ArticleJournal of cellular physiology2012
Cdk9 T-loop phosphorylation is regulated by the calcium signaling pathway.
Article in Journal of cellular physiology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
31 citing papers in PubMed, 38 citations in OpenAlex.
- Phosphorylation of CDK9 at Ser175 enhances HIV transcription and is a marker of activated P-TEFb in CD4(+) T lymphocytes.PLoS pathogens · 2013Trial
- Paradoxical Th1 activation and CTLA-4 regulation is beneficial during latent cryptococcosis.mBio · 2026Article
- CDK9 interacts with a RanGTP-importin-β complex to regulate erythroid enucleation.Journal of cell science · 2026Article
- H3 dopaminylation and CaMKII modulate diffuse midline glioma response to CDK9 inhibition.bioRxiv : the preprint server for biology · 2026Article
- An essentialFrontiers in parasitology · 2023Article
- Disrupting the Cdk9/Cyclin T1 heterodimer of 7SK snRNP for the Brd4 and AFF1/4 guided reconstitution of active P-TEFb.Nucleic acids research · 2022Article
- Targeting CDK9 for Anti-Cancer Therapeutics.Cancers · 2021Review
- CDK9: A Comprehensive Review of Its Biology, and Its Role as a Potential Target for Anti-Cancer Agents.Frontiers in oncology · 2021Review
- The effect of alcoholic extract fromCell cycle (Georgetown, Tex.) · 2020Article
- The Cytomegalovirus Protein Kinase pUL97:Host Interactions, Regulatory Mechanisms and Antiviral Drug Targeting.Microorganisms · 2020Review
- Kinase inhibition profiles as a tool to identify kinases for specific phosphorylation sites.Nature communications · 2020Article
- P-TEFb as A Promising Therapeutic Target.Molecules (Basel, Switzerland) · 2020Review
- Cyclin-dependent kinase 7 (CDK7)-mediated phosphorylation of the CDK9 activation loop promotes P-TEFb assembly with Tat and proviral HIV reactivation.The Journal of biological chemistry · 2018Article
- Inhibitors of cyclin-dependent kinases as cancer therapeutics.Pharmacology & therapeutics · 2017Review
- MD simulation of the Tat/Cyclin T1/CDK9 complex revealing the hidden catalytic cavity within the CDK9 molecule upon Tat binding.PloS one · 2017Article
- Role of Host Factors on the Regulation of Tat-Mediated HIV-1 Transcription.Current pharmaceutical design · 2017Review
- Protein Phosphatase-1 -targeted Small Molecules, Iron Chelators and Curcumin Analogs as HIV-1 Antivirals.Current pharmaceutical design · 2017Review
- Cyclin Dependent Kinase 9 Inhibitors for Cancer Therapy.Journal of medicinal chemistry · 2016Article
- Calcium signaling and transcription: elongation, DoGs, and eRNAs.Receptors & clinical investigation · 2016Article
- Hydrazinobenzoylcurcumin inhibits androgen receptor activity and growth of castration-resistant prostate cancer in mice.Oncotarget · 2015Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
2 authors at 1 institution in 1 country.
Funding
Abstract
Eukaryotic RNA polymerase II transcriptional elongation is a tightly regulated process and is dependent upon positive transcription elongation factor-b (P-TEFb). The core P-TEFb complex is composed of Cdk9 and Cyclin T and is essential for the expression of most protein coding genes. Cdk9 kinase function is dependent upon phosphorylation of Thr186 in its T-loop. In this study, we examined kinases and signaling pathways that influence Cdk9 T-loop phosphorylation. Using an RNAi screen in HeLa cells, we found that Cdk9 T-loop phosphorylation is regulated by Ca(2+)/calmodulin-dependent kinase 1D (CaMK1D). Using small molecules inhibitors in HeLa cells and primary CD4(+) T lymphocytes, we found that the Ca(2+) signaling pathway is required for Cdk9 T-loop phosphorylation. Inhibition of Ca(2+) signaling led to dephosphorylation of Thr186 on Cdk9. In reporter plasmid assays, inhibition of the Ca(2+) signaling pathway repressed the PCNA promoter and HIV-1 Tat transactivation of the HIV-1 LTR, but not HTLV-1 Tax transactivation of the HTLV-1 LTR, suggesting that perturbation of the Ca(2+) pathway and reduction of Cdk9 T-loop phosphorylation inhibits transcription units that have a rigorous requirement for P-TEFb function.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.