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Related Concept Videos

Master Transcription Regulators02:23

Master Transcription Regulators

Master transcription regulators are regulatory proteins that are predominantly responsible for regulating the expression of multiple genes. Often these genes work in concert to drive a  complex process. Activation of a master transcription regulator can lead to a cascade of transcriptional activation necessary for that outcome. These regulators can directly bind to the regulatory sequences of the various genes involved, or they can indirectly regulate transcription by binding to regulatory...
Receptor Downregulation in MVBs01:15

Receptor Downregulation in MVBs

Multivesicular bodies (MVBs) are mature endosomes that sort ubiquitinated proteins and then fuse with lysosomes to degrade the sorted proteins. Epidermal growth factor (EGF) and its receptor (EGFR) form a complex that can be internalized through endocytosis, sorted into an MVB, and later degraded.
The EGFR can initiate signaling pathways that  lead to cell proliferation, migration, and differentiation. Overexpression of EGFR  stimulates cells to proliferate. Excessive  EGFR activation may...
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...
Negative Regulator Molecules01:23

Negative Regulator Molecules

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Related Experiment Video

Updated: Jun 2, 2026

Methods to Discover Alternative Promoter Usage and Transcriptional Regulation of Murine Bcrp1
11:02

Methods to Discover Alternative Promoter Usage and Transcriptional Regulation of Murine Bcrp1

Published on: May 27, 2016

miR-29c regulates BACE1 protein expression.

Yuanyuan Zong1, Hailin Wang, Wei Dong

  • 1Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences (CAMS) & Comparative Medicine Center, Peking Union Medical Collage (PUMC), No. 5, Panjiayuan, Nanli, Chaoyang District, Beijing 10021, PR China.

Brain Research
|May 14, 2011
PubMed
Summary

MicroRNA-29c (miR-29c) effectively reduces Beta-secretase 1 (BACE1) protein levels. This discovery highlights miR-29c as a potential regulator of BACE1, impacting its expression in neurological contexts.

Related Experiment Videos

Last Updated: Jun 2, 2026

Methods to Discover Alternative Promoter Usage and Transcriptional Regulation of Murine Bcrp1
11:02

Methods to Discover Alternative Promoter Usage and Transcriptional Regulation of Murine Bcrp1

Published on: May 27, 2016

Area of Science:

  • Molecular Biology
  • Neuroscience
  • Genetics

Background:

  • MicroRNAs (miRNAs) are small endogenous RNA molecules that regulate protein expression.
  • Beta-secretase 1 (BACE1) plays a critical role in amyloid precursor protein processing.
  • Previous studies indicated that miRNAs regulate BACE1 expression.

Purpose of the Study:

  • To investigate the regulatory role of microRNA-29c (miR-29c) on BACE1 protein expression.
  • To validate miR-29c as a potential endogenous regulator of BACE1.

Main Methods:

  • In silico analysis to identify putative miR-29c binding sites on BACE1 mRNA.
  • In vitro studies using SH-SY5Y and HEK-293T cell lines for miR-29c over-expression.
  • In vivo studies using miR-29c transgenic mice.

Main Results:

  • In silico analysis predicted two target sites for miR-29c in BACE1 mRNA.
  • Over-expression of miR-29c led to a significant downregulation of BACE1 protein levels in cell lines.
  • miR-29c over-expression in transgenic mice also resulted in reduced BACE1 protein levels.

Conclusions:

  • MicroRNA-29c (miR-29c) effectively downregulates Beta-secretase 1 (BACE1) protein expression.
  • These findings suggest that miR-29c acts as an endogenous regulator of BACE1.
  • miR-29c represents a potential therapeutic target for conditions involving BACE1 dysregulation.