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Cao L, Ren C, Zhang G, Li X, Chen B, Li K, Li C, Mok H, Wang Y, Wen L, Jia M, Wei G, Lin J, Liao N. Characteristics of MYC Amplification and Their Association with Clinicopathological and Molecular Factors in Patients with Breast Cancer. DNA Cell Biol 2022; 41:521-538. [PMID: 35475703 DOI: 10.1089/dna.2020.6487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
MYC amplification is detected in ∼15% of breast tumors and is associated with poor prognosis by mediating acquired resistance to anticancer therapies. This study aimed to determine the prevalence of MYC amplifications in Chinese women with breast cancer (BRCA) and investigate the correlation between MYC amplification and clinicopathological and molecular characteristics and its clinical implications. We analyzed MYC alterations in tissue specimens from 410 women diagnosed with BRCA in our hospital from June 1, 2017 to September 27, 2018. We compared our results with publicly available data from The Cancer Genome Atlas (TCGA) BRCA cohort (n = 1079). MYC amplification was identified in 12.4% (51/410) of our cohort, with mean copy number (CN) of 4.42 (range: 2.84-11.27). In TCGA cohort, MYC amplification was identified in 21.2% (229/1079) and was associated with age, estrogen receptor status, progesterone receptor status, human epidermal growth factor receptor 2 (HER2) status, and molecular subtype, whereas in our cohort, MYC amplification was associated with smaller tumor size (T1-2, p = 0.023) and higher Ki-67 levels (≥20%; p = 0.031). Analysis of molecular profiles revealed that MYC-amplified breast tumors had significantly more concurrent CN variations compared with MYC nonamplified BRCA in both Guangdong Provincial People's Hospital (GDPH) and TCGA cohorts (p < 0.001). Pathway mapping analysis demonstrated that MYC-amplified tumors had more mutations involved in 15 different but interrelated pathways critical in DNA repair, cell cycle, and cell proliferation. Patients in TCGA cohort with MYC-amplified hormone receptor (HR)-positive/HER2-positive BRCA (p = 0.038) and MYC nonamplified triple-negative BRCA (p = 0.027) had significantly shorter overall survival. In conclusion, this study contributes to a better understanding that MYC-amplified breast tumors had distinct clinicopathological and molecular features compared with MYC nonamplified breast tumors. Further research with a larger sample size is necessary to further elucidate the clinical and survival implications of MYC amplifications.
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Affiliation(s)
- Li Cao
- Department of Breast Cancer, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Chongyang Ren
- Department of Breast Cancer, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Guochun Zhang
- Department of Breast Cancer, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Xuerui Li
- Department of Breast Cancer, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Bo Chen
- Department of Breast Cancer, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Kai Li
- Department of Breast Cancer, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Cheukfai Li
- Department of Breast Cancer, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Hsiaopei Mok
- Department of Breast Cancer, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Yulei Wang
- Department of Breast Cancer, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Lingzhu Wen
- Department of Breast Cancer, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Minghan Jia
- Department of Breast Cancer, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Guangnan Wei
- Department of Breast Cancer, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China.,School of Medicine, South China University of Technology, Guangzhou, China
| | - Jiali Lin
- Department of Breast Cancer, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China.,The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China
| | - Ning Liao
- Department of Breast Cancer, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China.,School of Medicine, South China University of Technology, Guangzhou, China.,The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China
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Tsoi H, You CP, Leung MH, Man EPS, Khoo US. Targeting Ribosome Biogenesis to Combat Tamoxifen Resistance in ER+ve Breast Cancer. Cancers (Basel) 2022; 14:1251. [PMID: 35267559 PMCID: PMC8909264 DOI: 10.3390/cancers14051251] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 02/24/2022] [Accepted: 02/27/2022] [Indexed: 02/07/2023] Open
