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https://www.readbyqxmd.com/read/29126441/tgf%C3%AE-3-recruits-endogenous-mesenchymal-stem-cells-to-initiate-bone-regeneration
#1
Moyuan Deng, Tieniu Mei, Tianyong Hou, Keyu Luo, Fei Luo, Aijun Yang, Bo Yu, Hao Pang, Shiwu Dong, Jianzhong Xu
BACKGROUND: The recruitment of a sufficient number of endogenous mesenchymal stem cells (MSCs) is the first stage of in-situ tissue regeneration. Transforming growth factor beta-3 (TGFβ3) could recruit stem or progenitor cells and endothelial cells to participate in tissue regeneration. However, the mechanism of TGFβ3 recruiting MSCs toward bone regeneration has remained obscure. METHODS: We estimated the promigratory property of TGFβ3 on human bone marrow MSCs (hBMSCs) cocultured with the vascular cells (human umbilical artery smooth muscle cells or human umbilical vein endothelial cells) or not by Transwell assay...
November 10, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29120093/imbalanced-osteogenesis-and-adipogenesis-in-mice-deficient-of-the-chemokine-cxcl12-sdf1-in-the-bone-mesenchymal-stem-progenitor-cells
#2
Yi-Shiuan Tzeng, Ni-Chun Chung, Yu-Ren Chen, Hsin-Yi Huang, Wen-Po Chunang, Dar-Ming Lai
Bone and bone marrow serve as an imperative ecosystem to various types of cells participating in critical body functions. The chemokine Cxcl12, also known as stromal cell-derived factor 1 (Sdf1), is one of the communication factors in the marrow microenvironment that regulate hematopoietic stem/progenitor cell homeostasis. However, the function of Cxcl12 in other bone marrow cells in vivo is yet to be discovered. Here we report a novel function of Cxcl12 in postnatal bone development and homeostasis. Targeted deletion of Cxcl12 in Prx1- or Osx-expressing mesenchymal stem/progenitor cells (MSPCs), but not in mature osteoblasts, resulted in marrow adiposity and reduced trabecular bone content...
November 9, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/29100326/fiber-modified-hexon-chimeric-oncolytic-adenovirus-targeting-cancer-associated-fibroblasts-inhibits-tumor-growth-in-gastric-carcinoma
#3
Tao Pang, Xinghua Wang, Jun Gao, Wei Chen, Xiao Jun Shen, Ming Ming Nie, Tianhang Luo, Kai Yin, Guoen Fang, Kai Xuan Wang, Xu Chao Xue
Objective: To evaluate the effects of fiber-modified hexon-chimeric recombinant oncolytic adenovirus targeting cancer associated fibroblasts (CAFs) on the gastric CAFs and the transplantation tumor mice model of gastric carcinoma (GC). Results: Compared with BJ cells and GPFs, the reproduction and infectivity of P9, P9-4C or GP adenoviruses were markedly higher in gastric CAFs. In addition, P9, P9-4C or GP had a significantly relatively more killing effect on gastric CAFs compared with GPFs, and have less oncolytic effect in BJ cells...
September 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/29073721/microrna-381-induced-down-regulation-of-cxcr4-promotes-the-proliferation-of-renal-tubular-epithelial-cells-in-rat-models-of-renal-ischemia-reperfusion-injury
#4
Gui-Hong Zheng, Xin Wen, Yong-Jian Wang, Xin-Rui Han, Qun Shan, Wang Li, Tian Zhao, Dong-Mei Wu, Jun Lu, Yuan-Lin Zheng
This study aims to explore whether microRNA-381 (miR-381) mediating CXCR4 affects the renal tubular epithelial cells (RTEC) of renal ischemia reperfusion (I/R) injury. Forty-eight rats were assigned into the I/R (n = 24, successfully established as I/R model) and sham (n = 24) groups. After collecting kidney tissues, immunohistochemistry and microvascular density (MVD) counting were conducted for CXCR4 positive expression and MVD numbers. RTECs were assigned into the sham, blank, negative control (NC), miR-381 mimics, miR-381 inhibitor, si-CXCR4, and miR-381 inhibitor + si-CXCR4 groups...
