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Akhlaghipour I, Moghbeli M. MicroRNA-98 as a novel diagnostic marker and therapeutic target in cancer patients. Discov Oncol 2024; 15:385. [PMID: 39210158 PMCID: PMC11362465 DOI: 10.1007/s12672-024-01270-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Accepted: 08/23/2024] [Indexed: 09/04/2024] Open
Abstract
The progress of cancer treatment methods in the last decade has significantly reduced mortality rate among these patients. Nevertheless, cancer is still recognized as one of the main causes of human deaths. One of the main reasons for the high death rate in cancer patients is the late diagnosis in the advanced tumor stages. Therefore, it is necessary to investigate the molecular biology of tumor progressions in order to introduce early diagnostic markers. MicroRNAs (miRNAs) have an important role in regulating cellular processes associated with tumor progression. Due to the high stability of miRNAs in body fluids, they are widely used as non-invasive markers in the early tumor diagnosis. Since, deregulation of miR-98 has been reported in a wide range of cancers, we investigated the molecular mechanisms of miR-98 during tumor progression. It has been reported that miR-98 mainly inhibits the tumor growth by the modulation of transcription factors and signaling pathways. Therefore, miR-98 can be introduced as a tumor marker and therapeutic target among cancer patients.
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Affiliation(s)
- Iman Akhlaghipour
- Student Research Committee, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Meysam Moghbeli
- Department of Medical Genetics and Molecular Medicine, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
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2
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NOYAN S, GÜR DEDEOĞLU B. miR-770-5p-induced cellular switch to sensitize trastuzumab resistant breast cancer cells targeting HER2/EGFR/IGF1R bidirectional crosstalk. Turk J Biol 2024; 48:153-162. [PMID: 39051060 PMCID: PMC11265924 DOI: 10.55730/1300-0152.2690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 04/26/2024] [Accepted: 02/05/2024] [Indexed: 07/27/2024] Open
Abstract
Background/aim Studies highlighted the bidirectional crosstalk between the HER family members in breast cancer as resistance mechanism to anti-HER agents. Cross-signaling between HER2/EGFR and ER/IGF1R could play role in the development of resistance to therapeutics hence stimulating cell growth. To overcome this resistance, combined therapies targeting both pathways simultaneously have been proposed as an effective strategy. The involvement of miRNAs in resistance of targeted therapies like trastuzumab was demonstrated in recent studies. Hence the regulation of miRNAs in resistance state could reverse the cell behaviour to drugs. Previously we found that overexpression of miR-770-5p downregulated AKT and ERK expression through HER2 signaling and potentiated the effect of trastuzumab. In this study we examined the impact of miR-770-5p on trastuzumab resistance. Materials and methods Cells were treated with tamoxifen or trastuzumab to examine their role in bidirectional crosstalk. The molecule mechanism of miR-770-5p on HER2/EGFR/IGF1R bidirectional crosstalk was explored by western blot. The expression of miR-770-5p in trastuzumab resistant cells was examined by q-PCR. To investigate the effect of miR-770-5p on cancer cell proliferation in trastuzumab resistance state, resistant cells were analyzed by iCELLigence real-time cell analyzer. Results miR-770-5p expression was significantly downregulated in trastuzumab-resistant BT-474 and SK-BR-3 cells. Overexpression of miR-770-5p sensitized the resistant cells to trastuzumab, as evidenced by reduced cell proliferation and increased cell viability. Additionally, in resistant cells, increased expression and activation of EGFR and IGF1R were observed. However, miR-770-5p overexpression resulted in decreased phosphorylation of AKT and ERK, indicating its suppressive role in EGFR/HER2 signaling. Furthermore, miR-770-5p downregulated the expression of IGF1R and mTOR, suggesting its involvement in regulating the escape signaling mediated by IGF1R in resistance. Conclusion In conclusion, our findings demonstrate the critical role of miR-770-5p in regulating bidirectional crosstalk and overcoming trastuzumab resistance in breast cancer cells. These results highlight the potential of miR-770-5p as a therapeutic target to improve the efficacy of targeted therapies and address resistance mechanisms in breast cancer.
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Affiliation(s)
- Senem NOYAN
- Biotechnology Institute, Ankara University, Ankara,
Turkiye
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Kim MS, Lee SW, Kim K, Kim Y, Hwang H, Hinterdorfer P, Choi D, Ko K. Single-cell transcriptome sequencing of plant leaf expressing anti-HER2 VHH-FcK cancer therapeutic protein. Sci Data 2023; 10:911. [PMID: 38114492 PMCID: PMC10730532 DOI: 10.1038/s41597-023-02833-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 12/07/2023] [Indexed: 12/21/2023] Open
Abstract
The transgenic plant is a promising strategy for the production of highly valuable biotherapeutic proteins such as recombinant vaccines and antibodies. To achieve an efficient level of protein production, codon sequences and expression cassette elements need to be optimized. However, the systematical expression of recombinant proteins in plant biomass can generally be controlled for the production of therapeutic proteins after the generation of transgenic plants. Without understanding the transgene expression patterns in plant tissue, it is difficult to enhance further production levels. In this study, single-cell RNA-sequencing (scRNA-seq) analysis of transgenic tobacco (Nicotiana tabacum) leaf, expressing an immunotherapeutic llama antibody against breast cancer, anti-HER2 VHH-Fc, was conducted to obtain data on the expression pattern of tissue-specific cells. These high-quality scRNA-seq data enabled the identification of gene expression patterns by cell types, which can be applied to select the best cell types or tissues for the high production of these recombinant antibodies. These data provide a foundation to elucidate the mechanisms that regulate the biosynthesis of recombinant proteins in N. tabacum.
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Affiliation(s)
- Myung-Shin Kim
- Department of Agriculture, Forestry and Bioresources, Plant Genomics and Breeding Institute, College of Agriculture and Life Science, Seoul National University, Seoul, 08826, Korea
- Plant Immunity Research Center, Seoul National University, Seoul, 08826, Korea
- Department of Biosciences and Bioinformatics, Myongji University, Yongin, 17058, Korea
| | - Seung-Won Lee
- Cancer Early Detection Advanced Research Center, Knight Cancer Institute, Oregon Health & Science University, Portland, Oregon, 97201, USA
| | - Kibum Kim
- Department of Medicine, College of Medicine, Chung-Ang University, Seoul, 06074, Korea
| | - Yerin Kim
- Department of Medicine, College of Medicine, Chung-Ang University, Seoul, 06074, Korea
| | - Hyunjoo Hwang
- Department of Medicine, College of Medicine, Chung-Ang University, Seoul, 06074, Korea
| | - Peter Hinterdorfer
- Department of Applied Experimental Biophysics, Johannes Kepler University Linz, 4040, Linz, Austria
| | - Doil Choi
- Department of Agriculture, Forestry and Bioresources, Plant Genomics and Breeding Institute, College of Agriculture and Life Science, Seoul National University, Seoul, 08826, Korea
- Plant Immunity Research Center, Seoul National University, Seoul, 08826, Korea
| | - Kisung Ko
- Department of Medicine, College of Medicine, Chung-Ang University, Seoul, 06074, Korea.
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Franco AFDV, Malinverni ACM, Waitzberg AFL. Immunoexpression of HER2 pathway related markers in HER2 invasive breast carcinomas treated with trastuzumab. Pathol Res Pract 2023; 252:154917. [PMID: 37977031 DOI: 10.1016/j.prp.2023.154917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Revised: 10/31/2023] [Accepted: 11/01/2023] [Indexed: 11/19/2023]
Abstract
PURPOSE We evaluated the immunoexpression of potential markers involved in the HER2 pathway in invasive breast carcinoma with HER2 amplification treated with trastuzumab. METHODS Samples of ninety patients diagnosed and treated at two public Brazilian hospitals with overexpressed invasive carcinoma between 2009 and 2018 were included. Several markers (Bcl-2, CDK4, cyclin D1, EGFR, IGF1, IGF-1R, MDM2, MUC4, p16, p21, p27, p53, PTEN, RA, TNFα, and VEGF) were immune analyzed in the tumor by immunohistochemistry and then correlated with clinicopathological variables. RESULTS Tumor sample expression results determined potential markers of good prognosis with statistically significant values: cyclin D1 with a nuclear grade, and recurrence; IGF-1 with tumor size, and death; p16 with a response after treatment; PTEN with a response after treatment, and death. Markers of poor prognosis: p53 with histological, and nuclear grade; IGF-1R with a compromised lymph node. The treatment resistance rate after trastuzumab was 40%; the overall survival was 4.13 years (95% CI 5.1-12.5) and the disease-free survival was 3.6 years (95% CI 5.1-13.1). CONCLUSIONS The tumor samples profile demonstrated that cyclin D1, IGF-1, p16, and PTEN presented the potential for a good prognosis and p53 and IGF-1R for worse.
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Affiliation(s)
- Andreia Fabiana do Vale Franco
- Pathology Department, Universidade Federal de São Paulo, Escola Paulista, de Medicina, Botucatu Street, 740, 1st Floor Vila Clementino, São Paulo, SP, Brazil; Laboratory of Molecular and Experimental Pathology, Universidade Federal, de São Paulo, Escola Paulista de Medicina, Pedro de Toledo Street, 781, 5th Floor - Vila Clementino, São Paulo, SP, Brazil.
| | - Andrea Cristina Moraes Malinverni
- Pathology Department, Universidade Federal de São Paulo, Escola Paulista, de Medicina, Botucatu Street, 740, 1st Floor Vila Clementino, São Paulo, SP, Brazil; Laboratory of Molecular and Experimental Pathology, Universidade Federal, de São Paulo, Escola Paulista de Medicina, Pedro de Toledo Street, 781, 5th Floor - Vila Clementino, São Paulo, SP, Brazil
| | - Angela Flavia Logullo Waitzberg
- Pathology Department, Universidade Federal de São Paulo, Escola Paulista, de Medicina, Botucatu Street, 740, 1st Floor Vila Clementino, São Paulo, SP, Brazil; Laboratory of Molecular and Experimental Pathology, Universidade Federal, de São Paulo, Escola Paulista de Medicina, Pedro de Toledo Street, 781, 5th Floor - Vila Clementino, São Paulo, SP, Brazil
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Huang YQ, Wang S, Gong DH, Kumar V, Dong YW, Hao GF. In silico resources help combat cancer drug resistance mediated by target mutations. Drug Discov Today 2023; 28:103686. [PMID: 37379904 DOI: 10.1016/j.drudis.2023.103686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 05/31/2023] [Accepted: 06/20/2023] [Indexed: 06/30/2023]
Abstract
Drug resistance causes catastrophic cancer treatment failures. Mutations in target proteins with altered drug binding indicate a main mechanism of cancer drug resistance (CDR). Global research has generated considerable CDR-related data and well-established knowledge bases and predictive tools. Unfortunately, these resources are fragmented and underutilized. Here, we examine computational resources for exploring CDR caused by target mutations, analyzing these tools based on their functional characteristics, data capacity, data sources, methodologies and performance. We also discuss their disadvantages and provide examples of how potential inhibitors of CDR have been discovered using these resources. This toolkit is designed to help specialists explore resistance occurrence effectively and to explain resistance prediction to non-specialists easily.
