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Canadas-Sousa A, Santos M, Dias-Pereira P. Protective Effect of HER2 Gene Polymorphism rs24537331 in the Outcome of Canine Mammary Tumors. Animals (Basel) 2023; 13:ani13081384. [PMID: 37106947 PMCID: PMC10135387 DOI: 10.3390/ani13081384] [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: 02/10/2023] [Revised: 04/11/2023] [Accepted: 04/14/2023] [Indexed: 04/29/2023] Open
Abstract
The role of HER2 in canine mammary tumors is not completely elucidated, and the contradictory results published so far may be, in part, explained by the genetic variability recognized in the canine HER2 gene. Single nucleotide polymorphism (SNPs) in HER2 were recently associated with less aggressive canine mammary tumor histotypes. This study assesses the relationship between SNPs rs24537329 and rs24537331 in canine HER2 gene and clinicopathological characteristics and outcome of mammary tumors in a group of 206 female dogs. Allelic variants were observed in 69.8% and 52.7% of the dogs for SNP rs24537329 and rs24537331, respectively. Our results demonstrated that SNP rs24537331 was associated with decreased tumoral necrosis (HR: 3.09; p = 0.012) and with longer disease-specific overall survival (HR: 2.59; p = 0.013). However, no statistically significant associations were found between SNP rs24537329 and the tumors' clinicopathological characteristics or survival. Our data suggest that SNP rs24537331 may have a protective effect in canine mammary tumors, allowing the identification of a subgroup of animals prone to develop less aggressive forms of the disease. This study emphasizes the importance of the genetic tests associated with clinical images and histological examinations when assessing CMT outcomes.
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Affiliation(s)
- Ana Canadas-Sousa
- Department of Pathology and Molecular Immunology, Instituto de Ciências Biomédicas Abel Salazar, ICBAS-UP, University of Porto, 4050-313 Porto, Portugal
| | - Marta Santos
- Department of Microscopy, Instituto de Ciências Biomédicas Abel Salazar, ICBAS-UP, University of Porto, 4050-313 Porto, Portugal
| | - Patrícia Dias-Pereira
- Department of Pathology and Molecular Immunology, Instituto de Ciências Biomédicas Abel Salazar, ICBAS-UP, University of Porto, 4050-313 Porto, Portugal
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2
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Pamuła-Piłat J, Tęcza K, Kalinowska-Herok M, Grzybowska E. Genetic 3'UTR variations and clinical factors significantly contribute to survival prediction and clinical response in breast cancer patients. Sci Rep 2020; 10:5736. [PMID: 32235849 PMCID: PMC7109149 DOI: 10.1038/s41598-020-62662-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Accepted: 03/13/2020] [Indexed: 11/09/2022] Open
Abstract
The study describes a relationship between the 3′UTR variants, clinicopathological parameters and response to chemotherapy. We analyzed 33 germline polymorphisms in 3′UTRs of ADME genes in 305 breast cancer women treated with FAC regime. Clinical endpoints of this study were: overall survival (OS), progression-free survival (PFS), recurrence-free survival (RFS) and overall response defined as treatment failure-free survival (TFFS). The shortened OS was connected with the presence of NR1/2 rs3732359 AA, SLC22A16 rs7756222 CC, as well as SLC22A16 rs9487402 allele G and clinical factors belonging to TNM classification: tumor size >1 cm, nodal involvement and presence of metastases. PFS was related to two polymorphisms PGR rs1824125 GG, PGR rs12224560 CC and SLC22A16 rs7756222 CC as well as preexisting metastases. The RFS was shortened due to the DPYD rs291593 CC, AKR1C3 rs3209896 AG and negative expression of PGR. The presence of ALDH5A1 rs1054899 allele A, lack of pre-chemotherapy surgery and negative status of PGR correlated with worse treatment response. The germline variants commonly present in the population are important factors determining the response to treatment. We observed the effect of the accumulation of genetic and clinical factors on poor survival prognosis and overall treatment response.
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Affiliation(s)
- Jolanta Pamuła-Piłat
- Department of Genetic and Molecular Diagnostics of Cancer, Center for Translational Research and Molecular Biology of Cancer, Maria Sklodowska-Curie National Research Institute of Oncology, Gliwice, Poland.,Center for Translational Research and Molecular Biology of Cancer, Maria Sklodowska-Curie National Research Institute of Oncology, Gliwice, Poland
| | - Karolina Tęcza
- Department of Genetic and Molecular Diagnostics of Cancer, Center for Translational Research and Molecular Biology of Cancer, Maria Sklodowska-Curie National Research Institute of Oncology, Gliwice, Poland.,Center for Translational Research and Molecular Biology of Cancer, Maria Sklodowska-Curie National Research Institute of Oncology, Gliwice, Poland
| | - Magdalena Kalinowska-Herok
- Department of Genetic and Molecular Diagnostics of Cancer, Center for Translational Research and Molecular Biology of Cancer, Maria Sklodowska-Curie National Research Institute of Oncology, Gliwice, Poland.,Center for Translational Research and Molecular Biology of Cancer, Maria Sklodowska-Curie National Research Institute of Oncology, Gliwice, Poland
| | - Ewa Grzybowska
- Center for Translational Research and Molecular Biology of Cancer, Maria Sklodowska-Curie National Research Institute of Oncology, Gliwice, Poland.
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3
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Ding S, Chen R, Chen G, Li M, Wang J, Zou J, Du F, Dong J, Cui X, Huang X, Deng Y, Tang Z. One-step colorimetric genotyping of single nucleotide polymorphism using probe-enhanced loop-mediated isothermal amplification (PE-LAMP). Am J Cancer Res 2019; 9:3723-3731. [PMID: 31281509 PMCID: PMC6587344 DOI: 10.7150/thno.33980] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Accepted: 04/10/2019] [Indexed: 12/12/2022] Open
Abstract
Single nucleotide polymorphism (SNP) is the most abundant molecular marker associated with many physiologic and pathologic phenotypes. An isothermal, accurate and cost-effective SNP detection could make a great difference in point-of-care testing (POCT) or on-site diagnosis. However, there are two challenges, the expensive instrument and labor-intensive process, faced by the development of on-site SNP detection. We reported a novel SNP typing method based on the probe-enhanced loop-mediated isothermal amplification (PE-LAMP), which combines the oligonucleotide probe with a conventional LAMP to realize the SNP discrimination by analyzing the great discrepancy in amplification efficiency. Methods: We firstly constructed the genotyping method by combining the hybridization of the specific probe with the powerful amplification of LAMP. Then we validated the method by genotyping the SNP rs3741219 and we sought to realize one-step visualized typing. Finally, we applied the method to pharmacogenomic testing by genotyping CYP2C19*2 and MDR1 C3435T. Results: The PE-LAMP was successfully constructed to detect SNP and the sensitivity of our method is as low as 1000 copies of target DNA, which is sufficient to routine diagnosis. The high specificity in detecting mutant in the presence of excess wild-type allele could be achieved. It has shown good performance in helping predict the individual response of antiplatelet drug Clopidogrel through typing simply treated saliva samples. Conclusions: The proposed method is one-step, colorimetric, specific and sensitive enough to detect crudely treated samples, showing great potential in the pharmacogenomic study and POCT use.
