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https://www.readbyqxmd.com/read/29437707/proteolytic-release-of-the-p75ntr-intracellular-domain-by-adam10-promotes-metastasis-and-resistance-to-anoikis
#1
Xin Bao, Jianbo Shi, Furong Xie, Zengying Liu, Jingshuang Yu, Wan-Tao Chen, Zhiyuan Zhang, Qin Xu
Resistance to anoikis allows cancer cells to survive during systemic circulation, however, the mechanism underlying anoikis resistance remains unclear. Here we show that A disintegrin and metalloprotease 10 (ADAM10)-mediated cleavage of p75 neurotrophin receptor (p75NTR) and subsequent generation of the p75NTR intracellular domain (ICD) endows cancer cells with resistance to anoikis. p75NTR ICD promoted expression of TNF receptor associated factor 6 (TRAF6), a critical intermediary in p75NTR ICD-mediated signal transduction, at the translational level...
February 6, 2018: Cancer Research
https://www.readbyqxmd.com/read/29415991/regulation-of-senescence-escape-by-the-cdk4-ezh2-ap2m1-pathway-in-response-to-chemotherapy
#2
Mélanie Le Duff, Julien Gouju, Barbara Jonchère, Jordan Guillon, Bertrand Toutain, Alice Boissard, Cécile Henry, Catherine Guette, Eric Lelièvre, Olivier Coqueret
Senescence is a tumor suppressive mechanism that induces a permanent proliferative arrest in response to an oncogenic insult or to the genotoxic stress induced by chemotherapy. We have recently described that some cells can escape this arrest, either because senescence was incomplete or as a consequence of a phenotypic adaptation. Malignant cells which resisted senescence emerged as more transformed cells that resist anoikis and rely on survival pathways activated by Akt and Mcl-1. In this study, we further characterize senescence escape, investigating how emergent cells could reproliferate...
February 7, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29393399/reduced-gliotoxin-induces-ros-mediated-anoikis-in-human-colorectal-cancer-cells
#3
Junxiong Chen, Qiong Lou, Lu He, Chuangyu Wen, Mengmeng Lin, Zefeng Zhu, Fang Wang, Lanlan Huang, Wenjian Lan, Aikichi Iwamoto, Xiangling Yang, Huanliang Liu
Reduced-gliotoxin is a small molecule derived from the secondary metabolites of marine fungi; compared to other gliotoxin analogues, it exhibits potent anticancer effects. However, the molecular basis of the death of colorectal cancer (CRC) cells induced by reduced-gliotoxin is unclear. Thus, the aim of this study was to investigate the potency of reduced-gliotoxin against CRC cells and to elucidate the underlying mechanisms. Cell morphology, flow cytometric analysis and western bolt analysis were performed to examine the functions and mechanisms of cell death induced by reduced-gliotoxin...
February 1, 2018: International Journal of Oncology
https://www.readbyqxmd.com/read/29388704/a-novel-anti-cancer-agent-fpdhp-induces-anoikis-in-various-human-cancer-cells-through-activation-of-calpain-and-downregulation-of-anoikis-related-molecules
#4
Seon Goo Kim, Ji Hea Yooun, Dong Eun Kim, Eung-Seok Lee, Taeg Kyu Kwon, Shin Kim, Jong Wook Park
Resistance to anoikis and growth in anchorage-independent conditions are hallmarks of highly metastatic cancer cells. Anoikis is a type of apoptosis induced by inadequate cell/extracellular matrix (ECM) attachment and an attractive anti-cancer therapeutic strategy in cancer chemotherapeutic field. Therefore, the development of anoikis-inducing agents is useful and promising to overcome cancer. When FPDHP, a novel anoikis-inducing agent, was treated within 3h, FPDHP induced massive cell detachment in various human cancer cells, irrespective of apoptosis...
February 1, 2018: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29380675/multiscale-simulation-of-the-interaction-of-calreticulin-thrombospondin-1-complex-with-a-model-membrane-microdomain
#5
Lingyun Wang, Joanne E Murphy-Ullrich, Yuhua Song
Cell surface calreticulin (CRT) binding to thrombospondin-1 (TSP1), regulates cell adhesion, migration, anoikis resistance, and collagen production. Due to the essential role of membrane microdomains in CRT-mediated focal adhesion disassembly, we previously studied the effect of raft-like bilayers on TSP1-CRT interactions with all-atom molecular dynamics (AAMD) simulations. However, the simulated systems of protein on the surface of the bilayer(s) in the explicit solvent are too large for long time scale AAMD simulations due to computational expense...
