Antibody-based proteomics to identify an apoptosis signature for early recurrence of hepatocellular carcinoma

Noriaki Morofuji, Hidenori Ojima, Nobuyoshi Hiraoka, Takuji Okusaka, Minoru Esaki, Satoshi Nara, Kazuaki Shimada, Yoshiro Kishi, Tadashi Kondo

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Background: Early recurrence after surgical resection is a hallmark of poor prognosis in hepatocellular carcinoma (HCC). To determine the proteomic background of early recurrence of HCC, we focused on apoptosis-related proteins. Methods: Surgically resected tumor tissues were obtained from 80 patients, including HCC tumor tissues, non-tumor tissues, and normal liver tissues. These samples were grouped in the discovery and validation sample sets. The expression level of 192 apoptosis-related proteins was monitored using 247 commercially available antibodies and western blotting. The intensity of protein bands was compared between the tumor and non-tumor tissues as well as between the patients who had recurrence within 2 years after surgery and those who did not. Results: In the first screening, we used pooled samples. The intensity of 53 protein bands detected by 37 unique antibodies was higher in tumor tissues compared with normal liver tissues, especially tumor tissues from patients who had recurrence within 2 years after surgery. In the second screening, we examined individual samples used to make the pooled samples. Among the selected bands and antibodies, the intensity of 18 protein bands detected by 11 antibodies was higher in tumor tissues compared with that in normal tissues, especially tumor tissues from the patients with early recurrence after surgery. For the third screening, we examined the samples from newly enrolled patients using these 11 antibodies. Eighteen protein bands detected by six antibodies were selected by using the same criteria. The corresponding antigens included ERK1, PKG, Apaf1, BclX, phosphorylated c-abl, and PIASx1/2. Conclusions: We screened 192 apoptosis-related proteins using specific antibodies and western blotting. We identified 6 apoptosis-related proteins associated with carcinogenesis and early recurrence in HCC. The biological and clinical significance of the identified proteins are worth further investigation.

Original languageEnglish
Pages (from-to)1-12
Number of pages12
JournalClinical Proteomics
Volume13
Issue number1
DOIs
Publication statusPublished - 2016 Oct 24

Fingerprint

Proteomics
Hepatocellular Carcinoma
Tissue
Apoptosis
Recurrence
Antibodies
Tumors
Proteins
Neoplasms
Surgery
Screening
Liver
Western Blotting
Carcinogenesis
Antigens

Keywords

  • Antibody-based proteomics
  • Apoptosis
  • Biomarker
  • Early recurrence
  • Hepatocellular carcinoma

ASJC Scopus subject areas

  • Molecular Medicine
  • Molecular Biology
  • Clinical Biochemistry

Cite this

Antibody-based proteomics to identify an apoptosis signature for early recurrence of hepatocellular carcinoma. / Morofuji, Noriaki; Ojima, Hidenori; Hiraoka, Nobuyoshi; Okusaka, Takuji; Esaki, Minoru; Nara, Satoshi; Shimada, Kazuaki; Kishi, Yoshiro; Kondo, Tadashi.

In: Clinical Proteomics, Vol. 13, No. 1, 24.10.2016, p. 1-12.

Research output: Contribution to journalArticle

Morofuji, N, Ojima, H, Hiraoka, N, Okusaka, T, Esaki, M, Nara, S, Shimada, K, Kishi, Y & Kondo, T 2016, 'Antibody-based proteomics to identify an apoptosis signature for early recurrence of hepatocellular carcinoma', Clinical Proteomics, vol. 13, no. 1, pp. 1-12. https://doi.org/10.1186/s12014-016-9130-0
Morofuji, Noriaki ; Ojima, Hidenori ; Hiraoka, Nobuyoshi ; Okusaka, Takuji ; Esaki, Minoru ; Nara, Satoshi ; Shimada, Kazuaki ; Kishi, Yoshiro ; Kondo, Tadashi. / Antibody-based proteomics to identify an apoptosis signature for early recurrence of hepatocellular carcinoma. In: Clinical Proteomics. 2016 ; Vol. 13, No. 1. pp. 1-12.
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T1 - Antibody-based proteomics to identify an apoptosis signature for early recurrence of hepatocellular carcinoma

