-Mateeva
- Institute for Medical Genetics and Human Genetics, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Alessandra Viel
- Division of Functional Onco-genomics and Genetics, Centro di Riferimento Oncologico di Aviano (CRO), IRCCS, Aviano, Italy
| | | | - Roberta Villa
- Unit of Medical Genetics, Department of Medical Oncology and Hematology, Fondazione IRCCS (Istituto di Ricovero e Cura a Carattere Scientifico), Istituto Nazionale dei Tumori di Milano, Milan, Italy
| | | | - Philipp Wagner
- Department of Women's Health, Tubingen University Hospital, Tubingen, Germany
| | - Shan Wang-Gohrke
- Department of Gynaecology and Obstetrics, University Hospital Ulm, Ulm, Germany
| | - Barbara Wappenschmidt
- Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany
- Center for Hereditary Breast and Ovarian Cancer, University Hospital of Cologne, Cologne, Germany
| | | | - Greet Wieme
- Centre for Medical Genetics, Ghent University, Ghent, Belgium
| | | | - Drakoulis Yannoukakos
- Molecular Diagnostics Laboratory, INRASTES, National Centre for Scientific Research "Demokritos", Athens, Greece
| | - Sook-Yee Yoon
- Cancer Research Initiatives Foundation, Sime Darby Medical Centre, Subang Jaya, Selangor, Malaysia
| | - Cristina Zanzottera
- Unit of Medical Genetics, Department of Medical Oncology and Hematology, Fondazione IRCCS (Istituto di Ricovero e Cura a Carattere Scientifico), Istituto Nazionale dei Tumori di Milano, Milan, Italy
| | - Kristin K Zorn
- Magee-Womens Hospital, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Anthony V D'Amico
- Department of Radiation Oncology, Dana-Farber Cancer Institute and Brigham and Women's Hospital, Boston, Massachusetts
| | | | | | - Georgia Chenevix-Trench
- Department of Genetics and Computational Biology, QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Antonis C Antoniou
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, United Kingdom
| | - Susan L Neuhausen
- Department of Population Sciences, Beckman Research Institute of City of Hope, Duarte, California
| | - Laura Ottini
- Department of Molecular Medicine, University La Sapienza, Rome, Italy
| | | | - Timothy R Rebbeck
- Harvard T.H. Chan School of Public Health, Boston, Massachusetts.
- Dana-Farber Cancer Institute. Boston, Massachusetts
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Sun Y, McCorvie TJ, Yates LA, Zhang X. Structural basis of homologous recombination. Cell Mol Life Sci 2020; 77:3-18. [PMID: 31748913 PMCID: PMC6957567 DOI: 10.1007/s00018-019-03365-1] [Citation(s) in RCA: 69] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 10/10/2019] [Accepted: 10/31/2019] [Indexed: 12/12/2022]
Abstract
Homologous recombination (HR) is a pathway to faithfully repair DNA double-strand breaks (DSBs). At the core of this pathway is a DNA recombinase, which, as a nucleoprotein filament on ssDNA, pairs with homologous DNA as a template to repair the damaged site. In eukaryotes Rad51 is the recombinase capable of carrying out essential steps including strand invasion, homology search on the sister chromatid and strand exchange. Importantly, a tightly regulated process involving many protein factors has evolved to ensure proper localisation of this DNA repair machinery and its correct timing within the cell cycle. Dysregulation of any of the proteins involved can result in unchecked DNA damage, leading to uncontrolled cell division and cancer. Indeed, many are tumour suppressors and are key targets in the development of new cancer therapies. Over the past 40 years, our structural and mechanistic understanding of homologous recombination has steadily increased with notable recent advancements due to the advances in single particle cryo electron microscopy. These have resulted in higher resolution structural models of the signalling proteins ATM (ataxia telangiectasia mutated), and ATR (ataxia telangiectasia and Rad3-related protein), along with various structures of Rad51. However, structural information of the other major players involved, such as BRCA1 (breast cancer type 1 susceptibility protein) and BRCA2 (breast cancer type 2 susceptibility protein), has been limited to crystal structures of isolated domains and low-resolution electron microscopy reconstructions of the full-length proteins. Here we summarise the current structural understanding of homologous recombination, focusing on key proteins in recruitment and signalling events as well as the mediators for the Rad51 recombinase.
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Affiliation(s)
- Yueru Sun
- Section of Structural Biology, Department of Infectious Diseases, Imperial College, London, SW7 2AZ, UK
| | - Thomas J McCorvie
- Section of Structural Biology, Department of Infectious Diseases, Imperial College, London, SW7 2AZ, UK
| | - Luke A Yates
- Section of Structural Biology, Department of Infectious Diseases, Imperial College, London, SW7 2AZ, UK
| | - Xiaodong Zhang
- Section of Structural Biology, Department of Infectious Diseases, Imperial College, London, SW7 2AZ, UK.
