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Erschienen in: Annals of Surgical Oncology 3/2012

01.07.2012 | Translational Research and Biomarkers

Axl Is a Prognostic Marker in Oral Squamous Cell Carcinoma

verfasst von: Chien-Hsing Lee, MD, PHD, Ching-Yu Yen, DDS, Shyun-Yeu Liu, DDS, Chi-Kang Chen, MD, Chi-Fu Chiang, MD, Shine-Gwo Shiah, PHD, Pei-Hsuan Chen, DDS, Yi-Shing Shieh, DDS, PHD

Erschienen in: Annals of Surgical Oncology | Sonderheft 3/2012

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Abstract

Background

Overexpression of the receptor tyrosine kinase Axl is implicated in several diseases. The present study was conducted to determine the biologic and clinical significance of Axl in oral squamous cell carcinoma (OSCC).

Methods

The expression of Axl was examined in a panel of OSCC cell lines. Activation of Axl by Gas6 treatment and silencing of Axl via Axl shRNA were used to examine the effect of Axl on OSCC cell line. Expression of Axl in cancer tissues were examined by immunohistochemical staining. The associations between Axl expression and clinicopathologic features and prognosis were analyzed.

Results

Varied Axl expression was noted in OSCC cell lines. Compared with control cells, modulated Axl signal affected epithelial-mesenchymal gene expression and cell invasion and migration. The immunoreactivity of Axl was low in normal epithelium, and a progressively increased positive percentage was noted, from normal/hyperplastic epithelium (10.9%) to dysplasia (30.8%) to cancer tissue (54.5%). Axl expression correlated with lymph node status (P = .001) and clinical stage (P = .014) of OSCC. Patients with high expression of Axl showed poor prognosis compared with those with low Axl expression patients (P < .001). In multivariate prognostic analysis according to the Cox proportional hazard regression model, Axl expression remained as an independent prognostic factor (P = .037; CI, 1.042–3.839).

