Comparative evaluation of chemotherapy and CAR-T cell therapy in genetically engineered self-sustaining primary

Xu Wang1, Ruijie Wang2, Xuan Lin1

  • 1Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, No. 270 Dong an Road, Xu-Hui District, Shanghai, 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, No.270 Dong an Road, Xu-Hui District, Shanghai, 200032, China; Shanghai Pancreatic Cancer Institute, No.270 Dong an Road, Xu-Hui District, Shanghai, 200032, China; Pancreatic Cancer Institute, Fudan University, No.270 Dong an Road, Xu-Hui District, Shanghai, 200032, China.

Abstract

Insights

A new transgenic method simplifies culturing patient-derived pancreatic cancer organoids. This approach enables easier study of chemotherapy and immunotherapy responses in pancreatic ductal adenocarcinoma.

Area of Science:

  • Oncology
  • Stem Cell Biology
  • Translational Medicine

Background:

  • Patient-derived organoids (PDOs) are valuable for pancreatic ductal adenocarcinoma (PDAC) research but face challenges due to complex culture needs.
  • Current methods limit broader research and therapeutic applications of PDAC organoids.
  • Developing simplified organoid culture systems is crucial for advancing PDAC studies.

Purpose of the Study:

  • To develop a simplified, self-sustaining culture system for primary pancreatic ductal adenocarcinoma organoids.
  • To create a proof-of-concept platform for evaluating therapeutic responses in PDAC organoids.
  • To reduce the complexity and cost associated with PDAC organoid culture.

Main Methods:

  • Established a biobank of 10 PDAC organoids.
  • Engineered organoids using a doxycycline-inducible Tet-On system to express RSPO1 and WNT3A cytokines.
  • Assessed organoid response to FOLFIRINOX-mimetic chemotherapy and EPHA2-targeted CAR-T cells in simplified media.

Main Results:

  • Doxycycline induction successfully enabled organoid growth in cytokine-depleted media.
  • Transgenic organoids maintained patient-specific histological and molecular features in simplified conditions.
  • Observed variable in vitro sensitivity to chemotherapy and CAR-T cells, with exploratory concordance to clinical outcomes.

Conclusions:

  • A conditional transgenic strategy simplifies PDAC organoid culture while preserving key characteristics.
  • This approach offers a feasible platform for exploring chemotherapy and immunotherapy efficacy.
  • The developed method facilitates translational research and therapeutic evaluation in pancreatic cancer.

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