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Affiliation(s)
- Yuan-Qin Huang
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China
| | - Shuang Wang
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China
| | - Dao-Hong Gong
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China
| | - Vinit Kumar
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China
| | - Ya-Wen Dong
- School of Pharmaceutical Sciences, Guizhou University, Guiyang 550025, China
| | - Ge-Fei Hao
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China.
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6
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Huang YQ, Sun P, Chen Y, Liu HX, Hao GF, Song BA. Bioinformatics toolbox for exploring target mutation-induced drug resistance. Brief Bioinform 2023; 24:7026012. [PMID: 36738254 DOI: 10.1093/bib/bbad033] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 12/25/2022] [Accepted: 01/14/2023] [Indexed: 02/05/2023] Open
Abstract
Drug resistance is increasingly among the main issues affecting human health and threatening agriculture and food security. In particular, developing approaches to overcome target mutation-induced drug resistance has long been an essential part of biological research. During the past decade, many bioinformatics tools have been developed to explore this type of drug resistance, and they have become popular for elucidating drug resistance mechanisms in a low cost, fast and effective way. However, these resources are scattered and underutilized, and their strengths and limitations have not been systematically analyzed and compared. Here, we systematically surveyed 59 freely available bioinformatics tools for exploring target mutation-induced drug resistance. We analyzed and summarized these resources based on their functionality, data volume, data source, operating principle, performance, etc. And we concisely discussed the strengths, limitations and application examples of these tools. Specifically, we tested some predictive tools and offered some thoughts from the clinician's perspective. Hopefully, this work will provide a useful toolbox for researchers working in the biomedical, pesticide, bioinformatics and pharmaceutical engineering fields, and a good platform for non-specialists to quickly understand drug resistance prediction.
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Affiliation(s)
- Yuan-Qin Huang
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, P. R. China
| | - Ping Sun
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, P. R. China
| | - Yi Chen
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, P. R. China
| | - Huan-Xiang Liu
- Faculty of Applied Science, Macao Polytechnic University, Macao 999078, SAR, China
| | - Ge-Fei Hao
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, P. R. China
| | - Bao-An Song
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, P. R. China
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Handayani S, Susidarti RA, Utomo RY, Meiyanto E, Jenie RI. Synergistic Cytotoxic and Antimigratory Effect of Brazilein and Doxorubicin on HER2-Overexpressing Cells. Asian Pac J Cancer Prev 2022; 23:2623-2632. [PMID: 36037115 PMCID: PMC9741888 DOI: 10.31557/apjcp.2022.23.8.2623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Accepted: 08/01/2022] [Indexed: 06/15/2023] Open
Abstract
OBJECTIVE The present research aims to report cytotoxic and antimigratory activities of the oxidized form of brazilin, i.e., brazilein, and the effects of the combination of brazilein-doxorubicin on MCF-7/HER2 cells. METHODS The MTT assay was conducted to test the cytotoxic activity, while flow cytometry with PI and PI-annexin V staining were respectively performed for cell cycle and apoptosis analyses. Migration and invasion analyses were assessed via Boyden chamber assay, while HER2, Rac1, p120, MMP2, and MMP9 protein levels were determined by immunoblotting and gelatin zymography. Molecular docking of ligands with HER2, Src, PI3Kα, PI3KΔ, and PI3Kγ proteins was evaluated using MOE 2010. RESULTS The MTT assay showed that the IC50 value of brazilein against MCF-7/HER2 cells was 51 ± 2.1 µM. Moreover, brazilein and its combination with doxorubicin-induced G2/M accumulation and apoptosis. Combination of brazilein-doxorubicin inhibited cell migration and tended to decrease HER2, Rac1, p120, MMP2, and MMP9 protein expression levels. Based on our molecular docking study, the docking score of brazilein with PI3Kγ is comparable to that of the native ligand. CONCLUSION Taken together, a combination of brazilein-doxorubicin exhibited synergistic cytotoxic and antimigratory effects on MCF-7/HER2 cells.<br />.
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Affiliation(s)
- Sri Handayani
- Research Center for Food Technology and Processing, National Research and Innovation Agency (BRIN), JL. Jogja - Wonosari, km 31.5, Yogyakarta, Indonesia.
- Cancer Chemoprevention Research Center, Faculty of Pharmacy, Universitas Gadjah Mada, Yogyakarta, Indonesia.
| | - Ratna Asmah Susidarti
- Cancer Chemoprevention Research Center, Faculty of Pharmacy, Universitas Gadjah Mada, Yogyakarta, Indonesia.
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Universitas Gadjah Mada, Yogyakarta, Indonesia.
| | - Rohmad Yudi Utomo
- Cancer Chemoprevention Research Center, Faculty of Pharmacy, Universitas Gadjah Mada, Yogyakarta, Indonesia.
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Universitas Gadjah Mada, Yogyakarta, Indonesia.
| | - Edy Meiyanto
- Cancer Chemoprevention Research Center, Faculty of Pharmacy, Universitas Gadjah Mada, Yogyakarta, Indonesia.
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Universitas Gadjah Mada, Yogyakarta, Indonesia.
| | - Riris Istighfari Jenie
- Cancer Chemoprevention Research Center, Faculty of Pharmacy, Universitas Gadjah Mada, Yogyakarta, Indonesia.
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Universitas Gadjah Mada, Yogyakarta, Indonesia.
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Gu Y, Gao H, Zhang H, John A, Zhu X, Shivaram S, Yu J, Weinshilboum RM, Wang L. TRAF4 hyperactivates HER2 signaling and contributes to Trastuzumab resistance in HER2-positive breast cancer. Oncogene 2022; 41:4119-4129. [PMID: 35864174 PMCID: PMC9417995 DOI: 10.1038/s41388-022-02415-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 07/06/2022] [Accepted: 07/08/2022] [Indexed: 11/09/2022]
Abstract
The HER2 receptor modulates downstream signaling by forming homodimers and heterodimers with other members of the HER family. For patients with HER2-positive breast cancer, Trastuzumab, an anti-HER2 monoclonal antibody as first-line therapy has shown significant survival benefits. However, the development of acquired resistance to Trastuzumab continues to be a significant obstacle. TNF receptor-associated factor 4 (TRAF4) upregulation was discovered to be associated with a worse clinical outcome. Here we identified TRAF4 overexpression as one of the putative mechanisms for HER2-positive breast cancer cells to maintain HER2 signaling during Trastuzumab treatment, while TRAF4 knockdown reduced HER2 stability and improved Trastuzumab sensitivity. Mechanistically, TRAF4 regulates HER2 level through its impact on SMAD specific E3 ubiquitin protein ligase protein 2 (SMURF2). The development of a membrane-associated protein complex containing HER2, TRAF4, and SMURF2 has been observed. SMURF2 bound to the HER2 cytoplasmic domain, and directly ubiquitinated it leading to HER2 degradation, whereas TRAF4 stabilized HER2 by degrading SMURF2 and inhibiting the binding of SMURF2 to HER2. Moreover, downregulation of TRAF4 has decreased the AKT/mTOR signaling. In conclusion, we discovered a new HER2 signaling regulation that involves the TRAF4-SMURF2 complex, a possible mechanism that might contribute to anti-HER2 resistance, making TRAF4 a viable target for treating HER2 + breast cancer.
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Affiliation(s)
- Yayun Gu
- Division of Clinical Pharmacology, Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, MN, USA
| | - Huanyao Gao
- Division of Clinical Pharmacology, Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, MN, USA
| | - Huan Zhang
- Division of Clinical Pharmacology, Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, MN, USA
| | - August John
- Division of Clinical Pharmacology, Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, MN, USA
| | - Xiujuan Zhu
- Division of Clinical Pharmacology, Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, MN, USA
| | - Suganti Shivaram
- Division of Clinical Pharmacology, Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, MN, USA
| | - Jia Yu
- Division of Clinical Pharmacology, Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, MN, USA
| | - Richard M Weinshilboum
- Division of Clinical Pharmacology, Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, MN, USA
| | - Liewei Wang
- Division of Clinical Pharmacology, Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, MN, USA.
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Chen M, Lin Z, Yao G, Hong X, Xue X, Chen L. A Novel NIR Fluorescent Nanoprobe Targeting HER2-Positive Breast Cancer: Tra-TTR-A. Bioinorg Chem Appl 2021; 2021:2495958. [PMID: 35003236 PMCID: PMC8739169 DOI: 10.1155/2021/2495958] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 11/15/2021] [Accepted: 11/16/2021] [Indexed: 11/18/2022] Open
Abstract
TTRE, a photosensitizer molecule, has excellent biofluorescence imaging performance and effective antitumor properties for breast cancer. However, its application in breast cancer treatment is limited due to poor tumor selectivity and lack of targeting ability. In this study, TTRE and trastuzumab were combined to synthesize Tra-TTR-A, a novel near-infrared fluorescent nanoprobe for HER2 positive breast cancer. The targeting and antitumor abilities of Tra-TTR-A in breast cancer were also investigated. Like TTRE, Tra-TTR-A has a stable structure with remarkable optical properties and in vivo imaging capacity. However, Tra-TTR-A not only inhibits tumor growth by generating reactive oxygen species but also kills tumor cells by trastuzumab. In this study, Tra-TTR-A, a new type of near-infrared fluorescent nanoprobe that targets HER2-positive breast cancer, was successfully synthesized. Tra-TTR-A could be used in in vivo imaging, targeted photodynamic therapy, and diagnosis and treatment for breast cancer.
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Affiliation(s)
- Meijuan Chen
- State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Viral Hepatitis Research, Department of Hepatology Unit and Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Zhousheng Lin
- Breast Center, Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Guangyu Yao
- Breast Center, Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Xi Hong
- Breast Center, Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Xiaolei Xue
- Department of Pathology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Lujia Chen
- Breast Center, Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
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Zhang M, Li Z, Liu X. MiR-98-5p/IGF2 Axis Influence Herceptin Sensitivity through IGF1R/HER2 Heterodimer Formation and AKT/mTOR Signal Pathway in HER2 Positive Breast Cancer. Asian Pac J Cancer Prev 2021; 22:3693-3703. [PMID: 34837929 PMCID: PMC9068184 DOI: 10.31557/apjcp.2021.22.11.3693] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND AND AIM IGF1R and HER2 are both members of the growth factor receptor family which is known to play a different role in breast cancer. However, correlation between IGF1R and HER2 has created a controversial situation that need to be fully delineated in development of Herceptin resistance. The aim of this study was to investigate the mechanism of Herceptin resistance through the IGF1R pathway in HER2 positive breast cancer. MATERIALS AND METHODS Clinical data were obtained from TCGA database and archived documents from The First Affiliated Hospital of Bengbu Medical College. Western blot and immunohistochemistry were used to detect proteins and their phosphorylation. Cell transfection were constructed using shRNA lentivirus vectors. RNAs were analyzed by RT-qPCR. Proteins in serum were analyzed by ELISA assay. Cell proliferation was analyzed by MTS method. Luciferase report experiment was conducted to verify RNA's inter-reaction. RESULTS Western blot showed IGF2 protein was significantly increased in Herceptin resistant SKBR3-R cells (P<0.01), and IGF1R/HER2 heterodimer level was significantly increased (P<0.01). Luciferase reporter assay verified miR-98-5p could bind to 3 'UTR of IGF2 mRNA. When miR-98-5p was upregulated, the expression level of IGF2 was decreased(P<0.01), the cell invasive ability was reduced(P<0.01), and ultimately, Herceptin resistant cells regained their sensitivity to Herceptin. In clinical research, we found that decreased miR-98-5p level or increased IGF2 level significantly associated with poor treatment response and poor overall survival (OS), poor recurrence free survival (RFS) and poor distant metastasis-free survival (DMFS) in HER2-positive breast cancer. CONCLUSION MiR-98-5p and IGF2 might potential candidates for predicting Herceptin sensitivity and provides a new way to overcome Herceptin resistance in clinic.
