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Chen FW, Wu YL, Cheng CC, Hsiao YW, Chi JY, Hung LY, Chang CP, Lai MD, Wang JM. Inactivation of pentraxin 3 suppresses M2-like macrophage activity and immunosuppression in colon cancer. J Biomed Sci 2024; 31:10. [PMID: 38243273 PMCID: PMC10799366 DOI: 10.1186/s12929-023-00991-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 12/20/2023] [Indexed: 01/21/2024] Open
Abstract
BACKGROUND The tumor microenvironment is characterized by inflammation-like and immunosuppression situations. Although cancer-associated fibroblasts (CAFs) are among the major stromal cell types in various solid cancers, including colon cancer, the interactions between CAFs and immune cells remains largely uncharacterized. Pentraxin 3 (PTX3) is responsive to proinflammatory cytokines and modulates immunity and tissue remodeling, but its involvement in tumor progression appears to be context-dependent and is unclear. METHODS Open-access databases were utilized to examine the association of PTX3 expression and the fibroblast signature in colon cancer. Loss-of-function assays, including studies in tamoxifen-induced Ptx3 knockout mice and treatment with an anti-PTX3 neutralizing antibody (WHC-001), were conducted to assess the involvement of PTX3 in colon cancer progression as well as its immunosuppressive effect. Finally, bioinformatic analyses and in vitro assays were performed to reveal the downstream effectors and decipher the involvement of the CREB1/CEBPB axis in response to PTX3 and PTX3-induced promotion of M2 macrophage polarization. RESULTS Clinically, higher PTX3 expression was positively correlated with fibroblasts and inflammatory response signatures and associated with a poor survival outcome in colon cancer patients. Blockade of PTX3 significantly reduced stromal cell-mediated tumor development. The decrease of the M2 macrophage population and an increase of the cytotoxic CD8+ T-cell population were observed following PTX3 inactivation in allografted colon tumors. We further revealed that activation of cyclic AMP-responsive element-binding protein 1 (CREB1) mediated the PTX3-induced promotion of M2 macrophage polarization. CONCLUSIONS PTX3 contributes to stromal cell-mediated protumor immunity by increasing M2-like macrophage polarization, and inhibition of PTX3 with WHC-001 is a potential therapeutic strategy for colon cancer.
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Affiliation(s)
- Feng-Wei Chen
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Yung-Ling Wu
- Department of Biotechnology and Bioindustry Sciences, College of Bioscience and Biotechnology, National Cheng Kung University, No. 1 University Rd., Tainan, 70101, Taiwan
| | - Chao-Chun Cheng
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Yu-Wei Hsiao
- Department of Biotechnology and Bioindustry Sciences, College of Bioscience and Biotechnology, National Cheng Kung University, No. 1 University Rd., Tainan, 70101, Taiwan
| | - Jhih-Ying Chi
- Department of Biotechnology and Bioindustry Sciences, College of Bioscience and Biotechnology, National Cheng Kung University, No. 1 University Rd., Tainan, 70101, Taiwan
| | - Liang-Yi Hung
- Department of Biotechnology and Bioindustry Sciences, College of Bioscience and Biotechnology, National Cheng Kung University, No. 1 University Rd., Tainan, 70101, Taiwan
| | - Chih-Peng Chang
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Department of Microbiology & Immunology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Ming-Derg Lai
- Department of Biochemistry and Molecular Biology, College of Medicine, National Cheng Kung University, No. 1 University Rd., Tainan, 70101, Taiwan.
| | - Ju-Ming Wang
- Department of Biotechnology and Bioindustry Sciences, College of Bioscience and Biotechnology, National Cheng Kung University, No. 1 University Rd., Tainan, 70101, Taiwan.
- Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, Taiwan.
- International Research Center for Wound Repair and Regeneration, National Cheng Kung University, Tainan, Taiwan.
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.
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Chi JY, Hsiao YW, Liu HL, Fan XJ, Wan XB, Liu TL, Hung SJ, Chen YT, Liang HY, Wang JM. Fibroblast CEBPD/SDF4 axis in response to chemotherapy-induced angiogenesis through CXCR4. Cell Death Discov 2021; 7:94. [PMID: 33953165 PMCID: PMC8099881 DOI: 10.1038/s41420-021-00478-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 02/25/2021] [Accepted: 04/13/2021] [Indexed: 01/07/2023] Open
Abstract
Cancer-associated fibroblasts (CAFs) play an essential role in supporting cancer progression. However, the details and consequent effects in response to the communication between CAFs and angiogenesis remain largely uninvestigated, especially in anticancer drug treatments. We found that cisplatin and 5-fluorouracil could induce fibroblast differentiation toward myofibroblasts via CCAAT/enhancer-binding protein delta (CEBPD) and consequently promote proliferation, migration, and in vitro tube formation of vascular endothelial cells and angiogenesis in vivo. Stromal-cell-derived factor 4 (SDF4) is responsive to anticancer drugs via CEBPD activation in CAFs and contributes to create a permissive environment for tumor cell angiogenesis and promotion of distant metastasis. Importantly, we demonstrated that SDF4 interacts with CXCR4 to trigger VEGFD expression through the activation of the ERK1/2 and p38 pathways in endothelial cells. Taken together, our novel findings support that SDF4 can be a therapeutic target in inhibition of angiogenesis for chemotherapy drug-administrated cancer patients.
