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Black CM, Ramakrishnan K, Nadler E, Tseng WY, Wentworth C, Murphy J, Fulcher N, Wang L, Alexander M, Patton G. Real-world study of patients with locally advanced HNSCC in the community oncology setting. Front Oncol 2023; 13:1155893. [PMID: 37664029 PMCID: PMC10472134 DOI: 10.3389/fonc.2023.1155893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 07/21/2023] [Indexed: 09/05/2023] Open
Abstract
Introduction There is a need to understand the current treatment landscape for LA HNSCC in the real-world setting. Methods This retrospective study assessed real-world outcomes and treatment patterns of 1,158 adult patients diagnosed with locally advanced (stage III-IVB) HNSCC initiating chemoradiotherapy (CRT) within the period January 2015 to December 2017 in a large network of US community oncology practices. Structured data were abstracted from electronic health records. Demographic, clinical and treatment characteristics were analyzed descriptively overall and stratified by index treatment (cisplatin + radiotherapy [RT], cisplatin + other chemotherapy + RT, or cetuximab + RT). Time to next treatment (TTNT) and overall survival (OS) were measured using the Kaplan-Meier method, and median duration of treatment was assessed. OS was compared across treatment cohorts using multinomial logistic regression with inverse probability treatment weighting. To identify covariates associated with OS, a multivariable adjusted Cox proportional hazard model was used. Results This study examined 22,782 records, of which 2124 had stage III to stage IVB and no other cancers, and 1158 met all eligibility criteria. Among the treatment cohorts analyzed (cisplatin + RT, cisplatin + other chemotherapy + RT, or cetuximab + RT), cisplatin + RT was the most common concurrent chemotherapy (65.8%). Among 1158 patients, 838 (72.4%) did not initiate subsequent treatment and 139 (12.0%) died. The median TTNT and median OS were only reached by the cetuximab + RT cohort. Among patients with oropharynx primary tumor location, patients with human papilloma virus (HPV) positive status had the longest time on treatment and highest survival at 60 months. Covariates associated with improved survival were never/former tobacco use, HPV positive status, and overweight or obese body mass index. Covariates associated with poorer survival were age of 60+ years, primary tumor location of hypopharynx or oral cavity and Eastern Cooperative Oncology Group performance status score of 2+. Conclusion These data describe real-world treatment patterns in locally advanced head and neck squamous cell cancer and sets the baseline to assess outcomes for future studies on the community oncology population.
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Affiliation(s)
- Christopher M. Black
- Center for Observational and Real-World Evidence, Merck & Co., Inc., Rahway, NJ, United States
| | - Karthik Ramakrishnan
- Center for Observational and Real-World Evidence, Merck & Co., Inc., Rahway, NJ, United States
| | - Eric Nadler
- Texas Oncology, Medical Oncology, Dallas, TX, United States
- Real World Research, Ontada, Boston, MA, United States
| | - Wan-Yu Tseng
- Real World Research, Ontada, Boston, MA, United States
| | | | - John Murphy
- Real World Research, Ontada, Boston, MA, United States
| | | | - Liya Wang
- Center for Observational and Real-World Evidence, Merck & Co., Inc., Rahway, NJ, United States
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Scarborough JA, Scott JG. Translation of Precision Medicine Research Into Biomarker-Informed Care in Radiation Oncology. Semin Radiat Oncol 2022; 32:42-53. [PMID: 34861995 PMCID: PMC8667861 DOI: 10.1016/j.semradonc.2021.09.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The reach of personalized medicine in radiation oncology has expanded greatly over the past few decades as technical precision has improved the delivery of radiation to each patient's unique anatomy. Yet, the consideration of biological heterogeneity between patients has largely not been translated to clinical care. There are innumerable promising advancements in the discovery and validation of biomarkers, which could be used to alter radiation therapy directly or indirectly. Directly, biomarker-informed care may alter treatment dose or identify patients who would benefit most from radiation therapy and who could safely avoid more aggressive care. Indirectly, a variety of biomarkers could assist with choosing the best radiosensitizing chemotherapies. The translation of these advancements into clinical practice will bring radiation oncology even further into the era of precision medicine, treating patients according to their unique anatomical and biological differences.
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Affiliation(s)
- Jessica A Scarborough
- Translational Hematology and Oncology Research Department, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland,OH; Systems Biology and Bioinformatics Program, School of Medicine, Case Western Reserve University, Cleveland, OH
| | - Jacob G Scott
- Translational Hematology and Oncology Research Department, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland,OH; Radiation Oncology Department, Taussig Cancer Institute, Cleveland Clinic Foundation, 10201 Carnegie Ave, Cleveland, OH.