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Zheng G, Guo Z, Li W, Xi W, Zuo B, Zhang R, Wen W, Yang AG, Jia L. Interaction between HLA-G and NK cell receptor KIR2DL4 orchestrates HER2-positive breast cancer resistance to trastuzumab. Signal Transduct Target Ther 2021; 6:236. [PMID: 34158475 PMCID: PMC8219715 DOI: 10.1038/s41392-021-00629-w] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 04/29/2021] [Accepted: 05/07/2021] [Indexed: 12/12/2022] Open
Abstract
Despite the successful use of the humanized monoclonal antibody trastuzumab (Herceptin) in the clinical treatment of human epidermal growth factor receptor 2 (HER2)-overexpressing breast cancer, the frequently occurring drug resistance remains to be overcome. The regulatory mechanisms of trastuzumab-elicited immune response in the tumor microenvironment remain largely uncharacterized. Here, we found that the nonclassical histocompatibility antigen HLA-G desensitizes breast cancer cells to trastuzumab by binding to the natural killer (NK) cell receptor KIR2DL4. Unless engaged by HLA-G, KIR2DL4 promotes antibody-dependent cell-mediated cytotoxicity and forms a regulatory circuit with the interferon-γ (IFN-γ) production pathway, in which IFN-γ upregulates KIR2DL4 via JAK2/STAT1 signaling, and then KIR2DL4 synergizes with the Fcγ receptor to increase IFN-γ secretion by NK cells. Trastuzumab treatment of neoplastic and NK cells leads to aberrant cytokine production characterized by excessive tumor growth factor-β (TGF-β) and IFN-γ, which subsequently reinforce HLA-G/KIR2DL4 signaling. In addition, TGF-β and IFN-γ impair the cytotoxicity of NK cells by upregulating PD-L1 on tumor cells and PD-1 on NK cells. Blockade of HLA-G/KIR2DL4 signaling improved the vulnerability of HER2-positive breast cancer to trastuzumab treatment in vivo. These findings provide novel insights into the mechanisms underlying trastuzumab resistance and demonstrate the applicability of combined HLA-G and PD-L1/PD-1 targeting in the treatment of trastuzumab-resistant breast cancer.
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Affiliation(s)
- Guoxu Zheng
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, China
| | - Zhangyan Guo
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, China
| | - Weimiao Li
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Wenjin Xi
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, China
| | - Baile Zuo
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, China
| | - Rui Zhang
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, China
| | - Weihong Wen
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, China
| | - An-Gang Yang
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, China.
| | - Lintao Jia
- State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an, China.
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12
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Yang H, Xu Y, Shang D, Shi H, Zhang C, Dong Q, Zhang Y, Bai Z, Cheng S, Li X. ncDRMarker: a computational method for identifying non-coding RNA signatures of drug resistance based on heterogeneous network. ANNALS OF TRANSLATIONAL MEDICINE 2020; 8:1395. [PMID: 33313140 PMCID: PMC7723624 DOI: 10.21037/atm-20-603] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Background Drug resistance is the primary cause of failure in the treatment of cancer. Identifying signatures of chemoresistance will help to overcome this problem. Current drug resistance studies focus on protein-coding genes and ignore non-coding RNAs (ncRNAs), rendering it a challenging task to systematically identify ncRNAs involved in drug resistance. Methods In this study, protein-protein, miRNA-target gene, miRNA-lncRNA interactions were integrated to construct a mRNA-miRNA-lncRNA network. Then, the random walk with restart (RWR) method was extended to the network for identifying ncRNA signatures of drug resistance. The leave-one-out cross validation (LOOCV) and receiver operating characteristic curve (ROC) were used to estimate the performance of ncDRMarker. Wilcoxon rank-sum test was used to validate the identified ncRNAs in NCI-60 cancer cell lines. KEGG pathway enrichment analysis was implemented to characterize the biological function of some identified ncRNAs. Results We performed this method on ten common clinical chemotherapy drugs and analyzed the results in detail. The region beneath the ROC was up to 0.881–0.951, which did not change significantly in the incomplete network, indicating the high performance and robustness of the method. Further, we confirmed the role of the identified ncRNAs in drug resistance, i.e., miR-92a-3p, a candidate chemoresistance ncRNA of tamoxifen and paclitaxel, can significantly classify cancer cell lines into sensitive or resistant to tamoxifen (or paclitaxel). We also dissected the mRNA-miRNA-lncRNA composite network and found that some hub ncRNAs, such as miR-124-3p, were involved in resistance of multiple drugs and engaged in many significant cancer-related pathways. Lastly, we have provided a ncDRMarker platform for users to identify candidate ncRNAs of drug resistance, which is available at http://bio-bigdata.hrbmu.edu.cn/ncDRMarker/index. Conclusions Our findings suggest that ncDRMarker is an effective computational technique for prioritizing candidate ncRNAs of drug resistance. Additionally, the identified ncRNAs could be targeted to overcome drug resistance and help realize individualized treatment.
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Affiliation(s)
- Haixiu Yang
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, China
| | - Yanjun Xu
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, China
| | - Desi Shang
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, China
| | - Hongbo Shi
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, China
| | - Chunlong Zhang
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, China
| | - Qun Dong
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, China
| | - Yizheng Zhang
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, China
| | - Ziyi Bai
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, China
| | - Shujun Cheng
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, China.,State Key Laboratory of Molecular Oncology, Department of Etiology and Carcinogenesis, Cancer Institute and Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Xia Li
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, China
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13
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In Silico Design and Evaluation of scFv-CdtB as a Novel Immunotoxin for Breast Cancer Treatment. INTERNATIONAL JOURNAL OF CANCER MANAGEMENT 2020. [DOI: 10.5812/ijcm.96094] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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14
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Criteria of metabolic response to immunotherapy. Rev Esp Med Nucl Imagen Mol 2020. [DOI: 10.1016/j.remnie.2019.12.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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15
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Chen Z, Sun T, Yang Z, Zheng Y, Yu R, Wu X, Yan J, Shao YW, Shao X, Cao W, Wang X. Monitoring treatment efficacy and resistance in breast cancer patients via circulating tumor DNA genomic profiling. Mol Genet Genomic Med 2019; 8:e1079. [PMID: 31867841 PMCID: PMC7005625 DOI: 10.1002/mgg3.1079] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 09/16/2019] [Accepted: 10/23/2019] [Indexed: 01/03/2023] Open
Abstract
Background One of the major challenges in managing invasive breast cancer (BC) is the lack of reliable biomarkers to track response. Circulating tumor DNA (ctDNA) from liquid biopsy, as a candidate biomarker, provides a valuable assessment of BC patients. In this retrospective study, we evaluated the utility of ctDNA to reflect the efficacy of treatment and to monitor resistance mechanisms. Methods Targeted next‐generation sequencing (NGS) of 416 cancer‐relevant genes was performed on 41 plasma biopsy samples of 19 HER2+ and 12 HER2‐ BC patients. Longitudinal ctDNA samples were analyzed in three BC patients over the treatment course for detecting acquired mutations. Results In HER2+ BC patients, ERBB2 somatic copy numbers in ctDNA samples were significantly higher in patients progressed on HER2‐targeted therapy than those who were still responding to the treatment. Recurrent acquired mutations were detected in genes including ERBB2, TP53, EGFR, NF1, and SETD2, which may contribute to trastuzumab resistance. In longitudinal analyses, the observed mutation allele frequencies were tracked closely in concordance with treatment responses. A novel ERBB2 p.(Leu869Arg) mutation was acquired in one patient upon resistant to trastuzumab therapy, which was further validated as an oncogenic mutation in vitro and contributed to resistance. In HER2‐ BC patients with chemotherapy resistance, genetic alterations on TP53, PIK3CA, and DNA damage repair genes were frequently observed. Conclusions In summary, ctDNA monitoring, particularly longitudinal analyses, provides valuable insights into the assessment of targeted therapy efficacy and gene alterations underlying trastuzumab resistance and chemotherapy resistance in HER2+ and HER2‐ BC patients, respectively.
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Affiliation(s)
- Zhanhong Chen
- Department of Medical Oncology, Zhejiang Cancer Hospital, Hangzhou, China
| | - Tian Sun
- Translational Medicine Research Institute, Geneseeq Technology Inc, Toronto, Ontario, Canada
| | - Ziyan Yang
- The Second Clinical Medical College of Zhejiang, Chinese Medical University, Hangzhou, China
| | - Yabing Zheng
- Department of Medical Oncology, Zhejiang Cancer Hospital, Hangzhou, China
| | - Ruoying Yu
- Translational Medicine Research Institute, Geneseeq Technology Inc, Toronto, Ontario, Canada
| | - Xue Wu
- Translational Medicine Research Institute, Geneseeq Technology Inc, Toronto, Ontario, Canada
| | - Junrong Yan
- Nanjing Geneseeq Technology Inc., Nanjing, China
| | - Yang W Shao
- Nanjing Geneseeq Technology Inc., Nanjing, China.,School of Public Health, Nanjing Medical University, Nanjing, China
| | - Xiying Shao
- Department of Medical Oncology, Zhejiang Cancer Hospital, Hangzhou, China
| | - Wenming Cao
- Department of Medical Oncology, Zhejiang Cancer Hospital, Hangzhou, China
| | - Xiaojia Wang
- Department of Medical Oncology, Zhejiang Cancer Hospital, Hangzhou, China
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16
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Mucientes Rasilla J, Gutiérrez Sanz L. Criteria of metabolic response to immunotherapy. Rev Esp Med Nucl Imagen Mol 2019; 39:51-56. [PMID: 31806574 DOI: 10.1016/j.remn.2019.10.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 10/22/2019] [Accepted: 10/24/2019] [Indexed: 11/18/2022]
Abstract
Therapy response assessment is one of the most challenging indications of imaging studies. In clinical trial patients is usually measured with standardized response criteria. However, in the clinical practice, many studies are carried out in which the clinical question is whether or not the treatment is being effective. Answering this question is one of the greatest challenges for diagnostic imaging physicians, especially when a new treatment modality is being introduced, whose effects on tumoral lesions are firstly poorly understood. We have an essential role in the introduction of new therapies, assessing their effects and benefits. The knowledge of these effects has led to the development of many response criteria that, despite being applicable only in clinical trials, offer us information on how to interpret the findings in clinical practice.
