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Administration of Iodine-125 Seeds Promotes Apoptosis in Cholangiocarcinoma through the PI3K/Akt Pathway. ADVANCES IN POLYMER TECHNOLOGY 2022. [DOI: 10.1155/2022/6934934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Purpose. We aimed to examine the effects of 125I seeds on the gene expression of Bcl-2, Bax, and PI3K/Akt pathway components in cholangiocarcinoma cells. Methods. In vitro, human cholangiocarcinoma RBE cells were treated with 125I seeds (0.39 mCi or 0.85 mCi) for 72 h, 120 h, and 168 h. Cell proliferation and apoptosis were assessed. The expression of Bcl-2 and Bax was detected by RT-PCR, and Western blotting was carried out to explore changes in Akt activity. Result. 125I seeds inhibited the proliferation of RBE cells. The apoptosis rate of the RBE cells in the low-activity group was significantly higher than that in the high-activity group at 120 h and 168 h, while no difference was found between the two groups at 72 h. After 120 h of culture, the gene expression of Bcl-2 and Bax decreased in both groups, the ratio of
in the low-activity group decreased, and the PI3K/Akt signaling pathway was inhibited in both groups. Conclusion. 125I seeds affect the proliferation and apoptosis of cholangiocarcinoma cells in a dose-dependent manner. The therapeutic effect of low-activity 125I seeds on cancer cells may be better. 125I seed brachytherapy may promote the apoptosis of cholangiocarcinoma cells by inhibiting the PI3K/Akt signaling pathway and regulating the
ratio.
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Ren F, Li B, Wang C, Wang Y, Cui B. Iodine-125 seed represses the growth and facilitates the apoptosis of colorectal cancer cells by suppressing the methylation of miR-615 promoter. BMC Cancer 2022; 22:49. [PMID: 34998382 PMCID: PMC8742920 DOI: 10.1186/s12885-021-09141-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 12/21/2021] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND Colorectal cancer (CRC) represents a common malignancy in gastrointestinal tract. Iodine-125 (125I) seed implantation is an emerging treatment technology for unresectable tumors. This study investigated the mechanism of 125I seed in the function of CRC cells. METHODS The CRC cells were irradiated with different doses of 125I seed (0.4, 0.6 and 0.8 mCi). miR-615 expression in CRC tissues and adjacent tissues was detected by RT-qPCR. miR-615 expression was intervened with miR-615 mimic or miR-615 inhibitor, and then the CRC cells were treated with 5-AZA (methylation inhibitor). The CRC cell growth, invasion and apoptosis were measured. The methylation level of miR-615 promoter region was detected. The xenograft tumor model irradiated by 125I seed was established in nude mice. The methylation of miR-615, Ki67 expression and CRC cell apoptosis were detected. RESULTS 125I seed irradiation repressed the growth and facilitated apoptosis of CRC cells in a dose-dependent manner. Compared with adjacent tissues, miR-615 expression in CRC tissues was downregulated and miR-615 was poorly expressed in CRC cells. Overexpression of miR-615 suppressed the growth of CRC cells. 125I seed-irradiated CRC cells showed increased miR-615 expression, reduced growth rate and enhanced apoptosis. The methylation level of miR-615 promoter region in CRC cells was decreased after 125I seed treatment. In vivo experiments confirmed that 125I seed-irradiated xenograft tumors showed reduced methylation of the miR-615 promoter and increased miR-615 expression, as well as decreased Ki67 expression and enhanced apoptosis. The target genes of miR-615 and its regulatory downstream pathway were further predicted by bioinformatics analysis. CONCLUSIONS 125I seed repressed the growth and facilitated the apoptosis of CRC cells by suppressing the methylation of the miR-615 promoter and thus activating miR-615 expression. The possible mechanism was that miR-615-5p targeted MAPK13, thus affecting the MAPK pathway and the progression of CRC.
