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Related Concept Videos

Internal Combustion Engine01:20

Internal Combustion Engine

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The internal combustion engine is a heat engine that uses the byproducts of combustion as the working fluid instead of using a heat transfer medium to transfer heat. The combustion is done in a way that produces high-pressure combustion products that can be expanded through a turbine or piston to create work. Internal combustion engines can again be categorized into three kinds: (1) spark ignition gasoline engines, most commonly used in automobiles, (2) compression ignition diesel engines that...
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Design Example: Automobile Ignition System01:14

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The automobile's ignition system plays a vital role by ensuring the timely ignition of the fuel-air mixture in each cylinder. This ignition is facilitated by a spark plug, which is composed of two electrodes separated by an air gap. A spark forms across this air gap when a substantial voltage is generated between the electrodes, leading to the ignition of the fuel.
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Design Example: Vintage Mixing Console01:17

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A sound engineer at a music company recently encountered a problem. The output from their newly acquired studio's vintage mixing console was too low for the requirements of modern recording equipment. To rectify this situation, the engineer decided to design an audio pre-amplifier using an operational amplifier (op-amp) to boost the signal level.
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PD Controller: Design01:26

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In automotive engineering, car suspension systems often employ Proportional Derivative (PD) controllers to enhance performance. PD controllers are utilized to adjust the damping force in response to road conditions. A controller, acting as an amplifier with a constant gain, demonstrates proportional control, with output directly mirroring input.
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Construction and Characterization of a Novel Vocal Fold Bioreactor
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Engineered CD8

Hanchae Cho1, Inseong Jung2, Hyunji Ju3

  • 1Exosome Convergence Research Center (ECRC), Kyungpook National University, Daegu 41944, Republic of Korea.

Cytokine
|June 8, 2023
PubMed
Summary

Engineered extracellular vesicles (EVs) derived from CD8+ T cells show promise for lung cancer treatment. These modified EVs target cancer cells and enhance immune response, offering a novel therapeutic strategy.

Keywords:
CetuximabCytotoxic T cellExtracellular vesiclesInterleukin-2Lung cancer

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Area of Science:

  • Immunology
  • Oncology
  • Biotechnology

Background:

  • Lung cancer remains a significant health challenge with limited conventional therapy response.
  • Current immuno-oncology treatments show suboptimal efficacy in many lung cancer patients.
  • There is a critical need for innovative and effective lung cancer therapeutic strategies.

Purpose of the Study:

  • To develop engineered extracellular vesicles (EVs) from human primary CD8+ T cells for targeted lung cancer therapy.
  • To enhance the direct and immune-mediated antitumor activity of EVs against lung cancer.
  • To investigate the EGFR-dependent targeting specificity of engineered EVs.

Main Methods:

  • Genetic modification of human primary CD8+ T cells to produce engineered EVs.
  • Surface functionalization of EVs with interleukin-2 and anti-EGFR antibody cetuximab.
  • Assessment of direct cytotoxicity of engineered EVs against A549 lung cancer cells.
  • Evaluation of enhanced cancer cell susceptibility to human peripheral blood mononuclear cell-mediated cytotoxicity.
  • Analysis of EGFR-dependent targeting of engineered EVs to lung cancer cells.

Main Results:

  • Engineered EVs demonstrated direct cytotoxicity against A549 human lung cancer cells.
  • The modified EVs increased cancer cell susceptibility to immune cell-mediated killing.
  • Engineered EVs exhibited specific targeting of lung cancer cells in an EGFR-dependent manner.
  • Surface engineering of EVs with cytokines and antibodies enhanced antitumor effects and target specificity.

Conclusions:

  • CD8+ T cell-derived EVs can be engineered to enhance antitumor activity and target specificity for lung cancer.
  • Surface modification of immune cell-derived EVs presents a promising avenue for novel cancer therapeutics.
  • This approach offers a potential strategy to overcome limitations of current lung cancer treatments.