1
|
Alsultan A, Farge D, Kili S, Forte M, Weiss DJ, Grignon F, Boelens JJ. International Society for Cell and Gene Therapy Clinical Translation Committee recommendations on mesenchymal stromal cells in graft-versus-host disease: easy manufacturing is faced with standardizing and commercialization challenges. Cytotherapy 2024:S1465-3249(24)00713-8. [PMID: 38804990 DOI: 10.1016/j.jcyt.2024.05.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 05/03/2024] [Accepted: 05/03/2024] [Indexed: 05/29/2024]
Abstract
Mesenchymal stromal cells (MSCs) have been used in multiple clinical trials for steroid-refractory moderate-severe (grade II-IV) acute graft-versus-host disease (aGVHD) across the world over the last two decades. Despite very promising results in a variety of trials, it failed to get widespread approval by regulatory agencies such as the U.S. Food and Drug Administration and the European Medicines Agency. What lessons can we learn from this for future studies on MSCs and other cell therapy products? Broad heterogeneity among published trials using MSCs in aGVHD was likely the core problem. We propose a standardized approach in regards to donor-related factors, MSCs-related characteristics, as well as clinical trial design, to limit heterogeneity in trials for aGVHD and to fulfill the requirements of regulatory agencies. This approach may be expanded beyond MSCs to other Cell and Gene therapy products and trials in other diseases.
Collapse
Affiliation(s)
- Abdulrahman Alsultan
- Department of Pediatrics, College of Medicine, King Saud University, Riyadh, Saudi Arabia; Transplantation and Cellular Therapy, MSK Kids, Department of Pediatrics, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Dominique Farge
- Internal Medicine Unit (UF 04): CRMR MATHEC, Autoimmune diseases and Cellular Therapy, St-Louis Hospital, Center of reference for rare systemic autoimmune diseases of Ile-de-France (FAI2R), AP-HP, Hôpital St-Louis, Paris University, IRSL, Paris, France; Department of Medicine, McGill University, Montreal, Quebec, Canada
| | - Sven Kili
- Sven Kili Consulting Ltd., Shrewsbury, UK; Saisei Ventures, Boston, Massachusetts, USA; CCRM, Toronto, Canada
| | | | - Daniel J Weiss
- University of Vermont College of Medicine, Burlington, Vermont, USA
| | - Felix Grignon
- International Society for Cell & Gene Therapy, Vancouver, Canada
| | - Jaap Jan Boelens
- Transplantation and Cellular Therapy, MSK Kids, Department of Pediatrics, Memorial Sloan Kettering Cancer Center, New York, New York, USA.
| |
Collapse
|
2
|
Chicana B, Abbasizadeh N, Burns C, Taglinao H, Spencer JA, Manilay JO. Deletion of Vhl in Dmp1-Expressing Cells Causes Microenvironmental Impairment of B Cell Lymphopoiesis. Front Immunol 2022; 13:780945. [PMID: 35250971 PMCID: PMC8889104 DOI: 10.3389/fimmu.2022.780945] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Accepted: 01/11/2022] [Indexed: 12/25/2022] Open
Abstract
The contributions of skeletal cells to the processes of B cell development in the bone marrow (BM) have not been completely described. The von-Hippel Lindau protein (VHL) plays a key role in cellular responses to hypoxia. Previous work showed that Dmp1-Cre;Vhl conditional knockout mice (VhlcKO), which deletes Vhl in subsets of mesenchymal stem cells, late osteoblasts and osteocytes, display dysregulated bone growth and reduction in B cells. Here, we investigated the mechanisms underlying the B cell defects using flow cytometry and high-resolution imaging. In the VhlcKO BM, B cell progenitors were increased in frequency and number, whereas Hardy Fractions B-F were decreased. VhlcKO Fractions B-C cells showed increased apoptosis and quiescence. Reciprocal BM chimeras confirmed a B cell-extrinsic source of the VhlcKO B cell defects. In support of this, VhlcKO BM supernatant contained reduced CXCL12 and elevated EPO levels. Intravital and ex vivo imaging revealed VhlcKO BM blood vessels with increased diameter, volume, and a diminished blood-BM barrier. Staining of VhlcKO B cells with an intracellular hypoxic marker indicated the natural existence of distinct B cell microenvironments that differ in local oxygen tensions and that the B cell developmental defects in VhlcKO BM are not initiated by hypoxia. Our studies identify novel mechanisms linking altered bone homeostasis with drastic BM microenvironmental changes that dysregulate B cell development.
Collapse
Affiliation(s)
- Betsabel Chicana
- Department of Molecular and Cell Biology, School of Natural Sciences, University of California, Merced, Merced, CA, United States.,Quantitative and Systems Biology Graduate Program, University of California, Merced, Merced, CA, United States
| | - Nastaran Abbasizadeh
- Quantitative and Systems Biology Graduate Program, University of California, Merced, Merced, CA, United States.,Department of Bioengineering, School of Engineering, University of California, Merced, Merced, CA, United States
| | - Christian Burns
- Quantitative and Systems Biology Graduate Program, University of California, Merced, Merced, CA, United States.,Department of Bioengineering, School of Engineering, University of California, Merced, Merced, CA, United States
| | - Hanna Taglinao
- Department of Molecular and Cell Biology, School of Natural Sciences, University of California, Merced, Merced, CA, United States
| | - Joel A Spencer
- Quantitative and Systems Biology Graduate Program, University of California, Merced, Merced, CA, United States.,Department of Bioengineering, School of Engineering, University of California, Merced, Merced, CA, United States.,Bioengineering Graduate Program, University of California, Merced, Merced, CA, United States
| | - Jennifer O Manilay
- Department of Molecular and Cell Biology, School of Natural Sciences, University of California, Merced, Merced, CA, United States.,Quantitative and Systems Biology Graduate Program, University of California, Merced, Merced, CA, United States
| |
Collapse
|
3
|
Fletcher AL, Turley SJ. Who am I? (re-)Defining fibroblast identity and immunological function in the age of bioinformatics. Immunol Rev 2021; 302:5-9. [PMID: 34219244 DOI: 10.1111/imr.12993] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Anne L Fletcher
- Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, 3800, Australia
| | | |
Collapse
|