Study clarifies the role of collagen during pancreatic cancer development Contrary to long-held beliefs, Type I collagen produced by cancer-associated fibroblasts may not promote cancer development but instead plays a protective role in controlling pancreatic cancer progression, reports a new study from researchers at The University of Texas MD Anderson Cancer Center. This new understanding supports novel therapeutic approaches that bolster collagen rather than suppress it. The study finds that collagen works in the tumor microenvironment to stop the production of immune signals, called chemokines, that lead to suppression of the anti-tumor immune response. When collagen is lost, chemokine levels increase, and the cancer is allowed to grow more rapidly. The research was published today in