1
|
Khodadadi E, Panjepour M, Abbasian M, Broujeni ZK, Mofid MR. Cloning and expression of full-length human insulin-like growth factor binding protein 3 (IGFBP3) in the Escherichia coli. Adv Biomed Res 2015; 4:66. [PMID: 25878991 PMCID: PMC4386200 DOI: 10.4103/2277-9175.153886] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2014] [Accepted: 06/11/2014] [Indexed: 01/31/2023] Open
Abstract
Background: The effect of the growth hormone on target cells is mediated by the insulin-like growth factor 1 (IGF-1). IGF-1 binds to the insulin-like growth factor binding proteins (IGFBPs) in blood and biological fluids. Considering the important application of IGBP3 as a drug component, in this research we cloned and expressed the full-length IGFBP3 in the pET-11a vector and BL21 (DE3) expression host. Materials and Methods: First the sequence encoding of IGFBP3 was designed based on the amino acid sequence of the protein and then by codon optimization, in order to ensure the maximum expression in Escherichia coli. In the next step, the synthetic DNA encoding IGFBP3 was inserted into the pUC57 vector, at the appropriate restriction sites and then subcloned in the pET-11a expression vector in the same restriction sites. The constructed vector was transformed to E. coli BL21 as an expression host and induced in the presence of IPTG for expression of the IGFBP3 protein. Protein expression was evaluated by sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE). Results: Double digestion of the new plasmid (pET-11a -IGBP3) with NdeI and BamHI showed two bands in 873 bp and 5700 bp. To study the accurate cloning procedure, the plasmid was sequenced and its authenticity was confirmed. Also the expected protein band (31.6 kDa) was observed in SDS-PAGE analysis. Conclusion: DNA fragment encoding the full-length IGFBP3 protein was accurately cloned in the pET-11a expression vector and the recombinant plasmid transformed to E. coli BL21 (DE3) expression host. Results of the SDS-PAGE analysis verified that recombinant IGFBP3 (31.6 kDa) are successfully expressed under the control of T7 promoter. As we shown pET-11a can be successfully used for expression of the IGFBP3 protein.
Collapse
Affiliation(s)
- Emad Khodadadi
- Department of Biochemistry, School of Pharmacy, Bioinformatics Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mojtaba Panjepour
- Department of Biochemistry, School of Pharmacy, Bioinformatics Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mahdi Abbasian
- Department of Biochemistry, School of Pharmacy, Bioinformatics Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Zahra Khalili Broujeni
- Department of Biochemistry, School of Pharmacy, Bioinformatics Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mohammad Reza Mofid
- Department of Biochemistry, School of Pharmacy, Bioinformatics Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| |
Collapse
|
2
|
Luk F, Yu Y, Walsh WR, Yang JL. IGF1R-targeted therapy and its enhancement of doxorubicin chemosensitivity in human osteosarcoma cell lines. Cancer Invest 2011; 29:521-32. [PMID: 21843050 DOI: 10.3109/07357907.2011.606252] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Type-I insulin-like growth factor receptor (IGF1R) and its signaling play an important role in osteosarcomagenesis, tumor progression, and chemoresistance. The purpose of this study was to investigate both the effect and mechanisms of IGF1R inhibition by tyrphostin AG1024 in the presence or absence of doxorubicin in a panel of six osteosarcoma cell lines and a self-established doxorubicin-resistant cell line. We are the first to indicate that targeting IGF1R together with doxorubicin achieved additive anti-osteosarcoma growth effect, accompanied with increased apoptosis, cytotoxicity, and dual cell cycle arrests. In conclusion, IGF1R inhibition can enhance doxorubicin chemotherapy in some osteosarcoma cell lines.
Collapse
Affiliation(s)
- Frederick Luk
- Surgical & Orthopaedics Research, University of New South Wales, Sydney, Australia
| | | | | | | |
Collapse
|
3
|
Stromal expression of β-arrestin-1 predicts clinical outcome and tamoxifen response in breast cancer. J Mol Diagn 2011; 13:340-51. [PMID: 21497294 DOI: 10.1016/j.jmoldx.2011.01.009] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2010] [Revised: 12/28/2010] [Accepted: 01/31/2011] [Indexed: 12/28/2022] Open
Abstract
The G-protein coupled receptor associated protein β-arrestin-1 is crucial for the regulation of numerous biological processes involved in cancer progression, such as intracellular signaling and cell motility. The encoding gene ARRB1 is harbored in the same chromosomal region as the CCND1 gene (11q13). Amplification of CCND1, frequently encountered in breast cancer, often involves coamplification of additional oncogenes, as well as deletion of distal 11q genes. We investigated the clinical relevance of β-arrestin-1 in breast cancer and elucidated a potential link between β-arrestin-1 expression and CCND1 amplification. β-Arrestin-1 protein expression was evaluated in two breast cancer patient cohorts, comprising 179 patients (cohort I) and 500 patients randomized to either tamoxifen or no adjuvant treatment (cohort II). Additionally, migration after β-arrestin-1 overexpression or silencing was monitored in two breast cancer cell lines. Overexpression of β-arrestin-1 reduced the migratory propensity of both cell lines, whereas silencing increased migration. In cohort I, high expression of stromal β-arrestin-1 was linked to reduced patient survival, whereas in cohort II both high and absent stromal expression predicted a poor clinical outcome. Patients exhibiting low or moderate levels of stromal β-arrestin-1 did not benefit from tamoxifen, in contrast to patients exhibiting absent or high expression. Furthermore, CCND1 amplification was inversely correlated with tumor cell expression of β-arrestin-1, indicating ARRB1 gene deletion in CCND1-amplified breast cancers.