Abstract
Breast cancer is a heterogeneous disease. Around 70% of breast cancers are estrogen receptor-positive (ER+ve), with tamoxifen being most commonly used as an adjuvant treatment to prevent recurrence and metastasis. However, half of the patients will eventually develop tamoxifen resistance. The overexpression of c-MYC can drive the development of ER+ve breast cancer and confer tamoxifen resistance through multiple pathways. One key mechanism is to enhance ribosome biogenesis, synthesising mature ribosomes. The over-production of ribosomes sustains the demand for proteins necessary to maintain a high cell proliferation rate and combat apoptosis induced by therapeutic agents. c-MYC overexpression can induce the expression of eIF4E that favours the translation of structured mRNA to produce oncogenic factors that promote cell proliferation and confer tamoxifen resistance. Either non-phosphorylated or phosphorylated eIF4E can mediate such an effect. Since ribosomes play an essential role in c-MYC-mediated cancer development, suppressing ribosome biogenesis may help reduce aggressiveness and reverse tamoxifen resistance in breast cancer. CX-5461, CX-3543 and haemanthamine have been shown to repress ribosome biogenesis. Using these chemicals might help reverse tamoxifen resistance in ER+ve breast cancer, provided that c-MYC-mediated ribosome biogenesis is the crucial factor for tamoxifen resistance. To employ these ribosome biogenesis inhibitors to combat tamoxifen resistance in the future, identification of predictive markers will be necessary.
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Affiliation(s)
| | | | | | | | - Ui-Soon Khoo
- Department of Pathology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China; (H.T.); (C.-P.Y.); (M.-H.L.); (E.P.S.M.)
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Lin PH, Wang MY, Lo C, Tsai LW, Yen TC, Huang TY, Huang WC, Yang K, Chen CK, Fan SC, Kuo SH, Huang CS. Circulating Tumor DNA as a Predictive Marker of Recurrence for Patients With Stage II-III Breast Cancer Treated With Neoadjuvant Therapy. Front Oncol 2021; 11:736769. [PMID: 34868925 PMCID: PMC8632818 DOI: 10.3389/fonc.2021.736769] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 10/25/2021] [Indexed: 12/22/2022] Open
Abstract
Background Patients with stage II to III breast cancer have a high recurrence rate. The early detection of recurrent breast cancer remains a major unmet need. Circulating tumor DNA (ctDNA) has been proven to be a marker of disease progression in metastatic breast cancer. We aimed to evaluate the prognostic value of ctDNA in the setting of neoadjuvant therapy (NAT). Methods Plasma was sampled at the initial diagnosis (defined as before NAT) and after breast surgery and neoadjuvant therapy(defined as after NAT). We extracted ctDNA from the plasma and performed deep sequencing of a target gene panel. ctDNA positivity was marked by the detection of alterations, such as mutations and copy number variations. Results A total of 95 patients were enrolled in this study; 60 patients exhibited ctDNA positivity before NAT, and 31 patients exhibited ctDNA positivity after NAT. A pathologic complete response (pCR) was observed in 13 patients, including one ER(+)Her2(-) patient, six Her2(+) patients and six triple-negative breast cancer (TNBC) patients. Among the entire cohort, multivariate analysis showed that N3 classification and ctDNA positivity after NAT were independent risk factors that predicted recurrence (N3, hazard ratio (HR) 3.34, 95% confidence interval (CI) 1.26 – 8.87, p = 0.016; ctDNA, HR 4.29, 95% CI 2.06 – 8.92, p < 0.0001). The presence of ctDNA before NAT did not affect the rate of recurrence-free survival. For patients with Her2(+) or TNBC, patients who did not achieve pCR were associated with a trend of higher recurrence (p = 0.105). Advanced nodal status and ctDNA positivity after NAT were significant risk factors for recurrence (N2 – 3, HR 3.753, 95% CI 1.146 – 12.297, p = 0.029; ctDNA, HR 3.123, 95% CI 1.139 – 8.564, p = 0.027). Two patients who achieved pCR had ctDNA positivity after NAT; one TNBC patient had hepatic metastases six months after surgery, and one Her2(+) breast cancer patient had brain metastasis 13 months after surgery. Conclusions This study suggested that the presence of ctDNA after NAT is a robust marker for predicting relapse in stage II to III breast cancer patients.
