scholarly journals PD-L1/PD-1 Pattern of Expression Within the Bone Marrow Immune Microenvironment in Smoldering Myeloma and Active Multiple Myeloma Patients

2021 ◽  
Vol 11 ◽  
Author(s):  
Federica Costa ◽  
Rosanna Vescovini ◽  
Valentina Marchica ◽  
Paola Storti ◽  
Laura Notarfranchi ◽  
...  

BackgroundThe PD-1/PD-L1 axis has recently emerged as an immune checkpoint that controls antitumor immune responses also in hematological malignancies. However, the use of anti-PD-L1/PD-1 antibodies in multiple myeloma (MM) patients still remains debated, at least in part because of discordant literature data on PD-L1/PD-1 expression by MM cells and bone marrow (BM) microenvironment cells. The unmet need to identify patients which could benefit from this therapeutic approach prompts us to evaluate the BM expression profile of PD-L1/PD-1 axis across the different stages of the monoclonal gammopathies.MethodsThe PD-L1/PD-1 axis was evaluated by flow cytometry in the BM samples of a total cohort of 141 patients with monoclonal gammopathies including 24 patients with Monoclonal Gammopathy of Undetermined Significance (MGUS), 38 patients with smoldering MM (SMM), and 79 patients with active MM, including either newly diagnosed or relapsed-refractory patients. Then, data were correlated with the main immunological and clinical features of the patients.ResultsFirst, we did not find any significant difference between MM and SMM patients in terms of PD-L1/PD-1 expression, on both BM myeloid (CD14+) and lymphoid subsets. On the other hand, PD-L1 expression by CD138+ MM cells was higher in both SMM and MM as compared to MGUS patients. Second, the analysis on the total cohort of MM and SMM patients revealed that PD-L1 is expressed at higher level in CD14+CD16+ non-classical monocytes compared with classical CD14+CD16− cells, independently from the stage of disease. Moreover, PD-L1 expression on CD14+ cells was inversely correlated with BM serum levels of the anti-tumoral cytokine, IL-27. Interestingly, relapsed MM patients showed an inverted CD4+/CD8+ ratio along with high levels of pro-tumoral IL-6 and a positive correlation between %CD14+PD-L1+ and %CD8+PD-1+ cells as compared to both SMM and newly diagnosed MM patients suggesting a highly compromised immune-compartment with low amount of CD4+ effector cells.ConclusionsOur data indicate that SMM and active MM patients share a similar PD-L1/PD-1 BM immune profile, suggesting that SMM patients could be an interesting target for PD-L1/PD-1 inhibition therapy, in light of their less compromised and more responsive immune-compartment.

Blood ◽  
2009 ◽  
Vol 114 (22) ◽  
pp. 4866-4866
Author(s):  
Luciana Correa Oliveira de Oliveira ◽  
Juliana Alves Uzuelli ◽  
Ana Paula Alencar de Lima Lange ◽  
Barbara Amelia Aparecida Santana-Lemos ◽  
Marcia Sueli Baggio ◽  
...  

