Tumor-Selective Immune-Active Mild Hyperthermia Associated with Chemotherapy in Colon Peritoneal Metastasis by Photoactivation of Fluorouracil-Gold Nanoparticle Complexes.

Peritoneal metastasis (PM) is considered as the terminal stage of metastatic colon cancer, with still poor median survival rate even with the best recent chemotherapy treatment. The current PM treatment combines cytoreductive surgery, which consists of resecting all macroscopic tumors, with hyperthermic intraperitoneal chemotherapy (HIPEC), which uses mild hyperthermia to boost the diffusion and cytotoxic effect of chemotherapeutic drugs. As HIPEC is performed a closed circulation of a hot liquid containing chemotherapy, it induces uncontrolled heating and drug distribution in the whole peritoneal cavity with important off-site toxicity and a high level of morbidity.

Immune Reprogramming Precision Photodynamic Therapy of Peritoneal Metastasis by Scalable Stem-Cell-Derived Extracellular Vesicles.

The dissemination of tumor metastasis in the peritoneal cavity, also called peritoneal metastasis (PM) or carcinomatosis, represents a late stage of gastrointestinal and gynecological cancer with very poor prognosis, even when cytoreductive surgery is effective, due to residual microscopic disease. Photodynamic therapy (PDT) in the management of peritoneal metastasis has been clinically limited by the low tumor selectivity of photosensitizers (PS) and important adverse effects. Here, we propose extracellular nanovesicles (EVs) derived from mesenchymal stem/stromal cells (MSCs) as the fourth generation of immune active PS vectors that are able to target peritoneal metastasis with superior selectivity, potentiate PDT cytotoxicity at the tumor site without affecting healthy tissues, modulate the tumor microenvironment of immunocompetent colorectal and ovarian carcinomatosis models, and promote an antitumor immune response.

Second-look surgery plus hyperthermic intraperitoneal chemotherapy versus surveillance in patients at high risk of developing colorectal peritoneal metastases (PROPHYLOCHIP-PRODIGE 15): a randomised, phase 3 study.

Background: Diagnosis and treatment of colorectal peritoneal metastases at an early stage, before the onset of signs, could improve patient survival. We aimed to compare the survival benefit of systematic second-look surgery plus hyperthermic intraperitoneal chemotherapy (HIPEC), with surveillance, in patients at high risk of developing colorectal peritoneal metastases.

Methods: We did an open-label, randomised, phase 3 study in 23 hospitals in France.

Hyperthermic intraperitoneal chemotherapy with cisplatin and mitomycin C for colorectal cancer peritoneal metastases: A systematic review of the literature.

Background: The randomized trial PRODIGE 7 failed to show the benefit of oxaliplatin hyperthermic intraperitoneal chemotherapy (HIPEC) in colorectal peritoneal metastasis treatment (CR PM). This systematic review focuses on the association of cisplatin (CDDP) with mitomycin C (MMC) in HIPEC in CR PM.

Content: Experimental studies demonstrated that hyperthermia, in addition to CDDP ± MMC treatment, gradually improved the cytotoxic effect by increasing early apoptosis, eATP interaction, intracellular CDDP concentration (by 20%) and p73 expression.

Synchronous liver metastases and peritoneal carcinomatosis from colorectal cancer: different strategies for curative treatment?

Background: Management of patients with resectable hepatic metastases (HMs) and colorectal peritoneal carcinomatosis (CRPC) is not currently standardised.

Objective: The aims of this study were to evaluate the safety of cytoreductive surgery with hyperthermic intraperitoneal chemotherapy (CRS/HIPEC) and hepatic surgery for patients with CRPC with synchronous hepatic metastases (HM), and its impact on survival rates.

Methods: A retrospective analysis was performed, including patients undergoing CRS/HIPEC for CRPC from 2007 to September 2016 in two groups, with (HM+) and without (HM-) synchronous hepatic metastases.

Photodynamic therapy and photothermal therapy for the treatment of peritoneal metastasis: a systematic review.

Background: The aim of this review was to analyze preclinical studies and clinical trials evaluating photodynamic therapy (PDT), and photothermal therapy (PTT) in peritoneal metastasis (PM) treatment.

Content: Systematic review according PRISMA guidelines. Electronic searches using PubMed and Clinical Trials.

Update on clinical trials in colorectal cancer peritoneal metastasis.

Background/purpose: Peritoneal metastases (PM) arising from colorectal cancer (CRC) can be treated using cytoreductive surgery (CRS) combined with hyperthermic intraperitoneal chemotherapy (HIPEC) in select patients.

Objective: To review clinical trials that were reported during the 10th International Congress on Peritoneal Surface Malignancies and dedicated to the treatment of CRC-PM.

Methods: Ten clinical trials were presented at the 10th Peritoneal Surface Oncology Group International (PSOGI) meeting in November 2016 in Washington DC.