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Affiliation(s)
- J Mucientes Rasilla
- Servicio de Medicina Nuclear, Hospital Universitario Puerta de Hierro, Majadahonda, Madrid, España.
| | - L Gutiérrez Sanz
- Servicio de Oncología Médica, Hospital Universitario Puerta de Hierro, Majadahonda, Madrid, España
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17
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Wang J, Xu B. Targeted therapeutic options and future perspectives for HER2-positive breast cancer. Signal Transduct Target Ther 2019; 4:34. [PMID: 31637013 PMCID: PMC6799843 DOI: 10.1038/s41392-019-0069-2] [Citation(s) in RCA: 200] [Impact Index Per Article: 40.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Revised: 08/22/2019] [Accepted: 08/22/2019] [Indexed: 12/12/2022] Open
Abstract
Over the past 2 decades, there has been an extraordinary progress in the regimens developed for the treatment of human epidermal growth factor receptor 2 (HER2)-positive breast cancer. Trastuzumab, pertuzumab, lapatinib, and ado-trastuzumab emtansine (T-DM1) are commonly recommended anti-HER2 target agents by the U.S. Food and Drug Administration. This review summarizes the most significant and updated research on clinical scenarios related to HER2-positive breast cancer management in order to revise the guidelines of everyday clinical practices. In this article, we present the data on anti-HER2 clinical research of neoadjuvant, adjuvant, and metastatic studies from the past 2 decades. We also highlight some of the promising strategies that should be critically considered. Lastly, this review lists some of the ongoing clinical trials, findings of which may soon be available.
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Affiliation(s)
- Jiani Wang
- Department of Medical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 17, Panjiayuannanli, Chaoyang District, 100021 Beijing, China
| | - Binghe Xu
- Department of Medical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 17, Panjiayuannanli, Chaoyang District, 100021 Beijing, China
- State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 17, Panjiayuannanli, Chaoyang District, 100021 Beijing, China
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18
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Sun X, Hu B. Mathematical modeling and computational prediction of cancer drug resistance. Brief Bioinform 2019; 19:1382-1399. [PMID: 28981626 PMCID: PMC6402530 DOI: 10.1093/bib/bbx065] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Indexed: 12/23/2022] Open
Abstract
Diverse forms of resistance to anticancer drugs can lead to the failure of chemotherapy. Drug resistance is one of the most intractable issues for successfully treating cancer in current clinical practice. Effective clinical approaches that could counter drug resistance by restoring the sensitivity of tumors to the targeted agents are urgently needed. As numerous experimental results on resistance mechanisms have been obtained and a mass of high-throughput data has been accumulated, mathematical modeling and computational predictions using systematic and quantitative approaches have become increasingly important, as they can potentially provide deeper insights into resistance mechanisms, generate novel hypotheses or suggest promising treatment strategies for future testing. In this review, we first briefly summarize the current progress of experimentally revealed resistance mechanisms of targeted therapy, including genetic mechanisms, epigenetic mechanisms, posttranslational mechanisms, cellular mechanisms, microenvironmental mechanisms and pharmacokinetic mechanisms. Subsequently, we list several currently available databases and Web-based tools related to drug sensitivity and resistance. Then, we focus primarily on introducing some state-of-the-art computational methods used in drug resistance studies, including mechanism-based mathematical modeling approaches (e.g. molecular dynamics simulation, kinetic model of molecular networks, ordinary differential equation model of cellular dynamics, stochastic model, partial differential equation model, agent-based model, pharmacokinetic–pharmacodynamic model, etc.) and data-driven prediction methods (e.g. omics data-based conventional screening approach for node biomarkers, static network approach for edge biomarkers and module biomarkers, dynamic network approach for dynamic network biomarkers and dynamic module network biomarkers, etc.). Finally, we discuss several further questions and future directions for the use of computational methods for studying drug resistance, including inferring drug-induced signaling networks, multiscale modeling, drug combinations and precision medicine.
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Affiliation(s)
- Xiaoqiang Sun
- Zhong-shan School of Medicine, Sun Yat-Sen University
| | - Bin Hu
- School of Information Science and Engineering, Lanzhou University
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19
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Jiang N, Lin JJ, Wang J, Zhang BN, Li A, Chen ZY, Guo S, Li BB, Duan YZ, Yan RY, Yan HF, Fu XY, Zhou JL, Yang HM, Cui Y. Novel treatment strategies for patients with HER2-positive breast cancer who do not benefit from current targeted therapy drugs. Exp Ther Med 2018; 16:2183-2192. [PMID: 30186457 PMCID: PMC6122384 DOI: 10.3892/etm.2018.6459] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Accepted: 06/27/2018] [Indexed: 12/11/2022] Open
Abstract
Human epidermal growth factor receptor-2 positive breast cancer (HER2+ BC) is characterized by a high rate of metastasis and drug resistance. The advent of targeted therapy drugs greatly improves the prognosis of HER2+ BC patients. However, drug resistance or severe side effects have limited the application of targeted therapy drugs. To achieve more effective treatment, considerable research has concentrated on strategies to overcome drug resistance. Abemaciclib (CDK4/6 inhibitor), a new antibody-drug conjugate (ADC), src homology 2 (SH2) containing tyrosine phosphatase-1 (SHP-1) and fatty acid synthase (FASN) have been demonstrated to improve drug resistance. In addition, using an effective vector to accurately deliver drugs to tumors has shown good application prospects. Many studies have also found that natural anti-cancer substances produced effective results during in vitro and in vivo anti-HER2+ BC research. This review aimed to summarize the current status of potential clinical drugs that may benefit HER2+ BC patients in the future.
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Affiliation(s)
- Nan Jiang
- Department of General Surgery, 306 Hospital of PLA, Beijing 100101, P.R. China
- Department of General Surgery, 306 Teaching Hospital of Peking University Health Science Center, Beijing 100101, P.R. China
| | - Jing-Jing Lin
- Department of General Surgery, 306 Hospital of PLA, Beijing 100101, P.R. China
- Department of General Surgery, 306 Teaching Hospital of Peking University Health Science Center, Beijing 100101, P.R. China
| | - Jun Wang
- Department of Hepatology, 302 Teaching Hospital of Peking University Health Science Center, Beijing 100101, P.R. China
| | - Bei-Ning Zhang
- Department of General Surgery, 306 Hospital of PLA, Beijing 100101, P.R. China
- Department of General Surgery, PLA 306 Clinical Hospital of Anhui Medical University, Beijing 230000, P.R. China
| | - Ao Li
- Department of General Surgery, 306 Hospital of PLA, Beijing 100101, P.R. China
- Department of General Surgery, PLA 306 Clinical Hospital of Anhui Medical University, Beijing 230000, P.R. China
| | - Zheng-Yang Chen
- Department of General Surgery, 306 Hospital of PLA, Beijing 100101, P.R. China
- Department of General Surgery, 306 Teaching Hospital of Peking University Health Science Center, Beijing 100101, P.R. China
| | - Song Guo
- Department of General Surgery, 306 Hospital of PLA, Beijing 100101, P.R. China
- Department of General Surgery, 306 Teaching Hospital of Peking University Health Science Center, Beijing 100101, P.R. China
| | - Bin-Bin Li
- Department of General Surgery, 306 Hospital of PLA, Beijing 100101, P.R. China
- Department of General Surgery, PLA 306 Clinical Hospital of Anhui Medical University, Beijing 230000, P.R. China
| | - Yu-Zhong Duan
- Department of General Surgery, 306 Hospital of PLA, Beijing 100101, P.R. China
| | - Ru-Yi Yan
- Department of General Surgery, PLA 306 Clinical Hospital of Anhui Medical University, Beijing 230000, P.R. China
- Department of Pathology, 306 Hospital of PLA, Beijing 100101, P.R. China
| | - Hong-Feng Yan
- Department of General Surgery, 306 Hospital of PLA, Beijing 100101, P.R. China
| | - Xiao-Yan Fu
- Department of General Surgery, 306 Hospital of PLA, Beijing 100101, P.R. China
| | - Jin-Lian Zhou
- Department of Pathology, 306 Hospital of PLA, Beijing 100101, P.R. China
| | - He-Ming Yang
- Department of General Surgery, 306 Hospital of PLA, Beijing 100101, P.R. China
| | - Yan Cui
- Department of General Surgery, 306 Hospital of PLA, Beijing 100101, P.R. China
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20
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Jenie RI, Handayani S, Susidarti RA, Udin LZ, Meiyanto E. The Cytotoxic and Antimigratory Activity of Brazilin-Doxorubicin on MCF-7/HER2 Cells. Adv Pharm Bull 2018; 8:507-516. [PMID: 30276148 PMCID: PMC6156471 DOI: 10.15171/apb.2018.059] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Revised: 07/16/2018] [Accepted: 07/19/2018] [Indexed: 12/21/2022] Open
Abstract
Purpose: Breast cancer cells with overexpression of HER2 are known to be more aggressive, invasive, and resistant to chemotherapeutic agent. Brazilin, the major compound in the Caesalpinia sappan L. (CS) heartwood, has been studied for it's anticancer activity. The purpose of this study was to investigate the cytotoxic and antimigratory activity of brazilin (Bi) in combination with doxorubicin (Dox) on MCF-7/HER2 cells. Methods: Cytotoxic activities of Bi individually and in combination with Dox were examined by MTT assay. Synergistic effects were analyzed by combination index (CI). Apoptosis and cell cycle profiles were observed by using flow cytometry. Migrating and invading cells were observed by using a Boyden chamber assay. Levels of MMP2 and MMP9 activity were observed by using a gelatin zymography assay. Levels of HER2, Bcl-2, Rac1, and p120 protein expression were observed by using an immunoblotting assay. Results: The results of the MTT assay showed that Bi inhibited MCF-7/HER2 cell growth in a dose-dependent manner with an IC50 of 54 ± 3.7 µM. Furthermore, the combination of Bi and Dox showed a synergistic effect (CI <1). Flow cytometric analysis of Bi and its combination with Dox showed cellular accumulation in the G2/M phase and induction of apoptosis through suppression of Bcl-2 protein expression. In the Boyden chamber assay, gelatin zymography, and subsequent immunoblotting assay, the combination Bi and Dox inhibited migration, possibly through downregulation of MMP9, MMP2, HER2, Rac1, and p120 protein expression. Conclusion: We conclude that Bi enhanced cytotoxic activity of Dox and inhibited migration of MCF-7/HER2 cells. Therefore, we believe that it has strong potential to be developed for the treatment of metastatic breast cancer with HER2 overexpression.
