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Heterogeneity breast metastasis

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https://www.readbyqxmd.com/read/28638726/downregulation-of-antigen-presentation-associated-pathway-proteins-is-linked-to-poor-outcome-in-triple-negative-breast-cancer-patient-tumors
#1
Martin H Pedersen, Brian L Hood, Hans Christian Beck, Thomas P Conrads, Henrik J Ditzel, Rikke Leth-Larsen
Triple-negative breast cancer (TNBC) is a heterogeneous subtype with varying disease outcomes. Tumor-infiltrating lymphocytes (TILs) are frequent in TNBC and have been shown to correlate with outcome, suggesting an immunogenic component in this subtype. However, other factors intrinsic to the cancer cells may also influence outcome. To identify proteins and molecular pathways associated with recurrence in TNBC, 34 formalin-fixed paraffin-embedded (FFPE) primary TNBC tumors were investigated by global proteomic profiling using mass spectrometry...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28633434/psip1-p75-promotes-tumorigenicity-in-breast-cancer-cells-by-promoting-the-transcription-of-cell-cycle-genes
#2
Deepak K Singh, Omid Gholamalamdari, Mahdieh Jadaliha, Xiao Ling Li, Yo-Chuen Lin, Yang Zhang, Shuomeng Guang, Seyedsasan Hashemikhabir, Saumya Tiwari, Yuelin J Zhu, Abid Khan, Anu Thomas, Arindam Chakraborty, Virgilia Macias, Andre K Balla, Rohit Bhargava, Sarath Chandra Janga, Jian Ma, Supriya G Prasanth, Ashish Lal, Kannanganattu V Prasanth
Breast cancer (BC) is a highly heterogeneous disease, both at the pathological and molecular level, and several chromatin-associated proteins play crucial roles in breast cancer initiation and progression. Here, we demonstrate the role of PSIP1 (PC4 and SF2 interacting protein)/p75 (LEDGF) in breast cancer progression. PSIP1/p75, previously identified as a chromatin-adaptor protein, is found to be upregulated in basal-like/triple negative breast cancer (TNBC) patient samples and cell lines. Immunohistochemistry in tissue arrays showed elevated levels of PSIP1 in metastatic invasive ductal carcinoma...
June 17, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/28611537/therapeutic-advances-and-new-directions-for-triple-negative-breast-cancer
#3
REVIEW
Eleni Andreopoulou, Catherine M Kelly, Hayley M McDaid
Triple-negative breast cancer (TNBC) is a molecularly diverse grouping with poor prognosis for which chemotherapy remains the foundation of treatment. The molecular heterogeneity of the disease rationalizes its diverse biological behavior and differential response to treatment. Estimates of up to 20% of patients diagnosed have germline mutations in DNA-damage repair-pathway genes, namely BRCA1 and 2, and this can be used to select patients likely to respond to platinums and/or inhibitors of poly(ADP-ribose) polymerase (PARP)...
March 2017: Breast Care
https://www.readbyqxmd.com/read/28611183/the-lncrna-h19-mediates-breast-cancer-cell-plasticity-during-emt-and-met-plasticity-by-differentially-sponging-mir-200b-c-and-let-7b
#4
Wu Zhou, Xiao-Lei Ye, Jun Xu, Ming-Guo Cao, Zheng-Yu Fang, Ling-Yun Li, Guang-Hui Guan, Qiong Liu, Yue-Hui Qian, Dong Xie
Metastasis is a multistep process by which tumor cells disseminate from their primary site and form secondary tumors at a distant site. The pathophysiological course of metastasis is mediated by the dynamic plasticity of cancer cells, which enables them to shift between epithelial and mesenchymal phenotypes through a transcriptionally regulated program termed epithelial-to-mesenchymal transition (EMT) and its reverse process, mesenchymal-to-epithelial transition (MET). Using a mouse model of spontaneous metastatic breast cancer, we investigated the molecular mediators of metastatic competence within a heterogeneous primary tumor and how these cells then manipulated their epithelial-mesenchymal plasticity during the metastatic process...
