Bacteria-based biohybrid agents are emerging as a promising strategy for cancer therapy due to their ability to actively target tumors, trigger localized inflammation and induce tumor regression. There has been growing interest in using bacteria that are responsive to external cues, such as magnetic fields, to facilitate the formation of robust colonies in tumor the achieve the threshold for clinical efficacy. Several studied have demonstrated the potential of innately magnetically responsive bacteria, known as magnetotactic bacteria (MTB), as steerable agents, however, their immunostimulatory properties and therapeutic effects are yet to be explored. Here, we characterize key properties of human immune cell responses and the behavior of the MTB strain Magnetospirillum magneticum AMB-1 in physiological environments. This work investigates the ability of MTB to maintain magnetic properties, viability in whole blood, cytokine production by macrophages, and the ability to increase uptake of cancer cell material by dendritic cells. This study also explores the use of MTB-liposome complexes for effective delivery of therapeutic payloads. Overall, this study establishes the potential of MTB as a versatile, combined drug delivery platform for immune-mediated cancer therapy.
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