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https://www.readbyqxmd.com/read/29341316/deferoxamine-promotes-mesenchymal-stem-cell-homing-in-noise-induced-injured-cochlea-through-pi3k-akt-pathway
#1
A A Peyvandi, H-A Abbaszadeh, N Ahmady Roozbahany, A Pourbakht, S Khoshsirat, H Haddadzade Niri, H Peyvandi, S Niknazar
OBJECTIVE: Over 5% of the world's population suffers from disabling hearing loss. Stem cell homing in target tissue is an important aspect of cell-based therapy, which its augmentation increases cell therapy efficiency. Deferoxamine (DFO) can induce the Akt activation, and phosphorylation status of AKT (p-AKT) upregulates CXC chemokine receptor-4 (CXCR4) expression. We examined whether DFO can enhance mesenchymal stem cells (MSCs) homing in noise-induced damaged cochlea by PI3K/AKT dependent mechanism...
January 17, 2018: Cell Proliferation
https://www.readbyqxmd.com/read/29339541/phd3-controls-lung-cancer-metastasis-and-resistance-to-egfr-inhibitors-through-tgf%C3%AE
#2
Higinio Dopeso, Hui-Ke Jiao, Angel M Cuesta, Anne-Theres Henze, Liane Jurida, Michael Kracht, Amparo Acker-Palmer, Boyan K Garvalov, Till Acker
Lung cancer is the leading cause of cancer-related death worldwide, in large part due to its high propensity to metastasize and develop therapy resistance. Adaptive responses to hypoxia and epithelial-mesenchymal transition (EMT) are linked to tumor metastasis and drug resistance, but little is known about how oxygen sensing and EMT intersect to control these hallmarks of cancer. Here we show that the oxygen sensor PHD3 links hypoxic signaling and EMT regulation in the lung tumor microenvironment. PHD3 was repressed by signals that induce EMT and acted as a negative regulator of EMT, metastasis and therapeutic resistance...
January 16, 2018: Cancer Research
https://www.readbyqxmd.com/read/29337896/caffeic-acid-and-metformin-inhibit-invasive-phenotype-induced-by-tgf-%C3%AE-1-in-c-4i-and-htb-35-siha-human-cervical-squamous-carcinoma-cells-by-acting-on-different-molecular-targets
#3
Malgorzata Tyszka-Czochara, Malgorzata Lasota, Marcin Majka
During the progression of epithelial cancer, the cells may lose epithelial markers and gain mesenchymal phenotype via Epithelial-Mesenchymal Transition (EMT). Such transformation of epithelial cancer cells to mesenchymal-like characteristic benefits plasticity and supports their ability to migrate. The aim of this study was to evaluate the influence of natural compound Caffeic Acid (CA) alone and in combination with antidiabetic drug Metformin (Met) on metastatic progression of two human cervical squamous cell cancer lines, C-4I and HTB-35/SiHa cells...
January 16, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29327447/itraq-based-proteomic-analysis-explore-the-influence-of-hypoxia-on-the-proteome-of-dental-pulp-stem-cells-under-3d-culture
#4
Lei Dou, Qifang Yan, Panpan Liang, Pengfei Zhou, Yan Zhang, Ping Ji
Various approaches are used to improve the efficacy of mesenchymal stem cells(MSCs) therapy. Hypoxic preconditioning is one of the most commonly-applied strategy prior to MSCs transplantation for enhancing the therapeutic effect. Identifying the effect of hypoxic preconditioning is helpful for better application. However, the influence of hypoxia on dental tissue derived MSCs cultured in 3D was lacking. Thus, this present study is to investigate the gene expression and proteome of dental pulp stem cells(DPSCs) after hypoxic preconditioning...
