Science topic
Lymphoma - Science topic
A general term for various neoplastic diseases of the lymphoid tissue.
Questions related to Lymphoma
Hey all
I wish to know if I can get MM.1S cell line. (MM.1S is a B lymphoblast cell that was isolated from the peripheral blood of a Black, 42-year-old, female patient with immunoglobulin A lambda myeloma. This cell line was deposited by S. Rosen.)
This particular cell line is not available in NCCS repository.
Thank you in advance
I'm studying the drug combination strategies for R/R NK/T cell lymphoma. We can obtain clinical biopsy samples for drug combinations testing in vitro to evaluate the combination effect on primary lymphoma cell killing. However, we cannot find a method to isolate and culture primary NK/T lymphoma cells. Could you provide some help and suggestions? Thanks very much.
Like many people, we're looking for an alternative to Matrigel for flank tumor models. We typically used the high concentration matrigel solution 50-100uL mixed 1:1 to a cellular solution. We're working with lymphomas in either NSG or Bl6 mice. Thanks!
I wanted to perform RNA extraction of U937 cells (Human Myeloid Lymphoma) by TRIZOL method, after adding TRIZOL to the sample I had kept it for incubation at room temp. and since I was not able to Extract RNA immediately I thought that I will keep it at -80C however I forgot to keep the samples at -80 before leaving. I wanted to know If I should proceed with RNA extraction as It will 2 days that the sample will be in trizol and after which I can process it.
Thank you.
How to compare diagnostic efficacy of two methods (MRI and CT) using ROC-curve analysis? Is it possible to construct ROC-curves and compare AUC using SPSS or MedCalc? This task is different from finding optimal threshold for quantitative parameter which is easy to perform.
Example: I want to compare diagnostic efficacy of MRI-DWI and CT for differentiation of normal and involved lymph nodes in lymphoma. 2666 lymph node groups are available for analysis.
MRI-DWI: TP 920, FP 3, TN 1710, FN 33.
CT: TP 851, FP 3, TN 1710, FN 102.
I want to compare WNT activity status in a few lymphoma cell lines and I'm wondering if I can use B-catenin levels (via western blot or FACS) to do it?
I know that the right way to go Is to do TOP Flash assay, however transfection of lymphoma cell lines is nightmarish and requires a lot of optimization. I'm also not sure if expression of AXIN2 will fit here.
If a drug that's known to inhibit STAT3 and cause mitochondrial uncoupling results in cytotoxicity that is unique to SU-DHL-1 cell line but not in other cancer cells, what may be the reason for this?
I performed a molecular docking analysis of my designed structure towards anaplastic lymphoma kinase. Results showed all structures have a high binding affinity to anaplastic lymphoma kinase compared to crizotinib. Then, the structures were synthesized and confirmed using NMR, mass spec, and IR. However, the synthesized compounds have low inhibition in the A549 cell line.
If a particular compound is able to induce STAT3 degradation in SU-DHL-1(lymphoma) and K562(lymphoblast) cell lines but not in KG-1(bone-marrow) cell line, what may be the cause of it?
How is STAT3 regularly degraded (not inhibited- the band almost completely disappears along with p-STAT3 band)?
I'm assuming if the drug acts on an upstream target of STAT3 I would still see a band for STAT3 that was already existing in the cells prior to adding the test agent.
Any insights or comments would be helpful.
I would like to know if it is possible to use less cells or volume or plates.
We have recently seen a case of large diffuse B-cell lymphoma of probable folicular origin (CD10+ partial expressión) with a well defined CD103 expression by B-cells. The references in the literature are scanty and unclear.
Hello,
I am looking for a T-cell like cell line (like Jurkat) that expresses xCT (system xc-, SLC7A11). Could anybody please recommend any cell lines (+refs if possible) that I could use?
