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Article

AFAP1 and its naturally occurring antisense RNA are downregulated in gastric cancer samples

  • Authors:
    • Farbod Esfandi
    • Mohammad Taheri
    • Amir Namvar
    • Vahid Kholghi Oskooei
    • Soudeh Ghafouri‑Fard
  • View Affiliations / Copyright

    Affiliations: Department of Medical Genetics, Shahid Beheshti University of Medical Sciences, Tehran 19857‑17443, Iran, Urogenital Stem Cell Research Center, Shahid Beheshti University of Medical Sciences, Tehran 19857‑17443, Iran
  • Pages: 296-302
    |
    Published online on: April 15, 2019
       https://doi.org/10.3892/br.2019.1207
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Abstract

Actin filament‑associated protein 1 (AFAP1) encodes a protein which is an SRC proto‑oncogene, non‑receptor tyrosine kinase binding partner. This protein alters actin filament integrity in reaction to cellular signals. A long non‑coding RNA, namely AFAP1‑antisense RNA 1 (AS1), is transcribed from the antisense strand of this gene and potentially regulates its expression. In the present study, the expression levels of these two genes were evaluated in 30 gastric cancer samples and adjacent non‑cancerous tissues (ANCTs) to identify their importance in this type of human malignancy. These two genes were significantly downregulated in gastric tumor samples compared with ANCTs (expression ratio 0.26 and 0.36, P=0.001 and P=0.04 for AFAP1 and AFAP1‑AS1, respectively). Relative expressions of these two genes were associated with the location of primary tumor, in that AFAP1 and AFAP1‑AS1 were significantly downregulated in all cardia tumor types compared with their paired ANCTs (P=0.04 and P=0.001, respectively). There were indications of a significant association between the expression levels of AFAP1 and peritoneal invasion and smoking history (P=0.05). Additionally, a lower expression level of AFAP1 was detected in younger patients and in high grade tumor types compared with olders and low grade tumors respectively (P=0.01 and P=0.04, respectively) and significantly higher expression levels of AFAP1‑AS1 in patients with lymphatic/vascular invasion compared with those without lymphatic/vascular invasion (P=0.01). Furthermore, significant pairwise correlations were identified between the transcript levels of these genes in tumoral tissues and ANCTs (P values<0.05). The diagnostic power of AFAP1 and AFAP1‑AS1 in gastric cancer was calculated as area under the curve (AUC) 0.75 and 0.67, respectively. The combination of the transcript levels of these two genes significantly enhanced the diagnostic power compared with diagnostic power of each gene (AUC, 0.76; P<0.001). The present study demonstrates the dysregulation of AFAP1 and AFAP1‑AS1 in gastric cancer tissues in association with the clinicopathological data of patients and demonstrates the potential of these genes as diagnostic biomarkers.
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Copy and paste a formatted citation
Spandidos Publications style
Esfandi F, Taheri M, Namvar A, Kholghi Oskooei V and Ghafouri‑Fard S: AFAP1 and its naturally occurring antisense RNA are downregulated in gastric cancer samples. Biomed Rep 10: 296-302, 2019.
APA
Esfandi, F., Taheri, M., Namvar, A., Kholghi Oskooei, V. ., & Ghafouri‑Fard, S. (2019). AFAP1 and its naturally occurring antisense RNA are downregulated in gastric cancer samples. Biomedical Reports, 10, 296-302. https://doi.org/10.3892/br.2019.1207
MLA
Esfandi, F., Taheri, M., Namvar, A., Kholghi Oskooei, V. ., Ghafouri‑Fard, S."AFAP1 and its naturally occurring antisense RNA are downregulated in gastric cancer samples". Biomedical Reports 10.5 (2019): 296-302.
Chicago
Esfandi, F., Taheri, M., Namvar, A., Kholghi Oskooei, V. ., Ghafouri‑Fard, S."AFAP1 and its naturally occurring antisense RNA are downregulated in gastric cancer samples". Biomedical Reports 10, no. 5 (2019): 296-302. https://doi.org/10.3892/br.2019.1207
Copy and paste a formatted citation
x
Spandidos Publications style
Esfandi F, Taheri M, Namvar A, Kholghi Oskooei V and Ghafouri‑Fard S: AFAP1 and its naturally occurring antisense RNA are downregulated in gastric cancer samples. Biomed Rep 10: 296-302, 2019.
APA
Esfandi, F., Taheri, M., Namvar, A., Kholghi Oskooei, V. ., & Ghafouri‑Fard, S. (2019). AFAP1 and its naturally occurring antisense RNA are downregulated in gastric cancer samples. Biomedical Reports, 10, 296-302. https://doi.org/10.3892/br.2019.1207
MLA
Esfandi, F., Taheri, M., Namvar, A., Kholghi Oskooei, V. ., Ghafouri‑Fard, S."AFAP1 and its naturally occurring antisense RNA are downregulated in gastric cancer samples". Biomedical Reports 10.5 (2019): 296-302.
Chicago
Esfandi, F., Taheri, M., Namvar, A., Kholghi Oskooei, V. ., Ghafouri‑Fard, S."AFAP1 and its naturally occurring antisense RNA are downregulated in gastric cancer samples". Biomedical Reports 10, no. 5 (2019): 296-302. https://doi.org/10.3892/br.2019.1207
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