Abstract Abstract 4866 Background Multiple myeloma (MM) is an incurable malignant disease, characterized by increased angiogenesis in the bone marrow (BM) microenvironment and aberrant BM metabolism. Matrix metalloproteinases (MMP) are a family of zinc-dependent endopeptidases implicated in tumour progression, invasion, metastasis and angiogenesis, via proteolytic degradation of extracellular matrix. MMPs are inhibited by tissue inhibitors of metalloproteinase (TIMP). Although recent studies have implicated MMP 9 in MM bone disease, little is known about the role of the TIMPs. Objectives a) to compare levels of sRANKL, OPG, MMP-2, MMP-9, TIMP-1, TIMP-2, VEGF, bFGF, microvessel density (MVD) between newly diagnosed MM patients and healthy controls; b) to determine the association of these molecules with disease progression, bone disease and neoangiogenesis and c) to evaluate the impact of these variables on survival. Patients and Methods As of July 2009 38 newly diagnosed and untreated multiple myeloma patients were enrolled in the study. The median age was 61years-old (range 39-91) with 24 (63%) males. Patients were diagnosed and categorized according The International Myeloma Working Group criteria and ISS, respectively. Bone involvement was graded according to standard X-ray: patients with no lesions, or with one/ two bones involved or diffuse osteoporosis were classified as low score, whereas patients with lesions in more than two bones or presence of bone fracture were classified as high score. MMP-2 and MMP-9 were determined by PAGE gelatin zymography from plasma as previously described. MMP-9, TIMP-1 and TIMP-2, OPG and sRANKL concentrations were measured by ELISA. The levels of VEGF, bFGF were obtained using cytometric bead array. Ten healthy volunteers were used as controls. Bone marrow MVD measured in hotspots was evaluated in 26 out of 38 patients at diagnosis and 15 patients with Hodgkin Lymphoma stage IA and IIA (used as controls) by staining immunohistochemically for CD34. Comparisons among groups were analyzed by ANOVA and the correlation by the Spearman's correlation coefficient. Cox regression were performed for overall survival (OS) analysis. Results Patients with MM had elevated TIMP-1, TIMP-2 and OPG values compared with controls. No significant difference was found between plasma sRANKL, pro-MMP2, pro-MMP9 and MMP-9 levels. We found that plasma TIMP-1 levels correlated positively with bFGF, VEGF, MVD, beta-2 microglobulin (B2M) and OPG (r: 0.514, p=0,001, r: 0.350, p=0,031; r: 0.610, p<0.0001; r: 0.760, p<0.0001 and r: 0.701, p<0.0001, respectively) and TIMP-2 levels with bFGF, DMV, B2M and OPG (r: 0.512, p=0.002; r: 0.595, p<0.0001; r: 0.587, p<0.0001 and r: 0.552, p<0.0001, respectively). TIMP-1 and TIMP-2 levels correlated with the ISS stage (p<0.0001, p=0.006, respectively). The only variables that correlated with clinical bone disease staging were hemoglobin, B2M and albumin levels, whereas TIMP-1, TIMP-2, bFGF, VEGF and OPG correlated with DMV. On the univariate analyses, age, gender, proMMP2, TIMP-1, TIMP-2, creatinine, B2M and MVD were significantly associated with overall survival. In Cox regression model, TIMP-1, TIMP-2 and B2M levels remained to be significantly associated with OS. In conclusion, our results suggest that TIMP-1 and TIMP-2 levels are strongly associated with neoangiogenesis and are independent prognostic factors in MM. Disclosures No relevant conflicts of interest to declare.


2017 ◽  
Vol 4 (S) ◽  
pp. 159
Author(s):  
Hoang Cong Phan ◽  
Thang Thanh Phan ◽  
Toan Trong Ho ◽  
Thu Bich Tran ◽  
Thanh Thanh MCB ◽  
...  

Introduction: multiple myeloma (MM) is a B cell malignancy which characterized by accumulation of plasmocyte in bone marrow, immunoglobulins and free light chain in serum (sFLC). According to IMMWG (International multiple myeloma working group), sFLC is a criterion in diagnosis of MM. In this study, we investigate the concentration and κ/λ ratio of sFLC in newly diagnosed MM patients at Cho Ray hospital. Methods: cross-sectional study. Serum samples of 36 newly diagnosed MM patients were analyzed by Binding Site Freelite method to measure the amount of κ and λ sFLC.   Results: the median age of 36 MM patients was 61 yrs (41 – 88 yrs), with the male/female ratio was 1.2/1. MM stage III, stage II and stage I accounting for 63.9% (23/36), 27.8% (10/36), and 8.3% (3/36), respectively. Clonal IgG, IgA and IgE MM accounting for 61.1% (22/36), 30.6% (11/36), and 8.3% (3/36), respectively. We reported the median of plasmocyte in 36 cases was 35.4% (95%CI: 27.6 – 43.3). The median of concentration of κ sFLC, λ sFLC, and involved/uninvolved sFLC ratio were 1601.8 mg/L (95%CI: 104.9 – 3098.7), 900.1 mg/L (95%CI: 10.7 – 1789.5), and 191.0 (95%CI: 87.6 – 294.4), respectively. The abnormally high in sFLC concentration was reported in 97.2% MM cases (35/36), in which 55.6% cases (20/36) had increased κ sFLC, 19.4% cases (7/36) had increased λ sFLC, and 22.2% cases (8/36) had increased both κ+λ sFLC concentration. Increased involved/uninvolved sFLC ratio was found in 94.4% MM cases (34/36), in which 36.1% cases (13/36) had sFLC ratio > 100, with all involved sFLC concentration > 100 mg/L. In 3 cases of MM with kidney failure, 2 cases had increased both κ+λ sFLC, 1 case had increased κ sFLC concentration; and all of 3 cases had involved sFLC level > 5300 mg/L with sFLC ratio > 100. No significant difference of sFLC concentration and sFLC ratio among gender, stage of disease, Ig clone, or plasmocyte percent in bone marrow of MM patients. Conclusions: due to the abnormally high of sFLC concentration and sFLC ratio in MM, it is necessary to monitor frequently these parameters during treatment to prevent the risk of kidney failure for patients.