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Molecular and Cellular Mechanisms of Perineural Invasion in Oral Squamous Cell Carcinoma: Potential Targets for Therapeutic Intervention. Cancers (Basel) 2021; 13:cancers13236011. [PMID: 34885121 PMCID: PMC8656475 DOI: 10.3390/cancers13236011] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 11/23/2021] [Accepted: 11/25/2021] [Indexed: 12/11/2022] Open
Abstract
Simple Summary Squamous cell carcinoma is the most common type of oral cavity cancer. It can spread along and invade nerves in a process called perineural invasion. Perineural invasion can increase the chances of tumor recurrence and reduce survival in patients with oral cancer. Understanding how oral cancer interacts with nerves to facilitate perineural invasion is an important area of research. Targeting key events that contribute to perineural invasion in oral cavity cancer may reduce tumor recurrence and improve survival. In this review, we describe the impact of perineural invasion in oral cancer and the mechanisms that contribute to perineural invasion. Highlighting the key events of perineural invasion is important for the identification and testing of novel therapies for oral cancer with perineural invasion. Abstract The most common oral cavity cancer is squamous cell carcinoma (SCC), of which perineural invasion (PNI) is a significant prognostic factor associated with decreased survival and an increased rate of locoregional recurrence. In the classical theory of PNI, cancer was believed to invade nerves directly through the path of least resistance in the perineural space; however, more recent evidence suggests that PNI requires reciprocal signaling interactions between tumor cells and nerve components, particularly Schwann cells. Specifically, head and neck SCC can express neurotrophins and neurotrophin receptors that may contribute to cancer migration towards nerves, PNI, and neuritogenesis towards cancer. Through reciprocal signaling, recent studies also suggest that Schwann cells may play an important role in promoting PNI by migrating toward cancer cells, intercalating, and dispersing cancer, and facilitating cancer migration toward nerves. The interactions of neurotrophins with their high affinity receptors is a new area of interest in the development of pharmaceutical therapies for many types of cancer. In this comprehensive review, we discuss diagnosis and treatment of oral cavity SCC, how PNI affects locoregional recurrence and survival, and the impact of adjuvant therapies on tumors with PNI. We also describe the molecular and cellular mechanisms associated with PNI, including the expression of neurotrophins and their receptors, and highlight potential targets for therapeutic intervention for PNI in oral SCC.
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Postoperative chemoradiotherapy with cisplatin is superior to radioimmunotherapy with cetuximab and radiotherapy alone : Analysis of the Austrian head and neck cancer registry of the AGMT. Wien Klin Wochenschr 2021; 133:1131-1136. [PMID: 34528125 PMCID: PMC8599358 DOI: 10.1007/s00508-021-01939-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 08/11/2021] [Indexed: 12/15/2022]
Abstract
Background The addition of cisplatin or cetuximab to radiotherapy in patients with locally advanced squamous cell carcinoma of the head and neck (SCCHN) has significantly improved the outcome. While the superiority of cisplatin over cetuximab in combination with radiotherapy has been shown in a definitive setting, we set out to compare postoperative chemoradiotherapy with cisplatin to radioimmunotherapy with cetuximab and radiotherapy alone within the Austrian head and neck cancer registry of the Working Group on Pharmaceutical Tumor Treatment (AGMT) study group. Material and methods In the AGMT head and neck cancer registry, data of 557 patients with SCCHN from five Austrian cancer centers were prospectively collected between 2012 and 2017. Of these patients 120 received postoperative chemoradiotherapy with cisplatin, 26 patients received postoperative radioimmunotherapy with cetuximab and 56 patients were treated with adjuvant radiotherapy only. Patient characteristics, stage of disease, details on treatment as well as survival were analyzed by a chart-based review. Results In patients treated with postoperative radiotherapy the addition of cisplatin significantly improved progression-free survival (PFS) and overall survival (OS) compared to cetuximab (PFS 84.2 months vs. 17.0 months, p = 0.04, OS not reached vs. 46.0 months, p = 0.02) and PFS compared to radiotherapy alone (PFS 84.2 months vs. 28.5 months, p < 0.01). Patients treated with cetuximab were significantly older and had a worse performance score than patients receiving cisplatin or radiotherapy alone. Conclusion This study confirmed the importance of multimodal treatment concepts in patients with locally advanced SCCHN. Postoperative cetuximab might be an option in patients not eligible for high-dose cisplatin but cisplatin should remain the standard of care.
