Heat Shock Protein DNAJB8 is a Novel Target for Immunotherapy of Colon Cancer-initiating Cells
Overview
Authors
Affiliations
The aim of the present study was to establish cancer stem-like cell/cancer-initiating cell (CSC/CIC)-targeting immunotherapy. The CSC/CIC are thought to be essential for tumor maintenance, recurrence and distant metastasis. Therefore they are reasonable targets for cancer therapy. In the present study, we found that a heat shock protein (HSP) 40 family member, DnaJ (Hsp40) homolog, subfamily B, member 8 (DNAJB8), is preferentially expressed in CSC/CIC derived from colorectal cancer (CRC) cells rather than in non-CSC/CIC. Overexpression of DNAJB8 enhanced the expression of stem cell markers and tumorigenicity, indicating that DNAJB8 has a role in CRC CSC/CIC. A DNAJB8-specific cytotoxic T lymphocyte (CTL) response could be induced by a DNAJB8-derived antigenic peptide. A CTL clone specific for DNAJB8 peptide showed higher killing activity to CRC CSC/CIC compared with non-CSC/CIC, and CTL adoptive transfer into CRC CSC/CIC showed an antitumor effect in vivo. Taken together, the results indicate that DNAJB8 is expressed and has role in CRC CSC/CIC and that DNAJB8 is a novel target of CRC CSC/CIC-targeting immunotherapy.
Tumor Dormancy and Reactivation: The Role of Heat Shock Proteins.
Amissah H, Combs S, Shevtsov M Cells. 2024; 13(13.
PMID: 38994941 PMC: 11240553. DOI: 10.3390/cells13131087.
Chimeric antigen receptor T cells in the treatment of osteosarcoma (Review).
Yu T, Jiang W, Wang Y, Zhou Y, Jiao J, Wu M Int J Oncol. 2024; 64(4).
PMID: 38390935 PMC: 10919759. DOI: 10.3892/ijo.2024.5628.
The role of HSP40 in cancer: Recent advances.
Zhong B, Shen F, Chen J Histol Histopathol. 2024; 39(7):845-851.
PMID: 38189484 DOI: 10.14670/HH-18-693.
Fan Y, Meng Z, Zhang C, Wei D, Wei W, Xie X PeerJ. 2023; 11:e15700.
PMID: 37520264 PMC: 10386825. DOI: 10.7717/peerj.15700.
Miyamoto S, Hirohashi Y, Morita R, Miyazaki A, Ogi K, Kanaseki T Cancer Sci. 2023; 114(9):3496-3508.
PMID: 37344992 PMC: 10475777. DOI: 10.1111/cas.15873.