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https://www.readbyqxmd.com/read/28535649/-cancer-associated-fibroblasts-regulate-the-chemoresistance-of-lung-cancer-cell-line-a549-via-sdf-1-secretion
#1
F Zou, Z H Zhang, Y T Zhang, J Q Zhao, X L Zhang, C L Wen, X Y Song, W M Zhou
Objective: To investigate whether cancer-associated- fibroblasts (CAF), the key component of tumor microenvironment, regulate the chemoresistant capacity of lung cancer cell line A549 through SDF-1 secretion. Methods: Primary cell isolation techniques was used to isolate cancer-associated-fibroblasts from lung cancer patients. MTT assay was applied to determine the proliferation and chemoresistance of A549 cells. Quantative PCR was used to detect the mRNA changes of Bcl-xL. Western blotting was used to detect the protein expression of Bcl-xL...
May 23, 2017: Zhonghua Zhong Liu za Zhi [Chinese Journal of Oncology]
https://www.readbyqxmd.com/read/28531361/the-different-dosages-of-estrogen-affect-endometrial-fibrosis-and-receptivity-but-not-sdf-1-cxcr4-axis-in-the-treatment-of-intrauterine-adhesions
#2
Qin Zhou, Xixi Wu, Xuelin Dai, Rui Yuan, Hongbo Qi
OBJECTIVE: The study was to evaluate whether fibrotic markers, endometrial receptivity markers and SDF-1/CXCR4 had been changed in the treatment of intrauterine adhesions (IUAs) by different dosages of estrogen. STUDY DESIGN: A total of 39 patients with IUAs were treated with EV 4 mg or 9 mg randomly post-surgery. TGF-β1/MMP-9, VEGF/αvβ3 and SDF-1/CXCR4 were detected in endometrial tissue before and after treatment by real-time PCR and Western blot. RESULTS: TGF-β1 and MMP-9 expression significantly decreased after treatment for 3 months than before (p < ...
May 20, 2017: Gynecological Endocrinology
https://www.readbyqxmd.com/read/28528862/crocetin-restores-diabetic-endothelial-progenitor-cell-dysfunction-by-enhancing-no-bioavailability-via-regulation-of-pi3k-akt-enos-and-ros-pathways
#3
Wei Cao, Jinjin Cui, Shufeng Li, Donghui Zhang, Yibo Guo, Qiannan Li, Ying Luan, Xian Liu
AIMS: Endothelial progenitor cell (EPC) dysfunction underlies a critical risk factor in diabetic vascular complications due to function defect in restoring endothelium injury. Crocetin has attracted increasing attention in several vascular-related diseases. In present study, we aimed to explore the role of crocetin in diabetic EPC dysfunction. MAIN METHODS: EPCs were isolated from bone marrow in diabetic mice and identified using the fluorescence staining and flow cytometry...
May 18, 2017: Life Sciences
https://www.readbyqxmd.com/read/28515923/expression-of-cxcr-4-and-ido-in-human-colorectal-cancer-an-immunohistochemical-approach
#4
Masaichi Ogawa, Michiaki Watanabe, Takuo Hasegawa, Kohei Ichihara, Kazuhiko Yoshida, Katsuhiko Yanaga
C-X-C chemokine receptor type 4 (CXCR4), the receptor for the chemokine stromal cell-derived factor (SDF)-1 [also known as C-X-C motif chemokine 12 (CXCL12)], is involved in lymphocyte trafficking. Recent studies have demonstrated that, during pregnancy, a placental enzyme called indoleamine 2, 3-dioxygenase (IDO) exerts a key role in suppressing the maternal T-cell response against the fetus. In the present study, the significance of CXCR4 and IDO expression in human colorectal cancer (CRC) has been investigated by immunohistochemical assay, and their association with survival was analyzed...
May 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28513874/%C3%AE-3-adrenergic-regulation-of-epc-features-through-manipulation-of-the-bone-marrow-msc-niche
#5
Rana Vafaei, Seyed Mahdi Nassiri, Vahid Siavashi
Mesenchymal stem cells (MSCs) reside in a specific niche in the bone marrow however biological features of this niche are still not fully understood. Given the interactions of MSCs with endothelial cells in different tissues, bone marrow MSC niche may influence the biological features of endothelial progenitor cells (EPCs). To understand the role of the sympathetic nervous system in regulation of the MSC niche, we examined whether the manipulation of the MSC niche via β3-adrenergic signals will affect EPC features...
