Part 3: Designing the Strategy to Defeat Cancer

Single cell technologies reveal the full complexity of tumors, capturing rare resistant cell states, mapping signaling networks, and dissecting interactions within the Tumor Microenvironment (TME). By resolving cellular heterogeneity and plasticity at high resolution, these approaches uncover the molecular and cellular mechanisms that drive tumor progression, immune evasion, and therapy resistance. The knowledge acquired is already informing and enabling the rational design of targeted and adaptive treatment strategies, from identifying actionable cell-state–specific vulnerabilities and predictive biomarkers, to guiding combination therapies that prevent resistance and tailoring interventions to the evolving cellular composition of individual tumors.

TLDR: Cancer therapy is shaped not only by what is targeted, but by how tumors respond, adapt, and evolve under treatment. As therapies apply selective pressure, sensitive cells are eliminated while others persist, shift state, or exploit their microenvironment to survive. These changes alter tumor composition over time and determine whether treatment succeeds or fails. Single cell analysis brings these adaptive responses into focus, revealing how therapies reshape cellular programs and interactions across the tumor ecosystem. This unit explores how understanding treatment response at cellular resolution informs more effective and durable therapeutic strategies.