Related Experiment Video
Updated: Jun 23, 2026

Spatial and Temporal Control of T Cell Activation Using a Photoactivatable Agonist
Published on: April 25, 2018
The mechanism of HTLV-1 LTR activation by TPA varies in different human T-cell lines: role of specific PKC isoforms
Rachel Chamias1, Mahmoud Huleihel, Mordechai Aboud
1The Shraga Segal Department of Microbiology and Immunology, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel.
Abstract:
We demonstrate here that TPA activates HTLV-1 LTR expression in Jurkat and H9 T-cell lines, by strictly different mechanisms. In Jurkat cells this activation is exerted by a PKCalpha- and PKCvarepsilon-antagonized mechanism which operates through an Sp1 binding site residing within the Est responsive region 1 of the LTR. On the other hand, in H9 cells TPA activates the LTR by two consecutive mechanisms; the first depends on PKCeta activity and is exerted through the 21 bp repeats of the LTR, whereas the second is analogous to that observed in Jurkat cells, except that it is antagonized by PKCdelta.
More Related Videos
11:50Retroviral Transduction of Helper T Cells as a Genetic Approach to Study Mechanisms Controlling their Differentiation and Function
Published on: November 4, 2016
07:17Phenotypic and Functional Analysis of Activated Regulatory T Cells Isolated from Chronic Lymphocytic Choriomeningitis Virus-infected Mice
Published on: June 22, 2016
Related Concept Videos
T Cell Activation and Clonal Selection
Naive T cells that have not yet encountered an antigen express two primary CD...
Receptor Tyrosine Kinases
T Cell Types and Functions
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
Enzyme-linked Receptors
Neurotrophin (NT) receptors are a family of RTKs, including trkA, trkB, and trkC (tropomyosin-related kinase) receptors. TrkA is specific for nerve growth factor (NGF), neurotrophin-6, and neurotrophin-7. TrkB binds...