Abstract
The Chromosome-Centric Human Proteome Project (C-HPP) aims at the identification of missing proteins (MPs) and the functional characterization of functionally unannotated PE1 (uPE1) proteins. A major challenge in addressing this goal is that many human proteins and MPs are silent in adult cells. A promising approach to overcome such challenge is to exploit the advantage of novel tools such as pluripotent stem cells (PSCs), which are capable of differentiation into three embryonic germ layers, namely, the endoderm, mesoderm, and ectoderm. Here we present several examples of how the Human Y Chromosome Proteome Project (Y-HPP) benefited from this approach to meet C-HPP goals. Furthermore, we discuss how integrating CRISPR engineering, human-induced pluripotent stem cell (hiPSC)-derived disease modeling systems, and organoid technologies provides a unique platform for Y-HPP and C-HPP for MP identification and the functional characterization of human proteins, especially uPE1s.
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