Peripheral T-cell Reconstitution
Peripheral T-cell Reconstitution - Related Videos
07:05
Reconstitution of Membrane Proteins
0 Views •
2023
Reconstitution is the process of returning an isolated biomolecule to its original form or function. This is particularly useful for studying membrane proteins, which enable important cellular functions and affect the behavior of nearby lipids. To study the function of purified membrane proteins in situ, they must be reconstituted by integrating them into an artificial lipid membrane. This video introduces membrane protein reconstitution concepts and related procedures, such as protein...
09:29
Clinical Application of Sleeping Beauty and Artificial Antigen Presenting Cells to Genetically Modify T Cells from Peripheral and Umbilical Cord Blood
0 Views •
Cited by 53 •
2013
T cells expressing a CD19-specific chimeric antigen receptor (CAR) are infused as investigational treatment of B-cell malignancies in our first-in-human gene therapy trials. We describe genetic modification of T cells using the Sleeping Beauty (SB) system to introduce CD19-specific CAR and selective propagation on designer CD19+ artificial antigen presenting cells.
09:25
In vitro Reconstitution of the Active T. castaneum Telomerase
0 Views •
Cited by 5 •
2011
Efforts to isolate the catalytic subunit of telomerase, TERT, in sufficient quantities for structural studies, have been met with limited success for more than a decade. Here, we present methods for the isolation of the recombinant Tribolium castaneum TERT (TcTERT) and the reconstitution of the active T. castaneum telomerase ribonucleoprotein (RNP) complex in vitro.
13:08
Expansion of Human Peripheral Blood γδ T Cells using Zoledronate
0 Views •
Cited by 87 •
2011
A method to expand γδ T cells from peripheral blood mononuclear cells (PBMC) is described. PBMC-derived γδ T cells are stimulated and expanded using zoledronate and interleukin-2 (IL-2). Large scale expansion of γδ T cells can be applied to autologous cellular immunotherapy of cancer.
03:14
Ex Vivo Expansion of Natural Killer Cells from Peripheral Blood Mononuclear Cells
0 Views •
2025
This video demonstrates a technique for the expansion of natural killer (NK) cells directly from peripheral blood mononuclear cells (PBMCs) using a feeder cell line. PBMCs are co-cultured with genetically modified lymphoblastoid feeder cells expressing membrane-bound interleukin-21 (mIL-21), and the culture is supplemented with the cytokines interleukin-2 (IL-2) and interleukin-15 (IL-15). Together, this cocktail of ligands leads to the prolonged expansion of NK cells with high purity.
FAQs
Homeostatic expansion rapidly increases the numbers of mature donor or residual T cells already present in peripheral tissues, whereas thymopoiesis generates new naïve T cells. These processes therefore restore cellular abundance through different routes. Expansion can support earlier recovery, while thymopoiesis rebuilds the breadth of T-cell receptor specificities needed for a more diverse adaptive immune response.
A diverse T-cell receptor repertoire allows recovered lymphocytes to recognize a broader range of antigens. Peripheral expansion alone may increase cell numbers without fully recreating this diversity, while thymic production of naïve T cells contributes to repertoire rebuilding. Consequently, evaluating recovery requires attention to the quality and breadth of immune restoration, not only circulating T-cell quantity.
Recovery that is delayed or limited in quality can leave adaptive immune defense incomplete after immune depletion. Insufficient restoration may contribute to susceptibility to opportunistic pathogens, while improved recovery supports broader immune competence. The timing of restoration is therefore important for interpreting vulnerability during follow-up and for planning infection prevention strategies in transplantation and treatment settings.
Monitoring should address both the extent and the character of T-cell recovery. Researchers can examine restoration of circulating lymphocytes alongside evidence that thymopoiesis is rebuilding a diverse receptor repertoire. They can also relate these findings to immune competence, susceptibility to opportunistic pathogens, and vaccine responsiveness. This combined view distinguishes numerical recovery from more complete functional restoration.
Recovery data help indicate whether the immune system has regained sufficient T-cell support for effective vaccine responses. Assessing the timing and quality of reconstitution provides context for interpreting weak or improving responsiveness after transplantation or treatment. This information can support evaluation of immune competence and help researchers relate cellular recovery to the success of preventive vaccination strategies.
The process is especially relevant after hematopoietic stem cell transplantation and other forms of immune depletion, when researchers need to understand the return of adaptive defense. It also informs studies of opportunistic infection susceptibility, vaccine responsiveness, and immune-based therapies. Linking reconstitution patterns with these outcomes can clarify whether restored T-cell populations provide meaningful protection.