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https://www.readbyqxmd.com/read/29054966/wnt5a-promotes-epithelial-to-mesenchymal-transition-and-metastasis-in-non-small-cell-lung-cancer
#1
Biao Wang, Zhen Tang, Huiyuan Gong, Li Zhu, Xuegang Liu
A recent study indicated that high Wnt5a expression is associated with poor prognosis in NSCLC patients, however, the underlying mechanism was not clear yet. Immunohistochemistry and Western blotting was performed to examine the protein expression level in NSCLC tissues and cell lines. The role of Wnt5a in clone formation, invasiveness, migration and epithelial-to-mesenchymal transition (EMT) of NSCLC cells were studied. Luciferase reporter assay was used to evaluate the Tcf/Lef transcriptional activity. For assessing the effects of Wnt5a on tumor growth and metastasis in vivo , A549 cells transfected with sh-Wnt5a were subcutaneously or orthotopically injected into nude mice...
October 20, 2017: Bioscience Reports
https://www.readbyqxmd.com/read/29054489/msi2-plays-a-carcinogenic-role-in-esophageal-squamous-cell-carcinoma-via-regulation-of-the-wnt-%C3%AE-catenin-and-hedgehog-signaling-pathways
#2
Zhiwei Li, Hui Jin, Guozhang Mao, Liuguang Wu, Qingwei Guo
Msi2 has been widely reported to be upregulated and strongly associated with fast progress and poor prognosis in many cancers. However, the expression and role of Msi2 in esophageal squamous cell carcinoma (ESCC) remain unknown. In this study, we found that Msi2 was upregulated in ESCC clinical samples, and was significantly associated with tumor size, differentiation status, and lymph node metastasis in ESCC patients. Multivariate Cox regression analysis showed that Msi2 was an independent predictor for disease-free survival (DFS) and overall survival (OS)...
October 17, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/29054455/dadle-enhances-viability-and-anti-inflammatory-effect-of-human-mscs-subjected-to-serum-free-apoptotic-condition-in-part-via-the-dor-pi3k-akt-pathway
#3
L Vinod Kumar Reddy, Dwaipayan Sen
AIM: Nutritional deprivation and inflammation-rich zones are the major causative reasons for poor survivability of transplanted mesenchymal stem cells (MSCs). Therefore in the present study, we demonstrated the cytoprotective and anti-inflammatory effects of activated delta (δ)-opioid receptor (DOR) with synthetic peptide [D-Ala(2), D-Leu(5)]-enkephalin (DADLE) treatment on human MSCs cultured in serum-starved condition. MAIN METHODS: Cell viability was measured using MTT and Annexin V/PI assays...
October 17, 2017: Life Sciences
https://www.readbyqxmd.com/read/29054408/hdac6-deficiency-induces-apoptosis-in-mesenchymal-stem-cells-through-p53-k120-acetylation
#4
Song-Yi Park, Sophors Phorl, Suna Jung, Korm Sovannarith, Se-In Lee, Solhee Noh, Miae Han, Rema Naskar, Jae-Young Kim, Yun-Jaie Choi, Joo-Yong Lee
The acetylation of p53 is critical in modulating its pro-apoptotic roles. However, its regulatory mechanism and physiological significance are unclear. Here, we show HDAC6 negatively regulates pro-apoptotic acetylation of p53 at lysine residue 120 (K120) in mesenchymal stem cells (MSCs). The loss of HDAC6 expression in MSCs increases K120 acetylation of p53, which is successfully reversed by the wild type but not by catalytically dead HDAC6. Deletion of HDAC6 induces caspase-dependent apoptosis by promoting transactivation of Bax and suppression of Bcl-2...
October 17, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29054337/dental-pulp-stem-cells-dpscs-increase-prostate-cancer-cell-proliferation-and-migration-under-in-vitro-conditions
#5
Ayşegül Doğan, Selami Demirci, Hüseyin Apdik, Ezgi Avşar Apdik, Fikrettin Şahin
Cancer as a multistep and complicated disease is regulated by several molecular and cellular events. Cancer treatment could be managed at the early stages when the tumor is confined in the tissue. However, disseminated cancer cells metastasize to other body parts and generate new tumors resulting in mortality. Mesenchymal stem cells (MSCs) are found in different body parts and helps adult tissue regeneration. The role of MSCs in cancer progression has emerged as one of the important aspects in cancer biology and is the aim of interest in recent years...
