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https://www.readbyqxmd.com/read/29350329/detection-of-human-papillomavirus-dna-in-tumors-from-rwandese-breast-cancer-patients
#1
REVIEW
Thierry Habyarimana, Mohammed Attaleb, Jean Baptiste Mazarati, Youssef Bakri, Mohammed El Mzibri
BACKGROUND: During the last decades, a great interest was given to viral etiology of breast cancer. Indeed, due to recent technical improvements and some encouraging new results, it has been a resurgence of interest in the possibility that a substantial proportion of human breast cancers may be caused by viral infections. High-risk genotypes of human papillomavirus (HPV) have been found in breast cancer cases. In the present study, we aimed to assess the presence of HPV DNA in breast cancer cases from Rwanda and to evaluate the association between HPV infection and clinico-pathological features...
January 19, 2018: Breast Cancer: the Journal of the Japanese Breast Cancer Society
https://www.readbyqxmd.com/read/29348905/bridging-the-divide-preclinical-research-discrepancies-between-triple-negative-breast-cancer-cell-lines-and-patient-tumors
#2
REVIEW
Andrew Sulaiman, Lisheng Wang
Triple-negative breast cancer (TNBC) is the most refractory subtype of breast cancer and disproportionately accounts for the majority of breast cancer related deaths. Effective treatment of this disease remains an unmet medical need. Over the past several decades, TNBC cell lines have been used as the foundation for drug development and disease modeling. However, ever-mounting research demonstrates striking differences between cell lines and clinical TNBC tumors, disconnecting bench research and actual clinical responses...
December 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/29344885/microrna-networks-in-breast-cancer-cells
#3
Andliena Tahiri, Miriam R Aure, Vessela N Kristensen
A variety of molecular techniques can be used in order to unravel the molecular composition of cells. In particular, the microarray technology has been used to identify novel biomarkers that may be useful in the diagnosis, prognosis, or treatment of cancer. The microarray technology is ideal for biomarker discovery as it allows for the screening of a large number of molecules at once. In this review, we focus on microRNAs (miRNAs) which are key molecules in cells and regulate gene expression post-transcriptionally...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29344857/adaptation-of-laser-microdissection-technique-to-nanostring-rna-analysis-in-the-study-of-a-spontaneous-metastatic-mammary-carcinoma-mouse-model
#4
Nadia P Castro, Yelena G Golubeva
The mouse model characterized by spontaneous lung metastasis from JygMC (A) cells closely resembles the human triple negative breast cancer (TNBC) subtype. The primary tumors morphologically present both epithelial and spindle-like cells, but metastases in lung parenchyma display only adenocarcinoma properties. In the study of molecular signatures, laser capture microdissection (LCM) on frozen tissue sections was used to separate the following regions of interest: the epithelial-mesenchymal transition (EMT), mesenchymal-epithelial transition (MET), carcinoma, lung metastases, normal mammary gland and normal lung parenchyma...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29344265/high-expression-of-pu-1-is-associated-with-her-2-and-shorter-survival-in-patients-with-breast-cancer
#5
Jing Lin, Wei Liu, Tian Luan, Lili Yuan, Wei Jiang, Huilong Cai, Weiguang Yuan, Yuwen Wang, Qingyuan Zhang, Lihong Wang
The transcription factor PU.1 was previously identified as an oncogene or a tumor suppressor in different types of leukemia. The aim of the present study was to investigate the expression of PU.1 in breast cancer and to analyze its association with clinical features and prognosis. Immunohistochemistry was used to determine PU.1 expression in breast cancer tissue microarrays and paraffin-embedded sections. The association between PU.1 expression and clinicopathological factors was assessed by using chi-square test...
December 2017: Oncology Letters
https://www.readbyqxmd.com/read/29344162/effects-of-rat-bone-marrow-derived-mesenchymal-stem-cells-on-breast-cancer-cells-with-differing-hormone-receptor-status
#6
Ying Wang, Shan Shao, Minna Luo, Shangke Huang, Lu Feng, Na Yuan, Fang Wu, Chengxue Dang, Xinhan Zhao
Breast cancer is a heterogeneous disease that can be classified into several molecular intrinsic subtypes according to hormone markers, including estrogen receptor, progesterone receptor and human epidermal growth factor receptor-2. Breast cancer cases with different hormone status vary with respect to patient morbidity, metastasis organotropism and disease progression. It is well known that the most preferential relapse site of breast cancer is in the bone, but the metastatic incidence is markedly higher in hormone receptor-positive cancer compared with that in hormone receptor-negative cancers...
