Original Article
 
Co-expression of epithelial mesenchymal transition markers NEDD9 and Twist1 in carcinoma of the uterine cervix and their clinical significances
Ola A. Megahed1, Ola A. Harb1, Rham Z. Ahmed2, Safa A. Balata3, Amr AbdAlmohsen Alnemr4
1Department of Pathology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
2Department of medical oncology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
3Department of clinical oncology and nuclear medicine, Faculty of Medicine, Zagazig University, Zagazig, Egypt
4Department of Gynecology and obstetrics, Faculty of Medicine, Zagazig University, Zagazig, Egypt

Article ID: 100006P03OM2017
doi:10.5348/P03-2017-6-OA-1

Address correspondence to:
Ola A. Harb MD
PhD, Department of Pathology
Faculty of, 44519 Zagazig University
Zagazig, Egypt

Access full text article on other devices

  Access PDF of article on other devices

[HTML Abstract]   [PDF Full Text] [Print This Article]
[Similar article in Pumed] [Similar article in Google Scholar]

How to cite this article
Megahed OA, Harb OA, Ahmed RZ, Balata SA, Alnemr AA. Co-expression of epithelial mesenchymal transition markers NEDD9 and Twist1 in carcinoma of the uterine cervix and their clinical significances. Edorium J Pathol 2017;4:1–13.


Abstract

Aims: Aims of our study were to detect NEDD9 and Twist1 co-expressions in carcinoma of the uterine cervix, to correlate such expressions with clinicopathological criteria of the patients and to explore their significances in response to cancer therapy, progression, recurrence and patients’ survival.
Methods: This is a prospective cohort study where we assessed NEDD9 and Twist1 co-expressions by immunohistochemical-technique in fifty paraffin blocks of carcinoma of the uterine cervix, we have followed our patients for three years then we detect relations between markers expressions, pathological criteria, and cancer response to therapy, progression, recurrence and patients’ survival rates.
Results: We detected high expression of NEDD9 in 29 out of 50 (58%) cases and high expression of Twist1 in 23 out of 50 (46%) cases of carcinoma of the uterine cervix. High-expression of both NEDD9 and Twist1 was positively correlated with carcinoma higher grade, advanced FIGO stage, presence of lupus nephritis & distant metastases, higher incidence of carcinoma progression, poor response to therapy, higher rate of recurrence, poor progression free and three year overall survival rates (p < 0.001).
Conclusion: NEDD9 and Twist1 are markers of poor prognosis and can be used as therapeutic targets in carcinoma of the uterine cervix patients.

Keywords: Carcinoma of the uterine cervix, Immunohistochemistry, NEDD9 and Twist1, Prognosis


Introduction

Carcinoma of the uterine cervix is the fourth most common cancer in females all over the world [1]. The current therapeutic modalities as radical hysterectomy and chemo-radiotherapy had promising results but this type of cancer have shown to metastasized early to lymph nodes which is believed to be a poor prognostic factor. Hence, the need for profound exploration of the underlying mechanisms of invasion and spread of such cancer type which will aid in the revelation of effective novel therapies. The epithelial-mesenchymal-transition (EMT) is the route by which malignant cells lose their epithelial features and transform to cells with mesenchymal criteria that are able to invade the extracellular environment and metastasize [2]. The EMT plays a fundamental role in cancer progression, invasion and spread [3]. So, studying EMT detailed molecular pathogenesis that could allow its inhibition became a recent point of research for metastases and invasion prevention. NEDD9 was first detected in precursor of neuronal cells in year 1992, which resulted in down-regulation in mice central nervous system development [4]. Formerly, aberrant expression of NEDD9 protein has contributed to invasion and metastasis in plethora of cancers [5] [6]. NEDD9 was found to have many important roles in cells adhesion, motility, invasion, and EMT induced cancer spread [7][8]. Twist1, is a basic helix-loop-helix proteins family member, it is a DNA- basic-binding domain which targets E-box sequences and a helix-loop-helix domains consensus [9]. Twist1 is very important for neural crest migration and mesoderm formation [10]; stimulation of EMT process in cancer invasion and spread [11]; and regulation of many cancer-related functions like angiogenesis and extracellular matrix degradation [12]. Twist plays a crucial role in promoting EMT. Recent findings have demonstrated that Twist overexpression plays a key role in solid cancers [13].While NEDD9 and Twist were found to have a role in metastasis in various cancers, but few studies up-to-date determined their detailed role in carcinoma of the uterine cervix and while no previous research had demonstrated the correlation of both together such type of cancer.