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Affiliation(s)
- Riris Istighfari Jenie
- Departement of Pharmaceutical Chemistry, Faculty of Pharmacy, Universitas Gadjah Mada, Indonesia.,Cancer Chemoprevention Research Center, Faculty of Pharmacy, Universitas Gadjah Mada, Indonesia
| | - Sri Handayani
- Cancer Chemoprevention Research Center, Faculty of Pharmacy, Universitas Gadjah Mada, Indonesia.,Research Center for Chemistry, Indonesian Institute of Sciences (LIPI), Indonesia
| | - Ratna Asmah Susidarti
- Departement of Pharmaceutical Chemistry, Faculty of Pharmacy, Universitas Gadjah Mada, Indonesia.,Cancer Chemoprevention Research Center, Faculty of Pharmacy, Universitas Gadjah Mada, Indonesia
| | - Linar Zalinar Udin
- Research Center for Chemistry, Indonesian Institute of Sciences (LIPI), Indonesia
| | - Edy Meiyanto
- Departement of Pharmaceutical Chemistry, Faculty of Pharmacy, Universitas Gadjah Mada, Indonesia.,Cancer Chemoprevention Research Center, Faculty of Pharmacy, Universitas Gadjah Mada, Indonesia
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Huang S, Li F, Liu H, Ye P, Fan X, Yuan X, Wu Z, Chen J, Jin C, Shen B, Feng J, Zhang B. Structural and functional characterization of MBS301, an afucosylated bispecific anti-HER2 antibody. MAbs 2018; 10:864-875. [PMID: 30081724 PMCID: PMC6152455 DOI: 10.1080/19420862.2018.1486946] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
MBS301, a glyco-engineered bispecific anti-human epidermal growth factor receptor 2 (HER2) antibody with a typical IgG1 monoclonal antibody structure, was developed through dual-cell expression and in vitro assembling process. MBS301 consists of two half antibodies engineered from trastuzumab and pertuzumab, respectively. Integrity and purity profiles of MB301 indicated that the heterodimerization of the two half antibodies was successful. The high and similar melting temperatures (Tm1,72.0°C and Tm2, 84.8°C) of MBS301 compared with those of its parental monoclonal antibodies trastuzumab and pertuzumab (in-house made T-mab and P-mab, respectively) revealed its structural compactness. With computer-modeling experiments and Biacore binding and competition kinetics studies, the binding stoichiometry between MBS301 and HER2-ECD was determined to be 1:1 and the two arms of MBS301 were shown to bind to domains II and IV of HER2-ECD antigen simultaneously. MBS301 displayed synergistic bioactivities as the combination of T-mab and P-mab in vitro in multiple cancer cell lines and in vivo in xenograft mouse model studies, and showed more effective activity than T-mab or P-mab used individually. Moreover, fucose-knockout dramatically increased MBS301’s binding affinity to low affinity FcγRIIIa allotype 158F (KD = 2.35 × 10−7M) to near the high affinity level of allotype V158 (KD = 1.17 × 10−7M). This resulted in far more effective ADCC activity of MBS301 than the combination of T-mab and P-mab in killing HER2-positive cancer cells. Hence, a novel fully afucosylated anti-HER2 bispecific antibody with improved antitumor activities was generated and shown to have the potential to be used for treating HER2-positive but trastuzumab-resistant solid tumors.
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Affiliation(s)
- Sijia Huang
- a Economic Technological Developmental Area , Beijing Mabworks Biotech Co. Ltd , Beijing , China.,b State Key Laboratory of Toxicology and Medical Countermeasures , Beijing Institute of Pharmacology and Toxicology , Beijing , China
| | - Feng Li
- a Economic Technological Developmental Area , Beijing Mabworks Biotech Co. Ltd , Beijing , China
| | - Huifang Liu
- a Economic Technological Developmental Area , Beijing Mabworks Biotech Co. Ltd , Beijing , China
| | - Pei Ye
- a Economic Technological Developmental Area , Beijing Mabworks Biotech Co. Ltd , Beijing , China
| | - Xiaochuan Fan
- a Economic Technological Developmental Area , Beijing Mabworks Biotech Co. Ltd , Beijing , China
| | - Xinqiu Yuan
- a Economic Technological Developmental Area , Beijing Mabworks Biotech Co. Ltd , Beijing , China
| | - Zhidan Wu
- a Economic Technological Developmental Area , Beijing Mabworks Biotech Co. Ltd , Beijing , China
| | - Jin Chen
- a Economic Technological Developmental Area , Beijing Mabworks Biotech Co. Ltd , Beijing , China
| | - Chunyang Jin
- a Economic Technological Developmental Area , Beijing Mabworks Biotech Co. Ltd , Beijing , China
| | - Beifen Shen
- b State Key Laboratory of Toxicology and Medical Countermeasures , Beijing Institute of Pharmacology and Toxicology , Beijing , China
| | - Jiannan Feng
- b State Key Laboratory of Toxicology and Medical Countermeasures , Beijing Institute of Pharmacology and Toxicology , Beijing , China
| | - Boyan Zhang
- a Economic Technological Developmental Area , Beijing Mabworks Biotech Co. Ltd , Beijing , China
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22
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Lee A, Hong S, Kim D. KRDS: a web server for evaluating drug resistance mutations in kinases by molecular docking. J Cheminform 2018; 10:20. [PMID: 29633047 PMCID: PMC5891443 DOI: 10.1186/s13321-018-0274-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Accepted: 04/02/2018] [Indexed: 11/23/2022] Open
Abstract
Kinases are major targets of anti-cancer therapies owing to their importance in signaling processes that regulate cell growth and proliferation. However, drug resistance has emerged as a major obstacle to cancer therapy. Resistance to drugs has various underlying mechanisms, including the acquisition of mutations at drug binding sites and the resulting reduction in drug binding affinity. Therefore, the identification of mutations that are relevant to drug resistance may be useful to overcome this issue. We hypothesized that these mutations can be identified by combining recent advances in computational methods for protein structure modeling and ligand docking simulation. Hence, we developed a web-based tool named the Kinase Resistance Docking System (KRDS) that enables the assessment of the effects of mutations on kinase-ligand interactions. KRDS receives a list of mutations in kinases, generates structural models of the mutants, performs docking simulations, and reports the results to users. The changes in docking scores and docking conformations can be analyzed to infer the effects of mutations on drug binding and drug resistance. We expect our tool to improve our understanding of drug binding mechanisms and facilitate the development of effective new drugs to overcome resistance related to kinases; it may be particularly useful for biomedical researchers who are not familiar with computational environments. Our tool is available at http://bcbl.kaist.ac.kr/KRDS/.
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Affiliation(s)
- Aeri Lee
- Department of Bio and Brain Engineering, KAIST, Daejeon, 34141, Republic of Korea
| | - Seungpyo Hong
- Division of Nutrition and Metabolism Research, Korea Food Research Institute, Wanju-gun, Jeollabuk-do, Republic of Korea
| | - Dongsup Kim
- Department of Bio and Brain Engineering, KAIST, Daejeon, 34141, Republic of Korea.
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Identification of breast cancer cell subtypes sensitive to ATG4B inhibition. Oncotarget 2018; 7:66970-66988. [PMID: 27556700 PMCID: PMC5341851 DOI: 10.18632/oncotarget.11408] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2016] [Accepted: 08/09/2016] [Indexed: 01/22/2023] Open
Abstract
Autophagy, a lysosome-mediated degradation and recycling process, functions in advanced malignancies to promote cancer cell survival and contribute to cancer progression and drug resistance. While various autophagy inhibition strategies are under investigation for cancer treatment, corresponding patient selection criteria for these autophagy inhibitors need to be developed. Due to its central roles in the autophagy process, the cysteine protease ATG4B is one of the autophagy proteins being pursued as a potential therapeutic target. In this study, we investigated the expression of ATG4B in breast cancer, a heterogeneous disease comprised of several molecular subtypes. We examined a panel of breast cancer cell lines, xenograft tumors, and breast cancer patient specimens for the protein expression of ATG4B, and found a positive association between HER2 and ATG4B protein expression. We showed that HER2-positive cells, but not HER2-negative breast cancer cells, require ATG4B to survive under stress. In HER2-positive cells, cytoprotective autophagy was dependent on ATG4B under both starvation and HER2 inhibition conditions. Combined knockdown of ATG4B and HER2 by siRNA resulted in a significant decrease in cell viability, and the combination of ATG4B knockdown with trastuzumab resulted in a greater reduction in cell viability compared to trastuzumab treatment alone, in both trastuzumab-sensitive and -resistant HER2 overexpressing breast cancer cells. Together these results demonstrate a novel association of ATG4B positive expression with HER2 positive breast cancers and indicate that this subtype is suitable for emerging ATG4B inhibition strategies.
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24
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Butti R, Das S, Gunasekaran VP, Yadav AS, Kumar D, Kundu GC. Receptor tyrosine kinases (RTKs) in breast cancer: signaling, therapeutic implications and challenges. Mol Cancer 2018; 17:34. [PMID: 29455658 PMCID: PMC5817867 DOI: 10.1186/s12943-018-0797-x] [Citation(s) in RCA: 211] [Impact Index Per Article: 35.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Accepted: 02/01/2018] [Indexed: 12/19/2022] Open
Abstract
Breast cancer is a multifactorial disease and driven by aberrant regulation of cell signaling pathways due to the acquisition of genetic and epigenetic changes. An array of growth factors and their receptors is involved in cancer development and metastasis. Receptor Tyrosine Kinases (RTKs) constitute a class of receptors that play important role in cancer progression. RTKs are cell surface receptors with specialized structural and biological features which respond to environmental cues by initiating appropriate signaling cascades in tumor cells. RTKs are known to regulate various downstream signaling pathways such as MAPK, PI3K/Akt and JAK/STAT. These pathways have a pivotal role in the regulation of cancer stemness, angiogenesis and metastasis. These pathways are also imperative for a reciprocal interaction of tumor and stromal cells. Multi-faceted role of RTKs renders them amenable to therapy in breast cancer. However, structural mutations, gene amplification and alternate pathway activation pose challenges to anti-RTK therapy.
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Affiliation(s)
- Ramesh Butti
- Laboratory of Tumor Biology, Angiogenesis and Nanomedicine Research, National Centre for Cell Science, SP Pune University Campus, Pune, 411007, India
| | - Sumit Das
- Laboratory of Tumor Biology, Angiogenesis and Nanomedicine Research, National Centre for Cell Science, SP Pune University Campus, Pune, 411007, India
| | - Vinoth Prasanna Gunasekaran
- Laboratory of Tumor Biology, Angiogenesis and Nanomedicine Research, National Centre for Cell Science, SP Pune University Campus, Pune, 411007, India
| | - Amit Singh Yadav
- Laboratory of Tumor Biology, Angiogenesis and Nanomedicine Research, National Centre for Cell Science, SP Pune University Campus, Pune, 411007, India
| | - Dhiraj Kumar
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas, 77054, USA
| | - Gopal C Kundu
- Laboratory of Tumor Biology, Angiogenesis and Nanomedicine Research, National Centre for Cell Science, SP Pune University Campus, Pune, 411007, India.