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Affiliation(s)
- Fenghai Ren
- Department of Thoracic Surgery, Harbin Medical University Cancer Hospital, Harbin, 150081, Heilongjiang, China
| | - Baojun Li
- Department of Head and Neck Surgery, Harbin Medical University Cancer Hospital, Harbin, 150081, Heilongjiang, China
| | - Chao Wang
- Department of Prenatal Diagnosis, The 2nd Affiliated Hospital of Harbin Medical University, Harbin, 150081, Heilongjiang, China
| | - Yanbo Wang
- Department of Thoracic Surgery, Harbin Medical University Cancer Hospital, Harbin, 150081, Heilongjiang, China
| | - Binbin Cui
- Department of Colorectal Surgery, Harbin Medical University Cancer Hospital, 150 Haping Road, Harbin, 150081, Heilongjiang, China.
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Li P, Fan J, Zhang K, Wang J, Hu M, Yang S, Xing C, Yuan Q. Interstitial 125I Brachytherapy as a Salvage Treatment for Refractory Cervical Lymph Node Metastasis of Thoracic Esophageal Squamous Cell Carcinoma After External Irradiation With a CT-Guided Coplanar Template-Assisted Technique: A Retrospective Study. Technol Cancer Res Treat 2022; 21:15330338221103102. [PMID: 35656785 PMCID: PMC9168871 DOI: 10.1177/15330338221103102] [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] [Indexed: 12/24/2022] Open
Abstract
Purpose: To analyze the outcome and prognosis of patients with
refractory cervical lymph node metastasis of thoracic esophageal squamous cell
carcinoma after external irradiation, who underwent interstitial 125I
brachytherapy as a salvage treatment with a CT-guided coplanar template-assisted
technique. We also want to compare the dosimetry of 3D printed coplanar
template-assisted interstitial 125I brachytherapy preoperative and
postoperative, and to explore the accuracy of this technology. Material
and methods: We retrospectively collected and analyzed the results of
32 patients with refractory cervical lymph node metastasis of thoracic
esophageal squamous cell carcinoma after external irradiation, who underwent
interstitial 125I brachytherapy as a salvage treatment with a
CT-guided coplanar template-assisted technique from January 2012 to December
2017. Results: The actual D90 were 114 to 240 Gy, and the median
postoperative dosimetry assessment was 177.5 Gy. The local control rates at 3,
6, 9, and 12 months were 87.5%, 59.38%, 40.63%, and 31.25%, respectively. The
median local control time was 7.5 months. The median overall survival time was
10.5 months (95% CI, 8.9-13.4), and the survival rates of 1- and 2-year,
respectively, were 43.75% and 9.38%. There were 36 lesions in 32 patients. By
performing a paired t-test analysis, there was no significant
difference in D90, D100, V100, V150, V200, GTV volume, CI, EI, and HI between
preoperative and postoperative (P > .05).
Conclusions: Interstitial 125I brachytherapy can be
used as a salvage treatment for patients with refractory cervical lymph node
metastasis of thoracic esophageal squamous cell carcinoma after external
irradiation. With the auxiliary function of 3D printed coplanar template, the
main dosimetry parameters verified after the operation can meet the requirements
of the preoperative plan with good treatment accuracy.
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Affiliation(s)
- Peishun Li
- Department of Oncology, Tengzhou Central People’s Hospital,
Shandong, China
| | - Jing Fan
- Department of Oncology, Tengzhou Central People’s Hospital,
Shandong, China
| | - Kaixian Zhang
- Department of Oncology, Tengzhou Central People’s Hospital,
Shandong, China
- Kaixian Zhang, Department of Oncology,
Tengzhou Central People's Hospital, Tengzhou, Shandong 277599, China.
| | - Junjie Wang
- Department of Radiation Oncology, Peking University 3rd
Hospital, Beijing, P. R. China
- Junjie Wang, Department of Radiation
Oncology, Peking University 3rd Hospital, Beijing 100191, P. R. China.
