1
|
Chagraoui J, Girard S, Mallinger L, Mayotte N, Tellechea MF, Sauvageau G. KBTBD4-mediated reduction of MYC is critical for hematopoietic stem cell expansion upon UM171 treatment. Blood 2024; 143:882-894. [PMID: 38207291 DOI: 10.1182/blood.2023021342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 12/27/2023] [Accepted: 12/29/2023] [Indexed: 01/13/2024] Open
Abstract
ABSTRACT Ex vivo expansion of hematopoietic stem cells (HSCs) is gaining importance for cell and gene therapy, and requires a shift from dormancy state to activation and cycling. However, abnormal or excessive HSC activation results in reduced self-renewal ability and increased propensity for myeloid-biased differentiation. We now report that activation of the E3 ligase complex CRL3KBTBD4 by UM171 not only induces epigenetic changes through CoREST1 degradation but also controls chromatin-bound master regulator of cell cycle entry and proliferative metabolism (MYC) levels to prevent excessive activation and maintain lympho-myeloid potential of expanded populations. Furthermore, reconstitution activity and multipotency of UM171-treated HSCs are specifically compromised when MYC levels are experimentally increased despite degradation of CoREST1.
Collapse
Affiliation(s)
- Jalila Chagraoui
- Molecular Genetics of Stem Cells Laboratory, Institute for Research in Immunology and Cancer, University of Montreal, Montreal, QC, Canada
| | - Simon Girard
- Molecular Genetics of Stem Cells Laboratory, Institute for Research in Immunology and Cancer, University of Montreal, Montreal, QC, Canada
| | - Laure Mallinger
- Molecular Genetics of Stem Cells Laboratory, Institute for Research in Immunology and Cancer, University of Montreal, Montreal, QC, Canada
| | - Nadine Mayotte
- Molecular Genetics of Stem Cells Laboratory, Institute for Research in Immunology and Cancer, University of Montreal, Montreal, QC, Canada
| | - Maria Florencia Tellechea
- Molecular Genetics of Stem Cells Laboratory, Institute for Research in Immunology and Cancer, University of Montreal, Montreal, QC, Canada
| | - Guy Sauvageau
- Molecular Genetics of Stem Cells Laboratory, Institute for Research in Immunology and Cancer, University of Montreal, Montreal, QC, Canada
- Division of Hematology, Maisonneuve-Rosemont Hospital, Montreal, QC, Canada
- Department of Medicine, Faculty of Medicine, University of Montreal, Montreal, QC, Canada
| |
Collapse
|
2
|
Spinella JF, Chagraoui J, Moison C, Lavallée VP, Boivin I, Gracias D, Lavallée S, Carpentier GR, Beliveau F, Hébert J, Sauvageau G. DELE1 haploinsufficiency causes resistance to mitochondrial stress-induced apoptosis in monosomy 5/del(5q) AML. Leukemia 2024; 38:530-537. [PMID: 38102204 PMCID: PMC10912023 DOI: 10.1038/s41375-023-02107-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 11/22/2023] [Accepted: 11/29/2023] [Indexed: 12/17/2023]
Abstract
Monosomy 5 and deletions of the chromosome 5q (-5/del(5q)) are recurrent events in de novo adult acute myeloid leukemia (AML), reaching up to 40% of cases in secondary AML. These chromosome anomalies are associated with TP53 mutations and with very poor prognosis. Using the large Leucegene genomic and transcriptomic dataset composed of 48 -5/del(5q) patient specimens and 367 control AML, we identified DELE1 - located in the common deleted region - as the most consistently downregulated gene in these leukemias. DELE1 encodes a mitochondrial protein recently characterized as the relay of mitochondrial stress to the cytosol through a newly defined OMA1-DELE1-HRI pathway which ultimately leads to the activation of ATF4, the master transcription factor of the integrated stress response. Here, we showed that the partial loss of DELE1 expression observed in -5/del(5q) patients was sufficient to significantly reduce the sensitivity to mitochondrial stress in AML cells. Overall, our results suggest that DELE1 haploinsufficiency could represent a new driver mechanism in -5/del(5q) AML.
Collapse
Affiliation(s)
- Jean-François Spinella
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, QC, Canada
- The Leucegene Project, Université de Montréal, Montréal, QC, Canada
| | - Jalila Chagraoui
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, QC, Canada
- The Leucegene Project, Université de Montréal, Montréal, QC, Canada
| | - Céline Moison
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, QC, Canada
- The Leucegene Project, Université de Montréal, Montréal, QC, Canada
| | - Vincent P Lavallée
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, QC, Canada
- The Leucegene Project, Université de Montréal, Montréal, QC, Canada
- Sainte-Justine Research Center, Centre Hospitalier Universitaire Sainte-Justine, Montréal, QC, Canada
- Department of Pediatrics, Université de Montréal, Montréal, QC, Canada
| | - Isabel Boivin
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, QC, Canada
- The Leucegene Project, Université de Montréal, Montréal, QC, Canada
| | - Deanne Gracias
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, QC, Canada
- The Leucegene Project, Université de Montréal, Montréal, QC, Canada
| | - Sylvie Lavallée
- The Leucegene Project, Université de Montréal, Montréal, QC, Canada
- Leukemia Cell Bank of Quebec, Maisonneuve-Rosemont Hospital, Montréal, QC, Canada
| | - Guillaume Richard Carpentier
- The Leucegene Project, Université de Montréal, Montréal, QC, Canada
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
- Department of Medicine, Division of Medical Oncology and Hematology, Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - François Beliveau
- The Leucegene Project, Université de Montréal, Montréal, QC, Canada
- Leukemia Cell Bank of Quebec, Maisonneuve-Rosemont Hospital, Montréal, QC, Canada
| | - Josée Hébert
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, QC, Canada.
- The Leucegene Project, Université de Montréal, Montréal, QC, Canada.
- Leukemia Cell Bank of Quebec, Maisonneuve-Rosemont Hospital, Montréal, QC, Canada.
- Division of Hematology, Maisonneuve-Rosemont Hospital, Montréal, QC, Canada.
- Department of Medicine, Faculty of Medicine, Université de Montréal, Montréal, QC, Canada.
| | - Guy Sauvageau
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, QC, Canada.
- The Leucegene Project, Université de Montréal, Montréal, QC, Canada.
- Leukemia Cell Bank of Quebec, Maisonneuve-Rosemont Hospital, Montréal, QC, Canada.
- Division of Hematology, Maisonneuve-Rosemont Hospital, Montréal, QC, Canada.
- Department of Medicine, Faculty of Medicine, Université de Montréal, Montréal, QC, Canada.
| |
Collapse
|
3
|
Gress V, Roussy M, Boulianne L, Bilodeau M, Cardin S, El-Hachem N, Lisi V, Khakipoor B, Rouette A, Farah A, Théret L, Aubert L, Fatima F, Audemard É, Thibault P, Bonneil É, Chagraoui J, Laramée L, Gendron P, Jouan L, Jammali S, Paré B, Simpson SM, Tran TH, Duval M, Teira P, Bittencourt H, Santiago R, Barabé F, Sauvageau G, Smith MA, Hébert J, Roux PP, Gruber TA, Lavallée VP, Wilhelm BT, Cellot S. CBFA2T3::GLIS2 pediatric acute megakaryoblastic leukemia is sensitive to BCL-XL inhibition by navitoclax and DT2216. Blood Adv 2024; 8:112-129. [PMID: 37729615 PMCID: PMC10787250 DOI: 10.1182/bloodadvances.2022008899] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 07/25/2023] [Accepted: 09/02/2023] [Indexed: 09/22/2023] Open
Abstract
ABSTRACT Acute megakaryoblastic leukemia (AMKL) is a rare, developmentally restricted, and highly lethal cancer of early childhood. The paucity and hypocellularity (due to myelofibrosis) of primary patient samples hamper the discovery of cell- and genotype-specific treatments. AMKL is driven by mutually exclusive chimeric fusion oncogenes in two-thirds of the cases, with CBFA2T3::GLIS2 (CG2) and NUP98 fusions (NUP98r) representing the highest-fatality subgroups. We established CD34+ cord blood-derived CG2 models (n = 6) that sustain serial transplantation and recapitulate human leukemia regarding immunophenotype, leukemia-initiating cell frequencies, comutational landscape, and gene expression signature, with distinct upregulation of the prosurvival factor B-cell lymphoma 2 (BCL2). Cell membrane proteomic analyses highlighted CG2 surface markers preferentially expressed on leukemic cells compared with CD34+ cells (eg, NCAM1 and CD151). AMKL differentiation block in the mega-erythroid progenitor space was confirmed by single-cell profiling. Although CG2 cells were rather resistant to BCL2 genetic knockdown or selective pharmacological inhibition with venetoclax, they were vulnerable to strategies that target the megakaryocytic prosurvival factor BCL-XL (BCL2L1), including in vitro and in vivo treatment with BCL2/BCL-XL/BCL-W inhibitor navitoclax and DT2216, a selective BCL-XL proteolysis-targeting chimera degrader developed to limit thrombocytopenia in patients. NUP98r AMKL were also sensitive to BCL-XL inhibition but not the NUP98r monocytic leukemia, pointing to a lineage-specific dependency. Navitoclax or DT2216 treatment in combination with low-dose cytarabine further reduced leukemic burden in mice. This work extends the cellular and molecular diversity set of human AMKL models and uncovers BCL-XL as a therapeutic vulnerability in CG2 and NUP98r AMKL.