Collapse
|
4
|
Discovery of 2,4-bis-arylamino-1,3-pyrimidines as insulin-like growth factor-1 receptor (IGF-1R) inhibitors. Bioorg Med Chem Lett 2011; 21:2394-9. [PMID: 21414779 DOI: 10.1016/j.bmcl.2011.02.075] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2010] [Revised: 02/16/2011] [Accepted: 02/17/2011] [Indexed: 11/22/2022]
Abstract
The insulin-like growth factor-1 receptor (IGF-1R) plays an important role in the regulation of cell growth and differentiation, and in protection from apoptosis. IGF-1R has been shown to be an appealing target for the treatment of human cancer. Herein, we report the synthesis, structure-activity relationships (SAR), X-ray cocrystal structure and in vivo tumor study results for a series of 2,4-bis-arylamino-1,3-pyrimidines.
Collapse
|
5
|
Giordano TJ. Classification of adrenal cortical tumors: promise of the 'molecular' approach. Best Pract Res Clin Endocrinol Metab 2010; 24:887-92. [PMID: 21115157 DOI: 10.1016/j.beem.2010.10.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Surgical pathologists, using routine histological techniques and tumor morphology, have established the overall taxonomy of adrenal cortical tumors that dictates care of patients with these tumors. However, a novel molecular classification of these tumors would provide numerous benefits to clinicians and patients, including a more accurate classification of diagnostically intermediate tumors, separation of carcinomas into prognostically-relevant subgroups, and optimal selection of therapy. Recent advances towards a molecular classification of adrenal cortical tumors are presented and discussed.
Collapse
Affiliation(s)
- Thomas J Giordano
- University of Michigan Medical School, Department of Pathology, MSRB2, C570D, Ann Arbor, MI 48109, United States.
| |
Collapse
|
6
|
Naik VM, Naik MN, Goldberg RA, Smith TJ, Douglas RS. Immunopathogenesis of thyroid eye disease: emerging paradigms. Surv Ophthalmol 2010; 55:215-26. [PMID: 20385333 DOI: 10.1016/j.survophthal.2009.06.009] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2009] [Revised: 06/20/2009] [Accepted: 06/23/2009] [Indexed: 12/22/2022]
Abstract
Graves disease represents a systemic autoimmune process targeting the thyroid, orbit, and pretibial skin. The thyroid dysfunction is treatable, but no consistently effective medical therapy has yet been described for the orbital manifestations of Graves disease, also known as thyroid-associated ophthalmopathy or thyroid eye disease. Several autoantigens are potentially relevant to the pathogenesis of thyroid eye disease. Activating antibodies generated against the thyrotropin receptor can be detected in a majority of patients, and these drive hyperthyroidism. However, stimulating antibodies against the insulin-like growth factor-1 receptor (IGF-1R) may also play a role in the extra-thyroid manifestations of Graves disease. IGF-1R is overexpressed by orbital fibroblasts derived from patients with thyroid eye disease, whereas IGF-1R(+) T and IGF-1R(+) B cells are considerably more frequent in Graves disease. Actions of several cytokines and the molecular interplay peculiar to the orbit appear to provoke the inflammation, fat expansion, and deposition of excessive extracellular matrix molecules in thyroid eye disease. Based upon these new insights, several therapeutic strategies can now be proposed that, for the first time, might specifically interrupt its pathogenesis.
Collapse
|
7
|
Abstract
Growth factors are low molecular peptides active in the stimulation of cell proliferation and in the regulation of embryonic development and cellular differentiation. Significant progress has been made in developing effective strategies to treat human malignancies with new chemical compounds based on a rationale directed against various components of signaling pathways. Many of these drugs target a growth factor receptor--for instance, in the form of monoclonal antibodies or inhibitors of tyrosine kinases, such as monoclonal antibodies against epidermal growth factor receptors used in treating certain types of breast cancer. Imatinib mesylate [Gleevec]) is an excellent example of mediators of signal transduction, such as tyrosine kinases. Growth factors proper are used to ameliorate various and sometimes fatal side effects of cytotoxic and/or myelosuppressive chemotherapy. Basic characteristics of several growth families are discussed with therapeutic modalities based on growth factor activity or, more often, inhibition of such activity.