January 30, 2018: Journal of Biomolecular Structure & Dynamics
https://www.readbyqxmd.com/read/29364225/analyzing-the-communication-between-monocytes-and-primary-breast-cancer-cells-in-an-extracellular-matrix-extract-ecme-based-three-dimensional-system
#6
Nancy Adriana Espinoza-Sánchez, Gloria Karina Chimal-Ramírez, Ezequiel Moisés Fuentes-Pananá
Embedded in the extracellular matrix (ECM), normal and neoplastic epithelial cells intimately communicate with hematopoietic and non-hematopoietic cells, thus greatly influencing normal tissue homeostasis and disease outcome. In breast cancer, tumor-associated macrophages (TAMs) play a critical role in disease progression, metastasis, and recurrence; therefore, understanding the mechanisms of monocyte chemoattraction to the tumor microenvironment and their interactions with tumor cells is important to control the disease...
January 8, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29356399/sall4-khdrbs3-network-enhances-stemness-by-modulating-cd44-splicing-in-basal-like-breast-cancer
#7
Yoshiaki Matsumoto, Junji Itou, Fumiaki Sato, Masakazu Toi
Understanding the mechanism by which cancer cells enhance stemness facilitates cancer therapies. Here, we revealed that a stem cell transcription factor, SALL4, functions to enhance stemness in basal-like breast cancer cells. We used shRNA-mediated knockdown and gene overexpression systems to analyze gene functions. To evaluate stemness, we performed a sphere formation assay. In SALL4 knockdown cells, the sphere formation ability was reduced, indicating that SALL4 enhances stemness. CD44 is a membrane protein and is known as a stemness factor in cancer...
January 22, 2018: Cancer Medicine
https://www.readbyqxmd.com/read/29345000/cell-death-under-epithelial-mesenchymal-transition-control-in-prostate-cancer-therapeutic-response
#8
REVIEW
Diane Begemann, Harry Anastos, Natasha Kyprianou
Prostate cancer is a widespread problem among men, with >160 000 new cases in 2017 alone. Androgen deprivation therapy is commonly used in prostate cancer treatment to block androgens required for cancer growth, but disease relapse after androgen deprivation therapy is both common and severe. Changes in androgen receptor signaling from androgen deprivation therapy have been linked to therapeutic resistance and tumor progression. Resistant cells can become reprogrammed to undergo epithelial-mesenchymal transition, a phenotypic switch from benign, epithelial cells to a mobile cell with mesenchymal traits...
January 17, 2018: International Journal of Urology: Official Journal of the Japanese Urological Association
https://www.readbyqxmd.com/read/29339542/ampk-akt-double-negative-feedback-loop-in-breast-cancer-cells-regulates-their-adaptation-to-matrix-deprivation
#9
Manipa Saha, Saurav Kumar, Shoiab Bukhari, Sai A Balaji, Prashant Kumar, Sravanth K Hindupur, Annapoorni Rangarajan
Cell detachment from the extracellular matrix triggers anoikis. Disseminated tumor cells must adapt to survive matrix deprivation, while still retaining the ability to attach at secondary sites and re-initiate cell division. In this study, we illuminate mechanisms that enable reversible matrix attachment by breast cancer cells. Matrix deprival triggered AMPK activity and concomitantly inhibited AKT activity by upregulating the AKT phosphatase PHLPP2. The resultant pAMPKhigh/pAKTlow state was critical for cell survival in suspension, as PHLPP2 silencing also increased anoikis while impairing autophagy and metastasis...
January 16, 2018: Cancer Research
https://www.readbyqxmd.com/read/29338725/herbal-formula-ygjdsj-inhibits-anchorage-independent-growth-and-induces-anoikis-in-hepatocellular-carcinoma-bel-7402-cells
#10
Bing Hu, Tong Zhang, Hong-Mei An, Jia-Lu Zheng, Xia Yan, Xiao-Wei Huang
BACKGROUND: Based on clinical medications and related studies, we established a Yang-Gan Jie-Du Sang-Jie (YGJDSJ) herbal formula for hepatocarcinoma treatment. In present study, we evaluated the anti-cancer potential of YGJDSJ on suspension-grown human hepatocellular carcinoma Bel-7402 cells. METHODS: Bel-7402 cells were cultured in poly(2-hydroxyethyl methacrylate) (poly-HEMA) coated plates and treated with YGJDSJ. Anchorage-independent cell growth was detected by cell Counting Kit-8 (CCK-8) assay and soft agar colony formation assay...