May 17, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28499457/preconditioning-of-bone-marrow-derived-mesenchymal-stromal-cells-by-tetramethylpyrazine-enhances-cell-migration-and-improves-functional-recovery-after-focal-cerebral-ischemia-in-rats
#6
Lin Li, Lisheng Chu, Yan Fang, Yan Yang, Tiebing Qu, Jianping Zhang, Yuanjun Yin, Jingjing Gu
BACKGROUND: Transplantation of bone marrow-derived mesenchymal stem cells (BMSCs) is one of the new therapeutic strategies for treating ischemic stroke. However, the relatively poor migratory capacity of BMSCs toward infarcted regions limited the therapeutic potential of this approach. Pharmacological preconditioning can increase the expression of CXC chemokine receptor 4 (CXCR4) in BMSCs and enhance cell migration toward the injury site. In the present study, we investigated whether tetramethylpyrazine (TMP) preconditioning could enhance BMSCs migration to the ischemic brain and improve functional recovery through upregulating CXCR4 expression...
May 12, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28495640/sources-of-hematopoietic-stem-and-progenitor-cells-and-methods-to-optimize-yields-for-clinical-cell-therapy
#7
REVIEW
Sandhya R Panch, James Szymanski, Bipin N Savani, David F Stroncek
Bone marrow (BM) aspirates, mobilized peripheral blood (PB) and umbilical cord blood (UCB) have developed as graft sources of hematopoietic stem and progenitor cells (HSPC) for stem cell transplantation and other cellular therapeutics. Individualized techniques are necessary to enhance graft HSPC yields and cell quality from each graft source. BM aspirates yield adequate CD34+cells but can result in relative delays in engraftment. Granulocyte-colony stimulating factor (G-CSF) primed bone marrow HSPC may facilitate faster engraftment while minimizing graft-versus-host disease (GVHD) in certain patient subsets...
May 8, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/28484859/effects-of-sdf-1-cxcr4-on-the-repair-of-traumatic-brain-injury-in-rats-by-mediating-bone-marrow-derived-mesenchymal-stem-cells
#8
Quan-Jun Deng, Xiao-Feng Xu, Jing Ren
Our study aims to investigate the effects of the SDF-1/CXCR4 axis on the repair of traumatic brain injury (TBI) in rats by mediating bone marrow derived from mesenchymal stem cells (BMSCs). Healthy male SD rats were collected, their tibiofibulars were removed, cultured, and BMSCs were collected. The expression of cell-surface molecular proteins was examined using flow cytometry. The mRNA and protein expression of CXCR4 in cells were tested using qRT-PCR and western blotting analysis. An electronic brain injury instrument was utilized to build TBI rat models and each rat was assigned into the experiment, positive control and control groups (10 rats in each group)...
May 8, 2017: Cellular and Molecular Neurobiology
https://www.readbyqxmd.com/read/28484742/serum-cytokine-levels-are-related-to-nesfatin-1-nucb2-expression-in-the-implantation-sites-of-spontaneous-abortion-model-of-cba-j-%C3%A3-dba-2-mice
#9
Yiwa Chung, Heejeong Kim, Sojeong Seon, Hyunwon Yang
The process of spontaneous abortion involves a complex mechanism with various cytokines, growth factors, and hormones during the pregnancy. However, the mechanism underlying spontaneous abortion by pro- and anti-inflammatory cytokines in the serum during the pregnancy is not fully understood. Therefore, the purpose of this study was to examine the relationship between the serum levels of pro- and anti-inflammatory cytokines and spontaneous abortion using the CBA/j × DBA/2 mouse model. Serum levels of pro-inflammatory cytokines, such as IFN-γ, IL-1α and TNF-α were not increased in abortion model mice, but anti-inflammatory cytokines, such as IL-4, IL-13 and IL-1ra were decreased compared to normal pregnant mice...
March 2017: Balsaeng'gwa Saengsig
https://www.readbyqxmd.com/read/28481877/cyp4a-in-tumor-associated-macrophages-promotes-pre-metastatic-niche-formation-and-metastasis
#10
X W Chen, T J Yu, J Zhang, Y Li, H L Chen, G F Yang, W Yu, Y Z Liu, X X Liu, C F Duan, H L Tang, M Qiu, C L Wang, H Zheng, J Yue, A M Guo, J Yang
Tumor-associated macrophages (TAMs) play an essential role in metastasis. However, what enables TAMs to have a superior capacity to establish pre-metastatic microenvironment in distant organs is unclear. Here we have begun to uncover the effects of cytochrome P450 (CYP) 4A in TAMs on lung pre-metastatic niche formation and metastasis. CYP4A(+) TAM infiltration was positively associated with metastasis, pre-metastatic niche formation and poor prognosis in breast cancer patients. The pharmacological inhibition of CYP4A reduced lung pre-metastatic niche formation (evidenced by a decrease in vascular endothelial growth factor receptor 1 positive (VEGFR1(+)) myeloid cell recruitment and pro-metastatic protein expression) and metastatic burden, accompanied with TAM polarization away from the M2 phenotype in spontaneous metastasis models of 4T1 breast cancer and B16F10 melanoma...