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A probe directed recombinase amplification assay for detection of MTHFR A1298C polymorphism associated with congenital heart disease. Biotechniques 2019; 64:211-217. [PMID: 29793361 DOI: 10.2144/btn-2018-2010] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Single nucleotide polymorphisms (SNPs) play an important role in susceptibility to complex diseases, treatment efficacy and adverse drug responses. Conventional methods to detect SNPs are usually based on PCR or DNA sequencing, which are typically time-consuming and require sophisticated equipment. In this proof-of-concept study, a probe-directed recombinase amplification (PDRA) assay was developed to detect the A1298C polymorphism of 5,10-methylenetetrahydrofolate reductase (MTHFR). The PDRA assay included two real-time reactions to detect the A and C nucleotides of A1298C polymorphism. Each reaction contained only one primer and one probe and was finished at 39°C within 35 min. The results of genotyping of 150 clinical samples using PDRA were completely consistent with those by direct sequencing. Additionally, when the 1000 Genomes Project HCB frequencies were used as the control group, MTHFR A1298C was found to be associated with congenital heart disease. In conclusion, the proposed novel PDRA assay is a valuable tool for the detection of SNPs and demonstrates significant potential to be widely applicable in both research and clinical settings.
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Chen L, Qi H, Zhang L, Li H, Shao J, Chen H, Zhong M, Shi X, Ye T, Li Q. Effects of FGFR gene polymorphisms on response and toxicity of cyclophosphamide-epirubicin-docetaxel-based chemotherapy in breast cancer patients. BMC Cancer 2018; 18:1038. [PMID: 30359238 PMCID: PMC6202826 DOI: 10.1186/s12885-018-4951-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Accepted: 10/15/2018] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND The chemotherapy resistance and toxicity of chemotherapy are major problems in breast cancer treatment. However, candidate biomarkers for predicting clinical outcomes and better prognosis remain lacking. METHODS In this study, we analyzed possible impact of 8 genetic variants of fibroblast growth factor receptor1-4 (FGFR1-4) on the treatment response and toxicities in 211 breast cancer patients. DNA was extracted from peripheral blood cells, and the genotypes were examined using the TaqMan Pre-Designed SNP Genotyping Assays. RESULTS The FGFR4 rs1966265 and FGFR2 rs2981578 contributed to clinical outcome of breast cancer treated with docetaxel-epirubicin-cyclophosphamide (CET)-based chemotherapy. For rs1966265, AA genotype had significant correlation with the clinical response to neoadjuvant chemotherapy (NCT) when compared with GG and AG/GG genotype (P = 0.019 and P = 0.004, respectively). Moreover, A allele of FGFR2 rs2981578 had significant rates of response (P = 0.025). In addition, rs2420946 CC genotype was associated with higher frequency of toxicities compared with TT and CT/TT genotypes (P = 0.038 and P = 0.019, respectively). Also, rs2981578 AG genotype showed higher frequency of toxicities compared with GG genotype (P < 0.0001). CONCLUSIONS The results suggest these polymorphisms, especially rs1966265 and rs2981578, might be candidate pharmacogenomics factors to the response and prognosis prediction for individualized CET-based chemotherapy in breast cancer patients.
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Affiliation(s)
- Lu Chen
- Department of Pharmacy, Huashan Hospital, Fudan University, Shanghai, China
| | - Huijie Qi
- Department of Pharmacy, Huashan Hospital, Fudan University, Shanghai, China
| | - Liudi Zhang
- Department of Pharmacy, Huashan Hospital, Fudan University, Shanghai, China
| | - Haixia Li
- Department of Pathology, Huashan Hospital North, Fudan University, Shanghai, China
| | - Jie Shao
- Department of General Surgery, Huashan Hospital North, Fudan University, Shanghai, China
| | - Haifei Chen
- Department of Pharmacy, Huashan Hospital, Fudan University, Shanghai, China
| | - Mingkang Zhong
- Department of Pharmacy, Huashan Hospital, Fudan University, Shanghai, China
| | - Xiaojin Shi
- Department of Pharmacy, Huashan Hospital, Fudan University, Shanghai, China
| | - Ting Ye
- Nursing Department, Huashan Hospital, Fudan University, Shanghai, China.
| | - Qunyi Li
- Department of Pharmacy, Huashan Hospital, Fudan University, Shanghai, China.
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6
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Genetic polymorphisms and response to 5-fluorouracil, doxorubicin and cyclophosphamide chemotherapy in breast cancer patients. Oncotarget 2018; 7:66790-66808. [PMID: 27527855 PMCID: PMC5341838 DOI: 10.18632/oncotarget.11053] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Accepted: 07/18/2016] [Indexed: 11/25/2022] Open
Abstract
Clinical resistance to chemotherapy is one of the major problems in breast cancer treatment. In this study we analyzed possible impact of 22 polymorphic variants on the treatment response in 324 breast cancer patients. Selected genes were involved in FAC chemotherapy drugs transport (ABCB1, ABCC2, ABCG2, SLC22A16), metabolism (CYP1B1, CYP2C19, GSTT1, GSTM1, GSTP1, TYMS, MTHFR, DPYD), drug-induced damage repair (ERCC1, ERCC2, XRCC1) and involved in regulation of DNA damage response and cell cycle control (ATM, TP53). Apart from preexisting metastases three polymorphic variants were independent prognostic high risk factors of lack of response to FAC chemotherapy. Our results showed that the response to treatment depended of the variability in genes engaged in drugs’ transport (ABCC2 c.-24C>T, ABCB1 p.Ser893Ala/Thr) and in DNA repair machinery (ERCC2 p.Lys751Gln). Furthermore, the growing number of high-risk genotypes was reflected in gradual increase in risk of the non-responsiveness to treatment- from OR 2.68 for presence of two genotypes to OR 9.93 for carriers of all three negative genotypes in the group of all patients. Similar gene-dosage effect was observed in the subgroup of TNBCs. Also, TFFS significantly shortened with the increasing number of high-risk genotypes, with median of 54.4 months for carriers of one variant, to 51.5 and 34.9 months for the carriers of two and three genotypes, respectively. Our results demonstrate that results of cancer treatment are the effect of many clinical and genetic factors. It seems that multifactorial polymorphic models could be a potentially useful tool in personalization of cancer therapies. The novelty in our model is the over representation of triple negative breast cancer (TNBC) patients among the carriers of all unfavorable polymorphic variants. This finding contributes to the elucidation of the mechanisms of drug resistance in this subgroup of breast cancer patients.