January 16, 2018: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/29324307/integrin-alpha5beta1-suppresses-rbmscs-anoikis-and-promotes-nitric-oxide-production
#11
Hai-Ying Chen, Li Pan, Hong-Li Yang, Peng Xia, Wan-Cheng Yu, Wen-Qiang Tang, Ying-Xin Zhang, Shuang-Feng Chen, Yu-Zeng Xue, Le-Xin Wang
BACKGROUND: Cell based therapy has been heralded as a novel, promising therapeutic strategy for cardiovascular diseases including pulmonary arterial hypertension (PAH). However, the low survival rate after transplantation due to cell death via anoikis is a major obstacle in stem cell therapy. Cells adhesion via Integrin alpha5beta1 (ITGA5B1) has a tendency to exert higher maximum forces. The present study aimed to evaluate the potential protective effect of ITGA5B1 on rat bone marrow mesenchymal stem cells (rBMSCs) from anoikis...
January 8, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29322476/negative-regulators-of-cell-death-pathways-in-cancer-perspective-on-biomarkers-and-targeted-therapies
#12
REVIEW
Ali Razaghi, Kirsten Heimann, Patrick M Schaeffer, Spencer B Gibson
Cancer is a primary cause of human fatality and conventional cancer therapies, e.g., chemotherapy, are often associated with adverse side-effects, tumor drug-resistance, and recurrence. Molecularly targeted therapy, composed of small-molecule inhibitors and immunotherapy (e.g., monoclonal antibody and cancer vaccines), is a less harmful alternative being more effective against cancer cells whilst preserving healthy tissues. Drug-resistance, however, caused by negative regulation of cell death signaling pathways, is still a challenge...
January 10, 2018: Apoptosis: An International Journal on Programmed Cell Death
https://www.readbyqxmd.com/read/29321816/erbb-signaling-in-ctcs-of-ovarian-cancer-and-glioblastoma
#13
REVIEW
Anjali Geethadevi, Deepak Parashar, Erin Bishop, Sunila Pradeep, Pradeep Chaluvally-Raghavan
Circulating Tumor Cells (CTCs) are floating cell populations, which are resistant to anoikis after detachment from the primary sites and travel through the circulatory and lymphatic systems to disseminate throughout the body. CTCs are considered as seed cells for metastasis, and thus isolation of CTCs does not require any invasive procedure. Based on the nature and location of ovarian cancer and glioblastoma, the role of CTCs and hematogenous (carried by blood) spreading of tumor cells in these cancers were not understood well...
November 2017: Genes & Cancer
https://www.readbyqxmd.com/read/29305497/glutaminolysis-drives-lung-cancer-metastasis-via-the-plag1-gdh1-axis
#14
(no author information available yet)
PLAG1-mediated GDH1 upregulation promotes LKB1-deficient lung cancer anoikis resistance.
January 5, 2018: Cancer Discovery
https://www.readbyqxmd.com/read/29291405/enhanced-glycometabolism-as-a-mechanism-of-nqo1-potentiated-growth-of-nsclc-revealed-by-metabolomic-profiling
#15
Xuefang Cheng, Fang Liu, Huiying Liu, Guangji Wang, Haiping Hao
NAD(P)H:quinone oxidoreductase 1 (NQO1), a cytoplasmic 2-electron reductase, has been considered as a potential poor prognostic biomarker and a promising therapeutic target for patients with non-small cell lung cancer (NSCLC) due to its frequent overexpression and significantly increased activity in NSCLC. Previous studies have shown that depleting tumor-NQO1 potentiates anoikis and inhibits growth of NSCLC. However, the underlying mechanisms whereby NQO1 potentiates proliferation have not been fully understood...