Collapse
Affiliation(s)
- J Halper
- Department of Pathology, College of Veterinary Medicine, The University of Georgia, Athens, GA 30602-7388, USA.
| |
Collapse
|
8
|
Gong Y, Yao E, Shen R, Goel A, Arcila M, Teruya-Feldstein J, Zakowski MF, Frankel S, Peifer M, Thomas RK, Ladanyi M, Pao W. High expression levels of total IGF-1R and sensitivity of NSCLC cells in vitro to an anti-IGF-1R antibody (R1507). PLoS One 2009; 4:e7273. [PMID: 19806209 PMCID: PMC2752171 DOI: 10.1371/journal.pone.0007273] [Citation(s) in RCA: 109] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2009] [Accepted: 09/05/2009] [Indexed: 01/05/2023] Open
Abstract
Background The IGF receptor type 1 (IGF-1R) pathway is frequently deregulated in human tumors and has become a target of interest for anti-cancer therapy. Methodology/Principal Findings We used a panel of 22 non-small cell lung cancer (NSCLC) cell lines to investigate predictive biomarkers of response to R1507, a fully-humanized anti-IGF-1R monoclonal antibody (Ab; Roche). 5 lines were moderately sensitive (25–50% growth inhibition) to R1507 alone. While levels of phospho-IGF-1R did not correlate with drug sensitivity, 4 out of 5 sensitive lines displayed high levels of total IGF-1R versus 1 out of 17 resistant lines (p = 0.003, Fisher's Exact). Sensitive lines also harbored higher copy numbers of IGF-1R as assessed by independent SNP array analysis. Addition of erlotinib or paclitaxel to R1507 led to further growth inhibition in sensitive but not resistant lines. In one EGFR mutant lung adenocarcinoma cell line (11–18), R1507 and erlotinib co-treatment induced apoptosis, whereas treatment with either drug alone induced only cell cycle arrest. Apoptosis was mediated, in part, by the survival-related AKT pathway. Additionally, immunohistochemical (IHC) staining of total IGF-1R with an anti-total IGF-1R Ab (G11;Ventana) was performed on tissue microarrays (TMAs) containing 270 independent NSCLC tumor samples. Staining intensity was scored on a scale of 0 to 3+. 39.3% of tumors showed medium to high IGF-1R IHC staining (scores of 2+ or 3+, respectively), while 16.7% had scores of 3+. Conclusions/Significance In NSCLC cell lines, high levels of total IGF-1R are associated with moderate sensitivity to R1507. These results suggest a possible enrichment strategy for clinical trials with anti-IGF-1R therapy.
Collapse
Affiliation(s)
- Yixuan Gong
- Pao Laboratory, Human Oncology and Pathogenesis Program, Memorial Sloan-Kettering Cancer Center, New York, New York, United States of America
| | - Evelyn Yao
- Pao Laboratory, Human Oncology and Pathogenesis Program, Memorial Sloan-Kettering Cancer Center, New York, New York, United States of America
| | - Ronglai Shen
- Department of Epidemiology and Biostatistics, Memorial Sloan-Kettering Cancer Center, New York, New York, United States of America
| | - Aviva Goel
- Pao Laboratory, Human Oncology and Pathogenesis Program, Memorial Sloan-Kettering Cancer Center, New York, New York, United States of America
| | - Maria Arcila
- Ladanyi Laboratory, Human Oncology and Pathogenesis Program, Memorial Sloan-Kettering Cancer Center, New York, New York, United States of America
| | - Julie Teruya-Feldstein
- Department of Pathology, Memorial Sloan-Kettering Cancer Center, New York, New York, United States of America
| | - Maureen F. Zakowski
- Department of Pathology, Memorial Sloan-Kettering Cancer Center, New York, New York, United States of America
| | - Stanley Frankel
- Medical Sciences, Oncology, Hoffmann-La Roche Inc., Nutley, New Jersey, United States of America
| | - Martin Peifer
- Max Planck Institute for Neurological Research with Klaus-Joachim Zülch Laboratories of the Max-Planck-Society and the Medical Faculty of the University of Köln, Köln, Germany
| | - Roman K. Thomas
- Max Planck Institute for Neurological Research with Klaus-Joachim Zülch Laboratories of the Max-Planck-Society and the Medical Faculty of the University of Köln, Köln, Germany
- Department I of Internal Medicine and Center of Integrated Oncology, University of Köln, Köln, Germany
- Chemical Genomics Center of the Max-Planck-Society, Dortmund, Germany
| | - Marc Ladanyi
- Ladanyi Laboratory, Human Oncology and Pathogenesis Program, Memorial Sloan-Kettering Cancer Center, New York, New York, United States of America