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Affiliation(s)
- Po-Han Lin
- Department of Medical Genetics, National Taiwan University Hospital, Taipei, Taiwan.,Institute of Medical Genomics and Proteomics, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Ming-Yang Wang
- Department of Surgery, National Taiwan University Hospital, Taipei, Taiwan
| | - Chiao Lo
- Department of Surgery, National Taiwan University Hospital, Taipei, Taiwan
| | - Li-Wei Tsai
- Department of Surgery, National Taiwan University Hospital, Taipei, Taiwan
| | - Tzu-Chun Yen
- Department of Medical Genetics, National Taiwan University Hospital, Taipei, Taiwan
| | - Thomas Yoyan Huang
- Department of Medical Genetics, National Taiwan University Hospital, Taipei, Taiwan
| | - Wei-Chih Huang
- Department of Medical Genetics, National Taiwan University Hospital, Taipei, Taiwan
| | - Karen Yang
- Department of Molecular Biology, Princeton University, Princeton, NJ, United States
| | - Chih-Kai Chen
- Department of Medical Genetics, National Taiwan University Hospital, Taipei, Taiwan
| | - Sheng-Chih Fan
- Department of Medical Genetics, National Taiwan University Hospital, Taipei, Taiwan
| | - Sung-Hsin Kuo
- Department of Medical Oncology, National Taiwan University Hospital, Taipei, Taiwan
| | - Chiun-Sheng Huang
- Department of Surgery, National Taiwan University Hospital, Taipei, Taiwan.,Department of Surgery, College of Medicine, National Taiwan University, Taipei, Taiwan
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Diori Karidio I, Sanlier SH. Reviewing cancer's biology: an eclectic approach. J Egypt Natl Canc Inst 2021; 33:32. [PMID: 34719756 DOI: 10.1186/s43046-021-00088-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Accepted: 09/11/2021] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Cancer refers to a group of some of the worldwide most diagnosed and deadliest pathophysiological conditions that conquered researchers' attention for decades and yet begs for more questions for a full comprehension of its complex cellular and molecular pathology. MAIN BODY The disease conditions are commonly characterized by unrestricted cell proliferation and dysfunctional replicative senescence pathways. In fact, the cell cycle operates under the rigorous control of complex signaling pathways involving cyclins and cyclin-dependent kinases assumed to be specific to each phase of the cycle. At each of these checkpoints, the cell is checked essentially for its DNA integrity. Genetic defects observed in these molecules (i.e., cyclins, cyclin-dependent kinases) are common features of cancer cells. Nevertheless, each cancer is different concerning its molecular and cellular etiology. These could range from the genetic defects mechanisms and/or the environmental conditions favoring epigenetically harbored homeostasis driving tumorigenesis alongside with the intratumoral heterogeneity with respect to the model that the tumor follows. CONCLUSIONS This review is not meant to be an exhaustive interpretation of carcinogenesis but to summarize some basic features of the molecular etiology of cancer and the intratumoral heterogeneity models that eventually bolster anticancer drug resistance for a more efficient design of drug targeting the pitfalls of the models.
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Affiliation(s)
- Ibrahim Diori Karidio
- Department of Biochemistry, Faculty of Science, E Block, Ege University, Erzene Mahallesi, Bornova, 35040, Izmir, Turkey.
