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https://www.readbyqxmd.com/read/29680290/estrogen-receptor-beta-signaling-inhibits-pdgf-induced-human-airway-smooth-muscle-proliferation
#1
Nilesh Sudhakar Ambhore, Rathnavali Katragadda, Rama Satyanarayana Raju Kalidhindi, Michael A Thompson, Christina M Pabelick, Y S Prakash, Sathish Venkatachalem
Airway smooth muscle (ASM) cell hyperplasia driven by persistent inflammation is a hallmark feature of remodeling in asthma. Sex steroid signaling in the lungs is of considerable interest, given epidemiological data showing more asthma in pre-menopausal women and aging men. Our previous studies demonstrated that estrogen receptor (ER) expression increases in asthmatic human ASM; however, very limited data are available regarding differential roles of ERα vs. ERβ isoforms in human ASM cell proliferation. In this study, we evaluated the effect of selective ERα and ERβ modulators on platelet-derived growth factor (PDGF)-stimulated ASM proliferation and the mechanisms involved...
April 19, 2018: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/29677490/egfr-phosphorylated-platelet-isoform-of-phosphofructokinase-1-promotes-pi3k-activation
#2
Jong-Ho Lee, Rui Liu, Jing Li, Yugang Wang, Lin Tan, Xin-Jian Li, Xu Qian, Chuanbao Zhang, Yan Xia, Daqian Xu, Wei Guo, Zhiyong Ding, Linyong Du, Yanhua Zheng, Qianming Chen, Philip L Lorenzi, Gordon B Mills, Tao Jiang, Zhimin Lu
EGFR activates phosphatidylinositide 3-kinase (PI3K), but the mechanism underlying this activation is not completely understood. We demonstrated here that EGFR activation resulted in lysine acetyltransferase 5 (KAT5)-mediated K395 acetylation of the platelet isoform of phosphofructokinase 1 (PFKP) and subsequent translocation of PFKP to the plasma membrane, where the PFKP was phosphorylated at Y64 by EGFR. Phosphorylated PFKP binds to the N-terminal SH2 domain of p85α, which is distinct from binding of Gab1 to the C-terminal SH2 domain of p85α, and recruited p85α to the plasma membrane resulting in PI3K activation...
April 19, 2018: Molecular Cell
https://www.readbyqxmd.com/read/29666579/d-dencichine-regulates-thrombopoiesis-by-promoting-megakaryocyte-adhesion-migration-and-proplatelet-formation
#3
Shilan Ding, Min Wang, Song Fang, Huibo Xu, Huiting Fan, Yu Tian, Yadong Zhai, Shan Lu, Xin Qi, Fei Wei, Guibo Sun, Xiaobo Sun
Life-threatening chemotherapy-induced thrombocytopenia can increase the risk of bleeding due to a dramatic low platelet count, which may limit or delay treatment schedules in cancer patients. The pressing need for the rapid alleviation of the symptoms of thrombocytopenia has prompted us to search for novel highly effective and safe thrombopoietic agents. Pharmacological investigations have indicated that dencichine can prevent and treat blood loss and increase the number of platelets. On the basis of the neurotoxicity of dencichine, D-dencichine is artificially synthesized in the laboratory...
2018: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29661222/platelet-rich-plasma-enhances-the-proliferation-of-human-adipose-stem-cells-through-multiple-signaling-pathways
#4
Fangyuan Lai, Natsuko Kakudo, Naoki Morimoto, Shigeru Taketani, Tomoya Hara, Takeshi Ogawa, Kenji Kusumoto
BACKGROUND: Platelet-rich plasma (PRP) is an autologous blood product that contains a high concentration of several growth factors. Platelet-derived growth factor (PDGF)-BB is a potential mitogen for human adipose-derived stem cells (hASCs). PRP stimulates proliferation of hASCs; however, the signaling pathways activated by PRP remain unclear. METHODS: hASCs were cultured with or without PRP or PDGF-BB, and proliferation was assessed. hASCs were also treated with PRP or PDGF-BB with or without imatinib, which is a PDGF receptor tyrosine kinase inhibitor, or sorafenib, which is a multikinase inhibitor...