Collapse
Affiliation(s)
- Verena Gress
- Pediatric Hematology-Oncology Division, Charles-Bruneau Cancer Center, Centre Hospitalier Universitaire Sainte-Justine Research Center, Montréal, QC, Canada
- Faculty of Medicine, Université de Montréal, Montréal, QC, Canada
| | - Mathieu Roussy
- Pediatric Hematology-Oncology Division, Charles-Bruneau Cancer Center, Centre Hospitalier Universitaire Sainte-Justine Research Center, Montréal, QC, Canada
- Faculty of Medicine, Université de Montréal, Montréal, QC, Canada
| | - Luc Boulianne
- Pediatric Hematology-Oncology Division, Charles-Bruneau Cancer Center, Centre Hospitalier Universitaire Sainte-Justine Research Center, Montréal, QC, Canada
- Department of Pathology, McGill University, Montréal, QC, Canada
| | - Mélanie Bilodeau
- Pediatric Hematology-Oncology Division, Charles-Bruneau Cancer Center, Centre Hospitalier Universitaire Sainte-Justine Research Center, Montréal, QC, Canada
| | - Sophie Cardin
- Pediatric Hematology-Oncology Division, Charles-Bruneau Cancer Center, Centre Hospitalier Universitaire Sainte-Justine Research Center, Montréal, QC, Canada
| | - Nehme El-Hachem
- Pediatric Hematology-Oncology Division, Charles-Bruneau Cancer Center, Centre Hospitalier Universitaire Sainte-Justine Research Center, Montréal, QC, Canada
| | - Véronique Lisi
- Pediatric Hematology-Oncology Division, Charles-Bruneau Cancer Center, Centre Hospitalier Universitaire Sainte-Justine Research Center, Montréal, QC, Canada
| | - Banafsheh Khakipoor
- Pediatric Hematology-Oncology Division, Charles-Bruneau Cancer Center, Centre Hospitalier Universitaire Sainte-Justine Research Center, Montréal, QC, Canada
| | - Alexandre Rouette
- Molecular Diagnostic Laboratory, Centre Hospitalier Universitaire Sainte-Justine, Montréal, QC, Canada
| | - Azer Farah
- Pediatric Hematology-Oncology Division, Charles-Bruneau Cancer Center, Centre Hospitalier Universitaire Sainte-Justine Research Center, Montréal, QC, Canada
| | - Louis Théret
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, QC, Canada
| | - Léo Aubert
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, QC, Canada
| | - Furat Fatima
- Pediatric Hematology-Oncology Division, Charles-Bruneau Cancer Center, Centre Hospitalier Universitaire Sainte-Justine Research Center, Montréal, QC, Canada
- Department of Pathology, McGill University, Montréal, QC, Canada
| | - Éric Audemard
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, QC, Canada
| | - Pierre Thibault
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, QC, Canada
| | - Éric Bonneil
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, QC, Canada
| | - Jalila Chagraoui
- Molecular Genetics of Stem Cells Laboratory, Institute for Research in Immunology and Cancer, Montréal, Québec, Canada
| | - Louise Laramée
- Pediatric Hematology-Oncology Division, Charles-Bruneau Cancer Center, Centre Hospitalier Universitaire Sainte-Justine Research Center, Montréal, QC, Canada
| | - Patrick Gendron
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, QC, Canada
| | - Loubna Jouan
- Molecular Diagnostic Laboratory, Centre Hospitalier Universitaire Sainte-Justine, Montréal, QC, Canada
| | - Safa Jammali
- Pediatric Hematology-Oncology Division, Charles-Bruneau Cancer Center, Centre Hospitalier Universitaire Sainte-Justine Research Center, Montréal, QC, Canada
| | - Bastien Paré
- Pediatric Hematology-Oncology Division, Charles-Bruneau Cancer Center, Centre Hospitalier Universitaire Sainte-Justine Research Center, Montréal, QC, Canada
| | - Shawn M Simpson
- Pediatric Hematology-Oncology Division, Charles-Bruneau Cancer Center, Centre Hospitalier Universitaire Sainte-Justine Research Center, Montréal, QC, Canada
| | - Thai Hoa Tran
- Pediatric Hematology-Oncology Division, Charles-Bruneau Cancer Center, Centre Hospitalier Universitaire Sainte-Justine Research Center, Montréal, QC, Canada
- Faculty of Medicine, Université de Montréal, Montréal, QC, Canada
| | - Michel Duval
- Pediatric Hematology-Oncology Division, Charles-Bruneau Cancer Center, Centre Hospitalier Universitaire Sainte-Justine Research Center, Montréal, QC, Canada
- Faculty of Medicine, Université de Montréal, Montréal, QC, Canada
| | - Pierre Teira
- Pediatric Hematology-Oncology Division, Charles-Bruneau Cancer Center, Centre Hospitalier Universitaire Sainte-Justine Research Center, Montréal, QC, Canada
- Faculty of Medicine, Université de Montréal, Montréal, QC, Canada
| | - Henrique Bittencourt
- Pediatric Hematology-Oncology Division, Charles-Bruneau Cancer Center, Centre Hospitalier Universitaire Sainte-Justine Research Center, Montréal, QC, Canada
- Faculty of Medicine, Université de Montréal, Montréal, QC, Canada
| | - Raoul Santiago
- Division of Hematology-Oncology, Centre Hospitalier Universitaire de Québec-Université Laval, Québec City, QC, Canada
- Centre de recherche du Centre Hospitalier Universitaire de Québec-Université Laval, Québec City, QC, Canada
| | - Frédéric Barabé
- Centre de recherche du Centre Hospitalier Universitaire de Québec-Université Laval, Québec City, QC, Canada
- Department of Medicine, Faculty of Medicine, Université Laval, Québec City, QC, Canada
| | - Guy Sauvageau
- Faculty of Medicine, Université de Montréal, Montréal, QC, Canada
- Molecular Genetics of Stem Cells Laboratory, Institute for Research in Immunology and Cancer, Montréal, Québec, Canada
- Division of Hematology, Maisonneuve-Rosemont Hospital, Montréal, QC, Canada
| | - Martin A Smith
- Pediatric Hematology-Oncology Division, Charles-Bruneau Cancer Center, Centre Hospitalier Universitaire Sainte-Justine Research Center, Montréal, QC, Canada
- Department of Biochemistry and Molecular Medicine, Faculty of Medicine, Université de Montréal, Montréal, QC, Canada
| | - Josée Hébert
- Faculty of Medicine, Université de Montréal, Montréal, QC, Canada
- Division of Hematology-Oncology and Quebec Leukemia Cell Bank, Hôpital Maisonneuve-Rosemont, Montréal, QC, Canada
| | - Philippe P Roux
- Faculty of Medicine, Université de Montréal, Montréal, QC, Canada
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, QC, Canada
- Department of Pathology and Cell Biology, Faculty of Medicine, Université de Montréal, Montréal, QC, Canada
| | - Tanja A Gruber
- Department of Pediatrics, Stanford University School of Medicine, Stanford, CA
- Stanford Cancer Institute, Stanford University School of Medicine, Stanford, CA
| | - Vincent-Philippe Lavallée
- Pediatric Hematology-Oncology Division, Charles-Bruneau Cancer Center, Centre Hospitalier Universitaire Sainte-Justine Research Center, Montréal, QC, Canada
- Faculty of Medicine, Université de Montréal, Montréal, QC, Canada
| | - Brian T Wilhelm
- Faculty of Medicine, Université de Montréal, Montréal, QC, Canada
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, QC, Canada
| | - Sonia Cellot
- Pediatric Hematology-Oncology Division, Charles-Bruneau Cancer Center, Centre Hospitalier Universitaire Sainte-Justine Research Center, Montréal, QC, Canada
- Faculty of Medicine, Université de Montréal, Montréal, QC, Canada
| |
Collapse
|
4
|
Affiliation(s)
| | - Jalila Chagraoui
- Institute for Research in Immunology and Cancer, University of Montreal, Montreal, QC, Canada
| | - Sandra Cohen
- Institute for Research in Immunology and Cancer, University of Montreal, Montreal, QC, Canada
| | - Guy Sauvageau
- Institute for Research in Immunology and Cancer, University of Montreal, Montreal, QC, Canada.
| |
Collapse
|
5
|
Sauvageau G, Chagraoui J, Tomellini E, Rojas-Sutterlin S, Corneau S, Girard S, Tellelchea MF, Gingras S, Gareau Y, Ruel R, Cohen S, Milano F, Marinier A. 1023 – THE IMPORTANCE OF STEM CELL EXPANSION IN TOMORROW'S MEDICINE. Exp Hematol 2022. [DOI: 10.1016/j.exphem.2022.07.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
6
|
Chagraoui J, Girard S, Spinella JF, Simon L, Bonneil E, Mayotte N, MacRae T, Coulombe-Huntington J, Bertomeu T, Moison C, Tomellini E, Thibault P, Tyers M, Marinier A, Sauvageau G. UM171 Preserves Epigenetic Marks that Are Reduced in Ex Vivo Culture of Human HSCs via Potentiation of the CLR3-KBTBD4 Complex. Cell Stem Cell 2021; 28:48-62.e6. [PMID: 33417871 DOI: 10.1016/j.stem.2020.12.002] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 10/22/2020] [Accepted: 12/03/2020] [Indexed: 01/11/2023]
Abstract
Human hematopoietic stem cells (HSCs) exhibit attrition of their self-renewal capacity when cultured ex vivo, a process that is partially reversed upon treatment with epigenetic modifiers, most notably inhibitors of histone deacetylases (HDACs) or lysine-specific demethylase LSD1. A recent study showed that the human HSC self-renewal agonist UM171 modulates the CoREST complex, leading to LSD1 degradation, whose inhibition mimics the activity of UM171. The mechanism underlying the UM171-mediated loss of CoREST function remains undetermined. We now report that UM171 potentiates the activity of a CULLIN3-E3 ubiquitin ligase (CRL3) complex whose target specificity is dictated by the poorly characterized Kelch/BTB domain protein KBTBD4. CRL3KBTBD4 targets components of the LSD1/RCOR1 corepressor complex for proteasomal degradation, hence re-establishing H3K4me2 and H3K27ac epigenetic marks, which are rapidly decreased upon ex vivo culture of human HSCs.
Collapse
Affiliation(s)
- Jalila Chagraoui
- Molecular Genetics of Stem Cells Laboratory, Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montreal, QC, Canada
| | - Simon Girard
- Molecular Genetics of Stem Cells Laboratory, Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montreal, QC, Canada
| | - Jean-Francois Spinella
- Molecular Genetics of Stem Cells Laboratory, Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montreal, QC, Canada
| | - Laura Simon
- Molecular Genetics of Stem Cells Laboratory, Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montreal, QC, Canada
| | - Eric Bonneil
- Departments of Biochemistry and Chemistry, Institute for Research in Immunology and Cancer, Université de Montréal, Montreal, QC, Canada
| | - Nadine Mayotte
- Molecular Genetics of Stem Cells Laboratory, Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montreal, QC, Canada
| | - Tara MacRae
- Molecular Genetics of Stem Cells Laboratory, Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montreal, QC, Canada
| | - Jasmin Coulombe-Huntington
- Department of Medicine, Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montreal, QC, Canada
| | - Thierry Bertomeu
- Department of Medicine, Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montreal, QC, Canada
| | - Celine Moison
- Molecular Genetics of Stem Cells Laboratory, Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montreal, QC, Canada
| | - Elisa Tomellini
- Molecular Genetics of Stem Cells Laboratory, Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montreal, QC, Canada
| | - Pierre Thibault
- Departments of Biochemistry and Chemistry, Institute for Research in Immunology and Cancer, Université de Montréal, Montreal, QC, Canada
| | - Mike Tyers
- Department of Medicine, Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montreal, QC, Canada
| | - Anne Marinier
- Faculty of Arts and Science, Université de Montréal, Montreal, QC, Canada
| | - Guy Sauvageau
- Molecular Genetics of Stem Cells Laboratory, Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montreal, QC, Canada; Division of Hematology, Maisonneuve-Rosemont Hospital, Montreal, QC, Canada; Department of Medicine, Faculty of Medicine, Université de Montréal, Montreal, QC, Canada.
| |
Collapse
|
7
|
Dumont-Lagacé M, Li Q, Tanguay M, Chagraoui J, Kientega T, Cardin GB, Brasey A, Trofimov A, Carli C, Ahmad I, Bambace NM, Bernard L, Kiss TL, Roy J, Roy DC, Lemieux S, Perreault C, Rodier F, Dufresne SF, Busque L, Lachance S, Sauvageau G, Cohen S, Delisle JS. UM171-Expanded Cord Blood Transplants Support Robust T Cell Reconstitution with Low Rates of Severe Infections. Transplant Cell Ther 2020; 27:76.e1-76.e9. [PMID: 33022376 DOI: 10.1016/j.bbmt.2020.09.031] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 09/24/2020] [Accepted: 09/28/2020] [Indexed: 10/23/2022]
Abstract
Rapid T cell reconstitution following hematopoietic stem cell transplantation (HSCT) is essential for protection against infections and has been associated with lower incidence of chronic graft-versus-host disease (cGVHD), relapse, and transplant-related mortality (TRM). While cord blood (CB) transplants are associated with lower rates of cGVHD and relapse, their low stem cell content results in slower immune reconstitution and higher risk of graft failure, severe infections, and TRM. Recently, results of a phase I/II trial revealed that single UM171-expanded CB transplant allowed the use of smaller CB units without compromising engraftment (www.clinicaltrials.gov, NCT02668315). We assessed T cell reconstitution in patients who underwent transplantation with UM171-expanded CB grafts and retrospectively compared it to that of patients receiving unmanipulated CB transplants. While median T cell dose infused was at least 2 to 3 times lower than that of unmanipulated CB, numbers and phenotype of T cells at 3, 6, and 12 months post-transplant were similar between the 2 cohorts. T cell receptor sequencing analyses revealed that UM171 patients had greater T cell diversity and higher numbers of clonotypes at 12 months post-transplant. This was associated with higher counts of naive T cells and recent thymic emigrants, suggesting active thymopoiesis and correlating with the demonstration that UM171 expands common lymphoid progenitors in vitro. UM171 patients also showed rapid virus-specific T cell reactivity and significantly reduced incidence of severe infections. These results suggest that UM171 patients benefit from rapid T cell reconstitution, which likely contributes to the absence of moderate/severe cGVHD, infection-related mortality, and late TRM observed in this cohort.