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Affiliation(s)
- Jhih-Ying Chi
- Department of Biotechnology and Bioindustry Sciences, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, 701, Taiwan
| | - Yu-Wei Hsiao
- Department of Biotechnology and Bioindustry Sciences, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, 701, Taiwan
| | - Hai-Ling Liu
- Department of Pathology, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510655, China
| | - Xin-Juan Fan
- Department of Pathology, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510655, China
| | - Xiang-Bo Wan
- Department of Radiation Oncology, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510655, China
| | - Tsung-Lin Liu
- Department of Biotechnology and Bioindustry Sciences, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, 701, Taiwan
| | - Sheng-Jou Hung
- Department of Biotechnology and Bioindustry Sciences, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, 701, Taiwan
| | - Yi-Ting Chen
- Department of Biotechnology and Bioindustry Sciences, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, 701, Taiwan
| | - Hsin-Yin Liang
- Department of Biotechnology and Bioindustry Sciences, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, 701, Taiwan
| | - Ju-Ming Wang
- Department of Biotechnology and Bioindustry Sciences, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, 701, Taiwan. .,International Research Center for Wound Repair and Regeneration, National Cheng Kung University, Tainan, Taiwan. .,Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, 110, Taiwan. .,Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, 807, Taiwan.
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Chen YT, Chen FW, Chang TH, Wang TW, Hsu TP, Chi JY, Hsiao YW, Li CF, Wang JM. Hepatoma-derived growth factor supports the antiapoptosis and profibrosis of pancreatic stellate cells. Cancer Lett 2019; 457:180-190. [PMID: 31078734 DOI: 10.1016/j.canlet.2019.05.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 03/30/2019] [Accepted: 05/02/2019] [Indexed: 12/13/2022]
Abstract
Pancreatic cancer is refractory and is characterized by extensively surrounding and intratumor fibrotic reactions that are contributed by activated pancreatic stellate cells (PSCs). Herein, we show that CCAAT/enhancer-binding protein δ (CEBPD) responds to transforming growth factor-β1 (TGF-β1) through reciprocal loop regulation and that activated hypoxia inducible factor-1α (HIF-1α) further contributes to the upregulation of the hepatoma-derived growth factor (HDGF) gene. Secreted HDGF contributes to the antiapoptosis of PSCs and consequently leads to the synthesis and deposition of extracellular matrix proteins for stabilizing PSC/pancreatic cancer cell (PCC) tumor foci. This result agrees with the observation that severe stromal growth positively correlated with stromal HDGF and CEBPD expression in pancreatic cancer specimens. Collectively, the identification of the TGF-β1-activated CEBPD/HIF-1α/HDGF axis provides new insights into novel discoveries of HDGF in the antiapoptosis and profibrosis of PSCs and the outgrowth of PCCs.
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Affiliation(s)
- Yi-Ting Chen
- Department of Biotechnology and Bioindustry Sciences, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, Taiwan; Medical Research Department, Chi Mei Medical Center, Tainan, Taiwan
| | - Feng-Wei Chen
- Institute of Basic Medical Science, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Tsung-Hao Chang
- Institute of Basic Medical Science, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Tso-Wen Wang
- Department of Biotechnology and Bioindustry Sciences, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, Taiwan
| | - Teng-Po Hsu
- Department of Life Sciences, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, Taiwan
| | - Jhih-Ying Chi
- Department of Biotechnology and Bioindustry Sciences, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, Taiwan
| | - Yu-Wei Hsiao
- Department of Biotechnology and Bioindustry Sciences, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, Taiwan
| | - Chien-Feng Li
- Medical Research Department, Chi Mei Medical Center, Tainan, Taiwan; Department of Pathology, Chi Mei Medical Center, Tainan, Taiwan.
| | - Ju-Ming Wang
- Department of Biotechnology and Bioindustry Sciences, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, Taiwan; International Research Center for Wound Repair and Regeneration, National Cheng Kung University, Tainan, Taiwan; Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, Taiwan; Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.
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Chi JY, Hsiao YW, Li CF, Lo YC, Lin ZY, Hong JY, Liu YM, Han X, Wang SM, Chen BK, Tsai KK, Wang JM. Targeting chemotherapy-induced PTX3 in tumor stroma to prevent the progression of drug-resistant cancers. Oncotarget 2016; 6:23987-4001. [PMID: 26124179 PMCID: PMC4695165 DOI: 10.18632/oncotarget.4364] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Accepted: 05/30/2015] [Indexed: 11/27/2022] Open
Abstract
The tumor microenvironment has been suggested to participate in tumorigenesis, but the nature of the communication between cancer cells and the microenvironment, especially in response to anticancer drugs, remains obscure. We determined that activation of the CCAAT/enhancer binding protein delta (CEBPD) response to Cisplatin and 5-Fluorouracil in cancer-associated macrophages and fibroblasts contributed to the metastasis, invasion, acquired chemoresistance and stemness of cancer cells by in vitro and in vivo assays. Specifically, reporter and in vivo DNA binding assays were used to determine that Pentraxin 3 (PTX3) is a CEBPD responsive gene and serves a protumor role upon anticancer drug treatment. Finally, a PTX3 peptide inhibitor RI37 was developed and assessed the antitumor effects by in vivo assays. RI37 could function as a promising inhibitor for preventing cancer progression and the metastasis, invasion and progression of drug-resistant cancers. The identification of PTX3 provided a new insight in the interaction between host and tumor and the RI37 peptide showed a great opportunity to largely reduce the risk of invasion and metastasis of cancer and drug-resistant cancers.