May 8, 2017: Oncogene
https://www.readbyqxmd.com/read/28478797/effect-of-matrix-rigidity-on-organ-specific-capture-of-tumor-cells-by-flow
#11
P Ma, X Shen, P Tan, L Yang, W Liu
Accumulating evidences have suggested that tumor metastasis exists prominent organ discrepancy. In this progression, the capture of intravascular tumor cells (TCs) to endothelium in distant tissues and organs plays a decisive role in the organ-specific metastasis formation. However, the mechanism of tumor cells preferentially arrest and adhere to endothelial cells (ECs) of target organ still remains elusive. By using the parallel plate flow chamber and the polyacrylamide gels with different matrix stiffness, we here explored the combined effects of matrix rigidity, shear stress, and chemokine SDF-1 on the capture of circulating tumor cells to ECs in the bloodstream...
April 29, 2017: Cellular and Molecular Biology
https://www.readbyqxmd.com/read/28478702/sdf-1-accelerates-cartilage-defect-repairing-by-recruiting-bmscs-and-promoting-chondrolgenic-differentiation
#12
Yuze Wang, Xiaojuan Sun, Jia Lv, Lingyuan Zeng, Xiaochun Wei, Lei Wei
Chemokine stromal cell-derived factor-1 (SDF-1) is a powerful chemoattractant for the localization of CXCR4 positive bone marrow stem cell (BMSC) into the bone marrow. We studied the effects of SDF-1 on the cartilage defect repair by recruiting BMSCs and promoting its chondrolgenic differentiation in vitro and in vivo. Chemotaxis analysis with Transwell plate showed that SDF-1 could recruit BMSCs through SDF-1/CXCR4 axis. RT-PCR, ELISA, and western blot results suggested that the levels of type II collagen and GAG were increased after incubation the BMSCs with SDF-1 compared with without SDF-1 group...
May 6, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28445830/overexpression-of-heme-oxygenase-1-in-bone-marrow-stromal-cells-promotes-microenvironment-mediated-imatinib-resistance-in-chronic-myeloid-leukemia
#13
Ping Liu, Dan Ma, Zhengyu Yu, Nana Zhe, Mei Ren, Ping Wang, Meisheng Yu, Jun Huang, Qin Fang, Jishi Wang
Neoplasm cells from patients with chronic myeloid leukemia (CML) interact with stromal cells of the surrounding microenvironment. Bone marrow stromal cells (BMSCs) represent the main population in CML marrow stroma, which may play a key role in disease support and progression. Heme oxygenase-1 (HO-1) is a key enzyme of antioxidative metabolism that is associated with cell proliferation and resistance to apoptosis. We herein up-regulated HO-1 expression of BMSCs and evaluated whether BMSCs influenced K562 cells survival...
April 23, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28426786/t140-blocks-the-sdf-1-cxcr4-signaling-pathway-and-prevents-cartilage-degeneration-in-an-osteoarthritis-disease-model
#14
Kun Wang, Yanlin Li, Rui Han, Guofeng Cai, Chuan He, Guoliang Wang, Di Jia
Osteoarthritis (OA) is one of the most common diseases affecting older people; however, there remains no effective targeted drug to combat OA. The aims of this study were (1) to explore the effect of T140 in regulating degeneration of articular cartilage in vivo by targeted blocking of the SDF-1/CXCR4 signaling pathway, and (2) to provide experimental evidence for the development of a novel OA-targeted pharmacotherapy. Thirty-six healthy Hartley guinea pigs were randomly divided into three groups: a T140-treated group (n = 12), a phosphate buffer saline control group (n = 12) and an untreated control group (n = 12)...
2017: PloS One
https://www.readbyqxmd.com/read/28421531/retraction-note-to-sdf-1-cxcr4-axis-regulates-cell-cycle-progression-and-epithelial-mesenchymal-transition-via-up-regulation-of-survivin-in-glioblastoma
#15
Anyan Liao, Ranran Shi, Yuliang Jiang, Suqing Tian, Panpan Li, Fuxi Song, Yalan Qu, Jinna Li, Haiqin Yun, Xiangshan Yang
No abstract text is available yet for this article.