January 12, 2018: Proteomics
https://www.readbyqxmd.com/read/29317250/arctigenin-protects-against-ultraviolet-a-induced-damage-to-stemness-through-inhibition-of-the-nf-%C3%AE%C2%BAb-mapk-pathway
#5
See-Hyoung Park, Jae Youl Cho, Sae Woong Oh, Mingyeong Kang, Seung Eun Lee, Ju Ah Yoo, Kwangseon Jung, Jienny Lee, Sang Yeol Lee, Jongsung Lee
The stemness of stem cells is negatively affected by ultraviolet A (UVA) irradiation. This study was performed to examine the effects of arctigenin on UVA-irradiation-induced damage to the stemness of human mesenchymal stem cells (hMSCs) derived from adipose tissue. The mechanisms of action of arctigenin were also investigated. A BrdU-incorporation assay demonstrated that arctigenin attenuated the UVA-induced reduction of the cellular proliferative potential. Arctigenin also increased the UVA-induced reduction in stemness of hMSCs by upregulating stemness-related genes such as SOX2, OCT4, and NANOG...
January 6, 2018: Chemico-biological Interactions
https://www.readbyqxmd.com/read/29308505/-effect-of-mir-21-in-promoting-angiogenesis-differentiation-of-umbilical-cord-blood-mesenchymal-stem-cells-in-vitro
#6
Zhong-Kui Tian, Lin Liu, Dong-Lei Chen, Pei Wang, Jing-Ming Zhang, Yi Tang, Chun-Bo Tang
PURPOSE: To investigate the effect of miR-21 on promoting vascular differentiation of umbilical cord blood derived mesenchymal stem cells (UCBMSCs) in vitro. METHODS: UCBMSCs (from Stem Cell Bank of Tongji University) were cultured; Lenti-LacZ-Luciferase and Lenti-miR-21-Luciferase Lentiviral vector were reconstructed; Real-time fluorescence quantification PCR and Western blot were performed to detect the expression of key angiogenic factors at 0, 1, 4, 7 and 14 d after target gene was transduced into UCBMSCs; UCBMSCs of the third generation were transduced with Lenti-LacZ-Luciferase and Lenti-miR-21- Luciferase; matrigel tube assay was performed to observe the tube-like structure under microscope...
October 2017: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/29307582/igf-1r-promotes-symmetric-self-renewal-and-migration-of-alkaline-phosphatase-germ-stem-cells-through-hif-2%C3%AE-oct4-cxcr4-loop-under%C3%A2-hypoxia
#7
Yung-Che Kuo, Heng-Kien Au, Jue-Liang Hsu, Hsiao-Feng Wang, Chiung-Ju Lee, Syue-Wei Peng, Ssu-Chuan Lai, Yu-Chih Wu, Hong-Nerng Ho, Yen-Hua Huang
Hypoxia cooperates with endocrine signaling to maintain the symmetric self-renewal proliferation and migration of embryonic germline stem cells (GSCs). However, the lack of an appropriate in vitro cell model has dramatically hindered the understanding of the mechanism underlying this cooperation. Here, using a serum-free system, we demonstrated that hypoxia significantly induced the GSC mesenchymal transition, increased the expression levels of the pluripotent transcription factor OCT4 and migration-associated proteins (SDF-1, CXCR4, IGF-1, and IGF-1R), and activated the cellular expression and translocalization of the CXCR4-downstream proteins ARP3/pFAK...
January 3, 2018: Stem Cell Reports
https://www.readbyqxmd.com/read/29300322/mutations-in-emt-related-genes-in-alk-positive-crizotinib-resistant-non-small-cell-lung-cancers
#8
Jiacong Wei, Anthonie J van der Wekken, Ali Saber, Miente M Terpstra, Ed Schuuring, Wim Timens, T Jeroen N Hiltermann, Harry J M Groen, Anke van den Berg, Klaas Kok
Crizotinib is an effective drug for patients with anaplastic lymphoma kinase (ALK)-positive non-small-cell lung cancer (NSCLC), but upon treatment, the tumors inevitably become crizotinib resistant in time. The resistance mechanisms are only partly understood. In this study, we aim to identify gene mutations associated with resistance in ALKpositive advanced non-squamous NSCLC treated with crizotinib. Four ALK positive patients with progressive disease following crizotinib treatment were identified with paired pre- and post-crizotinib tumor tissue from our previously published cohort...
