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PNA antibody


Antibody ID


Target Antigen

Proper Citation

(Molecular Probes Cat# L21409, RRID:AB_2315178)




Discontinued; This product offered by Molecular Probes (Invitrogen), now part of Thermo Fisher


Molecular Probes

Cat Num

L21409 also L21409

Publications that use this research resource

A subset of ipRGCs regulates both maturation of the circadian clock and segregation of retinogeniculate projections in mice.

  • Chew KS
  • Elife
  • 2017 Jun 15

Literature context: # L21409, RRID:AB_2315178) diluted 1


The visual system consists of two major subsystems, image-forming circuits that drive conscious vision and non-image-forming circuits for behaviors such as circadian photoentrainment. While historically considered non-overlapping, recent evidence has uncovered crosstalk between these subsystems. Here, we investigated shared developmental mechanisms. We revealed an unprecedented role for light in the maturation of the circadian clock and discovered that intrinsically photosensitive retinal ganglion cells (ipRGCs) are critical for this refinement process. In addition, ipRGCs regulate retinal waves independent of light, and developmental ablation of a subset of ipRGCs disrupts eye-specific segregation of retinogeniculate projections. Specifically, a subset of ipRGCs, comprising ~200 cells and which project intraretinally and to circadian centers in the brain, are sufficient to mediate both of these developmental processes. Thus, this subset of ipRGCs constitute a shared node in the neural networks that mediate light-dependent maturation of the circadian clock and light-independent refinement of retinogeniculate projections.

Funding information:
  • NEI NIH HHS - F32 EY020108()
  • NEI NIH HHS - R01 EY017137()
  • NEI NIH HHS - R01 EY019053()
  • NEI NIH HHS - R15 EY026255()
  • NHLBI NIH HHS - R01 HL089742()
  • NIDCD NIH HHS - R01 DC007395()
  • NIGMS NIH HHS - R01 GM076430()
  • NIGMS NIH HHS - R01 GM104991()

Histamine receptors of cones and horizontal cells in Old World monkey retinas.

  • Vila A
  • J. Comp. Neurol.
  • 2012 Feb 15

Literature context:


In primates the retina receives input from histaminergic neurons in the posterior hypothalamus that are active during the day. In order to understand how this input contributes to information processing in Old World monkey retinas, we have been localizing histamine receptors (HR) and studying the effects of histamine on the neurons that express them. Previously, we localized HR3 to the tips of ON bipolar cell dendrites and showed that histamine hyperpolarizes the cells via this receptor. We raised antisera against synthetic peptides corresponding to an extracellular domain of HR1 between the 4th and 5th transmembrane domains and to an intracellular domain near the carboxyl terminus of HR2. Using these, we localized HR1 to horizontal cells and a small number of amacrine cells and localized HR2 to puncta closely associated with synaptic ribbons inside cone pedicles. Consistent with this, HR1 mRNA was detected in horizontal cell perikarya and primary dendrites and HR2 mRNA was found in cone inner segments. We studied the effect of 5 μM exogenous histamine on primate cones in macaque retinal slices. Histamine reduced I(h) at moderately hyperpolarized potentials, but not the maximal current. This would be expected to increase the operating range of cones and conserve ATP in bright, ambient light. Thus, all three major targets of histamine are in the outer plexiform layer, but the retinopetal axons containing histamine terminate in the inner plexiform layer. Taken together, the findings in these three studies suggest that histamine acts primarily via volume transmission in primate retina.

Funding information:
  • NIDA NIH HHS - K01 DA029044(United States)