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https://www.readbyqxmd.com/read/29149504/mybl1-rearrangements-and-myb-amplification-in-breast-adenoid-cystic-carcinomas-lacking-the-myb-nfib-fusion-gene
#1
Jisun Kim, Felipe C Geyer, Luciano G Martelotto, Charlotte K Y Ng, Raymond S Lim, Pier Selenica, Anqi Li, Fresia Pareja, Nicola Fusco, Marcia Edelweiss, Rahul Kumar, Rodrigo Gularte-Merida, Andre N Forbes, Ekta Khurana, Odette Mariani, Sunil Badve, Anne Vincent-Salomon, Larry Norton, Jorge S Reis-Filho, Britta Weigelt
Breast adenoid cystic carcinoma (AdCC), a rare type of triple-negative breast cancer (TNBC), has been shown to be driven by MYB pathway activation, most often underpinned by the MYB-NFIB fusion gene. Alternative genetic mechanisms, such as MYBL1 rearrangements, have been reported in MYB-NFIB-negative salivary gland AdCCs. Here we report on the molecular characterization by massively parallel sequencing of four breast AdCCs lacking the MYB-NFIB fusion gene. In two cases, we identified MYBL1 rearrangements (MYBL1-ACTN1 and MYBL1-NFIB), which were associated with MYBL1 overexpression...
November 17, 2017: Journal of Pathology
https://www.readbyqxmd.com/read/29148091/intrinsic-subtypes-of-breast-cancers-initially-assessed-as-probably-benign-or-of-low-suspicion-on-ultrasonography-differ-according-to-tumor-size
#2
Jieun Koh, Min Jung Kim, Hee Jung Moon, Jung Hyun Yoon, Vivian Youngjean Park, Eun-Kyung Kim
OBJECTIVES: To investigate whether the intrinsic subtypes of breast cancers initially assessed as American College of Radiology Breast Imaging and Reporting System (BI-RADS) category 3 or 4a differ according to tumor size. METHODS: A total of 444 breast cancers in 439 patients initially assessed as BI-RADS 3 or 4a through ultrasound-guided core needle biopsy were included. Tumors were classified by the size criterion of 10 mm or smaller or larger than 10 mm and categorized as the luminal type (estrogen receptor [ER] positive and/or progesterone receptor [PR] positive and human epidermal growth factor receptor 2 [HER2] negative), HER2 type (HER2 positive regardless of ER or PR status), or triple-negative type (ER negative, PR negative, and HER2 negative)...
November 17, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/29147445/role-of-taxanes-in-triple-negative-breast-cancer-a-study-from-tertiary-cancer-center-in-south-india
#3
K C Lakshmaiah, Abhishek Anand, K Govind Babu, Lokanatha Dasappa, Linu Abraham Jacob, Suresh Babu M C, K N Lokesh, A H Rudresha, L K Rajeev, Smitha C Saldanha, G V Giri, Deepak Koppaka
Background: Breast cancer is the most common female cancer seen globally. Triple-negative breast cancer (TNBC) is a special subtype without any obvious target and optimum treatment remains challenging. The aim was to study the clinical, pathological profile and treatment outcome of TNBC patients. Methods: This was a retrospective observational study of TNBC patients diagnosed from January 2010 to June 2012 at a tertiary cancer center in South India. Patient's clinical and pathological characteristics were studied...