Kinds regards
Has anyone found any information and studies on Angioedema Splenic Marginal Zone Lymphoma. This is a rare lymphoma that I have been researching but I have very little information
Kindly provide any standard protocol or description
Hi all, this is my first-time culturing lymphoma cell line.
I obtained a frozen vial of EL4 (in the background of B6 mice) lymphoma cell line, and I am the only one culturing this line in the lab.
I checked on ATCC that it should be a suspension cell line, but I noticed that over half of the cells have become adherent on the next day, is it normal?
I need to perform antioxidant testings on Histocyctic lymphoma cells, any suggestons of another cell line, if it doesn't become available?
Hello,
I recently started culturing a suspension cell line (L-428, Hogdekin lymphoma). I thawed a cryo-vial of the cell line, added pre-warmed RMPI + 10%FCS + Pen/Strep, centrifuged at 800 g, removed the media and added fresh, pre-warmed one and finally seeded them at 0.5 x 10^6/ml in 6-well tissue culture plates. During the first days they seemed quite ok, on day 3 they appeared as clumps (see picture L-428_Day3) and on day 4 I exchanged media. Since Day 7 they look more or less the same: not really smooth, but somehow eneven with a high "granularity" (see picture L-428_Day15). We changed the media to RPMI + 20% FCS + PenStrep hoping that this might do the trick and make them divide, but nothing changed. So the cell count doesn´t change. Acc. to trypanblue staining half of the cells are dead, the other half vital. Mycoplasma test (PCR) is negativ.
Has anybody run into similar troubles? Or does the picture gives anyone a clue what we might have done wrong? I would appreciate every suggestion!!
Regards,
Agnes
Definition and Background of Helicobacter Pylori Infections
Helicobacter pylori (H. pylori) bacterium is involved in many diseases other than peptic ulcer disease, such as coronary artery inflammation, gastroesophageal reflux disease, skin disease, iron deficiency anemia, rheumatologic issues and lymphoid tissue lymphomas associated with mucosa. It has also been reported that there is a strong association between gastric adenocarcinoma and lymphoma and H. pylori bacterium.
Hello,
I'm interested in taking two lymphoma cells lines and generating thymidine kinase (tk-) versions of them for the purposes of hybridoma generation. Does anyone have any experience with this?
Thank you.
Brian
What is the criteria to define a lymphoma CD20 positive? What is the cut off of expression?
On the basis of lymphomas in visceral organs in both the diseases.
Hi,
Here is my question :
I'll have to do confocal microscopy on suspension cells (lymphomas), to see internalization of a membrane receptor.
I have to immobilize them before (I think I will use a poly-lysine attachment protocol, anyone as a good protocol ? )
If they stay alive, I will try to do fluorescent live-cell imaging to see the internalization.
But if they die, I will fix my cells. And I would like to fix them at different defined times after immunostaining to see the internalization.
Anyone has an idea to process ?
Thanks a lot !
Hi,
I have generated some lymphoma cell lines and have been able to transduce them to high levels (>60%) using lentivirus expressing GFP.
I have tried titrating these cells with a vector that expresses gRNAs for a future CRISPR screen (the cells don't express CAS9 yet). I am transducing by spinnoculation and treating with puromycin at 1ug/ml (which I have titrated against the cells). When I perform the titration, I get a nice curve. My problem is that by comparing the numbers that I get from my no virus control or even cells that have been transduced but not undergone selection it would appear that I am only able to transduce ~10% of my cells (even though I know from GFP-expression that I can get much higher).
Is it possible that the puromycin treatment is causing the cells to stop proliferating for a short time (ie one or two days)? Or can anyone suggest another reason for this?
