+
データを開く
-
基本情報
登録情報 | データベース: PDB / ID: 9moe | ||||||
---|---|---|---|---|---|---|---|
タイトル | Preclinical and clinical evaluation of a novel TRPA1 antagonist LY3526318 | ||||||
![]() | Transient receptor potential cation channel subfamily A member 1 | ||||||
![]() | MEMBRANE PROTEIN / Pain receptor / TrpA1 / ion channel / ligand gating | ||||||
機能・相同性 | ![]() cellular response to food / temperature-gated cation channel activity / stereocilium bundle / detection of chemical stimulus involved in sensory perception of pain / thermoception / TRP channels / response to pain / intracellularly gated calcium channel activity / detection of mechanical stimulus involved in sensory perception of pain / monoatomic ion transport ...cellular response to food / temperature-gated cation channel activity / stereocilium bundle / detection of chemical stimulus involved in sensory perception of pain / thermoception / TRP channels / response to pain / intracellularly gated calcium channel activity / detection of mechanical stimulus involved in sensory perception of pain / monoatomic ion transport / sensory perception of pain / response to cold / calcium ion transmembrane transport / calcium channel activity / cellular response to hydrogen peroxide / intracellular calcium ion homeostasis / channel activity / protein homotetramerization / cell surface receptor signaling pathway / response to xenobiotic stimulus / identical protein binding / plasma membrane 類似検索 - 分子機能 | ||||||
生物種 | ![]() | ||||||
手法 | 電子顕微鏡法 / 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 2.7 Å | ||||||
![]() | Nie, S. | ||||||
資金援助 | 1件
| ||||||
![]() | ![]() タイトル: Preclinical and clinical evaluation of a novel TRPA1 antagonist LY3526318. 著者: Lisa M Broad / Jeffrey G Suico / P Kellie Turner / Si Nie / Kirk W Johnson / Helen E Sanger / Lindsay A Wegiel / David C Sperry / David Remick / Magdalene Moran / Sam Malekiani / Donato Del ...著者: Lisa M Broad / Jeffrey G Suico / P Kellie Turner / Si Nie / Kirk W Johnson / Helen E Sanger / Lindsay A Wegiel / David C Sperry / David Remick / Magdalene Moran / Sam Malekiani / Donato Del Camino / Xinyuan Wu / Jayhong A Chong / Nathaniel T Blair / August V Wilke / ![]() ![]() 要旨: The transient receptor potential cation channel member A1 (TRPA1) is heavily implicated in nociceptive signaling in both physiological and pathological pain states. However, it has been challenging ...The transient receptor potential cation channel member A1 (TRPA1) is heavily implicated in nociceptive signaling in both physiological and pathological pain states. However, it has been challenging to develop TRPA1 antagonists with appropriate properties to advance into clinical development. Herein, we describe the preclinical characterization and early clinical development of LY3526318, a potent, selective, and orally bioavailable TRPA1 antagonist. In vitro studies showed that LY3526318 reversibly inhibited recombinant TRPA1 channels with nanomolar potency that was conserved across species. LY3526318 also inhibited the function of native human and rat TRPA1 channels, including nociceptive dorsal root ganglion neuronal TRPA1 channels. In vivo studies showed that LY3526318 blocked formalin-evoked flinching behaviors and chronic Freund adjuvant-induced cold hypersensitivity in rats. Only male rats were used in these studies. Initial phase 1, single- and multiple-ascending dose studies evaluating pharmacokinetic and safety parameters of LY3526318 revealed a suboptimal pharmacokinetic profile leading to the development and study of a spray-dried dispersion (SDD) formulation of LY3526318. When dosed once daily at 250 mg, LY3526318-SDD showed a tmax of 4 hours and t1/2 of 12 hours, maintaining plasma exposures demonstrated to engage the TRPA1 target. Adverse events were transient and mild across all phase 1 studies. In summary, LY3526318 blocked TRPA1 in vitro and in vivo, inhibited behavioral signs of enhanced nociception in animal models, and was safe and well tolerated in phase 1 clinical studies, with LY3526318-SDD displaying an appropriate pharmacokinetic profile to advance to proof-of-concept studies in patients with chronic pain. | ||||||
履歴 |
|
-
構造の表示
構造ビューア | 分子: ![]() ![]() |
---|
-
ダウンロードとリンク
-
ダウンロード
PDBx/mmCIF形式 | ![]() | 578 KB | 表示 | ![]() |
---|---|---|---|---|
PDB形式 | ![]() | 表示 | ![]() | |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
文書・要旨 | ![]() | 1.4 MB | 表示 | ![]() |
---|---|---|---|---|
文書・詳細版 | ![]() | 1.4 MB | 表示 | |
XML形式データ | ![]() | 62.7 KB | 表示 | |
CIF形式データ | ![]() | 96.9 KB | 表示 | |
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-関連構造データ
関連構造データ | ![]() 48457MC M: このデータのモデリングに利用したマップデータ C: 同じ文献を引用 ( |
---|---|
類似構造データ | 類似検索 - 機能・相同性 ![]() |
-
リンク
-
集合体
登録構造単位 | ![]()
|
---|---|
1 |
|
-
要素
#1: タンパク質 | 分子量: 127699.586 Da / 分子数: 4 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() #2: 化合物 | ChemComp-A1BNO / ( 分子量: 556.457 Da / 分子数: 4 / 由来タイプ: 合成 / 式: C23H19F3N10O4 / タイプ: SUBJECT OF INVESTIGATION 研究の焦点であるリガンドがあるか | Y | Has protein modification | N | |
---|
-実験情報
-実験
実験 | 手法: 電子顕微鏡法 |
---|---|
EM実験 | 試料の集合状態: PARTICLE / 3次元再構成法: 単粒子再構成法 |
-
試料調製
構成要素 | 名称: tetrameric ion channel TrpA1 / タイプ: COMPLEX / Entity ID: #1 / 由来: RECOMBINANT |
---|---|
分子量 | 値: 0.684 MDa / 実験値: NO |
由来(天然) | 生物種: ![]() |
由来(組換発現) | 生物種: ![]() |
緩衝液 | pH: 8 詳細: 20 mM HEPES, pH 8, 150 mM NaCl, 0.5 mM TCEP and 0.01% LMNG |
試料 | 濃度: 2 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
試料支持 | グリッドの材料: GOLD / グリッドのサイズ: 300 divisions/in. / グリッドのタイプ: UltrAuFoil R1.2/1.3 |
急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 100 % / 凍結前の試料温度: 277 K |
-
電子顕微鏡撮影
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
---|---|
顕微鏡 | モデル: TFS KRIOS |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 1800 nm / 最小 デフォーカス(公称値): 600 nm / C2レンズ絞り径: 70 µm |
撮影 | 電子線照射量: 18 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) |
-
解析
CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
3次元再構成 | 解像度: 2.7 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 200000 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
精密化 | 交差検証法: NONE 立体化学のターゲット値: GeoStd + Monomer Library + CDL v1.2 | ||||||||||||||||||||||||
原子変位パラメータ | Biso mean: 39.53 Å2 | ||||||||||||||||||||||||
拘束条件 |
|