前立腺がんにおけるmiRNA媒介の耐性メカニズム:標的治療と転移性進行への影響
Mostafa M Mostafa1, Mostafa K Abd El-Aziz2, Doha El-Sayed Ellakwa3,4
1Department of Molecular and Cellular Physiology, Stritch School of Medicine, Loyola University Chicago, Chicago, USA.
Medical oncology (Northwood, London, England)
|August 29, 2025
まとめ
このレビューでは,PI3K/AKT活性化およびEMTのようなメカニズムに焦点を当てて,前立腺がんの治療抵抗におけるマイクロRNA (miRNA) の役割を合成しています. miRNAベースの精密腫瘍学の課題と将来の方向性を強調しています.
科学分野:
- 腫瘍学
- 分子生物学
- 遺伝学
背景:
- 前立腺がん (PCa) がカストレーション抵抗性疾患に進行するのは,治療抵抗性によって引き起こされる.
- マイクロRNA (miRNA) はPCaに関与しているが,耐性経路におけるそれらの特定の役割には集中した合成が必要である.
- 既存のレビューは,miRNAの調節不全を広くカバーしており,耐性経路に対するメカニズム中心のアプローチが必要である.
研究 の 目的:
- 標準的なPCa治療 (ADT,エンザルタミド,ドセタキセル,放射線療法) でmiRNA媒介の抵抗メカニズムを合成する.
- 実験的に検証されたmiRNA (例えば,miR-21,miR-34a) と,収束抵抗経路におけるその役割に焦点を当てること.
- miRNAの調節不良と治療の失敗と適応反応を結びつける証拠を批判的に評価する.
主な方法:
- PCaの治療抵抗におけるmiRNA機能のメカニズム中心の合成に焦点を当てた文献レビュー.
- PCaにおける強力な実験的検証によるmiRNAの優先順位付け
- PI3K/AKT活性化,EMT,DNA修復,AR変異シグナル伝達などの主要な抵抗メカニズムにおけるmiRNAの役割の分析.
主要な成果:
- 調節不良のmiRNAは,PI3K/ AKT活性化,EMT,ARシグナル伝達を含むメカニズムを通じて,PCaの生存,幹性,および適応反応を促進する.
- 細胞外膀 (EV) 媒介によるコミュニケーションと低酸素駆動のシグナリングは,重要なマイクロ環境要因として強調されています.
- 循環するmiRNAシグネチャーはバイオマーカーとしての可能性を示していますが,重要な翻訳上の課題に直面しています.
結論:
- PCaの治療薬 (ミミックス,アンタゴミRs) の現在のmiRNAアプリケーションは,臨床検証が限られている.
- 将来の進歩には,将来の試験における厳格な検証と,改善された提供プラットフォーム (例えば,EVベースのシステム) が必要です.
- miRNAプロフィールを臨床データとゲノムデータと統合することは,PCaにおける精度腫瘍学の進歩にとって極めて重要です.
関連する概念動画
Targeted Cancer Therapies
7.8K
The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
There are several types of targeted therapies against...
There are several types of targeted therapies against...
7.8K
Treatment Resistant Cancers
3.4K
Cancer is the second leading cause of death in the United States. A cancer cell is genetically unstable and hence can mutate faster. They can also modify their microenvironment and escape immune surveillance. The difficulties in treating cancer are further compounded by the emergence of rapid resistance to anticancer drugs. The most common ways to attain resistance in cancer cells include alteration in drug transport and metabolism, modification of drug target, elevated DNA damage response, or...
3.4K
MicroRNAs
3.1K
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...
3.1K
Mitogens and the Cell Cycle
6.6K
Mitogens and their receptors play a crucial role in controlling the progression of the cell cycle. However, the loss of mitogenic control over cell division leads to tumor formation. Therefore, mitogens and mitogen receptors play an important role in cancer research. For instance, the epidermal growth factor (EGF) - a type of mitogen and its transmembrane receptor (EGFR), decides the fate of the cell's proliferation. When EGF binds to EGFR, a member of the ErbB family of tyrosine kinase...
6.6K
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...
The mTOR pathway or the...
3.9K
Metastasis
5.7K
Metastasis is the spread of cancer cells from the original site to distant locations in the body. Cancer cells can spread via blood vessels (hematogenous) as well as lymph vessels in the body.
Epithelial-to-Mesenchymal Transition
The epithelial-to-mesenchymal transition or EMT is a developmental process commonly observed in wound healing, embryogenesis, and cancer metastasis. EMT is induced by transforming growth factor-beta (TGF-β) or receptor tyrosine kinase (RTK) ligands, which further...
Epithelial-to-Mesenchymal Transition
The epithelial-to-mesenchymal transition or EMT is a developmental process commonly observed in wound healing, embryogenesis, and cancer metastasis. EMT is induced by transforming growth factor-beta (TGF-β) or receptor tyrosine kinase (RTK) ligands, which further...
5.7K


