HER2 FISH標本におけるCISH法によるVisualization(可視化)の検討―ヒストラHER2 FISHキット(常光)を用いて
当院ではhuman epidermal growth factor receptor type 2 fluorescence in situ hybridization(HER2 FISH)の蛍光観察を2~4人で行っている。しかし,境界域(equivocal)や判定困難な症例の場合は観察に長時間を要し,励起光の照射による蛍光の褪色が進みシグナルの確認が困難になる場合がある。そこでHER2 FISH施行後のchromogenic in situ hybridization(CISH)法による明視野でのVisualization(可視化)を検討した。検討の結果,(1)カクテル抗体(抗Rhodami...
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| Published in | 医学検査 Vol. 73; no. 4; pp. 708 - 718 |
|---|---|
| Main Authors | , , , |
| Format | Journal Article |
| Language | Japanese |
| Published |
一般社団法人 日本臨床衛生検査技師会
25.10.2024
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| Subjects | |
| Online Access | Get full text |
| ISSN | 0915-8669 2188-5346 |
| DOI | 10.14932/jamt.23-120 |
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| Abstract | 当院ではhuman epidermal growth factor receptor type 2 fluorescence in situ hybridization(HER2 FISH)の蛍光観察を2~4人で行っている。しかし,境界域(equivocal)や判定困難な症例の場合は観察に長時間を要し,励起光の照射による蛍光の褪色が進みシグナルの確認が困難になる場合がある。そこでHER2 FISH施行後のchromogenic in situ hybridization(CISH)法による明視野でのVisualization(可視化)を検討した。検討の結果,(1)カクテル抗体(抗Rhodamine抗体 <×2,000>,抗Fluorescein抗体 <×200>)室温30分,(2)AP標識抗IgGポリクローナル抗体(Histofine Simple Stain AP )室温30分,(3)BCIP/NBT室温1~3分,(4)PO標識モノクローナル抗IgG抗体(Histofine Simple Stain MAX PO )室温30分,(5)AEC室温10分,乾燥後(6)水溶性Aquatex封入,で可視化が可能となった。この方法であれば,褪色や保存スペースの問題点の軽減,標本のデジタル化を含めた臨床医への提供,内部精度管理や教育への利用など,有用性は高いと考える。 |
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| AbstractList | 当院ではhuman epidermal growth factor receptor type 2 fluorescence in situ hybridization(HER2 FISH)の蛍光観察を2~4人で行っている。しかし,境界域(equivocal)や判定困難な症例の場合は観察に長時間を要し,励起光の照射による蛍光の褪色が進みシグナルの確認が困難になる場合がある。そこでHER2 FISH施行後のchromogenic in situ hybridization(CISH)法による明視野でのVisualization(可視化)を検討した。検討の結果,(1)カクテル抗体(抗Rhodamine抗体 <×2,000>,抗Fluorescein抗体 <×200>)室温30分,(2)AP標識抗IgGポリクローナル抗体(Histofine Simple Stain AP )室温30分,(3)BCIP/NBT室温1~3分,(4)PO標識モノクローナル抗IgG抗体(Histofine Simple Stain MAX PO )室温30分,(5)AEC室温10分,乾燥後(6)水溶性Aquatex封入,で可視化が可能となった。この方法であれば,褪色や保存スペースの問題点の軽減,標本のデジタル化を含めた臨床医への提供,内部精度管理や教育への利用など,有用性は高いと考える。 |
| Author | 五十嵐, 久喜 北山, 康彦 井ノ口, 知代 服部, 和哉 |
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| References | 13) Nitta H et al.: Development of automated brightfield double in situ hybridization (BDISH) application for HER2 gene and chromosome 17 centromere (CEN 17) for breast carcinomas and an assay performance comparison to manual dual color HER2 fluorescence in situ hybridization (FISH). Diagn Pathol, 2008; 3: 41. 5) Igarashi H et al.: Simultaneous imaging of membrane antigen and the corresponding chromosomal locus in pathology archives. Pathology International, 2005; 55: 753–756. 2) 財部 テル子,他:乳癌細胞診におけるchromosome in situ hybridization(CISH)法の応用.日臨細胞誌,1988; 37(suppl 1): 245. 6) Kiyose S et al.: Chromogenic in situ hybridization (CISH) to detect HER2 gene amplification in breast and gastric cancer: Comparison with immunohistochemistry (IHC) and fluorescence in situ hybridization (FISH). Pathol Int, 2012; 62: 728–734. 16) Hofmann M et al.: Assessment of a HER2 scoring system for gastric cancer: Results from a validation study. Histopathology, 2008; 52: 797–805. 12) Powell RD et al.: Metallographic in situ hybridization. Hum Pathol, 2007; 38: 1145–1159. 8) Arnould L et al.: Agreement between chromogenic in situ hybridization (CISH) and FISH in the determination of HER2 status in breast cancer. Br J Cancer, 2003; 88: 1587–1591. 14) 田中 京子,他:乳癌におけるDual Color in situ Hybridization法によるHER2遺伝子増幅の検出―FISH法との比較―.医学検査,2014; 63: 453–459. 7) 池田 聡,他:染色体特異プローブを用いたISH法(CISH法)の基礎検討とその応用.第12回日本臨床細胞学会関東連合会誌,1998; 12: 94–95. 3) 池田 聡,他:大腸癌における8番染色体欠失について―染色体特異プローブを用いたISH法(Chromosome in situ hybridization;CISH法)による検討.病理と臨床,1999; 17: 401–402. 1) Arnold N et al.: A sensitive nonradioactive hybridization system based on digoxigenin labeled DNA. 11th European Workshop on Automated Cytogenetics, 1989; 17. 9) García-Caballero T et al.: Determination of HER2 amplification in primary breast cancer using dual-colour chromogenic in situ hybridization is comparable to fluorescence in situ hybridization: A European multicentre study involving 168 specimens. Histopathology, 2010; 56: 472–480. 10) Tubbs R et al.: Novel bright field molecular morphology methods for detection of HER2 gene amplification. J Mol Histol, 2004; 35: 589–594. 