Near-isotropic, aligned volume electron microscopy (eFIB-SEM) of Mouse hippocampus (jrc_mus-hippocampus-2)

dataset

posted on 2025-05-22, 18:10 authored by CellMap Project TeamCellMap Project Team, Sambashiva Banala, Sebastian E. Brauchi, Severine Chaumont-Dubel, David E. Clapham, Fei Deng, Vincent Dupuy, Melanie Freeman, Harald HessHarald Hess, Justin Houser, Tom Kirchhausen, Luke LavisLuke Lavis, Yulong Li, Song Pang, H. Amalia Pasolli, Silvia Sanchez-Martinez, Shu-Hsien SheuShu-Hsien Sheu, Srigokul Upadhyayula, Deepika Walpita, Jinxia Wan, C. Shan XuC. Shan Xu

Sample: 2–3 month old male mouse, strain: C57BL/6J from Jackson Lab.

Sample Description: This dataset was acquired from the CA1 region of the mouse hippocampus using a hybrid fixation and staining protocol optimized for primary cilia visualization. Tissue from a 2–3-month-old male C57BL/6J mouse was perfused with 3% paraformaldehyde, sectioned, and processed through high-pressure freezing in 1-hexadecene. The sample was freeze-substituted in osmium tetroxide, uranyl acetate, and either 3-amino-1,2,4-triazole or imidazole, and embedded in Durcupan resin. Sample preparation was performed by Shu-Hsien Sheu. Imaging and post-processing were completed by C. Shan Xu (Yale), Gleb Shtengel, and Harald Hess (HHMI/Janelia).

Protocol: Two datasets were acquired from the CA1 region of the mouse hippocampus using a hybrid fixation and staining protocol optimized for primary cilia visualization. 2–3-month-old male C57BL/6 mice were perfused with 3% paraformaldehyde and post-fixed in modified PFA buffer for 2 hours. Tissue was rinsed in 400 mOsM buffer and sectioned (100 µm) on a vibratome. Sections were fixed overnight in 1% PFA and 2% glutaraldehyde. 2 mm punches were high-pressure frozen in 1-hexadecene, freeze-substituted in osmium tetroxide, uranyl acetate, and either 3-amino-1,2,4-triazole or imidazole. Samples were embedded in Durcupan resin.

Contributions: Sample prepared by Shu-Hsien Sheu. Imaging and post-processing by C. Shan Xu (Yale), Gleb Shtengel, and Harald Hess(HHMI/Janelia).

Acquisition ID: jrc_mus-hippocampus-2

Voxel size (nm): 8 x 8 x 8 (x, y, z)

Data dimensions (µm): 44.98 x 44.9 x 55.06 (x, y, z)

Imaging start date: 2017-10-04

Imaging duration (days): 8

Landing energy (eV): 1100

Imaging current (nA): 1

Scanning speed (MHz): 1.250

Dataset URL: s3://janelia-cosem-datasets/jrc_mus-hippocampus-2/jrc_mus-hippocampus-2.zarr/recon-1/em/

Visualization Website: https://openorganelle.janelia.org/datasets/jrc_mus-hippocampus-2

Publication: Sheu, et al., 2022; Xu et al., 2017