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25
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Zhu HY, Bai WD, Ye XM, Yang AG, Jia LT. Long non-coding RNA UCA1 desensitizes breast cancer cells to trastuzumab by impeding miR-18a repression of Yes-associated protein 1. Biochem Biophys Res Commun 2018; 496:1308-1313. [PMID: 29408336 DOI: 10.1016/j.bbrc.2018.02.006] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Accepted: 02/01/2018] [Indexed: 11/30/2022]
Abstract
Breast cancer resistance to the monoclonal erbB2/HER2 antibody trastuzumab (or herceptin) has become a significant obstacle in clinical targeted therapy of HER2-positive breast cancer. Previous research demonstrated that such drug resistance may be related to dysregulation of miRNA expression. Here, we found that knockdown of the long non-coding RNA, urothelial cancer associated 1 (UCA1), can promote the sensitivity of human breast cancer cells to trastuzumab. Mechanistically, UCA1 knockdown upregulated miR-18a and promoted miR-18a repression of Yes-associated protein 1 (YAP1). A luciferase reporter assay confirmed the association of miR-18a with wild-type UCA1 but not with UCA1 mutated at the predicted miR-18a-binding site. The direct targeting of YAP1 by miR-18a was verified by the observation that miR-18a mimic suppressed luciferase expression from a construct containing the YAP1 3' untranslated region. Meanwhile, reciprocal repression of UCA1 and miR-18a were found to be Argonaute 2-dependent. Knockdown of YAP1 recapitulated the effect of UCA1 silencing by reducing the viability of trastuzumab-treated breast cancer cells, whereas inhibition of miR-18a abrogated UCA1 knockdown-induced improvement of trastuzumab sensitivity in breast cancer cells. These findings demonstrate that the UCA1/miR-18a/YAP1 axis plays an important role in regulating the sensitivity of breast cancer cells to trastuzumab, which has implications for the development of novel approaches to improving breast cancer responses to targeted therapy.
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Affiliation(s)
- Hua-Yu Zhu
- Department of Immunology, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Wen-Dong Bai
- Department of Immunology, Fourth Military Medical University, Xi'an, Shaanxi, China; Department of Clinical Laboratory Center, Xinjiang Command General Hospital of Chinese People's Liberation Army, Urumqi, Xinjiang, China
| | - Xing-Ming Ye
- Fujian Cancer Hospital & Fujian Medical University Cancer Hospital, Fuzhou, Fujian, China; State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular, Biology, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - An-Gang Yang
- Department of Immunology, Fourth Military Medical University, Xi'an, Shaanxi, China.
| | - Lin-Tao Jia
- State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular, Biology, Fourth Military Medical University, Xi'an, Shaanxi, China.
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A Novel Affibody-Auristatin E Conjugate With a Potent and Selective Activity Against HER2+ Cell Lines. J Immunother 2018; 39:223-32. [PMID: 27227324 DOI: 10.1097/cji.0000000000000125] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Targeted therapy is a new type of cancer treatment that most often uses biologically active drugs attached to a monoclonal antibody. This so called antibody-drug conjugate strategy allows the use of highly toxic substances that target tumor cells specifically, leaving healthy tissues largely unaffected. Over the last few years, antibody-drug conjugates have become a powerful tool in cancer treatment. We developed and characterized a novel cytotoxic conjugate against HER2 tumors in which the antibody has been substituted with a much smaller molecule: the affibody. The conjugate is composed of the ZHER2:2891 affibody that recognizes HER2 and a highly potent cytotoxic drug auristatin E. The ZHER2:2891 molecule does not contain cysteine(s) in its amino acid sequence. We generated 3 variants of ZHER2:2891, each containing a single cysteine to allow conjugation through the maleimide group that is present in the cytotoxic component. In 2 variants, we introduced single S46C and D53C substitutions. In the third variant, a short Drug Conjugation Sequence (DCS) containing a single cysteine was introduced at the C-terminus of ZHER2:2891, resulting in ZHER2:2891-DCS. The latter variant exhibited a significantly higher conjugation yield, and therefore its cytotoxicity has been studied more thoroughly. The ZHER2:2891-DCS-MMAE conjugate killed the HER2-overexpressing SK-BR-3 and MDA-MB-453 cells efficiently (IC50 values of 5.2 and 24.8 nM, respectively). The T-47-D and MDA-MB-231 cells that express normal levels of HER2 were significantly less sensitive to the conjugate (IC50 values of 135.6 and 161.5 nM, respectively). Overall, we have demonstrated for the first time that proteins other than antibodies/antibody fragments can be successfully combined with a linker-drug module, resulting in conjugates that eliminate cancer cells selectively.
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27
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GRB7 Expression and Correlation With HER2 Amplification in Invasive Breast Carcinoma. Appl Immunohistochem Mol Morphol 2017; 25:553-558. [DOI: 10.1097/pai.0000000000000349] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Sochaj-Gregorczyk AM, Ludzia P, Kozdrowska E, Jakimowicz P, Sokolowska-Wedzina A, Otlewski J. Design and In Vitro Evaluation of a Cytotoxic Conjugate Based on the Anti-HER2 Affibody Fused to the Fc Fragment of IgG1. Int J Mol Sci 2017; 18:ijms18081688. [PMID: 28771178 PMCID: PMC5578078 DOI: 10.3390/ijms18081688] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 07/27/2017] [Accepted: 07/31/2017] [Indexed: 01/14/2023] Open
Abstract
In our previous work we demonstrated that a small protein called affibody can be used for a cytotoxic conjugate development. The anti-HER2 affibody was armed with one moiety of a highly potent auristatin E and specifically killed HER2-positive cancer cells with a nanomolar IC50. The aim of this study was to improve the anti-HER2 affibody conjugate by increasing its size and the number of conjugated auristatin molecules. The affibody was fused to the Fc fragment of IgG1 resulting in a dimeric construct with the molecular weight of 68 kDa, referred to as ZHER2:2891-Fc, ensuring its prolonged half-life in the blood. Due to the presence of four interchain cysteines, the fusion protein could carry four drug molecules. Notably, the in vitro tests of the improved anti-HER2 conjugate revealed that it exhibits the IC50 of 130 pM for the HER2-positive SK-BR-3 cells and 98 nM for the HER2-negative MDA-MB-231 cells. High efficacy and specificity of the auristatin conjugate based on ZHER2:2891-Fc indicate that this construct is suitable for further in vivo evaluation.
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Affiliation(s)
- Alicja M Sochaj-Gregorczyk
- Department of Protein Engineering, Faculty of Biotechnology, University of Wroclaw, 50-383 Wroclaw, Poland.
| | - Patryk Ludzia
- Department of Protein Engineering, Faculty of Biotechnology, University of Wroclaw, 50-383 Wroclaw, Poland.
| | - Emilia Kozdrowska
- Department of Protein Engineering, Faculty of Biotechnology, University of Wroclaw, 50-383 Wroclaw, Poland.
| | - Piotr Jakimowicz
- Department of Protein Biotechnology, Faculty of Biotechnology, University of Wroclaw, 50-383 Wroclaw, Poland.
| | | | - Jacek Otlewski
- Department of Protein Engineering, Faculty of Biotechnology, University of Wroclaw, 50-383 Wroclaw, Poland.
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Ye F, Zhong X, Qiu Y, Yang L, Wei B, Zhang Z, Bu H. CD49f Can Act as a Biomarker for Local or Distant Recurrence in Breast Cancer. J Breast Cancer 2017; 20:142-149. [PMID: 28690650 PMCID: PMC5500397 DOI: 10.4048/jbc.2017.20.2.142] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2016] [Accepted: 12/05/2016] [Indexed: 02/05/2023] Open
Abstract
Purpose Metastasis and local recurrence are the primary causes of treatment failure and patient death in breast cancer. The aim of this study was to validate a metastasis- and local recurrenceassociated biomarker for prognostic evaluation and planning treatment strategies. Methods Formalin-fixed, paraffin-embedded tissues from a cohort of 312 patients (all stage II and III) were used. The prevalence of CD49f+ cells in the patients' tumors was analyzed and correlated with clinical characteristics to determine its prognostic and clinical implications. Results CD49f+ tumor cells were found in a minority of tumors, with 62.8% of the samples showing not a single cell of this subtype. In the clinical characteristics analysis, which were performed with t-tests, CD49f+ tumors were not associated with age, tumor size, World Health Organization grade, nodal status, human epidermal growth factor receptor 2 status, progesterone receptor status, or estrogen receptor status, although they were significantly associated with disease recurrence (distant metastasis or/and local recurrence). Univariate survival analysis using the Kaplan-Meier method showed that CD49f+ tumors were associated with markedly decreased disease-free survival (DFS); the same result was found using multivariate Cox analysis, even when only chemotherapy-treated patients were analyzed. Conclusion Our results indicated that breast tumors with CD49f+ cancer cells are associated with an increased risk for disease recurrence after initial surgery with poor clinical outcomes (decreased DFS). Therefore, as it requires testing for only one additional protein, adding CD49f testing to conventional surgical pathology is a strategy that has great potential for prognostic and treatment-guidance purposes.
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Affiliation(s)
- Feng Ye
- Laboratory of Pathology, State Key Laboratory of Biotherapy, National Collaborative Innovation Center for Biotherapy, Chengdu, China
| | - Xiaorong Zhong
- Cancer Center, State Key Laboratory of Biotherapy, National Collaborative Innovation Center for Biotherapy, Chengdu, China.,Laboratory of Molecular Diagnosis of Cancer, State Key Laboratory of Biotherapy, National Collaborative Innovation Center for Biotherapy, Chengdu, China
| | - Yan Qiu
- Department of Pathology, West China Hospital, Sichuan University, Chengdu, China
| | - Libo Yang
- Department of Pathology, West China Hospital, Sichuan University, Chengdu, China
| | - Bing Wei
- Department of Pathology, West China Hospital, Sichuan University, Chengdu, China
| | - Zhang Zhang
- Department of Pathology, West China Hospital, Sichuan University, Chengdu, China
| | - Hong Bu
- Department of Pathology, West China Hospital, Sichuan University, Chengdu, China
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30
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Xu F, Sunderland A, Zhou Y, Schulick RD, Edil BH, Zhu Y. Blockade of CD112R and TIGIT signaling sensitizes human natural killer cell functions. Cancer Immunol Immunother 2017. [PMID: 28623459 DOI: 10.1007/s00262-017-2031-x] [Citation(s) in RCA: 104] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Trastuzumab is the first-line drug to treat breast cancer with high Her2 expression. However, many cancers failed to respond, largely due to their resistance to NK cell-triggered antibody-dependent cellular cytotoxicity (ADCC). Poliovirus receptor (PVR)-like molecules are known to be important for lymphocyte functions. We found that all PVR-like receptors are expressed on human NK cells, and only TIGIT is preferentially expressed on the CD16+ NK cell subset. Disrupting the interactions of PVR-like receptors with their ligands on cancer cells regulates NK cell activity. More importantly, TIGIT is upregulated upon NK cell activation via ADCC. Blockade of TIGIT or CD112R, separately or together, enhances trastuzumab-triggered antitumor response by human NK cells. Thus, our findings suggest that PVR-like receptors regulate NK cell functions and can be targeted for improving trastuzumab therapy for breast cancer.
