Layla Mohammad-Hadi is a doctoral graduate in nanomedicine and cancer therapy from University College London (UCL) in the Dept. of Nanotechnology, Division of Surgery and Interventional Science. She graduated in Pharmacology and then completed a Master’s degree in Reproductive Medicine and Women’s Health. Her doctoral research was conducted in the Dept. of Nanotechnology, Division of Surgery and Interventional Science at UCL and mainly focused on Photodynamic Therapy (PDT) and the use of Photochemical internalisation (PCI) for the delivery of anti-cancer drugs to their target sites of action in various 3D models of breast and ovarian cancer. After the completion of her Ph.D., Layla continued to carry out research on colorectal and pancreatic cancer therapy using nanomedicine and PDT at UCL.Marym Mohammad-Hadi is a third-year Ph.D. student researching in nanomedicine and cancer therapy at University College London (UCL) in the Department of Surgical Biotechnology, Division of Surgery and Interventional Science. The main focus of her doctoral research is the development of a multistimulus-responsive nanoparticulate formulation for sonodynamic therapy and sonochemical internalization in pancreatic cancer. Marym obtained a degree in Pharmacology as well as a Master’s degree in Cancer Therapeutics before commencing her Ph.D.

• Preface.- Acknowledgments.- Introduction.- Photodynamic Therapy and Photochemical Internalization.- Photosensitizers and Therapeutic Agents Used in PDT and PCI.- The Use of Nanoparticles in PDT and PCI.- 3D in vitro Cancer Models.- The Applications of PDT and PCI in 3D in vitro Cancer Models.- Authors' Biographies.

Layla Mohammad-Hadi is a doctoral graduate in nanomedicine and cancer therapy from University College London (UCL) in the Dept. of Nanotechnology, Division of Surgery and Interventional Science. She graduated in Pharmacology and then completed a Master’s degree in Reproductive Medicine and Women’s Health. Her doctoral research was conducted in the Dept. of Nanotechnology, Division of Surgery and Interventional Science at UCL and mainly focused on Photodynamic Therapy (PDT) and the use of Photochemical internalisation (PCI) for the delivery of anti-cancer drugs to their target sites of action in various 3D models of breast and ovarian cancer. After the completion of her Ph.D., Layla continued to carry out research on colorectal and pancreatic cancer therapy using nanomedicine and PDT at UCL.Marym Mohammad-Hadi is a third-year Ph.D. student researching in nanomedicine and cancer therapy at University College London (UCL) in the Department of Surgical Biotechnology, Division of Surgery and Interventional Science. The main focus of her doctoral research is the development of a multistimulus-responsive nanoparticulate formulation for sonodynamic therapy and sonochemical internalization in pancreatic cancer. Marym obtained a degree in Pharmacology as well as a Master’s degree in Cancer Therapeutics before commencing her Ph.D.

• Preface.- Acknowledgments.- Introduction.- Photodynamic Therapy and Photochemical Internalization.- Photosensitizers and Therapeutic Agents Used in PDT and PCI.- The Use of Nanoparticles in PDT and PCI.- 3D in vitro Cancer Models.- The Applications of PDT and PCI in 3D in vitro Cancer Models.- Authors' Biographies.

Layla Mohammad-Hadi is a doctoral graduate in nanomedicine and cancer therapy from University College London (UCL) in the Dept. of Nanotechnology, Division of Surgery and Interventional Science. She graduated in Pharmacology and then completed a Master’s degree in Reproductive Medicine and Women’s Health. Her doctoral research was conducted in the Dept. of Nanotechnology, Division of Surgery and Interventional Science at UCL and mainly focused on Photodynamic Therapy (PDT) and the use of Photochemical internalisation (PCI) for the delivery of anti-cancer drugs to their target sites of action in various 3D models of breast and ovarian cancer. After the completion of her Ph.D., Layla continued to carry out research on colorectal and pancreatic cancer therapy using nanomedicine and PDT at UCL.Marym Mohammad-Hadi is a third-year Ph.D. student researching in nanomedicine and cancer therapy at University College London (UCL) in the Department of Surgical Biotechnology, Division of Surgery and Interventional Science. The main focus of her doctoral research is the development of a multistimulus-responsive nanoparticulate formulation for sonodynamic therapy and sonochemical internalization in pancreatic cancer. Marym obtained a degree in Pharmacology as well as a Master’s degree in Cancer Therapeutics before commencing her Ph.D.

• Preface.- Acknowledgments.- Introduction.- Photodynamic Therapy and Photochemical Internalization.- Photosensitizers and Therapeutic Agents Used in PDT and PCI.- The Use of Nanoparticles in PDT and PCI.- 3D in vitro Cancer Models.- The Applications of PDT and PCI in 3D in vitro Cancer Models.- Authors' Biographies.