AU - Morofuji, Noriaki

AU - Ojima, Hidenori

AU - Hiraoka, Nobuyoshi

AU - Okusaka, Takuji

AU - Esaki, Minoru

AU - Nara, Satoshi

AU - Shimada, Kazuaki

AU - Kishi, Yoshiro

AU - Kondo, Tadashi

PY - 2016/10/24

Y1 - 2016/10/24

N2 - Background: Early recurrence after surgical resection is a hallmark of poor prognosis in hepatocellular carcinoma (HCC). To determine the proteomic background of early recurrence of HCC, we focused on apoptosis-related proteins. Methods: Surgically resected tumor tissues were obtained from 80 patients, including HCC tumor tissues, non-tumor tissues, and normal liver tissues. These samples were grouped in the discovery and validation sample sets. The expression level of 192 apoptosis-related proteins was monitored using 247 commercially available antibodies and western blotting. The intensity of protein bands was compared between the tumor and non-tumor tissues as well as between the patients who had recurrence within 2 years after surgery and those who did not. Results: In the first screening, we used pooled samples. The intensity of 53 protein bands detected by 37 unique antibodies was higher in tumor tissues compared with normal liver tissues, especially tumor tissues from patients who had recurrence within 2 years after surgery. In the second screening, we examined individual samples used to make the pooled samples. Among the selected bands and antibodies, the intensity of 18 protein bands detected by 11 antibodies was higher in tumor tissues compared with that in normal tissues, especially tumor tissues from the patients with early recurrence after surgery. For the third screening, we examined the samples from newly enrolled patients using these 11 antibodies. Eighteen protein bands detected by six antibodies were selected by using the same criteria. The corresponding antigens included ERK1, PKG, Apaf1, BclX, phosphorylated c-abl, and PIASx1/2. Conclusions: We screened 192 apoptosis-related proteins using specific antibodies and western blotting. We identified 6 apoptosis-related proteins associated with carcinogenesis and early recurrence in HCC. The biological and clinical significance of the identified proteins are worth further investigation.

AB - Background: Early recurrence after surgical resection is a hallmark of poor prognosis in hepatocellular carcinoma (HCC). To determine the proteomic background of early recurrence of HCC, we focused on apoptosis-related proteins. Methods: Surgically resected tumor tissues were obtained from 80 patients, including HCC tumor tissues, non-tumor tissues, and normal liver tissues. These samples were grouped in the discovery and validation sample sets. The expression level of 192 apoptosis-related proteins was monitored using 247 commercially available antibodies and western blotting. The intensity of protein bands was compared between the tumor and non-tumor tissues as well as between the patients who had recurrence within 2 years after surgery and those who did not. Results: In the first screening, we used pooled samples. The intensity of 53 protein bands detected by 37 unique antibodies was higher in tumor tissues compared with normal liver tissues, especially tumor tissues from patients who had recurrence within 2 years after surgery. In the second screening, we examined individual samples used to make the pooled samples. Among the selected bands and antibodies, the intensity of 18 protein bands detected by 11 antibodies was higher in tumor tissues compared with that in normal tissues, especially tumor tissues from the patients with early recurrence after surgery. For the third screening, we examined the samples from newly enrolled patients using these 11 antibodies. Eighteen protein bands detected by six antibodies were selected by using the same criteria. The corresponding antigens included ERK1, PKG, Apaf1, BclX, phosphorylated c-abl, and PIASx1/2. Conclusions: We screened 192 apoptosis-related proteins using specific antibodies and western blotting. We identified 6 apoptosis-related proteins associated with carcinogenesis and early recurrence in HCC. The biological and clinical significance of the identified proteins are worth further investigation.

KW - Antibody-based proteomics

KW - Apoptosis

KW - Biomarker

KW - Early recurrence

KW - Hepatocellular carcinoma

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