June 13, 2017: Science Signaling
https://www.readbyqxmd.com/read/28610410/prognostic-value-of-clinicopathological-factors-for-indonesian-breast-carcinomas-of-different-molecular-subtypes
#5
Irianiwati Widodo, Ery Kus Dwianingsih, Sumadi Lukman Anwar, Triningsih Fx Ediati, Totok Utoro, Teguh Aryandono, Soeripto
Background: Breast carcinoma (BC) is a heterogeneous disease due to its different molecular profiles i.e. luminal (luminal A and luminal B) and non-luminal (HER2 positive and triple negative) subtypes. Prognostic value of clinicopathological factors of Indonesian BC of different molecular subtypes has never been reported previously. This study aims to elaborate prognostic impacts on Indonesian BCs focusing on separate molecular subtypes. Methods: A hundred and fifty cases of invasive BC, stage I-IIIA, in Sardjito Hospital, Indonesia, were stained using anti ER, PR, HER2 and Ki-67 antibodies...
May 1, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28599313/clinicopathological-and-prognostic-significance-of-c-met-overexpression-in-breast-cancer
#6
Xixi Zhao, Jingkun Qu, Yuxin Hui, Hong Zhang, Yuchen Sun, Xu Liu, Xiaoyao Zhao, Zitong Zhao, Qian Yang, Feidi Wang, Shuqun Zhang
BACKGROUND: c-Met has been shown to promote organ development and cancer progression in many cancers. However, clinicopathological and prognostic value of c-Met in breast cancer remains elusive. METHODS: PubMed and EMBASE databases were searched for eligible studies. Correlation of c-Met overexpression with survival data and clinicopathological features was analyzed by using hazard ratio (HR) or odds ratio (OR) and fixed-effect or random-effect model according to heterogeneity...
May 24, 2017: Oncotarget
https://www.readbyqxmd.com/read/28588612/the-roles-of-carcinoembryonic-antigen-in-liver-metastasis-and-therapeutic-approaches
#7
REVIEW
Joo Han Lee, Seong-Wook Lee
Metastasis is a highly complicated and sequential process in which primary cancer spreads to secondary organic sites. Liver is a well-known metastatic organ from colorectal cancer. Carcinoembryonic antigen (CEA) is expressed in most gastrointestinal, breast, and lung cancer cells. Overexpression of CEA is closely associated with liver metastasis, which is the main cause of death from colorectal cancer. CEA is widely used as a diagnostic and prognostic tumor marker in cancer patients. It affects many steps of liver metastasis from colorectal cancer cells...
2017: Gastroenterology Research and Practice
https://www.readbyqxmd.com/read/28572257/translational-genomics-practical-applications-of-the-genomic-revolution-in-breast-cancer
#8
EDITORIAL
Lucy R Yates, Christine Desmedt
The genomic revolution has fundamentally changed our perception of breast cancer. It is now apparent from DNA-based massively parallel sequencing data that at the genomic level, every breast cancer is unique and shaped by the mutational processes to which it was exposed during its lifetime. More than 90 breast cancer driver genes have been identified as recurrently mutated, and many occur at low frequency across the breast cancer population. Certain cancer genes are associated with traditionally defined histologic subtypes, but genomic intertumoral heterogeneity exists even between cancers that appear the same under the microscope...
June 1, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28560673/molecular-profiling-and-significance-of-circulating-tumor-cell-based-genetic-signatures
#9
Nisha Kanwar, Susan J Done
Cancer kills by metastasizing beyond the primary site. Early detection, surgical intervention and other treatments have improved the survival rates of patients with cancer, however, once metastasis occurs, responses to conventional therapies become significantly less effective, and this remains the leading cause of death. Circulating tumor cells (CTCs) are tumor cells that have preferentially disseminated from the primary tumor mass into the hematological system, and are en route to favorable distant sites where if they survive, can develop into metastases...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28559413/targeting-the-molecular-subtypes-of-triple-negative-breast-cancer-understanding-the-diversity-to-progress-the-field
#10
Clinton Yam, Sendurai A Mani, Stacy L Moulder
Triple negative breast cancers (TNBCs) represent 10%-20% of primary breast cancers, and despite having greater initial sensitivity to cytotoxic chemotherapy, patients with TNBCs have higher rates of distant metastasis and a poorer prognosis compared with patients with hormone receptor positive and/or human epidermal growth factor receptor 2 positive disease. TNBC has historically been treated as a single disease entity in targeted therapy trials, but advances in gene expression profiling and other molecular diagnostic techniques over the last decade have revealed considerable biologic heterogeneity within TNBCs, including subgroups with distinct, targetable aberrations...
