scholarly journals Quantification and Comprehensive Analysis of Mesenchymal Stromal Cells in Bone Marrow Samples from Sickle Cell Disease Patients with Osteonecrosis

2020 ◽  
Vol 2020 ◽  
pp. 1-12
Author(s):  
Tiago O. Ribeiro ◽  
Paula B. Daltro ◽  
Gildasio Cerqueira Daltro ◽  
Songeli M. Freire ◽  
Roberto Meyer ◽  
...  

The potential use of bone marrow mesenchymal stromal cells (BM-MSCs) for the treatment of osteonecrosis in sickle cell disease (SCD) patients is increasing. However, convenient BM-MSC quantification and functional property assays are critical factors for cell-based therapies yet to be optimized. This study was designed to quantify the MSC population in bone marrow (BM) samples from SCD patients with osteonecrosis (SCD group) and patients with osteoarticular complications not related to SCD (NS group), using flow cytometry for CD271+CD45-/low cell phenotype and CFU-F assay. We also compared expanded BM-MSC osteogenic differentiation, migration, and cytokine secretion potential between these groups. The mean total cell number, CFU-F count, and CD271+CD45-/low cells in BM mononuclear concentrate were significantly higher in SCD than in NS patients. A significant correlation between CD271+CD45-/low cell number and CFU-F counts was found in SCD ( r = 0.7483 ; p = 0.0070 ) and NS ( r = 0.7167 ; p = 0.0370 ) BM concentrates. An age-related quantitative reduction of CFU-F counts and CD271+CD45-/low cell number was noted. Furthermore, no significant differences in the morphology, replicative capacity, expression of surface markers, multidifferentiation potential, and secretion of cytokines were found in expanded BM-MSCs from SCD and NS groups after in vitro culturing. Collectively, this work provides important data for the suitable measurement and expansion of BM-MSC in support to advanced cell-based therapies for SCD patients with osteonecrosis.

2016 ◽  
Vol 22 (3) ◽  
pp. S148-S149
Author(s):  
Elizabeth Stenger ◽  
Raghavan Chinnadurai ◽  
Shala Yuan ◽  
Marco Garcia ◽  
Lakshmanan Krishnamurti ◽  
...  

Blood ◽  
2021 ◽  
Author(s):  
Alice Tang ◽  
Ana Nicolle Strat ◽  
Mahmudur Rahman ◽  
Helen Zhang ◽  
Weili Bao ◽  
...  

Sickle Cell Disease (SCD) is characterized by hemolytic anemia, which can trigger oxidative stress, inflammation, and tissue injury that contributes to disease complications. Bone marrow mesenchymal stromal cells (MSCs) tightly regulate hematopoietic stem cell (HSC) homeostasis in health and disease but their functionality in SCD remains unclear. We identified for the first time murine SCD MSCs to have altered gene signatures, reduced stem cell properties, and increased oxidative stress, due in part to hemolysis. Murine SCD MSCs had lower HSC maintenance ability in vitro and in vivo as manifested by increased HSC mobilization and decreased HSC engraftment following transplant. Activation of TLR4 through p65 in MSCs further contributed to MSC dysfunction. Transfusions led to improved MSC and HSC oxidative state in SCD mice. Improving the regulation between MSCs and HSCs has vital implications for enhancing clinical HSC transplantation and gene therapy outcomes and for identification of new molecular targets for alleviating SCD complications.


2017 ◽  
Vol 23 (5) ◽  
pp. 736-745 ◽  
Author(s):  
Elizabeth O. Stenger ◽  
Raghavan Chinnadurai ◽  
Shala Yuan ◽  
Marco Garcia ◽  
Dalia Arafat ◽  
...  

Cytotherapy ◽  
2017 ◽  
Vol 19 (5) ◽  
pp. S45
Author(s):  
E. Stenger ◽  
R. Chinnadurai ◽  
S. Yuan ◽  
M. Garcia ◽  
D. Arafat ◽  
...  

Blood ◽  
2009 ◽  
Vol 114 (22) ◽  
pp. 1521-1521
Author(s):  
Lewis L. Hsu ◽  
Valeriani Bead ◽  
Lita A. Freeman ◽  
Gregory J. Kato ◽  
James G Taylor ◽  
...  

