Modeling stem cell nucleus mechanics using confocal microscopy.
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| Title: | Modeling stem cell nucleus mechanics using confocal microscopy. |
|---|---|
| Authors: | Kennedy, Zeke1 (AUTHOR), Newberg, Joshua1 (AUTHOR), Goelzer, Matthew1 (AUTHOR), Judex, Stefan2 (AUTHOR), Fitzpatrick, Clare K.1 (AUTHOR), Uzer, Gunes1 (AUTHOR) gunesuzer@boisestate.edu |
| Source: | Biomechanics & Modeling in Mechanobiology. Dec2021, Vol. 20 Issue 6, p2361-2372. 12p. |
| Subjects: | Confocal microscopy, Cellular mechanics, Finite element method, Stem cells, Cell nuclei, Atomic force microscopy |
| Abstract: | Nuclear mechanics is emerging as a key component of stem cell function and differentiation. While changes in nuclear structure can be visually imaged with confocal microscopy, mechanical characterization of the nucleus and its sub-cellular components require specialized testing equipment. A computational model permitting cell-specific mechanical information directly from confocal and atomic force microscopy of cell nuclei would be of great value. Here, we developed a computational framework for generating finite element models of isolated cell nuclei from multiple confocal microscopy scans and simple atomic force microscopy (AFM) tests. Confocal imaging stacks of isolated mesenchymal stem cells were converted into finite element models and siRNA-mediated Lamin A/C depletion isolated chromatin and Lamin A/C structures. Using AFM-measured experimental stiffness values, a set of conversion factors were determined for both chromatin and Lamin A/C to map the voxel intensity of the original images to the element stiffness, allowing the prediction of nuclear stiffness in an additional set of other nuclei. The developed computational framework will identify the contribution of a multitude of sub-nuclear structures and predict global nuclear stiffness of multiple nuclei based on simple nuclear isolation protocols, confocal images and AFM tests. [ABSTRACT FROM AUTHOR] |
| Copyright of Biomechanics & Modeling in Mechanobiology is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 153606016 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Modeling stem cell nucleus mechanics using confocal microscopy. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Kennedy%2C+Zeke%22">Kennedy, Zeke</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Newberg%2C+Joshua%22">Newberg, Joshua</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Goelzer%2C+Matthew%22">Goelzer, Matthew</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Judex%2C+Stefan%22">Judex, Stefan</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Fitzpatrick%2C+Clare+K%2E%22">Fitzpatrick, Clare K.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Uzer%2C+Gunes%22">Uzer, Gunes</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> gunesuzer@boisestate.edu</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Biomechanics+%26+Modeling+in+Mechanobiology%22">Biomechanics & Modeling in Mechanobiology</searchLink>. Dec2021, Vol. 20 Issue 6, p2361-2372. 12p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Confocal+microscopy%22">Confocal microscopy</searchLink><br /><searchLink fieldCode="DE" term="%22Cellular+mechanics%22">Cellular mechanics</searchLink><br /><searchLink fieldCode="DE" term="%22Finite+element+method%22">Finite element method</searchLink><br /><searchLink fieldCode="DE" term="%22Stem+cells%22">Stem cells</searchLink><br /><searchLink fieldCode="DE" term="%22Cell+nuclei%22">Cell nuclei</searchLink><br /><searchLink fieldCode="DE" term="%22Atomic+force+microscopy%22">Atomic force microscopy</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Nuclear mechanics is emerging as a key component of stem cell function and differentiation. While changes in nuclear structure can be visually imaged with confocal microscopy, mechanical characterization of the nucleus and its sub-cellular components require specialized testing equipment. A computational model permitting cell-specific mechanical information directly from confocal and atomic force microscopy of cell nuclei would be of great value. Here, we developed a computational framework for generating finite element models of isolated cell nuclei from multiple confocal microscopy scans and simple atomic force microscopy (AFM) tests. Confocal imaging stacks of isolated mesenchymal stem cells were converted into finite element models and siRNA-mediated Lamin A/C depletion isolated chromatin and Lamin A/C structures. Using AFM-measured experimental stiffness values, a set of conversion factors were determined for both chromatin and Lamin A/C to map the voxel intensity of the original images to the element stiffness, allowing the prediction of nuclear stiffness in an additional set of other nuclei. The developed computational framework will identify the contribution of a multitude of sub-nuclear structures and predict global nuclear stiffness of multiple nuclei based on simple nuclear isolation protocols, confocal images and AFM tests. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Biomechanics & Modeling in Mechanobiology is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1007/s10237-021-01513-w Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 12 StartPage: 2361 Subjects: – SubjectFull: Confocal microscopy Type: general – SubjectFull: Cellular mechanics Type: general – SubjectFull: Finite element method Type: general – SubjectFull: Stem cells Type: general – SubjectFull: Cell nuclei Type: general – SubjectFull: Atomic force microscopy Type: general Titles: – TitleFull: Modeling stem cell nucleus mechanics using confocal microscopy. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Kennedy, Zeke – PersonEntity: Name: NameFull: Newberg, Joshua – PersonEntity: Name: NameFull: Goelzer, Matthew – PersonEntity: Name: NameFull: Judex, Stefan – PersonEntity: Name: NameFull: Fitzpatrick, Clare K. – PersonEntity: Name: NameFull: Uzer, Gunes IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 12 Text: Dec2021 Type: published Y: 2021 Identifiers: – Type: issn-print Value: 16177959 Numbering: – Type: volume Value: 20 – Type: issue Value: 6 Titles: – TitleFull: Biomechanics & Modeling in Mechanobiology Type: main |
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