May 30, 2017: Oncologist
https://www.readbyqxmd.com/read/28551375/cytoskeletal-organization-in-microtentacles
#11
Alison N Killilea, Roseann Csencsits, Emily Le, Anand M Patel, Samuel J Kenny, Ke Xu, Kenneth H Downing
Microtentacles are thin, flexible cell protrusions that have recently been described and whose presence enhances efficient attachment of circulating cells. They are found on circulating tumor cells and can be induced on a wide range of breast cancer cell lines, where they are promoted by factors that either stabilize microtubules or destabilize the actin cytoskeleton. Evidence suggests that they are relevant to the metastatic spread of cancer, so understanding their structure and formation may lead to useful therapies...
May 24, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28500305/nsaids-use-and-reduced-metastasis-in-cancer-patients-results-from-a-meta-analysis
#12
Xiaoping Zhao, Zhi Xu, Haoseng Li
This meta-analysis investigated the relationship between non-steroidal anti-inflammatory drugs (NSAIDs) and lymph node/distant metastasis. Relevant sources were identified from MEDLINE, EMBASE, PubMed, and Cochrane Library. Studies that reported the odds ratio (OR)/risk ratio (RR)/hazard ratio (HR) with 95% confidence intervals (CIs) for the associations of interested outcomes were included. Pooled effect estimates were obtained by using random- or fixed-effect model depending on the heterogeneity across these studies...
May 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28485352/an-institutional-analysis-of-clinicopathological-features-of-triple-negative-breast-cancer
#13
D Sharma, G Singh
AIM: Most common breast cancer in India among female is breast cancer. This is heterogeneous disease, one of the subtypes, triple negative breast cancer (TNBC) defined as no expression of estrogen, progesterone receptor and neither expression nor amplification of human epidermal growth factor receptor 2/neu. TNBC is more frequent and aggressive in younger age group. The aim of this study was to evaluate clinicopathological features and outcome in TNBC versus non-TNBC group of patients...
October 2016: Indian Journal of Cancer
https://www.readbyqxmd.com/read/28476377/nodal-metastasis-signatures-in-breast-cancer
#14
Kyeongmee Park, Joo Hyun Lee, Hyun Ho Han, Seong Gyeong Mun, Suki Kang, Youn Jin Cha, Ja-Seung Koo, Min Ju Kim, Hye Sun Lee, Jieun Moon, Nam Hoon Cho
Although the molecular taxonomy of invasive breast cancer is based on heterogeneous histologic types, pathologic nodal (pN) stage remains one of the most important independent prognostic factors. Although node-positive number (NPN) has been widely as an accepted staging algorithm of pN stage, the node-positive ratio (NPR) in totally resected axillary nodes has been considered as another reasonable indicator. We aimed to identify signatures to play a predictive role in nodal metastasis for analytic validation between the primary breast cancers with positive node metastasis and those with negative node metastasis...
June 2017: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28471197/-circulating-myeloid-suppressor-cells-and-their-role-in-tumour-immunology
#15
K Pilatova, E Budinská, B Bensciková, R Nenutil, R Šefr, L Fedorová, B Hanáková, V Brychtová, L Zdražilová Dubská
BACKGROUND: Myeloid-derived suppressor cells (MDSCs) are heterogenic population of multipotent progenitors of myeloid lineage. For their immunosuppressive effect, MDSC are responsible for tumour escape from the host immune surveillance. Furthermore, MDSCs support tumour by promotion of angiogenesis and metastasis. Membrane markers of human MDSCs are myeloid markers CD11b and CD13, these cells are HLA-Drlow/- and expression of CD15 or CD14 differentiate them into granulocytic (Gr-MDSCs) and monocytic (Mo-MDSCs), resp...
2017: Klinická Onkologie: Casopis Ceské a Slovenské Onkologické Spolecnosti
https://www.readbyqxmd.com/read/28466296/t-independent-response-mediated-by-oncolytic-tanapoxvirus-recombinants-expressing-interleukin-2-and-monocyte-chemoattractant-protein-1-suppresses-human-triple-negative-breast-tumors
#16
Yogesh R Suryawanashi, Tiantian Zhang, Helene M Woyczesczyk, John Christie, Emily Byers, Steven Kohler, Robert Eversole, Charles Mackenzie, Karim Essani
Human triple negative breast cancer (TNBC) is an aggressive disease, associated with a high rate of recurrence and metastasis. Current therapeutics for TNBC are limited, highly toxic and show inconsistent efficacy due to a high degree of intra-tumoral and inter-tumoral heterogeneity. Oncolytic viruses (OVs) are an emerging treatment option for cancers. Several OVs are currently under investigation in preclinical and clinical settings. Here, we examine the oncolytic potential of two tanapoxvirus (TPV) recombinants expressing mouse monocyte chemoattractant protein (mMCP)-1 [also known as mCCL2] and mouse interleukin (mIL)-2, in human TNBC, in vitro and in vivo...