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Affiliation(s)
- Jhih-Ying Chi
- Institute of Basic Medical Science, National Cheng Kung University, Tainan, Taiwan R.O.C
| | - Yu-Wei Hsiao
- Institute of Bioinformatics and Biosignal Transduction, National Cheng Kung University, Tainan, Taiwan R.O.C
| | - Chien-Feng Li
- Department of Pathology, Chi-Mei Medical Center, Tainan, Taiwan R.O.C
| | - Yu-Chih Lo
- Institute of Bioinformatics and Biosignal Transduction, National Cheng Kung University, Tainan, Taiwan R.O.C
| | - Zu-Yau Lin
- Cancer Center and Division of Hepatobiliary Medicine, Department of Internal Medicine, Kaohsiung Medical University Hospital, Taiwan R.O.C
| | - Jhen-Yi Hong
- Institute of Bioinformatics and Biosignal Transduction, National Cheng Kung University, Tainan, Taiwan R.O.C
| | - Yang-Ming Liu
- Institute of Bioinformatics and Biosignal Transduction, National Cheng Kung University, Tainan, Taiwan R.O.C
| | - Xiu Han
- Institute of Bioinformatics and Biosignal Transduction, National Cheng Kung University, Tainan, Taiwan R.O.C
| | - Shao-Ming Wang
- Institute of Basic Medical Science, National Cheng Kung University, Tainan, Taiwan R.O.C
| | - Ben-Kuen Chen
- Institute of Bioinformatics and Biosignal Transduction, National Cheng Kung University, Tainan, Taiwan R.O.C
| | - Kelvin K Tsai
- National Institute of Cancer Research and Translational Center for Glandular Malignancies, National Health Research Institutes, Tainan, Taiwan R.O.C
| | - Ju-Ming Wang
- Institute of Bioinformatics and Biosignal Transduction, National Cheng Kung University, Tainan, Taiwan R.O.C.,Institute of Medical Sciences, Taipei Medical University, Taipei, Taiwan R.O.C
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Chi JY, Wang JM. Abstract 926: Pentraxin 3 is responsive to the activation of CCAAT/enhancer binding delta and promotes cancer progression in the tumor microenvironment. Cancer Res 2016. [DOI: 10.1158/1538-7445.am2016-926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
This lack of understanding especially impacts the design of anticancer treatments. It is a common observation in the clinic that recurrent cancers, and particularly anticancer drug-resistant cancers, are more difficult to treat because they spread faster than the original tumor. CCAAT/enhancer binding protein delta (CEBPD) was activated in M2 macrophages and myofibroblasts/cancer-associated fibroblasts (CAFs) and contributed to metastasis, invasion and recurrence of cancer cells in response to PGE2 and the anticancer drugs. We further found that pentraxin 3 (PTX3) was activated in response to CEBPD induction and involved in migration and invasion of breast cancer cells, and the same phenomenon was also observed in drug-resistant cancers. Interestingly, we found that a recombinant PTX3 protein containing the C-terminal region (pPTX3) showed an opposite tumorigenic effect to the mammalian PTX3. The results suggest that PTX3 could be a promising target for preventing the metastasis/invasion of cancers and treating drug-resistant cancers.
Citation Format: Jhih-Ying Chi, Ju-Ming Wang. Pentraxin 3 is responsive to the activation of CCAAT/enhancer binding delta and promotes cancer progression in the tumor microenvironment. [abstract]. In: Proceedings of the 107th Annual Meeting of the American Association for Cancer Research; 2016 Apr 16-20; New Orleans, LA. Philadelphia (PA): AACR; Cancer Res 2016;76(14 Suppl):Abstract nr 926.