| | - Miaomiao Hu
- Department of Oncology, Tengzhou Central People’s Hospital,
Shandong, China
| | - Sen Yang
- Department of Oncology, Tengzhou Central People’s Hospital,
Shandong, China
| | - Chao Xing
- Department of Oncology, Tengzhou Central People’s Hospital,
Shandong, China
| | - Qianqian Yuan
- Department of Oncology, Tengzhou Central People’s Hospital,
Shandong, China
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Jiao D, Zhou X, Yao Y, Chen J, Lei Q, Ren J, Han X. 125I seed implantation brachytherapy for glottic carcinoma: an experimental and clinical study. Am J Cancer Res 2021; 11:1321-1334. [PMID: 33948360 PMCID: PMC8085880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Accepted: 02/22/2021] [Indexed: 06/12/2023] Open
Abstract
125I seed implantation brachytherapy (ISIB) is the preferred treatment for prostate cancer. Is ISIB technically suitable for glottic carcinoma (GC)? This question has not been answered in the literature; thus, the present study was carried out to evaluate the feasibility and effect of ISIB on GC in animal and clinical studies. An animal model of Tu-212 cell laryngeal carcinoma xenografts (n = 20 animals) underwent ISIB treatments [experimental group (EG) using 0.8-mCi/seed, control group (CG) using 0-mCi/seed]; at 4 weeks, haematoxylin-eosin (HE) staining was performed, and the mRNA and protein expression of Bax, Bcl-2 and PCNA was analysed. Moreover, thirty healthy beagle dogs underwent ISIB under CT guidance (EG, 0.8 mCi/seed, CG, 0 mCi/seed), and injuries to the normal tissue were analysed by HE and Masson staining at 2, 4, and 8 weeks. Finally, twenty-one GC patients (T2-3N0M0) underwent percutaneous ISIB at a mean prescription dose of 116.8 Gy; the technical success, complications, local tumour response, voice quality, local progression and overall survival were analysed. The results showed that the xenograft tumours were significantly inhibited in the EG. The Bax protein levels were significantly increased in this group (P<0.05), while the Bcl-2 and PCNA protein levels were decreased (P<0.05). Moreover, the glottic injury scores increased with the dose accumulation (P<0.05), while the adjacent tissue did not show pathohistological injury, and the routine blood tests showed no change between the pre-treatment baseline levels and the levels 2, 4, or 8 weeks later (P>0.05). The clinical study found that the rate of technical success was 100% with no procedure-related complications; furthermore, complete response was achieved in all patients, and no local progression occurred. All patients survived and showed improvements in their voice quality (P<0.05) during the follow-up period (median 23.5 months). The results show that ISIB is a safe and effective treatment for GC; randomized controlled trials are needed to further evaluate its clinical efficacy.
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Affiliation(s)
- Dechao Jiao
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University Zhengzhou, China
| | - Xueliang Zhou
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University Zhengzhou, China
| | - Yuan Yao
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University Zhengzhou, China
| | - Jianjian Chen
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University Zhengzhou, China
| | - Qinyu Lei
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University Zhengzhou, China
| | - Jianzhuang Ren
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University Zhengzhou, China
| | - Xinwei Han
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University Zhengzhou, China
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Li D, Wang WJ, Wang YZ, Wang YB, Li YL. Lobaplatin promotes 125I-induced apoptosis and inhibition of proliferation in hepatocellular carcinoma by upregulating PERK-eIF2α-ATF4-CHOP pathway. Cell Death Dis 2019; 10:744. [PMID: 31582720 PMCID: PMC6776519 DOI: 10.1038/s41419-019-1918-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 08/08/2019] [Accepted: 08/26/2019] [Indexed: 12/14/2022]
Abstract
We investigated the mechanism underlying the effect of a combination treatment of 125I radioactive seed implantation and lobaplatin (LBP) in hepatocellular carcinoma. The effects of administration of HCC cells and subcutaneous tumor model of mice with different doses of 125I or a sensitizing concentration of LBP alone, or in combination, on cellular apoptosis and proliferation were analyzed and it was confirmed that LBP promotes 125I-induced apoptosis and inhibition of proliferation of HCC. Furthermore, isobaric tag for relative and absolute quantification labeling analyses suggested that 125I promoted the apoptosis and inhibition of proliferation of HCC cells by upregulating the expression of PERK-eIF2α-ATF4-CHOP pathway, a well-known apoptosis-related pathway. Moreover, LBP was found to boost the 125I-induced upregulation of this pathway and increase the apoptosis. Our data indicate that LBP promotes the apoptotic and anti-proliferative effects of 125I and provide a firm foundation for better clinical application of this combination therapy.