August 2017: World Journal of Oncology
https://www.readbyqxmd.com/read/29147072/paradoxical-association-of-postoperative-plasma-sphingosine-1-phosphate-with-breast-cancer-aggressiveness-and-chemotherapy
#4
Rajesh Ramanathan, Ali Raza, Jamie Sturgill, Debra Lyon, Jessica Young, Nitai C Hait, Kazuaki Takabe
Sphingosine-1-phosphate (S1P) is a bioactive lipid mediator that has been shown to serve an important regulatory function in breast cancer progression. This study analyzes plasma S1P levels in breast cancer patients undergoing adjuvant therapy as compared to healthy control volunteers. 452 plasma S1P samples among 158 breast cancer patients, along with 20 healthy control volunteers, were analyzed. Mean S1P levels did not significantly differ between cancer patients and controls. Smoking was associated with higher S1P levels in cancer patients...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/29146734/humanized-mice-in-studying-efficacy-and-mechanisms-of-pd-1-targeted-cancer-immunotherapy
#5
Minan Wang, Li-Chin Yao, Mingshan Cheng, Danying Cai, Jan Martinek, Chong-Xian Pan, Wei Shi, Ai-Hong Ma, Ralph W De Vere White, Susan Airhart, Edison T Liu, Jacques Banchereau, Michael A Brehm, Dale L Greiner, Leonard D Shultz, Karolina Palucka, James G Keck
Establishment of an in vivo small animal model of human tumor and human immune system interaction would enable preclinical investigations into the mechanisms underlying cancer immunotherapy. To this end, non-obese diabetic (NOD).Cg-Prkdc(scid)IL2rg(tm1Wjl) /Sz (null; NSG) mice were transplanted with human (h)CD34(+) hematopoietic progenitor and stem cells, which leads to the development of human hematopoietic and immune systems [humanized NSG (HuNSG)]. HuNSG mice received human leukocyte antigen partially matched tumor implants from patient-derived xenografts [PDX; nonsmall cell lung cancer (NSCLC), sarcoma, bladder cancer, and triple-negative breast cancer (TNBC)] or from a TNBC cell line-derived xenograft (CDX)...
November 16, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29146102/outcomes-by-molecular-subtype-after-accelerated-partial-breast-irradiation-using-single-entry-catheters
#6
Aman Saini, Robert Kuske, Coral Quiet, Cheri Pantoja, Daniel Reed, Victor Zannis
PURPOSE: Tumor biology is being recognized as an important indicator of prognosis and risk of locoregional recurrence. Here, we determine actuarial recurrence rates by approximated molecular subtype for women treated with single-entry catheter accelerated partial breast irradiation (sAPBI). METHODS AND MATERIALS: One thousand four hundred eighty-six women with invasive cancer having known ER, PR, and Her2 status and at least 1-year of followup were treated using MammoSite, Contura, or SAVI sAPBI from 2002 to 2014 at our institution...
November 13, 2017: Brachytherapy
https://www.readbyqxmd.com/read/29145974/immunotherapy-for-triple-negative-breast-cancer-existing-challenges-and-exciting-prospects
#7
Hongyan Jia, Cristina I Truica, Bin Wang, Yanhong Wang, Xingcong Ren, Harold A Harvey, Jianxun Song, Jin-Ming Yang
Patients with breast tumors that do not express the estrogen receptor, the progesterone receptor, nor Her-2/neu are hence termed "triple negatives", and generally have a poor prognosis, with high rates of systemic recurrence and refractoriness to conventional therapy regardless of the choice of adjuvant treatment. Thus, more effective therapeutic options are sorely needed for triple-negative breast cancer (TNBC), which occurs in approximately 20% of diagnosed breast cancers. In recent years, exploiting intrinsic mechanisms of the host immune system to eradicate cancer cells has achieved impressive success, and the advances in immunotherapy have yielded potential new therapeutic strategies for the treatment of this devastating subtype of breast cancer...
May 2017: Drug Resistance Updates: Reviews and Commentaries in Antimicrobial and Anticancer Chemotherapy
https://www.readbyqxmd.com/read/29145561/clinical-significance-of-cd73-in-triple-negative-breast-cancer-multiplex-analysis-of-a-phase-iii-clinical-trial
#8
L Buisseret, S Pommey, B Allard, S Garaud, M Bergeron, I Cousineau, L Ameye, Y Bareche, M Paesmans, J P A Crown, A Di Leo, S Loi, M Piccart-Gebhart, K Willard-Gallo, C Sotiriou, J Stagg
Background: CD73 is an ecto-enzyme that promotes tumor immune escape through the production of immunosuppressive extracellular adenosine in the tumor microenvironment. Several CD73 inhibitors and adenosine receptor antagonists are being evaluated in phase I clinical trials. Patients and methods: Full-face sections from formalin-fixed paraffin-embedded primary breast tumors from 122 samples of triple-negative breast cancer from the BIG 02-98 adjuvant phase III clinical trial were included in our analysis...