April 16, 2018: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29620219/anthricin%C3%A2-induced-caspase%C3%A2-dependent-apoptosis-through-igf1r-pi3k-akt-pathway-inhibition-in-a549-human-non%C3%A2-small-lung-cancer-cells
#5
Bo-Ram Park, Seul Ah Lee, Sung Min Moon, Chun Sung Kim
Anthricin (deoxypodophyllotoxin) is a major lignan in Anthriscus sylvestris and possesses many bioactivities such as antiproliferative, antitumor, anti‑platelet aggregation, antiviral and anti‑inflammatory actions. However, the anticancer effects of anthricin on A549 human non‑small cell lung cancer cells and potential molecular mechanisms remain unknown. Therefore, we investigated the anticancer effect of anthricin and the underlying mechanism in A549 cells. Anthricin (10‑200 nM) inhibited the viability of A549 cells in a dose‑ and time‑dependent manner...
March 27, 2018: Oncology Reports
https://www.readbyqxmd.com/read/29607413/platelet-rich-plasma-protects-huvecs-against-ox-ldl-induced-injury
#6
Jinsong Wang, Yang Wang, Yonghui Li, Shenming Wang, Xiaonan Zhu
Platelet-rich plasma (PRP) contains a variety of cytokines, some of which ameliorate oX-LDL (oxidized low-density lipoprotein)-induced endothelial cell (EC) injury. Therefore, we hypothesized that PRP might alleviate oX-LDL-induced injury. Methodology: Human umbilical vein endothelial cells (HUVECs) were divided into four groups: a PPP (platelet-poor plasma) group, an oX-LDL group, an oX-LDL+PRP group and a PRP group. CCK-8 (Cell Counting Kit) assay, Annexin V-FITC/7-AAD and Hochest 33342 staining were performed to assess cell proliferation and apoptosis...
2018: Open Medicine (Warsaw, Poland)
https://www.readbyqxmd.com/read/29575062/restored-response-to-adp-downstream-of-purinergic-p2y-12-receptor-in-apheresis-platelets-after-pathogen-reducing-xenon-flash-treatment
#7
Hideki Abe, Takaaki Abe, Masayuki Shiba, Masahiro Satake
BACKGROUND: Our previous study revealed that pathogen-reducing filtered xenon flash-treated platelets (fXe-PLTs) showed sustained aggregation in response to adenosine diphosphate (ADP), but apheresis-collected PLTs (Aph-PLTs) showed reversible aggregation. STUDY DESIGN AND METHODS: Aph-PLTs, fXe-PLTs, and freshly prepared PLTs (PRP-PLTs) from whole blood were used to investigate the following responses to ADP: concentration response and effects of ADP receptor antagonists on aggregation, the cytosolic calcium (Ca2+ ) flux downstream of P2Y1 receptor signaling, and phosphorylation of vasodilator-stimulated phosphoprotein (VASP) and signaling intermediate protein Akt downstream of the P2Y12 receptor...
March 25, 2018: Transfusion
https://www.readbyqxmd.com/read/29567387/the-spatial-molecular-pattern-of-integrin-recognition-sites-and-their-immobilization-to-colloidal-nanobeads-determine-%C3%AE-2%C3%AE-1-integrin-dependent-platelet-activation
#8
Augusto Martins Lima, Seraphine V Wegner, Ana C Martins Cavaco, Maria Inacia Estevão-Costa, Raquel Sanz-Soler, Stephan Niland, Georgii Nosov, Jürgen Klingauf, Joachim P Spatz, Johannes A Eble
Collagen, a strong platelet activator, is recognized by integrin α2β1 and GPVI. It induces aggregation, if added to suspended platelets, or platelet adhesion if immobilized to a surface. The recombinant non-prolylhydroxylated mini-collagen FC3 triple helix containing one α2β1 integrin binding site is a tool to specifically study how α2β1 integrin activates platelet. Whereas soluble FC3 monomers antagonistically block collagen-induced platelet activation, immobilization of several FC3 molecules to an interface or to colloidal nanobeads determines the agonistic action of FC3...
