Evidence map›Paper›PMID 21957496›Full record

ArticleRNA biology

Differential effects of PKA-controlled CaMKK2 variants on neuronal differentiation.

Wenguang Cao, Muhammad Sohail, Guodong Liu, Geremy A Koumbadinga, Vincent G Lobo, Jiuyong Xie

Open access · hybridAbstract read
In one paragraph

Article in RNA biology. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
1.2field-weighted citation impact, top 22% of its field
1 · What the graph read from it

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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

22 citing papers in PubMed, 36 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Review
  5. Article
  6. Article
  7. Prox1 inhibits neurite outgrowth during central nervous system development.Cellular and molecular life sciences : CMLS · 2021
    Article
  8. Article
  9. Article
  10. Muscarinic Toxin 7 Signals Via CaMolecular neurobiology · 2020
    Article
  11. Article
  12. Article
  13. Loss of CaFrontiers in molecular biosciences · 2018
    Article
  14. Review
  15. Article
  16. Article
  17. Article
  18. Review
  19. Inhibition of Ca²⁺/calmodulin-dependent protein kinase kinase 2 stimulates osteoblast formation and inhibits osteoclast differentiation.Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research · 2013
    Article
  20. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 1 institution in 1 country.

Wenguang CaoDepartment of Physiology, Faculty of Medicine, University of Manitoba, Winnipeg, Canada.
Muhammad Sohail
Guodong Liu
Geremy A Koumbadinga
Vincent G Lobo
Jiuyong Xie
University of Manitoba · CA

Funding

CIHR 106608CIHR FRN106608CIHR FRN68919
6 · The paper itself

Abstract

Regulation between protein kinases is critical for the establishment of signaling pathways/networks to 'orchestrate' cellular processes. Besides posttranslational phosphorylation, alternative pre-mRNA splicing is another way to control kinase properties, but splicing regulation between two kinases and the effect of resulting variants on cells has barely been explored. Here we examined the effect of the protein kinase A (PKA) pathway on the alternative splicing and variant properties of the Ca²⁺/calmodulin-dependent protein kinase kinase 2 (CaMKK2) gene in B35 neuroblastoma cells. Inclusion of the exon 16 of CaMKK2 was significantly reduced by H89, a PKA selective inhibitor. Consistently, overexpressed PKA strongly promoted the exon inclusion in a CaMKK2 sequence-dependent way in splicing reporter assays. In vitro, purified CaMKKβ1 variant proteins were found to be kinase-active. In cells, they were differentially phosphorylated by PKA. In RNA interference assays, CaMKKβ1 was found to be essential for forskolin-induced neurite growth. Interestingly, overexpression of the variant without exon 16 (-E16) promoted neurite elongation while the other one (+E16) promoted neurite branching; in contrast, reduction of the latter one enhanced neurite elongation. Moreover, the variants are differentially expressed and the exon 16-containing transcripts highly enriched in the brain, particularly the cerebellum and hippocampus. Thus, PKA regulates the alternative splicing of CaMKK2 to produce variants that differentially modulate neuronal differentiation. Taken together with the many distinct variants of kinases, alternative splicing regulation likely adds another layer of modulation between protein kinases in cellular signaling networks.

Indexed as

Cell DifferentiationAlternative SplicingAmino Acid SequenceAnimalsCalcium-Calmodulin-Dependent Protein Kinase KinaseCell LineCell Line, TumorColforsinCyclic AMP-Dependent Protein KinasesExonsHEK293 CellsHumansImmunoblottingIsoenzymesIsoquinolinesMolecular Sequence DataCalcium-Calmodulin-Dependent Protein Kinase KinaseCAMKK2 protein, humanCamkk2 protein, ratColforsinCyclic AMP-Dependent Protein KinasesIsoenzymesIsoquinolinesN-(2-(4-bromocinnamylamino)ethyl)-5-isoquinolinesulfonamideProtein Kinase InhibitorsSulfonamides

Identifiers

PMID21957496
PMCPMC3256423
OpenAlexW2059732547

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.