January 4, 2018: Cancers
https://www.readbyqxmd.com/read/29280872/phd-2-suppression-in-mesenchymal-stromal-cells-enhances-wound-healing
#9
Sae Hee Ko, Allison C Nauta, Shane D Morrison, Michael S Hu, Andrew S Zimmermann, Michael T Chung, Jason P Glotzbach, Victor W Wong, Graham G Walmsley, H Peter Lorenz, Denise A Chan, Geoffrey C Gurtner, Amato J Giaccia, Michael T Longaker
BACKGROUND: Cell therapy with mesenchymal stromal cells is a promising strategy for tissue repair. Restoration of blood flow to ischemic tissues is a key step in wound repair, and mesenchymal stromal cells have been shown to be proangiogenic. Angiogenesis is critically regulated by the hypoxia-inducible factor (HIF) superfamily, consisting of transcription factors targeted for degradation by prolyl hydroxylase domain (PHD)-2. The aim of this study was to enhance the proangiogenic capability of mesenchymal stromal cells and to use these modified cells to promote wound healing...
January 2018: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/29277653/microrna-191-regulated-by-hif-2%C3%AE-is-involved-in-emt-and-acquisition-of-a-stem-cell-like-phenotype-in-arsenite-transformed-human-liver-epithelial-cells
#10
Chao Chen, Qianlei Yang, Dapeng Wang, Fei Luo, Xinlu Liu, Junchao Xue, Ping Yang, Hui Xu, Jiachun Lu, Aihua Zhang, Qizhan Liu
Inorganic arsenic is widely distributed in the environment, and epidemiologic data show a strong association between arsenic exposure and risk of liver cancer. An understanding of the mechanisms underlying development of liver cancer and metastasis would be useful in reducing the incidence and mortality of liver cancer. MicroRNAs (miRs) act as regulators in liver cancer. Here, we show that acute or chronic exposure of human liver epithelial L-02 cells to arsenite increased expression of miR-191. There were decreased levels of BASP-1 and E-cadherin and increased levels of WT-1 and N-cadherin, indicating that arsenite induced epithelial-mesenchymal transition (EMT)...
December 22, 2017: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/29251629/hif-1%C3%AE-promotes-autophagic-proteolysis-of-dicer-and-enhances-tumor-metastasis
#11
Hui-Huang Lai, Jie-Ning Li, Ming-Yang Wang, Hsin-Yi Huang, Carlo M Croce, Hui-Lung Sun, Yu-Jhen Lyu, Jui-Wen Kang, Ching-Feng Chiu, Mien-Chie Hung, Hiroshi I Suzuki, Pai-Sheng Chen
HIF-1α, one of the most extensively studied oncogenes, is activated by a variety of microenvironmental factors. The resulting biological effects are thought to depend on its transcriptional activity. The RNAse enzyme Dicer is frequently downregulated in human cancers, which has been functionally linked to enhanced metastatic properties; however, current knowledge of the upstream mechanisms regulating Dicer is limited. In the present study, we identified Dicer as a HIF-1α-interacting protein in multiple types of cancer cell lines and different human tumors...
December 18, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29238372/transplantation-of-rat-mesenchymal-stem-cells-overexpressing-hypoxia-inducible-factor-2%C3%AE-improves-blood-perfusion-and-arteriogenesis-in-a-rat-hindlimb-ischemia-model
#12
Weifeng Lu, Xiaoli Chen, Yi Si, Shichai Hong, Zhengyu Shi, Weiguo Fu
Mesenchymal stem cells (MSCs) have been increasingly tested in cell-based therapy to treat numerous diseases. Genetic modification to improve MSC behavior may enhance posttransplantation outcome. This study aims to test the potential therapeutic benefits of rat bone marrow MSCs overexpressing hypoxia-inducible factor 2α (rMSCsHIF-2α ) in a rat hindlimb ischemia model. PBS, rMSCs, or rMSCsHIF-2α were injected into rat ischemic hindlimb. Compared with the injection of PBS or rMSCs, transplantation of rMSCsHIF-2α significantly improved blood perfusion, increased the number of vessel branches in the muscle of the ischemic hindlimb, and improved the foot mobility of the ischemic hindlimb (all P < 0...
