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Table 1. Summary of Advanced Tumor Modeling Platform




                Platforms                   Principle                   Applications                Advantages                  Limits
                Organoid-on-a-Chip          Patient-derived  stem  cells  Personalized     therapy  Reconstructs human TME  Limited  replication  of
                                            self-organized in ECM gel  development         through  complexity        through  native  mechanical  forces
                                            integrated            with  patient-specific  mutation  vascular/immune             despite perfusion control
                                            microfluidic     perfusion  modeling                    integration  in  dynamic
                                            control                                                 microenvironments
                Organ-on-a-Chip             Micro-engineered systems  High-throughput         drug  Models           multistep  Faces          fabrication
                                            replicating  human  organ- efficacy studies with real- metastasis        processes  scalability  challenges  and
                                            level   physiology     and  time PK/PD analysis         including  intravasation  or  material  biocompatibility
                                            disease dynamics                                        extravasation       under  constraints
                                                                                                    mechanical stimuli
                Tumor Spheroids             Self-assembled  3D  cell  Initial     assessment    of  Recapitulates  solid  tumor  Lacks  vascularization  and
                                            aggregates  enabling  high- chemoradiation  resistance  architecture  with  hypoxic  stromal      components,
                                            throughput drug screening  and drug toxicity profiles   cores  and  drug  diffusion  resulting  in  poor  clinical
                                            under        physiological                              gradients                   correlation
                                            gradients
















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