ジャーナル: Sci Adv / 年: 2025 タイトル: Global cellular proteo-lipidomic profiling of diverse lysosomal storage disease mutants using nMOST. 著者: Felix Kraus / Yuchen He / Sharan Swarup / Katherine A Overmyer / Yizhi Jiang / Johann Brenner / Cristina Capitanio / Anna Bieber / Annie Jen / Nicole M Nightingale / Benton J Anderson / Chan ...著者: Felix Kraus / Yuchen He / Sharan Swarup / Katherine A Overmyer / Yizhi Jiang / Johann Brenner / Cristina Capitanio / Anna Bieber / Annie Jen / Nicole M Nightingale / Benton J Anderson / Chan Lee / Joao A Paulo / Ian R Smith / Jürgen M Plitzko / Steven P Gygi / Brenda A Schulman / Florian Wilfling / Joshua J Coon / J Wade Harper / 要旨: Lysosomal storage diseases (LSDs) comprise ~50 monogenic disorders marked by the buildup of cellular material in lysosomes, yet systematic global molecular phenotyping of proteins and lipids is ...Lysosomal storage diseases (LSDs) comprise ~50 monogenic disorders marked by the buildup of cellular material in lysosomes, yet systematic global molecular phenotyping of proteins and lipids is lacking. We present a nanoflow-based multiomic single-shot technology (nMOST) workflow that quantifies HeLa cell proteomes and lipidomes from over two dozen LSD mutants. Global cross-correlation analysis between lipids and proteins identified autophagy defects, notably the accumulation of ferritinophagy substrates and receptors, especially in and mutants, where lysosomes accumulate cholesterol. Autophagic and endocytic cargo delivery failures correlated with elevated lysophosphatidylcholine species and multilamellar structures visualized by cryo-electron tomography. Loss of mitochondrial cristae, MICOS complex components, and OXPHOS components rich in iron-sulfur cluster proteins in cells was largely alleviated when iron was provided through the transferrin system. This study reveals how lysosomal dysfunction affects mitochondrial homeostasis and underscores nMOST as a valuable discovery tool for identifying molecular phenotypes across LSDs.
凍結剤: ETHANE-PROPANE / チャンバー内湿度: 70 % / チャンバー内温度: 298 K / 装置: FEI VITROBOT MARK IV
詳細
HeLa (TMEM192-HA) NPC2-/- cells were cultured on Poly-L-Lysine coated gold grids over night. The next day, cells were starved for 6h in EBSS. 10% glycerol was added shortly before plunging.
Cryo protectant
10% glycerol
切片作成
集束イオンビーム - 装置: OTHER / 集束イオンビーム - イオン: OTHER / 集束イオンビーム - 電圧: 30 / 集束イオンビーム - 電流: 3 / 集束イオンビーム - 時間: 120 / 集束イオンビーム - 温度: 80 K / 集束イオンビーム - Initial thickness: 1000 / 集束イオンビーム - 最終 厚さ: 130 集束イオンビーム - 詳細: The value given for _em_focused_ion_beam.instrument is Thermo Fisher Arctis PFIB. This is not in a list of allowed values {'DB235', 'OTHER'} so OTHER is written into the XML file.
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電子顕微鏡法
顕微鏡
TFS KRIOS
特殊光学系
エネルギーフィルター - 名称: TFS Selectris X / エネルギーフィルター - スリット幅: 10 eV