Collapse
Affiliation(s)
- Maude Dumont-Lagacé
- ExCellThera, Inc., Montreal, Quebec, Canada; Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montreal, Quebec, Canada
| | - Qi Li
- Centre de recherche de l'Hôpital Maisonneuve-Rosemont, Montreal, Quebec, Canada
| | - Mégane Tanguay
- Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montreal, Quebec, Canada
| | - Jalila Chagraoui
- Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montreal, Quebec, Canada
| | - Tibila Kientega
- Centre de recherche du Centre hospitalier de l'Université de Montréal (CRCHUM) and Institut du cancer de Montréal, Montreal, Quebec, Canada
| | - Guillaume B Cardin
- Centre de recherche du Centre hospitalier de l'Université de Montréal (CRCHUM) and Institut du cancer de Montréal, Montreal, Quebec, Canada
| | - Ann Brasey
- Centre de recherche de l'Hôpital Maisonneuve-Rosemont, Montreal, Quebec, Canada
| | - Assya Trofimov
- Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montreal, Quebec, Canada; Department of Computer Science and Operations Research, Université de Montréal, Montreal, Quebec, Canada
| | - Cédric Carli
- Centre de recherche de l'Hôpital Maisonneuve-Rosemont, Montreal, Quebec, Canada
| | - Imran Ahmad
- Department of Medicine, Université de Montréal, Montreal, Quebec, Canada; Division of Hematology-Oncology, Hôpital Maisonneuve-Rosemont, Montreal, Quebec, Canada
| | - Nadia M Bambace
- Department of Medicine, Université de Montréal, Montreal, Quebec, Canada; Division of Hematology-Oncology, Hôpital Maisonneuve-Rosemont, Montreal, Quebec, Canada
| | - Léa Bernard
- Department of Medicine, Université de Montréal, Montreal, Quebec, Canada; Division of Hematology-Oncology, Hôpital Maisonneuve-Rosemont, Montreal, Quebec, Canada
| | - Thomas L Kiss
- Department of Medicine, Université de Montréal, Montreal, Quebec, Canada; Division of Hematology-Oncology, Hôpital Maisonneuve-Rosemont, Montreal, Quebec, Canada
| | - Jean Roy
- Department of Medicine, Université de Montréal, Montreal, Quebec, Canada; Division of Hematology-Oncology, Hôpital Maisonneuve-Rosemont, Montreal, Quebec, Canada
| | - Denis-Claude Roy
- Centre de recherche de l'Hôpital Maisonneuve-Rosemont, Montreal, Quebec, Canada; Department of Medicine, Université de Montréal, Montreal, Quebec, Canada; Division of Hematology-Oncology, Hôpital Maisonneuve-Rosemont, Montreal, Quebec, Canada
| | - Sébastien Lemieux
- Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montreal, Quebec, Canada; Department of Computer Science and Operations Research, Université de Montréal, Montreal, Quebec, Canada.; Department of Biochemistry and Molecular Medicine, Université de Montréal, Montreal, Quebec, Canada
| | - Claude Perreault
- Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montreal, Quebec, Canada; Department of Medicine, Université de Montréal, Montreal, Quebec, Canada
| | - Francis Rodier
- Centre de recherche du Centre hospitalier de l'Université de Montréal (CRCHUM) and Institut du cancer de Montréal, Montreal, Quebec, Canada; Department of Radiology, Radio-Oncology and Nuclear Medicine, Université de Montréal, Montreal, Quebec, Canada
| | - Simon Frédéric Dufresne
- Department of Microbiology, Infectious Diseases and Immunology, Université de Montréal, Montreal, Quebec, Canada; Division of Infectious Diseases and Clinical Microbiology, Hôpital Maisonneuve-Rosemont, Montreal, Quebec, Canada
| | - Lambert Busque
- Centre de recherche de l'Hôpital Maisonneuve-Rosemont, Montreal, Quebec, Canada; Department of Medicine, Université de Montréal, Montreal, Quebec, Canada; Division of Hematology-Oncology, Hôpital Maisonneuve-Rosemont, Montreal, Quebec, Canada
| | - Silvy Lachance
- Department of Medicine, Université de Montréal, Montreal, Quebec, Canada; Division of Hematology-Oncology, Hôpital Maisonneuve-Rosemont, Montreal, Quebec, Canada
| | - Guy Sauvageau
- ExCellThera, Inc., Montreal, Quebec, Canada; Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montreal, Quebec, Canada; Department of Medicine, Université de Montréal, Montreal, Quebec, Canada; Division of Hematology-Oncology, Hôpital Maisonneuve-Rosemont, Montreal, Quebec, Canada
| | - Sandra Cohen
- Department of Medicine, Université de Montréal, Montreal, Quebec, Canada; Division of Hematology-Oncology, Hôpital Maisonneuve-Rosemont, Montreal, Quebec, Canada
| | - Jean-Sébastien Delisle
- Centre de recherche de l'Hôpital Maisonneuve-Rosemont, Montreal, Quebec, Canada; Department of Medicine, Université de Montréal, Montreal, Quebec, Canada; Division of Hematology-Oncology, Hôpital Maisonneuve-Rosemont, Montreal, Quebec, Canada.
| |
Collapse
|
8
|
Dumont-Lagacé M, Li Q, Tanguay M, Chagraoui J, Kientega T, Cardin GB, Brasey A, Trofimov A, Carli C, Ahmad I, Bambace N, Bernard L, Kiss TL, Roy J, Roy DC, Lemieux S, Perreault C, Rodier F, Dufresne SF, Busque L, Lachance S, Sauvageau G, Cohen S, Delisle JS. Single UM171-Expanded Cord Blood Transplants Support Robust T-Cell Reconstitution with Low Rates of Severe Infections. Stem Cells Transl Med 2020. [DOI: 10.1002/sctm.12813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
| | - Qi Li
- b Centre de Recherche de l'Hôpital Maisonneuve-Rosemont
| | | | | | - Tibila Kientega
- c Université de Montréal
- e Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM) and Institut du Cancer de Montréal
| | - Guillaume B. Cardin
- c Université de Montréal
- e Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM) and Institut du Cancer de Montréal
| | - Ann Brasey
- b Centre de Recherche de l'Hôpital Maisonneuve-Rosemont
| | | | - Cédric Carli
- b Centre de Recherche de l'Hôpital Maisonneuve-Rosemont
| | - Imran Ahmad
- c Université de Montréal
- f Hôpital Maisonneuve-Rosemont, Montréal, Quebec, Canada
| | - Nadia Bambace
- c Université de Montréal
- f Hôpital Maisonneuve-Rosemont, Montréal, Quebec, Canada
| | - Léa Bernard
- c Université de Montréal
- f Hôpital Maisonneuve-Rosemont, Montréal, Quebec, Canada
| | - Thomas L. Kiss
- c Université de Montréal
- f Hôpital Maisonneuve-Rosemont, Montréal, Quebec, Canada
| | - Jean Roy
- c Université de Montréal
- f Hôpital Maisonneuve-Rosemont, Montréal, Quebec, Canada
| | - Denis-Claude Roy
- b Centre de Recherche de l'Hôpital Maisonneuve-Rosemont
- c Université de Montréal
- f Hôpital Maisonneuve-Rosemont, Montréal, Quebec, Canada
| | | | | | - Francis Rodier
- c Université de Montréal
- e Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM) and Institut du Cancer de Montréal
| | | | - Lambert Busque
- b Centre de Recherche de l'Hôpital Maisonneuve-Rosemont
- c Université de Montréal
- f Hôpital Maisonneuve-Rosemont, Montréal, Quebec, Canada
| | - Silvy Lachance
- c Université de Montréal
- f Hôpital Maisonneuve-Rosemont, Montréal, Quebec, Canada
| | - Guy Sauvageau
- a ExCellThera Inc
- c Université de Montréal
- f Hôpital Maisonneuve-Rosemont, Montréal, Quebec, Canada
| | - Sandra Cohen
- c Université de Montréal
- f Hôpital Maisonneuve-Rosemont, Montréal, Quebec, Canada
| | - Jean-Sébastien Delisle
- b Centre de Recherche de l'Hôpital Maisonneuve-Rosemont
- c Université de Montréal
- f Hôpital Maisonneuve-Rosemont, Montréal, Quebec, Canada
| |
Collapse
|
9
|
Tomellini E, Fares I, Lehnertz B, Chagraoui J, Mayotte N, MacRae T, Bordeleau MÈ, Corneau S, Bisaillon R, Sauvageau G. Integrin-α3 Is a Functional Marker of Ex Vivo Expanded Human Long-Term Hematopoietic Stem Cells. Cell Rep 2020; 28:1063-1073.e5. [PMID: 31340144 DOI: 10.1016/j.celrep.2019.06.084] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 03/12/2019] [Accepted: 06/24/2019] [Indexed: 12/31/2022] Open
Abstract
Transplantation of expanded hematopoietic stem cells (HSCs) and gene therapy based on HSC engineering have emerged as promising approaches for the treatment of hematological diseases. Nevertheless, the immunophenotype of cultured HSCs remains poorly defined. Here, we identify Integrin-α3 (ITGA3) as a marker of cultured human HSCs. Exploiting the pyrimidoindole derivative UM171 to expand cord blood (CB) cells, we show that ITGA3 expression is sufficient to separate the primitive EPCR+CD90+CD133+CD34+CD45RA- HSC population into two functionally distinct fractions presenting mostly short-term (ITGA3-) and both short-term and long-term (ITGA3+) repopulating potential. ITGA3+ cells exhibit robust multilineage differentiation potential, serial reconstitution ability in immunocompromised mice, and an HSC-specific transcriptomic signature. Moreover, ITGA3 expression is functionally required for the long-term engraftment of CB cells. Altogether, our results indicate that ITGA3 is a reliable marker of cultured human long-term repopulating HSCs (LT-HSCs) and represents an important tool to improve the accuracy of prospective HSC identification in culture.
Collapse
Affiliation(s)
- Elisa Tomellini
- Molecular Genetics of Stem Cells Laboratory, Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, H3T 1J4 QC, Canada
| | - Iman Fares
- Molecular Genetics of Stem Cells Laboratory, Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, H3T 1J4 QC, Canada
| | - Bernhard Lehnertz
- Molecular Genetics of Stem Cells Laboratory, Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, H3T 1J4 QC, Canada
| | - Jalila Chagraoui
- Molecular Genetics of Stem Cells Laboratory, Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, H3T 1J4 QC, Canada
| | - Nadine Mayotte
- Molecular Genetics of Stem Cells Laboratory, Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, H3T 1J4 QC, Canada
| | - Tara MacRae
- Molecular Genetics of Stem Cells Laboratory, Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, H3T 1J4 QC, Canada
| | - Marie-Ève Bordeleau
- Molecular Genetics of Stem Cells Laboratory, Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, H3T 1J4 QC, Canada
| | - Sophie Corneau
- Molecular Genetics of Stem Cells Laboratory, Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, H3T 1J4 QC, Canada
| | - Richard Bisaillon
- Molecular Genetics of Stem Cells Laboratory, Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, H3T 1J4 QC, Canada
| | - Guy Sauvageau
- Molecular Genetics of Stem Cells Laboratory, Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, H3T 1J4 QC, Canada; Division of Hematology, Maisonneuve-Rosemont Hospital, Montréal, H1T 2M4 QC, Canada; Department of Medicine, Faculty of Medicine, Université de Montréal, Montréal, H3T 1J4 QC, Canada.
| |
Collapse
|
10
|
Hajmirza A, Simon L, Spinella JF, MacRae T, Lehnertz B, Chagraoui J, Mayotte N, Bertomeu T, Coulombe-Huntington J, Boucher G, Feghaly A, Bordeleau ME, Lemieux S, Tyers M, Hébert J, Sauvageau G. 3082 – EXPLORING GLUCOCORTICOID SENSITIVITY MODULATORS IN HUMAN ACUTE MYELOID LEUKEMIA. Exp Hematol 2020. [DOI: 10.1016/j.exphem.2020.09.097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
11
|
Dubois EL, Guitton-Sert L, Béliveau M, Parmar K, Chagraoui J, Vignard J, Pauty J, Caron MC, Coulombe Y, Buisson R, Jacquet K, Gamblin C, Gao Y, Laprise P, Lebel M, Sauvageau G, D d'Andrea A, Masson JY. A Fanci knockout mouse model reveals common and distinct functions for FANCI and FANCD2. Nucleic Acids Res 2019; 47:7532-7547. [PMID: 31219578 PMCID: PMC6698648 DOI: 10.1093/nar/gkz514] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2018] [Revised: 05/22/2019] [Accepted: 06/05/2019] [Indexed: 12/12/2022] Open
Abstract
Fanconi Anemia (FA) clinical phenotypes are heterogenous and rely on a mutation in one of the 22 FANC genes (FANCA-W) involved in a common interstrand DNA crosslink-repair pathway. A critical step in the activation of FA pathway is the monoubiquitination of FANCD2 and its binding partner FANCI. To better address the clinical phenotype associated with FANCI and the epistatic relationship with FANCD2, we created the first conditional inactivation model for FANCI in mouse. Fanci −/− mice displayed typical FA features such as delayed development in utero, microphtalmia, cellular sensitivity to mitomycin C, occasional limb abnormalities and hematological deficiencies. Interestingly, the deletion of Fanci leads to a strong meiotic phenotype and severe hypogonadism. FANCI was localized in spermatocytes and spermatids and in the nucleus of oocytes. Both FANCI and FANCD2 proteins co-localized with RPA along meiotic chromosomes, albeit at different levels. Consistent with a role in meiotic recombination, FANCI interacted with RAD51 and stimulated D-loop formation, unlike FANCD2. The double knockout Fanci−/− Fancd2−/− also showed epistatic relationship for hematological defects while being not epistatic with respect to generating viable mice in crosses of double heterozygotes. Collectively, this study highlights common and distinct functions of FANCI and FANCD2 during mouse development, meiotic recombination and hematopoiesis.