Conclusions

Our data indicated that Axl signal promotes OSCC carcinogenesis and progression. The expression of Axl is a valuable marker for OSCC aggressiveness and clinical outcome.
Literatur
1.
Zurück zum Zitat Hunter KD, Parkinson EK, Harrison PR. Profiling early head and neck cancer. Nat Rev Cancer. 2005;5:127–35.PubMedCrossRef Hunter KD, Parkinson EK, Harrison PR. Profiling early head and neck cancer. Nat Rev Cancer. 2005;5:127–35.PubMedCrossRef
2.
Zurück zum Zitat Jemal A, Siegel R, Ward E, Murray T, Xu J, Thun MJ. Cancer statistics, 2007. CA Cancer J Clin. 2007;57:43–66.PubMedCrossRef Jemal A, Siegel R, Ward E, Murray T, Xu J, Thun MJ. Cancer statistics, 2007. CA Cancer J Clin. 2007;57:43–66.PubMedCrossRef
3.
Zurück zum Zitat Forastiere A, Koch W, Trotti A, Sidransky D. Head and neck cancer. N Engl J Med. 2001;345:1890–900.PubMedCrossRef Forastiere A, Koch W, Trotti A, Sidransky D. Head and neck cancer. N Engl J Med. 2001;345:1890–900.PubMedCrossRef
4.
Zurück zum Zitat Beenken SW, Krontiras H, Maddox WA, Peters GE, Soong S, Urist MM. T1 and T2 squamous cell carcinoma of the oral tongue: prognostic factors and the role of elective lymph node dissection. Head Neck. 1999;21:124–30.PubMedCrossRef Beenken SW, Krontiras H, Maddox WA, Peters GE, Soong S, Urist MM. T1 and T2 squamous cell carcinoma of the oral tongue: prognostic factors and the role of elective lymph node dissection. Head Neck. 1999;21:124–30.PubMedCrossRef
5.
Zurück zum Zitat Sciubba JJ. Improving detection of precancerous and cancerous oral lesions. Computer-assisted analysis of the oral brush biopsy. U.S. Collaborative OralCDx Study Group. J Am Dent Assoc. 1999;130:1445–57.PubMed Sciubba JJ. Improving detection of precancerous and cancerous oral lesions. Computer-assisted analysis of the oral brush biopsy. U.S. Collaborative OralCDx Study Group. J Am Dent Assoc. 1999;130:1445–57.PubMed
6.
Zurück zum Zitat Janssen JW, Schulz AS, Steenvoorden AC, Schmidberger M, Strehl S, Ambros PF, et al. A novel putative tyrosine kinase receptor with oncogenic potential. Oncogene. 1991;6:2113–20.PubMed Janssen JW, Schulz AS, Steenvoorden AC, Schmidberger M, Strehl S, Ambros PF, et al. A novel putative tyrosine kinase receptor with oncogenic potential. Oncogene. 1991;6:2113–20.PubMed
7.
Zurück zum Zitat O’Bryan JP, Frye RA, Cogswell PC, Cogswell PC, Neubauer A, Kitch B, et al. Axl, a transforming gene isolated from primary human myeloid leukemia cells, encodes a novel receptor tyrosine kinase. Mol Cell Biol. 1991;11:5016–31.PubMed O’Bryan JP, Frye RA, Cogswell PC, Cogswell PC, Neubauer A, Kitch B, et al. Axl, a transforming gene isolated from primary human myeloid leukemia cells, encodes a novel receptor tyrosine kinase. Mol Cell Biol. 1991;11:5016–31.PubMed
8.
Zurück zum Zitat Manfioletti G, Brancolini C, Avanzi G, Schneider C. The protein encoded by a growth arrest-specific gene (gas6) is a new member of the vitamin K-dependent proteins related to protein S, a negative coregulator in the blood coagulation cascade. Mol Cell Biol. 1993;13:4976–85.PubMed Manfioletti G, Brancolini C, Avanzi G, Schneider C. The protein encoded by a growth arrest-specific gene (gas6) is a new member of the vitamin K-dependent proteins related to protein S, a negative coregulator in the blood coagulation cascade. Mol Cell Biol. 1993;13:4976–85.PubMed
9.
Zurück zum Zitat Schneider C, King RM, Philipson L. Genes specifically expressed at growth arrest of mammalian cells. Cell. 1988;54:787–93.PubMedCrossRef Schneider C, King RM, Philipson L. Genes specifically expressed at growth arrest of mammalian cells. Cell. 1988;54:787–93.PubMedCrossRef
10.
Zurück zum Zitat Sainaghi PP, Castello L, Bergamasco L, Galletti M, Bellosta P, Avanzi GC. Gas6 induces proliferation in prostate carcinoma cell lines expressing the Axl receptor. J Cell Physiol. 2005;204:36–44.PubMedCrossRef Sainaghi PP, Castello L, Bergamasco L, Galletti M, Bellosta P, Avanzi GC. Gas6 induces proliferation in prostate carcinoma cell lines expressing the Axl receptor. J Cell Physiol. 2005;204:36–44.PubMedCrossRef