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Functional Impacts of the BRCA1-mTORC2 Interaction in Breast Cancer. Int J Mol Sci 2019; 20:ijms20235876. [PMID: 31771139 PMCID: PMC6928641 DOI: 10.3390/ijms20235876] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 11/20/2019] [Accepted: 11/21/2019] [Indexed: 12/26/2022] Open
Abstract
Deleterious mutations in Breast Cancer 1 (BRCA1) are associated with an increased risk of breast and ovarian cancer. Mutations in the tandem BRCA1 C-terminal (tBRCT) protein domain disrupt critical protein interactions required for the faithful repair of DNA through homologous recombination, which contributes to oncogenesis. Our studies have identified RICTOR, PRR5, and SIN1 subunits of the mammalian target of rapamycin complex 2 (mTORC2) as interacting partners with the tBRCT domain of BRCA1 leading to the disruption of the mTORC2 complex. However, the interplay between mTORC2 signaling and BRCA1 function in the DNA damage response (DDR) remains to be determined. In this study, we used protein interaction assays to determine the binary interactions between the tBRCT domain and mTORC2 subunits, evaluated the impact of mTOR inhibition on the transcriptional function of the tBRCT, evaluated the impact of mTOR signaling on BRCA1 recruitment to DNA damage-induced foci and determined the breast cancer cell line response to mTOR inhibition dependent upon BRCA1 expression and mutation. This study determined that PRR5, RICTOR, and SIN1 could each independently interact with the BRCA1 tBRCT. Inhibition of mTORC1, but not mTORC1/2, increases BRCA1 transcriptional activation activity. Treatment with pan-mTOR inhibitor PP242 diminishes DNA damage-induced γH2AX and BRCA1 foci formation. Breast cancer cells lacking expression of functional BRCA1 are more sensitive to mTOR inhibitors. These data suggest that mTOR signaling is required for BRCA1 response to DNA damage and breast cancer cells lacking BRCA1 are more sensitive to pan-mTOR inhibition. This work suggests chemotherapeutic strategies using mTOR inhibitors could be tailored for patients that lack functional BRCA1.
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Afzal A, Thayyil MS, Shariq M, Mary YS, Resmi KS, Thomas R, Islam N, Abinu AJ. Anti‐Cancerous Brucine and Colchicine: Experimental and Theoretical Characterization. ChemistrySelect 2019. [DOI: 10.1002/slct.201902698] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Aboothahir Afzal
- Department of PhysicsCalicut University, Malappuram district Kerala
- Department of PhysicsGovt. Arts and Science college Calicut Kerala
| | | | - Mohammad Shariq
- Department of PhysicsFaculty of ScienceJazan University, Jazan Saudi Arabia
| | - Yohannan Sheena Mary
- Department of PhysicsFatima Mata National College(Autonomous), Kollam, Kerala India
| | | | - Renjith Thomas
- Department of ChemistrySt. Berchmans College (Autonomous), Changanasserry, Kerala India
| | - Nasarul Islam
- Department of ChemistryGovt. Degree College, Sopore, J&K-193201 India
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Kurdekar V, Giridharan S, Subbarao J, Nijaguna MB, Periasamy J, Boggaram S, Shivange AV, Sadasivam G, Padigaru M, Potluri V, Venkitaraman AR, Bharatham K. Structure-Guided Synthesis and Evaluation of Small-Molecule Inhibitors Targeting Protein-Protein Interactions of BRCA1 tBRCT Domain. ChemMedChem 2019; 14:1620-1632. [PMID: 31334915 DOI: 10.1002/cmdc.201900300] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2019] [Revised: 07/20/2019] [Indexed: 01/09/2023]
Abstract
The tandem BRCT domains (tBRCT) of BRCA1 engage phosphoserine-containing motifs in target proteins to propagate intracellular signals initiated by DNA damage, thereby controlling cell cycle arrest and DNA repair. Recently, we identified Bractoppin, the first small-molecule inhibitor of the BRCA1 tBRCT domain, which selectively interrupts BRCA1-mediated cellular responses evoked by DNA damage. Here, we combine structure-guided chemical elaboration, protein mutagenesis and cellular assays to define the structural features responsible for Bractoppin's activity. Bractoppin fails to bind mutant forms of BRCA1 tBRCT bearing K1702A, a key residue mediating phosphopeptide recognition, or F1662R or L1701K that adjoin the pSer-recognition site. However, the M1775R mutation, which engages the Phe residue in the consensus phosphopeptide motif pSer-X-X-Phe, does not affect Bractoppin binding, confirming a binding mode distinct from the substrate phosphopeptide binding. We explored these structural features through structure-guided chemical elaboration and characterized structure-activity relationships (SARs) in biochemical assays. Two analogues, CCBT2088 and CCBT2103 were effective in abrogating BRCA1 foci formation and inhibiting G2 arrest induced by irradiation of cells. Collectively, our findings reveal structural features underlying the activity of a novel inhibitor of phosphopeptide recognition by the BRCA1 tBRCT domain, providing fresh insights to guide the development of inhibitors that target protein-protein interactions.