11) Downs-kelly E et al.: Analytical validation and interobserver reproducibility of EnzMet GenePro: A second-generation bright-field metallography assay for concomitant detection of HER2 gene status and protein expression in invasive carcinoma of the breast. Am J Surg Pathol, 2005; 29: 1505–1511. 17) Takeuchi K et al.: KIF5B-ALK, a novel fusion oncokinase identified by an immunohistochemistry-based diagnostic system for ALK-positive lung cancer. Clin Cancer Res, 2009; 15: 3143–3149. 4) 五十嵐, 久喜,他:ホルマリン固定パラフィン切片を用いたFISHに対する可視化(Chromosome in situ hybridization;CISH法)の検討.医学検査,2002; 51: 212–215. 15) Starczynski J et al.: HER2 gene amplification in breast cancer: A Rogues’ gallery of challenging diagnostic cases: UKNEQAS interpretation guidelines and research recommendations. Am J Clin Pathol, 2012; 137: 595–605. |
| References_xml | – reference: 10) Tubbs R et al.: Novel bright field molecular morphology methods for detection of HER2 gene amplification. J Mol Histol, 2004; 35: 589–594. – reference: 2) 財部 テル子,他:乳癌細胞診におけるchromosome in situ hybridization(CISH)法の応用.日臨細胞誌,1988; 37(suppl 1): 245. – reference: 1) Arnold N et al.: A sensitive nonradioactive hybridization system based on digoxigenin labeled DNA. 11th European Workshop on Automated Cytogenetics, 1989; 17. – reference: 14) 田中 京子,他:乳癌におけるDual Color in situ Hybridization法によるHER2遺伝子増幅の検出―FISH法との比較―.医学検査,2014; 63: 453–459. – reference: 17) Takeuchi K et al.: KIF5B-ALK, a novel fusion oncokinase identified by an immunohistochemistry-based diagnostic system for ALK-positive lung cancer. Clin Cancer Res, 2009; 15: 3143–3149. – reference: 3) 池田 聡,他:大腸癌における8番染色体欠失について―染色体特異プローブを用いたISH法(Chromosome in situ hybridization;CISH法)による検討.病理と臨床,1999; 17: 401–402. – reference: 7) 池田 聡,他:染色体特異プローブを用いたISH法(CISH法)の基礎検討とその応用.第12回日本臨床細胞学会関東連合会誌,1998; 12: 94–95. – reference: 13) Nitta H et al.: Development of automated brightfield double in situ hybridization (BDISH) application for HER2 gene and chromosome 17 centromere (CEN 17) for breast carcinomas and an assay performance comparison to manual dual color HER2 fluorescence in situ hybridization (FISH). Diagn Pathol, 2008; 3: 41. – reference: 5) Igarashi H et al.: Simultaneous imaging of membrane antigen and the corresponding chromosomal locus in pathology archives. Pathology International, 2005; 55: 753–756. – reference: 15) Starczynski J et al.: HER2 gene amplification in breast cancer: A Rogues’ gallery of challenging diagnostic cases: UKNEQAS interpretation guidelines and research recommendations. Am J Clin Pathol, 2012; 137: 595–605. – reference: 8) Arnould L et al.: Agreement between chromogenic in situ hybridization (CISH) and FISH in the determination of HER2 status in breast cancer. Br J Cancer, 2003; 88: 1587–1591. – reference: 11) Downs-kelly E et al.: Analytical validation and interobserver reproducibility of EnzMet GenePro: A second-generation bright-field metallography assay for concomitant detection of HER2 gene status and protein expression in invasive carcinoma of the breast. Am J Surg Pathol, 2005; 29: 1505–1511. – reference: 4) 五十嵐, 久喜,他:ホルマリン固定パラフィン切片を用いたFISHに対する可視化(Chromosome in situ hybridization;CISH法)の検討.医学検査,2002; 51: 212–215. – reference: 12) Powell RD et al.: Metallographic in situ hybridization. Hum Pathol, 2007; 38: 1145–1159. – reference: 16) Hofmann M et al.: Assessment of a HER2 scoring system for gastric cancer: Results from a validation study. Histopathology, 2008; 52: 797–805. – reference: 6) Kiyose S et al.: Chromogenic in situ hybridization (CISH) to detect HER2 gene amplification in breast and gastric cancer: Comparison with immunohistochemistry (IHC) and fluorescence in situ hybridization (FISH). Pathol Int, 2012; 62: 728–734. – reference: 9) García-Caballero T et al.: Determination of HER2 amplification in primary breast cancer using dual-colour chromogenic in situ hybridization is comparable to fluorescence in situ hybridization: A European multicentre study involving 168 specimens. Histopathology, 2010; 56: 472–480. |
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| Title | HER2 FISH標本におけるCISH法によるVisualization(可視化)の検討―ヒストラHER2 FISHキット(常光)を用いて |
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