March 16, 2018: Biomaterials
https://www.readbyqxmd.com/read/29514109/propranolol-prevents-liver-cirrhosis-by-inhibiting-hepatic-stellate-cell-activation-mediated-by-the-pdgfr-akt-pathway
#9
Qian Ding, Zhen Li, Bin Liu, Liping Ling, Xiangguo Tian, Chunqing Zhang
Propranolol is known to reduce portal pressure by decreasing blood flow to the splanchnic circulation and the liver. However, it is unknown if propranolol improves fibrogenesis and sinusoidal remodeling in the cirrhotic liver. The aim of this study was to investigate the therapeutic effects of propranolol on carbon tetrachloride (CCl4 )-induced liver fibrosis in a mouse model and the intrinsic mechanisms underlying those effects. In this study, a hepatic cirrhosis mouse model was induced by CCl4 administration for 6weeks...
March 4, 2018: Human Pathology
https://www.readbyqxmd.com/read/29512900/phase-1-trial-pharmacokinetics-and-pharmacodynamics-of-dasatinib-combined-with-crizotinib-in-children-with-recurrent-or-progressive-high-grade-and-diffuse-intrinsic-pontine-glioma
#10
Alberto Broniscer, Sujuan Jia, Belinda Mandrell, Dima Hamideh, Jie Huang, Arzu Onar-Thomas, Amar Gajjar, Susana C Raimondi, Ruth G Tatevossian, Clinton F Stewart
BACKGROUND: Progressive/recurrent high-grade and diffuse intrinsic pontine gliomas (DIPGs) are fatal. Treatments targeting molecular pathways critical for these cancers are needed. METHODS: We conducted a phase 1 study (rolling-six design) to establish the safety and maximum tolerated dose (MTD) of dasatinib, an oral platelet-derived growth factor receptor A (PDGFRA) inhibitor, and crizotinib, an oral c-Met inhibitor, in such patients. Pharmacokinetics of both agents were performed...
March 7, 2018: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/29496178/eisenia-bicyclis-brown-alga-modulates-platelet-function-and-inhibits-thrombus-formation-via-impaired-p-2-y-12-receptor-signaling-pathway
#11
Muhammad Irfan, Tae-Hyung Kwon, Bong-Sik Yun, Nyun-Ho Park, Man Hee Rhee
BACKGROUND AND PURPOSE: Sea weeds have been used since ancient times in Asian countries, especially in Korea, Japan, and China, as both edible sea vegetables and traditional medicinal tonics due to their health benefits. Eisenia bicyclis has been studied for anti-allergic and anti-cancer effects; however, its effects on the cardiovascular system, especially on platelet function, are yet to be explored. Therefore, we examined the effect of E. bicyclis on platelet function. STUDY DESIGN AND METHODS: E...
February 1, 2018: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/29486057/niclosamide-inhibits-vascular-smooth-muscle-cell-proliferation-migration-and-attenuates-neointimal-hyperplasia-in-injured-rat-carotid-arteries
#12
Xiao-Lin Xiao, Nan Hu, Xin-Zi Zhang, Man Jiang, Chang Chen, Rui Ma, Zhen-Gang Ma, Jin-Lai Gao, Xiu-Chen Xuan, Zhi-Jie Sun, De-Li Dong
BACKGROUND AND PURPOSE: The anti-helminthic drug niclosamide regulates multiple cellular signals including STAT3, AMPK, Akt, Wnt/β-catenin, and mitochondrial uncoupling which involved in neointimal hyperplasia. Therefore, the aim of the present study is to examine the effects of the niclosamide on vascular smooth muscle cell proliferation, migration, and neointimal hyperplasia and elucidate the potential mechanisms. EXPERIMENTAL APPROACH: Cell migration was measured by using wound-induced migration assay and Boyden chamber assay...
