PMID- 29181170 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20201001 IS - 2049-9450 (Print) IS - 2049-9469 (Electronic) IS - 2049-9450 (Linking) VI - 7 IP - 5 DP - 2017 Nov TI - Role of Kruppel-like factor 4 and heat shock protein 27 in cancer of the larynx. PG - 808-814 LID - 10.3892/mco.2017.1412 [doi] AB - Late detection and lack of standard treatment strategies in larynx cancer patients result in high levels of mortality and poor prognosis. Prognostic stratification of larynx cancer patients based on molecular prognostic tumor biomarkers may lead to more efficient clinical management. Kruppel-like factor 4 (KLF4) and Heat Shock Protein 27 (HSP27) have an important role in tumorigenesis and are considered promising candidate biomarkers for various types of cancer. However, their role in larynx carcinoma remains to be elucidated. The present study aimed to determine KLF4 and HSP27 expression profiles in laryngeal tumors. The protein and mRNA expression levels of KLF4 and HSP27 were evaluated by immunohistochemical and reverse transcription-polymerase chain reaction analyses in 44 larynx carcinoma samples and 21 normal tissue samples, and then correlated with clinical characteristics. A differential expression of KLF4 and HSP27 was observed between normal and tumor tissues. The protein and mRNA expression levels of KLF4 were significantly decreased in larynx squamous cell carcinoma (LSCC) compared with normal tissue, whereas HSP27 was significantly overexpressed in tumor tissues compared with normal tissues, at the protein and mRNA levels. KLF4 expression decreased gradually with tumor progression whereas HSP27 expression increased. A significant difference was observed between stages I and IV. KLF4 and HSP27 exhibit opposite functions and roles in the carcinogenic process of LSCC. Their role in laryngeal cancer initiation and progression emphasizes their use as potential future targets for prognosis and treatment. KLF4 and HSP27 expression levels may act as potential biomarkers in patients with cancer of the larynx. FAU - Karam, Jihad AU - Karam J AD - Anti-Tumor Therapeutic Targeting Laboratory, Faculty of Sciences, Lebanese University, Hadat 1003, Lebanon. FAU - Fadous-Khalife, Marie Claude AU - Fadous-Khalife MC AD - Anti-Tumor Therapeutic Targeting Laboratory, Faculty of Sciences, Lebanese University, Hadat 1003, Lebanon. AD - Notre Dame de Secours University Hospital, Jbeil 1401, Lebanon. FAU - Tannous, Rita AU - Tannous R AD - Anti-Tumor Therapeutic Targeting Laboratory, Faculty of Sciences, Lebanese University, Hadat 1003, Lebanon. FAU - Fakhreddine, Sally AU - Fakhreddine S AD - Anti-Tumor Therapeutic Targeting Laboratory, Faculty of Sciences, Lebanese University, Hadat 1003, Lebanon. FAU - Massoud, Marcel AU - Massoud M AD - Notre Dame de Secours University Hospital, Jbeil 1401, Lebanon. FAU - Hadchity, Joseph AU - Hadchity J AD - Anti-Tumor Therapeutic Targeting Laboratory, Faculty of Sciences, Lebanese University, Hadat 1003, Lebanon. AD - Department of Surgery, St. Therese Hospital, Hadat 1003, Lebanon. FAU - Aftimos, Georges AU - Aftimos G AD - National Institute of Pathology, Baabda 1003, Lebanon. FAU - Hadchity, Elie AU - Hadchity E AD - Anti-Tumor Therapeutic Targeting Laboratory, Faculty of Sciences, Lebanese University, Hadat 1003, Lebanon. LA - eng PT - Journal Article DEP - 20170919 PL - England TA - Mol Clin Oncol JT - Molecular and clinical oncology JID - 101613422 PMC - PMC5700286 OTO - NOTNLM OT - HSP27 OT - KLF4 OT - RT-PCR OT - immunohistochemistry OT - larynx cancer OT - prognostic markers EDAT- 2017/11/29 06:00 MHDA- 2017/11/29 06:01 PMCR- 2017/09/19 CRDT- 2017/11/29 06:00 PHST- 2017/02/22 00:00 [received] PHST- 2017/06/07 00:00 [accepted] PHST- 2017/11/29 06:00 [entrez] PHST- 2017/11/29 06:00 [pubmed] PHST- 2017/11/29 06:01 [medline] PHST- 2017/09/19 00:00 [pmc-release] AID - MCO-0-0-1412 [pii] AID - 10.3892/mco.2017.1412 [doi] PST - ppublish SO - Mol Clin Oncol. 2017 Nov;7(5):808-814. doi: 10.3892/mco.2017.1412. Epub 2017 Sep 19.