October 26, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29037917/immunomodulation-after-radiofrequency-ablation-of-locally-advanced-pancreatic-cancer-by-monitoring-the-immune-response-in-10-patients
#5
Alessandro Giardino, Giulio Innamorati, Stefano Ugel, Omar Perbellini, Roberto Girelli, Isabella Frigerio, Paolo Regi, Filippo Scopelliti, Giovanni Butturini, Salvatore Paiella, Matilde Bacchion, Claudio Bassi
OBJECTIVE/BACKGROUND: RFA of pancreatic cancer has been demonstrated to be feasible and safe with a positive impact on survival. The aim was to investigate whether an immune reaction is activated after locally advanced pancreatic cancer (LAPC) ablation. METHODS: Peripheral Blood samples were obtained preoperatively and on post-operative days 3-30. Evaluated parameters were: cells [CD4(+), CD8(+) and activated subsets, T-Reg, Monocytes, myeloid and plasmocytoid Dendritic cells (mDC and pDC)] and cytokines [Interleukin (IL)-6, Stromal-cells derived factor (SDF)-1, IL-1β, Tumour-Necrosis Factor (TNF)-α, Interferon (IFN)-γ, Vascular Endothelial Growth Factor (VEGF), chemokine (C-C motif) ligand 5 (CCL-5), Transforming-Growth Factor (TGF)-β]...
September 27, 2017: Pancreatology: Official Journal of the International Association of Pancreatology (IAP) ... [et Al.]
https://www.readbyqxmd.com/read/29016745/cxcl12-cxcr4-signalling-plays-an-essential-role-in-proper-patterning-of-aortic-arch-and-pulmonary-arteries
#6
Bo-Gyeong Kim, Yong Hwan Kim, Edward L Stanley, Eva M Garrido-Martin, Young Jae Lee, S Paul Oh
Aims: Chemokine CXCL12 (stromal derived factor 1: SDF1) has been shown to play important roles in various processes of cardiovascular development. In recent avian studies, CXCL12 signalling has been implicated in guidance of cardiac neural crest cells for their participation in the development of outflow tract and cardiac septum. The goal of this study is to investigate the extent to which CXCL12 signalling contribute to the development of aortic arch and pulmonary arteries in mammals...
November 1, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28962641/overexpression-of-hypoxia-inducible-factor-1-alpha-improves-immunomodulation-by-dental-mesenchymal-stem-cells
#7
Victor G Martinez, Imelda Ontoria-Oviedo, Carolina P Ricardo, Sian E Harding, Rosa Sacedon, Alberto Varas, Agustin Zapata, Pilar Sepulveda, Angeles Vicente
BACKGROUND: Human dental mesenchymal stem cells (MSCs) are considered as highly accessible and attractive MSCs for use in regenerative medicine, yet some of their features are not as well characterized as other MSCs. Hypoxia-preconditioning and hypoxia-inducible factor 1 (HIF-1) alpha overexpression significantly improves MSC therapeutics, but the mechanisms involved are not fully understood. In the present study, we characterize immunomodulatory properties of dental MSCs and determine changes in their ability to modulate adaptive and innate immune populations after HIF-1 alpha overexpression...