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Affiliation(s)
- Vadiraj Kurdekar
- Center for Chemical Biology & Therapeutics, InStem, Bellary Road, Bangalore, Karnataka, 560065, India
| | - Saranya Giridharan
- Center for Chemical Biology & Therapeutics, InStem, Bellary Road, Bangalore, Karnataka, 560065, India
| | - Jasti Subbarao
- Center for Chemical Biology & Therapeutics, InStem, Bellary Road, Bangalore, Karnataka, 560065, India
| | - Mamatha B Nijaguna
- Center for Chemical Biology & Therapeutics, InStem, Bellary Road, Bangalore, Karnataka, 560065, India
| | - Jayaprakash Periasamy
- Center for Chemical Biology & Therapeutics, InStem, Bellary Road, Bangalore, Karnataka, 560065, India
| | - Sanjana Boggaram
- Center for Chemical Biology & Therapeutics, InStem, Bellary Road, Bangalore, Karnataka, 560065, India
| | - Amol V Shivange
- Center for Chemical Biology & Therapeutics, InStem, Bellary Road, Bangalore, Karnataka, 560065, India
| | - Gayathri Sadasivam
- Center for Chemical Biology & Therapeutics, InStem, Bellary Road, Bangalore, Karnataka, 560065, India
| | - Muralidhara Padigaru
- Center for Chemical Biology & Therapeutics, InStem, Bellary Road, Bangalore, Karnataka, 560065, India
| | - Vijay Potluri
- Center for Chemical Biology & Therapeutics, InStem, Bellary Road, Bangalore, Karnataka, 560065, India
| | - Ashok R Venkitaraman
- Center for Chemical Biology & Therapeutics, InStem, Bellary Road, Bangalore, Karnataka, 560065, India.,Medical Research Council Cancer Unit, University of Cambridge, Hills Road, Cambridge, CB2 0XZ, UK
| | - Kavitha Bharatham
- Center for Chemical Biology & Therapeutics, InStem, Bellary Road, Bangalore, Karnataka, 560065, India
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41
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Fernandes VC, Golubeva VA, Di Pietro G, Shields C, Amankwah K, Nepomuceno TC, de Gregoriis G, Abreu RBV, Harro C, Gomes TT, Silva RF, Suarez-Kurtz G, Couch FJ, Iversen ES, Monteiro ANA, Carvalho MA. Impact of amino acid substitutions at secondary structures in the BRCT domains of the tumor suppressor BRCA1: Implications for clinical annotation. J Biol Chem 2019; 294:5980-5992. [PMID: 30765603 DOI: 10.1074/jbc.ra118.005274] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Revised: 02/06/2019] [Indexed: 01/07/2023] Open
Abstract
Genetic testing for BRCA1, a DNA repair protein, can identify carriers of pathogenic variants associated with a substantially increased risk for breast and ovarian cancers. However, an association with increased risk is unclear for a large fraction of BRCA1 variants present in the human population. Most of these variants of uncertain clinical significance lead to amino acid changes in the BRCA1 protein. Functional assays are valuable tools to assess the potential pathogenicity of these variants. Here, we systematically probed the effects of substitutions in the C terminus of BRCA1: the N- and C-terminal borders of its tandem BRCT domain, the BRCT-[N-C] linker region, and the α1 and α'1 helices in BRCT-[N] and -[C]. Using a validated transcriptional assay based on a fusion of the GAL4 DNA-binding domain to the BRCA1 C terminus (amino acids 1396-1863), we assessed the functional impact of 99 missense variants of BRCA1. We include the data obtained for these 99 missense variants in a joint analysis to generate the likelihood of pathogenicity for 347 missense variants in BRCA1 using VarCall, a Bayesian integrative statistical model. The results from this analysis increase our understanding of BRCA1 regions less tolerant to changes, identify functional borders of structural domains, and predict the likelihood of pathogenicity for 98% of all BRCA1 missense variants in this region recorded in the population. This knowledge will be critical for improving risk assessment and clinical treatment of carriers of BRCA1 variants.
