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Ganugula R, Deng M, Arora M, Pan HL, Kumar MNVR. Polyester Nanoparticle Encapsulation Mitigates Paclitaxel-Induced Peripheral Neuropathy. ACS Chem Neurosci 2019; 10:1801-1812. [PMID: 30609902 DOI: 10.1021/acschemneuro.8b00703] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Chemotherapy utilizing cytotoxic drugs, such as paclitaxel (PTX), is still a commonly used therapeutic approach to treat both localized and metastasized cancers. Unlike traditional regimens in which PTX is administered at the maximum tolerated dose, alternative regimens like metronomic dosing are beneficial by administering PTX more frequently and in much lower doses exploiting antiangiogenic and immunomodulatory effects. However, PTX-induced peripheral neuropathy and lack of patient compliant dosage forms of PTX are major roadblocks for the successful implementation of metronomic regimens. Because of the success of polyester nanoparticle drug delivery, we explored the potential of nanoparticle-encapsulated paclitaxel (nPTX) in alleviating peripheral neuropathy using a rat model. Rats were injected intraperitoneally with 2 mg/kg body weight of PTX or nPTX on four alternate days, and neuropathic pain and neuronal damage were characterized using behavioral assessments, histology, and immunohistochemistry. The reduction in tactile and nociceptive pressure thresholds was significantly less in nPTX-treated rats than in PTX-treated rats over a 16-day study period. Histological analysis showed that the degree of dorsal root ganglion (DRG) degeneration and reduction in motor neurons in the spinal cord was significantly lower in the nPTX group than the PTX group. Further, immunofluorescence data reveals that nPTX-treated rats had an increased density of a neuronal marker, β-tubulin-III, reduced TUNEL positive cells, and increased high molecular weight neurofilament in the spinal cord, DRG, and sciatic nerves compared with PTX-treated rats. Therefore, this work has important implications in improving risk-benefit profile of PTX, paving the way for metronomic regimens.
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Affiliation(s)
- R. Ganugula
- Department of Pharmaceutical Sciences, College of Pharmacy, Texas A&M University, Reynolds Medical Building, TAMU Mail Stop 1114, College Station, Texas 77843, United States
| | - M. Deng
- Center for Neuroscience and Pain Research, Department of Anesthesiology and Perioperative Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, United States
| | - M. Arora
- Department of Pharmaceutical Sciences, College of Pharmacy, Texas A&M University, Reynolds Medical Building, TAMU Mail Stop 1114, College Station, Texas 77843, United States
| | - H.-L. Pan
- Center for Neuroscience and Pain Research, Department of Anesthesiology and Perioperative Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, United States
| | - M. N. V. Ravi Kumar
- Department of Pharmaceutical Sciences, College of Pharmacy, Texas A&M University, Reynolds Medical Building, TAMU Mail Stop 1114, College Station, Texas 77843, United States
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Li Y, Wang J, Gao X, Han W, Zheng Y, Xu H, Zhang C, He Q, Zhang L, Li Z, Zhou D. c-Met targeting enhances the effect of irradiation and chemical agents against malignant colon cells harboring a KRAS mutation. PLoS One 2014; 9:e113186. [PMID: 25427200 PMCID: PMC4245100 DOI: 10.1371/journal.pone.0113186] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2014] [Accepted: 10/21/2014] [Indexed: 12/16/2022] Open
Abstract
Although EGFR-targeted therapy has been beneficial to colorectal cancer patients, several studies have showed this clinical benefit was restricted to patients with wild-type KRAS exon 2 colorectal cancer. Therefore, it is crucial to explore efficient treatment strategies in patients with KRAS mutations. c-Met is an emerging target for the development of therapeutics against colorectal cancer. In this study, we first used the SW620 cell line, which has an activating KRAS mutation, to generate a stable cell line with conditional regulation of c-Met, which is an essential gene for growth and an oncogene. Using this approach, we evaluated the benefits of combined c-Met-targeted therapy with irradiation or chemical agents. In this cell line, we observed that the proliferation and migration of SW620 cells were reduced by the induction of c-Met shRNA. Furthermore, c-Met knockdown enhanced the anti-proliferative effects of 5-FU and Taxol but not cisplatin, irinotecan or sorafenib. These enhancements were also observed in another colon cancer cells line HCT-116, which also has a KRAS mutation. The response of SW620 cells to irradiation was also enhanced by c-Met knockdown. This method and obtained data might have important implications for exploring the combinatory effects of targeted therapies with conventional medications. Moreover, the data suggested that the combination of c-Met-targeted therapy with chemotherapy or irradiation might be an effective strategy against colorectal cancer harboring a KRAS mutation.
