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Please use this identifier to cite or link to this item: http://repository.li.mahidol.ac.th/dspace/handle/123456789/41998
Title: Characterization and tissue distribution of neuropeptide F in the eyestalk and brain of the male giant freshwater prawn, Macrobrachium rosenbergii
Authors: Sirorat Thongrod
Narin Changklungmoa
Piyachat Chansela
Tanapan Siangcham
Thanapong Kruangkum
Saowaros Suwansa-Ard
Jirawat Saetan
Morakot Sroyraya
Yotsawan Tinikul
Chaitip Wanichanon
Prasert Sobhon
Mahidol University
Burapha University
Phramongkutklao College of Medicine
University of the Sunshine Coast
Prince of Songkla University
Keywords: Biochemistry, Genetics and Molecular Biology
Issue Date: 1-Feb-2017
Citation: Cell and Tissue Research. Vol.367, No.2 (2017), 181-195
Abstract: © 2016, Springer-Verlag Berlin Heidelberg. We previously analyzed the central nervous system (CNS) transcriptome and found three isotypes of long neuropeptide F (MrNPF-I, −II, −III) and four isoforms of short NPF (sMrNPF) in the giant freshwater prawn, Macrobrachium rosenbergii. We now validate the complete sequences of the MrNPF-I and −II precursor proteins, which show high similarity (91–95 %) to NPFs of the penaeus shrimp (PsNPF). MrNPF-I and -II precursors share 71 % amino acid identity, whereas the mature 32-amino-acid MrNPF-I and 69-amino-acid MrNPF-II are identical, except for a 37-amino-acid insert within the middle part of the latter. Both mature MrNPFs are almost identical to PsNPF-I and −II except for four amino acids at the mid-region of the peptides. Reverse transcription plus the polymerase chain reaction revealed that transripts of MrNPF-I and -II were expressed in various parts of CNS including the eyestalk, brain and thoracic and abdominal ganglia, with the highest expression occurring in the brain and thoracic ganglia and with MrNPF-I showing five- to seven-fold higher expression than MrNPF-II. These peptides were also expressed in the midgut hindgut, and hepatopancreas, with MrNPF-I expression in the former two organs being at the same level as that in the brain and thoracic ganglia and about 4-fold higher than NPF-II. The expression of NPFs was also detected in the testes and spermatic duct but appeared much weaker in the latter. Other tissues that also expressed a considerable amount of NPF-I included the hematopoeitic tissue, heart and muscle. By immunohistochemistry, we detected MrNPFs in neurons of clusters 2, 3 and 4 and neuropils ME, MT and SG of the optic ganglia, neurons in cluster 6 and neuropils AMPN, PMPN, PT, PB and CB of the medial protocerebrum, neurons in clusters 9 and 11 and neurophils ON and OGTN of the deutocerebrum and neurons in clusters 14, 15 and 16 and neuropils TN and AnN of the tritocerebrum. Because of their high degree of conservation and strong and wide-spread expression in tissues other than CNS, we believe that, in addition to being a neuromodulator in controlling feeding, MrNPFs also play critical roles in tissue homeostasis. This should be further explored.
URI: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85004131196&origin=inward
http://repository.li.mahidol.ac.th/dspace/handle/123456789/41998
ISSN: 14320878
0302766X
Appears in Collections:Scopus 2016-2017

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