| | - Senay Hamarat Sanlier
- Department of Biochemistry, Faculty of Science, E Block, Ege University, Erzene Mahallesi, Bornova, 35040, Izmir, Turkey.,ARGEFAR, Faculty of Medicine, Ege University, Bornova, 35040, Izmir, Turkey
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Frankhauser DE, Jovanovic‐Talisman T, Lai L, Yee LD, Wang LV, Mahabal A, Geradts J, Rockne RC, Tomsic J, Jones V, Sistrunk C, Miranda‐Carboni G, Dietze EC, Erhunmwunsee L, Hyslop T, Seewaldt VL. Spatiotemporal strategies to identify aggressive biology in precancerous breast biopsies. WIREs Mech Dis 2021; 13:e1506. [PMID: 33001587 PMCID: PMC8544796 DOI: 10.1002/wsbm.1506] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Revised: 08/21/2020] [Accepted: 08/24/2020] [Indexed: 01/12/2023]
Abstract
Over 90% of breast cancer is cured; yet there remain highly aggressive breast cancers that develop rapidly and are extremely difficult to treat, much less prevent. Breast cancers that rapidly develop between breast image screening are called "interval cancers." The efforts of our team focus on identifying multiscale integrated strategies to identify biologically aggressive precancerous breast lesions. Our goal is to identify spatiotemporal changes that occur prior to development of interval breast cancers. To accomplish this requires integration of new technology. Our team has the ability to perform single cell in situ transcriptional profiling, noncontrast biological imaging, mathematical analysis, and nanoscale evaluation of receptor organization and signaling. These technological innovations allow us to start to identify multidimensional spatial and temporal relationships that drive the transition from biologically aggressive precancer to biologically aggressive interval breast cancer. This article is categorized under: Cancer > Computational Models Cancer > Molecular and Cellular Physiology Cancer > Genetics/Genomics/Epigenetics.
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Affiliation(s)
- David E. Frankhauser
- Department of Population SciencesCity of Hope Comprehensive Cancer CenterDuarteCaliforniaUSA
| | | | - Lily Lai
- Department of Population SciencesCity of Hope Comprehensive Cancer CenterDuarteCaliforniaUSA
| | - Lisa D. Yee
- Department of Population SciencesCity of Hope Comprehensive Cancer CenterDuarteCaliforniaUSA
| | - Lihong V. Wang
- Department of Medical EngineeringCalifornia Institute of TechnologyPasadena, CaliforniaUSA
| | - Ashish Mahabal
- Center for Data Driven DiscoveryCalifornia Institute of TechnologyPasadena, CaliforniaUSA
| | - Joseph Geradts
- Department of PathologyDuke UniversityDurhamNorth CarolinaUSA
| | - Russell C. Rockne
- Department of Population SciencesCity of Hope Comprehensive Cancer CenterDuarteCaliforniaUSA
| | - Jerneja Tomsic
- Department of Population SciencesCity of Hope Comprehensive Cancer CenterDuarteCaliforniaUSA
| | - Veronica Jones
- Department of Population SciencesCity of Hope Comprehensive Cancer CenterDuarteCaliforniaUSA
| | - Christopher Sistrunk
- Department of Population SciencesCity of Hope Comprehensive Cancer CenterDuarteCaliforniaUSA
| | | | - Eric C. Dietze
- Department of Population SciencesCity of Hope Comprehensive Cancer CenterDuarteCaliforniaUSA
| | - Loretta Erhunmwunsee
- Department of Population SciencesCity of Hope Comprehensive Cancer CenterDuarteCaliforniaUSA
| | - Terry Hyslop
- Department of BiostatisticsDuke UniversityDurhamNorth CarolinaUSA
| | - Victoria L. Seewaldt
- Department of Population SciencesCity of Hope Comprehensive Cancer CenterDuarteCaliforniaUSA
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Zubareva EY, Sen’chukova MA. The modern views of the clinical, morphological and molecular biological predictors of breast cancer sensitivity to chemotherapy. ADVANCES IN MOLECULAR ONCOLOGY 2020. [DOI: 10.17650/2313-805x-2020-7-2-20-28] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
In the treatment of breast cancer, the neoadjuvant chemotherapy is vitally important and the evaluation of its effectiveness is crucial for determining the further therapy treatment, as well as the prognosis of the disease. This review provides current data of the physical, instrumental, morphological, molecular biology and genetics analysis used for the estimation of the neoadjuvant treatment effectiveness. Thus, review discusses the data concerning association of the disease peculiarities with the efficient therapeutic response to neoadjuvant chemotherapy including characteristics of patients (age, status of regional lymph nodes, presence of the lymphovascular invasion) and tumors (size, histological type, degree of differentiation, severity of the lymphoid tumor infiltration, molecular biological and genetic peculiarities). Particular attention is paid to such a promising predictive marker of the breast cancer response to chemotherapy as the level of tissue hypoxia. This section discusses the currently known mechanisms that might enable the effect of tissue hypoxia on the sensitivity of the tumor to drug treatment. The prospects for the use of a comprehensive analysis of predictive markers of the effectiveness of chemotherapeutic treatment are discussed.
