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Chakravarti AR, Groer CE, Gong H, Yudistyra V, Forrest ML, Berkland CJ. Design of a Tumor Binding GMCSF as Intratumoral Immunotherapy of Solid Tumors. Mol Pharm 2023; 20:1975-1989. [PMID: 36825806 DOI: 10.1021/acs.molpharmaceut.2c00897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Abstract
Next-generation cancer immunotherapies may utilize immunostimulants to selectively activate the host immune system against tumor cells. Checkpoint inhibitors (CPIs) like anti-PD1/PDL-1 that inhibit immunosuppression have shown unprecedented success but are only effective in the 20-30% of patients that possess an already "hot" (immunogenic) tumor. In this regard, intratumoral (IT) injection of immunostimulants is a promising approach since they can work synergistically with CPIs to overcome the resistance to immunotherapies by inducing immune stimulation in the tumor. One such immunostimulant is granulocyte macrophage-colony-stimulating factor (GMCSF) that functions by recruiting and activating antigen-presenting cells (dendritic cells) in the tumor, thereby initiating anti-tumor immune responses. However, key problems with GMCSF are lack of efficacy and the risk of systemic toxicity caused by the leakage of GMCSF from the tumor tissue. We have designed tumor-retentive versions of GMCSF that are safe yet potent immunostimulants for the local treatment of solid tumors. The engineered GMCSFs (eGMCSF) were synthesized by recombinantly fusing tumor-ECM (extracellular matrix) binding peptides to GMCSF. The eGMCSFs exhibited enhanced tumor binding and potent immunological activity in vitro and in vivo. Upon IT administration, the tumor-retentive eGMCSFs persisted in the tumor, thereby alleviating systemic toxicity, and elicited localized immune activation to effectively turn an unresponsive immunologically "cold" tumor "hot".
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Affiliation(s)
| | - Chad E Groer
- HylaPharm, LLC, Lawrence, Kansas 66047, United States.,Department of Pharmaceutical Chemistry, The University of Kansas, Lawrence, Kansas 66047, United States
| | - Huan Gong
- Department of Pharmaceutical Chemistry, The University of Kansas, Lawrence, Kansas 66047, United States
| | - Vivian Yudistyra
- Department of Chemical and Petroleum Engineering, University of Kansas, Lawrence, Kansas 66045, United States
| | - Marcus Laird Forrest
- HylaPharm, LLC, Lawrence, Kansas 66047, United States.,Department of Pharmaceutical Chemistry, The University of Kansas, Lawrence, Kansas 66047, United States
| | - Cory J Berkland
- Bioengineering Program, The University of Kansas, Lawrence, Kansas 66045, United States.,Department of Pharmaceutical Chemistry, The University of Kansas, Lawrence, Kansas 66047, United States.,Department of Chemical and Petroleum Engineering, University of Kansas, Lawrence, Kansas 66045, United States
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Griffin JD, Huayamares SG, Walston TR, Song JY, Shao M, Sedlacek AR, Diaz DL, Chakravarti AR, Berkland CJ. Brain Homogenate Decoys for Antigen-Specific Cell Amplification. ACS APPLIED BIO MATERIALS 2021; 4:387-391. [DOI: 10.1021/acsabm.0c01048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- J. Daniel Griffin
- Bioengineering Graduate Program, University of Kansas, Lawrence, Kansas 66045, United States
- Department of Pharmaceutical Chemistry, University of Kansas, Lawrence, Kansas 66047, United States
| | - Sebastian G. Huayamares
- Bioengineering Graduate Program, University of Kansas, Lawrence, Kansas 66045, United States
| | - Towne R. Walston
- School of Medicine, University of Kansas Medical Center, Kansas City, Kansas 66160, United States
| | - Jimmy Y. Song
- Department of Pharmaceutical Chemistry, University of Kansas, Lawrence, Kansas 66047, United States
| | - Michael Shao
- Department of Chemical and Petroleum Engineering, University of Kansas, Lawrence, Kansas 66045, United States
| | - Alexander R. Sedlacek
- Department of Chemical and Petroleum Engineering, University of Kansas, Lawrence, Kansas 66045, United States
| | - Deanna L. Diaz
- Department of Chemical and Petroleum Engineering, University of Kansas, Lawrence, Kansas 66045, United States
| | - Aparna R. Chakravarti
- Bioengineering Graduate Program, University of Kansas, Lawrence, Kansas 66045, United States
| | - Cory J. Berkland
- Bioengineering Graduate Program, University of Kansas, Lawrence, Kansas 66045, United States
- Department of Pharmaceutical Chemistry, University of Kansas, Lawrence, Kansas 66047, United States
- Department of Chemical and Petroleum Engineering, University of Kansas, Lawrence, Kansas 66045, United States
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