Many thanks
Nick
We have an HIV patient with multipl ring enhancement cranial lesions and toxoplasma serology is positive. There is no response to toxoplasma treatment after 2 months, but px does not accept biopsy. How long should we go on to the treatment? (Diffusion MR does not suggest lymphoma.) Are there any trial or case-series?
hi , i'm about to try my first PDX experiments with NSG mouse strain in few weeks and i wonder there is any preference of age or sex of NSG mouse for PDX . i heard that , for breast cancer , it would be good to use female NSG mouse of 6 weeks. however , in my case , i'm dealing with lymphoma case so i think that it would be little bit different from that .
it's pretty hard to find some reference about those things so it would be very appreciated if i could get some answers about it.
Has anyone experience in the effects of chemotherapy in non malignant splenomegaly. We have a patient with lymphoma and a non inflitrating spleen, which go on and off with chemotherapy. My doubt is if the spleen can be transiently reduced with chemo
I have a patient whith PMLBCL, who progressed under DA-EPOCH-Rx6 and R-ESHAPx2 and developed CNS sec. lymphoma. Can HD Mtx HD Ara-Cx4+WBRT do anything or is it a old story for this type of lymphoma if it is resistant nothing will help. We have a plan to do auto-SCT if she responds well to H-CVAD, but is there any chance for cure? Do anyone suggest some other approach?
Three questions:
- Would it help to linearize the plasmid before transfecting the suspension cells using Lipofectamine 2000 or 3000?
- Does it make a difference if the DNA is added in TE buffer or H2O (to OptiMEM)?
- Could I also use RNA for Lipofectamine transfection using the exact same protocol?
Looking to efficiently and stably transfect our EBV+ B lymphoma cell lines with firefly luciferase for consistent gene expression while maintaining cell viability.
Similar to BJAB (human) or A20 (balb/c) but a C57Bl/6 one
Excuse me,
Since I have no previous experience about this kind of experiments, I would be grateful if
Anyone can recommend me something to read about culturing lymphoma cells "from human patient samples" ?
also if there are some existing protocols, this would be so helpful.
Best,
Eslam
Sarcoid, lymphoma, metastasis, TB and???
B cell line with cell-surface IgG expression to use as positive controls for FACS staining
I have recently met with a Holistic Therapist who has noted the development in upper body cancers and himself developed Non-Hodgkin's Disease Lymphoma in the mouth and neck when people have Root Canal work done at their dentist. Is there any research papers on this topic?
Dear all
I want to induce lymphoma in nude mice as an animal model.Can any one guide me before inoculation of related cell lines into nude mice which contamination biological agent such as bacteria,viruses or etc must be test for evaluating the quality of cell lines?
Also which agents must be test in nude mice before inoculation?
Thank you
I specifically am looking to immortalize primary lymphoma cells and need a good immortalization vector. ABM has an entire immortalizing kit with an hTERT vector but I was hoping to hear some other people's review of it before investing in it.
What are the most novel innovative treatments or novel targeted therapies in RR DLBCL (clinical trials, immuno-oncology, rituximab, stem cell transplantation, precision medicin, omics)? The best review I have found so far is attached below.
Hey,
I'm analyzing the role of a signal adaptor protein found within lymphocytes, with a more general look at it's expression in various Acute Leukemias and Lymphomas.
Does anyone have/know of a decent protocol for analyzing leukemia within the blood?
Thanks!
Can extra intestinal MALT lymphoma be associated be neuromyelitis optica ?
I wonder whether anybody has been able to detect exosomes from an MHC knockout/knockdown lymphoma cells(or any kind of immune cell line) or not?
I need electroporated A20 lymphoma B-cells. I had used different terms, changing the voltage (260, 300 or 400V) and other parameters were constant.
Gene Pulser Xcell Electroporation System
Pre-pulse incubation: 10 min
Electroporation temperature: ice
Electroporation buffer: Gen Pulser electroporation buffer BIO-RAD
Terms:
Exponential Decay
Voltage: 260, 300 or 400V
DNA: 30 ug/ mL (10 kb)
Capacitance: 950 uF
Resistencia: infinitive
Cuvette gap: 0.4 cm
Thank you very much.