11.
Zurück zum Zitat Sawabu T, Seno H, Kawashima T, Fukuda A, Uenoyama Y, Kawada M, et al. Growth arrest-specific gene 6 and Axl signaling enhances gastric cancer cell survival via Akt pathway. Mol Carcinog. 2007;46:155–64.PubMedCrossRef Sawabu T, Seno H, Kawashima T, Fukuda A, Uenoyama Y, Kawada M, et al. Growth arrest-specific gene 6 and Axl signaling enhances gastric cancer cell survival via Akt pathway. Mol Carcinog. 2007;46:155–64.PubMedCrossRef
12.
Zurück zum Zitat Hong CC, Lay JD, Huang JS, Cheng AL, Tang JL, Lin MT, et al. Receptor tyrosine kinase AXL is induced by chemotherapy drugs and overexpression of AXL confers drug resistance in acute myeloid leukemia. Cancer Lett. 2008;268:314–24.PubMedCrossRef Hong CC, Lay JD, Huang JS, Cheng AL, Tang JL, Lin MT, et al. Receptor tyrosine kinase AXL is induced by chemotherapy drugs and overexpression of AXL confers drug resistance in acute myeloid leukemia. Cancer Lett. 2008;268:314–24.PubMedCrossRef
13.
Zurück zum Zitat Lee WP, Wen Y, Varnum B, Hung MC. Akt is required for Axl-Gas6 signaling to protect cells from E1A-mediated apoptosis. Oncogene. 2002;21:329–36.PubMedCrossRef Lee WP, Wen Y, Varnum B, Hung MC. Akt is required for Axl-Gas6 signaling to protect cells from E1A-mediated apoptosis. Oncogene. 2002;21:329–36.PubMedCrossRef
14.
Zurück zum Zitat Keating AK, Kim GK, Jones AE, Donson AM, Ware K, Mulcahy JM, et al. Inhibition of Mer and Axl receptor tyrosine kinases in astrocytoma cells leads to increased apoptosis and improved chemosensitivity. Mol Cancer Ther. 2010;9:1298–307.PubMedCrossRef Keating AK, Kim GK, Jones AE, Donson AM, Ware K, Mulcahy JM, et al. Inhibition of Mer and Axl receptor tyrosine kinases in astrocytoma cells leads to increased apoptosis and improved chemosensitivity. Mol Cancer Ther. 2010;9:1298–307.PubMedCrossRef
15.
Zurück zum Zitat Goruppi S, Ruaro E, Varnum B, Schneider C. Requirement of phosphatidylinositol 3-kinase-dependent pathway and Src for Gas6-Axl mitogenic and survival activities in NIH 3T3 fibroblasts. Mol Cell Biol. 1997;17:4442–53.PubMed Goruppi S, Ruaro E, Varnum B, Schneider C. Requirement of phosphatidylinositol 3-kinase-dependent pathway and Src for Gas6-Axl mitogenic and survival activities in NIH 3T3 fibroblasts. Mol Cell Biol. 1997;17:4442–53.PubMed
16.
Zurück zum Zitat Demarchi F, Verardo R, Varnum B, Brancolini C, Schneider C. Gas6 anti-apoptotic signaling requires NF-kappa B activation. J Biol Chem. 2001;276:31738–44.PubMedCrossRef Demarchi F, Verardo R, Varnum B, Brancolini C, Schneider C. Gas6 anti-apoptotic signaling requires NF-kappa B activation. J Biol Chem. 2001;276:31738–44.PubMedCrossRef
17.
Zurück zum Zitat Allen MP, Zeng C, Schneider K, Xiong X, Meintzer MK, Bellosta P, et al. Growth arrest-specific gene 6 (Gas6)/adhesion related kinase (Ark) signaling promotes gonadotropin-releasing hormone neuronal survival via extracellular signal-regulated kinase (ERK) and Akt. Mol Endocrinol. 1999;13:191–201.PubMedCrossRef Allen MP, Zeng C, Schneider K, Xiong X, Meintzer MK, Bellosta P, et al. Growth arrest-specific gene 6 (Gas6)/adhesion related kinase (Ark) signaling promotes gonadotropin-releasing hormone neuronal survival via extracellular signal-regulated kinase (ERK) and Akt. Mol Endocrinol. 1999;13:191–201.PubMedCrossRef
18.
Zurück zum Zitat Shankar SL, O’Guin K, Cammer M, McMorris FA, Stitt TN, Basch RS,et al. The growth arrest-specific gene product Gas6 promotes the survival of human oligodendrocytes via a phosphatidylinositol 3-kinase-dependent pathway. J Neurosci. 2003;23:4208–18.PubMed Shankar SL, O’Guin K, Cammer M, McMorris FA, Stitt TN, Basch RS,et al. The growth arrest-specific gene product Gas6 promotes the survival of human oligodendrocytes via a phosphatidylinositol 3-kinase-dependent pathway. J Neurosci. 2003;23:4208–18.PubMed
19.
