Visiting Investigators

Permanent URI for this collection

https://hdl.handle.net/1912/116

Scores of distinguished biologists from around the world come to the MBL to collaborate and conduct research. They use marine and other organisms as model systems for their research.

These researchers participate in a number of established MBL groups including but not limited to:

  • MBL Summer Research Fellows
  • Dart Scholars
  • Grass Faculty Awardees
  • NeuroImaging Cluster
  • Grass Fellows
  • Whitman Center

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Browsing Visiting Investigators by Author "Brady, Scott"
  • Article
    Identifying mRNAs residing in myelinating oligodendrocyte processes as a basis for understanding internode autonomy
    (MDPI, 2023-04-04) Gould, Robert ; Brady, Scott
    In elaborating and maintaining myelin sheaths on multiple axons/segments, oligodendrocytes distribute translation of some proteins, including myelin basic protein (MBP), to sites of myelin sheath assembly, or MSAS. As mRNAs located at these sites are selectively trapped in myelin vesicles during tissue homogenization, we performed a screen to identify some of these mRNAs. To confirm locations, we used real-time quantitative polymerase chain reaction (RT-qPCR), to measure mRNA levels in myelin (M) and ‘non-myelin’ pellet (P) fractions, and found that five (LPAR1, TRP53INP2, TRAK2, TPPP, and SH3GL3) of thirteen mRNAs were highly enriched in myelin (M/P), suggesting residences in MSAS. Because expression by other cell-types will increase p-values, some MSAS mRNAs might be missed. To identify non-oligodendrocyte expression, we turned to several on-line resources. Although neurons express TRP53INP2, TRAK2 and TPPP mRNAs, these expressions did not invalidate recognitions as MSAS mRNAs. However, neuronal expression likely prevented recognition of KIF1A and MAPK8IP1 mRNAs as MSAS residents and ependymal cell expression likely prevented APOD mRNA assignment to MSAS. Complementary in situ hybridization (ISH) is recommended to confirm residences of mRNAs in MSAS. As both proteins and lipids are synthesized in MSAS, understanding myelination should not only include efforts to identify proteins synthesized in MSAS, but also the lipids.