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Affiliation(s)
- Dong Li
- Department of Interventional Medicine, The Second Hospital of Shandong University, Jinan, China
| | - Wu-Jie Wang
- Department of Interventional Medicine, The Second Hospital of Shandong University, Jinan, China
| | - Yong-Zheng Wang
- Department of Interventional Medicine, The Second Hospital of Shandong University, Jinan, China
| | - Yi-Biao Wang
- Department of Pediatrics, The Second Hospital of Shandong University, Jinan, China
| | - Yu-Liang Li
- Department of Interventional Medicine, The Second Hospital of Shandong University, Jinan, China.
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Zhu Y, Dong M, Yang J, Zhang J. Evaluation of Iodine-125 Interstitial Brachytherapy Using Micro-Positron Emission Tomography/Computed Tomography with 18F-Fluorodeoxyglucose in Hepatocellular Carcinoma HepG2 Xenografts. Med Sci Monit 2019; 25:371-380. [PMID: 30636171 PMCID: PMC6339452 DOI: 10.12659/msm.912590] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Iodine-125 interstitial brachytherapy (125I-IBT) is a promising treatment option for unresectable hepatocellular carcinoma (HCC). This study evaluated the usefulness of micro-positron emission tomography/computed tomography (micro-PET/CT) with 18F-fluorodeoxyglucose (18F-FDG) in assessing response to 125I-IBT in HCC HepG2 xenograft. MATERIAL AND METHODS Twelve mice with bilateral HepG2 xenografts were divided into 3 equal groups implanted with iodine-125 seeds into the left xenografts with a dose of 30, 50, and 80 Gy, respectively, and the right xenografts were used as internal controls. Before and 28 days after treatment, the 18F-FDG micro-PET/CT was performed. The ratios of left to right xenografts of tumor volume (RTV), maximum standardized uptake value (RSUVmax), mean optical density of caspase-3 expression (RMODcaspase-3), and apoptosis index (RAI) were compared. RESULTS The RTV means of the 50 and 80 Gy groups were significantly lower than in the 30 Gy group after treatment (P<0.01) and the RTV means after treatment were lower than baseline in the 50 and 80 Gy groups (P<0.05). The RSUVmax mean after treatment was lower than baseline in the 80 Gy group (P<0.05). The RMODCaspase-3 and RAI means of the 80 Gy group were higher than in the 30 Gy group (P<0.05). The RSUVmax was correlated negatively to RMODcaspase-3 (r=-0.624, P<0.05) and RAI (r=-0.651, P<0.05). CONCLUSIONS This study suggest that 125I-IBT inhibits tumor growth via upregulating caspase-3 expression and prompting apoptosis in HCC HepG2 xenografts. The 18F-FDG micro-PET/CT may be a useful functional imaging modality to assess early response to 125I-IBT in HCC HepG2 xenograft.
