Specific cells in the midline separate the left and right halves of the central nervous system and play many roles in guiding the growth cone behavior. In vertebrate spinal cord, insect abdominal nerves and nematodes, midline cells produce induced cues, such as nectins and slits, respectively, as attractants and repellents. respectively. These cells can serve as gatekeepers to prevent axons from passing through the midline and to guide the growth cone in response to the switching of lead cues beyond the crossing. One such gatherer, Robo, is an axon guidance receptor that defines a new subfamily of proteins from fruit flies to mammalian conserved Ig superfamily proteins. Robo acts as a receptor for the repellent Slit and functions in a cell-autonomous manner Non-intersecting axons express high levels of Robo and cross axons to express low levels of Robo and then reach midline and high levels of crossover. Robo1 and Robo2 are two human homologs of Drosophila megalopolis. Robo1 is also homologous to the C. elegans gene sax3, while Robo2 is homologous to zebrafish genes.
Background References
1. Bianchi G et al. ROBO1 Promotes Homing, Dissemination, and Survival of Multiple Myeloma within the Bone Marrow Microenvironment. Blood Cancer Discov. 2021 Jul
2. Xie J et al. Slit2/Robo1 Mitigates DSS-induced Ulcerative Colitis by Activating Autophagy in Intestinal Stem Cell. Int J Biol Sci. 2020 Apr
Sequence Similarity
Belongs to the immunoglobulin superfamily. ROBO family.
Western blot analysis of ROBO1 on different lysates with Rabbit anti-ROBO1 antibody (EM1901-72) at 1/1,000 dilution.
Lane 1: HeLa (Human cervical adenocarcinoma cell) cell lysate Lane 2: HepG2 (Human chronic myelogenous leukemia cell) cell lysate
Lysates/proteins at 15 µg/Lane. Exposure time: 10 seconds; ECL: K1801
Blocking: 5% NFDM/TBST, 1 hour at room temperature Primary antibody: EM1901-72, 1/1,000 in 5% NFDM/TBST, overnight at 4 ℃ Secondary antibody: Goat anti-Mouse IgG-HRP (HA1006), 1/50,000 in 5% NFDM/TBST, 1 hour at room temperature
Predicted band size: 181 kDa Observed band size: 181 kDa
Immunohistochemical analysis of paraffin-embedded human breast tissue with Mouse anti-ROBO1 antibody (EM1901-72) at 1/600 dilution.
The section was pre-treated using heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0) for 20 minutes. The tissues were blocked in 1% BSA for 20 minutes at room temperature, washed with ddH2O and PBS, and then probed with the primary antibody (EM1901-72) at 1/600 dilution for 1 hour at room temperature. The detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. Tissues were counterstained with hematoxylin and mounted with DPX.
Immunohistochemical analysis of paraffin-embedded human placenta tissue with Mouse anti-ROBO1 antibody (EM1901-72) at 1/200 dilution.
The section was pre-treated using heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0) for 20 minutes. The tissues were blocked in 1% BSA for 20 minutes at room temperature, washed with ddH2O and PBS, and then probed with the primary antibody (EM1901-72) at 1/200 dilution for 1 hour at room temperature. The detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. Tissues were counterstained with hematoxylin and mounted with DPX.
Immunohistochemical analysis of paraffin-embedded mouse brain tissue using anti-ROBO1 antibody. The section was pre-treated using heat mediated antigen retrieval with Tris-EDTA buffer (pH 8.0-8.4) for 20 minutes.The tissues were blocked in 5% BSA for 30 minutes at room temperature, washed with ddH2O and PBS, and then probed with the primary antibody (EM1901-72, 1/100) for 30 minutes at room temperature. The detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. Tissues were counterstained with hematoxylin and mounted with DPX.
Immunohistochemical analysis of paraffin-embedded rat brain tissue with Mouse anti-ROBO1 antibody (EM1901-72) at 1/1,000 dilution.
The section was pre-treated using heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0) for 20 minutes. The tissues were blocked in 1% BSA for 20 minutes at room temperature, washed with ddH2O and PBS, and then probed with the primary antibody (EM1901-72) at 1/1,000 dilution for 1 hour at room temperature. The detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. Tissues were counterstained with hematoxylin and mounted with DPX.
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