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TL15 Peptide of Sulphite Reductase from Spirulina, Arthrospira platensis Exhibited Anti-inflammatory and Antioxidant Defence Role in CuSO4-Stressed Zebrafish Embryo Through Pro-inflammatory Cytokine and Glutathione Redox Mechanism

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Abstract

CuSO4 was used and created an in-vivo inflammatory model of a zebrafish embryo for drug testing in this work. In our study, molecular docking was performed to check the possible polar interaction with the peptide, TL15 of sulphite reductase derived from spirulina (Arthrospira plantensis) and the COX-2, which is predicted to have anti-inflammatory activity. In-vitro anti-inflammatory activity was performed on human erythrocytes, and the potential activity of TL15 peptide was in a concentration-dependent manner. We further investigated the technique for evaluating the anti-inflammatory effects of TL15. To produce acute inflammation, the zebrafish (Danio rerio) larvae were treated with CuSO4 at 2 μM and toxicity analysis were done at 0–96 hpf. The effect of TL15 was analysed upon treatment to CuSO4 induced larvae at dose-dependent manner (10–80 μM) and exhibited a gradual reduction in oxidative stress at 80 μM TL15. Macrophages were monitored using neutral red labelling after CuSO4 stimulation; as the major end-point, larval mortality was employed. RT-PCR was used to assess the expression level of important cytokines implicated in the inflammatory response, such as COX-2, TNF-α, IL-1β and IL-10. Within 24 h, CuSO4 increased mortality in a dose-dependent process. The increment in the inflammatory response due to CuSO4 induction in zebrafish larvae was demonstrated by analysing the COX-2, IL-1β, IL-10 and TNF-α expression. In addition, we also investigated the reactive oxygen species scavenging activity of TL15 on CuSO4 induced larvae by analysing the GST and GPX expression levels in the zebrafish embryo. Overall, TL15 of sulphite reductase was found to have a potent anti-inflammatory activity by scavenging the free radical productions.

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Data Availability

Data made available from corresponding author on reasonable request.

Abbreviations

COX-2:

Cyclooxygenase-2

CuSO4 :

Copper sulfate

IL:

Interleukin

TNF:

Tumour necrosis factor

GST:

Glutothione s-transferase

GPx:

Glutathione peroxidase

ROS:

Reactive oxygen species

EDTA:

Ethylenediaminetetraacetic acid

PCV:

Packed cell volume

RBC:

Red blood cells

PBS:

Phosphate buffer saline

H2DCFDA:

2′,7′-Dichlorodihydrofluorescein diacetate

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Acknowledgements

We acknowledge Dr. Kanchana K. Mala for providing necessary help in performing haemolytic assay and associated ethical clearance. This research is supported by Selective Excellence Initiative (SRMU/R/AR(A)/2015/79) of SRM Institute of Science and Technology (SRMIST) under Signature Programs Competition, Criteria for Academic Excellence, SRMIST, Kattankulathur Campus.

Funding

Selective Excellence Initiative (SRMU/R/AR(A)/2015/79) of SRM Institute of Science and Technology (SRMIST) under Signature Programs Competition, Criteria for Academic Excellence, SRMIST, Kattankulathur Campus.

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Conceptualization, Methodology, Formal analysis and investigation Writing-original draft preparation: PS; Conceptualization, Formal analysis, Funding acquisition, Correcting, Supervision and editing original draft: JA.

Corresponding author

Correspondence to Jesu Arockiaraj.

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The authors declare no competing interests.

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The authors declare that they have no conflicts of interest.

Research Involving Human and Animal Participants

For human blood collection, informed consent was obtained from all the participated adults in written form as per the Institute ethical approval (Ethical Clearance No. 885/IEC/2015). No animals were involved in this study.

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Sarkar, P., Arockiaraj, J. TL15 Peptide of Sulphite Reductase from Spirulina, Arthrospira platensis Exhibited Anti-inflammatory and Antioxidant Defence Role in CuSO4-Stressed Zebrafish Embryo Through Pro-inflammatory Cytokine and Glutathione Redox Mechanism. Int J Pept Res Ther 29, 1 (2023). https://doi.org/10.1007/s10989-022-10471-5

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  • DOI: https://doi.org/10.1007/s10989-022-10471-5

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