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Related Concept Videos

MicroRNAs01:22

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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...
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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...
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The psychodynamic perspective in psychology asserts that most personality functions operate unconsciously, outside of awareness. This means that the motives and emotions driving behavior often remain hidden, automatically buried in the unconscious mind as a defense mechanism to shield us from psychological distress. According to this theory, the unconscious mind contains thoughts, memories, and emotions that are too disturbing to face directly.
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In a study where individuals posing as strangers offered compliments and proposed casual sex to students, the responses differed significantly based on gender. Not a single woman accepted the proposal, while 70% of the men agreed. This outcome provides a useful scenario to explore through the lens of evolutionary psychology and social learning theory, highlighting the diverse perspectives on human sexual behaviors.
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Behaviorists view personality as primarily shaped by environmental reinforcements and consequences. According to this perspective, behavior is influenced by external stimuli, and individuals adjust their actions based on rewards and punishments. Over time, learning histories — accumulated patterns of reinforcement — play a significant role in shaping personality. Behaviors that lead to positive outcomes are reinforced, while those resulting in negative outcomes are diminished.
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In Vivo Nanovector Delivery of a Heart-specific MicroRNA-sponge
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MicroRNA Detection Specificity: Recent Advances and Future Perspective.

Tinglan Ouyang1, Zhiyu Liu1, Zhiyi Han2

  • 1State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering , Southeast University , Nanjing 210096 , China.

Analytical Chemistry
|February 1, 2019
PubMed
Summary
This summary is machine-generated.

Accurate detection of microRNAs (miRNAs) is crucial for disease diagnosis and treatment. This review highlights methods to improve miRNA detection specificity, addressing a gap in current research.

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Genomics

Background:

  • MicroRNAs (miRNAs) are key regulators of gene expression.
  • miRNA expression levels are vital for disease diagnosis, targeted therapy, and prognosis.
  • Current research emphasizes improving miRNA detection sensitivity, but specificity improvements are less explored.

Purpose of the Study:

  • To provide a retrospective summary of common miRNA detection methods.
  • To highlight strategies for enhancing miRNA detection specificity, particularly for homologous families.
  • To review advancements in improving the overall accuracy of miRNA detection.

Main Methods:

  • Review of established miRNA detection techniques: Northern blot, RT-qPCR, next-generation sequencing, and microarray.
  • Analysis of strategies combining common methods to improve specificity.
  • Classification of techniques contributing to enhanced detection accuracy.

Main Results:

  • Common methods like Northern blot and RT-qPCR are mature and stable but face specificity challenges.
  • Breakthroughs in traditional techniques offer pathways to improved specificity.
  • Combinatorial approaches and classified strategies significantly enhance miRNA detection accuracy.

Conclusions:

  • Improving miRNA detection specificity is critical for advancing early disease diagnosis and treatment.
  • The review categorizes and details methods for enhancing specificity, especially for closely related miRNA families.
  • Enhanced accuracy in miRNA detection promises significant progress in clinical applications.