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Kapała A, Surwiłło-Snarska A, Jodkiewicz M, Kawecki A. Nutritional Care in Patients with Head and Neck Cancer during Chemoradiotherapy (CRT) and Bioradiotherapy (BRT) Provides Better Compliance with the Treatment Plan. Cancers (Basel) 2021; 13:cancers13112532. [PMID: 34064057 PMCID: PMC8196687 DOI: 10.3390/cancers13112532] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 05/17/2021] [Accepted: 05/20/2021] [Indexed: 12/15/2022] Open
Abstract
Simple Summary The nutritional status of patients with head and neck cancer (HNC) during concurrent chemoradiotherapy (CRT) with platinum derivatives or concurrent radiotherapy with cetuximab (bioradiotherapy, BRT) inevitably deteriorates during treatment. Malnutrition is responsible for increased treatment-related toxicity, an increased incidence of infectious complications, the risk of postponing or discontinuing therapy, reduced drug doses (platinum derivatives or cetuximab), deteriorating quality of life (QoL), worse outcome, and increased treatment costs. A nutritional care programme, which included prophylactic dietary counselling and early enteral nutrition, reduced the incidence of complications and prevented drug dose reduction and the deterioration of patients’ anthropometric and laboratory parameters. The study confirmed that nutritional care before and during CRT and BRT in patients with HNC is a determinant of therapeutic benefit. Abstract The treatment of locally advanced head and neck cancer (HNC) is based on extensive resections followed by concurrent chemoradiotherapy (CRT) with platinum derivatives or concurrent radiotherapy with cetuximab (bioradiotherapy; BRT). Malnutrition, which occurs in up to 60% of patients before treatment commencement, severely increases the risk of CRT/BRT drug dose reductions and the incidence of treatment-related adverse events. A prospective observational study was performed regarding the influence of nutritional care on nutritional status, compliance with the treatment’s planned regimen, and the incidence of treatment-related complications in patients with advanced HNC during CRT and BRT. The study population encompassed 153 patients compared with a retrospective control group of 72 patients treated before nutritional care was included in the standard of oncological care. Patients enrolled in the nutritional care programme received significantly higher doses of platinum derivatives or cetuximab than patients in the control group. A significant difference between the compared populations was observed in patients below 70 years of age (92.8% of the study population), after prior surgery, and with initial weight loss lower than 10%. Nutritional care reduced final weight loss and prevented a decline within the laboratory markers of nutritional status. Weight loss was comparable in both modes of treatment—CRT and BRT. The incidence of treatment-related complications was significantly higher in patients without nutritional support in the subgroups of patients under 70 years of age and after primary surgery. Nutritional care before and during CRT and BRT in patients with HNC is a determinant of therapeutic benefit, defined as preventing down-dosing, weight loss, and the incidence of complications. Platinum derivatives and cetuximab had comparable influence on weight loss.
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Affiliation(s)
- Aleksandra Kapała
- Department of Clinical Nutrition, Head and Neck Cancer Department, Maria Sklodowska-Curie National Research Institute of Oncology, 02781 Warsaw, Poland
- Correspondence: ; Tel.: +48-22-546-3396
| | - Agnieszka Surwiłło-Snarska
- Department of Clinical Nutrition, Maria Sklodowska-Curie National Research Institute of Oncology, 02781 Warsaw, Poland; (A.S.-S.); (M.J.)
| | - Magdalena Jodkiewicz
- Department of Clinical Nutrition, Maria Sklodowska-Curie National Research Institute of Oncology, 02781 Warsaw, Poland; (A.S.-S.); (M.J.)
| | - Andrzej Kawecki
- Head and Neck Cancer Department, Maria Sklodowska-Curie National Research Institute of Oncology, 02781 Warsaw, Poland;
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Tang WH, Sun W, Long GX. Concurrent cisplatin or cetuximab with radiotherapy in patients with locally advanced head and neck squamous cell carcinoma: A meta-analysis. Medicine (Baltimore) 2020; 99:e21785. [PMID: 32899005 PMCID: PMC7478598 DOI: 10.1097/md.0000000000021785] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Concurrent cisplatin with radiotherapy (CRT) or concurrent cetuximab with radiotherapy (BRT) improves outcomes in locally advanced head and neck squamous cell carcinoma (HNSCC) compared with radiotherapy alone. Nevertheless, a detailed comparison between CRT and BRT in locally advanced HNSCC is required due to inconclusive results. METHODS A comprehensive literature search was conducted on PubMed, Web of Science, Cochrane databases, and EMBASE. Studies that evaluated CRT vs BRT in locally advanced HNSCC were included. The primary outcome that was overall survival (OS), whereas the secondary outcomes were progression-free survival (PFS), locoregional control (LRC), and distant metastasis-free survival (DMFS). Pooled hazard ratios (HRs) and the corresponding 95% confidence intervals (CIs) were used to evaluate prognosis. All the analyses were performed using Stata Statistical Software 12.0. RESULTS Twenty-three studies, with a total of 8701 patients, were considered eligible and included in this meta-analysis. Our results revealed that patients treated with CRT had longer OS (HR = 0.51, 95%CI, 0.41-0.64, P < .001), PFS (HR = 0.37, 95%CI, 0.23-0.60, P < .001), LRC (HR = 0.46, 95%CI, 0.37-0.57, P < .001), and DMFS (HR = 0.56, 95%CI, 0.40-0.77, P < .001) than those treated with BRT. Furthermore, the results of the subgroup analyses were consistent with the primary analysis. CONCLUSIONS CRT has a better OS, PFS, LRC, and DMFS than BRT in locally advanced HNSCC, and should be the preferred treatment for patients with the disease.
