JP6224631B2 - Cd3cd4陽性tリンパ球の同定用のエピジェネティックマーカー - Google Patents
Cd3cd4陽性tリンパ球の同定用のエピジェネティックマーカー Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
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- C12Q2600/00—Oligonucleotides characterized by their use
- C12Q2600/154—Methylation markers
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Description
バイオマーカー比=a/b
a=Σ(C及び/又はmC及び/又はhmC及び/又はfC及び/又はcC)
b=Σ(C及び/又はmC及び/又はhmC及び/又はfC及び/又はcC)
ここでa及びbは1種〜4種の修飾が互いに異なる。新規のDNA修飾の発見はこの数(enumeration)を拡大する。
CD4−分析
CD3+/CD4+、CD3+/CD8+ナイーブ及び記憶Tリンパ球、CD56+ナチュラルキラー細胞、CD19+ナイーブ及び記憶B細胞、CD14+単球並びにCD15+顆粒球を含む様々な血液サブセットを精製した。精製した細胞に由来するDNAをバイサルファイト処理して、様々なCpGジヌクレオチドモチーフにおいて分析した。次いで、非バイサルファイト変換性を比較した(元の配列においてメチル化しなかった、ひいてはバイサルファイト変換したシトシンについてTが見られるのに対し、元の配列においてメチル化したシトシンについてCが見られる)。
1255r:(配列番号6)5’−TTCTTACAAAACCAATTTTCCT−3’
1255q:(配列番号7)5’−GGTTTAGGAGGGGTTGTATATT−3’
1999r:(配列番号8)5’−CCCCTCATAAACTTCTTCTAAA−3’
1999q:(配列番号9)5’−TAGTATTAGTGGTGGGAGGAGT−3’
2000r:(配列番号10)5’−ACTATCCCCAATATCCTCTACTT−3’
2000q:(配列番号11)5’−GGGTTAGAGTTTAGGGTTGTT−3’
2001p:(配列番号12)5’−GTGTTAGATAGAGTTTGGGGGT−3’
2001o:(配列番号13)5’−TCTAAAATATACAAAACTAACCCAAT−3’
療法中のがん患者におけるCD4レベルのモニタリング
CD3+及びCD4+T細胞の量並びにCD3+T細胞画分の一部としてのCD4+T細胞のレベルを、配列番号4による単位複製配列2000番中のDNAのバイサルファイト変換性の評価によって定量した(表1)。療法の経過観察中の2つの異なる時点での末梢血液試料を使用した。
Claims (11)
- 哺乳動物に由来する血液細胞を含む試料においてCD4+ヘルパーT細胞を同定する方法であって、配列番号1に示されるCD3+CD4+ヘルパーT細胞特異的なバイサルファイト変換性領域における少なくとも1つのCpG位置のバイサルファイト変換性を分析することを含み、前記試料における少なくとも1つのCpG位置の少なくとも90%のバイサルファイト変換が、CD4+ヘルパーT細胞の指標となり、
前記少なくとも1つのCpG位置が、配列番号2に示される単位複製配列1255番、配列番号3に示される1999番、配列番号4に示される2000番及び配列番号5に示される2001番の群から選択される単位複製配列に存在する、
方法。 - 前記少なくとも1つのCpG位置が、配列番号2に示される単位複製配列1255番の位置26、81、274、335、341及び374、並びに配列番号5に示される単位複製配列2001番の位置45、53、96、125、133、163、205、259、263、345、349及び382から選択される、請求項1に記載の方法。
- メチル化状態の分析が、メチル化特異的酵素消化、バイサルファイトシークエンシングから選択される方法、プロモーターメチル化、CpGアイランドメチル化、MSP又は増幅DNAの検出に基づく他の方法から選択される分析を含む、請求項1又は2に記載の方法。
- CD3及び/若しくはCD8の遺伝子中、又はCD8α及びCD8βの遺伝子中、又はGNGT2の遺伝子中の少なくとも1つのCpG位置のバイサルファイト変換性の分析を更に含む、請求項1〜3のいずれか一項に記載の方法。
- 前記同定が前記Tリンパ球と、全ての主要な末梢血細胞型若しくは非血液細胞又はB細胞とを区別することを含む、請求項1〜4のいずれか一項に記載の方法。
- 前記試料が、ヒト血液試料を含む哺乳動物の体液、又は組織、器官若しくは細胞型の血液試料、血中リンパ球の試料若しくはその画分から選択される、請求項1〜5のいずれか一項に記載の方法。
- 前記哺乳動物がマウス、ラット、サル又はヒトである、請求項1〜6のいずれか一項に記載の方法。
- CD4 T細胞の相対量を、分析される前記領域におけるバイサルファイト変換性の相対量と、GAPDHを含む制御遺伝子におけるバイサルファイト変換性の相対量との比較に基づいて定量する工程を更に含む、請求項1〜7のいずれか一項に記載の方法。
- 前記哺乳動物が自己免疫疾患、移植片拒絶反応、がん及び/又はアレルギーを患っているか、又はそれらを患う可能性がある、請求項1〜8のいずれか一項に記載の方法。
- 哺乳動物においてCD4+ヘルパーT細胞又はCD3+CD4+Tリンパ球のレベルをモニタリングするin vitro方法であって、請求項1〜9のいずれか一項に記載の方法と、同定された全CD3+Tリンパ球の量を、同じ哺乳動物から先に又は同時に採取した試料と比較することとを含む、方法。
- 前記ヘルパーT細胞の量を、前記哺乳動物に与えられた化学物質及び/又は生物学的物質に応じて測定及び/又はモニタリングすることを更に含む、請求項10に記載のin vitro方法。
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PCT/EP2013/053009 WO2013135454A1 (en) | 2012-03-12 | 2013-02-14 | Epigenetic marker for the identification of cd3cd4 positive t lymphocytes |
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WO2018132518A1 (en) * | 2017-01-10 | 2018-07-19 | Juno Therapeutics, Inc. | Epigenetic analysis of cell therapy and related methods |
EP3360971A1 (en) * | 2017-02-09 | 2018-08-15 | Epiontis GmbH | Improved method for epigenetic immune cell counting |
EP3382033B1 (en) * | 2017-03-30 | 2020-08-05 | Rheinisch-Westfälische Technische Hochschule (RWTH) Aachen | Method for determining blood counts based on dna methylation |
DE102017125019B4 (de) * | 2017-10-25 | 2019-10-17 | Epiontis Gmbh | PDCD1 als epigenetischer Marker zur Identifizierung von Immunzellen, insbesondere PD1+ Zellen |
DE102018116353B4 (de) | 2018-07-05 | 2020-06-10 | Epiontis Gmbh | Verfahren zum Nachweis und zur Zählung epigenetischer Immunzellen in humanen Blutproben für Immundiagnostik und Neugeborenen-Screening |
US20230183804A1 (en) | 2018-07-05 | 2023-06-15 | Precision For Medicine Gmbh | Epigenetic method to detect and distinguish ipex and ipex-like syndromes, in particular in newborns |
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