Only CD8 positive cells in hPMBC humanized model, no CD4 cells?

We have been using hPBMC-NOG mice for humanized mice. After tumor has grown to a 800mm3, we have done immunophenotyping of these tumors. We consistently observing that CD4+ cells are completely...

03 April 2019 9,616 1 View

Commercial Source for Immortalized Human Killer Cells?

Hi all, I am planning for ADCC (not with PBMCs) assay and looking for a commercial source for immortalized CD3-CD56+ Natural Killer cells. I know ATCC has NK-92 cells, but I am looking for an...

03 April 2018 7,516 1 View

Cetuximab Resistant PDx models?

Looking for a CRO/academic collaboration who has cetuximab resistant HNSCC/CRC pdx models. Anybody has these models?

02 March 2018 3,158 1 View

I am looking for a Hu-EGFR and mouse-EGFR plasmid for stable transfections. Anybody have it? Any commercial sources?

I need to stably transfect hu-EGFR and mouse-EGFR in murine cell lines, seperately. Please help us.

01 February 2018 3,679 3 View

Where to buy Luciferase Plasmid for profit organizations?

Hi, I work for a profit organization. I was trying to buy a firefly luciferase plasmid to transfect into cell lines for Caliper IVIS in vivo xenografts luminescence imaging. I know, Addgene is a...

01 February 2018 1,556 2 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View

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02 March 2021 3,060 3 View

Issues with Permeabilization during Flow Cytometry?

Hello Everyone. Currently I am working to characterize macrophages in the myocardium after ischemia-reperfusion injury in rats. Due to the low total cell number isolated from rat hearts I can...

01 March 2021 3,867 3 View

Which cell line should we use to perform biological dosimetry experiments?

We are preparing some experiments based on irradiating cells under different conditions in order to evaluate the effects in terms of DNA damage, genetic expression, etc. As our project is...

01 March 2021 3,355 3 View

Is it possible for two human neuronal cell lines to have different gene sequence for the same protein?

I am looking at the ATP1A2 (Sodium/Potassium ATPase alpha subunit 2) in two human neuronal cell lines. Expression levels of this protein seems to be almost equal when detected by one antibody....

01 March 2021 3,607 3 View

Is CD44 degraded in lysosome together with hyaluronan after CD44 mediated endocytosis of hyaluronic acid?

Also when RHAMM binds hyaluronic acid, they get internalized, will RHAMM also be degraded? Or both CD44 and RHAMM will be transferred back to the cell membrane? Asking for breast cancer cell line...

01 March 2021 8,169 2 View

Do you need the CMV enhancer before the CMV promotor for a proper function of CMV on the gene that follows?

I'm a student and I have to produce a cell line with a knockin for the NRF2 gene with GFP. I have to put a promotor in front of the GFP because the gene will be too far away from the promotor of...

28 February 2021 7,127 2 View

What could be some reasons why unstimulated monocytes are getting activated?

Im doing PBMC isolation -> CD14+ enrichment using magnetic beads -> stimulation setup. My negative control is just cells in cRPMI but they seem to get activated over and over again.

28 February 2021 7,883 3 View

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28 February 2021 9,936 2 View

Has anyone had luck using cell lines other than HEK 293 (such as COS1) to package lentivirus?

I am looking to package lentivirus in endothelial cells but I am opposed to using 293 cells due to personal ethics regarding the source. I have done some reading and saw that COS1, COS7, & CHO...

25 February 2021 3,030 1 View