September 29, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28871263/the-activity-of-the-neutral-sphingomyelinase-is-important-in-t-cell-recruitment-and-directional-migration
#8
Lena Collenburg, Niklas Beyersdorf, Teresa Wiese, Christoph Arenz, Essa M Saied, Katrin Anne Becker-Flegler, Sibylle Schneider-Schaulies, Elita Avota
Breakdown of sphingomyelin as catalyzed by the activity of sphingomyelinases profoundly affects biophysical properties of cellular membranes which is particularly important with regard to compartmentalization of surface receptors and their signaling relay. As it is activated both upon TCR ligation and co-stimulation in a spatiotemporally controlled manner, the neutral sphingomyelinase (NSM) has proven to be important in T cell activation, where it appears to play a particularly important role in cytoskeletal reorganization and cell polarization...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28837147/doxorubicin-upregulates-cxcr4-via-mir-200c-zeb1-dependent-mechanism-in-human-cardiac-mesenchymal-progenitor-cells
#9
Sara Beji, Giuseppina Milano, Alessandro Scopece, Lucia Cicchillitti, Chiara Cencioni, Mario Picozza, Yuri D'Alessandra, Sarah Pizzolato, Matteo Bertolotti, Gabriella Spaltro, Angela Raucci, Giulia Piaggio, Giulio Pompilio, Maurizio C Capogrossi, Daniele Avitabile, Alessandra Magenta, Elisa Gambini
Doxorubicin (DOXO) treatment is limited by its cardiotoxicity, since it causes cardiac-progenitor-cell depletion. Although the cardioprotective role of the stromal cell-derived factor-1/C-X-C chemokine receptor type 4 (SDF1/CXCR4) axis is well established, its involvement during DOXO-induced cardiotoxicity has never been investigated. We showed that in a mouse model of DOXO-induced cardiomyopathy, CXCR4(+) cells were increased in response to DOXO, mainly in human cardiac mesenchymal progenitor cells (CmPC), a subpopulation with regenerative potential...
August 24, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28748061/host-molecular-factors-and-viral-genotypes-in-the-mother-to-child-hiv-1-transmission-in-sub-saharan-africa
#10
REVIEW
Linda Chapdeleine M Mouafo, Béatrice Dambaya, Nicole N Ngoufack, Céline N Nkenfou
Maternal viral load and immune status, timing and route of delivery, viral subtype, and host genetics are known to influence the transmission, acquisition and disease progression of human immunodeficiency virus-1 (HIV-1) infection. This review summarizes the findings from published works on host molecular factors and virus genotypes affecting mother to child transmission (MTCT) in Africa and identifies the gaps that need to be addressed in future research. Articles in PubMed, Google and AIDSearch and relevant conference abstracts publications were searched...
June 23, 2017: Journal of Public Health in Africa
https://www.readbyqxmd.com/read/28724746/tpl2-therapeutic-targeting-tumor-progression-locus-2-atf4-activating-transcription-factor-4-sdf1%C3%AE-chemokine-stromal-cell-derived-factor-%C3%AE-axis-suppresses-diabetic-retinopathy
#11
De-Wei Lai, Keng-Hung Lin, Wayne Huey-Herng Sheu, Maw-Rong Lee, Chung-Yu Chen, Wen-Jane Lee, Yi-Wen Hung, Chin-Chang Shen, Tsung-Ju Chung, Shing-Hwa Liu, Meei-Ling Sheu
RATIONALE: Diabetic retinopathy is characterized by vasopermeability, vascular leakage, inflammation, blood-retinal barrier breakdown, capillary degeneration, and neovascularization. However, the mechanisms underlying the association between diabetes mellitus and progression retinopathy remain unclear. OBJECTIVE: TPL2 (tumor progression locus 2), a serine-threonine protein kinase, exerts a pathological effect on vascular angiogenesis. This study investigated the role of N(ε)-(carboxymethyl)lysine, a major advanced glycation end products, and the involved TPL2-related molecular signals in diabetic retinopathy using models of in vitro and in vivo and human samples...
September 1, 2017: Circulation Research
https://www.readbyqxmd.com/read/28688831/local-chemical-sympathectomy-of-rat-bone-marrow-and-its-effect-on-marrow-cell-composition
#12
P Dubový, I Klusáková, L Kučera, J Osičková, J Chovancová, T Loja, J Mayer, M Doubek, M Joukal
Existing experimental studies of the effect of sympathetic nerve fibers on bone marrow cells are based on the systemic administration of neurotoxic 6-hydroxydopamine. The method of global chemical sympathectomy has some serious disadvantages and could lead to questionable results. We describe a new method of local chemical sympathectomy of rat femoral bone marrow using guanethidine (Ismelin) delivery using an osmotic mini pump. Local guanethidine treatment for 14days led to complete elimination of sympathetic fibers in femoral bone marrow in contrast to bone marrow of contralateral or naïve femurs...