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Nguyen TTT, Chua JKK, Seah KS, Koo SH, Yee JY, Yang EG, Lim KK, Pang SYW, Yuen A, Zhang L, Ang WH, Dymock B, Lee EJD, Chen ES. Predicting chemotherapeutic drug combinations through gene network profiling. Sci Rep 2016; 6:18658. [PMID: 26791325 PMCID: PMC4726371 DOI: 10.1038/srep18658] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Accepted: 11/23/2015] [Indexed: 12/29/2022] Open
Abstract
Contemporary chemotherapeutic treatments incorporate the use of several agents in combination. However, selecting the most appropriate drugs for such therapy is not necessarily an easy or straightforward task. Here, we describe a targeted approach that can facilitate the reliable selection of chemotherapeutic drug combinations through the interrogation of drug-resistance gene networks. Our method employed single-cell eukaryote fission yeast (Schizosaccharomyces pombe) as a model of proliferating cells to delineate a drug resistance gene network using a synthetic lethality workflow. Using the results of a previous unbiased screen, we assessed the genetic overlap of doxorubicin with six other drugs harboring varied mechanisms of action. Using this fission yeast model, drug-specific ontological sub-classifications were identified through the computation of relative hypersensitivities. We found that human gastric adenocarcinoma cells can be sensitized to doxorubicin by concomitant treatment with cisplatin, an intra-DNA strand crosslinking agent, and suberoylanilide hydroxamic acid, a histone deacetylase inhibitor. Our findings point to the utility of fission yeast as a model and the differential targeting of a conserved gene interaction network when screening for successful chemotherapeutic drug combinations for human cells.
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Affiliation(s)
- Thi Thuy Trang Nguyen
- Department of Biochemistry, National University of Singapore, Singapore.,National University Health System (NUHS), Singapore
| | - Jacqueline Kia Kee Chua
- Department of Biochemistry, National University of Singapore, Singapore.,Department of Chemistry, Faculty of Science, National University of Singapore, Singapore
| | - Kwi Shan Seah
- Department of Biochemistry, National University of Singapore, Singapore.,National University Health System (NUHS), Singapore
| | - Seok Hwee Koo
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.,Changi General Hospital, Ministry of Health, Singapore
| | - Jie Yin Yee
- National University Health System (NUHS), Singapore.,Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Eugene Guorong Yang
- Department of Pharmacy, Faculty of Science, National University of Singapore, Singapore
| | - Kim Kiat Lim
- Department of Biochemistry, National University of Singapore, Singapore.,National University Health System (NUHS), Singapore
| | | | - Audrey Yuen
- School of Chemical and Life Sciences, Singapore Polytechnic, Singapore
| | - Louxin Zhang
- Department of Mathematics, Faculty of Science, National University of Singapore, Singapore
| | - Wee Han Ang
- NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore, Singapore.,Department of Chemistry, Faculty of Science, National University of Singapore, Singapore
| | - Brian Dymock
- Department of Pharmacy, Faculty of Science, National University of Singapore, Singapore
| | - Edmund Jon Deoon Lee
- National University Health System (NUHS), Singapore.,Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Ee Sin Chen
- Department of Biochemistry, National University of Singapore, Singapore.,National University Health System (NUHS), Singapore.,NUS Synthetic Biology for Clinical and Technological Innovation (SynCTI), Life Sciences Institute, National University of Singapore.,NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore, Singapore
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8
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Charehbili A, de Groot S, van der Straaten T, Swen JJ, Pijl H, Gelderblom H, van de Velde CJH, Nortier JWR, Guchelaar HJ, Kroep JR. Exploratory analysis of candidate germline gene polymorphisms in breast cancer patients treated with neoadjuvant anthracycline-containing chemotherapy and associations with febrile neutropenia. Pharmacogenomics 2015; 16:1267-76. [PMID: 26289095 DOI: 10.2217/pgs.15.74] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
AIM SNPs may be associated with (side) effects of chemotherapy and may be useful as biomarkers to predict febrile neutropenia. PATIENTS & METHODS 187 DNA samples extracted from formalin-fixed paraffin-embedded tissue from patients with stage II/III HER2-negative breast cancer were genotyped. RESULTS Candidate SNPs were selected and explored for association with febrile neutropenia and/or pathological complete response. TT genotype of 388 C>T in FGFR4 (rs351855) had a tendency toward higher incidence of febrile neutropenia during neoadjuvant chemotherapy, compared with the CT (p = 0.383) genotype and compared with the CC genotype (p = 0.068). CONCLUSION The TT genotype of 388 C>T FGFR4 may be related to incidence of febrile neutropenia during neoadjuvant TAC (docetaxel, doxorubicin, cyclophosphamide) chemotherapy and is possibly useful as a patient-related risk factor when assessing febrile neutropenia risk. Original submitted 23 January 2015; Revision submitted 26 May 2015.