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Affiliation(s)
- E. Yu. Zubareva
- Orenburg Regional Clinical Oncology Dispensary; Orenburg State Medical University, Ministry of Health of Russia
| | - M. A. Sen’chukova
- Orenburg Regional Clinical Oncology Dispensary; Orenburg State Medical University, Ministry of Health of Russia
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Yang X, Amgad M, Cooper LAD, Du Y, Fu H, Ivanov AA. High expression of MKK3 is associated with worse clinical outcomes in African American breast cancer patients. J Transl Med 2020; 18:334. [PMID: 32873298 PMCID: PMC7465409 DOI: 10.1186/s12967-020-02502-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 08/25/2020] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND African American women experience a twofold higher incidence of triple-negative breast cancer (TNBC) and are 40% more likely to die from breast cancer than women of other ethnicities. However, the molecular bases for the survival disparity in breast cancer remain unclear, and no race-specific therapeutic targets have been proposed. To address this knowledge gap, we performed a systematic analysis of the relationship between gene mRNA expression and clinical outcomes determined for The Cancer Genome Atlas (TCGA) breast cancer patient cohort. METHODS The systematic differential analysis of mRNA expression integrated with the analysis of clinical outcomes was performed for 1055 samples from the breast invasive carcinoma TCGA PanCancer cohorts. A deep learning fully-convolutional model was used to determine the association between gene expression and tumor features based on breast cancer patient histopathological images. RESULTS We found that more than 30% of all protein-coding genes are differentially expressed in White and African American breast cancer patients. We have determined a set of 32 genes whose overexpression in African American patients strongly correlates with decreased survival of African American but not White breast cancer patients. Among those genes, the overexpression of mitogen-activated protein kinase kinase 3 (MKK3) has one of the most dramatic and race-specific negative impacts on the survival of African American patients, specifically with triple-negative breast cancer. We found that MKK3 can promote the TNBC tumorigenesis in African American patients in part by activating of the epithelial-to-mesenchymal transition induced by master regulator MYC. CONCLUSIONS The poor clinical outcomes in African American women with breast cancer can be associated with the abnormal elevation of individual gene expression. Such genes, including those identified and prioritized in this study, could represent new targets for therapeutic intervention. A strong correlation between MKK3 overexpression, activation of its binding partner and major oncogene MYC, and worsened clinical outcomes suggests the MKK3-MYC protein-protein interaction as a new promising target to reduce racial disparity in breast cancer survival.
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Affiliation(s)
- Xuan Yang
- Department of Pharmacology and Chemical Biology, Emory University School of Medicine, Emory University, 1510 Clifton Road, Atlanta, GA, 30322, USA
- Emory Chemical Biology Discovery Center, Emory University School of Medicine, Emory University, Atlanta, GA, USA
| | - Mohamed Amgad
- Department of Biomedical Informatics, Emory University School of Medicine, Emory University, Atlanta, GA, USA
| | - Lee A D Cooper
- Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Yuhong Du
- Department of Pharmacology and Chemical Biology, Emory University School of Medicine, Emory University, 1510 Clifton Road, Atlanta, GA, 30322, USA
- Emory Chemical Biology Discovery Center, Emory University School of Medicine, Emory University, Atlanta, GA, USA
- Winship Cancer Institute, Emory University, Atlanta, GA, USA
| | - Haian Fu
- Department of Pharmacology and Chemical Biology, Emory University School of Medicine, Emory University, 1510 Clifton Road, Atlanta, GA, 30322, USA.