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Affiliation(s)
- Yangjun Zhu
- Department of Ultrasonography, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China (mainland)
| | - Mengjie Dong
- Department of Nuclear Medicine, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China (mainland)
| | - Jun Yang
- Department of Nuclear Medicine, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China (mainland)
| | - Jun Zhang
- Department of Nuclear Medicine, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China (mainland)
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Zhang J, Zhu Y, Dong M, Yang J, Weng W, Teng L. Iodine-125 interstitial brachytherapy reduces tumor growth via Warburg effect inhibition in non-small cell lung cancer A549 ×enografts. Oncol Lett 2018; 16:5969-5977. [PMID: 30344747 PMCID: PMC6176348 DOI: 10.3892/ol.2018.9346] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Accepted: 08/10/2018] [Indexed: 11/16/2022] Open
Abstract
Iodine-125 interstitial brachytherapy (125I-IBT) is an alternative and effective treatment option for unresectable non-small cell lung cancer (NSCLC), and the Warburg effect is a determinant of tumor growth. The present study aimed to explore the influence of 125I-IBT on tumor growth and the Warburg effect, and the potential mechanisms underlying NSCLC progression. Mice with A549 cell xenografts were evenly divided into a control group without 125I-IBT, and three treatment groups receiving 125I-IBT with 20, 40 and 60 Gy. Tumor volume (TV), maximum standardized uptake value (SUVmax) determined by 18F-fluorodeoxyglucose (18F-FDG) micro-positron emission tomography/computed tomography and mean optical density (MOD) of mammalian target of rapamycin (mTOR), c-Myc, hypoxia inducible factor-1α (HIF-1α) and glucose transporter 1 (GLUT1) staining were compared among groups. Tumor inhibition rate (TIR), 18F-FDG uptake attenuation rate (FUAR) and expression suppression rate (ESR) were also calculated on day 14 and 28. The results demonstrated that the mean TV in the 60 and 40 Gy groups was smaller compared with the control TVs since days 14 and 16, respectively. The mean SUVmax value of the 60 Gy group at day 14, and all treatment group SUVmax values at day 28 were lower compared with the controls. In addition, the MOD of mTOR and GLUT1 was lower in the 60 Gy group, compared with the other groups, and c-Myc and HIF-1α values were lower in the 40 and 60 Gy groups, compared with the control and 20 Gy group (P<0.05). SUVmax positively correlated to TV (day 14, r=0.711; day 28, r=0.586) and the MOD of c-Myc and GLUT1 (r=0.621 and 0.546, respectively; P<0.01). Furthermore, dose dependent increases were observed for TIR, FUAR and ESR. In conclusion, 125I-IBT reduced tumor growth by inhibiting the Warburg effect, which may have resulted from downregulation of mTOR, c-Myc, HIF-1α and GLUT1 expression, particularly c-Myc and GLUT1, in NSCLC A549 ×enografts.
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Affiliation(s)
- Jun Zhang
- Department of Nuclear Medicine, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
| | - Yangjun Zhu
- Department of Ultrasonography, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
| | - Mengjie Dong
- Department of Nuclear Medicine, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
| | - Jun Yang
- Department of Nuclear Medicine, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
| | - Wanwen Weng
- Department of Nuclear Medicine, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
| | - Lisong Teng
- Department of Surgical Oncology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China.,Key Laboratory of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Tumor of Zhejiang Province, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
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Overmiller AM, McGuinn KP, Roberts BJ, Cooper F, Brennan-Crispi DM, Deguchi T, Peltonen S, Wahl JK, Mahoney MG. c-Src/Cav1-dependent activation of the EGFR by Dsg2. Oncotarget 2018; 7:37536-37555. [PMID: 26918609 PMCID: PMC5122330 DOI: 10.18632/oncotarget.7675] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Accepted: 01/25/2016] [Indexed: 12/31/2022] Open
Abstract
The desmosomal cadherin, desmoglein 2 (Dsg2), is deregulated in a variety of human cancers including those of the skin. When ectopically expressed in the epidermis of transgenic mice, Dsg2 activates multiple mitogenic signaling pathways and increases susceptibility to tumorigenesis. However, the molecular mechanism responsible for Dsg2-mediated cellular signaling is poorly understood. Here we show overexpression as well as co-localization of Dsg2 and EGFR in cutaneous SCCs in vivo. Using HaCaT keratinocytes, knockdown of Dsg2 decreases EGFR expression and abrogates the activation of EGFR, c-Src and Stat3, but not Erk1/2 or Akt, in response to EGF ligand stimulation. To determine whether Dsg2 mediates signaling through lipid microdomains, sucrose density fractionation illustrated that Dsg2 is recruited to and displaces Cav1, EGFR and c-Src from light density lipid raft fractions. STED imaging confirmed that the presence of Dsg2 disperses Cav1 from the cell-cell borders. Perturbation of lipid rafts with the cholesterol-chelating agent MβCD also shifts Cav1, c-Src and EGFR out of the rafts and activates signaling pathways. Functionally, overexpression of Dsg2 in human SCC A431 cells enhances EGFR activation and increases cell proliferation and migration through a c-Src and EGFR dependent manner. In summary, our data suggest that Dsg2 stimulates cell growth and migration by positively regulating EGFR level and signaling through a c-Src and Cav1-dependent mechanism using lipid rafts as signal modulatory platforms.