Aim of our research was to detect NEDD9 and Twist1 co-expressions in carcinoma of the uterine cervix, to correlate such expressions with clinicopathological criteria of the patients and to explore their significances in response to cancer therapy, progression, recurrence and patients’ survival.


MATERIALS AND METHODS

This is a prospective cohort-study that was done at pathology, medical oncology and clinical oncology and nuclear medicine and gynecology departments, Zagazig University, faculty of medicine, the study design was accepting by the IRB ethical committee in faculty of medicine, Zagazig university hospitals in the period from January 2014 to January 2017.

We included 50 cases of carcinoma of the uterine cervix, in this study. Patient’s demographic data as patient’s age, tumor size, grade, stage and follow-up data from the archives of the shared departments, used the staging system of international-federation-of-gynecology-and-obstetrics’ (FIGO) for staging of carcinoma of the uterine cervix [14]. All patients were managed according to their stage by surgery in oncology unit in department of gynecology and obstetrics, chemotherapy (platinum based chemotherapy), and radiotherapy or combined modalities.

Expressions of NEDD9 and Twist1 were evaluated in sections from all fifty paraffin blocks of carcinoma of the uterine cervix.


Immunohistochemical technique of staining

We used Streptavidin-biotin method [15], incubated slides overnight with mouse mono-clonal anti-NEDD9 (NEDD9 clone ab18056, dilution 1: 100Abcam, UK, Cambridge) and rabbit poly-clonal anti-Twist (1:50, ab50581; Abcam, UK, Cambridge).

NEDD9 positive control was pancreatic carcinoma tissue [16] and Twist1 positive control was thyroid cancer tissue [17], while negative controls was done by omission of the primary antibodies replacing them with usual saline. The slides were assessed, evaluated and scored by two pathologists.


Evaluation of NEDD9 immunohistochemical expression

Only cytoplasmic expression was considered positive for NEDD9. We evaluated both extent and intensity of stain in all slides. We graded stain-intensity as: zero (negative stain); one (weak stain); two (moderate stain); and three (strong stain). We graded stain-extent as: zero, positive cells less than 1%; (one) 2–25%; (two) 26–50%; (three) 51–75%; (four) more than 75%, then we multiplied both the intensity and extent of stain in each other to reach final staining score from 0–12 final grades we used the value of 4 as final cut-off above which is considered high expression and below which is considered low expression [17].


Evaluation of immunostaining intensity of Twist1

Only nuclear expression was considered positive for Twist1. We evaluated both extent and intensity of stain in all slides by the same way as NEDD9, but we summated the stain intensity and extent scores to reach the final staining score (zero to seven). We used the value of 3 as final cut-off above which is considered high expression and below which is considered low expression [18],[19].


Statistical analysis

SPSS 22.0 for windows (SPSS Inc., USA Chicago, IL) and MedCalc-windows (MedCalc-Software 13, Ostend, bvba Belgium) in is the program used for performing the statistics. We used Mann-Whitney-U test for comparison between two non-normally distributed variables s, used Pearson’s chi-square or Fisher’s-exact tests for comparison between categorical variables percent, calculated overall-survival (OS) and progression-free-Survival (PFS) rates-stratifications according to NEDD9 and Twist1 expressions, by the method of Kaplan-Meier curve. We considered the p-value <0.05 as significant.


RESULTS

Patient characteristics

We illustrated the clinico-pathological criteria of our patients in Table 1 . We included 50 patients in our study with carcinoma of the uterine cervix in our study, which were divided into 32 (64%) cases with squamous cell carcinoma and 18 (36%) cases with adenocarcinoma with age ranged from (39–72) years (mean: 55.92±8.25 years).


Interpretation of immunohistochemical results

Regarding NEDD9 expression, we detected high expression of NEDD9 in 29 out of 50 (58%) cases of carcinoma of the uterine cervix and its expression was significantly positively correlated with increased tumor size (p = 0.003), higher grade, advanced FIGO stage, and distant metastases and presence of lymphovascular invasion (p < 0.001), but we found no significant correlations between NEDD9 expression, age of the patient or histopathological subtypes of the carcinoma (Table 2) and (Table 3), (Figure 1) and (Figure 2).

