title: A role for post-transcriptional control of endoplasmic reticulum dynamics and function in C. elegans germline stem cell maintenance.
abstract: Membrane-bound receptors, which are crucial for mediating several key developmental signals, are synthesized on endoplasmic reticulum (ER). The functional integrity of ER must therefore be important for the regulation of at least some developmental programs. However, the developmental control of ER function is not well understood. Here, we identify the C. elegans protein FARL-11, an ortholog of the mammalian STRIPAK complex component STRIP1/2 (FAM40A/B), as an ER protein. In the C. elegans embryo, we find that FARL-11 is essential for the cell cycle-dependent morphological changes of ER and for embryonic viability. In the germline, FARL-11 is required for normal ER morphology and for membrane localization of the GLP-1/Notch receptor involved in germline stem cell (GSC) maintenance. Furthermore, we provide evidence that PUF-8, a key translational regulator in the germline, promotes the translation of farl-11 mRNA. These findings reveal that ER form and function in the C. elegans germline are post-transcriptionally regulated and essential for the niche-GSC signaling mediated by GLP-1.
authors: Department of Biological Sciences and Bioengineering, Indian Institute of Technology, Kanpur 208016, India.
authors: Richa
authors: R
authors: Maheshwari
authors: Department of Biological Sciences and Bioengineering, Indian Institute of Technology, Kanpur 208016, India.
authors: Kumari
authors: K
authors: Pushpa
authors: Department of Biological Sciences and Bioengineering, Indian Institute of Technology, Kanpur 208016, India Department of Biotechnology, Indian Institute of Technology - Madras, Chennai 600036, India subbu@iitm.ac.in.
authors: Kuppuswamy
authors: 0000-0002-1691-489X
authors: K
authors: Subramaniam
mesh_terms: D000818:Animals; D017173:Caenorhabditis elegans / Q000166:cytology* / Q000378:metabolism*; D029742:Caenorhabditis elegans Proteins / Q000235:genetics / Q000378:metabolism*; D004721:Endoplasmic Reticulum / Q000378:metabolism*; D018507:Gene Expression Regulation, Developmental / Q000502:physiology; D005854:Germ Cells / Q000166:cytology* / Q000378:metabolism*; D015398:Signal Transduction / Q000502:physiology; D013234:Stem Cells / Q000166:cytology / Q000378:metabolism
chemical_list: D029742:Caenorhabditis elegans Proteins
keywords: Differentiation; Far complex; Germ cells; STRIPAK; Self-renewal