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Affiliation(s)
- Andrew M Overmiller
- Department of Dermatology and Cutaneous Biology, Thomas Jefferson University, Philadelphia, PA, USA
| | - Kathleen P McGuinn
- Department of Dermatology and Cutaneous Biology, Thomas Jefferson University, Philadelphia, PA, USA
| | - Brett J Roberts
- Department of Oral Biology, University of Nebraska Medical Center, Lincoln, NE, USA
| | - Felicia Cooper
- Department of Dermatology and Cutaneous Biology, Thomas Jefferson University, Philadelphia, PA, USA
| | - Donna M Brennan-Crispi
- Department of Dermatology and Cutaneous Biology, Thomas Jefferson University, Philadelphia, PA, USA.,Department of Biochemistry and Molecular Biology, Thomas Jefferson University, Philadelphia, PA, USA
| | - Takahiro Deguchi
- Laboratory of Biophysics, Department of Cell Biology and Anatomy, University of Turku, Turku, Finland
| | - Sirkku Peltonen
- Department of Dermatology, University of Turku and Turku Hospital, Turku, Finland
| | - James K Wahl
- Department of Oral Biology, University of Nebraska Medical Center, Lincoln, NE, USA
| | - Mỹ G Mahoney
- Department of Dermatology and Cutaneous Biology, Thomas Jefferson University, Philadelphia, PA, USA.,Department of Biochemistry and Molecular Biology, Thomas Jefferson University, Philadelphia, PA, USA
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Han Q, Deng M, Lv Y, Dai G. Survival of patients with advanced pancreatic cancer after iodine125 seeds implantation brachytherapy: A meta-analysis. Medicine (Baltimore) 2017; 96:e5719. [PMID: 28151849 PMCID: PMC5293412 DOI: 10.1097/md.0000000000005719] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Brachytherapy with iodine-labeled seeds (I-seeds) implantation is increasingly being used to treat tumors because of its positional precision, minimal invasion, least damage to noncancerous tissue due to slow and continuous release of radioactivity and facilitation with modern medical imaging technologies. This study evaluates the survival and pain relief outcomes of the I-seeds implantation brachytherapy in advanced pancreatic cancer patients. METHODS Literature search was carried out in multiple electronic databases (Google Scholar, Embase, Medline/PubMed, and Ovid SP) and studies reporting I seeds implantation brachytherapy in pancreatic cancer patients with unresectable tumor were selected by following predetermined eligibility criteria. Random effects meta-analysis was performed to achieve inverse variance weighted effect size of the overall survival rate after the intervention. Sensitivity and subgroups analyses were also carried out. RESULTS Twenty-three studies (824 patients' data) were included in the meta-analysis. I-seeds implantation brachytherapy alone was associated with 8.98 [95% confidence interval (CI): 6.94, 11.03] months (P < 0.00001) overall survival with 1-year survival of 25.7 ± 9.3% (mean ± standard deviation; SD) and 2-year survival was 17.9 ± 8.6% (mean ± SD). In stage IV pancreatic cancer patients, overall survival was 7.13 [95% CI: 4.75, 9.51] months (P < 0.00001). In patients treated with I-seeds implantation along with 1 or more therapies, overall survival was 11.75 [95% CI: 9.84, 13.65] months (P < 0.00001) with 1-year survival of 47.4 ± 22.75% (mean ± SD) and 2-year survival was 16.97 ± 3.1% (mean ± SD). I-seeds brachytherapy was associated with relief of pain in 79.7 ± 9.9% (mean ± SD) of the patients. CONCLUSIONS Survival of pancreatic cancer patients after I-seeds implantation brachytherapy is found to be 9 months, whereas a combined treatment with I-seeds brachytherapy and other therapies was associated with approximately 12 months' survival. The majority of patients who underwent I-seeds brachytherapy had their pain relieved.