Regarding progression and survival analysis we found that cases with high NEDD9 expression were significantly positively correlated with higher incidence of carcinoma progression, poor response to therapy, higher rate of recurrence (p<0.001). Patients with high NEDD9 expression had poor progression free and three year overall survival rates (p < 0.001) (Table 4) and (Table 5), (Figure 5).

Regarding Twist1 expression, we detected high expression of Twist1 in 23 out of 50 (46%) cases of carcinoma of the uterine cervix and its expression was significantly positively correlated with increased tumor size (p = 0.019), higher grade, advanced FIGO stage, and distant metastases and presence of lymphovascular invasion (p<0.001). We found no significant correlations between Twist1 expression, age of the patient or histopathological subtypes of the carcinoma (Table 2) and (Figure 3) and (Figure 4).

Regarding progression and survival analysis we found that cases with high Twist1 expression were significantly positively correlated with higher incidence of carcinoma progression, poor response to therapy, higher rate of recurrence (p < 0.001). Patients with high Twist1 expression had poor progression free and three year overall survival rates (p < 0.001). We found a significant correlations between NEDD9 and Twist1 expressions in carcinoma of the uterine cervix (p < 0.001) (Table 4) and (Table 5) and (Figure 5).


Cursor on image to zoom/Click text to open image
Table 1: Demographic and follow-up data of our patients


Cursor on image to zoom/Click text to open image
Table 2: Correlation between clinicopathological criteria, NEDD9 and Twist1 expression in our patients


Cursor on image to zoom/Click text to open image
Figure 1: Immunohistochemical expression of NEDD9 in carcinoma of the uterine cervix (A) High expression in the cytoplasm of poorly differentiated squamous cell carcinoma (magnification: x400), (B) High expression in the cytoplasm of poorly differentiated adenocarcinoma (magnification: x400), and (C) High expression in the cytoplasm of moderately differentiated adenocarcinoma (magnification: x400).


Cursor on image to zoom/Click text to open image
Figure 2: Immunohistochemical expression of NEDD9 in carcinoma of the uterine cervix (A) Low expression in the cytoplasm of well differentiated squamous cell carcinoma stage II (magnification: x400), (B) Negative expression in the cytoplasm of well differentiated adenocarcinoma stage II (magnification: x400).


Cursor on image to zoom/Click text to open image
Table 3: Correlation between clinicopathological features and expression of both NEDD9 and Twist1 together in our patients


Cursor on image to zoom/Click text to open image
Table 4: Correlation between NEDD9 & Twist1expression and outcome of our patients


Cursor on image to zoom/Click text to open image
Table 5: correlation between expression of both NEDD9 and Twist1 together and outcome of our patients


Cursor on image to zoom/Click text to open image
Figure 3: Immunohistochemical expression of Twist1 in carcinoma of the uterine cervix (A) High expression in nucleus of poorly differentiated squamous cell carcinoma x100, (B) High expression in nucleus of poorly differentiated squamous cell carcinoma (magnification: x400), (C) High expression in nucleus of poorly differentiated adenocarcinoma (magnification: x400), (D) High expression in nucleus of moderately differentiated squamous cell carcinoma (magnification: x400), and (E) High expression in nucleus of moderately differentiated adenocarcinoma (magnification: x400).


Cursor on image to zoom/Click text to open image
Figure 4: Immunohistochemical expression of Twist1 in carcinoma of the uterine cervix (A) Low expression in nucleus of well differentiated squamous cell carcinoma (magnification: x400), and (B) Negative expression in nucleus of well differentiated adenocarcinoma (magnification: x400).


Cursor on image to zoom/Click text to open image
Figure 5: Kaplan Meier Survival plots; (A–C): Disease Free Survival; (D–F): Overall Survival; (A, D) Stratified by NEDD9 IHC staining; (B, E)-Stratified by Twist1 IHC staining; (C, F) Stratified by NEDD9/Twist1 IHC staining.