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Affiliation(s)
- Jhih-Ying Chi
- 1Institute of Basic Medical Science, National Cheng Kung University, Tainan, Taiwan
| | - Ju-Ming Wang
- 2Institute of Bioinformatics and Biosignal Transduction, National Cheng Kung University, Tainan, Taiwan
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Chang CL, Huang LY, Wu CL, Chi JY. Abstract 3873: Improving the effectiveness of chemotherapy by combining compounds that suppress drug-induced microsatellite instability. Cancer Res 2015. [DOI: 10.1158/1538-7445.am2015-3873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Many chemotherapeutic agents damage DNA and induce DNA damage response (DDR) signaling, resulting in growth arrest or apoptosis. DNA mismatch repair (MMR) system not only maintains genomic stability but also participates in DDR signaling. MMR deficiency leads to genetic hypermutability, manifested as microsatellite instability (MSI), and contributes to cancer pathogenesis and drug resistance. MSI has been linked to chemotherapy and therapy-related secondary cancer. Therefore, it is important to prevent drug-induced MSI to increase the effectiveness of chemotherapy while reducing cancer mortality. The purpose of this study is to characterize the MSI-inducing ability of individual chemotherapeutic agents and identify small compounds that suppress drug-induced MSI. In a human colorectal cancer cell model, all tested drugs individually induced the instability of reporter and endogenous microsatellites while reducing steady-state levels of certain MMR proteins. Relatively, oxaliplatin induced a higher MSI frequency than many tested drugs such as 5-FU. It is known that MMR-deficient tumors are resistant to 5-FU and not oxaliplatin. We then screened a commercially available library for small compounds that suppress oxaliplatin-induced MSI using a dual-fluorescent MSI reporter. We found that the majority of compounds were capable of reducing oxaliplatin-induced MSI. However, they also undesirably decreased the cytotoxicity of oxaliplatin. On the other hand, a small number of compounds such as I-6 and II-13 suppressed oxaliplatin-induced MSI with or without an improvement of drug cytotoxicity. Relative to oxaliplatin alone, co-treatment of 1 μM oxaliplatin with 6-10 μM compound II-13 decreased drug-induced MSI frequency by 45-70% without significantly affecting the cytotoxicity of oxaliplatin. Co-treatment of oxaliplatin with 4-10 μM compound I-6, however, decreased both drug-induced MSI and cell numbers by 50-78% in a dose-dependent manner. To our surprise, compounds such as II-13 suppressed MSI induced by oxaliplatin but not by 5-FU. In conclusion, individual drugs displayed different MSI-inducing abilities whereas MSI-suppressing compounds appear to be drug-specific. Further identification and validation of MSI-suppressing compounds specific for 5-FU or leucovorin, for example, would improve the effectiveness of combination chemotherapy such as FOLFOX.
Citation Format: Christina L. Chang, Li-Yan Huang, Chang-Lin Wu, Jhih-Ying Chi. Improving the effectiveness of chemotherapy by combining compounds that suppress drug-induced microsatellite instability. [abstract]. In: Proceedings of the 106th Annual Meeting of the American Association for Cancer Research; 2015 Apr 18-22; Philadelphia, PA. Philadelphia (PA): AACR; Cancer Res 2015;75(15 Suppl):Abstract nr 3873. doi:10.1158/1538-7445.AM2015-3873
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Ko CY, Chu YY, Narumiya S, Chi JY, Furuyashiki T, Aoki T, Wang SM, Chang WC, Wang JM. CCAAT/enhancer-binding protein delta/miR135a/thrombospondin 1 axis mediates PGE2-induced angiogenesis in Alzheimer's disease. Neurobiol Aging 2014; 36:1356-68. [PMID: 25554493 DOI: 10.1016/j.neurobiolaging.2014.11.020] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Revised: 09/30/2014] [Accepted: 11/25/2014] [Indexed: 12/24/2022]
Abstract
In Alzheimer's disease (AD), large populations of endothelial cells undergo angiogenesis due to brain hypoxia and inflammation. Substantial evidence from epidemiologic, pathologic, and clinical reports suggests that vascular factors are critical for the pathogenesis of AD. However, the precise mechanistic correlation between inflammation and angiogenesis in AD has not been well elucidated. Prostaglandin E2 (PGE2), a key factor of the inflammatory response, has been known to promote angiogenesis. In this study, we demonstrated that PGE2 acts through EP4 receptor and protein kinase A to modulate CCAAT/enhancer-binding protein delta (CEBPD) abundance in astrocytes. Attenuated vessel formation was observed in the brains of AppTg/Cebpd(-/-) mice. We showed that miR135a was responsive to the induction of CEBPD and further negatively regulated thrombospondin 1 (THBS1) transcription by directly targeting its 3'-untranslated region (3'UTR) in astrocytes. Furthermore, conditioned media from astrocytes expressing miR135a promoted Human umbilical vein endothelial cells (HUVECs) tube-like formation, which correlated with the effects of PGE2 on angiogenesis. Our results indicated that CEBPD contributes to the repression of THBS1 transcription by activating the expression of miR135a in astrocytes following PGE2 treatment. We provided new evidence that astrocytic CEBPD increases angiogenesis during AD pathogenesis. This discovery supports the negative influence of CEBPD activation in astrocytes with respect to AD pathogenesis and implies that the CEBPD/miR135a/THBS1 axis could be a therapeutic target of AD.
