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Li W, Li X, Huang T, Teng Q, Crnovcic I, Rader C, Shen B. Engineered production of cancer targeting peptide (CTP)-containing C-1027 in Streptomyces globisporus and biological evaluation. Bioorg Med Chem 2016; 24:3887-3892. [PMID: 27094150 DOI: 10.1016/j.bmc.2016.04.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2016] [Revised: 04/06/2016] [Accepted: 04/07/2016] [Indexed: 11/25/2022]
Abstract
Conjugation of cancer targeting peptides (CTPs) with small molecular therapeutics has emerged as a promising strategy to deliver potent (but typically nonspecific) cytotoxic agents selectively to cancer cells. Here we report the engineered production of a CTP (NGR)-containing C-1027 and evaluation of its activity against selected cancer cell lines. C-1027 is an enediyne chromoprotein produced by Streptomyces globisporus, consisting of an apo-protein (CagA) and an enediyne chromophore (C-1027). NGR is a CTP that targets CD13 in tumor vasculature. S. globisporus SB1026, a recombinant strain engineered to encode CagA with the NGR sequence fused at its C-terminus, directly produces the NGR-containing C-1027 that is equally active as the native C-1027. Our results demonstrate the feasibility to produce CTP-containing enediyne chromoproteins by metabolic pathway engineering and microbial fermentation and will inspire efforts to engineer other CTP-containing drug binding proteins for targeted delivery.
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Affiliation(s)
- Wenli Li
- Division of Pharmaceutical Sciences, University of Wisconsin, Madison, WI 53705, USA
| | - Xiuling Li
- Department of Cancer Biology, The Scripps Research Institute, Jupiter, FL 33458, USA
| | - Tingting Huang
- Department of Chemistry, The Scripps Research Institute, Jupiter, FL 33458, USA
| | - Qihui Teng
- Department of Chemistry, The Scripps Research Institute, Jupiter, FL 33458, USA
| | - Ivana Crnovcic
- Department of Chemistry, The Scripps Research Institute, Jupiter, FL 33458, USA
| | - Christoph Rader
- Department of Cancer Biology, The Scripps Research Institute, Jupiter, FL 33458, USA; Department of Molecular Therapeutics, The Scripps Research Institute, Jupiter, FL 33458, USA
| | - Ben Shen
- Division of Pharmaceutical Sciences, University of Wisconsin, Madison, WI 53705, USA; Department of Chemistry, The Scripps Research Institute, Jupiter, FL 33458, USA; Department of Molecular Therapeutics, The Scripps Research Institute, Jupiter, FL 33458, USA; Natural Products Library Initiative at The Scripps Research Institute, The Scripps Research Institute, Jupiter, FL 33458, USA.
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