Collapse
Affiliation(s)
- Emilie L Dubois
- CHU de Québec Research Center, HDQ Pavilion, Oncology Division, 9 McMahon, Québec City, QC G1R 3S3, Canada.,Department of Molecular Biology, Medical Biochemistry and Pathology; Laval University Cancer Research Center, Québec City, QC G1V 0A6, Canada
| | - Laure Guitton-Sert
- CHU de Québec Research Center, HDQ Pavilion, Oncology Division, 9 McMahon, Québec City, QC G1R 3S3, Canada.,Department of Molecular Biology, Medical Biochemistry and Pathology; Laval University Cancer Research Center, Québec City, QC G1V 0A6, Canada
| | - Mariline Béliveau
- CHU de Québec Research Center, HDQ Pavilion, Oncology Division, 9 McMahon, Québec City, QC G1R 3S3, Canada.,Department of Molecular Biology, Medical Biochemistry and Pathology; Laval University Cancer Research Center, Québec City, QC G1V 0A6, Canada
| | - Kalindi Parmar
- Department of Radiation Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA
| | - Jalila Chagraoui
- Laboratory of Molecular Genetics of Hematopoietic Stem Cells, Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, QC, H3C 3J7, Canada
| | - Julien Vignard
- CHU de Québec Research Center, HDQ Pavilion, Oncology Division, 9 McMahon, Québec City, QC G1R 3S3, Canada.,Department of Molecular Biology, Medical Biochemistry and Pathology; Laval University Cancer Research Center, Québec City, QC G1V 0A6, Canada
| | - Joris Pauty
- CHU de Québec Research Center, HDQ Pavilion, Oncology Division, 9 McMahon, Québec City, QC G1R 3S3, Canada.,Department of Molecular Biology, Medical Biochemistry and Pathology; Laval University Cancer Research Center, Québec City, QC G1V 0A6, Canada
| | - Marie-Christine Caron
- CHU de Québec Research Center, HDQ Pavilion, Oncology Division, 9 McMahon, Québec City, QC G1R 3S3, Canada.,Department of Molecular Biology, Medical Biochemistry and Pathology; Laval University Cancer Research Center, Québec City, QC G1V 0A6, Canada
| | - Yan Coulombe
- CHU de Québec Research Center, HDQ Pavilion, Oncology Division, 9 McMahon, Québec City, QC G1R 3S3, Canada.,Department of Molecular Biology, Medical Biochemistry and Pathology; Laval University Cancer Research Center, Québec City, QC G1V 0A6, Canada
| | - Rémi Buisson
- Department of Biological Chemistry, University of California, Irvine, CA 92697, USA
| | - Karine Jacquet
- CHU de Québec Research Center, HDQ Pavilion, Oncology Division, 9 McMahon, Québec City, QC G1R 3S3, Canada.,Department of Molecular Biology, Medical Biochemistry and Pathology; Laval University Cancer Research Center, Québec City, QC G1V 0A6, Canada
| | - Clémence Gamblin
- CHU de Québec Research Center, HDQ Pavilion, Oncology Division, 9 McMahon, Québec City, QC G1R 3S3, Canada.,Department of Molecular Biology, Medical Biochemistry and Pathology; Laval University Cancer Research Center, Québec City, QC G1V 0A6, Canada
| | - Yuandi Gao
- CHU de Québec Research Center, HDQ Pavilion, Oncology Division, 9 McMahon, Québec City, QC G1R 3S3, Canada.,Department of Molecular Biology, Medical Biochemistry and Pathology; Laval University Cancer Research Center, Québec City, QC G1V 0A6, Canada
| | - Patrick Laprise
- CHU de Québec Research Center, HDQ Pavilion, Oncology Division, 9 McMahon, Québec City, QC G1R 3S3, Canada.,Department of Molecular Biology, Medical Biochemistry and Pathology; Laval University Cancer Research Center, Québec City, QC G1V 0A6, Canada
| | - Michel Lebel
- CHU de Québec Research Center, HDQ Pavilion, Oncology Division, 9 McMahon, Québec City, QC G1R 3S3, Canada.,Department of Molecular Biology, Medical Biochemistry and Pathology; Laval University Cancer Research Center, Québec City, QC G1V 0A6, Canada
| | - Guy Sauvageau
- Department of Biological Chemistry, University of California, Irvine, CA 92697, USA
| | - Alan D d'Andrea
- Department of Radiation Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA
| | - Jean-Yves Masson
- CHU de Québec Research Center, HDQ Pavilion, Oncology Division, 9 McMahon, Québec City, QC G1R 3S3, Canada.,Department of Molecular Biology, Medical Biochemistry and Pathology; Laval University Cancer Research Center, Québec City, QC G1V 0A6, Canada.,FRQS chair in genome stability
| |
Collapse
|
12
|
Cohen S, Roy J, Lachance S, Delisle JS, Marinier A, Busque L, Roy DC, Barabé F, Ahmad I, Bambace N, Bernard L, Kiss T, Bouchard P, Caudrelier P, Landais S, Larochelle F, Chagraoui J, Lehnertz B, Corneau S, Tomellini E, van Kampen JJA, Cornelissen JJ, Dumont-Lagacé M, Tanguay M, Li Q, Lemieux S, Zandstra PW, Sauvageau G. Hematopoietic stem cell transplantation using single UM171-expanded cord blood: a single-arm, phase 1-2 safety and feasibility study. Lancet Haematol 2019; 7:e134-e145. [PMID: 31704264 DOI: 10.1016/s2352-3026(19)30202-9] [Citation(s) in RCA: 124] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 08/27/2019] [Accepted: 08/30/2019] [Indexed: 12/24/2022]
Abstract
BACKGROUND Benefits of cord blood transplantation include low rates of relapse and chronic graft-versus-host disease (GVHD). However, the use of cord blood is rapidly declining because of the high incidence of infections, severe acute GVHD, and transplant-related mortality. UM171, a haematopoietic stem cell self-renewal agonist, has been shown to expand cord blood stem cells and enhance multilineage blood cell reconstitution in mice. We aimed to investigate the safety and feasibility of single UM171-expanded cord blood transplantation in patients with haematological malignancies who do not have a suitable HLA-matched donor. METHODS This single-arm, open-label, phase 1-2 safety and feasibility study was done at two hospitals in Canada. The study had two parts. In part 1, patients received two cord blood units (one expanded with UM171 and one unmanipulated cord blood) until UM171-expanded cord blood demonstrated engraftment. Once engraftment was documented we initiated part 2, reported here, in which patients received a single UM171-expanded cord blood unit with a dose de-escalation design to determine the minimal cord blood unit cell dose that achieved prompt engraftment. Eligible patients were aged 3-64 years, weighed 12 kg or more, had a haematological malignancy with an indication for allogeneic hematopoietic stem cell transplant and did not have a suitable HLA-matched donor, and a had a Karnofsky performance status score of 70% or more. Five clinical sites were planned to participate in the study; however, only two study sites opened, both of which only treated adult patients, thus no paediatric patients (aged <18 years) were recruited. Patients aged younger than 50 years without comorbidities received a myeloablative conditioning regimen (cyclophosphamide 120 mg/kg, fludarabine 75 mg/m2, and 12 Gy total body irradiation) and patients aged older than 50 years and those with comorbidities received a less myeloablative conditioning regimen (cyclophosphamide 50 mg/kg, thiotepa 10 mg/kg, fludarabine 150 mg/m2, and 4 Gy total body irradiation). Patients were infused with the 7-day UM171-expanded CD34-positive cells and the lymphocyte-containing CD34-negative fraction. The primary endpoints were feasibility of UM171 expansion, safety of the transplant, kinetics of hematopoietic reconstitution (time to neutrophil and platelet engraftment) of UM171-expanded cord blood, and minimal pre-expansion cord blood unit cell dose that achieved prompt engraftment. We analysed feasibility in all enrolled patients and all other primary outcomes were analysed per protocol, in all patients who received single UM171-expanded cord blood transplantation. This trial has been completed and was registered with ClinicalTrials.gov, NCT02668315. FINDINGS Between Feb 17, 2016, and Nov 11, 2018, we enrolled 27 patients, four of whom received two cord blood units for safety purposes in part 1 of the study. 23 patients were subsequently enrolled in part 2 to receive a single UM171-expanded cord blood transplant and 22 patients received a single UM171-expanded cord blood transplantation. At data cutoff (Dec 31, 2018), median follow-up was 18 months (IQR 12-22). The minimal cord blood unit cell dose at thaw that achieved prompt engraftment as a single cord transplant after UM171 expansion was 0·52 × 105 CD34-positive cells. We successfully expanded 26 (96%) of 27 cord blood units with UM171. Among the 22 patients who received single UM171-expanded cord blood transplantation, median time to engraftment of 100 neutrophils per μL was 9·5 days (IQR 8-12), median time to engraftment of 500 neutrophils per μL was 18 days (12·5-20·0), and no graft failure occurred. Median time to platelet recovery was 42 days (IQR 35-47). The most common non-haematological adverse events were grade 3 febrile neutropenia (16 [73%] of 22 patients) and bacteraemia (nine [41%]). No unexpected adverse events were observed. One (5%) of 22 patients died due to treatment-related diffuse alveolar haemorrhage. INTERPRETATION Our preliminary findings suggest that UM171 cord blood stem cell expansion is feasible, safe, and allows for the use of small single cords without compromising engraftment. UM171-expanded cord blood might have the potential to overcome the disadvantages of other cord blood transplants while maintaining the benefits of low risk of chronic GVHD and relapse, and warrants further investigation in randomised trials. FUNDING Canadian Institutes of Health Research, Canadian Cancer Society and Stem Cell Network.
