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関連する概念動画

What is Genetic Engineering?00:49

What is Genetic Engineering?

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Overview
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Heat Engines01:10

Heat Engines

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A heat engine is a device used to extract heat from a source and then convert it into mechanical work used for various applications. For example, a steam engine on an old-style train can produce the work needed for driving the train.
Whenever we consider heat engines (and associated devices such as refrigerators and heat pumps), we do not use the standard sign convention for heat and work. For convenience, we assume that the symbols Qh, Qc, and W represent only the amounts of heat transferred...
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Combining Functions01:16

Combining Functions

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Functions can be combined to form new mathematical models that describe interactions between variables. These combinations are fundamental in understanding relationships between changing quantities and are commonly encountered in scientific and engineering contexts. The combination methods—addition, subtraction, multiplication, division, and composition—each have unique implications for the resulting function’s domain and behavior.When combining functions through arithmetic...
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Impedance Combination01:21

Impedance Combination

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Consider a string of christmas lights, each bulb symbolizing an impedance element. In this series configuration, the flow of electric current remains uniform across every component. This behavior aligns with Kirchhoff's Voltage Law (KVL), which asserts that the total impedance in such a setup equals the sum of individual impedances—akin to resistors in series. It follows that the voltage from the power source is distributed proportionally among these components, adhering to the voltage...
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Combination Of Resistors01:18

Combination Of Resistors

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Electrical devices in any circuit can be connected either by series or parallel connections. Additionally, circuits can be connected involving both of these connections, known as combination or complex circuits. As these circuits have complex resistor connections, it is necessary to identify different parts as either series or parallel connections, then the whole combination of series and parallel resistors can be reduced to a single equivalent resistance. With the known equivalent resistance...
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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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Novel Production Protocol for Small-scale Manufacture of Probiotic Fermented Foods
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腫瘍を標的とした組み合わせの化学免疫療法のためのエンジニアリングされたプロバイオティクス.

Zaofeng Yang, Jongwon Im, Noah Chen

    bioRxiv : the preprint server for biology
    |February 12, 2026
    PubMed
    まとめ

    エンジニアリングされたバクテリアは,化学免疫療法を直接腫瘍に届けます. この新しいプラットフォームは,前薬をがん薬に変換し,免疫システムを強化し,強力な抗腫瘍効果を示します.

    科学分野:

    • 腫瘍学 腫瘍学
    • 微生物学 微生物学とは
    • 免疫学 免疫学とは

    背景:

    • 化学免疫療法は,腫瘍特異的な投与と持続的な薬剤活性化において課題に直面しています.
    • 統合された治療戦略の開発は,効果的ながん治療に不可欠です.

    研究 の 目的:

    • 強化されたがん治療のための免疫療法と酵素/前薬化学療法を組み合わせた細菌プラットフォームを設計する.
    • この統合された細菌システムの有効性とメカニズムを,ネズミの固体腫瘍モデルで評価する.

    主な方法:

    • 設計された *E. coli* Nissle 1917 は, 5-フッ素酸化塩素を 5-フッ素酸化塩素に変換するためのサイトシンデアミナーゼを表現します.
    • 組み込みのIL-15スーパーアゴニストとPD-L1は,バクテリアのプラットフォーム内のナノボディの生産をブロックします.
    • MC38固体腫瘍モデルで抗腫瘍効果と免疫細胞活性化を評価した.

    主要な成果:

    • バクテリアのプラットフォームは,前臨床モデルにおいて強力な抗腫瘍活性を示した.
    • 機構学的研究により,抗原を提示する細胞,T細胞,自然殺虫細胞の活性化が強化されたことが明らかになった.
    • この治療は,腫瘍のマイクロ環境内の免疫抑制性細胞集団を効果的に減少させました.

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    結論:

    • 統合された細菌システムは,酵素/前薬化学療法と免疫療法を成功裏に組み合わせています.
    • このアプローチは,従来の治療法の限界を克服し,がん治療のシナージー効果のためのスケーラブルで正確な戦略を提供します.
    • エンジニアリングプラットフォームは,がん治療の安全性プロファイルを向上させました.