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Advanced Biomanufacturing of Neural Organoids from Human Pluripotent Stem Cells- [electronic resource]
Advanced Biomanufacturing of Neural Organoids from Human Pluripotent Stem Cells- [electronic resource]
상세정보
- 자료유형
- 학위논문파일 국외
- 최종처리일시
- 20240214095840
- ISBN
- 9798379695415
- DDC
- 610
- 서명/저자
- Advanced Biomanufacturing of Neural Organoids from Human Pluripotent Stem Cells - [electronic resource]
- 발행사항
- [S.l.]: : The University of Wisconsin - Madison., 2021
- 발행사항
- Ann Arbor : : ProQuest Dissertations & Theses,, 2021
- 형태사항
- 1 online resource(89 p.)
- 주기사항
- Source: Dissertations Abstracts International, Volume: 84-12, Section: B.
- 주기사항
- Advisor: Ashton, Randolph S. .
- 학위논문주기
- Thesis (Ph.D.)--The University of Wisconsin - Madison, 2021.
- 사용제한주기
- This item must not be sold to any third party vendors.
- 초록/해제
- 요약Organoids derived from human pluripotent stem cells (hPSCs) have become widely explored in vitro for tissue modeling and developmental studies. Neurally differentiating hPSCs possess the ability to result in formation of polarized areas of neural stem cells (NSCs), known as neural rosettes, which resemble cross-sectional slices of the embryonic neural tube and develop into neural organoids. Current neural organoid derivation protocols mainly rely on spontaneous selforganization of cell aggregates that occurs within 3D spheroids and provide minimal control throughout their formation. This yields neural organoids containing microscale biomimetic cytoarchitectures. However, at the macroscale and as a whole tissue, these organoids commonly develop abnormal morphologies and lack a consistent cellular composition. The current lack of control over in vitro organoid morphogenesis at the micro- to macroscale is a major factor that limits reproducibly of anatomically correct tissues and their ability to serve as optimal in vitro models. Overall, this prevents researchers from using organoid technology at its maximum potential.Here, we have developed a platform and methodology for engineering arrays of microscale neural tissues with biomimetic neural tube morphology and the ability to further expand into neural organoids from different regions of brain and spinal cord. Frist, we use soft lithography and robotic microcontact patterning (R-μCP) to manufacture substrates that are sequentially micropatterned with polymer brushes and further functionalized with various chemistries and peptides. We determined that R-µCP can be deployed to manufacture biocompatible substrates with consistent surface uniformity, sequential patterning precision of ±15-20 µm, and can enable spatiotemporal control over neural organoid morphology.Next, we describe a protocol to bioengineer hPSC-derived NSC tissues with controlled induction of a biomimetic singular rosette cytoarchitecture. Control of the NSC aggregates morphology is provided using R-μCP substrates. Variables such as biochemical factors (e.g., growth factors, signaling inhibition molecules) as well as biophysical parameters (e.g., geometry, hPSCs surface density) were found to be critical for singular rosette induction. The resulting arrays of singular rosette tissues model the cytoarchitecture of a transverse slice of the embryonic neural tube. The Ashton lab previously found that circular patterns of 250 μm diameter could generate forebrain neuroepithelial tissues with cytoarchitectures that are biomimetic to in vivo neural tube slices as characterized by the single polarized expression of N-Cadherin and early neural progenitor marker Pax6. To our knowledge, this is the closest demonstration of a neural tube mimetic in vitro, and it can be the first step into standardizing the formation of neural organoids.Finally, this platform was used to radially expand arrays of spatially isolated, singular forebrain neural rosettes on R-μCP culture substrates. R-μCP substrates were modified in situ to induce radial outgrowth of the rosettes to produce large neural tissue slices. Here, we investigate how temporal changes in substrate biochemistry can be used to control maintenance and proliferation of neural rosettes during their radial outgrowth phase to eventually generate cell phenotypes and morphologies characteristic of human neural tissues. We synthesized and immobilized a variety of potential cell binding molecules on R-μCP substrates to determine which combination are optimal for recapitulating neural tissues expansion and generating uniform neural organoids. We found that a clickable RGD peptide sequence can be used at different concentrations to modify the R-μCP substrates in situ and provide tissue expansion within contained outgrowth areas.The long-term goal is to eventually use this platform to biomanufacture developmentally relevant neural organoids as tissue slices from different regions of central nervous system. Interfacing this platform with induced pluripotent stem cells (iPSCs) and techniques for hPSC gene-editing and patient-specific cellular reprogramming could allow for advanced study of neurodegenerative disease mechanisms and open the door for potentially novel high throughput drug and toxin screening methods. Ultimately, the work presented here will lay the foundation for facilitating a greater understanding of neurogenesis and future neurodegenerative disease prevention and treatment.
- 일반주제명
- Bioengineering.
- 일반주제명
- Biomedical engineering.
- 일반주제명
- Cellular biology.
- 키워드
- Stem cells
- 키워드
- Neural organoids
- 키워드
- Cell binding
- 기타저자
- The University of Wisconsin - Madison Materials Science
- 기본자료저록
- Dissertations Abstracts International. 84-12B.
