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Shimizu D, Miura A, Mori M. The perspective for next-generation lung replacement therapies: functional whole lung generation by blastocyst complementation. Curr Opin Organ Transplant 2024; 29:340-348. [PMID: 39150364 DOI: 10.1097/mot.0000000000001169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/17/2024]
Abstract
PURPOSE OF REVIEW Blastocyst complementation represents a promising frontier in next-generation lung replacement therapies. This review aims to elucidate the future prospects of lung blastocyst complementation within clinical settings, summarizing the latest studies on generating functional lungs through this technique. It also explores and discusses host animal selection relevant to interspecific chimera formation, a challenge integral to creating functional human lungs via blastocyst complementation. RECENT FINDINGS Various gene mutations have been utilized to create vacant lung niches, enhancing the efficacy of donor cell contribution to the complemented lungs in rodent models. By controlling the lineage to induce gene mutations, chimerism in both the lung epithelium and mesenchyme has been improved. Interspecific blastocyst complementation underscores the complexity of developmental programs across species, with several genes identified that enhance chimera formation between humans and other mammals. SUMMARY While functional lungs have been generated via intraspecies blastocyst complementation, the generation of functional interspecific lungs remains unrealized. Addressing the challenges of controlling the host lung niche and selecting host animals relevant to interspecific barriers between donor human and host cells is critical to enabling the generation of functional humanized or entire human lungs in large animals.
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Affiliation(s)
- Dai Shimizu
- Columbia Center for Human Development and Division of Pulmonary, Allergy, Critical Care, Department of Medicine, Columbia University Medical Center, New York, New York, USA
- Department of Thoracic, Breast and Endocrinological Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Akihiro Miura
- Columbia Center for Human Development and Division of Pulmonary, Allergy, Critical Care, Department of Medicine, Columbia University Medical Center, New York, New York, USA
- Department of Thoracic, Breast and Endocrinological Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Munemasa Mori
- Columbia Center for Human Development and Division of Pulmonary, Allergy, Critical Care, Department of Medicine, Columbia University Medical Center, New York, New York, USA
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Mori M, Cardoso WV. Can a Rat Breathe through a Mouse's Lung? Am J Respir Crit Care Med 2024; 210:133-134. [PMID: 38701370 PMCID: PMC11273309 DOI: 10.1164/rccm.202404-0706ed] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2024] [Accepted: 05/02/2024] [Indexed: 05/05/2024] Open
Affiliation(s)
- Munemasa Mori
- Department of Medicine Columbia University Irving Medical Center New York, New York
| | - Wellington V Cardoso
- Department of Medicine
- Department of Genetics and Development Columbia University Irving Medical Center New York, New York
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Tanaka J, Miura A, Shimamura Y, Hwang Y, Shimizu D, Kondo Y, Sawada A, Sarmah H, Ninish Z, Mishima K, Mori M. Generation of salivary glands derived from pluripotent stem cells via conditional blastocyst complementation. Cell Rep 2024; 43:114340. [PMID: 38865239 DOI: 10.1016/j.celrep.2024.114340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 04/25/2024] [Accepted: 05/23/2024] [Indexed: 06/14/2024] Open
Abstract
Whole salivary gland generation and transplantation offer potential therapies for salivary gland dysfunction. However, the specific lineage required to engineer complete salivary glands has remained elusive. In this study, we identify the Foxa2 lineage as a critical lineage for salivary gland development through conditional blastocyst complementation (CBC). Foxa2 lineage marking begins at the boundary between the endodermal and ectodermal regions of the oral epithelium before the formation of the primordial salivary gland, thereby labeling the entire gland. Ablation of Fgfr2 within the Foxa2 lineage in mice leads to salivary gland agenesis. We reversed this phenotype by injecting donor pluripotent stem cells into the mouse blastocysts, resulting in mice that survived to adulthood with salivary glands of normal size, comparable to those of their littermate controls. These findings demonstrate that CBC-based salivary gland regeneration serves as a foundational experimental approach for future advanced cell-based therapies.
