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https://www.readbyqxmd.com/read/29656561/advances-in-controlling-differentiation-of-adult-stem-cells-for-peripheral-nerve-regeneration
#1
REVIEW
Metin Uz, Suprem R Das, Shaowei Ding, Donald S Sakaguchi, Jonathan C Claussen, Surya K Mallapragada
Adult stems cells, possessing the ability to grow, migrate, proliferate, and transdifferentiate into various specific phenotypes, constitute a great asset for peripheral nerve regeneration. Adult stem cells' ability to undergo transdifferentiation is sensitive to various cell-to-cell interactions and external stimuli involving interactions with physical, mechanical, and chemical cues within their microenvironment. Various studies have employed different techniques for transdifferentiating adult stem cells from distinct sources into specific lineages (e...
April 14, 2018: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/29656479/fiber-length-and-concentration-synergistic-effect-on-mechanical-and-cellular-response-in-wet-laid-poly-lactic-acid-fibrous-scaffolds
#2
Andrew T Wood, Dominique Everett, Sanjay Kumar, Manoj K Mishra, Vinoy Thomas
In the area of biomaterials, fibers not only offer increased mechanical response, but also serve as an extracellular matrix mimicking morphology to direct cellular attachment and proliferation. While biologically similar in morphology, soft, and flexible hydrogel materials have low mechanical properties. For applications in tissue engineering, the lack of directional cues and attachment regions within the biogels is undesired as cells require a guide for adequate attachment and organized proliferation. In this work, we have investigated the role of poly(lactic acid) (PLA) fiber length and concentration as a reinforcement phase in a gelatin hydrogel matrix and the resultant mechanical and cellular responses...
April 15, 2018: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/29656185/exogenous-serp1-attenuates-restenosis-by-restoring-glp-1-receptor-activity-in-diabetic-rats-following-vascular-injury
#3
Lishuai Feng, Jianbo Wang, Xu Ma
The activity of glucagon-like peptide 1 (GLP-1R) is essential for preventing restenosis following vascular injury; however, the mechanism of dysfunctional GLP-1R glycosylation and ways to enhance the activity of GLP-1R on vascular surfaces in diabetic patients are poorly understood. In the present study, we investigated the N-glycosylation level and role of stress-associated endoplasmic reticulum protein 1 (SERP1) in preventing restenosis following carotid injury in diabetic rats. Our results showed that N-glycosylation levels in both rat aortic endothelial cells (RAOECs) and rat vascular smooth muscle cells (VSMCs) decreased gradually following glucose treatment in a concentration dependant manner...
April 12, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29656183/hispidulin-inhibits-hepatocellular-carcinoma-growth-and-metastasis-through-ampk-and-erk-signaling-mediated-activation-of-ppar%C3%AE
#4
Mei Han, Hui Gao, Ping Ju, Ming-Quan Gao, Yin-Ping Yuan, Xue-Hong Chen, Kai-Li Liu, Yan-Tao Han, Zhi-Wu Han
Hispidulin, a phenolic flavonoid, exerts potent cytotoxicity towards a variety of human cancers. However, the effects of hispidulin on hepatocellular carcinoma (HCC) and underlying molecular mechanisms of its action remain elusive. The present study investigated the effect of hispidulin on HCC in experimental models, including tumor cell lines and mouse tumor xenograft. Results demonstrated that hispidulin was cytotoxic and anti-proliferative to HCC cell lines (SMMC7721 and Bel7402). Hispidulin activated caspase-3 and triggered apoptosis in HCC cells...
April 12, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29656117/baicalin-modulates-the-treg-teff-balance-to-alleviate-uveitis-by-activating-the-aryl-hydrocarbon-receptor
#5
Wenjie Zhu, Xiaoqing Chen, Jianfeng Yu, Yichen Xiao, Yingqi Li, Shangtao Wan, Wenru Su, Dan Liang
Autoimmune uveitis is a sight-threatening ocular inflammatory disorder. Immunological inflammation is regarded as the key to pathogenesis in autoimmune uveitis. Baicalin, the major bioactive component of Scutellaria baicalensis, possesses immunomodulatory properties. However, the role of baicalin in uveitis and its underlying mechanisms remain unclear. In the current study, we found that baicalin treatment obviously inhibited the intraocular inflammatory process in mice with experimental autoimmune uveitis, along with clear declines in infiltrated inflammatory cells and inflammatory cytokine transcription in the retina and draining lymph nodes...
