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Related Concept Videos

MicroRNAs01:22

MicroRNAs

MicroRNA (miRNA) are short, regulatory RNA transcribed from introns (non-coding regions of a gene) or intergenic regions (stretches of DNA present between genes). Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself, forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA...
MicroRNAs01:22

MicroRNAs

MicroRNA (miRNA) are short, regulatory RNA transcribed from introns—non-coding regions of a gene—or intergenic regions—stretches of DNA present between genes. Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA ends...
Microbiome of the Eye01:22

Microbiome of the Eye

The human eye has a specialized microbiota that reflects its unique anatomical and immunological environment. This low-biomass microbial community predominantly colonizes the conjunctiva and eyelid margins, playing a vital role in ocular surface homeostasis and defense. Despite its proximity to the richly colonized facial skin, the ocular surface maintains a distinct microbial profile due to continuous mechanical and biochemical defense mechanisms.The conjunctival surface hosts fewer microbial...

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In ovo Expression of MicroRNA in Ventral Chick Midbrain
09:19

In ovo Expression of MicroRNA in Ventral Chick Midbrain

Published on: September 16, 2013

MiRNA expression in the eye.

Kristen M Huang1, Tzvete Dentchev, Dwight Stambolian

  • 1Department of Ophthalmology, University of Pennsylvania, Philadelphia, PA 19104-6055, USA. huangkri@mail.med.upenn.edu

Mammalian Genome : Official Journal of the International Mammalian Genome Society
|July 24, 2008
PubMed
Summary
This summary is machine-generated.

MicroRNAs (miRNAs) are small RNAs regulating gene expression. This review explores ocular miRNA expression and highlights the need for research into their function in eye development.

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Area of Science:

  • Molecular Biology
  • Genetics
  • Ophthalmology

Background:

  • MicroRNAs (miRNAs) are small noncoding RNAs regulating gene expression via translational repression and mRNA degradation.
  • miRNAs play crucial roles in biological processes such as tissue differentiation and development.
  • Recent detection of miRNAs in the eye has initiated exploration of their ocular functions.

Purpose of the Study:

  • To review current information on ocular miRNA expression.
  • To identify knowledge gaps regarding the function of ocular miRNAs.
  • To guide future research directions in the field of ocular miRNA biology.

Main Methods:

  • Literature review of studies on miRNA expression in ocular tissues.
  • Analysis of existing miRNA expression data in the eye.
  • Synthesis of current understanding of ocular miRNA roles.

Main Results:

  • miRNAs have been detected in various ocular tissues.
  • The specific target genes regulated by ocular miRNAs are largely undefined.
  • Evidence suggests miRNAs are involved in ocular development and differentiation.

Conclusions:

  • Ocular miRNAs represent a significant area for future research.
  • Further investigation is needed to elucidate the functional roles of miRNAs in eye development.
  • Understanding ocular miRNA targets is critical for advancing ophthalmology.