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As they leave the Endoplasmic Reticulum (ER), properly folded and assembled proteins are selectively packaged into vesicles. These vesicles are transported by microtubule-based motor proteins and fuse together to form vesicular tubular clusters, subsequently arriving at the Golgi apparatus, a eukaryotic endomembrane organelle that often has a distinctive ribbon-like appearance.
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Clamper Circuit01:14

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A clamper circuit, also known as a DC restorer, represents a specialized variant of the rectifier circuit, notable for its method of taking the output across the diode rather than the capacitor. This configuration lends to several distinctive applications, particularly in handling square wave inputs.
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Van de Graaff Generator01:15

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Van de Graaff generators (or Van de Graaffs) are devices used to demonstrate high voltage due to static electricity that can also be used for research. Robert Van de Graaff first built one in 1931 (based on original suggestions by Lord Kelvin) for use in nuclear physics research.
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Properly folded and assembled proteins are selectively packaged into vesicles that exit the ER. Motor proteins transport these vesicles to the Golgi apparatus for adding modifications that make these proteins functional at their destination.
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Related Experiment Video

Updated: Jan 11, 2026

Revealing Electromechanical Control of Tissue Homeostasis Using a Two-Layer Microfluidic Device
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[GIST].

Toshihiko Doi1

  • 1Division of Digestive Endoscopy/Gastrointestinal Oncology, National Cancer Center Hospital East, Kashiwa-shi, Chiba, Japan.

Gan to Kagaku Ryoho. Cancer & Chemotherapy
|May 20, 2008
PubMed
Summary

Gastrointestinal stromal tumors (GIST) are driven by c-kit mutations. Targeted therapy like imatinib effectively inhibits this molecular defect, revolutionizing GIST treatment, especially for metastatic cases.

Area of Science:

  • Oncology
  • Molecular Biology
  • Gastroenterology

Background:

  • Gastrointestinal stromal tumor (GIST) is the most common mesenchymal neoplasm of the GI tract.
  • Recent advances have identified key pathogenetic defects and led to targeted therapies for GIST.
  • GIST pathogenesis involves gain-of-function mutations in the c-kit protooncogene, leading to constitutive Kit receptor tyrosine kinase activation and malignant proliferation.

Purpose of the Study:

  • To highlight the significance of understanding GIST pathogenetic defects.
  • To discuss the development and impact of specific molecular inhibitors for GIST.
  • To review the efficacy of imatinib (Gleevec) in treating GIST, particularly metastatic disease.

Main Methods:

  • Review of scientific literature on GIST pathogenesis and targeted therapy.

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  • Analysis of the role of c-kit mutations in GIST development.
  • Evaluation of imatinib's mechanism of action and clinical outcomes.

    • Main Results:

    • Imatinib selectively inhibits the activated c-Kit tyrosine kinase.
    • The efficacy of imatinib demonstrates that targeted inhibitors can overcome genetic defects driving cancer.
    • Imatinib has revolutionized the treatment of metastatic GIST.

    Conclusions:

    • Targeted therapy based on specific molecular defects is a paradigm shift in cancer treatment.
    • Further development of molecularly targeted agents for GIST is ongoing.
    • Understanding the molecular basis of GIST has paved the way for effective therapeutic strategies.