2017: Stem Cells International
https://www.readbyqxmd.com/read/29237157/hypoxia-accelerates-aggressiveness-of-hepatocellular-carcinoma-cells-involving-oxidative-stress-epithelial-mesenchymal-transition-and-non-canonical-hedgehog-signaling
#13
Zhikui Liu, Kangsheng Tu, Yufeng Wang, Bowen Yao, Qing Li, Liang Wang, Changwei Dou, Qingguang Liu, Xin Zheng
BACKGROUND/AIMS: Hypoxic microenvironment, a common feature of hepatocellular carcinoma (HCC), can induce HIF-1α expression and promote the epithelial-mesenchymal transition (EMT) and invasion of cancer cells. However, the underlying molecular mechanisms have not fully elucidated. METHODS: HCC cells were cultured under controlled hypoxia conditions or normoxic conditions. Transwell assays were used to examine the migration and invasion capacity. HIF-1α siRNA, cyclopamine (a SMO antagonist) and GLI1 siRNA were used to inhibit HIF-1α transcription or Hh signaling activation...
December 11, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29207631/tetrahydrocurcumin-induces-mesenchymal-epithelial-transition-and-suppresses-angiogenesis-by-targeting-hif-1%C3%AE-and-autophagy-in-human-osteosarcoma
#14
Yan Zhang, Ying Liu, Jilong Zou, Lixin Yan, Wei Du, Yafeng Zhang, Hanliang Sun, Peng Lu, Shuo Geng, Rui Gu, Hongyue Zhang, Zhenggang Bi
Human osteosarcoma is considered a malignant tumor with poor prognosis that readily metastasizes. Tetrahydrocurcumin (THC) has been reported to have anti-tumor activity in numerous tumors. In addition, hypoxia-inducible factor-1α (HIF-1α) has been demonstrated to be associated with tumor metastasis by regulating epithelial-mesenchymal transition (EMT). However, the role of THC in osteosarcoma remains uncertain. Therefore, this study aimed to elucidate the potential mechanisms. We found that THC significantly reduced the growth of osteosarcoma cells and suppressed migration and invasion, as tested in a nude mouse lung metastasis model...
October 31, 2017: Oncotarget
https://www.readbyqxmd.com/read/29191809/molecular-fingerprint-for-terminal-abdominal-aortic-aneurysm-disease
#15
Gabor Gäbel, Bernd H Northoff, Irina Weinzierl, Stefan Ludwig, Irene Hinterseher, Wolfgang Wilfert, Daniel Teupser, Stefan A Doderer, Hendrik Bergert, Frank Schönleben, Jan H N Lindeman, Lesca M Holdt
BACKGROUND: Clinical decision making in abdominal aortic aneurysms (AAA) relies completely on diameter. At this point, improved decision tools remain an unmet medical need. Our goal was to identify changes at the molecular level specifically leading up to AAA rupture. METHODS AND RESULTS: Aortic wall tissue specimens were collected during open elective (eAAA; n=31) or emergency repair of ruptured AAA (rAAA; n=17), and gene expression was investigated using microarrays...
November 30, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29183009/hypoxia-induced-mesenchymal-stromal-cells-exhibit-an-enhanced-therapeutic-effect-on-radiation-induced-lung-injury-in-mice-due-to-an-increased-proliferation-potential-and-enhanced-antioxidant-ability
#16
Bailong Li, Cheng Li, Mo Zhu, Youjun Zhang, Jicong Du, Yang Xu, Bin Liu, Fu Gao, Hu Liu, Jianming Cai, Yanyong Yang
BACKGROUND/AIMS: Radiation therapy is an important treatment for thoracic cancer; however, side effects accompanied with radiotherapy lead to limited tumor control and a decline in patient quality of life. Among these side effects, radiation-induced lung injury (RILI) is the most serious and common. Hence, an effective remedy for RILI is needed. Mesenchymal stromal cells (MSCs) are multipotent adult stem cells that have been demonstrated to be an effective treatment in some disease caused by tissue damage...