April 12, 2018: Biochemical Pharmacology
https://www.readbyqxmd.com/read/29655853/total-saponins-of-albiziae-cortex-show-anti-hepatoma-carcinoma-effects-by-inducing-s-phase-arrest-and-mitochondrial-apoptosis-pathway-activation
#6
Yi Qian, Qing-Hua Han, Li-Chao Wang, Qiang Guo, Xu-Da Wang, Peng-Fei Tu, Ke-Wu Zeng, Hong Liang
ETHNOPHARMACOLOGICAL RELEVANCE: Albiziae Cortex (AC) is a widely used traditional medicine in China. It is possess various properties to treat insomnia, traumatic injuries, diuresis, sthenia, and confusion. Total saponins of Albiziae Cortex (TSAC) are the most abundant bioactive components of AC, which were reported to show significant anti-tumor effects in vivo and in vitro. But the underlying mechanism of TSAC remained to be revealed. AIM OF STUDY: In this study, we investigated the anti- hepatoma carcinoma effects and the potential mechanism of TSAC in vivo and in vitro...
April 12, 2018: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29655784/aristolochic-acid-i-interferes-with-the-expression-of-blcap-tumor-suppressor-gene-in-human-cells
#7
Ying-Tzu Huang, Ting-Shuan Wu, Chuan-Chen Lu, Feng-Yih Yu, Biing-Hui Liu
Aristolochic acid I (AAI) is a phytocompound that is linked to the progressive renal disease and development of human urothelial carcinoma. The bladder cancer-associated protein (BLCAP) gene exhibits a tumor suppressor function in various tumors, including bladder carcinoma. This study evaluated the effect of AAI on BLCAP expression and its associated mechanism in human cells. Administering AAI to human embryonic kidney cells (HEK293), human proximal tubule epithelial cells (HK-2) and urinary bladder cancer cells (HT-1376) significantly reduced the expression of BLCAP mRNA and protein...
April 12, 2018: Toxicology Letters
https://www.readbyqxmd.com/read/29655694/tatanan-a-from-the-acorus-calamus-l-root-inhibited-dengue-virus-proliferation-and-infections
#8
Xingang Yao, Yun Ling, Songxin Guo, Wenyu Wu, Shijun He, Qing Zhang, Min Zou, Kutty Selva Nandakumar, Xiaoguang Chen, Shuwen Liu
BACKGROUND: Acorus calamus l. (Acoraceae) is a well-known traditional Chinese medicinal plant, whose root are historically mainly used to treat neurodegenerative diseases, and for cholera treatment. This datum strongly indicates the antimicrobial activity of A. calamus. PURPOSE: Our goal is to find the active constituents of A. calamus to treat dengue virus (DENV) infections, and to study the effects and mechanisms of these active substances. METHODS: The root of A...
March 15, 2018: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/29655686/physakengose-g-induces-apoptosis-via-egfr-mtor-signaling-and-inhibits-autophagic-flux-in-human-osteosarcoma-cells
#9
Hua Lin, Chao Zhang, Hao Zhang, Yuan-Zheng Xia, Chuan-Yang Zhang, Jie Luo, Lei Yang, Ling-Yi Kong
BACKGROUND: Physakengose G (PG) is a new compound first isolated from Physalis alkekengi var. franchetii, an anticarcinogenic traditional Chinese medicine. PG has shown promising anti-tumor effects, but its underlying mechanisms remain unknown. PURPOSE: To investigate the anti-cancer effects of PG on human osteosarcoma cells and the underlying mechanisms. METHODS: Cell viability was measured by MTT assay. Apoptosis rates, mitochondrial membrane potential (MMP), reactive oxygen species (ROS) generation, and acidic vesicular organelles (AVOs) formation were determined by flow cytometry...
March 15, 2018: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/29655682/pristimerin-a-naturally-occurring-triterpenoid-attenuates-tumorigenesis-in-experimental-colitis-associated-colon-cancer
#10
Ju-Hyung Park, Jin-Kyung Kim
BACKGROUND: Pristimerin is a quinonemethide triterpenoid with anti-cancer, anti-angiogenic, anti-inflammatory and anti-protozoal activity. However, the therapeutic role of pristimerin in colitis-associated colorectal carcinogenesis is unknown. PURPOSE: We sought to examine the therapeutic effects of pristimerin on colitis-associated colon cancer induced in mice using azoxymethane (AOM)/dextran sulfate sodium (DSS). The goal was to identify the potential mechanism of action underlying the pharmacological activity of pristimerin...