December 2017: Oncology Letters
https://www.readbyqxmd.com/read/29341157/minimizing-inequality-in-access-to-precision-medicine-in-breast-cancer-by-real-time-population-based-molecular-analysis-in-the-scan-b-initiative
#7
L Rydén, N Loman, C Larsson, C Hegardt, J Vallon-Christersson, M Malmberg, H Lindman, A Ehinger, L H Saal, Å Borg
BACKGROUND: Selection of systemic therapy for primary breast cancer is currently based on clinical biomarkers along with stage. Novel genomic tests are continuously being introduced as more precise tools for guidance of therapy, although they are often developed for specific patient subgroups. The Sweden Cancerome Analysis Network - Breast (SCAN-B) initiative aims to include all patients with breast cancer for tumour genomic analysis, and to deliver molecular subtype and mutational data back to the treating physician...
January 2018: British Journal of Surgery
https://www.readbyqxmd.com/read/29340027/dual-sirt1-expression-patterns-strongly-suggests-its-bivalent-role-in-human-breast-cancer
#8
Khaldoun Rifaï, Gaëlle Judes, Mouhamed Idrissou, Marine Daures, Yves-Jean Bignon, Frédérique Penault-Llorca, Dominique Bernard-Gallon
Breast cancer is the most common cancer in women, and the leading cause of cancer death in women worldwide. SIRT1 (silent mating type information regulation 2 homolog) 1 is a class-III histone deacetylase involved in apoptosis regulation, DNA repair and tumorigenesis. However, its role in breast carcinoma remains controversial, as both tumor-suppressive and tumor-promoting functions have been reported. Also, there are very few reports available where expression of SIRT1 is comprehensively analyzed in breast tumors classified by molecular subtype...
December 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29337111/early-re-staging-and-molecular-subtype-shift-surveillance-of-locally-recurrent-or-metastatic-breast-cancer-a-new-pet-ct-integrated-precise-algorithm
#9
Wei Guo, Bing Hao, Nana Luo, Dan Ruan, Xiuyu Guo, Hao-Jun Chen, Hua Wu, Long Sun
Recurrent breast cancer poses considerable diagnostic and therapeutic challenges for clinic. Clinical suspicion of recurrence must be first confirmed by imaging studies. Then re-biopsy of suspected recurrence and metastasis in patients with breast cancer is recommended in the practice guidelines of the National Comprehensive Cancer Network (NCCN) and European Society for Medical Oncology (ESMO) to confirm whether the molecular subtype changes. It may change the individual treatment plan directly. Our research provided an integrated algorithm for locally recurrent or distant metastatic breast cancer, including early relapse detection and subsequently a new practical PET/CT imaging guide biopsy approach for surveilling molecular subtype shifts of the recurrent breast cancer...
January 11, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29336662/body-mass-index-in-her2-negative-metastatic-breast-cancer-treated-with-first-line-paclitaxel-and-bevacizumab
#10
Laura Pizzuti, Domenico Sergi, Isabella Sperduti, Luigi Di Lauro, Marco Mazzotta, Claudio Botti, Fiorentino Izzo, Luca Marchetti, Silverio Tomao, Paolo Marchetti, Clara Natoli, Antonino Grassadonia, Teresa Gamucci, Lucia Mentuccia, Emanuela Magnolfi, Angela Vaccaro, Alessandra Cassano, Ernesto Rossi, Andrea Botticelli, Valentina Sini, Maria G Sarobba, Maria Agnese Fabbri, Luca Moscetti, Antonio Astone, Andrea Michelotti, Claudia De Angelis, Ilaria Bertolini, Francesco Angelini, Gennaro Ciliberto, Marcello Maugeri-Saccà, Antonio Giordano, Maddalena Barba, Patrizia Vici
The evidence emerged from the TOURANDOT trial encourages evaluating the role of anthropometric determinants on treatment outcomes in HER2-negative metastatic breast cancer patients treated with bevacizumab-including regimens. We thus analyzed data from a subgroup of these patients from a larger cohort previously assessed for treatment outcomes. Patients were included in the present analysis if body mass index values had been recorded at baseline. Clinical benefit rates, progression free survival and overall survival were assessed for the overall study population and subgroups defined upon molecular subtype...
