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RNA Splicing01:32

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Splicing is the process by which eukaryotic RNA is edited before its translation into protein. The RNA strand transcribed from eukaryotic DNA is called the primary transcript. The primary transcripts that become mRNAs are called precursor messenger RNAs (pre-mRNAs). Eukaryotic pre-mRNA contains alternating sequences of exons and introns. Exons are nucleotide sequences that code for proteins, whereas introns are the non-coding regions. In RNA splicing, introns are removed and exons are bonded...
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Functional Assessment of BRCA1 variants using CRISPR-Mediated Base Editors
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BRCA1-No Matter How You Splice It.

Dan Li1, Lisa M Harlan-Williams1,2, Easwari Kumaraswamy1,3

  • 1The University of Kansas Cancer Center, Kansas City, Kansas.

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|April 18, 2019
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Summary

Breast cancer susceptibility gene BRCA1 (breast cancer 1, early onset) exhibits alternative splicing. These variants may regulate BRCA1 inactivation and impact cancer diagnosis and therapy.

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Area of Science:

  • Genetics
  • Molecular Biology
  • Oncology

Background:

  • BRCA1 (breast cancer 1, early onset) is a key gene associated with breast cancer susceptibility.
  • BRCA1 is extensively alternatively spliced, producing various transcript variants.
  • Alternative splicing of BRCA1 may function as a regulatory mechanism for gene inactivation in cancers.

Purpose of the Study:

  • To review functional alternative splicing transcripts of BRCA1.
  • To discuss next-generation sequencing methods for detecting BRCA1 splicing patterns.
  • To explore the potential of BRCA1 splicing in cancer diagnosis, prognosis, and therapy.

Main Methods:

  • Literature review of BRCA1 alternative splicing.
  • Summary of next-generation sequencing techniques for transcript analysis.
  • Analysis of functional roles of BRCA1 splice variants.

Main Results:

  • BRCA1 alternative transcripts can mimic, possess unique, or oppose full-length BRCA1 functions.
  • Naturally occurring alternative splicing patterns of BRCA1 are diverse.
  • Next-generation sequencing offers advanced detection capabilities for BRCA1 splicing.

Conclusions:

  • BRCA1 alternative splicing is a significant factor in breast cancer and other associated malignancies.
  • Detection of BRCA1 splicing patterns holds promise for improved cancer management.
  • Further research into BRCA1 splicing variants can inform diagnostic and therapeutic strategies.