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Affiliation(s)
- A Charehbili
- Department of Medical Oncology, Leiden University Medical Center, PO Box 9600, Albinusdreef 2, 2300 RC Leiden, The Netherlands.,Department of Surgery, Leiden University Medical Center, Leiden, The Netherlands
| | - S de Groot
- Department of Medical Oncology, Leiden University Medical Center, PO Box 9600, Albinusdreef 2, 2300 RC Leiden, The Netherlands
| | - T van der Straaten
- Department of Clinical Pharmacy & Toxicology, Leiden University Medical Center, Leiden, The Netherlands
| | - J J Swen
- Department of Clinical Pharmacy & Toxicology, Leiden University Medical Center, Leiden, The Netherlands
| | - H Pijl
- Department of Endocrinology, Leiden University Medical Center, Leiden, The Netherlands
| | - H Gelderblom
- Department of Medical Oncology, Leiden University Medical Center, PO Box 9600, Albinusdreef 2, 2300 RC Leiden, The Netherlands
| | - C J H van de Velde
- Department of Surgery, Leiden University Medical Center, Leiden, The Netherlands
| | - J W R Nortier
- Department of Medical Oncology, Leiden University Medical Center, PO Box 9600, Albinusdreef 2, 2300 RC Leiden, The Netherlands
| | - H J Guchelaar
- Department of Clinical Pharmacy & Toxicology, Leiden University Medical Center, Leiden, The Netherlands
| | - J R Kroep
- Department of Medical Oncology, Leiden University Medical Center, PO Box 9600, Albinusdreef 2, 2300 RC Leiden, The Netherlands
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Sun Y, Lu Y, Li T, Xie L, Deng Y, Li S, Qin X. Interferon Gamma +874T/A Polymorphism Increases the Risk of Hepatitis Virus-Related Diseases: Evidence from a Meta-Analysis. PLoS One 2015; 10:e0121168. [PMID: 25939029 PMCID: PMC4418602 DOI: 10.1371/journal.pone.0121168] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Accepted: 01/28/2015] [Indexed: 02/06/2023] Open
Abstract
Background Interferon gamma (IFN-γ) is a key regulatory cytokine, which plays an important role in antiviral defense of an infected host. However, the association between the IFN-γ +874T/A gene polymorphism and hepatitis virus-related diseases is heterogeneous. Methods Based on the Preferred Reporting Items for Systematic Reviews and Meta-analyses statement, a comprehensive literature search of eligible studies in Embase, Pubmed, and the Cochrane Library was undertaken through November 2014. Odds ratios (ORs) and the corresponding 95% confidence intervals (CIs) were used to measure the strength of the models. Results Seventeen case-control articles, including 24 studies with 5503 individuals, met the inclusion criteria. The results indicated a statistically significant association between the IFN-γ +874T/A polymorphism and hepatitis virus—related diseases in a recessive gene model (AA vs. TT+TA: OR=1.350, 95% CI=1.101-1.657, P=0.004, I2%=54.3, and PQ=0.001 for heterogeneity), especially in Asians (OR=1.407, 95% CI=1.035-1.911, P=0.029, I2%=61.9, and PQ=0.005 for heterogeneity) and hepatitis B virus (HBV)–related disease (OR=1.486, 95% CI=1.195–1.849, P=0.000, I2%=40.4, and PQ=0.053 for heterogeneity). Conclusions The evidence suggests that the IFN-γ +874T/A polymorphism increases the risk of hepatitis virus—related diseases, especially in Asians and HBV—related diseases. Further studies on this topic in different ethnicities, especially genome-wide association studies, should be conducted to strengthen our results.
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Affiliation(s)
- Yifan Sun
- Department of Clinical Laboratory, First Affiliated Hospital of Guangxi Medical University, 6 Shuangyong Road, Nanning, 530021, Guangxi, People's Republic of China
| | - Yu Lu
- Department of Clinical Laboratory, First Affiliated Hospital of Guangxi Medical University, 6 Shuangyong Road, Nanning, 530021, Guangxi, People's Republic of China
| | - Taijie Li
- Department of Clinical Laboratory, First Affiliated Hospital of Guangxi Medical University, 6 Shuangyong Road, Nanning, 530021, Guangxi, People's Republic of China
| | - Li Xie
- Department of Clinical Laboratory, First Affiliated Hospital of Guangxi Medical University, 6 Shuangyong Road, Nanning, 530021, Guangxi, People's Republic of China
| | - Yan Deng
- Department of Clinical Laboratory, First Affiliated Hospital of Guangxi Medical University, 6 Shuangyong Road, Nanning, 530021, Guangxi, People's Republic of China
| | - Shan Li
- Department of Clinical Laboratory, First Affiliated Hospital of Guangxi Medical University, 6 Shuangyong Road, Nanning, 530021, Guangxi, People's Republic of China
| | - Xue Qin
- Department of Clinical Laboratory, First Affiliated Hospital of Guangxi Medical University, 6 Shuangyong Road, Nanning, 530021, Guangxi, People's Republic of China
- * E-mail:
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10
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Sun Y, Lu Y, Pen Q, Li T, Xie L, Deng Y, Qin A. Interferon gamma +874 T/A polymorphism increases the risk of cervical cancer: evidence from a meta-analysis. Tumour Biol 2015; 36:4555-64. [PMID: 25649976 DOI: 10.1007/s13277-015-3100-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Accepted: 04/01/2014] [Indexed: 02/02/2023] Open
Abstract
Data from previous studies about the association between interferon gamma (IFN-γ) +874 T/A (rs2430561) polymorphism and cervical cancer risk offer controversial results. To obtain a more dependable conclusion, this meta-analysis was performed. We selected eight articles including nine case-control studies with 1,116 cases and 1,290 controls, odds ratios (OR) with 95 % confidence intervals (CI) were used to assess the strength of the association. Subgroup analysis was carried out by ethnicity, source of controls, genotyping methods, and score of quality assessment. Our meta-analysis indicated that the IFN-γ (+874 T/A) polymorphism significantly increased the risk of cervical cancer in the codominant model (TA vs. TT: OR = 1.471, 95 % CI = 1.137-1.903, P = 0.003, I (2) % = 0.0, P Q = 0.785) and the dominant model (TA + AA vs. TT: OR = 1.399, 95 % CI = 1.097-1.784, P = 0.007, I (2) % = 0.0, P Q = 0.486) in the overall population. Stratified analysis by ethnicity indicated a significantly increased risk of cervical cancer in Asians in the codominant model (TA vs. TT: OR = 1.494, 95 % CI = 1.069-2.087, P = 0.019, I (2) % = 0.0, P Q = 0.440) and the dominant model (OR = 1.455, 95 % CI = 1.062-1.993, P = 0.019, I (2) % = 42.9, P Q = 0.154). Thus, the IFN-γ (+874 T/A) polymorphism is likely to increase the risk of cervical cancer. Because of the limited studies and sample sizes included in our meta-analysis, further well-designed and large-scale studies are demanded to confirm our results.