November 29, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29171040/hif-1%C3%AE-il-1%C3%AE-signaling-enhances-hepatoma-epithelial-mesenchymal-transition-via-macrophages-in-a-hypoxic-inflammatory-microenvironment
#17
Jingying Zhang, Qi Zhang, Yu Lou, Qihan Fu, Qi Chen, Tao Wei, Jiaqi Yang, Jinlong Tang, Jianxin Wang, Yiwen Chen, Xiaoyu Zhang, Jian Zhang, Xueli Bai, Tingbo Liang
The development and progression of hepatocellular carcinoma (HCC) is dependent on its local microenvironment. Hypoxia and inflammation are two critical factors that shape the HCC microenvironment; however, the interplay between the two factors and the involvement of cancer cells under such conditions remain poorly understood. We found that tumor-associated macrophages (TAMs), the primary pro-inflammatory cells within tumors, secreted more interleukin (IL)-1β under moderate hypoxic conditions due to increased stability of hypoxia inducible factor (HIF)-1α...
November 23, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/29171033/actin-cytoskeleton-remodeling-drives-epithelial-mesenchymal-transition-for-hepatoma-invasion-and-metastasis
#18
Jei-Ming Peng, Rabindranath Bera, Chih-Yung Chiou, Ming-Chin Yu, Tse-Chin Chen, Chia-Wei Chen, Tsung-Rui Wang, Wan-Ling Chiang, Yongkun Wei, Huamin Wang, Mien-Chie Hung, Sen-Yung Hsieh
High invasiveness is a hallmark of human hepatocellular carcinoma (HCC). Large tumors predict invasion and metastasis. Epithelial-mesenchymal transition (EMT) is crucial for cancer invasion and metastasis. However, the mechanisms whereby large tumors tend to undergo EMT remain unclear. We conducted a subgenome-wide screen and identified KLHL23 as an HCC invasion suppressor via inhibiting EMT. KLHL23 binds to actin and suppresses actin polymerization. KLHL23 silencing induced filopodium and lamellipodium formation...
November 23, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/29167125/mesenchymal-stem-cells-reduce-hypoxia-induced-apoptosis-in-alveolar-epithelial-cells-by-modulating-hif-and-ros-hypoxic-signalings
#19
Olivier Bernard, Florence Jeny, Yurdagul Uzunhan, Elisabetta Dondi, Rahma Terfous, Rabab Label, Angela Sutton, Jérôme Larghero, Valérie Vanneaux, Hilario Nunes, Emilie Boncoeur, Carole Planès, Nicolas Dard
Distal lung diseases such as pulmonary fibrosis or acute lung injury are commonly associated with local alveolar hypoxia that may be deleterious through the stimulation of alveolar epithelial cell (AEC) apoptosis. In various murine models of alveolar injury, administration of allogenic human mesenchymal stem cells (hMSC) exerts an overall protective paracrine effect limiting lung inflammation and fibrosis. However, the precise mechanisms on lung cells themselves remain poorly understood. Here we investigated whether hMSC conditioned medium (hMSC-CM) would protect AECs from hypoxia-induced apoptosis and the mechanisms involved in this cytoprotective effect...
November 22, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/29158549/hypoxia-inducible-factor-1%C3%AE-mediates-the-profibrotic-effect-of-albumin-in-renal-tubular-cells
#20
Junping Hu, Weili Wang, Fan Zhang, Pin-Lan Li, Krishna M Boini, Fan Yi, Ningjun Li
Proteinuria is closely associated with the progression of chronic kidney diseases (CKD) by producing renal tubulointerstitial fibrosis. Over-activation of hypoxia inducible factor (HIF)-1α has been implicated in the progression of CKD. The present study tested the hypothesis that HIF-1α mediates albumin-induced profibrotic effect in cultured renal proximal tubular cells. Incubation of the cells with albumin (40 μg/ml) for 72 hrs significantly increased the protein levels of HIF-1α, tissue inhibitor of metalloproteinase (TIMP)-1 and collagen-I, which were blocked by HIF-1α shRNA...
November 20, 2017: Scientific Reports
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