November 14, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/29145336/expression-of-hormone-receptors-in-low-grade-adenosquamous-carcinoma-of-the-breast-a-case-report
#9
Hai-Bo Wu, An-Li Zhang, Wei Wang, Heng Li
RATIONALE: Low-grade adenosquamous carcinoma (LGASC) is a rare subtype of metaplastic breast carcinoma which is generally recognized as a characteristic subgroup of triple-negative breast cancers previously. However, in this study, we reported for the first time a case of LGASC with hormone receptors expression. PATIENT CONCERNS: Pathological analysis of breast tumor specimen obtained by a 42-year-old female patient was performed. Morphologically, it composed of glandular structures with scattered squamous differentiation accompanied by haphazard arrangement of spindle cell stroma...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29144746/oxyprenylated-phenylpropanoids-bind-to-mt1-melatonin-receptors-and-inhibit-breast-cancer-cell-proliferation-and-migration
#10
Mahmud Hasan, Salvatore Genovese, Serena Fiorito, Francesco Epifano, Paula A Witt-Enderby
Oxyprenylated compounds (i.e., ferulic acid and coumarin derivatives) demonstrate neuroprotection and anticancer properties as reported in previous studies. We have tested the affinity of oxyprenylated ferulic acid (1-4) and umbelliferone derivatives (5-11) to melatonin receptors as well as their antiproliferation and antimigratory properties against breast cancer (BC) cell lines. All the compounds except for ferulic acid, boropinic acid, and umbelliferone had binding affinities to melatonin receptors in the nM to μM range, and both auraptene and umbellinprenin reduced BC cell proliferation and migration in phenotypically diverse BC including triple negative...
November 16, 2017: Journal of Natural Products
https://www.readbyqxmd.com/read/29144137/design-of-novel-3-pyrimidinylazaindole-based-cdk2-9-inhibitors-with-potent-in-vitro-and-in-vivo-antitumor-efficacy-in-a-triple-negative-breast-cancer-model
#11
Umed Singh, Gousia Chashoo, Sameer U Khan, Priya Mahajan, Amit Nargotra, Girish Mahajan, Amarinder Singh, Anjna Sharma, Mubashir Javeed Mintoo, Santosh Kumar Guru, Hariprasad Aruri, Thanusha Thatikonda, Promod Sahu, Pankaj Chibber, Vikas Kumar, Sameer A Mir, Sonali S Bharate, Sreedhar Madishetti, Utpal Nandi, Gurdarshan Singh, Dilip Manikrao Mondhe, Shashi Bhushan, Fayaz Malik, Serge Mignani, Ram A Vishwakarma, Parvinder Pal Singh
In the present study, novel series of 3-pyrimidinylazaindoles were designed and synthesized using bioinformatics strategy as cyclin-dependent kinases CDK2 and CDK9 inhibitors, which play critical roles in cell-cycle control and regulation of cell transcription. The present approach has given new dimensions to existing SAR and opens the new opportunity for lead optimization from comparatively inexpensive starting materials. The study led to the identification of alternative lead candidate 4ab with nanomolar potency against CDK2 and CDK9 and potent anti-proliferative activities against a panel of tested tumor cell lines along better safety ratio of ~30 in comparison to reported leads...
November 16, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29142600/co-activation-of-hedgehog-and-wnt-signaling-pathways-is-associated-with-poor-outcomes-in-triple-negative-breast-cancer
#12
Kimberly M Arnold, Ryan T Pohlig, Jennifer Sims-Mourtada
Hedgehog (HH) and Wnt pathway activation have been implicated in poor prognosis of breast cancer. Crosstalk between these two pathways has been demonstrated to be important in breast cancer progression, however the association between these two pathways and breast cancer survival rate is unknown. The present study comprised a cohort of 36 patients with triple negative breast cancer (TNBC) to investigate co-activation of HH and canonical Wnt pathway in association to patient outcome. All patients had varying degrees of cytoplasmic sonic HH and glioma-associated oncogene homolog (Gli)-1 staining, which positively correlated with tumor stage...
