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All-Trans Retinoic Acid Potentiates Antitumor Efficacy of Cisplatin by Increasing Differentiation of Cancer Stem-Like Cells in Cervical Cancer.

Authors:
Wen-Jie Fan Hao Ding Xiang-Xun Chen Lin Yang

Ann Clin Lab Sci 2021 Jan;51(1):22-29

Department of Radiology, The First Affiliated Hospital of Anhui Medical University, Hefei, China.

Objective: All-trans retinoic acid (ATRA), a derivative of vitamin A, has been reported to exert its synergistic antitumor effect with chemotherapy in various cancer types; however, its effect in cervical cancer remains unclear. The objective of this study was to investigate the antitumor effect of ATRA with or without cisplatin and elucidate its potential mechanisms in cervical cancer cells.

Methods: Cell viability was determined by CCK-8 assay. Cell cycle and cell apoptosis were analyzed by flow cytometry. Caspase-3, cleaved caspase-3 and cell cycle-related proteins were detected by western blotting. Scratch wound-healing assay was performed to evaluate cell migration ability. The expression of CD44, a biomarker of cervical cancer stem-like cells, was determined by flow cytometry and western blotting. In addition, the activity of the Wnt signaling pathway was monitored by luciferase reporter assay and western blotting.

Results: Compared with cisplatin treatment alone, combined use of ATRA and cisplatin significantly inhibited cell proliferation (<0.01) and migration (<0.01), and induced G0/G1 phase arrest (<0.01) and apoptosis (<0.05) in cervical cancer Hela cells. Furthermore, ATRA treatment also effectively induced differentiation of cancer stem-like cells as represented by reduced expression of CD44 and inhibited Wnt signaling pathway activity.

Conclusions: ATRA significantly enhanced the antitumor effect of cisplatin in cervical cancer cells, the mechanism of which might be attributed to its effect of inducing the differentiation of cancer stem-like cells.

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January 2021

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Recommendations of the European Advisory Committee of Cytotechnology and European Federation of Cytology Societies for Training and Education of Cytotechnologists in Europe.

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Veronika Anic Maj Liv Eide Beatrix Cochand-Priollet Danijela Vrdoljak Mozetic Giovanni Negri Philippe Vielh

Acta Cytol 2021 Apr 15:1-6. Epub 2021 Apr 15.

Medipath and American Hospital of Paris, Paris, France.

Background: Faced with changes in cytodiagnostics, cervical cancer screening programs, the introduction and application of new methods, the cytotechnological educational program requires the necessary changes and additions. Insufficient, uneven as well as inaccessible education of cytotechnologists in European countries was the basis for making these recommendations.

Summary: The results of previous research and publications related to the currently available education of cytotechnologists in Europe, the needs and suggestions were given by the European Advisory Committee of Cytotechnology (EACC) and European Federation of Cytology Societies (EFCS) for optimal education of future generations of cytotechnologists were used in the preparation of these recommendations. Read More

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Curr Opin Immunol 2021 Apr 12;71:21-26. Epub 2021 Apr 12.

South African Medical Research Council, South Africa.

In Sub-Saharan (SSA) cervical cancer is the leading cause of cancer deaths amongst women. The region carries the greatest burden, with 24.55% of the global mortality from cervical cancer. Read More

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Am J Otolaryngol 2021 Apr 5;42(5):103015. Epub 2021 Apr 5.

Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA. Electronic address:

Purpose: To examine the potential benefit of reevaluation of original slides and p16 immunohistochemistry (IHC) of tonsillectomy specimens for primary tumor identification in cases of human papillomavirus (HPV) positive squamous cell carcinoma (SCC) of the head and neck of unknown primary.

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J Infect Public Health 2021 Feb 8;14(5):661-667. Epub 2021 Feb 8.

Department of Community Medicine and Behavioural Sciences, Faculty of Medicine, Kuwait University, Box: 24923, 13110 Safat, Kuwait. Electronic address:

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Photodiagnosis Photodyn Ther 2021 Apr 12:102293. Epub 2021 Apr 12.

Department of Obstetrics and Gynecology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Shanghai Key Laboratory of Gynecologic Oncology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China. Electronic address:

Background: High-risk HPV (hrHPV) not only increases the risk of cervical precancerous lesions and cervical cancer, but also adds psychological burden to HPV-positive women. 5-aminolevulinic acid photodynamic therapy (ALA-PDT) is a non-invasive and highly tissue-selective therapy. We aim to investigate the clinical efficacy of ALA-PDT for elimination of cervical hrHPV infection in HPV-positive women without cervical lesions. Read More

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