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Affiliation(s)
- Feng Xu
- Department of Surgery, University of Colorado Anschutz Medical Campus, RC1-North Building, P18-8116, Aurora, CO, 80045, USA.,Department of Hepatobiliary and Splenic Surgery, Shengjing Hospital, China Medical University, Shenyang, 110004, Liaoning, China
| | - Alexander Sunderland
- Department of Surgery, University of Colorado Anschutz Medical Campus, RC1-North Building, P18-8116, Aurora, CO, 80045, USA
| | - Yue Zhou
- Department of Surgery, University of Colorado Anschutz Medical Campus, RC1-North Building, P18-8116, Aurora, CO, 80045, USA.,Department of Hepatobiliary and Pancreatic Surgery, Second Affiliated Hospital, Zhejiang University, Hangzhou, 310027, China
| | - Richard D Schulick
- Department of Surgery, University of Colorado Anschutz Medical Campus, RC1-North Building, P18-8116, Aurora, CO, 80045, USA
| | - Barish H Edil
- Department of Surgery, University of Colorado Anschutz Medical Campus, RC1-North Building, P18-8116, Aurora, CO, 80045, USA
| | - Yuwen Zhu
- Department of Surgery, University of Colorado Anschutz Medical Campus, RC1-North Building, P18-8116, Aurora, CO, 80045, USA.
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31
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Maximiano S, Magalhães P, Guerreiro MP, Morgado M. Trastuzumab in the Treatment of Breast Cancer. BioDrugs 2016; 30:75-86. [PMID: 26892619 DOI: 10.1007/s40259-016-0162-9] [Citation(s) in RCA: 126] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Breast cancer (BC) is the most common cancer in women worldwide, and has an undeniable negative impact on public health. The advent of molecular biology and immunotherapy has made targeted therapeutic interventions possible, providing treatments tailored to the individual characteristics of the patient and the disease. The over-expression of human epidermal growth factor receptor (HER) 2 is implicated in the pathophysiology of BC and represents a clinically relevant biomarker for its treatment. Trastuzumab, a recombinant antibody targeting HER2, was the first biological drug approved for the treatment of HER2-positive BC. Although there are currently other anti-HER2 agents available (e.g. pertuzumab and lapatinib), trastuzumab remains the gold standard for treatment of this disease subtype. Nonetheless, concerns have been raised regarding potential cardiotoxicity and treatment resistance. Moreover, several other therapeutic issues remain unclear and have been addressed in an inconsistent way. The current literature lacks a comprehensive review of trastuzumab providing useful information for clinical practice, including pharmacokinetic and pharmacodynamic aspects, its clinical use, existing controversies and future advances. This detailed review of trastuzumab in the pharmacotherapy of BC attempts to fill this gap.
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Affiliation(s)
- Sofia Maximiano
- CICS-UBI, Health Sciences Research Centre, University of Beira Interior, Av. Infante D. Henrique, Covilhã, Portugal
| | - Paulo Magalhães
- CICS-UBI, Health Sciences Research Centre, University of Beira Interior, Av. Infante D. Henrique, Covilhã, Portugal.,Laboratory of Pharmacology, Faculty of Pharmacy, University of Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, Coimbra, Portugal.,CNC, Centre for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal.,CICAB, Clinical Research Centre, Extremadura University Hospital and Medical School, Badajoz, Spain
| | - Mara Pereira Guerreiro
- Lisbon Nursing School (ESEL), Lisbon, Portugal.,CiiEM, Institute of Health Sciences Egas Moniz (ISCSEM), Monte de Caparica, Portugal
| | - Manuel Morgado
- CICS-UBI, Health Sciences Research Centre, University of Beira Interior, Av. Infante D. Henrique, Covilhã, Portugal. .,Cova da Beira Hospital Centre, E.P.E., Quinta do Alvito, 6200-251, Covilhã, Portugal.
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32
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Malecki M, Sabo C, Foorohar A, Tombokan X. Novel paradigm for immunotherapy of breast cancer by engaging prophylactic immunity against hepatitis B. Clin Transl Med 2016; 5:32. [PMID: 27539579 PMCID: PMC4990520 DOI: 10.1186/s40169-016-0111-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Accepted: 07/26/2016] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Immunotherapy of patients suffering from the human epidermal growth factor receptor 2 overexpressing (HER-2(+)) breast cancers with the anti-HER-2 antibodies results in increase of the patients' overall survival. However, no prophylactic vaccine is available against HER-2(+) breast cancers. Although, prophylactic vaccine for human hepatitis B virus (HBV) is very effective. SPECIFIC AIM The specific aim of this work was to design, synthesize, and test bio-molecules which would engage prophylactic immunity against hepatitis B virus towards killing breast cancers cells. METHODS AND RESULTS By biomolecular engineering, we have created a novel family of biomolecules: antibody (anti-HER-2) × vaccine (HBsAg) engineered constructs (AVEC: anti-HER-2 × HBsAg). These biomolecules were utilized for redirecting, accelerating, and amplifying of the vaccination-induced, prophylactic immunity originally targeted against HBV as therapeutic immunity, newly targeted against HER-2(+) breast cancers. Treatment of the HER-2(+) breast cancer cells with AVEC: anti-HER-2 × HBsAg in blood of the patients, vaccinated with HBsAg, rapidly increased efficacy of killing of HER-2(+) breast cancer cells over that attained with the naked anti-HER-2 antibodies. CONCLUSION Novel antibody-vaccine engineered constructs (AVEC) facilitate redirecting, accelerating, and amplifying of prophylactic, HBV vaccination-induced immunity as immunotherapy (RAAVIIT) of HER-2(+) breast cancer. We currently streamline this novel therapeutic paradigm into clinical trials of breast and other cancers.
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Affiliation(s)
- Marek Malecki
- Phoenix Biomolecular Engineering Foundation, San Francisco, CA USA
- University of Wisconsin, Madison, WI USA
- National Magnetic Resonance Facility, National Institutes of Health, Madison, WI USA
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Rodríguez-Serrano F, Mut-Salud N, Cruz-Bustos T, Gomez-Samblas M, Carrasco E, Garrido JM, López-Jaramillo FJ, Santoyo-Gonzalez F, Osuna A. Functionalized immunostimulating complexes with protein A via lipid vinyl sulfones to deliver cancer drugs to trastuzumab-resistant HER2-overexpressing breast cancer cells. Int J Nanomedicine 2016; 11:4777-4785. [PMID: 27698563 PMCID: PMC5034911 DOI: 10.2147/ijn.s112560] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Background Around 20%–30% of breast cancers overexpress the proto-oncogene human epidermal growth receptor 2 (HER2), and they are characterized by being very invasive. Therefore, many current studies are focused on testing new therapies against tumors that overexpress this receptor. In particular, there exists major interest in new strategies to fight breast cancer resistant to trastuzumab (Tmab), a humanized antibody that binds specifically to HER2 interfering with its mitogenic signaling. Our team has previously developed immunostimulating complexes (ISCOMs) as nanocapsules functionalized with lipid vinyl sulfones, which can incorporate protein A and bind to G immunoglobulins that makes them very flexible nanocarriers. Methods and results The aim of this in vitro study was to synthesize and evaluate a drug delivery system based on protein A-functionalized ISCOMs to target HER2-overexpressing cells. We describe the preparation of ISCOMs, the loading with the drugs doxorubicin and paclitaxel, the binding of ISCOMs to alkyl vinyl sulfone-protein A, the coupling of Tmab, and the evaluation in both HER2-overexpressing breast cancer cells (HCC1954) and non-overexpressing cells (MCF-7) by flow cytometry and fluorescence microscopy. Results show that the uptake is dependent on the level of overexpression of HER2, and the analysis of the cell viability reveals that targeted drugs are selective toward HCC1954, whereas MCF-7 cells remain unaffected. Conclusion Protein A-functionalized ISCOMs are versatile carriers that can be coupled to antibodies that act as targeting agents to deliver drugs. When coupling to Tmab and loading with paclitaxel or doxorubicin, they become efficient vehicles for the selective delivery of the drug to Tmab-resistant HER2-overexpressing breast cancer cells. These nanoparticles may pave the way for the development of novel therapies for poor prognosis resistant patients.
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Affiliation(s)
| | | | - Teresa Cruz-Bustos
- Molecular Biochemistry and Parasitology Research Group, Department of Parasitology, Faculty of Sciences, Institute of Biotechnology, University of Granada
| | - Mercedes Gomez-Samblas
- Molecular Biochemistry and Parasitology Research Group, Department of Parasitology, Faculty of Sciences, Institute of Biotechnology, University of Granada
| | | | | | - F Javier López-Jaramillo
- Department of Organic Chemistry, Faculty of Sciences, Institute of Biotechnology, University of Granada, Granada, Spain
| | - Francisco Santoyo-Gonzalez
- Department of Organic Chemistry, Faculty of Sciences, Institute of Biotechnology, University of Granada, Granada, Spain
| | - Antonio Osuna
- Molecular Biochemistry and Parasitology Research Group, Department of Parasitology, Faculty of Sciences, Institute of Biotechnology, University of Granada
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Hwang W, Choi J, Kwon M, Lee D. Context-specific functional module based drug efficacy prediction. BMC Bioinformatics 2016; 17 Suppl 6:275. [PMID: 27490093 PMCID: PMC4965733 DOI: 10.1186/s12859-016-1078-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
Background It is necessary to evaluate the efficacy of individual drugs on patients to realize personalized medicine. Testing drugs on patients in clinical trial is the only way to evaluate the efficacy of drugs. The approach is labour intensive and requires overwhelming costs and a number of experiments. Therefore, preclinical model system has been intensively investigated for predicting the efficacy of drugs. Current computational drug sensitivity prediction approaches use general biological network modules as their prediction features. Therefore, they miss indirect effectors or the effects from tissue-specific interactions. Results We developed cell line specific functional modules. Enriched scores of functional modules are utilized as cell line specific features to predict the efficacy of drugs. Cell line specific functional modules are clusters of genes, which have similar biological functions in cell line specific networks. We used linear regression for drug efficacy prediction. We assessed the prediction performance in leave-one-out cross-validation (LOOCV). Our method was compared with elastic net model, which is a popular model for drug efficacy prediction. In addition, we analysed drug sensitivity-associated functions of five drugs - lapatinib, erlotinib, raloxifene, tamoxifen and gefitinib- by our model. Conclusions Our model can provide cell line specific drug efficacy prediction and also provide functions which are associated with drug sensitivity. Therefore, we could utilize drug sensitivity associated functions for drug repositioning or for suggesting secondary drugs for overcoming drug resistance. Electronic supplementary material The online version of this article (doi:10.1186/s12859-016-1078-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Woochang Hwang
- Department of Bio and Brain Engineering, 291 Daehak-ro, Yuseong-gu, Daejeon, Republic of Korea.,Bio-Synergy Research Center, 291 Daehak-ro, Yuseong-gu, Daejeon, Republic of Korea
| | - Jaejoon Choi
- Department of Bio and Brain Engineering, 291 Daehak-ro, Yuseong-gu, Daejeon, Republic of Korea
| | - Mijin Kwon
- Department of Bio and Brain Engineering, 291 Daehak-ro, Yuseong-gu, Daejeon, Republic of Korea
| | - Doheon Lee
- Department of Bio and Brain Engineering, 291 Daehak-ro, Yuseong-gu, Daejeon, Republic of Korea. .,Bio-Synergy Research Center, 291 Daehak-ro, Yuseong-gu, Daejeon, Republic of Korea.