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Affiliation(s)
- Wen-Hua Tang
- Department of Oncology, Chengdu Seventh People's Hospital, Chengdu, Sichuan, China
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Wei Sun
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Guo-Xian Long
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
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Maddalo M, Borghetti P, Tomasini D, Corvò R, Bonomo P, Petrucci A, Paiar F, Lastrucci L, Bonù ML, Greco D, Costa L, Pegurri L, Triggiani L, Belgioia L, Desideri I, Grisanti S, Buglione M, Magrini SM. Cetuximab and Radiation Therapy Versus Cisplatin and Radiation Therapy for Locally Advanced Head and Neck Cancer: Long-Term Survival and Toxicity Outcomes of a Randomized Phase 2 Trial. Int J Radiat Oncol Biol Phys 2020; 107:469-477. [PMID: 32184121 DOI: 10.1016/j.ijrobp.2020.02.637] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 02/03/2020] [Accepted: 02/17/2020] [Indexed: 12/30/2022]
Abstract
PURPOSE This study describes the long-term survival and toxicity outcomes of a multicenter randomized phase 2 trial comparing radiation therapy (RT) plus cisplatin (CDDP) or cetuximab (CTX) as first line treatment in locally advanced head and neck cancer (LASCCHN). METHODS AND MATERIALS Between January 2011 and August 2014, 70 patients were enrolled and randomized to receive RT plus weekly CDDP (40 mg/m2) or CTX (250 mg/m2 plus a loading dose of 400 mg/m2). This updated series focuses on late toxicities (graded by using Common Terminology Criteria for Adverse Events version 4.0) and long-term survival outcomes in terms of local control, overall survival, cancer-specific survival, and metastasis-free survival (MFS). A supplementary analysis based on human papilloma virus (HPV) status was also performed. RESULTS No statistically significant difference was found in terms of late effects (xerostomia, fibrosis, mucosal atrophy, weight loss). In the CDDP arm and the CTX arm, 5-year local control rates were 67% and 48%; 5-year MFS rates were 83% and 97%; 5-year overall survival rates were 61% and 52%; and 5-year cancer-specific survival rates were 70% and 59%, respectively. None of these differences reached statistical significance. A subgroup analysis by HPV status and anatomic subsites revealed that in HPV+ oropharyngeal carcinoma, better survival was obtained in the CDDP arm (although statistical tests were not performed owing to the small sample size). Conversely, no statistically significant differences were observed in HPV- oropharyngeal carcinoma and other anatomic subsites, except for the confirmed better MFS rates of the CTX arm. CONCLUSIONS Long-term results are in line with current literature suggesting that RT + CTX is inferior to RT + CDDP for the definitive treatment of LASCCHN. However, if not as an alternative to CDDP, CTX might still play a role in LASCCHN, particularly in HPV- cases.
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Affiliation(s)
- Marta Maddalo
- Radiation Oncology Department, ASST Spedali Civili di Brescia - Brescia University, Brescia, Italy
| | - Paolo Borghetti
- Radiation Oncology Department, ASST Spedali Civili di Brescia - Brescia University, Brescia, Italy
| | - Davide Tomasini
- Radiation Oncology Department, ASST Spedali Civili di Brescia - Brescia University, Brescia, Italy.