- Department of Pathology, Memorial Sloan-Kettering Cancer Center, New York, New York, United States of America
| | - William Pao
- Pao Laboratory, Human Oncology and Pathogenesis Program, Memorial Sloan-Kettering Cancer Center, New York, New York, United States of America
- Thoracic Oncology Service, Department of Medicine, Memorial Sloan-Kettering Cancer Center, New York, New York, United States of America
- * E-mail:
| |
Collapse
|
9
|
Marchiò S, Arap W, Pasqualini R. Targeting the extracellular signature of metastatic colorectal cancers. Expert Opin Ther Targets 2009; 13:363-79. [PMID: 19236157 DOI: 10.1517/14728220902762910] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
BACKGROUND Colorectal cancer is a leading cause of tumor death, a consequence primarily of the spreading of malignant cells to liver and lung. Despite a range of interventions for liver metastases, the present knowledge of few specific molecular targets may contribute to late diagnosis and poorly effective therapy. OBJECTIVE To review the most innovative methodology employed to profile the signature(s) of metastatic colorectal cancer (mCRC) and to address diagnostic/therapeutic agents. METHODS A broad range Medline search was conducted, with particular attention to the search terms 'liver metastasis signature', in combination with 'targeting' and 'nanotechnology'. RESULTS/CONCLUSIONS Studies aimed at the discovery of molecular signatures of cancers and metastasis are ongoing; the future of cancer/metastasis targeting is nanoparticle-mediated drug delivery.
Collapse
Affiliation(s)
- Serena Marchiò
- Institute for Cancer Research and Treatment, 10060 Candiolo, Italy
| | | | | |
Collapse
|
10
|
Sabbatini P, Rowand JL, Groy A, Korenchuk S, Liu Q, Atkins C, Dumble M, Yang J, Anderson K, Wilson BJ, Emmitte KA, Rabindran SK, Kumar R. Antitumor activity of GSK1904529A, a small-molecule inhibitor of the insulin-like growth factor-I receptor tyrosine kinase. Clin Cancer Res 2009; 15:3058-67. [PMID: 19383820 DOI: 10.1158/1078-0432.ccr-08-2530] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
PURPOSE Dysregulation of the insulin-like growth factor-I receptor (IGF-IR) signaling pathway has been implicated in the development of many types of tumors, including prostate, colon, breast, pancreatic, ovarian, and sarcomas. Agents that inhibit IGF-IR activity may be useful in treatment of patients with various cancers. EXPERIMENTAL DESIGN Kinase assays were used to identify a selective small-molecule inhibitor of IGF-IR activity. The effects of this compound on IGF-IR signaling, cell proliferation, and the cell cycle were determined using a panel of cell lines. Antitumor activity was evaluated in human tumor xenografts growing in athymic mice. Inhibition of IGF-IR and the closely related insulin receptor (IR) was measured in vivo, and the effect on glucose metabolism was evaluated. RESULTS GSK1904529A selectively inhibits IGF-IR and IR with IC(50)s of 27 and 25 nmol/L, respectively. GSK1904529A blocks receptor autophosphorylation and downstream signaling, leading to cell cycle arrest. It inhibits the proliferation of cell lines derived from solid and hematologic malignancies, with multiple myeloma and Ewing's sarcoma cell lines being most sensitive. Oral administration of GSK1904529A decreases the growth of human tumor xenografts in mice, consistent with a reduction of IGF-IR phosphorylation in tumors. Despite the potent inhibitory activity of GSK1904529A on IR in vitro and in vivo, minimal effects on blood glucose levels are observed in animals at doses that show significant antitumor activity. CONCLUSION GSK1904529A is a promising candidate for therapeutic use in IGF-IR-dependent tumors.
Collapse
|
11
|
Discovery of 3,5-disubstituted-1H-pyrrolo[2,3-b]pyridines as potent inhibitors of the insulin-like growth factor-1 receptor (IGF-1R) tyrosine kinase. Bioorg Med Chem Lett 2009; 19:3136-40. [PMID: 19394223 DOI: 10.1016/j.bmcl.2008.12.110] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2008] [Revised: 12/22/2008] [Accepted: 12/30/2008] [Indexed: 11/21/2022]
Abstract
Exploration of the SAR around a series of 3,5-disubstituted-1H-pyrrolo[2,3-b]pyridines led to the discovery of novel pyrrolopyridine inhibitors of the IGF-1R tyrosine kinase. Several compounds demonstrated nanomolar potency in enzyme and cellular mechanistic assays.
Collapse
|