Collapse
Affiliation(s)
- Sandra Cohen
- Division of Hematology, Maisonneuve-Rosemont Hospital, Montreal, QC, Canada; Department of Medicine, Montreal, QC, Canada.
| | - Jean Roy
- Division of Hematology, Maisonneuve-Rosemont Hospital, Montreal, QC, Canada; Department of Medicine, Montreal, QC, Canada
| | - Silvy Lachance
- Division of Hematology, Maisonneuve-Rosemont Hospital, Montreal, QC, Canada; Department of Medicine, Montreal, QC, Canada
| | - Jean-Sébastien Delisle
- Division of Hematology, Maisonneuve-Rosemont Hospital, Montreal, QC, Canada; Department of Medicine, Montreal, QC, Canada
| | - Anne Marinier
- Drug Discovery Unit, Montreal, QC, Canada; ExCellThera, Montreal, QC, Canada
| | - Lambert Busque
- Division of Hematology, Maisonneuve-Rosemont Hospital, Montreal, QC, Canada; Department of Medicine, Montreal, QC, Canada
| | - Denis-Claude Roy
- Division of Hematology, Maisonneuve-Rosemont Hospital, Montreal, QC, Canada; Department of Medicine, Montreal, QC, Canada
| | - Frédéric Barabé
- Division of Hematology, CHU de Québec-Université Laval (Hôpital de l'Enfant-Jésus), Quebec, QC, Canada; Department of Medicine, Université Laval, Quebec, QC, Canada
| | - Imran Ahmad
- Division of Hematology, Maisonneuve-Rosemont Hospital, Montreal, QC, Canada; Department of Medicine, Montreal, QC, Canada
| | - Nadia Bambace
- Division of Hematology, Maisonneuve-Rosemont Hospital, Montreal, QC, Canada; Department of Medicine, Montreal, QC, Canada
| | - Léa Bernard
- Division of Hematology, Maisonneuve-Rosemont Hospital, Montreal, QC, Canada; Department of Medicine, Montreal, QC, Canada
| | - Thomas Kiss
- Division of Hematology, Maisonneuve-Rosemont Hospital, Montreal, QC, Canada; Department of Medicine, Montreal, QC, Canada
| | - Philippe Bouchard
- Department of Pharmacy, Maisonneuve-Rosemont Hospital, Montreal, QC, Canada
| | | | - Sévérine Landais
- Division of Hematology, Maisonneuve-Rosemont Hospital, Montreal, QC, Canada
| | - Fannie Larochelle
- Center of Excellence for Cellular Therapy, Maisonneuve-Rosemont Hospital, Montreal, QC, Canada
| | - Jalila Chagraoui
- Institute for Research in Immunology and Cancer, Université de Montréal, Montreal, QC, Canada
| | - Bernhard Lehnertz
- Institute for Research in Immunology and Cancer, Université de Montréal, Montreal, QC, Canada
| | - Sophie Corneau
- Institute for Research in Immunology and Cancer, Université de Montréal, Montreal, QC, Canada
| | - Elisa Tomellini
- Institute for Research in Immunology and Cancer, Université de Montréal, Montreal, QC, Canada
| | - Jeroen J A van Kampen
- Department of Viroscience, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Jan J Cornelissen
- Department of Hematology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | | | - Mégane Tanguay
- Department of Medicine, Montreal, QC, Canada; Institute for Research in Immunology and Cancer, Université de Montréal, Montreal, QC, Canada
| | - Qi Li
- Division of Hematology, Maisonneuve-Rosemont Hospital, Montreal, QC, Canada; Department of Medicine, Montreal, QC, Canada
| | - Sébastien Lemieux
- Molecular Genetics of Stem Cells Laboratory, and Department of Biochemistry and Molecular Medicine, Montreal, QC, Canada
| | - Peter W Zandstra
- ExCellThera, Montreal, QC, Canada; School of Biomedical Engineering and Michael Smith Laboratories, University of British Columbia, Vancouver, BC, Canada
| | - Guy Sauvageau
- Division of Hematology, Maisonneuve-Rosemont Hospital, Montreal, QC, Canada; Department of Medicine, Montreal, QC, Canada; Institute for Research in Immunology and Cancer, Université de Montréal, Montreal, QC, Canada; ExCellThera, Montreal, QC, Canada
| |
Collapse
|
13
|
Ngom M, Imren S, Maetzig T, Adair JE, Knapp DJHF, Chagraoui J, Fares I, Bordeleau ME, Sauvageau G, Leboulch P, Eaves C, Humphries RK. UM171 Enhances Lentiviral Gene Transfer and Recovery of Primitive Human Hematopoietic Cells. Mol Ther Methods Clin Dev 2018; 10:156-164. [PMID: 30101153 PMCID: PMC6077133 DOI: 10.1016/j.omtm.2018.06.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/24/2018] [Accepted: 06/28/2018] [Indexed: 11/19/2022]
Abstract
Enhanced gene transfer efficiencies and higher yields of transplantable transduced human hematopoietic stem cells are continuing goals for improving clinical protocols that use stemcell-based gene therapies. Here, we examined the effect of the HSC agonist UM171 on these endpoints in both in vitro and in vivo systems. Using a 22-hr transduction protocol, we found that UM171 significantly enhances both the lentivirus-mediated transduction and yield of CD34+ and CD34+CD45RA- hematopoietic cells from human cord blood to give a 6-fold overall higher recovery of transduced hematopoietic stem cells, including cells with long-term lympho-myeloid repopulating activity in immunodeficient mice. The ability of UM171 to enhance gene transfer to primitive cord blood hematopoietic cells extended to multiple lentiviral pseudotypes, gamma retroviruses, and non-integrating lentiviruses and to adult bone marrow cells. UM171, thus, provides an interesting reagent for improving the ex vivo production of gene-modified cells and for reducing requirements of virus for a broad range of applications.
Collapse
Affiliation(s)
- Mor Ngom
- Terry Fox Laboratory, British Columbia Cancer Agency, Vancouver BC V5Z 1L3, Canada
| | - Suzan Imren
- Terry Fox Laboratory, British Columbia Cancer Agency, Vancouver BC V5Z 1L3, Canada
| | - Tobias Maetzig
- Terry Fox Laboratory, British Columbia Cancer Agency, Vancouver BC V5Z 1L3, Canada
| | - Jennifer E Adair
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - David J H F Knapp
- Terry Fox Laboratory, British Columbia Cancer Agency, Vancouver BC V5Z 1L3, Canada
| | - Jalila Chagraoui
- Laboratory of Molecular Genetics of Stem Cells, Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, QC H3T 1J4, Canada
| | - Iman Fares
- Laboratory of Molecular Genetics of Stem Cells, Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, QC H3T 1J4, Canada
| | - Marie-Eve Bordeleau
- Laboratory of Molecular Genetics of Stem Cells, Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, QC H3T 1J4, Canada
| | - Guy Sauvageau
- Laboratory of Molecular Genetics of Stem Cells, Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, QC H3T 1J4, Canada
| | - Philippe Leboulch
- Atomic and Alternative Energy Commission, Université Paris-Sud, Fontenay-aux-Roses, Paris, France.,Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115, USA
| | - Connie Eaves
- Terry Fox Laboratory, British Columbia Cancer Agency, Vancouver BC V5Z 1L3, Canada.,Department of Medical Genetics, University of British Columbia, Vancouver BC V6T 1Z4, Canada.,Department of Medicine, University of British Columbia, Vancouver BC V6T 1Z4, Canada
| | - Richard Keith Humphries
- Terry Fox Laboratory, British Columbia Cancer Agency, Vancouver BC V5Z 1L3, Canada.,Department of Medicine, University of British Columbia, Vancouver BC V6T 1Z4, Canada
| |
Collapse
|
14
|
Simon L, Lavallée VP, Bordeleau ME, Krosl J, Baccelli I, Boucher G, Lehnertz B, Chagraoui J, MacRae T, Ruel R, Chantigny Y, Lemieux S, Marinier A, Hébert J, Sauvageau G. Chemogenomic Landscape of RUNX1-mutated AML Reveals Importance of RUNX1 Allele Dosage in Genetics and Glucocorticoid Sensitivity. Clin Cancer Res 2017; 23:6969-6981. [DOI: 10.1158/1078-0432.ccr-17-1259] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Revised: 07/07/2017] [Accepted: 08/24/2017] [Indexed: 11/16/2022]
|
15
|
Aucagne R, Girard S, Mayotte N, Lehnertz B, Lopes-Paciencia S, Gendron P, Boucher G, Chagraoui J, Sauvageau G. UBAP2L is amplified in a large subset of human lung adenocarcinoma and is critical for epithelial lung cell identity and tumor metastasis. FASEB J 2017; 31:5012-5018. [PMID: 28754713 DOI: 10.1096/fj.201601219rrr] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Accepted: 07/17/2017] [Indexed: 02/03/2023]
Abstract
The ubiquitin-associated protein 2-like (UBAP2L) gene remains poorly studied in human and mouse development. UBAP2L interacts with the Polycomb group protein B lymphoma Mo-MLV insertion region 1 homolog (BMI1) and determines the activity of mouse hematopoietic stem cells in vivo Here we show that loss of Ubap2l leads to disorganized respiratory epithelium of mutant neonates, which die of respiratory failure. We also show that UBAP2L overexpression leads to epithelial-mesenchymal transition-like phenotype in a non-small cell lung carcinoma (NSCLC) cell line. UBAP2L is amplified in 15% of human primary lung adenocarcinoma specimens. Such patients express higher levels of UBAP2L and show a reduction in survival when compared with those who do not have this gene amplification. Supporting a possible role for UBAP2L in lung tumor progression, NSCLC cells engineered to express low levels of this gene produce much smaller tumors in vivo than wild-type control cells. Together, these results suggest that UBAP2L contributes to epithelial lung cell identity in mice and that it plays an important role in human lung adenocarcinoma.-Aucagne, R., Girard, S., Mayotte, N., Lehnertz, B., Lopes-Paciencia, S., Gendron, P., Boucher, G., Chagraoui, J., Sauvageau, G. UBAP2L is amplified in a large subset of human lung adenocarcinoma and is critical for epithelial lung cell identity and tumor metastasis.
Collapse
Affiliation(s)
- Romain Aucagne
- Laboratory of Molecular Genetics of Stem Cells, Université de Montréal, Montreal, Québec, Canada
| | - Simon Girard
- Laboratory of Molecular Genetics of Stem Cells, Université de Montréal, Montreal, Québec, Canada
| | - Nadine Mayotte
- Laboratory of Molecular Genetics of Stem Cells, Université de Montréal, Montreal, Québec, Canada
| | - Bernhard Lehnertz
- Laboratory of Molecular Genetics of Stem Cells, Université de Montréal, Montreal, Québec, Canada
| | - Stéphane Lopes-Paciencia
- Laboratory of Molecular Genetics of Stem Cells, Université de Montréal, Montreal, Québec, Canada
| | - Patrick Gendron
- Bioinformatics Platform, Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montreal, Québec, Canada
| | - Geneviève Boucher
- Bioinformatics Platform, Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montreal, Québec, Canada
| | - Jalila Chagraoui
- Laboratory of Molecular Genetics of Stem Cells, Université de Montréal, Montreal, Québec, Canada
| | - Guy Sauvageau
- Laboratory of Molecular Genetics of Stem Cells, Université de Montréal, Montreal, Québec, Canada; .,Department of Medicine, Université de Montréal, Montreal, Québec, Canada; and.,Division of Hematology, Maisonneuve-Rosemont Hospital, Montreal, Québec, Canada
| |
Collapse
|
16
|
Gerby B, Veiga DFT, Krosl J, Nourreddine S, Ouellette J, Haman A, Lavoie G, Fares I, Tremblay M, Litalien V, Ottoni E, Kosic M, Geoffrion D, Ryan J, Maddox PS, Chagraoui J, Marinier A, Hébert J, Sauvageau G, Kwok BH, Roux PP, Hoang T. High-throughput screening in niche-based assay identifies compounds to target preleukemic stem cells. J Clin Invest 2016; 126:4569-4584. [PMID: 27797342 DOI: 10.1172/jci86489] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Accepted: 09/22/2016] [Indexed: 12/15/2022] Open
Abstract
Current chemotherapies for T cell acute lymphoblastic leukemia (T-ALL) efficiently reduce tumor mass. Nonetheless, disease relapse attributed to survival of preleukemic stem cells (pre-LSCs) is associated with poor prognosis. Herein, we provide direct evidence that pre-LSCs are much less chemosensitive to existing chemotherapy drugs than leukemic blasts because of a distinctive lower proliferative state. Improving therapies for T-ALL requires the development of strategies to target pre-LSCs that are absolutely dependent on their microenvironment. Therefore, we designed a robust protocol for high-throughput screening of compounds that target primary pre-LSCs maintained in a niche-like environment, on stromal cells that were engineered for optimal NOTCH1 activation. The multiparametric readout takes into account the intrinsic complexity of primary cells in order to specifically monitor pre-LSCs, which were induced here by the SCL/TAL1 and LMO1 oncogenes. We screened a targeted library of compounds and determined that the estrogen derivative 2-methoxyestradiol (2-ME2) disrupted both cell-autonomous and non-cell-autonomous pathways. Specifically, 2-ME2 abrogated pre-LSC viability and self-renewal activity in vivo by inhibiting translation of MYC, a downstream effector of NOTCH1, and preventing SCL/TAL1 activity. In contrast, normal hematopoietic stem/progenitor cells remained functional. These results illustrate how recapitulating tissue-like properties of primary cells in high-throughput screening is a promising avenue for innovation in cancer chemotherapy.