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Frequent detection of PIK3CA mutations in single circulating tumor cells of patients suffering from HER2-negative metastatic breast cancer. Mol Oncol 2016; 10:1330-43. [PMID: 27491860 DOI: 10.1016/j.molonc.2016.07.005] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Revised: 05/27/2016] [Accepted: 07/15/2016] [Indexed: 02/07/2023] Open
Abstract
Modern technologies enable detection and characterization of circulating tumor cells (CTC) in peripheral blood samples. Thus, CTC have attracted interest as markers for therapeutic response in breast cancer. First studies have incorporated CTC analyses to guide therapeutic interventions and stratification of breast cancer patients. Aim of this study was to analyze characteristic features of CTC as biomarker for predicting resistance to HER2-targeted therapies. Therefore, CTC from metastatic breast cancer patients with HER2-negative primary tumors screened for the prospective randomized phase III trial DETECT III were explored for their HER2 status and the presence of PIK3CA mutations. Detection and characterization of HER2 expression of CTC were conducted with the CellSearch(®) system. Fifteen of 179 CTC-positive patients (8.4%) contained ≥1 CTC with strong HER2 expression. Genomic DNA from individual CTC isolated by micromanipulation was propagated by whole genome amplification and analyzed for PIK3CA mutations in exons 9 and 20 by Sanger sequencing. One or more CTC/7.5 mL were detected in 179/290 patients (61.7%). In 109 patients (34.8%), ≥5 CTC/7.5 mL were found. We detected at least one CTC with the mutation p.E542K, p.E545K, p.H1047R, p.H1047L or p.M1043V in 12/33 patients (36.4%). Thirty six of 114 CTC (31.6%) harbored one of these mutations. CTC in individual patients exhibited heterogeneity concerning PIK3CA mutations and HER2 expression. In conclusion, clinically relevant genomic aberrations such as mutations in the hotspot regions of exon 9 and 20 of the PIK3CA gene can be detected in single CTC and might provide insights into mechanisms of resistance to HER2-targeted therapies.
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Gautam A, Chaudhary K, Kumar R, Gupta S, Singh H, Raghava GPS. Managing Drug Resistance in Cancer: Role of Cancer Informatics. Methods Mol Biol 2016; 1395:299-312. [PMID: 26910081 DOI: 10.1007/978-1-4939-3347-1_17] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Understanding and managing cancer drug resistance is the main goal of the modern oncology programs worldwide. One of the major factors contributing to drug resistance in cancer cells is the acquired mutations in drug targets. Advances in sequencing technologies and high-throughput screening assays have generated huge information related to pharmaco-profiling of anticancer drugs and revealed the mutational spectrum of different cancers. Systematic meta-analysis of this complex data is very essential to make useful conclusions in order to manage cancer drug resistance. Bioinformatics can play a significant role to interpret this complex data into useful conclusions. In this chapter, the use of bioinformatics platforms, particularly CancerDR, in understanding the cancer drug resistance is described.
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Affiliation(s)
- Ankur Gautam
- Bioinformatics Centre, CSIR-Institute of Microbial Technology, Sector 39A, Chandigarh, 160036, India
| | - Kumardeep Chaudhary
- Bioinformatics Centre, CSIR-Institute of Microbial Technology, Sector 39A, Chandigarh, 160036, India
| | - Rahul Kumar
- Bioinformatics Centre, CSIR-Institute of Microbial Technology, Sector 39A, Chandigarh, 160036, India
| | - Sudheer Gupta
- Bioinformatics Centre, CSIR-Institute of Microbial Technology, Sector 39A, Chandigarh, 160036, India
| | - Harinder Singh
- Bioinformatics Centre, CSIR-Institute of Microbial Technology, Sector 39A, Chandigarh, 160036, India
| | - Gajendra P S Raghava
- Bioinformatics Centre, CSIR-Institute of Microbial Technology, Sector 39A, Chandigarh, 160036, India.
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Hajighasemlou S, Alebouyeh M, Rastegar H, Manzari MT, Mirmoghtadaei M, Moayedi B, Ahmadzadeh M, Parvizpour F, Johari B, Naeini MM, Farajollahi MM. Preparation of Immunotoxin Herceptin-Botulinum and Killing Effects on Two Breast Cancer Cell Lines. Asian Pac J Cancer Prev 2015; 16:5977-81. [DOI: 10.7314/apjcp.2015.16.14.5977] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Chen BJ, Litvin O, Ungar L, Pe’er D. Context Sensitive Modeling of Cancer Drug Sensitivity. PLoS One 2015; 10:e0133850. [PMID: 26274927 PMCID: PMC4537214 DOI: 10.1371/journal.pone.0133850] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Accepted: 07/03/2015] [Indexed: 12/19/2022] Open
Abstract
Recent screening of drug sensitivity in large panels of cancer cell lines provides a valuable resource towards developing algorithms that predict drug response. Since more samples provide increased statistical power, most approaches to prediction of drug sensitivity pool multiple cancer types together without distinction. However, pan-cancer results can be misleading due to the confounding effects of tissues or cancer subtypes. On the other hand, independent analysis for each cancer-type is hampered by small sample size. To balance this trade-off, we present CHER (Contextual Heterogeneity Enabled Regression), an algorithm that builds predictive models for drug sensitivity by selecting predictive genomic features and deciding which ones should-and should not-be shared across different cancers, tissues and drugs. CHER provides significantly more accurate models of drug sensitivity than comparable elastic-net-based models. Moreover, CHER provides better insight into the underlying biological processes by finding a sparse set of shared and type-specific genomic features.
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Affiliation(s)
- Bo-Juen Chen
- Department of Biomedical Informatics, Columbia University, New York, New York, 10032, United States of America
- Department of Biological Sciences, Department of Systems Biology, Columbia University, New York, New York, 10027, United States of America
| | - Oren Litvin
- Department of Biological Sciences, Department of Systems Biology, Columbia University, New York, New York, 10027, United States of America
| | - Lyle Ungar
- Computer and Information Science, University of Pennsylvania, Philadelphia, Pennsylvania, 19104, United States of America
| | - Dana Pe’er
- Department of Biological Sciences, Department of Systems Biology, Columbia University, New York, New York, 10027, United States of America
- * E-mail:
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39
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Ngamcherdtrakul W, Morry J, Gu S, Castro DJ, Goodyear SM, Sangvanich T, Reda MM, Lee R, Mihelic SA, Beckman BL, Hu Z, Gray JW, Yantasee W. Cationic Polymer Modified Mesoporous Silica Nanoparticles for Targeted SiRNA Delivery to HER2+ Breast Cancer. ADVANCED FUNCTIONAL MATERIALS 2015; 25:2646-2659. [PMID: 26097445 PMCID: PMC4469082 DOI: 10.1002/adfm.201404629] [Citation(s) in RCA: 123] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
In vivo delivery of siRNAs designed to inhibit genes important in cancer and other diseases continues to be an important biomedical goal. We now describe a new nanoparticle construct that has been engineered for efficient delivery of siRNA to tumors. The construct is comprised of a 47-nm mesoporous silica nanoparticle (MSNP) core coated with a cross-linked PEI-PEG copolymer, carrying siRNA against the HER2 oncogene, and coupled to the anti-HER2 monoclonal antibody (trastuzumab). The construct has been engineered to increase siRNA blood half-life, enhance tumor-specific cellular uptake, and maximize siRNA knockdown efficacy. The optimized anti-HER2-nanoparticles produced apoptotic death in HER2 positive (HER2+) breast cancer cells grown in vitro, but not in HER2 negative (HER2-) cells. One dose of the siHER2-nanoparticles reduced HER2 protein levels by 60% in trastuzumab-resistant HCC1954 xenografts. Multiple doses administered intravenously over 3 weeks significantly inhibited tumor growth (p < 0.004). The siHER2-nanoparticles have an excellent safety profile in terms of blood compatibility and low cytokine induction, when exposed to human peripheral blood mononuclear cells. The construct can be produced with high batch-to-batch reproducibility and the production methods are suitable for large-scale production. These results suggest that this siHER2-nanoparticle is ready for clinical evaluation.
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Affiliation(s)
- Worapol Ngamcherdtrakul
- Department of Biomedical Engineering, Oregon Health & Science University 3303 SW Bond Ave, Portland, OR 97239
| | - Jingga Morry
- Department of Biomedical Engineering, Oregon Health & Science University 3303 SW Bond Ave, Portland, OR 97239
| | - Shenda Gu
- Department of Biomedical Engineering, Oregon Health & Science University 3303 SW Bond Ave, Portland, OR 97239
| | - David J. Castro
- Department of Biomedical Engineering, Oregon Health & Science University 3303 SW Bond Ave, Portland, OR 97239
- PDX Pharmaceuticals 24 Independence Ave, Lake Oswego, OR 97035
| | - Shaun M. Goodyear
- Department of Biomedical Engineering, Oregon Health & Science University 3303 SW Bond Ave, Portland, OR 97239
| | - Thanapon Sangvanich
- Department of Biomedical Engineering, Oregon Health & Science University 3303 SW Bond Ave, Portland, OR 97239
| | - Moataz M. Reda
- Department of Biomedical Engineering, Oregon Health & Science University 3303 SW Bond Ave, Portland, OR 97239
| | - Richard Lee
- Department of Biomedical Engineering, Oregon Health & Science University 3303 SW Bond Ave, Portland, OR 97239
| | - Samuel A. Mihelic
- Department of Biomedical Engineering, Oregon Health & Science University 3303 SW Bond Ave, Portland, OR 97239
| | - Brandon L. Beckman
- Department of Biomedical Engineering, Oregon Health & Science University 3303 SW Bond Ave, Portland, OR 97239
| | - Zhi Hu
- Department of Biomedical Engineering, Oregon Health & Science University 3303 SW Bond Ave, Portland, OR 97239
| | - Joe W. Gray
- Department of Biomedical Engineering, Oregon Health & Science University 3303 SW Bond Ave, Portland, OR 97239
| | - Wassana Yantasee
- Department of Biomedical Engineering, Oregon Health & Science University 3303 SW Bond Ave, Portland, OR 97239
- PDX Pharmaceuticals 24 Independence Ave, Lake Oswego, OR 97035
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40
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The investigation of miR-221-3p and PAK1 gene expressions in breast cancer cell lines. Gene 2015; 555:377-81. [DOI: 10.1016/j.gene.2014.11.036] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Revised: 11/13/2014] [Accepted: 11/14/2014] [Indexed: 11/23/2022]
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