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Affiliation(s)
- Junichi Tanaka
- Columbia Center for Human Development and Division of Pulmonary, Allergy, Critical Care, Department of Medicine, Columbia University Medical Center, New York, NY 10032, USA; Division of Pathology, Department of Oral Diagnostic Sciences, Showa University School of Dentistry, Tokyo 142-8555, Japan.
| | - Akihiro Miura
- Columbia Center for Human Development and Division of Pulmonary, Allergy, Critical Care, Department of Medicine, Columbia University Medical Center, New York, NY 10032, USA
| | - Yuko Shimamura
- Columbia Center for Human Development and Division of Pulmonary, Allergy, Critical Care, Department of Medicine, Columbia University Medical Center, New York, NY 10032, USA
| | - Youngmin Hwang
- Columbia Center for Human Development and Division of Pulmonary, Allergy, Critical Care, Department of Medicine, Columbia University Medical Center, New York, NY 10032, USA
| | - Dai Shimizu
- Columbia Center for Human Development and Division of Pulmonary, Allergy, Critical Care, Department of Medicine, Columbia University Medical Center, New York, NY 10032, USA
| | - Yuri Kondo
- Columbia Center for Human Development and Division of Pulmonary, Allergy, Critical Care, Department of Medicine, Columbia University Medical Center, New York, NY 10032, USA
| | - Anri Sawada
- Columbia Center for Human Development and Division of Pulmonary, Allergy, Critical Care, Department of Medicine, Columbia University Medical Center, New York, NY 10032, USA
| | - Hemanta Sarmah
- Columbia Stem Cell Initiative, Stem Cell Core, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Zurab Ninish
- Columbia Center for Human Development and Division of Pulmonary, Allergy, Critical Care, Department of Medicine, Columbia University Medical Center, New York, NY 10032, USA
| | - Kenji Mishima
- Division of Pathology, Department of Oral Diagnostic Sciences, Showa University School of Dentistry, Tokyo 142-8555, Japan
| | - Munemasa Mori
- Columbia Center for Human Development and Division of Pulmonary, Allergy, Critical Care, Department of Medicine, Columbia University Medical Center, New York, NY 10032, USA.
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Tanaka J, Kondo Y, Sakurai M, Sawada A, Hwang Y, Miura A, Shimamura Y, Shimizu D, Hu Y, Sarmah H, Ninish Z, Cai J, Wu J, Mori M. Ephrin Forward Signaling Controls Interspecies Cell Competition in Pluripotent Stem Cells. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.06.02.597057. [PMID: 38895424 PMCID: PMC11185521 DOI: 10.1101/2024.06.02.597057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/21/2024]
Abstract
In the animal kingdom, evolutionarily conserved mechanisms known as cell competition eliminate unfit cells during development. Interestingly, cell competition also leads to apoptosis of donor cells upon direct contact with host cells from a different species during interspecies chimera formation. The mechanisms underlying how host animal cells recognize and transmit cell death signals to adjacent xenogeneic human cells remain incompletely understood. In this study, we developed an interspecies cell contact reporter system to dissect the mechanisms underlying competitive interactions between mouse and human pluripotent stem cells (PSCs). Through single-cell RNA-seq analyses, we discovered that Ephrin A ligands in mouse cells play a crucial role in signaling cell death to adjacent human cells that express EPHA receptors during interspecies PSC co-culture. We also demonstrated that blocking the Ephrin A-EPHA receptor interaction pharmacologically, and inhibiting Ephrin forward signaling genetically in the mouse cells, enhances the survival of human PSCs and promotes chimera formation both in vitro and in vivo . Our findings elucidate key mechanisms of interspecies PSC competition during early embryogenesis and open new avenues for generating humanized tissues or organs in animals, potentially revolutionizing regenerative medicine.
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Basil MC, Alysandratos KD, Kotton DN, Morrisey EE. Lung repair and regeneration: Advanced models and insights into human disease. Cell Stem Cell 2024; 31:439-454. [PMID: 38492572 PMCID: PMC11070171 DOI: 10.1016/j.stem.2024.02.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 02/07/2024] [Accepted: 02/22/2024] [Indexed: 03/18/2024]
Abstract
The respiratory system acts as both the primary site of gas exchange and an important sensor and barrier to the external environment. The increase in incidences of respiratory disease over the past decades has highlighted the importance of developing improved therapeutic approaches. This review will summarize recent research on the cellular complexity of the mammalian respiratory system with a focus on gas exchange and immunological defense functions of the lung. Different models of repair and regeneration will be discussed to help interpret human and animal data and spur the investigation of models and assays for future drug development.