June 2017: Medical Oncology
https://www.readbyqxmd.com/read/28461975/intratumoral-morphological-heterogeneity-of-breast-cancer-as-an-indicator-of-the-metastatic-potential-and-tumor-chemosensitivity
#17
T S Gerashchenko, M V Zavyalova, E V Denisov, N V Krakhmal, D N Pautova, N V Litviakov, S V Vtorushin, N V Cherdyntseva, V M Perelmuter
Breast cancer (BC) demonstrates considerable intratumoral morphological heterogeneity. The aim of this work was to evaluate the relationship among different morphological structures, the rate of metastasis, and efficacy of neoadjuvant chemotherapy (NAC) in NAC-treated (n = 427) and NAC-naïve (n = 249) BC patients. We also studied the involvement of an epithelial-mesenchymal transition (EMT) in the development of the intratumoral morphological heterogeneity of BC. We found a significant association between the intratumoral morphological heterogeneity and the rate of BC metastasis and response to NAC, which, in most cases, correlated with the presence of alveolar and trabecular structures...
January 2017: Acta Naturae
https://www.readbyqxmd.com/read/28442559/impact-of-27-hydroxylase-cyp27a1-and-27-hydroxycholesterol-in-breast-cancer
#18
Siker Kimbung, Chingyi Chang, Pär-Ola Bendahl, Laura Dubois, Will J Thompson, Donald P McDonnell, Signe Borgquist
The impact of systemic 27-hydroxycholesterol (27HC) and intra-tumoral CYP27A1 expression on pathobiology and clinical response to statins in breast cancer needs clarification. 27HC is an oxysterol produced from cholesterol by the monooxygenase CYP27A1, which regulates intracellular cholesterol homeostasis. 27HC also acts as an endogenous selective estrogen receptor (ER) modulator capable of increasing breast cancer growth and metastasis. 27HC levels can be modulated by statins or direct inhibition of CYP27A1, thereby attenuating its pro-tumorigenic activities...
April 25, 2017: Endocrine-related Cancer
https://www.readbyqxmd.com/read/28430642/immunocompetent-mouse-allograft-models-for-development-of-therapies-to-target-breast-cancer-metastasis
#19
Yuan Yang, Howard H Yang, Ying Hu, Peter H Watson, Huaitian Liu, Thomas R Geiger, Miriam R Anver, Diana C Haines, Philip Martin, Jeffrey E Green, Maxwell P Lee, Kent W Hunter, Lalage M Wakefield
Effective drug development to combat metastatic disease in breast cancer would be aided by the availability of well-characterized preclinical animal models that (a) metastasize with high efficiency, (b) metastasize in a reasonable time-frame, (c) have an intact immune system, and (d) capture some of the heterogeneity of the human disease. To address these issues, we have assembled a panel of twelve mouse mammary cancer cell lines that can metastasize efficiently on implantation into syngeneic immunocompetent hosts...
May 9, 2017: Oncotarget
https://www.readbyqxmd.com/read/28429735/phylogenetic-analysis-of-metastatic-progression-in-breast-cancer-using-somatic-mutations-and-copy-number-aberrations
#20
David Brown, Dominiek Smeets, Borbála Székely, Denis Larsimont, A Marcell Szász, Pierre-Yves Adnet, Françoise Rothé, Ghizlane Rouas, Zsófia I Nagy, Zsófia Faragó, Anna-Mária Tőkés, Magdolna Dank, Gyöngyvér Szentmártoni, Nóra Udvarhelyi, Gabriele Zoppoli, Lajos Pusztai, Martine Piccart, Janina Kulka, Diether Lambrechts, Christos Sotiriou, Christine Desmedt
Several studies using genome-wide molecular techniques have reported various degrees of genetic heterogeneity between primary tumours and their distant metastases. However, it has been difficult to discern patterns of dissemination owing to the limited number of patients and available metastases. Here, we use phylogenetic techniques on data generated using whole-exome sequencing and copy number profiling of primary and multiple-matched metastatic tumours from ten autopsied patients to infer the evolutionary history of breast cancer progression...
April 20, 2017: Nature Communications
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