October 16, 2017: Tissue & Cell
https://www.readbyqxmd.com/read/29054137/il-35-gene-modified-mesenchymal-stem-cells-protect-the-con-a-induced-fulminant-hepatitis-through-decreasing-the-ifn-g-level
#6
Wei Wang, Hao Guo, Hongyue Li, Yongjia Yan, Chao Wu, Xiaodong Wang, Xianghui He, Na Zhao
Interleukin 35 (IL-35) is a relatively newly identified cytokine required for the regulatory and suppressive functions of regulatory T cells(Treg), playing an important role in the prevention of autoimmune diseases. In this study, we used the MSCs as the gene-delivery vehicles for IL-35 gene therapy and investigated their protective effects in Con A-induced autoimmune hepatitis. Results showed that IL-35 gene modified MSCs(IL-35-MSCs) can specifically migrate to the injured liver tissues and significantly narrow the necrosis areas and reduce the hepatocytes apoptosis...
October 20, 2017: Human Gene Therapy
https://www.readbyqxmd.com/read/29054136/combined-methylome-and-transcriptome-analysis-during-rat-hepatic-stellate-cell-activation
#7
Eva Schumacher, Silke Götze, Claus Kordes, Vladimir Benes, Dieter Häussinger
Hepatic stellate cells (HSC) are mesenchymal stem cells (MSC) of the liver. They are unique among MSC, since HSC remain in a quiescent, retinoid-storing state in the normal liver but become activated after liver injury and contribute to tissue repair. The epigenetic mechanisms accompanying the transition of HSC from a quiescent to an activated state are in the focus of the present study. We investigated the methylome and transcriptome during this process and observed profound changes. While the promoter methylation correlated negatively with gene expression, the gene body methylation revealed no clear correlation...
October 20, 2017: Stem Cells and Development
https://www.readbyqxmd.com/read/29054134/thymus-derived-mesenchymal-stem-cells-for-tissue-engineering-clinical-grade-cardiovascular-grafts
#8
Dominga Iacobazzi, Megan Swim, Ambra Albertario, Massimo Caputo, Mohamed T Ghorbel
Mesenchymal stem cells (MSCs) are attractive tools for regenerative medicine because of their multi-differentiation potential and immunomodulation capacity. In congenital heart defect surgical correction, replacement grafts lacking growth potential are commonly used. Tissue engineering promises to overcome the limitations of these grafts. In this study, we hypothesized that human thymus derived MSCs are a suitable tool to tissue engineer a living vascular graft with good integration and patency once implanted in vivo...
October 20, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/29053991/molecular-mechanisms-of-development-of-the-human-fetal-female-reproductive-tract
#9
Gerald R Cunha, Takeshi Kurita, Mei Cao, Joel Shen, Stanley Robboy, Laurence Baskin
Human female reproductive tract development rests mostly upon hematoxilyn and eosin stained sections despite recent advances on molecular mechanisms in mouse studies. We report application of immunohistochemical methods to explore the ontogeny of epithelial and mesenchymal differentiation markers (keratins, homobox proteins, steroid receptors), transcription factors and signaling molecules (TP63 and RUNX1) during human female reproductive tract development. Keratins 6, 7, 8, 10, 14 and 19 (KRT6, KRT7, KRT8, KRT10, KRT14, KRT19) were expressed in a temporally and spatially dynamic fashion...
July 29, 2017: Differentiation; Research in Biological Diversity
https://www.readbyqxmd.com/read/29053925/mesenchymal-stem-cell-secretome-improves-tendon-cell-viability-in-vitro-and-tendon-bone-healing-in-vivo-when-a-tissue-engineering-strategy-is-used-in-a-rat-model-of-chronic-massive-rotator-cuff-tear
#10
Nuno Sevivas, Fábio Gabriel Teixeira, Raquel Portugal, Bruno Direito-Santos, João Espregueira-Mendes, Filipe J Oliveira, Rui F Silva, Nuno Sousa, Wan Ting Sow, Nguyen Luong, Kee Woei Ng, António J Salgado
BACKGROUND: Massive rotator cuff tears (MRCTs) represent a major clinical concern, especially when degeneration and chronicity are involved, which highly compromise healing capacity. PURPOSE: To study the effect of the secretome of mesenchymal stem cells (MSCs) on tendon cells (TCs) followed by the combination of these activated TCs with an electrospun keratin-based scaffold to develop a tissue engineering strategy to improve tendon-bone interface (TBi) healing in a chronic MRCT rat model...