| | - Renzo Corvò
- Health Science Department (DISSAL) University of Genova, Genova - Radiation Oncology Department IRCCS San Martino Hospital, Genova, Italy
| | - Pierluigi Bonomo
- Department of Radiation Oncology, Azienda Ospedaliero Universitaria Careggi, University of Florence, Florence, Italy
| | - Alessia Petrucci
- Pistoia Hospital, Azienda Unità Sanitaria Locale No. 3, Pistoia, Italy
| | - Fabiola Paiar
- Department of Radiation Oncology, Azienda Ospedaliera Universitaria Pisana, University of Pisa, Pisa, Italy
| | - Luciana Lastrucci
- S. Donato Hospital, Azienda Unità Sanitaria Locale No. 8, Arezzo, Italy
| | - Marco Lorenzo Bonù
- Radiation Oncology Department, ASST Spedali Civili di Brescia - Brescia University, Brescia, Italy
| | - Diana Greco
- Radiation Oncology Department, ASST Spedali Civili di Brescia - Brescia University, Brescia, Italy
| | - Loredana Costa
- Radiation Oncology Department, ASST Spedali Civili di Brescia - Brescia University, Brescia, Italy
| | - Ludovica Pegurri
- Radiation Oncology Department, ASST Spedali Civili di Brescia - Brescia University, Brescia, Italy
| | - Luca Triggiani
- Radiation Oncology Department, ASST Spedali Civili di Brescia - Brescia University, Brescia, Italy
| | - Liliana Belgioia
- Health Science Department (DISSAL) University of Genova, Genova - Radiation Oncology Department IRCCS San Martino Hospital, Genova, Italy
| | - Isacco Desideri
- Department of Radiation Oncology, Azienda Ospedaliero Universitaria Careggi, University of Florence, Florence, Italy
| | | | - Michela Buglione
- Radiation Oncology Department, ASST Spedali Civili di Brescia - Brescia University, Brescia, Italy
| | - Stefano Maria Magrini
- Radiation Oncology Department, ASST Spedali Civili di Brescia - Brescia University, Brescia, Italy
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Fucoidan Exerts Anticancer Effects Against Head and Neck Squamous Cell Carcinoma In Vitro. Molecules 2018; 23:molecules23123302. [PMID: 30545161 PMCID: PMC6321539 DOI: 10.3390/molecules23123302] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2018] [Revised: 12/08/2018] [Accepted: 12/11/2018] [Indexed: 12/28/2022] Open
Abstract
Fucoidans have been reported to exert anticancer effects with simultaneous low toxicity against healthy tissue. That correlation was observed in several cancer models, however, it has never been investigated in head and neck cancer before. To magnify the efficacy of conventional therapy, the administration of agents like fucoidan could be beneficial. The aim of this study was to evaluate the anticancer effect of Fucus vesiculosus (FV) extract alone and with co-administration of cisplatin in head and neck squamous cell carcinoma (HNSCC) in vitro. MTT assay results revealed an FV-induced inhibition of proliferation in all tested cell lines (H103, FaDu, KB). Flow cytometric cell cycle analysis showed an FV-induced, dose-dependent arrest in either S/G2 phase (H103, FaDu) or G1 arrest (KB). Furthermore, a dose-dependent gain in apoptotic fraction was observed. Western blot analysis confirmed the induction of apoptosis. A significant dose-dependent increase in reactive oxygen species (ROS) production was revealed in the H103 cell line, while FaDu cells remained unresponsive. On the contrary, an HPV-positive cell line, KB, demonstrated a dose-dependent decrease in ROS synthesis. Moreover, fucoidan enhanced the response to cisplatin (synergistic effect) in all cell lines with the HPV-positive one (KB) being the most sensitive. These results have been confirmed by flow-cytometric apoptosis analysis. In conclusion, we confirmed that fucoidan exhibits anticancer properties against HNSCC, which are manifested by the induction of apoptosis, regulation of ROS production, cell cycle arrest, and inhibition of proliferation.
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Bhattacharya P, Shetake NG, Pandey BN, Kumar A. Receptor tyrosine kinase signaling in cancer radiotherapy and its targeting for tumor radiosensitization. Int J Radiat Biol 2018; 94:628-644. [DOI: 10.1080/09553002.2018.1478160] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Poushali Bhattacharya
- Radiation Signaling and Cancer Biology Section, Radiation Biology and Health Sciences Division, Bhabha Atomic Research Centre, Mumbai, India
| | - Neena G. Shetake
- Radiation Signaling and Cancer Biology Section, Radiation Biology and Health Sciences Division, Bhabha Atomic Research Centre, Mumbai, India
| | - Badri N. Pandey
- Radiation Signaling and Cancer Biology Section, Radiation Biology and Health Sciences Division, Bhabha Atomic Research Centre, Mumbai, India
| | - Amit Kumar
- Radiation Signaling and Cancer Biology Section, Radiation Biology and Health Sciences Division, Bhabha Atomic Research Centre, Mumbai, India
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