Collapse
|
17
|
Grote D, Moison C, Duhamel S, Chagraoui J, Girard S, Yang J, Mayotte N, Coulombe Y, Masson JY, Brown GW, Meloche S, Sauvageau G. E4F1 is a master regulator of CHK1-mediated functions. Cell Rep 2015; 11:210-9. [PMID: 25843717 DOI: 10.1016/j.celrep.2015.03.019] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2014] [Revised: 01/21/2015] [Accepted: 02/23/2015] [Indexed: 01/12/2023] Open
Abstract
It has been previously shown that the polycomb protein BMI1 and E4F1 interact physically and genetically in the hematopoietic system. Here, we report that E4f1 is essential for hematopoietic cell function and survival. E4f1 deletion induces acute bone marrow failure characterized by apoptosis of progenitors while stem cells are preserved. E4f1-deficient cells accumulate DNA damage and show defects in progression through S phase and mitosis, revealing a role for E4F1 in cell-cycle progression and genome integrity. Importantly, we showed that E4F1 interacts with and protects the checkpoint kinase 1 (CHK1) protein from degradation. Finally, defects observed in E4f1-deficient cells were fully reversed by ectopic expression of Chek1. Altogether, our results classify E4F1 as a master regulator of CHK1 activity that ensures high fidelity of DNA replication, thus safeguarding genome stability.
Collapse
Affiliation(s)
- David Grote
- Molecular Genetics of Stem Cells Laboratory, Institute for Research in Immunology and Cancer (IRIC), University of Montreal, Montreal, QC H3T 1J4, Canada
| | - Céline Moison
- Molecular Genetics of Stem Cells Laboratory, Institute for Research in Immunology and Cancer (IRIC), University of Montreal, Montreal, QC H3T 1J4, Canada
| | - Stéphanie Duhamel
- Signaling and Cell Growth Laboratory, Institute for Research in Immunology and Cancer (IRIC), University of Montreal, Montreal, QC H3T 1J4, Canada
| | - Jalila Chagraoui
- Molecular Genetics of Stem Cells Laboratory, Institute for Research in Immunology and Cancer (IRIC), University of Montreal, Montreal, QC H3T 1J4, Canada
| | - Simon Girard
- Molecular Genetics of Stem Cells Laboratory, Institute for Research in Immunology and Cancer (IRIC), University of Montreal, Montreal, QC H3T 1J4, Canada
| | - Jay Yang
- Department of Biochemistry and Donnelly Centre, University of Toronto, Toronto, ON M5S 3E1, Canada
| | - Nadine Mayotte
- Molecular Genetics of Stem Cells Laboratory, Institute for Research in Immunology and Cancer (IRIC), University of Montreal, Montreal, QC H3T 1J4, Canada
| | - Yan Coulombe
- Genome Stability Laboratory, CHU de Quebec Research Center, HDQ Pavilion, Oncology Axis, 9 McMahon, Québec City, QC G1R 2J6, Canada
| | - Jean-Yves Masson
- Genome Stability Laboratory, CHU de Quebec Research Center, HDQ Pavilion, Oncology Axis, 9 McMahon, Québec City, QC G1R 2J6, Canada; Department of Molecular Biology, Medical Biochemistry and Pathology, Laval University, Quebec City, QC G1V 0A6, Canada
| | - Grant W Brown
- Department of Biochemistry and Donnelly Centre, University of Toronto, Toronto, ON M5S 3E1, Canada
| | - Sylvain Meloche
- Signaling and Cell Growth Laboratory, Institute for Research in Immunology and Cancer (IRIC), University of Montreal, Montreal, QC H3T 1J4, Canada; Department of Pharmacology, University of Montreal, Montreal, QC H3C 3J7, Canada.
| | - Guy Sauvageau
- Molecular Genetics of Stem Cells Laboratory, Institute for Research in Immunology and Cancer (IRIC), University of Montreal, Montreal, QC H3T 1J4, Canada.
| |
Collapse
|
18
|
Fares I, Chagraoui J, Gareau Y, Gingras S, Ruel R, Mayotte N, Csaszar E, Knapp DJHF, Miller P, Ngom M, Imren S, Roy DC, Watts KL, Kiem HP, Herrington R, Iscove NN, Humphries RK, Eaves CJ, Cohen S, Marinier A, Zandstra PW, Sauvageau G. Cord blood expansion. Pyrimidoindole derivatives are agonists of human hematopoietic stem cell self-renewal. Science 2014; 345:1509-12. [PMID: 25237102 DOI: 10.1126/science.1256337] [Citation(s) in RCA: 412] [Impact Index Per Article: 41.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
The small number of hematopoietic stem and progenitor cells in cord blood units limits their widespread use in human transplant protocols. We identified a family of chemically related small molecules that stimulates the expansion ex vivo of human cord blood cells capable of reconstituting human hematopoiesis for at least 6 months in immunocompromised mice. The potent activity of these newly identified compounds, UM171 being the prototype, is independent of suppression of the aryl hydrocarbon receptor, which targets cells with more-limited regenerative potential. The properties of UM171 make it a potential candidate for hematopoietic stem cell transplantation and gene therapy.
Collapse
Affiliation(s)
- Iman Fares
- Molecular Genetics of Stem Cells Laboratory, Institute of Research in Immunology and Cancer (IRIC), University of Montreal, Montreal, QC, Canada
| | - Jalila Chagraoui
- Molecular Genetics of Stem Cells Laboratory, Institute of Research in Immunology and Cancer (IRIC), University of Montreal, Montreal, QC, Canada
| | - Yves Gareau
- Medicinal Chemistry, IRIC, University of Montreal, Montreal, QC, Canada
| | - Stéphane Gingras
- Medicinal Chemistry, IRIC, University of Montreal, Montreal, QC, Canada
| | - Réjean Ruel
- Medicinal Chemistry, IRIC, University of Montreal, Montreal, QC, Canada
| | - Nadine Mayotte
- Molecular Genetics of Stem Cells Laboratory, Institute of Research in Immunology and Cancer (IRIC), University of Montreal, Montreal, QC, Canada
| | - Elizabeth Csaszar
- Terrence Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, Toronto, ON, Canada
| | - David J H F Knapp
- Terry Fox Laboratory, British Columbia Cancer Agency and University of British Columbia, Vancouver, BC, Canada
| | - Paul Miller
- Terry Fox Laboratory, British Columbia Cancer Agency and University of British Columbia, Vancouver, BC, Canada
| | - Mor Ngom
- Terry Fox Laboratory, British Columbia Cancer Agency and University of British Columbia, Vancouver, BC, Canada
| | - Suzan Imren
- Terry Fox Laboratory, British Columbia Cancer Agency and University of British Columbia, Vancouver, BC, Canada
| | - Denis-Claude Roy
- Division of Hematology, Maisonneuve-Rosemont Hospital, Montreal, QC, Canada. Department of Medicine, Faculty of Medicine, Université de Montreal, Montreal, QC, Canada
| | - Kori L Watts
- Clinical Research Division, Fred Hutchinson Cancer Research Center and University of Washington, Seattle, WA, USA
| | - Hans-Peter Kiem
- Clinical Research Division, Fred Hutchinson Cancer Research Center and University of Washington, Seattle, WA, USA. Department of Medicine and Pathology, University of Washington, Seattle, WA, USA
| | - Robert Herrington
- Ontario Cancer Institute, University Health Network, Toronto, ON, Canada
| | - Norman N Iscove
- Ontario Cancer Institute, University Health Network, Toronto, ON, Canada. Department of Immunology, University of Toronto, Toronto, ON, Canada
| | - R Keith Humphries
- Terry Fox Laboratory, British Columbia Cancer Agency and University of British Columbia, Vancouver, BC, Canada
| | - Connie J Eaves
- Terry Fox Laboratory, British Columbia Cancer Agency and University of British Columbia, Vancouver, BC, Canada
| | - Sandra Cohen
- Division of Hematology, Maisonneuve-Rosemont Hospital, Montreal, QC, Canada. Department of Medicine, Faculty of Medicine, Université de Montreal, Montreal, QC, Canada
| | - Anne Marinier
- Medicinal Chemistry, IRIC, University of Montreal, Montreal, QC, Canada
| | - Peter W Zandstra
- Terrence Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, Toronto, ON, Canada
| | - Guy Sauvageau
- Molecular Genetics of Stem Cells Laboratory, Institute of Research in Immunology and Cancer (IRIC), University of Montreal, Montreal, QC, Canada. Division of Hematology, Maisonneuve-Rosemont Hospital, Montreal, QC, Canada. Department of Medicine, Faculty of Medicine, Université de Montreal, Montreal, QC, Canada.
| |
Collapse
|
19
|
Cellot S, Hope KJ, Chagraoui J, Sauvageau M, Deneault É, MacRae T, Mayotte N, Wilhelm BT, Landry JR, Ting SB, Krosl J, Humphries K, Thompson A, Sauvageau G. RNAi screen identifies Jarid1b as a major regulator of mouse HSC activity. Blood 2013; 122:1545-55. [PMID: 23777767 PMCID: PMC5289888 DOI: 10.1182/blood-2013-04-496281] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Histone methylation is a dynamic and reversible process proposed to directly impact on stem cell fate. The Jumonji (JmjC) domain-containing family of demethylases comprises 27 members that target mono-, di-, and trimethylated lysine residues of histone (or nonhistone) proteins. To evaluate their role in regulation of hematopoietic stem cell (HSC) behavior, we performed an in vivo RNAi-based functional screen and demonstrated that Jarid1b and Jhdm1f play opposing roles in regulation of HSC activity. Decrease in Jarid1b levels correlated with an in vitro expansion of HSCs with preserved long-term in vivo lymphomyeloid differentiation potential. Through RNA sequencing analysis, Jarid1b knockdown was associated with increased expression levels of several HSC regulators (Hoxa7, Hoxa9, Hoxa10, Hes1, Gata2) and reduced levels of differentiation-associated genes. shRNA against Jhdmlf, in contrast, impaired hematopoietic reconstitution of bone marrow cells. Together, our studies identified Jarid1b as a negative regulator of HSC activity and Jhdmlf as a positive regulator of HSC activity.
Collapse
Affiliation(s)
- Sonia Cellot
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, QC, Canada
- Faculty of Medicine, Université de Montréal, Montréal, QC, Canada
- Division of Hematology, Ste-Justine Hospital, Montréal, QC, Canada
| | - Kristin J. Hope
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, QC, Canada
| | - Jalila Chagraoui
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, QC, Canada
| | - Martin Sauvageau
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, QC, Canada
| | - Éric Deneault
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, QC, Canada
| | - Tara MacRae
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, QC, Canada
| | - Nadine Mayotte
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, QC, Canada
| | - Brian T. Wilhelm
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, QC, Canada
| | - Josette R. Landry
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, QC, Canada
| | - Stephen B. Ting
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, QC, Canada
- Monash University, Melbourne, Australia
| | - Jana Krosl
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, QC, Canada
| | - Keith Humphries
- Terry Fox Laboratory, British Columbia Cancer Agency, and Department of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Alexander Thompson
- Centre for Cancer Research and Cell Biology, Queen’s University Belfast, Northern Ireland
| | - Guy Sauvageau
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, QC, Canada
- Faculty of Medicine, Université de Montréal, Montréal, QC, Canada
- Division of Hematology, Maisonneuve-Rosemont Hospital, Montréal, QC, Canada
- Leukemia Cell Bank of Quebec, Maisonneuve-Rosemont Hospital, Montréal, QC, Canada
| |
Collapse
|
20
|
Schmidt E, Chagraoui J, Mayotte N, Krosl J, Pabst C, Sauvageau M, Müller-Tidow C, Sauvageau G. Lats 1 is a putative tumor suppressor in Hoxa9 / Meis induced leukemia. Exp Hematol 2013. [DOI: 10.1016/j.exphem.2013.05.076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
21
|
Herault O, Hope KJ, Deneault E, Mayotte N, Chagraoui J, Wilhelm BT, Cellot S, Sauvageau M, Andrade-Navarro MA, Hébert J, Sauvageau G. A role for GPx3 in activity of normal and leukemia stem cells. ACTA ACUST UNITED AC 2012; 209:895-901. [PMID: 22508837 PMCID: PMC3348115 DOI: 10.1084/jem.20102386] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
High levels of glutathione peroxidase 3 (GPx3) expression correlate with adverse prognosis in acute myeloid leukemia, and enhance activity of long-term repopulating hematopoietic stem cells in mice. The determinants of normal and leukemic stem cell self-renewal remain poorly characterized. We report that expression of the reactive oxygen species (ROS) scavenger glutathione peroxidase 3 (GPx3) positively correlates with the frequency of leukemia stem cells (LSCs) in Hoxa9+Meis1-induced leukemias. Compared with a leukemia with a low frequency of LSCs, a leukemia with a high frequency of LSCs showed hypomethylation of the Gpx3 promoter region, and expressed high levels of Gpx3 and low levels of ROS. LSCs and normal hematopoietic stem cells (HSCs) engineered to express Gpx3 short hairpin RNA (shRNA) were much less competitive in vivo than control cells. However, progenitor cell proliferation and differentiation was not affected by Gpx3 shRNA. Consistent with this, HSCs overexpressing Gpx3 were significantly more competitive than control cells in long-term repopulation experiments, and overexpression of the self-renewal genes Prdm16 or Hoxb4 boosted Gpx3 expression. In human primary acute myeloid leukemia samples, GPX3 expression level directly correlated with adverse prognostic outcome, revealing a potential novel target for the eradication of LSCs.