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Affiliation(s)
- Vanessa C Fernandes
- From the Instituto Nacional de Câncer, Programa de Pesquisa Clínica, Rio de Janeiro, Brazil 20231-050
| | - Volha A Golubeva
- the Cancer Epidemiology Program, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida 33612
| | - Giuliano Di Pietro
- the Cancer Epidemiology Program, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida 33612; the Universidade Federal de Sergipe, Campus São Cristóvão, Brazil 49100-000
| | - Cara Shields
- the Cancer Epidemiology Program, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida 33612
| | - Kwabena Amankwah
- the Cancer Epidemiology Program, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida 33612
| | - Thales C Nepomuceno
- From the Instituto Nacional de Câncer, Programa de Pesquisa Clínica, Rio de Janeiro, Brazil 20231-050; the Cancer Epidemiology Program, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida 33612
| | - Giuliana de Gregoriis
- From the Instituto Nacional de Câncer, Programa de Pesquisa Clínica, Rio de Janeiro, Brazil 20231-050
| | - Renata B V Abreu
- From the Instituto Nacional de Câncer, Programa de Pesquisa Clínica, Rio de Janeiro, Brazil 20231-050
| | - Carly Harro
- the Cancer Epidemiology Program, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida 33612; the Department of Cell Biology, Microbiology, College of Arts and Sciences, University of South Florida Cancer Biology Ph.D. Program, Tampa, Florida 33612
| | - Thiago T Gomes
- the Instituto Federal do Rio de Janeiro, Rio de Janeiro 20270-021, Brazil
| | - Ricceli F Silva
- the Instituto Federal do Rio de Janeiro, Rio de Janeiro 20270-021, Brazil
| | - Guilherme Suarez-Kurtz
- From the Instituto Nacional de Câncer, Programa de Pesquisa Clínica, Rio de Janeiro, Brazil 20231-050
| | - Fergus J Couch
- the Department of Laboratory Medicine, Mayo Clinic, Rochester, Minnesota 55905
| | - Edwin S Iversen
- the Department of Statistics, Duke University, Durham, North Carolina 27710
| | - Alvaro N A Monteiro
- the Cancer Epidemiology Program, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida 33612.
| | - Marcelo A Carvalho
- From the Instituto Nacional de Câncer, Programa de Pesquisa Clínica, Rio de Janeiro, Brazil 20231-050.
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42
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Wang Y, Niu H, Hu Z, Zhu M, Wang L, Han L, Qian L, Tian K, Yuan H, Lou H. Targeting the lysosome by an aminomethylated Riccardin D triggers DNA damage through cathepsin B-mediated degradation of BRCA1. J Cell Mol Med 2018; 23:1798-1812. [PMID: 30565390 PMCID: PMC6378192 DOI: 10.1111/jcmm.14077] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 11/12/2018] [Accepted: 11/13/2018] [Indexed: 12/21/2022] Open
Abstract
RD-N, an aminomethylated derivative of riccardin D, is a lysosomotropic agent that can trigger lysosomal membrane permeabilization followed by cathepsin B (CTSB)-dependent apoptosis in prostate cancer (PCa) cells, but the underlying mechanisms remain unknown. Here we show that RD-N treatment drives CTSB translocation from the lysosomes to the nucleus where it promotes DNA damage by suppression of the breast cancer 1 protein (BRCA1). Inhibition of CTSB activity with its specific inhibitors, or by CTSB-targeting siRNA or CTSB with enzyme-negative domain attenuated activation of BRCA1 and DNA damage induced by RD-N. Conversely, CTSB overexpression resulted in inhibition of BRCA1 and sensitized PCa cells to RD-N-induced cell death. Furthermore, RD-N-induced cell death was exacerbated in BRCA1-deficient cancer cells. We also demonstrated that CTSB/BRCA1-dependent DNA damage was critical for RD-N, but not for etoposide, reinforcing the importance of CTSB/BRCA1 in RD-N-mediated cell death. In addition, RD-N synergistically increased cell sensitivity to cisplatin, and this effect was more evidenced in BRCA1-deficient cancer cells. This study reveals a novel molecular mechanism that RD-N promotes CTSB-dependent DNA damage by the suppression of BRCA1 in PCa cells, leading to the identification of a potential compound that target lysosomes for cancer treatment.