Blood ◽  
2013 ◽  
Vol 122 (21) ◽  
pp. 4436-4436
Author(s):  
Sonali Panchabhai ◽  
Katalin Kelemen ◽  
Sinto Sebastian Chirackal ◽  
Rafael Fonseca

In multiple myeloma (MM) the interaction of plasma cells, bone marrow stromal cells and tumor associated macrophages (TAMs) plays a significant role in conferring resistance to therapy and in the maintenance of residual disease. Folate receptors (FR) are specifically expressed on metabolically active malignant cells and TAMs and their expression in normal tissues and resting macrophages is limited. FR mediates folate uptake by receptor-mediated endocytosis. This qualifies the receptor to be exploited for drug delivery of folate conjugated cancer therapeutics. Our primary goal in this study is to evaluate the expression of functional FR in MM cells and TAMs with a view to exploit this for folate conjugated targeted therapy for MM. First we evaluated the presence of TAMs in paraffin embedded bone marrow slides of newly diagnosed MM patients with CD68 (pan-Macrophage marker) and CD163 antibodies (specific marker of TAMs) and found extensive infiltration of macrophages in bone marrow from MM patients. Next to evaluate expression of FR in MM cells, we employed an FR antibody and evaluated MM cell lines with immunoblot, flow cytometry and confocal microscopy. In a panel of ten MM cell lines, we found that out of the three FR isoforms (α, β and γ), FR beta (FR-β) is expressed by all of them. Next to test whether this expressed receptor is indeed functional, we incubated the cells with folate deficient media, added different concentrations of EC17 (folate conjugated to FITC, Endocyte Inc.) to the medium and looked for the uptake by flow cytometry after washing off the drug at different time points (after 10, 20, 40 and 60 min).We observed that the uptake begins in 10 min and is saturated at 1 hour with 100nM Folate-FITC. With confocal imaging, Folate-FITC was found in the cytoplasm of MM cells suggesting internalization of Folate-FITC and localization in the cytoplasm. In addition to myeloma cell lines, we also confirmed the uptake of Folate-FITC in CD138+ plasma cells of a newly diagnosed myeloma patient by flow cytometry. This strongly suggests that MM cells express functional FR-β. To test the specificity of this FR mediated uptake, we pre-incubated cells with 0.1mM folic acid in medium for 30 min and then added EC17. This maneuver blocked the activity mediated by FR and no uptake was observed , which proves that the Folate-FITC is internalized only through the FR. To evaluate the expression of FR in-vivo samples, we stained paraffin embedded bone marrow slides of newly diagnosed MM patients with FR-β antibody and TAM specific markers. We observe that FR is expressed on both MM cells as well as TAMs. To assess the endurance of cytotoxic effect of folate conjugated chemotherapeutic agents, we treated MM cell lines with folate conjugated vinka alkaloids and compared them to unconjugated drug and found no significant difference in their action suggesting conjugation with folate does not alter its efficacy. To assess potential toxicity of folate conjugated therapeutics, we obtained CD34+ cells and looked for the uptake of Folate-FITC with flow cytometry. We found no uptake and this is in line with previous reports suggesting that CD34 positive cells express nonfunctional FR. So we propose that FR qualify as potential targets for cancer treatment. Folate targeted therapy using folate-conjugated drugs which can selectively act against both MM cells and supporting TAMs has the potential of specific anti-MM tumoricidal activity. This therapeutic approach would broaden the use of drugs that could be conjugated with folate for MM therapy. Additionally assessment of TAMs in bone marrow sections of MM patients would add another feature for grading, classifying and prognosticating MM. Disclosures: Fonseca: Cylene: Research Funding; AMGEN: Consultancy; Millennium: Consultancy; Binding Site: Consultancy; Onyx: Consultancy, Research Funding; Lilly: Consultancy; BMS: Consultancy; Genzyme: Consultancy; Celgene: Consultancy; Medtronic: Consultancy; Otsuka: Consultancy; Prognostication of MM based on genetic categorization of the disease: Prognostication of MM based on genetic categorization of the disease, Prognostication of MM based on genetic categorization of the disease Patents & Royalties.


Author(s):  
Michael G. Alexandrakis ◽  
Freda J. Passam ◽  
Emmanuel Ganotakis ◽  
Evgenios Dafnis ◽  
Constantina Dambaki ◽  
...  