Discussion

Although there is marked development in screening, diagnostic and therapeutic modalities carcinoma of the uterine cervix remains the fourth cause of malignancy-related fatality in females globally [1]. We detected and compared the NEDD9 expression by immunohistochemical analysis in 50 cases of carcinoma of the uterine cervix, our results revealed that NEDD9 overexpression was correlated with bad clinicopathological parameters like higher incidence of lymph node and distant metastasis, higher grade and advanced FIGO stage of cervical carcinoma patients. We also demonstrated that cases with high NEDD9 expression would have higher incidence of carcinoma progression, poor response to therapy, higher rate of recurrence. Our results were similar to those reported by Sima et al., in cervical cancer [20], Li et al., in colon cancer [21], Zhang et al., in bladder cancer [22], Kim et al. [23] and Lucas et al. [24] in HNSCC and melanoma respectively, which were in line with our results that NEDD9 overexpression may have a role in carcinoma of the uterine cervix progression, invasion and spread. We also found that the carcinoma of the uterine cervix patients with a NEDD9 overexpression was associated with a shorter overall survival rate, and our results were in line with Peng Li et al. [21] in colon cancer patient, Our results were explained by that NEDD9 could regulate TGF-ß and and Wnt-signaling pathways which played many roles in invasion and spread of cancers of several organs [18][25]. The invasion and metastasis is of tumors a com–plex continuous process and NEDD9 may act through focal adhesion kinase (FAK) phosphorylation and that their interac–tion is essential for cancer cell movement, invasion and spread [26]. NEDD9 is a down-stream molecule of FAK which stimulated cancer movement and promoted cancer cells invasion and spread [23]. Sima et al. found overexpressed NEDD9 stimulates cervical cancer cells motility and invasion by a positive feedback mechanism of tyrosine phosphorylation between FAK and NEDD9 that was in agree with our results [20].

In addition to previous explanation of the role of NEDD9 in cervical cancer progression it also has a fundamental role in the EMT [7], as it increased the removal of E-cadherin from cell junctions leading to its lysosomal degradation [27].

Peng Li et al. also proved in colorectal cancer that NEDD9 has a role in phosphory–lation FAK- tyrosine and also in EMT regulation [21]. The prognostic role of NEDD9 had been assessed and its over expression has shown to be promising for lung cancer prognosis [6].

As vimentin and E-cadherin are essential EMT markers Tikhmyanova et al., proved that down regulation of NEDD9 could reduce vimentin and increased E-cadherin expressions and also NEDD9 overexpression could down-regulate E-cadherin and upregulat vimentin expressions [27] which were in line with our results that NEDD9 might have a molecular role in cancer cervix progression and metastasis.

In summary, NEDD9 is overexpressed in carcinoma of the uterine cervix cells. And its overexpression could stimulate cancer cells migration, invasion and metastases by either controlling FAK tyrosine phosphorylation or the EMT-related protein E-cadherin and vimentin expression. These results did not provide a mechanism for migration, invasion and metastases for NEDD9mediated carcinogenesis only but it could also provide a recent therapeutic target for cervical cancer management. In our study, we confirmed that Twist1 over expression is positively correlated with higher grade and advanced FIGO stage, increasing lymph nodes and distant metastases of carcinoma of the uterine cervix. Moreover, patients with Twist1 would have higher incidence of carcinoma progression, poor response to therapy and higher rate of recurrence.

These results have proved that Twist1 could be a prognostic, predictive and therapeutic target for carcinoma of the uterine cervix, which was in line with Fan et al., who demonstrated similar results in cervical malignancy [28], which explained that Twist1 had mediated cervical carcinogenesis and progression by up-regulating the TGF-ß/Smad3 signaling pathways. Results of Shibata et al., have also demonstrated that Twist1 over expression in cervical cancer was associated with increased rate of cancer progression [29].

Also Kyo et al. achieved similar results in endometrial cancer revealing that Twist1 overexpression was significantly associated with deep myometrial invasion, increased lymph node metastasis and worsened patient survival [30].

