Oto Rhino Laryngologica Indonesiana
Vol. 54 No. 2 (2024): VOLUME 54, NO. 2 JULY - DECEMBER 2024

Correlation of LMP-1 expression with KRAS and IL-8 expression in NPC WHO type III

Soehartono, Soehartono (Unknown)
Marini, Marini (Unknown)
Surjotomo, Hendradi (Unknown)
Fadli, Muhammad Luqman (Unknown)
Setijowati, Nanik (Unknown)



Article Info

Publish Date
20 Dec 2024

Abstract

Background: Nasopharyngeal carcinoma (NPC) is a squamous cell carcinoma originating from mucosal epithelium of the nasopharynx with complex disease progression. About 95% are caused by Epstein-Barr virus (EBV) infection which is characterized by the detection of viral gene product protein of Latent Membrane Protein-1 (LMP-1). Tumor growth and metastasis depend on the mechanism of angiogenesis. Interleukin-8 (IL-8) is a potent angiogenic factor and involved in the angiogenesis mechanism. Kirsten Rat Sarcoma (KRAS) is one of the proto-oncogenes that has an increased expression of more than 60% in NPC. The KRAS activation played a role in the modulation of IL-8 expression by triggering several important signaling pathways, which triggered neovascularization in the process of angiogenesis. Purpose: To determine the correlation between expression of LMP-1 with KRAS and IL-8, in mechanism of angiogenesis in NPC WHO type III. Method: Analytical observational study with a cross-sectional approach involving 30 paraffin blocks of biopsy tissue from NPC patients who had not received radiotherapy or chemotherapy. Expressions of LMP-1, KRAS, and IL-8 were examined with immunohistochemistry (IHC) staining method, and calculated using manual counting by Anatomic Pathologists. Result: Statistical analysis of LMP-1 expression with KRAS showed an insignificant positive correlation (p=0.546), with a correlation coefficient (ρ=0.115). The KRAS expression with IL-8 showed an insignificant positive correlation (p=0.851), with a correlation coefficient (ρ=0.036). The LMP-1 expression with IL-8 showed a significant positive correlation (p=0.042), with a correlation coefficient (ρ=0.321). Conclusion: The increase in the expression of LMP-1 was followed with the increase in the IL-8 expression. Keywords: NPC, LMP-1, KRAS, IL-8, angiogenesis   ABSTRAK Latar belakang: Karsinoma nasofaring (KNF) adalah karsinoma sel skuamosa yang berasal dari epitel mukosa nasofaring. Perkembangannya melibatkan hubungan yang kompleks. Sekitar 95% disebabkan oleh infeksi virus Epstein-Barr (VEB) yang ditandai dengan terdeteksinya protein produk gen virus, salah satunya yaitu Latent Membrane Protein-1 (LMP-1). Pertumbuhan dan metastasis tumor tergantung pada mekanisme angiogenesis. Interleukin-8 (IL-8) adalah faktor angiogenik yang kuat, dan terlibat dalam mekanisme angiogenesis. Kirsten Rat Sarcoma (KRAS) merupakan salah satu proto- onkogen yang mengalami peningkatan ekspresi lebih dari 60% pada KNF. Aktivasi KRAS memainkan peran dalam modulasi ekspresi IL-8 dengan memicu beberapa jalur sinyal penting, dan hal ini dapat memicu neovaskularisasi pada proses angiogenesis. Tujuan: Mengetahui korelasi antara ekspresi LMP-1 dengan ekspresi KRAS dan IL-8 dalam mekanisme angiogenesis KNF WHO tipe III. Metode: Penelitian observasional analitik dengan pendekatan potong lintang yang melibatkan 30 blok parafin jaringan biopsi penderita KNF yang belum mendapat pengobatan radioterapi maupun kemoterapi. Pemeriksaan ekspresi LMP-1, KRAS, dan IL-8 menggunakan pewarnaan imunohistokimia, dan hasilnya dihitung secara manual oleh ahli Patologi Anatomi. Hasil: Analisis statistik ekspresi LMP-1 dengan KRAS menunjukkan korelasi positif yang tidak signifikan (p =0,546), dengan koefisien korelasi ρ=0,115. Ekspresi KRAS dengan IL-8 menunjukkan korelasi positif yang tidak signifikan (p=0,851), dengan koefisien korelasi ρ=0,036. Ekspresi LMP-1 dengan IL-8 menunjukkan korelasi positif yang signifikan (p=0,042), dengan koefisien korelasi ρ=0,321. Kesimpulan: Semakin tinggi ekspresi LMP-1, maka diikuti oleh tingginya ekspresi IL-8. Kata kunci: KNF, LMP-1, KRAS, IL-8, angiogenesis

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Journal Info

Abbrev

orli

Publisher

Subject

Health Professions Medicine & Pharmacology

Description

Journal Othorhinolaryngologica Indonesiana is a peer-reviewed and open access journal that focuses on promoting otorhinolaryngology-head and neck surgery that publishes research reports, case reports, and literature reviews, to increase knowledge and updating diagnostics procedurs on ...