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Affiliation(s)
- Yanyan Wang
- Key Lab of Chemical Biology of Ministry of Education, Department of Natural Product Chemistry, School of Pharmaceutical sciences, Shandong University, Jinan, China
| | - Huanmin Niu
- Institute of Medical Science, The Second Hospital of Shandong University, Jinan, China
| | - Zhongyi Hu
- Department of Biochemistry and Molecular Biology, School of Medicine, Shandong University, Jinan, China
| | - Mengyuan Zhu
- Key Lab of Chemical Biology of Ministry of Education, Department of Natural Product Chemistry, School of Pharmaceutical sciences, Shandong University, Jinan, China
| | - Lining Wang
- Key Lab of Chemical Biology of Ministry of Education, Department of Natural Product Chemistry, School of Pharmaceutical sciences, Shandong University, Jinan, China
| | - Lili Han
- School of Medicine, Shandong Yingcai University, Jinan, China
| | - Lilin Qian
- Institute of Medical Science, The Second Hospital of Shandong University, Jinan, China
| | - Keli Tian
- Department of Biochemistry and Molecular Biology, School of Medicine, Shandong University, Jinan, China
| | - Huiqing Yuan
- Institute of Medical Science, The Second Hospital of Shandong University, Jinan, China
| | - Hongxiang Lou
- Key Lab of Chemical Biology of Ministry of Education, Department of Natural Product Chemistry, School of Pharmaceutical sciences, Shandong University, Jinan, China
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43
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Non-Coding Variants in BRCA1 and BRCA2 Genes: Potential Impact on Breast and Ovarian Cancer Predisposition. Cancers (Basel) 2018; 10:cancers10110453. [PMID: 30453575 PMCID: PMC6266896 DOI: 10.3390/cancers10110453] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Revised: 11/04/2018] [Accepted: 11/12/2018] [Indexed: 12/21/2022] Open
Abstract
BRCA1 and BRCA2 are major breast cancer susceptibility genes whose pathogenic variants are associated with a significant increase in the risk of breast and ovarian cancers. Current genetic screening is generally limited to BRCA1/2 exons and intron/exon boundaries. Most identified pathogenic variants cause the partial or complete loss of function of the protein. However, it is becoming increasingly clear that variants in these regions only account for a small proportion of cancer risk. The role of variants in non-coding regions beyond splice donor and acceptor sites, including those that have no qualitative effect on the protein, has not been thoroughly investigated. The key transcriptional regulatory elements of BRCA1 and BRCA2 are housed in gene promoters, untranslated regions, introns, and long-range elements. Within these sequences, germline and somatic variants have been described, but the clinical significance of the majority is currently unknown and it remains a significant clinical challenge. This review summarizes the available data on the impact of variants on non-coding regions of BRCA1/2 genes and their role on breast and ovarian cancer predisposition.
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44
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Sayin K. Investigation of structural and biological properties of N-heterocyclic carbene silver(I) and palladium(II) complexes. J COORD CHEM 2018. [DOI: 10.1080/00958972.2018.1511050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Koray Sayin
- Department of Chemistry, Faculty of Science, Sivas Cumhuriyet University, Sivas, Turkey
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45
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Vasil'eva IA, Anarbaev RO, Moor NA, Lavrik OI. Dynamic light scattering study of base excision DNA repair proteins and their complexes. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2018; 1867:297-305. [PMID: 30321662 DOI: 10.1016/j.bbapap.2018.10.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 08/21/2018] [Accepted: 10/09/2018] [Indexed: 01/01/2023]
Abstract
Base excision repair (BER) involves many enzymes acting in a coordinated fashion at the most common types of DNA damage. The coordination is facilitated by interactions between the enzymes and accessory proteins, X-ray repair cross-complementing protein 1 (XRCC1) and poly(ADP-ribose) polymerase 1 (PARP1). Here we use dynamic light scattering (DLS) technique to determine the hydrodynamic sizes of several BER enzymes and proteins, DNA polymerase β (Polβ), apurinic/apyrimidinic endonuclease 1 (APE1), tyrosyl-DNA phosphodiesterase 1 (TDP1), XRCC1 and PARP1, present alone or in the equimolar mixtures with each other. From the DLS data combined with glutaraldehyde cross-linking experiments and previous quantitative binding data the oligomeric states of BER proteins and their complexes are estimated. All the proteins have been proposed to form homodimers upon their self-association. The most probable oligomerization state of the binary complexes formed by PARP1 with various proteins is a heterotetramer. The oligomerization state of the binary complexes formed by XRCC1 varies from heterodimer to heterotetramer, depending on the partner. The DLS technique is applied for the first time to measure the hydrodynamic sizes of PARP1 molecules covalently bound with poly(ADP-ribose) (PAR) synthesized upon the automodification reaction. PARP1 has been detected to form huge conglomerates stabilized by Mg2+ coordinated bonds with PAR polymers.
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Affiliation(s)
- Inna A Vasil'eva
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences, Novosibirsk 630090, Russia
| | - Rashid O Anarbaev
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences, Novosibirsk 630090, Russia; Department of Natural Sciences, Novosibirsk State University, Novosibirsk 630090, Russia
| | - Nina A Moor
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences, Novosibirsk 630090, Russia; Department of Natural Sciences, Novosibirsk State University, Novosibirsk 630090, Russia
| | - Olga I Lavrik
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences, Novosibirsk 630090, Russia; Department of Natural Sciences, Novosibirsk State University, Novosibirsk 630090, Russia.