Similar to the results obtained in our study, Wushou et al. concluded in their meta-analysis of Twist expression in carcinoma that it was related to poor patients’ prognosis, worsened survival rates and that Twist1 could be a recent prognostic marker for most types of carcinomas [31]. These results were explained by that Twist1 over expression had an essential role in EMT by making an aberrant expression of E-cadherin [19], that could facilitate cancer growth, while its low expression could suppress cervical cancer occurrence, growth invasion and spread. Another explanation suggests that the transforming growth factor-ß (TGF-ß) plays a major role in EMT stimulation during carcinogenesis [32], in advanced stages of cancer cervix, TGF-ß1 extracellular levels were increased [33], which was indicated in Fan et al., study [28], found that TGF-ß stimulated the EMT by Twist1 up regulation by the TGF-ß/Smad3 responses. Moreover, the TGF-ß induced EMT could be inhibited by Twist and hence proved the EMT influencing role on Twist1 by TGF-ß/Smad3 signaling regulation. Shibata et al., achieved different results from ours regarding clinicopathological correlations and comparable results regarding patient survival who studied 101 cervical cancer patients. Twist1 expression levels were not correlated with any of the clinicopathological parameters, also its expression levels were positively related to occurrence of with lymph node metastasis, but that result was not statistically significant. Regarding survival of patient they found similar to us that Twist1 over-expression was correlated to worsened overall survival of patients [29], these differences in the significance between clinicopathological parameters and Twist1 expression in Shibata et al. results [29], may be due to different number of cases or different clone used which may decrease level of significant results. Previous research results have demonstrated Twist1 role as a vital regulator of cancer metastatic process [33][34][35][36], and proved the correlations between Twist1 expression levels and clinicopathological parameters in patients with cancer [37][38][39]. There are many explanations for such association of Twist1 over-expression and poor prognosis of various cancers. One explanation may be an increased cancer metastatic liability by EMT stimulation, also a novel role of Twist1 had been described in the development of chemoresistance that was acquired in many cancer cells as Twist1 overexpression was related to cancer cell resistance to microtube-targeting chemotherapeutics in many cancer types [40], by inhibition of a chemotherapeutics-induced apoptosis by stimulation of Akt-dependent anti-apoptotic pathway [41]. In addition, Stasinopoulos et al. has shown that Twist1 expression levels affected p53-regulated genes expression in cells of breast cancer, so controlling their response to radiotherapy [42]. In our study, we have proved that Twist1 expression levels correlated with poor response to chemoradiotherapy in our patients who needed postoperative adjuvant therapy during their management, so Twist1 expression levels are involved in patient prognosis. Moreover, Twist1 and related signaling pathways played essential roles in cancer progression and could be used as therapeutic target for cancer management [43]. Several studies had correlated Twist1 expression levels and patient survival rates in carcinomas of many organs [44][45][46] and similar results were obtained regarding Twist1 overexpression positive correlation with worse patient’s survival and poor outcome.

We found a significant correlation between NEDD9 and Twist1 expression in carcinoma of the uterine cervix and both of them was associated with poor clinicopathological criteria and poor prognosis that was similar to results of Yang et al. [47] that found that activation of the axis of Twist1_let-7i_NEDD9 in patients’ with head and neck cancer was associated with cancer invasiveness and worse outcome and that Twist1_let-7i_NEDD9 axis found in many different cancer types. So our research clarified role of Twist1 and NEDD9-induced cancer cell motility and spread which is essential for understanding the EMT-induced migratory potential of cancer stem cells that could help to detect a suitable target for blocking of Twist1 and NEDD9 induced metastasis by RAC1 activity inhibition.


Conclusion

In our study, we found highly significant correlations between NEDD9 and Twist1 expression levels in carcinoma of the uterine cervix and both markers expression was positively related to poor patient outcome suggesting that both of them could be used not only prognostic markers but also novel therapeutic targets in cervical cancer.