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Affiliation(s)
- Yifan Sun
- Department of Clinical Laboratory, First Affiliated Hospital of Guangxi Medical University, 6 Shuangyong Road, Nanning, 530021, Guangxi, People's Republic of China
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Xu Y, Deng Q, He B, Pan Y, Li R, Gao T, Sun H, Song G, Wang S, Cho WC. The diplotype Fas −1377A/−670G as a genetic marker to predict a lower risk of breast cancer in Chinese women. Tumour Biol 2014; 35:9147-61. [PMID: 24916571 DOI: 10.1007/s13277-014-2175-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Accepted: 06/02/2014] [Indexed: 12/22/2022] Open
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12
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Yang Z, Sweedler JV. Application of capillary electrophoresis for the early diagnosis of cancer. Anal Bioanal Chem 2014; 406:4013-31. [DOI: 10.1007/s00216-014-7722-y] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2013] [Revised: 02/18/2014] [Accepted: 02/21/2014] [Indexed: 02/07/2023]
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13
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Ghavami S, Shojaei S, Yeganeh B, Ande SR, Jangamreddy JR, Mehrpour M, Christoffersson J, Chaabane W, Moghadam AR, Kashani HH, Hashemi M, Owji AA, Łos MJ. Autophagy and apoptosis dysfunction in neurodegenerative disorders. Prog Neurobiol 2013; 112:24-49. [PMID: 24211851 DOI: 10.1016/j.pneurobio.2013.10.004] [Citation(s) in RCA: 714] [Impact Index Per Article: 64.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2012] [Revised: 10/08/2013] [Accepted: 10/15/2013] [Indexed: 12/12/2022]
Abstract
Autophagy and apoptosis are basic physiologic processes contributing to the maintenance of cellular homeostasis. Autophagy encompasses pathways that target long-lived cytosolic proteins and damaged organelles. It involves a sequential set of events including double membrane formation, elongation, vesicle maturation and finally delivery of the targeted materials to the lysosome. Apoptotic cell death is best described through its morphology. It is characterized by cell rounding, membrane blebbing, cytoskeletal collapse, cytoplasmic condensation, and fragmentation, nuclear pyknosis, chromatin condensation/fragmentation, and formation of membrane-enveloped apoptotic bodies, that are rapidly phagocytosed by macrophages or neighboring cells. Neurodegenerative disorders are becoming increasingly prevalent, especially in the Western societies, with larger percentage of members living to an older age. They have to be seen not only as a health problem, but since they are care-intensive, they also carry a significant economic burden. Deregulation of autophagy plays a pivotal role in the etiology and/or progress of many of these diseases. Herein, we briefly review the latest findings that indicate the involvement of autophagy in neurodegenerative diseases. We provide a brief introduction to autophagy and apoptosis pathways focusing on the role of mitochondria and lysosomes. We then briefly highlight pathophysiology of common neurodegenerative disorders like Alzheimer's diseases, Parkinson's disease, Huntington's disease and Amyotrophic lateral sclerosis. Then, we describe functions of autophagy and apoptosis in brain homeostasis, especially in the context of the aforementioned disorders. Finally, we discuss different ways that autophagy and apoptosis modulation may be employed for therapeutic intervention during the maintenance of neurodegenerative disorders.
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Affiliation(s)
- Saeid Ghavami
- Department of Human Anatomy and Cell Science, University of Manitoba, Winnipeg, Canada; Manitoba Institute of Child Health, Department of Physiology, University of Manitoba, Winnipeg, Canada; St. Boniface Research Centre, University of Manitoba, Winnipeg, Canada
| | - Shahla Shojaei
- Department of Biochemistry, Recombinant Protein Laboratory, Medical School, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Behzad Yeganeh
- Manitoba Institute of Child Health, Department of Physiology, University of Manitoba, Winnipeg, Canada; Hospital for Sick Children Research Institute, Department of Physiology and Experimental Medicine, University of Toronto, Canada
| | - Sudharsana R Ande
- Department of Internal Medicine, University of Manitoba, Winnipeg, Canada
| | - Jaganmohan R Jangamreddy
- Department of Clinical and Experimental Medicine (IKE), Integrative Regenerative Medicine Center (IGEN), Division of Cell Biology, Linkoping University, Linkoping, Sweden
| | - Maryam Mehrpour
- INSERM U845, Research Center "Growth & Signaling" Paris Descartes University Medical School, France
| | - Jonas Christoffersson
- Department of Clinical and Experimental Medicine (IKE), Integrative Regenerative Medicine Center (IGEN), Division of Cell Biology, Linkoping University, Linkoping, Sweden
| | - Wiem Chaabane
- Department of Clinical and Experimental Medicine (IKE), Integrative Regenerative Medicine Center (IGEN), Division of Cell Biology, Linkoping University, Linkoping, Sweden; Department of Biology, Faculty of Sciences, Tunis University, Tunis, Tunisia
| | | | - Hessam H Kashani
- Department of Human Anatomy and Cell Science, University of Manitoba, Winnipeg, Canada; Manitoba Institute of Child Health, Department of Physiology, University of Manitoba, Winnipeg, Canada
| | - Mohammad Hashemi
- Department of Clinical Biochemistry, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran; Cellular and Molecular Biology Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Ali A Owji
- Department of Biochemistry, Recombinant Protein Laboratory, Medical School, Shiraz University of Medical Sciences, Shiraz, Iran.
| | - Marek J Łos
- Department of Clinical and Experimental Medicine (IKE), Integrative Regenerative Medicine Center (IGEN), Division of Cell Biology, Linkoping University, Linkoping, Sweden.