Zurück zum Zitat Berclaz G, Altermatt HJ, Rohrbach V, Kieffer I, Dreher E, Andres AC. Estrogen dependent expression of the receptor tyrosine kinase axl in normal and malignant human breast. Ann Oncol. 2001;12:819–24.PubMedCrossRef Berclaz G, Altermatt HJ, Rohrbach V, Kieffer I, Dreher E, Andres AC. Estrogen dependent expression of the receptor tyrosine kinase axl in normal and malignant human breast. Ann Oncol. 2001;12:819–24.PubMedCrossRef
20.
Zurück zum Zitat Craven RJ, Xu LH, Weiner TM, Fridell YW, Dent GA, Srivastava S, et al. Receptor tyrosine kinases expressed in metastatic colon cancer. Int J Cancer. 1995;60:791–7.PubMedCrossRef Craven RJ, Xu LH, Weiner TM, Fridell YW, Dent GA, Srivastava S, et al. Receptor tyrosine kinases expressed in metastatic colon cancer. Int J Cancer. 1995;60:791–7.PubMedCrossRef
21.
Zurück zum Zitat Shieh YS, Lai CY, Kao YR, Shiah SG, Chu YW, Lee HS, et al. Expression of axl in lung adenocarcinoma and correlation with tumor progression. Neoplasia. 2005;7:1058–64.PubMedCrossRef Shieh YS, Lai CY, Kao YR, Shiah SG, Chu YW, Lee HS, et al. Expression of axl in lung adenocarcinoma and correlation with tumor progression. Neoplasia. 2005;7:1058–64.PubMedCrossRef
22.
Zurück zum Zitat Sun W, Fujimoto J, Tamaya T. Coexpression of Gas6/Axl in human ovarian cancers. Oncology. 2004;66:450–7.PubMedCrossRef Sun W, Fujimoto J, Tamaya T. Coexpression of Gas6/Axl in human ovarian cancers. Oncology. 2004;66:450–7.PubMedCrossRef
23.
Zurück zum Zitat Liu SY, Chang LC, Pan LF, Hung YJ, Lee CH, Shieh YS. Clinicopathologic significance of tumor cell-lined vessel and microenvironment in oral squamous cell carcinoma. Oral Oncol. 2008;44:277–85.PubMedCrossRef Liu SY, Chang LC, Pan LF, Hung YJ, Lee CH, Shieh YS. Clinicopathologic significance of tumor cell-lined vessel and microenvironment in oral squamous cell carcinoma. Oral Oncol. 2008;44:277–85.PubMedCrossRef
24.
Zurück zum Zitat Gjerdrum C, Tiron C, Hoiby T, Stefansson I, Haugen H, Sandal T, et al. Axl is an essential epithelial-to-mesenchymal transition-induced regulator of breast cancer metastasis and patient survival. Proc Natl Acad Sci USA. 2010;107:1124–9.PubMedCrossRef Gjerdrum C, Tiron C, Hoiby T, Stefansson I, Haugen H, Sandal T, et al. Axl is an essential epithelial-to-mesenchymal transition-induced regulator of breast cancer metastasis and patient survival. Proc Natl Acad Sci USA. 2010;107:1124–9.PubMedCrossRef
25.
Zurück zum Zitat Linger RM, Keating AK, Earp HS, Graham DK. TAM receptor tyrosine kinases: biologic functions, signaling, and potential therapeutic targeting in human cancer. Adv Cancer Res. 2008;100:35–83.PubMedCrossRef Linger RM, Keating AK, Earp HS, Graham DK. TAM receptor tyrosine kinases: biologic functions, signaling, and potential therapeutic targeting in human cancer. Adv Cancer Res. 2008;100:35–83.PubMedCrossRef
26.
Zurück zum Zitat Hafizi S, Dahlback B. Signalling and functional diversity within the Axl subfamily of receptor tyrosine kinases. Cytokine Growth Factor Rev. 2006;17:295–304.PubMedCrossRef Hafizi S, Dahlback B. Signalling and functional diversity within the Axl subfamily of receptor tyrosine kinases. Cytokine Growth Factor Rev. 2006;17:295–304.PubMedCrossRef
27.
Zurück zum Zitat Nagata K, Ohashi K, Nakano T, Arita H, Zong C, Hanafusa H, et al. Identification of the product of growth arrest-specific gene 6 as a common ligand for Axl, Sky, and Mer receptor tyrosine kinases. J Biol Chem. 1996;271:30022–7.PubMedCrossRef Nagata K, Ohashi K, Nakano T, Arita H, Zong C, Hanafusa H, et al. Identification of the product of growth arrest-specific gene 6 as a common ligand for Axl, Sky, and Mer receptor tyrosine kinases. J Biol Chem. 1996;271:30022–7.PubMedCrossRef
28.
Zurück zum Zitat Hutterer M, Knyazev P, Abate A, Reschke M, Maier H, Stefanova N, et al. Axl and growth arrest-specific gene 6 are frequently overexpressed in human gliomas and predict poor prognosis in patients with glioblastoma multiforme. Clin Cancer Res. 2008;14:130–8.PubMedCrossRef Hutterer M, Knyazev P, Abate A, Reschke M, Maier H, Stefanova N, et al. Axl and growth arrest-specific gene 6 are frequently overexpressed in human gliomas and predict poor prognosis in patients with glioblastoma multiforme. Clin Cancer Res. 2008;14:130–8.PubMedCrossRef