October 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29053779/cell-based-therapeutic-strategies-for-multiple-sclerosis
#11
Neil J Scolding, Marcelo Pasquini, Stephen C Reingold, Jeffrey A Cohen
The availability of multiple disease-modifying medications with regulatory approval to treat multiple sclerosis illustrates the substantial progress made in therapy of the disease. However, all are only partially effective in preventing inflammatory tissue damage in the central nervous system and none directly promotes repair. Cell-based therapies, including immunoablation followed by autologous haematopoietic stem cell transplantation, mesenchymal and related stem cell transplantation, pharmacologic manipulation of endogenous stem cells to enhance their reparative capabilities, and transplantation of oligodendrocyte progenitor cells, have generated substantial interest as novel therapeutic strategies for immune modulation, neuroprotection, or repair of the damaged central nervous system in multiple sclerosis...
July 21, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/29053693/in-vivo-tracking-of-human-adipose-derived-mesenchymal-stem-cells-in-a-rat-knee-osteoarthritis-model-with-fluorescent-lipophilic-membrane-dye
#12
Meng Li, Ming Hao, Dong Jiang, Yanxi Chen, Wen Wang
In order to support the clinical application of human adipose-derived mesenchymal stem cell (haMSC) therapy for knee osteoarthritis (KOA), we examined the efficacy of cell persistence and biodistribution of haMSCs in animal models. We demonstrated a method to label the cell membrane of haMSCs with lipophilic fluorescent dye. Subsequently, intra-articular injection of the labeled cells in rats with surgically induced KOA was monitored dynamically by an in vivo imaging system. We employed the lipophilic carbocyanines DiD (DilC18 (5)), a far-red fluorescent Dil (dialkylcarbocyanines) analog, which utilized a red laser to avoid excitation of the natural green autofluorescence from surrounding tissues...
October 8, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29053518/role-of-homeodomain-interacting-protein-kinase-2-in-the-pathogenesis-of-tissue-fibrosis-in-keloid-derived-keratinocytes
#13
Yi-Xuan Zhao, Guo-You Zhang, An-Yuan Wang, Ya-Hong Chen, Da-Mu Lin, Qing-Feng Li
Epithelial-mesenchymal transition (EMT) plays a critical role in fibrotic keloid formation, which is characterized by excessive collagen and extracellular matrix synthesis and deposition. Growing evidence suggests that the serine/threonine kinase homeodomain-interacting protein kinase 2 (HIPK2) acts upstream of several major fibrosis signaling pathways; however, the role of HIPK2 in the keloid fibrogenesis remains unknown. In the current study, we investigated the roles of HIPK2 in the pathogenesis of keloids...
October 19, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/29053398/the-involvement-of-lncrnas-in-the-development-and-progression-of-pancreatic-cancer
#14
Li Duguang, He Jin, Qian Xiaowei, Xu Peng, Wang Xiaodong, Li Zhennan, Qian Jianjun, Yao Jie
Pancreatic cancer is one of the most malignant tumors that are difficult to diagnose at its early stage and there is no effective therapy. Recent studies uncovered that many non-protein-coding RNAs including the class of long noncoding RNAs (lncRNAs) are differentially expressed in various types of tumors and they are potent regulators of tumor progression and metastasis. LncRNA can mediate tumor initiation, proliferation, migration and metastasis through modulating epigenetic modification, alternative splicing, transcription, and protein translation...
October 20, 2017: Cancer Biology & Therapy
https://www.readbyqxmd.com/read/29053396/embryonic-stem-cell-secreted-factors-decrease-invasiveness-of-triple-negative-breast-cancer-cells-through-regulome-modulation
#15
Elizabeth Tarasewicz, Robert S Oakes, Misael O Aviles, Joelle Straehla, Kathryn M Chilton, Joseph T Decker, Jia Wu, Lonnie D Shea, Jacqueline S Jeruss
Stem cell microenvironments decrease the invasiveness of cancer cells, and elucidating the mechanisms associated with disease regression could further the development of targeted therapies for aggressive cancer subtypes. To this end, we applied an emerging technology, TRanscriptional Activity CEll aRray (TRACER), to investigate the reprogramming of triple-negative breast cancer (TNBC) cells in conditions that promoted a less aggressive phenotype. The repressive environment was established through exposure to mouse embryonic stem cell conditioned media (mESC CM)...