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Affiliation(s)
- Chiung-Yuan Ko
- Ph.D. Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan; Center for Neurotrauma and Neuroregeneration, Taipei Medical University, Taipei, Taiwan
| | - Yu-Yi Chu
- Institute of Bioinformatics and Biosignal Transduction, National Cheng Kung University, Tainan, Taiwan
| | - Shuh Narumiya
- Core Research for Evolutional Science and Technology (CREST), Kyoto, Japan
| | - Jhih-Ying Chi
- Institute of Basic Medical Sciences, National Cheng Kung University, Tainan
| | | | - Tomohiro Aoki
- Core Research for Evolutional Science and Technology (CREST), Kyoto, Japan
| | - Shao-Ming Wang
- Institute of Basic Medical Sciences, National Cheng Kung University, Tainan
| | - Wen-Chang Chang
- Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Ju-Ming Wang
- Institute of Bioinformatics and Biosignal Transduction, National Cheng Kung University, Tainan, Taiwan; Institute of Basic Medical Sciences, National Cheng Kung University, Tainan; Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, Taiwan; Infectious Disease and Signaling Research Center, National Cheng Kung University, Tainan, Taiwan.
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Li IC, Chiu CY, Wu CL, Chi JY, Jian SR, Wang SW, Chang CL. A dual-fluorescent reporter facilitates identification of thiol compounds that suppress microsatellite instability induced by oxidative stress. Free Radic Biol Med 2014; 69:86-95. [PMID: 24412704 DOI: 10.1016/j.freeradbiomed.2013.12.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Revised: 12/13/2013] [Accepted: 12/19/2013] [Indexed: 01/22/2023]
Abstract
The DNA mismatch-repair (MMR) system corrects replicative errors and minimizes mutations that occur at a high rate in microsatellites. Patients with chronic inflammation or inflammation-associated cancer display microsatellite instability (MSI), indicating a possible MMR inactivation. In fact, H2O2-generated oxidative stress inactivates the MMR function and increases mutation accumulation in a reporter microsatellite. However, it remains unclear whether MSI induced by oxidative stress is preventable because of the lack of a sufficiently sensitive detection assay. Here, we developed and characterized a dual-fluorescent system, utilizing DsRed harboring the (CA)13 microsatellite as a reporter and GFP for normalization, in near-isogenic human colorectal cancer cell lines. Via flow cytometry, this reporter sensitively detected H2O2-generated oxidative microsatellite mutations in a dose-dependent manner. The reporter further revealed that glutathione or N-acetylcysteine was better than aspirin and ascorbic acid for suppressing oxidative microsatellite mutations. These two thiol compounds also partially suppressed oxidative frameshift mutations in the coding microsatellites of the hMSH6 and CHK1 genes based on a fluoresceinated PCR-based assay. MSI suppression by N-acetylcysteine appears to be mediated through reduction of oxidative frameshift mutations in the coding microsatellite of hMSH6 and protection of hMSH6 and other MMR protein levels from being decreased by H2O2. Our findings suggest a linkage between oxidative damage, MMR deficiency, and MSI. The two thiol compounds are potentially valuable for preventing inflammation-associated MSI. The dual-fluorescent reporter with improved features will facilitate identification of additional compounds that modulate MSI, which is relevant to cancer initiation and progression.
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Affiliation(s)
- I-Chen Li
- Institute of Molecular Medicine, National Cheng Kung University, Tainan 70101, Taiwan
| | - Chien-Yuan Chiu
- Institute of Oral Medicine, and National Cheng Kung University, Tainan 70101, Taiwan
| | - Chang-Lin Wu
- Institute of Basic Medical Sciences, National Cheng Kung University, Tainan 70101, Taiwan
| | - Jhih-Ying Chi
- Institute of Molecular Medicine, National Cheng Kung University, Tainan 70101, Taiwan
| | - Siao-Ru Jian
- Institute of Oral Medicine, and National Cheng Kung University, Tainan 70101, Taiwan
| | - Shainn-Wei Wang
- Institute of Molecular Medicine, National Cheng Kung University, Tainan 70101, Taiwan; Institute of Basic Medical Sciences, National Cheng Kung University, Tainan 70101, Taiwan
| | - Christina L Chang
- Institute of Molecular Medicine, National Cheng Kung University, Tainan 70101, Taiwan; Institute of Oral Medicine, and National Cheng Kung University, Tainan 70101, Taiwan; Institute of Basic Medical Sciences, National Cheng Kung University, Tainan 70101, Taiwan.