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46
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Petitalot A, Dardillac E, Jacquet E, Nhiri N, Guirouilh-Barbat J, Julien P, Bouazzaoui I, Bonte D, Feunteun J, Schnell JA, Lafitte P, Aude JC, Noguès C, Rouleau E, Lidereau R, Lopez BS, Zinn-Justin S, Caputo SM. Combining Homologous Recombination and Phosphopeptide-binding Data to Predict the Impact of BRCA1 BRCT Variants on Cancer Risk. Mol Cancer Res 2018; 17:54-69. [PMID: 30257991 DOI: 10.1158/1541-7786.mcr-17-0357] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Revised: 02/07/2018] [Accepted: 09/11/2018] [Indexed: 11/16/2022]
Abstract
BRCA1 mutations have been identified that increase the risk of developing hereditary breast and ovarian cancers. Genetic screening is now offered to patients with a family history of cancer, to adapt their treatment and the management of their relatives. However, a large number of BRCA1 variants of uncertain significance (VUS) are detected. To better understand the significance of these variants, a high-throughput structural and functional analysis was performed on a large set of BRCA1 VUS. Information on both cellular localization and homology-directed DNA repair (HR) capacity was obtained for 78 BRCT missense variants in the UMD-BRCA1 database and measurement of the structural stability and phosphopeptide-binding capacities was performed for 42 mutated BRCT domains. This extensive and systematic analysis revealed that most characterized causal variants affect BRCT-domain solubility in bacteria and all impair BRCA1 HR activity in cells. Furthermore, binding to a set of 5 different phosphopeptides was tested: all causal variants showed phosphopeptide-binding defects and no neutral variant showed such defects. A classification is presented on the basis of mutated BRCT domain solubility, phosphopeptide-binding properties, and VUS HR capacity. These data suggest that HR-defective variants, which present, in addition, BRCT domains either insoluble in bacteria or defective for phosphopeptide binding, lead to an increased cancer risk. Furthermore, the data suggest that variants with a WT HR activity and whose BRCT domains bind with a WT affinity to the 5 phosphopeptides are neutral. The case of variants with WT HR activity and defective phosphopeptide binding should be further characterized, as this last functional defect might be sufficient per se to lead to tumorigenesis. IMPLICATIONS: The analysis of the current study on BRCA1 structural and functional defects on cancer risk and classification presented may improve clinical interpretation and therapeutic selection.
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Affiliation(s)
- Ambre Petitalot
- Service de Génétique, Département de Biologie des Tumeurs, Institut Curie, Paris, France.,Institut de Biologie Intégrative de la Cellule, CEA, CNRS, Université Paris Sud, UMR 9198, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Elodie Dardillac
- Institut Gustave Roussy, CNRS UMR 8200, Université Paris-Saclay, Villejuif, France.,Team labeled "Ligue 2014," Villejuif, France
| | - Eric Jacquet
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Naima Nhiri
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Josée Guirouilh-Barbat
- Institut Gustave Roussy, CNRS UMR 8200, Université Paris-Saclay, Villejuif, France.,Team labeled "Ligue 2014," Villejuif, France
| | - Patrick Julien
- Service de Génétique, Département de Biologie des Tumeurs, Institut Curie, Paris, France
| | - Isslam Bouazzaoui
- Institut de Biologie Intégrative de la Cellule, CEA, CNRS, Université Paris Sud, UMR 9198, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Dorine Bonte
- Institut Gustave Roussy, CNRS UMR 8200, Université Paris-Saclay, Villejuif, France
| | - Jean Feunteun
- Institut Gustave Roussy, CNRS UMR 8200, Université Paris-Saclay, Villejuif, France
| | - Jeff A Schnell
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Philippe Lafitte
- Service de Génétique, Département de Biologie des Tumeurs, Institut Curie, Paris, France
| | - Jean-Christophe Aude
- Institut de Biologie Intégrative de la Cellule, CEA, CNRS, Université Paris Sud, UMR 9198, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Catherine Noguès
- Service de Génétique, Département de Biologie des Tumeurs, Institut Curie, Paris, France
| | - Etienne Rouleau
- Service de Génétique, Département de Biologie des Tumeurs, Institut Curie, Paris, France
| | - Rosette Lidereau
- Service de Génétique, Département de Biologie des Tumeurs, Institut Curie, Paris, France
| | - Bernard S Lopez
- Institut Gustave Roussy, CNRS UMR 8200, Université Paris-Saclay, Villejuif, France.,Team labeled "Ligue 2014," Villejuif, France
| | - Sophie Zinn-Justin
- Institut de Biologie Intégrative de la Cellule, CEA, CNRS, Université Paris Sud, UMR 9198, Université Paris-Saclay, Gif-sur-Yvette, France.