March 15, 2018: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/29655679/the-extract-of-polygoni-cuspidati-rhizoma-et-radix-suppresses-the-vascular-endothelial-growth-factor-induced-angiogenesis
#11
Wei-Hui Hu, Gallant Kar-Lun Chan, Jian-Shu Lou, Qi-Yun Wu, Huai-You Wang, Ran Duan, Michael Yu-Tung Cheng, Tina Ting-Xia Dong, Karl Wah-Keung Tsim
BACKGROUND: Polygoni Cuspidati Rhizoma et Radix (PCRR; the root and rhizome of Polygonum cuspidatum Sieb. et Zucc) is a traditional Chinese medicine for the treatment of inflammation, hyperlipemia, favus, jaundice and scald. HYPOTHESIS/PURPOSE: The extract of PCRR inhibits vascular endothelial growth factor (VEGF)-induced angiogenesis. The hypothesis is supported by analysis of PCRR extract and investigation of pharmacological role and signaling mechanism of PCRR extract in regulating angiogenic responses...
March 15, 2018: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/29655550/proteomic-investigating-the-cooperative-lethal-effect-of-egfr-and-mdm2-inhibitors-on-ovarian-carcinoma
#12
Shing-Jyh Chang, En-Chi Liao, Hsin-Yueh Yeo, Wen-Hong Kuo, Hsin-Yi Chen, Yi-Ting Tsai, Yu-Shan Wei, Ying-Jen Chen, Yi-Shiuan Wang, Ji-Min Li, Chuan-Chi Shih, Chia-Hao Chan, Hsiu-Chuan Chou, Yung-Jen Chuang, Hong-Lin Chan
With the concept of precision medicine, combining multiple molecular-targeting therapies has brought new approaches to current cancer treatments. Malfunction of the tumor suppressor protein, p53 is a universal hallmark in human cancers. Under normal conditions, p53 is degraded through an ubiquitin-proteosome pathway regulated by its negative regulator, MDM2. In contrast, cellular stress such as DNA damage will activate p53 to carry out DNA repair, cell cycle arrest, and apoptosis. In this study, we focused on ovarian carcinoma with high EGFR and MDM2 overexpression rate...
April 12, 2018: Archives of Biochemistry and Biophysics
https://www.readbyqxmd.com/read/29653367/upregulation-of-lncrna-plncrna-1-indicates-the-poor-prognosis-and-promotes-glioma-progression-by-activation-of-notch-signal-pathway
#13
Xiaolong Wang, Yungang Yan, Chunman Zhang, Wei Wei, Xin Ai, Yongbin Pang, Ying Bian
Prostate cancer-up-regulated long noncoding RNA 1(PlncRNA-1) has been demonstrated to be increased in several cancers, which plays an oncogenic role in the development of cancer. However, the exact functions and molecular mechanism of PlncRNA-1 in the tumorigenesis of glioma has not been studied. In present work, we firstly identified that PlncRNA-1 expression levels were prominently augmented in glioma patient tissues and glioma cell lines compared with adjacent noncancerous tissue and normal cells, respectively...
April 10, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29653362/the-long-noncoding-rna-zfas1-facilitates-bladder-cancer-tumorigenesis-by-sponging-mir-329
#14
Jin-Shan Wang, Qing-Hong Liu, Xiao-Hua Cheng, Wen-Yuan Zhang, Yong-Chao Jin
The incidence and mortality rate of bladder cancer have dramatically expanded, so it's urgent to discover new biomarker and therapeutic target for bladder cancer. Recently, lncRNA has been identified as oncogene or tumor suppressor to regulate the tumorigenesis. LncRNA ZFAS1 has been confirmed as oncogene in various tumors. However, the expression, function, and underlying mechanism of ZFAS1 in bladder carcinogenesis have yet to be totally clarified. In the current study, our data demonstrated that ZFAS1 expression was significantly upregulated in bladder cancer tissues and cell lines...
April 10, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29653160/a-computational-model-for-the-joint-onset-and-development
#15
Kalenia M Márquez-Flórez, James R Monaghan, Sandra J Shefelbine, Angélica Ramirez-Martínez, Diego A Garzón-Alvarado
Joints connect the skeletal components and enable movement. The appearance and development of articulations is due to different genetic, biochemical, and mechanical factors. In the embryonic stage, controlled biochemical processes are critical for organized growth. We developed a computational model, which predicts the appearance, location, and development of joints in the embryonic stage. Biochemical events are modeled with reaction diffusion equations with generic molecules representing molecules that 1) determine the site where the articulation will appear, 2) promote proliferation, and matrix synthesis, and 3) define articular cartilage...
