Scanning electron microscopy of human islet cilia.
Scanning electron microscopy of human islet cilia.
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人胰岛纤毛的扫描电子显微镜。
DOI:
10.1073/pnas.2302624120
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发表时间:
2023-05-30
影响因子:
11.1
通讯作者:
Hughes, Jing W.
中科院分区:
文献类型:
--
作者:
Polino, Alexander J.;Sviben, Sanja;Melena, Isabella;Piston, David W.;Hughes, Jing W.
Primary cilia are vital cell-surface sensory organelles, but their physical dimensions have eluded characterization due to difficulty in isolating and studying these enigmatic structures, especially in human tissues. In the present study, we use a multi-scale surface scanning approach to enable a 3D architectural study of human primary cilia, the first in pancreatic islets and in any human tissue. Results provide a morphometric basis for understanding ciliary function including signaling capacity, axonemal motility, and cell-cell communication. Human islet primary cilia are vital glucose-regulating organelles whose structure remains uncharacterized. Scanning electron microscopy (SEM) is a useful technique for studying the surface morphology of membrane projections like cilia, but conventional sample preparation does not reveal the submembrane axonemal structure, which holds key implications for ciliary function. To overcome this challenge, we combined SEM with membrane-extraction techniques to examine primary cilia in native human islets. Our data show well-preserved cilia subdomains which demonstrate both expected and unexpected ultrastructural motifs. Morphometric features were quantified when possible, including axonemal length and diameter, microtubule conformations, and chirality. We further describe a ciliary ring, a structure that may be a specialization in human islets. Key findings are correlated with fluorescence microscopy and interpreted in the context of cilia function as a cellular sensor and communications locus in pancreatic islets.
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影响因子:
11.8
作者:
Antoniades, Ioanna;Stylianou, Panayiota;Skourides, Paris A.
通讯作者:
Skourides, Paris A.
DOI:
10.1016/s0022-5320(61)80019-1
发表时间:
1961-01-01
期刊:
JOURNAL OF ULTRASTRUCTURE RESEARCH
影响因子:
--
作者:
BARNES, BG
通讯作者:
BARNES, BG
影响因子:
4
作者:
de Boer P;Giepmans BN
通讯作者:
Giepmans BN
影响因子:
21.3
作者:
Habedanck, R;Stierhof, YD;Nigg, EA
通讯作者:
Nigg, EA
DOI:
10.1083/jcb.97.3.902
发表时间:
1983-09
期刊:
The Journal of cell biology
影响因子:
--
作者:
Hoops HJ;Witman GB
通讯作者:
Witman GB