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Related Concept Videos

Regulated mRNA Transport02:22

Regulated mRNA Transport

In eukaryotes, transcription and translation are compartmentalized; an mRNA is first synthesized in the nucleus and then selectively transported to the cytoplasm for protein synthesis. Before transport, a pre-mRNA undergoes several steps of post-transcriptional modifications including splicing, 5' capping, and the addition of a poly-adenine tail. Various proteins bind to the pre-mRNA during these modifications. The mRNA transport takes place with the help of multiple proteins playing specific...
lncRNA - Long Non-coding RNAs02:39

lncRNA - Long Non-coding RNAs

In humans, more than 80% of the genome gets transcribed. However, only around 2% of the genome codes for proteins. The remaining part produces non-coding RNAs which includes ribosomal RNAs, transfer RNAs, telomerase RNAs, and regulatory RNAs, among other types. A large number of regulatory non-coding RNAs have been classified into two groups depending upon their length – small non-coding RNAs, such as microRNA, which are less than 200 nucleotides in length, and long non-coding RNA (lncRNA)...
Regulation of Expression at Multiple Steps01:23

Regulation of Expression at Multiple Steps

The gene expression in cells is regulated at different stages: (i) transcription, (ii) RNA processing, (iii) RNA localization, and (iv) translation. Transcriptional regulation is mediated by regulatory proteins such as transcription factors, activators, or repressors—these control gene expression by initiating or inhibiting the transcription of genes. Once a precursor or pre-mRNA is produced, it undergoes post-transcriptional modification, including 5' capping, splicing, and the addition of a...
Ribosome Profiling02:24

Ribosome Profiling

Ribosome profiling or ribo-sequencing is a deep sequencing technique that produces a snapshot of active translation in a cell. It selectively sequences the mRNAs protected by ribosomes to get an insight into a cell’s translation landscape at any given point in time.
Applications of ribosome profiling
Ribosome profiling has many applications, including in vivo monitoring of translation inside a particular organ or tissue type and quantifying new protein synthesis levels.
The technique helps...
Ribosomal RNA Synthesis02:53

Ribosomal RNA Synthesis

Ribosome synthesis is a highly complex and coordinated process involving more than 200 assembly factors. The synthesis and processing of ribosomal components occurs not only in the nucleolus but also in the nucleoplasm and the cytoplasm of eukaryotic cells.
Ribosome biogenesis begins with the synthesis of 5S and 45S pre-rRNAs by distinct RNA polymerases. The primary transcripts are extensively processed and modified before they are bound and folded by ribosomal proteins and assembly factors,...
RNA Editing02:23

RNA Editing

RNA editing is a post-transcriptional modification where a precursor mRNA (pre-mRNA) nucleotide sequence is changed by base insertion, deletion, or modification. The extent of RNA editing varies from a few hundred bases, in mitochondrial DNA of trypanosomes, to a just single base, in nuclear genes of mammals. Even a single base change in the pre-mRNA can convert a codon for one amino acid into the codon for another amino acid or a stop codon. This type of re-coding can significantly affect the...

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[Cellular localization and tissue expression pattern of UCA1, a non-coding RNA].

Xiao-juan Xie1, Xu Li, Fan Wang

  • 1Center for Molecular Medicine, First Affiliated Hospital, Xi'an Jiaotong University College of Medicine, Xi'an 710061, China. xie198105@163.com

Nan Fang Yi Ke Da Xue Xue Bao = Journal of Southern Medical University
|February 2, 2010
PubMed
Summary
This summary is machine-generated.

Urothelial carcinoma-associated 1 (UCA1) is found in the cytoplasm and its expression correlates with bladder cancer progression, suggesting it may serve as a specific bladder cancer marker.

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Area of Science:

  • Molecular biology
  • Genetics
  • Oncology

Context:

  • Urothelial carcinoma-associated 1 (UCA1) is a long non-coding RNA.
  • The role of UCA1 in bladder carcinoma is not fully understood.

Purpose:

  • To determine the subcellular localization of UCA1.
  • To analyze the tissue expression of UCA1.
  • To investigate the association between UCA1 expression and bladder cancer progression.

Summary:

  • UCA1 was found in the cell membrane, cytoplasm, and nuclei.
  • UCA1 is overexpressed in placental and fetal bladder tissues.
  • UCA1 expression is elevated in various tumor tissues, notably in bladder cancer compared to normal bladder tissues.

Impact:

  • UCA1 is located in the cytoplasm.
  • UCA1 expression levels correlate with bladder cancer progression.
  • UCA1 shows potential as a specific biomarker for bladder cancer detection and management.