November 2017: Oncology Letters
https://www.readbyqxmd.com/read/29142588/characterization-of-hormonal-receptors-and-human-epidermal-growth-factor-receptor-2-in-tissues-of-women-with-breast-cancer-at-muhimbili-national-hospital-dar-es-salaam-tanzania
#13
Amos Rodger Mwakigonja, Nyanda Elias Lushina, Ally Mwanga
Background: Breast cancer is a leading cause of morbidity and deaths among women worldwide. In Tanzania there is no published data on human epidermal growth receptor-2 (HER2/neu) expression in breast carcinoma. Hormonal receptors and HER2/neu status reportedly influence post-mastectomy adjuvant therapy and predict treatment outcome and prognosis. Here we evaluate hormonal receptors and HER-2 status in biopsies of women with breast cancer at Muhimbili National Hospital (MNH). Methods: A cross-sectional study of female breast post-modified radical mastectomy (MRM)/incisional biopsies confirmed to be carcinoma at the Histopathology Unit (January-December 2013)...
2017: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/29142367/case-of-carcinoma-breast-with-unusually-large-tumor-thrombus-in-superior-vena-cava-detected-on-18-f-fluorodeoxyglucose-positron-emission-tomography-computed-tomography-scan
#14
Arun Sasikumar, Anto Baby, Mathews Jose, Retcy Mary Paul
A 60-year-old female with triple negative breast cancer, postsurgery, neoadjuvant chemotherapy and radiotherapy, on follow-up had facial puffiness and giddiness. (18)F-fluorodeoxyglucose positron emission tomography/computed tomography ((18)F-FDG PET/CT) done for suspected recurrence evaluation revealed a large tumor thrombus (TT) in superior vena cava (SVC) with radiological evidence of SVC obstruction. (18)F-FDG PET/CT also showed evidence of FDG avid brain metastases, lymph nodal metastases, and metastatic soft tissue deposits...
October 2017: Indian Journal of Nuclear Medicine: IJNM: the Official Journal of the Society of Nuclear Medicine, India
https://www.readbyqxmd.com/read/29142206/egfr-conjunct-fscn1-as-a-novel-therapeutic-strategy-in-triple-negative-breast-cancer
#15
Chao-Qun Wang, Yang Li, Bi-Fei Huang, Yong-Ming Zhao, Hui Yuan, Dongfang Guo, Chen-Ming Su, Gui-Nv Hu, Qian Wang, Tengyun Long, Yan Wang, Chih-Hsin Tang, Xiaoni Li
Emerging evidence indicates that Fascin-1 (FSCN1) may possess a causal role in the development of several types of cancers and serves as a novel biomarker of aggressiveness in certain carcinomas. However, the regulatory mechanism of FSCN1 in triple-negative breast cancer (TNBC) cell invasion and migration is still largely unknown. In our study, we observed that the FSCN1 expression rates were significantly higher in invasive ductal carcinoma, compared with both usual ductal hyperplasia and ductal carcinoma in situ...
November 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29140689/tissue-inhibitor-of-metalloprotease-2-timp-2-bioprocess-development-physicochemical-biochemical-and-biological-characterization-of-highly-expressed-recombinant-protein
#16
Ananda Chowdhury, Robert G Brinson, Beiyang Wei, William G Stetler-Stevenson
Tissue Inhibitor of Metalloprotease -2 (TIMP-2) is a secreted 21 kDa multifunctional protein first described as an endogenous inhibitor of matrix metalloproteinases (MMPs) that prevents breakdown of the extracellular matrix often observed in chronic diseases. TIMP-2 diminishes growth factor-mediated cell proliferation in vitro, as well as neoangiogenesis and tumor growth in vivo independent of its MMP-inhibitory activity, . These physiological properties make TIMP-2 an excellent candidate for further pre-clinical development as a biologic therapy of cancer...