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Affiliation(s)
- Maria C Basil
- Department of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; Penn, Children's Hospital of Philadelphia (CHOP) Lung Biology Institute, University of Pennsylvania, Philadelphia, PA 19104, USA.
| | - Konstantinos-Dionysios Alysandratos
- Center for Regenerative Medicine, Boston University and Boston Medical Center, Boston, MA 02118, USA; The Pulmonary Center and Department of Medicine, Boston University and Boston Medical Center, Boston, MA 02118, USA.
| | - Darrell N Kotton
- Center for Regenerative Medicine, Boston University and Boston Medical Center, Boston, MA 02118, USA; The Pulmonary Center and Department of Medicine, Boston University and Boston Medical Center, Boston, MA 02118, USA.
| | - Edward E Morrisey
- Department of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; Department of Cell and Developmental Biology, University of Pennsylvania, Philadelphia, PA 19104, USA; Penn, Children's Hospital of Philadelphia (CHOP) Lung Biology Institute, University of Pennsylvania, Philadelphia, PA 19104, USA.
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Blake MJ, Steer CJ. Chimeric Livers: Interspecies Blastocyst Complementation and Xenotransplantation for End-Stage Liver Disease. Hepat Med 2024; 16:11-29. [PMID: 38379783 PMCID: PMC10878318 DOI: 10.2147/hmer.s440697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Accepted: 02/10/2024] [Indexed: 02/22/2024] Open
Abstract
Orthotopic liver transplantation (OLT) currently serves as the sole definitive treatment for thousands of patients suffering from end-stage liver disease; and the existing supply of donor livers for OLT is drastically outpaced by the increasing demand. To alleviate this significant gap in treatment, several experimental approaches have been devised with the aim of either offering interim support to patients waiting on the transplant list or bioengineering complete livers for OLT by infusing them with fresh hepatic cells. Recently, interspecies blastocyst complementation has emerged as a promising method for generating complete organs in utero over a short timeframe. When coupled with gene editing technology, it has brought about a potentially revolutionary transformation in regenerative medicine. Blastocyst complementation harbors notable potential for generating complete human livers in large animals, which could be used for xenotransplantation in humans, addressing the scarcity of livers for OLT. Nevertheless, substantial experimental and ethical challenges still need to be overcome to produce human livers in larger domestic animals like pigs. This review compiles the current understanding of interspecies blastocyst complementation and outlines future possibilities for liver xenotransplantation in humans.
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Affiliation(s)
- Madelyn J Blake
- Department of Medicine, University of Minnesota Medical School, Minneapolis, MN, USA
| | - Clifford J Steer
- Departments of Medicine, and Genetics, Cell Biology and Development, University of Minnesota Medical School, Minneapolis, MN, USA
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Tanaka J, Miura A, Shimamura Y, Hwang Y, Shimizu D, Kondo Y, Sawada A, Sarmah H, Ninish Z, Mishima K, Mori M. Generation of salivary glands derived from pluripotent stem cells via conditional blastocyst complementation. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.11.13.566845. [PMID: 38014349 PMCID: PMC10680620 DOI: 10.1101/2023.11.13.566845] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
Various patients suffer from dry mouth due to salivary gland dysfunction. Whole salivary gland generation and transplantation is a potential therapy to resolve this issue. However, the lineage permissible to design the entire salivary gland generation has been enigmatic. Here, we discovered Foxa2 as a lineage critical for generating a salivary gland via conditional blastocyst complementation (CBC). Foxa2 linage, but not Shh nor Pitx2, initiated to label between the boundary region of the endodermal and the ectodermal oral mucosa before primordial salivary gland formation, resulting in marking the entire salivary gland. The salivary gland was agenesis by depleting Fgfr2 under the Foxa2 lineage in the mice. We rescued this phenotype by injecting donor pluripotent stem cells into the mouse blastocysts. Those mice survived until adulthood with normal salivary glands compatible in size compared with littermate controls. These results indicated that CBC-based salivary gland generation is promising for next-generation cell-based therapy.
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