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Tsai KD, Chen W, Wang SH, Hsiao YW, Chi JY, Wu HY, Lee YJ, Wong HY, Tseng MJ, Lin TH. Downregulation of connective tissue growth factor by LPS/IFN-γ-induced nitric oxide is reversed by aristolochic acid treatment in glomerular mesangial cells via STAT-1α and NF-κB signaling. Chem Biol Interact 2014; 210:86-95. [PMID: 24412304 DOI: 10.1016/j.cbi.2013.12.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Revised: 12/09/2013] [Accepted: 12/30/2013] [Indexed: 01/14/2023]
Abstract
Aristolochic acid (AA) is a common cause of Chinese herb nephropathy. The mechanisms involved in the pathogenesis of AA nephropathy (AAN) are intricate. One well-documented effect of AA in the kidney is its pro-fibrotic activity. Nitric oxide (NO), a messenger gas generated from l-arginine, is the product of nitric oxide synthase (NOS). NO is involved in renal hemodynamics and exerts cytoprotective effects against renal injury. In the present study, the role of NO in AAN was investigated in MES-13 cells, a glomerular mesangial cell line. NO endogenously generated by the induction of inducible nitric oxide synthase (iNOS) with lipopolysaccharide (LPS)/interferon-γ (IFN-γ) significantly downregulated connective tissue growth factor (CTGF) protein expression in MES-13 cells. AA significantly suppressed LPS/IFN-γ-induced NO production and reversed CTGF expression that was downregulated by LPS/IFN-γ. AA decreased iNOS gene and protein expressions in a concentration-dependent manner. AA caused declines in LPS/IFN-γ-induced signal transducer and activator of transcription-1α (STAT-1α) phosphorylation and interferon response factor-1 (IRF-1) mRNA expression. Furthermore, AA attenuated IκB phosphorylation and reduced NF-κB translocation to the nuclear fraction. Taken together, our data indicate that AA reversed the CTGF expression inhibited by LPS/IFN-γ treatment via suppression of NO and iNOS expressions in MES-13 cells through inhibition of the JAK/STAT-1α and NF-κB signaling pathways. NO potentially exerts antifibrotic activity by down regulation of CTGF in MES-13 cells and inhibition of the iNOS gene by AA might partially account for the fibrotic effects of AA in nephropathy.
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Affiliation(s)
- Kuen-Daw Tsai
- Department of Internal Medicine, China Medical University and Beigang Hospital, 123, Sinde Road, Beigang Township, Yunlin County 65152, Taiwan, ROC; Institute of Molecular Biology, National Chung Cheng University, 168 University Road, Minhsiung Township, Chiayi County 62102, Taiwan, ROC
| | - Wei Chen
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Chia-Yi Christian Hospital, Chiayi, Taiwan, ROC
| | - Sue-Hong Wang
- Department of Biomedical Sciences, Chung Shan Medical University, No. 110, Jianguo North Road, Section 1, Taichung 40203, Taiwan, ROC; Department of Medical Research, Chung Shan Medical University Hospital, No. 110, Jianguo North Road, Section 1, Taichung 40203, Taiwan, ROC
| | - Yu-Wei Hsiao
- Department of Biomedical Sciences, Chung Shan Medical University, No. 110, Jianguo North Road, Section 1, Taichung 40203, Taiwan, ROC; Department of Medical Research, Chung Shan Medical University Hospital, No. 110, Jianguo North Road, Section 1, Taichung 40203, Taiwan, ROC
| | - Jhih-Ying Chi
- Department of Biomedical Sciences, Chung Shan Medical University, No. 110, Jianguo North Road, Section 1, Taichung 40203, Taiwan, ROC; Department of Medical Research, Chung Shan Medical University Hospital, No. 110, Jianguo North Road, Section 1, Taichung 40203, Taiwan, ROC
| | - Hsing-Yu Wu
- Department of Biomedical Sciences, Chung Shan Medical University, No. 110, Jianguo North Road, Section 1, Taichung 40203, Taiwan, ROC; Department of Medical Research, Chung Shan Medical University Hospital, No. 110, Jianguo North Road, Section 1, Taichung 40203, Taiwan, ROC
| | - Yi-Ju Lee
- Institute of Microbiology and Immunology, Chung Shan Medical University, No. 110, Jianguo North Road, Section 1, Taichung 40203, Taiwan, ROC
| | - Ho-Yiu Wong
- Department of Internal Medicine, China Medical University and Beigang Hospital, 123, Sinde Road, Beigang Township, Yunlin County 65152, Taiwan, ROC
| | - Min-Jen Tseng
- Institute of Molecular Biology, National Chung Cheng University, 168 University Road, Minhsiung Township, Chiayi County 62102, Taiwan, ROC
| | - Ting-Hui Lin
- Department of Biomedical Sciences, Chung Shan Medical University, No. 110, Jianguo North Road, Section 1, Taichung 40203, Taiwan, ROC; Department of Medical Research, Chung Shan Medical University Hospital, No. 110, Jianguo North Road, Section 1, Taichung 40203, Taiwan, ROC.