February 27, 2018: British Journal of Pharmacology
https://www.readbyqxmd.com/read/29482651/effects-of-platelet-rich-plasma-on-the-activity-of-human-menstrual-blood-derived-stromal-cells-in-vitro
#13
Siwen Zhang, Pingping Li, Zhengwei Yuan, Jichun Tan
BACKGROUND: Human menstrual blood-derived stromal cells (MenSCs) are highly proliferative and show multiple differentiation capacity. The convenience and non-invasiveness make MenSC a novel cell source for regenerative medicine applications. Platelet-rich plasma (PRP) contains abundant growth factors which are beneficial to wound healing. However, the influence of PRP on MenSCs remains elusive. Here, we evaluated the role of PRP in MenSCs proliferation and assessed the effects of PRP on endometrial receptivity regulation in vitro...
February 26, 2018: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29470443/structure-antiplatelet-activity-relationships-of-novel-ruthenium-ii-complexes-investigation-of-its-molecular-targets
#14
Chih-Hsuan Hsia, Thanasekaran Jayakumar, Joen-Rong Sheu, Shin-Yi Tsao, Marappan Velusamy, Chih-Wei Hsia, Duen-Suey Chou, Chao-Chien Chang, Chi-Li Chung, Themmila Khamrang, Kao-Chang Lin
The regulation of platelet function by pharmacological agents that modulate platelet signaling has proven to be a positive approach to the prevention of thrombosis. Ruthenium complexes are fascinating for the development of new drugs, as they possess numerous chemical and biological properties. The present study aims to evaluate the structure-activity relationship (SAR) of newly synthesized ruthenium (II) complexes, TQ-1, TQ-2 and TQ-3 in agonists-induced washed human platelets. Silica gel column chromatography, aggregometry, immunoblotting, NMR, and X-ray analyses were performed in this study...
February 22, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29467552/metformin-attenuates-motility-contraction-and-fibrogenic-response-of-hepatic-stellate-cells-in-vivo-and-in-vitro-by-activating-amp-activated-protein-kinase
#15
Zhen Li, Qian Ding, Li-Ping Ling, Ying Wu, Dong-Xiao Meng, Xiao Li, Chun-Qing Zhang
AIM: To investigate the effect of metformin on activated hepatic stellate cells (HSCs) and the possible signaling pathways involved. METHODS: A fibrotic mouse model was generated by intraperitoneal injection of carbon tetrachloride (CCl4 ) and subsequent treatment with or without metformin. The level of fibrosis was detected by hematoxylin-eosin staining, Sirius Red staining, and immunohistochemistry. The HSC cell line LX-2 was used for in vitro studies. The effect of metformin on cell proliferation (CCK8 assay), motility (scratch test and Transwell assay), contraction (collagen gel contraction assay), extracellular matrix (ECM) secretion (Western blot), and angiogenesis (ELISA and tube formation assay) was investigated...
February 21, 2018: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/29436635/differential-expression-profiles-of-long-noncoding-rna-and-mrna-in-colorectal-cancer-tissues-from-patients-with-lung-metastasis
#16
Ruo Shu, Yu Xu, Yan Tian, Yujian Zeng, Liang Sun, Fangyou Gong, Yi Lei, Kunhua Wang, Huayou Luo
Lungs are the most common extra‑abdominal site of metastasis of colorectal cancer (CRC), in which long noncoding RNA (lncRNA) may serve a role. In the present study, a high‑throughput microarray assay was performed to detect lncRNA expression and identify novel targets for further study of lung metastasis in CRC. In the CRC tissues from patients with lung metastasis, 7,632 lncRNA (3,574 upregulated and 4,058 downregulated) and 6,185 mRNA (3,394 upregulated and 2,791 downregulated) were detected to be differentially expressed with a fold change ≥2 and P<0...