October 20, 2017: Cancer Biology & Therapy
https://www.readbyqxmd.com/read/29053389/mrpl53-a-new-candidate-gene-for-orofacial-clefting-identified-using-an-eqtl-approach
#16
C Masotti, L A Brito, A C Nica, K U Ludwig, K Nunes, C P Savastano, C Malcher, S G Ferreira, G S Kobayashi, D F Bueno, N Alonso, D Franco, A Rojas-Martinez, S E Dos Santos, P A Galante, D Meyer, T Hünemeier, E Mangold, E T Dermitzakis, M R Passos-Bueno
A valuable approach to understand how individual and population genetic differences can predispose to disease is to assess the impact of genetic variants on cellular functions (e.g., gene expression) of cell and tissue types related to pathological states. To understand the genetic basis of nonsyndromic cleft lip with or without cleft palate (NSCL/P) susceptibility, a complex and highly prevalent congenital malformation, we searched for genetic variants with a regulatory role in a disease-related tissue, the lip muscle (orbicularis oris muscle [OOM]), of affected individuals...
October 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/29053388/some-chemotherapeutics-treated-colon-cancer-cells-display-a-specific-phenotype-being-a-combination-of-stem-like-and-senescent-cell-features
#17
H Was, J Czarnecka, A Kowalczyk, K Barszcz, T Bernas, K Piwocka, B Kaminska
Colorectal cancer (CRC) is the second leading cause of death among cancer patients in the Northern countries. CRC can reappear a long time after treatment. Recent clinical studies demonstrated that, in response to chemotherapy, cancer cells may undergo stress-induced premature senescence (SIPS), which typically results in growth arrest. Nonetheless, these senescent cells were reported to divide in an atypical manner and thus contribute to cancer re-growth. Therefore, we examined if SIPS escape may follow treatment with chemotherapeutics used clinically: 5-fluorouracil (5-FU), oxaliplatin (OXA) and irinotecan (IRINO)...
October 20, 2017: Cancer Biology & Therapy
https://www.readbyqxmd.com/read/29053065/investigation-of-the-role-of-alginate-containing-high-guluronic-acid-on-osteogenic-differentiation-capacity-of-human-umbilical-cord-wharton-s-jelly-mesenchymal-stem-cells
#18
Darioush Bijan Nejad, Saeed Azandeh, Rezvan Habibi, Vahid Bayati, Kambiz Ahmadi Angali
BACKGROUND AND AIM: Cell encapsulation using biodegradable material has promising results for tissue engineering. Since pressure is an effective factor on stem cell behavior and various concentrations of alginate create different pressures on the cells, therefore our goal was to evaluate the mechanical effect of 1/2% (w/v) and 1/8%(w/v) alginate containing high guluronic acid on viability and osteogenic capacity of HUCWJ cells. METHODS: Cell viability was evaluated by MTT assay after 1, 7 and 14 days...
October 20, 2017: Journal of Microencapsulation
https://www.readbyqxmd.com/read/29052798/curcumin-pretreatment-prevents-hydrogen-peroxide-induced-oxidative-stress-through-enhanced-mitochondrial-function-and-deactivation-of-akt-erk-signaling-pathways-in-rat-bone-marrow-mesenchymal-stem-cells
#19
Xujie Wang, Jianxin Gao, Yunchuan Wang, Bin Zhao, Yijie Zhang, Fu Han, Zhao Zheng, Dahai Hu
Bone marrow mesenchymal stem cells (BMSCs)-based therapy has emerged as a desirable modality for the treatment of tissue injury with promising therapeutic effects; however, low survival rate of transplanted cells due to harsh microenvironment with hypoxia and oxidative stress results in hampered therapeutic benefits of this therapy. Curcumin, a natural bioactive product, is a dietary component which has gained increasing attention owing to its beneficial health properties. Here, we reported the protective effects of curcumin pretreatment on BMSCs injury induced by hydrogen peroxide (H2O2), which was used as ROS source of oxidative stress in vitro...
October 20, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/29052357/critical-sized-full-thickness-skin-defect-regeneration-using-ovine-small-intestinal-submucosa-with-or-without-mesenchymal-stem-cells-in-rat-model
#20
Morteza Rashtbar, Jamshid Hadjati, Jafar Ai, Sadegh Shirian, Issa Jahanzad, Mahmoud Azami, Shiva Asadpuor, Esmaeil Sadroddiny
Decellularized extracellular matrices (ECM) based materials are routinely used for a variety of clinical applications. Hereof, in vivo application of decellularized ovine small intestinal submucosal (DOSIS) layer as, a scaffold is yet to be investigated. In this study, the effectiveness of the DOSIS scaffold, with or without rat bone marrow mesenchymal stem cells (BM-MSCs), in full-thickness wound healing of critical-sized defect was experimentally studied in a rat model. The experimental groups included; group I (control), group II (DOSIS), and group III (BM-MSCs-seeded DOSIS)...
October 20, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
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