Carla
Some papers say CVID patients tolerate chemo well enough, while others say that's not the case and they prefer rituximab as first-line treatment. Is this maybe a trend?
I am looking for human leukemia or lymphoma cell line which is stably transfected with a fluorophore. If some one has it, please contact me.
Thanks,
Rikin Shah, MD.
I am working on optimizing Gene selection in microarray data for Cancer Classification. I am going to use SVM in (libsvm) as wrapper approach to evaluate Gene subsets using 10 K fold cross validation.
Microarray data consider as huge dimensional data ( i.e Lymphoma data set consists 4026 Genes 'features' and 62 instances and 3 class labels).
Does libsvm support multiclass classification, As in my work, Lymphoma & MLL has 3 classes?
What is the appropriate svm type and kernal type and parameters for the chosen kernal (c,gamma, etc...) in LIBSVM multi class classification like microarray data?
I want to perform a time point analysis of expression of cytokines and signaling proteins in Jurkat T cells treated with a compound X. The confusion is whether these cells, being lymphomas have the characteristic of constitutive expression of inflammatory factors and thus will impact the interpretations of my results. Please let me know fellow researchers.
Hello,
I am planning and experiment to try one drug in lymphoma cell lines and immunoblot for protein X. I will be adding the drugs and incubate for 15 hours and blot the next day. I am confused with whether to carry out the experiment in a T25 flask or 6 well plate. Both cases i need help in deciding the seeding density. Since I am lysing the cells the next day. So what should be the cell seeding density in both cases, optimum confluency, how much RIPA lysis buffer to use, is sonication necessary, etc. I have 2 million cells in 5 mls. I did a cell viability assay before in 96 well plate with 400,000 cells/ml. I plated the same day, added the drugs and after 48hrs, alamar blue and cell viability.
Thanks Much for your suggestions.
Do someone have informations / references about Myelodysplastic-like morphologic changes in trephine bone marrow biopsy, NOT due to chemotherapy or viral diseases, but associated to lymphomas or non hematologic diseases like autoimmune or chronic inflammatory processes. A PubMed search did not give useful results.
Thanks a lot for any help. Philippe
I am working on T and B-lymphoma, and B16F1 melanoma cell lines. I would like to know if 2 uL is enough for 500 mL RPMI/DMEM +10% FCS+ 5.5mL antibiotic media culture system. Is it sufficient to control the oxidation pool ?
Regards
Bikash
We are working ALK+ ALCL. We want to separate the lymphoma T-cells from the normal T-cell population in a blood sample. One option is CD30 whose expression is high in case of lymphoma T-cells but we need something more specific which is completely absent (or atleast negligible) from one of the cells.
Already used RNU43 and U6.
I have been exposing B lymphoma cells to pharmaceuticals at different concentrations for a toxicological analysis. I used a couple of assays to get an overall picture of potential effects that the pharmaceuticals could cause. My results are however (at least to what I understand) a bit contradictory.
At 66 h of exposure I see a 50% inhibition of proliferation in one of my assays (assessment of proliferation via radiolabeled 3H-thymidine). In this assay the cells are stimulated with the mitogen LPS.
At 24 h of exposure following a wash and further 72 h of incubation in clean medium I see a stimulation of cells from the G0/G1 phase of the cell cycle into the S phase (cell cycle assay with PI only; percentage of cells in G0/G1 decreased significantly whereas the percentage of cells in the S phase increased). Of course, having only one stain does unfortunately not give me much information on the kinetics of the cell cycle, so this argument is unfortunately a bit limited.
Viability and apoptosis are unaffected.
Of course exposure times are not identical in the two different assays and the mitogen LPS is probably also a factor influencing differences...
Most papers I found were talking about arrest of certain phases of the cell cycle. I could not find any that were observing this kind of stimulation (if it is one). I just wonder if there is something that I'm missing that makes my observations easier to explain in the subsequent publication. :)
I would appreciate your insight!
Thank you!
