- Exploring the human mesenchymal stem cell tubule communication network through electron microscopy.
Exploring the human mesenchymal stem cell tubule communication network through electron microscopy.
Ultrastructural pathology (2014-10-01)
Sabrina Valente, Roberta Rossi, Leonardo Resta, Gianandrea Pasquinelli
PMID25268461
摘要
Cells use several mechanisms to transfer information to other cells. In this study, we describe micro/nanotubular connections and exosome-like tubule fragments in multipotent mesenchymal stem cells (MSCs) from human arteries. Scanning and transmission electron microscopy allowed characterization of sinusoidal microtubular projections (700 nm average size, 200 µm average length, with bulging mitochondria and actin microfilaments); short, uniform, variously shaped nanotubular projections (100 nm, bidirectional communication); and tubule fragments (50 nm). This is the first study demonstrating that MSCs from human arteries constitutively interact through an articulate and dynamic tubule network allowing long-range cell to cell communication.
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活性炭 Norit®, Norit® GAC 1240W, from coal, for potable water processing, steam activated, granular
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酒精, purum, fine spirit, denaturated with 4.8% methanol, F25 METHYL1, ~96% (based on denaturant-free substance)
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碳纳米纤维, graphitized, platelets(conical), >98% carbon basis, D × L 100 nm × 20-200 μm
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活性炭 Norit®, Norit® SX ultra, from peat, corresponds U.S. Food chemicals codex (3rd Ed.), steam activated and acid washed, highly purified, powder
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碳纳米纤维, pyrolitically stripped, platelets(conical), >98% carbon basis, D × L 100 nm × 20-200 μm
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活性炭 Norit®, Norit® SX2, powder, from peat, multi-purpose activated charcoal, steam activated and acid washed
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石墨化碳, nanopowder, graphitized, less than 250 ppm Al, Ti, Fe, Ni, Cu, and Zn combined
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酒精, purum, absolute ethanol, denaturated with 2% 2-butanone, A15 MEK1, ≥99.8% (based on denaturant-free substance)