ONECUT1はPSAT1を活性化し,PD- L1の発現を促進し,肺状細胞癌の免疫回避を媒介する

Xiaoyan Huang¹, Jingwei Yan¹, Shucong Peng¹

¹Department of Thoracic Surgery, Guangxi Academy of Medical Sciences and the People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530016, China.

Tissue & cell

|September 4, 2025

まとめ

ONECUT1はPSAT1を活性化し,PD- L1を増加させ,肺状細胞癌の免疫回避を促進する. この発見により肺がんの新たな治療目標が生まれました

科学分野:

腫瘍学
免疫学
分子生物学

背景:

肺状細胞癌 (LUSC) は,PD- 1/ PD- L1治療に限られた反応を示しています.
LUSCの進行メカニズムを理解することは効果的な治療法の開発に不可欠です.

研究の目的:

LUSCにおけるPSAT1とONECUT1の役割を調査する.
PSAT1,CD8+ T細胞の浸透とPD-L1発現の関係を決定する.
LUSCにおけるONECUT1によるPSAT1の制御メカニズムを解明する.

主な方法:

TCGAデータベースを用いた差異的遺伝子発現分析
関連分析,qPCR,IHC,MTT,WB,アネキシンV-FITC,CFSE,ELISA,トランスウェル検査
CHIPと二重ルシフェラーゼ測定法で,ONECUT1-PSAT1結合を確認する.

主要な成果:

LUSCでは,PSAT1が過剰発現し,予後が悪いことと,CD8+ T細胞の浸透が低下することと相関する.
PSAT1のノックダウンにより,LUSC細胞の生存能力,PD- L1の発現,アポトーシスおよびCD8+T細胞の活性が低下しました.
ONECUT1はLUSCでも過剰発現し,PSAT1転写を直接結合して活性化します.

結論:

ONECUT1は,PSAT1を転写的に活性化し,PD- L1によるLUSC免疫回避に貢献する.
このONECUT1- PSAT1軸は,LUSCの潜在的な治療目標を表しています.

キーワード:

免疫回避肺状細胞がん ONECUT1 について PD-L1 について PSAT1 について

さらに関連する動画

10:21

Author Spotlight: Exploring the Role of Inflammation in the Co-occurrence of Primary Sjogren's Syndrome and Lung Adenocarcinoma

Published on: September 20, 2024

540

03:36

Development of Compendium for Esophageal Squamous Cell Carcinoma

Published on: April 12, 2024

528

関連する概念動画

02:23

Abnormal Proliferation

4.6K

Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the...

4.6K

03:03

mTOR Signaling and Cancer Progression

3.9K

The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...

3.9K

01:19

Interactions Between Signaling Pathways

6.4K

Signaling cascades usually lack linearity. Multiple pathways interact and regulate one another, allowing cells to integrate and respond to diverse environmental stimuli.
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...

6.4K

01:45

Regulation of Nuclear Protein Sorting

2.4K

Nuclear protein sorting regulates nucleus composition and gene expression, crucial for determining the fate of a eukaryotic cell. Hence, the entry and exit of molecules across the nuclear envelope is a tightly controlled process. Nuclear protein sorting can be inhibited by one of the following ways: 1) masking cargo signal sequences, 2) modifying the nuclear receptor's affinity for cargo, 3) controlling the nuclear pore size, 4) retaining the cargo during its transit to the cytosol or the...