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The Protective Roles of ROS-Mediated Mitophagy on 125I Seeds Radiation Induced Cell Death in HCT116 Cells. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2016; 2016:9460462. [PMID: 28119765 PMCID: PMC5227180 DOI: 10.1155/2016/9460462] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/17/2016] [Revised: 11/18/2016] [Accepted: 11/24/2016] [Indexed: 11/17/2022]
Abstract
For many unresectable carcinomas and locally recurrent cancers (LRC), 125I seeds brachytherapy is a feasible, effective, and safe treatment. Several studies have shown that 125I seeds radiation exerts anticancer activity by triggering DNA damage. However, recent evidence shows mitochondrial quality to be another crucial determinant of cell fate, with mitophagy playing a central role in this control mechanism. Herein, we found that 125I seeds irradiation injured mitochondria, leading to significantly elevated mitochondrial and intracellular ROS (reactive oxygen species) levels in HCT116 cells. The accumulation of mitochondrial ROS increased the expression of HIF-1α and its target genes BINP3 and NIX (BINP3L), which subsequently triggered mitophagy. Importantly, 125I seeds radiation induced mitophagy promoted cells survival and protected HCT116 cells from apoptosis. These results collectively indicated that 125I seeds radiation triggered mitophagy by upregulating the level of ROS to promote cellular homeostasis and survival. The present study uncovered the critical role of mitophagy in modulating the sensitivity of tumor cells to radiation therapy and suggested that chemotherapy targeting on mitophagy might improve the efficiency of 125I seeds radiation treatment, which might be of clinical significance in tumor therapy.
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11
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125I Seeds Radiation Induces Paraptosis-Like Cell Death via PI3K/AKT Signaling Pathway in HCT116 Cells. BIOMED RESEARCH INTERNATIONAL 2016; 2016:8145495. [PMID: 28078301 PMCID: PMC5204104 DOI: 10.1155/2016/8145495] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/28/2016] [Revised: 10/28/2016] [Accepted: 11/27/2016] [Indexed: 12/19/2022]
Abstract
125I seeds brachytherapy implantation has been extensively performed in unresectable and rerecurrent rectal carcinoma. Many studies on the cancer-killing activity of 125I seeds radiation mainly focused on its ability to trigger apoptosis, which is the most well-known and dominant type of cell death induced by radiation. However our results showed some unique morphological features such as cell swelling, cytoplasmic vacuolation, and plasma membrane integrity, which is obviously different to apoptosis. In this study, clonogenic proliferation was carried out to assay survival fraction. Transmission electron microscopy was used to analyze ultrastructural and evaluate morphologic feature of HCT116 cells after exposure to 125I seeds radiation. Immunofluorescence analysis was used to detect the origin of cytoplasmic vacuoles. Flow cytometry analysis was employed to detect the size and granularity of HCT116 cells. Western blot was performed to measure the protein level of AIP1, caspase-3, AKT, p-Akt (Thr308), p-Akt (Ser473), and β-actin. We found that 125I seeds radiation activated PI3K/AKT signaling pathway and could trigger paraptosis-like cell death. Moreover, inhibitor of PI3K/AKT signaling pathway could inhibit paraptosis-like cell death induced by 125I seeds radiation. Our data suggest that 125I seeds radiation can induce paraptosis-like cell death via PI3K/AKT signaling pathway.
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