Breast cancer diagnosis using a microfluidic multiplexed immunohistochemistry platform.
BACKGROUND: Biomarkers play a key role in risk assessment, assessing treatment response, and detecting recurrence and the investigation of multiple biomarkers may also prove useful in accurate prediction and prognosis of cancers. Immunohistochemistry (IHC) has been a major diagnostic tool to identif...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Public Library of Science (PLoS)
2010-01-01
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| Series: | PLoS ONE |
| Online Access: | http://europepmc.org/articles/PMC2862720?pdf=render |
| _version_ | 1818381411068936192 |
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| author | Minseok S Kim Taemin Kim Sun-Young Kong Soim Kwon Chae Yun Bae Jaekyu Choi Chul Hwan Kim Eun Sook Lee Je-Kyun Park |
| author_facet | Minseok S Kim Taemin Kim Sun-Young Kong Soim Kwon Chae Yun Bae Jaekyu Choi Chul Hwan Kim Eun Sook Lee Je-Kyun Park |
| author_sort | Minseok S Kim |
| collection | DOAJ |
| description | BACKGROUND: Biomarkers play a key role in risk assessment, assessing treatment response, and detecting recurrence and the investigation of multiple biomarkers may also prove useful in accurate prediction and prognosis of cancers. Immunohistochemistry (IHC) has been a major diagnostic tool to identify therapeutic biomarkers and to subclassify breast cancer patients. However, there is no suitable IHC platform for multiplex assay toward personalized cancer therapy. Here, we report a microfluidics-based multiplexed IHC (MMIHC) platform that significantly improves IHC performance in reduction of time and tissue consumption, quantification, consistency, sensitivity, specificity and cost-effectiveness. METHODOLOGY/PRINCIPAL FINDINGS: By creating a simple and robust interface between the device and human breast tissue samples, we not only applied conventional thin-section tissues into on-chip without any additional modification process, but also attained perfect fluid control for various solutions, without any leakage, bubble formation, or cross-contamination. Four biomarkers, estrogen receptor (ER), human epidermal growth factor receptor 2 (HER2), progesterone receptor (PR) and Ki-67, were examined simultaneously on breast cancer cells and human breast cancer tissues. The MMIHC method improved immunoreaction, reducing time and reagent consumption. Moreover, it showed the availability of semi-quantitative analysis by comparing Western blot. Concordance study proved strong consensus between conventional whole-section analysis and MMIHC (n = 105, lowest Kendall's coefficient of concordance, 0.90). To demonstrate the suitability of MMIHC for scarce samples, it was also applied successfully to tissues from needle biopsies. CONCLUSIONS/SIGNIFICANCE: The microfluidic system, for the first time, was successfully applied to human clinical tissue samples and histopathological diagnosis was realized for breast cancers. Our results showing substantial agreement indicate that several cancer-related proteins can be simultaneously investigated on a single tumor section, giving clear advantages and technical advances over standard immunohistochemical method. This novel concept will enable histopathological diagnosis using numerous specific biomarkers at a time even for small-sized specimens, thus facilitating the individualization of cancer therapy. |
| first_indexed | 2024-12-14T02:34:09Z |
| format | Article |
| id | doaj.art-8bc3ba9ffff14d2ab088d0aa66807dc4 |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-14T02:34:09Z |
| publishDate | 2010-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-8bc3ba9ffff14d2ab088d0aa66807dc42022-12-21T23:20:11ZengPublic Library of Science (PLoS)PLoS ONE1932-62032010-01-0155e1044110.1371/journal.pone.0010441Breast cancer diagnosis using a microfluidic multiplexed immunohistochemistry platform.Minseok S KimTaemin KimSun-Young KongSoim KwonChae Yun BaeJaekyu ChoiChul Hwan KimEun Sook LeeJe-Kyun ParkBACKGROUND: Biomarkers play a key role in risk assessment, assessing treatment response, and detecting recurrence and the investigation of multiple biomarkers may also prove useful in accurate prediction and prognosis of cancers. Immunohistochemistry (IHC) has been a major diagnostic tool to identify therapeutic biomarkers and to subclassify breast cancer patients. However, there is no suitable IHC platform for multiplex assay toward personalized cancer therapy. Here, we report a microfluidics-based multiplexed IHC (MMIHC) platform that significantly improves IHC performance in reduction of time and tissue consumption, quantification, consistency, sensitivity, specificity and cost-effectiveness. METHODOLOGY/PRINCIPAL FINDINGS: By creating a simple and robust interface between the device and human breast tissue samples, we not only applied conventional thin-section tissues into on-chip without any additional modification process, but also attained perfect fluid control for various solutions, without any leakage, bubble formation, or cross-contamination. Four biomarkers, estrogen receptor (ER), human epidermal growth factor receptor 2 (HER2), progesterone receptor (PR) and Ki-67, were examined simultaneously on breast cancer cells and human breast cancer tissues. The MMIHC method improved immunoreaction, reducing time and reagent consumption. Moreover, it showed the availability of semi-quantitative analysis by comparing Western blot. Concordance study proved strong consensus between conventional whole-section analysis and MMIHC (n = 105, lowest Kendall's coefficient of concordance, 0.90). To demonstrate the suitability of MMIHC for scarce samples, it was also applied successfully to tissues from needle biopsies. CONCLUSIONS/SIGNIFICANCE: The microfluidic system, for the first time, was successfully applied to human clinical tissue samples and histopathological diagnosis was realized for breast cancers. Our results showing substantial agreement indicate that several cancer-related proteins can be simultaneously investigated on a single tumor section, giving clear advantages and technical advances over standard immunohistochemical method. This novel concept will enable histopathological diagnosis using numerous specific biomarkers at a time even for small-sized specimens, thus facilitating the individualization of cancer therapy.http://europepmc.org/articles/PMC2862720?pdf=render |
| spellingShingle | Minseok S Kim Taemin Kim Sun-Young Kong Soim Kwon Chae Yun Bae Jaekyu Choi Chul Hwan Kim Eun Sook Lee Je-Kyun Park Breast cancer diagnosis using a microfluidic multiplexed immunohistochemistry platform. PLoS ONE |
| title | Breast cancer diagnosis using a microfluidic multiplexed immunohistochemistry platform. |
| title_full | Breast cancer diagnosis using a microfluidic multiplexed immunohistochemistry platform. |
| title_fullStr | Breast cancer diagnosis using a microfluidic multiplexed immunohistochemistry platform. |
| title_full_unstemmed | Breast cancer diagnosis using a microfluidic multiplexed immunohistochemistry platform. |
| title_short | Breast cancer diagnosis using a microfluidic multiplexed immunohistochemistry platform. |
| title_sort | breast cancer diagnosis using a microfluidic multiplexed immunohistochemistry platform |
| url | http://europepmc.org/articles/PMC2862720?pdf=render |
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