April 10, 2018: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/29653142/characterization-of-a-conjunctival-melanoma-cell-line-cm-as16-newly-established-from-a-metastatic-han-chinese-patient
#16
Yongyun Li, Qingfeng Shang, Peng Li, Jinfeng Cao, Liqi Zhu, Martine J Jager, Xianqun Fan, Shengfang Ge, Renbing Jia
Conjunctival melanoma (CM) is associated with metastases formation, can be fatal, and occurs in all different races. While cell lines are essential for experimental research, all available CM cell lines are derived from Caucasian patients. Furthermore, they are not derived from metastases. We aimed to establish a new CM cell line from a parotid metastasis in a Han Chinese patient and to depict its characteristics. The novel cell line, CM-AS16, was obtained from a surgical parotid sample and determined as a unique one with short tandem repeat (STR) analysis...
April 10, 2018: Experimental Eye Research
https://www.readbyqxmd.com/read/29653124/doxorubicin-triggers-bioenergetic-failure-and-p53-activation-in-mouse-stem-cell-derived-cardiomyocytes
#17
Teresa Cunha-Oliveira, Luciana L Ferreira, Ana Raquel Coelho, Cláudia M Deus, Paulo J Oliveira
Doxorubicin (DOX) is a widely used anticancer drug that could be even more effective if its clinical dosage was not limited because of delayed cardiotoxicity. Beating stem cell-derived cardiomyocytes are a preferred in vitro model to further uncover the mechanisms of DOX-induced cardiotoxicity. Our objective was to use cultured induced-pluripotent stem cell(iPSC)-derived mouse cardiomyocytes (Cor.At) to investigate the effects of DOX on cell and mitochondrial metabolism, as well as on stress responses. Non-proliferating and beating Cor...
April 10, 2018: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/29652844/gga-mir-451-negatively-regulates-mycoplasma-gallisepticum-hs-strain-induced-inflammatory-cytokine-production-via-targeting-ywhaz
#18
Yabo Zhao, Kang Zhang, Mengyun Zou, Yingfei Sun, Xiuli Peng
Mycoplasma gallisepticum (MG) is the most economically significant mycoplasma pathogen of poultry that causes chronic respiratory disease (CRD) in chickens. Although miRNAs have been identified as a major regulator effect on inflammatory response, it is largely unclear how they regulate MG-induced inflammation. The aim of this study was to investigate the functional roles of gga-miR-451 and identify downstream targets regulated by gga-miR-451 in MG infection of chicken. We found that the expression of gga-miR-451 was significantly up-regulated during MG infection of chicken embryo fibroblast cells (DF-1) and chicken embryonic lungs...
April 13, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29652658/bcl-xl-and-mcl-1-upregulation-by-calreticulin-promotes-apoptosis-resistance-of-fibroblast-like-synoviocytes-via-activation-of-pi3k-akt-and-stat3-pathways-in-rheumatoid-arthritis
#19
Yachong Jiao, Hongmei Ding, Shanshan Huang, Yixin Liu, Xuguo Sun, Wei Wei, Jun Ma, Fang Zheng
OBJECTIVES: Fibroblast-like synoviocytes (FLS) play key roles in synovium hyperplasia and pannus formation in rheumatoid arthritis (RA). The present study was undertaken to explore the mechanisms that calreticulin (CRT) promoted anti-apoptosis of RA FLS. METHODS: The expression of CRT and anti-apoptotic proteins Bcl-XL and Mcl-1 in RA synovium were detected by immunohistochemistry. The expression of Bcl-XL and Mcl-1 in RA FLS by CRT were determined. The phosphorylation of Akt and STAT3 was detected by western blot...
April 13, 2018: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/29652609/an-optimized-collagen-fibrin-blend-engineered-neural-tissue-promotes-peripheral-nerve-repair
#20
Christina Maria Anna Pia Schuh, Adam George Edward Day, Heinz Redl, James Phillips
Tissue engineering approaches in nerve regeneration often aim to improve results by bridging nerve defects with conduits that mimic key features of the nerve autograft. One such approach uses Schwann cell self-alignment and stabilisation within collagen gels to generate engineered neural tissue (EngNT). Here we investigated whether a novel blend of fibrin and collagen could be used to form EngNT, as prior to EngNT design a beneficial effect of fibrin on Schwann cell proliferation was observed. A range of blend formulations was tested in terms of mechanical behavior (gel formation, stabilisation, swelling, tensile strength and stiffness) and lead formulations were assessed in vitro...
March 21, 2018: Tissue Engineering. Part A
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