Collapse
Affiliation(s)
- Olivier Herault
- Institute for Research in Immunology and Cancer, University of Montreal, Montreal, Quebec, Canada
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
22
|
Simon C, Chagraoui J, Krosl J, Gendron P, Wilhelm B, Lemieux S, Boucher G, Chagnon P, Drouin S, Lambert R, Rondeau C, Bilodeau A, Lavallée S, Sauvageau M, Hébert J, Sauvageau G. A key role for EZH2 and associated genes in mouse and human adult T-cell acute leukemia. Genes Dev 2012; 26:651-6. [PMID: 22431509 DOI: 10.1101/gad.186411.111] [Citation(s) in RCA: 212] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
In this study, we show the high frequency of spontaneous γδ T-cell leukemia (T-ALL) occurrence in mice with biallelic deletion of enhancer of zeste homolog 2 (Ezh2). Tumor cells show little residual H3K27 trimethylation marks compared with controls. EZH2 is a component of the PRC2 Polycomb group protein complex, which is associated with DNA methyltransferases. Using next-generation sequencing, we identify alteration in gene expression levels of EZH2 and acquired mutations in PRC2-associated genes (DNMT3A and JARID2) in human adult T-ALL. Together, these studies document that deregulation of EZH2 and associated genes leads to the development of mouse, and likely human, T-ALL.
Collapse
Affiliation(s)
- Camille Simon
- The Leucegene Group, Institute for Research in Immunology and Cancer, University of Montreal, Montreal, Quebec H3T 1J4, Canada
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
23
|
Deneault E, Cellot S, Faubert A, Laverdure JP, Fréchette M, Chagraoui J, Mayotte N, Sauvageau M, Ting SB, Sauvageau G. A functional screen to identify novel effectors of hematopoietic stem cell activity. Cell 2009; 137:369-79. [PMID: 19379700 PMCID: PMC5770201 DOI: 10.1016/j.cell.2009.03.026] [Citation(s) in RCA: 105] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2008] [Revised: 01/19/2009] [Accepted: 03/16/2009] [Indexed: 12/22/2022]
Abstract
Despite tremendous progress made toward the identification of the molecular circuitry that governs cell fate in embryonic stem cells, genes controlling this process in the adult hematopoietic stem cell have proven to be more difficult to unmask. We now report the results of a novel gain-of-function screening approach, which identified a series of 18 nuclear factors that affect hematopoietic stem cell activity. Overexpression of ten of these factors resulted in an increased repopulating activity compared to unmanipulated cells. Interestingly, at least four of the 18 factors, Fos, Tcfec, Hmgb1, and Sfpi1, show non-cell-autonomous functions. The utilization of this screening method together with the creation of a database enriched for potential determinants of hematopoietic stem cell self-renewal will serve as a resource to uncover regulatory networks in these cells.
Collapse
Affiliation(s)
- Eric Deneault
- Molecular Genetics of Stem Cells Laboratory, Institute of Research in Immunology and Cancer (IRIC), University of Montreal, Montreal, Quebec H3C 3J7, Canada
| | - Sonia Cellot
- Molecular Genetics of Stem Cells Laboratory, Institute of Research in Immunology and Cancer (IRIC), University of Montreal, Montreal, Quebec H3C 3J7, Canada
| | - Amélie Faubert
- Molecular Genetics of Stem Cells Laboratory, Institute of Research in Immunology and Cancer (IRIC), University of Montreal, Montreal, Quebec H3C 3J7, Canada
| | - Jean-Philippe Laverdure
- Molecular Genetics of Stem Cells Laboratory, Institute of Research in Immunology and Cancer (IRIC), University of Montreal, Montreal, Quebec H3C 3J7, Canada
| | - Mélanie Fréchette
- Molecular Genetics of Stem Cells Laboratory, Institute of Research in Immunology and Cancer (IRIC), University of Montreal, Montreal, Quebec H3C 3J7, Canada
| | - Jalila Chagraoui
- Molecular Genetics of Stem Cells Laboratory, Institute of Research in Immunology and Cancer (IRIC), University of Montreal, Montreal, Quebec H3C 3J7, Canada
| | - Nadine Mayotte
- Molecular Genetics of Stem Cells Laboratory, Institute of Research in Immunology and Cancer (IRIC), University of Montreal, Montreal, Quebec H3C 3J7, Canada
| | - Martin Sauvageau
- Molecular Genetics of Stem Cells Laboratory, Institute of Research in Immunology and Cancer (IRIC), University of Montreal, Montreal, Quebec H3C 3J7, Canada
| | - Stephen B. Ting
- Molecular Genetics of Stem Cells Laboratory, Institute of Research in Immunology and Cancer (IRIC), University of Montreal, Montreal, Quebec H3C 3J7, Canada
| | - Guy Sauvageau
- Molecular Genetics of Stem Cells Laboratory, Institute of Research in Immunology and Cancer (IRIC), University of Montreal, Montreal, Quebec H3C 3J7, Canada
- Division of Hematology and Leukemia Cell Bank of Quebec (BCLQ), Maisonneuve-Rosemont Hospital, Montreal, Quebec H1T 2M4, Canada
| |
Collapse
|
24
|
Faubert A, Chagraoui J, Mayotte N, Fréchette M, Iscove NN, Humphries RK, Sauvageau G. Complementary and independent function for Hoxb4 and Bmi1 in HSC activity. Cold Spring Harb Symp Quant Biol 2008; 73:555-564. [PMID: 19022763 DOI: 10.1101/sqb.2008.73.030] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Determinants regulating short- and long-term repopulating hematopoietic stem cell (STR-HSC and LTR-HSC) self-renewal remain largely uncharacterized. To gain further insights into HSC self-renewal, we investigated possible genetic interactions between two well-recognized regulators of this process: Bmi1 and Hoxb4. Using complementation and overexpression strategies in mouse HSCs, we document that Bmi1 is not required for the in vivo expansion of fetal HSCs but is essential for the long-term maintenance of adult HSCs. Importantly, we show that Hoxb4 overexpression induces an expansion of Bmi1(-/-)STR-HSCs leading to a rescue of their repopulation defect. In contrast to Hoxb4, we also show that Bmi1 fails to induce HSC expansion ex vivo. Consistent with these results, we report high levels of Angptl3 and Cbx7 in Hoxb4- and Bmi1-transduced cells, respectively. Together, these results support the emerging concept that fate and sustainability of this fate are two critical components of self-renewal in adult stem cells such as HSCs.
Collapse
Affiliation(s)
- A Faubert
- Laboratory of Molecular Genetics of Hematopoietic Stem Cells, Institute for Research in Immunology and Cancer, University of Montréal, Montréal, Québec, Canada H3C 3J7
| | | | | | | | | | | | | |
Collapse
|
25
|
Louis I, Heinonen KM, Chagraoui J, Vainio S, Sauvageau G, Perreault C. The signaling protein Wnt4 enhances thymopoiesis and expands multipotent hematopoietic progenitors through beta-catenin-independent signaling. Immunity 2008; 29:57-67. [PMID: 18617424 DOI: 10.1016/j.immuni.2008.04.023] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2007] [Revised: 03/11/2008] [Accepted: 04/23/2008] [Indexed: 12/20/2022]
Abstract
Despite studies based on deletion or activation of intracellular components of the canonical Wingless related (Wnt) pathway, the role of Wnts in hematolymphopoiesis remains controversial. Using gain-of-function and loss-of-function models, we found that Wnt4 differentially affected diverse subsets of hematopoietic stem and progenitor cells. Bone-marrow and thymic Lin(-)Sca1(+)Kit(hi) cells (LSKs) were the key targets of Wnt4. In adult mice, Wnt4-induced expansion of Flt3(+) bone-marrow LSKs (lymphoid-primed multipotent progenitors) led to a sizeable accumulation of the most immature thymocyte subsets (upstream of beta-selection) and a major increase in thymopoiesis. Conversely, Wnt4(-/-) neonates showed low frequencies of bone-marrow LSKs and thymic hypocellularity. We provide compelling evidence that Wnt4 activates noncanonical (beta-catenin-independent) signaling and that its effects on hematopoietic cells are mainly non-cell-autonomous. Our work shows that Wnt4 overexpression has a unique ability to expand Flt3(+) LSKs in adults and demonstrates that noncanonical Wnt signaling regulates thymopoiesis.
Collapse
Affiliation(s)
- Isabelle Louis
- Institute for Research in Immunology and Cancer and, Université de Montréal, Montreal, QC H3C 3J7, Canada
| | | | | | | | | | | |
Collapse
|
26
|
Cellot S, Krosl J, Chagraoui J, Meloche S, Humphries RK, Sauvageau G. Sustained in vitro trigger of self-renewal divisions in Hoxb4hiPbx1(10) hematopoietic stem cells. Exp Hematol 2007; 35:802-16. [PMID: 17577929 PMCID: PMC2752385 DOI: 10.1016/j.exphem.2007.02.013] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Factors that trigger and sustain self-renewal divisions in tissue stem cells remain poorly characterized. By modulating the levels of Hoxb4 and its co-factor Pbxl in primary hematopoietic cells (Hoxb4hiPbxl(10) cells), we report an in vitro expansion of mouse hematopoietic stem cells (HSCs) by 105-fold over 2 weeks, with subsequent preservation of HSC properties. Clonal analyses of the hematopoietic system in recipients of expanded HSCs indicate that up to 70% of Hoxb4hiPbxl(10) stem cells present at initiation of culture underwent self-renewal in vitro. In this setting, Hoxb4 and its co-factor did not promote an increase in DNA synthesis, or a decrease in doubling time of Scal+Lin- cells when compared to controls. Q-PCR analyses further revealed a downregulation of Cdknlb (p27Kipl) and Mxdl (MadI) transcript levels in Hoxb4hiPbxl(l0) primitive cells, accompanied by a more subtle increase in c-myc and reduction in Ccnd3 (Cyclin D3). We thus put forward this strategy as an efficient in vitro HSC expansion tool, enabling a further step into the avenue of self-renewal molecular effectors.
