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Query: UNIPROT:Q06643 (non-Hodgkin's lymphoma)
 11,307 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The role of interleukin 2 (IL-2) for growth and differentiation of normal and malignant B cells still remains controversial. We assessed normal peripheral blood B cells and cell lines derived from patients with B non-Hodgkin's lymphomas (NHLs) with respect to their responsiveness to recombinant human IL-2 (rIL-2). The NHL cell lines used in our experiments expressed the Tac antigen (CD25)--a compound of the IL-2 receptor (IL-2R)--in a percentage ranging from 28 to 57%. As measured in a [3H]thymidine uptake assay, the normal peripheral blood B cells demonstrated a dose-dependent proliferative response to rIL-2, whereas the NHL cells did not show any responsiveness to rIL-2. In a clonogenic culture assay we evaluated the colony formation of the NHL cells and found a decrease of 28 to 41% on average in the presence of rIL-2 (10-50 U/ml). This moderate inhibitory effect on the clonal growth of the NHL cells was not due to a differentiation inducing effect of rIL-2, as studied by measuring the Ig production under increasing doses of rIL-2 (1 to 100 U/ml). Thus, malignant NHL B cells may express the CD25 compound of the IL-2 receptor on their surface, demonstrating a different functional responsiveness to rIL-2 compared to normal peripheral blood B cells.
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PMID:Effect of recombinant human interleukin 2 (rIL-2) on normal peripheral blood B cells and B lymphoblastoid cell lines. 268 Sep 16

Tumor cells from 5 human B cell non-Hodgkin's lymphoma (B-NHL) patients were investigated for proliferative activity and idiotypic (Id+) immunoglobulin (Ig) secretion in serum-free medium without deliberate addition of B cell growth or differentiation factors (BCDF). These data were compared with cell surface marker expression, notably of activation antigens such as 4F2 and interleukin-2 (IL-2) receptor. Cells from all patients became 4F2 positive at the end of the 6-day culture period. Freshly drawn cells from 3 out of 5 patients expressed the IL-2 receptor (CD25; Tac antigen) or acquired this marker during culture in vitro and secreted relatively high levels of Id+ Ig in vitro. This correlated with elevated serum Id levels (greater than or equal to 0.5 micrograms/ml in vitro versus greater than or equal to 20 micrograms/ml in vivo). In the 2 CD25 (Tac)- B-NHL patients serum Id levels were below the detection limit and the amount of Id+ Ig secreted in vitro did not surpass 50 ng/ml. Only the B-NHL cells from a single patient were initially CD25 (Tac) positive and only these cells proliferated in serum-free culture. To test whether IL-2 receptor expression in the 3 CD25 (Tac)+ patients was functional, recombinant IL-2 (rIL-2) either alone or in conjunction with BCDF and recombinant IL-4 (rIL-4) was added to the cultures. In 2 out of 3 CD25 (Tac)+ patients rIL-2 was capable of enhancing proliferation or Ig secretion. In addition rIL-2 was found to enhance BCDF-mediated but not rIL-4 mediated responses. The third CD25 (Tac)+ B-NHL population was resistant to any of these lymphokines. Thus, this serum-free culture system may accurately reflect patient serum Id levels. IL-2 appears to regulate not only the in vitro but also the in vivo Ig secretion by neoplastic B cells.
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PMID:Idiotypic immunoglobulin secretion by human B cell non-Hodgkin's lymphomas is related to the expression of the interleukin-2 receptor. 312 22

Proliferation and differentiation of B cells can be promoted by a number of inducing factors, including interleukin-2 (IL-2). In vitro-stimulated normal B cells usually express IL-2 receptors (TAC). Furthermore, it has been reported that some minor sub-populations of B cells in normal lymphoid tissue also express TAC antigen, as do some leukemic B cells. In the present study, the reactivity of 20 specimens of non-Hodgkin's lymphoma or B-cell origin was examined for a wide panel of monoclonal antibodies (MAb), including an anti-TAC MAb. The ability of the isolated and purified B cells to proliferate in the presence of B-cell mitogens and culture supernatants (containing various growth factors, including IL-2) was also investigated. These experiments provided some evidence that the TAC-negative cells remained unreactive, whereas the TAC-positive cells entered the cell cycle and proliferated. IL-2 responsiveness of neoplastic B cells is therefore discussed.
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PMID:Interleukin-2 receptor is functionally linked with in vitro activation of B cells isolated from non-Hodgkin's lymphomas. 326 63

We examined nine cases of adult non-T lymphoid leukemia to investigate the cell surface inducibility of interleukin 2 receptor alpha chain (IL-2R alpha) and beta chain (IL-2R beta) after in vitro culture with and without recombinant human interleukin-1 beta (rhIL-1 beta). Induction of IL-2R alpha was observed in four of six cases with precursor B-cell acute lymphoblastic leukemia (pre-B ALL) and in all of three cases with B-cell mature lymphoid neoplasm (two chronic lymphocytic leukemia and one leukemic phase of non-Hodgkin's lymphoma). All of the IL-2R alpha-inducible cases could express this spontaneously even without rhIL-1 beta, while IL-2R beta did not appear on leukemic cells from any of the cases tested. IL-2R alpha-inducible pre-B ALL cases displayed stem cell antigen CD34 and induced myeloid-associated antigen CD13 simultaneously. These results suggest that IL-2R alpha but not IL-2R beta is easily inducible in certain cases of mature B-cell lymphoid neoplasm and pre-B ALL with immature characteristics.
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PMID:Induction of cell surface interleukin 2 receptor alpha chain expression on non-T lymphoid leukemia cells. 752 79