September 2017: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/28688148/adipose-derived-mesenchymal-stem-cells-therapy-for-acute-kidney-injury-induced-by-ischemia-reperfusion-in-a-rat-model
#13
Jian-Bo Zhang, Xiao-Qiao Wang, Guo-Lin Lu, Huan-Sen Huang, Shi-Yuan Xu
Acute kidney injury (AKI) represents a group of complicated syndromes with a high mortality rate. The administration of adipose-derived mesenchymal stem cells (ADMSCs) has been tested as a possible treatment method for AKI. The long-term evaluation of AKI induced by ischemia/reperfusion (IR) and the probable renal protection of ADMSCs are limited. In this study we have established a rat AKI model induced by IR and investigated the possible protective effects of ADMSCs. Adult Sprague-Dawley (SD) rats were divided into three groups (n = 6/each group)...
July 8, 2017: Clinical and Experimental Pharmacology & Physiology
https://www.readbyqxmd.com/read/28686658/a-hypoxia-response-element-in-the-vegfa-promoter-is-required-for-basal-vegfa-expression-in-skin-and-for-optimal-granulation-tissue-formation-during-wound-healing-in-mice
#14
Domenic Ciarlillo, Christophe Celeste, Peter Carmeliet, Derek Boerboom, Christine Theoret
Hypoxia in skin wounds is thought to contribute to healing through the induction of hypoxia inducible factor-1 (HIF-1). Although HIF-1 can regulate the expression of vascular endothelial growth factor A (Vegfa), whether hypoxia and HIF-1 are required to induce Vegfa expression in the context of wound healing is unknown. To test this hypothesis, we evaluated Vegfa expression and wound healing in mutant mice that lack a functional HIF-1 binding site in the Vegfa promoter. Full-thickness excisional wounds were made using a biopsy punch, left to heal by second intention, and granulation tissue isolated on a time course during healing...
2017: PloS One
https://www.readbyqxmd.com/read/28650670/the-sdf1-a-g-gene-variant-a-susceptibility-variant-for-myocardial-infarction
#15
Yaser Mansoori, Abdolreza Daraei, Zahra Zendebad, Farzan Madadizadeh, Behnam Mansoori, Mohammad Mehdi Naghizadeh, Farzaneh Darbeheshti
BACKGROUND: Although environmental factors play an important role in susceptibility to myocardial infarction (MI), genetic determinants also provide a significant contribution. This study aimed to determine whether or not MI susceptibility is influenced by the SDF1-rs1801157A/G and HHEX-rs1111875 A/G polymorphisms in an Iranian population. METHODS: A total of 120 patients with MI and 120 healthy controls were enrolled. Blood samples were collected from all the participants for genomic DNA extraction and testing...
August 2017: Genetic Testing and Molecular Biomarkers
https://www.readbyqxmd.com/read/28621237/role-of-cxcr4-and-sdf1-as-prognostic-factors-for-survival-and-the-association-with-clinicopathology-in-colorectal-cancer-a-systematic-meta-analysis
#16
Yao-Ping Li, Jing Pang, Sheng Gao, Peng-Yu Bai, Wen-da Wang, Pengzhou Kong, Yongping Cui
C-X-C chemokine receptor type 4 and stromal cell-derived factor-1 were proven to play important roles in several types of cancer and in many biological processes connected with tumor growth, invasion, angiogenesis, and metastasis. However, the clinical significance of C-X-C chemokine receptor type 4 and stromal cell-derived factor-1 expression in colorectal cancer remains inaccurate. The purpose of this systematic meta-analysis is to investigate the role of C-X-C chemokine receptor type 4 and stromal cell-derived factor-1 as prognostic factors for survival and the association between C-X-C chemokine receptor type 4/ stromal cell-derived factor-1 and clinicopathology in colorectal cancer...