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Brooks JD, Teraoka SN, Bernstein L, Mellemkjær L, Malone KE, Lynch CF, Haile RW, Concannon P, Reiner AS, Duggan DJ, Schiermeyer K, Bernstein JL, Figueiredo JC. Common variants in genes coding for chemotherapy metabolizing enzymes, transporters, and targets: a case-control study of contralateral breast cancer risk in the WECARE Study. Cancer Causes Control 2013; 24:1605-14. [PMID: 23775025 PMCID: PMC3709075 DOI: 10.1007/s10552-013-0237-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2012] [Accepted: 05/21/2013] [Indexed: 11/27/2022]
Abstract
Purpose Women who receive chemotherapy for a first primary breast cancer have been observed to have a reduced risk of contralateral breast cancer (CBC), however, whether the genetic profile of a patient modifies this protective effect is currently not understood. The purpose of this study is to investigate the impact of germline genetic variation in genes coding for drug metabolizing enzymes, transporters, and targets on the association between chemotherapy and risk of CBC. Methods From the population-based Women’s Environment Cancer and Radiation Epidemiology (WECARE) Study, we included 636 Caucasian women with CBC (cases) and 1,224 women with unilateral breast cancer (controls). The association between common chemotherapeutic regimens, CMF and FAC/FEC, and risk of CBC stratified by genotype of 180 single nucleotide polymorphisms in 14 genes selected for their known involvement in metabolism, action, and transport of breast cancer chemotherapeutic agents, were determined using conditional logistic regression. Results CMF (RR = 0.5, 95 % CI 0.4, 0.7) and FAC/FEC (RR = 0.7, 95 % CI 0.4, 1.0) are associated with lower CBC risk relative to no chemotherapy in multivariable-adjusted models. Here we show that genotype of selected genes involved in the metabolism and uptake of these therapeutic agents does not significantly alter the protective effect of either CMF or FAC/FEC on risk of CBC. Conclusion The results of this study show that germline genetic variation in selected gene does not significantly alter the protective effect of CMF, FAC, and FEC on risk of CBC. Electronic supplementary material The online version of this article (doi:10.1007/s10552-013-0237-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Jennifer D Brooks
- Department of Epidemiology and Biostatistics, Memorial Sloan-Kettering Cancer Center, 307 E 63rd Street, 3rd Floor, New York, NY, USA.
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15
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Zhang C, Liu Y, Ring BZ, Nie K, Yang M, Wang M, Shen H, Wu X, Ma X. A novel multiplex tetra-primer ARMS-PCR for the simultaneous genotyping of six single nucleotide polymorphisms associated with female cancers. PLoS One 2013; 8:e62126. [PMID: 23614025 PMCID: PMC3629144 DOI: 10.1371/journal.pone.0062126] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2012] [Accepted: 03/19/2013] [Indexed: 11/18/2022] Open
Abstract
Background The tetra-primer amplification refractory mutation system PCR (T-ARMS-PCR) is a fast and economical means of assaying SNP's, requiring only PCR amplification and subsequent electrophoresis for the determination of genotypes. To improve the throughput and efficiency of T-ARMS-PCR, we combined T-ARMS-PCR with a chimeric primer-based temperature switch PCR (TSP) strategy, and used capillary electrophoresis (CE) for amplicon separation and identification. We assessed this process in the simultaneous genotyping of four breast cancer–and two cervical cancer risk–related SNPs. Methods A total of 24 T-ARMS-PCR primers, each 5′-tagged with a universal sequence and a pair of universal primers, were pooled together to amplify the 12 target alleles of 6 SNPs in 186 control female blood samples. Direct sequencing of all samples was also performed to assess the accuracy of this method. Results Of the 186 samples, as many as 11 amplicons can be produced in one single PCR and separated by CE. Genotyping results of the multiplex T-ARMS-PCR were in complete agreement with direct sequencing of all samples. Conclusions This novel multiplex T-ARMS-PCR method is the first reported method allowing one to genotype six SNPs in a single reaction with no post-PCR treatment other than electrophoresis. This method is reliable, fast, and easy to perform.
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Affiliation(s)
- Chen Zhang
- Key Laboratory for Medical Virology, Ministry of Health-National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Ying Liu
- Key Laboratory for Medical Virology, Ministry of Health-National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
- Department of Food Science and Engineering, College of Science and Engineering, Jinan University, Guangzhou, China
| | - Brian Z. Ring
- Institute of Genomic and Personalized Medicine, School of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Kai Nie
- Key Laboratory for Medical Virology, Ministry of Health-National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Mengjie Yang
- Key Laboratory for Medical Virology, Ministry of Health-National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Miao Wang
- Key Laboratory for Medical Virology, Ministry of Health-National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Hongwei Shen
- Key Laboratory for Medical Virology, Ministry of Health-National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Xiyang Wu
- Department of Food Science and Engineering, College of Science and Engineering, Jinan University, Guangzhou, China
- * E-mail: (XM); (XW)
| | - Xuejun Ma
- Key Laboratory for Medical Virology, Ministry of Health-National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
- * E-mail: (XM); (XW)
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16
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Hashemi M, Fazaeli A, Ghavami S, Eskandari-Nasab E, Arbabi F, Mashhadi MA, Taheri M, Chaabane W, Jain MV, Łos MJ. Functional polymorphisms of FAS and FASL gene and risk of breast cancer - pilot study of 134 cases. PLoS One 2013; 8:e53075. [PMID: 23326385 PMCID: PMC3543397 DOI: 10.1371/journal.pone.0053075] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2012] [Accepted: 11/23/2012] [Indexed: 01/06/2023] Open
Abstract
Fas/Fas ligand (FasL) system is one of the key apoptotic signaling entities in the extrinsic apoptotic pathway. De-regulation of this pathway, i.e. by mutations may prevent the immune system from the removal of newly-formed tumor cells, and thus lead to tumor formation. The present study investigated the association between −1377 G/A (rs2234767) and −670 A/G (rs1800682) polymorphisms in Fas as well as single nucleotide polymorphisms INV2nt −124 A/G (rs5030772) and −844 C/T (rs763110) in FasL in a sample of Iranian patients with breast cancer. This case-control study was done on 134 breast cancer patients and 152 normal women. Genomic DNA was extracted from whole blood samples. The polymorphisms were determined by using tetra-ARMS-PCR method. There was no significant difference in the genotype distribution of FAS rs2234767 polymorphism between cases and controls. FAS rs1800682, FASL rs5030772, and FASL rs763110 genotypes showed significant associations with an increasing risk of breast cancer (odds ratio OR = 3.18, P = 0.019; OR = 5.08, P = 0.012; OR = 2.40, P = 0.024, respectively). In conclusion, FAS rs2234767 was not associated with breast cancer risk. Though, FAS rs1800682, FASL rs5030772, and FASL rs763110 polymorphisms were associated with the risk of breast cancer in the examined population.