January 16, 2018: Cancer Biology & Therapy
https://www.readbyqxmd.com/read/29333926/engrailed-1-overexpression-as-a-potential-prognostic-marker-in-quintuple-negative-breast-cancer
#11
Yu Jin Kim, Minjung Sung, Ensel Oh, Michael Van Vrancken, Ji-Young Song, Kyungsoo Jung, Yoon-La Choi
Triple-negative breast cancer (TNBC) is an aggressive breast cancer subtype characterized by poor patient prognosis and for which no targeted therapies are currently available. TNBC can be further categorized as either basal-like (BLBC) or quintuple-negative breast cancer (QNBC). In the present study, we aimed to identify novel molecular therapeutic targets for TNBC by analyzing the mRNA expression of TNBC-related genes in publicly available microarray data sets. We found that Engrailed 1 (EN1) was significantly overexpressed in TNBC...
January 15, 2018: Cancer Biology & Therapy
https://www.readbyqxmd.com/read/29333901/her2-positive-bilateral-metachronous-primary-breast-carcinoma-a-case-report
#12
Jinghao Yao, Jing Liu, Yawei Li, Yumei Li, Qiong Wu, Yan Yang
Human epidermal growth factor receptor 2 (HER2) positive is a unique molecular subtype of breast cancer (BC) characterized by high malignancy and poor prognosis. Bilateral primary breast cancer (BPBC) harboring HER2 gene amplification is available to be detected among the BC survivors due to the increasing use of anti-HER2 adjuvant therapy. However, owing to the paucity of cases reported, knowledge of treating HER2-positive BPBC patients including the clinical behavior, histopathologic characteristics, anti-HER2 therapeutic response and disease outcome are not fully understood...
January 15, 2018: Cancer Biology & Therapy
https://www.readbyqxmd.com/read/29333087/antioxydation-and-cell-migration-genes-are-identified-as-potential-therapeutic-targets-in-basal-like-and-brca1-mutated-breast-cancer-cell-lines
#13
Maud Privat, Justine Rudewicz, Nicolas Sonnier, Christelle Tamisier, Flora Ponelle-Chachuat, Yves-Jean Bignon
Basal-like breast cancers are among the most aggressive cancers and effective targeted therapies are still missing. In order to identify new therapeutic targets, we performed Methyl-Seq and RNA-Seq of 10 breast cancer cell lines with different phenotypes. We confirmed that breast cancer subtypes cluster the RNA-Seq data but not the Methyl-Seq data. Basal-like tumor hypermethylated phenotype was not confirmed in our study but RNA-Seq analysis allowed to identify 77 genes significantly overexpressed in basal-like breast cancer cell lines...
2018: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29330719/prognostic-value-of-tumor-infiltrating-lymphocyte-density-assessed-using-a-standardized-method-based-on-molecular-subtypes-and-adjuvant-chemotherapy-in-invasive-breast-cancer
#14
Nuri Jang, Hee Jung Kwon, Min Hui Park, Su Hwan Kang, Young Kyung Bae
BACKGROUND: This study investigated the prognostic value of tumor-infiltrating lymphocyte (TIL) density as determined by molecular subtype and receipt of adjuvant chemotherapy in invasive breast cancer (IBC). METHODS: Stromal TIL densities were evaluated in 1489 IBC samples using recommendations proposed by the International TILs Working Group. Cases were allocated to high- and low-TIL density groups using a cutoff of 10%. RESULTS: Of the 1489 IBC patients, 427 (28...
January 12, 2018: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/29330624/functional-transcriptomic-annotation-and-protein-protein-interaction-network-analysis-identify-nek2-birc5-and-top2a-as-potential-targets-in-obese-patients-with-luminal-a-breast-cancer
#15
Miriam Nuncia-Cantarero, Sandra Martinez-Canales, Fernando Andrés-Pretel, Gabriel Santpere, Alberto Ocaña, Eva Maria Galan-Moya
PURPOSE: Although obesity is a risk factor for breast cancer, little effort has been made in the identification of druggable molecular alterations in obese-breast cancer patients. Tumors are controlled by their surrounding microenvironment, in which the adipose tissue is a main component. In this work, we intended to describe molecular alterations at a transcriptomic and protein-protein interaction (PPI) level between obese and non-obese patients. METHODS AND RESULTS: Gene expression data of 269 primary breast tumors were compared between normal-weight (BMI < 25, n = 130) and obese (IMC > 30, n = 139) patients...