I hope you can provide me with some insight. :)
I exposed a B lymphoma cell line with LPS in vitro for some toxicity tests. And today I was just wondering how long the effect of a mitogen would last if it were no longer present in the medium and if I just kept on passaging the cells.
In the body, lymphocytes get stimulated and proliferate. Most chapters or articles I read are focusing on the activation of the cells and the mounting of the adaptive immune response. But what happens after the pathogen is dealt with? Are the cells self-regulating to stop the proliferation or are other parts of the immune system taking care of that!
Thanks in advance!
I'm planning to perform a WB for Notch1 and 2 proteins, I know Molt4/IG and Jurkat cell line are positive for Notch1 but there is no info about Notch2 in the literature. Anyway, we don't have any of these cell lines in our lab and I need a positive control for Notch2 in WB.
However, we have plenty of B-cell lymphoma cell lines. Does anyone know a B-cell line positive for Notch2 protein?
Many thanks.
Hello everybody,
I am trying to find a stable B-lymphoma cell line tagged with GFP. Can anyone please help me? It seems there is no cell line like this and people insert GFP by themselves. But the problem is, eventually GFP will be expressed less right? I would really appreciate any advice here.
Thanks a lot and have a good day.
Olga
Rituximab is a monoclonal antibody which targets the CD20 marker. It is usually used in chemotherapy regimens against cells that express CD20, in this case B cells (as in the case of malignant non-Hodgkin's B cell lymphoma). It is also used in the treatment of certain diseases, but also in some clinical trials (as in the case of type 1 diabetes). Of course, the infusion of Rituximab (anti-CD20) would affect all CD20+ cells. My question: Does Rituximab have an effect on normal circulating lymphocytes?
I would like to know the pathological significance of enhanced expression of cyclin D1 in hairy cell leukemia (HCL) cells, but not expressed in HCL-like leukemias/lymphomas (HCL-variant and splenic marginal zone lymphoma). Cyclin D1 overexpression is known to be essential in the pathogenesis of mantle cell lymphoma (MCL) and amplified in solid tumors such as malignant melanoma. Cyclin D1 overexpression in HCL cells is caused by Wnt/beta-catenin signaling pathway? Given that vemurafenib, one of the BRAF(V600E) inhibitors, is effective for the treatment for difficult-to-cure HCL and decreases the expression of both CD25 and cyclin D1, what kind of molecular machinery is underlying the regulation of cyclin D1 as well as CD25?
Most systematic reviews and case series recommend following up children with asymptomatic unilateral tonsillar enlargement as 73% of tonsillar lymphomas present with unilateral enlargement of palatine tonsils.
I'm planning to perform a Western Blot to determine ALK expression in my cells, however I lack a proper positive control does anybody know about a proper control I could use?
I used EG.7-OVA to make a tumor model with mouse(s.c injection). How can this kind of cells form a solid tumor even if it is a suspension cell type(lymphoma)?
Treatment of relapsed angioimmunoblastic t cell lymphoma
My J774A.1 cells have high levels of constitutive IRF7 protein and minimally induced upon poly (I:C) stimulation. However, its basal IRF7 mRNA level was low and only significantly induced after poly (I:C) challenge (10ug/ml) for 12h. Does anyone explain how this happens? One article has reported that both IRF7 protein and mRNA are highly induced during monocyte to macrophage differentiation. Macrophage like J774 cell may have high IRF7 expression based on this article, but why basal IRF7 mRNA is low? IRF7 has been shown to have oncogenic properties and is upregulated in many types of leukemia and lymphomas. Therefore, IRF7 protein may highly expressed in the transformed cells, like J774 but why basal IRF7 mRNA is not reflected in the translation of its own?
One of my nephews suffer from lymphoma, and now under Intensive Care Unit (ICU). But i am not sure yet which type of lymphoma.