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Hsiao YW, Li CF, Chi JY, Tseng JT, Chang Y, Hsu LJ, Lee CH, Chang TH, Wang SM, Wang DDH, Cheng HC, Wang JM. CCAAT/enhancer binding protein δ in macrophages contributes to immunosuppression and inhibits phagocytosis in nasopharyngeal carcinoma. Sci Signal 2013; 6:ra59. [PMID: 23861541 DOI: 10.1126/scisignal.2003648] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Although tumors tend to be associated with immune cells and inflammation, this immune response often fails to eliminate the cancer and instead promotes cancer progression. Tumor-associated macrophages (TAMs) fail to phagocytose tumor cells, and they also produce signals that suppress the adaptive immune response. We showed that immunosuppressive prostaglandin E₂ (PGE₂) led to the production and activity of the transcription factor CCAAT/enhancer binding protein δ (C/EBPδ) by stimulating the nucleocytoplasmic shuttling of the RNA binding protein Hu antigen R (HuR), which bound to and stabilized CEBPD mRNA in macrophages. An increase in C/EBPδ abundance in macrophages in response to PGE₂ resulted in enhanced production of the immunosuppressive cytokine interleukin-10 (IL-10) and of pentraxin 3 (PTX3), which suppresses the ability of macrophages to phagocytose tumor cells. Furthermore, conditioned medium from C/EBPδ-replete, but not C/EBPδ-deficient, macrophages inhibited the phagocytosis of tumor cells by macrophages, suggesting an autocrine mode of regulation. Immunohistochemical analysis demonstrated that the amount of cytosolic HuR protein correlated with increased C/EBPδ abundance in TAMs in malignant nasopharyngeal carcinoma. Together, these data suggest that the inflammatory PGE₂-HuR-C/EBPδ axis in macrophages promotes tumor progression by preventing the phagocytosis of tumor cells and inducing immunosuppressive cytokine production.
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Affiliation(s)
- Yu-Wei Hsiao
- Institute of Bioinformatics and Biosignal Transduction, National Cheng Kung University, Tainan 701, Taiwan, ROC
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Chang CL, Li IC, Chiu CY, Chi JY, Jian SR, Wu CL. Abstract 2543: A dual-fluorescent reporter system facilitates identification of thiol compounds that suppress oxidative frameshift mutations. Cancer Res 2012. [DOI: 10.1158/1538-7445.am2012-2543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
DNA mismatch repair (MMR) system corrects replicative errors, especially in microsatellites, and minimizes mutations caused by DNA-damaging agents. Patients with chronic and cancer-associated inflammation display microsatellite instability (MSI), indicative of an inactivated MMR system. MMR-deficient patients also display frameshift mutations in coding microsatellites of many genes, including oncogenes and tumor suppressors. We previously reported that oxidative stress, which occurs in the inflammatory settings, not only inactivates the MMR function but also increases accumulation of frameshift mutations. However, it remains unclear whether oxidative frameshift mutations are preventable due to the lack of a sufficiently sensitive detection assay. Here, we developed and characterized a dual-fluorescent system, utilizing RFP harboring the (CA)13 microsatellite as a reporter and GFP for normalization, in near-isogeneic human colorectal cancer cell lines. By flow cytometry, the new reporter sensitively detected a low level of H2O2-induced frameshift mutations in MMR-proficient cells. Without a functional MMR system, 0.5 mM H2O2 increased frameshift mutations by approximately 10 folds in the cells. In MMR-deficient cells, our reporter revealed that 5 mM glutathione or N-acetylcysteine suppressed oxidative frameshift mutations by approximately 75% or 90% respectively, without affecting cell viability. In contrast, 0.5 mM ascorbic acid augmented H2O2-induced frameshift mutations by two folds, whereas 1 mM aspirin had no effects. Glutathione and N-acetylcysteine also partially suppressed oxidative frameshift mutations in coding microsatellites of endogenous hMSH6 and CHK1 genes, determined by a fluorescinated PCR-based assay. The new utility of these thiol compounds is potentially valuable for preventing oxidative frameshift mutations in the inflammatory settings. The dual-fluorescent reporter system with improved sensitivity will facilitate identification of additional compounds that modulate frameshift mutations relevant to cancer initiation and progression.
Citation Format: {Authors}. {Abstract title} [abstract]. In: Proceedings of the 103rd Annual Meeting of the American Association for Cancer Research; 2012 Mar 31-Apr 4; Chicago, IL. Philadelphia (PA): AACR; Cancer Res 2012;72(8 Suppl):Abstract nr 2543. doi:1538-7445.AM2012-2543
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Affiliation(s)
| | - I-Chen Li
- 1National Cheng Kung University, Tainan, Taiwan
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Chang CL, Chiu CY, Chi JY, Wu CLWCL, Li IC, Jian SR. Abstract 3899: Anti-cancer drugs increases microsatellite instability in human colorectal cancer cells. Cancer Res 2011. [DOI: 10.1158/1538-7445.am2011-3899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Manifested as microsatellite instability (MSI), DNA mismatch repair (MMR) deficiency is known to contribute to colorectal cancer pathogenesis and drug resistance. Growing evidence indicates that MMR deficiency is also widespread among secondary cancers in patients who have received chemotherapy. It is unclear what chemotherapeutic agents cause MMR deficiency. In this study, we aim at identifying the MSI-inducing anti-cancer drugs. To facilitate the identification, we developed an in-vivo dual fluorescent reporter system in a human colorectal cancer cell model using RFP that contains a microsatellite as the MSI reporter and GFP as the cell label. Based on flow cytometric analysis, we found that test anti-cancer drugs increased the MSI frequency in a dose-dependent manner. This was confirmed by fluorescent microscopy. With the NCI recommended markers, we detected a low frequency of MSI in cells after treated with a couple, but not all, of test anti-cancer drugs. Our cell-based MSI reporter assay will facilitate large scale screens of MSI-inducing and MSI-reducing drugs/compounds, which might provide treatment strategies for controlling therapy-related secondary cancers.