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Affiliation(s)
- Yingbo Li
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing, China
- School of Pharmaceutical Sciences, Peking University, Beijing, China
| | - Jinxi Wang
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing, China
- Second Department of Surgery, the Fourth Hospital of Hebei Medical University, Hebei, China
| | - Xing Gao
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing, China
- Second Department of Surgery, the Fourth Hospital of Hebei Medical University, Hebei, China
| | - Weihua Han
- Second Department of Surgery, the Fourth Hospital of Hebei Medical University, Hebei, China
| | - Yongxiang Zheng
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing, China
- School of Pharmaceutical Sciences, Peking University, Beijing, China
| | - Huan Xu
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing, China
- School of Pharmaceutical Sciences, Peking University, Beijing, China
| | - Chuanling Zhang
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing, China
- School of Pharmaceutical Sciences, Peking University, Beijing, China
| | - Qiuchen He
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing, China
- School of Pharmaceutical Sciences, Peking University, Beijing, China
| | - Lihe Zhang
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing, China
- School of Pharmaceutical Sciences, Peking University, Beijing, China
| | - Zhongxin Li
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing, China
- Second Department of Surgery, the Fourth Hospital of Hebei Medical University, Hebei, China
- * E-mail: (DZ); (ZL)
| | - Demin Zhou
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing, China
- School of Pharmaceutical Sciences, Peking University, Beijing, China
- * E-mail: (DZ); (ZL)
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Zhang H, Wang YJ, Zhang YK, Wang DS, Kathawala RJ, Patel A, Talele TT, Chen ZS, Fu LW. AST1306, a potent EGFR inhibitor, antagonizes ATP-binding cassette subfamily G member 2-mediated multidrug resistance. Cancer Lett 2014; 350:61-8. [DOI: 10.1016/j.canlet.2014.04.008] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2013] [Revised: 03/26/2014] [Accepted: 04/09/2014] [Indexed: 12/25/2022]
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Wållberg H, Ståhl S. Design and evaluation of radiolabeled tracers for tumor imaging. Biotechnol Appl Biochem 2014; 60:365-83. [PMID: 24033592 DOI: 10.1002/bab.1111] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2012] [Accepted: 02/20/2013] [Indexed: 12/22/2022]
Abstract
The growing understanding of tumor biology and the identification of tumor-specific genetic and molecular alterations, such as the overexpression of membrane receptors and other proteins, allows for personalization of patient management using targeted therapies. However, this puts stringent demands on the diagnostic tools used to identify patients who are likely to respond to a particular treatment. Radionuclide molecular imaging is a promising noninvasive method to visualize and characterize the expression of such targets. A number of different proteins, from full-length antibodies and their derivatives to small scaffold proteins and peptide receptor-ligands, have been applied to molecular imaging, each demonstrating strengths and weaknesses. Here, we discuss the concept of molecular targeting and, in particular, molecular imaging of cancer-associated targets. Additionally, we describe important biotechnological considerations and desired features when designing and developing tracers for radionuclide molecular imaging.
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Affiliation(s)
- Helena Wållberg
- Division of Molecular Biotechnology, School of Biotechnology, AlbaNova University Center, KTH Royal Institute of Technology, Stockholm, Sweden
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Shathish K, Guruvayoorappan C. Decalepis hamiltonii inhibits tumor progression and metastasis by regulating the inflammatory mediators and nuclear factor κB subunits. Integr Cancer Ther 2013; 13:141-51. [PMID: 24013642 DOI: 10.1177/1534735413502075] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
UNLABELLED Metastasis is an extremely complex process that is a major problem in the management of cancer. In the present study, we had evaluated the antimetastatic activity of DECALEPIS HAMILTONI: using B16F-10 melanoma-induced experimental lung metastasis in a C57BL/6 mice model. D HAMILTONI treatment significantly ( : < .01) inhibited lung tumor nodule formation and reduced the lung collagen hydroxyproline, hexosamine, and uronic acid levels. Similarly serum sialic acid and γ-glutamyl transpeptidase levels were also significantly inhibited after D HAMILTONI treatment. The levels of proinflammatory cytokines such as tumor necrosis factor α, interleukin (IL)-1β, IL-6, granulocyte monocyte colony-stimulating factor, and IL-2 in the serum of these animals were significantly altered after D HAMILTONI treatment. The serum NO level was also found to be significantly decreased after D HAMILTONI treatment. This decreased NO level after D HAMILTONI treatment was also accompanied by decreased inducible NO synthase and cyclooxygenase-2 expression. The study reveals that D HAMILTONI treatment could alter proinflammatory cytokine production and could inhibit the activation and nuclear translocation of p65 and p50 subunits of nuclear factor κB in B16F-10 cells.
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