- 기본자료저록
- Dissertation Abstract International
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■020 ▼a9798379695415
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■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a610
■1001 ▼aAghayeemeibody, Seyyed Alireza.
■24510▼aAdvanced Biomanufacturing of Neural Organoids from Human Pluripotent Stem Cells▼h[electronic resource]
■260 ▼a[S.l.]:▼bThe University of Wisconsin - Madison. ▼c2021
■260 1▼aAnn Arbor :▼bProQuest Dissertations & Theses, ▼c2021
■300 ▼a1 online resource(89 p.)
■500 ▼aSource: Dissertations Abstracts International, Volume: 84-12, Section: B.
■500 ▼aAdvisor: Ashton, Randolph S. .
■5021 ▼aThesis (Ph.D.)--The University of Wisconsin - Madison, 2021.
■506 ▼aThis item must not be sold to any third party vendors.
■520 ▼aOrganoids derived from human pluripotent stem cells (hPSCs) have become widely explored in vitro for tissue modeling and developmental studies. Neurally differentiating hPSCs possess the ability to result in formation of polarized areas of neural stem cells (NSCs), known as neural rosettes, which resemble cross-sectional slices of the embryonic neural tube and develop into neural organoids. Current neural organoid derivation protocols mainly rely on spontaneous selforganization of cell aggregates that occurs within 3D spheroids and provide minimal control throughout their formation. This yields neural organoids containing microscale biomimetic cytoarchitectures. However, at the macroscale and as a whole tissue, these organoids commonly develop abnormal morphologies and lack a consistent cellular composition. The current lack of control over in vitro organoid morphogenesis at the micro- to macroscale is a major factor that limits reproducibly of anatomically correct tissues and their ability to serve as optimal in vitro models. Overall, this prevents researchers from using organoid technology at its maximum potential.Here, we have developed a platform and methodology for engineering arrays of microscale neural tissues with biomimetic neural tube morphology and the ability to further expand into neural organoids from different regions of brain and spinal cord. Frist, we use soft lithography and robotic microcontact patterning (R-μCP) to manufacture substrates that are sequentially micropatterned with polymer brushes and further functionalized with various chemistries and peptides. We determined that R-µCP can be deployed to manufacture biocompatible substrates with consistent surface uniformity, sequential patterning precision of ±15-20 µm, and can enable spatiotemporal control over neural organoid morphology.Next, we describe a protocol to bioengineer hPSC-derived NSC tissues with controlled induction of a biomimetic singular rosette cytoarchitecture. Control of the NSC aggregates morphology is provided using R-μCP substrates. Variables such as biochemical factors (e.g., growth factors, signaling inhibition molecules) as well as biophysical parameters (e.g., geometry, hPSCs surface density) were found to be critical for singular rosette induction. The resulting arrays of singular rosette tissues model the cytoarchitecture of a transverse slice of the embryonic neural tube. The Ashton lab previously found that circular patterns of 250 μm diameter could generate forebrain neuroepithelial tissues with cytoarchitectures that are biomimetic to in vivo neural tube slices as characterized by the single polarized expression of N-Cadherin and early neural progenitor marker Pax6. To our knowledge, this is the closest demonstration of a neural tube mimetic in vitro, and it can be the first step into standardizing the formation of neural organoids.Finally, this platform was used to radially expand arrays of spatially isolated, singular forebrain neural rosettes on R-μCP culture substrates. R-μCP substrates were modified in situ to induce radial outgrowth of the rosettes to produce large neural tissue slices. Here, we investigate how temporal changes in substrate biochemistry can be used to control maintenance and proliferation of neural rosettes during their radial outgrowth phase to eventually generate cell phenotypes and morphologies characteristic of human neural tissues. We synthesized and immobilized a variety of potential cell binding molecules on R-μCP substrates to determine which combination are optimal for recapitulating neural tissues expansion and generating uniform neural organoids. We found that a clickable RGD peptide sequence can be used at different concentrations to modify the R-μCP substrates in situ and provide tissue expansion within contained outgrowth areas.The long-term goal is to eventually use this platform to biomanufacture developmentally relevant neural organoids as tissue slices from different regions of central nervous system. Interfacing this platform with induced pluripotent stem cells (iPSCs) and techniques for hPSC gene-editing and patient-specific cellular reprogramming could allow for advanced study of neurodegenerative disease mechanisms and open the door for potentially novel high throughput drug and toxin screening methods. Ultimately, the work presented here will lay the foundation for facilitating a greater understanding of neurogenesis and future neurodegenerative disease prevention and treatment.
■590 ▼aSchool code: 0262.
■650 4▼aBioengineering.
■650 4▼aBiomedical engineering.
■650 4▼aCellular biology.
■653 ▼aAdvanced biomanufacturing
■653 ▼aStem cells
■653 ▼aNeural organoids
■653 ▼aHuman pluripotent
■653 ▼aCell binding
■690 ▼a0202
■690 ▼a0541
■690 ▼a0379
■71020▼aThe University of Wisconsin - Madison▼bMaterials Science.
■7730 ▼tDissertations Abstracts International▼g84-12B.
■773 ▼tDissertation Abstract International
■790 ▼a0262
■791 ▼aPh.D.
■792 ▼a2021
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T16930945▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
■980 ▼a202402▼f2024


