Title : Induced expression of p52(PAI-1) in normal rat kidney cells by the microfilament-disrupting agent cytochalasin D.

Pub. Date : 1994 Apr

PMID : 8138587






10 Functional Relationships(s)
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1 Induced expression of p52(PAI-1) in normal rat kidney cells by the microfilament-disrupting agent cytochalasin D. In established normal rat kidney (NRK) cells, synthesis of the 52 kDa type-1 inhibitor of plasminogen activator [p52(PAI-1)] is stimulated by the cell shape-modulating fungal metabolite cytochalasin D (CD). Cytochalasin D similar to Mitochondrial processing peptidase beta subunit, mitochondrial precursor (Beta-MPP; P-52) Rattus norvegicus
2 Induced expression of p52(PAI-1) in normal rat kidney cells by the microfilament-disrupting agent cytochalasin D. In established normal rat kidney (NRK) cells, synthesis of the 52 kDa type-1 inhibitor of plasminogen activator [p52(PAI-1)] is stimulated by the cell shape-modulating fungal metabolite cytochalasin D (CD). Cytochalasin D similar to Mitochondrial processing peptidase beta subunit, mitochondrial precursor (Beta-MPP; P-52) Rattus norvegicus
3 Induction paralleled the time course of morphologic change and reflected relatively specific increases in saponin-resistant p52(PAI-1) protein accumulation (approximating ten- to thirty-fold over control) and mRNA abundance (seven- to nine-fold). Saponins similar to Mitochondrial processing peptidase beta subunit, mitochondrial precursor (Beta-MPP; P-52) Rattus norvegicus
4 Sensitivity to tunicamycin indicated that N-linked post-translational modifications to this 43 kDa core species generated the full complement of 50 kDa (intermediate) and 52 kDa (mature) p52(PAI-1) glycosylated isoforms. Tunicamycin similar to Mitochondrial processing peptidase beta subunit, mitochondrial precursor (Beta-MPP; P-52) Rattus norvegicus
5 Sensitivity to tunicamycin indicated that N-linked post-translational modifications to this 43 kDa core species generated the full complement of 50 kDa (intermediate) and 52 kDa (mature) p52(PAI-1) glycosylated isoforms. Nitrogen similar to Mitochondrial processing peptidase beta subunit, mitochondrial precursor (Beta-MPP; P-52) Rattus norvegicus
6 CD-induced p52(PAI-1) expression occurred efficiently in quiescent NRK cells maintained under serum-free conditions as well as in fully serum-supplemented actively growing cultures. Cytochalasin D similar to Mitochondrial processing peptidase beta subunit, mitochondrial precursor (Beta-MPP; P-52) Rattus norvegicus
7 While 8-bromo-cAMP reduced both constitutive and transforming growth factor-beta-induced p52(PAI-1) synthesis by > 50%, no such inhibition was evident in short-term (4 h) CD-stimulated cultures. 8-Bromo Cyclic Adenosine Monophosphate similar to Mitochondrial processing peptidase beta subunit, mitochondrial precursor (Beta-MPP; P-52) Rattus norvegicus
8 Long-term (24 h) exposure of NRK/CD cells to 8-bromo-cAMP did result in an approximately 34% reduction in stimulated p52(PAI-1) expression, however, levels expressed by NRK/CD+cAMP populations remained markedly elevated relative to control values. Cytochalasin D similar to Mitochondrial processing peptidase beta subunit, mitochondrial precursor (Beta-MPP; P-52) Rattus norvegicus
9 Long-term (24 h) exposure of NRK/CD cells to 8-bromo-cAMP did result in an approximately 34% reduction in stimulated p52(PAI-1) expression, however, levels expressed by NRK/CD+cAMP populations remained markedly elevated relative to control values. 8-Bromo Cyclic Adenosine Monophosphate similar to Mitochondrial processing peptidase beta subunit, mitochondrial precursor (Beta-MPP; P-52) Rattus norvegicus
10 Long-term (24 h) exposure of NRK/CD cells to 8-bromo-cAMP did result in an approximately 34% reduction in stimulated p52(PAI-1) expression, however, levels expressed by NRK/CD+cAMP populations remained markedly elevated relative to control values. Cyclic AMP similar to Mitochondrial processing peptidase beta subunit, mitochondrial precursor (Beta-MPP; P-52) Rattus norvegicus