- Emory Chemical Biology Discovery Center, Emory University School of Medicine, Emory University, Atlanta, GA, USA.
- Winship Cancer Institute, Emory University, Atlanta, GA, USA.
- Department of Hematology & Medical Oncology, Emory University, Atlanta, GA, USA.
| | - Andrey A Ivanov
- Department of Pharmacology and Chemical Biology, Emory University School of Medicine, Emory University, 1510 Clifton Road, Atlanta, GA, 30322, USA.
- Emory Chemical Biology Discovery Center, Emory University School of Medicine, Emory University, Atlanta, GA, USA.
- Winship Cancer Institute, Emory University, Atlanta, GA, USA.
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Padayachee J, Daniels A, Balgobind A, Ariatti M, Singh M. HER-2/neu and MYC gene silencing in breast cancer: therapeutic potential and advancement in nonviral nanocarrier systems. Nanomedicine (Lond) 2020; 15:1437-1452. [PMID: 32515263 DOI: 10.2217/nnm-2019-0459] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Globally, breast cancer is the second leading cause of cancer-related mortality among women, with approximately 1.4 million new cases diagnosed annually. Associated genetic perturbations are emerging in the face of intense scientific enquiry, facilitating its classification, prognostication and treatment. RNAi, utilizing siRNA, is a powerful treatment strategy to silence disease-causing genes. However, therapeutic siRNA instability and poor cellular uptake have limited its clinical application, necessitating the use of nanocarriers. In this review, we highlight the RNAi mechanism, HER-2/neu and MYC as breast cancer gene targets, and nonviral nanocarriers as potentially safe and efficient delivery systems.
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Affiliation(s)
- Jananee Padayachee
- Nano-Gene & Drug Delivery Laboratory, Discipline of Biochemistry, School of Life Sciences, College of Agriculture, Engineering & Science, University of KwaZulu-Natal (Westville Campus), Private Bag X54001, Durban 4000, Kwa-Zulu Natal, South Africa
| | - Aliscia Daniels
- Nano-Gene & Drug Delivery Laboratory, Discipline of Biochemistry, School of Life Sciences, College of Agriculture, Engineering & Science, University of KwaZulu-Natal (Westville Campus), Private Bag X54001, Durban 4000, Kwa-Zulu Natal, South Africa
| | - Adhika Balgobind
- Nano-Gene & Drug Delivery Laboratory, Discipline of Biochemistry, School of Life Sciences, College of Agriculture, Engineering & Science, University of KwaZulu-Natal (Westville Campus), Private Bag X54001, Durban 4000, Kwa-Zulu Natal, South Africa
| | - Mario Ariatti
- Nano-Gene & Drug Delivery Laboratory, Discipline of Biochemistry, School of Life Sciences, College of Agriculture, Engineering & Science, University of KwaZulu-Natal (Westville Campus), Private Bag X54001, Durban 4000, Kwa-Zulu Natal, South Africa
| | - Moganavelli Singh
- Nano-Gene & Drug Delivery Laboratory, Discipline of Biochemistry, School of Life Sciences, College of Agriculture, Engineering & Science, University of KwaZulu-Natal (Westville Campus), Private Bag X54001, Durban 4000, Kwa-Zulu Natal, South Africa
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Oloomi M, Moazzezy N, Bouzari S. Comparing blood versus tissue-based biomarkers expression in breast cancer patients. Heliyon 2020; 6:e03728. [PMID: 32274439 PMCID: PMC7132155 DOI: 10.1016/j.heliyon.2020.e03728] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Revised: 01/14/2020] [Accepted: 03/30/2020] [Indexed: 12/18/2022] Open
Abstract
Molecular markers have been used as a tool for diagnostic approaches, staging, and evaluation of therapeutic responses in patients with cancer. Cancer molecular markers can also help clinicians to make decision on therapy and prognosis evaluation at the time of diagnosis. In the early diagnosis of breast cancer (BC), estrogen and progesterone receptors (ER/PR) expression levels should be determined through immunohistochemistry (IHC). In molecular genetics, there are some important tissue-based markers that can also be found in blood, such as Mammaglobin (MAM), Cytokeratin 19 (CK19), Mucin (MUC), Proto-oncogene (c-Myc), antigen Ki-67 (Ki67), and Carcinoembryonic antigen (CEA). In this study, the positive level of the marker genes in both blood and tissue of the BC patients were compared using reverse transcription polymerase chain reaction (RT-PCR) method. In addition, the importance of blood vs. tissue-based markers in BC diagnosis also demonstrated and is discussed. CEA (O), ERβ, CK19 and, c-Myc molecular markers were significantly different between blood of normal and patients while there was no significant difference of these markers in tissue samples. Blood-based biomarkers can be used for the early diagnosis of BC. Comparing blood versus tissue-based biomarkers indicated that there are correlations between markers in blood and tissue, since blood markers can be substitute to tissue markers in BC patients in the future.