February 8, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29436605/novel-iridium-iii-%C3%A2-derived-organometallic-compound-for-the-inhibition-of-human-platelet-activation
#17
Kou-Gi Shyu, Marappan Velusamy, Chih-Wei Hsia, Chih-Hao Yang, Chih-Hsuan Hsia, Duen-Suey Chou, Thanasekaran Jayakumar, Joen-Rong Sheu, Jiun-Yi Li
Since cisplatin achieved clinical success, transition metal platinum (Pt) drugs have been effectively used for the treatment of cancer. Iridium (Ir) compounds are considered to be potential alternatives to Pt compounds, as they possess promising anticancer effects with minor side effects. Platelet activation is associated with the metastasis and progression of cancer, and also with arterial thrombosis. Therefore, it is necessary to develop novel, effective antithrombotic agents. An Ir (III)‑derived complex, [Ir (Cp*) 1‑(2‑pyridyl)‑3‑(3‑methoxyphenyl)imidazo[1,5‑a]pyridine Cl]BF4 (Ir‑3), was developed as a novel antiplatelet drug...
February 7, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29404727/combined-use-of-bone-marrow-derived-mesenchymal-stromal-cells-bm-mscs-and-platelet-rich-plasma-prp-stimulates-proliferation-and-differentiation-of-myoblasts-in-vitro-new-therapeutic-perspectives-for-skeletal-muscle-repair-regeneration
#18
Chiara Sassoli, Larissa Vallone, Alessia Tani, Flaminia Chellini, Daniele Nosi, Sandra Zecchi-Orlandini
Satellite cell-mediated skeletal muscle repair/regeneration is compromised in cases of extended damage. Bone marrow mesenchymal stromal cells (BM-MSCs) hold promise for muscle healing but some criticisms hamper their clinical application, including the need to avoid animal serum contamination for expansion and the scarce survival after transplant. In this context, platelet-rich plasma (PRP) could offer advantages. Here, we compare the effects of PRP or standard culture media on C2C12 myoblast, satellite cell and BM-MSC viability, survival, proliferation and myogenic differentiation and evaluate PRP/BM-MSC combination effects in promoting myogenic differentiation...
February 5, 2018: Cell and Tissue Research
https://www.readbyqxmd.com/read/29385909/wu-tou-decoction-inhibits-angiogenesis-in-experimental-arthritis-by-targeting-vegfr2-signaling-pathway
#19
Lianhua He, Chunfang Liu, Congcong Sun, Jingxia Wang, Kai Zhi, Danni Sun, Hui Wang, Qianqian Wang, Na Lin
Wu-tou decoction (WTD) is a classic traditional Chinese medicine formula and has been extensively used for the treatment of rheumatoid arthritis (RA). Previous reports indicates that WTD possesses anti-inflammatory and antinociceptive activities, and inhibits the development of arthritic joints and disease severity of collagen-induced arthritis (CIA) or adjuvant-induced rats; however, its action on angiogenesis of RA has not been clarified. The present study aims to determine the anti-angiogenic activity of WTD in CIA rats and in various angiogenesis models...
January 31, 2018: Rejuvenation Research
https://www.readbyqxmd.com/read/29371953/evaluation-of-the-combination-of-the-dual-m-torc1-2-inhibitor-vistusertib-azd2014-and-paclitaxel-in-ovarian-cancer-models
#20
Anne-Christine Wong Te Fong, Parames Thavasu, Sladjana Gagrica, Karen E Swales, Martin O Leach, Sabina C Cosulich, Yuen-Li Chung, Udai Banerji
Activation of the PI3K/mTOR pathway has been shown to be correlated with resistance to chemotherapy in ovarian cancer. We aimed to investigate the effects of combining inhibition of mTORC1 and 2 using the mTOR kinase inhibitor vistusertib (AZD2014) with paclitaxel in in vitro and in vivo ovarian cancer models. The combination of vistusertib and paclitaxel on cell growth was additive in a majority of cell lines in the panel ( n = 12) studied. A cisplatin- resistant model (A2780Cis) was studied in vitro and in vivo ...
December 26, 2017: Oncotarget
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