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47
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Periasamy J, Kurdekar V, Jasti S, Nijaguna MB, Boggaram S, Hurakadli MA, Raina D, Kurup LM, Chintha C, Manjunath K, Goyal A, Sadasivam G, Bharatham K, Padigaru M, Potluri V, Venkitaraman AR. Targeting Phosphopeptide Recognition by the Human BRCA1 Tandem BRCT Domain to Interrupt BRCA1-Dependent Signaling. Cell Chem Biol 2018; 25:677-690.e12. [PMID: 29606576 PMCID: PMC6015222 DOI: 10.1016/j.chembiol.2018.02.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 11/24/2017] [Accepted: 02/22/2018] [Indexed: 02/06/2023]
Abstract
Intracellular signals triggered by DNA breakage flow through proteins containing BRCT (BRCA1 C-terminal) domains. This family, comprising 23 conserved phosphopeptide-binding modules in man, is inaccessible to small-molecule chemical inhibitors. Here, we develop Bractoppin, a drug-like inhibitor of phosphopeptide recognition by the human BRCA1 tandem (t)BRCT domain, which selectively inhibits substrate binding with nanomolar potency in vitro. Structure-activity exploration suggests that Bractoppin engages BRCA1 tBRCT residues recognizing pSer in the consensus motif, pSer-Pro-Thr-Phe, plus an abutting hydrophobic pocket that is distinct in structurally related BRCT domains, conferring selectivity. In cells, Bractoppin inhibits substrate recognition detected by Förster resonance energy transfer, and diminishes BRCA1 recruitment to DNA breaks, in turn suppressing damage-induced G2 arrest and assembly of the recombinase, RAD51. But damage-induced MDC1 recruitment, single-stranded DNA (ssDNA) generation, and TOPBP1 recruitment remain unaffected. Thus, an inhibitor of phosphopeptide recognition selectively interrupts BRCA1 tBRCT-dependent signals evoked by DNA damage. Bractoppin selectively blocks phosphopeptide recognition by the BRCA1 tBRCT domain Bractoppin engages tBRCT residues recognizing pSer, plus an adjacent pocket Bractoppin interrupts BRCA1 tBRCT-dependent cellular signals evoked by DNA damage This work opens avenues to inhibit intracellular signaling by the tBRCT domain family
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Affiliation(s)
- Jayaprakash Periasamy
- Center for Chemical Biology & Therapeutics, InSTEM, Bellary Road, Bangalore, Karnataka 560065, India
| | - Vadiraj Kurdekar
- Center for Chemical Biology & Therapeutics, InSTEM, Bellary Road, Bangalore, Karnataka 560065, India
| | - Subbarao Jasti
- Center for Chemical Biology & Therapeutics, InSTEM, Bellary Road, Bangalore, Karnataka 560065, India
| | - Mamatha B Nijaguna
- Center for Chemical Biology & Therapeutics, InSTEM, Bellary Road, Bangalore, Karnataka 560065, India
| | - Sanjana Boggaram
- Center for Chemical Biology & Therapeutics, InSTEM, Bellary Road, Bangalore, Karnataka 560065, India
| | - Manjunath A Hurakadli
- Center for Chemical Biology & Therapeutics, InSTEM, Bellary Road, Bangalore, Karnataka 560065, India
| | - Dhruv Raina
- Center for Chemical Biology & Therapeutics, InSTEM, Bellary Road, Bangalore, Karnataka 560065, India
| | - Lokavya Meenakshi Kurup
- Center for Chemical Biology & Therapeutics, InSTEM, Bellary Road, Bangalore, Karnataka 560065, India
| | - Chetan Chintha
- Center for Chemical Biology & Therapeutics, InSTEM, Bellary Road, Bangalore, Karnataka 560065, India
| | - Kavyashree Manjunath
- Center for Chemical Biology & Therapeutics, InSTEM, Bellary Road, Bangalore, Karnataka 560065, India
| | - Aneesh Goyal
- Center for Chemical Biology & Therapeutics, InSTEM, Bellary Road, Bangalore, Karnataka 560065, India
| | - Gayathri Sadasivam
- Center for Chemical Biology & Therapeutics, InSTEM, Bellary Road, Bangalore, Karnataka 560065, India
| | - Kavitha Bharatham
- Center for Chemical Biology & Therapeutics, InSTEM, Bellary Road, Bangalore, Karnataka 560065, India
| | - Muralidhara Padigaru
- Center for Chemical Biology & Therapeutics, InSTEM, Bellary Road, Bangalore, Karnataka 560065, India
| | - Vijay Potluri
- Center for Chemical Biology & Therapeutics, InSTEM, Bellary Road, Bangalore, Karnataka 560065, India
| | - Ashok R Venkitaraman
- Center for Chemical Biology & Therapeutics, InSTEM, Bellary Road, Bangalore, Karnataka 560065, India; Medical Research Council Cancer Unit, University of Cambridge, Hills Road, Cambridge CB2 0XZ, UK.