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Affiliation(s)
- Mana Oloomi
- Molecular Biology Department, Pasteur Institute of Iran, Pasteur Ave., Tehran, 13164, Iran
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10
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Zhang J, Zhang Y, Li Z, Wu H, Xun J, Feng H. Bioinformatics analysis of Ewing's sarcoma: Seeking key candidate genes and pathways. Oncol Lett 2019; 18:6008-6016. [PMID: 31788075 PMCID: PMC6865160 DOI: 10.3892/ol.2019.10936] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Accepted: 08/13/2019] [Indexed: 12/22/2022] Open
Abstract
Ewing's sarcoma (ES) is the second most common bone tumor among children and adolescents worldwide. However, the genes and signaling pathways involved in ES tumorigenesis and progression remain unclear. The present study used two gene-expression profile datasets (GSE17674 and GSE31215) to elucidate key potential candidate genes and pathways in ES. Differentially expressed genes (DEGs) were identified and a functional enrichment analysis was performed. A protein-protein interaction (PPI) network was constructed, and the most significant module in the PPI network was selected from the Search Tool for the Retrieval of Interacting Genes/Proteins database. A total of 278 genes were identified by comparing the tumor samples with non-cancerous samples; these included 272 upregulated and 6 downregulated genes. The pathway analysis demonstrated significant enrichment in the positive regulation of transcription in the DEGs coding for RNA polymerase II promoter, plasma membrane and chromatin binding pathways in cancer in general. There were 269 nodes and 292 edges in the PPI network. Finally, MYC, IGF1, OAS1, EZH2 and ISG15 were identified as the hub genes according to the degree levels. The survival analysis revealed that EZH2 is associated with a poor prognosis in patients with ES. In conclusion, the DEGs, associated pathways and hub genes identified in the present study help elucidate the underlying molecular mechanisms of ES carcinogenesis and progression, and provide potential molecular targets and biomarkers for ES.
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Affiliation(s)
- Jinming Zhang
- Department of Orthopedics, Hebei Medical University Fourth Affiliated Hospital and Hebei Provincial Tumor Hospital, Shijiazhuang, Hebei 050011, P.R. China
| | - Yao Zhang
- Department of Breast Cancer Center, Hebei Medical University Fourth Affiliated Hospital and Hebei Provincial Tumor Hospital, Shijiazhuang, Hebei 050011, P.R. China
| | - Ze Li
- Department of Emergency, Hebei Medical University Second Affiliated Hospital, Shijiazhuang, Hebei 050000, P.R. China
| | - Hongzeng Wu
- Department of Orthopedics, Hebei Medical University Fourth Affiliated Hospital and Hebei Provincial Tumor Hospital, Shijiazhuang, Hebei 050011, P.R. China
| | - Jianjun Xun
- Department of Orthopedics, Hebei Medical University Fourth Affiliated Hospital and Hebei Provincial Tumor Hospital, Shijiazhuang, Hebei 050011, P.R. China
| | - Helin Feng
- Department of Orthopedics, Hebei Medical University Fourth Affiliated Hospital and Hebei Provincial Tumor Hospital, Shijiazhuang, Hebei 050011, P.R. China
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