Collapse
Affiliation(s)
- Sonia Cellot
- Laboratory of Molecular Genetics of Stem Cells, Institute for Research in Immunology and Cancer (IRIC), C.P. 6128 succursale Centre-Ville, Montréal, Québec H3C 3J7, Canada
| | - Jana Krosl
- Laboratory of Molecular Genetics of Stem Cells, Institute for Research in Immunology and Cancer (IRIC), C.P. 6128 succursale Centre-Ville, Montréal, Québec H3C 3J7, Canada
| | - Jalila Chagraoui
- Laboratory of Molecular Genetics of Stem Cells, Institute for Research in Immunology and Cancer (IRIC), C.P. 6128 succursale Centre-Ville, Montréal, Québec H3C 3J7, Canada
| | - Sylvain Meloche
- Signaling and Cell Growth, Institut de Recherche en Immunologie et Cancérologie (IRIC), C.P. 6128 succursale Centre-Ville, Montréal, Québec H3C 3J7, Canada
- Departments of Molecular Biology and Pharmacology, Université de Montréal
| | - R. Keith Humphries
- Terry Fox Laboratories, British Columbia Cancer Agency, Vancouver, British Columbia and Department of Medicine, University of British Columbia, Vancouver, British Columbia
| | - Guy Sauvageau
- Laboratory of Molecular Genetics of Stem Cells, Institute for Research in Immunology and Cancer (IRIC), C.P. 6128 succursale Centre-Ville, Montréal, Québec H3C 3J7, Canada
- Department of Medicine and Division of Hematology and Leukemia Cell Bank of Quebec, Maisonneuve-Rosemont Hospital, Montréal, Québec, Canada
| |
Collapse
|
27
|
Chagraoui J, Niessen SL, Lessard J, Girard S, Coulombe P, Sauvageau M, Meloche S, Sauvageau G. E4F1: a novel candidate factor for mediating BMI1 function in primitive hematopoietic cells. Genes Dev 2006; 20:2110-20. [PMID: 16882984 PMCID: PMC1536061 DOI: 10.1101/gad.1453406] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
The Polycomb group gene Bmi1 is essential for the proliferation of neural and hematopoietic stem cells. Much remains to be learned about the pathways involved in the severe hematopoietic phenotype observed in Bmi1 homozygous mutant mice except for the fact that loss of p53 or concomitant loss of p16(Ink4a) and p19(Arf) functions achieves only a partial rescue. Here we report the identification of E4F1, an inhibitor of cellular proliferation, as a novel BMI1-interacting partner in hematopoietic cells. We provide evidence that Bmi1 and E4f1 genetically interact in the hematopoietic compartment to regulate cellular proliferation. Most importantly, we demonstrate that reduction of E4f1 levels through RNA interference mediated knockdown is sufficient to rescue the clonogenic and repopulating ability of Bmi1(-/-) hematopoietic cells up to 3 mo post-transplantation. Using cell lines and MEF, we also demonstrate that INK4A/ARF and p53 are not essential for functional interaction between Bmi1 and E4f1. Together, these findings identify E4F1 as a key modulator of BMI1 activity in primitive hematopoietic cells.
Collapse
Affiliation(s)
- Jalila Chagraoui
- Laboratory of Molecular Genetics of Hematopoietic Stem Cells, Institut de Recherche en Immunologie et Cancérologie (IRIC), CP 6128 succursale Centre-Ville, Montréal, Québec, Canada
| | | | | | | | | | | | | | | |
Collapse
|
28
|
Kieusseian A, Chagraoui J, Kerdudo C, Mangeot PE, Gage PJ, Navarro N, Izac B, Uzan G, Forget BG, Dubart-Kupperschmitt A. Expression of Pitx2 in stromal cells is required for normal hematopoiesis. Blood 2006; 107:492-500. [PMID: 16195330 PMCID: PMC1895608 DOI: 10.1182/blood-2005-02-0529] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2005] [Accepted: 07/20/2005] [Indexed: 11/20/2022] Open
Abstract
Although the expression of Pitx2, a bicoid family homeodomain transcription factor, is highly regulated during hematopoiesis, its function during this process was not documented; we thus studied hematopoiesis in Pitx2-null mice. We found that Pitx2(-/-) embryos display hypoplastic livers with reduced numbers of hematopoietic cells, but these cells had normal hematopoietic potential, as evidenced by colony-forming assays, immature progenitor cell assays, and long-term repopulation assays. Because the microenvironment is also crucial to the development of normal hematopoiesis, we established Pitx2(-/-) and Pitx2(+/+) stromas from fetal liver and studied their hematopoietic supportive capacity. We showed that the frequency of cobblestone area-forming cells was 4-fold decreased when using Pitx2(-/-) stromal cells compared with Pitx2(+/+) stromal cells, whatever the Pitx2 genotype of hematopoietic cells tested in this assay. This defect was rescued by expression of Pitx2 into Pitx2(-/-) fetal liver stromal cells, demonstrating a major and direct role of Pitx2 in the hematopoietic supportive capacity of fetal liver stroma. Finally, we showed a reduced capacity of MS5 stromal cells expressing Pitx2 RNAi to support human hematopoiesis. Altogether these data showed that Pitx2 has major functions in the hematopoietic supportive capacity of fetal liver and adult bone marrow stromal cells.
Collapse
|
29
|
Bompais H, Chagraoui J, Canron X, Crisan M, Liu XH, Anjo A, Tolla-Le Port C, Leboeuf M, Charbord P, Bikfalvi A, Uzan G. Human endothelial cells derived from circulating progenitors display specific functional properties compared with mature vessel wall endothelial cells. Blood 2003; 103:2577-84. [PMID: 14630797 DOI: 10.1182/blood-2003-08-2770] [Citation(s) in RCA: 206] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Endothelial progenitor cells (EPCs) were shown to be present in systemic circulation and cord blood. We investigated whether EPCs display specific properties compared with mature endothelial cells. Human cord blood CD34+ cells were isolated and adherent cells were amplified under endothelial conditions. Expression of specific markers identified them as endothelial cells, also called endothelial progenitor-derived cells (EPDCs). When compared to mature endothelial cells, human umbilical vein endothelial cells (HUVECs) and human bone marrow endothelial cells (HBMECs), endothelial markers, were expressed to the same extent except for KDR, which is expressed more in EPDCs. They display a higher proliferation potential. Functional studies demonstrated that EPDCs were more sensitive to angiogenic factors, which afford these cells greater protection against cell death compared with HUVECs. Moreover, EPDCs exhibit more hematopoietic supportive activity than HUVECs. Finally, studies in nonobese diabetic/severe combined immunodeficiency (NOD/SCID) mice demonstrated that human circulating EPCs are able to colonize a Matrigel plug. EPDCs display the morphology and phenotype of endothelial cells. Their functional features indicate, however, that although these cells have undergone some differentiation steps, they still have the properties of immature cells, suggesting greater tissue repair capabilities. Future use of in vitro amplified peripheral blood EPDCs may constitute a challenging strategy for cell therapy.
Collapse
Affiliation(s)
- Heidi Bompais
- INSERM U506, Hôpital Paul Brousse, Villejuif, France
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
30
|
Abstract
Liver becomes the predominant site of hematopoiesis by 11.5 dpc (days after coitus) in the mouse and 15 gestational weeks in humans and stays so until the end of gestation. The reason the liver is the major hematopoietic site during fetal life is not clear. In this work, we tried to define which of the fetal liver microenvironmental cell populations would be associated with the development of hematopoiesis and found that a population of cells with mixed endodermal and mesodermal features corresponded to hematopoietic-supportive fetal liver stroma. Stromal cells generated from primary cultures or stromal lines from mouse or human fetal liver in the hematopoietic florid phase expressed both mesenchymal markers (vimentin, osteopontin, collagen I, alpha smooth muscle actin, thrombospondin-1, EDa fibronectin, calponin, Stro-1 antigens, myocyte-enhancer factor 2C) and epithelial (alpha-fetoprotein, cytokeratins 8 and 18, albumin, E-cadherin, hepatocyte nuclear factor 3 alpha) markers. Such a cell population fits with the description of cells in epithelial-to-mesenchymal transition (EMT), often observed during development, including that of the liver. The hematopoietic supportive capacity of EMT cells was lost after hepatocytic maturation, induced by oncostatin M in the cell line AFT024. EMT cells were observed in the fetal liver microenvironment during the hematopoietic phase but not in nonhematopoietic liver by the end of gestation and in the adult. EMT cells represent a novel stromal cell type that may be generated from hepatic endodermal or mesenchymal stem cells or even from circulating hematopoietic stem cells (HSCs) seeding the liver rudiment.
Collapse
|
31
|
Albanese P, Chagraoui J, Charon M, Cocault L, Dusanter-Fourt I, Romeo PH, Uzan G. Forced expression of p21 in GPIIb-p21 transgenic mice induces abnormalities in the proliferation of erythroid and megakaryocyte progenitors and primitive hematopoietic cells. Exp Hematol 2002; 30:1263-72. [PMID: 12423679 DOI: 10.1016/s0301-472x(02)00933-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
OBJECTIVE p21(WAF1/Cip/kip) and p27(Kip1) are cyclin-dependant kinase inhibitors controlling cell-cycle exit and differentiation of numerous cell types. Among hematopoietic cells, megakaryocytes express high levels of p21, while in erythroid cells, p27(Kip1) is predominant. As p21 and p27 could display overlapping functions and as megakaryocytes and erythroid cells derive from a bipotent progenitor, we developed an in vivo model to determine the specific role of p21 in controlling the proliferation/differentiation balance of erythroid and megakaryocytic progenitors. METHODS Transgenic mice that overexpressed p21 under the control of the human GPIIb promoter in early progenitors and along megakaryocytic differentiation were generated. Different subsets of hematopoietic progenitors (BFU and CFU) and primitive cells (CAFC, LTC-IC) were analyzed by methylcellulose assay. Phenotypic evolution and clonogenic properties of the lin(-) population were analyzed along erythroid and megakaryocytic differentiation. RESULTS We observed p21 ectopic expression in early hematopoietic progenitors (lin(-)Sca(+)), megakaryocytes, and, to a lesser extent, erythroid cells. This expression induced an important decrease in the number of CFU-MK, BFU-E, CFU-E, primitive progenitors (CAFC day 35), and LTC-IC, but did not affect the maturation process of these cells and the blood cell count. CONCLUSIONS We show that variation of p21 expression level changes the fate of hematopoietic cells by favoring either proliferation or differentiation pathways. This effect of p21 is exerted not only at the level of primitive progenitors but also in more mature progenitors. However, in vivo, a systemic compensation mechanism is most likely activated in response to variations of the flow of progenitor production.
Collapse
|
32
|
Blazsek I, Chagraoui J, Péault B. Ontogenic emergence of the hematon, a morphogenetic stromal unit that supports multipotential hematopoietic progenitors in mouse bone marrow. Blood 2000; 96:3763-71. [PMID: 11090058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023] Open
Abstract
Development of the full repertoire of hematopoietic-lymphopoietic cells from a single stem cell requires specific contacts with stromal cells. The spatio-temporal organization of these cell associations in the bone marrow in ontogeny is, however, not well understood. In the adult, 10% of marrow cells form a cohort of compact aggregates, the hematon. In the hematon mesenchymal cells (Stro-1(+)), perivascular lipocytes (desmin(+)), endothelial cells (CD34(+), Flk-1(+), Sca-1(+)), and macrophages amalgamate with the hematopoietic progenitors long-term culture-initiating cells (LTC-IC), cobblestone area-forming cell (CAFC), high-proliferative-potential colony-forming unit (HPP-CFU), granulocyte-macrophage (GM)-CFU, and burst-forming unit-erythroid (BFU-E). During endochondral ossification of the femur, GM-CFU and day 7 CAFC numbers increased progressively from day 17 of gestation, but primitive, day 35 LTC-IC appeared from postnatal day 2. Unexpectedly, bone marrow (BM) taken between embryonic day 17 and day 5 was unable to support myeloid cell production in long-term cultures or to support day 35 LTC-IC growth. However, a gain in stromal cell competence occurred between days 7 and 10, which was correlated with the emergence of hematon in the BM. Thus, acquisition of hematopoietic competence by BM lags behind for approximately 10 days after the initial hematopoietic cell influx. In the adult, the hematon fraction was 3.7-fold enriched in day 35 LTC-IC over the buffy coat. It produced more GM-CFU and HPP-CFU in myeloid culture and more B cells in lymphopoietic "switch" cultures. It is reported that stromal hematopoietic units named hematons are specific morphogenetic structures that emerge at a well-defined postnatal stage of development in long bones, delineate discrete territories for hematopoietic stem cell seeding and development, embody the most productive hematogenous compartment in the BM, and probably enclose a morphogenetic organizer. (Blood. 2000;96:3763-3771)
Collapse
Affiliation(s)
- I Blazsek
- INSERM Unité 506, Hôpital Paul Brousse, Villejuif, France.
| | | | | |
Collapse
|