Flow demo (T cell interaction with human in vitro BBB model under flow)
I attached a link to a short presentation regarding the flow movie setups. The figures and videos will be explained in detail during the meeting on Friday.
I attached a link to a short presentation regarding the flow movie setups. The figures and videos will be explained in detail during the meeting on Friday.
Overview Recently, we performed a series of flow cytometry studies assessing neutrophil (PMN) activation in first generation flow devices. All the relevant data and can be found in a previous post: here. As part of the analysis, we chose to quantify relative PMN activation by comparing isotype control histograms against L-selectin (CD62L) expression histograms. This…
IntroductionThe ability to continuously sample and assay for the levels of soluble factors without disrupting the microenvironment is important to acquire sequential secretion profiles in BBB experiments on an uSIM module. Combining small volume sampling, buffer replenishment and sensitive pedELISA technology would enable longitudinal assays of proteins introduced to blood compartment or released from cells….
NOTE: Some of the ideas in this post are borrowed and rephrased from prior posts by Molly and Alec and our paper Khire et al. 2020. The purpose of this thread is to explain things anew with an eye on application in the R61 project. Small molecule diffusion from the well to the channel side…
Introduction In our labs previously work, difficulties in growing endothelial cells (ECs) under shear flow lead to the exploration of novel membrane technologies that permit firm EC attachment, without compromising membrane permeability or leukocyte transmigration studies. We ultimately landed on the development of effectively ‘dual-scale’ membranes that contained 3 μm pores dispersed amongst an NPN…
Note: A postscript regarding a gelatin assay to determine MMP-9 activity was added to this post on Feb 25, 2021. Introduction The blood-brain barrier (BBB) plays an important role in maintaining brain chemistry by restricting the permeability of undesirable small molecules and cells. Inflammatory diseases may disrupt the BBB and promote the development of neurological…
Introduction The blood-brain barrier (BBB) plays an important role in maintaining brain chemistry by restricting the permeability of small molecules and cells. Inflammatory diseases may disrupt the BBB and promote the development of neurological disorders [1]. One potential mechanism of BBB disruption is the degradation of the extracellular matrix proteins that make up the vascular…
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Micro three-way valve http://www.theleeco.com
#LFYA1226032H 12volts 0.054inch ports(push on tubing)& deadspace=22uL
You do need to make an electronic box- I had one made by our department’s electronics guy.
Thanks for showing us your system- Always interested in seeing the clever ways people do this stuff!
Coisne, C., R. Lyck, and B. Engelhardt, Live cell imaging techniques to study T cell trafficking across the blood-brain barrier in vitro and in vivo. Fluids Barriers CNS, 2013. 10(1): p. 7.
I upload pdf file of this paper and recorded zoom meeting in media.