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48
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Gilmore BL, Varano AC, Dearnaley W, Liang Y, Marcinkowski BC, Dukes MJ, Kelly DF. Preparation of Tunable Microchips to Visualize Native Protein Complexes for Single-Particle Electron Microscopy. Methods Mol Biol 2018; 1764:45-58. [PMID: 29605907 DOI: 10.1007/978-1-4939-7759-8_3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Recent advances in technology have enabled single-particle electron microscopy (EM) to rapidly progress as a preferred tool to study protein assemblies. Newly developed materials and methods present viable alternatives to traditional EM specimen preparation. Improved lipid monolayer purification reagents offer considerable flexibility, while ultrathin silicon nitride films provide superior imaging properties to the structural study of protein complexes. Here, we describe the steps for combining monolayer purification with silicon nitride microchips to create a tunable approach for the EM community.
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Affiliation(s)
| | - A Cameron Varano
- Virginia Tech Carilion Research Institute, Roanoke, VA, USA.,Translational Biology, Medicine, and Health Graduate Program, Virginia Tech, Blacksburg, VA, USA
| | | | - Yanping Liang
- Virginia Tech Carilion Research Institute, Roanoke, VA, USA
| | | | | | - Deborah F Kelly
- Virginia Tech Carilion Research Institute, Roanoke, VA, USA. .,Department of Biological Sciences, Virginia Tech, Blacksburg, VA, USA.
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49
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Mylavarapu S, Das A, Roy M. Role of BRCA Mutations in the Modulation of Response to Platinum Therapy. Front Oncol 2018. [PMID: 29459887 DOI: 10.3389/fonc.2018.00016] [] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Recent years have seen cancer emerge as one of the leading cause of mortality worldwide with breast cancer being the second most common cause of death among women. Individuals harboring BRCA mutations are at a higher risk of developing breast and/or ovarian cancers. This risk is much greater in the presence of germline mutations. BRCA1 and BRCA2 play crucial role in the DNA damage response and repair pathway, a function that is critical in preserving the integrity of the genome. Mutations that interfere with normal cellular function of BRCA not only lead to onset and progression of cancer but also modulate therapy outcome of treatment with platinum drugs. In this review, we discuss the structural and functional impact of some of the prevalent BRCA mutations in breast and ovarian cancers and their role in platinum therapy response. Understanding the response of platinum drugs in the context of BRCA mutations may contribute toward developing better therapeutics that can improve survival and quality of life of patients.
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Affiliation(s)
- Sanghamitra Mylavarapu
- Invictus Oncology Pvt. Ltd., Delhi, India.,Department of Biotechnology, Delhi Technological University, Delhi, India
| | - Asmita Das
- Department of Biotechnology, Delhi Technological University, Delhi, India
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50
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Mylavarapu S, Das A, Roy M. Role of BRCA Mutations in the Modulation of Response to Platinum Therapy. Front Oncol 2018; 8:16. [PMID: 29459887 PMCID: PMC5807680 DOI: 10.3389/fonc.2018.00016] [Citation(s) in RCA: 95] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Accepted: 01/17/2018] [Indexed: 12/11/2022] Open
Abstract
Recent years have seen cancer emerge as one of the leading cause of mortality worldwide with breast cancer being the second most common cause of death among women. Individuals harboring BRCA mutations are at a higher risk of developing breast and/or ovarian cancers. This risk is much greater in the presence of germline mutations. BRCA1 and BRCA2 play crucial role in the DNA damage response and repair pathway, a function that is critical in preserving the integrity of the genome. Mutations that interfere with normal cellular function of BRCA not only lead to onset and progression of cancer but also modulate therapy outcome of treatment with platinum drugs. In this review, we discuss the structural and functional impact of some of the prevalent BRCA mutations in breast and ovarian cancers and their role in platinum therapy response. Understanding the response of platinum drugs in the context of BRCA mutations may contribute toward developing better therapeutics that can improve survival and quality of life of patients.
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Affiliation(s)
- Sanghamitra Mylavarapu
- Invictus Oncology Pvt. Ltd., Delhi, India.,Department of Biotechnology, Delhi Technological University, Delhi, India
| | - Asmita Das
- Department of Biotechnology, Delhi Technological University, Delhi, India
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