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Rambaldi B, Diral E, Donsante S, Di Marzo N, Mottadelli F, Cardinale L, Dander E, Isimbaldi G, Pioltelli P, Biondi A, Riminucci M, D'Amico G, Elli EM, Pievani A, Serafini M. Heterogeneity of the bone marrow niche in patients with myeloproliferative neoplasms: ActivinA secretion by mesenchymal stromal cells correlates with the degree of marrow fibrosis. Ann Hematol 2020; 100:105-116. [PMID: 33089365 DOI: 10.1007/s00277-020-04306-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Accepted: 10/15/2020] [Indexed: 01/19/2023]
Abstract
Mesenchymal stromal cells (MSCs) represent an essential component of the bone marrow (BM) niche and display disease-specific alterations in several myeloid malignancies. The aim of this work was to study possible MSC abnormalities in Philadelphia-negative myeloproliferative neoplasms (MPNs) in relationship to the degree of BM fibrosis. MSCs were isolated from BM of 6 healthy donors (HD) and of 23 MPN patients, classified in 3 groups according to the diagnosis and the grade of BM fibrosis: polycythemia vera and essential thrombocythemia (PV/ET), low fibrosis myelofibrosis (LF-MF), and high fibrosis MF (HF-MF). MSC cultures were established from 21 of 23 MPN patients. MPN-derived MSCs did not exhibit any functional impairment in their adipogenic/osteogenic/chondrogenic differentiation potential and displayed a phenotype similar to HD-derived MSCs but with a decreased expression of CD146. All MPN-MSC lines were negative for the patient-specific hematopoietic clone mutations (JAK2, MPL, CALR). MSCs derived from HF-MF patients displayed a reduced clonogenic potential and a lower growth kinetic compared to MSCs from HD, LF-MF, and PV/ET patients. mRNA levels of hematopoiesis regulatory molecules were unaffected in MSCs from HF-MF compared to HD. Finally, in vitro ActivinA secretion by MSCs was increased in HF-MF compared to LF-MF patients, in association with a lower hemoglobin value. Increased ActivinA immunolabeling on stromal cells and erythroid precursors was also observed in HF-MF BM biopsies. In conclusion, higher grade of BM fibrosis is associated with functional impairment of MSCs and the increased secretion of ActivinA may represent a suitable target for anemia treatment in MF patients.
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Affiliation(s)
- Benedetta Rambaldi
- Centro Ricerca M. Tettamanti, Department of Pediatrics, University of Milano-Bicocca, Monza, Italy.,Department of Hematology, San Gerardo Hospital, University of Milano-Bicocca, Monza, Italy.,Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA, USA
| | - Elisa Diral
- Centro Ricerca M. Tettamanti, Department of Pediatrics, University of Milano-Bicocca, Monza, Italy.,Department of Hematology, San Gerardo Hospital, University of Milano-Bicocca, Monza, Italy.,Hematology Department, ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy
| | | | - Noemi Di Marzo
- Centro Ricerca M. Tettamanti, Department of Pediatrics, University of Milano-Bicocca, Monza, Italy
| | - Federica Mottadelli
- Centro Ricerca M. Tettamanti, Department of Pediatrics, University of Milano-Bicocca, Monza, Italy
| | - Lucia Cardinale
- Centro Ricerca M. Tettamanti, Department of Pediatrics, University of Milano-Bicocca, Monza, Italy
| | - Erica Dander
- Centro Ricerca M. Tettamanti, Department of Pediatrics, University of Milano-Bicocca, Monza, Italy
| | - Giuseppe Isimbaldi
- Department of Pathology, San Gerardo Hospital, University of Milano-Bicocca, Monza, Italy.,Department of Pathology, ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy
| | - Pietro Pioltelli
- Department of Hematology, San Gerardo Hospital, University of Milano-Bicocca, Monza, Italy
| | - Andrea Biondi
- Department of Pediatrics, Fondazione MBBM/San Gerardo Hospital, Monza, Italy
| | - Mara Riminucci
- Department of Molecular Medicine, Sapienza University, Rome, Italy
| | - Giovanna D'Amico
- Centro Ricerca M. Tettamanti, Department of Pediatrics, University of Milano-Bicocca, Monza, Italy
| | - Elena Maria Elli
- Department of Hematology, San Gerardo Hospital, University of Milano-Bicocca, Monza, Italy.
| | - Alice Pievani
- Centro Ricerca M. Tettamanti, Department of Pediatrics, University of Milano-Bicocca, Monza, Italy
| | - Marta Serafini
- Centro Ricerca M. Tettamanti, Department of Pediatrics, University of Milano-Bicocca, Monza, Italy.
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