Assoc. Prof. Dr. Peti Thuwajit conducts advanced oncological research at Mahidol University, focusing on the tumor microenvironment, immunodiagnosis, and cancer therapeutics.

His laboratory utilizes nanotechnology, DNA methylation, and plasma lipidomics to improve early cancer detection and identify hard-to-detect malignancies. Furthermore, Dr. Thuwajit engineers single-chain variable fragments (scFvs) and peptide antagonists to disrupt proteins like periostin, which drive chemoresistance and metastasis.

For treatment, his primary work involves developing next-generation cellular immunotherapies, specifically designing fourth-generation CAR-T cells, dendritic cell treatments, and neoantigen targeting to combat aggressive solid tumors like breast cancer.

Finally, he investigates how estrogenic pathways alter tumor biology to promote metastasis in breast cancer and cholangiocarcinoma.