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Affiliation(s)
- Mohammad Hashemi
- Cellular and Molecular Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
- Department of Clinical Biochemistry, School of Medicine, Zahedan University of Medical Science, Zahedan, Iran
| | - Aliakbar Fazaeli
- Department of Clinical Biochemistry, School of Medicine, Zahedan University of Medical Science, Zahedan, Iran
| | - Saeid Ghavami
- Biology of Breathing Group, Manitoba Institute of Child Health, Winnipeg, Manitoba, Canada
- Department of Physiology, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Ebrahim Eskandari-Nasab
- Department of Clinical Biochemistry, School of Medicine, Zahedan University of Medical Science, Zahedan, Iran
- Department of Internal Medicine, School of Medicine, Zahedan University of Medical Science, Zahedan, Iran
| | - Farshid Arbabi
- Department of Internal Medicine, School of Medicine, Zahedan University of Medical Science, Zahedan, Iran
| | - Mohammad Ali Mashhadi
- Department of Internal Medicine, School of Medicine, Zahedan University of Medical Science, Zahedan, Iran
| | - Mohsen Taheri
- Genetic of Non Communicable Disease Research Center, Zahedan University of Medical Science, Zahedan, Iran
| | - Wiem Chaabane
- Department of Clinical and Experimental Medicine, Integrative Regenerative Med. Center (IGEN), Division of Cell Biology, Linköping University, Linköping, Sweden
- Department of Biology, Faculty of Sciences, University of Tunis, Tunis, Tunisia
| | - Mayur V. Jain
- Department of Clinical and Experimental Medicine, Integrative Regenerative Med. Center (IGEN), Division of Cell Biology, Linköping University, Linköping, Sweden
| | - Marek J. Łos
- Department of Clinical and Experimental Medicine, Integrative Regenerative Med. Center (IGEN), Division of Cell Biology, Linköping University, Linköping, Sweden
- BioApplications Enterprises, Winnipeg, Manitoba, Canada
- * E-mail:
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Chaabane W, User SD, El-Gazzah M, Jaksik R, Sajjadi E, Rzeszowska-Wolny J, Los MJ. Autophagy, apoptosis, mitoptosis and necrosis: interdependence between those pathways and effects on cancer. Arch Immunol Ther Exp (Warsz) 2012; 61:43-58. [PMID: 23229678 DOI: 10.1007/s00005-012-0205-y] [Citation(s) in RCA: 199] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2012] [Accepted: 09/06/2012] [Indexed: 12/21/2022]
Abstract
Cell death is a fundamental ingredient of life. Thus, not surprisingly more than one form of cell death exists. Several excellent reviews on various forms of cell death have already been published but manuscripts describing interconnection and interdependence between such processes are uncommon. Here, what follows is a brief introduction on all three classical forms of cell death, followed by a more detailed insight into the role of p53, the master regulator of apoptosis, and other forms of cell death. While discussing p53 and also the role of caspases in cell death forms, we offer insight into the interplay between autophagy and apoptosis, or necrosis, where autophagy may initially serve pro-survival functions. The review moves further to present some details about less researched forms of programmed cell death, namely necroptosis, necrosis and mitoptosis. These "mixed" forms of cell death allow us to highlight the interconnected nature of cell death forms, particularly apoptosis and necrosis. The interdependence between apoptosis, autophagy and necrosis, and their significance for cancer development and treatment are also analyzed in further parts of the review. In the concluding parts, the afore-mentioned issues will be put in perspective for the development of novel anti-cancer therapies.
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Affiliation(s)
- Wiem Chaabane
- Division of Cell Biology, Department Clinical and Experimental Medicine (IKE), and Integrative Regenerative Medicine Center (IGEN), Linköping University, Cell Biology Building, Linköping, Sweden
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18
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Wu JR, Zeng R. Molecular basis for population variation: from SNPs to SAPs. FEBS Lett 2012; 586:2841-5. [PMID: 22828278 DOI: 10.1016/j.febslet.2012.07.036] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2012] [Revised: 07/14/2012] [Accepted: 07/16/2012] [Indexed: 01/09/2023]
Abstract
Single nucleotide polymorphisms (SNPs) are one type of genomic DNA variations in a population. Correspondingly, single amino-acid polymorphisms (SAPs) derived from non-synonymous SNPs represent protein variations in a population. Recently, using proteomic approaches, SAPs in the plasma proteomes of an Asian population were systematically identified for the first time. That study showed that heterozygous and homozygous proteins with various SAPs have different associations with particular traits in the population. Recent discoveries of widespread differences between RNA and DNA sequences indicate that RNA editing is also a source of SAPs--one that is independent of genomic SNPs. Furthermore, we argue that there are de novo SAPs that are not encoded by either DNA or RNA sequences.
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Affiliation(s)
- Jia-Rui Wu
- Key Laboratory of Systems Biology, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China.
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19
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Saadat M, Khalili M, Nasiri M, Rajaei M, Omidvari S, Saadat I. Clinical response to chemotherapy in locally advanced breast cancer was not associated with several polymorphisms in detoxification enzymes and DNA repair genes. Biochem Biophys Res Commun 2012; 419:117-9. [PMID: 22330804 DOI: 10.1016/j.bbrc.2012.01.143] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2012] [Accepted: 01/28/2012] [Indexed: 01/18/2023]
Abstract
The main aim of the present study was to investigate the association between several genetic polymorphisms (in glutathione S-transferase members and DNA repair genes) and clinical response to chemotherapy in locally advanced breast cancer. A sequential series of 101 patients were prospectively included in this study. Clinical assessment of treatment was accomplished by comparing initial tumor size with preoperative tumor size using revised RECIST guideline (version 1.1). Clinical response was regarded as a response or no response. There was no difference between non-responders and responders for the prevalence of genotypes of the study polymorphisms.
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Affiliation(s)
- Mostafa Saadat
- Department of Biology, College of Sciences, Shiraz University, Shiraz 71454, Iran.