Some people suggest that she should try chlorophyll in combination with medical treatment. Does anybody have experience or experiments with chlorophyll for lymphoma treatment? What do you think?
I found this results in a research about apoptosis in Lymphoma B (WSU-NHL)*, can someone help for interpretation?
Gene 1: UNC5B (= UNC5H2 or p53RDL1) : GPR Fold Change = 90,43
Gene 2: DDIT3 (= CHOP; CEBPZ; CHOP10; CHOP-10; GADD153): GPR Fold Change = 23,23
Gene 3: HRK (= DP5; HARAKIRI) : GPR Fold Change = 15,93
Gene 4: IGF1 (= IGFI; IGF-I; IGF1A): GPR Fold Change = 15,53
Gene 5: TNFRSF1A: GPR Fold Change = 11,06
.....
Gene BNIP3L (= NIX; BNIP3a): GPR Fold Change = -9,31
Gene E2F2 (= E2F-2): GPR Fold Change = -10,98
* We used: Human Apoptosis pathway 96 StellARray™ qPCR Array ; Harbor Bioscientific™).
I have been trying to work with them but I am unable to maintain viable cultures. I have thawed 2 vials so far and they always seem to be growing ok and when I split them .. something goes wrong. I try to maintain the cell count as per ATCC's recommendation. Tried changing the flask size and the way i keep them ( horizontally vs standing position ) but I am unable to solve the problem.
Some tissues might be overfixed, can this affect the outcome incase you need to perfome immunohistochemistry e.g. for lymphomas.
After excision and biopsy of extranodal (isolated) lymphomas of the upper airway: what is next? What forms of chemotherapy are given and for how long? What is the mean follow-up period?
We are planning to treat CML induced mice with aqueous solution of Imatininb.
My question is, how long and at what conditions (temperature and humidity) can we store aqueous solution of Imatininb ?
I have been trying transfections with this cell line, with hardly any success.
Bicistronic IRES vectors don't seem to work
Electroporation has been giving low efficiencies
High concentration of G418 is needed to kill them (in order to use for selection of transfectants)
Can anyone suggest vectors, antibiotics and transfection methods that have worked for this or a similar cell line?
I wonder how I can compare Allele Frequency of some specific SNPs (as homozygous reference/alteration, heterozygous) in our lymphoma population (n=50) with a larger normal population of 1000.
How can I compare or comment on different Chi-sq Hardy-Weinberg equilibrium of these 2 populations?
Is there another way to do it as well?
I am trying to synchronize Raji cells which are suspended cells. But after 24 h of serum starvation they attached to the flask. Does anyone know why they are doing so and how can that be prevented?
I am following a method using phosphate buffer, but unable to find out any degradation of the bendamustine HCl even after 6h.
Patient7: 67 yr old refractory to HyperCVAD awaiting donor match, looking for best bridging therapy likely intolerant to Asparaginase, attempting Flag-IDA clofarabine too expensive
A middle aged women while on long term mercaptopurine and Adalimumab was investigated for flare of her left sided crohn's colitis. Severe colitis on endoscopy. Stool cultures -ve. Colonic biopsies and immuno suggestive of EBV associated lymphoma. CT - no evidence of extracolonic disease. Immunosup held. Please suggest further management ?
I am using Origene lentiviral system. Tried spin infections, with little success.
A 10 year old boy has proptosis of the right eye.. Biopsy results reveal orbital lymphoblastic lymphoma. No brain or bone marrow involvement.
I would like to know how can I clinically differentiate between lymphoma and naso-pharyngeal carcinoma?
We would like to find some prospective plasma biomarkers which, if determined after radiotherapy, can be correlated with a later vascular event or atherosclerosis in patients undergoing radiotherapy of the chest (breast cancer, lymphomas), including the heart. Suggested reading: http://www.sciencedirect.com/science/article/pii/S0735109710001452
Any input is welcomed.
This new marker has been discribed for the diagnosis of marginal zone lymphoma.