Abstract Abstract 1521 Poster Board I-544 Epidemiologic observations associate low levels of Apolipoprotein A-1 (ApoA-I) and low high density lipoprotein (HDL) with greater prevalence of pulmonary hypertension in sickle cell patients. Sickle cell mice with knockout of apoliproteins have greater pulmonary hypertension and endothelial dysfunction than sickle cell mice with wild-type levels of ApoA-I, and they have further worsening of the global dysregulation of the nitric oxide axis (NO) seen in sickle vasculopathy. Ou et al. (Circulation 2003; 107(18):2337-41) showed that chronic administration (3-4 weeks) of the ApoA-I mimetic L-4F improves vasodilation in hypercholesterolemic and sickle mice. Remaley et al. (Circulation 2006;114:II_23) showed atheroprotective effects after a single (1mg/mouse) intravenous administration of the ApoA-I mimetic peptide 5A as a result of increased reverse cholesterol transfer. These preclinical data provide a mechanistic basis for the effects of ApoA-I in sickle cell disease and suggest that ApoA-I mimetics deserve further study as a potential therapy for sickle cell disease. However, it is unknown whether acute administration of an ApoA-I mimetic has any efficacy for sickle cell disease, and whether all ApoA-I mimetic peptides will be helpful. We hypothesized that acute administration of ApoA-I mimetic could improve endothelial dysfunction in sickle cell mouse models. Bone marrow harvested from Berkeley sickle cell mouse donors and hemizygote non-sickling control mice were used to generate three groups of mice after myeloablative irradiation of wild-type C57BL6 recipient mice. Three million cells whole marrow was injected per mouse. Mice were fully engrafted by 3 months. Hemoglobin analysis showed one group produced only sickle RBC, another group only hemizygote RBC, and a third group were mixed chimeras with 30% sickle RBC and 70% hemizygote RBC (intended to model a sickle cell patient on chronic transfusion). Pulse-wave velocities, a measure of arterial stiffness, showed no improvement after IV injection of the ApoA-I mimetic peptide, 5A-POPC (170 mcl of 8.6 mg/ml). Aortic rings prepared from mice of all three groups showed blunted relaxation response to acetylcholine and sodium nitroprusside, as expected for abnormal nitric oxide bioavailability - these vasorelaxation responses were not significantly different in the absence vs. presence of 5A-POPC incubation in vitro. These results agree with our previous observation that sickle bone marrow transplanted into transgenic mice overexpressing ApoA-I had no difference in vasculopathy from sickle bone marrow transplanted into wild-type mice We conclude that acute exposure to this ApoA-I mimetic, either in vivo or in vitro, is not sufficient to relieve the vasculopathy of sickle cell mouse models. Higher doses or long term therapy may be necessary for benefit. An alternative explanation is that ApoA-I mimetic peptides differ in their benefit for sickle cell vasculopathy, and that the key property is the high level of oxidant scavenging by L-4F rather than cholesterol removal by 5A-POPC. Future studies can determine whether the cardiovascular benefits of ApoA-I mimetics correlate with their antioxidant function. Disclosures No relevant conflicts of interest to declare.


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
S. Marozin ◽  
B. Simon-Nobbe ◽  
S. Irausek ◽  
L. W. K. Chung ◽  
G. Lepperdinger

AbstractThe human fetal osteoblast cell line (hFOB 1.19) has been proposed as an accessible experimental model for study of osteoblast biology relating to drug development and biomaterial engineering. For their multilineage differentiation potential, hFOB has been compared to human mesenchymal progenitor cells and used to investigate bone-metabolism in vitro. Hereby, we studied whether and to what extent the conditionally immortalized cell line hFOB 1.19 can serve as a surrogate model for bone-marrow derived mesenchymal stromal cells (bmMSC). hFOB indeed exhibit specific characteristics reminiscent of bmMSC, as colony formation, migration capacity and the propensity to grow as multicellular aggregates. After prolonged culture, in contrast to the expected effect of immortalization, hFOB acquired a delayed growth rate. In close resemblance to bmMSC at increasing passages, also hFOB showed morphological abnormalities, enlargement and finally reduced proliferation rates together with enhanced expression of the cell cycle inhibitors p21 and p16. hFOB not only have the ability to undergo multilineage differentiation but portray several important aspects of human bone marrow mesenchymal stromal cells. Superior to primary MSC and osteoblasts, hFOB enabled the generation of continuous cell lines. These provide an advanced basis for investigating age-related dysfunctions of MSCs in an in vitro 3D-stem cell microenvironment.