References
  1. Siegel R, Ma J, Zou Z, Jemal A. Cancer statistics, 2014. CA Cancer J Clin 2014 Jan–Feb;64(1):9–29.   [CrossRef]   [Pubmed]    Back to citation no. 1
  2. Kang Y, Massagué J. Epithelial-mesenchymal transitions: Twist in development and metastasis. Cell 2004 Aug 6;118(3):277–9.   [CrossRef]   [Pubmed]    Back to citation no. 2
  3. Bao W, Qiu H, Yang T, Luo X, Zhang H, Wan X. Upregulation of TrkB promotes epithelial-mesenchymal transition and anoikis resistance in endometrial carcinoma. PLoS One 2013 Jul 30;8(7):e70616.   [CrossRef]   [Pubmed]    Back to citation no. 3
  4. Kumar S, Tomooka Y, Noda M. Identification of a set of genes with developmentally down-regulated expression in the mouse brain. Biochem Biophys Res Commun 1992 Jun 30;185(3):1155–61.   [CrossRef]   [Pubmed]    Back to citation no. 4
  5. Little JL, Serzhanova V, Izumchenko E, et al. A requirement for Nedd9 in luminal progenitor cells prior to mammary tumorigenesis in MMTV-HER2/ErbB2 mice. Oncogene 2014 Jan 23;33(4):411–20.   [CrossRef]   [Pubmed]    Back to citation no. 5
  6. Kondo S, Iwata S, Yamada T, et al. Impact of the integrin signaling adaptor protein NEDD9 on prognosis and metastatic behavior of human lung cancer. Clin Cancer Res 2012 Nov 15;18(22):6326–38.   [CrossRef]   [Pubmed]    Back to citation no. 6
  7. Bui LC, Tomkiewicz C, Chevallier A, et al. Nedd9/Hef1/Cas-L mediates the effects of environmental pollutants on cell migration and plasticity. Oncogene 2009 Oct 15;28(41):3642–51.   [CrossRef]   [Pubmed]    Back to citation no. 7
  8. Law SF, O'Neill GM, Fashena SJ, Einarson MB, Golemis EA. The docking protein HEF1 is an apoptotic mediator at focal adhesion sites. Mol Cell Biol 2000 Jul;20(14):5184–95.   [CrossRef]   [Pubmed]    Back to citation no. 8
  9. Castanon I, Baylies MK. A Twist in fate: Evolutionary comparison of Twist structure and function. Gene 2002 Apr 3;287(1–2):11–22.   [CrossRef]   [Pubmed]    Back to citation no. 9
  10. Chen ZF, Behringer RR. Twist is required in head mesenchyme for cranial neural tube morphogenesis. Genes Dev 1995 Mar 15;9(6):686–99.   [CrossRef]   [Pubmed]    Back to citation no. 10
  11. Qin Q, Xu Y, He T, Qin C, Xu J. Normal and disease-related biological functions of Twist1 and underlying molecular mechanisms. Cell Res 2012 Jan;22(1):90–106.   [CrossRef]   [Pubmed]    Back to citation no. 11
  12. Zhao M, Hu HG, Huang J, et al. Expression and correlation of Twist and gelatinases in breast cancer. Exp Ther Med 2013 Jul;6(1):97–100.   [CrossRef]   [Pubmed]    Back to citation no. 12
  13. Zhu DY, Guo QS, Li YL, et al. Twist1 correlates with poor differentiation and progression in gastric adenocarcinoma via elevation of FGFR2 expression. World J Gastroenterol 2014 Dec 28;20(48):18306–15.   [CrossRef]   [Pubmed]    Back to citation no. 13
  14. Pecorelli S, Zigliani L, Odicino F. Revised FIGO staging for carcinoma of the cervix. Int J Gynaecol Obstet 2009 May;105(2):107–8.   [CrossRef]   [Pubmed]    Back to citation no. 14
  15. Hsu SM, Raine L, Fanger H. Use of avidin-biotin-peroxidase complex (ABC) in immunoperoxidase techniques: A comparison between ABC and unlabeled antibody (PAP) procedures. J Histochem Cytochem 1981 Apr;29(4):577–80.   [CrossRef]   [Pubmed]    Back to citation no. 15
  16. Natarajan M, Stewart JE, Golemis EA, et al. HEF1 is a necessary and specific downstream effector of FAK that promotes the migration of glioblastoma cells. Oncogene 2006 Mar 16;25(12):1721–32.   [CrossRef]   [Pubmed]    Back to citation no. 16
  17. Buehler D, Hardin H, Shan W, et al. Expression of epithelial-mesenchymal transition regulators SNAI2 and TWIST1 in thyroid carcinomas. Mod Pathol 2013 Jan;26(1):54–61.   [CrossRef]   [Pubmed]    Back to citation no. 17
  18. Li Y, Bavarva JH, Wang Z, et al. HEF1, a novel target of Wnt signaling, promotes colonic cell migration and cancer progression. Oncogene 2011 Jun 9;30(23):2633–43.   [CrossRef]   [Pubmed]    Back to citation no. 18
  19. Lei P, Ding D, Xie J, Wang L, Liao Q, Hu Y. Expression profile of Twist, vascular endothelial growth factor and CD34 in patients with different phases of osteosarcoma. Oncol Lett 2015 Jul;10(1):417–21.   [CrossRef]   [Pubmed]    Back to citation no. 19