29.
Zurück zum Zitat Holland SJ, Powell MJ, Franci C, Chan EW, Friera AM, Atchison RE, et al. Multiple roles for the receptor tyrosine kinase axl in tumor formation. Cancer Res. 2005;65:9294–303.PubMedCrossRef Holland SJ, Powell MJ, Franci C, Chan EW, Friera AM, Atchison RE, et al. Multiple roles for the receptor tyrosine kinase axl in tumor formation. Cancer Res. 2005;65:9294–303.PubMedCrossRef
30.
Zurück zum Zitat Koorstra JB, Karikari CA, Feldmann G, Bisht S, Rojas PL, Offerhaus GJ, et al. The Axl receptor tyrosine kinase confers an adverse prognostic influence in pancreatic cancer and represents a new therapeutic target. Cancer Biol Ther. 2009;8:618–26.PubMedCrossRef Koorstra JB, Karikari CA, Feldmann G, Bisht S, Rojas PL, Offerhaus GJ, et al. The Axl receptor tyrosine kinase confers an adverse prognostic influence in pancreatic cancer and represents a new therapeutic target. Cancer Biol Ther. 2009;8:618–26.PubMedCrossRef
31.
Zurück zum Zitat Jacob AN, Kalapurakal J, Davidson WR, Kandpal G, Dunson N, Prashar Y, et al. A receptor tyrosine kinase, UFO/Axl, and other genes isolated by a modified differential display PCR are overexpressed in metastatic prostatic carcinoma cell line DU145. Cancer Detect Prev. 1999;23:325–32.PubMedCrossRef Jacob AN, Kalapurakal J, Davidson WR, Kandpal G, Dunson N, Prashar Y, et al. A receptor tyrosine kinase, UFO/Axl, and other genes isolated by a modified differential display PCR are overexpressed in metastatic prostatic carcinoma cell line DU145. Cancer Detect Prev. 1999;23:325–32.PubMedCrossRef
32.
Zurück zum Zitat Vajkoczy P, Knyazev P, Kunkel A, Capelle HH, Behrndt S, von Tengg-Kobligk H, et al. Dominant-negative inhibition of the Axl receptor tyrosine kinase suppresses brain tumor cell growth and invasion and prolongs survival. Proc Natl Acad Sci USA. 2006;103:5799–804.PubMedCrossRef Vajkoczy P, Knyazev P, Kunkel A, Capelle HH, Behrndt S, von Tengg-Kobligk H, et al. Dominant-negative inhibition of the Axl receptor tyrosine kinase suppresses brain tumor cell growth and invasion and prolongs survival. Proc Natl Acad Sci USA. 2006;103:5799–804.PubMedCrossRef
33.
Zurück zum Zitat Bittner M, Meltzer P, Chen Y, Jiang Y, Seftor E, Hendrix M, et al. Molecular classification of cutaneous malignant melanoma by gene expression profiling. Nature. 2000;406:536–40.PubMedCrossRef Bittner M, Meltzer P, Chen Y, Jiang Y, Seftor E, Hendrix M, et al. Molecular classification of cutaneous malignant melanoma by gene expression profiling. Nature. 2000;406:536–40.PubMedCrossRef
34.
Zurück zum Zitat Nakano T, Tani M, Ishibashi Y, Kimura K, Park YB, Imaizumi N, et al. Biological properties and gene expression associated with metastatic potential of human osteosarcoma. Clin Exp Metastasis. 2003;20:665–74.PubMedCrossRef Nakano T, Tani M, Ishibashi Y, Kimura K, Park YB, Imaizumi N, et al. Biological properties and gene expression associated with metastatic potential of human osteosarcoma. Clin Exp Metastasis. 2003;20:665–74.PubMedCrossRef
35.
Zurück zum Zitat Gustafsson A, Martuszewska D, Johansson M, Ekman C, Hafizi S, Ljungberg B, et al. Differential expression of Axl and Gas6 in renal cell carcinoma reflecting tumor advancement and survival. Clin Cancer Res. 2009;15:4742–9.PubMedCrossRef Gustafsson A, Martuszewska D, Johansson M, Ekman C, Hafizi S, Ljungberg B, et al. Differential expression of Axl and Gas6 in renal cell carcinoma reflecting tumor advancement and survival. Clin Cancer Res. 2009;15:4742–9.PubMedCrossRef
Metadaten
Titel
Axl Is a Prognostic Marker in Oral Squamous Cell Carcinoma
verfasst von
Chien-Hsing Lee, MD, PHD
Ching-Yu Yen, DDS
Shyun-Yeu Liu, DDS
Chi-Kang Chen, MD
Chi-Fu Chiang, MD
Shine-Gwo Shiah, PHD
Pei-Hsuan Chen, DDS
Yi-Shing Shieh, DDS, PHD
Publikationsdatum
01.07.2012
Verlag
Springer-Verlag
Erschienen in
Annals of Surgical Oncology / Ausgabe Sonderheft 3/2012
Print ISSN: 1068-9265
Elektronische ISSN: 1534-4681
DOI
https://doi.org/10.1245/s10434-011-1985-8

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