2015 ◽  
Vol 35 (suppl_1) ◽  
Author(s):  
Erica M Sparkenbaugh ◽  
Kasemsiri Chandarajoti ◽  
Nigel S Key ◽  
Andras Gruber ◽  
Nigel Mackman ◽  
...  

Sickle cell disease (SCD) is associated with activation of coagulation and vascular inflammation. We previously demonstrated that, in mouse models of SCD, tissue factor (TF) expressed on leukocytes activates coagulation and contributes to inflammation via microvascular thrombosis, whereas non-coagulant form of TF expressed by endothelial cells mediates factor Xa (FXa)-PAR2 signalling and contributes to inflammation via IL-6 expression. We also showed that both rivaroxaban and dabigatran, oral inhibitors of FXa and thrombin, attenuated the hypercoagulable state in sickle mice. It has been proposed that anticoagulants that target the intrinsic coagulation pathway may be associated with a lower risk of bleeding compared to targeting the extrinsic or common coagulation pathways. Therefore, we tested if the intrinsic pathway contributes to the activation of coagulation in sickle cell mice. Bone marrow from sickle (SS) and non-sickle (AA) Townes mice was transplanted into wild-type (WT) (n=18 AA, 15 SS), FXII-/- (n=14 AA, 22 SS), or FXI-/- (n=21 AA, 23 SS) recipients (all on C57Bl/6 genetic background). In addition, bone marrow from AA or SS mice was transplanted into high molecular weight kininogen (HK)+/+ (n=17 AA, 16 SS) or HK-/- (n=10 AA, 19 SS) mice. All mice were used for experiments 5 months after BMT. Thrombin generation, measured by plasma thrombin anti-thrombin (TAT) levels, was increased in WT mice injected with SS bone marrow (WT/BMSS) compared to WT/BMAA mice (4.4±0.7 vs 2.6±0.3 ng/mL, p<0.05, mean ± S.E.M), however neither FXII nor FXI deficiency affected this parameter. Consistent with these data, inhibition of FXIIa-dependent activation of FXI with 14E11 antibody also did not reduce plasma TAT levels in SS Townes mice. Interestingly, elevated plasma TAT levels observed in HK+/+/BMSS mice was significantly reduced in HK-/-/BMSS mice (4.8±0.5 versus 3.48±0.2 ng/mL, p<0.05). These data indicate that HK, but not FXII and FXI, contributes to thrombin generation in SCD at steady state of disease. In vitro, HK fragments induce TF expression on monocytes via activation of CD11b/18. We are now investigating if inhibition of HK fragments-induced TF expression on monocytes may attenuate the hypercoagulabIe state in SCD mice without impacting hemostasis.


2015 ◽  
Vol 15 (3) ◽  
pp. 584-594 ◽  
Author(s):  
Angélique Lebouvier ◽  
Alexandre Poignard ◽  
Laura Coquelin-Salsac ◽  
Julie Léotot ◽  
Yasuhiro Homma ◽  
...  

Cytotherapy ◽  
2015 ◽  
Vol 17 (6) ◽  
pp. S46
Author(s):  
Elizabeth Stenger ◽  
Shala Yuan ◽  
Marco Garcia ◽  
Ian B. Copland ◽  
Jacques Galipeau

2017 ◽  
Vol 26 (9) ◽  
pp. 1520-1529 ◽  
Author(s):  
Payal Ganguly ◽  
Jehan J. El-Jawhari ◽  
Peter V. Giannoudis ◽  
Agata N. Burska ◽  
Frederique Ponchel ◽  
...  

Aging at the cellular level is a complex process resulting from accumulation of various damages leading to functional impairment and a reduced quality of life at the level of the organism. With a rise in the elderly population, the worldwide incidence of osteoporosis (OP) and osteoarthritis (OA) has increased in the past few decades. A decline in the number and “fitness” of mesenchymal stromal cells (MSCs) in the bone marrow (BM) niche has been suggested as one of the factors contributing to bone abnormalities in OP and OA. It is well recognized that MSCs in vitro acquire culture-induced aging features such as gradual telomere shortening, increased numbers of senescent cells, and reduced resistance to oxidative stress as a result of serial population doublings. In contrast, there is only limited evidence that human BM-MSCs “age” similarly in vivo. This review compares the various aspects of in vitro and in vivo MSC aging and suggests how our current knowledge on rejuvenating cultured MSCs could be applied to develop future strategies to target altered bone formation processes in OP and OA.


Sign in / Sign up

Export Citation Format

Share Document