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Upcin B, Henke E, Kleefeldt F, Hoffmann H, Rosenwald A, Irmak-Sav S, Aktas HB, Rückschloß U, Ergün S. Contribution of Adventitia-Derived Stem and Progenitor Cells to New Vessel Formation in Tumors. Cells 2021; 10:cells10071719. [PMID: 34359889 PMCID: PMC8304670 DOI: 10.3390/cells10071719] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 07/01/2021] [Accepted: 07/03/2021] [Indexed: 11/22/2022] Open
Abstract
Blocking tumor vascularization has not yet come to fruition to the extent it was hoped for, as angiogenesis inhibitors have shown only partial success in the clinic. We hypothesized that under-appreciated vascular wall-resident stem and progenitor cells (VW-SPCs) might be involved in tumor vascularization and influence effectiveness of anti-angiogenic therapy. Indeed, in patient samples, we observed that vascular adventitia-resident CD34+ VW-SPCs are recruited to tumors in situ from co-opted vessels. To elucidate this in detail, we established an ex vivo model using concomitant embedding of multi-cellular tumor spheroids (MCTS) and mouse aortic rings (ARs) into collagen gels, similar to the so-called aortic ring assay (ARA). Moreover, ARA was modified by removing the ARs’ adventitia that harbors VW-SPCs. Thus, this model enabled distinguishing the contribution of VW-SPCs from that of mature endothelial cells (ECs) to new vessel formation. Our results show that the formation of capillary-like sprouts is considerably delayed, and their number and network formation were significantly reduced by removing the adventitia. Substituting iPSC-derived neural spheroids for MCTS resulted in distinct sprouting patterns that were also strongly influenced by the presence or absence of VW-SPCs, also underlying the involvement of these cells in non-pathological vascularization. Our data suggest that more comprehensive approaches are needed in order to block all of the mechanisms contributing to tumor vascularization.
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Affiliation(s)
- Berin Upcin
- Institute of Anatomy and Cell Biology, Julius-Maximilians-University, 97070 Würzburg, Germany; (B.U.); (E.H.); (F.K.); (H.H.); (U.R.)
| | - Erik Henke
- Institute of Anatomy and Cell Biology, Julius-Maximilians-University, 97070 Würzburg, Germany; (B.U.); (E.H.); (F.K.); (H.H.); (U.R.)
| | - Florian Kleefeldt
- Institute of Anatomy and Cell Biology, Julius-Maximilians-University, 97070 Würzburg, Germany; (B.U.); (E.H.); (F.K.); (H.H.); (U.R.)
| | - Helene Hoffmann
- Institute of Anatomy and Cell Biology, Julius-Maximilians-University, 97070 Würzburg, Germany; (B.U.); (E.H.); (F.K.); (H.H.); (U.R.)
| | - Andreas Rosenwald
- Institute of Pathology, Julius-Maximilians-University, 97070 Würzburg, Germany;
| | - Ster Irmak-Sav
- Faculty of Health Sciences, İstanbul Bilgi University, 34060 Istanbul, Turkey;
| | - Huseyin Bertal Aktas
- Department of Medicine, Hematology, Brigham and Women’s Hospital, Boston, MA 02115, USA;
| | - Uwe Rückschloß
- Institute of Anatomy and Cell Biology, Julius-Maximilians-University, 97070 Würzburg, Germany; (B.U.); (E.H.); (F.K.); (H.H.); (U.R.)
| | - Süleyman Ergün
- Institute of Anatomy and Cell Biology, Julius-Maximilians-University, 97070 Würzburg, Germany; (B.U.); (E.H.); (F.K.); (H.H.); (U.R.)
- Correspondence: ; Tel.: +49-931-31-82701
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Santosa SM, Guo K, Yamakawa M, Ivakhnitskaia E, Chawla N, Nguyen T, Han KY, Ema M, Rosenblatt MI, Chang JH, Azar DT. Simultaneous fluorescence imaging of distinct nerve and blood vessel patterns in dual Thy1-YFP and Flt1-DsRed transgenic mice. Angiogenesis 2020; 23:459-477. [PMID: 32372335 DOI: 10.1007/s10456-020-09724-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 04/23/2020] [Indexed: 02/08/2023]
Abstract
Blood vessels and nerve tissues are critical to the development and functionality of many vital organs. However, little is currently known about their interdependency during development and after injury. In this study, dual fluorescence transgenic reporter mice were utilized to observe blood vessels and nervous tissues in organs postnatally. Thy1-YFP and Flt1-DsRed (TYFD) mice were interbred to achieve dual fluorescence in the offspring, with Thy1-YFP yellow fluorescence expressed primarily in nerves, and Flt1-DsRed fluorescence expressed selectively in blood vessels. Using this dual fluorescent mouse strain, we were able to visualize the networks of nervous and vascular tissue simultaneously in various organ systems both in the physiological state and after injury. Using ex vivo high-resolution imaging in this dual fluorescent strain, we characterized the organizational patterns of both nervous and vascular systems in a diverse set of organs and tissues. In the cornea, we also observed the dynamic patterns of nerve and blood vessel networks following epithelial debridement injury. These findings highlight the versatility of this dual fluorescent strain for characterizing the relationship between nerve and blood vessel growth and organization.
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Affiliation(s)
- Samuel M Santosa
- Department of Ophthalmology and Visual Sciences, Illinois Eye and Ear Infirmary, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Kai Guo
- Department of Ophthalmology and Visual Sciences, Illinois Eye and Ear Infirmary, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Michael Yamakawa
- Department of Ophthalmology and Visual Sciences, Illinois Eye and Ear Infirmary, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Evguenia Ivakhnitskaia
- Department of Ophthalmology and Visual Sciences, Illinois Eye and Ear Infirmary, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Neeraj Chawla
- Department of Ophthalmology and Visual Sciences, Illinois Eye and Ear Infirmary, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Tara Nguyen
- Department of Ophthalmology and Visual Sciences, Illinois Eye and Ear Infirmary, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Kyu-Yeon Han
- Department of Ophthalmology and Visual Sciences, Illinois Eye and Ear Infirmary, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Masatsugu Ema
- Department of Stem Cells and Human Disease Models, Shiga University of Medical Science, Seta, Tsukinowa-cho, Otsu, Shiga, Japan
| | - Mark I Rosenblatt
- Department of Ophthalmology and Visual Sciences, Illinois Eye and Ear Infirmary, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Jin-Hong Chang
- Department of Ophthalmology and Visual Sciences, Illinois Eye and Ear Infirmary, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA.
| | - Dimitri T Azar
- Department of Ophthalmology and Visual Sciences, Illinois Eye and Ear Infirmary, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA.
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