Evidence map›Paper›PMID 17553928›Full record

ArticleMolecular biology of the cell2007

Naked2 acts as a cargo recognition and targeting protein to ensure proper delivery and fusion of TGF-alpha containing exocytic vesicles at the lower lateral membrane of polarized MDCK cells.

Cunxi Li, Mingming Hao, Zheng Cao, Wei Ding, Ramona Graves-Deal, Jianyong Hu, David W Piston, Robert J Coffey

Open access · greenAbstract read
In one paragraph

Article in Molecular biology of the cell, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed
1.7field-weighted citation impact, top 18% 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

31 citing papers in PubMed, 42 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Article
  5. Article
  6. Review
  7. Review
  8. Membrane Transport across Polarized Epithelia.Cold Spring Harbor perspectives in biology · 2017
    Review
  9. Review
  10. Article
  11. Article
  12. Translational profiles of medullary myofibroblasts during kidney fibrosis.Journal of the American Society of Nephrology : JASN · 2014
    Article
  13. Review
  14. Organization and execution of the epithelial polarity programme.Nature reviews. Molecular cell biology · 2014
    Review
  15. Review
  16. A monoclonal antibody produced against Naked2.Monoclonal antibodies in immunodiagnosis and immunotherapy · 2013
    Article
  17. Article
  18. Review
  19. Article
  20. Article
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

8 authors at 1 institution in 1 country.

Cunxi LiDepartment of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, USA.
Mingming Hao
Zheng Cao
Wei Ding
Ramona Graves-Deal
Jianyong Hu
David W Piston
Robert J Coffey
Vanderbilt University Medical Center · US

Funding

Understanding and Controlling p120 Dysfunction in CRCP50CA095103 · NCI · VANDERBILT UNIVERSITY MEDICAL CENTER · PI COFFEY, ROBERT J. · 2002 to 2017
$33.6M
TRANSFORMING GROWTH FACTORS IN COLONIC NEOPLASIAR01CA046413 · NCI · VANDERBILT UNIVERSITY MEDICAL CENTER · PI COFFEY, ROBERT J. · 1988 to 2016
$8.8M
NCI NIH HHS CA 46413NCI NIH HHS CA 95103NCI NIH HHS P50 CA095103NCI NIH HHS R01 CA046413PHS HHS U01 084239
6 · The paper itself

Abstract

Transforming growth factor-alpha (TGF-alpha) is the major autocrine EGF receptor ligand in vivo. In polarized epithelial cells, proTGF-alpha is synthesized and then delivered to the basolateral cell surface. We previously reported that Naked2 interacts with basolateral sorting determinants in the cytoplasmic tail of a Golgi-processed form of TGF-alpha and that TGF-alpha is not detected at the basolateral surface of Madin-Darby canine kidney (MDCK) cells expressing myristoylation-deficient (G2A) Naked2. By high-resolution microscopy, we now show that wild-type, but not G2A, Naked2-associated vesicles fuse at the plasma membrane. We further demonstrate that Naked2-associated vesicles are delivered to the lower lateral membrane of polarized MDCK cells independent of mu1B adaptin. We identify a basolateral targeting segment within Naked2; residues 1-173 redirect NHERF-1 from the apical cytoplasm to the basolateral membrane, and internal deletion of residues 37-104 results in apical mislocalization of Naked2 and TGF-alpha. Short hairpin RNA knockdown of Naked2 leads to a dramatic reduction in the 16-kDa cell surface isoform of TGF-alpha and increased cytosolic TGF-alpha immunoreactivity. We propose that Naked2 acts as a cargo recognition and targeting (CaRT) protein to ensure proper delivery, tethering, and fusion of TGF-alpha-containing vesicles to a distinct region at the basolateral surface of polarized epithelial cells.

Indexed as

Cell PolarityExocytosisMembrane FusionAdaptor Protein Complex 1Adaptor Proteins, Signal TransducingAnimalsCalcium-Binding ProteinsCarrier ProteinsCell MembraneCell SurvivalCytosolDogsHumansMicroscopy, FluorescenceProtein Structure, TertiaryProtein TransportAdaptor Protein Complex 1Adaptor Proteins, Signal TransducingCalcium-Binding ProteinsCarrier ProteinsNKD2 protein, humanRNA, Small InterferingTanninsTransforming Growth Factor alpha

Identifiers

PMID17553928
PMCPMC1949375
OpenAlexW2096268578

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.