Surface plasmon resonance analysis for detecting non-structural protein 1 of dengue virus in Indonesia

Widoretno, Agus Sjahrurachman, Beti Ernawati Dewi, Kenny Lischer, Diah Kartika Pratami, Darin Flamandita, Muhamad Sahlan

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


Dengue is an acute febrile disease caused by dengue virus (DENV) that is transmitted by Aedes sp., which causes serious health conditions in many countries. Non-structural protein 1 (NS1) is a co-factor for the RNA replication of this virus, which represents a new strategy for the identification of dengue. Prompt and accurate laboratory diagnosis of this infection is required to assist in patient triage and management, as well as prevent the spread of this infection. In the present study, we tested the potential of surface plasmon resonance (SPR) as a diagnostic tool for dengue infections. NS1 antigen protein was used as an analyte that targets anti-NS1 antibodies, with their interaction resulting in a change in the refractive index. In comparison to currently available gold-standard detection methods [enzyme-linked immunosorbent assay (ELISA) and reverse transcription polymerase chain reaction (RT-PCR)], SPR showed a similar sensitivity but greater efficiency and simplicity in terms of infection detection. Out of 26 samples collected from patients with dengue in Indonesia, SPR was able to correctly identify all 16 positively infected individuals at a lower concentration and a shorter period of time compared to ELISA and RT-PCR. This study revealed that SPR is a promising tool for DENV detection and potentially other diseases as well.

Original languageEnglish
Pages (from-to)1931-1937
Number of pages7
JournalSaudi Journal of Biological Sciences
Issue number8
Publication statusPublished - Aug 2020


  • Alternative method
  • Anti-non-structural protein 1
  • Dengue detection
  • Non-structural protein 1
  • Surface plasmon resonance


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