We report here a case of acute polymyositis associated with a Ki-1 non-Hodgkin's lymphoma (NHL). This anaplastic large cell malignant lymphoma was a primary T-cell NHL lymphoma of the bone marrow. The malignant cells expressed the CD30 (Ki-1), CD3, and CD4 antigens, the beta chain of the interleukin 2 receptor (CD25), and the betaF1 antigen (alpha/beta T-cell receptor). Chemotherapy and high dose methylprednisolone pulse therapy were initiated. However, no clinical improvement was noticed, because the patient rapidly died of an acute respiratory distress syndrome. To our best knowledge, this represents the first case of Ki-1 lymphoma associated with Polymyositis.
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PMID:Polymyositis associated with Ki-1 lymphoma. 777 58

The serum levels of soluble interleukin 2 receptor (SIL-2R) and tumor necrosis factor (TNF) were assessed in 69 children from 6 months to 14 years old who suffered from acute lymphoblastic leukemia (39), Hodgkin's disease (15), non-Hodgkin's lymphoma (15) and in 54 normal age-matched controls prior to any therapy and at remission. Both SIL-2R and TNF levels were significantly higher at diagnosis compared with normal controls (P < 0.001), but decreased significantly at remission. The SIL-2R and TNF levels were significantly higher in an advanced stage of lymphoma than in an early stage. In the patients with acute lymphoblastic leukemia (ALL) and lymphoma, higher levels of SIL-2R (> 1030 units/ml) and TNF (> 30 pg/ml) were associated with a poorer treatment outcome (P < 0.01). Our findings indicate that elevated TNF serum secretion together with SIL-2R are useful markers in childhood ALL and lymphoma and can be used to assess both disease activity and prognosis in this group of malignancies.
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PMID:Serum levels of tumor necrosis factor and soluble interleukin 2 receptor as markers of disease activity and prognosis in childhood leukemia and lymphoma. 849 93

We describe a patient presenting with systemic lupus erythematosus (SLE) and concomitant low-grade (Ig) non-Hodgkin's lymphoma of the B cell type (B-NHL). Although the association of autoimmune disorder and lymphoma is well conceived, there is only scarce information available as to the simultaneous occurrence of both disease conditions in one patient. As in this patient diagnosis of Ig B-NHL was also based on the detection of a monoclonal population of CD5+ B lymphocytes, and given that the polyclonal expansion of CD5+ B cells has been previously reported in rheumatoid arthritis (RA), Sjogren's syndrome (SS) and single cases of SLE, the observations we made in this patient led us to discuss the role of the CD5+ population in the development of rheumatic disorders and concomitant lymphoid malignancy. Moreover, since impaired production rates of interleukin 3 (IL-3) and interleukin 4 (IL-4) have been associated with an abnormal expansion of CD5, lymphoma cells and seeing that soluble interleukin 2 receptor (sIL-2R) serum levels were found to be positively correlated with disease activity both in SLE and Ig B-NHL, these parameters were investigated and related to the patient's disease state throughout the entire clinical observation period.
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PMID:Concomitant manifestation of systemic lupus erythematosus and low-grade non-Hodgkin's lymphoma. 926 88

We monitored the effectiveness of lymphoma therapy by measuring the serum levels of soluble CD44std (sCD44std) and soluble CD44v6 (sCD44v6). Furthermore, we measured the level of soluble interleukin 2 receptor (sIL-2R). A total of 24 patients with non-Hodgkin's lymphoma were enrolled. sCD44std, sCD44v6, and sIL-2R on serum were measured using ELISA system. In all patients, only the sIL-2R level decreased significantly following therapy. However, an analysis of CR and PR showed that the degree of decrease in the sCD44std level was significantly greater than that in the sIL-2R level. Furthermore, among the CS IV cases, only the CD44std level decreased significantly after therapy. These findings suggest that the level of serum sCD44std reflects clinical pathology more closely than the level of serum sIL-2R in CS IV patients and those who respond well to therapy. Moreover, when T-cell and B-cell lymphomas were analyzed separately, the levels of sCD44std and sIL-2R decreased significantly after therapy in patients with B-cell lymphomas, and the degree of decrease in the sCD44std level was very significant with a p-value of 0.0003. This suggests that when sCD44std is used as an index of treatment, it more closely reflects the treatment of B-cell lymphomas. Level of serum sCD44std should prove to be a useful marker for assessing the effectiveness of lymphoma therapy.
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PMID:Clinical significance of serum CD44 measurement in malignant lymphoma. 1140 23

A 29-year-old man developed diffuse large B-cell lymphoma in a subpectoral pacemaker pocket that 6 years previously had been created in the chest for a titanium-covered pulse generator. The patient had an 8-cm-diameter dark red tumor with necrotic tissue on a keloidal surgical scar in the left side of the chest. Left axillary lymphadenopathy also was present. Laboratory studies showed an increased level of soluble interleukin 2 receptor and a normal level of lactose dehydrogenase. A biopsy specimen showed a diffuse large B-cell phenotype and monoclonal immunoglobulin H gene rearrangement. A gallium scintigraphy study showed abnormal accumulation in the left chest and left axilla. On the basis of these findings, we diagnosed diffuse large B-cell lymphoma, stage II. The patient received THP-COP chemotherapy (pirarubicin, cyclophosphamide, vincristine, and prednisolone) and radiotherapy, achieved complete remission, and was free of disease for 16 months after treatment. This case suggests that there was a relationship between the development of non-Hodgkin's lymphoma and the presence of chronic inflammation in the pulse generator pocket.
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PMID:Non-Hodgkin's lymphoma developing in a pacemaker pocket. 1277 29