mRNAディスプレイライブラリの翻訳後のサイクリングのための一般的な経路
Steven W Millward1, Terry T Takahashi, Richard W Roberts
1Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125, USA.
Journal of the American Chemical Society
|October 13, 2005
まとめ
研究者らは,制限された分子治療法を設計するために,高多様性,共振的にサイクルされたmRNAディスプレイライブラリを開発しました. この新しい方法は,二硫化物結合の限界を克服し,循環反応の定量分析を可能にします.
科学分野:
- 薬用化学 薬用化学について
- バイオテクノロジー バイオテクノロジー
- 分子生物学は分子生物学である.
背景:
- 周期性ペプチドは,形状的に制約された分子療法のための安定した支架を提供します.
- 以前の生物学的ディスプレイライブラリでは,細胞内環境では不安定な二硫化物結合をサイクルに利用していました.
研究 の 目的:
- 高多様性,共振的にサイクリングされたmRNAディスプレイライブラリを構築するために.
- サイクリング反応とその効率を分析する.
- 制約された分子療法の設計に広く適用可能な方法を提供すること.
主な方法:
- >10^13の配列を持つmRNAディスプレイライブラリの構築.
- MALDI-TOF MS (マトリックス・アシスタント・レーザー・デソルプション/イオニゼーション・タイム・オブ・フライト・マス・スペクトロメトリー) を使用したサイクライゼーションの分析.
- サイクリングを評価するために非自然なアミノ酸を組み込む.
主要な成果:
- 高多様性,共振的にサイクリングされたmRNAディスプレイライブラリの建設に成功しました.
- サイクライゼーション反応効率の定量評価.
- さまざまなサイクル化化学に対する広範な適用性の実証.
結論:
- ovalently cyclized mRNAディスプレイライブラリは,分子療法の設計における重要な進歩を表しています.
- 開発された方法は,サイクル化の堅実で定量的な評価を可能にします.
- このアプローチは,形状的に制約されたペプチドベースの医薬品を作成するためのツールキットを拡張します.
関連する概念動画
01:31Translation
Lesson: Translation
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
Translation Produces the Building Blocks of Life
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
Translation Produces the Building Blocks of Life
02:33Initiation of Translation
Initiating translation is complex because it involves multiple molecules. Initiator tRNA, ribosomal subunits, and eukaryotic initiation factors (eIFs) are all required to assemble on the initiation codon of mRNA. This process consists of several steps that are mediated by different eIFs.
First, the initiator tRNA must be selected from the pool of elongator tRNAs by eukaryotic initiation factor 2 (eIF2). The initiator tRNA (Met-tRNAi) has conserved sequence elements including modified bases at...
First, the initiator tRNA must be selected from the pool of elongator tRNAs by eukaryotic initiation factor 2 (eIF2). The initiator tRNA (Met-tRNAi) has conserved sequence elements including modified bases at...
02:22Regulated mRNA Transport
In eukaryotes, transcription and translation are compartmentalized; an mRNA is first synthesized in the nucleus and then selectively transported to the cytoplasm for protein synthesis. Before transport, a pre-mRNA undergoes several steps of post-transcriptional modifications including splicing, 5' capping, and the addition of a poly-adenine tail. Various proteins bind to the pre-mRNA during these modifications. The mRNA transport takes place with the help of multiple proteins playing specific...
01:31Translation
Lesson: Translation
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
Translation Produces the Building Blocks of Life
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
Translation Produces the Building Blocks of Life
02:22Regulated mRNA Transport
In eukaryotes, transcription and translation are compartmentalized; an mRNA is first synthesized in the nucleus and then selectively transported to the cytoplasm for protein synthesis. Before transport, a pre-mRNA undergoes several steps of post-transcriptional modifications including splicing, 5' capping, and the addition of a poly-adenine tail. Various proteins bind to the pre-mRNA during these modifications. The mRNA transport takes place with the help of multiple proteins playing specific...
01:29Translation in Prokaryotes
Prokaryote translation is a complex, highly coordinated process that converts genetic information from mRNA into functional proteins. It involves three stages: initiation, elongation, and termination, each facilitated by specific molecular components.Initiation of TranslationThe process begins with the assembly of the ribosomal subunits and initiation factors on the mRNA. In bacteria, the 30S ribosomal subunit recognizes the Shine-Dalgarno sequence in the mRNA, a conserved region upstream of...