January 12, 2018: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/29329585/involvement-of-hedgehog-pathway-in-early-onset-aggressive-molecular-subtypes-and-metastatic-potential-of-breast-cancer
#16
Syeda Kiran Riaz, Jahangir Sarwar Khan, Syed Tahir Abbas Shah, Fen Wang, Lin Ye, Wen G Jiang, Muhammad Faraz Arshad Malik
BACKGROUND: Dysregulation of hedgehog pathway is observed in numerous cancers. Relevance of hedgehog pathway genes in cancer cohort and inhibition of its downstream effector (GLI1) towards metastasis in cell lines are explored in the study. METHOD: One hundred fifty fresh tumours of breast cancer patients were collected for the study. Based on differential expression, panel of 6 key regulators of the pathway (SHH, DHH, IHH, PTCH1, SMO and GLI1) in microarray datasets were identified...
January 8, 2018: Cell Communication and Signaling: CCS
https://www.readbyqxmd.com/read/29324312/the-hypoxia-responsive-long-non-coding-rnas-may-impact-on-the-tumor-biology-and-subsequent-management-of-breast-cancer
#17
REVIEW
Andrea Kapinova, Peter Kubatka, Pavol Zubor, Olga Golubnitschaja, Zuzana Dankova, Sona Uramova, Ivana Pilchova, Martin Caprnda, Radka Opatrilova, Jan Richnavsky, Peter Kruzliak, Jan Danko
Long non-coding RNAs (lncRNAs) are DNA transcripts longer than 200 nucleotides without protein-coding potential. As they are key regulators of gene expression at chromatic, transcriptional and posttranscriptional level, they play important role in various biological and pathological processes. Dysregulation of lncRNAs has been observed in several diseases including cancer. Breast cancer is heterogeneous disease with many molecular subtypes specific in different prognosis and treatment responses. Hypoxia, a common micro-environmental feature of rapidly growing tumour is associated with metastases, recurrences and resistance to therapy...
January 8, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29322783/micrornas-in-triple-negative-breast-cancer
#18
M Koleckova, M Janikova, Z Kolar
Triple-negative breast cancer (TNBC) is a molecular subtype of breast cancer with one of the worst prognoses. Current treatment is based on chemo- and/or radiotherapy and surgery. New targets, however, offering other therapeutic approaches, have been identified. These involve poly (ADP-ribose) polymerase (PARP), vascular endothelial growth factor receptor (VEGFR), epidermal growth factor receptor (EGFR), androgen receptor (AR), long non-coding RNAs (lncRNAs) and microRNAs (miRs). The latter are non-coding RNAs which control the expression of more than 50% of human genes via regulation of basic cellular processes at post-transcriptional level and dysregulation of miRs is found in many types of tumors...
2018: Neoplasma
https://www.readbyqxmd.com/read/29320969/differential-expression-of-tgf%C3%AE-isoforms-in-breast-cancer-highlights-different-roles-during-breast-cancer-progression
#19
Mahmood Y Hachim, Ibrahim Y Hachim, Meiou Dai, Suhad Ali, Jean-Jacques Lebrun
While TGFβ plays a critical role in tumor formation and progression, the role and contribution of its three different isoforms remain unclear. In this study, we aimed at elucidating the prognostic value of the TGFβ isoforms and assessed their expression levels in breast cancer patients at different stages of the disease. We found higher levels of TGFβ1 and TGFβ3 in cancer patients compared to normal tissues, with no significant changes in TGFβ2 expression. Similarly, TGFβ1 and TGFβ3, but not TGFβ2, showed higher expression levels in advanced lymph node-positive and metastatic tumors, suggesting different roles for the different isoforms in tumor progression and the metastatic process, while in the least aggressive molecular subtype (luminal A), expression of the three TGFβ isoforms significantly correlated with expression of both TGFβ receptors, such correlation only occurred between TGFβ1 and TGFβ3 and the TGFβ type II receptor (TβRII) in the highly aggressive basal-like subtype...
January 2018: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/29320752/the-value-of-detection-of-s100a8-and-asah1-in-predicting-the-chemotherapy-response-for-breast-cancer-patients
#20
Yu-Hong Li, Hai-Ting Liu, Jing Xu, Ai-Yan Xing, Jie Zhang, Ya-Wen Wang, Gang Yin, Peng Gao
Chemotherapy plays an important role in the treatment of breast cancer. However, chemoresistance remains the main obstacle for effective treatment, leading to poor prognosis. This study aims to investigate the value of detection of S100A8 and ASAH1 in predicting the chemotherapy response. Miller and Payne grades were used to assess the chemotherapy response in breast cancers. The expression of S100A8 and ASAH1, as well as ER, PR, HER-2 and Ki-67 were assessed by immunohistochemical staining in 120 cases of non-special type invasive ductal carcinoma (IDC-NOS)...
January 7, 2018: Human Pathology
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