scholarly journals Extent and time course of morphological changes of bone marrow induced by granulocyte‐colony stimulating factor as assessed by magnetic resonance imaging of healthy blood stem cell donors

2001 ◽  
Vol 14 (2) ◽  
pp. 141-146 ◽  
Author(s):  
Carsten Altehoefer ◽  
Hartmut Bertz ◽  
Nadir A. Ghanem ◽  
Mathias Langer
Keyword(s):  
Magnetic Resonance Imaging ◽  
Bone Marrow ◽  
Stem Cell ◽  
Magnetic Resonance ◽  
Time Course ◽  
Morphological Changes ◽  
Granulocyte Colony Stimulating Factor ◽  
Colony Stimulating Factor ◽  
Resonance Imaging ◽  
Stimulating Factor

scholarly journals Monitoring bone marrow-originated mesenchymal stem cell traffic to myocardial infarction sites using magnetic resonance imaging

2011 ◽  
Vol 65 (5) ◽  
pp. 1430-1436 ◽  
Author(s):  
Yidong Yang ◽  
Autumn Schumacher ◽  
Yuhui Yang ◽  
Jimei Liu ◽  
Xingming Shi ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Myocardial Infarction ◽  
Bone Marrow ◽  
Stem Cell ◽  
Magnetic Resonance ◽  
Mesenchymal Stem Cell ◽  
Resonance Imaging

scholarly journals Stem Cell Factor in Combination with Granulocyte Colony-Stimulating Factor reduces Cerebral Capillary Thrombosis in a Mouse Model of CADASIL

2018 ◽  
Vol 27 (4) ◽  
pp. 637-647 ◽  
Author(s):  
Suning Ping ◽  
Xuecheng Qiu ◽  
Maria E Gonzalez-Toledo ◽  
Xiaoyun Liu ◽  
Li-Ru Zhao
Keyword(s):  
Bone Marrow ◽  
Stem Cell ◽  
Mouse Model ◽  
Stem Cell Factor ◽  
Granulocyte Colony Stimulating Factor ◽  
Cerebral Thrombosis ◽  
Colony Stimulating Factor ◽  
Cerebral Capillaries ◽  
Cerebral Capillary ◽  
Stimulating Factor

Cerebral autosomal dominant arteriopathy with subcortical infarcts and leucoencephalopathy (CADASIL) is a cerebral small vascular disease caused by NOTCH3 mutation-induced vascular smooth muscle cell (VSMC) degeneration, leading to ischemic stroke and vascular dementia. Our previous study has demonstrated that repeated treatment with a combination of stem cell factor (SCF) and granulocyte colony-stimulating factor (G-CSF) reduces VSMC degeneration and cerebral endothelial cell (EC) damage and improves cognitive function in a mouse model of CADASIL (TgNotch3R90C). This study aimed to determine whether cerebral thrombosis occurs in TgNotch3R90C mice and whether repeated SCF+G-CSF treatment reduces cerebral thrombosis in TgNotch3R90C mice. Using the approaches of bone marrow transplantation to track bone marrow-derived cells and confocal imaging, we observed bone marrow-derived blood cell occlusion in cerebral small vessels and capillaries (thrombosis). Most thrombosis occurred in the cerebral capillaries (93% of total occluded vessels), and the thrombosis showed an increased frequency in the regions of capillary bifurcation. Degenerated capillary ECs were seen inside and surrounding the thrombosis, and the bone marrow-derived ECs were also found next to the thrombosis. IgG extravasation was seen in and next to the areas of thrombosis. SCF+G-CSF treatment significantly reduced cerebral capillary thrombosis and IgG extravasation. These data suggest that the EC damage is associated with thrombosis and blood–brain barrier leakage in the cerebral capillaries under the CADASIL-like condition, whereas SCF+G-CSF treatment diminishes these pathological alterations. This study provides new insight into the involvement of cerebral capillary thrombosis in the development of CADASIL and potential approaches to reduce the thrombosis, which may restrict the pathological progression of CADASIL.

Interleukin-1β Promotes the Expression of CD34 and Granulocyte Colony-Stimulating Factor-Receptor in Adult Dermal Fibroblasts

Blood ◽  
2011 ◽  
Vol 118 (21) ◽  
pp. 4815-4815
Author(s):  
Haruko Tashiro ◽  
Ryosuke Shirasaki ◽  
Yoko Oka ◽  
Tadashi Yamamoto ◽  
Nobu Akiyama ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Stem Cell ◽  
Myelogenous Leukemia ◽  
Granulocyte Colony Stimulating Factor ◽  
Colony Stimulating Factor ◽  
Hematopoietic Stem ◽  
Single Clone ◽  
Normal Human ◽  
Stimulating Factor

Abstract Abstract 4815 Background and Aims: We reported that acute myelogenous leukemia blasts and chronic myelogenous leukemia cells converted to stromal myofibroblasts to create an environment for the proliferation of leukemic cells in vitro and also in a non-obese diabetes/ severe combined immunodeficiency (NOD/SCID) murine bone-marrow in vivo. In normal hematopoiesis, hematopoietic stem cell (HSC) and stromal immature mesenchymal stem cell (MSC) are speculated to have a cross-talk, and some reports indicate that the HSC generates MSC, and also a specific fraction of MSC shares similar molecular expressions to that of HSC. We made a hypothesis that HSC might be generated from MSC. To make clear this issue, expression cloning was performed to isolate a molecule that stimulated bone-marrow stromal myofibroblasts to express hematopoietic stem cell marker, CD34. And, we also observed the effect of the isolated molecule to an adult human dermal fibroblast (HDF). Materials and Methods: cDNA-expression library was constructed using PHA-P-stimulated normal human blood lymphocytes, and the prepared plasmids were transfected to COS7 cells. After 3 days of culture, supernatants were added to the normal human bone-marrow-derived myofibroblasts (final 10%), and cells were further cultured for one week. RNA was extracted from the cultured myofibroblasts, and cDNA was synthesized. Positive clones were selected on CD34-expression with reverse transcription-polymerase chain reaction, and a single clone was isolated. The purified protein from the isolated single clone was added to HDF-culture, and the morphological changes and the expression of specific hematopoiesis-related proteins were analyzed. Results and Discussion: Isolated single clone was human interleukin 1β (IL-1β). When the purified IL-1β protein was added to the bone-marrow-derived myofibroblast cultures, cell growth was increased, and up-regulation of the expression of several hematopoietic specific proteins, including cytokine receptors and transcription factor SCL, was observed. Based on these observations, we determined the effect of IL-1β to HDF. When HDFs were cultured with human IL-1β for 3 weeks, the expression of granulocyte colony-stimulating factor (G-CSF)-receptor, and SCL was increased. When these IL-1β-stimulated cells were cultured in a non-coated dish, cells were floating, and budding of the cells was also observed. When HDF were cultured with IL-1β for 3 weeks, and then G-CSF and erythropoietin were added to the cultures, expression of transcription factor GATA-1 and CEBPA was significantly increased after one week. These observations indicate that IL-1β can stimulate to induce HDF toward hematopoietic cells. Now we determine the precise actions of human IL-1β to HDF using NOD/SCID transplantation model in vivo. Disclosures: No relevant conflicts of interest to declare.

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