Abstract：
:We demonstrated the production and release of a peptide structurally identical with porcine and bovine VIP-28 in human neuroblastoma NB-OK-1 cell line. In the cells, VIP-like immunoreactive (IR-VIP) components of 8 K dalton (Kd), 11 Kd, 18 Kd and 30 Kd were also detected and the 8 Kd and 18 Kd components were apparently released into the culture medium, indicating the possibility of less extended or limited processing of the VIP precursor in the cultured cells of tumor origin. The cells were also shown to produce, simultaneously with the VIP-28, a PHI/PHM-like immunoreactive (IR-PHI/PHM) component which coeluted with synthetic PHM-27, not PHI-27, in reverse-phase high performance liquid chromatography (HPLC). In addition to the PHM-27-like component, another IR-PHI/PHM component was detected in the cell extract which eluted in HPLC immediately before synthetic PHM-27 and crossreacted with PHI-27 amino-terminal specific antiserum but not with PHI-27 central-portion specific or PHM-27 carboxyl-terminal specific antiserum. The presence in NB-OK-1 cells of this IR-PHI/PHM component related to the amino-terminal portion of PHI/PHM suggested possible alternative(s) of post-translational processing of the VIP precursor in the cells in terms of the production of PHM-27-related peptides.
journal_name
Peptidesjournal_title
Peptidesauthors
Hoshino M,Yanaihara C,Ogino K,Iguchi K,Sato H,Suzuki T,Yanaihara Ndoi
10.1016/0196-9781(84)90199-2subject
Has Abstractpub_date
1984-03-01 00:00:00pages
155-60issue
2eissn
0196-9781issn
1873-5169pii
0196-9781(84)90199-2journal_volume
5pub_type
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