December 29, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29277177/-effect-of-circular-rna-ubap2-silencing-on-proliferation-and-invasion-of-human-lung-cancer-a549-cells-and-its-mechanism
#16
Yujing Yin, Hui Gao, Jia Guo, Yang Gao
BACKGROUND: It has been proven that circular RNAs (circRNAs) play an important role on the process of many types cancer and circUBAP2 was a cancer-promoting circRNA, however, the role and mechanism in lung cancer was not clear. The aim of this study is to investigate the effects of circUBAP2 on cell proliferation and invasion of human lung cancer A549 cells. METHODS: CCK-8 assay was employed to detect the effect of circUBAP2 sliencing on cell proliferation of A549 cells...
December 20, 2017: Zhongguo Fei Ai za Zhi, Chinese Journal of Lung Cancer
https://www.readbyqxmd.com/read/29273680/igf-system-in-sarcomas-a-crucial-pathway-with-many-unknowns-to-exploit-for-therapy
#17
Caterina Mancarella, Katia Scotlandi
The insulin-like growth factor (IGF) system has gained substantial interest due to its involvement in regulating cell proliferation, differentiation and survival during anoikis and after conventional and targeted therapies. However, results from clinical trials have been largely disappointing, with only a few but notable exceptions, such as trials targeting sarcomas, especially Ewing sarcoma. This review highlights key studies focusing on IGF signaling in sarcomas, specifically studies underscoring the properties that make this system an attractive therapeutic target, and identifies new relationships that may be exploited...
December 22, 2017: Journal of Molecular Endocrinology
https://www.readbyqxmd.com/read/29249655/the-plag1-gdh1-axis-promotes-anoikis-resistance-and-tumor-metastasis-through-camkk2-ampk-signaling-in-lkb1-deficient-lung-cancer
#18
Lingtao Jin, Jaemoo Chun, Chaoyun Pan, Avi Kumar, Guojing Zhang, Youna Ha, Dan Li, Gina N Alesi, Yibin Kang, Lu Zhou, Wen-Mei Yu, Kelly R Magliocca, Fadlo R Khuri, Cheng-Kui Qu, Christian Metallo, Taofeek K Owonikoko, Sumin Kang
Loss of LKB1 is associated with increased metastasis and poor prognosis in lung cancer, but the development of targeted agents is in its infancy. Here we report that a glutaminolytic enzyme, glutamate dehydrogenase 1 (GDH1), upregulated upon detachment via pleomorphic adenoma gene 1 (PLAG1), provides anti-anoikis and pro-metastatic signals in LKB1-deficient lung cancer. Mechanistically, the GDH1 product α-KG activates CamKK2 by enhancing its substrate AMPK binding, which contributes to energy production that confers anoikis resistance...
January 4, 2018: Molecular Cell
https://www.readbyqxmd.com/read/29247692/granzyme-b-in-skin-inflammation-and-disease
#19
REVIEW
Christopher T Turner, Darielle Lim, David J Granville
Granzyme B (GzmB) is a serine protease emerging as an important mediator of skin injury, inflammation and repair. Found at low levels in healthy skin, GzmB is dramatically elevated in chronic disease and inflammatory skin disorders, including diabetic ulcers, hypertrophic scarring, autoimmune skin disorders, cutaneous leishmaniasis and aging skin. Traditionally known for its pro-apoptotic function, the role of GzmB in disease has been redefined due to the discovery of additional activities involving the cleavage of extracellular matrix proteins, epithelial barrier disruption, fibrosis, vascular permeability, anoikis, inflammation and autoimmunity...
December 13, 2017: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/29245910/the-prognostic-value-of-over-expressed-trkb-in-solid-tumors-a-systematic-review-and-meta-analysis
#20
Chunze Zhang, Xiaoting Li, Dan Gao, Haihua Ruan, Zhenzhen Lin, Xiaobo Li, Guang Liu, Zhicheng Ma, Xichuan Li
It is reported recently Tropomyosin-related receptor Kinase B (TrkB) plays key roles in the anoikis resistance during the processes of tumorigenesis and metastasis. However, its prognostic significance for clinical patients remains inconclusive. In order to establish a correct and practicable link between increased TrkB and prognostication of human solid tumors, a meta-analysis was performed in this article. A systematic literature research in the electronic databases PubMed, Embase and Web of Science was performed to identify eligible studies...
November 21, 2017: Oncotarget
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