JP2022547098A - 新規マイクロペプチドhmmwとその適用 - Google Patents
新規マイクロペプチドhmmwとその適用 Download PDFInfo
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Abstract
Description
(a1)腫瘍成長を抑制するため。
(a2)腫瘍細胞の増殖を抑制するため。
(a3)腫瘍細胞の浸潤を抑制するため。
(a4)腫瘍細胞の遊走を抑制するため。
次は、本発明について特定の実施例を参照して詳しく説明する。
本実施例では、HMMWマイクロペプチドのコーディング能力を検出する。
本実施例では、マイクロペプチドHMMW I-IXが固相合成法によって得られ、得られたマイクロペプチドHMMWI-IXをチェックする。
適量のFmoc-wang-resinまたはFmoc-CTC-resinを量り、ガラスサンドコア反応カラムに注ぎ、適量のCH2Cl2を加えて樹脂を完全に膨張させる。
完全に吸出された樹脂を丸底フラスコに入れ、切断溶液で完全に溶解された36ペプチド中間体を加え、サンドコアファンネルにより樹脂をポリペプチドと分離させ、前記切断溶液の成分と各成分の体積組成は、トリフルオロ酢酸:フェノール:水:チオアニソール:EDT = 90:3:3:2:2となっている。
最初に無水エーテルを切断溶液に加えてポリペプチドを分離させた後、遠心分離により、上清を捨てて、またポリペプチドを無水エーテルで洗浄し、完全に吸出してからポリペプチドの粗生成物を得る。
a. 溶解:粗生成物を量って5~20g/Lの溶液を調製し、孔径0.45μmの混合フィルターメンブレンでろ過する。
凍結乾燥後の精製された製品を収集し、ポリペプチドの純度を分析用RP-HPLCにより検出する。分析条件は、移動相:ACN(+0.1%TFA)、H2O(+0.1%TFA);アセトニトリル線形勾配:10%-100%;流速:1mL/min;運転時間:20 min;サンプルローディングボリューム: 20μL;検出波長:220nmとなっている。
本実施例では、ヒト腫瘍細胞の増殖能力に対するマイクロペプチドHMMWI-IXの影響を検出する。
ヒト腫瘍細胞の遊走能力に対するマイクロペプチドHMMW I-IXの影響
ヒト頭頸部癌SCC4細胞、甲状腺癌SW579細胞、肺癌A549細胞、食道扁平上皮癌TE13細胞、胃癌MGC803細胞、乳癌MDA-MB-231細胞、腎癌UOK262細胞、皮膚癌A431細胞をtranswellチャンバーに接種し、ウェルあたり100μL、また異なる用量のマイクロペプチドHMMWI-IXを各チャンバーに加える。次に、10%FBSを含む0.6 mLの完全培地をtranswellの下部チャンバーに加えて細胞の遊走を刺激し、5%CO2、37℃で24時間培養する。ウェル内の培地を捨て、90%アルコールで室温下に30分間固定させ、0.1%クリスタルバイオレットで室温下に10分間染色し、きれいな水ですすぎ、上層の遊走していない細胞を綿棒でそっと拭き取り、顕微鏡で観察し、4つの視野を選択して写真を撮りカウントする。次の式に従って、細胞の遊走抑制率(migration inhibition rate,MIR)を算出する。
ヒト腫瘍細胞の浸潤能力に対するマイクロペプチドHMMW I-IXの影響。
10 mg/mL Matrigelを培地で1:3に希釈し、transwellチャンバーメンブレンに塗布し、室温下に風乾させる。対数成長期まで培養されたヒト頭頸部癌SCC4細胞、甲状腺癌SW579細胞、肺癌A549細胞、食道扁平上皮癌TE13細胞、胃癌MGC803細胞、乳癌MDA-MB-231細胞、腎癌UOK262細胞、皮膚癌A431細胞をトリプシンにより消化、収集し、PBSで2回洗浄してから、ブランク培地で再懸濁させる。細胞濃度を1×105細胞/ mLに調整する。細胞をtranswellチャンバーに1ウェルあたり100μLで接種しながら、異なる用量のマイクロペプチドHMMW I-IXを各チャンバーに加える。transwellの下部チャンバーに、10%FBSを含む0.6 mLの完全培地を加えて細胞の浸潤を刺激し、5%CO2、37℃で24時間培養する。ウェル内の培地を捨て、90%アルコールで室温下に30分間固定させ、0.1%クリスタルバイオレットで室温下に10分間染色し、きれいな水ですすぎ、上層の浸潤していない細胞を綿棒でそっと拭き取り、顕微鏡で観察し、4つの視野を選択して写真を撮りカウントする。次の式に従って、浸潤抑制率(Invasion inhibition rate,IIR)を算出する。
インビボでのヒト腫瘍細胞の成長に対するマイクロペプチドHMMWの影響。