June 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28618253/hypoxia-inducible-factor-1%C3%AE-signaling-promotes-repair-of-the-alveolar-epithelium-after-acute-lung-injury
#17
Jazalle McClendon, Nicole L Jansing, Elizabeth F Redente, Aneta Gandjeva, Yoko Ito, Sean P Colgan, Aftab Ahmad, David W H Riches, Harold A Chapman, Robert J Mason, Rubin M Tuder, Rachel L Zemans
During the acute respiratory distress syndrome, epithelial cells, primarily alveolar type (AT) I cells, die and slough off, resulting in enhanced permeability. ATII cells proliferate and spread onto the denuded basement membrane to reseal the barrier. Repair of the alveolar epithelium is critical for clinical recovery; however, mechanisms underlying ATII cell proliferation and spreading are not well understood. We hypothesized that hypoxia-inducible factor (HIF)1α promotes proliferation and spreading of ATII cells during repair after lung injury...
August 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28571570/immunological-and-virological-characterization-of-hiv-1-viremia-controllers-in-the-north-region-of-brazil
#18
Samara Tatielle M Gomes, Érica R Gomes, Mike B Dos Santos, Sandra S Lima, Maria Alice F Queiroz, Luiz Fernando A Machado, Izaura M V Cayres-Vallinoto, Antonio Carlos R Vallinoto, Marluísa de O Guimarães Ishak, Ricardo Ishak
BACKGROUND: A rare phenotype of clinical non-progressors to AIDS is not well understood and the new protocol for universal treatment, may block the understanding of viral control thus it is crucial to define this controversial group. METHODS: A cohort of 30 persons followed a criteria for viremia control groups 1 (VC1; n = 2) and 2 (VC2; n = 7) and non-viral controllers (NC; n = 21) including number of years of diagnosis, LTCD4(+), LTCD8(+) counts, plasma viral load and the absence of ART; 241 uninfected control persons were matched to age and sex...
June 1, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28535157/a-meta-analysis-of-cxcl12-expression-for-cancer-prognosis
#19
REVIEW
Harsh Samarendra, Keaton Jones, Tatjana Petrinic, Michael A Silva, Srikanth Reddy, Zahir Soonawalla, Alex Gordon-Weeks
BACKGROUND: CXCL12 (SDF1) is reported to promote cancer progression in several preclinical models and this is corroborated by the analysis of human tissue specimens. However, the relationship between CXCL12 expression and cancer survival has not been systematically assessed. METHODS: We conducted a systematic review and meta-analysis of studies that evaluated the association between CXCL12 expression and cancer survival. RESULTS: Thirty-eight studies inclusive of 5807 patients were included in the analysis of overall, recurrence-free or cancer-specific survival, the majority of which were retrospective...
June 27, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28526501/hypoxia-modulates-cell-migration-and-proliferation-in-placenta-derived-mesenchymal-stem-cells
#20
Li Li, Prashant Kumar Jaiswal, Georges Makhoul, Rishi Jurakhan, Kaviyanka Selvasandran, Khalid Ridwan, Renzo Cecere
OBJECTIVES: For more than a decade, stem cells isolated from different tissues have been evaluated in cell therapy. Among them, the human bone marrow-derived mesenchymal stem cells (hBM-MSCs) were investigated extensively in the treatment of myocardial infarction. Recently, the human placenta-derived mesenchymal stem cells (hPD-MSCs), which are readily available from a biological waste, appear to be a viable alternative to hBM-MSCs. METHODS: C-X-C chemokine receptor type 4 (CXCR4) gene expression and localization were detected and validated in hPD-MSCs and hBM-MSCs via polymerase chain reaction and immunofluorescence...
August 2017: Journal of Thoracic and Cardiovascular Surgery
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