The ITPRIPL2 Knockout Jurkat Polyclonal Cells constitute a CRISPR/Cas9-edited polyclonal knockout cell population wherein the ITPRIPL2 gene has been disrupted. This loss-of-function model is designed for elucidating the regulatory functions of ITPRIPL2 in T lymphocyte calcium signaling. The product is supplied as a heterogeneous pool of gene-edited cells, minimizing clonal selection biases and better representing the diversity of genetic perturbations.
The Jurkat host cell line, a human T lymphoblastoid model established from a patient with acute T cell leukemia, is a cornerstone for studying T cell receptor (TCR) signaling, calcium dynamics, and apoptotic pathways. Jurkat cells exhibit robust responses to TCR engagement, leading to well-characterized downstream events including calcium mobilization, NFAT translocation, and NF-??B activation. Their genetic tractability and extensive characterization make them a preferred platform for dissecting molecular mechanisms in adaptive immunity and T cell malignancies.
ITPRIPL2 encodes a negative regulator that directly interacts with inositol 1,4,5-trisphosphate receptors (ITPR1, ITPR2, and ITPR3) to suppress IP3-induced calcium release from the endoplasmic reticulum. This inhibition attenuates key calcium-dependent signaling cascades, notably the calcineurin/NFAT and NF-??B pathways, which govern T cell activation, cytokine expression, and apoptosis. Upstream, TCR stimulation triggers calcium influx and activates transcription factors such as NFAT and AP-1, which may regulate ITPRIPL2 expression. Disruption of ITPRIPL2 relieves tonic suppression of IP3 receptors, leading to enhanced calcium flux and augmented activation of calcineurin, NFAT transcription factors, and I??B??/NF-??B signaling.
In Jurkat T cells, ablation of ITPRIPL2 is predicted to potentiate TCR-induced calcium responses, thereby shifting activation thresholds and altering apoptotic sensitivity. This model is directly relevant to pathologies involving dysregulated calcium homeostasis, including T-cell malignancies, autoimmune disorders, and immunodeficiencies. Knockout cells enable investigation of how ITPRIPL2 interfaces with proximal TCR signaling components to influence proliferation, survival, and effector function.
These polyclonal knockout cells facilitate a broad spectrum of functional analyses. Researchers can employ fluorescent calcium indicators such as Fluo-4 AM for real-time flux measurements, Annexin V staining for apoptosis quantification, and NFAT-responsive luciferase reporters to assess transcriptional activity. Co-immunoprecipitation studies of ITPRIPL2 with IP3 receptors, western blot detection of phospho-NFAT and phospho-I??B??, cell viability assays, and flow cytometric measurement of activation markers CD69 and CD25 are also applicable. This model supports screening for IP3 receptor modulators, mechanistic studies of T cell signaling, and exploration of ITPRIPL2’s role in leukemogenesis. For additional information, please contact Ascent Research.