(1) ヒト頭頸部癌SCC4細胞、甲状腺癌SW579細胞、肺癌A549細胞、食道扁平上皮癌TE13細胞、胃癌MGC803細胞、乳癌MDA-MB-231細胞、腎臓癌UOK262細胞を大量に培養し、0.25%トリプシン溶液によって消化し、消化終了後に、細胞懸濁液を1000rpmで5分間遠心分離し、細胞を無血清DMEM培地に再懸濁させてからカウントし、細胞濃度を5×107細胞/mlに調整する。
腫瘍体積= 0.5×a×b ^ 2
ここで、aは移植腫瘍の長さ(mm)、bは移植腫瘍の幅(mm)となっている。
インビボでのヒト腫瘍細胞の成長に対するマイクロペプチドHMMW I-IXの影響。
(1) ヒト頭頸部癌SCC4細胞、甲状腺癌SW579細胞、肺癌A549細胞、食道扁平上皮癌TE13細胞、胃癌MGC803細胞、乳癌MDA-MB-231細胞、腎臓癌UOK262細胞を大量に培養し、0.25%トリプシン溶液によって消化し、消化終了後に、細胞懸濁液を1000rpmで5分間遠心分離し、細胞を無血清DMEM培地に再懸濁させてからカウントし、細胞濃度を5×107細胞/mlに調整する。
腫瘍体積= 0.5×a×b ^ 2
ここで、aは移植腫瘍の長さ(mm)、bは移植腫瘍の幅(mm)となっている。
腫瘍患者および正常な傍癌性組織におけるHMMWの発現。
TCGA標準法により頭頸部癌、脳神経膠腫、甲状腺癌、食道扁平上皮癌、肺癌、肝臓癌、胃癌、腎癌、乳癌、卵巣癌、子宮頸癌、膀胱癌、結腸直腸癌、膵臓癌、骨肉腫、皮膚癌を含む16種類の腫瘍の癌組織と正常組織のRNA-seqシーケンスファイルと臨床情報をダウンロードし、マイクロペプチドHMMWの差次的発現(判断基準:(1) |癌/傍癌の発現量|>2、(2) P<0.05)を分析する。
頭頸部癌の臨床患者および正常な傍癌性組織におけるHMMWの発現。
(1) 標本の収集
患者のインフォームドコンセントを得て、手術中に頭頸部癌および傍癌性組織の標本を収集し、生理食塩水で洗浄した後、将来の使用のために液体窒素または-80℃の冷蔵庫に保管する。
上流プライマー(SEQ ID NO. 3に示される配列)
下流プライマー(SEQ ID NO. 4に示される配列)
Claims (10)
- マイクロペプチドHMMWのアミノ酸配列は、SEQ ID NO. 1の通りのアミノ酸配列と少なくとも85%の相同性を有するアミノ酸配列となっていることを特徴とする腫瘍検出試薬または腫瘍治療薬の調製における前記新規マイクロペプチドHMMWの適用。
- マイクロペプチドHMMWのアミノ酸配列がSEQ ID NO. 1の通りのアミノ酸配列を含むことを特徴とする請求項1に記載の腫瘍検出試薬または腫瘍治療薬の調製における前記新規マイクロペプチドHMMWの適用。
- 新規マイクロペプチドHMMWがSEQ ID NO. 1~NO. 9の通りのアミノ酸配列のいずれか1つとなっていることを特徴とする請求項1に記載の腫瘍検出試薬または腫瘍治療薬の調製における前記新規マイクロペプチドHMMWの適用。
- ヌクレオチドは(a)または(b)または(c)のいずれか1つとなっていることを特徴とする前記ヌクレオチド。
(a) SEQ ID NO. 2を含む前記アミノ酸配列をコードするヌクレオチド配列。
(b) 請求項2に記載のマイクロペプチドHMMWをコードするヌクレオチド。
(c) 請求項3に記載のアミノ酸をコードするヌクレオチド配列、具体的にはSEQ ID NO. 10~NO. 18の通りのヌクレオチド配列で、NはA/T/G/Cのいずれかとなっている。 - 組換えベクターは請求項4に記載のヌクレオチドを含むことを特徴とする前記組換えベクター。
- 腫瘍検出試薬または腫瘍治療薬の調製における、請求項4に記載のヌクレオチドまたは請求項5に記載の組換えベクターの適用。
- 試薬テストキットは、請求項4に記載のヌクレオチド配列によって設計された特異性プライマーペアを含むことを特徴とする前記腫瘍検出用試薬テストキット。
- 特異性プライマーペアがSEQ ID NO. 19およびSEQ ID NO. 20の通りとなっていることを特徴とする請求項7に記載の前記腫瘍検出用試薬テストキット。
- 腫瘍が、ヒト頭頸部癌、甲状腺癌、肺癌、食道扁平上皮癌、胃癌、乳癌、腎癌、および皮膚癌を含むことを特徴とする請求項7に記載の前記腫瘍検出用試薬テストキット。
- 医薬組成物は、少なくともSEQ ID NO. 1のアミノ酸配列を含むマイクロペプチドHMMW、または請求項4に記載のヌクレオチド、または請求項5に記載の組換えベクターを含むことを特徴とする腫瘍治療のための前記医薬組成物。
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EP4006048A4 (en) | 2024-03-06 |
US20220340623A1 (en) | 2022-10-27 |
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