4.7 Article

A Testis-Derived Hydrogel as an Efficient Feeder-Free Culture Platform to Promote Mouse Spermatogonial Stem Cell Proliferation and Differentiation

期刊

出版社

FRONTIERS MEDIA SA
DOI: 10.3389/fcell.2020.00250

关键词

testicular extracellular matrix; hydrogel; spermatogonial stem cells; proliferation; differentiation

资金

  1. National Natural Science Foundation of China [81871150, 31801235]
  2. Natural Science Foundation of Guangdong Province [2018A030313473]
  3. Science and Technology Plan Project of Guangzhou [201508020001, 2016A020214013, 201803010044, 201704YG066]
  4. Major Scientific and Technological Special Project of Administration of Ocean and Fisheries of Guangdong Province
  5. China Postdoctoral Science Foundation [2017M622914]

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Fertility preservation and assisted reproductive medicine require effective culture systems for the successful proliferation and differentiation of spermatogonial stem cells (SSCs). Many SSC culture systems require the addition of feeder cells at each subculture, which is tedious and inefficient. Here, we prepared decellularized testicular matrix (DTM) from testicular tissue, which preserved essential structural proteins of testis. The DTM was then solubilized and induced to form a porous hydrogel scaffold with randomly oriented fibrillar structures that exhibited good cytocompatibility. The viability of SSCs inoculated onto DTM hydrogel scaffolds was significantly higher than those inoculated on Matrigel or laminin, and intracellular gene expression and DNA imprinting patterns were similar to that of native SSCs. Additionally, DTM promoted SSC differentiation into round spermatids. More importantly, the DTM hydrogel supported SSC proliferation and differentiation without requiring additional somatic cells. The DTM hydrogel scaffold culture system provided an alternative and simple method for culturing SSCs that eliminates potential variability and contamination caused by feeder cells. It might be a valuable tool for reproductive medicine.

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