November 15, 2017: Biochemistry
https://www.readbyqxmd.com/read/29138806/effect-of-bis-hydroxymethyl-alkanoate-curcuminoid-derivative-mth-3-on-cell-cycle-arrest-apoptotic-and-autophagic-pathway-in-triple-negative-breast-adenocarcinoma-mda-mb-231-cells-an-in-vitro-study
#17
Ling-Chu Chang, Min-Tsang Hsieh, Jai-Sing Yang, Chi-Cheng Lu, Fuu-Jen Tsai, Je-Wei Tsao, Yu-Jen Chiu, Sheng-Chu Kuo, Kuo-Hsiung Lee
Curcumin has been shown to exert potential antitumor activity in vitro and in vivo involved in multiple signaling pathways. However, the application of curcumin is still limited because of its poor hydrophilicity and low bio-availability. In the present study, we investigated the therapeutic effects of a novel and water soluble bis(hydroxymethyl) alkanoate curcuminoid derivative, MTH-3, on human breast adenocarcinoma MDA-MB-231 cells. This study investigated the effect of MTH-3 on cell viability, cell cycle and induction of autophagy and apoptosis in MDA-MB-231 cells...
November 14, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/29138761/a-metastasis-biomarker-metasite-breast%C3%A2-score-is-associated-with-distant-recurrence-in-hormone-receptor-positive-her2-negative-early-stage-breast-cancer
#18
Joseph A Sparano, Robert Gray, Maja H Oktay, David Entenberg, Thomas Rohan, Xiaonan Xue, Michael Donovan, Michael Peterson, Anthony Shuber, Douglas A Hamilton, Timothy D'Alfonso, Lori J Goldstein, Frank Gertler, Nancy E Davidson, John Condeelis, Joan Jones
Metastasis is the primary cause of death in early-stage breast cancer. We evaluated the association between a metastasis biomarker, which we call "Tumor Microenviroment of Metastasis" (TMEM), and risk of recurrence. TMEM are microanatomic structures where invasive tumor cells are in direct contact with endothelial cells and macrophages, and which serve as intravasation sites for tumor cells into the circulation. We evaluated primary tumors from 600 patients with Stage I-III breast cancer treated with adjuvant chemotherapy in trial E2197 (NCT00003519), plus endocrine therapy for hormone receptor (HR)+ disease...
2017: NPJ Breast Cancer
https://www.readbyqxmd.com/read/29138558/%C3%AE-v%C3%AE-3-integrin-targeted-micellar-mertansine-prodrug-effectively-inhibits-triple-negative-breast-cancer-in-vivo
#19
Ping Zhong, Xiaolei Gu, Ru Cheng, Chao Deng, Fenghua Meng, Zhiyuan Zhong
Antibody-mertansine (DM1) conjugates (AMCs) are among the very few active targeting therapeutics that are approved or clinically investigated for treating various cancers including metastatic breast cancer. However, none of the AMCs are effective for the treatment of triple-negative breast cancers (TNBCs). Here, we show that cRGD-decorated, redox-activatable micellar mertansine prodrug (cRGD-MMP) can effectively target and deliver DM1 to αvβ3 integrin overexpressing MDA-MB-231 TNBC xenografts in nude mice, resulting in potent tumor growth inhibition...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29138528/the-predictive-value-of-pitx2-dna-methylation-for-high-risk-breast-cancer-therapy-current-guidelines-medical-needs-and-challenges
#20
REVIEW
Michaela Aubele, Manfred Schmitt, Rudolf Napieralski, Stefan Paepke, Johannes Ettl, Magdalena Absmaier, Viktor Magdolen, John Martens, John A Foekens, Olaf G Wilhelm, Marion Kiechle
High-risk breast cancer comprises distinct tumor entities such as triple-negative breast cancer (TNBC) which is characterized by lack of estrogen (ER) and progesterone (PR) and the HER2 receptor and breast malignancies which have spread to more than three lymph nodes. For such patients, current (inter)national guidelines recommend anthracycline-based chemotherapy as the standard of care, but not all patients do equally benefit from such a chemotherapy. To further improve therapy decision-making, predictive biomarkers are of high, so far unmet, medical need...
2017: Disease Markers
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