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20
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Kim SY, Yoo JY, Shin AS, Kim YJ, Lee ES, Lee YS. Prostate Stem Cell Antigen Single Nucleotide Polymorphisms Influence Risk of Estrogen Receptor Negative Breast Cancer in Korean Females. Asian Pac J Cancer Prev 2012; 13:41-8. [DOI: 10.7314/apjcp.2012.13.1.041] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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21
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Individually tailored treatment with epirubicin and paclitaxel with or without capecitabine as first-line chemotherapy in metastatic breast cancer: a randomized multicenter trial. Breast Cancer Res Treat 2011; 131:939-47. [PMID: 22094937 DOI: 10.1007/s10549-011-1880-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2011] [Accepted: 11/07/2011] [Indexed: 10/15/2022]
Abstract
Anthracyclines and taxanes are active cytotoxic drugs in the treatment of early metastatic breast cancer. It is yet unclear whether addition of capecitabine to the combination of these drugs improves the treatment outcome. Patients with advanced breast cancer were randomized to first-line chemotherapy with a combination of epirubicin (Farmorubicin(®)) and paclitaxel (Taxol(®)) alone (ET) or in combination with capecitabine (Xeloda(®), TEX). Starting doses for ET were epirubicin 75 mg/m(2) plus paclitaxel 175 mg/m(2), and for TEX epirubicin 75 mg/m(2), paclitaxel 155 mg/m(2), and capecitabine 825 mg/m(2) BID for 14 days. Subsequently, doses were tailored related to side effects. Primary endpoint was progression-free survival (PFS); secondary endpoints were overall survival (OS), time to treatment failure (TTF), objective response (OR), safety and quality of life (QoL). 287 patients were randomized, 143 to ET and 144 to TEX. Median PFS was 10.8 months for patients treated with ET, and 12.4 months for those treated with TEX (HR 0.84, 95% CI 0.65-1.07, P = 0.16); median OS was 26.0 months for women in the ET versus 29.7 months in the TEX arm (HR 0.84, 95% CI 0.63-1.11, P = 0.22). OR was achieved in 44.8% (ET) and 54.2% (TEX), respectively (χ(2) 3.66, P = 0.16). TTF was significantly longer for patients treated with TEX, 6.0 months, versus 5.2 months following ET (HR 0.73, 95% CI 0.58-0.93, P = 0.009). Severe hematological side effects related to epirubicin and paclitaxel were evenly distributed between the treatment arms, mucositis, diarrhea, and Hand-Foot syndrome were significantly more frequent in the TEX arm. Toxicity-adjusted treatment with ET and TEX showed similar efficacy in terms of PFS, OS, and OR. In this trial with limited power, the addition of capecitabine to epirubicin and paclitaxel as first-line treatment did not translate into clinically relevant improvement of the outcome.
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22
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Wiechec E. Implications of genomic instability in the diagnosis and treatment of breast cancer. Expert Rev Mol Diagn 2011; 11:445-53. [PMID: 21545260 DOI: 10.1586/erm.11.21] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Tumorigenesis is a multistep process resulting from DNA mutations observed at the DNA sequence and chromosome level as well as epigenetic changes, which affect expression of oncogenes and tumor suppressor genes. Breast cancer is a very heterogeneous disease that manifests in various histological and clinical types. Defects in the biological action of the genome driven by various alterations, such as point mutations and chromosomal rearrangements, lead to the collapse of genome integrity, uncontrolled cell proliferation and failure in apoptotic cell death. Detailed profiling of breast cancer-associated genomic alterations is indispensable for the design of individualized anticancer therapy, by suggesting diagnostic and prognostic criteria as well as the outcome of applied treatment. Among various directions of cancer research, identification of genomic alterations in breast cancer and their translation into clinical applications is at the forefront.
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Affiliation(s)
- Emilia Wiechec
- Otto-von-Guericke University, Institute of Molecular and Clinical Immunology, Leipziger Str. 44, 39120 Magdeburg, Germany.
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Wiechec E, Wiuf C, Overgaard J, Hansen LL. High-Resolution Melting Analysis for Mutation Screening of RGSL1, RGS16, and RGS8 in Breast Cancer. Cancer Epidemiol Biomarkers Prev 2010; 20:397-407. [DOI: 10.1158/1055-9965.epi-10-0514] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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25
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Bénit P, El-Khoury R, Schiff M, Sainsard-Chanet A, Rustin P. Genetic background influences mitochondrial function: modeling mitochondrial disease for therapeutic development. Trends Mol Med 2010; 16:210-7. [PMID: 20382561 DOI: 10.1016/j.molmed.2010.03.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2009] [Revised: 03/11/2010] [Accepted: 03/15/2010] [Indexed: 12/21/2022]
Abstract
Genetic background strongly influences the phenotype of human mitochondrial diseases. Mitochondrial biogenesis and function require up to 1500 nuclear genes, providing myriad opportunities for effects on disease expression. Phenotypic variability, combined with relative rarity, constitutes a major obstacle to establish cohorts for clinical trials. Animal models are, therefore, potentially valuable. However, several of these show no or very mild disease phenotypes compared with patients and can not be used for therapeutic studies. One reason might be the insufficient attention paid to the need for genetic diversity in order to capture the effects of genetic background on disease expression. Here, we use data from various models to emphasize the need to preserve genetic diversity when studying mitochondrial disease phenotypes or drug effects.
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Maggi N, Arrigo P, Ruggiero C. SNP analysis of Rac1 For personalized ligand interaction. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2010; 2010:1779-1782. [PMID: 21096420 DOI: 10.1109/iembs.2010.5626750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
This paper addresses mutational events that give rise to differing response to drugs focusing on Rac1, a protein that has been recognized as a target for drug design for cardiovascular disease due its regulatory role of angiogenesis. Rac1 has been considered with reference to Single Nucleotide Polymorphism (SNP), which has become of great value for personalized medicine. We have considered four variation of Rac1 registered in UNIPROTKB. Two of these variations are due to the environmental or population factors and two are mutation that we have selected because they are located near the binding sites of Rac1. Rac1 has been modelled by Rosetta software and by i-Tasser web server. We have chosen i-Tasser based modelling because the Rac1 structure obtained was more closely resembling crystallography data. In silico model have been used as receptors for docking with a set of 20 morpholines. The results that have been obtained on SNPs shows that a single ligand can react very differently with a mutated structure. Our analysis shows that all mutations that have been considered change Rac1 conformation and increase the accessible surface of Rac1. Our analysis highlights the effect of two sources of genetic variability: single base variation and alternative splicing.
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Affiliation(s)
- Norbert Maggi
- Department of Communication, Computer and System Sciences, Nanobiotechnology and Medical Informatics Laboratory University of Genoa, Via all'Opera Pia, 13, 16145, Italy
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27
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Los M. New, exciting developments in experimental therapies in the early 21st century. Eur J Pharmacol 2009; 625:1-5. [DOI: 10.1016/j.ejphar.2009.10.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2009] [Revised: 10/08/2009] [Accepted: 10/08/2009] [Indexed: 12/15/2022]
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