AbstractThere is evidence that angiogenesis plays an important role in the progression of multiple myeloma (MM). Hepatocyte growth factor (HGF) and tumor necrosis factor-α (TNF-α) are cytokines that potently stimulate angiogenesis. We evaluated the microvascular density (MVD) of bone marrow biopsies (after immunostaining with anti-CD34 antibodies) and serum levels of HGF and TNF-α in 43 patients with newly diagnosed MM. Twenty-four of these patients reached a plateau phase after treatment and were reevaluated for MVD, HGF and TNF-α. MVD values and serum levels of HGF and TNF-α were elevated in newly diagnosed MM patients in comparison with healthy controls. Pre-treatment MVD, HGF and TNF-α increased with advancing stage of MM disease. In patients reaching the plateau phase, a significant reduction in MVD, HGF and TNF-α levels occurred. A positive correlation was noted between pre-treatment MVD and serum levels of TNF-α and lactic dehydrogenase but not with HGF. However, HGF strongly correlated with β


2021 ◽  
Vol 39 (15_suppl) ◽  
pp. 8010-8010
Author(s):  
Noemi Puig ◽  
Bruno Paiva ◽  
Teresa Contreras ◽  
M. Teresa Cedena ◽  
Laura Rosiñol ◽  
...  

8010 Background: Analysis of minimal residual disease (MRD) in the bone marrow (BM) of patients with multiple myeloma (MM) is accepted by the IMWG to evaluate treatment efficacy and is a well-established prognostic factor. However, there is an unmet need to explore the clinical value of MRD in peripheral blood (PB). Methods: Newly diagnosed MM patients enrolled in the GEM2012MENOS65 trial received six induction (Ind) cycles of bortezomib, lenalidomide, and dexamethasone (VRD) followed by autologous stem cell transplantation (ASCT) and 2 further cycles of consolidation (Cons) with VRD. MRD was analyzed in BM using Next Generation Flow (NGF) and in serum by Mass Spectrometry (MS) using IgG/A/M, κ, λ, free κ and free λ specific beads, both after Ind, at day 100 after ASCT, and after Cons. Sequential samples from the first 184 patients were analyzed. Results: Results of both methods were in agreement (NGF+/MS+ and NGF-/MS-) in 83% of cases post-Ind (152/184), 80% post-ASCT (139/174) and 76% post-Cons (128/169). Stratifying by the log range of MRD by NGF, discordances (NGF+/MS- and NGF-/MS+) seemed to increase at the lower MRD ranges, being 22%, 21% and 19% from ≥10−5 to <10−4 and 21%, 21%, 23% at ≥x10−6(post-Ind, ASCT and Cons, respectively). Analysis of discordances showed that they could be partly explained by the higher percentages of cases found to be positive by MS as compared by NGF at part of the time-points analyzed and at each log range of MRD. From ≥10−5 to <10−4, MRD was detected by NGF in 36%, 28%, 20% of cases post-Ind, ASCT and Cons, respectively vs MS in 37%, 29%, 21% of them; at ≥x10−6, NGF was positive in 11%, 14%, 19% of cases vs MS in 23%, 19% and 16% of them. Considering NGF as a reference, the negative predictive value (NPV) of MS per MRD range (≥10−5 to <10−4 and ≥x10−6, respectively) was: post-Ind: 83% (p<0,0001), 94% (p=0,034); post-ASCT 86% (p<0,0001), 90% (p=0,022); post-Cons 89% (p<0,0001), 85% (p=0,0469). Despite these discordances, the prognostic value of each technique in terms of undetectable MRD and progression-free survival (PFS) was consistent at all time-points (Table) and further, discordant cases (NGF+/MS- and NGF-/MS+) did not display a significantly different PFS as compared to NGF-/MS- cases. Conclusions: The results of MRD assessed by NGF in BM and by MS in PB show a significant concordance and are associated with a similar prognostic value analyzed in terms of PFS. Given its high NPV, MRD in peripheral blood by MS provides a gateway for BM aspiration/biopsy and MRD assessment by NGF.[Table: see text]


Blood ◽  
2019 ◽  
Vol 134 (Supplement_1) ◽  
pp. 3193-3193
Author(s):  
Toshiki Terao ◽  
Yoichi Machida ◽  
Takafumi Tsushima ◽  
Akihiro Kitadate ◽  
Daisuke Miura ◽  
...  