  20. Sima N, Cheng X, Ye F, Ma D, Xie X, Lü W. The overexpression of scaffolding protein NEDD9 promotes migration and invasion in cervical cancer via tyrosine phosphorylated FAK and SRC. PLoS One 2013 Sep 18;8(9):e74594.   [CrossRef]   [Pubmed]    Back to citation no. 20
  21. Li P, Zhou H, Zhu X, et al. High expression of NEDD9 predicts adverse outcomes of colorectal cancer patients. Int J Clin Exp Pathol 2014 Apr 15;7(5):2565–70.   [Pubmed]    Back to citation no. 21
  22. Zhang Q, Wang HJ, Zhang DH, Ru GQ, He XJ, Ma YY. High expression of HEF1 is associated with poor prognosis in urinary bladder carcinoma. Onco Targets Ther 2014 Jul 21;7:1319–26.   [CrossRef]   [Pubmed]    Back to citation no. 22
  23. Kim M, Gans JD, Nogueira C, et al. Comparative oncogenomics identifies NEDD9 as a melanoma metastasis gene. Cell 2006 Jun 30;125(7):1269–81.   [CrossRef]   [Pubmed]    Back to citation no. 23
  24. Lucas JT Jr, Salimath BP, Slomiany MG, Rosenzweig SA. Regulation of invasive behavior by vascular endothelial growth factor is HEF1-dependent. Oncogene 2010 Aug 5;29(31):4449–59.   [CrossRef]   [Pubmed]    Back to citation no. 24
  25. Bruna A, Greenwood W, Le Quesne J, et al. TGFß induces the formation of tumour-initiating cells in claudinlow breast cancer. Nat Commun 2012;3:1055.   [CrossRef]   [Pubmed]    Back to citation no. 25
  26. van Seventer GA, Salmen HJ, Law SF, et al. Focal adhesion kinase regulates beta1 integrin-dependent T cell migration through an HEF1 effector pathway. Eur J Immunol 2001 May;31(5):1417–27.   [CrossRef]   [Pubmed]    Back to citation no. 26
  27. Tikhmyanova N, Golemis EA. NEDD9 and BCAR1 negatively regulate E-cadherin membrane localization, and promote E-cadherin degradation. PLoS One 2011;6(7):e22102.   [CrossRef]   [Pubmed]    Back to citation no. 27
  28. Fan Q, Qiu MT, Zhu Z, et al. Twist induces epithelial-mesenchymal transition in cervical carcinogenesis by regulating the TGF-ß/Smad3 signaling pathway. Oncol Rep 2015 Oct;34(4):1787–94.   [CrossRef]   [Pubmed]    Back to citation no. 28
  29. Shibata K, Kajiyama H, Ino K, et al. Twist expression in patients with cervical cancer is associated with poor disease outcome. Ann Oncol 2008 Jan;19(1):81–5.   [CrossRef]   [Pubmed]    Back to citation no. 29
  30. Kyo S, Sakaguchi J, Ohno S, et al. High Twist expression is involved in infiltrative endometrial cancer and affects patient survival. Hum Pathol 2006 Apr;37(4):431–8.   [CrossRef]   [Pubmed]    Back to citation no. 30
  31. Wushou A, Hou J, Zhao YJ, Shao ZM. Twist-1 up-regulation in carcinoma correlates to poor survival. Int J Mol Sci 2014 Nov 25;15(12):21621–30.   [CrossRef]   [Pubmed]    Back to citation no. 31
  32. Lamouille S, Derynck R. Cell size and invasion in TGF-beta-induced epithelial to mesenchymal transition is regulated by activation of the mTOR pathway. J Cell Biol 2007 Jul 30;178(3):437–51.   [CrossRef]   [Pubmed]    Back to citation no. 32
  33. Comerci JT Jr, Runowicz CD, Flanders KC, et al. Altered expression of transforming growth factor-beta 1 in cervical neoplasia as an early biomarker in carcinogenesis of the uterine cervix. Cancer 1996 Mar 15;77(6):1107–14.   [CrossRef]   [Pubmed]    Back to citation no. 33
  34. Yang J, Mani SA, Donaher JL, et al. Twist, a master regulator of morphogenesis, plays an essential role in tumor metastasis. Cell 2004 Jun 25;117(7):927–39.   [CrossRef]   [Pubmed]    Back to citation no. 34
  35. Elias MC, Tozer KR, Silber JR, et al. TWIST is expressed in human gliomas and promotes invasion. Neoplasia 2005 Sep;7(9):824–37.   [CrossRef]   [Pubmed]    Back to citation no. 35
  36. Mironchik Y, Winnard PT Jr, Vesuna F, et al. Twist overexpression induces in vivo angiogenesis and correlates with chromosomal instability in breast cancer. Cancer Res 2005 Dec 1;65(23):10801–9.   [CrossRef]   [Pubmed]    Back to citation no. 36
  37. Sasaki K, Natsugoe S, Ishigami S, et al. Significance of Twist expression and its association with E-cadherin in esophageal squamous cell carcinoma. J Exp Clin Cancer Res 2009 Dec 21;28:158.   [CrossRef]   [Pubmed]    Back to citation no. 37