Citation Format: {Authors}. {Abstract title} [abstract]. In: Proceedings of the 102nd Annual Meeting of the American Association for Cancer Research; 2011 Apr 2-6; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2011;71(8 Suppl):Abstract nr 3899. doi:10.1158/1538-7445.AM2011-3899
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Affiliation(s)
| | | | | | | | - I-Chen Li
- 1National Cheng Kung University, Tainan, Taiwan
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Liu BH, Chi JY, Hsiao YW, Tsai KD, Lee YJ, Lin CC, Hsu SC, Yang SM, Lin TH. The fungal metabolite, citrinin, inhibits lipopolysaccharide/interferon-γ-induced nitric oxide production in glomerular mesangial cells. Int Immunopharmacol 2010; 10:1608-15. [DOI: 10.1016/j.intimp.2010.09.017] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2010] [Revised: 09/23/2010] [Accepted: 09/23/2010] [Indexed: 02/07/2023]
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Peng PC, Lin CT, Kuo HC, Tsai WK, Liu JN, Chi S, Wang SC, Lin G, Yang HP, Lin KF, Chi JY. Tunable slow light device using quantum dot semiconductor laser. Opt Express 2006; 14:12880-12886. [PMID: 19532181 DOI: 10.1364/oe.14.012880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
This investigation experimentally demonstrates a tunable slow light device using a quantum dot (QD) semiconductor laser. The QD semiconductor laser at 1.3 mum fabricated on a GaAs substrate is grown by molecular beam epitaxy. Tunable slow light can be achieved by adjusting the bias current and wavelength detuning. The slow light device operated under probe signal from 5 to 10 GHz is presented. Moreover, we also demonstrate that the tunable slow light device can be used in a subcarrier multiplexed system.
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Peng PC, Kuo HC, Tsai WK, Chang YH, Lin CT, Chi S, Wang SC, Lin G, Yang HP, Lin KF, Yu HC, Chi JY. Dynamic characteristics of long-wavelength quantum dot vertical-cavity surface-emitting lasers with light injection. Opt Express 2006; 14:2944-2949. [PMID: 19516433 DOI: 10.1364/oe.14.002944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
This investigation experimentally demonstrates the dynamic characteristics of quantum dot vertical-cavity surface-emitting lasers (QD VCSEL) without and with light injection. The QD VCSEL is fully doped structure on GaAs substrate and operates in the 1.3 mum optical communication wavelength. The eye diagram, frequency response, and intermodulation distortion are presented. We also demonstrate that the frequency response enhancement by light injection technique allows us to improve the performance of subcarrier multiplexed system.
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Charbonneau S, Steiner T, Thewalt ML, Koteles ES, Chi JY, Elman B. Optical investigation of biexcitons and bound excitons in GaAs quantum wells. Phys Rev B Condens Matter 1988; 38:3583-3586. [PMID: 9946716 DOI: 10.1103/physrevb.38.3583] [Citation(s) in RCA: 32] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Broido DA, Koteles ES, Jagannath C, Chi JY. Resonance broadening of the light-hole exciton in GaAs/AlxGa. Phys Rev B Condens Matter 1988; 37:2725-2728. [PMID: 9944837 DOI: 10.1103/physrevb.37.2725] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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Jagannath C, Koteles ES, Lee J, Chen YJ, Elman BS, Chi JY. Uniaxial stress dependence of spatially confined excitons. Phys Rev B Condens Matter 1986; 34:7027-7030. [PMID: 9939355 DOI: 10.1103/physrevb.34.7027] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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Bassel BA, Walsh EC, Chi JY, Curry ME, Brown JG. Translation of Pseudomonas aeruginosa bacteriophage PP7 RNA by a cell-free amino acid incorporating system from Escherichia coli. J Virol 1974; 13:1326-30. [PMID: 4208879 PMCID: PMC355452 DOI: 10.1128/jvi.13.6.1326-1330.1974] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
We have compared the activities of the RNA genomes of Pseudomonas aeruginosa phage PP7 and coliphages Qbeta and f2 in a cell-free amino acid incorporating system derived from Escherichia coli. The rate of incorporation of [(14)C]leucine in the PP7 RNA-directed system is greater than in the systems directed by either Qbeta or f2 RNA. The response to changes in phage RNA concentrations is similar in all the systems, reaching a saturation level at 0.75 to 1.0 mg of RNA per ml of reaction mixture. Analysis of complete reaction mixtures of the PP7 RNA and of the Qbeta RNA systems by sucrose gradient centrifugation shows generally similar patterns for both RNAs. The principal differences are that in the PP7 system a slightly higher percentage of RNA forms ribosome complexes and that the polysomes are somewhat smaller. PP7 RNA is also degraded more extensively during the reaction than is Qbeta RNA. Analysis of the products of the reactions by acrylamide gel electrophoresis shows that PP7 coat protein is the only identifiable product of the PP7 RNA-directed system, suggesting that only the coat protein cistron is translated by E. coli ribosomes.
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