Introduction: Multiple myeloma (MM) is a heterogeneous malignant plasma cell (PC) disorder and the survival ranges from several months to > 10-years. Several risk stratification systems such as the Revised International Staging System (R-ISS) have been developed. PET/CT allows the direct assessment of metabolic tumor burden in various malignancies. Therefore, metabolic tumor volume (MTV) and total lesion glycolysis (TLG), which are volumetric parameters applicable to PET/CT, are emerging tools for MM prognostication. This study was aimed to determine the value of MTV and TLG using PET/CT in the prognostication and in combination with various hematologic parameters such as bone marrow PC (BMPC) percentages and circulating tumorous PCs (CPCs) to identify the patients with high-risk features. Methods: A total of 196 consecutive patients with newly diagnosed MM (NDMM) who underwent baseline whole-body PET/CT between January 2009 and June 2019 at Kameda Medical Center, Kamogawa-shi, Japan, were retrospectively analyzed. PET/CT was performed using dedicated PET/CT scanners (Discovery ST Elite Performance; GE Healthcare, Milwaukee, USA). The standard uptake value (SUV) was normalized according to the injected dose and lean body mass. The baseline SUVmax of all lesions was recorded, and the highest value was considered as the SUVmax of the patient. MTV was defined as the myeloma lesions volume visualized on PET/CT scans with SUV greater than or equal to the fixed absolute threshold of SUV = 2.5. TLG was calculated as the sum of the product of average SUV (SUVmean) and MTV of all lesions. Computer‐aided analysis of PET-CT images for MTV and TLG calculations was performed using an open-source software application of Metavol (Hokkaido University, Sapporo, Japan). The CPCs were measured using an 8-color flowcytometry and reported as the percentage per total mononuclear cells using the monoclonal antibodies of CD19, 38, 45, 56, 117, 200, κ, λ, and CD138. The BMPC was calculated by counting the percentages of CD138-stained PCs among the all nucleated cells on bone marrow biopsy samples. Eleven patients (13.8%) were excluded because the MTV data could not be retrieved. Ultimately, 185 patients were included in our analysis. Written informed consent was obtained from all patients. Results: Among the 185 patients, 28 patients (15.1%) were negative for avid lesion on PET/CT. Whole-body MTV and TLG ranged from 0 to 2440.7 mL, with a median of 34.2 mL and from 0 to 12582.4 g, with a median of 97.0 g, respectively. The best cut-off values of MTV and TLG that discriminate the survival using a receiver-operating-characteristic curve analysis were 56.4 mL and 166.4 g, respectively. The overall survival (OS) and progression-free survival (PFS) of patients with a lower cut-off value of MTV (≤56.4 mL) had better survival with not reached (NR) and 37.3 months as compared to those with a higher cut-off value (>56.4 mL) that reached 52.9 and 23.8 months, respectively (p=0.003 and 0.019). Similarly, the OS and PFS of patients with a lower cut-off value of TLG (≤166.4 g) showed better survivals with NR and 37.3 months as compared to those with a higher cut-off value (>166.4 g) that reached 54.3 and 28.8 months, respectively (p=0.0047 and 0.012). Next, we explored the prognostic impact of the clinical variables including MTV or TLG, CPCs, and BMPC. High levels of CPCs and BMPCs levels were defined as ≥0.018% of the total mononuclear cells and BMPCs of ≥57%, respectively. Univariate analysis showed that age≥70, serum creatinine≥2.0 mg/dL, R-ISS stage 3, higher cut-off value of MTV, and higher cut-off value of TLG were the associated with shorter OS. To measure the tumor volume with accuracy, we combined BMPC or CPCs and MTV or TLG. On multivariate analysis, age≥70 and the combination of higher cut-off value of MTV or TLG and high level of BMPC percentage were significantly associated with shorter OS [Hazard Ratio (HR) 2.12, p=0.038, HR 2.66, p=0.027 and HR 2.57, p=0.029, respectively] and PFS (Not assessed, HR 2.52, p=0.018 and HR 2.7, p= 0.011, respectively) (Figure 1). Conclusion: Our findings demonstrated that MTV and TLG calculated from pretreatment PET/CT were useful for risk stratification in patients with NDMM when combined with BMPC. The prognostic performance of the combined high-burden of TLG or MTV and high levels of BMPC were independent of the established risk factors. Disclosures Matsue: Novartis Pharma K.K: Honoraria; Janssen Pharmaceutical K.K.: Honoraria; Celgene: Honoraria; Takeda Pharmaceutical Company Limited: Honoraria; Ono Pharmaceutical: Honoraria.


2019 ◽  
Vol 19 (10) ◽  
pp. e86
Author(s):  
Shebli Atrash ◽  
Michael Davis ◽  
Myra Robinson ◽  
Daniel Slaughter ◽  
Peter Voorhees ◽  
...  

1999 ◽  
Vol 33 (5-6) ◽  
pp. 511-519 ◽  
Author(s):  
Robert Peter Gale ◽  
Rolla Edward Park ◽  
Robert W. Dubois ◽  
Kenneth C. Anderson ◽  
William M. Audeh ◽  
...  

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