  38. Soini Y, Tuhkanen H, Sironen R, et al. Transcription factors zeb1, Twist and snai1 in breast carcinoma. BMC Cancer 2011 Feb 16;11:73.   [CrossRef]   [Pubmed]    Back to citation no. 38
  39. Wushou A, Pan HY, Liu W, et al. Correlation of increased Twist with lymph node metastasis in patients with oral squamous cell carcinoma. J Oral Maxillofac Surg 2012 Jun;70(6):1473–9.   [CrossRef]   [Pubmed]    Back to citation no. 39
  40. Wang X, Ling MT, Guan XY, et al. Identification of a novel function of Twist, a bHLH protein, in the development of acquired taxol resistance in human cancer cells. Oncogene 2004 Jan 15;23(2):474–82.   [CrossRef]   [Pubmed]    Back to citation no. 40
  41. Zhang X, Wang Q, Ling MT, Wong YC, Leung SC, Wang X. Anti-apoptotic role of TWIST and its association with Akt pathway in mediating taxol resistance in nasopharyngeal carcinoma cells. Int J Cancer 2007 May 1;120(9):1891–8.   [CrossRef]   [Pubmed]    Back to citation no. 41
  42. Stasinopoulos IA, Mironchik Y, Raman A, Wildes F, Winnard P Jr, Raman V. HOXA5-twist interaction alters p53 homeostasis in breast cancer cells. J Biol Chem 2005 Jan 21;280(3):2294–9.   [CrossRef]   [Pubmed]    Back to citation no. 42
  43. Zhang D, Sun B, Zhao X, et al. Twist1 expression induced by sunitinib accelerates tumor cell vasculogenic mimicry by increasing the population of CD133+ cells in triple-negative breast cancer. Mol Cancer 2014 Sep 8;13:207.   [CrossRef]   [Pubmed]    Back to citation no. 43
  44. Hosono S, Kajiyama H, Terauchi M, et al. Expression of Twist increases the risk for recurrence and for poor survival in epithelial ovarian carcinoma patients. Br J Cancer 2007 Jan 29;96(2):314–20.   [CrossRef]   [Pubmed]    Back to citation no. 44
  45. Hung JJ, Yang MH, Hsu HS, Hsu WH, Liu JS, Wu KJ. Prognostic significance of hypoxia-inducible factor-1alpha, TWIST1 and Snail expression in resectable non-small cell lung cancer. Thorax 2009 Dec;64(12):10827–9.   [CrossRef]   [Pubmed]    Back to citation no. 45
  46. Lee KW, Kim JH, Han S, et al. Twist1 is an independent prognostic factor of esophageal squamous cell carcinoma and associated with its epithelial-mesenchymal transition. Ann Surg Oncol 2012 Jan;19(1):326–35.   [CrossRef]   [Pubmed]    Back to citation no. 46
  47. Yang WH, Lan HY, Huang CH, et al. RAC1 activation mediates Twist1-induced cancer cell migration. Nat Cell Biol 2012 Mar 11;14(4):366–74.   [CrossRef]   [Pubmed]    Back to citation no. 47

[HTML Abstract]   [PDF Full Text]

Author Contributions:
Ola A. Megahed – Substantial contributions to conception and design, Acquisition of data, Analysis and interpretation of data, Drafting the article, Revising it critically for important intellectual content, Final approval of the version to be published
Ola A. Harb – Substantial contributions to conception and design, Acquisition of data, Drafting the articles, Revising it critically for important intellectual content, Final approval of the version to be published
Rham Z. Ahmed – Substantial contributions to conception and design, Acquisition of data, Drafting the articles, Revising it critically for important intellectual content, Final approval of the version to be published
Safa A. Balata – Substantial contributions to conception and design, Acquisition of data, Drafting the articles, Revising it critically for important intellectual content; Final approval of the version to be published
Substantial contributions to conception and design, Acquisition of data, Drafting the articles, Revising it critically for important intellectual content, Final approval of the version to be published
Guarantor of submission
The corresponding author is the guarantor of submission.
Source of support
None
Conflict of interest
Authors declare no conflict of interest.
Copyright
© 2017 Ola A. Megahed et al. This article is distributed under the terms of Creative Commons Attribution License which permits unrestricted use, distribution and reproduction in any medium provided the original author(s) and original publisher are properly credited. Please see the copyright policy on the journal website for more information.