April 18, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28416884/determination-of-soluble-dietary-fibre-content-of-okara-treated-with-high-hydrostatic-pressure-and-enzymes-a-comparative-evaluation-of-two-methods-aoac-and-hplc-elsd
#16
E Pérez-López, I Mateos-Aparicio, P Rupérez
ABSTRACT: Okara is a promising by-product from soybean and a rich source of dietary fibre, chiefly insoluble (IDF). To increase its solubility and functionality, a treatment with high hydrostatic pressure (HHP) assisted by food grade enzymes -Ultraflo(®) L or Viscozyme(®) L- has been performed. To monitor the effectiveness, an analysis of dietary fibre, mainly the soluble fraction (SDF), was accomplished by the AOAC enzymatic-gravimetric method with dialysis followed by both, spectrophotometric methods and High Performance Liquid Chromatography with Evaporative Light Scattering Detector (HPLC-ELSD) analysis of the soluble fraction...
April 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28413458/mir-9-functions-as-a-tumor-inhibitor-of-cell-proliferation-in-epithelial-ovarian-cancer-through-targeting-the-sdf-1-cxcr4-pathway
#17
Lin He, Li Zhang, Mengfei Wang, Wenrong Wang
The current study aimed to investigate the potential role of miR-9 in the inhibition of ovarian cancer progression through the stromal cell-derived factor-1 (SDF-1)/ C-X-C chemokine receptor type 4 (CXCR4) pathway and to provide a theoretical basis for the diagnosis and treatment of ovarian cancer. Human ovarian cancer OVCAR-3 cells were transfected with miR-9 short hairpin RNA (shRNA). The effect of miR-9 on the mRNA expression levels of CXCR4 were analyzed using reverse transcription-quantitative polymerase chain reaction...
April 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28412763/altered-expression-of-sdf-1-and-cxcr4-during-fracture-healing-in-diabetes-mellitus
#18
Michio Arakura, Sang Yang Lee, Shunsuke Takahara, Etsuko Okumachi, Takashi Iwakura, Tomoaki Fukui, Kotaro Nishida, Masahiro Kurosaka, Ryosuke Kuroda, Takahiro Niikura
PURPOSE: Diabetes mellitus (DM) is known to impair fracture healing. The purpose of this study was to elucidate and compare the gene expression patterns and localization of stromal cell-derived factor 1 (SDF-1) and CXC chemokine receptor 4 (CXCR4) during fracture healing of the femur in rats with and without DM. METHODS: Closed transverse fractures were created in the femurs of rats equally divided into a DM group and control group; DM was induced by streptozotocin...
April 15, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28412671/role-of-sdf-1-and-cxcr4-in-the-proliferation-migration-and-invasion-of-cervical-cancer
#19
Chen Wang, Hailing Cheng, Yanyun Li
This study was to investigate the role of stromal cell-derived factor 1 (SDF-1) and its corresponding receptor CXCR4 in the proliferation, migration and invasion of cervical cancer HeLa cells. CXCR4 expression in HeLa cells was measured by flow cytometry and Western Blot. Role of SDF-1 and CXCR4 in the HeLa cells proliferation was measured by MTT. Role of SDF-1 and CXCR4 in the migration and invasion of HeLa cell was measured by Boyden chamber. High expression of CXCR4 was observed on the surface of HeLa cells...
November 2016: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28408934/sdf-1-cxcr4-signaling-maintains-stemness-signature-in-mouse-neural-stem-progenitor-cells
#20
Shih-Yin Ho, Thai-Yen Ling, Hsing-Yu Lin, Jeffrey Tsai-Jui Liou, Fei-Chih Liu, I-Chun Chen, Sue-Wei Lee, Yu Hsu, Dar-Ming Lai, Horng-Huei Liou
SDF-1 and its primary receptor, CXCR4, are highly expressed in the embryonic central nervous system (CNS) and play a crucial role in brain architecture. Loss of SDF-1/CXCR4 signaling causes abnormal development of neural stem/progenitor cells (NSCs/NPCs) in the cerebellum, hippocampus, and cortex. However, the mechanism of SDF-1/CXCR4 axis in NSCs/NPCs regulation remains unknown. In this study, we found that elimination of SDF-1/CXCR4 transduction caused NSCs/NPCs to lose their stemness characteristics and to encounter neurogenic differentiation...
2017: Stem Cells International
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